Air detection system and detection method

A technology of air detection and air, which is applied in the direction of measuring devices, instruments, scientific instruments, etc., and can solve the problems of high cost and easy abnormal sensor sensitivity

Inactive Publication Date: 2019-11-08
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Existing air detection equipment detects gas concentration through sensors, and the detection accuracy depends on the ability of the sensor. The sensitivity of the sensor is prone to abnormality, and there are certain risks in the detection. In addition, multiple sensors need to be installed for various substances, and the cost is relatively high.

Method used

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Embodiment 1

[0036] Please refer to figure 1 , the present embodiment provides an air detection system and detection method for detecting the concentration of harmful substances in the air, the air detection system includes a supercharger 10, a temperature control 20, and a conductivity test piece 30, and the supercharger 10 includes The booster chamber 11 and the piston mechanism 12, the temperature sensor 50, the pressure sensor 40 and the fan 60 are arranged inside the booster chamber 11, the booster chamber 11 is provided with an air inlet 111, an air outlet 112 and a temperature control port 113, and the air inlet 111 is provided with The air inlet solenoid valve, the air outlet 112 is provided with an air outlet solenoid valve, the temperature control port 113 is provided with a temperature control solenoid valve, and the piston mechanism 12 includes a piston 121 and a telescopic rod 122 .

[0037] Such as figure 1 As shown, the piston 121 slides up and down in the pressurization ch...

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PUM

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Abstract

The invention relates to the technical field of environmental detection, in particular to an air detection system and detection method. The air detection system comprises: a supercharger provided witha supercharging cavity for accommodating and compressing air to be detected, so that a pressure applied to an object to be detected in the air to be detected is a critical pressure; a temperature control component connected with the supercharging cavity and configured to adjust the temperature in the supercharging cavity to a critical temperature of the object to be detected; and a conductivity test piece disposed in the supercharging cavity and configured to test the conductivity of the object to be detected at the critical temperature and the critical pressure. The concentration of harmfulobjects in the air is accurately measured by using the principle that a critical state gas-liquid two-phase change causes a change in the conductivity, and meanwhile, the pressure and the temperaturecan be adjusted for different objects to be detected to achieve the purpose of detecting the concentration of various pollutants in the air.

Description

technical field [0001] The invention relates to the technical field of environmental detection, in particular to an air detection system and detection method. Background technique [0002] Existing air detection equipment detects gas concentration through sensors, and the detection accuracy depends on the ability of the sensor. The sensitivity of the sensor is prone to abnormality, and there are certain risks in the detection. In addition, multiple sensors need to be installed for various substances, and the cost is relatively high. Contents of the invention [0003] The purpose of the present invention is to provide an air detection system and detection method, which uses the linear relationship between conductivity and concentration under the critical condition of the gas to measure the conductivity of the substance to be detected in the pressurized chamber under the critical condition, and accurately measure the concentration of pollutants. concentration. [0004] Embo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/04G01N33/00
CPCG01N27/04G01N33/0036
Inventor 王堃常鲁楠罗汉兵肖利容肖德玲
Owner GREE ELECTRIC APPLIANCES INC
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