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Capillary throttling structure for liquid helium temperature zone

A capillary, temperature zone technology, applied in refrigeration and liquefaction, fluid circulation arrangement, mechanical equipment, etc., can solve the problems of poor throttling effect, affecting the throttling refrigeration effect, and reducing the pressure drop at both ends of the capillary, so as to achieve assembly Convenient, export-smooth finish

Pending Publication Date: 2019-04-02
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

[0012] However, due to machining accuracy, the inner diameter of the tiny capillary can only reach 0
If the throttle opening is too large, the throttling effect will be worse, and the pressure drop at both ends of the capillary will be smaller, which will affect the throttling cooling effect.

Method used

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  • Capillary throttling structure for liquid helium temperature zone
  • Capillary throttling structure for liquid helium temperature zone
  • Capillary throttling structure for liquid helium temperature zone

Examples

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Embodiment Construction

[0050] The technical solutions of the embodiments of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0051]The capillary throttling structure system in the liquid helium temperature zone of the present invention consists of three parts. The first part is a semicircular cover plate, including a first semicircular cover plate 3, a second semicircular cover plate 4, a third semicircular cover plate 5 and a second semicircular cover plate. Four semi-circular cover plates 6; the second part is a retractable bellows 7; the third part is a capillary unit, including a first two-way joint 1, a second two-way joint 2 and a capillary 25.

[0052] The first semicircular cover plate 3, the second semicircular cover plate 4, the third semicircular cover plate 5 and the fourth semicircular cover plate of the first part of the liquid helium temperature zone capillary throttling structure system are consistent in st...

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PUM

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Abstract

The invention discloses a capillary throttling structure for a liquid helium temperature zone, which comprises semi-circular cover plates, a retractable bellows and a capillary structure. The semi-circular cover plates can be combined in any two, and are fixed on the retractable bellows through clamping grooves; and the semi-circular cover plates can be rotated. The retractable bellows adjusts thedegree of expansion and contraction of the bellows by means of bolts fixed to the flange face. The capillary is coiled and placed in the retractable bellows, and the inlet and the outlet of the capillary extend out of small holes in the side wall surfaces of the semi-circular cover plates. The capillary throttling structure for the liquid helium temperature zone has the advantages of simple structure, compactness, high reliability, low blockage possibility of throttling components, and easy processing.

Description

technical field [0001] The invention relates to the field of throttling refrigeration in a liquid helium temperature zone, in particular to a capillary throttling structure. Background technique [0002] With the development of space technology, future space exploration projects will use deep space detectors such as quantum superconducting interference devices (SQUID), space infrared detection, millimeter wave and submillimeter wave detection, and cosmic background detection. At the same time, the demand for extremely low temperatures in the liquid helium temperature region or even the millikelvin (mK) temperature region is also proposed for its space refrigeration system. Developed countries such as Europe, America and Japan have proposed a variety of solutions for the needs of space liquid helium temperature zones, such as liquid helium thermostats, multi-stage pulse tube refrigerators, J-T throttling refrigerators in liquid helium temperature zones, adsorption refrigerato...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B41/06F25B41/37
CPCF25B41/37
Inventor 刘少帅吴亦农向振之蒋珍华汤逸豪刘莉
Owner SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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