Conduction cooling superconducting magnet dewar convenient for loading and unloading

A superconducting magnet, conduction cooling technology, applied in gas/liquid distribution and storage, pressure vessels, fixed-capacity gas storage tanks, etc., can solve the problems of cumbersome operation, complex structure of superconducting magnets, high operating costs, and achieve a compact system , Equipment system optimization, simple maintenance and small heat leakage

Inactive Publication Date: 2008-11-19
INST OF PLASMA PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

Due to the use of cryogenic liquid for cooling, the structure of the superconducting magnet is relatively complicated, and the cryogenic liquid must be continuously replenished during operation, resulting in cumbersome operation and high operating costs

Method used

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  • Conduction cooling superconducting magnet dewar convenient for loading and unloading

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Embodiment Construction

[0032] Referring to Fig. 1, the conduction cooling superconducting magnet Dewar for easy loading and unloading includes a Dewar cylinder 4, the Dewar cylinder 4 is a hollow annular cylinder, the center of the annular cylinder is an eccentric room temperature hole 5, and the Dewar cylinder 4 A ring-shaped copper cold screen 13 is installed in the middle, and the upper end of the Dewar cylinder 4 is installed on the upper cover flange 2 with bolts 3, and the lower end is welded with the standard head 6. The flange 2 of the upper cover is provided with an interface 1 for installing a refrigerator. An epoxy glass reinforced plastic support rod 11 is installed between the upper cover flange 2 and the upper cover 12 . An epoxy fiberglass support rod 15 is housed between the Dewar cylinder body 4 and the superconducting magnet, and the epoxy fiberglass support rod 15 is used for position limiting when placed horizontally. There is a vacuum outlet 10 on the Dewar cylinder body 4 , an...

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Abstract

The invention relates to a conduction-cooled superconducting magnet Dewar with easy loading-unloading, comprising a Dewar cylinder. The conduction-cooled superconducting magnet Dewar is characterized in that the Dewar cylinder is a hollow annular cylinder, the middle of the annular cylinder is provided with a room temperature hole, an annular copper cold shield is arranged in the Dewar cylinder, a refrigerator and a superconducting magnet are arranged in the copper cold shield, a vacuum pumping port is arranged on the Dewar cylinder, a measuring device is arranged on an upper cover of the Dewar cylinder and the Dewar cylinder is in a vacuum state. Compared with the prior Dewar container, the conduction-cooled superconducting magnet Dewar is simpler, has small conduction heat leakage, and has the advantages of easy installation and disassembly; the refrigerator is used for conducting and cooling without a low temperature liquid (such as liquid helium and so on) cooling system; because of simple and safe system, a first-level cold junction of the refrigerator is operated under a temperature of 77K, thereby realizing heat sink of the copper cold shield, an electric lead and a support device; the first-level cold junction of the refrigerator adopts soft connection, thereby reducing temperature increment of the magnet due to vibration of the refrigerator; and the conduction-cooled superconducting magnet Dewar has the advantages of easy operation of manufacture, processing and installation, and is applicable to scale production.

Description

technical field [0001] The invention relates to a low-temperature Dewar container, which belongs to the field of low-temperature engineering and superconducting applications; in particular, a conduction-cooled superconducting magnet Dewar that is convenient for loading and unloading, and is used for conduction-cooling superconducting magnets to realize the acquisition and application of strong magnetic fields. . Background technique [0002] At present, among the low-temperature Dewar containers used in storage, transportation, and superconducting magnet experiments, most of them are traditional double-walled vacuum insulation containers that use cryogenic liquid evaporation to cool, and most of them are sealed by welding. There are certain disadvantages in handling, troubleshooting and maintenance. [0003] Conventional low-temperature superconducting magnets are cooled with cryogenic liquids. Due to the use of cryogenic liquid for cooling, the structure of the supercondu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F17C1/12
Inventor 王良斌周超许春雷宋云涛
Owner INST OF PLASMA PHYSICS CHINESE ACAD OF SCI
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