CN104733102A

CN104733102A - Spaceflight shielded cable for anti-explosion safety circuit

Info

Publication number: CN104733102A
Application number: CN201510089289.3A
Authority: CN
Inventors: 唐前进
Original assignee: NHUI CONSTANT CRYSTAL CABLE GROUP CO Ltd
Current assignee: NHUI CONSTANT CRYSTAL CABLE GROUP CO Ltd
Priority date: 2015-02-27
Filing date: 2015-02-27
Publication date: 2015-06-24

Abstract

The invention discloses a spaceflight shielded cable for an anti-explosion safety circuit. The spaceflight shielded cable comprises two sets of control cable cores, two metal hoses, two drainage wires and six external protection layers. The six external protection layers sequentially comprise the PVC insulating layer, the zinc plating aluminum strip shielding layer, the silver plating copper wire shielding layer, the copper-plastic nickel strip composite armor layer, the LSOH ethylene propylene sheath layer and the chlorosulfonation ethylene propylene sheath layer from inside to outside. The two sets of control cable cores are extruded inside the PVC insulating layer, and two sets of silver plating annealed aluminum alloy conductor cable cores are extruded inside each set of control cable core. The two metal hoses are extruded at the gap between the two sets of control cable cores inside the PVC insulating layer. The two silver plating nickel wire drainage wires are extruded between the PVC insulating layer and the zinc plating aluminum strip shielding layer. The spaceflight shielded cable for the anti-explosion safety circuit has the advantages of being good in shielding property, low in capacitance and inductance, high in anti-interference performance, not prone to bending, high in explosion-proof property and suitable for being applied to the field such as aerospace.

Description

A kind of anti-explosion safety circuit space flight shielded type cable

Technical field

The invention belongs to field of cables, particularly relate to a kind of anti-explosion safety circuit space flight shielded type cable.

Background technology

Cable has electric conductivity, be widely used in each different field, relating to people's lives, industrial production every field, so the consumption of cable is huge especially, is also important especially, also can be more and more higher to the requirement of quality, but in every field and each area, the quality purposes of cable is required it is different, as in fields such as space flight and aviation, cable is had to the requirement of low electric capacity, low inductance, could be durable in use, satisfy the demand.

Summary of the invention

In order to increase the practicality of prior art, the object of this invention is to provide a kind of explosion-proof strong, the anti-explosion safety circuit space flight shielded type cable of strong, the low electric capacity of shielding properties, low inductance and strong interference immunity.

The present invention takes following technical scheme to realize: a kind of anti-explosion safety circuit space flight shielded type cable, it comprises two groups and controls cable core, two metal hoses, two drainage threads and six layers of external protection, six layers of external protection are followed successively by polyvinyl chloride insulation layer from inside to outside, zinc-plated aluminium strip screen, silver-gilt copper wire screen, copper moulds nickel strap composite armor, low smoke and zero halogen second propylene restrictive coating and chlorosulfonation second propylene restrictive coating, polyvinyl chloride insulation layer is set to the central core of cable, two groups control cable core and are extruded in polyvinyl chloride insulation layer inside, the often inner three layers of restrictive coating extruding two groups of silver-plated annealed Al-alloy conductor thread cores and be wrapped in outside two groups of silver-plated annealed Al-alloy conductor thread cores of group, often organize silver-plated annealed Al-alloy conductor thread core inside and extrude 13 silver-plated annealed Al-alloy conductors, three layers of restrictive coating are followed successively by zinc-plated nickel strap screen from inside to outside, layer of polyester fiber and perfluoroethylene-propylene insulating barrier, the inside of described polyvinyl chloride insulation layer, two groups of gaps controlled between cable core extrude two zinc-aluminium-alloy metal hoses, described polyvinyl chloride insulation layer, two silver plated nickel wire drainage threads are extruded between zinc-plated aluminium strip screen and silver-gilt copper wire screen.

The cross-sectional diameter length of described zinc-aluminium-alloy metal hose is 0.8 ㎜, and the cross-sectional diameter length of silver plated nickel wire drainage thread is 0.6 ㎜.

The present invention has following beneficial effect in sum: this kind of cable has excellent shielding properties, has the feature of low electric capacity, low inductance and strong interference immunity, and not flexible, and explosion-proof is strong, is applicable to being applied to the fields such as Aero-Space.

Accompanying drawing explanation

Fig. 1 is cross-sectional structure schematic diagram of the present invention.

Embodiment

As shown in Figure 1, a kind of anti-explosion safety circuit space flight shielded type cable, it comprises two groups and controls cable core 1, two metal hoses, two drainage threads and six layers of external protection, six layers of external protection are followed successively by polyvinyl chloride insulation layer 4 from inside to outside, zinc-plated aluminium strip screen 5, silver-gilt copper wire screen 6, copper moulds nickel strap composite armor 7 low smoke and zero halogen second propylene restrictive coating 8 and chlorosulfonation second propylene restrictive coating 9, polyvinyl chloride insulation layer 4 is set to the central core of cable, two groups control cable core 1 and are extruded in polyvinyl chloride insulation layer 4 inside, the often inner three layers of restrictive coating extruding two groups of silver-plated annealed Al-alloy conductor thread cores 11 and be wrapped in outside two groups of silver-plated annealed Al-alloy conductor thread cores 11 of group, often organize silver-plated annealed Al-alloy conductor thread core 11 inside and extrude 13 silver-plated annealed Al-alloy conductors, three layers of restrictive coating are followed successively by zinc-plated nickel strap screen 12 from inside to outside, layer of polyester fiber 13 and perfluoroethylene-propylene insulating barrier 14, the inside of described polyvinyl chloride insulation layer 4, two groups of gaps controlled between cable core 1 extrude two zinc-aluminium-alloy metal hoses 2, described polyvinyl chloride insulation layer 4, two silver plated nickel wire drainage threads 3 are extruded between zinc-plated aluminium strip screen 5 and silver-gilt copper wire screen 6.

Embodiment: the cross-sectional diameter length of described silver-plated annealed Al-alloy conductor is 0.35 ㎜, the cross-sectional diameter length of described zinc-aluminium-alloy metal hose 2 is 0.8 ㎜, and the cross-sectional diameter length of silver plated nickel wire drainage thread 3 is 0.6 ㎜.

The zinc-plated aluminium strip screen 5 of outer wrapping one deck of described polyvinyl chloride insulation layer 4, outer wrapping one deck silver-gilt copper wire screen 6 of described zinc-plated aluminium strip screen 5, outer wrapping one deck copper of described silver-gilt copper wire screen 6 moulds nickel strap composite armor 7, described copper moulds outer wrapping one deck low smoke and zero halogen second propylene restrictive coating 8 of nickel strap composite armor 7, outer wrapping one deck chlorosulfonation second propylene restrictive coating of described low smoke and zero halogen second propylene restrictive coating 8.

Further, outer wrapping one deck layer of polyester fiber 13 of described zinc-plated nickel strap screen 12, outer wrapping one deck perfluoroethylene-propylene insulating barrier 14 of described layer of polyester fiber 13.

This cable allows operational environment maximum temperature to be 95 DEG C, and the minimum temperature of mounting and installation is-20 DEG C; Can stand to exchange 50HZ, 3.5Kv/5min voltage and not breakdown; The shielding rejection coefficient of this cable is less than 0.7.

The above is the embodiment of the present invention, therefore all equivalences done according to structure, feature and the principle described in the present patent application scope change or modify, and are included in patent claim of the present invention.

Claims

1. an anti-explosion safety circuit space flight shielded type cable, it comprises two groups and controls cable core, two metal hoses, two drainage threads and six layers of external protection, it is characterized in that: six layers of external protection are followed successively by polyvinyl chloride insulation layer from inside to outside, zinc-plated aluminium strip screen, silver-gilt copper wire screen, copper moulds nickel strap composite armor, low smoke and zero halogen second propylene restrictive coating and chlorosulfonation second propylene restrictive coating, polyvinyl chloride insulation layer is set to the central core of cable, two groups control cable core and are extruded in polyvinyl chloride insulation layer inside, the often inner three layers of restrictive coating extruding two groups of silver-plated annealed Al-alloy conductor thread cores and be wrapped in outside two groups of silver-plated annealed Al-alloy conductor thread cores of group, often organize silver-plated annealed Al-alloy conductor thread core inside and extrude 13 silver-plated annealed Al-alloy conductors, three layers of restrictive coating are followed successively by zinc-plated nickel strap screen from inside to outside, layer of polyester fiber and perfluoroethylene-propylene insulating barrier, the inside of described polyvinyl chloride insulation layer, two groups of gaps controlled between cable core extrude two zinc-aluminium-alloy metal hoses, described polyvinyl chloride insulation layer, two silver plated nickel wire drainage threads are extruded between zinc-plated aluminium strip screen and silver-gilt copper wire screen.

2. anti-explosion safety circuit space flight shielded type cable according to claim 1, is characterized in that: the cross-sectional diameter length of described zinc-aluminium-alloy metal hose is 0.8 ㎜, and the cross-sectional diameter length of silver plated nickel wire drainage thread is 0.6 ㎜.