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Shielding gas sampler and sampling method

A sampling device and protective gas technology, applied in the direction of sampling devices, sampling, measuring devices, etc., to avoid explosions and improve safety

Pending Publication Date: 2018-04-17
李进
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among other known methods and devices for sampling flammable and explosive gases, there are varying degrees of shortcomings in terms of safety, reliability, and accuracy.

Method used

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  • Shielding gas sampler and sampling method
  • Shielding gas sampler and sampling method
  • Shielding gas sampler and sampling method

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Embodiment Construction

[0034] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0035] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, ...

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Abstract

The invention relates to the field of flammable and explosive gas sampling, and in particular to a shielding gas sampler and a sampling method. The shielding gas sampler comprises a cylinder, a piston, a guide rod, and end caps; the piston is slidably arranged in the cylinder, and the guide rod is fixedly arranged at one end of the piston; the end caps are fixedly arranged at both ends of the cylinder, and are used for sealing the interior of the cylinder; the interior of the piston is provided with a cavity, and the interior of the guide rod is provided with an air duct communicating with thecavity; and the cavity is filled with compressed air. According to the shielding gas sampler and the sampling method provided by the invention, since the interior of the piston is provided with the cavity and the cavity is filled with the compressed air, the compressed air is utilized to divide the cavities of the upper end and lower end of the piston, consequently, gases in the two cavities areprevented from being mixed, so that the situation that flammable and explosive gases are in contact to explode is prevented, and thereby the safety, the reliability, the operability and the precisionin the process of flammable and explosive gas sampling are increased.

Description

technical field [0001] The invention relates to the field of flammable and explosive gas sampling, in particular to a protective gas sampling device and a sampling method. Background technique [0002] In the process of sampling flammable and explosive gases, in order to prevent direct or indirect contact between flammable and explosive gases and oxygen components in the air and other pollutant gases that are easy to contaminate sample gases, special measures are usually required for treatment. [0003] For example, in the process of natural gas sampling, a special sealed gas storage tank is used as a gas sample gas storage device, and sealed water is used as an isolation medium to isolate natural gas from air and other components that are easy to pollute the sample gas, such as nitrogen and oxygen. [0004] However, the above-mentioned method and sampling device have the disadvantages of huge equipment and inconvenient control of the sampling pressure. In other known metho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/24G01N1/22
CPCG01N1/2226G01N1/24G01N2001/2238
Inventor 李进
Owner 李进
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