Air tightness testing equipment for hydraulic pipeline assembly and operation method of air tightness testing equipment

Abstract

The invention relates to the field of hydraulic pipe assembly testing, and discloses hydraulic pipeline assembly airtightness testing equipment which comprises a water tank, a first bearing roller, an air blower, an adjusting plate and a second bearing roller, the top of the water tank is provided with a vertical plate and a positioning plate, the vertical plate is provided with an air blowing structure, and the two ends of the first bearing roller are provided with first connecting shafts. A fixing ring is arranged on the first bearing roller, a first connecting shaft penetrates through the fixing ring, a first sealing cylinder is arranged on the first bearing roller, an inner cavity communicated with the first sealing cylinder is formed in the first bearing roller, an adjusting plate is connected with a pushing structure, and a second bearing roller is movably arranged on the adjusting plate. The adjusting plate vertically moves under the action of the first hydraulic cylinder and the first piston rod, the adjusting plate drives the second bearing roller to ascend or descend, the second bearing roller drives one end of the hydraulic pipe assembly to ascend or descend, and the hydraulic pipe assembly conveniently enters water in the water tank in an inclined mode for air tightness detection and inclined drying treatment; the air tightness detection efficiency and the drying efficiency of the hydraulic pipe assembly can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of hydraulic pipe detection, and particularly to a hydraulic pipeline assembly airtightness testing device and its operation method. Background Art

[0002] Currently, during the processing of hydraulic pipes, hydraulic pipes with damages such as cracks and micropores are likely to be mixed into qualified products because they are not easily recognizable by operators with the naked eye, resulting in a decrease in the qualified rate of hydraulic pipes. Existing hydraulic pipe detections mostly use underwater air pressure detection devices for air pressure detection. For example, the patent with the application number 201821254236.8 discloses a hydraulic pipe assembly airtightness detection device, which solves the problem of the wet surface of the hydraulic pipe after detection. However, it has problems such as poor sealing performance during the detection process of the hydraulic pipe, inability to detect multiple hydraulic pipes simultaneously, and low accuracy of the detection results.

[0003] Based on this, the applicant proposes a hydraulic pipeline assembly airtightness testing device and its operation method. Summary of the Invention

[0004] The object of the present invention is to overcome the problems existing in the existing hydraulic pipe assembly airtightness detection device, such as poor sealing performance during the detection process of the hydraulic pipe, inability to detect multiple hydraulic pipes simultaneously, and low accuracy of the detection results, and to provide a hydraulic pipeline assembly airtightness testing device and its operation method with reasonable structural design, good sealing performance during the testing process of the hydraulic pipe assembly, ability to detect multiple hydraulic pipes simultaneously, and high accuracy of the detection results.

[0005] The technical solution adopted to solve the technical problems of the present invention is as follows:

[0006] A hydraulic pipeline assembly airtightness testing device, including a water tank, a first carrying roller, a blower, an adjustment plate and a second carrying roller. A vertical plate and a positioning plate are arranged on the top of the water tank. A top plate is arranged on the top of the vertical plate. A fixing ring is arranged on the positioning plate, and a pushing structure is arranged on the top plate. A blowing structure is arranged on the vertical plate. Through the blowing structure, the hydraulic pipe assembly after airtightness detection can be dried, improving the drying efficiency of the hydraulic pipe assembly. Both ends of the first carrying roller are provided with a first connecting shaft. The first connecting shaft is passed through the fixing ring. A first sealing cylinder is arranged on the first carrying roller, and an inner cavity communicated with the first sealing cylinder is arranged in the first carrying roller. The blower is arranged on the top plate. An air delivery pipe is arranged on the blower. A connecting pipe is arranged on the air delivery pipe, and the connecting pipe is passed through the first connecting shaft and inserted into the inner cavity. The adjustment plate is connected with the pushing structure. The second carrying roller is movably arranged on the adjustment plate, and a second sealing cylinder is arranged on the second carrying roller. According to the size and length of the hydraulic pipe assembly to be subjected to airtightness detection, select the corresponding first and second sealing cylinders. Install the first sealing cylinder on the first carrying roller and the second sealing cylinder on the second carrying roller. Adjust the position of the second carrying roller on the adjustment plate. Insert one end of the hydraulic pipe assembly into the first sealing cylinder and the other end of the hydraulic pipe assembly into the second sealing cylinder. The blower blows air into the inner cavity of the first carrying roller through the air delivery pipe and the connecting pipe. The air in the inner cavity flows into the hydraulic pipe assembly through the through-hole column, increasing the pressure in the hydraulic pipe assembly. The adjustment plate moves vertically under the action of the pushing structure. The adjustment plate drives the second carrying roller to rise or fall, so that the second carrying roller drives one end of the hydraulic pipe assembly to rise or fall, facilitating the inclined entry of the hydraulic pipe assembly into the water in the water tank for airtightness detection and inclined drying treatment, and improving the airtightness detection efficiency of the hydraulic pipe assembly.

[0007] Preferably, the first carrying roller is arranged as a structure that can rotate between the positioning plates through the first connecting shaft. The adjustment plate moves vertically under the action of the pushing structure. The adjustment plate drives the second carrying roller to rise or fall, so that the second carrying roller drives one end of the hydraulic pipe assembly to rise or fall, and the other end of the hydraulic pipe assembly drives the first carrying roller to rotate, facilitating the inclined entry of the hydraulic pipe assembly into the water in the water tank for airtightness detection and inclined drying treatment, and improving the airtightness testing efficiency of the hydraulic pipe assembly.

[0008] Preferably, the pushing structure includes a first hydraulic cylinder. The first hydraulic cylinder is arranged on the top plate. A first piston rod is arranged on the first hydraulic cylinder. The first piston rod is connected with the adjustment plate. Fixing plates are arranged on opposite sides of the adjustment plate, and the second carrying roller is movably arranged between the fixing plates. The adjustment plate moves vertically under the action of the first hydraulic cylinder and the first piston rod. The adjustment plate drives the second carrying roller to rise or fall, so that the second carrying roller drives one end of the hydraulic pipe assembly to rise or fall, facilitating the inclined entry of the hydraulic pipe assembly into the water in the water tank for airtightness detection and inclined drying treatment, and improving the airtightness detection efficiency and drying efficiency of the hydraulic pipe assembly.

[0009] Preferably, a limiting groove is provided on the fixed plate. Connecting shafts II are provided at both ends of the second carrying roller. The connecting shafts II are passed through the limiting groove, and the connecting shafts II are configured to be structures that can adjust their positions within the limiting groove, and the second carrying roller is configured to be a structure that can rotate between the fixed plates. The limiting groove can provide space for the lateral movement of the connecting shafts II, so that the second carrying roller can move laterally between the fixed plates, which can not only achieve the purpose of adjusting the distance between the first sealing cylinder and the second sealing cylinder to be applicable to hydraulic tube assemblies of different lengths, improving the versatility of the testing equipment, but also facilitate the movement of the second carrying roller during the rising or falling process of the hydraulic tube assembly, enabling the hydraulic tube assembly to tilt into the water or be in a tilted state during the drying process, and comprehensively performing airtightness testing on the hydraulic tube assembly or fully drying the hydraulic tube assembly.

[0010] Preferably, the first sealing cylinder on the first carrying roller and the second sealing cylinder on the second carrying roller are configured in a one-to-one correspondence. The first sealing cylinder is configured to be a structure that can be replaced on the first carrying roller, and the second sealing cylinder is configured to be a structure that can be replaced on the second carrying roller. The first sealing cylinder is connected to the first carrying roller by threads, and the second sealing cylinder is connected to the second carrying roller by threads, which is convenient for the installation or replacement of the first sealing cylinder on the first carrying roller and the second sealing cylinder on the second carrying roller. According to hydraulic tube assemblies of different sizes, the corresponding first sealing cylinder and second sealing cylinder are selected, which can not only improve the versatility of the testing equipment, but also improve the sealing performance between the hydraulic tube assembly and the first sealing cylinder and between the hydraulic tube assembly and the second sealing cylinder, thereby improving the accuracy of the airtightness test results. A plurality of first sealing cylinders are provided on the first carrying roller, and second sealing cylinders corresponding to the first sealing cylinders are provided on the second carrying roller, which can simultaneously perform airtightness testing on multiple hydraulic tube assemblies, thereby improving the airtightness testing efficiency of the hydraulic tube assemblies.

[0011] Preferably, a through-hole column is provided inside the first sealing cylinder, and the through-hole column is communicated with the inner cavity of the first carrying roller. A sealing column is provided inside the second sealing cylinder. Sealing layers are provided on both the through-hole column and the sealing column. Through the sealing layers on the through-hole column and the sealing column, the sealing performance between the hydraulic tube assembly and the through-hole column and between the hydraulic tube assembly and the sealing column is further improved, preventing air flow from flowing out between the hydraulic tube assembly and the through-hole column and between the hydraulic tube assembly and the sealing column during the airtightness test process, and thus improving the accuracy of the airtightness test results.

[0012] Preferably, a pressure sensor is provided on the inner wall of the first envelope. A connecting column is provided on the outer wall of the first envelope, and a pressure gauge is provided on the connecting column. The pressure gauge is connected to the pressure sensor. The blower blows air into the inner cavity of the first carrier roller through the air delivery pipe and the connecting pipe. The air in the inner cavity flows into the hydraulic pipe assembly through the through-hole column, increasing the pressure in the hydraulic pipe assembly. The pressure sensor can sense the air pressure in the hydraulic pipe assembly, and the pressure in the hydraulic pipe assembly is reflected on the pressure gauge in real time, facilitating the staff to observe whether the pressure value on the pressure gauge changes during the airtightness test of the hydraulic pipe assembly, so as to determine the airtightness of the hydraulic pipe assembly.

[0013] Preferably, the connecting shaft at one end of the first carrier roller is provided with a hollow structure. The connecting pipe extends into the inner cavity through the hollow connecting shaft, and a sealing ring is provided between the inner wall of the hollow connecting shaft and the outer wall of the connecting pipe. The blower blows air into the inner cavity of the first carrier roller through the air delivery pipe and the connecting pipe. The air in the inner cavity flows into the hydraulic pipe assembly through the through-hole column, increasing the pressure in the hydraulic pipe assembly. An airtightness test is carried out on the hydraulic pipe assembly. The sealing ring can improve the sealing performance between the connecting pipe and the connecting shaft, preventing air from flowing out between the connecting pipe and the connecting shaft, providing sufficient pressure for the airtightness test of the hydraulic pipe assembly, and thus improving the accuracy of the airtightness test result of the hydraulic pipe assembly.

[0014] Preferably, the blowing structure includes a second hydraulic cylinder and a moving plate. The second hydraulic cylinder is provided on the vertical plate, and a second piston rod is provided on the second hydraulic cylinder. The moving plate is connected to the second piston rod. A fixing hole is provided on the moving plate, and an exhaust fan is provided in the fixing hole. After the airtightness of the hydraulic pipe assembly is completed, the second hydraulic cylinder and the second piston rod push the moving plate to move back and forth, and the exhaust fan blows air downward under the moving plate, so that the air dries the hydraulic pipe assembly after the airtightness test. In cooperation with the action of the first hydraulic cylinder, the hydraulic pipe assembly moves up and down during the drying process, quickly drying the hydraulic pipe assembly and improving the work efficiency.

[0015] An operation method for an airtightness test device applicable to a hydraulic pipe assembly, characterized in that the operation method includes the following steps:

[0016] First: Check whether the airtightness test device of the hydraulic pipe assembly is normal, whether the first hydraulic cylinder, the second hydraulic cylinder, the exhaust fan, and the blower can work normally;

[0017] Second: According to the size and length of the hydraulic pipe assembly that needs to be tested for airtightness, select the corresponding sealing cylinder one and sealing cylinder two. Install sealing cylinder one on the carrying roller one, install sealing cylinder two on the carrying roller two, adjust the position of the carrying roller two between the fixed plates, insert one end of the hydraulic pipe assembly into sealing cylinder one, insert the through-hole column in sealing cylinder one into the hydraulic pipe assembly, insert the other end of the hydraulic pipe assembly into sealing cylinder two, and insert the sealing column in sealing cylinder two into the hydraulic pipe assembly;

[0018] Third: Start the blower. The blower blows air into the inner cavity of the carrying roller one through the air duct and the connecting pipe. The air in the inner cavity flows into the hydraulic pipe assembly through the through-hole column, increasing the pressure inside the hydraulic pipe assembly. The pressure sensor can sense the air pressure inside the hydraulic pipe assembly, and the pressure inside the hydraulic pipe assembly is reflected on the pressure gauge in real time;

[0019] Fourth: Start the hydraulic cylinder one. The hydraulic cylinder one and the piston rod one push the adjusting plate to move downward. The adjusting plate drives the fixed plate and the carrying roller two between the fixed plates to move downward, so that the carrying roller two drives the sealing cylinder two and one end of the hydraulic pipe assembly to move downward into the water tank. The carrying roller one rotates between the positioning plates, and the carrying roller two rotates between the fixed plates, tilting the hydraulic pipe assembly between the sealing cylinder two and the sealing cylinder one into the water in the water tank. The hydraulic pipe assembly enters the water in the water tank for airtightness detection. Observe whether there are bubbles emerging on the hydraulic pipe. If there are bubbles, it proves that the airtightness of the hydraulic pipe assembly is not good. Otherwise, the airtightness is good;

[0020] Fifth: After the airtightness detection of the hydraulic pipe assembly is completed, turn off the blower and start the hydraulic cylinder one to lift the adjusting plate, thereby pulling back the hydraulic pipe assembly in the water, and making the hydraulic pipe assembly in a horizontal state or in an inclined state with one end of the sealing cylinder two high and one end of the sealing cylinder one low;

[0021] Sixth: Start the hydraulic cylinder two and the exhaust fan. The hydraulic cylinder two and the piston rod two push the moving plate to move back and forth. The exhaust fan blows air downward under the moving plate, so that the air dries the hydraulic pipe assembly after airtightness detection. With the cooperation of the hydraulic cylinder one, the hydraulic pipe assembly moves up and down during the drying process to quickly dry the hydraulic pipe assembly;

[0022] Seventh: After the hydraulic pipe assembly is dried, stop the hydraulic cylinder one and the hydraulic cylinder two, remove the hydraulic pipe assembly between the sealing cylinder one and the sealing cylinder two, replace it with a new hydraulic pipe assembly and continue the airtightness detection. After the airtightness detection of the hydraulic pipe assembly is completed, clean the impurities generated during the airtightness detection process of the hydraulic pipe assembly and cut off the power supply.

[0023] Beneficial effects:

[0024] 1. The adjustment plate moves vertically under the action of the first hydraulic cylinder and the first piston rod. The adjustment plate drives the second load roller to rise or fall, causing the second load roller to drive one end of the hydraulic pipe assembly to rise or fall, facilitating the inclined entry of the hydraulic pipe assembly into the water in the water tank for airtightness testing and inclined drying treatment, which can improve the airtightness testing efficiency and drying efficiency of the hydraulic pipe assembly;

[0025] 2. According to the hydraulic pipe assemblies of different sizes, the corresponding first sealing cylinder and second sealing cylinder are selected, which can not only improve the versatility of the testing equipment, but also improve the sealing performance between the hydraulic pipe assembly and the first sealing cylinder and between the hydraulic pipe assembly and the second sealing cylinder, thereby improving the accuracy of the airtightness test results. A plurality of first sealing cylinders are arranged on the first load roller, and corresponding second sealing cylinders are arranged on the second load roller, which can simultaneously perform airtightness tests on multiple hydraulic pipe assemblies, thus improving the airtightness testing efficiency of the hydraulic pipe assemblies;

[0026] 3. After the airtightness of the hydraulic pipe assembly is completed, the second hydraulic cylinder and the second piston rod push the moving plate to move back and forth, and the exhaust fan blows air flow below the moving plate, so that the air flow dries the hydraulic pipe assembly after airtightness testing. With the cooperation of the first hydraulic cylinder, the hydraulic pipe assembly moves up and down during the drying process, quickly drying the hydraulic pipe assembly and improving the work efficiency. Brief Description of the Drawings

[0027] Figure 1 is the structural schematic diagram of the present invention.

[0028] Figure 2 is a partial structural schematic diagram of the present invention, showing the connection structure between the first load roller and the first sealing cylinder.

[0029] Figure 3 is a partial structural schematic diagram of the present invention, showing the connection structure between the adjustment plate and the second load roller.

[0030] Figure 4 is a partial structural schematic diagram of the present invention, showing the connection structure between the first sealing cylinder and the through-hole column.

[0031] Figure 5 is a partial structural schematic diagram of the present invention, showing the connection structure between the first connecting shaft and the connecting pipe.

[0032] Figure 6 is a partial structural schematic diagram of the present invention, showing the connection structure between the moving plate and the fan.

[0033] Figure 7 is another implementation structural schematic diagram of the present invention.

[0034] In the figure: 1. water tank, 2. first carrying roller, 3. blower, 4. adjusting plate, 5. second carrying roller, 6. vertical plate, 7. positioning plate, 8. top plate, 9. fixing ring, 10. first hydraulic cylinder, 11. first piston rod, 12. second hydraulic cylinder, 13. moving plate, 14. second piston rod, 15. fixing hole, 16. exhaust fan, 17. first connecting shaft, 18. first sealing cylinder, 19. inner cavity, 20. through-hole column, 21. pressure sensor, 22. connecting column, 23. pressure gauge, 24. sealing layer, 25. air delivery pipe, 26. connecting pipe, 27. sealing ring, 28. fixing plate, 29. limiting groove, 30. second connecting shaft, 31. second sealing cylinder, 32. sealing column, 33. electric heating block, 34. heating rod. Detailed implementation mode

[0035] The present invention will be described in more detail below with reference to the accompanying drawings.

[0036] Embodiment 1:

[0037] As shown in the Figures 1-6 accompanying drawings: A hermeticity testing device for a hydraulic pipeline assembly, comprising a water tank 1, a first carrying roller 2, a blower 3, an adjusting plate 4 and a second carrying roller 5. A vertical plate 6 and a positioning plate 7 are arranged on the top of the water tank 1. A top plate 8 is arranged on the top of the vertical plate 6. A fixing ring 9 is arranged on the positioning plate 7, and a pushing structure is arranged on the top plate 8. A blowing structure is arranged on the vertical plate 6. Both ends of the first carrying roller 2 are provided with a first connecting shaft 17. The first connecting shaft 17 is passed through the fixing ring 9. A first sealing cylinder 18 is arranged on the first carrying roller 2, and an inner cavity 19 communicated with the first sealing cylinder 18 is arranged inside the first carrying roller 2. The blower 3 is arranged on the top plate 8. An air delivery pipe 25 is arranged on the blower 3. A connecting pipe 26 is arranged on the air delivery pipe 25, and the connecting pipe 26 is passed through the first connecting shaft 17 and inserted into the inner cavity 19. The adjusting plate 4 is connected with the pushing structure. The second carrying roller 5 is movably arranged on the adjusting plate 4, and a second sealing cylinder 31 is arranged on the second carrying roller 5.

[0038] Among them, the first carrying roller 2 is arranged as a structure that can rotate between the positioning plate 7 and the positioning plate 7 through the first connecting shaft 17.

[0039] Among them, the pushing structure includes a first hydraulic cylinder 10. The first hydraulic cylinder 10 is arranged on the top plate 8. A first piston rod 11 is arranged on the first hydraulic cylinder 10. The first piston rod 11 is connected with the adjusting plate 4. Fixing plates 28 are arranged on opposite sides of the adjusting plate 4, and the second carrying roller 5 is movably arranged between the fixing plates 28 and the fixing plates 28. Limiting grooves 29 are arranged on the fixing plates 28. Both ends of the second carrying roller 5 are provided with a second connecting shaft 30. The second connecting shaft 30 is passed out of the limiting groove 29, and the second connecting shaft 30 is arranged as a structure that can adjust its position in the limiting groove 29, and the second carrying roller 5 is arranged as a structure that can rotate between the fixing plates 28 and the fixing plates 28.

[0040] Among them, the sealing cylinder 18 on the first carrier roller 2 and the sealing cylinder 31 on the second carrier roller 5 are set in a one-to-one corresponding structure. The sealing cylinder 18 is set to be a replaceable structure on the first carrier roller 2, and the sealing cylinder 31 is set to be a replaceable structure on the second carrier roller 5. A through-hole column 20 is arranged in the sealing cylinder 18, and the through-hole column 20 is communicated with the inner cavity 19 of the first carrier roller 2. A sealing column 32 is arranged in the sealing cylinder 31. Sealing layers 24 are arranged on both the through-hole column 20 and the sealing column 32. A pressure sensor 21 is arranged on the inner wall of the sealing cylinder 18. A connecting column 22 is arranged on the outer wall of the sealing cylinder 18. A pressure gauge 23 is arranged on the connecting column 22, and the pressure gauge 23 is connected to the pressure sensor 21. The connecting shaft 17 at one end of the first carrier roller 2 is set to be a hollow structure. The connecting pipe 26 extends into the inner cavity 19 through the hollow connecting shaft 17, and a sealing ring 27 is arranged between the inner wall of the hollow connecting shaft 17 and the outer wall of the connecting pipe 26.

[0041] Among them, the blowing structure includes a second hydraulic cylinder 12 and a moving plate 13. The second hydraulic cylinder 12 is arranged on the vertical plate 6. A second piston rod 14 is arranged on the second hydraulic cylinder 12. The moving plate 13 is connected to the second piston rod 14. A fixing hole 15 is arranged on the moving plate 13, and an exhaust fan 16 is arranged in the fixing hole 15.

[0042] An operating method for a hydraulic pipeline assembly airtightness testing device, the operating method includes the following steps:

[0043] First: Check whether the hydraulic pipeline assembly airtightness testing device is normal, whether the first hydraulic cylinder 10, the second hydraulic cylinder 12, the exhaust fan 16, and the blower 3 can work normally;

[0044] Second: According to the size and length of the hydraulic pipe assembly that needs to be tested for airtightness, select the corresponding sealing cylinder 18 and sealing cylinder 31. Install the sealing cylinder 18 on the first carrier roller 2, install the sealing cylinder 31 on the second carrier roller 5, adjust the position of the second carrier roller 5 between the fixed plates 28 and 28. Insert one end of the hydraulic pipe assembly into the sealing cylinder 18, insert the through-hole column 20 in the sealing cylinder 18 into the hydraulic pipe assembly, insert the other end of the hydraulic pipe assembly into the sealing cylinder 31, and insert the sealing column 32 in the sealing cylinder 31 into the hydraulic pipe assembly;

[0045] Third: Start the blower 3. The blower 3 blows air into the inner cavity 19 of the first carrier roller 2 through the air delivery pipe 25 and the connecting pipe 26. The air in the inner cavity 19 flows into the hydraulic pipe assembly through the through-hole column 20, increasing the pressure in the hydraulic pipe assembly. The pressure sensor 21 can sense the air pressure in the hydraulic pipe assembly, and the pressure in the hydraulic pipe assembly is reflected on the pressure gauge 23 in real time;

[0046] Fourth: Start hydraulic cylinder 10. Hydraulic cylinder 10 and piston rod 11 push the adjustment plate 4 downward. The adjustment plate 4 drives the fixed plate 28 and the second load roller 5 between the fixed plates 28 downward, so that the second load roller 5 drives one end of the second sealing cylinder 31 and the hydraulic pipe assembly downward into the water tank 1. The first load roller 2 rotates between the positioning plates 7, and the second load roller 5 rotates between the fixed plates 28, tilting the hydraulic pipe assembly between the second sealing cylinder 31 and the first sealing cylinder 18 into the water in the water tank 1. The hydraulic pipe assembly enters the water in the water tank 1 for airtightness detection. Observe whether there are bubbles emerging on the hydraulic pipe. If there are bubbles, it proves that the airtightness of the hydraulic pipe assembly is poor; otherwise, the airtightness is good.

[0047] Fifth: After the airtightness detection of the hydraulic pipe assembly is completed, turn off the blower 3 and start hydraulic cylinder 10 to lift the adjustment plate 4, thereby pulling back the hydraulic pipe assembly in the water and making the hydraulic pipe assembly in a horizontal state or in an inclined state with one end of the second sealing cylinder 31 high and one end of the first sealing cylinder 18 low.

[0048] Sixth: Start hydraulic cylinder 12 and exhaust fan 16. Hydraulic cylinder 12 and piston rod 14 push the moving plate 13 to move back and forth. The exhaust fan 16 blows air flow downward below the moving plate 13, so that the air flow dries the hydraulic pipe assembly after airtightness detection. With the cooperation of the function of hydraulic cylinder 10, the hydraulic pipe assembly moves up and down during the drying process to quickly dry the hydraulic pipe assembly.

[0049] Seventh: After the hydraulic pipe assembly is dried, stop hydraulic cylinder 10 and hydraulic cylinder 12, remove the hydraulic pipe assembly between the first sealing cylinder 18 and the second sealing cylinder 31, replace it with a new hydraulic pipe assembly to continue the airtightness detection. After the airtightness detection of the hydraulic pipe assembly is completed, clean the impurities generated during the airtightness detection process of the hydraulic pipe assembly and cut off the power supply.

[0050] Embodiment 2:

[0051] Based on the function of Embodiment 1, a further description is made. As shown in the attached Figure 7 As shown, for a hydraulic pipeline assembly airtightness test device, an electric heating block 33 is arranged on the inner wall of the fixing hole 15, and a heating rod 34 is arranged between the electric heating blocks 33. During the drying process of the hydraulic pipe assembly after airtightness detection, the heat generated by the heating rod 34 is blown on the hydraulic pipe assembly by the air flow under the action of the exhaust fan 16 to quickly dry the hydraulic pipe assembly and improve the drying efficiency of the hydraulic pipe assembly, thereby being able to improve the efficiency of airtightness detection.

[0052] Working principle: Inject water into the water tank 1. According to the size and length of the hydraulic pipe assembly to be subjected to airtightness detection, select the corresponding sealing cylinder 18 and sealing cylinder 31. Install the sealing cylinder 18 on the bearing roller 1 2, and install the sealing cylinder 31 on the bearing roller 2 5. Adjust the position of the bearing roller 2 5 between the fixed plates 28. Insert one end of the hydraulic pipe assembly into the sealing cylinder 18, insert the through-hole column 20 in the sealing cylinder 18 into the hydraulic pipe assembly, insert the other end of the hydraulic pipe assembly into the sealing cylinder 31, and insert the sealing column 32 in the sealing cylinder 31 into the hydraulic pipe assembly. Start the blower 3. The blower 3 blows air into the inner cavity 19 of the bearing roller 1 2 through the air duct 25 and the connecting pipe 26. The air in the inner cavity 19 flows into the hydraulic pipe assembly through the through-hole column 20, increasing the pressure in the hydraulic pipe assembly. The pressure sensor 21 can sense the air pressure in the hydraulic pipe assembly, and the pressure in the hydraulic pipe assembly is reflected on the pressure gauge 23 in real time. Start the hydraulic cylinder 1 10. The adjusting plate 4 drives the fixed plate 28 and the bearing roller 2 5 between the fixed plates 28 to move downward, so that the bearing roller 2 5 drives the sealing cylinder 31 and one end of the hydraulic pipe assembly to move downward into the water tank 1. The bearing roller 1 2 rotates between the positioning plates 7, and the bearing roller 2 5 rotates between the fixed plates 28, tilting the hydraulic pipe assembly between the sealing cylinder 31 and the sealing cylinder 18 into the water in the water tank 1. The hydraulic pipe assembly enters the water in the water tank 1 for airtightness detection. Observe whether there are bubbles emerging on the hydraulic pipe. If there are bubbles, it proves that the airtightness of the hydraulic pipe assembly is poor. Otherwise, the airtightness is good. After the airtightness detection of the hydraulic pipe assembly is completed, turn off the blower 3, start the hydraulic cylinder 1 10, and lift the adjusting plate 4 to pull back the hydraulic pipe assembly in the water, putting the hydraulic pipe assembly in a horizontal state or in an inclined state with one end of the sealing cylinder 31 high and one end of the sealing cylinder 18 low. Start the hydraulic cylinder 2 12 and the exhaust fan 16. The hydraulic cylinder 2 12 and the piston rod 2 14 push the moving plate 13 to move back and forth. The exhaust fan 16 blows air downward below the moving plate 13, drying the hydraulic pipe assembly after airtightness detection. With the cooperation of the hydraulic cylinder 1 10, the hydraulic pipe assembly moves up and down during the drying process, and the residual water on the surface of the hydraulic pipe assembly flows back and forth, quickly drying the hydraulic pipe assembly. After the hydraulic pipe assembly is dried, replace the new hydraulic pipe assembly and continue with the airtightness detection.

[0053] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

[0054] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0055] Parts not involved in the present invention are the same as the prior art or can be implemented by using the prior art.

Claims

1. A hydraulic pipeline assembly airtightness testing device, comprising a water tank, a first carrying roller, a blower, an adjusting plate and a second carrying roller, characterized in that: A vertical plate and a positioning plate are provided at the top of the water tank. A top plate is provided at the top of the vertical plate. A fixing ring is provided on the positioning plate, and a pushing structure is provided on the top plate. A blowing structure is provided on the vertical plate. Both ends of the first carrying roller are provided with a first connecting shaft. The first connecting shaft is passed through the fixing ring. A first sealing cylinder is provided on the first carrying roller, and a cavity communicating with the first sealing cylinder is provided inside the first carrying roller. The blower is provided on the top plate. An air delivery pipe is provided on the blower. A connecting pipe is provided on the air delivery pipe, and the connecting pipe is passed through the first connecting shaft and inserted into the cavity. The adjusting plate is connected to the pushing structure. The second carrying roller is movably provided on the adjusting plate, and a second sealing cylinder is provided on the second carrying roller.

2. The airtightness testing device for the hydraulic pipeline assembly according to claim 1, wherein: The first carrying roller is configured to be rotatable between the positioning plates through the first connecting shaft.

3. The airtightness testing device for the hydraulic pipeline assembly according to claim 1, characterized in that: The pushing structure includes a first hydraulic cylinder. The first hydraulic cylinder is provided on the top plate. A first piston rod is provided on the first hydraulic cylinder. The first piston rod is connected to the adjusting plate. Fixing plates are provided on opposite sides of the adjusting plate, and the second carrying roller is movably provided between the fixing plates.

4. The airtightness testing device for the hydraulic pipeline assembly according to claim 3, characterized in that: Limiting grooves are provided on the fixing plates. Both ends of the second carrying roller are provided with a second connecting shaft. The second connecting shaft passes through the limiting grooves. The second connecting shaft is configured to be adjustable in position within the limiting grooves, and the second carrying roller is configured to be rotatable between the fixing plates.

5. The airtightness test equipment for the hydraulic pipeline assembly according to claim 1, characterized in that: The first sealing cylinder on the first carrying roller and the second sealing cylinder on the second carrying roller are configured to be in one-to-one correspondence. The first sealing cylinder is configured to be replaceable on the first carrying roller, and the second sealing cylinder is configured to be replaceable on the second carrying roller.

6. The airtightness test equipment for the hydraulic pipeline assembly according to claim 1, characterized in that: A through-hole column is provided inside the first sealing cylinder, and the through-hole column communicates with the cavity of the first carrying roller. A sealing column is provided inside the second sealing cylinder. Sealing layers are provided on both the through-hole column and the sealing column.

7. The airtightness testing device for the hydraulic pipeline assembly according to claim 6, characterized in that: A pressure sensor is provided on the inner wall of the first sealing cylinder. A connecting column is provided on the outer wall of the first sealing cylinder. A pressure gauge is provided on the connecting column, and the pressure gauge is connected to the pressure sensor.

8. The airtightness testing device for the hydraulic pipeline assembly according to claim 1, characterized in that: The first connecting shaft at one end of the first carrying roller is configured to be hollow. The connecting pipe is passed through the hollow first connecting shaft and extended into the cavity, and a sealing ring is provided between the inner wall of the hollow first connecting shaft and the outer wall of the connecting pipe.

9. The airtightness test device for the hydraulic pipeline assembly according to claim 1, characterized in that: The blowing structure includes a second hydraulic cylinder and a moving plate. The second hydraulic cylinder is provided on the vertical plate. A second piston rod is provided on the second hydraulic cylinder. The moving plate is connected to the second piston rod. A fixing hole is provided on the moving plate, and an exhaust fan is provided in the fixing hole.

10. An operating method for an airtightness testing device of a hydraulic pipeline assembly as described in claim 1, characterized in that, The operation method includes the following steps: First: Check whether the airtightness test equipment of the hydraulic pipeline assembly is normal, and whether the first hydraulic cylinder, the second hydraulic cylinder, the exhaust fan, and the blower can work normally; Second: According to the size and length of the hydraulic pipe assembly that needs to be subjected to airtightness detection, select the corresponding sealing cylinder 1 and sealing cylinder 2. Install sealing cylinder 1 on the carrying roller 1, install sealing cylinder 2 on the carrying roller 2, adjust the position of the carrying roller 2 between the fixed plates. Insert one end of the hydraulic pipe assembly into sealing cylinder 1, insert the through-hole column in sealing cylinder 1 into the hydraulic pipe assembly, insert the other end of the hydraulic pipe assembly into sealing cylinder 2, and insert the sealing column in sealing cylinder 2 into the hydraulic pipe assembly; Third: Start the blower. The blower blows air into the inner cavity of the carrying roller 1 through the air delivery pipe and the connecting pipe. The air in the inner cavity flows into the hydraulic pipe assembly through the through-hole column, increasing the pressure inside the hydraulic pipe assembly. The pressure sensor can sense the air pressure inside the hydraulic pipe assembly, and the pressure inside the hydraulic pipe assembly is reflected on the pressure gauge in real time; Fourth: Start the hydraulic cylinder 1. The hydraulic cylinder 1 and the piston rod 1 push the adjusting plate downward. The adjusting plate drives the fixed plate and the carrying roller 2 between the fixed plates downward, so that the carrying roller 2 drives the sealing cylinder 2 and one end of the hydraulic pipe assembly downward into the water tank. The carrying roller 1 rotates between the positioning plates, and the carrying roller 2 rotates between the fixed plates, tilting the hydraulic pipe assembly between the sealing cylinder 2 and the sealing cylinder 1 into the water in the water tank. The hydraulic pipe assembly enters the water in the water tank for airtightness detection. Observe whether there are bubbles emerging from the hydraulic pipe. If there are bubbles, it proves that the airtightness of the hydraulic pipe assembly is not good. Otherwise, the airtightness is good; Fifth: After the airtightness detection of the hydraulic pipe assembly is completed, turn off the blower, start the hydraulic cylinder 1, and lift the adjusting plate, thereby pulling back the hydraulic pipe assembly in the water, putting the hydraulic pipe assembly in a horizontal state or in an inclined state with one end of the sealing cylinder 2 high and one end of the sealing cylinder 1 low; Sixth: Start the hydraulic cylinder 2 and the exhaust fan. The hydraulic cylinder 2 and the piston rod 2 push the moving plate back and forth. The exhaust fan blows air downward under the moving plate, so that the air dries the hydraulic pipe assembly after airtightness detection. With the cooperation of the hydraulic cylinder 1, the hydraulic pipe assembly moves up and down during the drying process to quickly dry the hydraulic pipe assembly; Seventh: After the hydraulic pipe assembly is dried, stop the hydraulic cylinder 1 and the hydraulic cylinder 2, remove the hydraulic pipe assembly between the sealing cylinder 1 and the sealing cylinder 2, replace it with a new hydraulic pipe assembly and continue the airtightness detection. After the airtightness detection of the hydraulic pipe assembly is completed, clean the impurities generated during the airtightness detection process of the hydraulic pipe assembly, and cut off the power supply.

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