Pipeline pressure-bearing detection equipment

Abstract

The invention relates to pipeline pressure-bearing detection equipment which comprises a frame, the frame is composed of two bottom beams, two side beams, four vertical columns, two shoulder beams and a top beam, the two bottom beams are arranged side by side in the transverse direction, the top walls of the ends of the two bottom beams are fixedly connected through the side beams, the top wall of each bottom beam is fixedly connected with the two vertical columns, the four vertical columns are distributed in a square array, and the shoulder beams are fixedly connected with the two vertical columns. A shoulder beam is connected between the tops of the two vertical columns on the same side, a top beam is connected between the top sides of the two shoulder beams, a base plate is fixedly connected to the top sides of the two bottom beams, a lower silica gel sheet is arranged on the upper surface of the base plate, a water injection cavity is formed in the base plate, a water outlet is formed in the top wall of the base plate, a water injection pipe is connected to the side wall of the base plate, and the water injection pipe is connected with a pipe switch. The top beam is in threaded connection with a distance adjusting screw, and a connecting flange is arranged at the lower end of the distance adjusting screw. The welding quality of the flange plate can be efficiently and accurately detected.

Description

Technical Field

[0001] The invention relates to the technical field of pressure detection, and in particular to a pipeline pressure detection device. Background Art

[0002] A common pipeline structure is to weld flanges at both ends of a pipe, which is used to connect other pipes. In situations where pipelines transport high-pressure liquids, the welding quality of the flanges is particularly important. If the welding quality of the flanges is not up to standard, there will be gaps at the welds. When transporting high-pressure liquids, the liquid will seep through the gaps, causing liquid waste or reducing the water pressure of the pipeline due to leakage.

[0003] In the prior art, it is necessary to manually observe the weld of the flange with the naked eye to detect weld defects. This detection method is inefficient and has low accuracy. Summary of the invention

[0004] The purpose of the present invention is to provide a pipeline pressure detection device, which can efficiently and accurately detect the welding quality of the flange.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A pipeline pressure detection device includes a frame, which is composed of two bottom beams, two side beams, four vertical columns, two shoulder beams and a top beam. The two bottom beams are arranged in parallel in the transverse direction, and the top walls of the ends of the two bottom beams are fixedly connected by the side beams. The top wall of each bottom beam is fixedly connected to two vertical columns. The four vertical columns are distributed in a square array. The tops of the two vertical columns on the same side are connected with a shoulder beam, the top sides of the two shoulder beams are connected with a top plate, the top sides of the two bottom beams are fixedly connected to a bottom plate, the upper surface of the bottom plate is provided with a lower silicone sheet, and the bottom plate is provided with a bottom silicone sheet. A water injection cavity is provided, a water outlet is provided on the top wall of the chassis, a water injection pipe is connected to the side wall of the chassis, the water injection pipe is connected to a pipe switch, a pitch adjusting screw is threadedly connected to the top beam, a connecting flange is provided at the lower end of the pitch adjusting screw, the lower end of the pitch adjusting screw is rotatably connected to the sleeve of the connecting flange, a hydraulic cylinder is fixedly connected to the bottom side of the connecting flange, a pressure plate is fixedly connected to the lower end of the piston of the hydraulic cylinder, an upper silicone sheet is provided on the lower surface of the pressure plate, an exhaust cavity is provided in the pressure plate, an exhaust hole is provided on the bottom wall of the pressure plate, an exhaust pipe is provided on the side wall of the pressure plate, and a hydraulic gauge is provided on the exhaust pipe.

[0007] Specifically, a lower circular boss is provided on the bottom wall of the chassis, the lower circular boss is coaxially arranged with the chassis, the inner cavity of the lower circular boss is communicated with the inner cavity of the chassis, and the water injection pipe is connected with the side wall of the lower circular boss.

[0008] Specifically, a gap is left between the side wall of the lower circular boss and the inner walls of the two bottom beams.

[0009] Specifically, the pressure plate is coaxially arranged with the chassis, the diameter of the pressure plate is smaller than the chassis, the water outlet is arranged at the center position of the top wall of the chassis, and the exhaust hole is arranged at the center position of the pressure plate.

[0010] Specifically, an upper circular boss is provided on the top wall of the pressure plate, an inner cavity of the upper circular boss is communicated with an inner cavity of , and the upper circular boss is coaxially arranged with the pressure plate.

[0011] Specifically, the exhaust pipe is arranged on the upper circular boss.

[0012] Specifically, four rocking arms are arranged at the top of the pitch-adjusting screw rod, and the four rocking arms are evenly distributed along the circumferential direction.

[0013] Specifically, the bottom plate and the pressure plate are used to clamp the pipeline to be tested together. Flange plates are welded at both ends of the pipeline to be tested, and the two flange plates are respectively against the bottom plate and the pressure plate.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The two ends of the pipe to be tested (not shown) are welded with flanges. The pipe to be tested is placed on the chassis, so that the flange at the lower end of the pipe to be tested is against the lower silicone sheet on the top wall of the chassis, and the flange at the upper end of the pipe to be tested faces the bottom wall of the pressure plate. Then, the pitch adjusting screw is rotated to move the pitch adjusting screw downward as a whole.

[0016] The lower end of the pitch-adjusting screw is rotatably connected to the sleeve of the connecting flange, so that the hydraulic cylinder can be kept from rotating during the downward movement of the pitch-adjusting screw as a whole.

[0017] When the bottom wall of the pressure plate is against the flange at the upper end of the pipe to be tested, the hydraulic cylinder is turned on to extend the piston rod of the hydraulic cylinder, so that the pressure plate presses the flange at the upper end of the pipe to be tested, so that the edge of the flange at the upper end of the pipe to be tested forms a liquid seal with the upper silicone sheet, and the edge of the flange at the lower end of the pipe to be tested forms a liquid seal with the lower silicone sheet.

[0018] At this time, turn on the pipe switch, inject water into the inner cavity of the chassis through the water injection pipe, and the water flows into the inner cavity of the pipeline to be tested through the water outlet. The air originally in the inner cavity of the pipeline to be tested is discharged through the exhaust hole and the exhaust pipe. Until all the air in the inner cavity of the pipeline to be tested is discharged, water will flow out of the exhaust pipe. At this time, close the end of the exhaust pipe and increase the pressure of water injection into the water injection pipe. The water pressure in the inner cavity of the pipeline to be tested can be known through the reading of the hydraulic gauge.

[0019] The flanges at both ends of the pipeline to be tested (not shown in the figure) are newly welded. If the welding quality is not good enough and there are gaps at the welds, the high-pressure water in the inner cavity of the pipeline to be tested will flow out of the gaps, thereby efficiently and accurately judging the welding quality of the flanges at both ends of the pipeline to be tested (not shown in the figure). BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 A three-dimensional view of the present invention;

[0022] Figure 2 for Figure 1 A partial enlarged view of point A in the middle;

[0023] Figure 3 It is a three-dimensional view of the present invention.

[0024] In the figure:

[0025] 11. Bottom beam; 12. Side beam; 13. Vertical column; 14. Shoulder beam; 15. Top beam;

[0026] 2. chassis; 21. water outlet; 22. water injection pipe; 23. pipe switch; 24. lower circular boss; 25. lower silicone sheet;

[0027] 3. Pitch adjustment screw; 31. Rocker;

[0028] 41. Connecting flange; 42. Hydraulic cylinder;

[0029] 5. Pressure plate; 51. Exhaust hole; 52. Exhaust pipe; 53. Hydraulic pressure gauge; 54. Upper circular boss; 55. Upper silicone sheet. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] See Figures 1 to 3 A pipeline pressure detection device includes a frame, which is composed of two bottom beams 11, two side beams 12, four vertical columns 13, two shoulder beams 14 and a top beam 15. The two bottom beams 11 are arranged in parallel in the transverse direction, and the top walls of the ends of the two bottom beams 11 are fixedly connected by the side beams 12. Two vertical columns 13 are fixedly connected to the top wall of each bottom beam 11, and the four vertical columns 13 are distributed in a square array. A shoulder beam 14 is connected between the tops of the two vertical columns 13 on the same side, and a top beam 15 is connected between the top sides of the two shoulder beams 14.

[0032] The top sides of the two bottom beams 11 are fixedly connected to the chassis 2, and a lower silicone sheet 25 is provided on the upper surface of the chassis 2. A water injection cavity (not shown) is provided in the chassis 2, and a water outlet 21 is provided on the top wall of the chassis 2. A water injection pipe 22 is connected to the side wall of the chassis 2, and a pipe switch 23 is connected to the water injection pipe 22.

[0033] The top beam 15 is threadedly connected with the pitch-adjusting screw 3, and the lower end of the pitch-adjusting screw 3 is provided with a connecting flange 41, and the lower end of the pitch-adjusting screw 3 is rotatably connected to the sleeve of the connecting flange 41. A hydraulic cylinder 42 is fixedly connected to the bottom side of the connecting flange 41, and a pressure plate 5 is fixedly connected to the lower end of the piston of the hydraulic cylinder 42, and an upper silicone sheet 55 is provided on the lower surface of the pressure plate 5. An exhaust cavity (not shown) is provided in the pressure plate 5, and an exhaust hole 51 is provided on the bottom wall of the pressure plate 5. An exhaust pipe 52 is provided on the side wall of the pressure plate 5, and a hydraulic gauge 53 is provided on the exhaust pipe 52.

[0034] Specifically, a lower circular boss 24 is provided on the bottom wall of the chassis 2 , the lower circular boss 24 is coaxially arranged with the chassis 2 , the inner cavity of the lower circular boss 24 is communicated with the inner cavity of the chassis 2 , and the water injection pipe 22 is connected to the side wall of the lower circular boss 24 .

[0035] Specifically, a gap is left between the side wall of the lower circular boss 24 and the inner walls of the two bottom beams 11 .

[0036] Specifically, the pressure plate 5 is coaxially arranged with the chassis 2 , the diameter of the pressure plate 5 is smaller than that of the chassis 2 , the water outlet 21 is arranged at the center position of the top wall of the chassis 2 , and the exhaust hole 51 is arranged at the center position of the pressure plate 5 .

[0037] Specifically, an upper circular boss 54 is provided on the top wall of the pressure plate 5 , the inner cavity of the upper circular boss 54 is communicated with the inner cavity of , and the upper circular boss 54 is coaxially arranged with the pressure plate 5 .

[0038] Specifically, the exhaust pipe 52 is disposed on the upper circular boss 54 .

[0039] Specifically, four rocking arms 31 are provided at the top of the pitch-adjusting screw rod 3 , and the four rocking arms 31 are evenly distributed along the circumferential direction.

[0040] Specifically, the bottom plate 2 and the pressure plate 5 are used to clamp the pipeline to be tested (not shown in the figure), and flanges are welded at both ends of the pipeline to be tested, and the two flanges are respectively against the bottom plate 2 and the pressure plate 5.

[0041] The working principle of the present invention is as follows:

[0042] The two ends of the pipeline to be tested (not shown) are welded with flanges, and the pipeline to be tested is placed on the chassis 2, so that the flange at the lower end of the pipeline to be tested is close to the lower silicone sheet 25 on the top wall of the chassis 2, and the flange at the upper end of the pipeline to be tested faces the bottom wall of the pressure plate 5. Then, the pitch adjusting screw 3 is rotated to move the pitch adjusting screw 3 downward as a whole.

[0043] The lower end of the pitch-adjusting screw rod 3 is rotatably connected to the sleeve of the connecting flange 41 , so that the hydraulic cylinder 42 can be kept from rotating during the overall downward movement of the pitch-adjusting screw rod 3 .

[0044] When the bottom wall of the pressure plate 5 is against the flange at the upper end of the pipe to be tested, the hydraulic cylinder 42 is turned on to extend the piston rod of the hydraulic cylinder 42, so that the pressure plate 5 presses the flange at the upper end of the pipe to be tested, so that the edge of the flange at the upper end of the pipe to be tested forms a liquid seal with the upper silicone sheet 55, and the edge of the flange at the lower end of the pipe to be tested forms a liquid seal with the lower silicone sheet 25.

[0045] At this time, turn on the pipe switch 23, inject water into the inner cavity of the chassis 2 through the water injection pipe 22, and the water flows into the inner cavity of the pipeline to be tested through the water outlet 21. The air originally in the inner cavity of the pipeline to be tested is discharged through the exhaust hole 51 and the exhaust pipe 52. Until all the air in the inner cavity of the pipeline to be tested is discharged, water will flow out of the exhaust pipe 52. At this time, close the end of the exhaust pipe 52 ( Figure 2 B in the middle), and increase the pressure of water injection into the water injection pipe 22. Through the reading of the hydraulic gauge 53, the water pressure in the inner cavity of the pipeline to be tested can be known.

[0046] The flanges at both ends of the pipeline to be tested (not shown in the figure) are newly welded. If the welding quality is not good enough and there are gaps at the welds, the high-pressure water in the inner cavity of the pipeline to be tested will flow out of the gaps, thereby efficiently and accurately judging the welding quality of the flanges at both ends of the pipeline to be tested (not shown in the figure).

[0047] The above are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A pipeline pressure detection device, characterized in that: The frame includes two bottom beams, two side beams, four vertical columns, two shoulder beams and a top beam. The two bottom beams are arranged in parallel in the transverse direction. The top walls of the ends of the two bottom beams are fixedly connected through the side beams. The top wall of each bottom beam is fixedly connected with two vertical columns. The four vertical columns are distributed in a square array. The tops of the two vertical columns on the same side are connected with a shoulder beam. The top sides of the two shoulder beams are connected with a top plate. The top sides of the two bottom beams are fixedly connected with a bottom plate. The upper surface of the bottom plate is provided with a lower silicone sheet. The bottom plate is provided with a water injection cavity. A water outlet is provided on the top wall of the chassis, a water injection pipe is connected to the side wall of the chassis, the water injection pipe is connected to a pipe switch, an adjusting screw is threadedly connected to the top beam, a connecting flange is provided at the lower end of the adjusting screw, the lower end of the adjusting screw is rotatably connected to the sleeve of the connecting flange, a hydraulic cylinder is fixedly connected to the bottom side of the connecting flange, a pressure plate is fixedly connected to the lower end of the piston of the hydraulic cylinder, an upper silicone sheet is provided on the lower surface of the pressure plate, an exhaust cavity is provided in the pressure plate, an exhaust hole is provided on the bottom wall of the pressure plate, an exhaust pipe is provided on the side wall of the pressure plate, and a hydraulic gauge is provided on the exhaust pipe.

2. The pipeline pressure detection equipment according to claim 1 is characterized in that: The bottom wall of the chassis is provided with a lower circular boss, which is coaxially arranged with the chassis, the inner cavity of the lower circular boss is communicated with the inner cavity of the chassis, and the water injection pipe is connected with the side wall of the lower circular boss.

3. The pipeline pressure detection equipment according to claim 2 is characterized in that: A gap is left between the side wall of the lower circular boss and the inner walls of the two bottom beams.

4. The pipeline pressure detection equipment according to claim 1 is characterized in that: The pressure plate is coaxially arranged with the bottom plate, the diameter of the pressure plate is smaller than that of the bottom plate, the water outlet is arranged at the center position of the top wall of the bottom plate, and the exhaust hole is arranged at the center position of the pressure plate.

5. The pipeline pressure detection equipment according to claim 1 is characterized in that: An upper circular boss is provided on the top wall of the pressure plate, the inner cavity of the upper circular boss is communicated with the inner cavity of , and the upper circular boss is coaxially arranged with the pressure plate.

6. The pipeline pressure detection device according to claim 5 is characterized in that: The exhaust pipe is arranged on the upper circular boss.

7. The pipeline pressure detection equipment according to claim 1 is characterized in that: The top of the pitch-adjusting screw rod is provided with four rocking arms, which are evenly distributed along the circumference.

8. The pipeline pressure detection equipment according to claim 1 is characterized in that: The bottom plate and the pressure plate are used to clamp the pipeline to be tested together. Flange plates are welded at both ends of the pipeline to be tested, and the two flange plates are respectively against the bottom plate and the pressure plate.

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