Detachable quick connection structure of nuclear fuel assembly

Abstract

The invention relates to the technical field of nuclear fuel assemblies, in particular to a nuclear fuel assembly detachable quick connecting structure which comprises a pipe base, a connecting piece, a connecting piece and a connecting piece. The connecting sleeve is connected into the connecting cavity in a working state; and the connecting assembly is arranged in the connecting sleeve and is used for connecting or disconnecting the connecting sleeve and the tube seat. When the pipe base and the connecting sleeve need to be installed, the connecting sleeve is inserted into the connecting cavity, and then the pipe base and the connecting sleeve are connected through the connecting assembly, so that the pipe base and the connecting sleeve are relatively fixed, and installation is completed; when the pipe base and the connecting sleeve need to be disassembled, the pipe base and the connecting sleeve are disconnected through the connecting assembly, then the pipe base is pulled out in the direction deviating from the connecting sleeve, the connecting sleeve is separated from the connecting cavity, disassembling is completed, and the whole disassembling and assembling process is simple, convenient and fast.

Description

Technical Field

[0001] The invention relates to the technical field of nuclear fuel assemblies, and in particular to a detachable quick connection structure of a nuclear fuel assembly. Background Art

[0002] A nuclear fuel assembly refers to a whole group of fuel elements assembled together, which consists of several fuel elements, tube seats, connecting sleeves, and positioning grids. Nuclear fuel assemblies should have a high output power and be as convenient to install and unload as possible. However, the disassembly and assembly between the tube seats and connecting sleeves of existing nuclear fuel assemblies is relatively complicated and the disassembly and assembly convenience is poor. Therefore, a quick detachable connector is urgently needed to improve the convenience of disassembly and assembly between the tube seats and the connecting sleeves. Summary of the invention

[0003] In view of the technical problem that the existing nuclear fuel assembly tube seat and connecting sleeve are not convenient for disassembly and assembly, the present invention provides a detachable quick connection structure of a nuclear fuel assembly, which can improve the convenience of disassembly and assembly between the tube seat and the connecting sleeve.

[0004] The present invention is achieved through the following technical solutions:

[0005] The present invention provides a detachable quick connection structure of a nuclear fuel assembly, comprising: a tube seat, on which a connection cavity is opened; a connecting sleeve, which is connected to the connection cavity in a working state; and a connecting component, which is arranged in the connecting sleeve and is used to connect or disconnect the connecting sleeve and the tube seat.

[0006] The invention provides a detachable quick connection structure for a nuclear fuel assembly, comprising a tube seat, a connecting sleeve and a connecting assembly. The tube seat is provided with a connecting cavity, and the connecting sleeve is connected to the connecting cavity in a working state. The connecting assembly is arranged in the connecting sleeve and is used to connect or disconnect the connecting sleeve and the tube seat.

[0007] In the present invention, a connection cavity is provided at the bottom of the tube seat, and the connection sleeve is connected to or disconnected from the tube seat through a connection assembly, thereby installing or disassembling the connection sleeve and the tube seat.

[0008] When it is necessary to install the pipe seat and the connecting sleeve, the connecting sleeve is inserted into the connecting cavity, and then the pipe seat and the connecting sleeve are connected through the connecting component to fix the pipe seat and the connecting sleeve relatively, and the installation is completed; when it is necessary to disassemble the pipe seat and the connecting sleeve, the pipe seat and the connecting sleeve are disconnected through the connecting component, and then the pipe seat is pulled out in the direction away from the connecting sleeve, so that the connecting sleeve is removed from the connecting cavity, and the disassembly is completed. The whole disassembly and assembly process is simple and convenient.

[0009] In an optional embodiment of the present application, the connecting assembly includes a movable part and an elastic part, the elastic part is connected between the movable part and the connecting sleeve, and the movable part is used to press the connecting sleeve tightly into the connecting cavity.

[0010] Therefore, when disassembling the pipe seat and the connecting sleeve, the movable part is pressed to release the tightness of the connecting sleeve, the elastic part is deformed, the pipe seat and the connecting sleeve are disconnected, and then the pipe seat is pulled out in the direction away from the connecting sleeve to complete the disassembly. When reassembling the pipe seat and the connecting sleeve, the connecting cavity of the pipe seat is sleeved on the connecting sleeve, and then the movable part is released, the elastic part recovers its deformation, and the movable part presses the connecting sleeve tightly into the connecting cavity, so that the pipe seat and the connecting sleeve are relatively fixed, and the reassembly is completed.

[0011] In an optional embodiment of the present application, a plurality of connecting plates are arranged at circumferential intervals on the top of the connecting sleeve, a protrusion is arranged on the outer wall of each connecting plate, a first groove is arranged on the inner wall of the connecting cavity, each of the protrusions cooperates with the first groove, and the movable part presses the protrusion into the first groove under the action of the elastic part.

[0012] In an optional embodiment of the present application, each of the connecting plates is respectively provided with protrusions on multiple planes parallel to the end face of the connecting sleeve, and a plurality of first grooves are provided on the inner side wall of the connecting cavity, and the plurality of protrusions on each of the connecting plates are matched with the plurality of first grooves in a one-to-one correspondence.

[0013] When installing the pipe seat, the pipe seat is put on the connecting sleeve, and the end of the connecting sleeve provided with the connecting piece is inserted into the connecting cavity until the protrusion is engaged with the first groove. When the elastic member is in a normal state, the movable member abuts against the surface of the connecting piece facing the inside of the connecting sleeve. At this time, the movable member presses the protrusion tightly into the first groove, thereby fixing the connecting sleeve and the pipe seat relatively.

[0014] In an optional embodiment of the present application, the movable part includes a first wedge and a second wedge, the first wedge and the second wedge are both cylindrical, the first wedge is sleeved on the second wedge, the outer diameter of the first wedge is equal to the inner diameter of the connecting sleeve; the first wedge has a first wedge surface inside, and the second wedge has a second wedge surface outside, the first wedge surface matches the second wedge surface; the elastic part is connected between the second wedge and the connecting sleeve.

[0015] In an optional embodiment of the present application, a second groove is provided on the inner top wall of the connecting cavity, and the top end of the connecting sleeve and the top end of the first wedge are jointly engaged in the second groove.

[0016] Therefore, when installing the pipe seat, the end of the connecting sleeve provided with the connecting piece is inserted into the connecting cavity until the protrusion is engaged with the first groove. When the elastic member is in a normal state, the first wedge surface fits with the second wedge surface, and the outer wall of the first wedge fits with the inner wall of the connecting piece. At this time, the protrusion is pressed tightly against the annular groove, so that the connecting sleeve and the pipe seat are relatively fixed. When disassembling the pipe seat and the connecting sleeve, by pressing the second wedge downward, the elastic member is deformed, the first wedge moves downward with the second wedge, and the first wedge releases the pressing force on the connecting piece. At this time, the pipe seat is moved upward relative to the connecting sleeve, the connecting piece is deformed inward, the protrusion is separated from the first groove, and the connecting sleeve is disconnected from the pipe seat until the connecting sleeve is removed from the connecting cavity, and the disassembly is completed.

[0017] In an optional embodiment of the present application, the top of the connecting piece is provided with a first extension portion extending toward the inside of the connecting sleeve, and the top of the first wedge is provided with a second extension portion, and the second extension portion presses the first extension portion against the second groove under the action of the elastic member. In the process of installing the pipe seat, the connecting sleeve extends into the connecting cavity until the top of the connecting piece is clamped in the second groove, and at the same time, the top of the first wedge is also clamped in the second groove under the action of the elastic member, and the second groove plays the role of positioning the connecting piece and the first wedge.

[0018] Among them, when the top end of the connecting piece is engaged with the second groove, the top end of the connecting piece and the first extension part are fitted to the inner bottom wall of the second groove, the second extension part is arranged along the circumference of the first wedge, and the second extension part is abutted against the first extension part under the action of the elastic part, and the first extension part is pressed tightly into the second groove, thereby preventing the connecting sleeve from moving along its own axial direction, and positioning the connecting sleeve.

[0019] In an optional embodiment of the present application, the second wedge piece is provided with a first card slot and a second card slot that are connected, the second card slot is farther away from the bottom of the second wedge piece than the first card slot, the extension directions of the first card slot and the second card slot are perpendicular to each other, and the extension direction of the first card slot is parallel to the central axis direction of the second wedge piece; a card block is provided on the inner wall of the connecting sleeve, and the card block can be selectively provided in the first card slot and the second card slot, the elastic piece is elastically deformed when the card block is located in the second card slot, and the elastic piece recovers its deformation when the card block is out of the second card slot.

[0020] It can be understood that when the block is located in the second slot, the second extension part releases the pressure on the first extension part, and the first wedge member releases the pressure on the connecting piece, so that the connecting piece can deform; when the block is located in the first slot, the second extension part presses the first extension part under the elastic force of the elastic member.

[0021] When the spring is in a normal state, the second extension part presses the first extension part into the second groove, the first wedge part presses the connecting piece, and the protrusion cooperates with the first groove; when the pipe seat needs to be removed, the second wedge part is pressed downward, and the blocking block moves in the first blocking groove. When the blocking block moves to the connection point of the first blocking groove and the second blocking groove, the second wedge part is rotated so that the blocking block is engaged with the second blocking groove. At this time, the elastic part is in a state of elastic deformation, and the first wedge part slides down and releases the pressing effect on the connecting piece. At this time, moving the pipe seat away from the connecting sleeve can separate the pipe seat from the connecting sleeve; when reinstalling the pipe seat, the pipe seat is sleeved onto the connecting sleeve; then the second wedge part is rotated in the opposite direction so that the blocking block is removed from the second blocking groove. At this time, the elastic part recovers its deformation, driving the first wedge part and the second wedge part to move upward, until the second extension part presses the first extension part into the second groove again, and the first wedge part presses the protrusion into the first groove, and the reinstallation is completed.

[0022] In an optional embodiment of the present application, a plurality of the clamping blocks are arranged along the circumference of the connecting sleeve, and a plurality of groups of the first clamping grooves and the second clamping grooves are arranged along the circumference of the second wedge piece, and the plurality of groups of the first clamping grooves and the second clamping grooves respectively cooperate with the plurality of the clamping blocks.

[0023] In an optional embodiment of the present application, the elastic member is a spring, a receiving portion is provided on the inner side wall of the connecting sleeve, and two ends of the spring are respectively connected to the receiving portion and the second wedge member.

[0024] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0025] The detachable quick connection structure of a nuclear fuel assembly provided by the present invention comprises a tube seat, a connecting sleeve and a connecting assembly. A connecting cavity is provided on the tube seat, and the connecting sleeve is connected in the connecting cavity in a working state. The connecting assembly is arranged in the connecting sleeve and is used to connect or disconnect the connecting sleeve from the tube seat. A connecting cavity is provided at the bottom of the tube seat, and the connecting sleeve is connected or disconnected from the tube seat through the connecting assembly, thereby installing or disassembling the connecting sleeve and the tube seat, and the whole disassembly process is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can also be obtained based on these drawings without creative work.

[0027] In the attached picture:

[0028] Figure 1An exploded view of a quick-detachable connector in an embodiment of the present application;

[0029] Figure 2 A cross-sectional view of a quick-detachable connector in an embodiment of the present application;

[0030] Figure 3 A cross-sectional view of a tube base in an embodiment of the present application;

[0031] Figure 4 This is a schematic diagram of the structure of the connecting sleeve in the embodiment of the present application;

[0032] Figure 5 This is a schematic diagram of the structure of the first wedge in the embodiment of the present application;

[0033] Figure 6 Schematic diagram of the structure of the second wedge in the embodiment of the present application.

[0034] Reference numerals and corresponding component names in the accompanying drawings:

[0035] 100-tube seat; 110-connecting cavity; 111-first groove; 112-second groove; 120-pipe hole; 200-connecting sleeve; 210-connecting plate; 211-protrusion; 212-first extension portion; 220-block; 230-receiving portion; 300-connecting assembly; 310-movable part; 311-first wedge; 3111-first wedge-shaped surface; 3112-second extension portion; 312-second wedge; 3121-second wedge-shaped surface; 3122-first slot; 3123-second slot; 320-elastic part. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0038] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. In the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other.

[0039] In the description of the embodiments of the present application, the indicated orientation or position relationship is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the product of the application is conventionally placed when in use, or is the orientation or position relationship conventionally understood by those skilled in the art. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0040] In the description of this application, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0041] Furthermore, the terms “first”, “second”, etc. are merely used for distinguishing descriptions and are not to be understood as indicating or implying relative importance.

[0042] It should be noted that the existing nuclear fuel assembly tube seat and connecting sleeve are relatively complicated to disassemble and assemble, and the disassembly and assembly convenience is poor. Therefore, a quick detachable connector is urgently needed to improve the convenience of disassembly and assembly between the tube seat and the connecting sleeve.

[0043] In order to solve the above-mentioned problems, the inventor innovatively designed the following technical solution, and the specific implementation solution of this application will be described in detail with reference to the accompanying drawings.

[0044] Example

[0045] Combination Figure 1 The present embodiment provides a detachable quick connection structure of a nuclear fuel assembly, including a tube seat 100, a connecting sleeve 200 and a connecting assembly 300. The tube seat 100 is provided with a connecting cavity 110, and the connecting sleeve 200 is connected to the connecting cavity 110 in a working state; the connecting assembly 300 is arranged in the connecting sleeve 200, and is used to connect or disconnect the connecting sleeve 200 with the tube seat 100.

[0046] It should be noted that a connection cavity 110 is provided at the bottom of the tube holder 100 , and the connection sleeve 200 is connected or disconnected with the tube holder 100 through the connection assembly 300 , thereby installing or disassembling the connection sleeve 200 and the tube holder 100 .

[0047] When it is necessary to install the tube seat 100 and the connecting sleeve 200, the connecting sleeve 200 is inserted into the connecting cavity 110, and then the tube seat 100 and the connecting sleeve 200 are connected through the connecting component 300 so that the tube seat 100 and the connecting sleeve 200 are relatively fixed, and the installation is completed; when it is necessary to disassemble the tube seat 100 and the connecting sleeve 200, the connection between the tube seat 100 and the connecting sleeve 200 is disconnected through the connecting component 300, and then the tube seat 100 is pulled out in the direction away from the connecting sleeve 200, so that the connecting sleeve 200 is removed from the connecting cavity 110, and the disassembly is completed. The entire disassembly and assembly process is simple and convenient.

[0048] Recombination Figure 1 In this embodiment, the connecting assembly 300 includes a movable member 310 and an elastic member 320. The elastic member 320 is connected between the movable member 310 and the connecting sleeve 200. The movable member 310 is used to press the connecting sleeve 200 tightly against the connecting cavity 110. It can be understood that the elastic member 320 is connected between the movable member 310 and the inner wall of the connecting sleeve 200.

[0049] When disassembling the tube socket 100 and the connecting sleeve 200, the movable member 310 is pressed to release the tightness of the movable member 310 against the connecting sleeve 200, and the elastic member 320 is deformed, so that the tube socket 100 and the connecting sleeve 200 are disconnected, and then the tube socket 100 is pulled out in a direction away from the connecting sleeve 200 to complete the disassembly. When reassembling the tube socket 100 and the connecting sleeve 200, the connecting cavity of the tube socket 100 is sleeved on the connecting sleeve 200, and then the movable member 310 is released, and the elastic member 320 recovers its deformation, so that the movable member 310 presses the connecting sleeve 200 against the connecting cavity 110, so that the tube socket 100 and the connecting sleeve 200 are relatively fixed, and the reassembly is completed.

[0050] Please combine Figure 4 A plurality of connecting plates 210 are arranged at intervals along the circumferential direction on the top of the connecting sleeve 200, a protrusion 211 is arranged on the outer wall of each connecting plate 210, a first groove 111 is arranged on the inner wall of the connecting cavity 110, each protrusion 211 cooperates with the first groove 111, and the movable part 310 presses the protrusion 211 tightly into the first groove 111 under the action of the elastic part 320.

[0051] It can be understood that the multiple connecting pieces 210 have a certain flexibility and can be deformed toward the inside or outside of the connecting sleeve 200 under the action of external force; the protrusions 211 on the same horizontal plane of the multiple connecting pieces 210 are arranged along the same circumference, and the cross-section on the vertical plane parallel to the central axis of the connecting sleeve 200 is semicircular. The first groove 111 is an annular groove, and the protrusion 211 is used to snap into the annular groove. When the movable part 310 abuts against the surface of the connecting piece 210 facing the inside of the connecting sleeve 200, the protrusion 211 can be pressed tightly into the annular groove.

[0052] When installing the tube seat 100, the tube seat 100 is put on the connecting sleeve 200, so that the end of the connecting sleeve 200 provided with the connecting piece 210 is inserted into the connecting cavity 110 until the protrusion 211 is engaged with the first groove 111. When the elastic member 320 is in a normal state, the movable member 310 abuts against the surface of the connecting piece 210 facing the inside of the connecting sleeve 200. At this time, the movable member 310 presses the protrusion 211 tightly against the first groove 111, thereby fixing the connecting sleeve 200 and the tube seat 100 relatively.

[0053] In this embodiment, each connecting piece 210 is respectively provided with protrusions 211 on multiple planes parallel to the end face of the connecting sleeve 200, and a plurality of first grooves 111 are provided on the inner wall of the connecting cavity 110. The plurality of protrusions 211 on each connecting piece 210 are matched with the plurality of first grooves 111 in a one-to-one correspondence.

[0054] It should be understood that the multiple first grooves 111 are arranged vertically, and the multiple protrusions 211 on each connecting piece 210 match the multiple first grooves 111 in a one-to-one correspondence, so that the connection between the connecting sleeve 200 and the pipe seat 100 is more stable.

[0055] For example, each connecting piece 210 is respectively provided with protrusions 211 on two planes parallel to the end face of the connecting sleeve 200, and two first grooves 111 are respectively provided on the inner wall of the connecting cavity 110. The protrusions 211 on the two planes are respectively matched with the two first grooves 111, so that the connecting sleeve 200 and the tube seat 100 are relatively fixed.

[0056] Combination Figure 5 and Figure 6The movable part 310 includes a first wedge 311 and a second wedge 312. The first wedge 311 and the second wedge 312 are both cylindrical. The first wedge 311 is sleeved on the second wedge 312. The outer diameter of the first wedge 311 is equal to the inner diameter of the connecting sleeve 200. The first wedge 311 has a first wedge surface 3111 inside, and the second wedge 312 has a second wedge surface 3121 outside. The first wedge surface 3111 matches the second wedge surface 3121. The elastic part 320 is connected between the second wedge 312 and the connecting sleeve 200.

[0057] It can be understood that the first wedge surface 3111 and the second wedge surface 3121 gradually decrease from bottom to top, the first wedge surface 3111 is arranged at a lower position inside the first wedge piece 311, and the second wedge surface 3121 is arranged at an upper position outside the second wedge piece 312, and the first wedge surface 3111 can fit with the second wedge surface 3121; the elastic member 320 is connected between the bottom of the second wedge piece 312 and the inner wall of the connecting sleeve 200.

[0058] When installing the pipe seat 100, insert one end of the connecting sleeve 200 provided with the connecting piece 210 into the connecting cavity 110 until the protrusion 211 is engaged with the first groove 111. When the elastic member 320 is in a normal state, the first wedge surface 3111 fits with the second wedge surface 3121, and the outer wall of the first wedge member 311 fits with the inner wall of the connecting piece 210. At this time, the protrusion 211 is pressed tightly against the annular groove, so that the connecting sleeve 200 and the pipe seat 100 are relatively fixed. When disassembling the tube seat 100 and the connecting sleeve 200, the second wedge 312 is pressed downward, the elastic member 320 is deformed, and the first wedge 311 moves downward with the second wedge 312. The first wedge 311 releases the tightness on the connecting piece 210. At this time, the tube seat 100 is moved upward relative to the connecting sleeve 200, the connecting piece 210 is deformed inward, the protrusion 211 is disengaged from the first groove 111, and the connecting sleeve 200 is disconnected from the tube seat 100 until the connecting sleeve 200 is removed from the connecting cavity 110, and the disassembly is completed.

[0059] On this basis, a second groove 112 is provided on the inner top wall of the connecting cavity 110 , and the top end of the connecting sleeve 200 and the top end of the first wedge 311 are jointly clamped in the second groove 112 .

[0060] It is known that a pipe hole 120 is provided in the pipe seat 100, and the connecting cavity 110 is connected to the pipe hole 120, and the cross-sectional area of ​​the connecting cavity 110 in the horizontal section is larger than the cross-sectional area of ​​the pipe hole 120. The second groove 112 is also an annular groove, and the top end of the connecting piece 210 and the top end of the first wedge 311 are jointly engaged in the second groove 112.

[0061] During the installation of the pipe seat 100, the connecting sleeve 200 extends into the connecting cavity 110 until the top of the connecting piece 210 is engaged in the second groove 112. At the same time, under the action of the elastic member 320, the top of the first wedge 311 is also engaged in the second groove 112. The second groove 112 has the effect of positioning the connecting piece 210 and the first wedge 311.

[0062] In addition, a first extension portion 212 extending toward the inside of the connecting sleeve 200 is provided at the top of the connecting piece 210 , and a second extension portion 3112 is protruding from the top of the first wedge member 311 . The second extension portion 3112 presses the first extension portion 212 tightly against the second groove 112 under the action of the elastic member 320 .

[0063] Specifically, when the top end of the connecting piece 210 is engaged with the second groove 112, the top end of the connecting piece 210 and the first extension portion 212 are fitted to the inner bottom wall of the second groove 112, and the second extension portion 3112 is arranged along the circumference of the first wedge piece 311. The second extension portion 3112 is abutted against the first extension portion 212 under the action of the elastic member 320, and the first extension portion 212 is pressed tightly into the second groove 112, thereby preventing the connecting sleeve 200 from moving along its own axial direction, and positioning the connecting sleeve 200.

[0064] In this embodiment, the second wedge piece 312 is provided with a first slot 3122 and a second slot 3123 that are connected. The second slot 3123 is farther away from the bottom of the second wedge piece 312 than the first slot 3122. The extension directions of the first slot 3122 and the second slot 3123 are perpendicular to each other, and the extension direction of the first slot 3122 is parallel to the central axis direction of the second wedge piece 312. A block 220 is provided on the inner wall of the connecting sleeve 200. The block 220 can be selectively provided in the first slot 3122 and the second slot 3123. The elastic member 320 undergoes elastic deformation when the block 220 is located in the second slot 3123, and the elastic member 320 recovers its deformation when the block 220 is out of the second slot 3123.

[0065] The first slot 3122 and the second slot 3123 form an L-shaped slot. During the movement of the second wedge piece 312, the block 220 moves between the first slot 3122 and the second slot 3123; when the block 220 is located in the second slot 3123, the second extension portion 3112 releases the pressure on the first extension portion 212, and the first wedge piece 311 releases the pressure on the connecting piece 210, so that the connecting piece 210 can be deformed; when the block 220 is located in the first slot 3122, the second extension portion 3112 presses the first extension portion 212 under the elastic force of the elastic member 320.

[0066] When the first and second latches 312 and 3123 are in the state of being connected, the second wedge piece 312 is rotated so that the latch block 220 is engaged with the second latch groove 3123, and the second wedge piece 312 is rotated so that the latch block 220 is engaged with the second latch groove 3123. At this time, the elastic member 320 is in a state of elastic deformation, and the first wedge piece 311 slides down and releases the connection. Due to the pressing effect of the connecting piece 210, the tube socket 100 can be separated from the connecting sleeve 200 by moving the tube socket 100 in the direction away from the connecting sleeve 200; when the tube socket 100 is reinstalled, the tube socket 100 is inserted into the connecting sleeve 200; then the second wedge 312 is rotated in the opposite direction to make the block 220 escape from the second slot 3123. At this time, the elastic member 320 restores its deformation, driving the first wedge 311 and the second wedge 312 to move upward until the second extension portion 3112 presses the first extension portion 212 into the second groove 112 again, and the first wedge 311 presses the protrusion 211 into the first groove 111, thereby completing the reinstallation.

[0067] Generally speaking, there are multiple blocks 220 arranged along the circumference of the connecting sleeve 200, and there are multiple groups of first slots 3122 and second slots 3123 arranged along the circumference of the second wedge 312, and the multiple groups of first slots 3122 and second slots 3123 respectively cooperate with the multiple blocks 220.

[0068] Correspondingly, each group of first card slots 3122 and second card slots 3123 corresponds to one card block 220 , and multiple groups of first card slots 3122 and second card slots 3123 cooperate with multiple card blocks 220 , respectively.

[0069] It can be confirmed that the elastic member 320 is a spring, a receiving portion 230 is provided on the inner wall of the connecting sleeve 200 , and two ends of the spring are respectively connected to the receiving portion 230 and the second wedge member 312 .

[0070] The receiving portion 230 is an annular receiving strip, which is arranged along the circumference of the connecting sleeve 200 , and the two ends of the spring are respectively abutted against or fixedly connected to the annular receiving strip and the bottom of the second wedge 312 .

[0071] In summary, the present embodiment provides a detachable quick connection structure for a nuclear fuel assembly. When the tube seat 100 and the connecting sleeve 200 need to be installed, the connecting sleeve 200 is inserted into the connecting cavity 110, and then the first wedge 311 and the second wedge 312 are pushed to move under the action of the spring until the first wedge 311 presses the connecting sleeve 200 tightly against the connecting cavity 110, so that the tube seat 100 and the connecting sleeve 200 are relatively fixed, and the installation is completed; when the tube seat 100 and the connecting sleeve 200 need to be disassembled, the second wedge 312 is pressed down to release the first wedge 311 from pressing against the connecting sheet 210. Then, the tube seat 100 is moved upward relative to the connecting sleeve 200 so that the connecting sleeve 200 is removed from the connecting cavity 110, and the disassembly is completed; when reassembling, the tube seat 100 is inserted into the connecting sleeve 200; then, the second wedge 312 is rotated in the opposite direction to make the block 220 remove from the second slot 3123, and the elastic member 320 restores its deformation and drives the first wedge 311 and the second wedge 312 to move upward until the second extension portion 3112 presses the first extension portion 212 into the second groove 112 again, and the first wedge 311 presses the protrusion 211 into the first groove 111, and the reassembly is completed. The entire disassembly and assembly process is simple and convenient.

[0072] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A detachable quick connection structure for a nuclear fuel assembly, characterized in that: include: A tube seat (100), wherein a connecting cavity (110) is provided on the tube seat (100); A connecting sleeve (200), wherein the connecting sleeve (200) is connected to the connecting cavity (110) in a working state; A connection component (300) is disposed in the connection sleeve (200) and is used to connect or disconnect the connection sleeve (200) and the pipe seat (100).

2. The detachable quick connection structure of nuclear fuel assembly according to claim 1, characterized in that: The connecting assembly (300) comprises a movable part (310) and an elastic part (320), wherein the elastic part (320) is connected between the movable part (310) and the connecting sleeve (200), and the movable part (310) is used to press the connecting sleeve (200) tightly against the connecting cavity (110).

3. The detachable quick connection structure of nuclear fuel assembly according to claim 2, characterized in that: A plurality of connecting plates (210) are arranged at intervals along the circumferential direction on the top of the connecting sleeve (200), a protrusion (211) is arranged on the outer wall of each connecting plate (210), a first groove (111) is arranged on the inner wall of the connecting cavity (110), each protrusion (211) cooperates with the first groove (111), and the movable member (310) presses the protrusion (211) tightly against the first groove (111) under the action of the elastic member (320).

4. The detachable quick connection structure of nuclear fuel assembly according to claim 3, characterized in that: Each of the connecting pieces (210) is provided with protrusions (211) on a plurality of planes parallel to the end face of the connecting sleeve (200), and a plurality of first grooves (111) are provided on the inner side wall of the connecting cavity (110), and the plurality of protrusions (211) on each of the connecting pieces (210) are matched with the plurality of first grooves (111) in a one-to-one correspondence.

5. The detachable quick connection structure of nuclear fuel assembly according to claim 3, characterized in that: The movable member (310) comprises a first wedge member (311) and a second wedge member (312), the first wedge member (311) and the second wedge member (312) are both cylindrical, the first wedge member (311) is sleeved on the second wedge member (312), and the outer diameter of the first wedge member (311) is equal to the inner diameter of the connecting sleeve (200); The first wedge piece (311) has a first wedge surface (3111) inside, and the second wedge piece (312) has a second wedge surface (3121) outside, and the first wedge surface (3111) matches the second wedge surface (3121); The elastic member (320) is connected between the second wedge member (312) and the connecting sleeve (200).

6. The detachable quick connection structure of nuclear fuel assembly according to claim 5, characterized in that: A second groove (112) is provided on the inner top wall of the connecting cavity (110), and the top end of the connecting sleeve (200) and the top end of the first wedge (311) are jointly clamped in the second groove (112).

7. The detachable quick connection structure of nuclear fuel assembly according to claim 6, characterized in that: The top end of the connecting piece (210) is provided with a first extension portion (212) extending toward the inside of the connecting sleeve (200), and the top end of the first wedge piece (311) is provided with a second extension portion (3112) protruding therefrom. Under the action of the elastic piece (320), the second extension portion (3112) presses the first extension portion (212) tightly against the second groove (112).

8. The detachable quick connection structure of nuclear fuel assembly according to claim 5, characterized in that: The second wedge piece (312) is provided with a first slot (3122) and a second slot (3123) which are connected to each other. The second slot (3123) is farther away from the bottom of the second wedge piece (312) than the first slot (3122). The extension directions of the first slot (3122) and the second slot (3123) are perpendicular to each other, and the extension direction of the first slot (3122) is parallel to the central axis direction of the second wedge piece (312). A clamping block (220) is provided on the inner wall of the connecting sleeve (200), and the clamping block (220) can be selectively arranged in the first clamping groove (3122) and the second clamping groove (3123). The elastic member (320) undergoes elastic deformation when the clamping block (220) is located in the second clamping groove (3123), and the elastic member (320) recovers its deformation when the clamping block (220) is out of the second clamping groove (3123).

9. The detachable quick connection structure of nuclear fuel assembly according to claim 8, characterized in that: A plurality of the clamping blocks (220) are arranged along the circumference of the connecting sleeve (200), and a plurality of groups of the first clamping grooves (3122) and the second clamping grooves (3123) are arranged along the circumference of the second wedge piece (312), and the plurality of groups of the first clamping grooves (3122) and the second clamping grooves (3123) respectively cooperate with the plurality of the clamping blocks (220).

10. The detachable quick connection structure of nuclear fuel assembly according to claim 5, characterized in that: The elastic member (320) is a spring, a receiving portion (230) is provided on the inner side wall of the connecting sleeve (200), and two ends of the spring are respectively connected to the receiving portion (230) and the second wedge member (312).

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