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Optical gas absorbing tank and optical gas sensor

A gas absorption cell and optical technology, which is used in scientific instruments, material analysis by optical means, instruments, etc., can solve the problems of slow response speed of optical gas sensors, single inlet direction of gas absorption cell, and low replacement rate.

Pending Publication Date: 2017-05-31
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide an optical gas absorption cell and an optical gas sensor, to solve the problem that the gas absorption cell of the optical gas sensor existing in the prior art has a single air intake direction, and the gas replacement rate of the gas to be detected in the optical gas absorption cell is relatively low. Small, leading to technical problems of slow response speed and low detection efficiency of optical gas sensors

Method used

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  • Optical gas absorbing tank and optical gas sensor
  • Optical gas absorbing tank and optical gas sensor
  • Optical gas absorbing tank and optical gas sensor

Examples

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Embodiment 1

[0031] This embodiment provides an optical gas absorption cell, such as figure 1 - Figure 4 As shown, it includes a housing 1 and a support rod 2, the housing 1 is provided with an air inlet 11 and an air outlet 12, the air inlet 11 is provided with an air inlet 111, and the air outlet 12 is provided with an air outlet 121; the support rod 2 is plugged into the inner cavity of the housing 1, one end of the support rod 2 is an air inlet insertion end 21, and the other end is an air outlet insertion end 22; The air passage 211 communicates with the air inlet 111, and the air outlet insertion end 22 is provided with an air outlet passage 221 along its axial direction, and the air outlet passage 221 communicates with the air outlet 121; The air vent hole 212 is provided with an air outlet vent hole 222 near the position of the air outlet plug-in end 22. The air intake vent hole 212 and the air outlet vent hole 222 are multiple, and are distributed along the circumferential direc...

Embodiment 2

[0049] This embodiment provides an optical gas sensor, comprising a laser emitting device and the optical gas absorption cell described in Embodiment 1, the laser output port of the laser emitting device is connected with the incident window of the optical gas absorption cell; the output of the optical gas absorption cell The window plate is connected with a signal processing device, and the optical gas sensor has all the technical effects of the above-mentioned optical gas absorption cell, which will not be repeated here.

[0050] In the optical gas sensor provided in this embodiment, the working principle of the optical gas absorption cell has been described in detail above, and will not be repeated here. The laser emitting device injects laser light into the incident window of the optical gas absorption cell, and the emitted laser light enters the signal processing device after passing through the optical gas absorption cell, and the relevant concentration information of the...

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Abstract

The invention provides an optical gas absorbing tank and an optical gas sensor and relates to the technical field of a gas detection and analysis device. The optical gas absorbing tank comprises a support rod which is used for supporting a shell and communicating an inner chamber of the shell with the outside. The optical gas sensor comprises a laser emitting device, the optical gas absorbing tank and a signal processing device for processing data. A to-be-detected gas enters a gas inlet vent hole at one end of the support rod in the manner of surrounding the periphery, so that the gas replacing rate in a gas absorbing chamber is increased and the gas replacement is thorough and free from dead angle. The technical problems of low response speed and low detection efficiency of the optical sensor in the prior art can be solved.

Description

technical field [0001] The invention relates to the technical field of gas detection and analysis devices, in particular to an optical gas absorption cell and an optical gas sensor. Background technique [0002] In recent years, the continuous high incidence of smog incidents has promoted the country to attach great importance to environmental protection. Correspondingly, the country has strengthened the production of automobiles, electric power, chemicals, metallurgy, textiles, pharmaceuticals, especially coal mines and petroleum industries in industrial production. The monitoring of exhaust gas in the process, among which, the detection and analysis of exhaust gas is very important. [0003] At present, the detection and analysis of gas mainly adopts tunable diode laser absorption spectroscopy technology (TDLAS or TDLS). Different currents and temperatures are input to the laser to obtain lasers with different wavelengths. Spectral analysis is performed on the lasers absor...

Claims

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Application Information

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IPC IPC(8): G01N21/39G01N21/01
CPCG01N21/01G01N21/39G01N2021/0112G01N2021/391
Inventor 章欣
Owner 章欣