Shielded transport container adapter

Abstract

The present disclosure belongs to the field of nuclear power technology, and specifically relates to a shielded transport container transfer device. In the present disclosure, the frame is a U-shaped structure, the inner wall of the frame is adapted to the outer edge contour of the bottom end of the shielded transport container to be transferred, so that the bottom end of the shielded transport container can be embedded in the frame; the first shielding structure is wrapped around the outer wall of the frame, the second shielding structure is a rectangular frame structure, the top end of the second shielding structure is fixedly connected to the bottom end of the frame, and the first shielding structure and the second shielding structure can shield radiation; the bottom plate is fixedly connected to the bottom end of the second shielding structure, and the bottom plate is provided with a through hole along the axial direction. The top opening of the storage container to be docked with the shielded transport container can be adapted to be embedded in the through hole, so that the transfer between the bottom end of the shielded transport container and the top opening of the storage container can be realized. In addition, the shielding of the transfer part by the first shielding structure and the second shielding structure effectively blocks the radiation generated during the transfer process.

Description

Technical Field

[0001] The invention belongs to the technical field of nuclear power, and in particular relates to a shielded transport container switching device. Background Art

[0002] Qinshan Third Nuclear Power Plant (QSP) utilizes CANDU-6 heavy water reactors. Spent fuel is centrally stored in dry storage modules within the plant. Six QM-400 modules have been constructed and commissioned in three batches. To increase the modules' storage capacity, the M1 compact storage module was developed. Each M1 module has a 5x28 container layout, rather than the 4x10 containers of the QM-400. Consequently, the spacing between the containers in each module has been reduced to 1800mm in both length and width. Furthermore, the containers are now supported on the bottom of the module, rather than the top. This prevents the original shielded transport containers (also known as FLASKs) from effectively docking with the containers. Summary of the Invention

[0003] In order to overcome the problems existing in the related art, a shielded transport container switching device is provided.

[0004] According to one aspect of an embodiment of the present disclosure, a shielded transport container transfer device is provided, the shielded transport container transfer device comprising: a frame, a first shielding structure, a second shielding structure, and a bottom plate;

[0005] The frame is a U-shaped structure, and the inner wall of the frame is adapted to the outer edge contour of the bottom end of the shielded transport container to be transferred, so that the bottom end of the shielded transport container can be embedded in the frame;

[0006] The first shielding structure is wrapped around the outer wall of the frame, the second shielding structure is a rectangular frame structure, the top of the second shielding structure is fixedly connected to the bottom of the frame, and the first shielding structure and the second shielding structure are capable of shielding radiation;

[0007] The bottom plate is fixedly connected to the bottom end of the second shielding structure, and a through hole is opened in the axial direction of the bottom plate. The top opening of the storage container to be docked with the shielded transport container can be adapted to be embedded in the through hole to connect the bottom end of the shielded transport container with the top opening of the storage container.

[0008] In a possible implementation, a plurality of guide blocks are provided inside the frame;

[0009] The position distribution of the multiple guide blocks is adapted to the position distribution of the multiple guide grooves axially arranged on the outer side of the bottom end of the shielded transport container. During the insertion of the bottom end of the shielded transport container into the frame, each guide block can be inserted into the corresponding guide groove.

[0010] In a possible implementation, strip-shaped guide structures are provided at both ends of the opening of the frame, and each guide structure and the connected side are located in the same straight line.

[0011] In a possible implementation, the bottom plate is provided with a plurality of pin holes along the axial direction near the edge of the bottom plate;

[0012] The position distribution of the multiple pin holes is adapted to the position distribution of the multiple guide pins axially arranged at the upper end of the storage container. When the top opening of the storage container is embedded in the through hole, each guide pin can be inserted into the corresponding pin hole.

[0013] In a possible implementation, the first shielding structure has a first hollow cavity, and the first hollow cavity is filled with lead.

[0014] In a possible implementation, the first shielding structure is provided with one or more first lead-filling holes, and the one or more first lead-filling holes connect the first hollow cavity and the outside of the first shielding structure, so that lead can be poured into the first hollow cavity through the one or more first lead-filling holes.

[0015] In a possible implementation, the second shielding structure has a second hollow cavity, and the second hollow cavity is filled with lead.

[0016] In a possible implementation, the second shielding structure is provided with a plurality of second lead filling holes, wherein the plurality of second lead filling holes connect the second hollow cavity and the outside of the second shielding structure, and lead can be poured into the second hollow cavity through the plurality of second lead filling holes.

[0017] The beneficial effects of the present disclosure are as follows: the upper frame of the shielded transport container transfer device of the present disclosure is adapted to the bottom end of the shielded transport container, and the lower base plate is adapted to the M1-type module structure, which can realize the transfer between the bottom end of the shielded transport container and the top opening of the storage container. In addition, the shielding of the transfer part by the first shielding structure and the second shielding structure effectively blocks the radiation generated during the transfer process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a cross-sectional view of a shielded transport container transfer device according to an exemplary embodiment.

[0019] Figure 2 The figure is a top view of a shielded transport container transfer device according to an exemplary embodiment.

[0020] In the picture:

[0021] 1. Guide block; 2. Pin hole; 3. Frame; 4. First shielding structure; 5. Second shielding structure;

[0022] 6. Bottom plate; 7. Guide structure. DETAILED DESCRIPTION

[0023] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] Figure 1 is a cross-sectional view of a shielded transport container transfer device according to an exemplary embodiment. Figure 2 FIG. 1 is a top view of a shielded transport container transfer device according to an exemplary embodiment. Figure 1 and Figure 2 As shown, a shielded transport container transfer device comprises: a frame 3, a first shielding structure 4, a second shielding structure 5 and a bottom plate 6;

[0025] The frame 3 is a U-shaped structure, and the inner wall of the frame 3 is adapted to the outer edge contour of the bottom end of the shielded transport container to be transferred, so that the bottom end of the shielded transport container can be embedded in the frame 3;

[0026] The first shielding structure 4 is wrapped around the outer wall of the frame 3. The second shielding structure 5 is a rectangular frame structure. The top of the second shielding structure 5 is fixedly connected to the bottom of the frame 3. The first shielding structure 4 and the second shielding structure 5 can shield radiation.

[0027] The bottom plate 6 is fixedly connected to the bottom end of the second shielding structure 5. The bottom plate 6 has a through hole along the axial direction. The top opening of the storage container to which the shielded transport container needs to be docked can be adapted to be embedded in the through hole to connect the bottom end of the shielded transport container with the top opening of the storage container.

[0028] In one possible implementation, multiple guide blocks 1 are disposed inside the frame. The distribution of these guide blocks matches the distribution of multiple guide slots axially disposed outside the bottom end of the shielded transport container. When the bottom end of the shielded transport container is inserted into the frame, each guide block can be inserted into a corresponding guide slot. This facilitates alignment of the shielded transport container and the frame.

[0029] In one possible implementation, Figure 2 As shown, strip-shaped guide structures 7 are provided at both ends of the opening of the frame 3, and each guide structure is located in the same straight line as the connected side, which can guide the shielded transport container when it is inserted into the frame.

[0030] In one possible implementation, the bottom plate is provided with a plurality of pin holes along the axial direction near the edge of the bottom plate; the position distribution of the plurality of pin holes is adapted to the position distribution of a plurality of guide pins axially arranged at the upper end of the storage container, and when the top opening of the storage container is embedded in the through hole, each guide pin can be inserted into the relative pin hole, which helps to align the through hole of the bottom plate with the top opening of the storage container.

[0031] In one possible implementation, the first shielding structure has a first hollow cavity filled with lead. The first shielding structure defines one or more first lead-filling holes, which connect the first hollow cavity with the outside of the first shielding structure. Lead can be poured into the first hollow cavity through the one or more first lead-filling holes.

[0032] The second shielding structure has a second hollow cavity filled with lead. The second shielding structure defines a plurality of second lead-filling holes, which connect the second hollow cavity with the exterior of the second shielding structure. Lead can be poured into the second hollow cavity through the holes. The first and second lead-filling holes can be sealed after lead filling is completed.

[0033] While various embodiments of the present disclosure have been described above, the foregoing description is intended to be illustrative, non-exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is selected to best explain the principles of the embodiments, their practical applications, or technical improvements to existing technologies, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A shielded transport container transfer device, characterized in that: The shielded transport container transfer device comprises: a frame, a first shielding structure, a second shielding structure and a bottom plate; The frame is a U-shaped structure, and the inner wall of the frame is adapted to the outer edge contour of the bottom end of the shielded transport container to be transferred, so that the bottom end of the shielded transport container can be embedded in the frame; The first shielding structure is wrapped around the outer wall of the frame, the second shielding structure is a rectangular frame structure, the top of the second shielding structure is fixedly connected to the bottom of the frame, and the first shielding structure and the second shielding structure are capable of shielding radiation; The bottom plate is fixedly connected to the bottom end of the second shielding structure, and a through hole is formed in the bottom plate along the axial direction. The top opening of the storage container to be docked with the shielded transport container can be adapted to be embedded in the through hole, thereby connecting the bottom end of the shielded transport container with the top opening of the storage container; A plurality of guide blocks are provided inside the frame; The position distribution of the plurality of guide blocks is adapted to the position distribution of the plurality of guide grooves axially arranged on the outer side of the bottom end of the shielded transport container, and each guide block can be inserted into the corresponding guide groove during the insertion of the bottom end of the shielded transport container into the frame; Strip-shaped guide structures are provided at both ends of the opening of the frame, and each guide structure and the connected side are located in the same straight line.

2. The shielded transport container transfer device according to claim 1, characterized in that: The bottom plate is provided with a plurality of pin holes along the axial direction near the edge of the bottom plate; The position distribution of the multiple pin holes is adapted to the position distribution of the multiple guide pins axially arranged at the upper end of the storage container. When the top opening of the storage container is embedded in the through hole, each guide pin can be inserted into the corresponding pin hole.

3. The shielded transport container transfer device according to claim 1, characterized in that: The first shielding structure has a first hollow cavity filled with lead.

4. The shielded transport container transfer device according to claim 3, characterized in that: The first shielding structure is provided with one or more first lead-filling holes, which connect the first hollow cavity and the outside of the first shielding structure. Lead can be poured into the first hollow cavity through the one or more first lead-filling holes.

5. The shielded transport container transfer device according to claim 1, characterized in that: The second shielding structure has a second hollow cavity, and the second hollow cavity is filled with lead.

6. The shielded transport container transfer device according to claim 5, characterized in that: The second shielding structure is provided with a plurality of second lead-filling holes, which connect the second hollow cavity and the outside of the second shielding structure. Lead can be poured into the second hollow cavity through the plurality of second lead-filling holes.

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