Nuclear power plant pipeline welding equipment

Abstract

The utility model discloses a nuclear power plant pipeline welding device which comprises a circular guide rail used for being installed on a pipeline. The moving mechanism is movably mounted on the circular guide rail; the welding gun device comprises a welding gun position adjusting mechanism, a first connecting plate, a welding gun, a molten pool camera and a wire feeding rod, the welding gun position adjusting mechanism is connected with the moving mechanism, the first connecting plate is connected with the welding gun position adjusting mechanism, and the welding gun, the molten pool camera and the wire feeding rod are installed on the same side face of the first connecting plate; and the wire feeding mechanism comprises a second connecting plate, a wire disc assembly and a wire feeding driving assembly, and the wire feeding driving assembly is installed on the second connecting plate and used for feeding the welding wires on the wire disc to a wire feeding rod. A weldable pipeline is located in a manually unreachable welding area, the welding problem existing in limited pipeline welding seams can be solved, and compared with manual welding, the welding efficiency is higher, the quality is more stable, and the requirement for the level of operators is not high. And manual welding can be replaced, and workers are prevented from being irradiated.

Description

Technical Field

[0001] This utility model relates to the field of nuclear power plant pipeline welding technology, and in particular to a nuclear power plant pipeline welding equipment. Background Technology

[0002] Nuclear power plant pipelines contain many narrow-gap welds located in confined spaces. When such welds leak or need to be cut off and re-welded for maintenance, manual welding presents the following problems: it requires extremely high skill levels from the welders; personnel are exposed to high levels of radiation, resulting in low efficiency; some welding positions are inaccessible; and the welding quality is uncontrollable. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a nuclear power plant pipeline welding equipment.

[0004] The technical solution adopted by this utility model to solve its technical problem is: to construct a nuclear power plant pipeline welding equipment, comprising:

[0005] A circular guide rail, used for mounting onto a pipe;

[0006] A movable mechanism, which is movably mounted on the circular guide rail;

[0007] A welding torch device includes a welding torch position adjustment mechanism, a first connecting plate, a welding torch, a molten pool camera, and a wire feeder. The welding torch position adjustment mechanism is connected to the moving mechanism, and the first connecting plate is connected to the welding torch position adjustment mechanism. The welding torch, the molten pool camera, and the wire feeder are mounted on the same side of the first connecting plate, and the welding torch, the molten pool camera, and the wire feeder are spaced apart. The wire feeder is mounted on one side of the welding torch head to guide the welding wire to the tungsten tip of the welding torch head.

[0008] The wire feeding mechanism includes a second connecting plate, a wire spool assembly, and a wire feeding drive assembly. The wire spool assembly includes a wire spool and a wire spool carriage connected to the wire spool. The wire spool carriage is movably mounted on the circular guide rail. The second connecting plate connects the wire spool carriage and the moving mechanism. The wire feeding drive assembly is mounted on the second connecting plate and is used to feed the welding wire on the wire spool to the wire feeding rod.

[0009] In some embodiments, the circular guide rail includes a first semicircular guide rail and a second semicircular guide rail that are detachably connected.

[0010] In some embodiments, the inner side of the circular guide rail is provided with a plurality of adjustable feet along its circumference.

[0011] In some embodiments, stepped surfaces are formed at both ends of the inner surface of the circular guide rail;

[0012] The moving mechanism includes a first drive motor, a housing, a moving wheel, and a guide assembly. The first drive motor is mounted on the outside of the housing, the moving wheel is mounted inside the housing and the moving wheel contacts the outer surface of the circular guide rail, and the first drive motor is connected to the moving wheel through a first gear set.

[0013] The guide assembly comprises two components, which are symmetrically installed on the left and right sides of the housing along the direction of movement. Each guide assembly includes a first fixing block, a second fixing block, a connecting block, a slider, a guide wheel, and an adjusting bolt. The first fixing block and the second fixing block are spaced apart from each other. The connecting block connects the upper parts of the first fixing block and the second fixing block. The slider is movably installed between the first fixing block and the second fixing block. The guide wheel is installed on the side of the slider away from the connecting block and contacts the stepped surface. The adjusting bolt passes through the connecting block and is connected to the slider.

[0014] In some embodiments, the housing has a first side and a second side along the moving direction, and the first drive motor is mounted on the first side of the housing;

[0015] The moving mechanism further includes a bending plate, which includes a first plate and a second plate. The first plate is connected to the upper surface of the housing, and the second plate is located on the second side of the housing.

[0016] The welding torch position adjustment mechanism includes a front-to-back adjustment component, a height adjustment component, and an L-shaped plate. The front-to-back adjustment component includes a first mounting shell, a second drive motor, a first lead screw nut seat, a first transmission lead screw, a second gear set, and a sliding plate. The second drive motor and the first transmission lead screw are installed in the first mounting shell, and the second drive motor and the first transmission lead screw are connected through the second gear set. The first mounting shell is provided with a slide rail, and the sliding plate is movably installed on the slide rail. The first transmission lead screw passes through the first lead screw nut seat, and the first lead screw nut seat is connected to the sliding plate.

[0017] The height adjustment assembly includes a second mounting shell, a third drive motor, a second lead screw nut seat, a second transmission lead screw, and a third gear set. The L-shaped plate includes a vertically arranged first connecting part and a second connecting part; the first connecting part is connected to the slide plate, and the second connecting part is connected to the second mounting shell.

[0018] The third drive motor and the second transmission lead screw are installed in the second mounting housing, and the third drive motor and the second transmission lead screw are connected through a third gear set. The second transmission lead screw passes through the second lead screw nut seat, and the second lead screw nut seat is connected to one end of the first connecting plate.

[0019] In some embodiments, the wire feeding drive assembly includes a fourth drive motor, a third mounting housing, a wire feeding wheel, a fourth gear set, a wire clamping rod, and a wire clamping bearing. The fourth drive motor is mounted on the side of the third mounting housing, and the fourth drive motor is connected to the wire feeding wheel through the fourth gear set.

[0020] The wire clamping rod is mounted on the third mounting shell, the wire clamping bearing is mounted on the wire clamping rod, and the wire clamping bearing is disposed opposite to the circumferential surface of the wire feeding wheel.

[0021] In some embodiments, the circumferential surface of the wire feeding wheel is provided with a V-groove, and the wire clamping bearing is disposed opposite to the V-groove.

[0022] In some embodiments, the wire feeding drive assembly further includes a motor mounting base, the fourth drive motor is mounted on the motor mounting base, and the motor mounting base is detachably mounted on the side of the third mounting housing;

[0023] The wire feeding drive assembly also includes a tensioning bolt, which is used to pass through the motor mounting base to abut one end of the welding wire clamping rod, so as to adjust the contact state between the welding wire clamping bearing and the wire feeding wheel.

[0024] In some embodiments, a first wire feeding tube connector and a second wire feeding tube connector may be provided on both sides of the circumference of the wire feeding wheel, the first wire feeding tube connector being connected to the wire spool and the second wire feeding tube connector being connected to the wire feeding rod.

[0025] In some embodiments, the number of molten pool cameras is two, and the two molten pool cameras are respectively located on the left and right sides of the welding torch.

[0026] The advantages of implementing this utility model are as follows: the nuclear power plant pipeline welding equipment is relatively compact and can weld pipelines in areas inaccessible to manual welding. It can solve the welding problem of pipeline welds in confined spaces. Compared with manual welding, it has higher welding efficiency, more stable quality, and lower skill requirements for operators. Furthermore, it can replace manual welding, avoiding radiation exposure for workers. Attached Figure Description

[0027] To more clearly illustrate the technical solution of this utility model, the present utility model will be further described below in conjunction with the accompanying drawings and embodiments. It should be understood that the following drawings only show some embodiments of this utility model and should not be considered as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort. In the drawings:

[0028] Figure 1 This is a schematic diagram illustrating the application of nuclear power plant pipeline welding equipment in some embodiments of this utility model;

[0029] Figure 2 This is a schematic diagram of the nuclear power plant pipeline welding equipment without circular guide rails in some embodiments of this utility model;

[0030] Figure 3 This is a schematic diagram of the structure of the circular guide rail in some embodiments of this utility model;

[0031] Figure 4 This is one of the structural schematic diagrams of the moving mechanism in some embodiments of this utility model;

[0032] Figure 5 This is the second schematic diagram of the moving mechanism in some embodiments of this utility model;

[0033] Figure 6 This is a schematic diagram of the structure of the guide component in some embodiments of this utility model;

[0034] Figure 7 This is a schematic diagram of the welding torch position adjustment mechanism in some embodiments of this utility model;

[0035] Figure 8 This is a schematic diagram of the front and rear adjustment components of the welding torch position adjustment mechanism in some embodiments of this utility model;

[0036] Figure 9 This is a schematic diagram of the height adjustment component of the welding torch position adjustment mechanism in some embodiments of this utility model;

[0037] Figure 10 This is a partial structural schematic diagram of the welding torch device in some embodiments of this utility model;

[0038] Figure 11 This is a schematic diagram of the wire feeding mechanism in some embodiments of this utility model;

[0039] Figure 12 This is a schematic diagram of the wire feeding drive assembly in some embodiments of the present invention;

[0040] Figure 13This is a partial structural schematic diagram of the wire feeding drive assembly in some embodiments of this utility model. Detailed Implementation

[0041] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the orientations or positional relationships indicated by terms such as "front," "rear," "upper," "lower," "left," "right," "longitudinal," "horizontal," "vertical," "horizontal," "top," "bottom," "inner," "outer," "head," and "tail" are based on the orientations or positional relationships shown in the accompanying drawings, and are constructed and operated in a specific orientation. They are only for the convenience of describing this technical solution and do not indicate that the device or component referred to must have a specific orientation; therefore, they should not be construed as limitations on this utility model.

[0042] It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," "fixing," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. When an component is referred to as being "on" or "below" another component, the component can be located "directly" or "indirectly" on the other component, or there may be one or more intermediary components. The terms "first," "second," "third," etc., are only for the convenience of describing this technical solution and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first," "second," "third," etc., may explicitly or implicitly include one or more of that feature. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0043] In the following description, specific details such as particular system structures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of the present invention. However, those skilled in the art will understand that the present invention can be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

[0044] See Figures 1 to 13 This utility model discloses a nuclear power plant pipeline welding equipment, which includes a circular guide rail 10, a moving mechanism 20, a welding torch device 30, and a wire feeding mechanism 40. The moving mechanism 20, the welding torch device 30, and the wire feeding mechanism 40 can be arranged as follows: Figure 1 and Figure 2 As shown.

[0045] The circular guide rail 10 is used for mounting onto the pipe 100.

[0046] The moving mechanism 20 is movably mounted on the circular guide rail 10 and is used to drive the welding gun device 30 and the wire feeding mechanism 40 to move circumferentially along the circular guide rail 10, thereby enabling the welding gun device 30 to weld the pipe 100.

[0047] The welding torch device 30 includes a welding torch position adjustment mechanism 31, a first connecting plate 32, a welding torch 33, a weld pool camera 34, and a wire feeder 35. The welding torch position adjustment mechanism 31 is connected to the moving mechanism 20, and the first connecting plate 32 is connected to the welding torch position adjustment mechanism 31. The welding torch 33, the weld pool camera 34, and the wire feeder 35 are mounted on the same side of the first connecting plate 32, and are spaced apart. The wire feeder 35 is mounted on one side of the welding torch head of the welding torch 33 to guide the welding wire to the tungsten tip of the welding torch head. Furthermore, there are two weld pool cameras 34, which are respectively located on the left and right sides of the welding torch 33 for observing the state of the weld pool.

[0048] The wire feeding mechanism 40 includes a second connecting plate 41, a wire spool assembly 42, and a wire feeding drive assembly 43. The wire spool assembly 42 includes a wire spool 421 and a wire spool carriage 422 connected to the wire spool 421. The wire spool carriage 422 is movably mounted on the circular guide rail 10. The structure of the wire spool carriage 422 can be similar to or the same as that of the moving mechanism 20. In some embodiments, the wire spool carriage 422 may not be provided, and the wire spool 421 can be directly mounted on the second connecting plate 41. The second connecting plate 41 connects the wire spool carriage 422 and the moving mechanism 20. The wire feeding drive assembly 43 is mounted on the second connecting plate 41 and is used to feed the welding wire on the wire spool 421 to the wire feeding rod 35. Both the first connecting plate 32 and the second connecting plate 41 have a "C" shape or a certain arc shape so that the connected mechanism can be arranged along the circular guide rail 10.

[0049] like Figure 3 As shown, in some embodiments, the circular guide rail 10 includes a first semicircular guide rail 11 and a second semicircular guide rail 12 that are detachably connected. The first semicircular guide rail 11 and the second semicircular guide rail 12 can be fixedly connected by bolts or screws. The outer surface of the circular guide rail 10 is uniformly patterned to increase friction.

[0050] like Figure 3As shown, in some embodiments, the inner side of the circular guide rail 10 is provided with a plurality of adjusting feet 13 along its circumference. The inner side of the circular guide rail 10 may be provided with a plurality of grooves. The adjusting feet 13 may be block-shaped, and the number of adjusting feet 13 may be six. The number of grooves may be the same as the number of adjusting feet 13. The adjusting feet 13 may be fixed in the grooves by bolts or screws, and the radial extension of the adjusting feet 13 may be adjusted by adjusting the bolts or screws, so that the circular guide rail 10 clamps the pipe 100.

[0051] like Figures 3 to 6 As shown, in some embodiments, stepped surfaces 10a are formed at both axial ends of the inner surface of the circular guide rail 10. The moving mechanism 20 may include a first drive motor 21, a housing 22, a moving wheel 23, and a guide assembly 24. The first drive motor 21 is mounted on the outside of the housing 22. For example, the first drive motor 21 may be mounted on the side of the housing 22 via an L-shaped mounting bracket. The housing 22 may be a generally square cylindrical structure. The moving wheel 23 is mounted inside the housing 22 and contacts the outer surface of the circular guide rail 10. The first drive motor 21 is connected to the moving wheel 23 via a first gear set 25. The first gear set 25 may include components mounted on the first drive motor 21. The first drive gear at the output end of the motor 21 and the first driven gear mounted on the side of the movable wheel 23 protruding from the housing 22 mesh with each other, so that the first drive motor 21 can drive the movable wheel 23 to rotate. Further, the first gear set 25 may also include a first connecting gear mounted on the side of the housing 22 or the L-shaped mounting base, which meshes with both the first drive gear and the first driven gear. When there are two movable wheels 23, the first gear set 25 may also include a second connecting gear mounted on the side of the housing 22, which meshes with both of the first driven gears. The first drive motor 21 may be a servo motor, which has high adjustment precision and forward / reverse rotation capabilities.

[0052] like Figure 4 and Figure 5 As shown, there are two guide components 24, which are symmetrically mounted on the left and right sides of the housing 22 along the direction of movement. Figure 6As shown, each guide assembly 24 includes a first fixing block 241, a second fixing block 242, a connecting block 243, a slider 244, a guide wheel 245, and an adjusting bolt 246. The first fixing block 241 and the second fixing block 242 are arranged at intervals relative to each other. The connecting block 243 connects the upper parts of the first fixing block 241 and the second fixing block 242. The slider 244 is movably installed between the first fixing block 241 and the second fixing block 242. The guide wheel 245 is installed... The guide wheel 245 is in contact with the stepped surface 10a at the side of the slider 244 away from the connecting block 243; the adjusting bolt 246 passes through the connecting block 243 and is connected to the slider 244 to adjust the position of the slider 244, thereby adjusting the tightness of the contact between the guide wheel 245 and the stepped surface 10a. This allows the guide wheel 245 to be in close contact with the stepped surface 10a and increases the friction between the moving wheel 23 and the upper surface of the circular guide rail 10, making the movement more stable and reliable.

[0053] Combination Figure 4 , Figure 7 , Figure 8 , Figure 9 As shown, in some embodiments, the housing 22 has a first side and a second side along the moving direction, and the first drive motor 21 is mounted on the first side of the housing 22; the moving mechanism 20 also includes a bending plate 26, which includes a first plate 261 and a second plate 262. The first plate 261 is connected to the upper surface of the housing 22, and the second plate 262 is located on the second side of the housing 22.

[0054] The welding torch position adjustment mechanism 31 includes a front-to-back adjustment component 311, a height adjustment component 312, and an L-shaped plate 313. The front-to-back adjustment component 311 and the height adjustment component 312 can be connected through the L-shaped plate 313.

[0055] like Figure 8As shown, the front-to-back adjustment assembly 311 includes a first mounting housing 3111, a second drive motor 3112, a first lead screw nut seat 3113, a first transmission lead screw 3114, a second gear set 3115, and a sliding plate 3116. The second drive motor 3112 and the first transmission lead screw 3114 are mounted inside the first mounting housing 3111, and are connected to each other via the second gear set 3115. The first mounting housing 3111 is provided with a slide rail 3117, and the sliding plate 3116 is movably mounted on the slide rail 3117. The first transmission lead screw 3114 passes through the first lead screw nut seat 3113, and the first lead screw nut seat 3113 is connected to the sliding plate 3116. The second gear set 3115 may include a second drive gear, The second driven gear is connected to the output end of the second drive motor 3112 and can be connected to one end of the first transmission screw 3114. The second drive gear and the second driven gear mesh with each other, so that when the second drive motor 3112 drives the second drive gear to rotate, the second drive gear drives the second driven gear to rotate, which in turn causes the first transmission screw 3114 to rotate. This allows the first screw nut seat 3113 to move axially along the first transmission screw 3114, thereby moving the slide plate 3116. Furthermore, the second gear set 3115 may also include a third connecting gear, which can be mounted on the side of the first mounting housing 3111. The third connecting gear meshes with both the second drive gear and the second driven gear. The second drive motor 3112 can be a servo motor, which has high adjustment precision and forward / reverse rotation capabilities.

[0056] like Figure 9 As shown, the height adjustment assembly 312 includes a second mounting housing 3121, a third drive motor 3122, a second lead screw nut seat 3123, a second transmission lead screw 3124, and a third gear set 3125. The L-shaped plate 313 includes a vertically arranged first connecting part 3131 and a second connecting part 3132 (combined). Figure 7 The first connecting part 3131 is connected to the slide plate 3116, and the second connecting part 3132 is connected to the second mounting shell 3121.

[0057] The third drive motor 3122 and the second transmission screw 3124 are installed in the second mounting housing 3121, and the third drive motor 3122 and the second transmission screw 3124 are connected through the third gear set 3125. The second transmission screw 3124 passes through the second screw nut seat 3123, and the second screw nut seat 3123 is connected to one end of the first connecting plate 32. The third gear set 3125 may include a third drive gear and a third driven gear. The third drive gear is connected to the output end of the third drive motor 3122, and the third driven gear is connected to one end of the second transmission screw 3124. The third drive gear and the third driven gear mesh with each other, so that when the third drive motor 3122 drives the third drive gear to rotate, the third drive gear drives the third driven gear to rotate, which in turn causes the second transmission screw 3124 to rotate. This allows the second screw nut seat 3123 to move axially along the second transmission screw 3124, thereby moving the first connecting plate 32. In addition, the second gear set 3115 may also include a fourth connecting gear, which can be installed on the side of the second mounting housing 3121. The fourth connecting gear meshes with both the third drive gear and the third driven gear. The third drive motor 3122 may be a servo motor, which has high adjustment accuracy and forward and reverse rotation functions.

[0058] Understandably, the first connecting part 3131 is connected to the sliding plate 3116, and the second connecting part 3132 is connected to the second mounting shell 3121, thereby driving the height adjustment component 312 to move back and forth. Since the height adjustment component 312 is connected to the first connecting plate 32, and the welding torch 33 is fixed on the first connecting plate 32, it drives the welding torch 33 to move along the weld axial direction. The height adjustment component 312 is installed radially along the pipe 100, and its structure can be similar to or the same as that of the front and rear adjustment component 311. It can drive the first connecting plate 32 to move up and down, and finally drive the welding torch 33 to move radially in the pipe 100, thereby adjusting the height of the welding torch 33 in the weld.

[0059] like Figures 11 to 13 As shown, in some embodiments, the wire feeding drive assembly 43 includes a fourth drive motor 431, a third mounting housing 432, a wire feeding wheel 433, a fourth gear set 434, a wire clamping rod 435, and a wire clamping bearing 436. The fourth drive motor 431 is mounted on the side of the third mounting housing 432, and the fourth drive motor 431 is connected to the wire feeding wheel 433 through the fourth gear set 434. Figure 13 As shown, the fourth gear set 434 can be a bevel gear combination.

[0060] The wire clamping rod 435 is mounted on the third mounting housing 432, the wire clamping bearing 436 is mounted on the wire clamping rod 435, and the wire clamping bearing 436 is arranged opposite to the circumferential surface of the wire feeding wheel 433.

[0061] like Figure 13 As shown, the circumferential surface of the wire feeding wheel 433 is provided with a V-groove 4331, and the welding wire clamping bearing 436 is arranged opposite to the V-groove 4331.

[0062] The wire feeding drive assembly 43 also includes a motor mounting base 437, on which the fourth drive motor 431 is mounted. The motor mounting base 437 is detachably mounted on the side of the third mounting housing 432. The wire feeding drive assembly 43 also includes a tightening bolt 438, which passes through the motor mounting base 437 to abut against one end of the welding wire clamping rod 435, thereby adjusting the contact state between the welding wire clamping bearing 436 and the wire feeding wheel 433. The fourth drive motor 431 can be a servo motor, which has high adjustment precision and forward / reverse rotation functions.

[0063] Furthermore, a first wire feeding tube connector 439 and a second wire feeding tube connector 4310 may be respectively provided on both sides of the circumference of the wire feeding wheel 433. The first wire feeding tube connector 439 is connected to the wire spool 421, and the second wire feeding tube connector 4310 is connected to the wire feeding rod 35, which can be connected through a conveying hose.

[0064] When the nuclear power plant pipeline welding equipment is working, the welding wire in the wire spool 421 passes sequentially through the first wire feeding tube joint 439, the circumferential side of the wire feeding wheel 433 (or the V-groove 4331 of the wire feeding wheel 433), and the second wire feeding tube joint 4310. The wire clamping rod 435 is pressed by the tightening bolt 438, thereby clamping the welding wire by the wire clamping bearing 436, which increases the friction between the welding wire and the wire feeding wheel 433 and the wire clamping bearing 436. The fourth drive motor 431 drives the wire feeding wheel 433 to rotate through the bevel gear set. Under the action of friction, the welding wire is continuously fed to the tungsten end of the welding gun head of the welding gun 33.

[0065] Nuclear power plant pipeline welding equipment is relatively compact and suitable for situations where the pipeline to be welded is very close to adjacent pipelines or equipment. It can also weld pipelines in areas inaccessible to manual welding, solving welding problems in confined spaces. Compared to manual welding, it offers higher welding efficiency, more consistent quality, and lower skill requirements for operators. Furthermore, it can replace manual welding, avoiding radiation exposure for workers.

[0066] It is understood that the above embodiments only illustrate preferred embodiments of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present utility model patent. It should be noted that for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present utility model, all of which fall within the protection scope of the present utility model. Therefore, all equivalent transformations and modifications made with respect to the scope of the claims of the present utility model should fall within the scope of the claims of the present utility model.

Claims

1. A nuclear power plant pipeline welding equipment, characterized in that, include: A circular guide rail (10) is used for mounting onto a pipe; A moving mechanism (20) is movably mounted on the circular guide rail (10); A welding torch device (30) includes a welding torch position adjustment mechanism (31), a first connecting plate (32), a welding torch (33), a molten pool camera (34), and a wire feeder (35). The welding torch position adjustment mechanism (31) is connected to the moving mechanism (20), and the first connecting plate (32) is connected to the welding torch position adjustment mechanism (31). The welding torch (33), the molten pool camera (34), and the wire feeder (35) are mounted on the same side of the first connecting plate (32), and the welding torch (33), the molten pool camera (34), and the wire feeder (35) are spaced apart. The wire feeder (35) is mounted on one side of the welding torch head of the welding torch (33) to guide the welding wire to the tungsten end of the welding torch head of the welding torch (33). The wire feeding mechanism (40) includes a second connecting plate (41), a wire spool assembly (42), and a wire feeding drive assembly (43). The wire spool assembly (42) includes a wire spool (421) and a wire spool carriage (422) connected to the wire spool (421). The wire spool carriage (422) is movably mounted on the circular guide rail (10). The second connecting plate (41) connects the wire spool carriage (422) and the moving mechanism (20). The wire feeding drive assembly (43) is mounted on the second connecting plate (41) and is used to feed the welding wire on the wire spool (421) to the wire feeding rod (35).

2. The nuclear power plant pipeline welding equipment according to claim 1, characterized in that, The circular guide rail (10) includes a first semicircular guide rail (11) and a second semicircular guide rail (12) that are detachably connected.

3. The nuclear power plant pipeline welding equipment according to claim 1, characterized in that, The inner side of the circular guide rail (10) is provided with several adjustable feet (13) along its circumference.

4. The nuclear power plant pipeline welding equipment according to claim 1, characterized in that, The inner surface of the circular guide rail (10) has stepped surfaces (10a) formed at both ends along its axial direction. The moving mechanism (20) includes a first drive motor (21), a housing (22), a moving wheel (23), and a guide assembly (24). The first drive motor (21) is installed on the outside of the housing (22), and the moving wheel (23) is installed inside the housing (22) and the moving wheel (23) contacts the outer surface of the circular guide rail (10). The first drive motor (21) is connected to the moving wheel (23) through a first gear set (25). The number of guide components (24) is two, and the two guide components (24) are symmetrically installed on the left and right sides of the housing (22) along the moving direction. Each guide component (24) includes a first fixing block (241), a second fixing block (242), a connecting block (243), a slider (244), a guide wheel (245), and an adjusting bolt (246). The first fixing block (241) and the second fixing block (242) are arranged at intervals relative to each other. The connecting block (243) connects the first fixing block (241) to the second fixing block (242). The upper part of the first fixed block (241) and the second fixed block (242) is provided. The slider (244) is movably installed between the first fixed block (241) and the second fixed block (242). The guide wheel (245) is installed on the side of the slider (244) away from the connecting block (243) and the guide wheel (245) is in contact with the stepped surface (10a). The adjusting bolt (246) passes through the connecting block (243) and is connected to the slider (244).

5. The nuclear power plant pipeline welding equipment according to claim 4, characterized in that, The housing (22) has a first side and a second side along the moving direction, and the first drive motor (21) is mounted on the first side of the housing (22); The moving mechanism (20) further includes a bending plate (26), which includes a first plate (261) and a second plate (262). The first plate (261) is connected to the upper surface of the outer shell (22), and the second plate (262) is located on the second side of the outer shell (22). The welding torch position adjustment mechanism (31) includes a front-to-back adjustment assembly (311), a height adjustment assembly (312), and an L-shaped plate (313). The front-to-back adjustment assembly (311) includes a first mounting shell (3111), a second drive motor (3112), a first lead screw nut seat (3113), a first transmission lead screw (3114), a second gear set (3115), and a sliding plate (3116). The second drive motor (3112) and the first transmission lead screw (3114) are mounted on the first gear set (3115). Inside the first mounting housing (3111), the second drive motor (3112) is connected to the first transmission screw (3114) through the second gear set (3115). The first mounting housing (3111) is provided with a slide rail (3117). The slide plate (3116) is movably mounted on the slide rail (3117). The first transmission screw (3114) passes through the first screw nut seat (3113). The first screw nut seat (3113) is connected to the slide plate (3116). The height adjustment assembly (312) includes a second mounting shell (3121), a third drive motor (3122), a second lead screw nut seat (3123), a second transmission lead screw (3124), and a third gear set (3125). The L-shaped plate (313) includes a vertically arranged first connecting part (3131) and a second connecting part (3132); the first connecting part (3131) is connected to the slide plate (3116), and the second connecting part (3132) is connected to the second mounting shell (3121). The third drive motor (3122) and the second transmission screw (3124) are installed in the second mounting housing (3121), and the third drive motor (3122) and the second transmission screw (3124) are connected by a third gear set (3125). The second transmission screw (3124) passes through the second screw nut seat (3123), and the second screw nut seat (3123) is connected to one end of the first connecting plate (32).

6. The nuclear power plant pipeline welding equipment according to claim 1, characterized in that, The wire feeding drive assembly (43) includes a fourth drive motor (431), a third mounting housing (432), a wire feeding wheel (433), a fourth gear set (434), a wire clamping rod (435), and a wire clamping bearing (436). The fourth drive motor (431) is mounted on the side of the third mounting housing (432), and the fourth drive motor (431) is connected to the wire feeding wheel (433) through the fourth gear set (434). The wire clamping rod (435) is mounted on the third mounting shell (432), the wire clamping bearing (436) is mounted on the wire clamping rod (435), and the wire clamping bearing (436) is arranged opposite to the circumferential surface of the wire feeding wheel (433).

7. The nuclear power plant pipeline welding equipment according to claim 6, characterized in that, The circumferential surface of the wire feeding wheel (433) is provided with a V-groove (4331), and the wire clamping bearing (436) is arranged opposite to the V-groove (4331).

8. The nuclear power plant pipeline welding equipment according to claim 7, characterized in that, The wire feeding drive assembly (43) further includes a motor mounting base (437), the fourth drive motor (431) is mounted on the motor mounting base (437), and the motor mounting base (437) is detachably mounted on the side of the third mounting shell (432); The wire feeding drive assembly (43) also includes a tensioning bolt (438), which is used to pass through the motor mounting base (437) to abut against one end of the wire clamping rod (435) to adjust the contact state between the wire clamping bearing (436) and the wire feeding wheel (433).

9. The nuclear power plant pipeline welding equipment according to claim 8, characterized in that, The wire feeding wheel (433) may be provided with a first wire feeding tube joint (439) and a second wire feeding tube joint (4310) on its circumferential sides respectively. The first wire feeding tube joint (439) is connected to the wire spool (421), and the second wire feeding tube joint (4310) is connected to the wire feeding rod (35).

10. The nuclear power plant pipeline welding equipment according to claim 1, characterized in that, The number of the molten pool cameras (34) is two, and the two molten pool cameras (34) are respectively located on the left and right sides of the welding torch (33).

Images