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Insulated multiple tubes for superconducting power transmission

A technology of multiple tubes and heat insulation, which is applied to superconducting devices, usage of superconductor elements, superconductor components, etc., can solve problems such as longer time-consuming, damage to multiple tubes of heat insulation, etc., to achieve simple construction, improve heat insulation, Excellent responsiveness

Active Publication Date: 2021-12-07
JFE STEEL CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The sparks generated at this time ignite the super insulator, causing fire and damage to the heat insulating multiple tubes used for superconducting power transmission.
In addition, when the space in which the super insulator is installed is decompressed to form a vacuum insulation layer, due to the gas existing in the super insulator as a multilayer film, the moisture adsorbed on the film, and the "gas component" coming out of the organic material, Therefore, there is a problem that the time taken for decompression becomes longer.

Method used

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  • Insulated multiple tubes for superconducting power transmission

Examples

Experimental program
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Effect test

Embodiment

[0076] In order to confirm the effect of the coating layer containing the metal powder, the samples prepared by the following procedure and evaluated emissivity. Note that, as used herein, the plate-like sample, but due to the shape of the substrate does not directly affect the emissivity, and therefore in an adiabatic multi-tube similar effect can be obtained.

[0077] First, the base material for forming the coating layer of the steel sheet, the steel sheet prepared 50mm × 100mm square. As the steel plate, using "SPCC" (general cold rolled steel) defined by JIS.

[0078] Subsequently, a pretreatment of the surface of the base steel sheet, coated on the surface of the base steel sheet containing a metal powder and dispersed in a coating, the coating layer is formed contains a metal powder. The pre-treatment application, a coating method and the type of coating material used contained metal powder and a binder are shown in Table 1. The metal coating layer after drying content (% b...

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Abstract

The present invention provides an adiabatic multitube for superconducting power transmission that highly suppresses the intrusion of heat from the outside by radiation without using a super insulator, has excellent adiabatic performance, and can be manufactured simply. A heat-insulating multiple tube for superconducting power transmission is a heat-insulating multiple tube for superconducting power transmission provided with a superconducting cable and a multiple tube for accommodating the superconducting cable, the multiple tube is composed of a plurality of straight tubes, and the multiple At least one of the straight pipes has a coating layer containing metal powder on its surface.

Description

Technical field [0001] The present invention relates to a superconducting power transmission insulating multiple tube (thermal-insulated multiple pipefor superconducting power transmission), particularly to highly suppress intrusion of heat caused by radiation from the outside and excellent thermal insulation properties of the superconducting power transmission insulating multiple tube. Background technique [0002] When a metal or alloy is cooled, at a certain temperature resistance abruptly decreased to zero superconductivity from being applied in various fields studied. Wherein, using a cable of the superconducting state of superconducting power transmission perform power transmission is being promoted as a method of transmission without power loss during transmission of the practical use. [0003] Superconducting power transmission, in order to maintain the cable in the superconducting state, the cooling of the cable need to have, therefore, proposed to use multiple insulatin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B12/14F16L9/18F16L59/075H01L39/04H02G15/34
CPCH02G15/34H01B12/14H01B7/2806H01B7/292Y02E40/60H10N60/81F16L59/075F16L9/18Y10S505/886F16L58/02F16L59/065
Inventor 石黑康英佐藤昭夫坂下重人
Owner JFE STEEL CORP
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