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Leakproofness test methodfor single flange

A technology of tightness test and test method, which is used in fluid tightness testing, liquid tightness measurement using liquid/vacuum degree, and testing of machine/structural components, etc. It can solve the risk of increasing leakage of old pipelines and increase projects Workload and other issues, to achieve the effect of facilitating equipment installation, reducing project risks, and reducing workload

Inactive Publication Date: 2020-11-10
OFFSHORE OIL ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] During the implementation of the old platform pipeline reconstruction project, the following situation will be encountered: at the position where the flanges of the new and old pipelines are connected, there is no isolation valve on the side of the old pipeline, which makes it necessary to conduct a tightness test on the flanges at the connection position , it has to be tested with the old pipeline system, resulting in an increase in project workload and at the same time due to the tightness test pressure is 1.1 times the operating pressure, thus increasing the risk of leakage of the old pipeline

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  • Leakproofness test methodfor single flange
  • Leakproofness test methodfor single flange
  • Leakproofness test methodfor single flange

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Embodiment Construction

[0024] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0025] Such as Figure 1 to Figure 3 As shown, a single-group flange tightness test method includes the following steps:

[0026] S100, making a self-test pressure gasket 1 according to the specifications of the flange to be tested;

[0027] S200. Install a self-test pressure gasket 1 at the access point of the flange 2 to be tested;

[0028] S300, connecting the helium-nitrogen test equipment 3 and debugging;

[0029] S400. Connect the gas injection port of the helium-nitrogen test equipment 3 to the gas injection pipe 12 of ...

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Abstract

The invention discloses a leakproofness test method for a single flange. The leakproofness test method comprises the following steps: manufacturing a self-pressure-test gasket according to the specification of a to-be-tested flange; installing a self-pressure-testing gasket at the connection point of the to-be-tested flange; connecting helium-nitrogen test equipment and performing debugging; connecting a gas injection port of helium-nitrogen test equipment with a gas injection pipe of the self-pressure-test gasket, filling a detection medium of the helium-nitrogen test equipment into the self-pressure-test gasket, and carrying out a helium leakage detection process according to a leakage detection program; and after the leakage detection test is finished, dismounting the gas injection pipeconnected with the self-pressure-testing gasket. According to the leakproofness test method for a single flange, the leakproofness performance of the single flange can be accurately judged, the workload is effectively reduced, and the project risk is reduced.

Description

technical field [0001] The invention relates to the technical field of flange testing, in particular to a single-group flange tightness test method. Background technique [0002] During the implementation of the old platform pipeline reconstruction project, the following situation will be encountered: at the position where the flanges of the new and old pipelines are connected, there is no isolation valve on the side of the old pipeline, which makes it necessary to conduct a tightness test on the flanges at the connection position , it has to be tested with the old pipeline system, resulting in an increase in project workload and at the same time because the tightness test pressure is 1.1 times the operating pressure, thereby increasing the risk of leakage of the old pipeline. Contents of the invention [0003] The present invention aims to solve one of the above-mentioned technical problems in the prior art at least to a certain extent. In view of this, the present inven...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M3/22
CPCG01M3/223
Inventor 朱澧孙道青王传磊李凯程隆张磊
Owner OFFSHORE OIL ENG
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