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Spatial light reflection type gas pool used for detecting gas spectral absorption

A spectral absorption, gas cell technology, applied in color/spectral characteristic measurement, measurement device, material analysis by optical means, etc., can solve the problems of reduced gas detection efficiency, short gas absorption optical path, low detection sensitivity, etc. The effect of reducing the difficulty of machining, long collimation distance and high sensitivity

Inactive Publication Date: 2017-05-31
BEIJING RES INST OF TELEMETRY +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, in TDLAS gas detection, the light source of the gas cell mostly uses a laser with optical fiber output. This kind of laser increases the coupling process of spatial light to the optical fiber, which causes the loss of optical power, reduces the efficiency of gas detection, and increases the cost; and Some gas cells that use spatial light output do not adopt corresponding adjustment measures at the light emitting end, resulting in short gas absorption optical path and low detection sensitivity

Method used

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  • Spatial light reflection type gas pool used for detecting gas spectral absorption
  • Spatial light reflection type gas pool used for detecting gas spectral absorption
  • Spatial light reflection type gas pool used for detecting gas spectral absorption

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Embodiment Construction

[0032] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0033] Such as figure 1 Shown is a schematic structural view of the space light reflection type gas pool of the present invention, the space light reflection type gas pool of the present invention includes a rear sleeve 1, a front sleeve 2, an air outlet nozzle 3, an air inlet nozzle 4, a corner pyramid prism 5, and a prism pressure ring 6. Set head 7, photoelectric preamplifier circuit printed board 13, photodetector 14, printed board gasket 15, fastening screw 21, temperature sensor 22, light emitting unit and the adjustment mechanism of the light emitting unit.

[0034] One end of the rear sleeve 1 and one end of the front sleeve 2 are fastened through threaded connection, the air outlet 3 is fastened on the rear sleeve 1 through a threaded connection, and the air inlet nozzle 4 is fastened on the front sleeve 2 through a threaded connection ...

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Abstract

The invention relates to a spatial light reflection type gas pool used for detecting gas spectral absorption. The spatial light reflection type gas pool comprises a front sleeve, a rear sleeve, an gas inlet nozzle and an gas outlet nozzle, wherein the gas inlet nozzle and the gas outlet nozzle are arranged on the front sleeve and the rear sleeve respectively; the tail end of the front sleeve is connected with a sleeve head, a light emission assembly is arranged on the sleeve head, a temperature sensor is arranged on the sleeve head and used for temperature compensation, a photovoltaic conversion pre-amplification electric circuit is put on the sleeve head, and a light receiving element is arranged on the photovoltaic conversion pre-amplification circuit; a cube-corner prism and a prism pressing ring are arranged at the tail end of the rear sleeve, the cube-corner prism is used for reflecting laser so that the absorption optical path of gas can be double increased, and the detection sensitivity of a gas measurement system can be improved. The light emission assembly of the gas pool is easy to adjust, the output laser is small in light spot and high in collimation, and the gas pool is high in stability and can be applied to an optical gas detecting devices and instruments.

Description

technical field [0001] The invention relates to the technical field of gas detection, in particular to a space light reflective gas cell for gas spectral absorption detection, in particular to a gas cell with tunable diode laser absorption spectrum (TDLAS) gas detection technology. Background technique [0002] With the continuous development of science and technology, more and more gas detection is involved in the fields of industry, mine, environment, transportation, aerospace, etc., especially the atmospheric environmental pollution, the production process of the chemical industry, and the special needs of aerospace. increasingly receiving widespread attention. [0003] Among many gas detection technologies, TDLAS gas detection technology has been widely used in environmental monitoring, chemical production pipelines, aerospace and other fields due to its excellent characteristics. [0004] At present, in TDLAS gas detection, the light source of the gas cell mostly uses ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/39G01N21/01G01N21/03
Inventor 郑林郑义彭泳卿
Owner BEIJING RES INST OF TELEMETRY
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