Array-type multi-optical-path system for gas-phase monitoring

An array type, multi-optical path technology, applied in the field of array type multi-optical path system, can solve problems such as complex manufacturing process, poor system stability, and unfavorable on-site testing, so as to increase the effective optical path length and avoid the trouble of coaxial adjustment , the effect of simple structure

Active Publication Date: 2013-11-20
深圳市雷影光电科技有限公司
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

However, in the existing absorption cells, the absorption cell with simple manufacturing process and stable system can achieve a small effective optical path; the absorption cell with a large optical path has complicated manufacturing process and poor system stability, which is not easy to achieve. Conducive to field testing and other technical issues

Method used

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  • Array-type multi-optical-path system for gas-phase monitoring
  • Array-type multi-optical-path system for gas-phase monitoring
  • Array-type multi-optical-path system for gas-phase monitoring

Examples

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Embodiment 1

[0045] An arrayed multi-optical path system for gas phase monitoring comprises an arrayed multi-optical path absorption pool and a four-phase spectrometer, and the arrayed multi-optical path absorption pool is connected to the four-phase spectrometer by an optical fiber. The arrayed multi-path absorption cell is composed of multiple miniature plane mirrors, an open air chamber and an entrance hole. A plurality of miniature plane mirrors are arranged on the upper and lower surfaces of the open air chamber. The plane mirrors are arranged in an array and placed at an angle of π / 4 with the upper or lower surface. The last plane mirror is placed horizontally on the upper or lower surface. The lower surface; the upper surface of the open air chamber is provided with an incident hole for the incident light beam, and the incident hole is also an exit hole for the outgoing light beam. Open air chamber sides feature removable sealing panels with sealing grooves on each side. One of the...

Embodiment 2

[0048] An array multi-light path system for gas phase monitoring includes a four-phase spectrometer and an optical long-range absorption cell. The four-phase spectrometer includes an incident light hole 1 , an exit light hole 2 , a photodetection receiving hole 3 , a photodetection receiving hole 4 and an optical fiber connector 8 . The incident laser light enters through the incident light hole 1, the projected light is reflected by the beam splitter 5 and enters the exit light hole 2, and the reflected light enters the photodetection receiving hole 3, and the detector installed in the photodetection receiving hole 3 receives the optical signal. The optical signal enters the optical fiber 7 from the exit light hole 2, and after a certain distance of transmission, enters the multi-optical path absorption cell 9 through the optical fiber joint 8. After being reflected in the absorption pool 9, the optical signal passes through the optical fiber connector 8, and the optical sign...

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Abstract

The invention relates to an array-type multi-optical-path system for gas-phase monitoring, and belongs to the technical field of gas-phase monitoring. The array-type multi-optical-path system for gas-phase monitoring comprises an array-type multi-optical-path absorption pool and a four-phase spectrometer which are connected with each other via fiber; the array-type multi-optical-path absorption pool is formed by multiple miniature planar mirrors, an open-type air chamber, an fiber coupler and an incidence hole; the planar mirrors are disposed in an arrayed manner, the included angle of each planar mirror and an upper surface or a lower surface is pi/4, and the last planar mirror is disposed horizontally; the four-phase spectrometer comprises an incidence light hole, an emergent light hole, two photodetection reception holes and a spectroscope; the incidence light hole and the emergent light hole are disposed oppositely; the two photodetection reception holes are disposed oppositely; and the spectroscope is disposed at the center of the spectrometer along the diagonal line of the spectrometer. The array-type multi-optical-path system has the advantages of simple structure, stable performance, convenient monitoring, self-settable valid optical path, and applicability to monitoring on production field gas-phase components and concentration.

Description

technical field [0001] The invention belongs to the technical field of gas phase monitoring, in particular to an array type multi-light path system for gas phase monitoring. Background technique [0002] At present, with the rapid development of industries such as petroleum, coal mines, chemistry, and metallurgy, people's living standards are gradually improving. Accompanied by the rapid increase of various flammable gases and toxic gases produced by industrial production, explosion accidents and air pollution at production sites have occurred one after another, posing a great threat to human living environment and property safety. Therefore, the detection of flammable gases and toxic and harmful gases is particularly important. [0003] There are various gas detection methods, and the detection method using spectral absorption has the characteristics of large-scale, multi-component, continuous real-time monitoring, and is an ideal method for gas phase component and concent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/03
Inventor 杨牧李再春刘伟向安
Owner 深圳市雷影光电科技有限公司
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