Laser gas concentration measurement equipment probe device

Abstract

The invention discloses a probe device for a laser gas concentration measuring instrument, belonging to the gas concentration measurement technical field. The invention is to solve the problem that the invention provides the probe device for the laser gas concentration measuring instrument which can stably, reliably and accurately measure the gas concentration with the function of automatic calibration. The probe device adopts the proposal that: the probe device for the laser gas concentration measuring instrument mainly comprises a laser source, an optical collector, an ocular, an infrared photosensitive tube, an objective and a semi-transparent beam-splitter, wherein, the laser source is arranged on the leftmost position; the laser source is coaxially and horizontally provided with the optical collector, the ocular and the objective in turn; the semi-transparent beam-splitter is fixed between the ocular and the objective; the infrared photosensitive tube is arranged on the upper part of the semi-transparent beam-splitter; and a light blocking device is arranged between the semi-transparent beam-splitter and the objective and can selectively open up or shield signal lights which are reflected to the semi-transparent beam-splitter through the objective. The probe device can be widely applied in various gas concentration measurement fields.

Description

technical field [0001] The invention relates to a probe device for laser gas concentration measuring equipment, in particular to a probe device made by using the principle of laser gas spectral absorption, which is used for electric power industry, chemical industry, cement industry, iron and steel industry, waste incineration industry, hazardous waste incineration, The utility model relates to a probe device for online continuous measurement equipment for the concentration of gas discharged from fixed discharge sources produced in various industrial boilers, kilns and other industrial processes, and belongs to the technical field of gas concentration measurement. Background technique [0002] For the power industry, chemical industry, cement industry, iron and steel industry, waste incineration industry and other industries, in order to meet the requirements of emission of flue gas pollutants, safety production control, and optimization of production technology, an online mo...

AI Technical Summary

Problems solved by technology

Existing on-line gas monitoring and analysis systems generally use extraction technology. After complex pretreatment, optical methods or electrochemical methods are used to measure and analyze the concentration of gas components in it. Most of these gas concentration measurement methods use infrared light sources However, during the measurement process, there are many factors that affect the change of the gas composition, thus affecting the accuracy of the measurement, such as the change of the external environment and temperature, the deviation of the sample gas from the original environmental state and the composition Changes, power line interference, etc. will affect the changes in the light intensity of the light source and the reception of the photosensitive device

Although certain measures have been taken, such as heat-tracing and heat-preservation transmission of the sample gas, and high-temperature analysis and measurement, due to the harsh outdoor environment and use conditions, the measurement of gas concentration will always be affected by various particles in flue gas and industrial process gas, and sampling institutions. Defects, especially the influence of water components, make the measurement inaccurate and affect the accuracy of the measurement

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