A high-temperature liquid metal circulation pump welding tool

Abstract

The present invention discloses a high-temperature liquid metal circulating pump welding tool, which belongs to the field of welding technology. It includes a fixing frame, a first annular groove is opened at one end of the fixing frame, a first annular block is slidably installed in the first annular groove, an electric push rod is fixedly installed on the first annular block, a welding head is fixedly installed at one end of the electric push rod close to the center part of the first annular block, an adjustment component is further provided at one end of the first annular block close to the welding head, and a detection component for judging the thickness of the welding material is installed in the shrinkage groove. The present invention can help the staff determine the thickness of the welding material through the detection component provided, so as to reasonably control the welding time, avoid insufficient firmness of the welding point caused by too long or insufficient welding time, and reduce the danger of the high-temperature liquid circulating pump in the process of using liquid metal coolant with physical properties such as high temperature, high flow rate, high density and strong corrosiveness.

Description

Technical Field

[0001] The present invention relates to the technical field of welding, and more particularly to a welding tool for a high-temperature liquid metal circulating pump. Background Art

[0002] Liquid metal circulation pumps are core operating equipment for fourth-generation liquid metal-cooled reactor systems, such as lead-cooled fast reactors. Their performance directly determines the thermal safety, operational stability, and economic efficiency of advanced nuclear energy systems. Liquid metal coolants typically exhibit high temperatures (>450°C), high flow rates, high density, and strong corrosiveness. This makes key components such as the impeller of the liquid metal circulation pump susceptible to failure due to corrosion and leakage during long-term operation. These issues are accompanied by high system vibration and noise, and low reliability. This has become a key bottleneck restricting the safe operation and engineering application of liquid metal reactors.

[0003] Welding of high-temperature liquid circulation pumps is a very important step in the manufacturing process, which involves connecting different pipes and plates (support pipes, bearing brackets, etc.) together through welding technology to ensure that the circulation pump can withstand the pressure, thermal expansion and other mechanical loads of the high-temperature liquid during operation.

[0004] During the welding process, due to the different specifications of the high-temperature liquid circulation pump, the thickness of the welding material will also be different due to different pressure grades. In addition, the high-temperature liquid circulation pump with problems at the welding point may leak during use, which may easily cause safety hazards. Even with a complete welding process, it is difficult for workers to control the welding uniformity during the welding process. There will be problems such as the welding effect time is too short, resulting in insufficient firmness of the welding point, or the welding time is too long, resulting in material damage. The welding efficiency is low and the welding effect is poor. Summary of the Invention

[0005] In view of the problems existing in the prior art, the purpose of the present invention is to provide a high-temperature liquid metal circulating pump welding tool.

[0006] To solve the above problems, the present invention adopts the following technical solutions.

[0007] A high-temperature liquid metal circulating pump welding tool comprises a fixing frame, one end of which is provided with a first annular groove, a first annular block being slidably mounted in the first annular groove, an electric push rod being fixedly mounted on the first annular block, and a welding head being fixedly mounted on one end of the electric push rod near the center of the first annular block;

[0008] An adjustment component is also provided at the end of the first annular block close to the welding head, and the adjustment component includes a sleeve rod fixedly mounted on the first annular block, a moving rod is slidably mounted on the lower side of the sleeve rod, a contraction groove is provided at the lower end of the moving rod away from the first annular block, a detection component for judging the thickness of the welding material is installed inside the contraction groove, and the detection component includes a moving block slidably mounted inside the contraction groove, a first magnet is embedded in the end of the moving block away from the first annular block, and the first magnet magnetically cooperates with the material to be welded.

[0009] Furthermore, a tension spring is fixedly installed on one end of the moving block located inside the contraction groove, and the other end of the tension spring is fixedly connected to the inner wall of the contraction groove.

[0010] Furthermore, a second annular groove is formed at one end of the first annular block located inside the annular groove, and a second annular block is provided inside the second annular groove. The second annular block rotates relative to the second annular groove.

[0011] Furthermore, a cavity is provided on one side of the first annular groove, a multi-section telescopic rod is provided inside the cavity, a rubber wheel is fixedly mounted on the lower end of the multi-section telescopic rod, the outer wall of the rubber wheel is in frictional contact with the outer wall of the first annular block, a driving motor is mounted on the upper end of the fixing frame, the output end of the driving motor passes through the fixing frame and extends into the cavity and is fixedly connected to the upper end of the multi-section telescopic rod.

[0012] Furthermore, the interior of the multi-section telescopic rod is a hollow structure, and a sealing cover is fixedly installed on the inner wall of the upper end of the cavity. The sealing cover is sleeved on the upper side of the multi-section telescopic rod, and air holes are opened at the position corresponding to the sealing cover on the upper side of the multi-section telescopic rod. A ventilation pipe is fixedly installed on one end of the sealing cover close to the second annular block, and the end of the ventilation pipe away from the multi-section telescopic rod passes through the second annular block and is fixedly connected to it.

[0013] Furthermore, there is a gap between the middle of the sealing cover and the outer wall of the multi-section telescopic rod, and there is also a gap between the second annular block and the inner wall of the second annular groove. The two ends of the ventilation pipe are respectively connected to the inside of the two gaps, and the second annular groove is connected to the inside of the sleeve rod.

[0014] Furthermore, a ventilation groove is provided through the upper end of the movable rod, the lower end of the ventilation groove is connected to the upper side of the interior of the contraction groove, the upper side of the movable block blocks the lower end of the ventilation groove, and a notch is provided on the outer wall of the movable rod relative to the lower end of the ventilation groove, and the notch is connected to the upper side of the interior of the contraction groove.

[0015] Furthermore, the cross section of the gap is a "convex" structure, and a sealing block is slidably installed inside the gap. The size of the sealing block is larger than the size of the smaller part of the gap, and the size of the sealing block is smaller than the size of the larger part of the gap.

[0016] Furthermore, a second magnet is fixedly mounted on one end of the sealing block close to the upper side of the moving block, and a third magnet is embedded in a position on the upper side of the moving block corresponding to the second magnet, and the third magnet and the second magnet attract each other.

[0017] Furthermore, a threaded rod is provided through the upper end of the sleeve rod, the threaded rod is rotatably connected to the sleeve rod, and the lower side of the threaded rod is threadedly connected to the moving rod.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] (1) The detection component provided in the present invention can help workers determine the thickness of the welding material, thereby reasonably controlling the welding time, avoiding the problem of insufficient firmness of the welding point caused by excessive or insufficient welding time, and reducing the danger during the use of the high-temperature liquid circulation pump.

[0020] (2) The present invention provides a multi-section telescopic rod in conjunction with a rubber wheel, which can automatically adjust the position corresponding to the first annular block after the moving rod moves, thereby automatically adjusting the rotation speed of the first annular block according to the thickness of the material to be welded, automatically controlling the welding time of the same welding point during welding, and ensuring the uniformity of welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic structural diagram of the sealing cover and cavity portion of the present invention;

[0023] Figure 3 For the present invention Figure 2 A schematic diagram of the structure at center A;

[0024] Figure 4 This is a schematic diagram of the structure of the multi-section telescopic rod and the rubber wheel of the present invention;

[0025] Figure 5 For the present invention Figure 4 A magnified schematic diagram of the structure at point B in the middle;

[0026] Figure 6 This is a schematic diagram of the internal structure of the sleeve rod of the present invention;

[0027] Figure 7 For the present invention Figure 6 A magnified schematic diagram of the structure at point C in the middle;

[0028] Figure 8 It is a schematic structural diagram of the first magnet and the moving block of the present invention;

[0029] Figure 9 This is a partial structural diagram of the first annular groove of the present invention.

[0030] Description of the numbers in the figure:

[0031] 1. Fixing frame; 101. First annular groove; 102. First annular block; 103. Electric push rod; 104. Welding head; 105. Second annular groove; 106. Second annular block; 107. Cavity; 108. Multi-section telescopic rod; 109. Rubber wheel; 110. Drive motor; 111. Sealing cover; 112. Air hole; 113. Ventilation pipe;

[0032] 2. Adjustment assembly; 201. Sleeve rod; 202. Moving rod; 203. Contraction groove; 204. Ventilation groove; 205. Notch; 206. Sealing block; 207. Second magnet; 208. Third magnet; 209. Threaded rod;

[0033] 3. Detection assembly; 301. Moving block; 302. First magnet; 303. Tension spring. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0035] See also Figures 1 to 9 A high-temperature liquid metal circulating pump welding tool comprises a fixing frame 1, a first annular groove 101 is formed at one end of the fixing frame 1, a first annular block 102 is slidably mounted inside the first annular groove 101, an electric push rod 103 is fixedly mounted on the first annular block 102, and a welding head 104 is fixedly mounted on one end of the electric push rod 103 near the center of the first annular block 102;

[0036] An adjustment assembly 2 is further provided at one end of the first annular block 102 close to the welding head 104. The adjustment assembly 2 includes a sleeve rod 201 fixedly mounted on the first annular block 102. A moving rod 202 is slidably mounted on the lower side of the sleeve rod 201. A contraction groove 203 is provided at the lower end of the moving rod 202 away from the first annular block 102. A detection assembly 3 for determining the thickness of the welding material is installed inside the contraction groove 203. The detection assembly 3 includes a moving block 301 slidably mounted inside the contraction groove 203. A first magnet 302 is embedded in the end of the moving block 301 away from the first annular block 102. The first magnet 302 magnetically cooperates with the material to be welded.

[0037] A tension spring 303 is fixedly mounted on one end of the moving block 301 located inside the contraction groove 203 , and the other end of the tension spring 303 is fixedly connected to the inner wall of the contraction groove 203 .

[0038] By adopting the above technical solution, when welding the circulating pump, the moving rod 202 is moved so that it is located in the gap between the two welding parts. Thereafter, the position of the welding head 104 is adjusted by the electric push rod 103 to weld the material to be welded, wherein the first annular block 102 rotates inside the first annular groove 101 to drive the electric push rod 103 to change its position, thereby changing the position of the welding head 104 to weld at different positions. At the same time, the rotation of the first annular block 102 can drive the sleeve rod 201 to rotate and change its position. At the same time, the position of the moving rod 202 will also change with the change of the position of the sleeve rod 201. When welding at positions with different thicknesses, the moving rod 202 can be moved again so that the moving block 301 can detect the new position again.

[0039] When the moving rod 202 is inserted into the gap between the workpieces to be welded, the first magnet 302 can extend from the shrinkage groove 203 under the action of magnetic force and be sucked onto the workpiece to be welded. As the moving rod 202 continues to move, when the moving block 301 passes over the side wall of the workpiece to be welded, the first magnet 302 is no longer affected by the magnetic force and pulls the moving block 301 out of the shrinkage groove 203. At this time, the moving rod 202 stops moving. When the moving block 301 is not pulled by the first magnet 302, the tension spring 303 can pull the moving block 301 to move into the shrinkage groove 203.

[0040] A second annular groove 105 is formed at one end of the first annular block 102 located inside the annular groove. A second annular block 106 is disposed inside the second annular groove 105. The second annular block 106 rotates relative to the second annular groove 105.

[0041] A cavity 107 is formed on one side of the first annular groove 101. A multi-section telescopic rod 108 is provided inside the cavity 107. A rubber wheel 109 is fixedly mounted on the lower end of the multi-section telescopic rod 108. The outer wall of the rubber wheel 109 is in frictional contact with the outer wall of the first annular block 102. A drive motor 110 is mounted on the upper end of the fixing frame 1. The output end of the drive motor 110 extends through the fixing frame 1 to the interior of the cavity 107 and is fixedly connected to the upper end of the multi-section telescopic rod 108.

[0042] The interior of the multi-section telescopic rod 108 is a hollow structure. A sealing cover 111 is fixedly installed on the inner wall of the upper end of the cavity 107. The sealing cover 111 is sleeved on the upper side of the multi-section telescopic rod 108. An air hole 112 is opened on the upper side of the multi-section telescopic rod 108 at a position corresponding to the sealing cover 111. A ventilation pipe 113 is fixedly installed on the end of the sealing cover 111 close to the second annular block 106. The end of the ventilation pipe 113 away from the multi-section telescopic rod 108 passes through the second annular block 106 and is fixedly connected thereto.

[0043] There is a gap between the middle of the sealing cover 111 and the outer wall of the multi-section telescopic rod 108, and there is also a gap between the second annular block 106 and the inner wall of the second annular groove 105. The two ends of the vent pipe 113 are respectively connected to the interior of the two gaps, and the second annular groove 105 is connected to the interior of the sleeve rod 201. The gap can ensure that the sleeve rod 201 is always connected to the interior of the vent pipe 113 when the first annular block 102 and the second annular block 106 rotate, and at the same time, the vent pipe 113 is connected to the interior of the multi-section telescopic rod 108.

[0044] By adopting the above technical solution, when the mobile rod 202 descends relative to the sleeve rod 201, the air pressure inside the sleeve rod 201 can be reduced. At this time, the air in the multi-section telescopic rod 108 can enter the sleeve rod 201 through the vent pipe 113, so that the multi-section telescopic rod 108 can be contracted. After the multi-section telescopic rod 108 contracts, it can drive the rubber wheel 109 at its lower end to move. After the rubber wheel 109 moves, it can correspond to different positions of the first annular block 102. When the drive motor 110 is working, it can drive the multi-section telescopic rod 108 to rotate, and the multi-section telescopic rod 108 can be rotated. After the rotation of 8, it can drive the rubber wheel 109 fixedly connected thereto to rotate. After the rotation of the rubber wheel 109, it can make friction contact with the first annular block 102. Under the action of the friction force, the first annular block 102 can rotate inside the first annular groove 101. After the rotation of the first annular block 102, it can drive the electric push rod 103 to rotate, thereby changing the position of the welding head 104. Moreover, after the position of the rubber wheel 109 is changed, the position in contact with the first annular block 102 is further away from the center position of the first annular block 102. At this time, the rotation speed of the first annular block 102 will be reduced.

[0045] A ventilation groove 204 is formed through the upper end of the moving rod 202, and the lower end of the ventilation groove 204 is connected to the upper side of the shrinkage groove 203. The upper side of the moving block 301 blocks the lower end of the ventilation groove 204. A notch 205 is formed on the outer wall of the moving rod 202 at a position opposite the lower end of the ventilation groove 204, and the notch 205 is connected to the upper side of the shrinkage groove 203.

[0046] The cross section of the notch 205 is a convex structure, and a sealing block 206 is slidably installed inside the notch 205. The size of the sealing block 206 is larger than the size of the smaller part of the notch 205, and the size of the sealing block 206 is smaller than the size of the larger part of the notch 205.

[0047] A second magnet 207 is fixedly mounted on one end of the sealing block 206 close to the upper side of the moving block 301 , and a third magnet 208 is embedded in the upper side of the moving block 301 corresponding to the second magnet 207 . The third magnet 208 and the second magnet 207 attract each other.

[0048] By adopting the above technical solution, after the moving rod 202 descends to a certain position, the first magnet 302 and the workpiece to be welded attract each other, and after the moving block 301 moves to the outside of the contraction groove 203, the upper side of the moving block 301 can block the lower end of the ventilation groove 204. At this time, the ventilation groove 204 is in a sealed state. In this state, the moving rod 202 descends to reduce the air pressure inside the sleeve rod 201. When the moving block 301 extends from the inside of the contraction groove 203, the third magnet 208 and the second magnet 207 are close to each other. At this time, the third magnet 208 and the second magnet 207 attract each other. Afterwards, when the moving block 301 moves from the outside of the contraction groove 203 to the inside of the contraction groove 203, the second magnet 207 Under the magnetic force of the third magnet 208, 207 can drive the sealing block 206 to move and block the gap 205. After the gap 205 is blocked, no air can enter. During the welding process, it can effectively ensure that the air pressure inside the sleeve rod 201 and the multi-section telescopic rod 108 remains in a stable state. When it is not needed, the movable rod 202 is controlled to rise. After the movable rod 202 rises, the pressure inside the sleeve rod 201 rises. At this time, air can squeeze the sealing block 206 through the gap 205, causing it to move and open the gap 205. After that, the pressure inside the sleeve rod 201 and the multi-section telescopic rod 108 can be restored to the same as the external atmospheric pressure, and each component can be restored to its initial state under the action of gravity.

[0049] A threaded rod 209 is provided through the upper end of the sleeve rod 201 . The threaded rod 209 is rotatably connected to the sleeve rod 201 , and the lower side of the threaded rod 209 is threadedly connected to the moving rod 202 .

[0050] By adopting the above technical solution, the position of the moving rod 202 can be adjusted by rotating the threaded rod 209 , so that the moving rod 202 moves relative to the sleeve rod 201 .

[0051] Instructions for use: Turn the threaded rod 209 to adjust the position of the moving rod 202 so that it can be inserted into the gap between the materials to be welded. After the moving block 301 enters the gap, the first magnet 302 and the materials to be welded attract each other, and the moving block 301 extends from the contraction groove 203. At this time, the ventilation groove 204 is blocked. As the moving rod 202 continues to descend, the moving rod 202 can move relative to the sleeve rod 201, thereby reducing the air pressure inside the sleeve rod 201. After the air pressure inside the sleeve rod 201 is reduced, the air pressure inside the multi-section telescopic rod 108 can be reduced through the ventilation pipe 113, thereby reducing the air pressure inside the multi-section telescopic rod 108. The telescopic rod 108 is retracted to adjust the position of the rubber wheel 109. When the moving block 301 passes over the gap and the first magnet 302 does not correspond to the side wall of the material to be welded, the tension spring 303 can pull the moving block 301 to move it back into the shrinkage groove 203. When the moving block 301 moves back into the shrinkage groove 203, the third magnet 208 and the second magnet 207 move the sealing block 206 to block the gap 205. Afterwards, the electric push rod 103 is used to adjust the position of the welding head 104 to weld the material to be welded. After the welding is completed, the threaded rod 209 is rotated to move the moving rod 202 to the initial position.

[0052] The above are only preferred embodiments of the present invention; however, the scope of protection of the present invention is not limited thereto. Any person skilled in the art who, within the technical scope disclosed by the present invention, makes equivalent substitutions or modifications based on the technical solutions and improved concepts of the present invention shall be covered by the scope of protection of the present invention.

Claims

1. A high-temperature liquid metal circulating pump welding tool, comprising a fixing frame (1), characterized in that: A first annular groove (101) is formed at one end of the fixing frame (1), a first annular block (102) is slidably mounted inside the first annular groove (101), an electric push rod (103) is fixedly mounted on the first annular block (102), and a welding head (104) is fixedly mounted on one end of the electric push rod (103) close to the center of the first annular block (102); An adjustment component (2) is further provided at one end of the first annular block (102) close to the welding head (104), the adjustment component (2) comprising a sleeve rod (201) fixedly mounted on the first annular block (102), a moving rod (202) being slidably mounted on the lower side of the sleeve rod (201), a shrinkage groove (203) being provided at one end of the lower side of the moving rod (202) away from the first annular block (102), a detection component (3) for judging the thickness of the welding material being installed inside the shrinkage groove (203), the detection component (3) comprising a moving block (301) slidably mounted inside the shrinkage groove (203), a first magnet (302) being embedded in one end of the moving block (301) away from the first annular block (102), the first magnet (302) being magnetically matched with the material to be welded; A second annular groove (105) is formed at one end of the first annular block (102) located inside the annular groove, a second annular block (106) is provided inside the second annular groove (105), and the second annular block (106) rotates relative to the second annular groove (105); A cavity (107) is provided on one side of the first annular groove (101), a multi-section telescopic rod (108) is provided inside the cavity (107), a rubber wheel (109) is fixedly mounted on the lower end of the multi-section telescopic rod (108), an outer wall of the rubber wheel (109) is in frictional contact with an outer wall of the first annular block (102), a driving motor (110) is mounted on the upper end of the fixing frame (1), an output end of the driving motor (110) passes through the fixing frame (1) and extends into the cavity (107) and is fixedly connected to the upper end of the multi-section telescopic rod (108); The interior of the multi-section telescopic rod (108) is a hollow structure, and a sealing cover (111) is fixedly installed on the inner wall of the upper end of the cavity (107). The sealing cover (111) is sleeved on the upper side of the multi-section telescopic rod (108), and an air hole (112) is opened at a position corresponding to the sealing cover (111) on the upper side of the multi-section telescopic rod (108). A ventilation pipe (113) is fixedly installed on one end of the sealing cover (111) close to the second annular block (106), and the end of the ventilation pipe (113) away from the multi-section telescopic rod (108) passes through the second annular block (106) and is fixedly connected to it; There is a gap between the middle of the sealing cover (111) and the outer wall of the multi-section telescopic rod (108), and there is also a gap between the second annular block (106) and the inner wall of the second annular groove (105). The two ends of the vent pipe (113) are respectively connected to the inside of the two gaps, and the second annular groove (105) is connected to the inside of the sleeve rod (201).

2. A high-temperature liquid metal circulating pump welding tool according to claim 1, characterized in that: A tension spring (303) is fixedly mounted on one end of the moving block (301) located inside the contraction groove (203), and the other end of the tension spring (303) is fixedly connected to the inner wall of the contraction groove (203).

3. A high-temperature liquid metal circulating pump welding tool according to claim 2, characterized in that: A ventilation groove (204) is provided through the upper end of the moving rod (202), and the lower end of the ventilation groove (204) is communicated with the upper inner side of the contraction groove (203). The upper side of the moving block (301) blocks the lower end of the ventilation groove (204). A notch (205) is provided on the outer wall of the moving rod (202) at a position relative to the lower end of the ventilation groove (204), and the notch (205) is communicated with the upper inner side of the contraction groove (203).

4. A high-temperature liquid metal circulating pump welding tool according to claim 3, characterized in that: The cross section of the notch (205) is a convex structure, and a sealing block (206) is slidably installed inside the notch (205), wherein the size of the sealing block (206) is larger than the size of the smaller part of the notch (205), and the size of the sealing block (206) is smaller than the size of the larger part of the notch (205).

5. The high-temperature liquid metal circulating pump welding tool according to claim 4, characterized in that: A second magnet (207) is fixedly mounted on one end of the sealing block (206) close to the upper side of the moving block (301), and a third magnet (208) is embedded in a position on the upper side of the moving block (301) corresponding to the second magnet (207), and the third magnet (208) and the second magnet (207) attract each other.

6. The high-temperature liquid metal circulating pump welding tool according to claim 5, characterized in that: A threaded rod (209) is provided through the upper end of the sleeve rod (201), the threaded rod (209) is rotatably connected to the sleeve rod (201), and the lower side of the threaded rod (209) is threadedly connected to the moving rod (202).

Images