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Horizontal Dewar high-temperature superconducting current lead structure and design method

A high-temperature superconducting and current lead technology, applied in superconducting magnets/coils, circuits, electrical components, etc., to achieve the effects of easy installation and maintenance, superior heat dissipation, and favorable engineering promotion and application

Active Publication Date: 2022-05-13
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, on the basis of a given material, there is no current lead structure and design method that can minimize the heat leakage of the lead by changing the size of the current lead

Method used

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  • Horizontal Dewar high-temperature superconducting current lead structure and design method
  • Horizontal Dewar high-temperature superconducting current lead structure and design method
  • Horizontal Dewar high-temperature superconducting current lead structure and design method

Examples

Experimental program
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Effect test

Embodiment 1

[0077] refer to Figure 1-11 , a horizontal Dewar high temperature superconducting current lead structure, used for coaxial horizontal transformers, the horizontal Dewar high temperature superconducting current lead structure includes:

[0078] Dewar end cap 1 installed on the transformer;

[0079] A high-voltage lead wire segment 2 and a low-voltage lead wire segment 3 are installed on the Dewar end cover 1;

[0080] The first end of the high-voltage lead section 2 is connected to the transformer through the first high-voltage and low-voltage lead 4, and the second end of the high-voltage lead section 2 is connected to the first high-temperature superconducting lead section 5, which is placed in liquid nitrogen in liquid nitrogen in the cooler;

[0081] The first end of the low-voltage lead section 3 is connected to the transformer through the second high-voltage and low-voltage lead wire, the second end of the low-voltage lead section 3 is connected to the second high-temp...

Embodiment 2

[0089] This embodiment is a design method for the horizontal Dewar high temperature superconducting current lead structure provided in Embodiment 1, including the following steps:

[0090] S10, determining the length of the Dewar high voltage lead wire and the Dewar low voltage lead wire;

[0091] S20. Measure the outer diameter of the Dewar high-voltage lead wire and the Dewar low-voltage lead wire, and then determine the inner diameter of the Dewar high-voltage lead wire and the Dewar low-voltage lead wire according to the known rated current; meanwhile, optimize the radius of the Dewar high-voltage lead wire and the Dewar low-voltage lead wire and length to get the optimal aspect ratio to achieve minimum heat leakage.

[0092] In the present embodiment, in step S20, the radius and length of the Dewar high-voltage lead wire and the Dewar low-voltage lead wire are optimized to obtain the optimal aspect ratio. The specific steps are as follows:

[0093] S21. According to the ...

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Abstract

The invention discloses a horizontal Dewar high-temperature superconducting current lead structure and a design method, and belongs to the technical field of superconducting power application. The horizontal Dewar high-temperature superconducting current lead structure comprises a Dewar end cover mounted on a transformer; a high-voltage lead section and a low-voltage lead section are mounted on the Dewar end cover; a first end of the high-voltage lead section is connected with the transformer through a first high-low voltage lead, a second end of the high-voltage lead section is connected with a first high-temperature superconducting lead section, and the first high-temperature superconducting lead section is arranged in liquid nitrogen of the liquid nitrogen cooler; the first end of the low-voltage lead section is connected with the transformer through a second high-low-voltage lead, the second end of the low-voltage lead section is connected with a second high-temperature superconducting lead section, and the second high-temperature superconducting lead section is arranged in liquid nitrogen of the liquid nitrogen cooler. The structure is simple, the thermal conductivity, the insulating performance and the heat dissipation performance are excellent, thermal field distribution is remarkably optimized, the purpose of reducing heat leakage of the current lead is achieved by optimizing the objective function, and reliable support is provided for follow-up current lead design.

Description

technical field [0001] The invention belongs to the technical field of superconducting electric power application, and in particular relates to a structure and a design method of a horizontal Dewar high-temperature superconducting current lead. Background technique [0002] High-temperature superconducting current leads have the advantages of large transmission power, high current density, low loss, and environmental friendliness. High-temperature superconducting current leads are mainly used to supply power to superconducting magnets working in low-temperature environments. Compared with conventional copper current leads, the high-temperature superconducting section of the high-temperature superconducting current lead has no ohmic heat, and the thermal conductivity of the high-temperature superconducting section is much smaller than that of copper, and the conduction heat leakage through the high-temperature superconducting section is small. [0003] In the prior art, curre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F6/06H01F41/00
CPCH01F6/065H01F41/00Y02E40/60
Inventor 方进赵鑫王金浩
Owner BEIJING JIAOTONG UNIV
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