CN202549354U

CN202549354U - Symmetrical type radio frequency cable

Info

Publication number: CN202549354U
Application number: CN2012201055525U
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: 2012-03-20
Filing date: 2012-03-20
Publication date: 2012-11-21
Anticipated expiration: 2022-03-20

Abstract

The utility model relates to a symmetrical type radio frequency cable, which comprises two alloy conductors. The outer sides of the alloy conductors are provided with insulation layers respectively. 23 silver-coated copper wires are twisted to form each of the alloy conductors, wherein the cross section of the alloy conductor is fusiform and a reinforced steel wire is adopted as the center of the alloy conductor. The diameter of each silver-coated copper wire is not less than 0.12 mm. The alloy conductors coated with the insulation layers and two filling cores are twisted to form a cable core and the cross sections of the filling cores are elliptic. The outside of the cable bore is successively coated with a wrapping layer and a shielding layer. Tin-coated copper wires are knitted to form the shielding layer. The diameter of each tin-coated copper wire is 0.15-0.18 mm and the knitting tightness of the tin-coated copper wires is not less than 85%. A sheath layer formed through extrusion molding is arranged on the outside of the shielding layer. According to the utility model, alloy conductors are adopted as the conductors of the symmetrical type radio frequency cable, so that the cable is better in strength and good in flexibility. The structural compactedness and the mechanical strength of the cable are also improved, while the service life of the cable is prolonged.

Description

A kind of symmetric form radio frequency cable

Technical field

This practicality relates to Aero-Space and uses field of cables, especially a kind of symmetric form radio frequency cable.

Background technology

The installing space of communication system is very narrow and small in aircraft cabin and the airship storehouse; The heat radiation situation is poor; Therefore require Aero-Space can satisfy the safe handling under 280 ℃ of conditions of operating ambient temperature with cable, and require steady signal transmission, it is little to decay; This has brought great difficulty with regard to the manufacturing of giving the Aero-Space cable, and some reasons are selection problems of the insulating layer material of cable; China's symmetric form cable of the prior art, mainly relatively poor in mechanical strength and structural compactness, cause useful life short.

Practical content

In order to remedy the deficiency of prior art, this practical purpose provides a kind of symmetric form radio frequency cable, and compact conformation has improved the mechanical strength of cable and effectively to the thermal endurance of environment.

In order to achieve the above object, the technical scheme that adopts of this practicality is:

The symmetric form radio frequency cable; It is characterized in that: include two outsides alloy conductor of insulating barrier respectively; To be that the center is stranded form the reinforcement steel wire that it is fusiformis with the cross section that described alloy conductor adopts 23 silver-coated copper wires, and the diameter of every silver-coated copper wire is for being not less than 0.12mm; The alloy conductor of wrap insulate layer and two cross sections are the stranded formation cable core of oval-shaped filled core; Cable core is coated with lapping layer, screen outward successively; Described screen is formed by the tinned wird braiding; The diameter of every tinned wird is 0.15 ~ 0.18mm, and count is not less than 85%, and the outer extrusion moulding of screen has restrictive coating.

Described symmetric form radio frequency cable is characterized in that: described insulating layer material adopts crosslinked polyethylene.

This practical advantage is:

The conductor of the utility model adopts alloy conductor, and the intensity that has improved cable has guaranteed the flexibility of cable again, and the structural compactness and the mechanical strength of cable get a promotion, and have prolonged useful life.

Description of drawings

Fig. 1 is the sketch map of this utility structure.

Embodiment

Referring to Fig. 1:

The symmetric form radio frequency cable includes two outsides alloy conductor 1 of insulating barrier 2 respectively, and the reinforcement steel wire 3 that it is fusiformis with the cross section that alloy conductor 1 adopts 23 silver-coated copper wires forms for the center is stranded, and the diameter of every silver-coated copper wire is for being not less than 0.12mm; The alloy conductor 1 of wrap insulate layer 2 and two cross sections are oval-shaped filled core 4 stranded formation cable cores, and cable core is coated with lapping layer 5, and lapping layer 5 can adopt the overlapping wrapped formation of mylar tape; Improve the fireproof high-temperature resistant performance of cable; Lapping layer is wrapped with screen 6, and screen 6 is formed by the tinned wird braiding, and the diameter of every tinned wird is 0.15 ~ 0.18mm; Count is not less than 85%, and screen 6 outer extrusion moulding have restrictive coating 7.

Insulating barrier 2 materials adopt crosslinked polyethylene.

Claims

1. symmetric form radio frequency cable; It is characterized in that: include two outsides alloy conductor of insulating barrier respectively; To be that the center is stranded form the reinforcement steel wire that it is fusiformis with the cross section that described alloy conductor adopts 23 silver-coated copper wires, and the diameter of every silver-coated copper wire is for being not less than 0.12mm; The alloy conductor of wrap insulate layer and two cross sections are the stranded formation cable core of oval-shaped filled core; Cable core is coated with lapping layer, screen outward successively; Described screen is formed by the tinned wird braiding; The diameter of every tinned wird is 0.15 ~ 0.18mm, and count is not less than 85%, and the outer extrusion moulding of screen has restrictive coating.

2. symmetric form radio frequency cable according to claim 1 is characterized in that: described insulating layer material adopts crosslinked polyethylene.