Superfluid helium low-temperature cycle system

A circulation system and low-temperature technology, applied in the field of superfluid helium cryogenic circulation system, to achieve compact size, reduce technical risk and improve reliability

Active Publication Date: 2018-05-15
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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Problems solved by technology

Therefore, the superfluid helium circulation method needs to be redesigned

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Embodiment Construction

[0019] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0020] Such as Figure 1-2 As shown, a superfluid helium cryogenic circulation system 100 includes a compressor unit 110, a helium liquefaction unit 130, a first storage tank 140, a second storage tank 150, and a superfluid helium circulation unit 160;

[0021] The compressor unit 110 includes a high-pressure compressor 112 and a low-pressure compressor 111, the outlet of the low-pressure compressor 111 is connected to the inlet of the high-pressure compressor 112; the outlet of the high-pressure compressor 112 is connected to the helium liquefaction The first air inlet of the unit 130 communicat...

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Abstract

The invention relates to the technical field of low-temperature refrigeration, in particular to a superfluid helium low-temperature cycle system comprising a compressor unit, a helium liquefaction unit, a first storage tank, a second storage tank and a superfluid helium cycle unit. The ejector-based superfluid helium cycle system is designed, thus a mechanical moving part is omitted for existing superfluid helium cycle, design difficulties of these mechanical moving parts are avoided, the requirement of long-term maintenance-free operation of the low-temperature cycle system is met, meanwhile,reliability of cycle operation is improved, technical risk is lowered, and the size of the whole low-temperature cycle system is kept more compact.

Description

technical field [0001] The invention relates to the technical field of low-temperature refrigeration, in particular to a superfluid helium low-temperature circulation system. Background technique [0002] Superfluid helium (He II) has unique superfluidity and is a cooling medium with very good cooling performance. Both use superfluid helium for cooling. The research and application of superfluid helium has developed along with the development of advanced technologies such as low-temperature superconductivity, space exploration and high-energy physics. The conventional method of obtaining superfluid helium is to reduce the pressure in the liquid helium space to an absolute pressure of 1.6kPa, so that the temperature of superfluid helium reaches 1.8K. Therefore, the cycle of obtaining superfluid helium is a negative pressure cycle, which requires related vacuum equipment to keep the pressure of superfluid helium constant. At present, the mainstream method in the world is to...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B9/08
CPCF25B9/08
Inventor 龚领会王炳明胡忠军李正宇
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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