A self-sealing pressure test joint

A self-sealing and pressure testing technology, applied in the direction of pipe/pipe joint/fitting, sleeve/socket connection, using liquid/vacuum degree for liquid tightness measurement, etc., it can solve the problem of pressure test joint or pipe damage, pipe bending and sealing parts damage etc.

Active Publication Date: 2022-02-01
NANJING INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The conventional pressure test device needs to increase the axial force to compress the pipe head, so that the pipe bears the bending stress, causing the pipe to bend and the seal to be damaged too quickly
Once the pressure is too high, it will also cause irreversible damage to the pressure test joints or pipelines

Method used

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  • A self-sealing pressure test joint
  • A self-sealing pressure test joint
  • A self-sealing pressure test joint

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Experimental program
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Embodiment Construction

[0027] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0028] Such as figure 1 As shown, a self-sealing pressure test joint includes a sleeve 3, the bottom of the sleeve 3 is provided with a through hole 8, the sealing gasket 2 is arranged on the inner side of the bottom of the sleeve 3, and the inner side of the sleeve 3 A sleeve internal thread 5 is provided, and a terminal external thread 11 is provided on the outside of the terminal 1, and the sleeve 3 and the terminal 1 are connected through the sleeve internal thread 5 and the terminal external thread 11, so One end of the end head 1 is connected to the sealing gasket 2, the diameter of the through pipe hole 8 is larger than the opening of the sealing gasket 2, and it also includes a clamping centering device 4, and the outer side of the bottom of the sleeve 3 passes through the external thread 9 of the sleeve. Connect with clamping centering device 4.

[0029] T...

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Abstract

The invention provides a self-sealing pressure test joint, which includes a sleeve, a through hole is arranged at the bottom of the sleeve, a sealing gasket is arranged on the inner side of the bottom of the sleeve, and the inner side of the sleeve is provided with a thread, the outside of the end is provided with an external thread of the end, the sleeve and the end are connected through the internal thread of the sleeve and the external thread of the end, one end of the end is connected with a sealing gasket, the The diameter of the through pipe hole is larger than the opening of the sealing gasket, and it also includes a clamping centering device, and the outer side of the bottom of the sleeve is connected with the clamping centering device through the external thread of the sleeve. The invention effectively avoids the drawbacks of conventional pressure testing devices that need to increase the axial force to compress the pipe end, so as to avoid the bending of the pipe and the rapid damage of the seal, and ensure the safety of the whole device without being damaged. An eccentric groove is set in the end, which can better test the tightness of the assembly.

Description

technical field [0001] The invention belongs to the technical field of pressure test joints, in particular to a self-sealing pressure test joint. Background technique [0002] After the pipeline is installed, the pressure test of the pipeline system should be carried out according to the design requirements. Except for vacuum pipeline systems and pipeline systems with fire protection requirements, most pipelines are only tested for strength and tightness. The strength test and tightness test of the pipeline system generally adopt the hydraulic test. If the hydraulic test cannot be used due to the design structure or other reasons, the air pressure test can be used. During the test, the strength and tightness of the joints directly affect the strength and pressure distribution of the piping system. The conventional pressure test device needs to increase the axial force to compress the pipe head, so that the pipe bears the bending stress, resulting in the bending of the pipe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/12G01M3/02F16L21/00
CPCG01N3/12G01M3/02F16L21/00
Inventor 朱大胜张彬玢王科伟赵钒智季尧杰
Owner NANJING INST OF TECH
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