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Utility tunnel gas leakage source identification method based on impulse response method and sensor array

A sensor array and impulse response technology, applied in the direction of instruments, scientific instruments, pipeline systems, etc., can solve the problems of hidden dangers of integrated pipe gallery safety, threats to the life safety of residents in the safe operation of cities, etc., and achieve the effect of rapid identification and early warning

Inactive Publication Date: 2020-06-09
NANJING UNIV OF TECH
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Problems solved by technology

However, the comprehensive pipe gallery belongs to the small underground space. At the same time, the entry of gas pipelines into the corridor also poses a major hidden danger to the safety of the comprehensive pipe gallery. The danger caused by gas leakage and explosion is also huge, which is also harmful to the safe operation of the city and the life safety of residents. poses a threat

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  • Utility tunnel gas leakage source identification method based on impulse response method and sensor array
  • Utility tunnel gas leakage source identification method based on impulse response method and sensor array
  • Utility tunnel gas leakage source identification method based on impulse response method and sensor array

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Embodiment Construction

[0025] Below in conjunction with accompanying drawing and example, the specific embodiment of the present invention is further described in detail, and following example is used for the present invention, but is not used to limit the scope of the present invention. After reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

[0026] like figure 1 As shown, a 9-meter-long, 1.7-meter-wide, and 2.1-meter-high underground comprehensive pipe gallery model was established, and a 9-meter-long gas pipeline crossing model was established. The real leakage source (potential source 1) is located under the gas pipeline, 1.63 meters away from the air inlet, and two potential sources 2 and 3 are also set. The concentration sensor is arranged on the "S" section 9 meters away from the air i...

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Abstract

The invention discloses a method for quickly identifying the position of a leakage source and the magnitude of the release amount of the leakage source by using impulse response and a concentration sensor array during leakage of a utility tunnel gas pipeline. The method comprises the steps that release of an impulse source is conducted at a potential leakage source position, and a corresponding response matrix is obtained; according to concentration sensors in a utility tunnel cabin, fedback values can be monitored in real time; and in the combination of a regularization method and a Bayesianprobability model, the intensity and the position of the leakage source are calculated. By means of the method, arrangement can be quickly conducted, the position of the leakage source of the utilitytunnel gas pipeline is accurately inversely estimated, it is of great significance to safety engineering, and the method can be extended to identification of pollution source of an interior space.

Description

[0001] (1) Technical field [0002] The invention belongs to the field of urban public safety, and in particular relates to a method for identifying gas leakage sources of gas pipelines in a cabin of a comprehensive pipeline gallery. [0003] (2) Background technology [0004] The urban underground comprehensive pipe gallery is a centralized pipeline laying method that integrates various pipelines such as water, electricity, communication, and gas. Compared with the traditional directly buried pipe gallery, it occupies less underground space and avoids repeated ground work. Excavation construction plays a very good role in guaranteeing urban traffic and urban development. However, the comprehensive pipe gallery belongs to the small underground space. At the same time, the entry of gas pipelines into the corridor also poses a major hidden danger to the safety of the comprehensive pipe gallery. The danger caused by gas leakage and explosion is also huge, which is also harmful to ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F17D5/02G01N33/00
CPCF17D5/02G01N33/0063G01N33/0067
Inventor 周康李斐庄俊亿蔡浩
Owner NANJING UNIV OF TECH
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