Supporting device for hot chamber pre-embedded high-density storage shaft body

Abstract

The utility model discloses a supporting device for a hot chamber pre-embedded high-density storage shaft body, relates to the technical field of storage of highly radioactive materials, and solves the technical problem that a high-density storage shaft body cannot be pre-embedded in a hot chamber in the prior art. The supporting device for the hot chamber pre-embedded high-density storage shaft body comprises a supporting assembly. The template is mounted on the supporting assembly; and the foam plate is laid on the formwork, and a plurality of through holes used for containing and storing the shaft body are formed in the top end of the foam plate. Through the arrangement of the foam plate, the load on the upper portion of the storage well cylinder can be borne, the supporting assembly is prevented from being extruded and deformed in the concrete pouring process, meanwhile, the pre-buried part of the storage well can be effectively prevented from being polluted in the concrete pouring process, and therefore the storage well is convenient to use. According to the supporting device of the hot chamber pre-buried high-density storage well cylinder body, a high-density storage well can be pre-buried, and practicability is higher.

Description

Technical Field

[0001] The utility model belongs to the technical field of strong radioactive material storage, and in particular relates to a supporting device for a high-density storage shaft body pre-buried in a hot chamber. Background Art

[0002] In the field of nuclear power, nuclear fuel is usually made into fuel assemblies to facilitate fission reactions in nuclear reactors. Taking the most common pressurized water reactor nuclear power plant as an example, it uses low-enriched uranium with an enrichment of 3.2% and sintered into uranium dioxide ceramic pellets as nuclear fuel. Hundreds of ceramic pellets are stacked together and loaded into slender zirconium alloy tubes to make nuclear fuel rods, and several nuclear fuel rods are assembled together to form fuel assemblies. When the nuclear fuel in the fuel assembly reacts to a certain burnup depth, it needs to be unloaded from the nuclear reactor. The unloaded nuclear fuel rods are called spent fuel rods.

[0003] Usually, after the fuel rods are irradiated in the reactor, the cores are easily broken and a large amount of fission products are contained in the fuel rod cavity. While the spent fuel rods are being inspected after irradiation, they are segmented into samples, which involves the long-term storage of spent fuel rods and their samples. Spent fuel assemblies or parts contaminated with radioactive materials produced in nuclear facilities must undergo corresponding physical and chemical operations in the hot chamber after being stored and transported to the reprocessing facility to achieve the purpose of volume reduction and resource recycling.

[0004] Among them, storage wells are arranged in the hot chamber, which are used to store spent fuel rods and related solid waste. At present, the storage wells in the hot chamber are all pre-buried with the storage well cylinder. However, when there are many pre-buried storage wells, if conventional construction methods are used, the risk of instability of the support frame during concrete pouring will increase, and construction safety cannot be guaranteed. Utility Model Content

[0005] The utility model provides a supporting device for pre-embedded high-density storage shaft bodies in a hot chamber, which is used to solve the technical problem in the prior art that a hot chamber cannot pre-embedded high-density storage shaft bodies.

[0006] The utility model is realized through the following technical solutions:

[0007] A support device for a hot chamber pre-buried high-density storage shaft body, comprising:

[0008] A support assembly for supporting a storage wellbore;

[0009] A template, mounted on the support assembly;

[0010] A foam board is laid on the template, and a plurality of through holes for accommodating the storage well body are opened on the top of the foam board.

[0011] Furthermore, the support assembly includes:

[0012] There are multiple disc buckle vertical rods, the bottom of the heat chamber is provided with a cavity, the bottom ends of the multiple disc buckle vertical rods are installed on the inner bottom wall of the cavity, and the top ends of the multiple disc buckles extend upward;

[0013] There are multiple disc-locked cross bars, and the multiple disc-locked cross bars are respectively installed between the multiple disc-locked vertical bars.

[0014] Furthermore, it also includes a pad installed at the bottom end of the buckle vertical rod.

[0015] Furthermore, there are multiple pads, and the multiple pads are arranged in one-to-one correspondence with the multiple buckle vertical rods.

[0016] Furthermore, it also includes a plurality of diagonal tie rods, wherein the plurality of diagonal tie rods are installed between every two adjacent disc-buckle vertical rods.

[0017] Furthermore, it also includes an adjustable top support, the number of which is multiple, and the multiple adjustable top supports are respectively installed between the multiple disc buckle vertical rods and the template, and the adjustable top support is used to adjust the horizontality of the template.

[0018] Furthermore, the adjustable top support includes:

[0019] An adjusting screw, the inner side wall of the buckle vertical rod is provided with threads, and one end of the adjusting screw is screwed into the buckle vertical rod;

[0020] A mounting bracket is mounted on the other end of the adjusting screw, and the template is mounted on the mounting bracket.

[0021] Furthermore, there are a plurality of foam boards, and the plurality of foam boards are stacked on the template in sequence, and the through holes on each layer of the foam boards are arranged in a one-to-one correspondence.

[0022] Furthermore, the multiple layers of foam boards on the same layer are laid with staggered seams.

[0023] Furthermore, the foam board is a high-density polystyrene closed-cell foam board.

[0024] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0025] The support device for the pre-embedded high-density storage well body of the hot chamber provided by the utility model comprises a support component, a template and a foam board, the support component is used to support the storage well body, the template is installed on the support component, the foam board is laid on the template, and the top of the foam board is provided with a plurality of through holes for accommodating the storage well body. Through the above structure, when it is necessary to install multiple storage wells in the hot chamber, the support component is first installed in the cavity, the template is then installed on the support component, and then through holes are opened on the foam board according to the installation density of the storage wells, and then the foam board with the holes opened is laid on the template, and then the pre-embedded lower part of the storage well body is installed in the through holes, and finally concrete is poured, and the setting of the foam board can bear the load of the upper part of the storage well body, avoiding the extrusion deformation of the support component during the concrete pouring process, and at the same time, the pre-embedded part of the storage well can be effectively prevented from being contaminated during the concrete pouring process, therefore, the support device for the pre-embedded high-density storage well body of the hot chamber provided by the utility model can pre-embed the high-density storage well, and is more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings described herein are used to provide a further understanding of the embodiments of the present utility model, constitute a part of this application, and do not constitute a limitation of the embodiments of the present utility model. In the drawings:

[0027] Figure 1 A schematic structural diagram of a support device for a hot chamber pre-embedded high-density storage shaft provided in an embodiment of the utility model.

[0028] Marks and corresponding parts names in the attached drawings:

[0029] 1-support assembly, 11-vertical bar with disc buckle, 12-horizontal bar with disc buckle, 13-pad, 2-template, 3-foam board, 4-adjustable top support, 41-adjusting screw, 42-mounting support. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with embodiments and drawings. The schematic implementation manner of the utility model and its description are only used to explain the utility model and are not intended to limit the utility model.

[0031] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it can be directly on the other component or indirectly on the other component. When a component is referred to as being "connected to" another component, it can be directly or indirectly connected to the other component.

[0032] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0034] Example:

[0035] This embodiment provides a support device for a hot chamber pre-embedded high-density storage shaft, which is used to solve the technical problem that a hot chamber cannot pre-embed a high-density storage shaft in the prior art. The support device for a hot chamber pre-embedded high-density storage shaft includes a support assembly 1, a template 2, and a foam board 3, wherein:

[0036] The support assembly 1 is used to support the storage shaft body. Specifically, the support assembly 1 is installed at the bottom of the hot chamber. The support assembly 1 is installed according to the thickness of the floor slab in accordance with the construction requirements.

[0037] The template 2 is installed on the supporting assembly 1.

[0038] The foam board 3 is laid on the template 2. A plurality of through holes for accommodating the storage well body are opened at the top of the foam board 3. The foam board 3 has a large density and is not easy to deform. Through the setting of the through holes, the storage well body is hoisted into the through holes, which is convenient for fixing the storage well body.

[0039] Through the above structure, when it is necessary to install multiple storage wells in the hot chamber, the support component 1 is first installed in the cavity, and then the template 2 is installed on the support component 1, and then through holes are opened on the foam board 3 according to the installation density of the storage wells, and then the foam board 3 with the holes opened is laid on the template 2, and then the pre-embedded lower part of the storage well body is installed in the through hole, and finally concrete is poured. The setting of the foam board 3 can withstand the load on the upper part of the storage well body, avoiding the extrusion deformation of the support component 1 during the concrete pouring process. At the same time, the pre-embedded part of the storage well can be effectively prevented from being contaminated during the concrete pouring process. Therefore, the support device for pre-embedded high-density storage well body in the hot chamber provided by the utility model can pre-embed high-density storage wells, which is more practical.

[0040] An optional implementation of this embodiment is as follows: the support assembly 1 includes a buckle vertical rod 11 and a buckle horizontal rod 12, wherein:

[0041] There are multiple disc-locked vertical rods 11, and a cavity is provided at the bottom of the heat chamber. The bottom ends of the multiple disc-locked vertical rods 11 are installed on the inner bottom wall of the cavity.

[0042] There are also multiple coil cross bars 12, which are respectively installed between multiple coil vertical bars 11. In this way, the support assembly 1 is constructed by the coil vertical bars 11 and the coil cross bars 12, which is easy to disassemble and assemble.

[0043] An optional implementation of this embodiment is as follows: it also includes a pad 13 installed at the bottom end of the disc buckle vertical rod 11. The arrangement of the pad 13 prevents the disc buckle vertical rod 11 from damaging the concrete below it when it is locally stressed.

[0044] Optionally, there are multiple pads 13 , and the multiple pads 13 are arranged in a one-to-one correspondence with the multiple buckle vertical rods 11 .

[0045] An optional implementation of this embodiment is as follows: it also includes a plurality of diagonal tie rods, and the plurality of diagonal tie rods are installed between each two adjacent disc-locked vertical rods 11. In this way, through the setting of the diagonal tie rods, the connection between the two adjacent diagonal tie rods is made more stable, further reducing the probability of deformation of the support assembly 1.

[0046] An optional implementation of the present embodiment is as follows: it also includes an adjustable top support 4, the number of the adjustable top supports 4 is multiple, and the multiple adjustable top supports 4 are respectively installed between the multiple disc-locked vertical rods 11 and the template 2. The adjustable top support 4 is used to adjust the horizontality of the template 2. Each disc-locked vertical rod 11 will have errors during production and installation. By setting the adjustable top support 4, the error is reduced so that the template 2 is level.

[0047] An optional implementation of this embodiment is as follows: the adjustable top support 4 includes an adjusting screw 41 and a mounting support 42, wherein:

[0048] The inner wall of the buckle vertical rod 11 is provided with a thread, and one end of the adjusting screw 41 is screwed into the buckle vertical rod 11. In this way, by rotating the adjusting screw 41, the length of the adjusting screw 41 extending out of the buckle vertical rod 11 can be adjusted, so that the top end of the adjusting screw 41 is located in the same horizontal plane.

[0049] The mounting bracket 42 is mounted on the other end of the adjusting screw 41 , and the template 2 is mounted on the mounting bracket 42 . The arrangement of the mounting bracket 42 makes it easier to connect the adjustable top bracket 4 to an external object.

[0050] An optional implementation of the present embodiment is as follows: there are multiple foam boards 3, and multiple foam boards 3 are stacked on the template 2, and the through holes on each layer of foam boards 3 are arranged one by one. Through the arrangement of multiple foam boards 3, the foam boards 3 are cut and arranged according to construction needs for easy use. At the same time, when laying each layer of foam boards 3, the axes of the corresponding through holes on the foam boards 3 are located on the same straight line, which is convenient for the installation of the storage shaft body.

[0051] Optionally, multiple foam boards 3 on the same layer are laid with staggered seams, so that the foam boards 3 laid with staggered seams are more compact.

[0052] Optionally, the foam board 3 is a high-density polystyrene closed-cell foam board 3 , which is not prone to aging and is durable.

[0053] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A support device for a hot chamber pre-buried high-density storage shaft, characterized in that: include: A support assembly (1) for supporting a storage wellbore; A template (2) mounted on the support assembly (1); A foam board (3) is laid on the template (2), and a plurality of through holes for accommodating the storage well body are opened on the top of the foam board (3).

2. A support device for a hot chamber pre-buried high-density storage shaft body according to claim 1, characterized in that: The support assembly (1) comprises: There are multiple buckle vertical rods (11), the bottom of the heat chamber is provided with a cavity, the bottom ends of the multiple buckle vertical rods (11) are installed on the inner bottom wall of the cavity, and the top ends of the multiple buckles extend upward; There are a plurality of the buckle cross bars (12), and the plurality of the buckle cross bars (12) are respectively installed between the plurality of the buckle vertical bars (11).

3. A support device for a hot chamber pre-buried high-density storage shaft body according to claim 2, characterized in that: It also includes a pad (13) installed on the bottom end of the buckle vertical rod (11).

4. A support device for a hot chamber pre-buried high-density storage shaft body according to claim 3, characterized in that: There are a plurality of the pads (13), and the plurality of the pads (13) are arranged in a one-to-one correspondence with the plurality of the buckle vertical rods (11).

5. A support device for a hot chamber pre-buried high-density storage shaft body according to claim 4, characterized in that: It also includes a plurality of diagonal tie rods, which are installed between every two adjacent disc buckle vertical rods (11).

6. The supporting device for a hot chamber pre-buried high-density storage shaft body according to claim 2, characterized in that: It also includes an adjustable top support (4), wherein the number of the adjustable top supports (4) is multiple, and the multiple adjustable top supports (4) are respectively installed between the multiple buckle vertical rods (11) and the template (2), and the adjustable top supports (4) are used to adjust the horizontality of the template (2).

7. A support device for a hot chamber pre-buried high-density storage shaft body according to claim 6, characterized in that: The adjustable top support (4) comprises: An adjusting screw (41), the inner side wall of the buckle vertical rod (11) is provided with threads, and one end of the adjusting screw (41) is screwed into the buckle vertical rod (11); A mounting bracket (42) is mounted on the other end of the adjusting screw (41), and the template (2) is mounted on the mounting bracket (42).

8. The supporting device for a hot chamber pre-buried high-density storage shaft body according to claim 1, characterized in that: There are a plurality of foam boards (3), and the plurality of foam boards (3) are stacked on the template (2) in sequence, and the through holes on each layer of the foam boards (3) are arranged in a one-to-one correspondence.

9. A support device for a hot chamber pre-buried high-density storage shaft body according to claim 8, characterized in that: The plurality of foam boards (3) located on the same layer are laid with staggered seams.

10. A support device for a hot chamber pre-buried high-density storage shaft according to any one of claims 1 to 9, characterized in that: The foam board (3) is a high-density polystyrene closed-cell foam board (3).

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