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Mobile single-frequency differential natural gas pipeline leakage laser remote sensing detection system and single-frequency differential natural gas pipeline leakage laser remote sensing detection method

A technology of natural gas pipeline and detection system, which is applied in the field of mobile single-frequency differential natural gas pipeline leakage laser remote sensing detection system, can solve problems such as high price, and achieve the effects of low maintenance cost, convenient use and fast response speed.

Inactive Publication Date: 2011-09-07
ANHUI INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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  • Description
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  • Application Information

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Problems solved by technology

The lasers currently available for differential lidar detection of methane molecules are mainly optical parametric oscillators (OPOs), which are extremely expensive

Method used

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  • Mobile single-frequency differential natural gas pipeline leakage laser remote sensing detection system and single-frequency differential natural gas pipeline leakage laser remote sensing detection method
  • Mobile single-frequency differential natural gas pipeline leakage laser remote sensing detection system and single-frequency differential natural gas pipeline leakage laser remote sensing detection method

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Embodiment Construction

[0019] Mobile single-frequency differential natural gas pipeline leakage laser remote sensing detection system and method, including signal detection system and computer 218, signal detection system includes methane gas detector, GPS global positioning system 220 and CCD camera 221, GPS global positioning system 220 and CCD The camera 221 communicates with the computer 218, and the lens of the CCD camera 221 is aimed at the pipeline target 113 to be tested;

[0020] The methane gas detector includes a microprocessor 217, a Cassegrain telescope 120, and a laser 226. The microprocessor 217 communicates with a computer 218, and the microprocessor 217 is electrically connected to a digital-to-analog converter 219 and an analog-to-digital converter 216. , the analog-to-digital converter 216 is electrically connected to three identical lock-in amplifiers; the lens barrel of the Cassegrain telescope 120 is provided with a beam shaping module 110, and the main mirror 121 of the Cassegr...

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Abstract

The invention discloses a mobile single-frequency differential natural gas pipe line leakage laser remote sensing detection system and a single-frequency differential natural gas pipeline leakage laser remote sensing detection method. The system comprises a signal detection system and a computer, wherein the signal detection system comprises a methane gas detector, a global positioning system GPS, a CCD camera. The GPS and the CCD camera perform signal communication with the computer; the lens of the CCD camera is pointed at a pipe target to be detected; and the methane gas detector is used for detecting a leaking pipe. The system is simple in structure and is easy to use, the response speed of the whole system is high and the whole system can be carried by a vehicle or other moving carriers in order to be used. Therefore, the use of the system is convenient and the maintenance cost of the system is low.

Description

technical field [0001] The invention relates to the field of remote sensing detection, in particular to a mobile single-frequency differential natural gas pipeline leakage laser remote sensing detection system and method for laser remote sensing detection of natural gas pipeline leakage in a mobile mode. Background technique [0002] Since the 1990s, my country's natural gas pipelines have developed rapidly, the field of natural gas consumption has gradually expanded, and urban gas, power generation, industrial fuels, and chemical gas have increased significantly. The mileage of the gas pipeline has increased greatly, and the leakage caused by the small holes on the natural gas pipeline network and its components, flanges, valves, pumps and their sealing rings is inevitable. Tens of thousands, the leaked gas not only directly caused economic losses, but also a source of inflammable, explosive and pollution. Rapid detection of pipeline leakage is especially important to redu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M3/00G01M3/38G01N21/31G02B23/02G02B27/10G01S19/01
Inventor 高晓明谈图汪磊
Owner ANHUI INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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