Method and apparatus for detecting pipe leakage

A technology of pipeline leakage and detection device is applied in the field of detection of leakage of fluid conveying pipelines, which can solve the problem of high cost

Active Publication Date: 2006-10-11
PIPECHINA SOUTH CHINA CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it is still necessary to add many ultrasonic sensors and related equipment in addition to the commonly used or installed meters in the fluid pipeline, which still appears to be costly

Method used

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  • Method and apparatus for detecting pipe leakage
  • Method and apparatus for detecting pipe leakage
  • Method and apparatus for detecting pipe leakage

Examples

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Embodiment

[0018] Embodiment: The present invention will be further described with an example that has been tested and succeeded on the oil pipeline below. This example has been applied to Tieqin crude oil pipeline. Install a pressure transmitter, safety retainer or distributor on the pipelines at the entrance and exit of each intermediate station, and measure the pressure change between the two stations (the negative pressure wave of pipeline leakage) and the signal reaches the two stations respectively. The time of the station (based on the clock of the station controller) and the average of 5 time differences between the two stations, and the distance between the two stations (a certain number), the specific location of the leak can be calculated. The alarm of pipeline leakage (see Figure 2) is identified by the two-way signal of the inbound and outbound pressure through the automatic identification signal conversion unit to detect the inbound or outbound pressure. When there is a neg...

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Abstract

The invention discloses a method for detecting the leakage of fluid transmission tube, and relative device. Wherein, it uses the pressure sensor at each station of tube to measure the time difference and the average valve of leakage pressure change signals between two stations that reaching the said two stations, to calculate the position of leakage point; the pressure change signal of entering and exiting the station, via the automatic recognize signal convert unit, is processed with recognize pressure station pass and the pump start processes; the automatic recognize signal convert unit outputs delta valve for controlling switch process; the amplify compare unit detects the entering or exiting pressure signal, which is be amplified by the amplify driving unit to drive the alarm unit. The invention has simple process and lower cost, while it can real-time alarm to prompt user, with high sensitivity, high automatic degree and simple operation.

Description

technical field [0001] The invention relates to a detection method and device for leakage of a fluid delivery pipeline. It relates to the measurement of fluid pressure and the technical field of piping systems. Background technique [0002] Fluid pipelines always leak due to various reasons during operation, especially those pipelines that have been in operation for a long time, such as corrosion and perforation, man-made or natural force majeure, etc. It is very important for pipeline operators and managers to grasp the information of perforation and accurate location in time. Therefore, various countries in the world have successively studied various methods and devices for detecting pipeline leakage. For example, the optical fiber detection method developed by the research and development of optical fiber technology, although this technology is reliable in detection and accurate in positioning, it can even perceive the information of digging and touching pipelines, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M3/28
Inventor 周建华景树森
Owner PIPECHINA SOUTH CHINA CO
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