Method for testing high-pressure gas purity

A purity inspection, high-pressure gas technology, used in the analysis of gas mixtures, using liquid/vacuum for liquid tightness measurement, and testing fluid tightness by detecting dimensional changes of the structural components to be tested. Pollution, quality lower than the index requirements and other problems, to achieve the effect of improving accuracy, reducing labor costs, and improving detection efficiency

Active Publication Date: 2018-10-16
贵州望江气体有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, in the process of storing gas in a high-pressure container, it is inevitable that some impurities will be mixed into the gas, causing pollution to the gas. The pollution in the high-pressure container includes penetration, adsorption and chemical action, etc., as well as the cleanliness and dryness of the interior of the high-pressure container. The degree will also have a direct impact on the quality and purity of the gas. After the gas is polluted, the purity of the gas will decrease, making its quality lower than the index requirements; So as to take timely measures to prevent the gas from being polluted again

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Embodiment Construction

[0029] The following is further described in detail through specific implementation methods:

[0030] The reference signs in the drawings of the description include: frame 1, lining 2, compression cylinder 3, motor 4, upper sealing cover 5, lower sealing cover 6, claw 7, air intake pipe 8, high-pressure container 9, arc Shaped airbag 10, curved plate 11, electric push rod 12, touch rod 13, reflective layer 14, infrared distance measuring sensor 15, touch switch 16, telescopic tube 17, pressure control valve 18, vacuum pump 19, air extraction pipe 20 , Gas purity detector 21.

[0031] Such as figure 1 and figure 2 As shown, the embodiment of the present invention uses a detection device, including a frame 1 and a liner 2 with upper and lower openings, and also includes:

[0032] The sealing mechanism includes a pressing cylinder 3 arranged on the top of the frame 1, and a motor 4 arranged at the bottom of the frame 1. The output end of the pressing cylinder 3 is fixedly con...

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Abstract

The invention discloses a method for testing high-pressure gas purity, and relates to the technical field of gas detection. The method comprises the following steps of: step of lining sealing, whereina lining is tightly arranged between an upper sealing cover and a lower sealing cover; step of gas feeding, wherein a pressure control valve is opened, the gas in a high-pressure container enters thesealed space formed by the lining, the upper sealing cover and the lower sealing cover through a gas inlet pipe; step of testing gas purity, wherein the gas in the sealed space is measured by the gaspurity detector on the lower sealing cover, and the measurement result is sent to a controller; step of lining multi-station testing, the output shaft of the motor is controlled by the controller todrive the lower sealing cover and the lining to synchronously rotate so as to realize multi-station detection of the lining. The testing method solves the problem that an existing gas purity testing method cannot simultaneously detect the gas purity and the gas tightness of the high-pressure container, and is mainly used for testing the high-purity gas in the high-pressure container.

Description

technical field [0001] The invention relates to the technical field of gas detection, in particular to a method for testing the purity of high-pressure gas. Background technique [0002] With the continuous development of modern industrial technology, high-tech fields such as microelectronics, aerospace, bioengineering, new materials, precision metallurgy, and environmental science require high-purity gases such as electronic-grade gases, special gases, and standard gases (purity above 99.99%) ) The demand is constantly increasing, and the requirements are also constantly increasing; at this stage, high-pressure containers are often used for filling, storing and transporting domestic storage of high-purity gases. This type of high-pressure vessel generally includes a metal shell and a liner. The liner is generally a metal thin-walled cylindrical shape of 2 to 3 mm. The liner is set in the metal shell and has an interference fit with the metal shell. The metal shell can ensur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M3/02G01M3/36G01N33/00
CPCG01M3/02G01M3/36G01N33/0004
Inventor 钟光岚
Owner 贵州望江气体有限公司
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