Loading arm leakage test device

Abstract

The invention belongs to the technical field of pipeline detection, and particularly relates to a crane pipe leakage test device which comprises a test bed, one side of the upper end face of the test bed is fixedly connected with a fixing plate, one side of the fixing plate is rotatably provided with a second rotating pipe, and one side of the upper end face of the test bed is slidably connected with an adjusting plate. A first rotating pipe penetrates through the upper end of the adjusting plate and is rotationally arranged at the upper end of the adjusting plate, the end of the first rotating pipe and the end of the second rotating pipe communicate with each other and are fixedly connected with a fixing cover, and the test bed is further provided with an adjustable wrapping mechanism which assists workers in observing the leakage position of the crane pipe more visually. By utilizing the adjustable wrapping mechanism, if a gap exists in the pipeline, gas can leak from the gap, the leaked gas can push the detection cloth to form a bulge on the surface of the detection cloth, a worker can position the leakage position of the pipeline by observing the bulge position of the detection cloth, and the repairing efficiency can be improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of pipeline detection, and specifically relates to a loading arm leakage test device. Background Art

[0002] A loading arm is a key device for the transportation and storage of liquid raw materials and products in the petrochemical industry. A large amount of liquid raw materials and products need to be transported and stored through the loading arm. During the production and processing of the loading arm, various factors may lead to poor sealing performance, such as welding defects, improper installation of seals, etc. Through leakage tests, these problems can be detected in a timely manner to ensure that the loading arm meets the expected sealing requirements before leaving the factory, thereby improving product quality and safety.

[0003] The patent with the publication number CN210953269U discloses a pipeline leakage detection device, including a water tank. A vertical rod is provided on the inner wall of the bottom of the water tank, and a sliding plate is slidably connected to the outer wall of the vertical rod. A first fixed box is welded to the outer wall of one side of the sliding plate. A blower is bolted to the outer wall of one side of the water tank, and an air duct is bolted to the exhaust end of the blower. A hose is sleeved on the outer wall of the air duct. An air inlet pipe is welded to the outer wall of the top of the first fixed box, and one end of the air inlet pipe communicates with the hose. A sliding rod is welded to the outer wall of one side of the sliding plate, and a movable plate is slidably connected to the outer wall of the sliding rod. A second fixed box is provided on the outer wall of one side of the movable plate. This patent facilitates the fixation of pipelines with different lengths, and the fixing cover is conical, so that the fixing cover can fix pipelines with different diameters, making the use more flexible. It can quickly and intuitively detect the leaking pipeline, and the detection effect is better.

[0004] However, the above technical solution still has the following deficiencies in actual application: By first sinking the pipeline into the water and then blowing gas into the pipeline, if there are gaps in the pipeline, bubbles will emerge on the water surface, so that it can be intuitively detected whether the pipeline leaks. Although this method can intuitively judge whether the pipeline leaks, it is difficult for workers to locate the specific leakage position of the pipeline. Usually, if the pipeline leaks, a series of subsequent repair work needs to be carried out on the pipeline. If workers cannot easily locate the specific leakage position of the pipeline, further search is required, which will affect the efficiency of the repair work.

[0005] Therefore, the present invention provides a loading arm leakage test device. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art and solve at least one technical problem proposed in the background art, the present invention provides a loading arm leakage test device.

[0007] The technical solution adopted by the present invention to solve its technical problems is as follows: A loading arm leakage test device includes a test bench. One side of the upper end surface of the test bench is fixedly connected with a fixing plate. A second rotating pipe is rotatably arranged on one side of the fixing plate. An adjusting plate is slidably connected to one side of the upper end surface of the test bench. A first rotating pipe is rotatably arranged through the upper end of the adjusting plate. Both ends of the first rotating pipe and the second rotating pipe are communicated and fixedly connected with fixing covers. An adjustable wrapping mechanism is also arranged on the test bench to assist workers in more intuitively observing the leakage position of the loading arm. The adjustable wrapping mechanism includes a threaded plate slidably connected to one side of the upper end surface of the test bench. A support ring is fixedly connected to the upper end of the threaded plate. A fixing ring is fixedly connected to the inner circle of the support ring. A plurality of adjusting rods are inserted and slidably connected along the radial direction on the fixing ring. One end of the adjusting rod is fixedly connected with a support frame. A detection cloth is fixedly connected to one side of the support frame. The detection cloth is made of elastic material. When the plurality of adjusting rods move simultaneously along the radial direction, the detection cloth can be stretched, and the size of the hole in the middle of the detection cloth can be adjusted.

[0008] Preferably, a first threaded rod is threadedly connected to the lower end of the adjusting plate. Both ends of the first threaded rod are rotatably arranged on the test bench. A first motor is fixedly connected to one side of the upper end surface of the test bench. The output end of the first motor is fixedly connected to one end of the first threaded rod.

[0009] Preferably, a blower is fixedly connected to one side of the fixing plate. The air outlet end of the blower is communicated and fixedly connected with an air outlet pipe. One end of the air outlet pipe is communicated with a connecting pipe. The connecting pipe is sleeved on one side of the second rotating pipe and is rotatably connected thereto. A fifth gear is sleeved and fixedly connected to one side of the second rotating pipe. A fourth gear is rotatably arranged on one side of the fixing plate. The fourth gear and the fifth gear are meshed with each other. A seventh motor is fixedly connected to one side of the fixing plate. The output end of the seventh motor is fixedly connected to the fourth gear.

[0010] Preferably, a piston is slidably connected to the inner cavity of the first rotating pipe. A piston rod is fixedly connected to one side of the piston. The piston rod is slidably connected to one side of the first rotating pipe. One end of the piston rod is fixedly connected with a fixing block. A spring is sleeved on one side of the piston rod. One end of the spring is fixedly connected to one side of the first rotating pipe, and the other end is fixedly connected to the fixing block. An exhaust hole is arranged on one side of the first rotating pipe.

[0011] Preferably, a third gear is sleeved and fixedly connected to one side of the first rotating pipe. A second gear is rotatably arranged on one side of the adjusting plate. The second gear and the third gear are meshed with each other. A fifth motor is fixedly connected to one side of the adjusting plate. The output end of the fifth motor is fixedly connected to the second gear.

[0012] Preferably, a connecting rod is rotatably arranged at one end of the adjusting rod, an adjusting ring is rotatably arranged at one end of the connecting rod, a third threaded rod is threadedly connected to one side of the adjusting ring, one end of the third threaded rod is rotatably arranged on the fixed ring, a fourth motor is fixedly connected to one side of the fixed ring, and the output end of the fourth motor is fixedly connected to one end of the third threaded rod.

[0013] Preferably, a rack is slidably connected to the upper end of the fixing plate, two slide rods are slidably connected to the right end of the rack, a chute plate is fixedly connected to the lower end of the slide rod, clamping blocks are slidably connected to both sides of the lower end surface of the chute plate, and a marker pen is clamped by the two clamping blocks in cooperation.

[0014] Preferably, a first gear is rotatably arranged on one side of the upper end of the fixing plate, the first gear meshes with the rack, a sixth motor is fixedly connected to one side of the upper end of the fixing plate, the output end of the sixth motor is fixedly connected to the first gear, an electric push rod is fixedly connected to the right side of the upper end surface of the rack, and the piston end of the electric push rod is fixedly connected to one side of the upper end surface of the chute plate.

[0015] Preferably, a bidirectional threaded rod is threadedly connected to the upper end of the clamping block, and both ends of the bidirectional threaded rod are rotatably arranged on the chute plate.

[0016] Preferably, a rubber gasket is arranged in the inner cavity of the fixed cover, a second threaded rod is threadedly connected to the lower end of the threaded plate, both ends of the second threaded rod are rotatably arranged on the test bench, a second motor is fixedly connected to one side of the upper end surface of the test bench, and the output end of the second motor is fixedly connected to one end of the second threaded rod.

[0017] The beneficial effects of the present invention are as follows: 1. For a loading arm leakage test device of the present invention, one end of the pipeline to be subjected to the leakage test is placed in the inner cavity of the left fixed cover, and then the first threaded rod is rotated by the first motor, so that the adjusting plate can slide, and the right fixed cover can be moved closer to the pipeline until the right end of the pipeline is in the inner cavity of the fixed cover, and the pipeline can be fixed by the two fixed covers, thus ensuring the stability of the pipeline during the leakage test and being beneficial to the smooth progress of the test.

[0018] 2. A swivel pipe leakage test device according to the present invention uses an adjustable wrapping mechanism to drive a detection cloth to closely fit the surface of the pipe, and gas is introduced into the pipe. If there is a gap in the pipe, the gas will leak out from the gap, and the leaked gas will push the detection cloth to form a bulge on the surface of the detection cloth. Workers can locate the leakage position of the pipe by observing the bulge position of the detection cloth, thus avoiding the situation of having to search for the leakage position when repairing the pipe later, which is beneficial to improving the repair efficiency. Moreover, during the test process, the angle of the pipe can be changed by driving the fixed covers on both sides to rotate simultaneously, so that workers only need to stand on one side of the test bench and keep a fixed line of sight to observe all the leakage positions of the pipe, thereby avoiding the situation where workers need to frequently move their line of sight to comprehensively observe the leakage positions of the pipe, which is relatively convenient. And whenever the leakage position of the pipe is found, a marker pen can be driven to draw a line at the leakage position of the pipe to mark all the leakage positions of the pipe. When repairing the pipe later, workers can quickly locate the gap position of the pipe by checking the marks on the surface of the pipe, thus avoiding the situation where workers miss or misremember due to too many leakage positions of the pipe, affecting the repair efficiency of the pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 is a three-dimensional structural schematic diagram of the present invention; Figure 2 is a three-dimensional structural schematic diagram at the detection cloth; Figure 3 is a three-dimensional structural schematic diagram of the support frame; Figure 4 is a three-dimensional structural schematic diagram at the fixing plate; Figure 5 is Figure 4 a partial enlarged view at A in Figure 6 is a three-dimensional structural schematic diagram of the fixed cover; Figure 7 is a three-dimensional structural schematic diagram at the chute plate; Figure 8 is a three-dimensional structural schematic diagram of Gear 1; Figure 9 is a partial sectional three-dimensional structural schematic diagram of the rotating pipe 1.

[0021] In the figure: 1. Test bench; 2. First motor; 3. First threaded rod; 4. Adjusting plate; 5. Second threaded rod; 6. Second motor; 7. Fixed cover; 8. Detection cloth; 9. Fixed plate; 10. Blower; 11. Air outlet pipe; 12. Connecting pipe; 13. Rack; 14. First gear; 15. Rubber gasket; 16. Adjusting rod; 17. Connecting rod; 18. Threaded plate; 19. Fixed ring; 20. Support ring; 21. Third threaded rod; 22. Adjusting ring; 23. Fourth motor; 24. Support frame; 25. Fifth motor; 26. Second gear; 27. Third gear; 28. First rotating pipe; 29. Piston; 30. Exhaust hole; 31. Piston rod; 32. Spring; 33. Fixed block; 34. Sixth motor; 35. Electric push rod; 36. Slide bar; 37. Chute plate; 38. Marker pen; 39. Clamping block; 40. Bidirectional threaded rod; 41. Seventh motor; 42. Fourth gear; 43. Fifth gear; 44. Second rotating pipe. Specific implementation manner

[0022] Next, the technical solution of the present invention will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] Please refer to Figures 1 - 9 , the present invention provides a technical solution: a loading arm leakage test device, including a test bench 1, one side of the upper end surface of the test bench 1 is fixedly connected with a fixed plate 9, one side of the fixed plate 9 is rotatably provided with a second rotating pipe 44, one side of the upper end surface of the test bench 1 is slidably connected with an adjusting plate 4, the upper end of the adjusting plate 4 penetrates and is rotatably provided with a first rotating pipe 28, both ends of the first rotating pipe 28 and the second rotating pipe 44 are communicated and fixedly connected with a fixed cover 7, and an adjustable wrapping mechanism for assisting workers to more intuitively observe the leakage position of the loading arm is also provided on the test bench 1; The adjustable wrapping mechanism includes a threaded plate 18 slidably connected to one side of the upper end surface of the test bench 1, the upper end of the threaded plate 18 is fixedly connected with a support ring 20, the inner ring of the support ring 20 is fixedly connected with a fixed ring 19, a plurality of adjusting rods 16 are inserted and slidably connected along the radial direction on the fixed ring 19, one end of the adjusting rod 16 is fixedly connected with a support frame 24, one side of the support frame 24 is fixedly connected with a detection cloth 8, the detection cloth 8 is made of elastic material, and when the plurality of adjusting rods 16 move along the radial direction at the same time, the detection cloth 8 can be stretched, and the size of the hole in the middle of the detection cloth 8 can be adjusted.

[0024] In this embodiment, as Figure 1 shown, the lower end of the adjusting plate 4 is threadedly connected with a first threaded rod 3, both ends of the first threaded rod 3 are rotatably arranged on the test bench 1, and one side of the upper end surface of the test bench 1 is fixedly connected with a first motor 2, and the output end of the first motor 2 is fixedly connected with one end of the first threaded rod 3.

[0025] Specifically, one end of the pipeline to be subjected to the leakage test is placed in the inner cavity of the left fixing cover 7, and then the motor 1 drives the threaded rod 1 to rotate, so that the adjusting plate 4 can slide, making the right fixing cover 7 approach the pipeline until the right end of the pipeline is in the inner cavity of the fixing cover 7, and the pipeline can be fixed by the two fixing covers 7, thus ensuring the stability of the pipeline during the leakage test and facilitating the smooth progress of the test.

[0026] In this embodiment, as Figures 1 - 9 shown, one side of the fixing plate 9 is fixedly connected with a blower 10. The air outlet end of the blower 10 is communicated and fixedly connected with an air outlet pipe 11. One end of the air outlet pipe 11 is communicated with a connecting pipe 12. The connecting pipe 12 is sleeved on one side of the rotating pipe 2 and is rotatably connected thereto. One side of the rotating pipe 2 is sleeved and fixedly connected with a gear 5. One side of the fixing plate 9 is rotatably provided with a gear 4. The gear 4 and the gear 5 are meshed with each other. One side of the fixing plate 9 is fixedly connected with a motor 7. The output end of the motor 7 is fixedly connected with the gear 4.

[0027] A piston 29 is slidably connected in the inner cavity of the rotating pipe 1. One side of the piston 29 is fixedly connected with a piston rod 31. The piston rod 31 is slidably connected with one side of the rotating pipe 1. One end of the piston rod 31 is fixedly connected with a fixing block 33. A spring 32 is sleeved on one side of the piston rod 31. One end of the spring 32 is fixedly connected with one side of the rotating pipe 1, and the other end is fixedly connected with the fixing block 33. An exhaust hole 30 is provided on one side of the rotating pipe 1.

[0028] One side of the rotating pipe 1 is sleeved and fixedly connected with a gear 3. One side of the adjusting plate 4 is rotatably provided with a gear 2. The gear 2 and the gear 3 are meshed with each other. One side of the adjusting plate 4 is fixedly connected with a motor 5. The output end of the motor 5 is fixedly connected with the gear 2.

[0029] One end of the adjusting rod 16 is rotatably provided with a connecting rod 17. One end of the connecting rod 17 is rotatably provided with an adjusting ring 22. One side of the adjusting ring 22 is threadedly connected with a threaded rod 3. One end of the threaded rod 3 is rotatably provided on the fixing ring 19. One side of the fixing ring 19 is fixedly connected with a motor 4. The output end of the motor 4 is fixedly connected with one end of the threaded rod 3.

[0030] A rack 13 is slidably connected to the upper end of the fixing plate 9. The right end of the rack 13 is slidably connected with two slide rods 36. The lower ends of the slide rods 36 are fixedly connected with a chute plate 37. Both sides of the lower end surface of the chute plate 37 are slidably connected with clamping blocks 39. The two clamping blocks 39 cooperate with each other to clamp a marker pen 38.

[0031] On one side of the upper end of the fixed plate 9, a first gear 14 is rotatably arranged. The first gear 14 meshes with the rack 13. On one side of the upper end of the fixed plate 9, a sixth motor 34 is fixedly connected. The output end of the sixth motor 34 is fixedly connected to the first gear 14. On the right side of the upper end surface of the rack 13, an electric push rod 35 is fixedly connected. The piston end of the electric push rod 35 is fixedly connected to one side of the upper end surface of the chute plate 37.

[0032] On the upper end of the clamping block 39, a bidirectional threaded rod 40 is threadedly connected. Both ends of the bidirectional threaded rod 40 are rotatably arranged on the chute plate 37.

[0033] Inside the fixed cover 7, a rubber gasket 15 is arranged. At the lower end of the threaded plate 18, a second threaded rod 5 is threadedly connected. Both ends of the second threaded rod 5 are rotatably arranged on the test bench 1. On one side of the upper end surface of the test bench 1, a second motor 6 is fixedly connected. The output end of the second motor 6 is fixedly connected to one end of the second threaded rod 5.

[0034] Specifically, when the existing pipeline leakage detection device is in use, it first sinks the pipeline into the water and then blows gas into the pipeline. If there are gaps in the pipeline, bubbles will emerge on the water surface, so that it can be directly detected whether the pipeline leaks. Although this method can directly judge whether the pipeline leaks, it is difficult for workers to locate the specific leakage position of the pipeline. Usually, if the pipeline leaks, a series of subsequent repair work needs to be carried out on the pipeline. If workers cannot easily locate the specific leakage position of the pipeline, they need to search further, which will affect the efficiency of the repair work. The loading arm is usually formed by splicing multiple pipes. In this embodiment, the straight pipe part of the loading arm is used. To solve the above problems, when this embodiment is in use, since the detection cloth 8 is located between two fixed covers 7, when the pipe is fixed, it will pass through the inner cavity of the detection cloth 8, and the detection cloth 8 does not contact the pipe during the fixing process. After the pipe is fixed, the motor four 23 drives the threaded rod three 21 to rotate, causing the adjusting ring 22 to move. The adjusting ring 22 drives multiple connecting rods 17 to rotate simultaneously, causing multiple adjusting rods 16 to move radially along the same direction, making multiple support frames 24 approach the pipe. Since the detection cloth 8 is elastic, the detection cloth 8 will closely fit the surface of the pipe. Then, by using the blower 10, gas can be transported through the air outlet pipe 11, the connecting pipe 12, the rotating pipe two 44, and the fixed cover 7 into the pipe. Moreover, since the rubber gasket 15 is arranged on the inner wall of the fixed cover 7, both edges of the fixed cover 7 will fit with the rubber gasket 15, preventing gas from leaking out from both ends of the pipe. If there are no gaps in the pipe, the gas will push the piston 29, causing the piston 29 and the piston rod 31 to move. When the piston 29 passes over the exhaust hole 30, the gas will discharge from the exhaust hole 30, and the detection cloth 8 will remain unchanged. When no gas is introduced into the inner cavity of the rotating pipe one 28, the piston 29 will reset under the action of the spring 32. If there are gaps in the pipe, the gas will leak out from the gaps. Moreover, since the detection cloth 8 is in close contact with the surface of the pipe, the leaked gas will push the detection cloth 8, forming a bulge on the surface of the detection cloth 8. Workers can locate the leakage position of the pipe by observing the bulge position of the detection cloth 8, thus avoiding the situation of having to search for the leakage position when repairing the pipe subsequently, which is beneficial to improving the repair efficiency. Moreover, the motor two 6 can drive the threaded rod two 5 to rotate, causing the threaded plate 18 to move horizontally, thereby changing the horizontal position of the detection cloth 8, enabling the detection cloth 8 to wrap around various positions of the pipe, thus improving the comprehensiveness of the leakage test. Although the leakage position of the pipe can be located by observing the bulge position of the detection cloth 8, since the detection cloth 8 wraps around the entire circumference of the pipe, workers have to frequently move their line of sight to comprehensively observe all positions of the detection cloth 8, which is rather troublesome. Therefore, to avoid this situation, during the test, by simultaneously starting the motor five 25 and the motor seven 41, the two fixed covers 7 can be rotated simultaneously under the action of the rotation of the gear two 26, the gear three 27, the gear four 42, and the gear five 43, thereby changing the angle of the pipe. As a result, workers only need to stand on one side of the test bench 1 and keep a fixed line of sight to observe all leakage positions of the pipe, thus avoiding the situation where workers have to frequently move their line of sight to comprehensively observe the leakage positions of the pipe, which is rather convenient. Although the leakage location of the pipeline can be located through the above method, however, when there are many leakage locations in the pipeline, it is easy for workers to miss or misremember, which will still affect the subsequent repair work of the pipeline. Therefore, in order to avoid this situation, whenever a leakage location of the pipeline is found, first drive the detection cloth 8 away from the pipeline. At this time, a gap is generated between the detection cloth 8 and the pipeline. Then, drive the first gear 14 to rotate by the sixth motor 34, so that the rack 13 moves horizontally, and the marker pen 38 moves above the pipeline. And, by driving the pipeline to rotate, the leakage location is aligned with the marker pen 38. Then, drive the marker pen 38 to descend by the electric push rod 35. When the marker pen 38 contacts the surface of the pipeline, then drive the marker pen 38 to move horizontally, and a line can be drawn at the leakage location of the pipeline. Then, the marker pen 38 and the detection cloth 8 are reset, and the test continues. Then, repeat the above operation to mark each leakage location of the pipeline. When the pipeline is repaired later, workers can quickly locate the pipeline gap position by checking the marks on the surface of the pipeline, thus avoiding the situation that due to too many pipeline leakage locations, workers miss or misremember, affecting the pipeline repair efficiency; Moreover, by rotating the bidirectional threaded rod 40, the two clamping blocks 39 can be made to approach or move away from each other to realize the replacement of the marker pen 38.

[0035] Working principle: One end of the pipeline to be subjected to the leakage test is placed in the inner cavity of the fixed cover 7 on the left side. Then, the motor 1 drives the rotation of the threaded rod 1, which can make the adjusting plate 4 slide, so that the fixed cover 7 on the right side approaches the pipeline until the right end of the pipeline is in the inner cavity of the fixed cover 7. Then, the pipeline can be fixed by the two fixed covers 7, ensuring the stability of the pipeline during the leakage test and facilitating the smooth progress of the test. After the pipeline is fixed, the motor 4 drives the rotation of the threaded rod 3, making the adjusting ring 22 move. The adjusting ring 22 drives the simultaneous rotation of multiple connecting rods 17, causing multiple adjusting rods 16 to move radially along the same time, making multiple support frames 24 approach the pipeline. Since the detection cloth 8 is elastic, the detection cloth 8 will closely adhere to the surface of the pipeline. Then, by using the blower 10, gas can be transported through the air outlet pipe 11, connecting pipe 12, rotating pipe 2, and fixed cover 7 into the pipeline. Moreover, since the rubber gasket 15 is arranged on the inner wall of the fixed cover 7, both edges of the fixed cover 7 will adhere to the rubber gasket 15, preventing gas from leaking out from both ends of the pipeline. If there are no gaps in the pipeline, the gas will push the piston 29, causing the piston 29 and the piston rod 31 to move. When the piston 29 passes over the exhaust hole 30, the gas will discharge from the exhaust hole 30 again, and the detection cloth 8 will show no change. When no gas is introduced into the inner cavity of the rotating pipe 1, the piston 29 will reset under the action of the spring 32. If there are gaps in the pipeline, the gas will leak out from the gaps. Moreover, since the detection cloth 8 is in close contact with the surface of the pipeline, the leaked gas will push the detection cloth 8, forming protrusions on the surface of the detection cloth 8. Workers can locate the leakage position of the pipeline by observing the position of the protrusions on the detection cloth 8, avoiding the situation of having to search for the leakage position when repairing the pipeline later, which is beneficial to improving the repair efficiency. And the transverse position of the detection cloth 8 can be changed by driving the rotation of the threaded rod 2 by the motor 2, making the threaded plate 18 move horizontally, so that the detection cloth 8 can wrap around all positions of the pipeline, improving the comprehensiveness of the leakage test. Although the leakage position of the pipeline can be located by observing the position of the protrusions on the detection cloth 8, since the detection cloth 8 wraps around the pipeline for one week, workers have to frequently move their line of sight to comprehensively observe all positions of the detection cloth 8, which is rather troublesome. Therefore, to avoid this situation, during the test, by simultaneously starting the motor 5 and the motor 7, the two fixed covers 7 can be rotated simultaneously under the action of the rotation of the gear 2, gear 3, gear 4, and gear 5, changing the angle of the pipeline. As a result, workers only need to stand on one side of the test bench 1 and keep a fixed line of sight to observe all the leakage positions of the pipeline, thus avoiding the situation where workers have to frequently move their line of sight to comprehensively observe the leakage positions of the pipeline, which is more convenient;Although the leakage location of the pipeline can be located by the above method, however, when there are many leakage locations in the pipeline, it is easy for workers to miss or misremember, which will still affect the subsequent repair work of the pipeline. Therefore, in order to avoid this situation, whenever the leakage location of the pipeline is found, first drive the detection cloth 8 away from the pipeline. At this time, a gap is generated between the detection cloth 8 and the pipeline. Then, drive the first gear 14 to rotate by the sixth motor 34, so that the rack 13 moves horizontally, and the marker pen 38 moves above the pipeline. And, by driving the pipeline to rotate, the leakage location is aligned with the marker pen 38. Then, drive the marker pen 38 to descend by the electric push rod 35. When the marker pen 38 contacts the surface of the pipeline, then drive the marker pen 38 to move horizontally, and a line can be drawn at the leakage location of the pipeline. Then, the marker pen 38 and the detection cloth 8 are reset, and the test continues. Then, repeat the above operation to mark each leakage location of the pipeline. When the pipeline is repaired later, the worker can quickly locate the pipeline gap position by checking the marks on the surface of the pipeline, thus avoiding the situation that the worker misses or misremembers due to too many leakage locations of the pipeline, affecting the pipeline repair efficiency; and, by rotating the bidirectional threaded rod 40, the two clamping blocks 39 can be made to approach or move away from each other to realize the replacement of the marker pen 38.;

[0036] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only to illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A crane pipe leakage test device, comprising a test bench (1), characterized in that: A fixed plate (9) is fixedly connected to one side of the upper end surface of the test bench (1), and a rotating tube 2 (44) is rotatably provided on one side of the fixed plate (9). An adjustment plate (4) is slidably connected to one side of the upper end surface of the test bench (1), and a rotating tube 1 (28) is rotatably provided through the upper end of the adjustment plate (4). The ends of the rotating tube 1 (28) and the rotating tube 2 (44) are both connected and fixedly connected to a fixed cover (7). The test bench (1) is also provided with an adjustable wrapping mechanism to assist workers in more intuitively observing the leakage position of the crane pipe. The adjustable wrapping mechanism comprises a threaded plate (18) slidably connected to one side of the upper end surface of the test bench (1); the upper end of the threaded plate (18) is fixedly connected to a support ring (20); the inner ring of the support ring (20) is fixedly connected to a fixing ring (19); a plurality of adjustment rods (16) are radially plugged and slidably connected to the fixing ring (19); one end of the adjustment rod (16) is fixedly connected to a support frame (24); one side of the support frame (24) is fixedly connected to a detection cloth (8); the detection cloth (8) is made of elastic material; the plurality of adjustment rods (16) can simultaneously move radially to stretch the detection cloth (8) and adjust the size of the hole in the middle of the detection cloth (8).

2. A crane pipe leakage test device according to claim 1, characterized in that: The lower end of the adjustment plate (4) is threadedly connected to a threaded rod (3), both ends of the threaded rod (3) are rotatably arranged on the test bench (1), and one side of the upper end surface of the test bench (1) is fixedly connected to a motor (2), and the output end of the motor (2) is fixedly connected to one end of the threaded rod (3).

3. A crane pipe leakage test device according to claim 1, characterized in that: A blower (10) is fixedly connected to one side of the fixed plate (9); an air outlet end of the blower (10) is connected to and fixedly connected to an air outlet pipe (11); one end of the air outlet pipe (11) is connected to a connecting pipe (12); the connecting pipe (12) is sleeved on one side of a rotating pipe (44) and is rotatably connected thereto; a gear (43) is sleeved and fixedly connected to one side of the rotating pipe (44); a gear (42) is rotatably provided on one side of the fixed plate (9); the gear (42) and the gear (43) are meshed with each other; a motor (7) is fixedly connected to one side of the fixed plate (9); an output end of the motor (41) is fixedly connected to the gear (42).

4. A crane pipe leakage test device according to claim 1, characterized in that: A piston (29) is slidably connected to the inner cavity of the rotating tube (28), and a piston rod (31) is fixedly connected to one side of the piston (29). The piston rod (31) is slidably connected to the one side of the rotating tube (28), and one end of the piston rod (31) is fixedly connected to a fixing block (33). A spring (32) is sleeved on one side of the piston rod (31), and one end of the spring (32) is fixedly connected to one side of the rotating tube (28), and the other end is fixedly connected to the fixing block (33). An exhaust hole (30) is provided on one side of the rotating tube (28).

5. A crane pipe leakage test device according to claim 4, characterized in that: A gear three (27) is sleeved on and fixedly connected to one side of the rotating tube one (28); a gear two (26) is rotatably arranged on one side of the adjusting plate (4); the gear two (26) and the gear three (27) are meshed with each other; a motor five (25) is fixedly connected to one side of the adjusting plate (4); and an output end of the motor five (25) is fixedly connected to the gear two (26).

6. A crane pipe leakage test device according to claim 1, characterized in that: A connecting rod (17) is rotatably provided at one end of the adjusting rod (16), an adjusting ring (22) is rotatably provided at one end of the connecting rod (17), a threaded rod three (21) is threadedly connected to one side of the adjusting ring (22), one end of the threaded rod three (21) is rotatably provided on a fixing ring (19), a motor four (23) is fixedly connected to one side of the fixing ring (19), and an output end of the motor four (23) is fixedly connected to one end of the threaded rod three (21).

7. A crane pipe leakage test device according to claim 1, characterized in that: The upper end of the fixed plate (9) is slidably connected to a rack (13), the right end of the rack (13) is slidably connected to two slide bars (36), the lower end of the slide bar (36) is fixedly connected to a slide plate (37), and both sides of the lower end surface of the slide plate (37) are slidably connected to clamping blocks (39), and the two clamping blocks (39) cooperate with each other to clamp the marking pen (38).

8. A crane pipe leakage test device according to claim 7, characterized in that: A gear one (14) is rotatably provided on one side of the upper end of the fixed plate (9), and the gear one (14) and the rack (13) are meshed with each other. A motor six (34) is fixedly connected to one side of the upper end of the fixed plate (9), and the output end of the motor six (34) is fixedly connected to the gear one (14). An electric push rod (35) is fixedly connected to the right side of the upper end surface of the rack (13), and the piston end of the electric push rod (35) is fixedly connected to one side of the upper end surface of the slide plate (37).

9. A crane pipe leakage test device according to claim 8, characterized in that: The upper end of the clamping block (39) is threadedly connected to a bidirectional threaded rod (40), and both ends of the bidirectional threaded rod (40) are rotatably disposed on the slide plate (37).

10. A crane pipe leakage test device according to claim 1, characterized in that: The inner cavity of the fixed cover (7) is provided with a rubber gasket (15), the lower end of the threaded plate (18) is threadedly connected to the second threaded rod (5), both ends of the second threaded rod (5) are rotatably arranged on the test bench (1), and one side of the upper end surface of the test bench (1) is fixedly connected to the second motor (6), and the output end of the second motor (6) is fixedly connected to one end of the second threaded rod (5).

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