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Implementation method of mineral insulated coaxial cable

A technology of coaxial cable and realization method, which is applied in the direction of manufacturing coaxial cable, cable/conductor manufacturing, insulating conductor/cable, etc. Problems such as poor electrical performance, to achieve the effect of novel technology, compact structure, and improved electromagnetic shielding performance

Inactive Publication Date: 2013-04-03
CHINA ELECTRONICS TECH GRP NO 23 RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Certain performances of mineral insulated cables that are purely insulated with alumina or silica are limited, such as poor dielectric properties of cables with pure alumina insulation, and poor high-temperature insulation performance of purely silica-insulated cables

Method used

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  • Implementation method of mineral insulated coaxial cable
  • Implementation method of mineral insulated coaxial cable
  • Implementation method of mineral insulated coaxial cable

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Embodiment Construction

[0027] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0028] figure 1 As shown in , 1 is the inner conductor; 2 is the insulating medium layer; 3 is the three-layer composite shield; 31 is the inner shield; 32 is the middle shield; 33 is the outer shield.

[0029] Such as figure 1 In the shown three-layer composite shielded mineral insulated coaxial cable, in this embodiment, the inner conductor 1 is copper, the insulating medium layer 2 is a mixture of alumina and silicon oxide, the inner shield 31 is copper, and the middle shield 32 is iron , The outer shield 33 is stainless steel. The diameter of the inner conductor 1 is 0.72mm, the proportion of alumina in the insulating medium layer 2 is 70%, the thickness of the inner shield 31 is 0.75mm, the thickness of the middle shield 32 is 0.40mm, the thickness of the outer shield 33 is 0.50mm, and the final outer diameter of the product is 6.0 mm,...

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Abstract

The invention relates to the technical field of special cables and provides an implementation method of a mineral insulated coaxial cable which can realize signal communication transfer in an extreme weather condition; and the dielectric property and the high-temperature insulation performance of the cable can be comprehensively optimized to well satisfy the using requirements of the signal communication coaxial cable. The mineral insulated coaxial cable is characterized by comprising an inner conductor, an insulating medium layer and a three-layer composite shield body from inside to outside; the insulating medium layer is made of a mixture of aluminium oxide and silicon oxide; the three-layer composite shield body is formed by sequentially compositing an inner shield body, a middle shield body and an outer shield body, each layer can be made of copper pipes, iron pipes, stainless steel pipes or other high-temperature alloy pipes, and the adjacent layers can not be made of the same material. Compared with the conventional organic matter insulated cable, the three-layer composite shield mineral insulated coaxial cable has relatively long service life and relatively high reliability. Compared with a magnesium oxide mineral insulated cable, the three-layer composite shield mineral insulated coaxial cable has a relatively wide application field.

Description

technical field [0001] The invention belongs to the technical field of special cables, and in particular relates to a mineral insulated coaxial cable used as a signal communication transmission line under extremely harsh environmental conditions such as high temperature, high pressure, strong acid and alkali corrosion, and high radiation. technical background [0002] With the vigorous development of science and technology in our country, coaxial cables that can withstand extreme weather conditions are required in the fields of metallurgy, medical treatment, nuclear power, aerospace and other fields. The existing coaxial cables are composed of inner conductors, insulation, outer conductors and sheaths. , The insulating medium is generally made of polyethylene or polytetrafluoroethylene material with low loss and good process performance, the outer conductor is generally braided with metal wire, and the sheath material is generally polyethylene, polyvinyl chloride, polyurethan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B13/016H01B13/06H01B13/22
Inventor 杨延安李亚明单海龙
Owner CHINA ELECTRONICS TECH GRP NO 23 RES INST
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