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Superconducting cable for insulation and thermal insulation

A superconducting cable, integrated technology, applied in the field of power engineering applications, can solve the problems of no larger cable space, insufficient capacity of conventional cables, etc., to achieve the effects of flexible and convenient connection, enhanced damage resistance, and simplified structure

Inactive Publication Date: 2008-10-08
北京云电英纳超导电力技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] 1. In urban dense residential areas, skyscrapers, conventional cable capacity is not enough, and there is no room for larger cables;

Method used

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  • Superconducting cable for insulation and thermal insulation
  • Superconducting cable for insulation and thermal insulation
  • Superconducting cable for insulation and thermal insulation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Embodiment 1: A superconducting cable (80 meters long) for powering a DC 200kA class aluminum electrolytic cell

[0039] The outer shell and inner tube are made of stainless steel plates. Due to the low voltage, the interlayer insulators are disc-type and made of temperature-resistant polytetrafluoroethylene, and are arranged every 5 meters. A set of corrugated telescopic section structures with a length of 500mm is arranged at a distance of 25 meters from both ends. The interlayer between the outer shell and the inner tube draws a lower vacuum for insulation.

Embodiment 2

[0040] Embodiment 2: Cable busbar (150 meters long) for the outlet of AC 26kA generator

[0041] The shell and the inner tube are made of rolled aluminum plates, and the interlayer insulators are made of polytetrafluoroethylene rods resistant to temperature changes. A set of insulators is arranged every 8 meters, and the number of insulators on the cross-section perpendicular to the cable at each support point is 4 indivual. A set of corrugated telescopic section structures with a length of 600mm are arranged every 30 meters on the shell and the inner pipe respectively. The interlayer between the outer shell and the inner tube is filled with lightweight airgel powder insulation.

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Abstract

The present invention provides an electrical and thermal insulating superconducting cable, which comprises a cable jacket, an inner tube, an interlayer between the cable jacket and the inner tube; wherein, the inner tube is a cryogenic coolant channel and a superconducting conductor; both the cable jacket and the inner tube have a corrugated expandable section; the interlayer between the cable jacket and the inner tube is an electrical and thermal insulating layer, with at least a set of interlayer insulators. The electrical and thermal insulating layer between the cable jacket and the inner tube is a vacuum interlayer or a layer filled with light foam and electrical and thermal insulating powder material. The cable provided in the present invention is mainly used for heavy current transmission, and is characterized in simple and practical structure, low manufacturing cost, high reliability, and can implement connection with field equipment more flexibly and conveniently.

Description

technical field [0001] The invention belongs to the technical field of electric power engineering application of superconducting cables, and in particular relates to a superconducting cable integrated with insulation and heat insulation. Background technique [0002] The development of high temperature superconducting cable technology has a history of more than ten years. Compared with conventional cables, superconducting cables have several advantages such as low loss, large capacity, small size and no pollution. The operating conditions of superconducting cables are very different from those of conventional cables. Superconducting conductors require low-temperature operating conditions (currently in the liquid nitrogen temperature zone, about -196°C). Therefore, in addition to the insulation layer, the superconducting cable also needs a heat insulation layer to maintain low temperature. [0003] The basic structure of high-temperature superconducting cables is very diffe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B12/14H01B12/16
CPCY02E40/645Y02E40/647Y02E40/60
Inventor 任安林席海霞陈志莉李欢欢
Owner 北京云电英纳超导电力技术有限公司
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