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Device and method for infrasonic monitoring and pipe leakage positioning

A technology of infrasonic wave and infrasonic wave signal, which is applied in pipeline system, gas/liquid distribution and storage, mechanical equipment, etc. It can solve the problem that the parameters of infrasonic wave signal exceed the threshold, so as to reduce the impact and improve the signal-to-noise ratio

Inactive Publication Date: 2017-05-24
JILIN PROVINCE BAIRUISHENG SCI & TECH DEV
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Problems solved by technology

However, in practical applications, due to the influence of body noise and other factors in the pipeline, sporadic infrasonic signal parameters will exceed the threshold phenomenon. report

Method used

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  • Device and method for infrasonic monitoring and pipe leakage positioning
  • Device and method for infrasonic monitoring and pipe leakage positioning
  • Device and method for infrasonic monitoring and pipe leakage positioning

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Embodiment 1

[0043] Such as figure 1 As shown, the present invention provides a device for fully automatic monitoring and locating pipeline leakage, which specifically includes a main station system and two or more sub-station systems; wherein each sub-station system includes high-precision infrasonic sensors, valves, external power supply, digitizer;

[0044] Among them, the main station system is used to collect and process the signals transmitted by the sub-station system, issue alarm signals to the outside and issue instructions to the sub-stations;

[0045] In each substation, a high-precision infrasonic sensor is used to monitor the infrasonic signal generated in the pipeline and transmit the signal to the digitizer; the valve is located between the high-precision infrasonic sensor and the pipeline, and the valve is opened to communicate with the pipeline during normal operation; During maintenance, the valve is closed, and the high-precision infrasonic sensor can be monitored or re...

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PUM

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Abstract

The invention discloses a full-automatic online monitoring and positioning system and a method for leakage of fluids in pipes. The system comprises one set of main station systems and two or more sets of sub station systems, wherein each set of sub station systems include high-precision infrasonic sensors, valves, external power supplies and digital instruments. The method is combined with such algorithms as Kalman filtering, wavelet transform, gradient operator and region segmentation and a sequential probability ratio test method, and is combined with weak signals provided by the high-precision infrasonic sensors for multiple times of cross-correlation calculations so as to greatly improve the warning accuracy.

Description

technical field [0001] The invention discloses a device and method for fully automatic monitoring and locating pipeline leakage by using infrasonic waves, and belongs to the technical field of fluid conveying pressure pipeline leakage monitoring and locating. [0002] technical background [0003] The core of pipeline operation management is "safety and economy". In recent years, due to the frequent occurrence of catastrophic accidents caused by oil and gas pipeline leakage, the safe operation and maintenance of pipelines have been threatened and challenged. Use advanced scientific means to establish a pipeline safety pre-alarm system, monitor pipeline leakage accidents in real time through effective technical means, accurately issue leakage alarms and quickly locate them, so that production units can start corresponding emergency plans. To achieve the above functions, it is necessary to pass Technical means Continuously monitor changes in pipeline data, accurately and quick...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F17D5/06
CPCF17D5/06
Inventor 杨凯
Owner JILIN PROVINCE BAIRUISHENG SCI & TECH DEV
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