Intelligent monitoring method for leakage of natural gas pipeline

A natural gas pipeline and intelligent monitoring technology, which is applied in pipeline systems, gas/liquid distribution and storage, mechanical equipment, etc., can solve problems such as low accuracy, high cost, and poor stability

Active Publication Date: 2021-09-10
PIPECHINA SOUTH CHINA CO
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of the above defects or improvement needs of the prior art, the present invention provides an intelligent monitoring method and system for natural ga

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  • Intelligent monitoring method for leakage of natural gas pipeline
  • Intelligent monitoring method for leakage of natural gas pipeline
  • Intelligent monitoring method for leakage of natural gas pipeline

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Embodiment Construction

[0062] Embodiments of the present invention will be described in detail below with reference to the drawings. When the description refers to the drawings, the same reference numerals in different drawings indicate the same or similar elements unless otherwise indicated. It should be noted that the implementations described in the following exemplary embodiments do not represent all implementations of the present invention. They are merely examples of apparatus and methods consistent with certain aspects of the present disclosure as recited in the claims, and the scope of the present invention is not limited thereto. On the premise of no contradiction, the features in the various embodiments of the present invention can be combined with each other.

[0063] see Figure 1-3 , an embodiment of the present invention provides an intelligent monitoring method for natural gas pipeline leakage, comprising the following steps:

[0064] S 1 : Acquisition of audio signals during the o...

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Abstract

The invention provides an intelligent monitoring method for leakage of a natural gas pipeline. The method comprises the following steps: collecting an audio signal during operation of the natural gas pipeline by using a sound array; performing imaging positioning on the audio signal by using a beam forming algorithm based on symbol coherence and feature space decomposition; obtaining an audio frequency spectrum in the direction of direction of arrival through a linear constraint minimum variance algorithm; and carrying out standardization processing by taking the frequency spectrum formed by the beam as a characteristic, and inputting the characteristic into a pre-trained natural gas leakage diagnosis model to obtain a pipeline condition. According to the intelligent monitoring method for leakage of the natural gas pipeline, a beam forming algorithm based on symbol coherence and feature space decomposition is used, side lobes are better restrained, the acoustic imaging resolution is better improved, high-contrast and high-resolution acoustic imaging and accurate positioning can be carried out on a leakage source on an on-site image, the accuracy of natural gas leakage diagnosis is effectively improved, and meanwhile, the workload and troubleshooting difficulty of operators on duty are greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of natural gas leakage monitoring, and more particularly relates to an intelligent monitoring method and system for natural gas pipeline leakage. Background technique [0002] The global natural gas transportation and distribution network is complex and expanding. Research has shown that pipelines are the safest means of transporting gas, but that doesn't mean using them is risk-free. Therefore, ensuring the reliability of natural gas pipeline infrastructure has become a key requirement, and the generation of leakage is the main factor threatening the reliability of the pipeline network. Pipeline leaks are a significant concern, regardless of size, because of the potentially dramatic impact. These impacts go beyond the costs involved in downtime and repair costs, and can include substantial loss of resources, and possibly personal injury and environmental disaster. Due to factors such as external interfer...

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Application Information

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IPC IPC(8): F17D5/06
CPCF17D5/06
Inventor 李洪烈曹永乐刘军峰李想李成彭太翀王磊袁晓骏李明耀管文涌朱明刘双凌王东剑
Owner PIPECHINA SOUTH CHINA CO
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