Gas detection method and apparatus

A gas detection and gas technology, applied in the field of portable infrared gas detection detection methods and equipment, can solve the problems of uncertain diffusion channels and diffusion ranges, false positives and false alarms

Inactive Publication Date: 2016-08-03
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
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Problems solved by technology

Due to the strong specificity of this type of sensor, it is only suitable for one or a certain type of substance, and does not generate a response signal for other leakage sources, so the versatility is poor
In addition, due to the limitation of external power supply and signal output mode, such sensors generally need to be fixed at a certain position of the production device, but due to the ...

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  • Gas detection method and apparatus

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Embodiment Construction

[0059] Hereinafter, a preferred embodiment according to the present invention will be described. It should be emphasized that although for the sake of convenience, the mixed gas detection of methane, ethane and propane is used as an example for illustration below, those skilled in the art can understand that the gas infrared detection device device according to the present invention can also be used For detecting other types of gases, including but not limited to gases with toxic, flammable or explosive properties.

[0060] figure 1A schematic diagram of the working principle of the infrared detection device according to the present invention is shown. As shown in the figure, the operator places the sampling tube 10 in the leakage area, and the sampling tube can be filled with GDX-104 packed column, and the gas mixture containing the leaked gas enters the detection chamber 11 from the sampling tube 10, and is detected by the infrared laser assembly 2. Continuously irradiatin...

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Abstract

The invention relates to a gas detection method. The gas detection method comprises the following steps: B) irradiating to-be-detected gas with infrared light so as to obtain infrared reflected light obtained after reflection of the infrared light by the to-be-detected gas; C) converting the infrared reflected light into a characteristic signal of the infrared reflected light; D) comparing the characteristic signal of the infrared reflected light with standard signals to standard gas under the condition of two grades of standard concentrations so as to determine whether the to-be-detected gas contains gas varieties in the standard gas or not, wherein if the to-be-detected gas contains at least one gas variety in the standard gas, the concentration of the gas variety, in the to-be-detected gas, identical to the gas variety the standard gas; and E) visually outputting the determined gas variety in the to-be-detected gas and the concentration thereof. The invention also relates to a gas detection apparatus using the method.

Description

[0001] The present invention claims the priority of the Chinese patent application number "201510033084.3" submitted on January 22, 2015, and the patent application titled "a gas detector and its use method". technical field [0002] The invention relates to a gas detection method and gas detection equipment, in particular to a portable infrared gas detection method and equipment that can be used for leakage detection of various inflammable, explosive and toxic gases. Background technique [0003] Most of the raw materials, intermediate products, and products used in the chemical production process are flammable, explosive, toxic and harmful substances. In order to avoid harm to the human body and the environment, these flammable, explosive, toxic and hazardous substances are generally converted from raw materials to products in closed containers, reactors and other equipment. In addition, from one operation unit to another operation The transportation of various gas, liquid...

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Application Information

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IPC IPC(8): G01N21/39
Inventor 梁汝军王金秋刘蓉孙瀚宇崔秉全
Owner CHINA PETROLEUM & CHEM CORP
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