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Vacuum cavity for tunable diode laser absorption spectroscopy (TDLAS) temperature measurement and calibration

A vacuum cavity and vacuum technology, applied in the field of vacuum cavity, can solve problems such as influence, achieve the effect of increasing absorption optical path, eliminating influence, and realizing angle adjustment

Active Publication Date: 2013-06-05
BEIJING DONGFANG MEASUREMENT & TEST INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Because the vacuum chamber in the prior art adopts the structural design of a single vacuum chamber, in use, for example, in the TDLAS temperature calibration system, the signal received by the photodetector will be affected by the residual test gas in the air

Method used

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  • Vacuum cavity for tunable diode laser absorption spectroscopy (TDLAS) temperature measurement and calibration

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Embodiment Construction

[0017] Below with the accompanying drawings ( figure 1 ) to illustrate the present invention.

[0018] figure 1 It is a structural schematic diagram of a vacuum chamber for implementing the present invention. Such as figure 1 As shown, the vacuum chamber includes an upper vacuum chamber 10 and a lower vacuum chamber 16 separated by a transmission mirror 15, the bottom of the lower vacuum chamber 16 is provided with a reflective mirror 18, and the side walls of the lower vacuum chamber 16 are respectively provided with The test gas charging port 11 and the vacuum obtaining system interface 14, the test gas charging port 11 is connected to the second charging valve 12, the vacuum obtaining system port 14 is connected to the second isolation valve 13, and the upper vacuum chamber 10 is respectively equipped with A collimator mounting frame 8 and a photodetector mounting frame 9 , and the side wall of the upper vacuum chamber 10 are provided with an optical fiber inlet 7 , a va...

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Abstract

A vacuum cavity for tunable diode laser absorption spectroscopy (TDLAS) temperature measurement and calibration is characterized by comprising an upper vacuum chamber and a lower vacuum chamber which are separated by a transmission lens. A reflecting mirror is arranged at the bottom of the lower vacuum chamber, a testing gas feeding port and a vacuum obtaining system connector are respectively arranged on a lateral wall of the lower vacuum chamber, the testing gas feeding port is connected with a second inflation valve, and the vacuum obtaining system connector is connected with a second isolating valve. A collimator installing frame and a photoelectric detector installing frame are respectively arranged in the upper vacuum chamber, and an optical fiber leading-in port, a vacuumizing port and an argon feeding port are respectively arranged on a lateral wall of the upper vacuum chamber.

Description

technical field [0001] The present invention relates to a vacuum chamber technology, in particular to a vacuum chamber, which can be used in a TDLAS temperature calibration system, and the TDLAS is the abbreviation of Tunable Diode Laser Absorption Spectroscopy, that is, tunable semiconductor laser absorption spectroscopy technology. Background technique [0002] Since the vacuum chamber in the prior art adopts the structural design of a single vacuum chamber, in use, for example, in a TDLAS temperature calibration system, the signal received by the photodetector will be affected by the residual test gas in the air. Contents of the invention [0003] The present invention aims at the defects or deficiencies existing in the prior art, and provides a vacuum cavity, which can be used in a TDLAS temperature calibration system, and the TDLAS is the abbreviation of Tunable Diode Laser Absorption Spectroscopy, that is, tunable semiconductor laser absorption spectrum technology. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/39
Inventor 贾军伟张书锋张明志路润喜栗继军刘展李绍飞金光远
Owner BEIJING DONGFANG MEASUREMENT & TEST INST
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