An integrated MOX component assembly and welding device

Abstract

The present invention provides an integrated MOX assembly welding device, comprising: a rod bundle assembly device, a spot welding device, an assembly conveying device, a flipping device, a joint assembly device and a welding device. The rod bundle assembly device pushes the rod bundle into the outer sleeve on the assembly conveying device, the spot welding device spot-welds the outer sleeve and the rod bundle therein to form an assembly, the assembly conveying device pushes the assembly formed by spot welding into the flipping device, the flipping device flips the assembly to a vertical state and is coaxially arranged with the transition joint, the joint assembly device drives the transition joint to rise until its upper end extends into the outer sleeve of the assembly, and the welding device welds the transition joint and the assembly into shape. The present invention can realize the automatic assembly, spot welding, conveying, flipping, automatic assembly and automatic welding of the lower transition joint of the MOX assembly, and solves the problem of high harm to personnel caused by strong radiation and high dose in the manufacturing process of MOX nuclear fuel assemblies.

Description

Technical Field

[0001] The invention relates to the technical field of radioactive nuclear fuel manufacturing, and in particular to an MOX component assembly and welding integrated device. Background Art

[0002] At present, the domestic MOX fuel element manufacturing technology is in its infancy, especially in the field of fast reactor MOX. The traditional pressurized water reactor fuel assembly production method cannot adapt to the MOX assembly structure and high-radioactivity and high-dose operation scenarios. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a MOX component assembly and welding integrated device in view of the above-mentioned deficiencies existing in the prior art, so as to realize the automation and unmanned MOX component assembly and welding, and reduce the radiation hazard to personnel.

[0004] The technical solution adopted to solve the technical problem of the present invention is:

[0005] The present invention provides an integrated MOX assembly welding device, comprising: a rod bundle assembly device, a spot welding device, an assembly conveying device, a turning device, a joint assembly device and a welding device.

[0006] The rod bundle assembly device, component conveying device and flipping device are arranged at intervals along the length direction of the rod bundle.

[0007] The rod bundle assembly device is used to support the fuel rod bundle and push the fuel rod bundle into the outer sleeve on the group 5 conveying device.

[0008] The spot welding device is arranged on one side of the rod bundle assembly device along the radial direction of the fuel rods, and is used to spot weld and fix the outer sleeve and the rod bundle therein to form an assembly.

[0009] The component conveying device is used to fix the outer sleeve and push the spot-welded components onto the flipping device.

[0010] The flipping device is used to fix the assembly and flip the assembly to a vertical state and to be coaxially arranged with the transition joint.

[0011] The joint assembly device is arranged below the flip device, and is used to fix the transition joint and drive the transition joint to rise until its upper end extends into the outer sleeve of the assembly.

[0012] The welding device is arranged on one side of the joint assembly device and is used to weld the transition joint and the assembly into shape.

[0013] Optionally, the rod bundle assembly device includes a rod bundle support mechanism and a rod bundle push-out mechanism, the rod bundle support mechanism is used to support the fuel rod bundle, the rod bundle push-out mechanism is slidably disposed on the rod bundle support mechanism and is connected to the fuel rod bundle, and can move relative to the rod bundle support mechanism along the axial direction of the fuel rod to push the fuel rod bundle into the outer sleeve on the conveying device.

[0014] Optionally, the rod bundle supporting mechanism includes a supporting seat and two groups of roller groups, the supporting seat is provided with a supporting station for supporting the fuel rod bundle, the two groups of roller groups are arranged on both sides of the supporting station along the radial direction of the fuel rod, each group of roller groups includes a plurality of rollers, and the plurality of rollers of each group of roller groups are arranged at intervals along the axial direction of the fuel rod, the rollers are arranged vertically and rotatably connected to the supporting seat, and are used to abut against corresponding sides of the fuel rod bundle.

[0015] Optionally, the rod bundle ejection mechanism comprises a rodless cylinder and a connecting assembly, the cylinder barrel of the rodless cylinder is fixed on the supporting seat, and the moving body thereof is connected to the fuel rod bundle via the connecting assembly.

[0016] Optionally, the rod bundle assembly device further comprises a shielding mechanism,

[0017] The shielding mechanism comprises a fixed shielding body and a movable shielding body,

[0018] The fixed shielding body is fixed on the support seat, and the movable shielding body has a through groove for the fuel rod bundle to pass through. The movable shielding body is slidably connected to the fixed shielding body and is detachably connected to the movable body of the rodless cylinder. It can move synchronously with the fixed shielding body and the fuel rods under the drive of the rodless cylinder.

[0019] Optionally, the movable shielding body is detachably connected to the movable body of the rodless cylinder via a driving clutch mechanism.

[0020] The driving clutch mechanism comprises a connecting piece, a guide rod and a guide cylinder. One end of the guide rod is fixedly connected to the support seat, and the other end extends into the guide cylinder. The guide cylinder is fixedly connected to the movable shielding body. The connecting piece is detachably connected between the movable body and the guide cylinder.

[0021] Optionally, the component conveying device includes a feeding bracket and an assembly tool.

[0022] The assembly tooling includes a roller mechanism and a clamping mechanism, the roller mechanism includes a roller group and a rotation drive mechanism, the roller group includes a plurality of rollers, the plurality of rollers are arranged at intervals along the axial direction of the fuel rod, the rollers are arranged horizontally and rotatably connected to the feeding bracket, and are used to support the outer sleeve, the rotation drive mechanism is arranged on the feeding bracket, and is connected to the plurality of rollers for driving the roller group to rotate, so as to drive the spot-welded components to move to the flip mechanism,

[0023] The clamping mechanism is movably connected to the feeding bracket and is used to fix the outer sleeve when the fuel rod bundle is pushed into the outer sleeve.

[0024] Optionally, the feeding bracket includes a fixed frame, a primary movable frame and a secondary movable frame, the primary movable frame is slidably mounted on the fixed frame, and can reciprocate relative to the fixed frame along the axial direction of the fuel rod, the secondary movable frame is slidably mounted on the primary movable frame, and can reciprocate relative to the primary movable frame along the axial direction of the fuel rod, and the assembly tooling is arranged on the secondary movable frame.

[0025] Optionally, the flipping device comprises a clamping mechanism, a flipping driving mechanism and a base, wherein the clamping mechanism is used to support and fix the component transferred from the component conveying device.

[0026] The flipping driving mechanism is arranged on the base and is transmission-connected with the clamping mechanism, and is used to drive the clamping mechanism to flip, so that the components on the clamping mechanism are in a vertical state and are coaxially arranged with the transition joint.

[0027] Optionally, the joint assembly device includes a positioning fixture and a lifting drive mechanism,

[0028] The positioning fixture is used to position and clamp the transition joint. The lifting drive mechanism is connected to the positioning fixture for driving the positioning fixture to lift and lower the transition joint so as to drive the transition joint to rise until its upper end extends into the outer sleeve of the component.

[0029] In the present invention, a new MOX component assembly and welding integrated device is designed, which includes: a rod bundle assembly device, a spot welding device, an assembly conveying device, a flipping device, a joint assembly device and a welding device. After the rod bundle assembly device pushes the fuel rod bundle into the outer sleeve on the assembly conveying device, the spot welding device spot welds the outer sleeve and the rod bundle therein to form an assembly. The assembly conveying device pushes the spot-welded assembly onto the flipping device. The flipping device flips the assembly to a vertical state and arranges it coaxially with the transition joint. The joint assembly device drives the transition joint to rise until its upper end extends into the outer sleeve of the assembly. The welding device welds the transition joint and the assembly into shape. Thereby, the automatic clamping and positioning, automatic assembly, automatic spot welding,

[0030] Automatic conveying, automatic flipping, automatic assembly of lower transition joints and automatic welding solve the problem of high hazards to personnel caused by strong radiation and high doses during the manufacturing process of MOX nuclear fuel assemblies. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A schematic diagram of the structure of the MOX component assembly and welding integrated device provided in Example 1 of the present invention;

[0032] Figure 2It is a schematic diagram of the three-dimensional structure of the rod bundle assembly device;

[0033] Figure 3 A schematic diagram of the three-dimensional structure of the rod bundle assembly device from another perspective;

[0034] Figure 4 It is a schematic diagram of the three-dimensional structure of the component conveying device;

[0035] Figure 5 It is a structural schematic diagram of a spot welding device;

[0036] Figure 6 It is a structural schematic diagram of a special welding tongs;

[0037] Figure 7 Schematic diagram of the structure of the component assembly device.

[0038] In the figure: 1-rod bundle assembly device, 11-rod bundle support mechanism, 111-roller, 112-roller bracket, 113-support seat, 12-rod bundle push-out mechanism, 121-rodless cylinder, 1211-cylinder barrel, 1212-moving body, 122-connecting plate, 123-force sensor, 124-locking mechanism, 13-shielding mechanism, 131-fixed shielding body, 132-moving shielding body, 133-guide rail pair, 134-driving clutch mechanism, 1341-connecting piece, 1342-guide rod, 1343-guide cylinder, 2-spot welding device, 21-robot, 22-special welding tongs, 221-servo Servo motor, 222-telescopic arm, 223-connecting rod mechanism, 224-welding pole, 3-component conveying device, 31-feeding bracket, 311-fixed frame, 312-first-level mobile frame, 313-second-level mobile frame, 32-clamping mechanism, 321-roller mechanism, 322-positioning mechanism, 323-conforming tooling, 324-clamping tooling, 4-component assembly device, 41-turning device, 411-base, 412-turning stand, 413-clamping mechanism, 414-turning drive mechanism, 42-joint assembly device, 421-positioning fixture, 422-lifting drive mechanism, 43-welding device. DETAILED DESCRIPTION

[0039] The following will be combined with the accompanying drawings in the present invention to clearly and completely describe the technical solutions in the invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of the present invention.

[0040] In the description of the present invention, it should be noted that the directions or positional relationships indicated by “upper” and the like are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience and simplification of the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0041] In the description of the present invention, the terms “first” and “second” are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0042] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connect", "set", "install", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection, or an integral 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 those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] The present invention provides an integrated MOX assembly welding device, comprising: a rod bundle assembly device, a spot welding device, an assembly conveying device, a turning device, a joint assembly device and a welding device.

[0044] The rod bundle assembly device, component conveying device and flipping device are arranged at intervals along the length direction of the rod bundle.

[0045] The rod bundle assembly device is used to support the fuel rod bundle and push the fuel rod bundle into the outer sleeve on the assembly conveying device.

[0046] The spot welding device is arranged on one side of the rod bundle assembly device along the radial direction of the fuel rods, and is used to spot weld and fix the outer sleeve and the rod bundle therein to form an assembly.

[0047] The component conveying device is used to fix the outer sleeve and push the spot-welded components onto the flipping device.

[0048] The flipping device is used to fix the assembly and flip the assembly to a vertical state and to be arranged coaxially with the transition joint.

[0049] The joint assembly device is arranged below the flip device, and is used to fix the transition joint and drive the transition joint to rise until its upper end extends into the outer sleeve of the assembly.

[0050] The welding device is arranged on one side of the joint assembly device and is used to weld the transition joint and the assembly into shape.

[0051] Embodiment 1:

[0052] like Figure 1As shown, this embodiment provides a MOX assembly welding integrated device, including: a rod bundle assembly device 1, a spot welding device 2, an assembly conveying device 3, a turning device 41, a joint assembly device 42 and a welding device 43.

[0053] The rod bundle assembly device 1, the assembly conveying device 3 and the turning device 41 are arranged at intervals along the length direction of the rod bundle.

[0054] The rod bundle assembly device 1 is used to support the fuel rod bundle and push the fuel rod bundle into the outer sleeve on the assembly conveying device 3.

[0055] The spot welding device 2 is arranged on one side of the rod bundle assembly device 1 along the radial direction of the fuel rods, and is used to spot weld and fix the outer sleeve and the rod bundle therein to form an assembly.

[0056] The component conveying device 3 is used to fix the outer sleeve and push the spot-welded components onto the turning device 41.

[0057] The flipping device 41 is used to fix the assembly and flip the assembly to a vertical state and to be arranged coaxially with the transition joint.

[0058] The joint assembly device 42 is arranged below the flip device 41, and is used to fix the transition joint and drive the transition joint to rise until its upper end extends into the outer sleeve of the assembly.

[0059] The welding device 43 is disposed on one side of the joint assembly device 42 and is used to weld the transition joint and the assembly into shape.

[0060] The present invention designs the above-mentioned brand-new MOX assembly welding integrated device. After the rod bundle assembly device 1 pushes the fuel rod bundle into the outer sleeve on the assembly conveying device 3, the spot welding device 2 spot welds and fixes the outer sleeve and the rod bundle therein to form an assembly. The assembly conveying device 3 pushes the assembly formed by spot welding onto the flipping device 41. The flipping device 41 flips the assembly to a vertical state and is coaxially arranged with the transition joint. The joint assembly device 42 drives the transition joint to rise until its upper end extends into the outer sleeve of the assembly. The welding device 43 welds the transition joint and the assembly. Thus, the automatic clamping and positioning, automatic assembly, automatic spot welding, automatic conveying, automatic flipping, automatic assembly and automatic welding of the lower transition joint of the MOX assembly rod bundle and the outer sleeve are realized, and the problem of high radiation and high dose to personnel in the manufacturing process of MOX nuclear fuel assemblies is solved.

[0061] like Figure 2As shown, in this embodiment, the rod bundle assembly device 1 includes a rod bundle supporting mechanism 11 and a rod bundle pushing mechanism 12. The rod bundle supporting mechanism 11 is used to support the fuel rod bundle. The rod bundle pushing mechanism 12 is slidably arranged on the rod bundle supporting mechanism 11 and is connected to the fuel rod bundle. It can move along the axial direction of the fuel rod relative to the rod bundle supporting mechanism 11 to push the fuel rod bundle into the outer sleeve on the conveying device 3.

[0062] like Figure 3 As shown, in this embodiment, the rod bundle support mechanism 11 includes a support seat 113 and two groups of roller groups. The support seat 113 is provided with a support station for supporting the fuel rod bundle. The two groups of roller groups are arranged on both sides of the support station along the radial direction of the fuel rod. Each group of roller groups includes a plurality of rollers 111. The plurality of rollers 111 of each group of roller groups are arranged at intervals along the axial direction of the fuel rod. The rollers 111 are arranged vertically and are rotatably connected to the support seat 113 through roller brackets 112. The circumferential surfaces thereof are used to abut against the corresponding side surfaces of the fuel rod bundle. The two groups of rollers are arranged in a staggered manner to form a contoured support for the regular hexagonal cross section of the fuel rod bundle, so as to limit the position of the fuel rod bundle. At the same time, the movement of the rod bundle can be realized with the help of the rollers 111.

[0063] In this embodiment, the rod bundle pushing mechanism 12 includes a rodless cylinder 121 and a connecting assembly, wherein a cylinder barrel 1211 of the rodless cylinder 121 is fixed on the supporting seat 113, and a moving body 1212 thereof is connected to the fuel rod bundle via the connecting assembly. The rodless cylinder 121 drives the fuel rod bundle to move on the supporting station of the rod bundle supporting mechanism 1, so as to push the fuel rod bundle into the outer sleeve.

[0064] Specifically, the connection assembly includes a connection plate 122, a force sensor 123 and a locking mechanism 124. The connection plate 122 is provided on the mobile body 1212, and one end of the connection plate 122 extends toward the support station to correspond to the support station, and is connected to one end of the force sensor 123, and the other end of the force sensor 123 is connected to the locking mechanism 124, and the locking mechanism 124 is used to fix the grid frame at the end of the fuel rod bundle.

[0065] In this embodiment, the rod cluster assembly device 1 further includes a shielding mechanism 13 for realizing mobile shielding protection of the rod cluster during the pushing process of the rod cluster.

[0066] The shielding mechanism 13 includes a fixed shielding body 131 and a movable shielding body 132.

[0067] The fixed shielding body 131 is fixed on the support seat 113, and the movable shielding body 132 has a through groove for the fuel rod bundle to pass through. The movable shielding body 132 is slidingly connected to the fixed shielding body 131 through a guide pair 133, and is detachably connected to the movable body of the rodless cylinder 121. It can move synchronously with the fuel rod relative to the fixed shielding body 131 under the drive of the rodless cylinder 121.

[0068] In this embodiment, the movable shielding body 132 is detachably connected to the movable body of the rodless cylinder 121 via the driving clutch mechanism 134.

[0069] The driving clutch mechanism 134 includes a connecting member 1341, a guide rod 1342 and a guide cylinder 1343. One end of the guide rod 1342 is fixedly connected to the support seat 113, and the other end extends into the guide cylinder 1343. The guide cylinder 1343 is fixedly connected to the movable shielding body 132. The connecting member 1341 is detachably connected between the movable body and the guide cylinder 1343.

[0070] The mobile shielding body 132 is connected to the rodless cylinder 121 in the rod bundle pushing mechanism 12 by means of the driving clutch mechanism 134, so as to realize linkage with the fuel rod bundle, thereby realizing synchronous movement protection of the fuel rod bundle.

[0071] like Figure 5 and Figure 6 As shown, the spot welding device 2 is used to complete the spot welding fixation of the grid frame and the outer sleeve of the fuel rod bundle, which includes a robot 21 and a special welding clamp 22. The special welding clamp 22 is installed at the end of the robot 21 to achieve precise point welding operation. The special welding clamp 22 is provided with a servo motor 221, a telescopic arm 222, a connecting rod mechanism 223 and a welding pole 224. The two welding poles 224 are opened and closed by the servo motor 221 driving the telescopic arm 222 to drive the connecting rod mechanism 223 to meet the pressure requirements during welding.

[0072] like Figure 4 As shown, in this embodiment, the assembly conveying device 3 is used to fix the outer sleeve during the assembly process of the fuel rod bundle and the outer sleeve and to convey the assembled assembly to the welding station, and includes a feeding bracket 31 and an assembly tool 32.

[0073] The assembly tool 32 includes a roller mechanism 321 and a clamping mechanism 32. The roller mechanism 321 includes a roller group and a rotation drive mechanism. The roller group includes a plurality of rollers, which are arranged at intervals along the axial direction of the fuel rod. The rollers are arranged horizontally and rotatably connected to the feeding bracket 31, which is used to support the outer sleeve. The rotation drive mechanism is arranged on the feeding bracket 31 and is connected to the plurality of rollers for driving the roller group to rotate, so as to drive the spot-welded components to move to the flip mechanism.

[0074] The clamping mechanism 32 is movably connected to the feeding bracket 31 and is used to fix the outer sleeve when the fuel rod bundle is pushed into the outer sleeve.

[0075] Specifically, the clamping mechanism 32 includes a profiling tool 323 and a clamping tool 324. The profiling tool 323 is fixed on the feeding bracket 31 and has a profiling groove that cooperates with the lower part of the outer sleeve, which is used to support the outer sleeve and limit the outer sleeve circumferentially. The clamping tool 324 is rotatably connected to the profiling tool 323 and can rotate relative to the profiling tool 323. The profiling tool and the clamping tool cooperate to form a regular hexagonal clamping section to achieve the clamping and fixing of the outer sleeve.

[0076] The assembly conveying device 3 also includes a positioning mechanism 322. The clamping mechanism 32 and the positioning mechanism 322 jointly realize the support, positioning and clamping of the assembly to ensure the accuracy and consistency of spot welding. The positioning mechanism 322 is arranged on the feeding bracket 31, and is arranged on the side of the outer sleeve axial direction away from the fuel rod bundle. It is used to abut against the outer sleeve to realize the axial positioning of the outer sleeve. It can be raised and lowered relative to the feeding bracket 31, and only moves when the assembly needs to be transferred to avoid interfering with the transfer of the assembly.

[0077] In this embodiment, the feeding bracket 31 includes a fixed frame 311, a first-level movable frame 312 and a second-level movable frame 313. The first-level movable frame 312 is slidably mounted on the fixed frame, and can reciprocate relative to the fixed frame along the axial direction of the fuel rod. The second-level movable frame 313 is slidably mounted on the first-level movable frame 312, and can reciprocate relative to the first-level movable frame 312 along the axial direction of the fuel rod. The assembly tool 32 is arranged on the second-level movable frame 313.

[0078] The driving mechanism of the two-stage moving frame is composed of a rodless cylinder and a guide rail pair, which can effectively reduce the overall size of the device.

[0079] like Figure 7 As shown, in this embodiment, the flipping device 41, the joint assembly device 42 and the welding device 43 constitute a component assembly device, which is mainly used to complete the assembly of the lower transition joint and the outer sleeve, and the fixation, flipping and outer sleeve circumferential welding after assembly. Flipping the component to a vertical state for welding can effectively reduce welding deformation.

[0080] In this embodiment, the flip device 41 includes a clamping mechanism 413, a flip driving mechanism 414 and a base 411, which can realize the continuous material transfer, positioning, clamping and high-precision flipping of the component to a vertical state. The clamping mechanism 413 is used to support and fix the component transmitted from the component conveying device 3, and its structure is consistent with the assembly tool 32 of the component conveying device 3.

[0081] The flip driving mechanism 414 is disposed on the base 411 and is connected to the clamping mechanism 413 via the flip stand 412 for driving the clamping mechanism 413 to flip so that the components on the clamping mechanism 413 are in a vertical state and arranged coaxially with the transition joint.

[0082] In this embodiment, the joint assembly device 42 includes a positioning fixture 421 and a lifting drive mechanism 422.

[0083] The positioning fixture 421 is used to position and clamp the transition joint. The lifting drive mechanism 422 is connected to the positioning fixture 421 for driving the positioning fixture 421 to rise and fall, so as to drive the transition joint to rise until its upper end extends into the outer sleeve of the component, and to tighten the two end faces of the weld to achieve assembly.

[0084] The welding device 43 is mainly used to complete the outer casing circumferential seam welding. It is a multi-gun welding machine, which can effectively reduce welding deformation, improve welding quality and finished product qualification rate.

[0085] In addition, before the outer sleeve is assembled with the fuel rod bundle, the welding of the other end of the outer sleeve with the transition joint can be completed by the flipping device 41, the joint assembly device 42 and the welding device 43, and then the outer sleeve is turned around and transferred to the assembly conveying device 3.

[0086] It is to be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A MOX component assembly welding integrated device, characterized in that: include: A rod bundle assembly device (1), a spot welding device (2), a component conveying device (3), a turning device (41), a joint assembly device (42) and a welding device (43), The rod bundle assembly device (1), the assembly conveying device (3) and the turning device (41) are arranged at intervals along the length direction of the rod bundle. The rod bundle assembly device (1) is used to support the fuel rod bundle and push the fuel rod bundle into the outer sleeve on the assembly conveying device (3). The spot welding device (2) is arranged on one side of the rod bundle assembly device (1) along the radial direction of the fuel rods, and is used to spot weld and fix the outer sleeve and the rod bundle therein to form an assembly. The component conveying device (3) is used to fix the outer sleeve and push the component formed by spot welding onto the turning device (41). The flipping device (41) is used to fix the assembly and flip the assembly to a vertical state and to be coaxially arranged with the transition joint. The joint assembly device (42) is arranged below the flipping device (41) and is used to fix the transition joint and drive the transition joint to rise until its upper end extends into the outer sleeve of the assembly. The welding device (43) is arranged on one side of the joint assembly device (42) and is used to weld the transition joint and the assembly into shape; The rod bundle assembly device (1) comprises a rod bundle support mechanism (11) and a rod bundle push-out mechanism (12); the rod bundle support mechanism (11) is used to support the fuel rod bundle; the rod bundle push-out mechanism (12) is slidably arranged on the rod bundle support mechanism (11) and connected to the fuel rod bundle; the rod bundle push-out mechanism (12) can move relative to the rod bundle support mechanism (11) along the axial direction of the fuel rods to push the fuel rod bundle into the outer sleeve on the conveying device (3); The rod bundle support mechanism (11) comprises a support seat (113), and the rod bundle pushing mechanism (12) comprises a rodless cylinder (121). The rod bundle assembly device (1) further comprises a shielding mechanism (13), The shielding mechanism (13) comprises a fixed shielding body (131) and a movable shielding body (132). The fixed shielding body (131) is fixed on the support seat (113); the movable shielding body (132) has a through slot for the fuel rod bundle to pass through; the movable shielding body (132) is slidably connected to the fixed shielding body (131) and is detachably connected to the movable body of the rodless cylinder (121); and can move synchronously with the fuel rod bundle relative to the fixed shielding body (131) under the drive of the rodless cylinder (121). The movable shielding body (132) is detachably connected to the movable body of the rodless cylinder (121) via a driving clutch mechanism (134). The driving clutch mechanism (134) comprises a connecting piece, a guide rod and a guide cylinder. One end of the guide rod is fixedly connected to the support seat (113), and the other end extends into the guide cylinder. The guide cylinder is fixedly connected to the movable shielding body (132). The connecting piece is detachably connected between the movable body and the guide cylinder.

2. The MOX component assembly welding integrated device according to claim 1, characterized in that: The rod bundle support mechanism (11) further comprises two groups of roller groups. A support station for supporting the fuel rod bundle is provided on the support seat (113). The two groups of roller groups are arranged on both sides of the support station along the radial direction of the fuel rods. Each group of roller groups comprises a plurality of rollers (111). The plurality of rollers (111) of each group of roller groups are arranged at intervals along the axial direction of the fuel rods. The rollers (111) are arranged vertically and are rotatably connected to the support seat (113) and are used to abut against corresponding side surfaces of the fuel rod bundle.

3. The MOX component assembly welding integrated device according to claim 2, characterized in that: The rod bundle ejection mechanism (12) further comprises a connection assembly, the cylinder barrel of the rodless cylinder (121) is fixed on the support seat (113), and its moving body is connected to the fuel rod bundle via the connection assembly.

4. The MOX component assembly welding integrated device according to any one of claims 1 to 3, characterized in that: The assembly conveying device (3) comprises a feeding bracket (31) and an assembly tool. The assembly tool comprises a roller mechanism (321) and a clamping mechanism. The roller mechanism (321) comprises a roller group and a rotation drive mechanism. The roller group comprises a plurality of rollers, which are arranged at intervals along the axial direction of the fuel rod. The rollers are arranged horizontally and are rotatably connected to the feeding bracket (31) and are used to support the outer sleeve. The rotation drive mechanism is arranged on the feeding bracket (31) and is transmission-connected to the plurality of rollers and is used to drive the roller group to rotate so as to drive the spot-welded component to move to the flip mechanism. The clamping mechanism is movably connected to the feeding bracket (31) and is used to fix the outer sleeve during the process of pushing the fuel rod bundle into the outer sleeve.

5. The MOX component assembly welding integrated device according to claim 4, characterized in that: The feeding bracket (31) comprises a fixed frame, a primary movable frame (312) and a secondary movable frame (313); the primary movable frame (312) is slidably mounted on the fixed frame and can reciprocate relative to the fixed frame along the axial direction of the fuel rod; the secondary movable frame (313) is slidably mounted on the primary movable frame (312) and can reciprocate relative to the primary movable frame (312) along the axial direction of the fuel rod; the pairing tool is arranged on the secondary movable frame (313).

6. The MOX component assembly welding integrated device according to any one of claims 1 to 3, characterized in that: The turning device (41) comprises a clamping mechanism (413), a turning driving mechanism (414) and a base (411), wherein the clamping mechanism (413) is used to support and fix the component transmitted from the component conveying device (3). The flipping driving mechanism (414) is arranged on the base (411) and is transmission-connected with the clamping mechanism (413) for driving the clamping mechanism (413) to flip so that the components on the clamping mechanism (413) are in a vertical state and arranged coaxially with the transition joint.

7. The MOX component assembly welding integrated device according to any one of claims 1 to 3, characterized in that: The joint assembly device (42) comprises a positioning fixture (421) and a lifting drive mechanism (422). The positioning fixture (421) is used to position and clamp the transition joint, and the lifting drive mechanism (422) is connected to the positioning fixture (421) in a transmission manner and is used to drive the positioning fixture (421) to rise and fall, so as to drive the transition joint to rise until its upper end extends into the outer sleeve of the component.

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