Device for performing off-line withstand voltage test on micropore pipe for contact tube

Abstract

The utility model discloses a device for carrying out an off-line withstand voltage test on a micropore pipe for a contact tube, and belongs to the technical field of micropore pipe test. The device mainly comprises a control box; the testing assembly is provided with a testing box for storing the microporous pipe, a hopper for storing a liquid medium and plugs for plugging the two ends of the microporous pipe; the collecting assembly comprises a supporting frame installed in the testing box, springs are installed on the supporting frame, guide rods penetrate through the springs, and a supporting pipe is arranged between the two sets of guide rods; a supporting plate is arranged in the test box, and a first filter screen and a second filter screen are hinged to the supporting plate; and rotating parts are mounted on the first filter screen and the second filter screen. According to the device for carrying out the off-line voltage withstanding test on the micropore pipe for the contact tube, the filter screen which is horizontally arranged can be used for bearing splinters to realize preliminary collection, the pull rod is pulled to enable the filter screen to incline, the splinters are concentrated at the two ends under the action of gravity and are matched with the collection box through the rotating part and the through groove of the filter screen, and the splinters fall into the box through the groove.

Description

A device for offline withstand voltage testing of conductive nozzles using microporous tubes. Technical Field

[0001] This application relates to the field of microporous tube testing technology, specifically a device for offline withstand voltage testing of microporous tubes for conductive nozzles. Background Technology

[0002] In modern manufacturing, where welding technology is widely used, the contact tip is a key welding component, and its performance directly affects welding quality and efficiency. The contact tip uses a microporous tube as its core component, undertaking the important task of conveying the welding wire and conducting current during the welding process. Since welding operations are typically carried out in harsh environments with high temperatures and high currents, the microporous tube must possess excellent pressure resistance to ensure stable welding operations.

[0003] Currently, the production scale of micro-perforated tubes for conductive nozzles is continuously expanding, and as welding technology develops towards higher precision and efficiency, the quality control of micro-perforated tubes is becoming increasingly stringent. In actual use, welding wire passes through the micro-perforated tube at high speed, while the outside must withstand the high temperature generated by the welding arc and the pressure of the surrounding environment. If the pressure resistance of the micro-perforated tube is insufficient, deformation or cracking may occur during the welding process. This will not only cause welding interruption and affect the production schedule, but may also lead to a serious decline in welding quality, resulting in defects such as incomplete welds and weld failures.

[0004] Currently, when performing pressure tests on microporous tubes used for conductive nozzles, the microporous tube is fixed inside a test chamber, and both ends are sealed with plugs. Then, an air compressor and a pneumatic-hydraulic booster pump are started. The air compressor supplies air to the pneumatic-hydraulic booster pump's chamber, and the booster pump draws liquid from the medium tank and pressurizes it to supply liquid for the high-pressure test of the microporous tube. The operator adjusts the inlet pressure regulating valve to increase the air pressure and enhance the pressurization effect. Two pressure gauges on the control box monitor the air pressure and hydraulic pressure respectively, until the microporous tube ruptures, facilitating the acquisition of the highest burst pressure.

[0005] When a microporous tube ruptures under continuously increasing pressure, it breaks into fragments of varying sizes and irregular shapes. The impact of the rupture causes these fragments to scatter in all directions, eventually landing in various corners of the test chamber, making subsequent collection difficult. Therefore, it is necessary to provide a device for offline withstand voltage testing of microporous tubes used for conductive nozzles to solve this problem.

[0006] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Summary of the Invention

[0007] Based on the aforementioned problems in the existing technology, the problem to be solved by this application is to provide an apparatus for offline withstand voltage testing of a microporous tube for a conductive nozzle, which solves the problem that after the microporous tube breaks during withstand voltage testing, it forms fragments of various sizes and shapes that scatter in all directions due to impact, increasing the difficulty of collection.

[0008] The technical solution adopted by this application to solve its technical problem is: an apparatus for offline withstand voltage testing of a microporous tube for a conductive nozzle, comprising a control box, the control box having a gas-liquid booster pump for pressurizing the test liquid medium and a medium tank for storing the liquid medium; a test assembly mounted on the control box, the test assembly having a test tank for storing the microporous tube and a hopper for storing the liquid medium, the liquid outlet of the gas-liquid booster pump being connected to the test tank via a high-pressure liquid pipe; one end of the high-pressure liquid pipe being connected to a first plug sealing one end of the microporous tube and a second plug sealing the other end of the microporous tube. A collection component is installed inside the test chamber. The collection component includes a support frame installed on the inner wall of the test chamber, multiple sets of springs installed on the support frame, a guide rod penetrating the center of each spring, and a support tube installed between two sets of guide rods. A support plate is provided inside the test chamber. A first filter screen is hinged to the bottom surface of the support plate near the right side, and a second filter screen is hinged to the bottom surface of the support plate near the left side. Both the first and second filter screens are equipped with rotating parts, which are arc-shaped. An internal groove is formed on the inner wall of the test chamber, and a pull rod is installed on the support plate.

[0009] Furthermore, a first through groove is provided on the rotating part, and a second through groove is provided on both sides of the first filter screen and the second filter screen, and a collection box is installed on both sides of the test box.

[0010] Furthermore, the collection box is covered with a cover plate.

[0011] Furthermore, the gas-liquid booster pump has a compressed air inlet, and the air chamber of the gas-liquid booster pump is connected to an external air compressor through the compressed air inlet. An inlet pressure regulating valve and an inlet pressure gauge are installed on the connecting pipeline between the gas-liquid booster pump and the air compressor.

[0012] The bottom of the test chamber is connected to the medium tank through a first reflux pipe, and the medium tank is connected to the liquid inlet of the gas-liquid booster pump through a liquid inlet pipe.

[0013] The high-pressure liquid pipe is equipped with a high-pressure shut-off valve and an outlet high-pressure gauge, both of which are mounted on the control box.

[0014] Furthermore, a fixed seat is installed on one end of the inner wall of the test box, and two sets of guide rods are installed on the fixed seat. A second plug is slidably installed between the two sets of guide rods. A screw is threadedly connected to the fixed seat, and the second plug is bearing-connected to one end of the screw.

[0015] Furthermore, a rotating handle is installed on one end of the screw that passes through the test box.

[0016] Furthermore, a switch is provided on the control box.

[0017] The beneficial effects of this application are: This application provides a device for offline withstand voltage testing of a microporous tube for a conductive nozzle. It enables the initial collection of fragments by using a horizontally placed filter screen. During cleaning, pulling the lever tilts the filter screen, and the fragments are concentrated at both ends under gravity. They then cooperate with the collection box through the rotating part and the through groove of the filter screen, allowing the fragments to fall into the box through the groove, further improving the collection effect.

[0018] In addition to the purposes, features, and advantages described above, this application has other purposes, features, and advantages. A further detailed description of this application will be provided below with reference to the figures. Attached Figure Description

[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.

[0020] In the attached diagram:

[0021] Figure 1 is an overall schematic diagram of a device for offline withstand voltage testing of a microporous tube for a conductive nozzle according to this application;

[0022] Figure 2 is an exploded view of Figure 1;

[0023] Figure 3 is a schematic diagram of the collection component structure in Figure 2;

[0024] Figure 4 is a partial structural schematic diagram of Figure 2;

[0025] Figure 5 is a schematic diagram of the test component structure shown in Figure 4;

[0026] The following are the labeling elements in the figure:

[0027] 1. Control Components; 11. Control Box; 12. Inlet Pressure Gauge; 13. Outlet High Pressure Gauge; 14. Switch; 15. Inlet Pressure Regulating Valve; 17. High Pressure Shut-off Valve; 18. Gas-Liquid Booster Pump; 19. High Pressure Liquid Pipe; 110. Liquid Inlet Pipe; 112. Medium Tank; 113. First Return Pipe; 114. Pressure Relief Return Pipe; 2. Test Components; 21. Support Frame; 22. Test Box; 23. Visible Explosion-proof Cover; 24. First Plug; 25. Fixing Base; 26. Screw; 27. Guide Rod; 28. Second Plug; 3. Collection Components; 31. Support Plate; 32. First Filter Screen; 33. Second Filter Screen; 34. Pull Rod; 35. Rotating Part; 37. Collection Box; 38. Support Frame; 39. Spring; 310. Guide Rod; 311. Support Pipe; 312. Inner Groove. Detailed Implementation

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0030] As shown in Figures 1-5, this application provides an apparatus for offline withstand pressure testing of a microporous tube for a conductive nozzle, including a control component 1. The control component 1 includes a control box 11, and a gas-liquid booster pump 18 is provided inside the control box 11. The gas-liquid booster pump 18 has a compressed air inlet, and the air chamber of the gas-liquid booster pump 18 is connected to an external air compressor (not shown in the figure) through the compressed air inlet. An inlet pressure regulating valve 15 and an inlet pressure gauge 12 are provided on the connecting pipeline between the gas-liquid booster pump 18 and the air compressor. Both the inlet pressure regulating valve 15 and the inlet pressure gauge 12 are installed on the control box 11.

[0031] A test assembly 2 is provided on one side of the control box 11. The test assembly 2 includes a support frame 21 provided on one side of the control box 11, and a test box 22 is fixedly installed on the support frame 21. The test box 22 is used to place the microporous tube to be tested, and a hopper (not shown in the figure) is connected to the bottom of the test box 22. The hopper is suitable for storing liquid media.

[0032] A medium tank 112 is provided at the lower end of the test chamber 22. The medium tank 112 contains liquid medium. The bottom of the test chamber 22 is connected to the medium tank 112 through a first return pipe 113. The medium tank 112 is connected to the liquid inlet of the gas-liquid booster pump 18 through a liquid inlet pipe 110. The liquid outlet of the gas-liquid booster pump 18 is connected to the test chamber 22 through a high-pressure liquid pipe 19. A pressure relief return pipe 114 is connected to the high-pressure liquid pipe 19. The pressure relief return pipe 114 is connected to the medium tank 112.

[0033] Furthermore, a high-pressure shut-off valve 17 and an outlet high-pressure gauge 13 are installed on the high-pressure liquid pipe 19. Both the high-pressure shut-off valve 17 and the outlet high-pressure gauge 13 are installed on the control box 11. A high-pressure relief valve (not shown in the figure) is installed on the pressure relief return pipe 114.

[0034] Meanwhile, one end of the high-pressure liquid pipe 19 extends into the test chamber 22, and a first plug 24 is connected to one end of the high-pressure liquid pipe 19. A fixing seat 25 is fixedly installed on one end of the inner wall of the test chamber 22, and two sets of guide rods 27 are fixedly installed on the fixing seat 25. A second plug 28 is slidably installed between the two sets of guide rods 27. At the same time, a screw 26 is threadedly connected to the fixing seat 25. One end of the screw 26 is connected to the bearing of the second plug 28, and the other end of the screw 26 passes through the test chamber 22.

[0035] In this application, a rotating handle can be fixedly installed on one end of the screw 26 that passes through the test box 22. The rotating handle is suitable for applying torque to the screw 26 to drive the second plug 28 to slide along the straight direction of the two sets of screws 26, so as to move closer to or away from the first plug 24, and thus to seal both ends of the microporous tube. The contact parts of the first plug 24 and the second plug 28 with the tube are made of silicone rubber or fluororubber.

[0036] Meanwhile, a switch 14 is provided on the control box 11. The switch 14 is used to control the start of the gas-liquid booster pump 18. A visible explosion-proof cover 23 is hinged on the test box 22. The visible explosion-proof cover 23 is suitable for sealing the top of the test box 22 to prevent the fragments from flying everywhere after the microporous tube pressure test is broken.

[0037] Before the test begins, the hopper connected to the bottom of the test chamber 22 is pre-filled with liquid medium, and the medium tank 112 is also filled with liquid medium. This liquid medium will serve as the pressure transmission medium for the subsequent pressure resistance test of the microporous tube.

[0038] Then, one end of the tube to be tested is installed on the plug of the high-pressure liquid tube 19 interface. Then, by rotating the rotating handle installed on one end of the screw 26 through the test box 22, torque is applied to the screw 26. Under the action of the rotating handle, the rotation of the screw 26 is converted into the sliding of the second plug 28 along the straight direction of the two sets of guide rods 27, so that the second plug 28 moves closer to or away from the first plug 24, thereby sealing both ends of the microporous tube to be tested. Then, the visible explosion-proof cover 23 hinged on the test box 22 is closed.

[0039] At this time, the air compressor is started, and compressed air is input into the air chamber of the gas-liquid booster pump 18 through the compressed air inlet. Simultaneously, the corresponding start switch 14 on the control box 11 is turned on to start the gas-liquid booster pump 18. After the gas-liquid booster pump 18 starts, it draws liquid medium from the medium tank 112 through the liquid inlet pipe 110. Inside the gas-liquid booster pump 18, the compressed air input from the air compressor drives the internal piston and other components to move, applying pressure to the drawn-in liquid medium, providing a high-pressure liquid medium for subsequent high-pressure testing of the microporous tube.

[0040] The operator gradually increases the compressed air pressure entering the air chamber of the gas-liquid booster pump 18 by adjusting the inlet pressure regulating valve 15 installed on the control box 11. As the compressed air pressure increases, the boosting effect of the gas-liquid booster pump 18 on the liquid medium is enhanced, and the pressure of the liquid medium output from the high-pressure liquid pipe 19 to the microporous pipe gradually increases accordingly.

[0041] During this process, the inlet pressure gauge 12 installed on the control box 11 is used to monitor the pressure of the compressed air inlet, and the outlet high pressure gauge 13 displays the pressure of the liquid medium entering the microporous tube in real time. When the pressure reaches a certain level, it continues until the microporous tube ruptures. When the microporous tube ruptures, the pressure is released instantly, one needle returns to zero, and the other needle stays at the highest pressure data at the time of pressure release, making it convenient for operators to accurately obtain the highest pressure at the moment of rupture.

[0042] When a test cycle ends, i.e., after the microporous tube ruptures and the test is completed, a pressure relief operation is required. Open the high-pressure relief valve on the pressure relief return pipe 114. At this time, the high-pressure liquid medium in the high-pressure liquid pipe 19 flows back to the medium tank 112 through the pressure relief return pipe 114. This process releases the pressure of the gas-liquid booster pump 18 and the high-pressure liquid medium in the high-pressure liquid pipe 19, restoring the system to normal pressure. Under normal operating conditions, the high-pressure relief valve is closed to ensure that the high-pressure liquid medium does not leak during the test.

[0043] After the test, the first return pipe 113 at the bottom of the test chamber 22 comes into play, and the remaining liquid medium in the test chamber 22 flows back to the medium tank 112 through the first return pipe 113. At this point, the entire test process is completed, and the liquid medium returns to the medium tank 112 to prepare for the next test. At the same time, the visible explosion-proof cover 23 is opened, the broken microporous tube is taken out, and the inside of the test chamber 22 is cleaned, so that the next round of pressure resistance test of the pipe fitting can be carried out.

[0044] To facilitate the collection of microporous tube fragments inside the test chamber 22, as shown in Figures 3 and 4, a collection assembly 3 is installed inside the test chamber 22. The collection assembly 3 includes a support frame 38 fixedly installed on the inner wall of the test chamber 22, and multiple sets of springs 39 are fixedly installed on the support frame 38. A guide rod 310 is installed through the center of the spring 39, and a support tube 311 is fixedly installed between the two sets of horizontally arranged guide rods 310 (refer to Figure 3). The spring 39 is suitable for supporting the support tube 311.

[0045] Furthermore, a support plate 31 is provided inside the test chamber 22, and a first filter screen 32 is hinged to the bottom surface of the support plate 31 near the right side, while a second filter screen 33 is hinged to the bottom surface of the support plate 31 near the left side. The first filter screen 32 and the second filter screen 33 are suitable for receiving microporous tube fragments. It should be noted that the first filter screen 32 and the second filter screen 33 are initially placed horizontally on the support tube 311, and the support tube 311 supports the first filter screen 32 and the second filter screen 33 under the action of the spring 39.

[0046] A rotating part 35 is fixedly installed at the far ends of the first filter screen 32 and the second filter screen 33. The rotating part 35 is arc-shaped. At the same time, an inner groove 312 adapted to the width of the rotating part 35 is opened on the inner wall of the test chamber 22. The inner groove 312 is suitable for providing rotation space for the rotating part 35. A pull rod 34 is fixedly installed on the support plate 31. The pull rod 34 is suitable for pulling the support plate 31 upward to drive the far ends of the first filter screen 32 and the second filter screen 33 to move upward. At this time, the rotating part 35 rotates in the inner groove 312, and the first filter screen 32 and the second filter screen 33 are inclined downward at both ends. At this time, the microporous tube fragments accumulated on the first filter screen 32 and the second filter screen 33 can be concentrated and collected at both ends of the first filter screen 32 and the second filter screen 33.

[0047] Furthermore, a first through groove (not shown in the figure) is provided on the rotating part 35, and a second through groove (not shown in the figure) is provided on both sides of the first filter screen 32 and the second filter screen 33. A collection box 37 is connected and installed on both sides of the test box 22. The collection box 37 is suitable for collecting the microporous tube fragments that have been discharged through the through grooves on the first filter screen 32 and the second filter screen 33. A cover plate (not shown in the figure) is closed on the collection box 37, which facilitates the removal of the microporous tube fragments in the collection box 37.

[0048] After the microporous tube undergoes a pressure resistance test, it ruptures, forming fragments that scatter inside the test chamber 22. At this point, the first filter 32 and the second filter 33, initially placed horizontally on the support tube 311, begin to function, catching the fallen microporous tube fragments and achieving a preliminary collection effect.

[0049] When it is necessary to centrally clean the microporous fragments, pull the lever 34 fixedly installed on the support plate 31. Pulling the lever 34 upwards pulls the support plate 31. Since the first filter screen 32 and the second filter screen 33 are respectively hinged to the left and right sides of the bottom surface of the support plate 31, this causes the ends of the first filter screen 32 and the second filter screen 33 that are close to each other to move upwards. Simultaneously, the rotating parts 35 fixedly installed at the opposite ends of the first filter screen 32 and the second filter screen 33 will rotate within the grooves 312 opened in the inner wall of the test chamber 22. As the pulling process continues, the first filter screen 32 and the second filter screen 33 gradually tilt downwards at both ends. The microporous fragments originally distributed throughout the filter screens will slide towards both ends along the tilted filter screen surface under the action of gravity, eventually accumulating at the ends of the first filter screen 32 and the second filter screen 33.

[0050] Furthermore, the first through groove on the rotating part 35 and the second through grooves on both sides of the first filter screen 32 and the second filter screen 33 cooperate with the collection box 37 installed on both sides of the test box 22. The microporous tube fragments concentrated at both ends of the filter screen will fall into the collection box 37 through these through grooves, thereby achieving further collection of the microporous tube fragments, greatly improving cleaning efficiency and facilitating subsequent cleaning of the test box 22;

[0051] It should be noted that when the microporous tube fragments on the filter screen slip and get stuck, the lever 34 can be pulled up and down repeatedly to move the support plate 31 and drive the first filter screen 32 and the second filter screen 33 to move, thereby shaking the microporous tube fragments on the first filter screen 32 and the second filter screen 33. During this process, the first filter screen 32 and the second filter screen 33 continuously rise and fall, producing a shaking effect on the microporous tube fragments accumulated on them, thereby helping the fragments to slide off smoothly.

[0052] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A device for offline withstand voltage testing of a microporous tube for a conductive nozzle, characterized in that: include: A control box (11) has a gas-liquid booster pump (18) for pressurizing the test liquid medium and a medium tank (112) for storing the liquid medium; a test assembly (2) is installed on the control box (11), the test assembly (2) has a test box (22) for storing microporous tubes and a hopper for storing liquid medium, the liquid outlet of the gas-liquid booster pump (18) is connected to the test box (22) through a high-pressure liquid pipe (19); one end of the high-pressure liquid pipe (19) is connected to a first plug (24) for sealing one end of the microporous tube and a second plug (28) for sealing the other end of the microporous tube; a collection assembly (3) is installed inside the test box (22), the collection assembly (3) includes components installed in the test box (22). The test chamber (22) has a support frame (38) on its inner wall. Multiple sets of springs (39) are installed on the support frame (38). A guide rod (310) is installed through the center of each spring (39). A support tube (311) is installed between two sets of guide rods (310). A support plate (31) is provided inside the test chamber (22). A first filter screen (32) is hinged to the bottom surface of the support plate (31) near the right side. A second filter screen (33) is hinged to the bottom surface of the support plate (31) near the left side. A rotating part (35) is installed on both the first filter screen (32) and the second filter screen (33). The rotating part (35) is arc-shaped. An inner groove (312) is opened on the inner wall of the test chamber (22). A pull rod (34) is installed on the support plate (31).

2. The apparatus for offline withstand voltage testing of a microporous tube for a conductive nozzle according to claim 1, characterized in that: The rotating part (35) is provided with a first through groove, and the first filter screen (32) and the second filter screen (33) are provided with a second through groove on both sides. The test box (22) is connected to the collection box (37) on both sides.

3. The apparatus for offline withstand voltage testing of a microporous tube for a conductive nozzle according to claim 2, characterized in that: The collection box (37) is covered with a cover plate.

4. The apparatus for offline withstand voltage testing of a microporous tube for a conductive nozzle according to claim 2, characterized in that: The gas-liquid booster pump (18) has a compressed air inlet. The air chamber of the gas-liquid booster pump (18) is connected to an external air compressor through the compressed air inlet. An inlet pressure regulating valve (15) and an inlet pressure gauge (12) are provided on the connecting pipeline between the gas-liquid booster pump (18) and the air compressor. The bottom of the test box (22) is connected to the medium tank (112) through the first return pipe (113). The medium tank (112) is connected to the liquid inlet of the gas-liquid booster pump (18) through the liquid inlet pipe (110). A high-pressure shut-off valve (17) and an outlet high-pressure gauge (13) are provided on the pipeline of the high-pressure liquid pipe (19). The high-pressure shut-off valve (17) and the outlet high-pressure gauge (13) are both installed on the control box (11).

5. The apparatus for offline withstand voltage testing of a microporous tube for a conductive nozzle according to claim 4, characterized in that: A fixed seat (25) is installed on one end of the inner wall of the test box (22). Two sets of guide rods (27) are installed on the fixed seat (25). A second plug (28) is slidably installed between the two sets of guide rods (27). A screw (26) is threadedly connected to the fixed seat (25). The second plug (28) is bearing connected to one end of the screw (26).

6. The apparatus for offline withstand voltage testing of a microporous tube for a conductive nozzle according to claim 5, characterized in that: A rotating handle is installed on one end of the screw (26) that passes through the test box (22).

7. The apparatus for offline withstand voltage testing of a microporous tube for a conductive nozzle according to claim 1, characterized in that: The control box (11) is equipped with a switch (14).

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