Atmospheric particulate sampling pipeline comprehensive quality control system

Abstract

The invention relates to an atmospheric particulate sampling pipeline comprehensive quality control system. According to the technical scheme, the atmospheric particulate sampling pipeline comprehensive quality control system comprises a particulate particle-size cutting head positioned outdoors, an analysis instrument positioned indoors and a first gas path; the inlet end of the first gas path isconnected with the particulate particle-size cutting head; the outlet end of the first gas path is connected with the analysis instrument; an outdoor pipeline part of the first gas path is also provided with an outdoor pipeline temperature probe; an indoor pipeline part of the first gas path is sequentially provided with a dynamic heat preservation device and an electrical control ball valve in agas inlet direction; an indoor pipeline temperature probe is also arranged on a first gas path pipeline at which the dynamic heat preservation device is positioned; the output ends of both the outdoor pipeline temperature probe and the indoor pipeline temperature probe are connected with the input end of a system control chip; the output end of the system control chip is respectively connected with the dynamic heat preservation device and the electrical control ball valve. The atmospheric particulate sampling pipeline comprehensive quality control system is simple in structure, easy to transform, can effectively keep a temperature of sampled gas constant, has a zero correction function, and is high in measurement accuracy, flexible and reliable.

Description

technical field [0001] The invention relates to the field of air purification, in particular to a comprehensive quality control system for atmospheric particle sampling pipelines. Background technique [0002] Atmospheric particulate matter, especially fine particles (PM 2.5 ) Pollution has become an important problem faced by human beings. Various instruments for analyzing atmospheric particulate matter have emerged as the times require and have been widely used. However, in practical applications, there will be some problems; 1) In summer, the outdoor temperature is high, and the indoor air conditioner As a result, the temperature of the indoor pipe wall is low, and when the high-temperature sampling gas enters the room, when encountering the low-temperature pipe wall, the water vapor in the sampling gas will condense rapidly, which has a great impact on the life of the instrument and data quality; 2) When winter The temperature of the outdoor sampling gas is low. After e...

AI Technical Summary

Problems solved by technology

[0002] Atmospheric particulate matter, especially fine particles (PM 2.5 ) Pollution has become an important problem faced by human beings. Various instruments for analyzing atmospheric particulate matter have emerged as the times require and have been widely used. However, in practical applications, there will be some problems; 1) In summer, the outdoor temperature is high, and the indoor air conditioner As a result, the temperature of the indoor pipe wall is low, and when the high-temperature sampling gas enters the room, when encountering the low-temperature pipe wall, the water vapor in the sampling gas will condense rapidly, which has a great impact on the life of the instrument and data quality; 2) When winter The temperature of the outdoor sampling gas is low. After entering the room, it encounters a relatively high temperature pipe wall, which will cause the volatilization of unstable components; 3) The instrument used for particle sampling needs to be calibrated regularly to ensure data quality. It is carried out on the 1st day of the month, but many instruments and older models do not have the function of automatic zero point calibration. Manual calibration is time-consuming and labor-intensive, and the labor cost is high; 4) Many instruments cannot perform automatic flow monitoring and have no effect on data quality. Guarantee; 5) Most instruments cannot monitor the temperature and humidity of the sampled gas in real time, two important indicators for observing / analyzing ambient air; 6) The valves controlling the gas path have not been verified, and the solenoid valve will cause the loss of particulate matter , the ball valve can effectively avoid this problem; 7) There is no system and control chip for the comprehensive control and management of the entire pipeline, and it is impossible to realize automatic or remote control / switching of the gas path, and it is impossible to receive the operating status of each monitoring device and remotely view the observation results

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