A kind of multi-pass pipe welding pressure testing device for stainless steel material

Abstract

The application provides a multi-pass pipe welding pressure testing device for stainless steel materials, which comprises a base, a single-chip microcomputer, a motor, a clamp, a fixed plate, a main drive motor and a movable plate. The single-chip microcomputer and the fixed plate are arranged on the base, and the main drive motor is arranged at the top end of the fixed plate. The movable plate is arranged on the output end of the main drive motor. The multi-pass pipe welding pressure testing device for stainless steel materials is matched with the base, the single-chip microcomputer, the motor, the clamp, the fixed plate, the main drive motor and the movable plate. The protective gas originally used for spraying into the split pipe in the welding process is recycled and used for the air tightness pressure testing of the welded weld, so that the energy saving and emission reduction purposes are achieved, and two devices with different functions are combined together.

Description

Technical Field

[0001] This invention relates to the technical field of steel pipe welding and pressure testing equipment, specifically to a welding and pressure testing device for multi-way pipes made of stainless steel. Background Technology

[0002] Traditional multi-channel steel pipes are typically assembled by welding multiple small copper tubes onto a main pipe. However, all welded steel pipes require airtight pressure testing. Pressure testing methods generally include gas testing and liquid testing. Therefore, workers have to unload the multi-channel steel pipe from the equipment and send it to an airtight testing facility, significantly impacting work efficiency and making it inconvenient for personnel. Summary of the Invention

[0003] (a) Technical problems to be solved

[0004] To address the shortcomings of existing technologies, this invention provides a welding and pressure testing device for multi-port pipes made of stainless steel.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, the present invention provides the following technical solution: a welding and pressure testing device for multi-port pipes made of stainless steel, comprising a base, a microcontroller, a motor, a clamp, a fixed plate, a main drive motor, and a movable plate. The microcontroller and the fixed plate are both mounted on the base, and the main drive motor is mounted on the top of the fixed plate. The movable plate is mounted on the output end of the main drive motor, the microcontroller is mounted on the movable plate, and the motor is mounted on the side of the movable plate. The clamp is mounted on the movable end of the motor, and a main pipe is mounted on the clamp. Multiple split pipes are mounted on the main pipe.

[0007] Preferably, the system further includes a mounting plate, a main telescopic rod, an external drive telescopic rod, and an internal drive telescopic rod. The mounting plate is disposed on the output end of the motor, and the main telescopic rod is disposed on the bottom end of the mounting plate. The external drive telescopic rod and the internal drive telescopic rod are disposed side by side on the movable end of the main telescopic rod. The internal drive telescopic rod is located inside the main conduit, and the external drive telescopic rod is located outside the main conduit.

[0008] Preferably, it further includes an annular slide seat, a secondary drive hinge seat, and a snap-fit ​​bracket. The annular slide seat is hinged to the outer drive telescopic rod via the secondary drive hinge seat, and the snap-fit ​​bracket is slidably fitted on the outside of the annular slide seat. The snap-fit ​​bracket is detachably snapped into the split tube.

[0009] Preferably, the working mechanism includes a welding gun, a rotary motor, a drive slider, a slide rail, and an automatic telescopic rod. The slide rail is mounted on top of the movable plate, and the drive slider is slidably fitted onto the inner side of the slide rail. The drive slider corresponds to the clamp, and the automatic telescopic rod is laterally mounted on the drive slider. The rotary motor is mounted on the movable end of the automatic telescopic rod, and the welding gun is mounted at the edge of the output end of the rotary motor. The nozzle of the welding gun corresponds to the connection point between the split tube and the main pipe within the annular slide rail seat.

[0010] Preferably, the working mechanism further includes an auxiliary telescopic rod, a gas injection device, and a jet head, wherein the gas injection device is mounted on the automatic telescopic rod. The auxiliary telescopic rod is located at the center of the output end of the rotating motor, and the jet head is located on the movable end of the auxiliary telescopic rod. The jet head communicates with the gas injection device and is adapted to the port of the split pipe.

[0011] Preferably, the device further includes a drive switch valve, a threaded rod, an umbrella frame, and a pressure detection mechanism. The drive switch valve is mounted on a snap-fit ​​bracket. One end of the threaded rod is threaded into the drive switch valve, and the other end passes through the snap-fit ​​bracket and extends into the interior of the split tube. The umbrella frame is mounted on the end of the threaded rod located inside the split tube. The pressure detection mechanism is located at the bottom of the umbrella frame.

[0012] Preferably, it further includes an upper electric telescopic rod and two guide piston heads, the upper electric telescopic rod being vertically mounted on the top of the mounting plate. The two guide piston heads are respectively mounted on the movable ends of the upper electric telescopic rod and the inner drive telescopic rod.

[0013] Preferably, it also includes a hood and a rubber scraper ring. The hood is fitted over the umbrella frame, and the rubber scraper ring is fitted over the bottom of the umbrella frame.

[0014] Preferably, the two guide piston heads correspond to the ports of the split tubes of the annular slide seat and the ports of the adjacent split tubes, respectively.

[0015] (III) Beneficial Effects

[0016] This invention provides a welding and pressure testing device for multi-port pipes made of stainless steel. It has the following features:

[0017] Beneficial effects:

[0018] 1. This welding and pressure testing device for multi-port pipes made of stainless steel utilizes a base, microcontroller, motor, clamps, fixing plate, main drive motor, and movable plate working together. This allows the invention to utilize a portion of the protective gas originally injected into the separate pipes during welding, which can then be recovered and used for pressure testing of the weld seam. This effectively achieves energy conservation and emission reduction, while also combining two devices that previously required different functions into one. Attached Figure Description

[0019] Figure 1 This is a first perspective view of the present invention;

[0020] Figure 2 This is a second perspective view of the present invention;

[0021] Figure 3 This is a third perspective view of the present invention;

[0022] Figure 4 This is the fourth perspective view of the present invention;

[0023] Figure 5 This is a perspective view of a first partial component of the present invention;

[0024] Figure 6 This is a perspective view of a second partial component of the present invention;

[0025] Figure 7 This is a perspective view of a third partial component of the present invention;

[0026] Figure 8 For the present invention Figure 4 Enlarged view of point A in the middle;

[0027] Figure 9 For the present invention Figure 6 Enlarged view of section B in the middle.

[0028] In the diagram: 1. Base, 2. Magnetic fixing seat, 3. Main telescopic rod, 4. Fixing plate, 5. Main drive motor, 6. Clamp, 7. Motor, 8. Movable plate, 9. Upper electric telescopic rod, 10. Mounting plate, 11. Umbrella frame, 12. Main pipe, 13. Split pipe, 14. Welding gun, 15. Rotary motor, 16. Gas injection device, 17. Working mechanism, 18. Drive slider, 19. Automatic telescopic rod, 20. Slide frame, 21. Microcontroller, 22. External drive telescopic rod, 23. Internal drive telescopic rod, 24. Annular slide seat, 25. Clip-on frame, 26. Drive switch valve, 27. Jet head, 28. Secondary drive hinge seat, 29. Guide piston head, 30. Air pressure detection mechanism, 31. Auxiliary telescopic rod, 32. Threaded rod, 33. Rubber scraper ring, 34. Cover. Detailed Implementation

[0029] This invention provides a welding and pressure testing device for multi-port pipes made of stainless steel, such as... Figure 1-9As shown, the system includes a base 1, a microcontroller 21, a motor 7, a clamp 6, a fixed plate 4, a main drive motor 5, and a movable plate 8. The microcontroller 21 and the fixed plate 4 are both mounted on the base 1, and the main drive motor 5 is mounted on the top of the fixed plate 4. The movable plate 8 is mounted on the output end of the main drive motor 5, the microcontroller 21 is mounted on the movable plate 8, and the motor 7 is mounted on the side of the movable plate 8. The clamp 6 is mounted on the movable end of the motor 7, and a main conduit 12 is mounted on the clamp 6. Multiple split pipes 13 are mounted on the main conduit 12.

[0030] It also includes a mounting plate 10, a main telescopic rod 3, an external drive telescopic rod 22, and an internal drive telescopic rod 23. The mounting plate 10 is mounted on the output end of the motor 7, and the main telescopic rod 3 is mounted on the bottom end of the mounting plate 10. The external drive telescopic rod 22 and the internal drive telescopic rod 23 are arranged side by side on the movable end of the main telescopic rod 3. The internal drive telescopic rod 23 is located inside the main conduit 12, and the external drive telescopic rod 22 is located outside the main conduit 12.

[0031] It also includes an annular slide seat 24, a secondary drive hinge seat 28, and a snap-fit ​​bracket 25. The annular slide seat 24 is hinged to the external drive telescopic rod 22 via the secondary drive hinge seat 28, and the snap-fit ​​bracket 25 is slidably fitted on the outside of the annular slide seat 24. The snap-fit ​​bracket 25 is detachably snap-fitted to the split tube 13.

[0032] The working mechanism 17 includes a welding gun 14, a rotary motor 15, a drive slider 18, a slide rail 20, and an automatic telescopic rod 19. The slide rail 20 is located on top of the movable plate 8, and the drive slider 18 is slidably fitted on the inner side of the slide rail 20. The drive slider 18 corresponds to the clamp 6, and the automatic telescopic rod 19 is laterally arranged on the drive slider 18. The rotary motor 15 is located on the movable end of the automatic telescopic rod 19, and the welding gun 14 is located at the edge of the output end of the rotary motor 15. The nozzle of the welding gun 14 corresponds to the connection between the split tube 13 and the main pipe 12 within the annular slide rail seat 24.

[0033] The working mechanism 17 also includes an auxiliary telescopic rod 31, a gas injection device 16, and a jet nozzle 27. The gas injection device 16 is mounted on the automatic telescopic rod 19. The auxiliary telescopic rod 31 is located at the center of the output end of the rotating motor 15, and the jet nozzle 27 is located on the movable end of the auxiliary telescopic rod 31. The jet nozzle 27 communicates with the gas injection device 16 and is adapted to the port of the split pipe 13.

[0034] It also includes a drive switch valve 26, a threaded rod 32, an umbrella frame 11, and a pressure detection mechanism 30. The drive switch valve 26 is mounted on the snap-fit ​​bracket 25. One end of the threaded rod 32 is threaded into the drive switch valve 26, and the other end passes through the snap-fit ​​bracket 25 and extends into the split tube 13. The umbrella frame 11 is mounted on the end of the threaded rod 32 located inside the split tube 13. The pressure detection mechanism 30 is located at the bottom of the umbrella frame 11.

[0035] It also includes an upper electric telescopic rod 9 and two guide piston heads 29, with the upper electric telescopic rod 9 vertically mounted on the top of the mounting plate 10. The two guide piston heads 29 are respectively mounted on the movable ends of the upper electric telescopic rod 9 and the inner drive telescopic rod 23.

[0036] It also includes a hood 34 and a rubber scraper ring 33. The hood 34 is fitted onto the umbrella frame 11, and the rubber scraper ring 33 is fitted onto the bottom of the umbrella frame 11.

[0037] The two guide piston heads 29 correspond to the ports of the split tube 13 of the annular slide seat 24 and the adjacent split tube 13, respectively.

[0038] Working principle: In use, firstly, the main pipe 12 is clamped onto the fixture 6, then the split pipe 13 is inserted into the main pipe 12. Next, the drive slider 18 and the automatic telescopic rod 19 are controlled to cooperate, so that the nozzle of the welding gun 14 contacts the connection between the split pipe 13 and the main pipe 12. At the same time, the jet nozzle 27 is inserted into the port of the split pipe 13, and the gas jet device 16 is controlled to spray out protective inert gas. Then, normal welding is carried out. During the welding process, the rotating motor 15 is controlled to rotate, so that the welding gun 14 can effectively weld and fix the connection between the split pipe 13 and the main pipe 12.

[0039] When welding the next split tube 13, the operator first controls the main telescopic rod 3 and swings the annular slide seat 24 to place the annular slide seat 24 onto the split tube 13 to be welded. Then, the push clamping bracket 25 slides on the annular slide seat 24 and clamps onto the previous split tube 13. Then, the main drive motor 5 works while the magnetic fixing seat 2 is de-energized, causing the movable plate 8 and the main telescopic rod 3 to fold together to a position parallel to the ground. At this time, the drive switch valve 26 on the clamping bracket 25 releases the threaded rod 32. At this time, the umbrella frame 11 retracts under gravity, and the threaded rod 32 moves down. In this way, it can be ensured that the rubber scraper ring 33 will not contact the inner wall of the split tube 13 during the movement, preventing the impurities originally adsorbed on the inner wall of the split tube 13 from being pushed into the main pipe 12.

[0040] Next, the movable plate 8 is folded back, and the internal drive telescopic rods 23 and 9 are extended to align the two guide piston heads 29 with the through holes of the two split tubes 13 containing the jet nozzle 27 and the umbrella frame 11. Due to the oblique guidance of the guide piston heads 29, after welding is completed, the gas injection device 16 is controlled to continue supplying gas, thereby filling the two split tubes 13 and the main pipe 12 between the two split tubes 13 with inert gas. At this time, the drive switch valve 26 is closed, and the position of the threaded rod 32 is locked. Then, the internal drive telescopic rod 23 continues to rise, compressing the inert gas. The gas pressure detection mechanism 30 detects whether there is a change in the gas pressure inside the pipe to determine whether there is a gap in the weld. If there is no change, the control drive valve 26 is opened, simultaneously moving the threaded rod 32. Compressed gas will be ejected from the split tube 13, and during the ejection process, the cover 34 will be lifted, thereby forcing the rubber scraper ring 33 to scrape the inner wall of the split tube 13 outward, thus cleaning the inner wall of the split tube 13. This continues until the umbrella frame 11 is completely detached from the split tube 13, and then the personnel proceed to the welding operation of the next split tube 13.

[0041] In summary, this welding and pressure testing device for multi-port pipes made of stainless steel utilizes a base 1, a microcontroller 21, a motor 7, a clamp 6, a fixing plate 4, a main drive motor 5, and a movable plate 8 in a coordinated manner. This allows the invention to utilize a portion of the protective gas originally injected into the split pipe 13 during welding, which can then be recovered and used for pressure testing of the weld seam. This effectively achieves energy conservation and emission reduction, while also combining two devices that previously required different functions into one.

Claims

1. A welding and pressure testing device for multi-port pipes made of stainless steel, characterized in that: The device includes a base (1), a microcontroller (21), a motor (7), a clamp (6), a fixed plate (4), a main drive motor (5), and a movable plate (8). The microcontroller (21) and the fixed plate (4) are both mounted on the base (1). The main drive motor (5) is mounted on the top of the fixed plate (4). The movable plate (8) is mounted on the output end of the main drive motor (5). The microcontroller (21) is mounted on the movable plate (8). The motor (7) is mounted on the side of the movable plate (8). The clamp (6) is mounted on the movable end of the motor (7). The clamp (6) is equipped with a main pipe (12). The main pipe (12) is equipped with multiple split pipes (13). It also includes a mounting plate (10), a main telescopic rod (3), an external drive telescopic rod (22), and an internal drive telescopic rod (23). The mounting plate (10) is set on the output end of the motor (7). The main telescopic rod (3) is set on the bottom end of the mounting plate (10). The external drive telescopic rod (22) and the internal drive telescopic rod (23) are set side by side on the movable end of the main telescopic rod (3). The internal drive telescopic rod (23) is located inside the main pipe (12), and the external drive telescopic rod (22) is located outside the main pipe (12). It also includes an annular slide seat (24), a secondary drive hinge seat (28) and a snap-fit ​​bracket (25). The annular slide seat (24) is hinged to the external drive telescopic rod (22) through the secondary drive hinge seat (28). The snap-fit ​​bracket (25) is slidably fitted on the outside of the annular slide seat (24). The snap-fit ​​bracket (25) is detachably snap-fitted to the split tube (13). It also includes an upper electric telescopic rod (9) and two guide piston heads (29), the upper electric telescopic rod (9) being vertically mounted on the top of the mounting plate (10), and the two guide piston heads (29) being respectively mounted on the movable ends of the upper electric telescopic rod (9) and the inner drive telescopic rod (23); It also includes a hood (34) and a rubber scraper ring (33), the hood (34) being fitted onto the umbrella frame (11) and the rubber scraper ring (33) being fitted onto the bottom of the umbrella frame (11); The two guide piston heads (29) correspond to the ports of the split tube (13) and the adjacent split tube (13) of the annular slide seat (24), respectively.

2. The welding and pressure testing device for multi-port pipes made of stainless steel according to claim 1, characterized in that: It also includes a working mechanism (17), which includes a welding gun (14), a rotating motor (15), a drive slider (18), a slide frame (20), and an automatic telescopic rod (19). The slide frame (20) is set on the top of the movable plate (8). The drive slider (18) is slidably fitted on the inner side of the slide frame (20). The drive slider (18) corresponds to the clamp (6). The automatic telescopic rod (19) is set laterally on the drive slider (18). The rotating motor (15) is set on the movable end of the automatic telescopic rod (19). The welding gun (14) is set at the edge of the output end of the rotating motor (15). The nozzle of the welding gun (14) corresponds to the connection between the split tube (13) and the main pipe (12) in the annular slide seat (24).

3. The welding and pressure testing device for multi-port pipes made of stainless steel according to claim 2, characterized in that: The working mechanism (17) also includes an auxiliary telescopic rod (31), a gas injection device (16) and a jet head (27). The gas injection device (16) is mounted on the automatic telescopic rod (19). The auxiliary telescopic rod (31) is mounted at the center of the output end of the rotating motor (15). The jet head (27) is mounted on the movable end of the auxiliary telescopic rod (31). The jet head (27) is connected to the gas injection device (16) and is adapted to the port of the split pipe (13).

4. The welding and pressure testing device for multi-port pipes made of stainless steel according to claim 3, characterized in that: It also includes a drive switch valve (26), a threaded rod (32), an umbrella frame (11), and a pressure detection mechanism (30). The drive switch valve (26) is mounted on a snap-fit ​​bracket (25). One end of the threaded rod (32) is threaded into the drive switch valve (26), and the other end passes through the snap-fit ​​bracket (25) and extends into the split tube (13). The umbrella frame (11) is mounted on the end of the threaded rod (32) located inside the split tube (13). The pressure detection mechanism (30) is mounted at the bottom of the umbrella frame (11).

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