Coal spontaneous combustion multicomponent index gas laser spectrum dynamic monitoring device
A gas laser and dynamic monitoring technology, which is applied in the direction of measuring devices, color/spectral characteristic measurement, and analysis of materials, can solve problems such as low stability and reliability, low sensitivity, and low selectivity, and achieve improved detection sensitivity and high Selectivity, effect of increasing absorption path
Active Publication Date: 2017-06-20
XIAN UNIV OF SCI & TECH +1
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Problems solved by technology
[0003] The purpose of the present invention is to solve the problems of low sensitivity, low selectivity, low stability and reliability of existing mine gas analysis instruments, and provide a Dyn
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[0020] Such as figure 1 , figure 2 , image 3 , Figure 4 As shown, the coal spontaneous combustion multi-component index gas laser spectrum dynamic monitoring device includes a coal spontaneous combustion multi-channel bundle tube gas extraction and intelligent control unit, a coal spontaneous combustion multi-component index gas laser spectrum optical path and detection unit, and an explosion-proof casing; The tube bundle gas collection and intelligent control unit includes eight-way pumping system, one-way purge gas system, one-way calibration gas system, control device and electric miniature negative pressure pump; the gas extraction system, purge gas system and calibration gas system all include The connected dust filter, water filter, flame arrester, pressure sensor, flow sensor and solenoid valve are all connected to the electric micro negative pressure pump, and the control device is used to control the electric micro negative pressure pump and solenoid valve to ext...
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The invention provides a coal spontaneous combustion multicomponent index gas laser spectrum dynamic monitoring device with high sensitivity, good selectivity, stability and high reliability. The monitoring device comprises a coal spontaneous combustion multi-beam tube gas production and intelligent control unit, a coal spontaneous combustion multi-component index gas laser spectrum optical path and detection unit, and an explosion-proof housing. The coal spontaneous combustion multi-component index gas laser spectrum optical path and detection unit for gas suction and sampling feeds gas into three gas absorption tanks orderly connected. The coal spontaneous combustion multi-component index gas laser spectrum optical path and detection unit comprises an O2 gas laser spectroscopy system, a near infrared wavelength other gas laser spectroscopy system and a C2H6 gas laser spectroscopy system. The spectroscopy systems transmit acquired data into a multi-path data acquisition card for signal processing and storage. The concentration measurement result is displayed by an industrial personal computer. The device is mainly used for coal spontaneous combustion multicomponent index gas laser spectrum dynamic monitoring.
Description
technical field [0001] The invention relates to a coal spontaneous combustion concealed fire source detection technology in a mine, in particular to a coal spontaneous combustion multi-component index gas laser spectrum dynamic monitoring device. Background technique [0002] Coal fire disasters spread all over the world and have become a global disaster. Coal spontaneous combustion fire is one of the five major disasters that threaten the safety of coal mine production. China is dominated by bituminous coal and lignite, and more than 90% of the spontaneous combustion tendency of the coal seam is prone to spontaneous combustion (Type I) or spontaneous combustion (Type II). During the coal mining process, coal seam spontaneous combustion fires are very serious, and the coal mining face is closed every year due to coal spontaneous combustion. More than 100. Spontaneous combustion of coal seams has repeatedly caused gas combustion and explosions, resulting in major casualties....
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Login to View More IPC IPC(8): G01N21/39G01N21/01G01N35/00
CPCG01N21/01G01N21/39G01N35/00584
Inventor 王伟峰
Owner XIAN UNIV OF SCI & TECH