Metal pipe airtightness detection device and use method thereof

Abstract

The invention discloses a metal pipe airtightness detection device and a use method thereof, and relates to the technical field of pipe detection, the metal pipe airtightness detection device comprises a detection box, the upper part of the detection box is provided with a plurality of first square grooves, the inner sides of the first square grooves are symmetrically provided with support blocks, the inner side of the detection box is provided with a plurality of second square grooves, and the detection box is provided with a detection assembly. The detection assembly comprises an air source unit arranged on the detection box, a plurality of air delivery pipes and rubber plates movably connected to the upper part of the detection box, a circulating pump mounted on the inner side of the second square groove, a first delivery pipe and a second delivery pipe respectively mounted at the output end of the circulating pump, and a circular groove jointly formed between the first square groove and the second square groove; the multiple metal pipes are placed on the supporting blocks on the inner sides of the first square grooves correspondingly, the mutual influence between water flow fluctuation and the pipes can be effectively reduced by arranging the detection assembly, and it is ensured that the detection result accurately reflects the airtightness conditions of the pipes.

Description

Technical Field

[0001] The present invention relates to the technical field of pipe detection, and in particular to a metal pipe air tightness detection device and a use method thereof. Background Art

[0002] Metal pipes are long, hollow steel strips with no seams around their perimeters. Made primarily of metals (such as steel, iron, copper, and aluminum), they are processed through processes such as rolling, extrusion, drawing, and welding. Metal pipes are widely used in numerous fields, and airtightness testing is crucial to ensuring their performance, safety, and quality. In the oil, natural gas, and chemical industries, metal pipes are used to transport flammable, explosive, toxic, or corrosive media. If the pipes have airtightness issues, media leakage can lead to serious safety incidents such as fires, explosions, and poisoning. For example, a leak in a natural gas pipeline can cause a buildup of natural gas, which can explode if exposed to open flames or sparks. Therefore, methods such as bubble and sedimentation methods are commonly used to test the airtightness of metal pipes.

[0003] When testing using the bubble method, gas is usually injected into a pipe placed in a water source, and then the water is observed to see if there are bubbles. However, when the pipe is fixed and clamped, the water flow is easily moved, thereby generating fluctuations. After the water flow fluctuates, it is difficult to observe the bubbles. In addition, when testing the pipe in the water flow, impurities generated by the pipe during transportation and processing are easily retained in the water, making the water source turbid, affecting the observation of bubbles, and thus affecting the accuracy of the testing work. Therefore, a metal pipe air tightness testing device and a method for using the same are proposed. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings in the prior art that when operations such as fixing and clamping pipes are performed, the water flow is easily moved, thereby generating fluctuations, and it is difficult to observe bubbles after the water flow fluctuates. In addition, when testing multiple pipes in the water flow, impurities generated by the pipes during transportation and processing are easily retained in the water, making the water source turbid, affecting the observation of bubbles, and thus affecting the accuracy of the detection work. A metal pipe air tightness detection device and a method of use are proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A metal pipe air tightness detection device comprises a detection box, a plurality of first square grooves are opened on the upper part of the detection box, a support block is symmetrically installed on the inner side of the first square groove, a plurality of second square grooves are opened on the inner side of the detection box, a detection assembly is provided on the detection box, the detection assembly comprises an air source unit provided on the detection box, a plurality of air delivery pipes and rubber plates movably connected to the upper part of the detection box, a circulation pump installed on the inner side of the second square groove, a first delivery pipe and a second delivery pipe respectively installed at the output end of the circulation pump, a circular groove jointly opened between the first square groove and the second square groove, a plurality of metal pipes are respectively placed in the first square groove and the second square groove. On the support block inside the square groove, the air source unit drives the air pipe to be inserted into the pipe and presses against the pipe through the rubber plate. The circulation pump is started to transmit the water source inside the second square groove through the first delivery pipe from the bottom of the first square groove to the first square groove through the second delivery pipe and the circular groove, so that the water source covers the pipe. The air source unit transmits gas to the inside of the pipe through the air pipe for testing. After the test is completed, the circulation pump draws the water source inside the first square groove into the second square groove through the second delivery pipe and the circular groove, which can effectively reduce the mutual influence between water flow fluctuations and pipes, and ensure that the test results accurately reflect the airtightness condition of the pipe itself.

[0007] The detection box is provided with a water source treatment component, which includes a first transmission unit and a second transmission unit provided on the detection box, a filter plate installed on the inner side of the circular groove, a scraper plate and a push plate slidingly provided on the inner side of the first square groove, a plurality of open grooves opened on the side of the detection box, a block slidingly provided on the inner side of the open groove, and a baffle installed on the side of the block. The first transmission unit and the second transmission unit drive the scraper plate to scrape impurities on the filter plate, and the push plate moves to push the block to move and expose the open groove. The impurities scraped by the scraper plate are pushed to the outside of the detection box through the open groove, thereby ensuring the cleanliness of the water source, avoiding the interference of impurities on subsequent detection, and improving the reliability of detection.

[0008] The above technical solution further includes:

[0009] The air source unit includes a driving device installed on the upper part of the detection box, an output end of the driving device is provided with a movable plate, and the air supply pipe and the rubber plate are both installed on a side of the movable plate away from the driving device.

[0010] An air source generating device is installed on the side of the detection box. The output end of the air source generating device is fixedly connected to the air pipe. The driving device drives the movable plate to move and inserts the air pipe into the opening of the pipe and the rubber plate pushes the end of the pipe.

[0011] A plurality of valves are installed on the inner side of the second square groove. The positions of the valves correspond to the positions of the circular grooves. The valves are fixedly connected to the second delivery pipe.

[0012] The first transmission unit includes a protective frame installed on the side of the detection box, a servo motor installed on the inner side of the protective frame, a rotating rod installed on the output end of the servo motor, a plurality of second bevel gears installed on the outer side of the rotating rod, a threaded rod rotatably connected to the inner side of the first square groove, a first bevel gear installed on the end of the threaded rod, the first bevel gear and the second bevel gear are meshed with each other, the servo motor drives the rotating rod to rotate and at the same time drives the threaded rod to rotate through the plurality of second bevel gears and the first bevel gear.

[0013] A square plate is installed on the upper part of the scraping plate, the square plate is threadedly connected to the threaded rod, the pushing plate is installed on the side of the square plate, the scraping plate is slidingly connected to the first square groove, and when the threaded rod rotates, the scraping plate and the pushing plate are driven to move through the square plate.

[0014] A round rod is symmetrically and movably connected to the inner side of the baffle, and the round rod is fixedly connected to the detection box. A spring is installed on the outer side of the round rod, and the spring is fixedly connected to the baffle. After the spring in the stretched state is reset, it can drive the block and the baffle to reset.

[0015] The size of the opening of the opening slot is adapted to the size of the blocking block and the scraping plate, thereby ensuring that all impurities are pushed to the outside of the detection box and that the detection box is sealed.

[0016] The first bevel gear and the second bevel gear are both located inside the protection frame.

[0017] A method for using a metal pipe air tightness detection device, which uses a metal pipe air tightness detection device, includes the following steps:

[0018] Step 1: Place the metal pipes on the support blocks inside the first square groove and clamp the pipes by moving the rubber plates;

[0019] Step 2: Start the circulation pump. The circulation pump injects the water source inside the second square tank into the bottom of the first square tank through the first delivery pipe, the second delivery pipe and the circular tank. The gas delivery pipe injects gas into the pipe. The air tightness test is performed by observing whether there are bubbles in the water source in the first square tank. After the test is completed, the water source in the first square tank is pumped into the second square tank through the circulation pump, and impurities in the water flow are filtered through the filter plate.

[0020] Step 3: After the test is completed, the scraper plate moves to scrape off the impurities filtered out of the filter plate, and the push plate moves to push the block and open the opening slot. The impurities scraped off by the scraper plate are discharged out of the test box through the opening slot.

[0021] The present invention has the following beneficial effects:

[0022] 1. In the present invention, by setting up a detection component, water is injected from the bottom of the first square groove after the pipe is fixed, thereby avoiding the fluctuation of water flow caused by the movement of the water flow during the movement or clamping of the pipe. At the same time, multiple pipes are placed in the first square groove for separate testing, which can effectively reduce the mutual influence of water flow fluctuations and pipes, and ensure that the test results accurately reflect the airtightness of the pipe itself.

[0023] 2. In the present invention, by setting up a water source treatment component, during the circulation process, impurities in the water flow are filtered through the filter plate, and at the same time, the scraper plate scrapes the impurities filtered out of the filter plate, and at the same time, the push plate pushes the blockage to the outside of the open groove, so that the impurities are discharged outside the device, thereby ensuring the cleanliness of the water source, avoiding the interference of impurities on subsequent detection, and improving the reliability of detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall upper structure of a metal pipe air tightness detection device and its use method proposed in the present invention;

[0025] Figure 2 It is a schematic diagram of the overall side structure of the present invention;

[0026] Figure 3 It is a schematic diagram of the overall side sectional structure of the present invention;

[0027] Figure 4 for Figure 1 A schematic diagram of the structure at center A;

[0028] Figure 5 for Figure 2 A magnified schematic diagram of the structure at point B in the middle;

[0029] Figure 6 for Figure 2 A magnified schematic diagram of the structure at point C in the middle;

[0030] Figure 7 for Figure 2 Enlarged schematic diagram of the structure at point D in the middle.

[0031] In the figure: 1. detection box; 2. first square groove; 3. support block; 4. second square groove; 5. driving device; 6. movable plate; 7. circular groove; 8. filter plate; 9. circulation pump; 10. first delivery pipe; 11. second delivery pipe; 12. valve; 13. threaded rod; 14. square plate; 15. scraper plate; 16. push plate; 17. first bevel gear; 18. protection frame; 19. servo motor; 20. second bevel gear; 21. open groove; 22. blocking block; 23. baffle; 24. round rod; 25. spring; 26. gas source generating device; 27. gas pipe; 28. rubber plate; 29. ​​rotating rod. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] Example 1

[0034] like Figure 1 - Figure 7 As shown, the present invention proposes a metal pipe air tightness detection device and a method of using the same, comprising a detection box 1, a plurality of first square grooves 2 are opened on the upper part of the detection box 1, a support block 3 is symmetrically installed on the inner side of the first square groove 2, a plurality of second square grooves 4 are opened on the inner side of the detection box 1, a detection assembly is provided on the detection box 1, the detection assembly includes an air source unit provided on the detection box 1, a plurality of air delivery pipes 27 and a rubber plate 28 movably connected to the upper part of the detection box 1, a circulating pump 9 installed inside the second square groove 4, a first delivery pipe 10 and a second delivery pipe 11 respectively installed at the output end of the circulating pump 9, a circular groove 7 jointly opened between the first square groove 2 and the second square groove 4, and a plurality of metal pipes are divided into Don't place it on the support block 3 inside the first square groove 2, the air source unit drives the air pipe 27 to insert into the pipe and presses against the pipe through the rubber plate 28, the circulation pump 9 is started, and the water source inside the second square groove 4 is transmitted from the bottom of the first square groove 2 to the first square groove 2 through the first delivery pipe 10 through the second delivery pipe 11 and the circular groove 7, so that the water source covers the pipe, and the air source unit delivers gas to the inside of the pipe through the air pipe 27 for detection. After the detection is completed, the circulation pump 9 draws the water source inside the first square groove 2 into the second square groove 4 through the second delivery pipe 11 and the circular groove 7, which can effectively reduce the water flow fluctuation and the mutual influence between the pipes, and ensure that the test results accurately reflect the airtightness of the pipe itself.

[0035] The detection box 1 is provided with a water source treatment component, which includes a first transmission unit and a second transmission unit provided on the detection box 1, a filter plate 8 installed on the inner side of the circular groove 7, a scraper plate 15 and a push plate 16 slidingly provided on the inner side of the first square groove 2, a plurality of open grooves 21 opened on the side of the detection box 1, a blocking block 22 slidingly provided on the inner side of the open groove 21, and a baffle 23 installed on the side of the blocking block 22. The first transmission unit and the second transmission unit drive the scraper plate 15 to scrape impurities on the filter plate 8, and the push plate 16 moves to push the blocking block 22 to move and expose the open groove 21. The impurities scraped by the scraper plate 15 are pushed to the outside of the detection box 1 through the open groove 21, thereby ensuring the cleanliness of the water source, avoiding the interference of impurities on subsequent detection, and improving the reliability of detection.

[0036] The air source unit includes a driving device 5 installed on the upper part of the detection box 1, a movable plate 6 is provided at the output end of the driving device 5, and an air supply pipe 27 and a rubber plate 28 are both installed on the side of the movable plate 6 away from the driving device 5.

[0037] An air source generating device 26 is installed on the side of the detection box 1. The output end of the air source generating device 26 is fixedly connected to the air pipe 27. The driving device 5 drives the movable plate 6 to move and inserts the air pipe 27 into the opening of the pipe and the rubber plate 28 pushes the end of the pipe.

[0038] A plurality of valves 12 are installed inside the second square groove 4 . The positions of the valves 12 correspond to the positions of the circular grooves 7 . The valves 12 are fixedly connected to the second delivery pipe 11 .

[0039] In this embodiment, when it is necessary to perform an air tightness test on the pipe, multiple pipes can be placed on the support block 3 inside the first square groove 2, and then the driving device 5 is started. The movable plate 6 is driven to move by the driving device 5. When the movable plate 6 moves, the air delivery pipe 27 is inserted into the opening of the pipe. At the same time, the end of the pipe is pushed by the rubber plate 28, so that the rubber plate 28 and the inner wall of the first square groove 2 clamp the pipe. Then, the circulation pump 9 and the valve 12 are started. After the circulation pump 9 is started, the water source inside the second square groove 4 is passed through the first delivery pipe 10 through the first delivery pipe 10. The two delivery pipes 11 and the circular groove 7 are used for transmission, so as to inject the water from the bottom of the first square groove 2. When the water source covers the pipe, the circulation pump 9 and the valve 12 are closed, and then the gas source generating device 26 is started. The gas is transmitted to the gas transmission pipe 27 through the gas source generating device 26, so that the gas transmission pipe 27 injects gas into the pipe. The air tightness test is performed by observing whether there are bubbles in the water source in the first square groove 2. After the test is completed, the water source in the first square groove 2 is pumped into the second square groove 4 by the re-circulation pump 9, and the impurities in the water flow are filtered through the filter plate 8.

[0040] Example 2

[0041] like Figure 1 - Figure 7 As shown, based on the first embodiment, the first transmission unit includes a protective frame 18 installed on the side of the detection box 1, a servo motor 19 installed on the inner side of the protective frame 18, a rotating rod 29 installed on the output end of the servo motor 19, and a plurality of second bevel gears 20 installed on the outer side of the rotating rod 29. The inner side of the first square groove 2 is rotatably connected to the threaded rod 13, and the end of the threaded rod 13 is installed with a first bevel gear 17. The first bevel gear 17 is meshed with the second bevel gear 20. The servo motor 19 drives the rotating rod 29 to rotate and at the same time drives the threaded rod 13 to rotate through the plurality of second bevel gears 20 and the first bevel gear 17.

[0042] A square plate 14 is installed on the upper part of the scraping plate 15, and the square plate 14 is threadedly connected to the threaded rod 13. The pushing plate 16 is installed on the side of the square plate 14. The scraping plate 15 is slidingly connected to the first square groove 2. When the threaded rod 13 rotates, the scraping plate 15 and the pushing plate 16 are driven to move through the square plate 14.

[0043] A round rod 24 is symmetrically and movably connected to the inner side of the baffle 23, and the round rod 24 is fixedly connected to the detection box 1. A spring 25 is installed on the outer side of the round rod 24, and the spring 25 is fixedly connected to the baffle 23. After the spring 25 in the stretched state is reset, it can drive the block 22 and the baffle 23 to reset.

[0044] The size of the opening of the opening slot 21 is adapted to the size of the blocking block 22 and the scraper plate 15 , ensuring that all impurities are pushed to the outside of the detection box 1 and that the detection box 1 is sealed.

[0045] The first bevel gear 17 and the second bevel gear 20 are both located inside the protection frame 18 .

[0046] In this embodiment, when the water source is pumped into the second square trough 4 again through the circulation pump 9 and filtered through the filter plate 8, the servo motor 19 can be started at this time, and the servo motor 19 drives the rotating rod 29 to rotate. When the rotating rod 29 rotates, it can respectively drive the multiple threaded rods 13 to rotate through the multiple second bevel gears 20 and the first bevel gear 17. The force generated when the threaded rod 13 rotates drives the square plate 14 to move, thereby driving the scraping plate 15 and the pushing plate 16 to move. When the scraping plate 15 moves, it scrapes the impurities filtered out of the filter plate 8. At the same time, when the pushing plate 16 moves, it can push the blocking block 22, thereby pushing the blocking block 22 out. When the scraper 15 moves to the outside of the open groove 21, the baffle 23 moves along the round rod 24 in the direction away from the detection box 1. At this time, the spring 25 is stretched, and the open groove 21 is exposed. The impurities scraped by the scraper 15 can be discharged to the outside of the detection box 1 through the open groove 21. After the scraper 15 finishes scraping, the threaded rod 13 is reversed to drive the scraper 15 and the push plate 16 to reset. When the push plate 16 no longer pushes the block 22, the spring 25 in the stretched state is reset, thereby driving the block 22 and the baffle 23 to reset, so that the block 22 is reinserted into the inner side of the open groove 21, so that the baffle 23 fits the detection box 1.

[0047] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A metal pipe air tightness detection device, comprising a detection box (1), characterized in that: The upper part of the detection box (1) is provided with a plurality of first square grooves (2), the inner side of the first square grooves (2) is symmetrically provided with a support block (3), the inner side of the detection box (1) is provided with a plurality of second square grooves (4), and the detection box (1) is provided with a detection assembly, which comprises an air source unit provided on the detection box (1), a plurality of air delivery pipes (27) and rubber plates (28) movably connected to the upper part of the detection box (1), a circulation pump (9) provided inside the second square groove (4), a first delivery pipe (10) and a second delivery pipe (11) respectively provided at the output end of the circulation pump (9), and a circular groove (7) provided between the first square groove (2) and the second square groove (4). , a plurality of metal pipes are respectively placed on the support block (3) inside the first square groove (2), the gas source unit drives the gas pipe (27) to be inserted into the pipe and presses against the pipe through the rubber plate (28), the circulation pump (9) is started and transmits the water source inside the second square groove (4) through the first delivery pipe (10) from the bottom of the first square groove (2) to the first square groove (2) through the second delivery pipe (11) and the circular groove (7) and makes the water source submerge the pipe, the gas source unit transmits gas to the inside of the pipe through the gas pipe (27) for detection, and after the detection is completed, the circulation pump (9) pumps the water source inside the first square groove (2) into the second square groove (4) through the second delivery pipe (11) and the circular groove (7); The detection box (1) is provided with a water source treatment component, which comprises a first transmission unit and a second transmission unit provided on the detection box (1), a filter plate (8) installed inside the circular groove (7), a scraping plate (15) and a pushing plate (16) slidingly provided inside the first square groove (2), a plurality of open grooves (21) provided on the side of the detection box (1), a blocking block (22) slidingly provided inside the open groove (21), and a baffle (23) provided on the side of the blocking block (22). The first transmission unit and the second transmission unit drive the scraping plate (15) to scrape impurities on the filter plate (8), the pushing plate (16) moves to push the blocking block (22) to move and expose the open groove (21), and the impurities scraped by the scraping plate (15) are pushed to the outside of the detection box (1) through the open groove (21).

2. The metal pipe air tightness detection device according to claim 1, characterized in that: The gas source unit includes a detection box (1) with a driving device (5) installed on the upper part, a movable plate (6) at the output end of the driving device (5), and the gas pipe (27) and the rubber plate (28) are both installed on the side of the movable plate (6) away from the driving device (5).

3. The metal pipe air tightness detection device according to claim 1, characterized in that A gas source generating device (26) is installed on the side of the detection box (1), and the output end of the gas source generating device (26) is fixedly connected to the gas pipe (27).

4. The metal pipe air tightness detection device according to claim 1, characterized in that: A plurality of valves (12) are installed on the inner side of the second square groove (4), the positions of the valves (12) and the circular groove (7) correspond to each other, and the valves (12) are fixedly connected to the second delivery pipe (11).

5. The metal pipe air tightness detection device according to claim 4, characterized in that: The first transmission unit comprises a protection frame (18) installed on the side of the detection box (1), a servo motor (19) installed on the inner side of the protection frame (18), a rotating rod (29) installed on the output end of the servo motor (19), a plurality of second bevel gears (20) installed on the outer side of the rotating rod (29), a threaded rod (13) rotatably connected to the inner side of the first square slot (2), a first bevel gear (17) installed on the end of the threaded rod (13), and the first bevel gear (17) and the second bevel gear (20) are meshed with each other.

6. The metal pipe air tightness detection device according to claim 5, characterized in that: A square plate (14) is installed on the upper part of the scraping plate (15), the square plate (14) is threadedly connected to the threaded rod (13), the pushing plate (16) is installed on the side of the square plate (14), and the scraping plate (15) is slidably connected to the first square groove (2).

7. The metal pipe air tightness detection device according to claim 1, characterized in that: A round rod (24) is symmetrically and movably connected to the inner side of the baffle (23), and the round rod (24) is fixedly connected to the detection box (1). A spring (25) is installed on the outer side of the round rod (24), and the spring (25) is fixedly connected to the baffle (23).

8. The metal pipe air tightness detection device according to claim 1, characterized in that: The size of the opening of the opening groove (21) is adapted to the size of the blocking block (22) and the scraping plate (15).

9. The metal pipe air tightness detection device according to claim 5, characterized in that: The first bevel gear (17) and the second bevel gear (20) are both located inside the protection frame (18).

10. A method for using a metal pipe air tightness detection device, using the metal pipe air tightness detection device according to claim 1, characterized in that: The steps include: Step 1: Place the metal pipes on the support blocks (3) inside the first square groove (2), and move and clamp the pipes through the rubber plate (28); Step 2: Start the circulation pump (9), and the circulation pump (9) injects the water source inside the second square groove (4) through the first delivery pipe (10) through the second delivery pipe (11) and the circular groove (7) from the bottom of the first square groove (2), and injects gas into the pipe through the gas delivery pipe (27). The air tightness test is performed by observing whether there are bubbles in the water source in the first square groove (2). After the test is completed, the water source in the first square groove (2) is pumped into the second square groove (4) through the circulation pump (9), and at the same time, impurities in the water flow are filtered through the filter plate (8); Step 3: After the test is completed, the scraper plate (15) moves to scrape off the impurities filtered out of the filter plate (8), and the push plate (16) moves to push the blocking block (22) and open the opening slot (21). The impurities scraped off by the scraper plate (15) are discharged out of the test box (1) through the opening slot (21).

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