Automatic sampling device for malodorous gas

Abstract

Provided is an automatic sampling device for malodorous gas. The automatic sampling device comprises a seal box, a measurement control unit and a gas concentration monitoring and alarming unit; the gas concentration monitoring and alarming unit comprises a concentration measurement module and an alarming module, and the alarming module sends an alarming signal to the measurement control unit after the odor concentration exceeds the set threshold value concentration; the seal box is internally provided with a gas bag collecting sampling gas, the gas bag is provided with a gas bag gas nipple which penetrates through the seal box to be connected to one end of a two-way solenoid valve, and the other end of the two-way solenoid valve is connected with a sampling inlet; the measurement control unit comprises a monitoring and alarming signal processing module receiving the alarming signal, a solenoid valve control module and a sampling pump control module, and the solenoid valve control module is electrically connected with the two-way solenoid valve so as to control switching-on and switching-off of the two-way solenoid valve. The sampling device is used for achieving on-site automatic identifying and sampling of the malodorous gas, and the problem that the best opportunity of sampling is missed due to the fact that a traditional method depends on artificial olfaction is solved.

Description

technical field [0001] The invention relates to the fields of environmental protection and environmental monitoring, and further relates to an automatic sampling device for malodorous gas. Background technique [0002] Odor is a kind of olfactory perception pollution that is perceived by the peculiar smell in the atmosphere, water, waste and other substances acting on people's olfactory thinking through the air medium. Malodorous gas refers to all gaseous substances that stimulate the olfactory organs, cause people's discomfort and damage the living environment. There are many kinds of malodorous gases. So far, there are more than 4,000 kinds of malodorous substances that can be sensed by people. In recent years, people's dissatisfaction and accusations against various abnormal odors have continued to increase. [0003] The collection of malodorous gases in the atmospheric environment is mostly carried out by on-site sampling in vacuum glass bottles, or in the form of infla...

AI Technical Summary

Problems solved by technology

[0007] However, the sampling personnel need to be near the sampling device all the time, waiting for the sampling opportunity. When the sampling personnel are exposed to the malodorous gas environment for a long time, the human body's own sense of smell sensitivity will decrease, and the identification and judgment of the odor will become insufficiently sensitive; the malodorous gas itself is Toxic and harmful gas, long-term inhalation by the human body can cause dizziness, nausea, and even other health hazards

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