Method for measuring distance between natural gas pipe leakage detecting sensors

A natural gas pipeline and leakage detection technology, which is applied in the field of interval measurement of natural gas pipeline leakage detection sensors, can solve problems such as poor anti-interference ability, and achieve the effect of improving sensing sensitivity

Active Publication Date: 2013-03-27
BC P INC CHINA NAT PETROLEUM CORP +1
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Problems solved by technology

However, this type of technology is affected by interference events around the pipeline when

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  • Method for measuring distance between natural gas pipe leakage detecting sensors
  • Method for measuring distance between natural gas pipe leakage detecting sensors
  • Method for measuring distance between natural gas pipe leakage detecting sensors

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[0027] Example. This example is a natural gas pipeline leakage monitoring system based on optical fiber sensing (see figure 1 ) To determine. The method for measuring the interval of pipeline leakage sensors is: the same method of generating analog leakage signals is used in the buried pipeline in the same environment as the site, that is, the leakage signal is simulated at the location where the sensor is installed for time delay estimation, combined with the propagation speed of the leakage vibration wave signal Realize the measurement of the sensor interval, that is, the length of the pipeline between two sensors.

[0028] When measuring the sensor interval of the natural gas pipeline leakage monitoring system, after artificially generating an analog leakage signal (see figure 2 ), the analog leakage signal excites the pipeline to produce vibration waves, which propagate along the pipeline at a speed V, where the interval between two adjacent sensors is the set value L, and t...

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Abstract

The invention discloses a method for measuring distance between natural gas pipe leakage detecting sensors and relates to the technical field of mechanical vibration measurement, impact measurement and a pipe system. The method is used for measurement on the basis of an optical fiber sensed natural gas pipe leakage monitoring system; and a leakage signal is simulated at the position where the sensors are arranged, the signal transmitting time is estimated, and the distance between two sensors, i.e. the length of a pipe between the two sensors, is measured by combining the propagation speed of a leakage vibrating wave signal. The measurement on the pipe leakage detecting sensor distance is high in accuracy.

Description

technical field [0001] The invention relates to a method for measuring the interval of a natural gas pipeline leakage detection sensor. It involves the measurement of mechanical vibration, the measurement of impact and the technical field of piping system. Background technique [0002] At present, the total length of pipelines built in the world has reached 2.5 million kilometers, which has surpassed the total mileage of railways and has become the main mode of energy transportation in the world. Oil transportation in developed countries and oil-producing regions in the Middle East has all realized pipelines. my country's pipelines have also developed rapidly in recent years, with a total length of more than 70,000 kilometers. A large energy pipeline network has initially formed across the east, west, north and south, covering the whole country, and connecting overseas. Pipeline transportation has become the deployment of strategic energy such as oil and gas. The main method...

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Application Information

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IPC IPC(8): F17D5/02
Inventor 张金权王小军李东焦书浩侯志相王飞方德学闫会朋张俊杨徐伟瑞
Owner BC P INC CHINA NAT PETROLEUM CORP
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