Container for transporting intact and damaged spent fuel

Abstract

The invention relates to a container for transporting intact and damaged spent fuel. The device comprises a barrel body, a first cover body, a second cover body, a hanging basket and a rotary valve, the cylinder body is a cylinder body with openings in two sides; the first cover body and the second cover body are connected to the openings in the two sides of the cylinder in a sealed mode respectively so that a sealed space can be formed in the cylinder. The hanging basket is arranged in the sealed space; the rotary valve can be rotationally arranged in the sealed space and has a passing state and a closed state in the rotating direction, the hanging basket can pass through the rotary valve in the passing state, and the hanging basket is prevented from passing through the rotary valve and limited between the rotary valve and the second cover body in the closed state. Based on the arrangement of the rotary valve, the hanging basket can pass through in the passing state, and the hanging basket is limited between the rotary valve and the second cover body in the closed state, so that the disassembly and assembly of hoisting can be realized; and the hanging basket is limited, the stability of the hanging basket in the transportation process is ensured, the safety in the transportation process is improved, and the intactness of the spent fuel rod is improved.

Description

Technical Field

[0001] This invention relates to the field of spent fuel transportation equipment, and more particularly to a container for transporting both intact and damaged spent fuel. Background Technology

[0002] With the continuous development of nuclear energy, the amount of spent fuel discharged from nuclear power plant reactors is increasing daily. In the nuclear fuel cycle, in addition to the large-scale transport of spent fuel assemblies, there is also a need for the temporary transfer, inspection, or disposal of individual spent fuel rods. Therefore, there is an urgent need in this field for a single spent fuel rod transport container that can achieve rapid and safe operation, providing excellent cushioning protection and reliable sealing. The container must comprehensively consider multiple aspects such as containment, thermodynamics, mechanics, shielding, and criticality to ensure the safe transport of individual spent fuel rods.

[0003] Currently, the existing spent fuel transport containers in China cannot meet the transportation needs of both intact and damaged individual spent fuel rods. These issues urgently need to be addressed. Summary of the Invention

[0004] This invention discloses a container for transporting intact and damaged spent fuel, aiming to solve the technical problems existing in the prior art.

[0005] The present invention adopts the following technical solution: This invention provides a container for transporting intact and damaged spent fuel, comprising a cylindrical body, a first cover, a second cover, a basket, and a rotary valve; the cylindrical body is open on both sides; the first cover and the second cover are respectively sealed to the two openings on both sides of the cylindrical body to form a sealed space inside the cylindrical body; the basket is disposed within the sealed space; the rotary valve is rotatably disposed within the sealed space and has a passing state and a closed state in the rotation direction; in the passing state, the basket can pass through, and in the closed state, it prevents the basket from passing through and confines the basket between the rotary valve and the second cover.

[0006] In the container for transporting intact and damaged spent fuel according to the present invention, the rotary valve includes a rotary shaft and a valve body; the valve body is disposed within the sealed space and has a first through channel; when the valve body is in the through state, the first through channel connects the sealed spaces on both sides of the valve body to allow the basket to pass through; one end of the rotary shaft is installed on the valve body, and the other end passes through the cylinder and is sealed with the cylinder.

[0007] In the container for transporting intact and damaged spent fuel according to the present invention, the valve body is a sphere, and the first through channel extends along the diameter of the sphere and is in the same direction as the extension direction of the basket in the through state.

[0008] The container for transporting intact and damaged spent fuel according to the present invention further includes a pusher and a third cover; the second cover and the rotary valve are respectively located on both sides of the basket, and the second cover is provided with a third through channel connecting the sealed space and the outside; one end of the pusher is inserted into the third through channel and can move along the extension direction of the third through channel, and the other end faces the basket so as to drive the basket to move when the pusher is pushed; the third cover is sealed to the outer surface of the second cover and blocks the opening of the third through channel.

[0009] In the container for transporting intact and damaged spent fuel according to the present invention, the cross-sectional dimension of the third through channel connecting the sealed space is greater than or equal to the other side, and it is clearance-fitted with the cylinder; the pusher is adapted to the shape of the third through channel.

[0010] In the container for transporting intact and damaged spent fuel according to the present invention, the pusher includes a body and a sealing element; the body is adapted to the shape of the third through channel and is provided with a fifth through channel; one end of the fifth through channel is connected to a sealed space and the other end is connected to the outside; the sealing element is adapted to the shape of the fifth through channel and is disposed within the fifth through channel.

[0011] In the container for transporting intact and damaged spent fuel of the present invention, the cylindrical body with a multi-layer structure includes, from the inside out: a first steel layer, a lead layer, a second steel layer, a boron-containing polyethylene layer, an aluminum silicate cotton layer, and a third steel layer.

[0012] In the container for transporting intact and damaged spent fuel according to the present invention, reinforcing ribs are respectively provided in the lead layer and / or the boron-containing polyethylene layer.

[0013] In the container for transporting intact and damaged spent fuel according to the present invention, the reinforcing ribs are annular plates, arranged perpendicular to the axis of the cylinder, and multiple such plates are spaced apart.

[0014] In the container for transporting intact and damaged spent fuel of the present invention, the cylindrical body further includes a first end cap and a second end cap; the first end cap and the second end cap are respectively disposed at both ends of the cylindrical body, respectively sealingly connecting the first steel layer, the second steel layer and the third steel layer, the first end cap having a first mounting groove on the outer side, and the second end cap having a second mounting groove on the outer side; the first cover and the rotary valve are installed in the first mounting groove; the second cover is installed in the second mounting groove.

[0015] In the container for transporting intact and damaged spent fuel according to the present invention, the first cover is provided with a fourth through channel through which the basket passes; the fourth through channel is sealed by the fourth cover.

[0016] In the container for transporting intact and damaged spent fuel according to the present invention, an air inlet is provided on the first cover; a drain outlet is provided on the second cover; the air inlet and the drain outlet are respectively connected to the sealed space and the outside, and are sealed by a cover plate.

[0017] In the container for transporting intact and damaged spent fuel according to the present invention, the cylinder is provided with lifting lugs and / or trunnions and / or a first rotating shaft.

[0018] The container for transporting intact and damaged spent fuel according to the present invention further includes a first outer cover and a second outer cover; the first outer cover is disposed outside the first cover body and connected to the cylinder body, and a rubber ring is disposed between the first outer cover and the cylinder body; the second outer cover is disposed outside the second cover body and connected to the cylinder body, and a rubber ring is disposed between the second outer cover and the cylinder body.

[0019] The container for transporting intact and damaged spent fuel according to the present invention further includes a first shock absorber and a second shock absorber; the first shock absorber is disposed on one side of the cylinder and covers the end of the cylinder and the first cover; the second shock absorber is disposed on the other side of the cylinder and covers the end of the cylinder and the second cover.

[0020] The technical solution adopted in this invention can achieve the following beneficial effects: This invention primarily provides a container for transporting both intact and damaged spent fuel. It is based on a rotary valve that can switch between a through-state and a closed state. In the through-state, the basket can pass through; in the closed state, the basket is prevented from passing through and confined between the rotary valve and the second cover. This allows for both the assembly and disassembly of the basket and the limiting function of the basket, ensuring its stability during transport, improving transport safety, and preserving the integrity of the spent fuel rods. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below, forming part of the present invention. The illustrative embodiments of the present invention and their descriptions explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings: Figure 1 This is a schematic diagram of the structure of a container for transporting intact and damaged spent fuel according to the present invention; Figure 2 This is one of the partial structural schematic diagrams of a container for transporting intact and damaged spent fuel according to the present invention; Figure 3 This is a second partial structural schematic diagram of a container for transporting intact and damaged spent fuel according to the present invention; Figure 4 This is a third partial structural schematic diagram of a container for transporting intact and damaged spent fuel according to the present invention; Figure 5 This is a structural schematic diagram of the hoisting state of a container for transporting intact and damaged spent fuel according to the present invention; Figure 6 This is a schematic diagram of the structure of the first outer cover of the present invention; Figure 7 This is a schematic diagram of the structure of the cylindrical body of the present invention; Figure 8 and Figure 9 This is a structural diagram of the present invention when the rotating shaft is located in the rotating part; Figure 10 and Figure 11 This is a structural diagram of the present invention when the rotating shaft is located in the sliding part; Figure 12 This is a schematic diagram of the valve body of the present invention with a limiting groove; Figure 13 This is a schematic diagram of the valve seat with a limit block according to the present invention.

[0022] Explanation of reference numerals in the attached figures: 1. Cylinder body; 11. Cylinder body; 111. First steel layer; 112. Lead layer; 113. Second steel layer; 114. Boron-containing polyethylene layer; 115. Aluminum silicate cotton layer; 116. Third steel layer; 12. Reinforcing rib; 13. First end cap; 131. First mounting groove; 14. Second end cap; 141. Second mounting groove; 101. Through hole; 1011. Rotating part; 1012. Sliding part; 2. First cover; 21. Fourth through channel; 22. Air inlet; 3. Second cover 31. Third through channel; 32. Drain outlet; 4. Suspended basket; 5. Rotary valve; 51. Rotary shaft; 52. Valve body; 521. First through channel; 53. Valve seat; 531. Second through channel; 54. Elastic element; 55. Limiting groove; 56. Limiting block; 6. Push seat; 7. Third cover; 8. Fourth cover; 9. Lifting lug; 10. Trunnion; 101. First outer cover; 102. Second outer cover; 103. First shock absorber; 104. Second shock absorber; 105. First rotating shaft. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. In the description of this invention, it should be noted that the term "or" is generally used to include the meaning of "and / or," unless otherwise expressly indicated.

[0024] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or a magnetic connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. Furthermore, in the description of this application, the terms "first," "second," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance. In the description of this invention, "a plurality of" means at least two, such as two, three, or more, unless otherwise explicitly specified.

[0025] Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0026] To address the problems existing in the prior art, embodiments of this application provide a container for transporting both intact and damaged spent fuel.

[0027] like Figures 1-3 As shown, a container for transporting intact and damaged spent fuel includes a cylindrical body 1, a first cover 2, a second cover 3, a basket 4, and a rotary valve 5. The cylindrical body 1 is a cylindrical body with openings on both sides. The first cover 2 and the second cover 3 are respectively sealed to the openings on both sides of the cylindrical body 1 to form a sealed space inside the cylindrical body 1. The basket 4 is disposed in the sealed space. The rotary valve 5 is rotatably disposed in the sealed space and has a passing state and a closed state in the direction of rotation. When it is in the passing state, the basket 4 can pass through. When it is in the closed state, it prevents the basket 4 from passing through and restricts the basket 4 between the rotary valve 5 and the second cover 3, such that the rotary valve 5 and the second cover 3 are in contact with or abut against the basket 4.

[0028] The container for transporting intact and damaged spent fuel of the present invention is based on the setting of a rotary valve 5, which can switch between a through state and a closed state. In the through state, the basket can pass through, and in the closed state, the basket is prevented from passing through and is restricted between the rotary valve and the second cover. Thus, it can realize the assembly and disassembly of the hoisting equipment, and also realize the limiting function of the basket, ensuring the stability of the basket during transportation and improving the safety of the transportation process.

[0029] In some preferred embodiments, such as Figures 1-3As shown, the rotary valve 5 includes a rotating shaft 51 and a valve body 52; the valve body 52 is disposed in a sealed space and has a first through channel 521; when the valve body 52 is in the through state, the first through channel 521 connects the sealed spaces on both sides of the valve body 52 to allow the basket 4 to pass through; one end of the rotating shaft 51 is installed on the valve body 52, and the other end passes through the cylinder 1 and is sealed with the cylinder 1. By rotating the rotating shaft 51 and the valve body 52, the switching between the through state and the closed state can be realized, such as rotating 90° to realize the switching between the through state and the closed state.

[0030] Preferably, the cylinder 1 has a through hole at the position corresponding to the rotating shaft 51, and is sealed by the fifth cover. When it is necessary to operate the rotating shaft 51, the fifth cover is opened, the rotating shaft 51 is rotated, and the fifth cover is closed after the operation is completed.

[0031] Preferably, the cylinder 1 is provided with an indicator structure for indicating the status of the rotary valve 5.

[0032] Preferably, the rotary valve 5 further includes a valve seat 53; the valve seat 53 has a receiving space for accommodating the rotating shaft 51 and the valve body 52, and a second through channel 531 for the basket 4 to pass through; the rotating shaft 51 and the valve body 52 are clearance-fitted with the receiving space; based on the setting of the valve seat 53, the valve body 52 can rotate more flexibly and its position is more stable.

[0033] Preferably, the axis of rotation of the rotating shaft 51 is perpendicular to the axis of the cylinder 1.

[0034] Preferably, such as Figures 8-11 As shown, the cylinder 1 has a through hole 107 through which the rotating shaft 51 passes. The through hole 107 includes a rotating part 1071 and a sliding part 1072 that are interconnected. The rotating shaft 51 is non-circular and can rotate inside the rotating part 1071. When the rotating shaft 51 rotates to the closed state, it can enter the sliding part 1072. The sliding part 1072 restricts the rotation of the rotating shaft 51. That is, when the rotating shaft 51 is in the rotating part 1071, there is a gap between the valve body 52 and the basket 4. When rotated to the closed state, the valve body 42 slides towards the basket 4 within the sliding part 1072, thereby preventing friction between the valve body 42 and the basket 4 during rotation and thus avoiding wear on the basket. Furthermore, the basket 4 is limited by sliding within the sliding part 1072 to approach the basket 4 until it is in contact with or abuts against the basket 4. When the contact or abutment position is reached, the position of the rotary valve 5 is fixed by a pin or elastic element to prevent the rotary valve 5 from rotating during transportation and affecting the stability of the basket 4's limit.

[0035] More preferably, the rotary valve 5 further includes an elastic element 54; the elastic element 54 abuts against the valve seat 53 and the inner wall of the sealing space to push the valve seat 53 toward the basket 4; thereby, when the rotating shaft 51 is in the rotating part 1071 and in the through state, the elastic element 54 presses against the inner wall of the rotating part 1071, increasing the friction between the two, preventing the valve body 52 from rotating during installation and affecting the installation, and limiting the basket 4 under the push of the elastic element 54 when the rotating shaft 51 rotates to the closed state, resulting in a simple structure. Specifically, the elastic element 54 can be elastic rubber or a spring.

[0036] Preferably, the valve body 52 is a sphere, and the first through channel 521 extends along the diameter of the sphere and is in the same direction as the extension direction of the basket 4 when in the through state; more preferably, the first through channel 521 is coaxial with the basket 4, thereby reducing the size of the first through channel 521.

[0037] In some preferred embodiments, such as Figure 12 and Figure 13 As shown, the valve body 52 and valve seat 53 are rotated and limited by a limiting groove 55 and a limiting block 56. Specifically, a limiting groove 55 is provided on the top surface of the valve body 52, and a limiting block 56 is provided on the inner top surface of the valve seat 53. The limiting block 56 is located within the limiting groove 55. When the valve body 52 rotates, the limiting block 56 abuts against both ends of the limiting groove 55 to limit the rotation of the valve body 52. ​​The specific limiting angle for the rotation of the valve body 52 is determined according to the working conditions. Preferably, the projections of the limiting groove 55 and the limiting block 56 along the rotation axis of the valve body 52 are both fan-shaped structures.

[0038] In some preferred embodiments, the first cover 2 and the second cover 3 are both made of steel and are connected to the cylinder 1 by high-strength bolts. A double-layer dovetail groove is provided on the surface that is sealed to the cylinder 1, and a double-layer fluororubber ring is used to achieve the sealing of the inner cover to meet the requirements of containing the contents.

[0039] Preferably, the first cover 2 and the second cover 3 are respectively provided with leak detection interfaces for testing the airtightness of the double O-ring sealing structure.

[0040] In some preferred embodiments, such as Figure 1 and Figure 4As shown, it also includes a push seat 6 and a third cover 7; the second cover 3 and the rotary valve 5 are located on both sides of the suspended basket 4, and the second cover 3 is provided with a third through channel 31 connecting the sealed space and the outside; one end of the push seat 6 is inserted into the third through channel 31 and can move along the extension direction of the third through channel 31, and the other end faces the suspended basket 4 so that the suspended basket 4 can be moved when the push seat 6 is pushed; the third cover 7 is sealed to the outer surface of the second cover 3 and blocks the opening of the third through channel 31. By setting the push seat 6 and the third cover 7, when the suspended basket 4 is assembled and disassembled, the third cover 7 can be opened, and the suspended basket 4 can be pushed out by pushing and pulling the push seat 6, which is convenient for assembly and disassembly. Specifically, the push seat 6 and the second cover 3 are connected by a nut to keep the push seat 6 in a stable position during transportation. The third cover 7 is connected to the cover with high-strength bolts and is sealed with a double-layer rubber ring to meet the requirements of containing the contents.

[0041] Preferably, the cross-sectional dimension of the third through channel 31 connecting the sealed space is greater than or equal to that of the other side, and it is in clearance fit with the cylinder 1; the push seat 6 is adapted to the shape of the third through channel 31; and the push seat 6 is prevented from detaching from the third cover 7 side.

[0042] More preferably, one side of the third through channel 31 connecting the sealed space includes a tapered shape that gradually narrows from the outside to the inside.

[0043] Preferably, the push base 6 includes a body 61 and a sealing element 62; the body 61 is adapted to the shape of the third through channel 31 and is provided with a fifth through channel 611, one end of the fifth through channel 611 is connected to the sealed space and the other end is connected to the outside; the sealing element 62 is adapted to the shape of the fifth through channel 611 and is provided in the fifth through channel 611, such as being screwed to the inner wall of the fifth through channel 611; based on this, when installing the suspended platform 4, the sealing element 62 can be removed, and then the tool used to hook the suspended platform 4 can be inserted to pull the suspended platform 4 in. After the suspended platform 4 is installed in place, the sealing element 62 is installed.

[0044] More preferably, the cross-sectional area of ​​the sealing element 62 on one side of the sealed space is smaller than that on the other side, so as to prevent the sealing element 62 from falling into the sealed space.

[0045] In some preferred embodiments, such as Figure 1 and Figure 7 As shown, the cylinder body 11, with its multi-layer structure, includes, from the inside out: a first steel layer 111, a lead layer 112, a second steel layer 113, a boron-containing polyethylene layer 114, an aluminum silicate cotton layer 15, and a third steel layer 116. The first steel layer 111, lead layer 112, second steel layer 113, boron-containing polyethylene layer 114, and third steel layer 116 provide shielding. The aluminum silicate cotton layer 15 provides thermal insulation, effectively reducing heat transfer to the inside under accident conditions.

[0046] Preferably, reinforcing ribs 12 are provided in the lead layer 112 and / or the boron-containing polyethylene layer 114, thereby improving the overall strength.

[0047] Preferably, the reinforcing rib 12 is an annular plate, which is arranged perpendicular to the axis of the cylinder 1, and multiple ribs are arranged at intervals.

[0048] In some preferred embodiments, such as Figure 1 and Figure 7 As shown, the cylinder 1 also includes a first end cap 13 and a second end cap 14; the first end cap 13 and the second end cap 14 are respectively disposed at both ends of the cylinder body 11, respectively sealingly connecting the first steel layer 111 and the third steel layer 116; the first end cap 13 has a first mounting groove 131 on the outward side, and the second end cap 14 has a second mounting groove 141 on the outward side; the first cover 2 and the rotary valve 5 are installed in the first mounting groove 131; the second cover 3 is installed in the second mounting groove 141.

[0049] Preferably, the first mounting groove 131 is a square groove; the valve seat 53 is a square block adapted to the first mounting groove 131.

[0050] In some preferred embodiments, such as Figure 1 and Figure 3 As shown, the first cover 2 is provided with a fourth through channel 21 through which the suspended basket 4 passes; the fourth through channel 21 is sealed by the fourth cover 8; based on this, during loading / unloading operations, only the fourth cover 8 needs to be removed to complete the loading / unloading operation of the suspended basket, which is convenient and quick. Preferably, the fourth cover 8 is connected to the first cover 2 by high-strength bolts, and a double-layer rubber ring is used to achieve a seal between the fourth cover 8 and the first cover 2.

[0051] In some preferred embodiments, such as Figure 3 As shown, the first cover 2 is provided with an inflation port 22; the second cover 3 is provided with a drainage port 32; the inflation port 22 and the drainage port 32 are respectively connected to the sealed space and the outside world, and are sealed by the sixth cover; thus, the inflation and drainage operations of the container can be realized.

[0052] Preferably, the first cover, second cover, third cover, fourth cover, fifth cover and sixth cover are all sealed by double rubber rings.

[0053] Preferably, the feed inlet 22 and the discharge outlet are offset from the basket 4, thus avoiding the direct direction of radiation from the contents (spent fuel), which can prevent radiation leakage and damage to operators.

[0054] In some preferred embodiments, such as Figure 1 and Figure 5As shown, the cylinder 1 is provided with lifting lugs 9 and / or trunnions 10 and / or first rotating shafts 105, wherein the trunnions 10 and the first rotating shafts 105 can be used together to realize the numerical lifting and flipping of the container; the lifting lugs 9 are used for horizontal lifting of the container.

[0055] In some preferred embodiments, such as Figure 1 As shown, it also includes a first outer cover 101 and a second outer cover 102; the first outer cover 101 is disposed on the outside of the first cover body 2 and connected to the cylinder body 1, and a rubber ring is provided between the first outer cover 101 and the cylinder body 1; the second outer cover 102 is disposed on the outside of the second cover body 3 and connected to the cylinder body 1, and a rubber ring is provided between the second outer cover 102 and the cylinder body 1 to achieve the function of dustproof and rainproof; specifically, the first outer cover 101 and the second outer cover 102 are connected to the cylinder body 1 by high-strength bolts.

[0056] Preferably, such as Figure 6 As shown, both the first outer cover 101 and the second outer cover 102 include a flange ring and a reinforcing rib; the reinforcing rib is in the shape of a grid, is set inside the flange ring, and is connected to the inner edge of the flange ring; thus, the weight is reduced as much as possible while meeting the strength requirements.

[0057] In some preferred embodiments, such as Figure 1 and Figure 2 As shown, it also includes a first shock absorber 103 and a second shock absorber 104; the first shock absorber 103 is disposed on one side of the cylinder 1 and covers the end of the cylinder 1 and the first cover 2 inside; the second shock absorber 104 is disposed on the other side of the cylinder 1 and covers the end of the cylinder 1 and the second cover 3 inside; the first shock absorber 103 and the second shock absorber 104 can absorb the impact energy under normal and accident conditions during container transportation, and reduce the dynamic load acting on the containment boundary and contents.

[0058] Preferably, the first shock absorber 103 and the second shock absorber 104 have the same structure. Taking the first shock absorber 103 as an example, it includes a paulownia wood block 1031 and a rigid shell 1032 covering the surface of the paulownia wood block; the paulownia wood block has a second reinforcing rib 1033 inside; an aluminum silicate cotton layer is provided between the paulownia wood block and the rigid shell; preferably, it includes a plurality of second reinforcing ribs 1033, and the plurality of second reinforcing ribs 1033 are evenly distributed around the axis of the paulownia wood block 1031.

[0059] In some preferred embodiments, the first shock absorber 103 and the second shock absorber 104 are respectively fixed to the shock absorber connecting block 106 on the outside of the cylinder by high-strength bolts.

[0060] In some preferred embodiments, the cover is designed with a leak detection interface for testing the airtightness of the double-layer rubber ring, and a positioning pin is designed between the cover and the cylinder 1.

[0061] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of the present invention.

Claims

1. A container for transporting intact and damaged spent fuel, characterized in that, It includes a cylinder, a first cover, a second cover, a suspended platform, and a rotary valve; The cylinder is open on both sides; The first cover and the second cover are respectively sealed to the openings on both sides of the cylinder to form a sealed space inside the cylinder; The suspended basket is installed within the sealed space; The rotary valve is rotatably disposed within the sealed space and has a passing state and a closed state in the rotation direction. When it is in the passing state, the basket can pass through. When it is in the closed state, the basket is prevented from passing through and is confined between the rotary valve and the second cover.

2. The container for transporting intact and damaged spent fuel according to claim 1, characterized in that, The rotary valve includes a rotating shaft and a valve body; The valve body is disposed within the sealed space and has a first through channel; When the valve body is in the through state, the first through channel connects the sealed spaces on both sides of the valve body to allow the basket to pass through; One end of the rotating shaft is installed on the valve body, and the other end passes through the cylinder and is sealed to the cylinder.

3. The container for transporting intact and damaged spent fuel according to claim 2, characterized in that, The valve body is a sphere, and the first through channel extends along the diameter of the sphere and is in the same direction as the extension direction of the basket when in the through state.

4. The container for transporting intact and damaged spent fuel according to claim 1, characterized in that, It also includes a push base and a third cover; The second cover and the rotary valve are located on both sides of the basket, and the second cover is provided with a third through channel connecting the sealed space and the outside. One end of the pusher is inserted into the third through channel and can move along the extension direction of the third through channel, while the other end faces the basket so that the basket can be moved when the pusher is pushed. The third cover is sealed to the outer surface of the second cover and blocks the opening of the third through channel.

5. The container for transporting intact and damaged spent fuel according to claim 4, characterized in that, The cross-sectional dimension of the third through channel connecting the sealed space is greater than or equal to that of the other side, and it is in clearance fit with the cylinder; the push seat is adapted to the shape of the third through channel.

6. The container for transporting intact and damaged spent fuel according to claim 4, characterized in that, The pusher includes a body and a sealing component; The body is adapted to the shape of the third through channel and is provided with a fifth through channel; One end of the fifth through channel is connected to the sealed space, and the other end is connected to the outside; the sealing component is adapted to the shape of the fifth through channel and is disposed within the fifth through channel.

7. The container for transporting intact and damaged spent fuel according to claim 1, characterized in that, The cylindrical body, with its multi-layer structure, comprises, from the inside out, a first steel layer, a lead layer, a second steel layer, a boron-containing polyethylene layer, an aluminum silicate cotton layer, and a third steel layer.

8. The container for transporting intact and damaged spent fuel according to claim 7, characterized in that, The lead layer and / or the boron-containing polyethylene layer are respectively provided with reinforcing ribs.

9. The container for transporting intact and damaged spent fuel according to claim 8, characterized in that, The reinforcing ribs are annular plates, arranged perpendicular to the axis of the cylinder, and multiple ribs are spaced apart.

10. The container for transporting intact and damaged spent fuel according to claim 7, characterized in that, The cylindrical body also includes a first end cap and a second end cap; The first end cap and the second end cap are respectively disposed at both ends of the cylinder body, and respectively seal and connect the first steel layer, the second steel layer and the third steel layer. The first end cap has a first mounting groove on the side facing outward, and the second end cap has a second mounting groove on the side facing outward. The first cover and the rotary valve are installed in the first mounting groove; The second cover is installed in the second mounting groove.

11. The container for transporting intact and damaged spent fuel according to any one of claims 1-10, characterized in that, The first cover is provided with a fourth through channel through which the suspended basket passes; The fourth through channel is sealed by the fourth cover.

12. The container for transporting intact and damaged spent fuel according to any one of claims 1-10, characterized in that, The first cover is provided with an air inlet; the second cover is provided with a drain outlet; The air inlet and the drain outlet are respectively connected to the sealed space and the outside, and are sealed by a cover plate.

13. The container for transporting intact and damaged spent fuel according to any one of claims 1-10, characterized in that, The cylinder is provided with lifting lugs and / or trunnions and / or a first rotating shaft.

14. The container for transporting intact and damaged spent fuel according to any one of claims 1-10, characterized in that, It also includes a first outer cover and a second outer cover; The first outer cover is disposed on the outside of the first cover body and connected to the cylinder body, and a rubber ring is disposed between the first outer cover and the cylinder body; The second outer cover is disposed on the outside of the second cover body and connected to the cylinder body, and a rubber ring is disposed between the second outer cover and the cylinder body.

15. The container for transporting intact and damaged spent fuel according to any one of claims 1-10, characterized in that, It also includes a first shock absorber and a second shock absorber; The first shock absorber is disposed on one side of the cylinder and covers the end of the cylinder and the first cover inside; The second shock absorber is disposed on the other side of the cylinder and covers the end of the cylinder and the second cover.

Images