Pipeline hydraulic explosion-proof test device

Abstract

The application discloses a pipeline hydraulic explosion-proof test device and relates to the technical field of pipeline hydraulic explosion-proof.The application comprises a test box, two sealing covers are fixed on the front face and the back face of a pipeline to be detected in the test box, a pressure relief device is arranged in the test box, the pressure relief device comprises a pressure relief box, a pressure relief tank, a limiting strip and a pressure relief block, the pressure relief tank is fixed on the side, away from the pipeline to be detected, of the sealing cover on the front face of the test box, the bottom surface of the pressure relief box is fixed on the top surface of the pressure relief tank, the limiting strip is fixed on the middle part of the inner wall of the pressure relief box, the pressure relief block is slidably arranged on the inner wall of the pressure relief box, and a pressure relief groove is formed in the upper part of the front face of the pressure relief box.The pressure relief box, the pressure relief tank, the limiting strip and the pressure relief block are matched through the arrangement of the pressure relief device, the purpose of balancing pressure is achieved when the pressure in the pipeline is too large, and the pipeline is prevented from exploding due to high pressure in the pressure test process, so that the safety of personnel is ensured.

Description

Technical Field

[0001] This invention relates to the field of pipeline hydraulic explosion-proof technology, specifically to a pipeline hydraulic explosion-proof testing device. Background Technology

[0002] Hydraulic testing refers to a pressure test conducted on a pressure vessel using a liquid medium. Its purpose is to comprehensively assess the vessel's strength and quality. Hydraulic testing is an essential inspection procedure before pipeline production and installation, serving as a guarantee of pipeline quality during use.

[0003] Patent publication number CN215985496U discloses a pipeline hydraulic testing device, specifically relating to the field of hydraulic testing technology, including a testing frame. A forward and reverse motor is installed on the left side of the testing frame. The forward and reverse motor drives a bidirectional screw to rotate forward, allowing the L-rod to be inserted into the corresponding insertion hole of other required sealing tubes, facilitating the user's replacement of different sealing tubes as needed. When disassembling the pipeline under test, the forward and reverse motor can be restarted, while simultaneously gripping the handles inserted into the outer walls of the sealing tubes at both ends of the pipeline under test and applying force inward. When the forward and reverse motor starts and drives the bidirectional screw to rotate in reverse, the two square nut sleeves will move outward along the bidirectional screw. After the L-rod is removed from the insertion hole, the sealing tube remains sealed at both ends of the pipeline under test, and the sealing tube will be removed from the sleeve rod. Users do not need to worry about hydraulic oil leakage during pipeline disassembly, thus solving the problem of insufficient overall practicality of existing pipeline hydraulic testing devices.

[0004] Currently, pipeline hydraulic testing equipment has the following problems: during the pressure test, high pressure may occasionally cause the pipeline to burst, thus putting the test personnel in danger. Therefore, it is necessary to design an explosion-proof pipeline hydraulic testing device with automatic pressure relief. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a pipeline hydraulic explosion-proof testing device, which solves the problem mentioned in the background art that high pressure can occasionally cause pipeline rupture during pressure testing, thereby endangering test personnel.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a pipeline hydraulic explosion-proof testing device, comprising a test chamber and two sealing covers, the two sealing covers being fixed inside the test chamber to the front and back of the pipeline to be tested. The test chamber is equipped with a pressure relief device, a kinetic device, and a sealing device. The pressure relief device includes a pressure relief box, a pressure relief chamber, a limiting strip, and a pressure relief block. The pressure relief box is fixed to the side of the sealing cover on the front of the test chamber away from the pipeline to be tested. During the pressure test, when the pressure inside the pipeline is too high, liquid will be discharged through the pressure relief box. The bottom surface of the pressure relief box is fixed to the top surface of the pressure relief chamber. The limiting strip is fixed to the middle of the inner wall of the pressure relief box. The pressure relief block is slidably installed around the inner wall of the pressure relief box. Under the pressure difference between the inside and outside of the pipeline, the pressure relief block located above the limiting strip will be lifted. A pressure relief groove is provided on the upper part of the front of the pressure relief box, which serves as the outlet for liquid discharge, thereby achieving pressure balance and preventing the pipeline from exploding due to high pressure during the pressure test, thus avoiding danger to personnel.

[0007] Preferably, the pressure relief device further includes a stud, an adjusting box, a pressure plate, a push plate, and a vertical rod. The adjusting box is fixed to the top of the pressure relief box, and the stud is threadedly connected to the top plate of the adjusting box and penetrates through the top plate. Before pressure testing, the pressure relief level is adjusted via the adjusting box above the pressure relief box. By manually turning the stud, the pressure plate is slidably installed inside the adjusting box at the top. The pressure plate is located on the movement trajectory of the stud, and the stud moves up and down, pressing or releasing the pressure plate. The push plate is slidably installed inside the adjusting box in the middle, and is fixedly connected to the bottom of the pressure plate by a spring. The pressure plate compresses or releases the spring. When the spring is compressed or released, the downward force on the push plate increases or decreases accordingly. One end of the upright is fixed to the bottom surface of the push plate, and the pressure of the push plate on the upright increases or decreases accordingly. The other end of the upright is fixed to the upper surface of the pressure relief block. The upright passes through the top plate of the pressure relief box, and the pressure of the upright on the pressure relief block increases or decreases accordingly. The compression and release of the spring are adjusted by the stud, thereby adjusting the pressure difference required for pipeline pressure relief. This allows for the purpose of adjusting the pressure relief and explosion prevention according to the different pipelines being tested.

[0008] Preferably, the pressure relief device further includes a pressure alarm, which is fixed to the top surface of the inner wall of the pressure relief box and located on the movement trajectory of the pressure relief block. When the pressure relief block is lifted to release pressure, the pressure alarm will be triggered, so that the operator can be more clearly aware that the pressure has reached the standard, thereby reminding the operator to stay away.

[0009] Preferably, the simulated vibration device includes an electric telescopic rod, a displacement block, a displacement cover, a rebound rod, and a rectangular block. The electric telescopic rod is fixed to the top surface of the test chamber via the rectangular block. When the experiment begins, vibration simulation of the pipeline is required to obtain pressure data that more closely approximates extreme usage conditions. At this time, the electric telescopic rod is activated. The right side of the displacement block is fixed to the telescopic end of the electric telescopic rod, and the electric telescopic rod pushes and pulls the displacement block. A through slot is provided on the top of the test chamber. The top of the rebound rod is fixed to the bottom surface of the displacement block, and the rebound rod passes through the through slot on the top of the test chamber. The displacement block pushes and pulls the rebound rod. The displacement cover is fixed to the bottom end of the rebound rod, and the rebound rod pushes and pulls the displacement cover. The rectangular block is fixed to the top surface inside the displacement cover. The displacement cover pushes and pulls the rectangular block, causing the pipeline to swing left and right by the left and right swinging of the rectangular block. This achieves the purpose of shaking the pipeline to approximate extreme usage conditions, making the test data more accurate.

[0010] Preferably, the simulation device further includes a short cube and a triangular block. The short cube is fixed to the top surface inside the test chamber, and the triangular block is fixed to the top surface of the displacement cover. The short cube is located on the displacement trajectory of the triangular block. During the left and right movement of the displacement cover, the triangular block will collide with the short cube, thereby compressing the triangular block. The triangular block drives the displacement cover downward. When the triangular block moves away from the short cube, the rebound rod will drive the displacement cover upward under the action of elastic force, thereby achieving the reciprocating motion of the displacement cover. The displacement cover drives the elastic telescopic rod to move up and down, the elastic telescopic rod drives the fixed ring to move up and down, and the fixed ring drives the pipe to move up and down, thereby further vibrating the pipe, making the simulated situation more extreme and the data more accurate.

[0011] Preferably, the actuation device further includes two elastic telescopic rods and two fixing rings. The two elastic telescopic rods are respectively fixed inside the displacement cover on the left and right sides, and the two fixing rings are respectively fixed to the telescopic ends of the two elastic telescopic rods. The two fixing rings are fixedly connected by two springs. At the same time, the spring between the two fixing rings can not only fix the pipe, but also react and tighten in time when the pipe bursts, preventing the pipe from bursting and flying out.

[0012] Preferably, the sealing device includes two sealing rings, a limiting plate, a vertical block, a concave horizontal bar, two sealing strips (first and second). The two sealing rings are respectively fixed to the sides of the two sealing covers, the two sealing strips (first) are respectively fixed to the inner walls of the two sealing rings, and the two sealing strips (second) are respectively slidably installed on the inner walls of the two sealing rings. The vertical block is fixed to the bottom surface inside the test chamber, and the middle part of the concave horizontal bar is fixed to the top of the vertical block. During the pipeline experiment, due to the reciprocating shaking of the displacement cover, the concave horizontal bar fixed on the vertical block presses against the sides of the sealing strips (second). The two ends of the concave horizontal bar are respectively located on the movement trajectories of the two sealing strips (second). The limiting plate is slidably installed on the inner wall of the displacement cover. Under the obstruction of the limiting plate, the sealing strips (second) slide inside the sealing rings and press against the sealing strips (first), thereby helping the sealing cover to seal more tightly and preventing the pipeline from leaking pressure at the joint due to poor sealing, which would lead to incorrect experimental results.

[0013] Preferably, the sealing device further includes a water collection box and a liquid alarm box. The liquid alarm box is fixed to the bottom surface inside the test chamber, and the water collection box is fixed to the top surface of the liquid alarm box. The water collection box is located below the sealing ring. When there is a problem with the sealing at the pipe interface, liquid will flow out from below the sealing ring. The liquid is collected by the water collection box located below the sealing ring and flows into the liquid alarm box. When liquid leaks out and is collected, the liquid alarm box will sound an alarm to remind the staff, who can stop the experiment in time and reseal it.

[0014] This invention provides a hydraulic explosion-proof testing device for pipelines. It has the following beneficial effects:

[0015] (1) The present invention, through the setting of the pressure relief device, enables the pressure relief box, pressure relief chamber, limit strip and pressure relief block to cooperate. During the pressure test, when the pressure in the pipeline is too high, the pressure relief groove opened on the front of the pressure relief box will become the outlet for liquid discharge, thereby achieving the purpose of balancing the pressure and preventing the pipeline from exploding due to high pressure during the pressure test, which would endanger personnel. The stud, adjusting box, pressure plate, push plate and upright are coordinated to adjust the pressure difference required for pipeline pressure relief, so as to achieve the purpose of adjusting the pressure relief and explosion prevention according to the different pipelines to be tested. Through the setting of the pressure alarm, when the pressure relief block is lifted to relieve pressure, the pressure alarm will be triggered, so that the operator can know more clearly that the pressure has reached the standard, thereby reminding the operator to take shelter.

[0016] (2) The present invention, through the setting of the simulation device, through the cooperation of electric telescopic rod, displacement block, displacement cover, rebound rod and rectangular block, makes the pipe swing left and right, so as to shake the pipe to make the pipe close to the extreme use situation, and make the test data more accurate; through the cooperation of short square block and triangular block, the pipe is further vibrated, making the simulated situation more extreme and the data more accurate; through the setting of two elastic telescopic rods and two fixing rings, not only can the pipe be fixed, but when the pipe bursts, it can also react and tighten in time to prevent the pipe from bursting and flying out.

[0017] (3) The present invention, through the setting of the sealing device, enables the two sealing rings, the limiting plate, the upright block, the concave crossbar, the two sealing strips one and the two sealing strips two to cooperate, which helps the sealing cover to seal more tightly and prevents the pipeline from leaking pressure at the joint due to the loose seal, thus causing the experimental results to be incorrect; through the setting of the water collection box and the liquid alarm box, when liquid leaks out and is collected, the liquid alarm box will alarm to remind the staff, and the staff can stop the experiment in time and re-seal it. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the entire invention;

[0019] Figure 2 This is a schematic diagram of the pressure relief device of the present invention;

[0020] Figure 3 This is a schematic diagram of the internal structure of the pressure relief device of the present invention;

[0021] Figure 4 This is a schematic diagram of the actuation device of the present invention;

[0022] Figure 5 This is a cross-sectional schematic diagram of the actuation device of the present invention;

[0023] Figure 6 This is a schematic diagram of the sealing device of the present invention;

[0024] Figure 7 This is a partial schematic diagram of the sealing device of the present invention.

[0025] In the diagram: 11. Test chamber; 12. Sealing cover; 2. Pressure relief device; 3. Motion device; 4. Sealing device; 21. Stud; 22. Adjustment box; 23. Pressure relief box; 24. Pressure relief chamber; 25. Pressure plate; 26. Push plate; 27. Upright rod; 28. Press alarm; 29. ​​Limiting strip; 210. Pressure relief block; 31. Electric telescopic rod; 32. Displacement block; 33. Displacement cover; 34. Elastic telescopic rod; 35. Rebound rod; 36. Short square; 37. Triangular block; 38. Rectangular block; 39. Fixing ring; 41. Sealing ring; 43. Water receiving box; 44. Liquid alarm box; 45. Limiting plate; 46. Upright block; 47. Concave crossbar; 48. Sealing strip one; 49. Sealing strip two. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0027] Please see Figure 1-7 This invention provides a technical solution: a hydraulic explosion-proof testing device for pipelines, comprising a test chamber 11 and two sealing covers 12. The two sealing covers 12 are fixed inside the test chamber 11 on the front and back of the pipeline to be tested. The test chamber 11 is equipped with a pressure relief device 2, a quasi-moving device 3, and a sealing device 4. The pressure relief device 2 includes a pressure relief box 23, a pressure relief chamber 24, a limiting strip 29, and a pressure relief block 210. The pressure relief chamber 24 is fixed on the side of the sealing cover 12 on the front of the test chamber 11 away from the pipeline to be tested. During the pressure test, when the pressure inside the pipeline is too high... The liquid will be discharged through the pressure relief box 24. The bottom surface of the pressure relief box 23 is fixed to the top surface of the pressure relief box 24. The limiting strip 29 is fixed to the middle of the inner wall of the pressure relief box 23. The pressure relief block 210 is slidably installed on the inner wall of the pressure relief box 23. Under the action of the pressure difference between the inside and outside of the pipeline, the pressure relief block 210 located above the limiting strip 29 will be lifted. A pressure relief groove is opened on the upper part of the front of the pressure relief box 23. The pressure relief groove opened on the front of the pressure relief box 23 will become the outlet for liquid discharge, thereby achieving the purpose of balancing pressure and preventing the pipeline from exploding due to high pressure during the pressure test, which would endanger personnel.

[0028] The pressure relief device 2 also includes a stud 21, an adjusting box 22, a pressure plate 25, a push plate 26, and a vertical rod 27. The adjusting box 22 is fixed to the top of the pressure relief box 23. The stud 21 is threadedly connected to the top plate of the adjusting box 22 and passes through the top plate of the adjusting box 22. Before pressure testing, the pressure relief level is adjusted through the adjusting box 22 above the pressure relief box 23. By manually turning the stud 21, the pressure plate 25 is slidably installed inside the adjusting box 22. The pressure plate 25 is located on the movement trajectory of the stud 21. The stud 21 moves up and down, pressing or releasing the pressure plate 25. The push plate 26 is slidably installed in the middle inside the adjusting box 22. The push plate 26 is fixedly connected to the pressure plate by a spring. Below 25, the pressure plate 25 compresses or releases the spring. When the spring is compressed or released, the downward force on the push plate 26 increases or decreases accordingly. One end of the upright rod 27 is fixed to the bottom surface of the push plate 26, and the pressure of the push plate 26 on the upright rod 27 increases or decreases accordingly. The other end of the upright rod 27 is fixed to the upper surface of the pressure relief block 210. The upright rod 27 passes through the top plate of the pressure relief box 23, and the pressure of the upright rod 27 on the pressure relief block 210 increases or decreases accordingly. The compression and release of the spring are adjusted by the stud 21, thereby adjusting the pressure difference required for pipeline pressure relief. This achieves the purpose of adjusting the pressure relief and explosion prevention according to the different pipelines to be tested.

[0029] The pressure relief device 2 also includes a pressure alarm 28, which is fixed on the top surface of the inner wall of the pressure relief box 23. The pressure alarm 28 is located on the movement trajectory of the pressure relief block 210. When the pressure relief block 210 is lifted to relieve pressure, the pressure alarm 28 will be triggered, so that the operator can be more clearly aware that the pressure has reached the standard, thereby reminding the operator to stay away.

[0030] The simulation device 3 includes an electric telescopic rod 31, a displacement block 32, a displacement cover 33, a rebound rod 35, and a rectangular block 38. The electric telescopic rod 31 is fixed to the top surface of the test chamber 11 by the rectangular block. When the experiment begins, vibration simulation of the pipeline is required to obtain pressure data that more closely approximates the pipeline under extreme usage conditions. At this time, the electric telescopic rod 31 is activated, and the right side of the displacement block 32 is fixed to the telescopic end of the electric telescopic rod 31. The electric telescopic rod 31 pushes and pulls the displacement block 32. A through groove is provided on the top of the test chamber 11. The top of the rebound rod 35 is fixed to the bottom surface of the displacement block 32. The rebound rod 35 passes through the through slot at the top of the test chamber 11. The displacement block 32 pushes and pulls the rebound rod 35. The displacement cover 33 is fixed to the bottom of the rebound rod 35. The rebound rod 35 pushes and pulls the displacement cover 33. The rectangular block 38 is fixed to the top surface inside the displacement cover 33. The displacement cover 33 pushes and pulls the rectangular block 38. By swinging the rectangular block 38 left and right, the pipe swings left and right, so as to shake the pipe and make the pipe close to the extreme use conditions, so as to make the test data more accurate.

[0031] The simulation device 3 also includes a short cube 36 and a triangular block 37. The short cube 36 is fixed to the top surface inside the test chamber 11, and the triangular block 37 is fixed to the top surface of the displacement cover 33. The short cube 36 is located on the displacement trajectory of the triangular block 37. During the left and right movement of the displacement cover 33, the triangular block 37 will collide with the short cube 36, thereby causing the triangular block 37 to be squeezed. The triangular block 37 drives the displacement cover 33 downward. When the triangular block 37 moves away from the short cube 36, the rebound rod 35 will drive the displacement cover 33 upward under the action of elastic force, thereby achieving the reciprocating motion of the displacement cover 33. The displacement cover 33 drives the elastic telescopic rod 34 to move up and down. The elastic telescopic rod 34 drives the fixed ring 39 to move up and down. The fixed ring 39 drives the pipe to move up and down, thereby further vibrating the pipe, making the simulation situation more extreme and the data more accurate.

[0032] The actuation device 3 also includes two elastic telescopic rods 34 and two fixing rings 39. The two elastic telescopic rods 34 are fixed inside the displacement cover 33 on the left and right sides respectively. The two fixing rings 39 are fixed to the telescopic ends of the two elastic telescopic rods 34 respectively. The two fixing rings 39 are fixedly connected by two springs. At the same time, the spring between the two fixing rings 39 can not only fix the pipe, but also react and tighten in time when the pipe bursts, preventing the pipe from bursting and flying out.

[0033] The sealing device 4 includes two sealing rings 41, a limiting plate 45, a vertical block 46, a concave crossbar 47, two sealing strips 48 and 49. The two sealing rings 41 are fixed to the sides of the two sealing covers 12, the two sealing strips 48 are fixed to the inner walls of the two sealing rings 41, and the two sealing strips 49 are slidably installed on the inner walls of the two sealing rings 41. The vertical block 46 is fixed to the bottom surface inside the test chamber 11, and the middle of the concave crossbar 47 is fixed to the top of the vertical block 46. In the pipeline experiment, because of the position... The reciprocating swaying of the displacement cover 33 causes the concave horizontal bar 47 fixed on the upright block 46 to press against the side of the second sealing strip 49. The two ends of the concave horizontal bar 47 are respectively located on the movement trajectory of the two second sealing strips 49. The limiting plate 45 is slidably installed on the inner wall of the displacement cover 33. Under the obstruction of the limiting plate 45, the second sealing strip 49 slides inside the sealing ring 41 and presses against the first sealing strip 48, thereby helping the sealing cover 12 to seal more tightly and preventing the pipeline from leaking pressure at the joint due to poor sealing, which would lead to incorrect experimental results.

[0034] The sealing device 4 also includes a water collection box 43 and a liquid alarm box 44. The liquid alarm box 44 is fixed to the bottom surface inside the test chamber 11, and the water collection box 43 is fixed to the top surface of the liquid alarm box 44. The water collection box 43 is located below the sealing ring 41. When there is a problem with the sealing at the pipe interface, liquid will flow out from below the sealing ring 41 and be collected by the water collection box 43 located below the sealing ring 41. The collected liquid will flow into the liquid alarm box 44. When liquid leaks out and is collected, the liquid alarm box 44 will alarm to remind the staff, who can stop the experiment in time and reseal it.

[0035] During use, when the pressure inside the pipeline is too high during the pressure test, the liquid will be discharged through the pressure relief box 24. Under the pressure difference between the inside and outside of the pipeline, the pressure relief block 210 located above the limit bar 29 will be lifted, and the pressure relief groove on the front of the pressure relief box 23 will become the outlet for liquid discharge, thereby achieving the purpose of balancing the pressure and preventing the pipeline from exploding due to high pressure during the pressure test, which could lead to personnel danger. Before the pressure test, the pressure relief level can be adjusted by adjusting the adjustment box 22 above the pressure relief box 23. By manually turning the stud 21, the stud 21 moves up and down, pressing or releasing the pressure plate 25. The pressure plate 25 causes the spring to compress. When the spring is compressed or released, the downward force on the push plate 26 increases or decreases accordingly, the pressure of the push plate 26 on the upright rod 27 increases or decreases accordingly, and the pressure of the upright rod 27 on the pressure relief block 210 increases or decreases accordingly. The compression and release of the spring are adjusted by the stud 21, thereby adjusting the pressure difference required for pipeline pressure relief. This allows for the purpose of adjusting the pressure relief and explosion prevention according to the different pipelines being tested. At the same time, when the pressure relief block 210 is lifted to relieve pressure, it will trigger the pressure alarm 28, so that the operator is more clearly aware that the pressure has reached the standard, thereby reminding the operator to take shelter.

[0036] Once the experiment begins, vibration simulation of the pipeline is required to obtain pressure data that more closely approximates extreme usage conditions. At this point, the electric telescopic rod 31 is activated. The electric telescopic rod 31 pushes and pulls the displacement block 32, the displacement block 32 pushes and pulls the rebound rod 35, the rebound rod 35 pushes and pulls the displacement cover 33, and the displacement cover 33 pushes and pulls the rectangular block 38. The rectangular block 38 swings left and right, causing the pipeline to swing left and right, achieving the purpose of shaking the pipeline to approximate extreme usage conditions, thus making the test data more accurate. During the left and right movement of the displacement cover 33, the triangular block 37 will collide with the short block 36, causing the triangular block 37 to be compressed. Block 37 drives the displacement cover 33 downward. When the triangular block 37 moves away from the short square block 36, the rebound rod 35 will drive the displacement cover 33 upward under the action of elastic force, thereby achieving the reciprocating motion of the displacement cover 33. The displacement cover 33 drives the elastic telescopic rod 34 to move up and down. The elastic telescopic rod 34 drives the fixed ring 39 to move up and down. The fixed ring 39 drives the pipe to move up and down, thereby further vibrating the pipe, making the simulation situation more extreme and the data more accurate. At the same time, the spring between the two fixed rings 39 can not only fix the pipe, but also react and tighten in time when the pipe bursts, preventing the pipe from bursting and flying out.

[0037] During the pipeline experiment, due to the reciprocating swaying of the displacement cover 33, the concave crossbar 47 fixed on the vertical block 46 presses against the side of the sealing strip 49. Under the obstruction of the limiting plate 45, the sealing strip 49 slides inside the sealing ring 41 and presses against the sealing strip 48, thereby helping the sealing cover 12 to seal more tightly and preventing the pipeline from leaking pressure at the joint due to poor sealing, which would lead to incorrect experimental results. At the same time, when there is a problem with the sealing at the pipeline joint, liquid will flow out from below the sealing ring 41 and be collected by the water collection box 43 set below the sealing ring 41. The collected liquid will flow into the liquid alarm box 44. When liquid leaks out and is collected, the liquid alarm box 44 will sound an alarm to remind the staff, who can stop the experiment in time and re-seal it.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0039] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A hydraulic explosion-proof testing device for pipelines, comprising a test chamber (11) and two sealing covers (12), wherein the two sealing covers (12) are fixed inside the test chamber (11) on the front and back sides of the pipeline to be tested, characterized in that: The test chamber (11) is equipped with a pressure relief device (2), a kinetic device (3) and a sealing device (4). The pressure relief device (2) includes a pressure relief box (23), a pressure relief chamber (24), a limiting strip (29) and a pressure relief block (210). The pressure relief box (24) is fixed on the side of the sealing cover (12) on the front of the test chamber (11) away from the pipe to be tested. The bottom surface of the pressure relief box (23) is fixed on the top surface of the pressure relief box (24). The limiting strip (29) is fixed in the middle of the inner wall of the pressure relief box (23). The pressure relief block (210) is slidably installed on the inner wall of the pressure relief box (23). A pressure relief groove is opened on the upper part of the front of the pressure relief box (23). The simulated motion device (3) includes an electric telescopic rod (31), a displacement block (32), a displacement cover (33), a rebound rod (35), and a rectangular block (38). The electric telescopic rod (31) is fixed to the top surface of the test chamber (11) by the rectangular block. The right side of the displacement block (32) is fixed to the telescopic end of the electric telescopic rod (31). The electric telescopic rod (31) pushes and pulls the displacement block (32). A through slot is provided on the top of the test chamber (11). The top of the rebound rod (35) is fixed to the bottom surface of the displacement block (32). The displacement block (32) pushes and pulls the rebound rod (35), the rebound rod (35) passes through the through slot at the top of the test chamber (11), the displacement cover (33) is fixed at the bottom of the rebound rod (35), the rebound rod (35) pushes and pulls the displacement cover (33), the rectangular block (38) is fixed inside the top surface of the displacement cover (33), the displacement cover (33) pushes and pulls the rectangular block (38), and by swinging the rectangular block (38) left and right, the pipe swings left and right, so as to shake the pipe and make the pipe approach extreme use conditions; The motion-simulating device (3) also includes a short cube (36) and a triangular block (37). The short cube (36) is fixed on the top surface inside the test chamber (11), and the triangular block (37) is fixed on the top surface of the displacement cover (33). The short cube (36) is located on the displacement trajectory of the triangular block (37). The motion device (3) also includes two elastic telescopic rods (34) and two fixing rings (39). The two elastic telescopic rods (34) are fixed inside the displacement cover (33) on the left and right sides respectively. The two fixing rings (39) are fixed to the telescopic ends of the two elastic telescopic rods (34) respectively. The two fixing rings (39) are fixedly connected by two springs.

2. The pipeline hydraulic explosion-proof testing device according to claim 1, characterized in that: The pressure relief device (2) further includes a stud (21), an adjusting box (22), a pressure plate (25), a push plate (26), and a vertical rod (27). The adjusting box (22) is fixed to the top of the pressure relief box (23). The stud (21) is threadedly connected to the top plate of the adjusting box (22) and penetrates the top plate of the adjusting box (22). The pressure plate (25) is slidably installed inside the adjusting box (22) and located on the movement trajectory of the stud (21). The push plate (26) is slidably installed in the middle inside the adjusting box (22) and is fixedly connected to the pressure plate (25) below by a spring. One end of the vertical rod (27) is fixed to the bottom surface of the push plate (26), and the other end of the vertical rod (27) is fixed to the upper surface of the pressure relief block (210). The vertical rod (27) penetrates the top plate of the pressure relief box (23).

3. The pipeline hydraulic explosion-proof testing device according to claim 1, characterized in that: The pressure relief device (2) also includes a pressure alarm (28), which is fixed on the top surface of the inner wall of the pressure relief box (23) and is located on the movement trajectory of the pressure relief block (210).

4. The pipeline hydraulic explosion-proof testing device according to claim 1, characterized in that: The sealing device (4) includes two sealing rings (41), a limiting plate (45), a vertical block (46), a concave crossbar (47), two sealing strips (48) and two sealing strips (49). The two sealing rings (41) are fixed to the sides of the two sealing covers (12), the two sealing strips (48) are fixed to the inner walls of the two sealing rings (41), the two sealing strips (49) are slidably installed on the inner walls of the two sealing rings (41), the limiting plate (45) is slidably installed on the inner wall of the displacement cover (33), the vertical block (46) is fixed to the bottom surface inside the test chamber (11), the middle part of the concave crossbar (47) is fixed to the top of the vertical block (46), and the two ends of the concave crossbar (47) are respectively located on the movement trajectory of the two sealing strips (49).

5. The pipeline hydraulic explosion-proof testing device according to claim 4, characterized in that: The sealing device (4) also includes a water receiving box (43) and a liquid alarm box (44). The liquid alarm box (44) is fixed on the bottom surface inside the test chamber (11), and the water receiving box (43) is fixed on the top surface of the liquid alarm box (44). The water receiving box (43) is located below the sealing ring (41).

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