An automated nuclear fuel assembly plugging device

Abstract

This invention relates to the field of nuclear fuel processing technology, specifically to an automated nuclear fuel assembly loading and plugging device. It includes a longitudinal moving mechanism, a transverse moving mechanism, a moving platform, a magazine base, a magazine assembly, a magazine pushing mechanism, a plugging mechanism, and a spring isolation mechanism. The transverse moving mechanism is slidably mounted on the longitudinal moving mechanism, and the moving platform is slidably mounted on the transverse moving mechanism. The magazine pushing mechanism is used to press the spring, zirconium block, and zirconium tube in the magazine groove into the cladding tube. The magazine assembly is used to fill the nuclear fuel assembly into the corresponding magazine groove. The plugging mechanism is used to press the upper and lower plugs in the magazine groove into the cladding tube. The spring isolation mechanism is used to isolate two adjacent springs in the magazine groove. The purpose of this automated nuclear fuel assembly loading and plugging device is to solve the problems affecting the quality of loading and plugging due to high labor intensity, manual errors and omissions, and difficulty in controlling the manual installation force and speed during the loading process.

Description

Technical Field

[0001] This invention relates to the field of nuclear fuel processing technology, and more specifically to an automatic tube loading and plugging device for nuclear fuel assemblies. Background Technology

[0002] Nuclear power, as a low-carbon energy source, is an important component of clean energy, and nuclear fuel assemblies are the core components of nuclear power reactor cores. These fuel assemblies consist of cladding tubes, upper plugs, lower plugs, springs, zirconium blocks, and zirconium tubes. In practical applications, the springs, zirconium blocks, and zirconium tubes must be arranged in a specific quantity, order, and length within the cladding tube, while the upper and lower plugs are pressed and welded together at both ends of the cladding tube.

[0003] Nuclear fuel assemblies have small through-hole diameters and long lengths, making their manufacturing process complex, with high safety and reliability requirements and large production volumes. Therefore, the loading and plugging of nuclear fuel assemblies is a critical process, and the sophistication and reliability of the loading directly affect the reliability of the nuclear fuel assembly itself.

[0004] Currently, the loading and plugging of nuclear fuel assemblies are carried out manually or using semi-automatic plugging devices. Loading involves operators using a dedicated pusher handle to push springs, zirconium blocks, zirconium tubes, etc., into the cladding tube in a specific quantity, sequence, and arrangement. Pluging involves operators manually inserting the upper and lower plugs into the plugging fixture and then plugging the assembly. Both loading and plugging operations are labor-intensive, and this repetitive work easily leads to operator fatigue. The loading process requires careful operation and constant concentration from personnel; otherwise, product quality will be affected. Throughout the loading process, variations in operator force and pushing speed can damage the empty fuel rod tubes, impacting the loading quality.

[0005] Therefore, the inventors have provided an automatic tube loading and plugging device for nuclear fuel assemblies. Summary of the Invention

[0006] (1) Technical problems to be solved

[0007] This invention provides an automatic nuclear fuel assembly loading and plugging device, which solves the technical problems affecting the quality of loading and plugging due to high labor intensity, manual errors and omissions, and difficulty in controlling the manual installation force and speed during the loading process.

[0008] (2) Technical solution

[0009] This invention provides an automatic nuclear fuel assembly plugging device, comprising a longitudinal moving mechanism, a transverse moving mechanism, a moving platform, a magazine base, a magazine assembly, a magazine pushing mechanism, a plugging mechanism, and a spring isolation mechanism. The transverse moving mechanism is slidably mounted on the longitudinal moving mechanism, the moving platform is slidably mounted on the transverse moving mechanism, the magazine base is mounted on the moving platform, the magazine pushing mechanism is mounted on the moving platform and is used to press the spring, zirconium block, and zirconium tube in the magazine groove of the magazine base into the cladding tube, the magazine assembly is mounted on the magazine base and is used to fill the upper plug, lower plug, spring, zirconium block, and zirconium tube into the corresponding magazine groove on the magazine base, the plugging mechanism is used to press the upper plug and lower plug in the magazine groove of the magazine base into the cladding tube, and the spring isolation mechanism is mounted on the moving platform and is used to isolate two adjacent springs in the magazine groove of the magazine base.

[0010] Furthermore, the longitudinal moving mechanism includes a longitudinal base, a longitudinal servo motor, a longitudinal lead screw, a longitudinal lead screw bracket, a longitudinal dead stop, and a grating ruler; the longitudinal lead screw bracket is mounted on the longitudinal base, the longitudinal lead screw is mounted on the longitudinal lead screw bracket, the longitudinal servo motor is mounted on the longitudinal lead screw bracket and is used to drive the longitudinal lead screw to rotate, the grating ruler is mounted on the longitudinal base, and the longitudinal dead stops for limiting the transverse moving mechanism are provided at both longitudinal ends of the longitudinal base.

[0011] Furthermore, the lateral movement mechanism includes a lateral base, a lateral servo motor, a lateral lead screw, a lateral lead screw bracket, and a lateral dead stop; the lateral lead screw bracket is mounted on the lateral base, the lateral lead screw is mounted on the lateral lead screw bracket, the lateral servo motor is mounted on the lateral lead screw bracket and is used to drive the lateral lead screw to rotate, and the lateral dead stops for limiting the movement platform are provided at both lateral ends of the lateral base.

[0012] Furthermore, the magazine base includes a magazine base bracket, a magazine base, an optical fiber detection switch, and a proximity detection switch; the magazine base bracket is mounted on the mobile platform, the magazine base is mounted on the magazine base bracket, optical fiber switches with detection zirconium blocks and lower end plugs are installed on both sides of the magazine base, and the proximity switch with detection zirconium tube, spring, and upper end plug is installed on the lower end face of the magazine base.

[0013] The magazine base is provided with an upper end cartridge slot, a lower end cartridge slot, a zirconium tube cartridge slot, a zirconium block cartridge slot, and a spring cartridge slot.

[0014] Furthermore, the magazine base also includes an elastic positioning pin, and the magazine base is provided with a positioning pin hole, the elastic positioning pin being fixed to the side of the positioning pin hole.

[0015] Furthermore, the magazine assembly includes a magazine body, a magazine cover plate, a magazine elastic self-locking pin, and a magazine positioning pin; the magazine cover plate is fixed to the magazine body and is used to close the magazine slot; the magazine positioning pin is installed on the lower end face of the magazine body and is used to insert into the positioning pin hole on the magazine base, and is locked by the elastic positioning pin; the magazine body is provided with an upper end magazine slot, a lower end magazine slot, a zirconium tube magazine slot, a zirconium block magazine slot, and a spring magazine slot.

[0016] Furthermore, the magazine assembly also includes a magazine elastic self-locking pin, and each magazine slot is provided with a corresponding magazine elastic self-locking pin.

[0017] Furthermore, the magazine pushing mechanism includes a pushing cylinder and a push rod. The pushing cylinder is mounted on the magazine base bracket. One end of the push rod is fixed to the pushing cylinder, and the other end is inserted into the magazine slot hole of the magazine base. The zirconium tube slot, the zirconium block slot, and the spring slot are all provided with corresponding magazine pushing mechanisms.

[0018] Further, the plug-pressing mechanism includes a plug-pressing base, a plug-pressing cylinder bracket, a plug-pressing cylinder, a pressure switch, a plug-pressing push rod, a push rod support, a return-reset cylinder, and a reset block. The plug-pressing cylinder bracket is fixed on the plug-pressing base, the plug-pressing cylinder is fixed on the plug-pressing cylinder bracket, and the pressure switch is fixed on the shaft end of the plug-pressing cylinder and is used to detect the pressure when the plug is pressed in. The push rod support is fixed on the moving platform, and two parallel plug-pressing push rods pass through the push rod support and move axially. The return-reset cylinder is installed on the upper end face of the push rod support, and the reset block is installed on the shaft end of the return-reset cylinder. When the plug-pressing cylinder pushes the plug-pressing push rod to press the upper and lower plugs into the casing tube, the return-reset cylinder pushes the reset block to return the plug-pressing push rod to its original position.

[0019] Furthermore, the spring isolation mechanism includes a cylinder bracket, a guide cylinder, and a partition. The cylinder bracket is fixed on the moving platform, the guide cylinder is mounted on the cylinder bracket, and the partition is connected to the output shaft of the guide cylinder and is used to isolate the two springs when the guide cylinder extends.

[0020] (3) Beneficial effects

[0021] In summary, this invention, through the magazine base, magazine pushing mechanism, and plugging mechanism, combined with the precise movement of the moving platform, achieves automatic tube loading and plugging of the upper plug, lower plug, spring, zirconium block, and zirconium tube, etc. The spring isolation mechanism ensures that the spring can be smoothly pushed into the casing tube, thus realizing fully automatic installation. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of an automatic nuclear fuel assembly plugging device provided in an embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of the longitudinal moving mechanism in an automatic nuclear fuel assembly plugging device provided in an embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of the lateral movement mechanism in an automatic nuclear fuel assembly plugging device provided in an embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of the assembly structure of the magazine base and the magazine pushing mechanism in an automatic nuclear fuel assembly loading and plugging device provided in an embodiment of the present invention;

[0027] Figure 5 This is a schematic diagram of the clip base in an automatic nuclear fuel assembly plugging device provided in an embodiment of the present invention;

[0028] Figure 6 This is a schematic diagram of the clip assembly in an automatic nuclear fuel assembly plugging device provided in an embodiment of the present invention;

[0029] Figure 7 This is a partial structural diagram of the plugging mechanism in an automatic nuclear fuel assembly plugging device provided in an embodiment of the present invention;

[0030] Figure 8 This is a schematic diagram of the spring isolation mechanism in an automatic nuclear fuel assembly plugging device provided in an embodiment of the present invention;

[0031] Figure 9 yes Figure 8 A schematic diagram of the structure of the partition.

[0032] In the picture:

[0033] 1-Longitudinal moving mechanism; 101-Longitudinal base; 102-Longitudinal servo motor; 103-Longitudinal lead screw; 104-Longitudinal lead screw support; 105-Longitudinal dead stop; 106-Grating ruler; 2-Transverse moving mechanism; 201-Transverse base; 202-Transverse servo motor; 203-Transverse lead screw; 204-Transverse lead screw support; 205-Transverse dead stop; 3-Moving platform; 4-Clip magazine base; 401-Clip magazine base support; 402-Clip magazine base; 4021-Upper end cartridge slot; 4022-Lower end cartridge slot; 4023-Zirconium tube cartridge slot; 4024-Zirconium block cartridge slot; 4025-Spring cartridge slot; 403-Elastic positioning pin; 404-Fiber optic detection switch; 405-Proximity detection switch; 5-Clip magazine assembly; 501-Clip magazine body; 5011-Upper... 5012-Lower end plug groove; 5013-Zirconium tube groove; 5014-Zirconium block groove; 5015-Spring groove; 502-Magazine magazine cover; 503-Magazine magazine elastic self-locking pin; 504-Magazine magazine positioning pin; 6-Magazine magazine pushing mechanism; 601-Pushing cylinder; 602-Push rod; 7-Plug mechanism; 701-Plug base; 702-Plug cylinder bracket; 70 3-Plug cylinder; 704-Pressure switch; 705-Plug push rod; 706-Push rod support; 707-Return reset cylinder; 708-Reset stop block; 8-Spring isolation mechanism; 801-Cylinder bracket; 802-Guide cylinder; 803-Spacing plate; 100-Shell tube; 200-Upper plug; 300-Lower plug; 400-Zirconium tube; 500-Zirconium block; 600-Spring. Detailed Implementation

[0034] The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and examples. The following detailed description of the embodiments and the accompanying drawings are used to illustrate the principles of the present invention by way of example, but should not be used to limit the scope of the present invention. That is, the present invention is not limited to the described embodiments, and any modifications, substitutions and improvements to the parts, components and connection methods are covered without departing from the spirit of the present invention.

[0035] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0036] In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used to facilitate the description of this invention and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0037] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "install" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0038] Figure 1 This is a schematic diagram of an automatic nuclear fuel assembly plugging device provided in an embodiment of the present invention, as shown below. Figure 1 As shown, the device may include a longitudinal moving mechanism 1, a transverse moving mechanism 2, a moving platform 3, a magazine base 4, a magazine assembly 5, a magazine pushing mechanism 6, a pressing mechanism 7, and a spring isolation mechanism 8. The transverse moving mechanism 2 is slidably mounted on the longitudinal moving mechanism 1, the moving platform 3 is slidably mounted on the transverse moving mechanism 2, the magazine base 4 is mounted on the moving platform 3, the magazine pushing mechanism 6 is mounted on the moving platform 3 and is used to press the spring, zirconium block, and zirconium tube in the magazine groove of the magazine base 4 into the casing tube 100, the magazine assembly 5 is mounted on the magazine base 4 and is used to fill the upper plug, lower plug, spring, zirconium block, and zirconium tube into the corresponding magazine groove on the magazine base 4, the pressing mechanism 7 is used to press the upper plug and lower plug in the magazine groove of the magazine base 4 into the casing tube 100, and the spring isolation mechanism 8 is mounted on the moving platform 3 and is used to isolate two adjacent springs in the magazine groove of the magazine base 4.

[0039] In the above embodiment, the mobile platform 3 is mounted on the transverse moving mechanism 2 via a guide rail slider, and moves in two directions under the drive of the longitudinal moving mechanism 1 and the transverse moving mechanism 2.

[0040] As an optional implementation method, such as Figure 2 As shown, the longitudinal moving mechanism 1 includes a longitudinal base 101, a longitudinal servo motor 102, a longitudinal lead screw 103, a longitudinal lead screw support 104, a longitudinal dead stop 105, and a grating ruler 106. The longitudinal lead screw support 104 is mounted on the longitudinal base 101, the longitudinal lead screw 103 is mounted on the longitudinal lead screw support 104, the longitudinal servo motor 102 is mounted on the longitudinal lead screw support 104 and is used to drive the longitudinal lead screw 103 to rotate, and the grating ruler 106 is mounted on the longitudinal base 101. Both longitudinal ends of the longitudinal base 101 are provided with longitudinal dead stops 105 for limiting the transverse moving mechanism 2.

[0041] As an optional implementation method, such as Figure 3As shown, the lateral moving mechanism 2 includes a lateral base 201, a lateral servo motor 202, a lateral lead screw 203, a lateral lead screw support 204, and a lateral dead stop 205. The lateral lead screw support 204 is mounted on the lateral base 201, the lateral lead screw 203 is mounted on the lateral lead screw support 204, the lateral servo motor 202 is mounted on the lateral lead screw support 204 and is used to drive the lateral lead screw 203 to rotate, and the lateral dead stops 205 for limiting the movement platform 3 are provided at both ends of the lateral side of the lateral base 201.

[0042] As an optional implementation method, such as Figure 5 As shown, the magazine base 4 includes a magazine base bracket 401, a magazine base 402, an optical fiber detection switch 404, and a proximity detection switch 405. The magazine base bracket 401 is mounted on the mobile platform 3, and the magazine base 402 is mounted on the magazine base bracket 401. Optical fiber switches 404 for detecting zirconium blocks and lower plugs are installed on both sides of the magazine base 402, and a proximity switch 405 for detecting zirconium tubes, springs, and upper plugs is installed on the lower end face of the magazine base 402.

[0043] The magazine base 402 is provided with an upper end cartridge slot 4021, a lower end cartridge slot 4022, a zircon tube cartridge slot 4023, a zircon block cartridge slot 4024 and a spring cartridge slot 4025.

[0044] As an optional implementation method, such as Figure 5 As shown, the magazine base 4 also includes an elastic positioning pin 403. The magazine base 402 is provided with a positioning pin hole, and the elastic positioning pin 403 is fixed to the side of the positioning pin hole.

[0045] As an optional implementation method, such as Figure 6 As shown, the magazine assembly 5 includes a magazine body 501, a magazine cover plate 502, a magazine elastic self-locking pin 503, and a magazine positioning pin 504. The magazine cover plate 502 is fixed to the magazine body 501 and is used to close the magazine slots. The magazine positioning pin 504 is installed on the lower end face of the magazine body 501 and is used to insert into the positioning pin hole on the magazine base 402, and is locked by the elastic positioning pin 403. The magazine body 501 is provided with an upper plug magazine slot 5011, a lower plug magazine slot 5012, a zirconium tube magazine slot 5013, a zirconium block magazine slot 5014, and a spring magazine slot 5015. The number, size, shape, and position of the magazine slots are designed according to the requirements of the tube loading process, which facilitates the loading of the upper plug, lower plug, spring, zirconium block, and zirconium tube into the magazine slots and prevents misloading. At the same time, the lightweight design of the magazine body 501 facilitates installation.

[0046] As an optional implementation method, such as Figure 6As shown, the magazine assembly 5 also includes a magazine elastic self-locking pin 503, with a corresponding magazine elastic self-locking pin 503 in each magazine slot. The magazine elastic self-locking pin 503 facilitates the locking and fixing of each upper plug, lower plug, spring, zircon block, and zircon tube within their respective magazine slots. When the magazine elastic self-locking pin 503 extends, it locks the upper plug, lower plug, spring, zircon block, and zircon tube within their respective magazine slots. When the magazine elastic self-locking pin 503 retracts, the upper plug, lower plug, spring, zircon block, and zircon tube smoothly fall into the magazine slots of the magazine base 402, and then await pushes into the casing tube 100 by the magazine pusher structure 6.

[0047] As an optional implementation method, such as Figure 4 As shown, the magazine pushing mechanism 6 includes a pushing cylinder 601 and a push rod 602. The pushing cylinder 601 is mounted on the magazine base bracket 401. One end of the push rod 602 is fixed to the pushing cylinder 601, and the other end is inserted into the magazine slot hole of the magazine base 402. The zirconium tube slot 4023, the zirconium block slot 4024, and the spring slot 4025 are all equipped with corresponding magazine pushing mechanisms 6. Specifically, in coordination with the precise movement of the lateral movement mechanism 2 and the longitudinal movement mechanism 1, the pushing cylinder 601 pushes the push rod 602 sequentially into the casing tube 100 according to the tube loading sequence requirements.

[0048] As an optional implementation method, such as Figure 4 , 7 As shown, the plug-pressing mechanism 7 includes a plug-pressing base 701, a plug-pressing cylinder bracket 702, a plug-pressing cylinder 703, a pressure switch 704, a plug-pressing push rod 705, a push rod support 706, a return / reset cylinder 707, and a reset stop 708. The plug-pressing cylinder bracket 702 is fixed to the plug-pressing base 701, the plug-pressing cylinder 703 is fixed to the plug-pressing cylinder bracket 702, and the pressure switch 704 is fixed to the shaft end of the plug-pressing cylinder 703 and is used to detect the pressure when the plug is pressed in. The seat 706 is fixed on the mobile platform 3. Two parallel plunger push rods 705 pass through the push rod support 706 and move axially. The return reset cylinder 707 is installed on the upper end face of the push rod support 706, and the reset stop block 708 is installed on the shaft end of the return reset cylinder 707. When the plunger cylinder 703 pushes the plunger push rod 705 to press the upper and lower plugs into the casing tube 100, the return reset cylinder 707 pushes the reset stop block 708 to return the plunger push rod 705 to reset.

[0049] Specifically, because the upper and lower plugs are tightly fitted to the inner diameter of the casing tube 100, the pushing pressure is relatively high. The pressure switch 704 is fixed to the shaft end of the plug-pressing cylinder 703 to detect the pressure when the plug is pressed in, preventing insufficient pressure from failing to press it into place and excessive pressure from damaging the casing tube 100. The push rod support 706 is fixed on the moving platform 3, and the plug-pressing push rod 705 is supported on the push rod supports 706 at both ends by linear bearings, allowing it to move axially. In conjunction with the movement of the moving platform 3, the upper and lower plugs are pressed into the casing tube 100.

[0050] As an optional implementation method, such as Figure 8 , 9 As shown, the spring isolation mechanism 8 includes a cylinder bracket 801, a guide cylinder 802, and a partition 803. The cylinder bracket 801 is fixed on the moving platform 3, the guide cylinder 802 is mounted on the cylinder bracket 801, and the partition 803 is connected to the output shaft of the guide cylinder 802 and is used to isolate the two springs when the guide cylinder 802 extends.

[0051] Specifically, when the guide cylinder 802 returns, the spring can fall into the spring groove; when the guide cylinder 802 extends, the partition 803 is used to isolate the two springs to prevent them from getting stuck together when the spring is pushed axially. The front end of the partition 803 is machined with a bevel angle 8031, which makes it easy to insert the partition 803 between the two springs to play an isolation role.

[0052] It should be noted that the various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. The present invention is not limited to the specific steps and structures described above and shown in the figures. Furthermore, for the sake of brevity, detailed descriptions of known methods and techniques are omitted here.

[0053] The above are merely embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art without departing from the scope of the invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this application should be included within the scope of the claims of this application.

Claims

1. An automatic nuclear fuel assembly loading and plugging device, characterized in that, It includes a longitudinal moving mechanism (1), a lateral moving mechanism (2), a moving platform (3), a magazine base (4), a magazine assembly (5), a magazine pushing mechanism (6), a press mechanism (7), and a spring isolation mechanism (8). The lateral moving mechanism (2) is slidably mounted on the longitudinal moving mechanism (1), the moving platform (3) is slidably mounted on the lateral moving mechanism (2), the magazine base (4) is mounted on the moving platform (3), the magazine pushing mechanism (6) is mounted on the moving platform (3) and is used to press the spring, zirconium block and zirconium tube in the magazine base (4) into the casing tube (100), the magazine assembly (5) is mounted on the magazine base (4) and is used to fill the upper plug, lower plug, spring, zirconium block and zirconium tube into the corresponding magazine groove on the magazine base (4), the plug pressing mechanism (7) is used to press the upper plug and lower plug in the magazine groove of the magazine base (4) into the casing tube (100), and the spring isolation mechanism (8) is mounted on the moving platform (3) and is used to isolate two adjacent springs in the magazine groove of the magazine base (4).

2. The automatic nuclear fuel assembly loading and plugging device according to claim 1, characterized in that, The longitudinal moving mechanism (1) includes a longitudinal base (101), a longitudinal servo motor (102), a longitudinal lead screw (103), a longitudinal lead screw support (104), a longitudinal dead stop (105), and a grating ruler (106); the longitudinal lead screw support (104) is mounted on the longitudinal base (101), the longitudinal lead screw (103) is mounted on the longitudinal lead screw support (104), the longitudinal servo motor (102) is mounted on the longitudinal lead screw support (104) and is used to drive the longitudinal lead screw (103) to rotate, the grating ruler (106) is mounted on the longitudinal base (101), and the longitudinal dead stop (105) is provided at both ends of the longitudinal base (101) for limiting the transverse moving mechanism (2).

3. The automatic nuclear fuel assembly loading and plugging device according to claim 1, characterized in that, The lateral moving mechanism (2) includes a lateral base (201), a lateral servo motor (202), a lateral lead screw (203), a lateral lead screw bracket (204), and a lateral dead stop (205). The lateral lead screw bracket (204) is mounted on the lateral base (201), the lateral lead screw (203) is mounted on the lateral lead screw bracket (204), the lateral servo motor (202) is mounted on the lateral lead screw bracket (204) and is used to drive the lateral lead screw (203) to rotate, and the lateral dead stop (205) is provided at both ends of the lateral side of the lateral base (201) for limiting the movement platform (3).

4. The automatic nuclear fuel assembly loading and plugging device according to claim 1, characterized in that, The magazine base (4) includes a magazine base bracket (401), a magazine base (402), an optical fiber detection switch (404), and a proximity detection switch (405); the magazine base bracket (401) is mounted on the mobile platform (3), the magazine base (402) is mounted on the magazine base bracket (401), optical fiber detection switches (404) with detection zirconium blocks and lower end plugs are installed on both sides of the magazine base (402), and the proximity detection switch (405) with detection zirconium tube, spring, and upper end plug is installed on the lower end face of the magazine base (402). The magazine base (402) is provided with an upper end cartridge slot (4021), a lower end cartridge slot (4022), a zirconium tube cartridge slot (4023), a zirconium block cartridge slot (4024) and a spring cartridge slot (4025).

5. The automatic nuclear fuel assembly plugging device according to claim 4, characterized in that, The magazine base (4) also includes an elastic positioning pin (403). The magazine base (402) is provided with a positioning pin hole, and the elastic positioning pin (403) is fixed to the side of the positioning pin hole.

6. The automatic nuclear fuel assembly loading and plugging device according to claim 5, characterized in that, The magazine assembly (5) includes a magazine body (501), a magazine cover plate (502), a magazine elastic self-locking pin (503), and a magazine positioning pin (504); the magazine cover plate (502) is fixed on the magazine body (501) and is used to close the magazine slot; the magazine positioning pin (504) is installed on the lower end face of the magazine body (501) and is used to insert into the positioning pin hole on the magazine base (402), and is locked by the elastic positioning pin (403); The magazine body (501) is provided with an upper end plugging groove (5011), a lower end plugging groove (5012), a zircon tube groove (5013), a zircon block groove (5014) and a spring groove (5015).

7. The automatic nuclear fuel assembly loading and plugging device according to claim 6, characterized in that, The magazine assembly (5) also includes a magazine elastic self-locking pin (503), and each magazine slot is provided with a corresponding magazine elastic self-locking pin (503).

8. The automatic nuclear fuel assembly loading and plugging device according to claim 4, characterized in that, The magazine pushing mechanism (6) includes a pushing cylinder (601) and a push rod (602). The pushing cylinder (601) is mounted on the magazine base bracket (401). One end of the push rod (602) is fixed on the pushing cylinder (601), and the other end is inserted into the magazine slot hole of the magazine base (402). The zirconium tube groove (4023), zirconium block groove (4024) and spring groove (4025) on the magazine base (402) are each provided with a corresponding magazine pushing mechanism (6).

9. The automatic nuclear fuel assembly loading and plugging device according to claim 1, characterized in that, The plug-in mechanism (7) includes a plug-in base (701), a plug-in cylinder bracket (702), a plug-in cylinder (703), a pressure switch (704), a plug-in push rod (705), a push rod support (706), a return reset cylinder (707), and a reset stop (708); the plug-in cylinder bracket (702) is fixed on the plug-in base (701), the plug-in cylinder (703) is fixed on the plug-in cylinder bracket (702), and the pressure switch (704) is fixed on the shaft end of the plug-in cylinder (703) and is used to detect the pressure when the plug is pressed in; The push rod support (706) is fixed on the moving platform (3). Two parallel push rods (705) pass through the push rod support (706) and move axially. The return reset cylinder (707) is installed on the upper end face of the push rod support (706). The reset block (708) is installed on the shaft end of the return reset cylinder (707). When the push rod cylinder (703) pushes the push rod (705) to press the upper and lower plugs into the casing tube (100), the return reset cylinder (707) pushes the reset block (708) to return the push rod (705) to reset.

10. The automatic nuclear fuel assembly loading and plugging device according to claim 1, characterized in that, The spring isolation mechanism (8) includes a cylinder bracket (801), a guide cylinder (802), and a partition (803). The cylinder bracket (801) is fixed on the moving platform (3), the guide cylinder (802) is mounted on the cylinder bracket (801), and the partition (803) is connected to the output shaft of the guide cylinder (802) and is used to isolate the two springs when the guide cylinder (802) extends.

Images