CN216671211U - Container for transferring sensitive section assembly of out-of-pile nuclear detection detector - Google Patents

Abstract

The utility model relates to the technical field of out-of-pile nuclear detection detectors, in particular to a container for transferring a sensitive section assembly of an out-of-pile nuclear detection detector, which comprises a containing shell, wherein a containing cavity which is matched with and used for containing the sensitive section assembly is arranged in the containing shell; the accommodating shell is also provided with a handle and a lifting lug, and the handle forms a holding structure when the container is manually carried; the lifting lugs form a connecting structure for hoisting the container, and the connecting structure is positioned between the accommodating shell and the hoisting device. The container adaptation that is used for out-of-pile nuclear survey detector sensitive section subassembly to transport the transport scene of sensitive section subassembly can accomplish better, more safely through using this container the transport work of sensitive section subassembly.

Description

Container for transferring sensitive segment assembly of out-of-core nuclear detection detector

Technical Field

The utility model relates to the technical field of out-of-core nuclear detection detectors, in particular to a container for transferring a sensitive section assembly of an out-of-core nuclear detection detector.

Background

The nuclear power station out-of-core nuclear measurement detector is arranged at the periphery of a reactor core, is used for measuring the fluence rate of core leakage neutrons, can represent the real-time nuclear power of the reactor, and is used as the input of reactor shutdown and control rod actions. According to the design of the AP1000 pressurized water reactor structure, because the height of a chamber at the bottom of a pressure container is limited, the AP1000 reactor outer nuclear detection detector is installed in a detector well from bottom to top in a segmented mode. The sensitive section assembly of the AP1000 reactor outer nuclear detection detector contains neutron sensitive materials which can react with neutrons; the sensitive segment assembly needs to be fixed to a required position during installation, so that the sensitive segment assembly can correctly receive leakage neutrons of the reactor.

The replacement of the AP1000 out-of-core nuclear detection detector is carried out in a cavity at the bottom of the pressure vessel, and after the segmented disassembly, the sensitive segment assembly needs to be quickly transferred out of the cavity, and then is hoisted and carried until the sensitive segment assembly is transferred to a containment platform and then is transported to a storage position through a vehicle. However, the following problems exist during the handling of the sensitive segment assembly: firstly, the chamber space is limited, the chamber cannot be transported in a direct hoisting mode, and the chamber must be transported to a hoisting place manually and then mechanically transported by a hoisting device; secondly, in the operation process of the nuclear power station reactor, the nuclear detection detector outside the reactor, especially the sensitive segment component reacting with the neutron, can continuously receive high-dose irradiation, so if the sensitive segment component is directly carried by hands, the contact part of the working personnel can be subjected to a large amount of irradiation, and the safety of the working personnel is damaged.

Therefore, a container is required to be used as a carrying carrier of the sensitive segment assembly, but most of the existing nuclear reaction related containers are designed for lifting and transporting materials in an open environment, are relatively large in volume, and have no structure suitable for manual carrying, such as a mechanically sealed transferring container of a nuclear reactor main coolant pump disclosed in chinese patent application No. CN 201811624005.6. Therefore, a container suitable for transporting the sensitive segment component of the AP1000 reactor nuclear detection detector is urgently needed to be designed aiming at the structure and the dismounting environment of the sensitive segment component.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art, and provides a container for transferring a sensitive section assembly of an out-of-pile nuclear detection detector, so as to solve the technical problems in the prior art; the container adaptation that is used for out-of-pile nuclear survey detector sensitive section subassembly to transport the transport scene of sensitive section subassembly can accomplish better, more safely through using this container the transport work of sensitive section subassembly.

The technical solution of the utility model is as follows:

a container for transferring a sensitive segment assembly of an out-of-pile nuclear detection detector comprises a containing shell, wherein a containing cavity which is matched with the sensitive segment assembly is arranged in the containing shell; the accommodating shell is also provided with a handle and a lifting lug, and the handle forms a holding structure when the container is carried manually; the lifting lugs form a lifting connection structure when the container is lifted.

Preferably, the handles are symmetrically arranged on two sides of the accommodating shell.

As a preferred scheme, a plurality of separating connecting pieces are arranged between the handle and the outer side wall of the accommodating shell; when the container is carried manually, the separation connecting pieces form a separation structure between the accommodating shell and two hands held on the handle.

As a preferred scheme, a connecting hole is formed in the position, close to the base, of the accommodating shell; when the container is hoisted, the connecting hole forms a connecting structure between the accommodating shell and the shell bottom connecting device.

Preferably, the three lifting lugs are uniformly and circumferentially arranged on the outer side wall of the accommodating shell at the same height, and the three lifting lugs and the hoisting device jointly form a hoisting structure of the container.

Preferably, the open end of the accommodating cavity of the accommodating shell is provided with a sealing cover.

Preferably, the sealing cover is hinged to the rotation connecting part of the accommodating case through a hinge connecting structure.

Preferably, the sealing cover is detachably covered on the opening end of the accommodating cavity through a plurality of buckles.

Preferably, the housing wall of the accommodating housing includes at least one lead isolation layer.

Preferably, the housing wall of the accommodating housing at least comprises a three-layer structure, which is an inner supporting layer, the isolation layer and an outer supporting layer in sequence from inside to outside, and the inner supporting layer and the outer supporting layer together form a supporting structure of the isolation layer.

The utility model has the beneficial effects that:

1. the accommodating shell is set according to the structure and the size of the sensitive section assembly of the nuclear detection detector outside the reactor, and the accommodating shell is high in adaptability; and according to the carrying scene characteristic that sensitive section subassembly needs earlier artifical transport, machine are hung and are drawn again, be provided with corresponding handle and lug on the holding casing, can adapt the carrying scene in the different stages respectively, make the transport more convenient.

2. The sealing performance of the container can be improved through the sealing cover, and radiation leakage is avoided; meanwhile, the sealing cover is connected to the accommodating shell through the hinge connection structure and the hasp structure, so that the cover can be more conveniently mounted, and the operation is simpler and easier; on the other hand, need not to break away from the holding casing totally with sealed lid, can practice thrift the time of placing, taking sealed lid, can adorn sensitive section subassembly in the holding casing sealedly promptly, has shortened the time that sensitive section subassembly exposes, and then has reduced the external irradiation volume of sensitive section subassembly, has slowed down the potential safety hazard.

3. The inner supporting layer and the outer supporting layer form a clamping and supporting structure of the isolating layer, so that on one hand, the corrosion of the inside and the outside of the container to the isolating layer can be resisted, the interaction between the isolating layer and the outside is weakened, the stability of the isolating layer is ensured, and the stability of the radiation shielding performance is further ensured; on the other hand, the integral impact resistance of the container can be improved through a multi-layer structure, and damage caused by impact is avoided, so that radiation leakage is generated; the safety of the container is further improved.

Further or more specific advantages will be described in the detailed description in connection with the specific embodiments.

Drawings

The utility model is further described with reference to the accompanying drawings:

fig. 1 is a schematic view of the overall assembly structure of the present invention.

Fig. 2 is a schematic view of the shackle assembly structure of the present invention.

Fig. 3 is a structural schematic diagram of a housing wall of the accommodating housing according to the present invention.

Shown in the figure: the container comprises a container body 1, a container cavity 101, a base 102, a connecting hole 103, a rotation connecting part 104, an isolating layer 105, an inner supporting layer 106, an outer supporting layer 107, a handle 2, a separation connecting part 201, a lifting lug 3, a sealing cover 4, a handle 401 and a buckle 5.

Detailed Description

The following description is only a preferred embodiment of the present invention and is not intended to limit the scope of the present invention. In addition, references to the terms "vertical," "horizontal," "top," "bottom," "front," "back," "upper," "lower," "inner," "outer," and the like in embodiments of the utility model are based on the orientation or positional relationship shown in FIG. 1, or the orientation or positional relationship in which the product is conventionally used, for convenience in describing and simplifying the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the utility model. It is further noted that, unless expressly stated or limited otherwise, terms such as "mounted," "connected," "secured," and the like are intended to be construed broadly, and thus, for example, "connected" may be fixedly, releasably, or integrally connected; either directly or indirectly through intervening media, or through both elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

As an embodiment of the present invention, a container for transferring a sensitive segment assembly of an extranuclear nuclear detection probe, referring to fig. 1 to fig. 3, includes a housing case 1, wherein a housing cavity 101 adapted to house the sensitive segment assembly is disposed in the housing case 1; the accommodating shell 1 is also provided with a handle 2 and a lifting lug 3, and the handle 2 forms a holding structure when the container is manually carried; the lifting lug 3 forms a lifting connection structure when the container is lifted, and precisely, the lifting lug 3 forms a connection structure between the accommodating shell 1 and a lifting device when the container is lifted. The hoisting device is preferably of a crane structure, and the hoisting rope is bound and connected to the lifting lug 3 through the crane or the lifting hook is hung on the lifting lug 3, so that the connection between the hoisting device and the accommodating shell 1 is completed.

It should be noted that: according to the structure of the sensitive section assembly of the out-of-core nuclear detection detector, the outer contour of the accommodating shell 1 is designed into a cylindrical long barrel structure, and the accommodating shell is better adapted to a narrow space of a cavity by referring to an attached drawing 1. Further, the accommodating cavity 101 is adapted to accommodate the sensitive segment assembly, so that the accommodating cavity 101 is adapted not only in structure but also in size, so that the sensitive segment assembly can be accommodated in the accommodating cavity 101 more stably, and a person skilled in the art can set the specific structure and size by combining the specific outer contour structure and size of the sensitive segment assembly, which is not described in detail herein and is not shown in the drawings.

Preferably, the sensitive segment assembly is of a strip-shaped structure and has a certain weight, so that multiple persons are required to carry the sensitive segment assembly, the handles 2 are symmetrically arranged on two sides of the accommodating shell 1 in the embodiment, so that a holding space is increased, and the carrying persons on two sides can be uniformly and stably stressed during carrying. Further, in order to avoid the crowding of the carrying space, the handle 2 in this embodiment is an elongated handle adapted to the accommodating housing 1 with a cylindrical long tube structure, and therefore, in order to enhance the connection strength between the handle 2 and the accommodating housing 1, a plurality of partition connectors 201 are provided between the handle 2 and the outer side wall of the accommodating housing 1. Meanwhile, when the container is carried manually, the plurality of partition connecting pieces 201 form a partition structure between the accommodating shell 1 and two hands held on the handle 2; specifically, by controlling the size of the partition connector 201, the distance between the accommodating case 1 and the hands held by the handle 2 can be controlled, so that the hands can be prevented from directly touching the accommodating case 1, and the radiation can be prevented from being directly applied to the human body through the case wall of the accommodating case 1.

Preferably, since the accommodating housing 1 is a long cylindrical structure adapted to the sensitive segment assembly, if the accommodating housing is connected to the hoisting device only through the lifting lug 3, the bottom of the accommodating housing 1 is prone to shaking and dangerous during hoisting and carrying. Therefore, a connection hole 103 is provided near the base 102 of the accommodating housing 1, the connection hole 103 in this embodiment is formed by surrounding the handle 2, the partition connecting member 201, and the outer sidewall of the accommodating housing 1, or a separate connection hole 103 structure may be provided according to an actual connection scenario. When the container is hoisted, one end of a device for connecting the bottom of the shell, such as a rope, a chain, a hook and the like, is bound on the accommodating shell 1 through the connecting hole 103, and the other end of the device is bound on a base or a chassis of the crane, so that a two-point type hoisting structure can be formed for the accommodating shell 1, the stability of hoisting is further improved, and the hidden danger of radiation leakage caused by damage of the accommodating shell 1 due to shaking and impacting is also avoided. In order to further improve the stability of the lifting, in this embodiment, at the same height, the three lifting lugs 3 are uniformly and circumferentially arranged on the outer side wall of the accommodating shell 1; specifically, the outer side wall of the accommodating shell 1 is provided with at least three lifting lugs 3 at intervals in a surrounding manner, and the three lifting lugs 3 are distributed in an equilateral triangle shape when viewed from top to bottom along the lifting direction, and referring to fig. 2, the three lifting ropes on the lifting device are correspondingly connected with the three lifting lugs 3, so that the three lifting lugs 3 and the lifting device form an equilateral triangle lifting structure together.

Preferably, a sealing cover 4 is installed at an opening end of the accommodating cavity 101 of the accommodating shell 1; further, the sealing cover 4 is rotatably connected to the rotation connecting portion 104 of the accommodating case 1 by a hinge connecting structure; still further, the sealing cover 4 is detachably covered on the opening end of the accommodating cavity 101 through a plurality of hasps 5, so that the hasps 5 do not need to be separated from the accommodating shell 1 like screws or pins during disassembly, and the time waste in placing and finding the locking connecting piece is avoided. Moreover, the structure of the buckle 5 is a common locking structure for preventing loosening, and the description of the utility model and the display in fig. 1 can be fully understood by those skilled in the art, so that the detailed description is omitted here. In this embodiment, in order to facilitate opening and closing of the sealing cover 4, a handle 401 is further provided on the sealing cover 4.

Preferably, the housing wall of the accommodating housing 1 includes at least one lead isolation layer 105, and the lead isolation layer 105 can form a radiation shielding surrounding layer to prevent radiation leakage and endanger safety of transport personnel. Further, in this embodiment, the housing wall of the accommodating housing 1 at least includes a three-layer structure, which includes an inner supporting layer 106, the isolation layer 105, and an outer supporting layer 107 in sequence from inside to outside, where the inner supporting layer 106 is preferably formed by a steel structure, and the inner supporting layer 106 and the outer supporting layer 107 together form a supporting structure of the isolation layer 105. Specifically, the lead isolation layer 105 is disposed in a protection layer space formed by the inner support layer 106 and the outer support layer 107, and lead Pb is a high-density, soft, blue-gray metal, so that a layer of lead oxide or basic lead carbonate is easily generated on the surface of lead in the air at normal temperature, and lead is a toxic metal, which causes diarrhea and vomiting due to serious lead poisoning. Therefore, the lead layer is arranged in the protective layer space, so that on one hand, the external erosion can be avoided, the stability of the lead layer structure is ensured, and the stability of the radiation shielding performance is further ensured; on the other hand, the lead metal can be prevented from leaking out, and the environmental pollution is prevented.

In the description herein, references to the description of the terms "embodiment," "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the utility model have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A container for transporting a sensitive section assembly of an out-of-pile nuclear detection detector is characterized in that: the device comprises an accommodating shell (1), wherein an accommodating cavity (101) which is matched with and accommodates the sensitive section assembly is arranged in the accommodating shell (1); the accommodating shell (1) is also provided with a handle (2) and a lifting lug (3), and the handle (2) forms a holding structure when the container is manually carried; the lifting lug (3) forms a lifting connection structure when the container is lifted.

2. The vessel for transporting the sensitive segment assembly of the nuclear detector out of the pile according to claim 1, wherein: the handles (2) are symmetrically arranged on two sides of the accommodating shell (1).

3. The vessel for transporting the sensitive segment assembly of the nuclear detector out of the pile according to claim 2, wherein: a plurality of separating connecting pieces (201) are arranged between the handle (2) and the outer side wall of the accommodating shell (1); when the container is carried manually, the separation connecting piece (201) forms a separation structure between the accommodating shell (1) and two hands held on the handle (2).

4. The vessel for transporting the sensitive segment assembly of the nuclear detector out of the pile according to claim 3, wherein: a connecting hole (103) is formed in the accommodating shell (1) close to the base (102); when the container is hoisted, the connecting hole (103) forms a connecting structure between the accommodating shell (1) and the shell bottom connecting device.

5. The vessel for transporting the sensitive segment assembly of the nuclear detector outside the reactor of claim 1, wherein: on the same height, the three lifting lugs (3) are uniformly and circumferentially arranged on the outer side wall of the accommodating shell (1), and the three lifting lugs (3) and the hoisting device jointly form a hoisting structure of the container.

6. The vessel for transporting the sensitive segment assembly of the nuclear detector out of the pile according to claim 1, wherein: the opening end of the accommodating cavity (101) of the accommodating shell (1) is provided with a sealing cover (4).

7. The vessel for transporting the off-core nuclear detector sensitive segment assembly of claim 6, wherein: the sealing cover (4) is hinged to the rotating connecting part (104) of the accommodating shell (1) through a hinge connecting structure.

8. The vessel for transporting the off-core nuclear detector sensitive segment assembly of claim 7, wherein: the sealing cover (4) is detachably covered on the opening end of the accommodating cavity (101) through a plurality of hasps (5).

9. The vessel for transporting the segment-sensitive package of an extranuclear nuclear detector according to any one of claims 1 to 8, wherein: the housing wall of the accommodating housing (1) comprises at least one lead isolation layer (105).

10. The vessel for transporting the off-core nuclear detector sensitive segment assembly of claim 9, wherein: the housing wall of the accommodating housing (1) at least comprises a three-layer structure, an inner supporting layer (106), the isolation layer (105) and an outer supporting layer (107) are sequentially arranged from inside to outside, and the inner supporting layer (106) and the outer supporting layer (107) jointly form a supporting structure of the isolation layer (105).

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