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A kind of ultra-low temperature cable

A technology of ultra-low temperature and cables, applied in the direction of insulating cables, cables, circuits, etc., can solve the problems of large, unsatisfactory, inability of cables to withstand ultra-low temperature, low resistance change rate, etc., achieve low density, improve anti-electromagnetic interference, and increase electrical conductivity performance effect

Active Publication Date: 2021-01-29
湖南华菱线缆股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The cables in the prior art cannot withstand ultra-low temperature, and at low temperatures, the conductor resistance change rate is large, which cannot meet the technical requirements of the special laboratory of the China Aerodynamic Research and Development Center, and can meet the requirements of liquid nitrogen, liquid oxygen, etc. at -200°C Therefore, there is an urgent need for an ultra-low temperature cable that can withstand ultra-low temperature, ensure low resistance change rate when switching between ultra-low temperature and normal temperature, anti-electromagnetic interference, and strong flexibility

Method used

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  • A kind of ultra-low temperature cable
  • A kind of ultra-low temperature cable
  • A kind of ultra-low temperature cable

Examples

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Effect test

Embodiment 1

[0038] Such as figure 1 As shown, the ultra-low temperature cable provided by this embodiment includes an insulating core layer 1, a braid layer 2, a wrapping layer 3, and a sheath layer 4 sequentially from the inside to the outside.

[0039] The central layer cable core 1 is composed of two pairs of cable core unit groups 1-1 and cable core unit group 1-2, and the cable core unit group 1-1 consists of an insulated outer conductor 1-12 and an insulated outer conductor 1-13 Formed in pairs, the insulated outer conductor 1-12 includes a conductor 1-121 and an ethylene-tetrafluoroethylene copolymer insulation layer 1-122 on its outer layer, and the insulated outer conductor 1-13 includes a conductor 1-131 and The ethylene-tetrafluoroethylene copolymer insulating layer 1-132 in its outer layer; the ethylene-tetrafluoroethylene copolymer insulating layer 1-122 and the 1-132 ethylene-tetrafluoroethylene copolymer insulating layer are respectively extruded by extrusion process Outsi...

Embodiment 2

[0055] Such as figure 2 As shown, it is a kind of ultra-low temperature cable provided by this embodiment, which sequentially includes two insulated central layer cable cores 1, braided layer 2, wrapping layer 3, and sheath layer (4) from the inside to the outside; the central layer cable core 1 It is composed of three pairs of cable core unit groups - cable core unit group 1-1, cable core unit group 1-2 and cable core unit group 1-3. Cable core unit group 1-1 consists of two insulated outer conductors - insulated outer conductors 1-12 and the insulated outer conductor 1-13 are twisted to form, the insulated outer conductor 1-12 includes a conductor 1-121 and an ethylene-tetrafluoroethylene copolymer insulating layer 1-122 on its outer layer, and the insulated outer conductor 1 -13 includes a conductor 1-131 and an ethylene-tetrafluoroethylene copolymer insulating layer 1-132 on its outer layer; ethylene-tetrafluoroethylene copolymer insulating layer 1-122 and 1-132 ethylene-...

Embodiment 3

[0069] Such as image 3 As shown, it is an ultra-low temperature cable provided in this embodiment, which sequentially includes four insulating core layer cores 1, braiding layer 2, wrapping layer 3, and sheath layer 4 from inside to outside;

[0070] The central layer cable core 1 is composed of three pairs of cable core unit groups—cable core unit group 1-1, cable core unit group 1-2 and cable core unit group 1-3. The cable core unit group 1-1 is composed of two insulating outsourcing Conductor—the insulated outer conductor 1-12 and the insulated outer conductor 1-13 are twisted to form, and the insulated outer conductor 1-12 includes a conductor 1-121 and an ethylene-tetrafluoroethylene copolymer insulating layer 1-122 on its outer layer , the insulated outer conductor 1-13 includes a conductor 1-131 and an ethylene-tetrafluoroethylene copolymer insulation layer 1-132 on its outer layer; ethylene-tetrafluoroethylene copolymer insulation layer 1-122 and 1-132 ethylene - The t...

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Abstract

The invention provides an ultra-low temperature cable, which sequentially includes at least one insulating center layer cable core, a braid layer, a wrapping layer, and a sheath layer from the inside to the outside; the center layer cable core is composed of multiple pairs of cable core unit groups. The cable core unit group is formed by twisting two insulated outer conductors, the insulated outer conductors include a conductor and an ethylene-tetrafluoroethylene copolymer insulation layer on its outer layer, and the wrapping is made of two layers of raw material tape wrap around. The braid is made of a metallized material or a metal-embedded (carbon-polymer) composite, formed in the nanocomposite matrix due to the embedding of the metal within the percolation threshold of the (carbon-polymer) nanocomposite matrix The network formed by nano-metal capacitors has greatly improved the dielectric constant of the metal-embedded (carbon simple substance-polymer) nanocomposite material, ensuring low resistance change rate, anti-electromagnetic interference, and flexibility when the cable is switched between ultra-low temperature and normal temperature. powerful.

Description

technical field [0001] The invention belongs to the technical field of cable materials, and particularly relates to a cable material suitable for continuous data acquisition, analog signal transmission, parameter control and power transmission under the environmental conditions of liquid nitrogen or aerodynamic wind tunnel laboratory -196°C to -70°C. Cryogenic cables. Background technique [0002] With the rapid development of my country's economic construction, the demand for electricity is increasing year by year. At present, the transmission of large-capacity electric energy in the world mainly relies on UHV DC transmission and EHVDC transmission. Although compared with traditional voltage transmission lines, UHV transmission lines have less loss, but the Joule loss on the line is still very large. With the rapid development of my country's economic scale, the people's demand for electricity is increasing day by day. In the near future, the transmission capacity of the t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B7/18H01B7/02H01B7/22H01B3/44H01B7/28H01B7/17H01B7/24H01B7/282H01B3/00H01B3/02
CPCH01B3/004H01B3/02H01B3/44H01B7/0258H01B7/17H01B7/1875H01B7/225H01B7/24H01B7/2806H01B7/2825Y02A30/14
Inventor 潘磊高帅
Owner 湖南华菱线缆股份有限公司
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