An online multi-component gas analysis photoacoustic spectrometer

A gas analysis and multi-component technology, applied in the analysis of materials, material analysis through optical means, instruments, etc., can solve the problems of poor real-time performance and single detection gas

Active Publication Date: 2022-07-08
安徽宝龙环保科技有限公司
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  • Abstract
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  • Claims
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Problems solved by technology

[0004] However, the traditional photoacoustic spectroscopy has strict requirements on the pre-treatment of gas detection to avoid contamination of the lens by gas impurities; the real-time performance is not strong; only one photoacoustic cavity detects a single gas

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  • An online multi-component gas analysis photoacoustic spectrometer
  • An online multi-component gas analysis photoacoustic spectrometer
  • An online multi-component gas analysis photoacoustic spectrometer

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Embodiment Construction

[0022] Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. Where the following description refers to the drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the illustrative examples below are not intended to represent all implementations consistent with this disclosure. Rather, they are merely examples of apparatus and methods consistent with the aspects disclosed in the present embodiments, as recited in the appended claims.

[0023] see Figure 1-2 , In the embodiment of the present invention, an online multi-component gas analysis photoacoustic spectrometer includes a light source 1, a filter chopper, an air inlet 4 and a photoacoustic cell assembly linearly arranged in sequence; the filter chopper and An air curtain 2 is arranged between the air inlet 4, the air inlet 4 and the photoacoustic pool assembly;...

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Abstract

The invention relates to the technical field of gas photoacoustic spectrum detection, in particular to an online multi-component gas analysis photoacoustic spectrometer, comprising light sources, filter choppers, air inlets and photoacoustic cell components arranged linearly in sequence; An air curtain is arranged between the chopper and the air inlet, the air inlet and the photoacoustic pool assembly; the photoacoustic pool assembly includes a plurality of photoacoustic pools connected in series, and each of the photoacoustic pools is installed with a The sound sensor connected to the control module, one of the photoacoustic cells encapsulates the reference gas, and the other photoacoustic cells respectively encapsulate the same gas as any component gas in the measured gas; the emitted light of the light source is filtered and chopped The filter filters the injection into the air inlet and the photoacoustic cell assembly; each of the sound sensors collects the photoacoustic signal generated by the corresponding photoacoustic cell and transmits it to the control module. The beneficial effects are: the plurality of photoacoustic cells connected in series can simultaneously measure multiple components on-line, and complex pretreatment of the gas to be measured is not required.

Description

technical field [0001] The invention relates to the technical field of gas photoacoustic spectrum detection, in particular to an online multi-component gas analysis photoacoustic spectrometer. Background technique [0002] Gas detection technology has a wide range of applications in modern society, such as the determination of harmful gas content in the air, vehicle exhaust gas detection, and flue gas detection in power plants and cement plants. These are inseparable from gas detection technology; this technology is applied to substances. Photoacoustic effect. When a sample placed in an airtight container is irradiated with light whose intensity is modulated by a chopper and changes periodically at a certain frequency, a sound wave with the same frequency as the chopper can be generated in the container; this phenomenon is called the photoacoustic effect. [0003] Photoacoustic spectroscopy is a relatively mature gas detection technology at present. Photoacoustic spectrosco...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/17G01N21/03
CPCG01N21/1702G01N21/03G01N2021/1704G01N2021/0357Y02A50/20
Inventor 崔凯刘进马磊潘英杰方传胜吴丽明吴菲
Owner 安徽宝龙环保科技有限公司
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