Cover structure and transport container

Abstract

The present invention provides a cover structure and a transport container, wherein the cover structure comprises: a cover body and a clamping mechanism arranged at the bottom of the cover body. The cover structure of the present invention has a clamping mechanism arranged at the bottom of the cover body, so when the cover structure is arranged on a nuclear fuel transport container, the clamping mechanism can quickly clamp and fix the nuclear fuel assembly in the transport container, thereby improving the loading and unloading efficiency of the transport container during the loading process of the nuclear fuel assembly, and ensuring the safety of the nuclear fuel assembly during transportation.

Description

Technical Field

[0001] The present invention relates to the technical field of utensil structures, and in particular to a cover structure and a transport container. Background Art

[0002] The safety of nuclear fuel and other radioactive materials must be ensured during transportation, that is, the transport container should meet the relevant requirements under accident conditions specified in regulations and standards. However, in the process of achieving the above-mentioned safe transportation of nuclear fuel, the relevant technology only provides container covers for general scenarios, but lacks container covers specifically suitable for nuclear fuel transportation containers. Summary of the invention

[0003] The present invention is completed in order to at least partially solve the technical problems existing in the prior art.

[0004] The technical solution adopted to solve the technical problem of the present invention is:

[0005] The invention provides a cover structure, which comprises a cover body and a pressing mechanism arranged at the bottom of the cover body.

[0006] Optionally, the clamping mechanism includes: a support member and a clamping member; the support member is arranged at the bottom of the cover body, the clamping member is arranged at the bottom of the support member, a plurality of threaded through holes are arranged on the clamping member, and a matching bolt assembly is arranged in each threaded through hole.

[0007] Optionally, the support member is a cylindrical structure; the pressing member is a convex hexagonal plate-shaped structure; the bottom surface of the cylindrical support member is fixed to the middle area of ​​the top surface of the convex hexagonal plate-shaped pressing member.

[0008] Optionally, the pressing member is provided with two threaded through holes, which are symmetrically arranged with respect to the supporting member.

[0009] Optionally, two sets of the clamping mechanisms are used, and the two sets of the clamping mechanisms are symmetrically arranged at the bottom of the cover body.

[0010] Optionally, the cover body comprises: a base plate and a cover plate arranged on the base plate; a cavity is formed between the base plate and the cover plate, and the cavity is filled with flame-retardant and heat-insulating material.

[0011] Optionally, in the projection direction, the size of the cover plate is smaller than the size of the base plate; and a plurality of threaded through holes are arranged around the base plate.

[0012] Optionally, the cover structure further includes: a handle arranged on the cover body.

[0013] The present invention also provides a transport container, which comprises: a hollow container cylinder, and the above-mentioned cover structure arranged at the end of the container cylinder.

[0014] Beneficial effects:

[0015] The cover structure of the present invention has a clamping mechanism at the bottom of the cover body. When the cover structure is set on a nuclear fuel transport container, the clamping mechanism can quickly clamp and fix the nuclear fuel assembly in the transport container, thereby improving the loading and unloading efficiency of the transport container during the loading of the nuclear fuel assembly, while ensuring the safety of the nuclear fuel assembly during transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 One of the three-dimensional stereograms of the cover structure provided by the embodiment of the present invention;

[0017] Figure 2 A second three-dimensional stereogram of the cover structure provided by an embodiment of the present invention;

[0018] Figure 3 A longitudinal cross-sectional view of a cover structure provided by an embodiment of the present invention.

[0019] In the figure: 1 - base plate; 2 - cover plate; 3 - handle; 4 - pressing piece; 5 - supporting piece; 6 - bolt assembly; 7 - flame retardant heat insulation material. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0021] In the description of the present invention, it is necessary to understand that the orientation or positional relationship indicated by the directional terms is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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.

[0022] like Figures 1 to 3 As shown, this embodiment provides a cover structure, including: a cover body and a clamping mechanism arranged at the bottom of the cover body; the clamping mechanism is used to quickly clamp and fix other components. The cover body and the clamping mechanism can be connected by welding.

[0023] In this embodiment, since a clamping mechanism is provided at the bottom of the cover body, when the cover structure is provided on a nuclear fuel transport container, the clamping mechanism can quickly clamp and fix the nuclear fuel assembly in the transport container, thereby improving the loading and unloading efficiency of the transport container during the loading process of the nuclear fuel assembly, while ensuring the safety of the nuclear fuel assembly during transportation.

[0024] In some specific embodiments, the clamping mechanism includes: a support member 5 and a clamping member 4; the support member 5 is arranged at the bottom of the cover body, and the clamping member 4 is arranged at the bottom of the support member 5. A plurality of threaded through holes are arranged on the clamping member 4, and a matching bolt assembly 6 is arranged in each threaded through hole. The bolt assembly 6 includes a bolt rod, a nut and a support foot. By adjusting the upper and lower positions of the bolt rod in the bolt assembly 6 in the corresponding threaded through hole, other components can be clamped.

[0025] In this embodiment, the clamping mechanism is composed of the support member 5, the clamping member 4 and the bolt assembly 6 arranged on the clamping member. The nuclear fuel assembly is clamped and fixed to the bottom of the cover body through the clamping mechanism.

[0026] In some specific embodiments, the support member 5 is a cylindrical structure; the pressing member 4 is a convex hexagonal plate-shaped structure; and the bottom surface of the cylindrical support member 5 is fixed to the middle area of ​​the top surface of the convex hexagonal plate-shaped pressing member 4 .

[0027] In this embodiment, the shape of the pressing member 4 is specifically a flat convex hexagon, in which two opposite sides are longer and the remaining four sides are shorter.

[0028] In some specific embodiments, the pressing member 4 is provided with two threaded through holes, which are symmetrically arranged with respect to the supporting member 5 .

[0029] In this embodiment, the two threaded through holes are respectively arranged at two opposite corners of the convex hexagonal plate-shaped pressing member.

[0030] In some specific embodiments, two sets of clamping mechanisms are used, and the two sets of clamping mechanisms are symmetrically arranged at the bottom of the cover body.

[0031] In this embodiment, two sets of clamping mechanisms are used to achieve better compression and fixation effects on the nuclear fuel assemblies in the transport container.

[0032] In some specific embodiments, the cover body includes: a bottom plate 1 and a cover plate 2 disposed on the bottom plate 1; a cavity is formed between the bottom plate 1 and the cover plate 2, and the cavity is filled with a flame retardant and heat insulating material 7. The cover plate 2 can be welded to the bottom plate 1.

[0033] In this embodiment, since the cavity between the base plate 1 and the cover plate 2 is filled with flame retardant and heat-insulating material 7, when the cover structure is set on the nuclear fuel transport container, the transport container has a flame retardant and heat-insulating effect, thereby ensuring the safety of nuclear fuel assembly transportation during the transportation of nuclear fuel assemblies or under accident conditions.

[0034] In some specific embodiments, the flame retardant heat insulating material 7 is an aluminum silicate flame retardant heat insulating material.

[0035] In this embodiment, aluminum silicate series flame retardant and thermal insulation materials are evenly distributed in the cover body; aluminum silicate series flame retardant and thermal insulation materials have good flame retardant and thermal insulation effects and appropriate structural strength, which can ensure that the cover structure will not lose its flame retardant and thermal insulation effects even in a falling accident condition.

[0036] In some specific embodiments, Figures 1 to 3 As shown, the cover plate 2 includes: a flat plate and side plates arranged on the edges of the flat plate and extending downward.

[0037] In this embodiment, the bottom of the side plate of the cover plate 2 can be welded to the bottom plate 1 .

[0038] In some specific implementations, in the projection direction, the size of the cover plate 2 is smaller than that of the base plate 1 ; and a plurality of threaded through holes are arranged around the base plate 1 .

[0039] In this embodiment, since the size of the cover plate 2 in the projection direction is smaller than that of the base plate 1, the cover plate 2 cannot completely cover the base plate 1, but leaves a ring-shaped area around the base plate 1. A number of threaded through holes are arranged in the ring-shaped area, and the base plate can be connected to other components by cooperating with corresponding bolt assemblies.

[0040] In some specific embodiments, the cover structure further includes: a handle 3 disposed on the cover body.

[0041] In this embodiment, the number and the position of the handles 3 can be set by those skilled in the art according to actual conditions. For example, two handles 3 can be set.

[0042] The cover structure provided by the present invention has a pressing mechanism at the bottom of the cover body, a flame retardant heat insulating material is filled in the cover body, and a handle is provided on the cover body. When the cover structure is arranged on a nuclear fuel transport container, on the one hand, the nuclear fuel assembly in the transport container can be quickly pressed and fixed, so that during the loading process of the nuclear fuel assembly, the loading and unloading efficiency of the transport container can be improved, and the safety of the nuclear fuel assembly during transportation can be ensured; on the other hand, the transport container has a flame retardant heat insulating effect, so that during the transportation process of the nuclear fuel assembly or under accident conditions, the safety of the transportation of the nuclear fuel assembly can be ensured. Moreover, the cover structure also has the characteristics of simple operation, easy maintenance, and no need for replacement, and can achieve a good pressing effect.

[0043] This embodiment also provides a transport container (not shown in the figure), which includes: a hollow container cylinder, and the above-mentioned cover structure arranged at the end of the container cylinder.

[0044] Specifically, if the container cylinder has only one end, only one cover structure is required to be arranged at the end; if the container cylinder has two ends, a cover structure is arranged at each of the two ends, that is, two cover structures are required.

[0045] The transport container provided by the present invention has the above-mentioned cover structure arranged at the end, and the cover structure has a clamping mechanism and a cover body filled with flame-retardant and heat-insulating materials. This can not only quickly clamp and fix the nuclear fuel assemblies in the transport container, but also make the transport container have flame-retardant and heat-insulating effects, thereby ensuring the safety of the transportation of nuclear fuel assemblies during transportation of the nuclear fuel assemblies or under accident conditions.

[0046] It is to be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those of ordinary skill 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 considered to be within the scope of protection of the present invention.

Claims

1. A cover structure provided on a nuclear fuel transport container, wherein the nuclear fuel transport container contains a nuclear fuel assembly, characterized in that: include: A cover body and a clamping mechanism arranged at the bottom of the cover body; the clamping mechanism includes: a support member and a clamping member; the support member is welded to the bottom of the cover body, the clamping member is arranged at the bottom of the support member, a plurality of threaded through holes are arranged on the clamping member, and a matching bolt assembly is arranged in each threaded through hole; the bolt assembly includes a screw rod, a nut and a support foot, and the nuclear fuel assembly in the nuclear fuel transport container can be clamped and fixed to the bottom of the cover body by adjusting the upper and lower positions of the screw rods in the bolt assembly in the corresponding threaded through holes; the support member is a cylindrical structure; the clamping member is a flat convex hexagonal plate-like structure, in which two opposite sides are longer and the remaining four sides are shorter; the bottom surface of the cylindrical support member is fixed to the middle area of ​​the top surface of the flat convex hexagonal plate-like clamping member.

2. The cover structure according to claim 1, characterized in that: The clamping member is provided with two threaded through holes, which are symmetrically arranged with respect to the supporting member.

3. The cover structure according to claim 1 or 2, characterized in that: The clamping mechanism adopts two sets, and the two sets of the clamping mechanism are symmetrically arranged at the bottom of the cover body.

4. The cover structure according to claim 1, characterized in that: The cover body comprises: a bottom plate and a cover plate arranged on the bottom plate; a cavity is formed between the bottom plate and the cover plate, and the cavity is filled with flame retardant and heat insulating material.

5. The cover structure according to claim 4, characterized in that: In the projection direction, the size of the cover plate is smaller than that of the base plate; and a plurality of threaded through holes are arranged around the base plate.

6. The cover structure according to claim 1, characterized in that: Also includes: A handle is arranged on the cover body.

7. A nuclear fuel transport container, characterized in that: include: A hollow container cylinder, and a cover structure according to any one of claims 1 to 6 arranged at the end of the container cylinder.

Images