A hand-held methane remote meter
A remote meter and handheld technology, applied in the field of gas detection, can solve the problems of inability to accurately determine the leakage point of natural gas pipelines, the inability of sensors to provide methane leakage, and a large amount of manpower and material resources, so as to avoid calculation and database comparison, high reliability, The effect of low concentration and high precision methane detection
Active Publication Date: 2017-08-11
TSINGHUA UNIV
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Problems solved by technology
Although there are methane leakage detection systems in the methane production and processing enterprises in the prior art, the fixedly configured sensors cannot give the specific location of the methane leakage
Moreover, long-distance pipeline inspections such as natural gas pipelines require a lot of manpower and material resources
Traditional natural gas detection equipment such as chemical detection methods and electrochemical sensors need to be in contact with the methane to be measured, and the distributed sensors cannot accurately determine the specific leakage point of the natural gas pipeline leakage
When a natural gas leak occurs, inspectors need to enter a dangerous environment to detect the concentration of methane, and there is a certain risk
Method used
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[0023] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.
[0024] Such as Figure 1~2 As shown, the handheld methane telemeter of the present invention includes a housing 1, a control device 2, a laser 3, a measuring device 4 and a reference device 5, wherein the laser 3 is a narrow-linewidth semiconductor laser; the control device 2 It is arranged at the rear of the housing 1 and is used to control the laser output of the laser 3. The laser 3 is arranged inside the housing 1. The laser output from the laser 3 is divided into two parts. One part of the laser is used to irradiate the environment 6 to be tested. The measurement light scattered by the background scatterer 7 is collected by the measurement device 4 arranged at the front of the housing 1, and the measurement device 4 converts the collected measurement light into a signal to be measured and sends it to the control device 2; the other part of the la...
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The invention relates to a handheld remote methane monitor which comprises a shell, a control device, a laser, a measurement device and a reference device, wherein the laser adopts a narrow linewidth semiconductor laser; the control device, the laser and the reference device are fixedly arranged at one side inside the shell; the measurement device is arranged at the other side inside the shell; the input end of the laser is connected with the output end of the control device; the output end of the laser is connected with the input end of an optical fiber beam splitter; and the output end of the optical fiber beam splitter is connected with the measurement device and the reference device by virtue of a measuring light path optical fiber and a reference light path optical fiber. According to the handheld remote methane monitor disclosed by the invention, the specific leakage place of methane can be remotely and accurately determined.
Description
technical field [0001] The invention relates to the technical field of gas detection, in particular to a hand-held methane remote detector. Background technique [0002] Methane has a wide range of applications in nature. As a fuel, methane is the main component of natural gas, biogas, oilfield gas and coal mine tunnel gas, and can be used as a standard fuel for calorific value testing of water heaters or gas furnaces. In addition to being used as fuel, methane is also an important chemical raw material. For example, carbon black can be obtained after pyrolysis of methane, and carbon black can be used as additives for pigments, inks, paints and rubber. Methane can also be used as a raw material for the production of hydrogen, carbon monoxide, acetylene, hydrocyanic acid, and formaldehyde. It is also a carbon source for solar cells, amorphous silicon film meteorological chemical deposition, and a raw material for pharmaceutical and chemical synthesis. [0003] Although the ...
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IPC IPC(8): G01N21/47G01N21/01
Inventor 丁武文孙利群
Owner TSINGHUA UNIV