System for detecting nanoparticles in environmental gas

Abstract

The invention relates to a system for detecting nanoparticles in environmental gas. The system comprises a gas sampling device, a particle detection device and a particle size amplification device, the particle size amplification device comprises a gas compression assembly for amplifying the particle size of the sample gas and a gas monitoring assembly for setting or monitoring state parameters ofthe sample gas before and after compression; the gas input end of the gas compression assembly is connected with the gas output end of the gas sampling device; the gas monitoring assembly sets a target state parameter of the sample gas; when the target state parameter is reached, the gas compression assembly is controlled to release the compressed sample gas; the invisible particles with the minimum diameter of 0.002 mu m in the sample gas are amplified into detectable small water drops with the diameter range of 10 mu m-20 mu m; the particle detection device is used for detecting the numberof small water drops and detecting environmental gas, rapid reaction in the harmful particle generation stage is achieved, the sensitivity is high, the false alarm rate is low, the application range is wide, and the detection process is not limited by environmental factors.

Description

technical field [0001] The invention relates to the technical field of environmental gas monitoring, and more specifically, to a nanoparticle detection system in environmental gas. Background technique [0002] In daily life, whether indoors or outdoors, there are a large number of compounds in the ambient gas. When these compounds reach the critical condition of chemical change, they will release invisible submicron harmful particles (about 0.002 μm in diameter). Invisible submicron particles grow rapidly and accumulate in the environment, transforming when their numbers reach a critical mass, causing accidents. [0003] The most common of these accidents is the creation of a fire. When a substance is heated to overheating, the material is decomposed due to chemical changes, and invisible submicron particles (about 0.002 μm in diameter) will be released. When the substance continues to be heated and reaches the ignition point, it will begin to transform into carbon particl...

AI Technical Summary

Problems solved by technology

[0005] However, the functions of the existing nanoparticle detectors are relatively single, and the above-mentioned capabilities cannot be realized at the same time, resulting in the inability of the nanoparticle detectors to respond in time to the generation of harmful particles in the ambient gas, resulting in accidents and damage to the property of the enterprise and the public. poses a serious threat to the personal safety of

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