Buried gas conveying pipeline leakage cross positioning method based on beam forming

A technology for cross positioning and gas transmission pipelines, which is applied in the pipeline system, gas/liquid distribution and storage, mechanical equipment, etc. It can solve the problems of accurate leakage positioning, inability to meet buried pipelines, and inability to achieve accurate three-dimensional positioning. Precise positioning, solving the effect of insufficient precision
CN109595474AActive Publication Date: 2019-04-09ANHUI UNIV OF SCI & TECH +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ANHUI UNIV OF SCI & TECH
Publication Date
2019-04-09

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Abstract

The invention discloses a buried gas conveying pipeline leakage cross positioning method based on beam forming. The method is based on a beam forming method, and the space position of a sound source generated at the leakage position of a buried gas conveying pipeline is positioned by combining a cross positioning principle, and then positioning of a leakage point is completed. Compared with the prior art, the cross positioning method has the advantages that two sensor arrays are arranged and are extended to a soil medium through a waveguide rod, a sound source positioning method based on beamforming is improved by means of the cross positioning principle so that three-dimensional positioning of the far-field sound source can be realized through the cross positioning principle, the cross positioning principle is applied to a buried gas conveying pipeline leakage sound wave positioning scene, then accurate positioning of pipeline leakage is realized, and the cross positioning method isa supplement to an existing pipeline leakage detection method based on the sound wave method, and solves the problems that in the prior art, in case of an existing method, the positioning instantaneity is high but the precision is insufficient.
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Description

technical field

[0001] The invention relates to the technical field of sound source location, in particular to a beamforming-based method for cross-locating leakage of buried gas pipelines. Background technique

[0002] In recent years, my country's demand for urban gas has increased year by year, and the total length of gas pipelines has continued to increase, and the hidden dangers of gas leakage have also inevitably increased. Due to the aging and corrosion of pipelines, natural disasters and third-party damage, the accident rate of gas pipelines in my country has reached an average of three times per kilometer per year. Therefore, there is an urgent need to develop a high-precision positioning method for gas pipeline leakage points, real-time monitoring and precise positioning of gas leakage, so that once the gas leakage starts, it will be found and dealt with immediately.

[0003] The researchers studied the generation mechanism and propagation characteristics of gas l...

Claims

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