CN115653362A - A modular construction method for nuclear power plants - Google Patents

Abstract

The invention provides a modular construction method of a nuclear power plant, which comprises the following steps: dividing a nuclear island plant into a plurality of modules from top to bottom, respectively manufacturing frames, pouring and molding a first layer of molding modules, building a first lap joint platform flush with the first layer of molding modules on one side of the first layer of molding modules, lifting a second layer of framework modules onto the first lap joint platform, then transporting the second layer of framework modules onto the first layer of molding modules, pouring to form a second layer of molding modules, building a second lap joint platform flush with the second layer of molding modules on the first lap joint platform, lifting a third layer of framework modules onto the first lap joint platform firstly, then lifting the third layer of framework modules onto the second lap joint platform through the first lap joint platform, then transporting the third layer of framework modules onto the second layer of molding modules through the second lap joint platform, and then pouring to form a third layer of molding modules, and so on until the construction of all the modules is completed. The vertical construction method can realize the vertical construction of the large module of the nuclear power plant, thereby obviously improving the scale and the completion degree of the module of the nuclear power plant and reducing the construction period of the nuclear power plant.

Description

A kind of nuclear power plant modular construction method

technical field

The invention specifically relates to a modular construction method of a nuclear power plant.

Background technique

Modular technology is an advanced design and construction technology. Applying it to the design and construction of nuclear power plants can significantly reduce the amount of on-site construction, reduce potential safety hazards, shorten the construction period and reduce project costs. It is an effective means to improve the design and construction technology of nuclear power plants . Mainstream foreign nuclear power suppliers have applied modularization technology to varying degrees in their nuclear power reactor designs. Among them, the ABWR reactor type jointly developed by Toshiba and Hitachi in Japan has realized the large-scale application of modularization technology in construction. The Kashiwazaki- Units 6 and 7 of the Kariwa Nuclear Power Plant have achieved a construction period of 37 months (FCD-FLD); ATMEA1 jointly developed by Japan's Mitsubishi Heavy Industries and France's Areva and Korea Electric Power APR1400 also widely adopt modular technology, and the target construction period (FCD ~FLD) were 40 months and 41.5 months respectively; the AP1000 developed by Westinghouse Corporation in the early 1990s adopted modular technology on a large scale, designed more than 350 modules of different scales and different architecture levels, and the target construction period was shortened to 36 months (FCD～FLD); in addition, the pebble bed lava reactor Mk1 PB-FHR newly designed by the University of California, Berkeley has applied more advanced modular technology, and the entire nuclear island is composed of 10 large modules, further shortening the construction period ( Note: Mk1 power is 100MWe).

Although the modular design and construction technology of nuclear power plants has entered a mature stage, the modular technology represented by AP1000 has achieved great breakthroughs in module complexity and application breadth. However, in the modular engineering practice of the AP1000 demonstration project, AP1000 did not achieve the goal of 36 months (FCD-FLD). Even after optimization, the shortest total construction period is still 48 months (FCD-FLD), and the total construction period is 52 months. The advantage of modular technology in shortening the construction period is not only not obvious, but in the case of the same amount of work, the construction period of the traditional reinforced concrete structure is shorter.

One of the main reasons for this phenomenon is that the "completion" of a single module is still low, and the traditional construction sequence has not been fundamentally changed. For example, AP1000 has more than 350 modules, which are clearly divided into structural modules and equipment modules, in which the structural modules are subdivided into structural modules, formwork modules, steel structure modules, staircase modules, etc., and the equipment modules include mechanical modules and pipeline modules, etc., which fail to integrate the structural modules and equipment modules together. .

Throughout the development of nuclear power plant modular design and construction technology, from the modular hoisting construction of the containment steel-lined dome to the large-scale application of AP1000 modularization, and then to the composite module design of APR1400, nuclear power modularization technology has been moving towards large-scale and With the development in the direction of compounding, we can think that the future development trend of nuclear power modular technology will still be to further expand the breadth and depth of modules. The goal is to realize the large-scale block construction similar to ships, to obtain the minimum construction period and flexible user selection.

From the development trend of nuclear power modular technology and the difficulties encountered in the practice of AP1000 modular design and construction, we can find that the current nuclear power modular technology still has a small module size and a low degree of completion, that is, "incomplete". However, the main restrictive factor affecting the "big and complete" nuclear power module is the hoisting and positioning of large modules. The crane hoisting and positioning method used in the current modular construction is affected by the lifting capacity of large crawler cranes, station position, and clearance height. The curb quality of large modules of nuclear power plants has reached the limit of the hoisting capacity of heavy cranes. From the perspective of the development of nuclear power plant design and construction technology, the development of large-scale crane technology has a huge impact on the construction method of nuclear power plants. Figure 1 shows the influence of crane lifting capacity on the construction method of nuclear power plant containment. Although the lifting capacity of large crawler cranes used in the construction of nuclear power plants has grown from a few hundred tons to 5,000 tons (UK HPC project), this restriction on module weight, scale, shape, location and other characteristics makes it difficult for cranes to lift modules. The bit mode has become a restrictive factor for the development of nuclear power modular technology.

Contents of the invention

The technical problem to be solved by the present invention is to provide a nuclear power plant modular construction method for the above-mentioned deficiencies in the prior art, which can significantly improve the scale and completion of nuclear power plant modules, thereby improving the modular design and construction level of nuclear power plants. Significantly reduce the construction period of nuclear power plants and improve economy.

The technical solution adopted to solve the technical problems of the present invention is:

The invention provides a nuclear power plant modular construction method, comprising:

Divide the nuclear island plant into multiple modules from top to bottom, and manufacture frames separately to obtain multiple frame modules,

The first layer of frame modules are transported to the construction site and poured to form the first layer of molding modules.

Build the first overlapping platform flush with it on one side of the first-layer forming module, lift the second-layer frame module to the first overlapping platform, and then transport it to the first-layer forming module through the first overlapping platform Pouring is carried out to form the second layer of molding modules,

Build a second overlapping platform on the first overlapping platform that is flush with the second-layer forming modules, lift the third-layer frame module to the first overlapping platform, and then lift it to the second overlapping platform through the first overlapping platform. On the overlapping platform, it is transported to the second-layer forming module by the second overlapping platform and poured to form the third-layer forming module.

And so on, until the construction of all modules is completed.

Optionally, a jacking and translation device is used to lift the frame module, and the jacking and translation device includes:

a mobile mechanism and a support platform for supporting the frame module,

The moving mechanism includes a self-propelled vehicle, a climbing pole and a climbing drive,

The climbing pole runs through the supporting platform, its lower end is connected with the self-propelled vehicle, and its upper end passes through the frame module. The climbing driving part is connected with the supporting platform, and is used to drive the supporting platform to move up and down relative to the climbing pole, or to drive the climbing pole to climb up and down. The rod moves up and down relative to the supporting platform, and the self-propelled vehicle is used to drive the jacking translation device to translate,

The frame module is lifted by using the jacking translation device, which specifically includes:

S1: The jacking and translation device translates the upper frame module to the corresponding lapping platform by starting the self-propelled vehicle,

S2: The climbing drive unit drives the support platform to climb upwards on the climbing pole until the distance between the bottom surface of the support platform and the overlapping platform is greater than or equal to the height of a self-propelled vehicle.

S3: Lift the first row of unraised climbing poles in the translation direction of the jacking and translation device until the bottom surface of the self-propelled vehicle connected to the row of climbing poles is flush with the top surface of the lapping platform, and the jacking and translation device moves forward until it is in line with the top surface of the overlapping platform. The self-propelled vehicles connected by the rows of climbing poles are supported on the top surface of the overlapping platform,

S4: Step S3 is repeated until all self-propelled vehicles are supported on the top surface of the overlapping platform.

Optionally, the lifting and translation device is used to transport the frame module of the upper layer to the forming module of the next layer via the overlapping platform, which specifically includes:

S5: The jacking and translation device moves forward to the next layer of forming modules, and a jacking mechanism is set between the next layer of forming modules and the upper layer of frame modules to make it lift the upper layer of frame modules until they are separated from the support platform, and then move the The climbing pole is removed, and the self-propelled vehicle is connected to the support platform, and the jacking and translation device is moved backward until it is withdrawn from between the forming module of the next layer and the frame module of the upper layer;

S6: The jacking and translation device continues to move backward until the first row of self-propelled vehicles that have not descended in the direction of the rearward movement of the jacking and translation device is suspended in the air, and the climbing pole is connected to the suspended self-propelled vehicle after passing through the support platform, and the suspended self-propelled vehicle is released The connection between the self-propelled vehicle and the support platform, the climbing pole is lowered until the self-propelled vehicle connected to it touches the ground/supported on the next layer of overlapping platform,

S7: Repeat step S6 until all the self-propelled vehicles are on the ground/supported on the next layer of overlapping platform,

S8: The jacking mechanism retracts into the next layer of forming modules and/or the upper layer of frame modules, so that the upper layer of frame modules is supported on the next layer of forming modules.

Optionally, before the step S3, it also includes:

Install the first splicing car on the bottom surface of the front edge of the supporting platform, and make it supported on the splicing platform;

Also include between said step S3 and step S4:

Remove the first hitch cart installed on the underside of the front edge of the support platform.

Optionally, the installation of the first splicing vehicle on the bottom surface of the front edge of the supporting platform, and making it supported on the splicing platform specifically includes:

The lifting translation device moves forward until the front edge of the supporting platform extends into the upper space of the overlapping platform, and the first overlapping vehicle supported on the overlapping platform and located below the leading edge of the supporting platform is detachably connected to the supporting platform.

Optionally, in the step S4, before lifting the last row of unraised climbing poles in the forward direction of the jacking translation device, it also includes:

Install the second splicing car at the position where the bottom surface of the support platform is between the last two rows of climbing poles, and make it supported on the splicing platform;

Also include between the step S6 and the step S7:

Remove the second hitch cart installed on the underside of the support platform.

Optionally, the installation of the second splicing vehicle at the position where the bottom surface of the support platform is located between the last two rows of climbing poles, and making it supported on the splicing platform specifically includes:

The jacking and translation device moves forward, and enters the upper space of the overlapping platform to the position where the second joining vehicle is to be installed on the support platform, and the second connecting vehicle that is supported on the overlapping platform and is located below the position of the second joining vehicle to be installed on the supporting platform. The pick-up car is detachably connected with the support platform.

Optionally, in the step S7, before lowering the last row of unraised climbing poles in the forward direction of the jacking translation device, it also includes:

Install the third splicing car on the bottom surface of the front edge of the supporting platform, and make it supported on the splicing platform;

In the step S7, after all self-propelled vehicles are on the ground, it also includes:

Remove the third hitch cart installed on the underside of the support platform.

Optionally, the top surface of the forming module of the next layer and/or the bottom surface of the frame module of the upper layer have accommodating grooves capable of accommodating the retracted jacking mechanism,

In the step S5, the setting of a jacking mechanism between the molding module of the next layer and the frame module of the upper layer specifically includes:

A jacking mechanism is set in the accommodating tank;

In the step S8, the jacking mechanism is retracted into the forming module of the next layer and/or the frame module of the upper layer, specifically including:

The jacking mechanism retracts into the accommodating groove.

Optionally, the top surface of the frame module on the upper layer has a first passage communicating with the accommodating groove, and the jacking mechanism can be sent into the accommodating groove through the first passage, or from the accommodating groove out through the first channel.

Optionally, the climbing driving part includes a plurality of jacks, and the plurality of jacks are distributed around the climbing pole at circumferential intervals, the jacks are fixedly connected to the support platform, and provide support power for the support platform,

The jack repeats that one of its fixed part and telescopic part is fixedly connected with the climbing pole, and the other is disconnected from the climbing pole - the jack is telescopic - one of its fixed part and telescopic part is disconnected from the climbing pole, and the other is fixedly connected with the climbing pole -The action sequence of the jack reset, so that the supporting platform is raised and lowered relative to the climbing pole, or the climbing pole is raised and lowered relative to the supporting platform.

Optionally, a placement hole is provided in the support platform, the climbing pole penetrates the support platform through the placement hole, and the climbing driving part is located in the placement hole.

Optionally, the translation mechanism of the jacking translation device is provided with two rows, and the two rows of translation mechanisms are arranged in parallel, and are separately arranged on both sides of the longitudinal center plane of the upper frame module,

Each overlapping platform includes two walls arranged in parallel, the two walls of the first overlapping platform are built on the site of the steam turbine plant, and the wall site of the two opposite walls to be built of the steam turbine plant, and the The two columns of translation mechanisms of the jacking and translation device correspond one by one, and the two walls of the lapping platform of the upper floor are respectively arranged on the two walls of the lapping platform of the next floor, and are connected with the two walls of the lapping platform of the next floor one by one. correspond,

After the construction of the nuclear island powerhouse is completed, the overlapping platform on the site of the steam turbine powerhouse will be demolished and built to form two walls of the steam turbine powerhouse.

The nuclear island plant includes: a containment structure and an auxiliary plant, the containment structure, the auxiliary plant and the steam turbine plant are arranged in sequence along the translation direction of the jacking translation device,

The nuclear island plant is divided into multiple modules from top to bottom, and frame manufacturing is carried out separately to obtain multiple frame modules, specifically including:

Divide the auxiliary powerhouse into n auxiliary powerhouse modules from top to bottom, divide the containment structure into n+1 containment modules from top to bottom, and carry out frame manufacturing respectively to obtain n auxiliary powerhouse frame modules and n+1 Containment frame module, the mth auxiliary building frame module is set at the same height as the mth containment frame module, n≥2, m≥1;

The first layer of frame modules is transported to the construction site and poured to form the first layer of molding modules, specifically including:

The first layer of containment frame modules and the first layer of auxiliary powerhouse frame modules are successively transported to the corresponding construction site and poured to obtain the first layer of containment molding modules and the first layer of auxiliary powerhouse molding modules;

The first overlapping platform is built on one side of the first layer of forming modules flush with it, the second layer of frame modules is lifted onto the first overlapping platform, and then transported to the first layer of forming modules via the first overlapping platform After pouring, the second layer of molding modules is formed, including:

On the site of the steam turbine plant, build the first lapping platform that is flush with the molding modules of the first layer of containment, and extend to connect with the molding modules of the first layer of auxiliary power building, and lift the frame modules of the second layer of containment to the first on the lapping platform, and then transported to the first layer of containment molding modules via the first lapping platform and the forming modules of the first-floor auxiliary powerhouse, and then lift the frame modules of the second-floor auxiliary powerhouse to the first lapping platform, and then Transported to the molding modules of the first-floor auxiliary powerhouse via the first lapping platform, poured to form the second-layer containment molding modules and the second-floor auxiliary powerhouse molding modules;

The second overlapping platform that is flush with the second-layer forming module is built on the first overlapping platform, and the third-layer frame module is first lifted to the first overlapping platform, and then lifted to the first overlapping platform through the first overlapping platform. On the second lapping platform, it is transported to the second layer forming module by the second lapping platform and poured to form the third layer forming module, which specifically includes:

On the first lapping platform, build a second lapping platform that is flush with the molding modules of the second layer of containment, and extend to connect with the molding modules of the second layer of auxiliary powerhouses. First, lift the frame modules of the third layer of containment to the first lapping platform, then lifted to the second lapping platform via the first lapping platform, and then transported to the second containment molding module via the second lapping platform and the forming module of the second-floor auxiliary workshop, Then lift the frame module of the third-floor auxiliary workshop to the first overlapping platform, then lift it to the second overlapping platform through the first overlapping platform, and then transport it to the second-floor auxiliary workshop through the second overlapping platform for forming pouring on the modules to form the third-layer containment molding module and the third-layer auxiliary powerhouse molding module;

And so on until the construction of all modules is completed, including:

By analogy, until the construction of the nth floor containment molding module and the nth floor auxiliary building molding module is completed, then the n+1th layer containment frame module is placed along the first lapping platform, the second lapping platform ... The n lapping platform is lifted in turn, and then transported to the nth layer containment molding module via the nth lapping platform and the nth floor auxiliary building molding module, and poured to form the n+1th layer containment molding module.

Optionally, also include:

Complete the construction of steam turbine plant and auxiliary plant.

Optionally, the top surface of the support platform is provided with through slots, the through slots extend along the translation direction of the support platform and are used for the jacking mechanism to pass through, which include first through slots distributed sequentially along the translation direction of the support platform , the second slot, ... the Nth slot, the first slot runs through the front side of the support platform in the translation direction, the Nth slot runs through the back side of the support platform in the translation direction, N≥2,

The distance between the central axis of the jacking mechanism that raises the front end of the M+1th channel and the front side of the support platform is less than or equal to the distance between the central axis of the jacking mechanism that raises the rear end of the Mth channel and the front side of the support platform distance, M≥1,

The concrete process of described step S5 comprises:

S5.1: The jacking and translation device moves forward to the next layer of forming modules,

S5.2: A jacking mechanism is arranged between the forming module of the next layer and the bottom surface of the support platform, the jacking mechanism includes a first jacking mechanism and a second jacking mechanism, and the first jacking mechanism and the second jacking mechanism are Circumferential interval distribution of the support platform, wherein the second jacking mechanism rises from the Nth channel to lift the rear edge of the bottom surface of the large module, and the first jacking mechanism is arranged between the destination and the front edge of the bottom of the support platform , and the first set of first jacking mechanisms rises from the first through slot to lift the bottom front edge of the large-scale module, so that the large-scale module is lifted to break away from the support platform,

S5.3: Remove the climbing pole and connect the self-propelled vehicle to the support platform,

S5.5: The jacking translation device starts translation to withdraw from between the frame module of the upper layer and the forming module of the next layer, and when the first group of first jacking mechanisms is located at the rear end of the first through slot, the second A set of first jacking mechanisms passes through the second slot to lift the bottom front edge of the frame module on the upper floor, and at the same time, the first set of first jacking mechanisms descends below the bottom surface of the support platform, so that the jacking and translation device can continue Withdrawal, and so on, until the first jacking mechanism of the Nth group passes through the Nth through slot to lift the bottom front edge of the upper frame module, and the jacking translation device is completed from the destination to the upper frame. Withdrawal between modules.

Optionally, the two ends of the upper frame module perpendicular to the translation direction of the support platform protrude outward relative to the support platform,

In the step S5.2, it also includes: arranging a third jacking mechanism between the forming module of the next layer and the end of the bottom surface of the frame module of the upper layer perpendicular to the translation direction of the support platform, and the forming module of the next layer and the frame of the upper layer A fourth jacking mechanism is arranged between the other ends of the bottom surface of the module perpendicular to the translation direction of the support platform.

Optionally, the Mth through-slot and the penultimate M-th through-slot are arranged correspondingly, M≥1, and the M-th through-slot and the penultimate M-th through-slot share a set of first jacking mechanisms.

Optionally, there are multiple first through-slots, second through-slots, ... N-th through-slots, and multiple through-slots of each type of through-slot are arranged at intervals along a direction perpendicular to the translation of the support platform,

In addition, the projections of multiple channels of each type of channels onto the upper surface of the support platform are symmetrical with respect to the diameter of the upper surface of the support platform parallel to its translation direction.

Optionally, the support platform includes a support platform body and a plurality of support arms, the support arms are rotatably connected to the edge of the support platform body, and the plurality of support arms are arranged at intervals along the circumference of the support platform body,

The plurality of support arms can be rotated around their respective hinge points to the unfolded state, so that the plurality of support arms and the support platform body form a support structure for the support frame module;

The plurality of support arms can also rotate around their respective hinge points to the recovered state after the frame module is lifted by the lifting mechanism arranged on the edge of the bottom surface to disengage from the support platform. When the plurality of support arms are all in the recovered state, the The jacking and translation device can be withdrawn from between the forming module of the next layer and the frame module of the upper layer;

or,

The support platform includes two support units, the two support units are arranged in parallel along the translation direction of the support platform, and are symmetrically arranged with respect to the longitudinal center plane of the upper frame module, and the moving mechanism is correspondingly provided with two, two The moving mechanism is in one-to-one correspondence with the two supporting units,

Each support unit includes a support platform body and a plurality of support arms, the support arms are rotatably connected to the edge of the corresponding support platform body, and the plurality of support arms are arranged at intervals along the circumference of the corresponding support platform body,

The plurality of support arms can be rotated around their respective hinge points to the unfolded state, so that the plurality of support arms and the two support platform bodies constitute the support structure of the support frame module;

The plurality of support arms can also rotate around their respective hinge points to the recovery state after the frame module is lifted by the lifting mechanism arranged on the edge of the bottom surface to disengage from the support platform. When the plurality of support arms are all in the recovery state, the The jacking and translation device can be withdrawn from between the forming module of the next layer and the frame module of the upper layer;

The concrete process of described step S5 comprises:

S5.1: The jacking and translation device moves forward to the next layer of forming modules,

S5.2: A jacking mechanism is arranged between the forming module of the next layer and the bottom edge of the frame module of the upper layer. The lifting mechanism lifts the frame module of the upper layer to separate from the support platform, and multiple support arms rotate around their respective hinge points to recycling status,

S5.3: Remove the climbing pole and connect the self-propelled vehicle to the supporting platform body,

S5.4: The jacking translation device translates to withdraw from between the frame module of the upper layer and the forming module of the lower layer.

Optionally, multiple jacking mechanisms are provided, and the multiple jacking mechanisms are distributed at intervals along the circumference of the upper frame module.

The invention transforms the conventional hoisting and positioning method of large-scale nuclear power plant modules into a step-by-step lifting and translational positioning mode, thereby breaking through the limitation of the crane's lifting capacity on the size and weight of the modules, and significantly improving the scale and completion of the nuclear power plant modules. Then improve the modular design and construction level of nuclear power plants, significantly reduce the construction cycle of nuclear power plants, and improve economic efficiency.

Description of drawings

Fig. 1 is the construction flowchart of the nuclear power plant modular construction method that the embodiment 1 of the present invention provides;

Fig. 2 is a schematic diagram of a nuclear power plant modular construction method provided by Embodiment 1 of the present invention;

Fig. 3 is a schematic structural diagram of the lifting translation device provided by Embodiment 1 of the present invention;

Fig. 4 is a schematic diagram of the structure of the jacking and translation device for translational transportation of large modules;

Fig. 5 is a schematic diagram of a large module being lifted by a transfer device;

Fig. 6 is the schematic diagram after the installation of the first hitch car;

Fig. 7 is the schematic diagram that front climbing pole and self-propelled vehicle are promoted;

Fig. 8 is the schematic diagram after the installation of the second hitch car;

Figure 9 is a schematic diagram of a large module in place;

Fig. 10 is a schematic diagram of the jacking mechanism lifting the large module to break away from the support platform;

Figure 11 is a schematic diagram after removing the climbing pole;

Figure 12 is a schematic diagram of the device retreating to the suspension of the rear row of self-propelled vehicles;

Figure 13 is a schematic diagram of the installation of the rear row of climbing poles;

Figure 14 is a schematic diagram of the rear climbing pole being lowered;

Fig. 15 is the schematic diagram after the removal of the second hitch car;

Fig. 16 is the schematic diagram after the installation of the third pick-up car;

Figure 17 is a schematic diagram of the installation of the front row of climbing poles;

Figure 18 is a schematic diagram of the jacking translation device retreating to the next level of track;

Fig. 19 is a schematic diagram of lowering the upper-level large-scale module to the lower-level large-scale module by the jacking mechanism;

Figure 20 is a schematic diagram after removing the jacking mechanism;

Figure 21 is a schematic diagram of the installation of the jacking mechanism;

Fig. 22 is a schematic structural view of the support platform provided by Embodiment 1 of the present invention;

Figure 23 is a schematic diagram of the withdrawal of the support platform provided by Embodiment 1 of the present invention;

Figure 24 is a schematic structural view of the supporting platform provided by Embodiment 2 of the present invention;

Fig. 25 is a schematic diagram of the withdrawal of the support platform provided by Embodiment 2 of the present invention.

Detailed ways

The technical solution in the invention will be clearly and completely described below in conjunction with the accompanying drawings in the invention. Apparently, the described embodiments are part of the embodiments of the invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of the present invention.

In the description of the present invention, it should be noted that the orientation or positional relationship indicated by "upper" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience and simplification of description, not to indicate or imply Devices or elements must be provided in a specific orientation, constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention.

In the description of the present invention, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise clearly stipulated and limited, the terms "connection", "setting", "installation", "fixation" and so on should be understood in a broad sense, for example, it can be fixed connection or It can be detachably connected or integrally connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

The invention provides a nuclear power plant modular construction method, comprising:

Divide the nuclear island plant into multiple modules from top to bottom, and manufacture frames separately to obtain multiple frame modules,

The first layer of frame modules are transported to the construction site and poured to form the first layer of molding modules.

Build the first overlapping platform flush with it on one side of the first-layer forming module, lift the second-layer frame module to the first overlapping platform, and then transport it to the first-layer forming module through the first overlapping platform Pouring is carried out to form the second layer of molding modules,

Build a second overlapping platform on the first overlapping platform that is flush with the second-layer forming modules, lift the third-layer frame module to the first overlapping platform, and then lift it to the second overlapping platform through the first overlapping platform. On the overlapping platform, it is transported to the second-layer forming module by the second overlapping platform and poured to form the third-layer forming module.

And so on, until the construction of all modules is completed.

Example 1:

As shown in Figure 1, this embodiment provides a nuclear power plant modular construction method, including:

Divide the nuclear island plant into multiple modules from top to bottom, and manufacture frames separately to obtain multiple frame modules,

The first layer of frame modules are transported to the construction site and poured to form the first layer of molding modules.

Build the first overlapping platform flush with it on one side of the first-layer forming module, lift the second-layer frame module to the first overlapping platform, and then transport it to the first-layer forming module through the first overlapping platform Pouring is carried out to form the second layer of molding modules,

Build a second overlapping platform on the first overlapping platform that is flush with the second-layer forming modules, lift the third-layer frame module to the first overlapping platform, and then lift it to the second overlapping platform through the first overlapping platform. On the overlapping platform, it is transported to the second-layer forming module by the second overlapping platform and poured to form the third-layer forming module.

And so on, until the construction of all modules is completed.

Therefore, the present invention transforms the conventional hoisting and positioning method of large-scale nuclear power plant modules into a step-by-step jacking and translational positioning method, thereby breaking through the limitation of the module size and weight by the lifting capacity of the crane, and significantly improving the scale and weight of the nuclear power plant modules. The degree of completion will further improve the modular design and construction level of nuclear power plants, significantly reduce the construction period of nuclear power plants, and improve economic efficiency.

In this embodiment, the translation mechanism of the jacking and translation device is provided with two rows, and the two rows of translation mechanisms are arranged in parallel, and are separately arranged on both sides of the longitudinal center plane of the upper frame module 3,

as shown in picture 2,

Each lapping platform includes two walls set in parallel, the two walls of the first lapping platform are built on the site of the steam turbine plant, and the wall site of the two opposite walls to be built of the steam turbine plant, and the jacking translation device One-to-one correspondence between the two columns of translation mechanisms, the two walls of the upper overlapping platform are respectively set on the two walls of the lower overlapping platform 6, and are in one-to-one correspondence with the two walls of the lower overlapping platform 6.

In this embodiment, specifically, the nuclear island plant includes: a containment structure and an auxiliary plant, and the containment structure, the auxiliary plant, and the steam turbine plant are sequentially arranged along the translation direction of the jacking translation device, wherein the containment structure includes the containment and its surroundings facilities, the above-mentioned nuclear power plant modular construction methods specifically include:

1) At the initial stage of power plant design, the application of super-modularity is considered, and the specific design work of nuclear power plants is carried out in accordance with the principle of "segmented design, overall consideration";

2) On the basis of the design work results (3D model) of the power plant, the auxiliary power building is divided into n super-large segmental modules of the auxiliary power building from top to bottom, and the containment structure is divided into n+1 safety The super-large segmented module of the shell, in this embodiment, is based on the Hualong No. Modules, a section module of the auxiliary building is set at the same height as the section module corresponding to the containment structure;

3) Divide a single super module into multiple sub-modules, and the division of sub-modules needs to consider factors such as the versatility and transportability of sub-modules (roads, railways, ships);

4) Select a specific general-purpose sub-module according to the power scale and safety configuration requirements and process and manufacture it in the module factory. While the sub-module is being processed, carry out other construction work within the scope of the plant site, including negative excavation, floor pouring, etc.;

5) Transport the manufactured sub-modules to the sub-module assembly factory or the nuclear power construction site for super-module frame manufacturing. During the assembly of large modules, the installation and commissioning of instruments, equipment, pipelines, and cables in super-large sub-modules are carried out simultaneously work, to get n auxiliary building frame modules and n+1 containment frame modules, and at the same time to construct the super frame module, carry out the construction of the foundation of the steam turbine building, lay the first layer of track on the raft foundation of the steam turbine building, and extend To the containment structure site, provide the jacking foundation and translation channel for the superframe module;

6) The first-floor containment frame module and the first-floor auxiliary powerhouse frame module are successively transported to the corresponding construction site along the first-floor track by using the jacking and translation device, as shown in (1) of Figure 2; the corresponding modules correspond to The pre-set multiple hydraulic jacks on the concrete floor at the position are raised to the seating point on the module. At the same time, the jacks are started to accept the super module, and the lifting platform is withdrawn. in place and supported by the concrete floor, and the jack is subsequently withdrawn from the seating point through the side channel;

7) Install the first-floor containment frame module and the first-floor auxiliary powerhouse frame module. The installation work includes the welding of the reserved reinforcement for connecting the bottom slab concrete, the connection of pipelines, and the connection of cables, etc., and then concrete pouring to obtain the first-floor safety. Shell molding module and first floor auxiliary workshop molding module;

3) Remove the first layer of track on the steam turbine plant site, and then build the first lapping platform flush with the first layer of containment molding modules on the steam turbine plant site, and lay the second layer of track on the first lapping platform , and extend to the first-layer containment molding module through the first-layer auxiliary powerhouse molding module, as shown in (2) of Figure 2; then first lift the second-layer containment frame module onto the first overlapping platform, Then it is transported to the containment molding module of the first layer via the second layer of rails, and then the frame module of the auxiliary powerhouse on the second layer is lifted to the first lapping platform, and then transported to the forming module of the first layer of auxiliary powerhouse through the second layer of rails On top, complete the dismantling of the second-story rails on the nuclear island powerhouse, and the installation and pouring of the second-story frame modules to form the second-layer containment molding modules and the second-story auxiliary powerhouse molding modules;

4) Remove the second-layer track on the first overlapping platform near the nuclear island powerhouse, and build a second overlapping platform flush with the second-layer containment molding module at this position, and lay on the second overlapping platform The track of the third layer extends to the second layer containment molding module through the second layer auxiliary building molding module (which can be carried out simultaneously with the installation and pouring of the second layer frame module), as shown in (3) of Figure 2 ; First lift the third-layer containment frame module to the first overlapping platform, then lift it to the second overlapping platform through the first overlapping platform, and then transport it to the second-layer containment via the third layer of rails for forming module, then lift the frame module of the auxiliary plant on the third floor to the first overlapping platform, then lift it to the second overlapping platform through the first overlapping platform, and then transport it to the second auxiliary building via the third layer of rails On the powerhouse molding module, complete the dismantling of the third-story rail on the nuclear island powerhouse, as well as the installation and pouring of the third-layer frame module, to form the third-layer containment molding module and the third-floor auxiliary powerhouse molding module, as shown in Figure 2 (4) As shown in the figure;

5) By analogy, until the construction of the nth floor containment molding module and the nth floor auxiliary building molding module is completed, then the n+1th layer containment frame module is placed along the first lapping platform, the second lapping platform... ...the nth overlapping platform is lifted in turn, and then transported to the containment molding module on the nth layer through the nth layer of rails, and the disassembly of the n+1th layer of rails on the nuclear island plant is completed, as well as the installation of the n+1th layer of frame modules and pouring work to form the n+1th layer containment molding module, as shown in (5) of Figure 2.

6) At the same time as the installation and pouring of the frame modules on the n+1th floor, the lapping platform on the steam turbine plant site is demolished to form two walls of the steam turbine plant, which completes the rest of the walls and roof of the steam turbine plant Construction; complete the construction of the auxiliary workshop at the same time, as shown in (6) of Figure 2.

In this embodiment, a jacking and translation device is used to lift the frame module, as shown in Figure 3, the jacking and translation device includes:

Mobile mechanism and support platform 4, support platform 4 is used for supporting frame module,

The moving mechanism includes: a self-propelled vehicle 5 and a climbing mechanism 2, and the climbing mechanism 2 includes a climbing pole 12 and a climbing drive unit,

The climbing pole 12 runs through the support platform 4, its lower end is connected with the self-propelled vehicle 5, and its upper end passes through the large module. The climbing pole 12 is raised and lowered relative to the support platform 4, and the self-propelled vehicle 5 is used to drive the jacking translation device to translate.

Thus, the jacking and translation device can be used as a transportation tool for the vertical assembly and construction of the nuclear island plant, transporting and lifting the upper-level large-scale segmented module to the next-level large-scale module.

In this embodiment, the climbing drive part includes a plurality of telescopic cylinders 10, and the plurality of telescopic cylinders 10 are distributed around the climbing rod 12 at intervals in a circular direction. The telescopic cylinders 10 are fixedly connected with the support platform 4 and provide support power for the support platform 4. ,

Telescopic cylinder 10 repeats that one of its fixed part and telescopic part is connected with climbing rod 12, and the other is disconnected with climbing rod 12-telescopic cylinder 10 is telescopic-one of its fixed part and telescopic part is disconnected with climbing rod 12, and the other is disconnected with climbing rod 12. The climbing pole 12 is connected-the action sequence of the telescopic cylinder 10 reset, so that the supporting platform 4 is lifted relative to the climbing pole 12, or the climbing pole 12 is raised and lowered relative to the supporting platform 4.

In this embodiment, the telescopic part of the telescopic cylinder 10 is located below its fixed part, and the above-mentioned climbing mechanism realizes that the supporting platform 4 rises relative to the climbing pole 12 as follows: the fixed part is connected with the climbing pole 12, and the telescopic part is released from the climbing pole 12 Connection-retraction of the telescopic cylinder 10-the fixed part is disconnected from the climbing pole 12, the telescopic part is connected with the climbing pole 12-the telescopic cylinder 10 is extended, and so on, so as to realize the rise of the support platform 4 relative to the climbing pole 12.

The process in which the climbing mechanism realizes the descent of the support platform 4 relative to the climbing pole 12 is opposite to the above-mentioned ascent process, and will not be repeated here.

The above-mentioned climbing mechanism realizes that the climbing poles 12 of a certain row rise or fall relative to the supporting platform 4, which is the same as the process of realizing the rising or falling of the supporting platform 4 relative to the climbing poles 12, and will not be repeated here.

In this embodiment, both the fixed part and the telescopic part of the telescopic cylinder 10 are connected with the climbing rod 12 through the teeth 11 .

In this embodiment, the support platform 4 is provided with a placement hole 43 and a through hole 42, the through hole 42 is coaxially arranged with the placement hole 43 and runs through the upper and lower surfaces of the support platform 4, the through hole 42 is matched with the climbing pole 12, and the climbing pole 12 The through hole 42 runs through the supporting platform 4 , and the climbing drive part is located in the installation hole 43 .

The frame module is lifted by jacking and translation device, including:

S1: As shown in Figure 4, the lifting and translation device carrying the frame module 3 on the upper layer is translated along the track 7 from the relatively low level I nuclear power plant steam turbine building frame structure 6 to the relatively high overlapping platform ;

S2: As shown in Figure 5, the climbing driving part drives the support platform 4 and the upper frame module 3 carried by it to climb upwards on the climbing pole 12 until the distance between the bottom surface of the support platform 4 and the overlapping platform is greater than or equal to The height of a bicycle 5;

S3: As shown in Figure 6, the jacking translation device moves forward until the front edge of the supporting platform 4 extends into the upper space of the overlapping platform, and the first overlapping platform supported on the overlapping platform and located below the leading edge of the supporting platform 4 is moved forward. The pick-up car 8 is detachably connected with the support platform 4, wherein the purpose of setting up the first pick-up car 8 is to make it bear part of the weight of the support platform 4 and the frame module 3 on the upper floor, so as to prevent the first row of mobile mechanisms from being lifted. The device falls over, thereby providing conditions for retracting the first row of mobile mechanisms;

S4: As shown in Figure 7, under the support of the first hitch car 8, lift the first row of unraised climbing poles 12 in the forward direction of the jacking translation device to the self-propelled vehicle connected to the row of climbing poles 12 5. The bottom surface is flush with the top surface of the overlapping platform, and the jacking translation device moves forward until the self-propelled vehicle 5 connected with the row of climbing poles 12 is supported on the top surface of the overlapping platform;

S5: remove the first connecting car 8 installed on the bottom surface of the front edge of the support platform 4;

S6: As shown in Figure 8, repeat step S4 until all self-propelled vehicles 5 are supported on the top surface of the overlapping platform except the last row; The position between the rows of climbing poles 12 enters the upper space of the lapping platform, and the second lapping car 15 that will be supported on the lapping platform and is positioned at the bottom surface of the supporting platform 4 between the bottom two rows of climbing poles 12 and the support The platform 4 is detachably connected so that it supports the tail of the device and provides conditions for recovering the last stage of the mobile mechanism;

S7: As shown in Figure 9, lift the last row of unraised climbing poles 12 in the forward direction of the jacking translation device until the bottom surface of the self-propelled vehicle 5 connected to the row of climbing poles 12 is flush with the top surface of the overlapping platform, The lifting translation device moves forward until the self-propelled vehicle 5 connected to the row of climbing poles 12 is supported on the top surface of the next layer of forming module 1, that is, the lifting of the frame module is completed.

In this example,

Use the jacking and translation device to transport the frame module 3 of the upper layer to the forming module 1 of the next layer through the overlapping platform, specifically including:

S8: As shown in Figure 10, the jacking translation device continues to move forward until the frame module 3 of the upper layer is located above the forming module 1 of the next layer, and a top is set between the forming module 1 of the next layer and the frame module 3 of the upper layer. The lifting mechanism 9 makes it lift the frame module 3 on the upper floor to break away from the support platform 4, so as to provide conditions for the withdrawal of the device;

Specifically, as shown in FIG. 21 , the bottom surface of the frame module 3 on the upper floor has an accommodating groove 17 capable of accommodating the retracted jacking mechanism 9 , and the top surface of the frame module 3 on the upper layer has an accommodating groove. 17 connected first channel 14,

The jacking mechanism 9 is manually sent into the accommodating groove 17 from the first channel 14 , and the jacking mechanism 9 abuts between the molding module 1 of the next layer and the frame module 3 of the upper layer after being lifted.

S9: As shown in Figure 11, the climbing pole 12 is removed, and the self-propelled vehicle 5 is connected to the support platform 4;

S10: As shown in Figure 12, the jacking and translation device moves backward until it is withdrawn from between the next layer of forming module 1 and the upper layer of frame module 3; the jacking and translation device continues to move back to the jacking and translation device The self-propelled vehicles 5 that the first row does not descend on the backward moving direction are suspended in the air, providing conditions for installing the climbing pole 12;

S11: As shown in Figure 13, connect the climbing pole 12 to the suspended self-propelled vehicle 5 after passing through the support platform 4, and release the connection between the suspended self-propelled vehicle 5 and the support platform 4;

S12: As shown in FIG. 14 , lower the climbing pole 12 until the self-propelled vehicle 5 connected to it descends to a track with a relatively low height and provides support for the support platform, providing conditions for removing the second pick-up vehicle 15;

S13: As shown in Figure 15, remove the second hitch car 15;

S14: As shown in Figure 16, repeat steps S10-S12 until all self-propelled vehicles 5 descend to a track with a relatively low height except for the last row in the backward direction, and then install them on the bottom surface of the front edge of the supporting platform 4 The third connecting car 16, and make it supported on the connecting platform;

S15: As shown in Figure 17, the jacking and translation device moves backward until the last row of self-propelled vehicles 5 in the direction of the jacking and translation device is suspended in the air, and a climbing pole 12 is installed for it;

S16: As shown in Figure 18, lower the last row of climbing poles 12 until the self-propelled trolley 5 connected to it descends to a track with a relatively low height, then remove the third hitch trolley 16, and remove the jacking translation device;

S17: As shown in Figure 19, the jacking mechanism 9 is retracted into the accommodation groove 17 on the bottom surface of the frame module 3 of the upper layer, so that the frame module 3 of the upper layer is supported on the forming module 1 of the next layer;

S18: As shown in FIG. 20 , manually recover the jacking mechanism 9 from the accommodating tank 17 through the first passage 14, and then start the connection construction between the frame module 3 on the upper level and the large module on the lower level.

Among them, the support platform 4 is a steel structure platform, and a plurality of climbing mechanisms connected with self-propelled vehicles 5 are set according to the load requirements. As the climbing driving part, both the fixed part and the telescopic part are connected to the climbing pole 12 through the teeth 11 .

The large-scale segmented module is designed adaptively, and the second channel 13 corresponding to the climbing pole is arranged inside the module for the climbing pole 12 to pass through, and there is also a hole for the jacking mechanism to be sent into or taken out from the accommodation groove. First channel 14; In addition, each pick-up car and the self-propelled vehicle 5 of moving mechanism are identical structures, all are walking-type push-pull walkers.

Therefore, the present invention skillfully applies the jacking and translation technology to the design and construction of nuclear power plants, which can realize super-modular design and construction of nuclear power plants in the true sense, significantly shorten the construction period, and flexibly meet user needs.

Specifically, the super-modularized design and construction method of the nuclear power plant proposed by the inventor is as follows: in terms of design, the nuclear island building on the critical path of nuclear power plant construction is divided into multiple ultra-large segmented modules in the axial direction, each Each super-large segment module is constructed in the factory from standard sub-modules of similar size and manufactured in the factory. During the large-scale module assembly process, the installation and commissioning of instruments, equipment, pipelines, and cables in the super-large segmental module will be carried out simultaneously, and the super-large segmental module that has been constructed and debugged will be transported to the construction site. In terms of construction, the traditional crane hoisting construction method is transformed into a "jack-translation" construction method, which breaks through the limitation of the crane's lifting capacity on the size and weight of the module. Among them, the "jack-translation" method is the key to the success of the nuclear power plant super-modular design and construction method.

According to the super-modular method, the large-scale modules of the nuclear island of nuclear power plants are generally large-scale. For example, the diameter of the reactor building segment module exceeds 40 meters, the height exceeds 20 meters, and the weight exceeds 3,000 tons. How to segment such a large-scale module Lifting and translation to the installation position is the first problem to be solved by the super modular method.

In order to ensure the stability of the segmental lifting of the large-scale module of the nuclear power plant, the inventor proposes to divide the nuclear island plant into multiple segments and lift them step by step (the longer the jacking stroke, the worse the support stability).

Utilize the frame structure of the steam turbine workshop after reinforcement as the platform and transportation channel for the multi-stage lifting of super-large segmented modules, combined with the "jacking-translation" method of the present invention (the present invention adopts the method of alternating jacking and translation to realize the division of large modules. The lifting and translation of the section is in place), realizing the vertical assembly and construction of the nuclear island plant.

In addition, by adjusting the type and scale of the sub-modules that make up the segment module, the type of the segment module can be adjusted, combined with the adjustment of the type, quantity, capacity and axial height of the relevant equipment in the segment module, it can be flexibly realized according to user needs Nuclear power plant designs with different power scales and safety system configurations make the nuclear power plant a truly modular system.

In this embodiment, as shown in Figure 22, the top surface of the support platform 4 is provided with a through groove 46, the through groove 46 extends along the translation direction of the support platform 4 and is used for the jacking mechanism to pass through, which includes translation along the support platform 4 The first through groove, the second through groove, ... the Nth through groove distributed in sequence, the first through groove runs through the front side of the support platform 4 in the translation direction, and the Nth through groove runs through the back side of the support platform 4 in the translation direction, N ≥2,

The distance between the central axis of the jacking mechanism raised at the front end of the M+1 channel and the front side of the support platform 4 is less than or equal to the distance between the central axis of the jacking mechanism raised at the rear end of the M+1 channel and the front side of the support platform 4, M≥1,

The specific process of steps S8-S10 includes:

S8.1: The jacking and translation device continues to move forward until the frame module 3 of the upper layer is located above the forming module 1 of the next layer,

S8.2: A jacking mechanism 9 is arranged between the molding module 1 of the next layer and the bottom surface of the support platform 4. As shown in FIG. 23 , the jacking mechanism 9 includes a first jacking mechanism 91 and a second jacking mechanism 92. The jacking mechanism 91 and the second jacking mechanism 92 are distributed at intervals along the circumference of the support platform 4, wherein the second jacking mechanism 92 rises from the Nth through slot to jack up the rear edge of the bottom surface of the large module, and the first jacking mechanism The lifting mechanism 91 is located between the destination and the bottom front edge of the support platform 4, and the first group of first lifting mechanisms 91 rises from the first through groove to lift the bottom front edge of the large-scale module, so that the large-scale module can be lifted. Rise to break away from the support platform 4, providing conditions for the withdrawal of the device;

S9: remove the climbing pole 12, and connect the self-propelled vehicle 5 with the supporting platform 4,

S10.1: The jacking and translation device starts translation to withdraw from between the frame module 3 of the upper layer and the forming module 1 of the next layer, until the first set of first jacking mechanisms 91 is located at the rear end of the first through slot , the second set of first lifting mechanisms 91 passes through the second through slot to lift the bottom front edge of the frame module 3 on the upper floor, and at the same time, the first set of first lifting mechanisms 91 descends below the bottom surface of the support platform 4, Thus, the jacking and translation device can continue to be withdrawn, and so on, until the Nth group of first jacking mechanisms 91 passes through the Nth through slot to lift the bottom front edge of the frame module 3 on the upper floor, and complete the jacking and translation Withdrawal of the device from between the destination and the upper frame module 3;

S10.2: The jacking and translation device continues to move backward until the first row of self-propelled vehicles 5 that have not descended in the direction of the jacking and translation device is suspended in the air, providing conditions for installing the climbing pole 12 .

Thus, through ingenious design of the support platform 4 supporting the large frame module, and then by arranging a jacking mechanism corresponding to the through groove between the bottom front edge of the frame module of the upper layer and the forming module of the next layer, the jacking mechanism can be lifted. When the translation device travels until the first group of jacking mechanisms is located at the rear end of the previous row of slots, the latter group of jacking mechanisms will rise from the rear row of slots to smoothly lift the large modules, while the previous group of jacking mechanisms descends below the bottom surface of the support platform 4, so that the jacking translation device can be completely withdrawn from between the frame module of the upper layer and the forming module of the next layer.

In this example,

The two ends of the upper frame module 3 perpendicular to the translation direction of the support platform 4 protrude outward relative to the support platform 4,

In step S10.1, it also includes: arranging a third jacking mechanism between the forming module 1 of the next layer and the end of the frame module 3 of the upper layer perpendicular to the translation direction of the support platform 4, and the forming module 1 of the next layer and the frame module 3 of the upper layer. A fourth jacking mechanism is arranged between the other end of the bottom surface of the layer frame module 3 perpendicular to the translation direction of the support platform 4 .

In this embodiment, the Mth through-slot and the penultimate M-th through-slot are arranged correspondingly, and M≥1, so that the M-th through-slot and the penultimate M-th through-slot can share the same set of jacking mechanisms to reduce the arrangement of jacking mechanisms and save cost.

In order to ensure the support strength of the support platform, the distance between the central axis of the jacking mechanism raised at the front end of the M+1 through trough and the front side of the support platform 4 is preferably equal to the central axis of the jacking mechanism raised at the rear end of the M+1 through trough and The distance from the front side of the support platform 4.

In the above case, in order to avoid the wall of the through groove from interfering with the lifting of the jacking mechanism, the through groove 4 is designed as a waist-shaped hole, and the semicircular holes at both ends of the waist-shaped hole match with the jacking mechanism.

In order to realize the steady lifting of the large-scale module, multiple jacking mechanisms are required to lift the large-scale module along both ends of the translational direction of the support platform. Therefore, in this embodiment, the first through-slot, the second through-slot, ... There are multiple Nth through-slots, and the multiple through-slots of each type of through-slot are arranged at intervals along the direction perpendicular to the translation of the support platform 4,

Moreover, the projection of multiple channels of each type of channels onto the upper surface of the support platform 4 is symmetrical with respect to the diameter of the upper surface of the support platform 4 parallel to its translation direction.

In this embodiment, N is equal to 3. Referring to Fig. 1, the number of the first through groove and the third through groove are three and arranged correspondingly, the above-mentioned projection of the middle through groove itself is symmetrical about the above-mentioned diameter, and the projection of the through-groove on both sides is symmetrical about the above-mentioned diameter. There are four second through grooves, and their projections are two by two symmetrical to the above-mentioned diameter.

Example 2:

The difference between this embodiment and embodiment 1 is:

Support platform 4 comprises support platform body 41 and a plurality of support arms 45, and support platform body 41 can support frame module when self-propelled vehicle 5 stops, and support arm 45 is connected to the edge of support platform body 41 by hinge 44 rotation, and a plurality of support The arms 45 are arranged at intervals along the circumference of the support platform body 41,

A plurality of support arms 45 can be rotated to an unfolded state around respective hinge points, so that the plurality of support arms 45 and the support platform body 41 form a support structure capable of stably supporting the frame module when the self-propelled vehicle 5 is walking;

A plurality of support arms 45 can also rotate around their respective hinge points to the recovery state, so that after the frame module is lifted by the jacking mechanism 9 arranged on the edge of its bottom surface to break away from the support platform 4, the jacking translation device can be lifted from the next floor. Withdraw between the forming module 1 and the frame module 3 on the upper floor;

or,

As shown in Figure 24, the support platform 4 includes two support units, the two support units are arranged in parallel along the translation direction of the support platform 4, and are symmetrically arranged with respect to the longitudinal center plane of the frame module 3 on the upper layer, and the moving mechanism is provided accordingly Two, the two moving mechanisms correspond to the two supporting units one by one,

Each support unit comprises a support platform body 41 and a plurality of support arms 45, two support platform bodies 41 can support the frame module when the self-propelled vehicle 5 is parked, and the support arms 45 are rotatably connected to the edge of the corresponding support platform body 41. The support arms 45 are arranged at intervals along the circumference of the corresponding support platform body 41,

A plurality of support arms 45 can be rotated to an unfolded state around respective hinge points, so that a plurality of support arms 45 and two support platform bodies 41 form a support structure capable of stably supporting the frame module when the self-propelled vehicle 5 is walking;

A plurality of support arms 45 can also be rotated around their respective hinge points to the retracted state, so that after the frame module is lifted by the lifting mechanism 9 arranged on the edge of its bottom surface to break away from the support platform 4, the lifting translation device can be formed from the next layer Withdrawal between module 1 and upper frame module 3;

In this embodiment, the second solution is preferred, whereby the two ends of the bottom surface of the frame module 3 on the upper floor along the withdrawal direction of the support platform and the two ends perpendicular to the withdrawal direction of the support platform can be equipped with jacking mechanisms and will not affect The withdrawal of the two support units causes interference, enabling smooth transfer and jacking of large modules of greater volume and weight.

The specific process of steps S8-S10 includes:

S8.1: The jacking and translation device continues to move forward until the frame module 3 of the upper layer is located above the forming module 1 of the next layer,

S8.2: the plurality of support arms 45 rotate around their respective hinge points to the recovered state,

A jacking mechanism 9 is arranged between the next layer of molding module 1 and the edge of the bottom surface of the upper frame module 3, specifically, as shown in FIG. A first jacking mechanism 91 is set between the next layer of molding modules, and a second jacking mechanism 92 is set between the other end of the upper frame module 3 bottom surface perpendicular to the translation direction of the support platform 4 and the next layer of molding modules. A third jacking mechanism 93 is arranged between one end of the bottom surface of the frame module 3 on the upper floor along the translation direction of the support platform 4 and the forming module of the next layer, and a third jacking mechanism 93 is arranged on the bottom surface of the frame module 3 of the upper floor along the translation direction of the support platform 4. The other end and the lower A fourth jacking mechanism 94 is arranged between the molding modules of one layer, so that the frame modules 3 of the upper layer are smoothly lifted to break away from the supporting platform. Then a plurality of support arms 5 are rotated around respective hinge points to the recovered state;

S9: remove the climbing pole 12, and connect the self-propelled vehicle 5 with the supporting platform 4,

S10: The jacking and translation device translates to withdraw from between the frame module 3 of the upper layer and the forming module 1 of the lower layer.

Thus, by setting the support arm 5 that can be expanded and recovered around the support platform 4, the support arm 5 can hold the large module 7 together with the support platform 4 when it is deployed, so as to prevent it from shaking from the support platform 4 during transportation. After the large module 7 is transported to the destination, due to the space between the adjacent support arms 5, the bottom surface of the large module is perpendicular to the two ends of the withdrawal direction of the support platform 4 and the destination can be symmetrically arranged for jacking. mechanism, so as to lift the large module 7 to break away from the support platform, after the support arm 5 is recovered, the symmetrically arranged lifting mechanism will not interfere with the withdrawal of the transfer device, so that the present invention can realize the smooth transportation and maintenance of the large module 7 The dual purpose of providing conditions for the withdrawal of the transfer device.

The length and hinge position of the support arm 5 are flexibly set according to the jacking mechanism arranged on site to ensure that the jacking mechanism does not interfere with the recovery of the support arm 5 and the transfer device after the lifting mechanism lifts the large module to the supporting platform. withdraw.

In this embodiment, as shown in FIG. 25 , after the support arm 5 is retracted, its orthographic projection on a plane passing the upper surface of the support platform 1 is located on the upper surface of the support platform 1 .

It can be understood that, the above embodiments are only exemplary embodiments adopted for illustrating the principle of the present invention, but the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also regarded as the protection scope of the present invention.

Claims (21)

1. A modular construction method for a nuclear power plant, comprising:

dividing a nuclear island plant into a plurality of modules from top to bottom, respectively manufacturing frames to obtain a plurality of frame modules,

the first layer of frame module is transported to a construction site and poured to form a first layer of molding module,

building a first lap joint platform flush with the first layer of forming modules on one side of the first layer of forming modules, lifting the second layer of frame modules onto the first lap joint platform, transporting the second layer of frame modules onto the first layer of forming modules through the first lap joint platform, and pouring to form second layer of forming modules,

building a second lapping platform which is flush with the second layer of forming modules on the first lapping platform, lifting the third layer of frame modules onto the first lapping platform, then lifting onto the second lapping platform through the first lapping platform, then transporting onto the second layer of forming modules through the second lapping platform, and then pouring to form third layer of forming modules,

and repeating the steps until the construction of all the modules is completed.

2. The modular construction method of a nuclear power plant according to claim 1, characterized in that the frame modules are lifted using a jacking translation device comprising:

a moving mechanism and a support platform (4), the support platform (4) is used for supporting the frame module,

the moving mechanism comprises a self-walking vehicle (5), a climbing rod (12) and a climbing driving part,

the climbing rod (12) penetrates through the supporting platform (4), the lower end of the climbing rod is connected with the self-propelled vehicle (5), the upper end of the climbing rod penetrates out of the frame module, the climbing driving part is connected with the supporting platform (4) and is used for driving the supporting platform (4) to move up and down relative to the climbing rod (12) or driving the climbing rod (12) to move up and down relative to the supporting platform (4), the self-propelled vehicle (5) is used for driving the jacking translation device to translate,

adopt jacking translation device carries out the lifting to the frame module, specifically includes:

s1: the jacking translation device translates the upper layer of the frame module (3) to the side of the corresponding lap joint platform by starting the self-traveling vehicle (5),

s2: the climbing driving part drives the supporting platform (4) to climb upwards on the climbing rod (12) until the distance between the bottom surface of the supporting platform (4) and the lap joint platform is more than or equal to the height of a self-walking vehicle (5),

s3: lifting the first row of non-lifted climbing rods (12) in the translation direction of the jacking translation device until the bottom surfaces of the self-propelled vehicles (5) connected with the row of climbing rods (12) are flush with the top surface of the lap joint platform, advancing the jacking translation device until the self-propelled vehicles (5) connected with the row of climbing rods (12) are supported on the top surface of the lap joint platform,

s4: and repeating the step S3 until all the self-propelled vehicles (5) are supported on the top surface of the lapping platform.

3. The modular construction method of a nuclear power plant according to claim 2,

adopt jacking translation device transports last layer frame module (3) to next floor shaping module (1) through the overlap joint platform on, specifically includes:

s5: the jacking translation device moves forwards to the next layer of forming module (1), a jacking mechanism (9) is arranged between the next layer of forming module (1) and the previous layer of frame module (3) to jack the previous layer of frame module (3) to be separated from the supporting platform (4), then the climbing rod (12) is removed, the self-propelled vehicle (5) is connected with the supporting platform (4), and the jacking translation device moves backwards until the self-propelled vehicle is withdrawn from the space between the next layer of forming module (1) and the previous layer of frame module (3);

s6: the jacking translation device continues to move backwards, the first row of self-traveling vehicles (5) which are not descended in the backward moving direction of the jacking translation device are suspended, the climbing rods (12) penetrate through the supporting platform (4) and then are connected with the suspended self-traveling vehicles (5), the connection between the suspended self-traveling vehicles (5) and the supporting platform (4) is released, the climbing rods (12) are lowered, and the self-traveling vehicles (5) connected with the climbing rods are landed/supported on the next layer of lap-joint platform (6),

s7: repeating the step S6 until all the self-propelled vehicles (5) are landed/supported on the next layer of lapping platform (6),

s8: the jacking mechanism (9) retracts into the next layer of forming module (1) and/or the previous layer of frame module (3) so that the previous layer of frame module (3) is supported on the next layer of forming module (1).

4. The modular construction method of a nuclear power plant as claimed in claim 2, wherein said step S3 is preceded by the further step of:

a first lapping vehicle (8) is arranged on the bottom surface of the front edge of the supporting platform (4) and is supported on the lapping platform;

the step S3 and the step S4 further comprise the following steps:

and (3) removing the first overlapping trolley (8) arranged on the bottom surface of the front edge of the supporting platform (4).

5. Modular construction method of a nuclear power plant according to claim 4, characterized in that said mounting of a first trolley (8) on the bottom of the leading edge of the support platform (4) and its support on the latter comprises in particular:

the jacking translation device moves forwards, the front edge of the supporting platform (4) extends into the upper space of the lapping platform, and the first lapping vehicle (8) which is supported on the lapping platform and is positioned below the front edge of the supporting platform (4) is detachably connected with the supporting platform (4).

6. The modular construction method of a nuclear power plant according to claim 3,

in the step S4, before lifting the last row of non-lifted climbing rods (12) in the advancing direction of the jacking translation device, the method further comprises:

a second lapping vehicle (15) is arranged at the position, between the two rows of backward and forward climbing rods (12), of the bottom surface of the supporting platform (4) and is supported on the lapping platform;

the step S6 and the step S7 further comprise the following steps:

and a second overlapping vehicle (15) arranged on the bottom surface of the supporting platform (4) is removed.

7. The modular construction method of a nuclear power plant according to claim 6,

position installation second overlap joint car (15) between two rows of climbing rod (12) of reciprocal are located in supporting platform (4) bottom surface, and make it support on the overlap joint platform, specifically include:

the jacking translation device moves forwards, the part of the supporting platform (4) to be provided with the second overlapping trolley (15) enters the upper space of the overlapping platform, and the second overlapping trolley (15) which is supported on the overlapping platform and is positioned below the part of the supporting platform (4) to be provided with the second overlapping trolley (15) is detachably connected with the supporting platform (4).

8. The modular construction method of a nuclear power plant according to claim 3,

in the step S7, before the last row of non-lifted climbing rods (12) in the advancing direction of the lower-lying jacking translation device, the method further comprises:

a third lapping vehicle (16) is arranged on the bottom surface of the front edge of the supporting platform (4) and is supported on the lapping platform;

in the step S7, after all the self-propelled vehicles (5) land, the method further includes:

and removing a third overlapping vehicle (16) arranged on the bottom surface of the supporting platform (4).

9. The modular construction method of a nuclear power plant according to claim 3,

the top surface of the next layer of forming module (1) and/or the bottom surface of the upper layer of frame module (3) is provided with a containing groove (17) which can contain the retracted jacking mechanism (9),

in step S5, a jacking mechanism (9) is arranged between the next layer of forming module (1) and the previous layer of frame module (3), and the method specifically comprises the following steps:

a jacking mechanism (9) is arranged in the accommodating groove (17);

in the step S8, the jacking mechanism (9) retracts into the next layer of forming module (1) and/or the previous layer of frame module (3), and specifically includes:

the jacking mechanism (9) retracts into the accommodating groove (17).

10. The modular construction method of a nuclear power plant according to claim 9,

the top surface of the upper layer of frame module (3) is provided with a first channel communicated with the containing groove (17), and the jacking mechanism can be conveyed into the containing groove (17) through the first channel or moved out of the containing groove (17) through the first channel.

11. Modular construction method of a nuclear power plant according to any of claims 2 to 10,

the climbing driving part comprises a plurality of jacks which are distributed around the climbing rod (12) at intervals in the circumferential direction, the jacks are fixedly connected with the supporting platform (4) and provide supporting power for the supporting platform (4),

the jack repeats the action sequence that one of the fixed part and the telescopic part of the jack is fixedly connected with the climbing rod (12), the other part is disconnected with the climbing rod (12), the jack is telescopic, one of the fixed part and the telescopic part of the jack is disconnected with the climbing rod (12), and the other part is fixedly connected with the climbing rod (12), and the jack is reset, so that the supporting platform (4) is lifted relative to the climbing rod (12) or the climbing rod (12) is lifted relative to the supporting platform (4).

12. The modular construction method of a nuclear power plant according to claim 11,

the climbing device is characterized in that a placement hole is formed in the supporting platform (4), the climbing rod (12) penetrates through the supporting platform (4) through the placement hole, and the climbing driving portion is located in the placement hole.

13. The modular construction method of a nuclear power plant according to any of claims 2 to 10,

the translation mechanisms of the jacking translation device are arranged in two rows, the two rows of translation mechanisms are arranged in parallel and are respectively arranged on two sides of the longitudinal center plane of the upper layer of frame module (3),

each lapping platform comprises two walls which are arranged in parallel, the two walls of the first lapping platform are built on the plant site of the steam turbine plant and correspond to the wall sites of two opposite walls of the steam turbine plant to be built, and the two rows of translation mechanisms of the jacking translation devices in a one-to-one manner, the two walls of the upper lapping platform are respectively arranged on the two walls of the lower lapping platform (6) and correspond to the two walls of the lower lapping platform (6) in a one-to-one manner,

and after the nuclear island plant construction is completed, disassembling and building the lap joint platform on the plant site of the steam turbine plant to form two wall bodies of the steam turbine plant.

14. The modular construction method of a nuclear power plant according to claim 13, characterized in that said nuclear island plant comprises: the containment structure, the auxiliary plant and the turbine plant are sequentially arranged along the translation direction of the jacking translation device,

divide the nuclear island factory building into a plurality of modules from last to down to carry out the frame respectively and make, obtain a plurality of frame modules, specifically include:

dividing the auxiliary factory building into n auxiliary factory building modules from top to bottom, dividing the containment structure into n +1 safety shell modules from top to bottom, and respectively manufacturing frames to obtain n auxiliary factory building frame modules and n +1 safety shell frame modules, wherein the mth auxiliary factory building frame module and the mth containment shell frame module are arranged at the same height, n is more than or equal to 2, and m is more than or equal to 1;

the first layer of frame module is transported to and is pour behind the job site, forms first layer shaping module, specifically includes:

the first layer of containment shell frame module and the first layer of auxiliary plant frame module are sequentially transported to a corresponding construction site and then poured to obtain a first layer of containment shell forming module and a first layer of auxiliary plant forming module;

build rather than the first overlap joint platform that flushes at first layer forming module one side, with second floor frame module lifting to first overlap joint platform on, pour after first overlap joint platform transports to first layer forming module again, form second layer forming module, specifically include:

building a first lap joint platform which is flush with a first layer of containment forming module on a plant site of a steam turbine plant and extends to be connected with a first layer of auxiliary plant forming module, lifting a second layer of safety shell frame module onto the first lap joint platform, transporting the second layer of safety shell frame module onto the first layer of containment forming module through the first lap joint platform and the first layer of auxiliary plant forming module, lifting the second layer of auxiliary plant frame module onto the first lap joint platform, transporting the second layer of auxiliary plant frame module onto the first layer of auxiliary plant forming module through the first lap joint platform, and pouring containment to form a second layer of auxiliary plant forming module and a second layer of auxiliary plant forming module;

build the second overlap joint platform that flushes with second floor forming module on first overlap joint platform, with third floor frame module on lifting first overlap joint platform earlier, on first overlap joint platform lifting to second overlap joint platform of back, pour on second overlap joint platform transports second floor forming module on, form third floor forming module, specifically include:

building a second lapping platform which is flush with the second-layer containment forming module on the first lapping platform and extends to be connected with the second-layer auxiliary plant forming module, firstly lifting the third-layer containment frame module onto the first lapping platform, then lifting the third-layer containment frame module onto the second lapping platform through the first lapping platform, then transporting the third-layer auxiliary plant frame module onto the second-layer containment forming module through the second lapping platform and the second-layer auxiliary plant forming module, then lifting the third-layer auxiliary plant frame module onto the first lapping platform, then lifting the third-layer auxiliary plant frame module onto the second lapping platform through the first lapping platform, then transporting the third-layer auxiliary plant frame module onto the second-layer auxiliary plant forming module through the second lapping platform, and pouring to form a third-layer containment forming module and a third-layer auxiliary plant forming module;

the analogy is carried out until the construction of all modules is completed, and the method specifically comprises the following steps:

and analogizing until the construction of the containment forming module at the nth layer and the auxiliary workshop forming module at the nth layer is completed, then lifting the safety shell frame module at the (n + 1) th layer in sequence along the first lapping platform, the second lapping platform (8230; 8230), and then transporting the safety shell frame module to the containment forming module at the nth layer through the nth lapping platform and the auxiliary workshop forming module at the nth layer, and pouring to form the containment forming module at the (n + 1) th layer.

15. The modular construction method of a nuclear power plant as claimed in claim 14, further comprising:

and finishing the construction of the steam turbine plant and the auxiliary plant.

16. The modular construction method of a nuclear power plant according to any of the claims from 3 to 10, characterized in that a through slot (46) is opened on the top surface of the support platform (4), said through slot (46) extending along the translation direction of the support platform (4) and being used for the passage of the jacking mechanism, it comprises a first through slot, a second through slot, \8230 \ 8230and an Nth through slot distributed in sequence along the translation direction of the support platform (4), the first through slot passing through the front side surface of the support platform (4) in the translation direction, the Nth through slot passing through the rear side surface of the support platform (4) in the translation direction, N is greater than or equal to 2,

the distance between the central axis of the jacking mechanism lifted by the front end of the M +1 th through groove and the front side surface of the supporting platform (4) is less than or equal to the distance between the central axis of the jacking mechanism lifted by the rear end of the M +1 th through groove and the front side surface of the supporting platform (4), M is more than or equal to 1,

the specific process of the step S5 includes:

s5.1: the jacking translation device moves forwards to the next layer of forming module (1),

s5.2: arranging jacking mechanisms (9) between the bottom surfaces of the next layer of forming modules (1) and the supporting platform (4), wherein each jacking mechanism (9) comprises a first jacking mechanism (91) and a second jacking mechanism (92), the first jacking mechanisms (91) and the second jacking mechanisms (92) are distributed at intervals along the circumferential direction of the supporting platform (4), the second jacking mechanisms (92) are lifted from the Nth through grooves to jack the rear edge of the bottom surface of the large module, the first jacking mechanisms (91) are arranged between the destination and the front edge of the bottom surface of the supporting platform (4), and the first group of first jacking mechanisms (91) are lifted from the first through grooves to jack the front edge of the bottom surface of the large module so as to jack the large module to be separated from the supporting platform (4),

s5.3: the climbing rod (12) is dismantled, the self-propelled vehicle (5) is connected with the supporting platform (4),

s5.5: the jacking translation device starts to translate to withdraw from the space between the upper layer of frame module (3) and the lower layer of forming module (1), when the first group of first jacking mechanisms (91) are located at the rear ends of the first through grooves, the second group of first jacking mechanisms (91) penetrate through the second through grooves to jack the front edge of the bottom surface of the upper layer of frame module (3), meanwhile, the first group of first jacking mechanisms (91) descend below the bottom surface of the supporting platform (4), so that the jacking translation device can be withdrawn continuously, and the rest is done until the Nth group of first jacking mechanisms (91) penetrate through the Nth through grooves to jack the front edge of the bottom surface of the upper layer of frame module (3), and the withdrawal of the jacking translation device from the destination and the upper layer of frame module (3) is completed.

17. The modular construction method of a nuclear power plant according to claim 16,

two ends of the upper layer of frame module (3) vertical to the translation direction of the supporting platform (4) extend outwards relative to the supporting platform (4),

in step S5.2, the method further includes: and a third jacking mechanism is arranged between one ends of the bottom surfaces of the next layer of forming module (1) and the previous layer of frame module (3) which are vertical to the translation direction of the supporting platform (4), and a fourth jacking mechanism is arranged between the other ends of the bottom surfaces of the next layer of forming module (1) and the previous layer of frame module (3) which are vertical to the translation direction of the supporting platform (4).

18. The modular construction method of a nuclear power plant according to claim 16,

the Mth through groove and the last-but-M through groove are correspondingly arranged, M is larger than or equal to 1, and the Mth through groove and the last-but-M through groove share one group of first jacking mechanisms (91).

19. The modular construction method of a nuclear power plant according to claim 16,

the first through groove, the second through groove, \8230 \ 8230, the Nth through groove is provided with a plurality of through grooves, the plurality of through grooves of each through groove are arranged at intervals along the direction vertical to the translation direction of the supporting platform (4),

and the pattern projected by the plurality of through grooves of each type of through groove onto the upper surface of the supporting platform (4) is symmetrical with respect to the diameter of the upper surface of the supporting platform (4) parallel to the translation direction thereof.

20. The modular construction method of a nuclear power plant according to any of claims 3 to 10,

the supporting platform (4) comprises a supporting platform body (41) and a plurality of supporting arms (45), the supporting arms (45) are rotatably connected to the edge of the supporting platform body (41), the supporting arms (45) are arranged at intervals along the circumferential direction of the supporting platform body (41),

the support arms (45) can rotate around respective hinge points to an unfolded state, so that the support arms (45) and the support platform body (41) form a support structure for supporting the frame module;

the supporting arms (45) can rotate to a recovery state around respective hinge points after the frame modules are jacked to the separation supporting platform (4) by jacking mechanisms distributed on the edges of the bottom surfaces of the supporting arms, and when the supporting arms (45) are in the recovery state, the jacking translation device can be withdrawn from a position between the next layer of forming module (1) and the previous layer of frame module (3);

or the like, or, alternatively,

the supporting platform (4) comprises two supporting units which are arranged in parallel along the translation direction of the supporting platform (4) and are symmetrically arranged relative to the longitudinal central plane of the upper layer of the frame module (3), the two moving mechanisms are correspondingly arranged, the two moving mechanisms correspond to the two supporting units one by one,

each support unit comprises a support platform body (41) and a plurality of support arms (45), the support arms (45) are rotatably connected with the edge of the corresponding support platform body (41), the support arms (45) are arranged at intervals along the circumferential direction of the corresponding support platform body (41),

the support arms (45) can rotate around respective hinge points to an unfolded state, so that the support arms (45) and the two support platform bodies (41) form a support structure for supporting the frame module;

the supporting arms (45) can rotate to a recovery state around respective hinge points after the frame modules are jacked to the separation supporting platform (4) by jacking mechanisms distributed on the edges of the bottom surfaces of the supporting arms, and when the supporting arms (45) are in the recovery state, the jacking translation device can be withdrawn from a position between the next layer of forming module (1) and the previous layer of frame module (3);

the specific process of the step S5 includes:

s5.1: the jacking translation device moves forwards to the next layer of forming module (1),

s5.2: a jacking mechanism (9) is arranged between the bottom edges of the next layer of forming module (1) and the previous layer of frame module (3), the jacking mechanism jacks the previous layer of frame module (3) to be separated from the supporting platform (4), the supporting arms (45) rotate around respective hinge points to be in a recovery state,

s5.3: the climbing rod (12) is dismantled, the self-propelled vehicle (5) is connected with the supporting platform body (41),

s5.4: the jacking translation device translates to withdraw from between the upper layer of the frame module (3) and the lower layer of the forming module (1).

21. Modular construction method of a nuclear power plant according to claim 20, characterized in that the jacking means (9) are provided in plurality, a plurality of jacking means (9) being spaced apart in the circumferential direction of the upper layer of frame modules (3).

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