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Pipeline leakage positioning system and method based on collaborative detection with negative pressure wave and sound wave

A pipeline leakage and collaborative detection technology, which is applied in the pipeline system, mechanical equipment, gas/liquid distribution and storage, etc., can solve the problems of fast attenuation, achieve low cost, reduce false alarm rate, and the effect of simple and easy-to-use positioning method

Inactive Publication Date: 2011-02-09
NORTHEASTERN UNIV
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Problems solved by technology

The positioning accuracy of the acoustic wave detection method is high, but because the acoustic wave signal propagates on the pipe wall, the attenuation is very fast, so that this method can only have a significant effect within a limited distance

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  • Pipeline leakage positioning system and method based on collaborative detection with negative pressure wave and sound wave
  • Pipeline leakage positioning system and method based on collaborative detection with negative pressure wave and sound wave
  • Pipeline leakage positioning system and method based on collaborative detection with negative pressure wave and sound wave

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Embodiment Construction

[0031] The present invention is described in detail with reference to the accompanying drawings and embodiments.

[0032] In this embodiment: the model of GPS module is GUGSU36; the model of GPRS module is Q2403A; the model of acoustic wave sensor is Lance LC0107 series vibration sensor SN3563 used with LC0207 constant current source; the model of pressure sensor is ROSEMOUNT 3051 GP3A2B21AB4M5D1 differential pressure transmitter; The signal processing unit adopts the model TMS 320F2812; the intelligent high-speed real-time data sampling device adopts the intelligent high-speed real-time data sampling device of the invention patent with the application number 03133458X.

[0033] In this embodiment, the length of the pipeline is 360m, and the location 140m from the host computer at the first station is the simulated leakage location. Add a sound wave signal detection lower computer every 90m along the pipeline, so that there is a sound wave signal detection lower computer at a ...

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Abstract

The invention relates to pipeline leakage positioning system and method based on collaborative detection with negative pressure wave and sound wave, which belong to the technical field of fault diagnosis of a petroleum transmission pipeline. Leakage points in a pipeline are detected based on a conventional negative pressure wave technology, an upper computer and a pressure detection lower computer are arranged in two dispatching rooms at the front and rear ends of a long petroleum transmission pipeline and lower computers for sound wave signal detection are arranged on the long petroleum transmission pipeline at an interval of 0.5-1km. The invention has the advantages that by using the collaborative detection with the negative pressure wave and the sound wave, the invention can position the leakage points of the pipeline precisely and lower the false report rate effectively; because a GPRS technology is adopted for communication, the invention is free from paving lines, has low cost and is convenient to move. The positioning system benefits the avoidance of large data volume transmission and the improvement of the communication efficiency. The positioning method used by the upper computer is simple and easy to use.

Description

technical field [0001] The invention belongs to the technical field of oil pipeline fault diagnosis, in particular to a pipeline leakage location system and method based on negative pressure wave and acoustic wave cooperative detection. Background technique [0002] At present, the domestic detection technology of fluid conveying pipeline leakage mainly adopts the negative pressure wave detection method, which detects the occurrence of leakage according to the negative pressure wave generated when the pipeline leaks, and locates the leakage according to the time difference and wave velocity of the signals received by different pressure sensors. The negative pressure wave method is commonly used in long-distance pipelines, and has the characteristics of small calculation, high sensitivity, rapid inspection and alarm. However, the positioning accuracy of the negative pressure wave detection method is not high, and it is very easy to generate false alarms for the normal operati...

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Application Information

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IPC IPC(8): F17D5/06
Inventor 张化光冯健刘金海何鑫刘坚强马大中刘振伟张新刚
Owner NORTHEASTERN UNIV
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