Storage rack enabling separation of in-pile components

Abstract

The application provides a storage rack capable of separating in-core components, comprising a support column, one end of which is connected with the bottom of a refueling pool, and the other end extends towards the pool surface of the refueling pool; wherein the support column is used for supporting the core barrel and the core lower plate located in the basket cylinder when the basket cylinder slides along the support column in the axial direction, so as to shorten the distance between the core barrel and the core lower plate and the pool surface of the refueling pool. The storage rack capable of separating in-core components can use the fuel loading and unloading machine to lift the basket cylinder, the core barrel and the core lower plate together when refueling, and then lift them to the support column. The support column lifts the core barrel and the core lower plate at the top so that they will not fall. The basket cylinder falls due to gravity. Thus, the core barrel and the core lower plate are lifted, and the fuel rod can be easily grabbed by the fuel loading and unloading machine, thereby solving the difficulty of deep core refueling.

Description

Technical Field

[0001] This invention relates to the field of reactor operation and maintenance technology, and specifically to a storage rack that enables the separation of in-reactor components. Background Technology

[0002] With the increasing number of nuclear power projects under construction, and the fact that in-service reactors have multiple refueling cycles during their lifespan, reactor operation and maintenance work is gradually increasing, making the efficiency and safety requirements for refueling and maintenance work more stringent.

[0003] The common reactor refueling process requires opening the reactor pressure vessel top cover, using a lifting device to lift away the upper in-core components, and then using a refueling machine to grab and replace the fuel rods. The refueling machine has a long grabbing distance, which requires extremely high grabbing accuracy.

[0004] Currently, many new reactor types have emerged based on traditional pressurized water reactors, such as heating reactors that adopt a fully natural circulation and integrated design. These reactor types have a slender structure and, due to functional and layout requirements, have a larger core depth and longer loading and unloading machine stroke, which greatly increases the difficulty of loading and unloading processes and the design of loading and unloading machines. The distance between the fuel assembly markings and the water surface in some reactors is as high as 36 meters, and ordinary loading and unloading processes are far from meeting current needs.

[0005] Based on this, the inventors of this application propose a storage rack that enables the separation of internal components of the stack, in order to solve the above-mentioned technical problems. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art in deep core refueling difficulties, and to provide a storage rack that can realize the separation of in-core components.

[0007] The present invention solves the above-mentioned technical problems through the following technical solution:

[0008] This invention provides a storage rack that enables the separation of in-pile components, comprising:

[0009] The support column has one end connected to the bottom of the refueling tank, and the other end extends towards the surface of the refueling tank; among which,

[0010] The support column is used to support the core conduit and the lower core plate located inside the core conduit when the core conduit body slides along the axial direction of the support column, so as to shorten the distance from the core conduit and the lower core plate to the surface of the refueling water pool.

[0011] According to one embodiment of the present invention, at least one sliding mechanism is provided on the outer peripheral sidewall of the support column, the sliding mechanism being used to slide in contact with the inner peripheral wall of the basket cylinder sleeved on the outside of the support column.

[0012] According to one embodiment of the present invention, one of the sliding mechanisms is disposed at the top of the support column.

[0013] According to one embodiment of the present invention, the number of sliding mechanisms is at least two;

[0014] Wherein, at least one of the sliding mechanisms is located at the top of the support column, and at least one is located at the bottom of the support column.

[0015] According to one embodiment of the present invention, each of the sliding mechanisms includes at least two sliding units, which are evenly distributed around the circumference of the support column.

[0016] According to one embodiment of the present invention, each of the sliding units includes an embedded part, an adjusting pad, a bolt plate, a pulley mounting base plate, and a pulley assembly;

[0017] The embedded part is installed on the support column, the adjusting shim is installed on the embedded part, the bolt plate is installed on the adjusting shim, the pulley mounting base plate is installed on the bolt plate, and the pulley assembly is installed on the pulley mounting base plate.

[0018] According to one embodiment of the present invention, the adjusting pad is an elastic plate;

[0019] Alternatively, the adjustment pad may be formed by assembling at least two plates.

[0020] According to one embodiment of the present invention, the pulley block includes at least two wheels spaced apart, the at least two wheels being arranged at intervals along the axial direction of the support column.

[0021] According to one embodiment of the present invention, the feed exchange tank includes a tank wall, a waist support plate is provided on the tank wall, and the support column passes through the waist support plate;

[0022] The waist support plate is connected to the pool wall by at least two support plates.

[0023] According to one embodiment of the present invention, a guide hole is provided in the middle of the waist support plate, and the support column passes through the guide hole;

[0024] The top of the guide hole is rounded.

[0025] According to one embodiment of the present invention, the bottom of the support column is further provided with a limiting support mechanism, the limiting support mechanism including a pool bottom support plate and a positioning plate provided on the pool bottom support plate, the pool bottom support plate being installed on the bottom of the feed exchange pool through a threaded connector;

[0026] The pool bottom support plate is surrounded by a mating hole for the support column, the support column passes through the mating hole, and the positioning plate is used for positioning and mating with the bottom of the basket body.

[0027] According to one embodiment of the present invention, at least one clearance groove is provided on the circumferential circumference of the pool bottom support plate, and the clearance groove is arranged radially along the pool bottom support plate;

[0028] A receiving space is formed between the support column and the basket body, and one end of the clearance groove extends to communicate with the receiving space, so that the inspection robot can reach the clearance groove to inspect the core shroud and the core bottom plate.

[0029] According to one embodiment of the present invention, a guide block is provided at the top of the support column, the guide block is coaxially arranged with the support column and the diameter of the guide block is smaller than the diameter of the support column.

[0030] The positive and progressive effects of this invention are as follows:

[0031] This invention enables the separation of in-core components into a storage rack. During refueling, the loader can use a loading and unloading machine to lift the basket along with the core casing and the lower core plate, and then lift them to the support column. The top of the support column lifts the core casing and the lower core plate without them falling, while the basket falls due to gravity. This raises the core casing and the lower core plate, making it easier for the loading and unloading machine to grab the fuel rods, thus solving the difficulties of refueling deep cores. Attached Figure Description

[0032] The above and other features, properties and advantages of the present invention will become more apparent from the following description taken in conjunction with the accompanying drawings and embodiments, wherein:

[0033] Figure 1 This is a schematic diagram of the storage rack for separating in-core components according to the present invention, in the state where the core shroud is lifted and the basket body is hidden after the core shroud is lifted.

[0034] Figure 2 This is a schematic diagram showing the fit between the suspended platform body and the support column;

[0035] Figure 3 for Figure 1 Enlarged structural diagram at point A;

[0036] Figure 4 for Figure 1 Top view;

[0037] Figure 5 This is a cross-sectional view of the cradle body, the lower core plate, and the core confinement tube at an angle during the jacking process.

[0038] Figure 6This is a schematic diagram showing the installation between the support column and the refueling water tank of the present invention;

[0039] Figure 7 This is an enlarged structural diagram of the top of the support column of the present invention;

[0040] Figure 8 This is an isometric view of the waist support plate of the present invention;

[0041] Figure 9 This is a schematic diagram of the limiting support mechanism of the present invention;

[0042] Figure 10 This is a schematic diagram of the cooperation state between the support column and the limiting support mechanism of the present invention;

[0043] Figure 11 This is a schematic diagram of the bottom structure of the support column of the present invention.

[0044] 1. Support column; 11. Limiting support mechanism; 111. Pool bottom support plate; 112. Positioning plate; 113. Mating hole; 114. Clearance groove; 12. Accommodation space; 13. Guide block;

[0045] 2. Feed changing tank; 21. Tank wall; 22. Waist support plate; 221. Guide hole; 23. Support plate;

[0046] 3. Sliding mechanism; 31. Sliding unit; 311. Embedded part; 312. Adjusting shim; 313. Bolt plate; 314. Pulley mounting base plate; 315. Pulley block; 316. Wheel body;

[0047] 4. Suspended basket body;

[0048] 5. Core casing;

[0049] 6. Core bottom plate. Detailed Implementation

[0050] The present invention will be further described below with reference to specific embodiments and accompanying drawings. More details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention can obviously be implemented in many other ways different from those described herein. Those skilled in the art can make similar extensions and derivations based on actual application situations without departing from the spirit of the present invention. Therefore, the scope of protection of the present invention should not be limited by the content of this specific embodiment.

[0051] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0052] Please refer to Figures 1 to 3 This invention proposes a storage rack capable of separating in-core components, comprising a support column 1. One end of the support column 1 is connected to the bottom of the refueling water tank 2, and the other end extends towards the surface of the refueling water tank 2. The support column 1 is used to support the core confining cylinder 5 and the lower core plate 6 located within the lifting basket cylinder 4 when the lifting basket cylinder 4 slides along the axial direction of the support column 1, thereby shortening the distance between the core confining cylinder 5 and the lower core plate 6 and the surface of the refueling water tank 2.

[0053] It is understood that this application is applicable to deep-core reactor types, such as slender heating reactors with a fully natural circulation and integrated design. The purpose is to shorten the distance between the core conduit 5 and the core lower plate 6 and the surface of the refueling water pool 2 by lifting the core conduit 5 and the core lower plate 6, thereby solving the problem of insufficient gripping stroke of traditional loading and unloading machines.

[0054] Reference Figure 1 One end of the support column 1 can be connected to the bottom of the feed exchange tank 2 by welding, or it can be integrally formed. There is no limitation here. The other end extends towards the surface of the feed exchange tank 2 to form a longitudinal support structure. Figure 1 The refueling pool 2 is filled with water at least greater than the axial length of the support column 1. When the support column 1 supports the core confinement tube 5 and the lower core plate 6, the distance between the core confinement tube 5 and the lower core plate 6 and the surface of the pool will be greatly reduced, which makes it easier for the loading and unloading machine to grab the fuel rods and solves the difficulty of refueling deep cores.

[0055] Reference Figures 3 to 5 The fuel assemblies are placed inside the core confinement tube 5, and the core confinement tube 5 is connected to the core bottom plate 6 by threaded connectors or fasteners such as clips. The axial length of the basket body 4 is very long, and the core confinement tube 5 and the core bottom plate 6 are located at the bottom of the basket body 4.

[0056] The traditional refueling method involves grabbing and replacing fuel rods using a refueling machine. However, due to the high precision required for grabbing and the long distance between the top of the core conduit 5 and the bottom plate 6 and the water surface, the traditional refueling machine cannot meet the refueling requirements of deep core reactors.

[0057] Based on this, this application proposes a storage rack that lifts the core confinement cylinder 5 and the lower core plate 6 as a whole, together with the basket cylinder 4. The top of the basket cylinder 4 is relatively close to the top of the reactor core. The loading and unloading machine can lift the basket cylinder 4, the core confinement cylinder 5, and the lower core plate 6 together, and then move them to the support column 1 set in the refueling pool 2. The basket cylinder 4 is sleeved on the outside of the support column 1 and moves downward along the axis of the support column 1 under the guidance of the sliding mechanism 3 due to its gravity. At the same time, the top of the support column 1 supports the lower core plate 6 and the core confinement cylinder 5, keeping the lower core plate 6 and the core confinement cylinder 5 at the top of the support column 1. This shortens the distance between the lower core plate 6 and the core confinement cylinder 5 and the surface of the refueling pool 2, thereby facilitating the loading and unloading machine to grab the fuel rods and solving the problem of deep core refueling.

[0058] Reference Figure 5 and Figure 6 At least one sliding mechanism 3 is provided on the outer peripheral side wall of the support column 1. The sliding mechanism 3 is used to slide in contact with the inner peripheral wall of the basket cylinder 4 sleeved on the outside of the support column 1.

[0059] It should be noted that when the suspended basket body 4 slides along the axis of the support column 1, its inner wall slides in contact with the sliding mechanism 3, which can automatically calibrate the axis consistency between the suspended basket body 4 and the support column 1, and avoid rigid friction when the two slide relative to each other.

[0060] That is, the sliding mechanism 3 serves two purposes: firstly, it guides the operation of the suspended basket cylinder 4; secondly, it prevents the suspended basket cylinder 4 and the support column 1 from wearing each other during the sliding cooperation, thus avoiding damage to the structure of the suspended basket cylinder 4.

[0061] Please refer to Figure 6 and Figure 7 There are two sliding mechanisms 3, located at the top and bottom of the support column 1 respectively. The sliding mechanism 3 at the top is used to guide the basket body 4 to be smoothly installed, while the sliding mechanism 3 at the bottom can correct the axial deviation of the basket body 4 during its descent.

[0062] Please continue to refer to Figure 6 and Figure 7 Each sliding mechanism 3 includes at least two sliding units 31, which are evenly distributed around the support column 1 in a circumferential direction.

[0063] It should be noted that, Figure 6 Each sliding mechanism 3 includes 4 sliding units 31, which are evenly distributed around the support column 1 in a circumferential direction. Here, we will use 4 sliding units 31 as an example for explanation, but we will not limit the number of sliding units 31 that the sliding mechanism 3 may include.

[0064] It is known that when the suspended basket cylinder 4 descends and cooperates with the support column 1, in order to avoid the rigid impact between the top of the support column 1 and the suspended basket cylinder 4 and damage to the suspended basket cylinder 4 or the support column 1, a guide block 13 is provided on the top of the support column 1. The diameter of the guide block 13 is smaller than the diameter of the support column 1. The guide block 13 cooperates with at least one sliding unit 31 to guide the installation of the suspended basket cylinder 4, which is conducive to the smooth cooperation between the suspended basket cylinder 4 and the support column 1.

[0065] For example, when the axial direction of the suspended basket cylinder 4 is offset from the axial direction of the support column 1, the guide block 13 can correct the axial direction of the suspended basket cylinder 4, allowing it to move smoothly along the axial direction of the support column 1.

[0066] Preferably, the top of the guide block 13 is rounded.

[0067] That is, when the suspended platform cylinder 4 is engaged with the support column 1, the suspended platform cylinder 4 may be at an axial angle to the support column 1 during its downward movement. Therefore, the suspended platform cylinder 4 will use the guide block 13 and / or sliding unit 31 to adjust its axis to be consistent with the support column 1, thereby avoiding collisions or friction between the suspended platform cylinder 4 and the support column 1 due to misalignment of their axes. The rounded corners can prevent rigid friction between the guide block 13 and the inner wall of the suspended platform cylinder 4, thus protecting the suspended platform cylinder 4.

[0068] Please continue to refer to Figure 7 Each sliding unit 31 includes an embedded part 311, an adjusting pad 312, a bolt plate 313, a pulley mounting base plate 314, and a pulley assembly 315. The embedded part 311 is installed on the support column 1, the adjusting pad 312 is installed on the embedded part 311, the bolt plate 313 is installed on the adjusting pad 312, the pulley mounting base plate 314 is installed on the bolt plate 313, and the pulley assembly 315 is installed on the pulley mounting base plate 314.

[0069] Specifically, the embedded part 311 is used to improve the structural strength of the support column 1 in the area where the pulley block 315 is installed. The embedded part 311 can be an embedded plate, embedded steel bar, or other structures, which are not limited here.

[0070] The thickness of the adjusting shim 312 is adjustable. For example, the inner diameter of the suspended basket cylinder 4 can be measured in advance, and then an adjusting shim 312 of the corresponding thickness can be designed and installed.

[0071] Alternatively, the adjusting plate 312 can also be composed of at least two plates of uniform thickness. Depending on the required thickness, the corresponding number of plates can be installed to achieve the corresponding thickness, so as to adapt to the suspended basket cylinder 4 with different inner diameters.

[0072] Alternatively, the adjusting plate 312 can be an elastic plate, thus adapting to different inner diameters of the suspended basket cylinder 4, and can elastically adapt to the sliding unit 31 when the inner wall of the suspended basket cylinder 4 is in contact with it, avoiding rigid contact between the suspended basket cylinder 4 and the support column 1.

[0073] The adjusting shim 312 and the embedded part 311 can be connected by welding or by other means such as threaded connectors, which is not limited here.

[0074] A bolt plate 313 is provided on the outside of the adjusting shim 312, and a pulley mounting base plate 314 is provided on the outside of the bolt plate 313. The bolt plate 313 and the adjusting shim 312 can be connected by welding or threaded fasteners, which is not limited here.

[0075] It is known that the bolt plate 313 is made of a material with high structural strength, such as steel or metal alloy, which is not limited here.

[0076] The pulley block 315 is installed on the pulley mounting base plate 314 using a threaded connector. One end of the threaded connector passes through the pulley mounting base plate 314 and connects to the bolt plate 313, thereby connecting the bolt plate 313 and the pulley mounting base plate 314 and also installing the pulley block 315.

[0077] Alternatively, the bolt plate 313 and the pulley mounting base plate 314 can be connected by welding first, and then the pulley block 315 can be installed using threaded connectors.

[0078] Alternatively, after the pulley block 315 is installed onto the pulley mounting base plate 314, it can be connected to the bolt plate 313 using threaded connectors; this is not a limitation.

[0079] Specifically, the pulley block 315 includes at least two wheel bodies 316 spaced apart, and the at least two wheel bodies 316 are arranged at intervals along the axial direction of the support column 1.

[0080] This application uses the example of setting four sets of sliding units 31 around the circumference of the support column, with each sliding unit 31 having six wheels 316. The number of sliding units 31 and the number of wheels 316 in each sliding unit 31 are not limited here.

[0081] It can be seen that the wheel 316 is not set along the entire axis of the support column 1, which can avoid the risk of jamming during the guiding process due to the failure of some wheel 316 to rotate.

[0082] In one embodiment, the axial height of the core lower plate 6 is 220mm. Correspondingly, the diameter of the wheel 316 is 100mm and the distance between the two pulley shafts is 110mm. This ensures that at least two wheels 316 participate in the guidance at the same time during the guidance process, which improves the guidance accuracy and reduces the load on a single wheel 316.

[0083] In other words, the axial height of the core lower plate 6 is the length of the critical area that needs to be supported when the basket body 4 slides down. The diameter and axle spacing of the wheel body 316 must cover this height, thereby ensuring that at least two wheel bodies 316 simultaneously contact the inner wall of the basket body 4 at any position, avoiding the risk of tilting or jamming caused by single-point support.

[0084] Please continue to refer to Figure 7 The sliding unit 31 can be arranged at angles of 22.5°, 112.5°, 202.5°, or 292.5° to avoid interference between the sliding unit 31 and the inserts on the inner wall of the basket cylinder 4. The above angles are used as examples for the arrangement of the sliding unit 31, but no specific data is limited.

[0085] Reference Figure 1 and Figure 8 The feed exchange pool 2 is also provided with a pool wall 21 on one side, and a waist support plate 22 is provided on the pool wall 21. The support column 1 and the hanging basket cylinder 4 pass through the waist support plate 22. The waist support plate 22 is connected to the pool wall 21 by at least two support plates 23.

[0086] The pool wall 21 can be L-shaped. The waist support plate 22 is connected to the pool wall 21 through the support plate 23. The number of support plates 23 can be four, six, etc., and is not limited here.

[0087] One end of the support plate 23 can be detachably connected to the pool wall 21 via a threaded connector, thereby allowing the installation position and height of the support plate 23 to be adjusted as needed.

[0088] The waist support plate 22 is used to provide radial support for the basket body 4 to prevent it from tipping over under external loads.

[0089] Specifically, a guide hole 221 is provided in the middle of the waist support plate 22, and the support column 1 passes through the guide hole 221; the top of the guide hole 221 is rounded.

[0090] The size of the guide hole 221 corresponds to the outer diameter of the basket body 4. The top of the guide hole 221 is rounded to facilitate the smooth passage of the basket body 4 through the waist support plate 22.

[0091] Reference Figures 8 to 11The bottom of the support column 1 is also provided with a limiting support mechanism 11. The limiting support mechanism 11 includes a pool bottom support plate 111 and a positioning plate 112 provided on the pool bottom support plate 111. The pool bottom support plate 111 is installed on the bottom of the feed exchange water tank 2 through a threaded connector. The pool bottom support plate 111 has a mating hole 113 in the middle that mates with the support column 1. The support column 1 passes through the mating hole 113. The positioning plate 112 is used to position and mate with the positioning component (not shown) at the bottom of the basket body 4.

[0092] The limiting support mechanism 11 is used to position and support the bottom of the suspended basket cylinder 4, thereby improving the stability of the bottom of the suspended basket cylinder 4.

[0093] The positioning plate 112 is installed on the pool bottom support plate 111 by a threaded connector, or the positioning plate 112 is connected to the pool bottom support plate 111 by welding.

[0094] Furthermore, the top of the positioning plate 112 is provided with a positioning protrusion, and the bottom of the basket body 4 is provided with a slot (positioning element) that cooperates with the positioning protrusion, so that when the basket body 4 descends to the positioning plate 112, it is limited by the positioning plate 112.

[0095] Furthermore, at least one clearance groove 114 is provided on the circumferential circumference of the pool bottom support plate 111, and the clearance groove 114 is provided radially along the pool bottom support plate 111; an accommodating space 12 is formed between the support column 1 and the basket cylinder 4, and one end of the clearance groove 114 extends to communicate with the accommodating space 12, so that the inspection robot can reach the clearance groove 114 to inspect the support status of the core conduit 5 and the core lower plate 6.

[0096] As can be seen, this application provides four clearance slots 114 evenly distributed around the circumference of the pool bottom support plate 111. The clearance slots 114 penetrate the pool bottom support plate 111. The arrangement of the clearance slots 114 facilitates the inspection robot to reach the bottom position of the gap between the support column 1 and the basket cylinder 4. Thus, the inspection robot can visually inspect the lower stack internal components from above, improving the efficiency of visual inspection.

[0097] Preferably, both the pool bottom support plate 111 and the positioning plate 112 are made of type II structural steel, which has higher strength than H-beam steel.

[0098] In summary, the storage rack provided in this application, which enables the separation of in-core components, allows the lower core plate 6 and the core confinement tube 5 to be lifted simultaneously under the action of the support column 1. The reactor core (fuel assembly) can move up and down as a whole inside the basket cylinder 4 along with the core confinement tube 5. By raising the lower core plate 6 and the core confinement tube 5, the fuel rods can be grabbed using a conventional loading and unloading machine, thus meeting the needs of deep core refueling.

[0099] The waist support plate 22 can provide radial support for the suspended basket cylinder 4, and thus can also provide support for the suspended basket cylinder 4 under severe working conditions such as earthquakes, so as to prevent the suspended basket cylinder 4 from tipping over under severe working conditions.

[0100] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical terms such as "installation", "connection", "joining", and "fixing" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can also refer to mechanical connections. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0101] This application uses specific terms to describe embodiments of the application. Terms such as "an embodiment," "one embodiment," and / or "some embodiments" refer to a particular feature, structure, or characteristic associated with at least one embodiment of the application. Therefore, it should be emphasized and noted that references to "an embodiment," "one embodiment," or "an alternative embodiment" in different locations throughout this specification do not necessarily refer to the same embodiment. Furthermore, certain features, structures, or characteristics in one or more embodiments of the application can be appropriately combined.

[0102] While the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the invention. Any variations and modifications can be made by those skilled in the art without departing from the spirit and scope of the invention. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention, without departing from the scope of the invention, fall within the protection scope defined by the claims of the present invention.

Claims

1. A storage rack capable of separating internal components of a stack, characterized in that, include: The support column has one end connected to the bottom of the refueling tank, and the other end extends towards the surface of the refueling tank; among which, The support column is used to support the core casing and the lower core plate located inside the basket when the basket body slides downward along the support column axis, so as to shorten the distance from the core casing and the lower core plate to the surface of the refueling water pool. The bottom of the support column is also provided with a limiting support mechanism, which includes a pool bottom support plate and a positioning plate provided on the pool bottom support plate. The pool bottom support plate is installed on the bottom of the feed exchange pool through a threaded connector. The pool bottom support plate is surrounded by mating holes that cooperate with the support column, the support column passes through the mating holes, and the positioning plate is used to position and cooperate with the bottom of the suspended basket body.

2. The storage rack capable of separating in-pile components according to claim 1, characterized in that, At least one sliding mechanism is provided on the outer peripheral sidewall of the support column, and the sliding mechanism is used to slide in contact with the inner peripheral wall of the basket cylinder sleeved on the outside of the support column.

3. The storage rack capable of separating in-pile components according to claim 2, characterized in that, One of the sliding mechanisms is located at the top of the support column.

4. The storage rack capable of separating in-pile components according to claim 3, characterized in that, The number of sliding mechanisms is at least two; Wherein, at least one of the sliding mechanisms is located at the top of the support column, and at least one is located at the bottom of the support column.

5. The storage rack capable of separating in-pile components according to claim 4, characterized in that, Each of the sliding mechanisms includes at least two sliding units, which are evenly distributed around the circumference of the support column.

6. The storage rack capable of separating in-pile components according to claim 5, characterized in that, Each of the aforementioned sliding units includes an embedded part, an adjusting pad, a bolt plate, a pulley mounting base plate, and a pulley assembly; The embedded part is installed on the support column, the adjusting shim is installed on the embedded part, the bolt plate is installed on the adjusting shim, the pulley mounting base plate is installed on the bolt plate, and the pulley assembly is installed on the pulley mounting base plate.

7. The storage rack capable of separating in-pile components according to claim 6, characterized in that, The adjusting pad is an elastic plate; Alternatively, the adjustment pad may be formed by assembling at least two plates.

8. The storage rack capable of separating in-pile components according to claim 6, characterized in that, The pulley system includes at least two wheels spaced apart, and the at least two wheels are arranged at intervals along the axial direction of the support column.

9. The storage rack capable of separating in-pile components according to claim 1, characterized in that, The refueling tank includes a tank wall, on which a waist support plate is provided, and the support column passes through the waist support plate; The waist support plate is connected to the pool wall by at least two support plates.

10. The storage rack for separating in-pile components according to claim 9, characterized in that, The waist support plate has a guide hole in the middle, and the support column passes through the guide hole; The top of the guide hole is rounded.

11. The storage rack capable of separating in-pile components according to claim 1, characterized in that, The pool bottom support plate is provided with at least one clearance groove in the circumferential direction, and the clearance groove is arranged in the radial direction of the pool bottom support plate. A receiving space is formed between the support column and the basket body, and one end of the clearance groove extends to communicate with the receiving space, so that the inspection robot can reach the clearance groove to inspect the core shroud and the core bottom plate.

12. The storage rack capable of separating in-pile components according to claim 1, characterized in that, The top of the support column is provided with a guide block, which is coaxially arranged with the support column and the diameter of the guide block is smaller than the diameter of the support column.

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