Steel pipe pressure resistance detection device

Abstract

The invention discloses a steel pipe pressure resistance detection device, and belongs to the technical field of steel pipe pressure resistance. The device mainly comprises a supporting seat; the detection table is mounted at the upper end of the supporting seat; the detection mechanism is provided with two groups of test boxes, the two groups of test boxes relatively slide on two sides of the upper end of the detection table, and the opposite surfaces of the test boxes are provided with test valves; the bracket is connected between the upper ends of the detection tables in a sliding manner; the fixing mechanism is arranged on one side of the test valve, the fixing mechanism is provided with a base installed on the test box, and a speed reduction air cylinder is installed at the upper end of the base; the transverse rod is installed at the upper end of the speed reduction air cylinder, inclined rods are arranged at the two ends of the transverse rod in a downwards-inclined mode, and a first movable rod and a second movable rod are hinged to the other ends of the inclined rods correspondingly. According to the steel pipe pressure resistance detection device, the stability of the steel pipe during detection is ensured, and the steel pipe is prevented from moving or deforming along with the change of pressure.

Description

Technical Field

[0001] The present application relates to the technical field of steel pipe pressure resistance, and in particular to a steel pipe pressure resistance detection device. Background Art

[0002] Steel pipes have the characteristics of high strength and corrosion resistance. According to different production processes, steel pipes can be divided into two categories: seamless steel pipes and welded steel pipes. In addition, the materials of steel pipes are also diverse, including carbon steel, alloy steel, stainless steel, etc.

[0003] Usually after the steel pipe is manufactured, in order to ensure that the steel pipe can safely withstand various pressure loads in actual use, it is necessary to conduct batch sampling of the steel pipe to test the performance of the steel pipe when it is subjected to a certain pressure to ensure its batch quality.

[0004] The pressure resistance testing methods for steel pipes mainly include water pressure test and air pressure test. The water pressure test usually involves installing test water valves at both ends of the steel pipe to ensure that the joints are sealed, and then gradually applying pressure. Each pressure stage is maintained for a certain period of time to observe the stability of the steel pipe. The air pressure test usually involves installing air pressure test valves on both sides of the steel pipe to ensure that the joints are sealed, and then gradually increasing the pressure for testing.

[0005] Conventional testing devices usually place the steel pipes on the mounting frame when testing batches of steel pipes, and then adjust the air pressure test valves on both sides toward the steel pipe until they are installed at the ends of the steel pipes, and at the same time, the steel pipes are fixed by the clamping force during installation;

[0006] In the process of gradually pressurizing the steel pipe, the steel pipe is prone to move or deform as the pressure changes. It is difficult to ensure the stability of the steel pipe only by the clamping force of the air pressure test valves on both sides. However, the movement or instability of the steel pipe is likely to cause cracks or other damage, causing the steel pipe to leak during the test, affecting the accuracy of the test results. Therefore, it is necessary to provide a steel pipe pressure resistance detection device to solve the above problems.

[0007] It should be noted that the above information disclosed in this background technology section is only for understanding the background technology of the present application concept, and therefore, it may contain information that does not constitute the prior art. Summary of the invention

[0008] Based on the above problems existing in the prior art, the problem to be solved by the present application is: to provide a steel pipe pressure resistance detection device to ensure the stability of the steel pipe during detection and prevent the steel pipe from moving or deforming with changes in pressure.

[0009] The technical solution adopted by the present application to solve the technical problem is: a steel pipe pressure resistance detection device, comprising:

[0010] Support seat;

[0011] A testing platform, which is installed on the upper end of the support base;

[0012] The testing mechanism comprises two groups of test boxes, the two groups of test boxes slide relatively on both sides of the upper end of the testing platform, and a plurality of groups of correspondingly arranged test sealing assemblies are respectively arranged on the opposite surfaces of the two groups of test boxes; the test sealing assemblies comprise sealing joints suitable for sealingly connecting with the ends of the steel pipes to be tested;

[0013] A bracket, the bracket being slidably connected between the upper ends of the detection platform;

[0014] A fixing mechanism, which is arranged on one side of the test sealing assembly, and has:

[0015] A base, which is mounted on the test box, and a deceleration cylinder is mounted on the upper end of the base;

[0016] A cross bar, which is installed at the upper end of the deceleration cylinder, with inclined rods arranged at both ends of the cross bar tilted downward, and the other end of the inclined rod being hinged with a first movable rod and a second movable rod respectively;

[0017] A clamping jaw, the clamping jaw being rotatably connected to the first movable rod and an end of the second movable rod away from the oblique rod;

[0018] A fixing plate is installed on one side of the upper end of the base, and the first movable rod and the second movable rod are rotatably connected to the fixing plate at one end close to the clamping claw.

[0019] Furthermore, an adjustment mechanism is provided below the bracket, and the adjustment mechanism has a base plate arranged on the upper end of the detection platform, a lower connecting frame is fixedly installed on the upper end of the base plate, an upper connecting frame is fixedly installed on the lower end of the bracket, and a first adjustment unit is provided on one side of the lower connecting frame and the upper connecting frame.

[0020] Furthermore, the first adjusting unit has a first adjusting rod hinged on one side of the lower connecting frame, the upper end of the first adjusting rod is hinged on a first vertical rod, the upper end of the first vertical rod is hinged on a first support rod, and the other end of the first support rod is hinged on the upper connecting frame; a second adjusting unit is arranged on the other side of the lower connecting frame and the upper connecting frame, the second adjusting unit is arranged opposite to the first adjusting unit, the second adjusting unit has a second adjusting rod hinged on one end of the lower connecting frame, the upper end of the second adjusting rod is hinged on a second vertical rod, the upper end of the second vertical rod is hinged on a second support rod, and the other end of the second support rod is hinged on one end of the upper connecting frame.

[0021] Furthermore, the second vertical rod and the first vertical rod are vertically arranged, and the second vertical rod and the first vertical rod are rotatably connected to a driving rod, and a first thread groove and a second thread groove are provided on the outer side of the driving rod, and the thread directions of the first thread groove and the second thread groove are opposite, the first vertical rod is threadedly connected to the first thread groove on the driving rod, and the second vertical rod is threadedly connected to the second thread groove on the driving rod, and a handle is fixedly installed on the other end of the driving rod.

[0022] Furthermore, two groups of relative support members are provided on both sides of the lower end of the bracket, and the support members have two groups of relative slide slot platforms fixedly installed on the upper end of the base plate, and the slide slot platforms are penetrated with engaging holes. A slide plate is fixedly installed on the lower end of the bracket, and the slide plate is slidably connected in the two groups of slide slot platforms. Shrinkage holes are opened on both sides of the lower end of the slide plate, and a protrusion is slidably connected in the shrinkage hole, and a compression spring is fixedly installed between the protrusion and the shrinkage hole, and the protrusion and the engaging hole correspond to each other.

[0023] Furthermore, a circular arc angle is provided in the middle of the fixing plate with the axis of the sealing joint of the test sealing assembly as the center, and the circular arc angle is coaxially arranged with the sealing joint of the test sealing assembly.

[0024] Furthermore, a slide rail is horizontally fixedly installed on the upper end of the detection table, a first slider is fixedly installed on the bottom end of the test box, the first slider is slidably connected to the slide rail, a second slider is provided at the lower end of the bracket, the base plate is installed on the upper end of the second slider, the second slider is slidably connected to the slide rail, and the outer side of the second slider is threadedly connected with a bolt.

[0025] Furthermore, the test sealing assembly matches the steel pipe to be tested, and a gas storage tank is fixedly installed at the bottom of the support seat, and the gas storage tank is connected to a pipeline between one of the test sealing assemblies through a pressure pump.

[0026] Furthermore, each of the test sealing components further comprises a control valve, the end of the sealing joint is a conical structure, a sealing member is provided on the outer wall of the conical structure, the conical structure is suitable for extending into the corresponding end of the steel pipe to be tested and being sealed and connected with the end of the steel pipe to be tested when the test box moves, a gas channel is provided in the sealing joint which is suitable for being connected with the inner cavity of the steel pipe to be tested after the test box moves into place, the control valve is installed on the sealing joint and is connected with the gas channel, one of the test sealing components is an air-filling sealing component, the control valve of the air-filling sealing component is connected with the gas storage tank through a pressure pump, and the other test sealing component is a pressure relief sealing component, the control valve of the pressure relief sealing component is connected with the gas pressure relief processing system;

[0027] The gas-entraining seal assembly also includes a pressure sensor mounted on the sealing joint and connected to the gas passage;

[0028] It also includes a controller and an alarm. The controller is connected to a pressure sensor, a pressure pump, a control valve and an alarm. The pressure sensor is suitable for detecting a gas pressure signal in the steel pipe to be tested. The controller is suitable for controlling the action of the control valve and is suitable for controlling the action of the pressure pump and / or the control valve and / or the alarm according to the gas pressure signal fed back by the pressure sensor.

[0029] Furthermore, the method comprises the steps of:

[0030] When testing the steel pipe, first adjust the position of the bracket according to the length of the steel pipe, then place the steel pipe to be tested in the pipe placing groove on the bracket, adjust the test boxes on both sides to move toward the bracket, until the sealing joints of the test sealing assemblies on both sides extend into the corresponding ends of the steel pipe to be tested and are sealed and connected with the ends of the steel pipe to be tested, stop the movement of the test box, start the deceleration cylinder to drive the cross bar to move upward, and at the same time make the first movable rod and the second movable rod drive the clamping claws to rotate inward, so as to complete the clamping of the steel pipe to be tested;

[0031] Then the controller controls the control valve of the gas-filling seal component to open, controls the control valve of the pressure relief seal component to close, and simultaneously controls the pressure pump to pump gas into the steel pipe to be tested. When the gas pressure fed back by the pressure sensor reaches the required pressure test threshold, the control valve of the gas-filling seal component is controlled to close, and the control valve of the pressure relief seal component is kept in a closed state, so that the gas in the steel pipe to be tested is in a pressure-maintaining state. Then, based on whether the gas pressure fed back by the pressure sensor is within the threshold range within a certain period of time, if the fed back gas pressure is within the threshold range, it indicates that the steel pipe to be tested has no leakage. If the fed back gas pressure drops, it indicates that the steel pipe to be tested has leakage, and the controller controls the alarm to sound an alarm.

[0032] After the test is completed, the controller controls the control valve of the pressure relief seal assembly to open, and discharges the gas in the steel pipe to be tested into the gas pressure relief treatment system.

[0033] The beneficial effects of the present application are as follows: a steel pipe pressure resistance testing device provided by the present application completes the clamping of the steel pipe to be tested by being provided with a fixing mechanism and an adjusting mechanism, thereby ensuring the stability of the steel pipe during testing, preventing the steel pipe from moving or deforming with changes in pressure, avoiding leakage of the steel pipe during testing, and improving the accuracy of the test results. At the same time, it is convenient to adjust the height of the bracket to ensure the stability of the bracket when it is raised and lowered, thereby ensuring that steel pipes of different diameters correspond to the height of the test valve during testing, and there is no need to disassemble and replace the bracket, thereby ensuring the detection efficiency.

[0034] In addition to the above-described purposes, features and advantages, the present application also has other purposes, features and advantages. The present application will be further described in detail with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The drawings in the specification, which constitute a part of the present application, are used to provide further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute improper limitations on the present application.

[0036] In the attached picture:

[0037] Figure 1 This is an overall schematic diagram of a steel pipe pressure resistance testing device in this application;

[0038] Figure 2 for Figure 1 A magnified schematic diagram of the middle A area;

[0039] Figure 3 for Figure 2 A separate enlarged schematic diagram of the fixing mechanism;

[0040] Figure 4 for Figure 2 A schematic cross-sectional view of the middle adjustment mechanism;

[0041] Figure 5 for Figure 4 A separate schematic diagram of the middle support;

[0042] Figure 6 for Figure 2 A separate schematic diagram of the test seal assembly;

[0043] Among them, the reference numerals in the figure are:

[0044] 1. Support seat; 11. Test bench; 12. Bracket; 13. Gas tank; 14. Slide rail; 15. Second slide block; 16. Bolt; 17. Crossbeam; 18. Pipe rack; 19. Plate storage slot;

[0045] 2. Testing mechanism; 21. Testing box; 22. Testing sealing assembly; 23. First sliding block;

[0046] 3. Fixing mechanism; 31. Base; 32. Speed ​​reduction cylinder; 33. Crossbar; 34. First movable rod; 35. Clamping claw; 36. Oblique rod; 37. Second movable rod; 38. Fixing plate;

[0047] 4. Adjustment mechanism; 41. Bottom plate; 42. Second adjustment unit; 421. Second adjustment rod; 422. Second vertical rod; 423. Second support rod; 43. First adjustment unit; 431. First adjustment rod; 432. First vertical rod; 433. First support rod; 44. Protective cloth; 45. Upper connecting frame; 46. Lower connecting frame; 47. Drive rod; 48. Handle; 49. Support member; 491. Slide table; 492. Slide plate; 493. Retraction hole; 494. Bump; 495. Compression spring; 496. Engaging hole. DETAILED DESCRIPTION

[0048] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0049] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0050] Embodiment 1: Figure 1-Figure 2 As shown, the present application provides a steel pipe pressure resistance testing device, including a support seat 1, a testing platform 11 is fixedly installed on the upper end of the support seat 1, and a testing mechanism 2 is arranged on the upper end of the testing platform 11. The testing mechanism 2 has two groups of test boxes 21, and the two groups of test boxes 21 are relatively installed on both sides of the upper end of the testing platform 11, and multiple groups of correspondingly arranged test sealing components 22 are respectively arranged on the opposite surfaces of the test boxes 21. The test sealing component 22 includes a sealing joint suitable for sealingly connecting with the end of the steel pipe to be tested; in the present application, the test sealing component 22 matches the steel pipe to be tested, and the test sealing component 22 is detachable and replaceable, and is suitable for performing air pressure testing on steel pipes of different diameters;

[0051] At the same time, a gas storage tank 13 is also fixedly installed at the bottom of the support base 1. The gas storage tank 13 is connected to a pipeline between one of the test sealing components 22 through a pressure pump, and gas is delivered to one of the test sealing components 22 through the gas storage tank 13;

[0052] In order to facilitate the adjustment of the position of the test box 21, a slide rail 14 is horizontally fixedly installed on the upper end of the test platform 11, and a first slider 23 is fixedly installed on the bottom end of the test box 21. The first slider 23 is slidably connected to the slide rail 14. It should be noted that in order to automatically control the movement of the test box 21 on the slide rail 14, a driving device (not shown) is arranged between the test box 21 and the test platform 11. The driving device can be a driving cylinder in the prior art. The driving cylinder is installed at the upper end of the test platform 11, and its driving shaft is fixed to the lower end of the test box 21. Therefore, starting the driving cylinder can drive the test box 21 to slide on the slide rail 14 along with the first slider 23.

[0053] In order to ensure that the steel pipe remains in a horizontal state during inspection, a bracket 12 is provided between the upper ends of the inspection platform 11, and a plurality of groups of pipe placing grooves (not shown in the figure) are provided on the bracket 12. The pipe placing grooves correspond to the test sealing components 22, thereby preventing the steel pipe from being suspended during inspection and ensuring stability during inspection;

[0054] At the same time, a second slider 15 is provided at the lower end of the bracket 12, and the second slider 15 is slidably connected to the slide rail 14, and the outer side of the second slider 15 is threadedly connected to a bolt 16. It can be understood that when the bolt 16 is tightened, the bolt 16 will be pressed against the surface of the slide rail 14, so the second slider 15 is fixed. Therefore, the position of the bracket 12 can be adjusted by the second slider 15 to support steel pipes of different lengths.

[0055] In addition, a storage plate slot 19 is fixedly installed on one side of the testing platform 11, and the storage plate slot 19 is used to temporarily store steel pipes that have passed the inspection. A crossbeam 17 is also fixedly installed on the other side of the testing platform 11. Two sets of pipe racks 18 are slidably connected to the crossbeam 17, and the pipe racks 18 are used to place unqualified steel pipes.

[0056] like Figure 2-Figure 3 As shown, a plurality of fixing mechanisms 3 are arranged on one side of the test seal assembly 22 close to the bracket 12, and the number of the fixing mechanisms 3 is consistent with the number of the test seal assemblies 22. The fixing mechanism 3 has a base 31 fixedly mounted on the test box 21, and a reduction cylinder 32 is fixedly mounted on the upper end of the base 31. The output shaft of the reduction cylinder 32 is arranged upward, and a cross bar 33 is fixedly mounted on the output shaft. The cross bar 33 is arranged parallel to the base 31, and both ends of the cross bar 33 are arranged with inclined rods 36 inclined downward, and the other ends of the inclined rods 36 are respectively hinged with a first movable rod 34 and a second movable rod 37;

[0057] At the same time, the first movable rod 34 and the second movable rod 37 are rotatably connected to the clamping claw 35 at one end away from the inclined rod 36, and a fixing plate 38 is fixedly installed on one side of the upper end of the base 31. The middle of the fixing plate 38 is provided with an arc angle with the axis of the sealing joint of the test sealing assembly 22 as the center of the circle. The arc angle is coaxially arranged with the sealing joint of the test sealing assembly 22. In the present application, the first movable rod 34 and the second movable rod 37 are rotatably connected to the fixing plate 38 at one end close to the clamping claw 35;

[0058] Therefore, when testing the steel pipe, first adjust the position of the bracket 12 according to the length of the steel pipe, and then place the steel pipe to be tested in the pipe groove on the bracket 12. At this time, adjust the test boxes 21 on both sides to move toward the bracket 12 until the sealing joint of the test sealing assembly 22 is sealed and connected to the corresponding end of the steel pipe, and stop moving the test box 21. At this time, start the reduction cylinder 32 to drive the cross bar 33 to move upward, and at the same time, the first movable rod 34 and the second movable rod 37 drive the clamping claw 35 to rotate inward, thereby completing the clamping of the steel pipe to be tested, thereby ensuring the stability of the steel pipe during testing, preventing the steel pipe from moving or deforming with the change of pressure, avoiding leakage of the steel pipe during testing, and improving the accuracy of the test results.

[0059] Embodiment 2: However, in the above embodiment, when testing steel pipes with different diameters, in order to ensure that the steel pipes with different diameters correspond to the height of the sealing joint of the test sealing assembly 22 during the test, it is usually necessary to disassemble and replace the bracket 12, which is not only troublesome and time-consuming, but also prolongs the detection time and affects the detection efficiency. In order to solve the above problems, specifically:

[0060] like Figure 2 and Figure 4 As shown, an adjustment mechanism 4 is further provided between the bracket 12 and the second slider 15, and the adjustment mechanism 4 has a bottom plate 41 fixed to the upper end of the second slider 15, a lower connecting frame 46 is fixedly installed on the upper end of the bottom plate 41, and an upper connecting frame 45 is fixedly installed on the lower end of the bracket 12, and a first adjustment unit 43 is provided on one side of the lower connecting frame 46 and the upper connecting frame 45, and the first adjustment unit 43 has a first adjustment rod 431 hinged to one side of the lower connecting frame 46, and the upper end of the first adjustment rod 431 is hinged to a first vertical rod 432, and the upper end of the first vertical rod 432 is hinged to a first support rod 433, and the other end of the first support rod 433 is hinged to the upper connecting frame 45;

[0061] At the same time, a second adjustment unit 42 is provided on the other side of the lower connecting frame 46 and the upper connecting frame 45. The second adjustment unit 42 is arranged opposite to the first adjustment unit 43. The second adjustment unit 42 has a second adjustment rod 421 hinged to one end of the lower connecting frame 46. The upper end of the second adjustment rod 421 is hinged to a second vertical rod 422. The upper end of the second vertical rod 422 is hinged to a second support rod 423. The other end of the second support rod 423 is hinged to one end of the upper connecting frame 45.

[0062] In the present application, the second vertical rod 422 and the first vertical rod 432 are vertically arranged in a normal state, and the second vertical rod 422 and the first vertical rod 432 are rotatably connected with the driving rod 47. It should be noted that the outer side of the driving rod 47 is provided with a first thread groove and a second thread groove, and the thread directions of the first thread groove and the second thread groove are opposite. The first vertical rod 432 is threadedly connected to the first thread groove on the driving rod 47, and the second vertical rod 422 is threadedly connected to the second thread groove on the driving rod 47.

[0063] In addition, a handle 48 is fixedly installed on the other end of the driving rod 47, so that the driving rod 47 can be driven to rotate by the handle 48. When the driving rod 47 rotates, it will drive the first vertical rod 432 and the second vertical rod 422 to move horizontally on the driving rod 47. In this process, the second adjusting unit 42 and the first adjusting unit 43 will be driven to move closer to or farther away from each other. It can be understood that when the second adjusting unit 42 and the first adjusting unit 43 are close to each other, the bracket 12 will be moved upward, and when the second adjusting unit 42 and the first adjusting unit 43 are away from each other, the bracket 12 will be moved downward.

[0064] In order to ensure the stability of the bracket 12 when it is raised or lowered, Figure 5 As shown, two sets of opposite support members 49 are provided on both sides of the lower end of the bracket 12. The support member 49 has two sets of opposite slide platforms 491 fixedly mounted on the upper end of the bottom plate 41. The slide platforms 491 are penetrated by multiple sets of engaging holes 496.

[0065] At the same time, a slide plate 492 is fixedly installed at the lower end of the bracket 12, and the slide plate 492 is slidably connected in the two sets of slide slots 491. Shrinkage holes 493 are opened on both sides of the lower end of the slide plate 492, and a protrusion 494 is slidably connected in the shrinkage hole 493. A compression spring 495 is fixedly installed between the protrusion 494 and the shrinkage hole 493. The protrusion 494 and the locking hole 496 correspond to each other. In the present application, the protrusion 494 protrudes from the shrinkage hole 493 under normal conditions and is located in the locking hole 496.

[0066] In the present application, the driving rod 47 is located between two sets of support members 49, so the support members 49 will not affect the normal rotation of the driving rod 47, and a protective cloth 44 is installed at the lower end of the outer side of the bracket 12 to prevent dust and other impurities from adhering to the adjustment mechanism 4.

[0067] In summary, if it is necessary to test steel pipes of different diameters, the steel pipe to be tested is placed on the bracket 12, and then the operator drives the driving rod 47 to rotate through the handle 48. When the driving rod 47 rotates, the second adjustment unit 42 and the first adjustment unit 43 are driven to move with each other, thereby driving the bracket 12 to move until the steel pipe is aligned with the fixing mechanism 3, and then the steel pipe is fixed;

[0068] When the bracket 12 moves, the slide plate 492 will move with it. At this time, the protrusion 494 will be squeezed by the slide table 491 and compressed into the contraction hole 493 together with the compression spring 495, and disengaged from the current engaging hole 496. When the slide plate 492 stops, the protrusion 494 will pop out due to the rebound force of the compression spring 495 and be stuck in the corresponding engaging hole 496, thereby ensuring the stability of the bracket 12 during lifting and lowering, thereby ensuring that steel pipes of different diameters correspond to the height of the sealing joint of the test sealing assembly 22 during testing, and there is no need to disassemble and replace the bracket 12, thereby ensuring the detection efficiency.

[0069] Embodiment 3: The structure of the steel pipe pressure resistance detection device of this embodiment is basically the same as that of the embodiment 2, except that: in order to be able to perform pressure resistance detection on the steel pipe to be tested, Figure 6 As shown, each test sealing assembly 22 also includes a control valve, the end of the sealing joint is a conical structure, and a sealing member is provided on the outer wall of the conical structure. The conical structure is suitable for extending into the corresponding end of the steel pipe to be tested and being sealed and connected with the end of the steel pipe to be tested when the test box 21 moves. A gas channel is provided in the sealing joint, which is suitable for being connected with the inner cavity of the steel pipe to be tested after the test box 21 moves into place. The control valve is installed on the sealing joint and is connected to the gas channel. One of the test sealing assemblies 22 is an aeration sealing assembly, and the control valve of the aeration sealing assembly is connected to the gas storage tank 13 through a pressure pump. The other test sealing assembly 22 is a pressure relief sealing assembly, and the control valve of the pressure relief sealing assembly is connected to the gas pressure relief processing system; the aeration sealing assembly also includes a pressure sensor installed on the sealing joint and connected to the gas channel.

[0070] In this embodiment, the steel pipe pressure resistance testing device also includes a controller and an alarm. The controller is connected to a pressure sensor, a pressure pump, a control valve, and an alarm. The pressure sensor is suitable for detecting the gas pressure signal in the steel pipe to be tested. The controller is suitable for controlling the action of the control valve and is suitable for controlling the action of the pressure pump and / or the control valve and / or the alarm according to the gas pressure signal feedback from the pressure sensor.

[0071] In this embodiment, the gas pressure relief processing system is mainly used to process and relieve the pressure of the exhausted gas. The simple structure may include a gas filter and a pressure relief buffer tank. The control valve of the pressure relief sealing assembly is connected to the gas filter, and the gas filter is connected to the pressure relief buffer tank. Of course, the gas pressure relief processing system may also adopt other existing technical structures.

[0072] In this embodiment, when testing the steel pipe, the position of the bracket 12 is first adjusted according to the length of the steel pipe in the manner of the first embodiment, and then the steel pipe to be tested is placed in the pipe placing groove on the bracket 12. At this time, the test boxes 21 on both sides are adjusted to move toward the bracket 12 until the conical structures of the test sealing assemblies 22 on both sides extend into the corresponding ends of the steel pipe to be tested and are sealed and connected with the ends of the steel pipe to be tested. The test box 21 stops moving, and the deceleration cylinder 32 is started at this time to drive the cross bar 33 to move upward, and at the same time, the first movable rod 34 and the second movable rod 37 drive the clamping claw 35 to rotate inward, thereby completing the clamping of the steel pipe to be tested, and then the controller controls the control valve of the gas sealing assembly to open, and controls the control valve of the pressure relief sealing assembly to open. The valve is closed, and at the same time, the pressure pump is controlled to pump gas into the steel pipe to be tested. When the gas pressure fed back by the pressure sensor reaches the required pressure test threshold, the control valve of the gas-filling seal component is controlled to be closed, and the control valve of the pressure relief seal component is kept in a closed state, so that the gas in the steel pipe to be tested is in a pressure-maintaining state. Then, it is determined whether the gas pressure fed back by the pressure sensor is within the threshold range within a certain period of time. If the fed back gas pressure is within the threshold range, it indicates that there is no leakage in the steel pipe to be tested. If the fed back gas pressure drops, it indicates that there is leakage in the steel pipe to be tested, and the controller controls the alarm to sound an alarm. After the test is completed, the controller can control the control valve of the pressure relief seal component to open, and discharge the gas in the steel pipe to be tested into the gas pressure relief treatment system.

[0073] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A steel pipe pressure resistance detection device, characterized in that: include: Support seat (1); A testing platform (11), the testing platform (11) being mounted on the upper end of the support base (1); A detection mechanism (2), the detection mechanism (2) comprising two groups of test boxes (21), the two groups of test boxes (21) relatively sliding on both sides of the upper end of the detection platform (11), and a plurality of groups of correspondingly arranged test sealing components (22) are respectively arranged on opposite surfaces of the two groups of test boxes (21); the test sealing components (22) comprising a sealing joint suitable for sealingly connecting with the end of the steel pipe to be tested; A bracket (12) slidably connected between the upper ends of the detection platform (11); A fixing mechanism (3), the fixing mechanism (3) being arranged on one side of the test sealing assembly (22), the fixing mechanism (3) comprising: A base (31), the base (31) being mounted on the test box (21), and a deceleration cylinder (32) being mounted on the upper end of the base (31); A cross bar (33), the cross bar (33) being mounted on the upper end of the deceleration cylinder (32), with inclined rods (36) being arranged at both ends of the cross bar (33) in a downwardly inclined manner, and the other end of the inclined rod (36) being hingedly connected to a first movable rod (34) and a second movable rod (37); A clamping jaw (35), the clamping jaw (35) being rotatably connected to one end of the first movable rod (34) and the second movable rod (37) away from the inclined rod (36); A fixed plate (38) is mounted on one side of the upper end of the base (31); the first movable rod (34) and the second movable rod (37) are rotatably connected to the fixed plate (38) at one end close to the clamping claw (35).

2. A steel pipe pressure resistance detection device according to claim 1, characterized in that: An adjustment mechanism (4) is arranged below the bracket (12), and the adjustment mechanism (4) comprises a bottom plate (41) arranged at the upper end of the detection platform (11), a lower connecting frame (46) is fixedly mounted on the upper end of the bottom plate (41), an upper connecting frame (45) is fixedly mounted on the lower end of the bracket (12), and a first adjustment unit (43) is arranged on one side of the lower connecting frame (46) and the upper connecting frame (45).

3. A steel pipe pressure resistance detection device according to claim 2, characterized in that: The first adjusting unit (43) comprises a first adjusting rod (431) hinged to one side of the lower connecting frame (46); the upper end of the first adjusting rod (431) is hinged to a first vertical rod (432); the upper end of the first vertical rod (432) is hinged to a first supporting rod (433); the other end of the first supporting rod (433) is hinged to the upper connecting frame (45); a second adjusting unit (42) is arranged on the other side of the lower connecting frame (46) and the upper connecting frame (45); the second adjusting unit (42) is arranged opposite to the first adjusting unit (43); the second adjusting unit (42) comprises a second adjusting rod (421) hinged to one end of the lower connecting frame (46); the upper end of the second adjusting rod (421) is hinged to a second vertical rod (422); the upper end of the second vertical rod (422) is hinged to a second supporting rod (423); the other end of the second supporting rod (423) is hinged to one end of the upper connecting frame (45).

4. A steel pipe pressure resistance detection device according to claim 3, characterized in that: The second vertical rod (422) and the first vertical rod (432) are vertically arranged, and the second vertical rod (422) and the first vertical rod (432) are both rotatably connected with a driving rod (47). A first thread groove and a second thread groove are provided on the outer side of the driving rod (47), and the thread directions of the first thread groove and the second thread groove are opposite. The first vertical rod (432) is threadedly connected to the first thread groove on the driving rod (47), and the second vertical rod (422) is threadedly connected to the second thread groove on the driving rod (47). A handle (48) is fixedly installed on the other end of the driving rod (47).

5. A steel pipe pressure resistance detection device according to claim 4, characterized in that: Two groups of opposing support members (49) are provided on both sides of the lower end of the bracket (12), and the support member (49) has two groups of opposing slide slots (491) fixedly mounted on the upper end of the base plate (41), and a snap-fitting hole (496) is provided through the slide slots (491). A slide plate (492) is fixedly mounted on the lower end of the bracket (12), and the slide plate (492) is slidably connected in the two groups of the slide slots (491). Shrinkage holes (493) are provided on both sides of the lower end of the slide plate (492), and a convex block (494) is slidably connected in the shrinkage hole (493), and a compression spring (495) is fixedly mounted between the convex block (494) and the shrinkage hole (493), and the convex block (494) and the snap-fitting hole (496) correspond to each other.

6. A steel pipe pressure resistance detection device according to claim 1, characterized in that: An arc angle is provided in the middle of the fixing plate (38) with the axis of the sealing joint of the test sealing assembly (22) as the center of the circle, and the arc angle is coaxially arranged with the sealing joint of the test sealing assembly (22).

7. A steel pipe pressure resistance detection device according to claim 2, characterized in that: A slide rail (14) is fixedly installed horizontally on the upper end of the detection table (11), a first slider (23) is fixedly installed on the bottom end of the test box (21), the first slider (23) is slidably connected to the slide rail (14), a second slider (15) is arranged at the lower end of the bracket (12), the bottom plate (41) is installed on the upper end of the second slider (15), the second slider (15) is slidably connected to the slide rail (14), and a bolt (16) is threadedly connected to the outer side of the second slider (15).

8. A steel pipe pressure resistance detection device according to claim 1, characterized in that: The test sealing assembly (22) matches the steel pipe to be tested, and a gas storage tank (13) is fixedly installed at the bottom of the support seat (1), and the gas storage tank (13) is connected to one of the test sealing assemblies (22) through a pipeline via a pressure pump.

9. A steel pipe pressure resistance detection device according to claim 8, characterized in that: Each of the test sealing components (22) further comprises a control valve, the end of the sealing joint is a conical structure, a sealing member is provided on the outer wall of the conical structure, the conical structure is adapted to extend into the corresponding end of the steel pipe to be tested and be sealed and connected with the end of the steel pipe to be tested when the test box (21) moves, a gas passage adapted to be connected with the inner cavity of the steel pipe to be tested after the test box (21) moves into place is provided in the sealing joint, the control valve is mounted on the sealing joint and is connected with the gas passage, one of the test sealing components (22) is an air-filling sealing component, the control valve of the air-filling sealing component is connected with the gas storage tank (13) via a pressure pump, and the other test sealing component (22) is a pressure relief sealing component, the control valve of the pressure relief sealing component is connected with the gas pressure relief processing system; The gas-entraining seal assembly also includes a pressure sensor mounted on the sealing joint and connected to the gas passage; It also includes a controller and an alarm. The controller is connected to a pressure sensor, a pressure pump, a control valve and an alarm. The pressure sensor is suitable for detecting a gas pressure signal in the steel pipe to be tested. The controller is suitable for controlling the action of the control valve and is suitable for controlling the action of the pressure pump and / or the control valve and / or the alarm according to the gas pressure signal fed back by the pressure sensor.

10. A method for testing the steel pipe pressure resistance testing device according to claim 9, characterized in that: The steps of the method include: When testing a steel pipe, first adjust the position of the support (12) according to the length of the steel pipe, then place the steel pipe to be tested in the pipe placement groove on the support (12), adjust the test boxes (21) on both sides to move toward the support (12), until the sealing joints of the test sealing assemblies (22) on both sides extend into the corresponding ends of the steel pipe to be tested and are sealed and connected with the ends of the steel pipe to be tested, stop the movement of the test box (21), start the deceleration cylinder (32) to drive the cross bar (33) to move upward, and at the same time make the first movable rod (34) and the second movable rod (37) drive the clamping claw (35) to rotate inward, thereby completing the clamping of the steel pipe to be tested; Then the controller controls the control valve of the gas-filling seal component to open, controls the control valve of the pressure relief seal component to close, and simultaneously controls the pressure pump to pump gas into the steel pipe to be tested. When the gas pressure fed back by the pressure sensor reaches the required pressure test threshold, the control valve of the gas-filling seal component is controlled to close, and the control valve of the pressure relief seal component is kept in a closed state, so that the gas in the steel pipe to be tested is in a pressure-maintaining state. Then, based on whether the gas pressure fed back by the pressure sensor is within the threshold range within a certain period of time, if the fed back gas pressure is within the threshold range, it indicates that the steel pipe to be tested has no leakage. If the fed back gas pressure drops, it indicates that the steel pipe to be tested has leakage, and the controller controls the alarm to sound an alarm. After the test is completed, the controller controls the control valve of the pressure relief seal assembly to open, and discharges the gas in the steel pipe to be tested into the gas pressure relief treatment system.

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