A reliable pressure pipeline strength testing device

Abstract

This invention relates to the technical field of pipeline testing, and in particular to a reliable pressure pipeline strength testing device. Its structure is simple, and it can automatically shield the area around the pipeline before testing, improving the safety factor. It includes a base, a portal plate fixed to the top of the base, a hydraulic cylinder fixed to the portal plate, and a test head for testing compressive strength at the output end of the hydraulic cylinder. A moving mechanism is provided on the top of the base, with a moving platform at the output end. A placement seat for placing the pressure pipeline to be tested is fixed on the top of the moving platform. A transparent plate slides vertically on the side of the base, and a driving mechanism for raising and lowering the transparent plate is also included.

Description

Technical Field

[0001] This invention relates to the technical field of pipeline testing, and in particular to a reliable pressure pipeline strength testing device. Background Technology

[0002] Pressure pipelines in the field of special equipment refer to tubular equipment used to transport gas or liquid under certain pressure. The scope is defined as pipelines with a maximum working pressure greater than or equal to 0.1 MPa (gauge pressure) for gas, liquefied gas, steam, or flammable, explosive, toxic, corrosive liquid media with a maximum working temperature higher than or equal to the standard boiling point, and with a nominal diameter greater than 25 mm.

[0003] After production, pressure pipelines need to undergo pressure strength testing to determine if they meet the required standards. However, current technology lacks appropriate safety measures during pressure strength testing, which could potentially cause injury to nearby operators and property damage should a pressure pipeline burst. Therefore, this issue needs to be addressed and improved. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides a reliable pressure pipeline strength testing device with simple structure and convenient operation. Before testing, it can automatically shield the area around the pipeline to improve the safety factor.

[0005] The present invention provides a reliable pressure pipeline strength testing device, comprising a base, a portal plate fixed on the top of the base, a hydraulic cylinder fixed on the portal plate, and a test head for testing pressure resistance at the output end of the hydraulic cylinder;

[0006] A moving mechanism is provided on the top of the base, and the output end of the moving mechanism is a moving platform. A placement seat for placing the pressure pipeline to be tested is fixed on the top of the moving platform.

[0007] The base has a transparent plate that slides vertically on its side, and also includes a drive mechanism for raising and lowering the transparent plate.

[0008] Furthermore, the driving mechanism includes a rotating shaft rotatably connected to the base, a rotating shaft fixedly connected to one end of a swing arm, the other end of the swing arm being rotatably connected to one end of a swing arm, and the other end of the swing arm being rotatably connected to a transparent plate.

[0009] Furthermore, the drive mechanism also includes a shaft tube fixedly connected to the rotating shaft, the shaft tube having a helical hole, and a drive shaft fixed at the bottom end of the moving table, the drive shaft passing through the helical hole.

[0010] Furthermore, it also includes a telescopic assembly for vertically sliding the transparent panel;

[0011] The telescopic assembly includes a swing arm three that is rotatably connected to the base, a swing arm four that is rotatably connected to the swing arm three, and a transparent plate that is rotatably connected to the swing arm four.

[0012] Two swing arms are symmetrically arranged for both swing arm three and swing arm four, with the two swing arms three located on either side of swing arm one.

[0013] Furthermore, the moving mechanism includes a lead screw that is rotatably connected to the base, and the lead screw is threadedly connected to the moving table;

[0014] It also includes two rails fixed to the top of the base, which are slidably connected to the moving platform.

[0015] Furthermore, the top of the placement seat has an arc-shaped notch on its inner wall, and a clamping mechanism is provided on the top of the placement seat.

[0016] Furthermore, the clamping mechanism includes a second lead screw that is rotatably connected to the top of the moving platform. The second lead screw has positive and negative threads, and both the positive and negative threads are threaded to a slider. Clamping plates are fixed at both ends of the slider.

[0017] The clamping mechanism also includes a second track that is fixedly connected to the top of the moving platform, and a second slider that is slidably connected to the second track.

[0018] Furthermore, a straight hole is also provided at one end of the spiral hole, and the straight hole is parallel to the axis of the shaft tube.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: Before testing, the pipeline under test is located on the side of the test head, which increases the space for picking up and placing the pipeline. During the test, the pipeline under test can automatically move to the bottom of the test head. In this process, the transparent plate can automatically move upward to cover the area in front of the pipeline, preventing injury to the human body if the pipeline is crushed. Attached Figure Description

[0020] Figure 1 This is a top-view structural diagram of the present invention;

[0021] Figure 2 This is a structural schematic diagram of the present invention viewed from below;

[0022] Figure 3 yes Figure 2 A structural diagram from the right side;

[0023] The following are labels in the attached diagram: 1. Base; 2. Portal plate; 3. Hydraulic cylinder; 4. Test head; 5. Moving stage; 6. Placement seat; 7. Transparent plate; 8. Rotating shaft; 9. Swing arm one; 10. Swing arm two; 11. Shaft tube; 12. Spiral hole; 13. Drive shaft; 14. Swing arm three; 15. Swing arm four; 16. Lead screw one; 17. Rail one; 18. Notch; 19. Lead screw two; 20. Slider; 21. Rail two; 22. Straight hole. Detailed Implementation

[0024] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0025] like Figures 1 to 3 As shown, a reliable pressure pipeline strength testing device of the present invention includes a base 1, a portal plate 2 fixed on the top of the base 1, a hydraulic cylinder 3 fixed on the portal plate 2, and a test head 4 for testing the compressive strength at the output end of the hydraulic cylinder 3.

[0026] A moving mechanism is provided on the top of the base 1. The output end of the moving mechanism is a moving platform 5. A placement seat 6 for placing the pressure pipeline to be tested is fixed on the top of the moving platform 5.

[0027] A transparent plate 7 slides vertically on the side of the base 1. The transparent plate 7 is door-shaped and also includes a drive mechanism for driving the transparent plate 7 to move up and down.

[0028] In this embodiment, as shown in the figure, the pipe to be tested is placed on the placement seat 6. Then, the moving mechanism is operated to move the moving platform 5, the placement seat 6, and the pipe to be tested directly below the test head 4. During this process, the drive mechanism moves the transparent plate 7 vertically upward to block the area in front of the pipe to be tested. Then, the hydraulic cylinder 3 is operated to lower the test head 4 for testing. Even if the pipe breaks, the transparent plate 7 can block the broken parts. At the same time, the operator can observe the test status of the pipe through the transparent plate 7.

[0029] Furthermore, the driving mechanism includes a rotating shaft 8 rotatably connected to the base 1, a rotating shaft 8 fixedly connected to one end of a swing arm 9, a swing arm 10 rotatably connected to one end of the other end of the swing arm 9, and a transparent plate 7 rotatably connected to the other end of the swing arm 10.

[0030] Furthermore, the drive mechanism also includes a shaft tube 11 fixedly connected to the rotating shaft 8, the shaft tube 11 having a spiral hole 12, and a drive shaft 13 fixed at the bottom end of the moving table 5, the drive shaft 13 passing through the spiral hole 12.

[0031] Furthermore, it also includes a telescopic assembly for vertically sliding the transparent panel 7;

[0032] The telescopic assembly includes a swing arm three 14 rotatably connected to the base 1, a swing arm four 15 rotatably connected to the swing arm three 14, and a transparent plate 7 rotatably connected to the swing arm four 15.

[0033] Two swing arms 14 and two swing arms 15 are symmetrically arranged, and the two swing arms 14 are located on both sides of the swing arm 9.

[0034] In this embodiment, as shown in the figure, swing arms 3 14 and 4 15 form a V-shape, and swing arms 1 9 and 2 10 form a V-shape. Swing arms 3 14 and 4 15 do not move on the same vertical plane as swing arms 1 9 and 2 10. During the process of the moving mechanism moving the moving stage 5 backward, the pipe to be tested moves closer to the test head 4, and at the same time drives the drive shaft 13 to move. Since the drive shaft 13 passes through the spiral hole 12 on the shaft tube 11, the shaft tube 11 and the rotating shaft 8 are rotated under the drive of the drive shaft 13, thereby driving the swing arm 1 9, which is fixedly connected to the rotating shaft 8, to rotate. The swing arm 1 9 rotates around the rotating shaft 8, and the swing arm 1 9 pushes the swing arm 2 10 to rotate. Since swing arms 3 14 and 4 15 do not move on the same vertical plane as swing arms 1 9 and 2 10, the transparent plate 7 is raised and lowered.

[0035] Furthermore, the moving mechanism includes a lead screw 16 rotatably connected to the base 1, and the lead screw 16 is threadedly connected to the moving table 5;

[0036] It also includes two rails 17 fixed to the top of the base 1, and the rails 17 are slidably connected to the moving platform 5;

[0037] In this embodiment, a motor for driving the lead screw 16 to rotate is installed at the end of the lead screw 16. When the motor is energized, the lead screw rotates. Since the lead screw 16 is threadedly connected to the moving platform 5 and the track 17 is slidably connected to the moving platform 5, the motor energizing the lead screw rotates and moves the moving platform 5.

[0038] Furthermore, the top of the placement seat 6 has an arc-shaped notch 18, and a clamping mechanism is provided on the top of the placement seat 6;

[0039] In this embodiment, the pipe to be tested is placed in the notch 18 with an arc-shaped inner wall, which helps to limit the pipe. The clamping mechanism can clamp the pipe to prevent it from moving during the test and improve the accuracy of the test results.

[0040] Furthermore, the clamping mechanism includes a second lead screw 19 rotatably connected to the top of the moving platform 5. The second lead screw 19 has positive and negative threads, and both positive and negative threads are threaded to a slider 20. Clamping plates are fixed at both ends of the slider 20.

[0041] The clamping mechanism also includes a second track 21 fixedly connected to the top of the moving platform 5, and a second slider 20 slidably connected to the second track 21;

[0042] In this embodiment, a handwheel is installed at the end of the lead screw 19. Rotating the handwheel causes the lead screw 19 to rotate. Since both the positive and negative threads are threaded to the sliders 20, and the sliders 20 are slidably connected to the track 21, rotating the handwheel causes the two sliders 20 and the clamping plates on them to move closer or further away synchronously, clamping or releasing the pipe.

[0043] Furthermore, a straight hole 22 is also provided at one end of the spiral hole 12, and the straight hole 22 is parallel to the axial direction of the shaft tube 11;

[0044] In this embodiment, during the process of the moving mechanism driving the moving stage 5 to move towards the test head 4, the driving shaft 13 passes through the spiral hole 12 and the straight hole 22 in succession. When passing through the straight hole 22, since the straight hole 22 is parallel to the axis of the shaft tube 11, the shaft tube 11 will not rotate, so the transparent plate 7 will not rise or fall.

[0045] The present invention provides a reliable pressure pipeline strength testing device. When in operation, as shown in the figure, it is in the test state. The pipeline to be tested is placed on the placement seat 6, and the handwheel is rotated to rotate the screw 19 to clamp the pipeline.

[0046] Then, the motor of the moving mechanism is operated to move the moving stage 5, the placement seat 6, and the pipe to be tested to directly below the test head 4. During the movement of the moving stage 5 towards the test head 4, the drive shaft 13 passes through the spiral hole 12 and the straight hole 22 in succession.

[0047] Since the drive shaft 13 passes through the spiral hole 12 on the shaft tube 11, the shaft tube 11 and the rotating shaft 8 are rotated under the drive of the drive shaft 13, thereby driving the first swing arm 9, which is fixedly connected to the rotating shaft 8, to rotate. The first swing arm 9 rotates around the rotating shaft 8, and the first swing arm 9 pushes the second swing arm 10 to rotate. Since the third swing arm 14 and the fourth swing arm 15 do not move on the same vertical plane as the first swing arm 9 and the second swing arm 10, the transparent plate 7 moves upward. When it passes through the straight hole 22, since the straight hole 22 is parallel to the axis of the shaft tube 11, the shaft tube 11 will not rotate, so the transparent plate 7 will not rise or fall.

[0048] Then, the hydraulic cylinder 3 is operated to lower the test head 4 for testing. Even if the pipeline breaks, the transparent plate 7 can shield the broken parts. At the same time, the operator can observe the test status of the pipeline through the transparent plate 7. After the test is completed, all components are returned to their initial positions.

[0049] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0050] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A reliable pressure pipeline strength testing device, characterized in that, Includes a base (1), a portal plate (2) fixed on the top of the base (1), a hydraulic cylinder (3) fixed on the portal plate (2), and the output end of the hydraulic cylinder (3) is a test head (4) for testing compressive strength. The base (1) is equipped with a moving mechanism at the top. The output end of the moving mechanism is a moving platform (5). The top of the moving platform (5) is fixed with a placement seat (6) for placing the pressure pipeline to be tested. A transparent plate (7) slides vertically on the side of the base (1), and also includes a drive mechanism for driving the transparent plate (7) to move up and down; The driving mechanism includes a rotating shaft (8) rotatably connected to the base (1), the rotating shaft (8) is fixedly connected to one end of the first swing arm (9), the other end of the first swing arm (9) is rotatably connected to one end of the second swing arm (10), and the other end of the second swing arm (10) is rotatably connected to the transparent plate (7). The drive mechanism also includes a shaft tube (11) fixedly connected to the rotating shaft (8), the shaft tube (11) has a spiral hole (12), and the bottom end of the moving table (5) is fixed with a drive shaft (13), the drive shaft (13) passes through the spiral hole (12). It also includes a telescopic assembly for vertically sliding the transparent plate (7); The telescopic assembly includes a swing arm three (14) rotatably connected to the base (1), a swing arm four (15) rotatably connected to the swing arm three (14), and a transparent plate (7) rotatably connected to the swing arm four (15). Two swing arms (14) and two swing arms (15) are symmetrically arranged, and the two swing arms (14) are located on both sides of the swing arm (9); A straight hole (22) is also provided at one end of the spiral hole (12), and the straight hole (22) is parallel to the axis of the shaft tube (11).

2. The reliable pressure pipeline strength testing equipment as described in claim 1, characterized in that, The moving mechanism includes a lead screw (16) rotatably connected to the base (1), and the lead screw (16) is threadedly connected to the moving table (5); It also includes two rails (17) fixed to the top of the base (1), which are slidably connected to the moving platform (5).

3. The reliable pressure pipeline strength testing equipment as described in claim 2, characterized in that, The top of the placement seat (6) has an arc-shaped notch (18) on its inner wall, and a clamping mechanism is provided on the top of the placement seat (6).

4. The reliable pressure pipeline strength testing equipment as described in claim 3, characterized in that, The clamping mechanism includes a second lead screw (19) rotatably connected to the top of the moving platform (5). The second lead screw (19) has positive and negative threads, and both positive and negative threads are threaded to a slider (20). The two ends of the slider (20) are fixed with clamping plates. The clamping mechanism also includes a second track (21) fixedly connected to the top of the moving platform (5), and a second slider (20) slidably connected to the second track (21).

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