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Self-absorption type gas sampling bag and application thereof

An air-collecting bag and self-priming technology, which is applied to sampling, measuring devices, instruments, etc., can solve the problem of difficulty in automatically collecting alkane compounds in the sampling bag, and achieve the effects of not easy air leakage, simple operation and good technical effect.

Inactive Publication Date: 2019-11-15
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] One of the technical problems to be solved by the present invention is the problem that the sampling bags of the prior art are difficult to automatically collect alkane compounds with a lower boiling point in the air of the workplace. A new self-priming gas collection bag is provided, which can automatically Advantages of collecting lower boiling alkanes from workplace air

Method used

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  • Self-absorption type gas sampling bag and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A gas extraction bag based on self-priming, such as figure 1 As shown, including the inner layer of the sampling bag, the outer layer of the sampling bag and the valve, the inner layer of the sampling bag is made of aluminum foil, the outer layer of the sampling bag is made of latex, and the material of the valve is polytetrafluoroethylene; the inner layer of the sampling bag and the outer layer of the sampling bag The thickness ratio of the layers is 0.1:1.

[0022] The inner layer of the sampling bag includes 2 layers of aluminum foil. The outer material of the sampling bag is latex, which has plasticity, can be deformed and squeezed. The material of the valve is polytetrafluoroethylene, which has a self-sealing structure. According to the plasticity and automatic restoration of the latex material, when the sampling gas is automatically filled, if it is not squeezed, the sealing effect can be achieved for a certain period of time. The valve is connected with the vac...

Embodiment 2

[0025] A gas extraction bag based on self-priming, such as figure 1 As shown, including the inner layer of the sampling bag, the outer layer of the sampling bag and the valve, the inner layer of the sampling bag is made of aluminum foil, the outer layer of the sampling bag is made of latex, and the material of the valve is polytetrafluoroethylene; the inner layer of the sampling bag and the outer layer of the sampling bag The layer thickness ratio is 0.15:1.

[0026] The inner layer of the sampling bag includes 2 layers of aluminum foil. The outer material of the sampling bag is latex, which has plasticity, can be deformed and squeezed. The material of the valve is polytetrafluoroethylene, which has a self-sealing structure. The valve is connected with the vacuum pump, and the vacuum is maintained through the valve seal after vacuuming. The shape of the sampling bag is square. The valve is a regulating valve, which can adjust the flow rate of the sample into the sampling ba...

Embodiment 3

[0029] A gas extraction bag based on self-priming, such as figure 1 As shown, including the inner layer of the sampling bag, the outer layer of the sampling bag and the valve, the inner layer of the sampling bag is made of aluminum foil, the outer layer of the sampling bag is made of latex, and the material of the valve is polytetrafluoroethylene; the inner layer of the sampling bag and the outer layer of the sampling bag The thickness ratio of the layers is 0.2:1.

[0030] The inner layer of the sampling bag includes 2 layers of aluminum foil. The outer material of the sampling bag is latex, which has plasticity, can be deformed and squeezed. The material of the valve is polytetrafluoroethylene, which has a self-sealing structure. The valve is connected with the vacuum pump, and the vacuum is maintained through the valve seal after vacuuming. The shape of the sampling bag is square. The valve is a regulating valve, which can adjust the flow rate of the sample into the samp...

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Abstract

The invention relates to a self-absorption type gas sampling bag and application thereof, and mainly solves the problem that a gas sampling bag in the prior art is hard to sample alkane type compoundswith relatively low boiling point from the air of a work place. The self-absorption type gas sampling bag comprises an inner layer of the gas sampling bag, an outer layer of the gas sampling bag anda valve; the inner layer is made of an aluminum foil, an outer layer is made of emulsion, and the valve is made of polytetrafluoroethylene; and the thickness of the inner layer to that of the outer layer is 0.1-0.2:1. The above problem can be solved effectively, and the gas sampling bag can be applied to gas sampling.

Description

technical field [0001] The invention relates to a self-priming air collection bag and its application. Background technique [0002] Sampling and analysis of alkane compounds with low boiling point (-161.7~40℃) in the workplace air is an important way to assess the level of exposure of workers to harmful factors. The sampling method directly affects the accuracy of the test results and also affects the Convenience for sampling personnel to operate. [0003] At present, alkanes with low boiling points in the air of the workplace cannot be sampled through conventional activated carbon tubes, and the sampling is mainly carried out by ordinary gas sampling bags and air samplers [Rong Weifeng, Wu Chuan, Ling Weijie. Methane, propane, butane in the air of the workplace Determination of alkane or isobutane by direct sampling gas chromatography [A]. Proceedings of the 2011 National Occupational Disease Academic Exchange Conference of the Chinese Preventive Medicine Association [C];...

Claims

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Application Information

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IPC IPC(8): G01N1/24
CPCG01N1/24G01N2001/248
Inventor 郭强之于金宁张昌运
Owner CHINA PETROLEUM & CHEM CORP
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