A kind of photoelectric gas sensor probe and photoelectric gas detection device

Abstract

The invention discloses a photoelectric gas sensor probe and a photoelectric gas detection device. The photoelectric gas sensor probe comprises a multi-point reflection two-dimensional optical path module body, a first plane reflection mirror embedded in the optical path module body, a second plane reflection mirror, a parallel Light source and photodetector; the reflective surfaces of the first plane reflector and the second plane reflector are arranged opposite and parallel to each other, and the centers of the first plane reflector and the second plane reflector are not on the same straight line; it also includes a device for fixing The triangular reflector block of the first plane reflector and the second plane reflector; the relative sharp angle of the two reflector blocks is consistent with the reflection angle of the parallel light beam emitted by the parallel light source; the present invention is fixed by setting the triangle block The parallel reflector and heating plate are added, which can effectively avoid the problems of moisture degumming and condensation, reduce the volume of the absorption cell, increase the measurement optical path, greatly improve the stability and reliability of the optical path, and reduce the production time. Debugging difficulty.

Description

technical field [0001] The invention relates to the technical field of photoelectric gas sensors, in particular to a photoelectric gas sensor probe and a photoelectric gas detection device. Background technique [0002] At present, in order to meet the increasing requirements of environmental safety detection and production safety monitoring, various photoelectric gas sensors based on tunable diode laser absorption spectroscopy (TDLAS) technology have been continuously developed and used in actual production to achieve real-time, online detection and measurement. Tunable Diode Laser Absorption Spectroscopy (TDLAS) technology utilizes the tunable and narrow spectral linewidth characteristics of semiconductor lasers. By tuning the laser wavelength at the spectral absorption peak of the gas to be detected, the laser wavelength can be precisely aligned with the measured gas. The absorption peak of the gas realizes the rapid detection of the gas concentration. At the same time,...

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Problems solved by technology

[0004] Therefore, when this type of sensor is used in the actual application site, the key technical problem that must be solved is how to prevent the mirror from condensation and solve the problem of viscose degumming due to moisture

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