CN203850016U

CN203850016U - Fire-fighting halogen-free low-smoke armored radio frequency cable

Info

Publication number: CN203850016U
Application number: CN201420193771.2U
Authority: CN
Inventors: 李明升
Original assignee: Yangzhou Ming Xin Electrical Equipment Cable Co Ltd
Current assignee: Mingxin intelligent optical communication (Jiangsu) Co., Ltd.
Priority date: 2014-04-21
Filing date: 2014-04-21
Publication date: 2014-09-24
Anticipated expiration: 2024-04-21

Abstract

The utility model discloses a fire-fighting halogen-free low-smoke armored radio frequency cable comprising an inner conductor, an insulation layer, a shield layer, a glass cloth fiber belt, an inner sheath, an armored layer and an outer sheath; the inner conductor is formed by twisting a plurality of oxygen-free copper wires and wrapped by the inner insulation layer made of LDPE insulation material; the insulation layer is wrapped by the shield layer with a shield density above 90% and formed by tinned copper wire braiding dense net; the shield layer is wrapped in sequence by the glass cloth fiber belt, the inner sheath, the armored layer and the outer sheath. The fire-fighting halogen-free low-smoke armored radio frequency cable is reasonable in structure, good in usage performance, has halogen-free low-smoke and flameproof fire fighting performances, is pressure resistant, mice-proof, can satisfy usage needs, and has very good practicality.

Description

Fire-fighting halogen-free low-smoke armouring radio frequency cable

Technical field

The utility model belongs to cable technology field, is specifically related to a kind of fire-fighting halogen-free low-smoke armouring radio frequency cable.

Background technology

Along with people's fire-fighting consciousness constantly strengthens, security against fire is very important, the common radio frequency cable using of monitoring is at present generally main by common polythene, pvc material, the fire-fighting poor-performing such as fire-retardant, low cigarette of cable itself during as security incidents such as breaking out of fires, and crushing resistance, mouse bite preventing aspect needs to improve.

Utility model content

Goal of the invention: for the deficiencies in the prior art, the purpose of this utility model is to provide a kind of fire-fighting halogen-free low-smoke armouring radio frequency cable, makes it have Halogen, low cigarette, the fire-fighting performance such as fire-retardant, and resistance to compression, the features such as mouse bite preventing, meet user demand.

Technical scheme: in order to realize above-mentioned utility model object, the technical solution adopted in the utility model is:

A kind of fire-fighting halogen-free low-smoke armouring radio frequency cable, comprises inner wire, insulating barrier, screen, glass cloth fabric strip, inner sheath, armour and oversheath; To be that multiply copper free wire is stranded form inner wire, and at inner wire wrap insulate layer, described insulating barrier is low density polyethylene (LDPE) Insulation Material; The employing tinned copper wire reaching more than 90% in described insulating barrier outer wrapping shielding density weaves the screen that close net forms; Wrap up successively glass cloth fabric strip, inner sheath, armour and oversheath outward at described screen.

Described inner sheath is high density polyethylene (HDPE) inner sheath.

Described armour is double-deck galvanized steel strip.

Described oversheath is halogen-free and low-smoke flame-retardant polyolefin oversheath.

Beneficial effect: compared with prior art, fire-fighting halogen-free low-smoke armouring radio frequency cable of the present utility model, this construction of cable is reasonable, serviceability is good, has Halogen, low cigarette, the fire-fighting performance such as fire-retardant, and resistance to compression, the advantages such as mouse bite preventing, can meet user demand, have good practicality.

Brief description of the drawings

Fig. 1 is the structural representation of fire-fighting halogen-free low-smoke armouring radio frequency cable.

Embodiment

Below in conjunction with concrete accompanying drawing, the utility model is further described.

As shown in Figure 1, fire-fighting halogen-free low-smoke armouring radio frequency cable, inner wire 1, insulating barrier 2, screen 3, glass cloth fabric strip 4, inner sheath 5, armour 6 and the oversheath 7 of parcel form successively from inside to outside.Inner wire 1 adopts multiply copper free wire, insulating barrier 2 is low density polyethylene (LDPE) Insulation Material, adopts segmentation circulating water when production, ensures insulating barrier uniformity, and dielectric loss is little, screen 3 adopts tinned copper wire to weave close net formation, and shielding density reaches more than 90%, strengthens its interference free performance, between screen 3 and inner sheath 5, wrap up glass cloth fabric strip 4, this material has good fire-retardant, fire resistance, the inner sheath 5 of cable adopts high density polyethylene (HDPE) protective cover material, hardness is higher, while well having solved steel-tape armouring because semi-finished product are thinner, and the soft product easily causing is injured, and the inner wire problem such as open circuit, armour 6 is double-deck galvanized steel strip, when cable direct-burried, there is good resistance to compression effect, and can prevent the mouse cable that bites, outermost layer oversheath 7 adopts halogen-free and low-smoke flame-retardant polyolefin sheathed material, color is red, to warn, with fire protection equipment solid colour, be different from other wirings, this material has environmental protection, nontoxic, low cigarette, the fire-retardant premium properties that waits, technical indicator meets JB/T 10707-2007 standard and the RoHS of European Union environmental protection command request.

Fire-fighting halogen-free low-smoke armouring radio frequency cable of the present utility model, has Halogen, low cigarette, the fire-fighting performance such as fire-retardant, and resistance to compression, and the advantages such as mouse bite preventing, can meet user demand, have good practicality.

Claims

1. a fire-fighting halogen-free low-smoke armouring radio frequency cable, is characterized in that: comprise inner wire (1), insulating barrier (2), screen (3), glass cloth fabric strip (4), inner sheath (5), armour (6) and oversheath (7); Inner wire (1) forms for multiply copper free wire is stranded, and at inner wire (1) wrap insulate layer (2), described insulating barrier (2) is low density polyethylene (LDPE) Insulation Material; The employing tinned copper wire reaching more than 90% in described insulating barrier (2) outer wrapping shielding density weaves the screen (3) that close net forms; Outside described screen (3), wrap up successively glass cloth fabric strip (4), inner sheath (5), armour (6) and oversheath (7).

2. fire-fighting halogen-free low-smoke armouring radio frequency cable according to claim 1, is characterized in that: described inner sheath (5) is high density polyethylene (HDPE) inner sheath.

3. fire-fighting halogen-free low-smoke armouring radio frequency cable according to claim 1, is characterized in that: described armour (6) is double-deck galvanized steel strip.

4. fire-fighting halogen-free low-smoke armouring radio frequency cable according to claim 1, is characterized in that: described oversheath (7) is halogen-free and low-smoke flame-retardant polyolefin oversheath.