Helium circulation, purification and storage system

Abstract

The invention discloses a helium circulation, purification and storage system. The helium circulation, purification and storage system comprises a pressure gas bottle, a gas extraction pump, an oil filtration filter, a low temperature filter and a hydrogen adsorption device; the pressure gas bottle is used for injecting helium gas into the system; the gas extraction pump is in series connection with an output end of the pressure gas bottle; the oil filtration filter is in series connection with an output end of the gas extraction pump; the low temperature filter is in series connection with an output end of the oil filtration filter; the hydrogen adsorption device is in series connection with an output end of the low temperature filter; an output end of the hydrogen adsorption device is input into a cryostat through a gas conveying pipeline, wherein the helium gas is to be supplied by the cryostat; the helium circulation, purification and storage system also comprises a gas storage tank which is used for recycling the helium gas in the system when the cryostat stops working; a gas outlet of the gas storage tank is connected with an input end of the gas extraction pump; a gas inlet of the gas storage tank is connected between the oil filtration filter and the low temperature filter. According to the helium circulation, purification and storage system, the structure is simple; the helium gas conveyed into the cryostat is high in purity and good in cooling effect; the helium gas can be recycled through the gas storage tank and accordingly the utilization rate of the helium gas is improved.

Description

technical field

[0001] The invention relates to a helium circulation, purification and storage system. Background technique

[0002] Helium is colorless, tasteless, and odorless, and is a gaseous inert gas at room temperature. As the special gas with the lowest boiling point among known substances, helium is often used in ultra-low temperature technology, gas thermometers, gas lasers, and spectroscopic research and special production of helium because its critical point is quite low and it is the closest to an ideal gas. industry.

[0003] In scientific research projects, the existing cryostats use helium for cooling, but the existing helium cooling system has the following problems. After heat exchange, it is directly discharged into the atmosphere and cannot be recycled, resulting in high cooling costs. Impurities that may exist in the middle pipeline will enter the cryogenic refrigeration system with the helium, resulting in a reduction in cooling effect. Contents of ...

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