Saving type He-3 gas filling system and method

Abstract

The invention relates to a saving type He-3 gas filling system and method. The system comprises a vacuum system, a gas supply system, a core system and a gas receiving system. The gas supply system isconnected with the input end of the core system, the gas receiving system is connected with the output end of the core system, and the gas supply system and the gas receiving system are isolated through a valve. Gas extraction equipment of the core system can extract gas of the low-gas-pressure input end to the high-gas-pressure output end, and a recovery tank can achieve recovery on remaining gas in a gas path after gas filling operation is finished. The vacuum system is used for vacuumizing system pipelines before gas filling operation. According to the saving type He-3 gas filling system and method, the gas filling time is short, gas filling is not influence by the volume of a gas tank, a detector cavity can be filled with gas in the gas tank according to the quantity, and the high-gas-pressure detector cavity can be filled with gas of the low-gas-pressure gas tank.

Description

Technical field [0001] The present invention relates to gas filling technology, in particular to an economical He-3 gas filling system and method. Background technique [0002] due to 3 He has a high nuclear reaction cross section with neutrons and is not sensitive to gamma. 3 He gas is widely used in neutron detection. It is used as a sensitive medium as the working gas of the detector and can be made into 3 He proportional counter tube, 3 He one-dimensional position sensitive detector and 3 He multi-wire proportional chamber and other types of neutron detectors. 3 He gas is tritium ( 3 H) a by-product, tritium will undergo beta decay into 3 He can be purified to meet application requirements 3 He gas. Tritium is an important raw material for the manufacture of hydrogen bombs. In industry, using the neutrons of the reactor and using lithium fluoride, lithium carbonate or lithium-magnesium alloy as the target material can produce tritium in large quantities. The United States an...

AI Technical Summary

Problems solved by technology

Although the system is ingeniously designed, its shortcomings are also obvious

One, only the gas in the gas cylinder can be fully charged into the gas to be filled. 3 And the counting tube can not accurately control the amount of inflation; second, when the volume of the gas storage cylinder is large, the piston of the booster pump has to reciprocate for a long time, which takes a long time and is easy to leak.

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