CN119640755A - Mounting construction method for shaft type water inlet and outlet rectifying cone of pumped storage power station - Google Patents
Mounting construction method for shaft type water inlet and outlet rectifying cone of pumped storage power station Download PDFInfo
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- CN119640755A CN119640755A CN202411949287.2A CN202411949287A CN119640755A CN 119640755 A CN119640755 A CN 119640755A CN 202411949287 A CN202411949287 A CN 202411949287A CN 119640755 A CN119640755 A CN 119640755A
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Abstract
The invention relates to a construction method for installing a rectifying cone of a vertical shaft type water inlet and outlet of a pumped storage power station, which comprises the steps of lifting a lifting steel truss type steel platform to the position of the vertical shaft type water inlet and outlet through an automobile crane, supporting the lifting steel truss type steel platform on a step at the edge of the top of the water inlet and outlet, adjusting the position of the platform, installing and fixing the platform, arranging a supporting steel pipe at the center position above the lifting steel truss type steel platform, wherein the inner diameter of the supporting steel pipe is smaller than the diameter of the conical end spherical surface of the rectifying cone steel liner, lifting the lower half part of the rectifying cone steel liner to the position of the vertical shaft type water inlet and outlet through the automobile crane, supporting the conical end spherical surface of the rectifying cone steel liner on a supporting steel pipe on the lower Fang Diaola steel truss type steel platform through the steel pipe support frame, lifting the upper half part of the rectifying cone steel liner to the position of the vertical shaft type water inlet and outlet through the steel pipe support frame, welding the upper half part of the rectifying cone steel liner and the rectifying cone steel liner to form the rectifying cone steel liner, and pouring concrete of a rectifying cone by taking the rectifying cone steel liner as a pouring template.
Description
Technical Field
The invention relates to a construction method for installing a rectifying cone of a vertical shaft type water inlet and outlet of a pumped storage power station. The hydraulic and hydroelectric engineering system is suitable for the field of hydraulic and hydroelectric engineering.
Background
The shaft type water inlet on the upper warehouse of the pumped storage power station consists of a top cover, a shaft diffusion section of the split pier, a shaft straight pipe section, a shaft bending section, an accident gate shaft upstream flat hole, an accident gate shaft, a gradual change section and the like. The plane of the vertical shaft top cover is in an equilateral octagon shape, the lower surface of the vertical shaft top cover is an approximately conical rectifying cone, and eight holes are formed by dividing eight middle piers and are horizontally and radially arranged.
Because the vertical shaft type water inlet is limited by the self condition, the diffusion effect flow state of the inlet and the outlet is poor, and the top plate and the rectifying cone are additionally arranged to reduce the head loss, the construction has the following problems that the weight of concrete below the top plate and the weight of the steel lining of the rectifying cone are about 500t, the support and the support in the construction of the rectifying cone are difficult, and the fine adjustment of the steel mould of the rectifying cone part is ensured in the vertical orifice so as to ensure that the steel mould of the cone tip part is nearly vertical.
Disclosure of Invention
The invention aims to solve the technical problems and provides a construction method for installing a rectifying cone of a vertical shaft type water inlet and outlet of a pumped storage power station.
The invention adopts the technical scheme that the construction method for installing the rectifying cone of the vertical shaft type water inlet and outlet of the pumped storage power station is characterized by comprising the following steps:
Hoisting a steel truss type steel platform of a hoisting steel truss to a vertical shaft type water inlet and outlet through an automobile crane, supporting the steel truss type steel platform on a step at the edge of the top of the water inlet and outlet, adjusting the position of the steel truss type steel platform, and installing and fixing the steel truss type steel platform;
A supporting steel pipe is arranged at the center position above the steel truss section steel platform of the hanging and pulling steel, and the inner diameter of the supporting steel pipe is smaller than the diameter of the conical end spherical surface of the rectifying conical steel liner;
hoisting the lower half part of the rectifying cone steel liner to a vertical shaft type water inlet and outlet position through an automobile crane, supporting the cone end spherical surface of the rectifying cone steel liner on a supporting steel pipe on a lower Fang Diaola steel truss type steel platform, and supporting through a steel pipe supporting die frame;
Hoisting the upper half part of the rectifying cone steel lining to the position of a vertical shaft type water inlet and outlet through an automobile crane, supporting through a steel pipe support die frame, and welding the upper half part of the rectifying cone steel lining and the lower half part of the rectifying cone steel lining to form the rectifying cone steel lining;
Carrying out concrete pouring construction of the rectifying cone by taking the rectifying cone steel lining as a pouring template;
The steel truss type steel platform for the hanging and pulling is provided with a main bearing truss, a connecting truss and steel strands, wherein the main bearing truss is provided with a plurality of main truss beams which are in one-to-one correspondence with water inlets and water outlets among the split piers, the plurality of main truss beams are uniformly distributed in a radial shape by taking a middle connecting piece as a center, and adjacent main truss beams are connected through the connecting truss;
The steel strands are uniformly distributed around the center of the steel truss section steel platform, one ends of the steel strands are connected with the middle area of the main bearing truss, and the pulley blocks at the other ends of the steel strands are fixed on the winch beside the split pier.
And pouring concrete in the supporting steel pipe.
The steel pipe support die carrier for supporting the load during the concrete pouring process is arranged on the steel truss section steel platform of the hanging and pulling steel, the steel pipe support die frame is erected by adopting a radial support erection method.
The upper half part of the rectifying cone steel lining is formed by splicing a plurality of tiles in a circumferential direction.
And a plurality of angle steels for supporting and reinforcing are arranged between the hanging steel truss type steel platform and the lower half part of the rectifying conical steel liner.
After the concrete of the rectifying cone reaches the design strength, dismantling the steel pipe support die carrier and the hanging steel truss type steel platform, and comprises the following steps:
dismantling a steel pipe support die frame used for supporting loads during concrete pouring on the steel truss section steel platform of the hanging and pulling steel truss;
Removing the steel stranded wires on the steel truss section steel platform of the hanging and pulling steel truss;
dismantling a contact truss on the steel truss section steel platform of the hanging and pulling steel;
And dismantling the main bearing truss, namely dismantling the main truss beams on the main bearing truss symmetrically on two sides by taking the center of the main bearing truss as a boundary, and taking the rectifying cone steel lining as a hanging point in the dismantling process.
The steel pipe support die carrier and the steel truss section steel platform are dismounted in an auxiliary manner by adopting cantilever rotatable convenient dismounting and lifting equipment;
The rotatable convenient dismouting lifting device of cantilever includes:
an electric hoist track;
the first portal is arranged at the first end of the electric hoist track, and a balancing weight is arranged on the first portal;
the second portal is arranged in the middle of the electric hoist track;
The rotating mechanism is arranged between the electric hoist rail and the first portal frame so that the electric hoist rail can horizontally rotate around the rotating mechanism;
The electric hoist is arranged on the electric hoist track;
And the crane carriage is arranged on the electric hoist track.
The electric hoist is connected with the crane carriage by a connecting rod.
The invention has the beneficial effects that the steel truss type steel platform is hung by the crane, so that the platform can be hoisted to the position of the vertical shaft type water inlet and outlet by the automobile crane, a construction operation platform can be rapidly formed at the position of the vertical shaft type water inlet and outlet, and the construction efficiency is improved.
The main bearing truss of the steel truss type steel platform is provided with a plurality of main truss girders which are in one-to-one correspondence with water inlets and water outlets among the split piers, so that the position interference of the steel truss type steel platform and the split piers is avoided, and the hoisting operation of the steel truss type steel platform is facilitated.
According to the invention, the supporting steel pipe is arranged at the center position above the steel truss section steel platform of the hanging and pulling steel, and the spherical surface of the conical end of the rectifying conical steel liner is supported by the supporting steel pipe, so that the installing position of the rectifying conical steel liner can be conveniently adjusted.
According to the invention, the steel strand is used for controlling the steel truss section steel platform of the lifting steel truss, and the steel strand is matched with the automobile crane to ensure the verticality and the posture of the installation of the conical tip part of the steel truss section steel platform of the lifting steel.
Drawings
Fig. 1 is a schematic view of a vertical shaft type water inlet and outlet in an embodiment.
Fig. 2 is a schematic structural view of a steel truss section steel platform for hanging and pulling in an embodiment.
Fig. 3 is a perspective view of a steel truss section steel platform for a drop down steel truss in an embodiment.
Fig. 4 is a schematic view of a lifting of a steel truss section steel platform in an embodiment.
Fig. 5 is a schematic structural diagram of the embodiment after the hoisting of the lower half of the rectifying conical steel liner is completed.
Fig. 6 is a schematic view of lifting the upper half of the cone steel liner of the rectification in the embodiment.
Fig. 7 is a schematic view of a steel pipe support frame in an embodiment.
Fig. 8 is a schematic structural diagram of a lifting device with rotatable cantilever for convenient disassembly and assembly in an embodiment.
1. Hanging and pulling a steel truss section steel platform; 101, steel strands, 102, a main truss girder, 103, a connecting truss;
2. A steel pipe support die frame;
3. Supporting the steel pipe;
4. A split pier;
5. the device comprises a rectifying cone steel liner, a 501 rectifying cone steel liner lower half part, a 502 rectifying cone steel liner upper half part, a first steel plate and a second steel plate;
6. angle steel;
7. An electric hoist track;
8. A first portal;
9. a second portal;
10. an electric hoist;
11. a crane sports car;
12. and (5) balancing weights.
Detailed Description
For a better understanding of the technical solution of the present application, the following detailed description of the embodiments of the present application refers to the accompanying drawings.
It should be understood that the described embodiments are merely some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The terminology used in the embodiments of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be understood that the term "and/or" as used herein is merely an association relationship describing the associated object, and means that there may be three relationships, e.g., a and/or B, and that there may be three cases where a exists alone, while a and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.
It should be noted that, the terms "upper", "lower", "left", "right", and the like in the embodiments of the present application are described in terms of the angles shown in the drawings, and should not be construed as limiting the embodiments of the present application. In the context of this document, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on the other element or be indirectly on the other element through intervening elements.
In the embodiment 1, structural concrete of a vertical shaft type water inlet and outlet is constructed in a layered and separated mode, and the overall construction sequence of the vertical shaft type water inlet and outlet is that foundation backfill concrete construction below EL625.0, soil blocking grid embedded plate foundation EL 625.0-EL 626.4 concrete pouring (first bin), split pier foundation EL 626.4-EL 628.0 concrete pouring (second bin), split pier EL 628.0-EL 631.7 concrete pouring (third bin), rectifying cone EL 626.665-EL 632.7 concrete pouring (fourth bin), top cover cross beam EL 632.7-EL 633.7 concrete pouring (fifth bin) and wellhead reserved EL 625.0-EL 628.0 concrete backfill pouring (sixth bin).
The embodiment is a construction method for installing a diversion cone of a vertical shaft type water inlet and outlet of a pumped storage power station, which is carried out after pouring of a diversion pier (a third bin) is completed and specifically comprises the following steps:
S100, hoisting a steel truss type steel platform to a vertical shaft type water inlet and outlet through an automobile crane, supporting the steel truss type steel platform on a step (a sixth concrete area is poured later) at the top edge of the water inlet and outlet, adjusting the position of the steel truss type steel platform, and installing and fixing the steel truss type steel platform.
In this embodiment, the steel truss section steel platform is hung and pulled and provided with a main bearing truss, a connecting truss and steel strands, wherein the main bearing truss is provided with a plurality of main truss beams which are in one-to-one correspondence with water inlets and water outlets among the split piers, the plurality of main truss beams are uniformly distributed in a radial shape by taking an intermediate connecting piece as a center, and the adjacent main truss beams are connected through the plurality of connecting trusses.
In this example, the steel strand has a plurality of steel strands and evenly distributed around the center of the steel truss section steel platform of the hanging steel truss, one end of the steel strand is connected with the middle area of the main bearing truss, and the pulley block at the other end is fixed on a winch beside the split pier.
In the embodiment, a supporting steel pipe is arranged at the center position above a steel truss section steel platform of the hanging and pulling type, the inner diameter of the supporting steel pipe is smaller than the diameter of the conical end spherical surface of the rectifying conical steel liner, and concrete is poured in the supporting steel pipe.
S200, hoisting the lower half part of the rectifying cone steel liner to a vertical shaft type water inlet and outlet position through an automobile crane, supporting the cone end spherical surface of the rectifying cone steel liner on a supporting steel pipe on a lower Fang Diaola steel truss type steel platform, and arranging a plurality of angle steels for supporting and reinforcing between the hoisting steel truss type steel platform and the lower half part of the rectifying cone steel liner.
In the embodiment, the verticality and the posture of the lower half part of the rectifying cone steel liner are convenient to adjust through the supporting steel pipe, and meanwhile, the verticality and the posture of the lower half cone tip part of the rectifying cone steel liner are controlled through the steel strand winch and the platform and matched with an automobile crane to ensure the installation.
S300, hoisting the upper half part of the rectifying cone steel lining to a vertical shaft type water inlet and outlet position through an automobile crane, and welding the upper half part of the rectifying cone steel lining and the lower half part of the rectifying cone steel lining to form the rectifying cone steel lining, wherein the upper half part of the rectifying cone steel lining is formed by splicing a plurality of tiles in a circumferential direction.
S400, carrying out concrete pouring construction of the rectifying cone by taking the rectifying cone steel lining as a pouring template, wherein the concrete pouring construction corresponds to the fourth bin and the fifth bin.
In the embodiment, a disc buckle type steel pipe support die frame is erected on a hanging steel truss type steel platform, a radial support erection method is adopted, the disc buckle frame erection modulus is radially met, a disc opening frame horizontal short rod is annularly connected with a vertical rod through a fastener, and the disc buckle type steel pipe support die frame is used for supporting loads during concrete pouring.
S500, after the concrete of the rectifying cone reaches the design strength, dismantling the steel pipe support die frame and the hanging steel truss type steel platform.
S510, dismantling a steel pipe support die frame used for supporting loads during concrete pouring on the steel truss section steel platform of the hanging and pulling steel truss;
s520, removing the steel strands on the steel truss section steel platform of the hanging and pulling steel truss;
s530, dismantling a contact truss on the steel truss section steel platform of the hanging and pulling steel truss;
S540, dismantling the main bearing truss, namely dismantling the main truss girder on the main bearing truss symmetrically on two sides by taking the center of the main bearing truss as a boundary, and taking the rectifying conical steel lining as a hanging point in the dismantling process to be matched with a chain block for dismantling.
In the embodiment, the cantilever rotatable type convenient dismounting and lifting equipment is adopted to assist in dismounting the steel pipe support die carrier and the lifting steel truss type steel platform. The lifting equipment with rotatable cantilevers and convenient disassembly and assembly comprises an electric hoist track, a first portal, a second portal, a rotating mechanism, an electric hoist, a crane carriage and the like.
In this example, the electric hoist track level is arranged, and this electric hoist orbital first end is supported and the bottom surface through first portal, is equipped with the balancing weight on this first portal, and the orbital middle part of electric hoist is supported and ground through the second portal, is equipped with electric hoist and jack-up sports car on the electric hoist track, is connected through the connecting rod between electric hoist and the jack-up sports car, guarantees both to be synchronous.
In the embodiment, the first portal frame is connected with the electric hoist rail through the rotating mechanism, and the electric hoist rail can horizontally rotate around the rotating mechanism, so that the operation coverage range of the cantilever rotatable type lifting equipment convenient to disassemble and assemble is enlarged. The rotating mechanism is provided with a rotating shaft and a bearing, and is provided with a locking device for locking the relative position between the first portal frame and the electric hoist track.
Embodiment 2. The embodiment is a concrete example of embodiment 1, the shaft top cover rectifying cone supporting platform adopts a combination supporting steel bent frame of a hanging steel truss platform and a disc buckle type steel pipe supporting frame, a hanging steel truss steel platform base is arranged at the height of EL625.0m, a concrete structure with the reserved width of 68m at the periphery of a wellhead is post-poured (the reserved width can be adjusted according to the site construction condition), a steel truss base with the width of 16.8m is manufactured by welding, and 4 groups of 4 steel strands with the diameter of 1860 grade phi 15.24 are fixed on a winch beside a pier column by bypassing a pulley block so as to adjust the supporting platform according to the stress condition.
The weight of concrete and steel plates at the cone part of the rectifying cone acting on the supporting truss system is about 500t, in order to ensure effective support of the cone part, supporting steel pipes with phi 377 multiplied by 20 are respectively arranged at the center of a steel platform of the lifting steel truss to support the cone tip part of the rectifying cone, and concrete is poured in the steel pipes with phi 377 multiplied by 20 while the steel mould of the rectifying cone tip is installed, so that the steel mould of the cone tip part is ensured to be nearly vertical. The I12I-steel is welded on the main bearing truss to form a hoop steel support, and meanwhile, the steel strand winch is used for controlling the platform and matched with the automobile crane to ensure the perpendicularity and the posture of the installation of the conical tip part steel mould.
Radial brackets are adopted in the rectifying cone region to set up the module, circular tray buckling frames are adopted to set up the module, tray opening frame horizontal short rods are connected with the vertical rods through fasteners in the circumferential direction, and 900 multiplied by 900mm tray buckling frames are adopted in the rectifying cone cover plate region and are used for supporting loads during concrete pouring.
And (3) hoisting the steel truss platform by using 200t automobile crane, namely slowly turning the steel truss platform to the position above the split pier by using 200t automobile crane, and turning the steel truss platform by a certain angle so as to avoid the split pier to directly enter the orifice, namely (3) hoisting the steel truss platform to the EL625m elevation platform. Hoisting in place and then carrying out embedded part and (5) bolting or welding and fixing.
In the embodiment, the rectifying cone steel lining is installed in an upper part and a lower part, wherein the lower part is directly hoisted and adjusted in place after being manufactured and assembled by a manufacturing plant, and the upper part is transported to the site after being manufactured and assembled by the manufacturing plant due to the fact that the transportation component is considered to be ultra-wide.
Two sets of platforms are erected at the open place of the on-site vertical shaft, one set of the platforms is an assembling platform for assembling tiles into a single-section cone, and the other set of the platforms is an assembling platform for assembling circles of the single-section assembled cone to form the upper half part of the rectifying cone steel liner.
In the embodiment, the tile is spliced by a 25t automobile crane, and the rectifying cone pair circle and the upper half part are hoisted by a 200t automobile crane.
In the embodiment, after the lower half part of the rectifying cone steel lining is spliced in a manufacturing factory, the height of the lower half part is 2.5m, the maximum diameter of the lower half part is about 3.2m, a transportation vehicle is used for transportation on site, 200t automobile cranes are used for hoisting and installing the lower half part in place on site, on-site personnel firstly adjust the level, the elevation and the verticality of the rectifying cone on the lower half part, after the adjustment is finished, angle steel is used for supporting and reinforcing, and a welding platform is built after the reinforcement is finished.
According to construction requirements, after the pouring of the vertical shaft top cover rectifying cone and the 1m thick plate concrete is completed and the design strength is reached, the disc buckle type supporting bent frame at the lower part of the rectifying cone can be detached.
(1) After the steel pipes of all the full-hall scaffolds on the operation platform are removed, removing all the safety net, and removing the upper and lower horizontal tie bars and the scissor struts between all the steel trusses.
(2) And (3) removing the connection of the I12I-steel and the connecting truss, and gradually lifting the I12I-steel out to the EL628.0m ground.
(3) After the I12I-steel is completely removed, removing 16 phi 15.24 steel strands, and then sequentially removing the connecting trusses and paying attention to stacking, so that the turnover use of the top plate is facilitated.
(4) The connection truss is gradually transported outwards by arranging a horizontal hoisting pulley at the bottom of 2.5m from outside to inside in the dismantling sequence of the connection truss, and then is hoisted to the ground by a car.
(5) And after all the linked truss steel beams are dismantled, gradually dismantling the main bearing truss according to the reverse sequence of installation, wherein the main truss is dismantled symmetrically at two sides by taking the truss center point as a boundary, and the outer steel die of the cone is used as a hanging point in the dismantling process to be matched with the chain block for dismantling. The outward transportation of the main bearing truss adopts a horizontal lifting pulley at the bottom of 2.5 m.
In this embodiment, after the rectifying cone is installed and adjusted, the whole shaft hole is covered, and the periphery of the shaft hole is blocked by the diversion pier, so that the automobile crane cannot extend into the shaft hole for hoisting. Therefore, auxiliary operation is carried out by adopting the self-made cantilever rotatable lifting equipment convenient to disassemble and assemble.
After the rotatable convenient dismouting lifting device of cantilever is in ground concatenation completion, hang the rotatable convenient dismouting lifting device of cantilever to the inside second door frame that is close to of reposition of redundant personnel mound department near the drill way edge with the automobile crane, in order to guarantee hoist and mount focus, drive electric hoist and jack-up sports car to first door frame stopper earlier. And controlling the hoisting of the electric hoist after the angle is adjusted. And adding a counterweight on the first portal frame before hoisting, wherein the total counterweight amount is not less than 3.6t.
And after the rectifying cone is installed, the rectifying cone is directly erected on the split pier. And firstly removing the supporting angle steel, polishing, and finally removing the assembly welding in sequence. And sequentially placing the dismantled scaffold and the support platform on the edge of the nearer split pier so as to facilitate hoisting and removing of the cantilever hoisting equipment. After all the supporting angle steel and the assembly welding platform on the section steel truss platform are removed, the cantilever is used for rotatably and conveniently disassembling and assembling lifting equipment to be lifted to the hole, the lifting equipment is moved to the outside of the split pier, and then the lifting equipment is lifted to the transport vehicle by using an automobile crane. And (3) removing connection of the I12I-steel and the connecting truss, and lifting the I12I-steel to the ground by using a cantilever crane step by step. And after the I12I-steel is completely removed, firstly removing 16 phi 15.24 steel strands on the winch.
Claims (8)
1. A construction method for installing a riser cone of a vertical shaft type water inlet and outlet of a pumped storage power station is characterized by comprising the following steps:
Hoisting a steel truss type steel platform of a hoisting steel truss to a vertical shaft type water inlet and outlet through an automobile crane, supporting the steel truss type steel platform on a step at the edge of the top of the water inlet and outlet, adjusting the position of the steel truss type steel platform, and installing and fixing the steel truss type steel platform;
A supporting steel pipe is arranged at the center position above the steel truss section steel platform of the hanging and pulling steel, and the inner diameter of the supporting steel pipe is smaller than the diameter of the conical end spherical surface of the rectifying conical steel liner;
hoisting the lower half part of the rectifying cone steel liner to the position of a vertical shaft type water inlet and outlet through an automobile crane, and supporting the cone end spherical surface of the rectifying cone steel liner on a supporting steel pipe on a lower Fang Diaola steel truss type steel platform;
Hoisting the upper half part of the rectifying cone steel lining to the position of a vertical shaft type water inlet and outlet through an automobile crane, and welding the upper half part of the rectifying cone steel lining and the lower half part of the rectifying cone steel lining to form the rectifying cone steel lining;
Carrying out concrete pouring construction of the rectifying cone by taking the rectifying cone steel lining as a pouring template;
The steel truss type steel platform for the hanging and pulling is provided with a main bearing truss, a connecting truss and steel strands, wherein the main bearing truss is provided with a plurality of main truss beams which are in one-to-one correspondence with water inlets and water outlets among the split piers, the plurality of main truss beams are uniformly distributed in a radial shape by taking a middle connecting piece as a center, and adjacent main truss beams are connected through the connecting truss;
The steel strands are uniformly distributed around the center of the steel truss section steel platform, one ends of the steel strands are connected with the middle area of the main bearing truss, and the pulley blocks at the other ends of the steel strands are fixed on the winch beside the split pier.
2. The construction method for installing the flow rectifying cone of the vertical shaft type water inlet and outlet of the pumped storage power station is characterized in that concrete is poured in the supporting steel pipe.
3. The construction method for installing the flow rectifying cone of the vertical shaft type water inlet and outlet of the pumped storage power station according to claim 1, wherein the steel pipe support die carrier for supporting loads during concrete pouring is arranged on the steel truss type steel platform of the suspended and pulled steel truss, and the steel pipe support die carrier is erected by adopting a radial support erection method.
4. The construction method for installing the rectifying cone of the vertical shaft type water inlet and outlet of the pumped storage power station is characterized in that the upper half part of the rectifying cone steel lining is formed by splicing a plurality of tiles in a circumferential mode.
5. The construction method for installing the rectifying cone of the vertical shaft type water inlet and outlet of the pumped storage power station is characterized in that a plurality of angle steels for supporting and reinforcing are arranged between the steel truss type steel platform of the suspended drawing steel and the lower half part of the rectifying cone steel lining.
6. The construction method for installing a rectifying cone at a shaft type water inlet and outlet of a pumped storage power station according to claim 1, wherein after the concrete of the rectifying cone reaches the design strength, dismantling a steel pipe support die frame and a hanging steel truss type steel platform comprises the following steps:
dismantling a steel pipe support die frame used for supporting loads during concrete pouring on the steel truss section steel platform of the hanging and pulling steel truss;
Removing the steel stranded wires on the steel truss section steel platform of the hanging and pulling steel truss;
dismantling a contact truss on the steel truss section steel platform of the hanging and pulling steel;
And dismantling the main bearing truss, namely dismantling the main truss beams on the main bearing truss symmetrically on two sides by taking the center of the main bearing truss as a boundary, and taking the rectifying cone steel lining as a hanging point in the dismantling process.
7. The construction method for installing the flow rectifying cone of the vertical shaft type water inlet and outlet of the pumped storage power station according to claim 6, which is characterized in that the steel pipe support die carrier and the steel truss type steel platform are dismantled with the aid of cantilever rotatable convenient dismounting and lifting equipment;
The rotatable convenient dismouting lifting device of cantilever includes:
an electric hoist track;
the first portal is arranged at the first end of the electric hoist track, and a balancing weight is arranged on the first portal;
the second portal is arranged in the middle of the electric hoist track;
The rotating mechanism is arranged between the electric hoist rail and the first portal frame so that the electric hoist rail can horizontally rotate around the rotating mechanism;
The electric hoist is arranged on the electric hoist track;
And the crane carriage is arranged on the electric hoist track.
8. The construction method for installing the rectifying cone of the vertical shaft type water inlet and outlet of the pumped storage power station according to claim 7, wherein the electric hoist is connected with the crane carriage by a connecting rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411949287.2A CN119640755A (en) | 2024-12-27 | 2024-12-27 | Mounting construction method for shaft type water inlet and outlet rectifying cone of pumped storage power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411949287.2A CN119640755A (en) | 2024-12-27 | 2024-12-27 | Mounting construction method for shaft type water inlet and outlet rectifying cone of pumped storage power station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN119640755A true CN119640755A (en) | 2025-03-18 |
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ID=94958608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202411949287.2A Pending CN119640755A (en) | 2024-12-27 | 2024-12-27 | Mounting construction method for shaft type water inlet and outlet rectifying cone of pumped storage power station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN119640755A (en) |
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2024
- 2024-12-27 CN CN202411949287.2A patent/CN119640755A/en active Pending
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