Spent fuel transporting device

Abstract

The invention relates to the technical field of spent fuel transportation. The spent fuel transportation device comprises a shell, a fuel storage tank, a fuel storage tank and a fuel storage tank, the hanging basket is arranged in the accommodating cavity, and the hanging basket is used for storing spent fuel; the upper cover structure covers the first end of the containing cavity, the upper cover structure is detachably connected with the shell, and the upper cover structure is used for closing or opening the containing cavity; the hoisting structure is arranged on the upper cover opening structure; the hoisting structure comprises a connecting piece which penetrates through the upper cover structure and is connected with the hanging basket, and the hoisting structure is used for loading and unloading the hanging basket from the containing cavity. The upper cover structure and the hoisting structure are arranged, loading and unloading of the hanging basket in the containing cavity can be directly achieved through the hoisting structure after the upper cover structure is disassembled, the hanging basket does not need to be hoisted after the upper cover structure is disassembled, time and labor are saved, operation is easy and convenient, and the loading, unloading and transporting efficiency of spent fuel is improved.

Description

Technical Field

[0001] The invention relates to the technical field of spent fuel transportation, and in particular to a spent fuel transportation device. Background Art

[0002] Spent fuel contains a large amount of long-lived fission products and minor actinium elements, and has a high radiation level. Spent fuel needs to be processed after being temporarily stored for 5 to 10 years after being unloaded from the reactor. However, there is a long distance between the temporary storage site and the spent fuel reprocessing site. The safety, ease of operation, diversity of transported objects, and economy of the equipment for long-distance transportation of spent fuel are particularly important.

[0003] As a special device, spent fuel transport containers must have functions such as sealing, shielding, criticality safety, preheating and export, and structural integrity under accident conditions. At present, when loading and unloading spent fuel, the end cover of the spent fuel transport container needs to be removed before loading and unloading the spent fuel. The operation process is complicated and time-consuming. Summary of the invention

[0004] In view of this, the present invention provides a spent fuel transportation device.

[0005] Specifically, the following technical solutions are included:

[0006] The present application provides a spent fuel transportation device, comprising:

[0007] A housing having a receiving cavity;

[0008] A hanging basket, the hanging basket is arranged in the accommodating chamber, and the hanging basket is used to store spent fuel;

[0009] An upper cover structure, the upper cover structure covers the first end of the accommodating cavity, the upper cover structure and the shell are detachably connected, and the upper cover structure is used to close or open the accommodating cavity;

[0010] A hoisting structure, wherein the hoisting structure is arranged on the upper cover structure;

[0011] The hoisting structure includes a connecting piece, which passes through the upper cover structure and is connected to the hanging basket. The hoisting structure is used to load and unload the hanging basket from the accommodating cavity.

[0012] Preferably, the hoisting structure further comprises a frame, a driving member and a reel;

[0013] The connecting member is flexible and is wound around the reel;

[0014] The frame is connected to the upper cover structure, the driving member is connected to the frame, the reel is rotatably connected to the frame, the driving shaft of the driving member is connected to the reel, and the driving member is used to drive the reel to drive the connecting member to extend or retract.

[0015] Preferably, the upper cover structure comprises a threading hole, the threading hole and the axis of the accommodating cavity are coaxially arranged, and the connecting member passes through the threading hole.

[0016] Preferably, the spent fuel transportation device further includes a lower cover structure;

[0017] The lower cover structure covers the second end of the accommodating cavity, and the lower cover structure is rotatably connected to the shell.

[0018] Preferably, the lower cover structure includes a first shielding body and a second shielding body;

[0019] The first shielding body and the second shielding body are rotatably connected to the shell respectively;

[0020] When the first shielding body and the second shielding body abut against each other, the first shielding body and the second shielding body seal the accommodating cavity;

[0021] When the first shielding body and the second shielding body are separated, the first shielding body and the second shielding body open the accommodating cavity, and the hanging structure loads and unloads the hanging basket from the second end of the accommodating cavity.

[0022] Preferably, the spent fuel transport device further comprises a rotating hinge structure, wherein two rotating hinge structures are provided, one rotating hinge structure is used to connect the first shielding body and the shell, and the other rotating hinge structure is used to connect the second shielding body and the shell;

[0023] The rotating hinge structure includes a bearing seat and a rotating shaft; the axis of the rotating shaft and the axis of the accommodating cavity are arranged in parallel, the bearing seat is connected to the shell, the rotating shaft and the bearing seat are connected through a bearing, and the rotating shaft is connected to the first shielding body or the second shielding body.

[0024] Preferably, the housing includes a main housing, a bottom plate, a fan-shaped plate, and an arc-shaped plate;

[0025] The accommodating cavity is located in the main housing, and the upper cover structure is arranged at the first end of the main housing;

[0026] The sector plate and the arc plate are both arranged at the second end of the main housing, the sector plate is arranged at the first side of the accommodating cavity, the arc plate is arranged at the second side of the accommodating cavity, and the first side of the accommodating cavity and the second side of the accommodating cavity are arranged opposite to each other;

[0027] The bottom plate is an annular plate, and the inner hole diameter on the bottom plate is greater than or equal to the diameter of the accommodating cavity. The bottom plate is respectively connected to the end faces of the fan-shaped plate and the arc-shaped plate on one side away from the main shell body. When the first shielding body and the second shielding body are abutted against each other, the first shielding body and the second shielding body are abutted against the fan-shaped plate and the arc-shaped plate.

[0028] Preferably, the first shielding body is provided with a first connecting ear, and the second shielding body is provided with a second connecting ear;

[0029] The first connecting ear and the second connecting ear are detachably connected via a fastener.

[0030] Preferably, a lever hole is provided on the lower cover structure, and the axis of the lever hole is arranged parallel to the axis of the accommodating cavity;

[0031] The lower cover structure is rotated relative to the shell through the lever and the lever hole to close or open the accommodating cavity.

[0032] Preferably, the hanging basket includes a hanging basket shell, positioning ribs, and a main hanging ring;

[0033] One end of the hanging basket shell has an opening, the spent fuel enters or exits the hanging basket shell from the opening, the main lifting ring is arranged at the outer edge of the opening of the hanging basket shell, the opening of the hanging basket shell faces the upper cover structure, and the main lifting ring is connected to the connecting piece;

[0034] The positioning ribs are arranged on the outer wall of the hanging basket shell, and the positioning ribs and the inner wall of the accommodating cavity are clearance-matched.

[0035] The beneficial effects of the technical solution provided by the present invention include at least:

[0036] The present invention is provided with an upper cover structure and a hoisting structure. After the upper cover structure is disassembled, the hanging basket can be directly loaded and unloaded in the accommodating cavity through the hoisting structure. There is no need to disassemble the upper cover structure and then hoist the hanging basket, which saves time and labor, is simple and convenient to operate, and improves the loading, unloading and transportation efficiency of spent fuel. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0038] Figure 1 A schematic side view of the structure of a spent fuel transport device according to an embodiment of the present invention;

[0039] Figure 2 for Figure 1 Schematic diagram of the AA section structure;

[0040] Figure 3 for Figure 2 Schematic diagram of the BB cross-section structure;

[0041] Figure 4 for Figure 1 Schematic diagram of the CC cross-section structure;

[0042] Figure 5 A schematic cross-sectional view of a housing structure according to an embodiment of the present invention;

[0043] Figure 6 for Figure 5 Schematic diagram of the DD cross-section structure;

[0044] Figure 7 A schematic cross-sectional view of an upper cover structure according to an embodiment of the present invention;

[0045] Figure 8 A schematic diagram of a hoisting structure according to an embodiment of the present invention;

[0046] Fig. 9 A schematic diagram of a rotary hinge structure according to an embodiment of the present invention;

[0047] Fig.10 The figure is a schematic diagram of the structure of a hanging basket according to an embodiment of the present invention.

[0048] The reference numerals in the figures represent respectively:

[0049] 1-first shielding body; 11-first arm; 12-first arm hole; 13-first connecting ear; 14-first lever hole; 2-second shielding body; 21-second arm; 22-second arm hole; 23-second connecting ear; 24-second lever hole; 3-shell; 31-bottom plate; 32-sector plate; 33-reinforcement plate; 34-lifting ear pad; 35-lifting ear; 36-outer shell; 37-inner shell; 38-upper head; 39-arc plate; 310-connecting seat; 4-hanging basket; 41-hanging basket shell; 42-positioning rib; 43-main lifting ring; 44-auxiliary lifting ring; 5-first fastener; 6-upper cover structure; 61-lifting ring screw; 62-cover plate; 63-upper cover shell; 64-threading hole; 65-fastening hole; 7-rotating hinge structure; 7 1-first bearing seat; 72-first thrust bearing; 73-first bearing gasket; 74-first deep groove bearing; 75-first bearing end cover; 76-first bearing fastener; 77-rotating shaft; 78-second bearing gasket; 79-second bearing seat; 710-second bearing end cover; 8-hoisting structure; 81-driving member; 82-first hoisting fastener; 83-second hoisting fastener; 84-hoisting bearing end cover; 85-third hoisting fastener; 86-hoisting shaft; 87-connecting member; 88-frame; 89-first hoisting bearing; 810-fourth hoisting fastener; 811-hoisting bearing gasket; 812-second hoisting bearing; 813-hoisting height positioning member; 814-baffle; 815-reel; 9-second fastener.

[0050] The above drawings have shown a clear embodiment of the present invention, which will be described in more detail below. These drawings and text descriptions are not intended to limit the scope of the present invention in any way, but to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0051] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0052] To make the technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0053] like Figure 1 , Figure 2As shown, the present application provides a spent fuel transportation device, including: a shell 3, the shell 3 has a accommodating cavity; a hanging basket 4, the hanging basket 4 is arranged in the accommodating cavity, and the hanging basket 4 is used to store spent fuel; an upper cover structure 6, the upper cover structure 6 covers the first end of the accommodating cavity, the upper cover structure 6 and the shell 3 are detachably connected, and the upper cover structure 6 is used to close or open the accommodating cavity; a hanging structure 8, the hanging structure 8 is arranged on the upper cover structure; the hanging structure 8 includes a connecting piece 87, the connecting piece 87 passes through the upper cover structure 6 and is connected with the hanging basket 4, and the hanging structure 8 is used to load and unload the hanging basket 4 from the accommodating cavity.

[0054] Specifically, Figure 2 As shown, when placed horizontally, the first end of the accommodating cavity is the right end of the accommodating cavity, and the second end of the accommodating cavity is the left end of the accommodating cavity; when placed vertically, the first end of the accommodating cavity is the upper end of the accommodating cavity, and the second end of the accommodating cavity is the lower end of the accommodating cavity.

[0055] When the upper cover structure 6 is connected to the shell 3 through the first fastener 5, the upper cover structure 6 closes the first end of the accommodating chamber; after the upper cover structure 6 is removed, the first end of the accommodating chamber is opened. When the first end of the accommodating chamber is opened, the hanging basket 4 in the accommodating chamber can be hoisted by the hoisting structure 8 to realize the loading and unloading of spent fuel.

[0056] Specifically, the first fastener 5 is a fastening screw. Figure 1 As shown, the upper cover structure 6 is connected to the housing 3 via a plurality of first fasteners 5. The plurality of first fasteners 5 are evenly arranged circumferentially around the axis of the accommodating cavity.

[0057] Specifically, Figure 2 As shown, the upper cover structure 6 includes a threading hole 64 , the threading hole 64 and the axis of the accommodating cavity are coaxially arranged, the connecting member 87 passes through the threading hole 64 , and one end of the connecting member 87 is connected to the hanging basket 4 .

[0058] Specifically, Figure 2 and Figure 7 As shown, the upper cover structure 6 also includes a lifting eye screw 61, a cover plate 62, an upper cover shell 63, and a fastening hole 65. The lifting eye screw 61 is arranged on one side end face of the cover plate 62, and is used to connect with a crane to realize the disassembly and assembly of the upper cover structure 6. When the upper cover structure 6 is hoisted, the hanging basket 4 can be hoisted through the hoisting structure 8. An upper cover shell 63 is arranged on the side end face opposite to the end face where the lifting eye screw 61 is arranged, and a lead shielding material is arranged in the upper cover shell 63. When the upper cover structure 6 is covered on the first end of the accommodating cavity, the upper cover shell 63 is located in the accommodating cavity, and the cover plate 62 is connected to the shell 3 to ensure radiation safety during transportation. The threading hole 64 passes through the cover plate 62 and the upper cover shell 63, and the axis of the threading hole 64 is coaxially arranged with the axis of the accommodating cavity. A fastening hole 65 is also arranged on the cover plate 62, and the first fastener 5 passes through the fastening hole 65 and is connected to the shell 3.

[0059] The cover plate 62 and the upper cover shell 63 are connected by welding.

[0060] Preferably, Figure 2 and Figure 8 As shown, the hoisting structure 8 also includes a frame 88, a driving member 81 and a reel 815, and the connecting member 87 is flexible and is wound around the reel 815. The frame 88 is connected to the upper cover structure 6, the driving member 81 is connected to the frame 88, the reel 815 is rotatably connected to the frame 88, the driving shaft of the driving member 81 is connected to the reel 815, and the driving member 81 is used to drive the reel 815 to drive the connecting member 87 to extend or retract.

[0061] Specifically, in this embodiment, the connecting member 87 is a steel wire rope, which is wound on the drum 815. The driving member 81 is a driving motor. Under the driving force of the driving member 81, the drum 815 rotates, and the length of the connecting member 87 connected to the hanging basket 4 is adjusted, and the hanging basket 4 is hoisted by extending and retracting the connecting member 87.

[0062] Specifically, Figure 8As shown, the hoisting structure 8 also includes a first hoisting fastener 82, a second hoisting fastener 83, a third hoisting fastener 85, a hoisting bearing end cover 84, a hoisting shaft 86, a first hoisting bearing 89, a fourth hoisting fastener 810, a hoisting bearing gasket 811, a second hoisting bearing 812, a hoisting height positioning member 813, and a baffle 814. The frame 88 is welded to the cover plate 62. The frame 88 is provided with a first mounting plate, a second mounting plate and a third mounting plate arranged in parallel, the driving member 81 is connected to the first mounting plate through the first hoisting fastener 82, the reel 815 is located between the second mounting plate and the third mounting plate, the reel 815 is sleeved on the hoisting shaft 86, and the hoisting shaft 86 drives the reel 815 to rotate in the same direction. One end of the hoisting shaft 86 is connected to the third mounting plate via a first hoisting bearing 89. A bearing end cover is provided on the side of the third mounting plate away from the reel 815, and the bearing end cover is fixed to the third mounting plate via a fourth hoisting fastener 810. The second mounting plate and the hoisting shaft 86 are connected via a second hoisting bearing 812. Two second hoisting bearings 812 are provided. A hoisting bearing gasket 811 is provided between the two second hoisting bearings 812. The hoisting bearing gasket 811 is used to reduce the friction between the two second hoisting bearings 812. A hoisting bearing end cover 84 is provided on the side of the second mounting plate away from the reel 815. The hoisting bearing end cover 84 is connected to the second mounting plate via a third hoisting fastener 85. One end of the hoisting shaft 86 close to the first mounting plate is connected to the drive shaft of the driving member 81. Driven by the driving member 81, the hoisting shaft 86 drives the reel 815 to rotate synchronously in the same direction. A thread is provided on the lifting shaft 86, and the thread is located between the second mounting plate and the first mounting plate. A lifting height positioning piece 813 is provided on the thread. As the lifting shaft 86 rotates, the lifting height positioning piece 813 moves along the axial extension direction of the lifting shaft 86. The baffle 814 is provided on the side of the first mounting plate facing the second mounting plate, and is connected to the second mounting plate through the second lifting fastener 83. A sensor matching the lifting height positioning piece 813 is provided on the baffle 814. Through the cooperation of the sensor and the lifting height positioning piece 813, the extension length of the connecting piece 87 can be obtained, so as to facilitate the lifting of the hanging basket 4.

[0063] The arrangement of the hoisting structure 8 enables the loading and unloading of the spent fuel containment chamber at the upper end and the loading and unloading of the spent fuel containment chamber at the lower end, which not only ensures the loading and unloading depth, but also improves the operational adaptability.

[0064] like Figure 2 , Figure 3 and Figure 4 As shown, the spent fuel transport device further includes a lower cover structure. The lower cover structure covers the second end of the accommodating chamber, and the lower cover structure is rotatably connected to the shell 3. When the lower cover structure covers the second end of the accommodating chamber, the accommodating chamber is closed, and when the lower cover structure rotates away from the second end of the accommodating chamber, the accommodating chamber is opened. When the accommodating chamber is opened, the hanging basket 4 can be loaded and unloaded from the second end of the accommodating chamber.

[0065] The present application has an upper cover structure 6 and a lower cover structure. The loading and unloading of the hanging basket 4 can be achieved by disassembling the upper cover structure 6 or by rotating the lower cover structure. The present application realizes a variety of options for loading and unloading the hanging basket 4. The upper cover structure 6 and the lower cover structure are adopted to improve the radiation shielding ability and realize the transportation of spent fuel with different total activity concentrations. On the basis of ensuring safety, the manufacturing and transportation costs of the device are reduced and the use efficiency of the device is improved. The lower cover structure realizes the function of vertical bottom loading and unloading of spent fuel, solves the radiation problem caused by the naked hanging of spent fuel, and ensures radiation safety.

[0066] like Figure 2 and Figure 4 As shown, the lower cover structure includes a first shielding body 1 and a second shielding body 2. The first shielding body 1 and the second shielding body 2 are rotatably connected to the shell 3 respectively. When the first shielding body 1 and the second shielding body 2 are against each other, the first shielding body 1 and the second shielding body 2 close the accommodating cavity. When the first shielding body 1 and the second shielding body 2 are separated, the first shielding body 1 and the second shielding body 2 open the accommodating cavity, and the hoisting structure 8 loads and unloads the hanging basket 4 from the second end of the accommodating cavity.

[0067] Specifically, Figure 3 As shown, the first shielding body 1 and the second shielding body 2 are in a closed state, and the first shielding body 1 and the second shielding body 2 are against each other. The first shielding body 1 and the second shielding body 2 are turned from closed to separated, or from separated to closed, and the first shielding body 1 and the second shielding body 2 rotate in opposite directions. The rotation direction of the first shielding body 1 is as shown in FIG. Figure 3 As shown by the left arrow in FIG. , the rotation direction of the second shielding body 2 is as follows Figure 3 For example, when the second shielding body 2 is separated, the first shielding body 1 rotates toward the first side of the shell 3, and the second shielding body 2 rotates toward the second side of the shell 3, and the first side of the shell 3 and the second side of the shell 3 are arranged opposite to each other.

[0068] Preferably, Figure 5 and Figure 6 As shown, the shell 3 includes a main shell, a bottom plate 31, a sector plate 32, and an arc plate 39. The main shell includes a reinforcing plate 33, an outer shell 36, an inner shell 37, and an upper head 38. The outer shell 36 is set on the outside of the inner shell 37. The inner shell 37 and the outer shell 36 are both cylindrical. The upper head 38 is set at the first end of the outer shell 36 and the inner shell 37 ( Figure 5 The reinforcing plate 33 is disposed at the second end ( Figure 5The left end of the main body is welded with the reinforcing plate 33, the outer shell 36, the inner shell 37 and the upper head 38. The annular space formed by the reinforcing plate 33, the outer shell 36, the inner shell 37 and the upper head 38 is filled with lead shielding material to form a radiation shielding structure to ensure radiation safety during transportation. The accommodating cavity is located in the main shell, and the upper cover structure 6 is connected to the upper head 38 at the first end of the main shell.

[0069] The fan plate 32 and the arc plate 39 are both arranged at the second end of the main housing, and the fan plate 32 is arranged at the first side of the accommodating cavity (such as Figure 6 The arc plate 39 is arranged on the second side of the accommodating cavity (such as Figure 6 The upper side of the accommodating cavity), the first side of the accommodating cavity and the second side of the accommodating cavity are arranged opposite to each other. The sector plate 32 and the arc plate 39 are welded to the end face of the reinforcing plate 33, and the bottom plate 31 is welded to the end face of the arc plate 39 and the sector plate 32 away from the reinforcing plate 33. The sector plate 32 is sector-shaped, and the sector plate 32 is a symmetrical structure. The arc plate 39 is semicircular, and the arc plate 39 is a symmetrical structure. The symmetry plane of the arc plate 39 and the sector plate 32 are symmetrical along the same plane. It can be understood that the arc plate 39 and the sector plate 32 shall not affect the loading and unloading operation of the hanging basket 4 from the second end of the accommodating cavity. Figure 4 As shown, the abutting surfaces of the first shielding body 1 and the second shielding body 2 are inclined surfaces. In this embodiment, the radial length of the end surface of one side of the first shielding body 1 close to the main shell in the CC section is greater than the radial length of the end surface of one side of the first shielding body 1 away from the main shell in the CC section, and the radial length of the end surface of one side of the second shielding body 2 close to the main shell in the CC section is less than the radial length of the end surface of one side of the second shielding body 2 away from the main shell in the CC section. The setting of the inclined surface further ensures radiation safety during transportation.

[0070] The bottom plate 31 is an annular plate, the inner hole diameter of the bottom plate 31 is greater than or equal to the diameter of the accommodating cavity, and the bottom plate 31 is connected to the end surface of the fan plate 32 and the arc plate 39 away from the main shell. When the first shielding body 1 and the second shielding body 2 are against each other, Figure 3 As shown, the first shielding body 1 and the second shielding body 2 are against the sector plate 32 and the arc plate 39 , and the first shielding body 1 , the second shielding body 2 , the sector plate 32 , and the arc plate 39 are all filled with lead shielding material.

[0071] The shell 3 also includes a lifting ear pad 34 and a lifting ear 35. The lifting ear 35 is radially inserted into the main shell and then welded to the main shell. The lifting ear pad 34 is arranged between the lifting ear 35 and the main shell, thereby enhancing the connection strength between the main shell and the lifting ear 35.

[0072] like Figure 3As shown, the spent fuel transport device further includes a rotary hinge structure 7, and two rotary hinge structures 7 are provided, one rotary hinge structure 7 is used to connect the first shielding body 1 and the shell 3, and the other rotary hinge structure 7 is used to connect the second shielding body 2 and the shell 3. The rotary hinge structure 7 includes a bearing seat and a rotary shaft 77, the axis of the rotary shaft 77 and the axis of the accommodating cavity are arranged parallel, the bearing seat is connected to the shell 3, the rotary shaft 77 and the bearing seat are connected through a bearing, and the rotary shaft 77 is connected to the first shielding body 1 or the second shielding body 2.

[0073] like Figure 3 As shown, the first shielding body 1 is provided with a first arm 11, the first arm 11 and the first shielding body 1 are connected by a fastener, the first arm 11 is provided with a first arm hole 12, and when the rotating hinge structure 7 connects the first shielding body 1 and the shell 3, the rotating shaft 77 is connected to the first arm hole 12. The second shielding body 2 is provided with a second arm 21, the second arm 21 and the second shielding body 2 are connected by a fastener, the second arm 21 is provided with a second arm hole 22, and when the rotating hinge structure 7 connects the second shielding body 2 and the shell 3, the rotating shaft 77 and the second arm hole 22 are connected.

[0074] An anti-rotation groove is provided on the inner wall of the first arm hole 12, and an anti-rotation edge is provided on the rotating shaft 77. The anti-rotation edge cooperates with the anti-rotation groove to prevent the relative rotation between the rotating shaft 77 and the first arm 11. An anti-rotation groove is provided on the inner wall of the second arm hole 22, and an anti-rotation edge is provided on the rotating shaft 77. The anti-rotation edge cooperates with the anti-rotation groove to prevent the relative rotation between the rotating shaft 77 and the second arm 21.

[0075] Specifically, Fig. 9 As shown, the bearing seat includes a first bearing seat 71 and a second bearing seat 79, and the bearing includes a first thrust bearing 72, a first deep groove bearing 74, a second thrust bearing, and a second deep groove bearing. The first bearing seat 71 is connected to the outer shell 36, and the second bearing seat 79 is connected to the bottom plate 31. One end of the rotating shaft 77 is connected to the first bearing seat 71 through the first thrust bearing 72 and the first deep groove bearing 74, and a first bearing gasket 73 is arranged between the first thrust bearing 72 and the first deep groove bearing 74; the other end of the rotating shaft 77 is connected to the second bearing seat 79 through the second thrust bearing and the second deep groove bearing, and a second bearing gasket 78 is arranged between the second thrust bearing and the second deep groove bearing. The first bearing end cover 75 is installed on the first bearing seat 71 through the first bearing fastener 76, and the second bearing end cover 710 is installed on the second bearing seat 79 through the second bearing fastener. In this embodiment, two rotating hinge structures 7 are provided, one rotating hinge structure 7 is connected to the first shielding body 1, and the rotating shaft 77 is connected to the first arm hole 12 on the first arm 11; the other rotating hinge structure 7 is connected to the second shielding body 2, and the rotating shaft 77 is connected to the second arm hole 22 on the second arm 21, as shown in Figure 3.

[0076] like Figure 1 and Figure 3 As shown, the first shielding body 1 is provided with a first connecting ear 13, and the second shielding body 2 is provided with a second connecting ear 23; a connecting seat 310 is provided at the bottom of the sector plate 32, and the first connecting ear 13 and the second connecting ear 23 are detachably connected to the connecting seat 310 through the second fastener 9. Alternatively, the connecting seat 310 is provided with a through hole, the fastener is a screw, and the first connecting ear 13, the connecting seat 310, and the second connecting ear 23 are detachably connected through the screw.

[0077] like Figure 3 As shown, the first shielding body 1 and the second shielding body 2 of the lower cover structure are both provided with lever holes, the first shielding body 1 is provided with a first lever hole 14, and the second shielding body 2 is provided with a second lever hole 24. The axis of the lever hole is arranged in parallel with the axis of the accommodating cavity. The lower cover structure is rotated relative to the shell 3 by the lever and the lever hole to close or open the accommodating cavity. When the hanging basket 4 is loaded and unloaded through the second end of the accommodating cavity, the spent fuel transportation device needs to be placed vertically. At this time, the axis of the lever hole is in a vertical state. The second fastener 9 is removed, and a lever is inserted into the first lever hole 14 and the second lever hole 24 respectively. The lever is pushed to realize the separation of the first shielding body 1 and the second shielding body 2 and the opening of the accommodating cavity. After the first shielding body 1 and the second shielding body 2 are fully opened, the lever can be fixed by the positioning structure. On the contrary, the first shielding body 1 and the second shielding body 2 are closed to close the accommodating cavity.

[0078] like Figure 2 , Figure 4 and Fig.10 As shown, the hanging basket 4 includes a hanging basket shell 41, a positioning rib 42, and a main lifting ring 43; one end of the hanging basket shell 41 has an opening, and the spent fuel enters or exits the hanging basket shell 41 from the opening, and the main lifting ring 43 is arranged at the outer edge of the opening of the hanging basket shell 41, and the opening of the hanging basket shell 41 faces the upper cover structure 6, and the main lifting ring 43 is connected to the connecting piece 87; the positioning rib 42 is arranged on the outer wall of the hanging basket shell 41, and the positioning rib 42 and the inner wall of the accommodating cavity are gap-matched.

[0079] The positioning ribs 42 are arranged in at least two layers along the length extension direction of the hanging basket shell 41 , and each layer is provided with a plurality of positioning ribs 42 . The plurality of positioning ribs 42 in each layer are evenly arranged circumferentially along the axis of the hanging basket shell 41 .

[0080] By providing at least two layers of positioning ribs 42 , axial positioning and radial positioning of the hanging basket shell 41 in the accommodating cavity can be achieved.

[0081] Specifically, there is a certain distance between the opening of the hanging basket 4 and the upper cover shell 63 .

[0082] Specifically, Figure 4 As shown, two main lifting rings 43 are provided, the two main lifting rings 43 are arranged opposite to each other, and the steel wire rope is connected to the two main lifting rings 43 .

[0083] Specifically, Fig.10 As shown, the basket housing 41 is further provided with auxiliary lifting rings 44, which are arranged at both ends of the basket housing 41 opposite to the main lifting rings 43. The auxiliary lifting rings 44 facilitate the gripping of the manipulator during the loading process of the spent fuel.

[0084] In this embodiment, the size of the hanging basket shell 41 and the size of the positioning ribs 42 can be set according to needs. Under the premise that the size of the accommodating cavity remains unchanged, the accommodating cavity can accommodate hanging baskets 4 of various specifications, thereby realizing the temporary storage and transportation of spent fuel of a wide range of sizes, reducing the manufacturing and transportation costs of the device, and improving the utilization rate of the device.

[0085] As a specific implementation of this embodiment:

[0086] When the spent fuel is transported, the radial and axial dimensions of the hanging basket 4 are determined according to the size and mass of the spent fuel, and the loading and unloading method of the spent fuel in the device is determined - loading and unloading from the first end of the accommodating cavity or loading and unloading from the second end of the accommodating cavity.

[0087] The spent fuel enters from the first end (upper end) of the accommodating chamber. The spent fuel transport device is placed vertically, the upper cover structure 6 is disassembled, the first end of the accommodating chamber is opened, the hanging basket 4 in the accommodating chamber is lifted to the upper end surface of the shell 3 by the steel wire rope in the hoisting structure 8, the spent fuel is loaded into the hanging basket 4 by a crane, the hanging basket 4 is transported to the accommodating chamber by the steel wire rope of the hoisting structure 8, the upper cover structure 6 is installed, the first end (upper end) of the accommodating chamber is closed, and the spent fuel is transported.

[0088] The spent fuel is unloaded from the first end of the accommodating chamber. After being transported to the designated location, the upper cover structure 6 is disassembled, the first end (upper end) of the accommodating chamber is opened, the hanging basket 4 in the accommodating chamber is lifted to the upper end surface of the shell 3 by the steel wire rope in the hoisting structure 8, the spent fuel is unloaded from the hanging basket 4 by a crane, the hanging basket 4 is transported to the accommodating chamber by the steel wire rope of the hoisting structure 8, the upper cover structure 6 is installed, the first end (upper end) of the accommodating chamber is closed, and the transportation is completed.

[0089] The spent fuel enters from the second end (lower end) of the accommodating chamber. The spent fuel transport device is placed vertically, and the device is docked with the temporary hot chamber through the bottom plate 31. After the docking operation is completed, the first shielding body 1 and the second shielding body 2 are opened, and the second end (lower end) of the accommodating chamber is opened. The hanging basket 4 is transported to the inside of the hot chamber through the second end of the accommodating chamber by the steel wire rope of the hoisting structure 8. The spent fuel is loaded into the hanging basket 4 by the hot chamber manipulator. The hanging basket 4 is transported to the accommodating chamber through the second end of the accommodating chamber by the steel wire rope of the hoisting structure 8. The first shielding body 1 and the second shielding body 2 are closed, and the second end (lower end) of the accommodating chamber is closed, and the spent fuel is transported.

[0090] The spent fuel is unloaded from the second end (lower end) of the storage chamber. After being transported to the designated location, the device is docked with the temporary storage hot chamber through the bottom plate 31. After the docking operation is completed, the first shielding body 1 and the second shielding body 2 are opened, the second end (lower end) of the storage chamber is opened, and the hanging basket 4 is transported to the inside of the hot chamber through the second end of the storage chamber by the steel wire rope of the hoisting structure 8. The spent fuel is unloaded from the hanging basket 4 by the hot chamber manipulator, and the hanging basket 4 is transported to the storage chamber through the second end of the storage chamber by the steel wire rope of the hoisting structure 8. The first shielding body 1 and the second shielding body 2 are closed, and the second end (lower end) of the storage chamber is closed, and the transportation is completed.

[0091] In the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The term "plurality" refers to two or more than two, unless otherwise clearly defined.

[0092] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. The present invention is intended to cover any variations, uses or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art that are not disclosed by the present invention. The description and examples are to be considered exemplary only.

[0093] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A spent fuel transport device, characterized in that: include: A housing having a receiving cavity; A hanging basket, the hanging basket is arranged in the accommodating chamber, and the hanging basket is used to store spent fuel; An upper cover structure, the upper cover structure covers the first end of the accommodating cavity, the upper cover structure and the shell are detachably connected, and the upper cover structure is used to close or open the accommodating cavity; A hoisting structure, wherein the hoisting structure is arranged on the upper cover structure; The hoisting structure includes a connecting piece, which passes through the upper cover structure and is connected to the hanging basket. The hoisting structure is used to load and unload the hanging basket from the accommodating cavity.

2. A spent fuel transport device according to claim 1, characterized in that: The hoisting structure also includes a frame, a driving member and a reel; The connecting member is flexible and is wound around the reel; The frame is connected to the upper cover structure, the driving member is connected to the frame, the reel is rotatably connected to the frame, the driving shaft of the driving member is connected to the reel, and the driving member is used to drive the reel to drive the connecting member to extend or retract.

3. A spent fuel transport device according to claim 1, characterized in that: The upper cover structure comprises a threading hole, the threading hole and the axis of the accommodating cavity are coaxially arranged, and the connecting member passes through the threading hole.

4. A spent fuel transport device according to claim 1, characterized in that: The spent fuel transportation device also includes a lower cover structure; The lower cover structure covers the second end of the accommodating cavity, and the lower cover structure is rotatably connected to the shell.

5. A spent fuel transport device according to claim 4, characterized in that: The lower cover structure includes a first shielding body and a second shielding body; The first shielding body and the second shielding body are rotatably connected to the shell respectively; When the first shielding body and the second shielding body abut against each other, the first shielding body and the second shielding body seal the accommodating cavity; When the first shielding body and the second shielding body are separated, the first shielding body and the second shielding body open the accommodating cavity, and the hanging structure loads and unloads the hanging basket from the second end of the accommodating cavity.

6. A spent fuel transport device according to claim 5, characterized in that: The spent fuel transportation device further comprises a rotating hinge structure, wherein two rotating hinge structures are provided, one rotating hinge structure is used to connect the first shielding body and the shell, and the other rotating hinge structure is used to connect the second shielding body and the shell; The rotating hinge structure includes a bearing seat and a rotating shaft; the axis of the rotating shaft and the axis of the accommodating cavity are arranged in parallel, the bearing seat is connected to the shell, the rotating shaft and the bearing seat are connected through a bearing, and the rotating shaft is connected to the first shielding body or the second shielding body.

7. A spent fuel transport device according to claim 5, characterized in that: The shell comprises a main shell, a bottom plate, a fan-shaped plate, and an arc-shaped plate; The accommodating cavity is located in the main housing, and the upper cover structure is arranged at the first end of the main housing; The sector plate and the arc plate are both arranged at the second end of the main housing, the sector plate is arranged at the first side of the accommodating cavity, the arc plate is arranged at the second side of the accommodating cavity, and the first side of the accommodating cavity and the second side of the accommodating cavity are arranged opposite to each other; The bottom plate is an annular plate, and the inner hole diameter on the bottom plate is greater than or equal to the diameter of the accommodating cavity. The bottom plate is respectively connected to the end faces of the fan-shaped plate and the arc-shaped plate on one side away from the main shell body. When the first shielding body and the second shielding body are abutted against each other, the first shielding body and the second shielding body are abutted against the fan-shaped plate and the arc-shaped plate.

8. A spent fuel transport device according to claim 5, characterized in that: The first shielding body is provided with a first connecting ear, and the second shielding body is provided with a second connecting ear; The first connecting ear and the second connecting ear are detachably connected via a fastener.

9. A spent fuel transport device according to claim 4, characterized in that: The lower cover structure is provided with a lever hole, and the axis of the lever hole is arranged parallel to the axis of the accommodating cavity; The lower cover structure is rotated relative to the shell through the lever and the lever hole to close or open the accommodating cavity.

10. A spent fuel transport device according to claim 1, characterized in that: The hanging basket comprises a hanging basket shell, positioning ribs and a main hanging ring; One end of the hanging basket shell has an opening, the spent fuel enters or exits the hanging basket shell from the opening, the main lifting ring is arranged at the outer edge of the opening of the hanging basket shell, the opening of the hanging basket shell faces the upper cover structure, and the main lifting ring is connected to the connecting piece; The positioning ribs are arranged on the outer wall of the hanging basket shell, and the positioning ribs and the inner wall of the accommodating cavity are clearance-matched.

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