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superconducting cable

A superconducting cable and cable technology, applied in the field of power transmission, can solve problems affecting the cooling effect of liquid nitrogen

Active Publication Date: 2021-03-30
SHENZHEN POWER SUPPLY BUREAU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Based on this, it is necessary to provide a superconducting cable for the problem that the boundary layer on the surface of the current-carrying conductor affects the cooling effect of liquid nitrogen on the current-carrying conductor.

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Embodiment Construction

[0044] In order to make the above-mentioned purpose, features and advantages of the present application more obvious and understandable, the specific implementation manners of the present application will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the application. However, the present application can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific implementation disclosed below.

[0045] It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" an...

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Abstract

The invention relates to a superconducting cable. The superconducting cable comprises a power-on conductor, a low-temperature Dewar tube and a first flow velocity enhancement layer. The low-temperature Dewar tube forms a containing cavity in a surrounding mode, the power-on conductor is arranged in the containing cavity, and the containing cavity is filled with liquid nitrogen. The first flow velocity enhancement layer covers the outer surface of the power-on conductor and is used for increasing the flow velocity of liquid nitrogen flowing through the outer surface of the power-on conductor. In the superconducting cable, the first flow velocity enhancement layer covers the outer surface of the power-on conductor, the boundary layer formed on the outer surface of the power-on conductor canbe broken and thus, the flow velocity of liquid nitrogen flowing through the outer surface of the power-on conductor can be increased. Thus, as the first flow velocity enhancement layer is arranged, the velocity of the liquid nitrogen flowing through the outer surface of the power-on conductor can be ensured, the cooling effect of the liquid nitrogen on the power-on conductor is thus improved, andthe superconducting performance of the power-on conductor is ensured.

Description

technical field [0001] The present application relates to the technical field of power transmission, in particular to a superconducting cable. Background technique [0002] In superconducting cables, cryogenic Dewar tubes are usually used, and liquid nitrogen is filled in the cryogenic Dewar tubes to cool down the current-carrying conductors. In order to achieve a better cooling effect, the liquid nitrogen in the cryogenic Dewar needs to have certain fluidity. [0003] However, a boundary layer is formed when the energized conductor is pressed against the surface of the liquid nitrogen, and the liquid nitrogen in the boundary layer has almost no flow velocity. Therefore, the boundary layer on the surface of the energized conductor greatly affects the cooling effect of liquid nitrogen on the energized conductor, which makes the superconducting cable face the risk of quenching. Contents of the invention [0004] Based on this, it is necessary to provide a superconducting c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B12/16
CPCH01B12/16Y02E40/60
Inventor 胡子珩吴小辰章彬汪桢子汪伟王哲林子钊魏前虎谭波马镇威
Owner SHENZHEN POWER SUPPLY BUREAU
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