Gas calibration device of infrared gas detector

Abstract

The invention discloses a gas calibration device of an infrared gas detector. The device comprises a calibration cylinder body. A gas inlet, a gas outlet, a front calibration window and a back calibration window are all arranged on the calibration cylinder body. The device also includes a gas inlet rotating plug and a gas outlet rotating plug. The front calibration window and the back calibration window are respectively fixedly disposed on the two ends of the calibration cylinder body. The gas inlet and the gas outlet are disposed on the calibration cylinder body. When the calibration cylinder body is fully filled with a calibrated gas, the calibration cylinder body is sealed by the rotating plugs. When calibration is carried out through the infrared gas detector, the calibration cylinder body is fixed in a detection light path of the infrared gas detector when gas needs to be fed for simulating a feeding process of the calibrated gas to complete gas calibration. The gas calibration device can solve a problem that the gas is continuously fed into a calibration light path during the gas calibration with the infrared gas detector and the gas is diffused into air. The gas calibration device allows air pollution to be reduced and meanwhile can be used repeatedly so that cost of the gas calibration is effectively saved.

Description

technical field [0001] The invention relates to a gas calibration device, in particular to a gas calibration device for an infrared gas detector. Background technique [0002] At present, in petroleum, chemical and other industries, for the safety of production, gas leakage detection instruments are installed. Some of these detection instruments use infrared gas detectors, such as detecting alkanes and olefins, and infrared gas detectors detection equipment. Infrared gas detector uses infrared principle to detect gas concentration, mainly infrared absorption type, and the core component is infrared sensor. Infrared sensor uses different gases to absorb infrared waves to different degrees, and detects gas by measuring infrared absorption wavelength. It has good anti-poisoning. Sensitive response, strong gas pertinence, long service life, strong environmental adaptability, but complex structure, stable and reliable. [0003] However, during the gas calibration of infrared ga...

AI Technical Summary

Problems solved by technology

Infrared gas detector uses infrared principle to detect gas concentration, mainly infrared absorption type, the core component is infrared sensor, infrared sensor uses different gases to absorb infrared waves to different degrees, and detects gas by measuring infrared absorption wavelength, which has good anti-poisoning. Sensitive response, strong gas pertinence, long service life, strong environmental adaptability, but complex structure, stable and reliable

[0003] However, during the gas calibration of infrared gas detectors, it is necessary to continuously inject gas into the calibration optical path and diffuse it into the air, wasting the calibration gas and causing air pollution.

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