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a gas absorber

A gas absorption cell and absorption cell technology, applied in instruments, measuring devices, scientific instruments, etc., can solve the problem of difficult realization of optical path, and achieve the effect of changing detection accuracy and facilitating operation

Active Publication Date: 2020-04-10
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In general, the position of the incident beam can be easily changed by adjusting the light source, and the deflection angle can be directly fine-tuned. However, in order to ensure the accuracy of the measurement results, the detection is often carried out in a closed device, but the optical path is adjusted in a closed space. difficult to realize

Method used

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Embodiment 1

[0071] Such as Figure 1 to Figure 4 Shown is the gas absorption cell 100 provided by the embodiment of the present invention.

[0072] The incident light enters the cavity 1 of the absorption cell through the entrance 11 of the absorption cell. The incident light is irradiated on the third reflector A3, the laser is reflected by the third reflector A3, after passing through the first reflector A1, the second reflector A2 is reflected back and forth for many times, and finally the light is incident on the convex lens 2, by The convex lens 2 converges to the exit port 12 .

[0073] Such as figure 2 As shown, a structure of a gas absorption cell 100 includes an absorption cell cavity 1, an entrance port 11, an exit port 12, a first reflective mirror A1, a second reflective mirror A2, a third reflective mirror A3, a connecting rod 22, and a spring 25 , Worm screw 24, worm wheel 23, optical path adjustment rod 21 and convex lens 2. The absorption pool cavity 1 is trapezoidal;...

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Abstract

The invention discloses a gas absorption cell, which comprises an absorption cell cavity, a first reflective mirror, a second reflective mirror, a convex lens, a third reflective mirror, and an optical path adjustment device. The optical path adjustment device can adjust the deflection angle of the third mirror. A gas absorption cell disclosed in the present invention effectively changes the incident light passing through the gas to be measured in the cavity of the absorption cell through the cooperation between the first reflector, the second reflector, the convex lens, the third reflector, and the optical path adjustment device. The optical path can change the detection accuracy of the system, and the change of the optical path is controlled by the optical path adjustment device, which is convenient for operation.

Description

technical field [0001] The invention relates to the field of laser gas detection instruments, in particular to a gas absorption cell. Background technique [0002] With the development of industrialization, toxic and harmful gases have become a problem that we have to face in production and life. Fields that require gas detection include the petrochemical industry, environmental emergency, storage and transportation of dangerous goods, landfills and even urban sewage treatment, various underground pipelines, etc. We may be threatened by dangerous gases without knowing it . Therefore, more and more people pay attention to the research of gas detection. [0003] In industrial production, TDLAS (Tunable Diode Laser Absorption Spectroscopy, Tunable Diode Laser Absorption Spectroscopy) technology is often used for gas detection. After the light passes through the absorption cell filled with the gas to be detected, the light of a single frequency is absorbed by the gas to be me...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/03
CPCG01N21/0303
Inventor 王彪梁磊陈超杨凯陈越陈垒鹿洪飞刘昱峰范兴龙张国军
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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