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Positioning distributed fibre-optical temperature sensing monitor and method for pipeline leakage

A distributed optical fiber and monitoring device technology, which is applied in the direction of measuring devices, fluid tightness testing, machine/structural component testing, etc., can solve problems such as threats to people's lives and safety, lack of monitoring methods and means, and improve monitoring horizontal effect

Inactive Publication Date: 2005-12-28
秦一涛
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, pipeline leakage disasters have directly threatened people's lives and safety, and there is a lack of effective and scientific monitoring methods and means.

Method used

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  • Positioning distributed fibre-optical temperature sensing monitor and method for pipeline leakage
  • Positioning distributed fibre-optical temperature sensing monitor and method for pipeline leakage
  • Positioning distributed fibre-optical temperature sensing monitor and method for pipeline leakage

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Embodiment Construction

[0025] The implementation takes the basic principle of the monitoring device as an example.

[0026] The distributed optical fiber temperature sensor (DTS) system is composed of a host, a sensing optical cable and other configurations. It is mainly based on the optical time domain reflectance (OTDR) of the optical fiber and the temperature effect of the back Raman scattering of the optical fiber. An optical fiber of several kilometers or even tens of kilometers (optical fiber or optical cable is both a transmission medium and a sensing medium) is laid in the space to be measured, which can continuously measure and accurately locate the temperature of the space where the entire optical fiber is located, and can pass through the optical fiber Changes in temperature ( Figure 7 ), the gas in the environment where the optical fiber is located ( Figure 8 , Picture 9 ) And liquid ( Picture 10 , Picture 11 ) Leakage, thus expanding the field of its application.

[0027] The optical fib...

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Abstract

A distributing fibre-optical temperature transducer for positioning leakage of piping is prepared by connecting main components of two - way coupler, wavelength division multi-plexer, photoelectric diode, amplifier, sampling average accumulator, computer, driver and laser diode to sensing cable. Its positioning method is that laying a piece of sensing cable in parallel near piping and detecting distribution curve of cable temperature for judging position of piping leakage.

Description

Technical field [0001] The invention relates to the field of pipeline engineering leakage safety prevention equipment, and is a pipeline leakage positioning distributed optical fiber temperature sensing monitoring device and method. Background technique [0002] Pipelines are an important part of underground transportation in the energy industry, and they are widely used for the transportation of liquids and gases. According to different actual applications, the technical standards, safety technology requirements and measured data are also very different. Leak detection system is very necessary to prevent economic loss and environmental pollution. At present, the monitoring method of the leakage of the optical fiber sensor in the oil and gas pipeline has been disclosed in the patent literature. The invention discloses an intelligent online monitoring method for the leakage of the oil and gas pipeline based on the distributed optical fiber sensor. Lay one or several optical cables...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M3/00
Inventor 秦一涛
Owner 秦一涛
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