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Insulation structure for cold shield of fusion device

A technology of insulating structure and insulating sleeve, which is applied in fusion reactors, thermonuclear fusion reactors, nuclear reactors, etc., can solve the problems that the cold screen cannot meet the structural strength and deformation requirements, and the difficulty of processing, so as to facilitate modular design and facilitate installation and maintenance, reduce the effect of eddy current loss

Inactive Publication Date: 2019-07-23
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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Problems solved by technology

When analyzing the structure of the cold shield, it is found that due to the large size of the cold shield, if the cold shield is manufactured and assembled according to the traditional integral structure method, not only the processing is difficult, but also the cold shield is difficult to meet the complex requirements during the operation of the fusion device. Structural strength and deformation requirements under electromagnetic field and thermal environment

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  • Insulation structure for cold shield of fusion device
  • Insulation structure for cold shield of fusion device
  • Insulation structure for cold shield of fusion device

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Embodiment Construction

[0019] The present invention will be described in further detail below with reference to the accompanying drawings and examples.

[0020] The theoretical basis on which the present invention is based is as follows:

[0021] During the operation of the fusion device, eddy currents are generated on the cold shield due to changes in the electromagnetic field. Eddy current will not only increase the heat loss of the cold screen, but also cause the electromagnetic force of the cold screen. Since the thickness of the cooling panel of the cold shield is much smaller than the length and width, the eddy current caused by the change of the magnetic field Bt in the tangential direction can be ignored, and only the eddy current caused by the change of the normal magnetic field Bn (such as image 3 shown). Using the method of calculus, the eddy current loss power Pn of the cold screen panel, the electromagnetic force in the X direction and the electromagnetic force in the Y direction are...

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Abstract

The invention discloses an insulation structure for a cold shield of a fusion device. The insulation structure comprises cooling panels with flanging, fasteners for connecting the cooling panels, a thin insulation board for electrical insulation, an insulation sleeve and insulation gaskets; two adjacent cooling panels are connected through the fasteners and are isolated by the thin insulation board. By means of the structure, eddy-current loss of the cold shield is greatly reduced during operation of the fusion device, the heating condition of the cold shield is improved, and the cooling costis reduced; besides, the insulation structure can reduce electromagnetic force borne by the cold shield and has a certain protection effect on the cold shield structure. Due to insulation treatment ofthe cooling panels, modular design, processing and manufacturing of the cooling panels are better facilitated, and besides, mounting and maintenance are more convenient.

Description

technical field [0001] The invention relates to the field of fusion devices, in particular to an insulating structure for a cold shield of a fusion device. Background technique [0002] As one of the important components in the fusion device, the main function of the cold shield is to reduce the thermal load of the high-temperature components on the low-temperature superconducting magnet under the normal operation of the fusion device, so as to ensure that the superconducting magnet can work normally. In the analysis of the structure of the cold shield, it is found that due to the large size of the cold shield, if the cold shield is manufactured and assembled according to the traditional integral structure method, it is not only difficult to process, but also difficult to meet the complex requirements during the operation of the fusion device. Structural strength and deformation requirements under electromagnetic field and thermal environment. SUMMARY OF THE INVENTION [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21B1/13
CPCG21B1/13Y02E30/10
Inventor 葛剑倪小军周健白玉成宋云涛陆坤戎保
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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