Gas absorption tank used in absorption spectrum determination

A gas absorption cell and absorption spectrum technology, applied in the direction of color/spectral property measurement, measurement device, material analysis by optical means, etc. circulation and other problems, to achieve the effect of simple structure, fast turnover, and easy portability

Inactive Publication Date: 2013-06-05
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This not only easily causes gas turbulence and circulation, but also has a great impact on the concentration of gas in the chamber. At the same time, it takes a long time to complete the update of gas samples in the gas chamber, which is not conducive to the real-time and rapid detection of continuously changing gas samples.

Method used

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  • Gas absorption tank used in absorption spectrum determination
  • Gas absorption tank used in absorption spectrum determination

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Embodiment Construction

[0014] Such as figure 1 As shown, the gas absorption cell of the present invention includes a cell body 1 , a first plane mirror 2 , a second plane mirror 3 and a plane cover 4 . The first plane reflector 2 and the second plane reflector 3 are placed close to the two parallel plane side walls of the pool body 1 respectively, and the plane cover plate 4 covers the pool body 1 .

[0015] Such as figure 2 As shown, the upper surface 5 of the cell body 1 of the gas absorption cell of the embodiment of the present invention is a plane, the first side wall 6 of the cell body, the second side wall 7 of the cell body, the third side wall 8 of the cell body and the second side wall of the cell body The four side walls 9 are plane and perpendicular to the upper surface 5 of the pool body, the first side wall 6 of the pool body and the second side wall 7 of the pool body are parallel to each other, the third side wall 8 of the pool body and the fourth side wall 9 of the pool body are i...

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Abstract

The invention discloses a gas absorption tank used in absorption spectrum determination. The gas absorption tank comprises a tank body (1), two plane reflecting mirrors, and a gas chamber. The gas chamber is positioned between the two plane reflecting mirrors. A transmission path of multiple reflected beams is adopted as a main axis. A plane cover (4) is covered on the tank body (1). A plurality of optical windows are provided on the inner wall of the gas chamber of the gas absorption tank. The optical windows are formed by light reflection surfaces of the two plane reflecting mirrors, wherein the light reflection surfaces are exposed in a gas sample. The gas chamber of the gas absorption tank comprises a sample inflow port and a sample outflow port. Light beams are subject to one or moretimes of transmission in the area between the two plane reflecting mirrors. The gas sample flows along the transmission path of the multiple reflected beams.

Description

technical field [0001] The invention relates to a gas absorption cell for measuring gas components by absorption spectrum. Background technique [0002] At present, in many fields of application, it is necessary to use absorption spectroscopy to detect trace gases at the concentration level of ppm and ppb. In order to improve the detection sensitivity of absorption spectroscopy for low-concentration gases, increasing the length of the light beam passing through the gas sample is an effective method. Obviously, simply placing the light source and the detector far away, so that the light beam passes through a very straight and long transmission type gas sample cell, will make the device bulky, complicated in alignment, poor in temperature stability and shock resistance. "Folding" of the optical path is often used, ie the beam is reflected multiple times between mirrors to achieve effective optical path lengthening in a small spatial area. For example, White-type gas absorptio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/05G01N21/31
Inventor 闫存极鞠昱韩立殷伯华陈志琪谢亮
Owner INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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