Pipeline sealing device for pipeline hydrostatic test

Abstract

The utility model provides a pipeline sealing device for a pipeline hydrostatic test, which comprises a pressure tester and a sealing cover, a pressure relief hole is arranged at the bottom of the pressure tester, a detachable pressure relief valve is arranged on the pressure relief hole, a first sealing flange is arranged at the top of the pressure tester, and a second sealing flange matched with the first sealing flange is arranged at the bottom of the sealing cover. The first sealing flange and the second sealing flange are in sealing connection through a first sealing bolt, a sealing gasket is arranged in the pressure tester, a stud is connected to the sealing gasket, the stud penetrates through a threaded hole matched with the stud in the sealing cover and extends out of the sealing cover, and a rotating valve is arranged at the end, located above the sealing cover, of the stud; the side face of the pressure tester is provided with a short connecting pipe communicated with the interior of the pressure tester, the outer wall of the short connecting pipe is provided with a first connecting flange, the end of the short connecting pipe is sleeved with a hose, the hose is sleeved with a second connecting flange, the first connecting flange and the second connecting flange are in sealed connection through a second sealing bolt, and the hose is sleeved with a hoop.

Description

Technical Field

[0001] The utility model relates to a pipeline sealing device used for pipeline water pressure test. Background Art

[0002] With the progress of society and the development of economy, pipelines are widely used in various fields. Among the many properties of pipelines, their air tightness is of vital importance. Therefore, the qualified detection of pipeline air tightness has also become the primary qualified standard for pipelines. When testing the air tightness of pipelines, it is necessary to connect fixed connectors at both ends of the pipeline to be tested, and good sealing is required, and then connect the sealing device. This operation is time-consuming and labor-intensive, with low operating efficiency, and the sealing performance is poor in high-pressure resistance. Water seepage may occur during the water pressure test, and the air in the pipeline cannot be discharged, resulting in the problem that the pipeline water pressure test cannot be effectively carried out.

[0003] Chinese patent announcement number CN208283008U discloses a pipeline sealing device for pipeline water pressure test in the field of pipeline water pressure test technology, including a pipeline, an upper clamping plate is provided on the top of the pipeline, a lower clamping plate is provided on the bottom of the pipeline, mounting grooves are provided on both sides of the upper clamping plate, thread grooves matching the mounting grooves are provided on both sides of the lower clamping plate, an adjusting screw is provided in the inner cavity of the mounting groove, a fixing thread is provided at the bottom of the adjusting screw, the fixing thread matches the thread groove, and a sealing tube is provided in the inner cavity of the pipeline. The utility model has a reasonable design and solves the problem that there is no specific sealing device at present, water seepage may occur during water pressure test, and the air in the pipeline cannot be discharged, resulting in the inability to effectively carry out pipeline water pressure test. The utility model has high practical value and relates to the field of pipeline water pressure test technology.

[0004] However, the utility model has the following problems when actually used:

[0005] 1. Water seepage may occur during the water pressure test, and the air in the pipeline cannot be discharged, resulting in the inability to conduct the pipeline water pressure test;

[0006] 2. The sealing device for pipeline water pressure test requires a good sealing environment. Connecting the sealing structure is time-consuming, labor-intensive, and has low work efficiency. Summary of the invention

[0007] The problem to be solved by the utility model is to provide a pipeline sealing device used for pipeline water pressure test, which overcomes the shortcomings of the prior art.

[0008] In order to solve the above technical problems, the technical solution adopted by the utility model is: a pipeline sealing device for pipeline water pressure test, including a pressure tester and a sealing cover, the bottom of the pressure tester is provided with a pressure relief hole, the pressure relief hole is provided with a detachable pressure relief valve, the top of the pressure tester is provided with a first sealing flange, the bottom of the sealing cover is provided with a second sealing flange matched with the first sealing flange, the first sealing flange and the second sealing flange are sealed and connected by a first sealing bolt, the pressure tester is provided with a sealing gasket, the sealing gasket is connected with a stud, the stud passes through a threaded hole on the sealing cover matched with the stud and extends above the sealing cover, and the end of the stud located above the sealing cover is provided with a rotating valve;

[0009] The side of the pressure tester is provided with a short connecting pipe connected to the inside of the pressure tester, the outer wall of the short connecting pipe is provided with a first connecting flange, the end of the short connecting pipe is sleeved with a hose, a second connecting flange is sleeved on the hose, the first connecting flange and the second connecting flange are sealed and connected by a second sealing bolt, and a hoop is sleeved on the hose.

[0010] Optionally, a pressure gauge is provided on the pressure tester.

[0011] Optionally, a sleeve wall is provided inside the pressure tester.

[0012] Optionally, sealing gaskets are arranged between the first sealing flange and the second sealing flange, and between the first connecting flange and the second connecting flange.

[0013] The advantages and positive effects of the utility model are as follows: 1. The sealing device for pipeline water pressure test is used for lifting and lowering the device through the matching arrangement of the sealing gasket and the stud. When the valve rotates, the sealing gasket is raised and lowered, and the internal pressure of the pressure tester is released or increased. The pressure relief valve is matched with the sealing gasket to avoid water seepage. When the sealing valve descends, the pressure relief valve opens, and the air can be discharged well, so as to more accurately test the pipeline water pressure and enhance the sealing performance during pipeline testing. 2. The sealing device for pipeline water pressure test is used for connecting the tested pipeline to the hose of the pressure tester through the matching arrangement of the regulating valve and the hose. When connecting the tested pipeline, the tested pipeline is connected to the hose of the pressure tester, and the regulating valve is used for tight adjustment, so that the tested pipeline and the pressure tester can be conveniently and quickly connected, and a good sealing environment is provided. At the same time, the air tightness of the pipeline connection during the test is increased, the difficulty of workers' operation is reduced, and the work efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of a specific implementation method of the utility model;

[0015] Figure 2 yes Figure 1 A schematic internal cross-sectional view of

[0016] In the figure: 1. pressure tester; 2. pressure gauge; 3. first sealing flange; 4. sealing cover; 5. rotary valve; 6. stud; 7. hose; 8. second sealing bolt; 9. second connecting flange; 10. short connecting pipe; 11. sleeve wall; 12. sealing gasket; 13. second sealing flange; 14. pressure relief valve; 15. hoop. DETAILED DESCRIPTION

[0017] The utility model is further described in detail below in conjunction with specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model. In the description of the utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the utility model. In the description of the utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be a connection between the two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood by specific circumstances.

[0018] As shown in the figure, the utility model provides a pipeline sealing device for pipeline water pressure test, including a pressure tester 1 and a sealing cover 4, the bottom of the pressure tester 1 is provided with a pressure relief hole, the pressure relief hole is provided with a detachable pressure relief valve 14, the top of the pressure tester 1 is provided with a first sealing flange 3, the bottom of the sealing cover 4 is provided with a second sealing flange 13 matched with the first sealing flange 3, the first sealing flange 3 and the second sealing flange 13 are sealed and connected by a first sealing bolt, the pressure tester 1 is provided with a sealing gasket 12, the sealing gasket 12 is connected with a stud 6, the stud 6 passes through a threaded hole on the sealing cover 4 that matches with the stud 6 and extends above the sealing cover 4, and the end of the stud 6 located above the sealing cover 4 is provided with a rotating valve 5; the stud 2 and the rotating valve 5 are provided in cooperation, so that the sealing gasket 12 is raised and lowered to achieve the pressure change inside the pressure tester 1

[0019] The side of the pressure tester 1 is provided with a short connecting pipe 10 connected to the inside of the pressure tester 1, and the outer wall of the short connecting pipe 10 is provided with a first connecting flange. The end of the short connecting pipe 10 is sleeved with a hose 7, and a second connecting flange 9 is sleeved on the hose 7. The first connecting flange and the second connecting flange 9 are sealed and connected by a second sealing bolt 8, and a hoop 15 is sleeved on the hose 7.

[0020] A pressure gauge 2 is provided on the pressure tester 1.

[0021] A sleeve wall 11 is arranged inside the pressure tester 1 , and the sleeve wall 11 can alleviate the impact of water pressure on the inner wall of the pressure tester 1 , thereby extending the service life of the pressure tester 1 .

[0022] Sealing gaskets are arranged between the first sealing flange 3 and the second sealing flange 13 , and between the first connecting flange and the second connecting flange 9 .

[0023] The usage of the above structure is as follows: the staff first plugs the hose 7 into the short connecting pipe 10 on the pressure tester 1, fixes the hose 7 with the first connecting flange and the second connecting flange 9, and sleeves the hoop 15 on the hose 7; secondly, the pressure relief valve 14 is opened to discharge the air in the pressure tester 1, and the staff adjusts the sealing gasket 12 to the lowest end by rotating the valve 5, and then connects the measured pipeline to the hose 7 on one side of the pressure tester 1, adjusts the hoop 15 to the size corresponding to the measured pipeline, and locks the hoop to increase the air tightness. Finally, when the pressure in the pressure tester 1 needs to be adjusted, the staff needs to rotate the valve 5 to make the sealing gasket 12 rise and fall to adjust the pressure.

[0024] The above is a detailed description of the embodiments of the utility model, but the contents are only preferred embodiments of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A pipeline sealing device for pipeline water pressure test, characterized in that: The pressure tester comprises a pressure tester and a sealing cover, wherein the bottom of the pressure tester is provided with a pressure relief hole, the pressure relief hole is provided with a detachable pressure relief valve, the top of the pressure tester is provided with a first sealing flange, the bottom of the sealing cover is provided with a second sealing flange matched with the first sealing flange, the first sealing flange and the second sealing flange are sealed and connected by a first sealing bolt, the pressure tester is provided with a sealing gasket, the sealing gasket is connected with a stud, the stud passes through a threaded hole on the sealing cover matched with the stud and extends above the sealing cover, and the end of the stud located above the sealing cover is provided with a rotating valve; The side of the pressure tester is provided with a short connecting pipe connected to the inside of the pressure tester, the outer wall of the short connecting pipe is provided with a first connecting flange, the end of the short connecting pipe is sleeved with a hose, a second connecting flange is sleeved on the hose, the first connecting flange and the second connecting flange are sealed and connected by a second sealing bolt, and a hoop is sleeved on the hose.

2. The pipeline sealing device for pipeline water pressure test according to claim 1, characterized in that: A pressure gauge is arranged on the pressure tester.

3. The pipeline sealing device for pipeline water pressure test according to claim 2, characterized in that: A sleeve wall is arranged inside the pressure tester.

4. The pipeline sealing device for pipeline water pressure test according to claim 1, characterized in that: Sealing gaskets are arranged between the first sealing flange and the second sealing flange, and between the first connecting flange and the second connecting flange.

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