CN205881497U

CN205881497U - High fire -retardant fire resisting cable of environment -friendly

Info

Publication number: CN205881497U
Application number: CN201620653741.4U
Authority: CN
Inventors: 刘妍
Original assignee: Hubei Hongde Cable Co Ltd
Current assignee: Hubei Hongde Cable Co Ltd
Priority date: 2016-06-28
Filing date: 2016-06-28
Publication date: 2017-01-11
Anticipated expiration: 2026-06-28

Abstract

The utility model belongs to the technical field of the wire and cable technique and specifically relates to a high fire -retardant fire resisting cable of environment -friendly, wrap up lock armo layer and outer jacket outside the cable core in proper order including cable core and from interior to exterior, it has fire -retardant stopping to fill between cable core and lock armo layer to through winding the package around the band, the cable core is sticis by three conductor stranding and forms, and every wire is constituteed with resistant high temperature insulating layer by the mica flame retardant coating that copper conductor and from interior to exterior wrapped up in proper order outside the copper conductor, fire -retardant stopping adoption chrysotile, around band adoption high silica glass fiber cloth, the oxygen index (OI) is greater than 40%, it is two -layer that mica tape overlapping is calcined in the adoption of mica flame retardant coating, and thickness is 0.25~0.8mm, takes pressure rate more than or equal to 50%, the utility model discloses simple structure compactness, simple to operate, compliance and leakproofness are good, have better fire resistance and anti mechanical shock performance, extensively are applicable to the use of the electric control cable in places such as nuclear energy, boats and ships, smelting.

Description

Environment-friendly high fire-retardant fire-resisting cable

Technical field

This utility model relates to technical field of electric wires and cables, especially a kind of environment-friendly high fire-retardant fire-resisting cable.

Background technology

Currently, the fire-resisting cable on domestic market is essentially all and processes life for requiring meeting GB/T19666 standard Producing, cable reaches for fire temperature 750 DEG C at laboratory, for, time in fire time 90min by the requirement of fire resistance test, i.e. demarcating For qualified products.But, " cable performance that holding circuit is intact in case of fire is wanted for this cable and Britain BS6387 standard Seek specification " compare, not only refractory temperature is low, bending property is poor, and mechanical shock resistance is poor, and installation is inconvenient, close The envelope property moisture absorption poor, easy, easily distributes toxic and harmful when burning, environment is caused severe contamination.

Summary of the invention

The purpose of this utility model seeks to solve that current fire-resisting cable fire resistance is poor, mechanical shock resistance is poor, close Envelope property is poor, and problem not environmentally, provides a kind of environment-friendly high fire-retardant fire-resisting cable for this.

Concrete scheme of the present utility model is: environment-friendly high fire-retardant fire-resisting cable, includes cable core and the most successively The lock armo layer being wrapped in outside cable core and outer jacket, be filled with flame-retardant filler between cable core and lock armo layer, and lead to Cross twining package tape wrapped；It is characterized in that: cable core was formed by three of the wires stranded pressing, each wire is by copper conductor and from the inside to the outside The Muscovitum fireprotection layer being wrapped in successively outside copper conductor forms with temperature-resistant insulation layer；Described flame-retardant filler uses chrysotile；Institute Stating twining package tape and use high silica glass cloth, oxygen index (OI) is more than 40%；Described Muscovitum fireprotection layer use calcining mica tape overlapping around Double-baging, thickness is 0.25～0.8mm, and pressure rate is more than or equal to 50%.

Lock armo layer described in this utility model is formed by S type lock catch type copper strips armouring successively, and outer jacket uses material For ethylene-vinyl acetate copolymer, and extrusion cladding is on lock armo layer.

Described in this utility model, temperature-resistant insulation layer is made up of cross-linking polyethylene materials, is extruded in outside Muscovitum fireprotection layer； Described copper conductor was formed by some bare copper wire stranded pressing.

This utility model has the advantage that

(1) this utility model simple in construction, easy for installation, and install, continue and common plastic insulating power cable Close, it is not necessary to special adnexa and instrument；

(2) this utility model is by using by the stranded cable core pressed of three of the wires and using lock armo layer to be coated with Cable core so that cable core structure is compact, and there is less bending radius, improving the bending property of cable, flexibility is good；

(3) this utility model fire resistance is greatly improved, and from original fire resistance test, is confession when 750 DEG C for fire temperature Fire time 90min, change into present when being 950 DEG C for fire temperature for fire time 180min, thus refractory temperature improves 200 DEG C, fire resistance period extends one times；

(4) this utility model mechanical resistant impact property is good, it is possible to bear stronger mechanical external force drawing and impact；

(5) this utility model good airproof performance, protection against the tide, anticorrosion so that cable, when long period no power runs, also will not Its insulating properties are reduced because of absorbed moisture；

(6) temperature-resistant insulation layer of the present utility model and outer jacket all use low cigarette, halogen-free material, so that this practicality Novel have preferable environmental-protecting performance.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model；

Fig. 2 is the structural representation of lock armo layer in this utility model.

In figure: 1 outer jacket, 2 lock armo layers, 3 flame-retardant fillers, 4 twining package tapes, 5 copper conductors, 6 clouds Female fireprotection layer, 7 temperature-resistant insulation layers, 8 S type lock catch type copper strips.

Detailed description of the invention

See Fig. 1, this utility model include cable core and the lock armo layer 2 that is wrapped in the most successively outside cable core with Outer jacket 1, is filled with flame-retardant filler 3 between cable core and lock armo layer 2, and wrapped by twining package tape 4；Described cable core by Three of the wires stranded pressing forms, and each wire is prevented by copper conductor 5 and the Muscovitum being wrapped in the most successively outside copper conductor 5 Fire bed 6 forms with temperature-resistant insulation layer 7, and wherein every copper conductor 5 was formed by some bare copper wire stranded pressing；Described fire-retardant Inserts 3 uses chrysotile；Described twining package tape 4 uses high silica glass cloth, and oxygen index (OI) is more than 40%；Described Muscovitum is prevented fires Layer 6 uses calcining mica tape overlap around double-baging, and thickness is 0.25～0.8mm, and pressure rate is more than or equal to 50%.

Seeing Fig. 2, lock armo layer described in the present embodiment 2 is formed by S type lock catch type copper strips 8 successively armouring, outer jacket 1 Employing material is ethylene-vinyl acetate copolymer, and extrusion cladding is on lock armo layer 2.

Temperature-resistant insulation layer 7 described in the present embodiment is made up of cross-linking polyethylene materials, is extruded in outside Muscovitum fireprotection layer 6.

The calcining mica tape that in the present embodiment, Muscovitum fireprotection layer 6 is used is for when breaking out of fire, and calcining mica tape exists Sinter the cable conductor protective layer of densification under high-temperature calcination into, thus be effectively increased the fire resistance of cable, extend fire In the case of conduction time of cable.

Claims

1. environment-friendly high fire-retardant fire-resisting cable, includes cable core and the lock armo layer being wrapped in the most successively outside cable core With outer jacket, between cable core and lock armo layer, it is filled with flame-retardant filler, and wrapped by twining package tape；It is characterized in that: cable Core was formed by three of the wires stranded pressing, and each wire is by copper conductor and the Muscovitum that is wrapped in the most successively outside copper conductor Fireprotection layer forms with temperature-resistant insulation layer；Described flame-retardant filler uses chrysotile；Described twining package tape uses vagcor fine Wei Bu, oxygen index (OI) is more than 40%；Described Muscovitum fireprotection layer uses calcining mica tape overlapping around double-baging, thickness be 0.25～ 0.8mm, pressure rate is more than or equal to 50%；Described lock armo layer is formed by S type lock catch type copper strips armouring successively, and outer jacket uses Material is ethylene-vinyl acetate copolymer, and extrusion cladding is on lock armo layer.

Environment-friendly high fire-retardant fire-resisting cable the most according to claim 1, is characterized in that: described temperature-resistant insulation layer is by cross-linking Polythene material is constituted, and is extruded in outside Muscovitum fireprotection layer；Described copper conductor was formed by some bare copper wire stranded pressing.