Small-size gas collecting device

A gas collection, small-volume technology, applied in the direction of sampling devices, etc., can solve the problems of inability to observe the state of gas samples, unsuitable sampling devices, etc., achieve the effects of small space occupation, easy operation, and improved utilization

Active Publication Date: 2013-01-16
INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

The sampling tank can realize the sampling of positive pressure gas and negative pressure gas after pre-evacuation, but the state of the collected gas samples cannot be observed during the sampling process
The gas collected in the sampling tank can be directly used for gas chromatograph injection analysis, but it cannot be directly used for solid phase microextraction-gas phase / mass spectrometry analysis. When the content of organic components in the gas sample is lower than that detected by gas phase / mass spectrometry When it is necessary to use solid-phase microextraction to enrich and concentrate the sample for analysis, such a sampling device is not applicable

Method used

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Embodiment Construction

[0021] The present invention will be further elaborated below in conjunction with the accompanying drawings.

[0022] Such as figure 1 as shown, figure 1 A schematic diagram of the overall structure of an embodiment of the present invention is shown. Such as figure 1 As shown, this embodiment is a small-volume gas collection device, including a gas circuit system and a circuit system; the gas circuit system includes a sample collection container 1, and the sample collection container can be a sampling bag or a sampling tank, as a preferred embodiment , the sample collection container 1 of this embodiment is a sampling tank. The sampling tank can be used to collect high pressure, normal pressure and negative pressure gas samples. The capacity range of the sampling tank is 5 milliliters to 20 milliliters, wherein the capacity of the sampling tank is 5 milliliters or 10 milliliters, or 15 milliliters, or 20 milliliters, which is preferred. As a more preferred embodiment, the...

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Abstract

The invention discloses a small-size gas collecting device. The device comprises a gas circuit system and an electric circuit system, wherein the gas circuit system comprises a sample collecting container, a connecting device and an air exhaust device; the air exhaust device is connected with the sample collecting container through the connecting device; the electric circuit system comprises a pressure sensor used for measuring the pressure in the gas circuit system, a data acquisition device and a data processing device. According to the small-size gas collecting device, the electric circuit system is arranged for monitoring the gas pressure in the sampling device in real time; and moreover, the good connection between the gas circuit system and various gas analysis technologies is realized through joints in multiple forms, a sampling tank serves as a container for a gas sample and is used for small-size sampling of positive-pressure or negative-pressure gas, and the collected gas sample can be used for gas chromatography and solid phase microextraction, gas chromatography / mass spectrometry combined analysis.

Description

technical field [0001] The invention relates to a sampling device, in particular to a sampling device for collecting gas, especially a small-volume gas sampling device with a collection volume within 20 milliliters. Background technique [0002] Gas analysis is a method of analyzing the composition and content of gaseous substances at room temperature and normal pressure. It has a very wide range of applications in petrochemical, gas manufacturing, environmental monitoring, medicine and health, and military affairs. Gas sampling devices play a pivotal role in the process of sampling, storing and analyzing gas samples. At present, the devices used for gas sampling in the prior art mainly include various commercial sampling bags and sampling tanks. The sampling bag can be used for sampling positive pressure gas samples whose pressure is higher than atmospheric pressure, but cannot be sampled for negative pressure gas objects whose pressure is lower than atmospheric pressure. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/22
Inventor 余堃王新锋王晓川彭强罗毅坚余凤湄李哲
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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