High temperature resistant flexible deintercalating/removing and signal transmission long line cable used for aerospace

A signal transmission, high-temperature flexible technology, applied in the direction of insulated cables, bendable cables, cables, etc., can solve the problems of reducing the reliability of cable performance, poor cable flexibility, and easy to be scratched, so as to achieve the goal of not being easily scratched, Superior low temperature resistance and improved flexibility

Inactive Publication Date: 2012-06-06
SHANGHAI SPECIAL CABLE ELECTROTECHN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The high temperature resistance of the cable is mainly through the selection of materials with excellent high temperature resistance as the insulation and sheath material of the cable. At present, the insulation materials with good high temperature resistance include polyethylene-tetrafluoroethylene copolymer, cross-linked polyethylene-tetrafluoroethylene Copolymer, polyperfluoroethylene propylene, polytetrafluoroethylene, polyperfluoroalkyl vinyl ether, polyimide, and silicone rubber, etc.; but in this cable, the cable is required to have good flexibility, which is convenient for installation and recycling Packing, such as polyethylene-tetrafluoroethylene copolymer, cross-linked polyethylene-tetrafluoroethylene copolymer, polyperfluoroethylene propylene, polytetrafluoroethylene, polyperfluoroalkyl vinyl ether as the sheath material, cable The flexibility will be very poor, so the same material as the core cannot be used as the cable sheath material; the polyimide material is used as the sheath material, the process is very complicated, and in the sheath production process, high temperature is required Sintering will inevitably affect the key part of the cable - the core, which will have a great impact on the reliability of the product quality; if the silicone rubber material is used, the cable has good flexibility, but the cable is easily scratched during installation and recycling. Significantly reduces the reliability of the cable performance

Method used

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  • High temperature resistant flexible deintercalating/removing and signal transmission long line cable used for aerospace
  • High temperature resistant flexible deintercalating/removing and signal transmission long line cable used for aerospace

Examples

Experimental program
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Effect test

Embodiment 1

[0031] High temperature resistant flexible plug-in and signal transmission long-line cable for aerospace with 38 cores, such as figure 1 As shown, it includes a cable core and an outer sheath layer 2 wrapped outside the cable core. The cable core includes 19 groups of inner cores 1, and each group of inner cores 1 includes two mutually twisted insulated wire cores and is wrapped in two The metal shielding layer 13 outside the two twisted insulated wire cores, the insulated wire core includes a conductor 11 and an insulating layer 12 wrapped outside the conductor 11; the outer sheath layer 2 is a high temperature resistant fiber braided layer.

[0032] The preparation of the high-temperature-resistant flexible detachment and signal transmission long-line cable for aerospace with an inner core of 38 cores includes the following steps:

[0033] 1) Use 19 / 0.18mm silver-plated copper stranded wires to form a round silver-plated copper stranded conductor through concentric stranding...

Embodiment 2

[0040] The preparation of a high-temperature-resistant flexible detachment and signal transmission long-line cable for aerospace use with an inner core of 50 cores includes the following steps:

[0041] 1) Use 19 / 0.18mm silver-plated copper stranded wires to form a round silver-plated copper stranded conductor through concentric stranding; among them, the stranding pitch is 16D (D is the outer diameter of the silver-plated copper stranded conductor) , the outer diameter of the silver-plated copper stranded conductor is 0.90mm;

[0042] 2) Using a high-temperature extruder outside the silver-plated copper stranded conductor to form an insulating layer through the extrusion process of granular or massive high-temperature-resistant insulating materials to obtain an insulated wire core, wherein the thickness of the insulating layer is 0.25mm , the outer diameter of the insulated wire core is 1.40±0.05mm;

[0043] 3) Twisting two insulated wire cores of blue and transparent color ...

Embodiment 3

[0048] The preparation of the high-temperature-resistant flexible detachment and signal transmission long-line cable for aerospace with a 28-core inner core includes the following steps:

[0049] 1) Use 19 / 0.18mm silver-plated copper stranded wires to form a round silver-plated copper stranded conductor through concentric stranding; among them, the stranding pitch is 16D (D is the outer diameter of the silver-plated copper stranded conductor) , the outer diameter of the silver-plated copper stranded conductor is 0.90mm;

[0050] 2), outside the silver-plated copper stranded conductor, use a high-temperature extruder to form an insulating layer through the extrusion process of the granular high-temperature-resistant insulating material to obtain an insulating wire core, wherein the thickness of the insulating layer is 1.0mm, and the The outer diameter of the insulated wire core is 2.90±0.10mm;

[0051] 3) Twisting two insulated wire cores of blue and transparent color respecti...

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Abstract

The invention belongs to the field of electric wires and cables and relates to a high temperature resistant flexible deintercalating / removing and signal transmission long line cable used for aerospace. The high temperature resistant flexible deintercalating / removing and signal transmission long line cable used for the aerospace comprises a cable core and an outer sheath layer covering the exterior of the cable core, wherein the cable core comprises multiple groups of inner cores; each group of inner cores comprises a plurality of mutually-twisted insulating wire cores and a metal shielding layer covering the exteriors of the plurality of mutually-twisted insulating wire cores; each insulating wire core comprises a conductor and an insulating layer covering the exterior of the conductor; and the outer sheath layer is a high temperature resistant fiber braiding layer. The cable disclosed by the invention has the performances of high temperature resistance, flexibility, high flame retardancy and the like, is safe and reliable to use and can be widely applied to the fields of aerospace and the like.

Description

technical field [0001] The invention belongs to the field of wires and cables, and relates to a high-temperature-resistant flexible detachment and signal transmission long-line cable for aerospace. Background technique [0002] With the development of our country's economy, human beings have gradually deepened their understanding of space, and their exploration of space has also increased year by year. Every year, domestic space launch missions increase year by year, and new requirements are put forward for each type of cable in the launch system. Aerospace high-temperature-resistant flexible plug-in and signal transmission long-line cables not only require high-temperature resistance and softness, but also require wear resistance during installation to prevent damage to the cable during installation. The flame is sprayed onto the cable, so it is proposed that the cable should have good high temperature performance and flame retardant performance. After each use, the cable ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/04H01B7/02H01B7/29
Inventor 王星忻济民
Owner SHANGHAI SPECIAL CABLE ELECTROTECHN
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