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Method and system for locating gas pipeline leakage points

A locating method and leakage point technology, which is applied in the pipeline system, gas/liquid distribution and storage, mechanical equipment, etc., can solve the problems of poor detection reliability, slow detection speed, and high cost

Active Publication Date: 2021-03-19
BEIJING INST OF RADIO METROLOGY & MEASUREMENT
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The invention provides a gas pipeline leakage point location method and system, which solves the problems of poor detection reliability, slow detection speed and high cost of existing methods and systems

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  • Method and system for locating gas pipeline leakage points
  • Method and system for locating gas pipeline leakage points
  • Method and system for locating gas pipeline leakage points

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Embodiment Construction

[0024] In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0025] The innovations of the present invention are as follows: first, the present invention judges whether there is leakage based on the acoustic principle, does not change the operating conditions inside and outside the pipeline, does not affect the normal operation of the pipeline and the use of users, and has a high judgment success rate; second, the present inventi...

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Abstract

The invention discloses a gas pipeline leakage point positioning method and system, and solves the problems of poor detection reliability, low detection speed and high cost of an existing method and system. The method comprises the following steps of acquiring interference signals, and determining an interference frequency band; acquiring first and second noise signals, setting a plurality of filters to cover the frequency bands of the first and second noise signals, filtering out the interference frequency band, calculating a cross-correlation coefficient of two columns of noise signals for each filter, and finding the maximum cross-correlation coefficient value and a corresponding signal-to-noise ratio of each filter; multiplying the maximum cross-correlation coefficient value and the corresponding signal-to-noise ratio of each filter to find the maximum value, and determining the corresponding filter as a final filter; and performing cross-correlation calculation on the two columnsof noise signals by using the final filter to obtain a final cross-correlation coefficient, calculating a final signal-to-noise ratio, and judging the leakage condition and the leakage point positionbetween first and second noise signal acquisition points. The system uses the method. The method and the system are easy to realize and popularize in engineering.

Description

technical field [0001] The invention relates to the technical field of gas pipeline detection, in particular to a method and system for locating a leak point of a gas pipeline. Background technique [0002] Accidents such as explosions caused by gas pipeline leakage occur frequently, which seriously endanger public safety. The safety of gas pipeline network is particularly important. Gas pipeline leak detection and leak point location are important tasks in the daily operation and maintenance of the pipeline. There are various leak detection methods currently used, each with their own advantages and disadvantages. Although the ground gas detection method has intuitive and accurate results, the detection success rate is low and the detection speed is slow; the tracer gas detection effect is slightly better, but the gas injection is difficult, and the gas heat The value has a great influence, and the ground needs to be opened during detection; the anti-corrosion layer damage ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F17D5/06
CPCF17D5/06
Inventor 李雨龙杨帆郭慧杰王超楠
Owner BEIJING INST OF RADIO METROLOGY & MEASUREMENT
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