Helium recovery device and method for leakage detection of high-pressure gas cylinder

A high-pressure gas cylinder and helium gas recovery technology, which can be used in measuring devices, detecting the appearance of fluid at leakage points, testing fluid tightness, etc., can solve problems such as weak resolution, high false alarm rate, and low detection sensitivity , to achieve the effect of preventing damage and avoiding waste

Active Publication Date: 2020-05-12
LANZHOU INST OF PHYSICS CHINESE ACADEMY OF SPACE TECH
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Problems solved by technology

[0002] In the field of satellite propellant leakage detection technology, it is necessary to solve technical problems such as low detection sensitivity, weak resolution ability, and high false alarm rate through technical research and detection practice

Method used

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  • Helium recovery device and method for leakage detection of high-pressure gas cylinder
  • Helium recovery device and method for leakage detection of high-pressure gas cylinder
  • Helium recovery device and method for leakage detection of high-pressure gas cylinder

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Embodiment Construction

[0025] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0026] like figure 1 Shown, a kind of helium recovery device that is used for leak detection of high-pressure gas cylinder of the present invention is made of high-pressure gas cylinder (1), temperature measuring sensor (2,7), vacuum gauge (3,8), pressure relief controller (4), high-pressure cut-off valves (5, 9, 16, 19), gas storage container (6), fine-tuning valve (10), cold cathode ionization vacuum gauge (11), mass spectrometry chamber (12), mass spectrometer ( 13), a high vacuum pump (14), a low vacuum pump (15, 18), a low vacuum valve (17), a high-purity nitrogen source (20) and pipelines. Schematic see figure 1 , the high-pressure gas cylinder (1) is used as a recovery source, and it is a product to be inspected with a certain pressure. The working pressure is generally (10-60) MPa; The temperature of the container surface; the vacuum gauge (3, 8...

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Abstract

The invention discloses a helium recovery device and method for the leakage detection of a high-pressure gas cylinder. The helium recovery device comprises a gas storage container, a temperature and pressure monitoring unit, a measuring instrument, a replacement system, a pressure relief controller and a vacuumizing unit; the gas storage container is used for storing helium recovered from a detected high-pressure gas cylinder; the temperature and pressure monitoring unit is used for monitoring the temperature and pressure of the high-pressure gas cylinder and the gas storage container in a recycling process; the measuring instrument is used for measuring the concentration of the recycled helium in the gas storage container; the replacement system is used for replacing air in the gas storage container before helium recovery to ensure the purity of the recovered helium; the pressure relief controller is used for adjusting the rate of the relief of pressure from the high-pressure gas cylinder to the gas storage container; and the vacuumizing unit is used for vacuumizing the gas storage container. The helium recovery device can recover helium after the leakage detection of the high-pressure gas cylinder is completed, meanwhile, it is guaranteed that the recovered helium has certain purity, and the use requirement of next leakage detection can be met.

Description

technical field [0001] The invention belongs to the technical field of helium recovery devices, and in particular relates to a helium recovery device and a recovery method for leak detection of high-pressure gas cylinders. Background technique [0002] In the technical field of satellite propellant leakage detection, it is necessary to solve technical problems such as low detection sensitivity, weak resolution and high false alarm rate through technical research and detection practice. The shape of the high-pressure gas cylinders used in the leak detection process includes spherical, cylindrical and ring-shaped, the volume ranges from a minimum of 2L to a maximum of 670L, and the burst pressure is as high as 150MPa. For the leak rate detection of high-pressure gas cylinder products, the annual helium consumption is 200 bottles For the above, it is urgent to develop a helium recovery device for leak detection of high-pressure gas cylinders, which can greatly reduce the detect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M3/20G01M3/22G01N27/62
CPCG01M3/205G01M3/202G01N27/62G01M3/226G01M3/22
Inventor 丁栋赵澜孙雯君陈联张瑞芳管保国孙冬花
Owner LANZHOU INST OF PHYSICS CHINESE ACADEMY OF SPACE TECH
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