Freely-detachable gold wire sealing connection device for superfluid helium temperature zone and implementation method

A connecting device, a detachable technology

Active Publication Date: 2021-06-11
SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Superfluid helium working fluid has many specific properties different from conventional fluids, such as extremely low temperature, extremely low density, non-viscosity, etc., which poses a great challenge to the structure and materials of cryogenic seals. cannot meet the requirement

Method used

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  • Freely-detachable gold wire sealing connection device for superfluid helium temperature zone and implementation method
  • Freely-detachable gold wire sealing connection device for superfluid helium temperature zone and implementation method
  • Freely-detachable gold wire sealing connection device for superfluid helium temperature zone and implementation method

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Experimental program
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Embodiment Construction

[0022] Below in conjunction with accompanying drawing and embodiment the specific embodiment of the present invention is described in further detail:

[0023] figure 2 It is a cross-sectional view of the inventive detachable superfluid helium temperature zone gold wire sealing connection device coupled with the inlet pipe 1 and the outlet pipe 11; including

[0024] image 3 It is a sectional view of the sealing connection base 3;

[0025] Figure 4 It is a sectional view of the sealing connection screw rod 9;

[0026] Figure 5 It is a sectional view of the sealing connection nut 4;

[0027] Figure 6 It is a three-dimensional view of the gold wire sealing ring 6.

[0028] figure 2 It is a cross-sectional view of the inventive straight-through slit precooling heat exchanger coupled with the inlet pipe 1 and the outlet pipe 13, including a sealing connection base 3, a sealing connection nut 4, a gold wire sealing ring 6 and a sealing connection screw 9.

[0029] i...

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Abstract

The invention discloses a freely-detachable gold wire sealing connection device for a superfluid helium temperature zone and an implementation method. The freely-detachable gold wire sealing connection device is composed of a sealing connection base, a sealing connection nut, a gold wire sealing ring and a sealing connection screw. The sealing of a fluid working medium in the superfluid helium temperature zone is realized in a gold wire sealing manner, and a gas inlet pipe and a gas outlet pipe can be freely separated by designing three independent components, namely the base, the nut and the screw, so that the mounting and dismounting of a low-temperature fluid pipeline are greatly simplified, and the device and the implementation method have very positive significance in application of a low-temperature throttling refrigerating machine working in the superfluid helium temperature zone in the special fields of aerospace and the like.

Description

technical field [0001] The invention belongs to the field of refrigeration and low-temperature engineering, relates to a superfluid helium low-temperature throttling refrigerator, in particular to a free detachable gold wire sealing connection device in a superfluid helium temperature zone and a realization method. Background technique [0002] The low-temperature throttling refrigerator is a refrigerator that obtains low temperature by using the pressure-reducing and temperature-reducing effect produced by the throttling of the refrigerant. The low-temperature throttling refrigerator in the superfluid helium temperature zone adopts a multi-stage regenerative refrigerator (such as a two-stage GM refrigerator or a multi-stage pulse tube refrigerator) for pre-cooling, and uses helium-4 as the working fluid, which can obtain The temperature in the superfluid helium temperature zone (2.17K) or below; the low temperature end of the superfluid helium low-temperature throttling ref...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L19/02F16L13/02F25B9/14
CPCF16L19/0206F16L19/0218F16L19/0231F16L13/02F25B9/145
Inventor 党海政张涛
Owner SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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