CN205140574U

CN205140574U - Flexible fireproof cable

Info

Publication number: CN205140574U
Application number: CN201521020959.8U
Authority: CN
Inventors: 姚章清; 程乾
Original assignee: Taifeng Cable Group Co Ltd
Current assignee: Taifeng Cable Co., Ltd.
Priority date: 2015-12-10
Filing date: 2015-12-10
Publication date: 2016-04-06
Anticipated expiration: 2025-12-10

Abstract

The utility model relates to a flexible fireproof cable, including three conductor sinle silks, ground wire, band layer and sheaths. Three conductor sinle silks with the ground wire transposition be in the same place the outside cladding band layer of conductor sinle silk and ground wire, the outside packet sheath of crowding on band layer. Conductor sinle silk and ground wire are equipped with conductor, insulating layer respectively, wind the covering and divide the typewriter ribbon. The outside wrapped insulating layer of conductor, the outside cladding of insulating layer divides the typewriter ribbon to establish in the outside around the covering around the covering. Clearance between conductor sinle silk, the ground wire is equipped with the filling layer, and the clearance between conductor sinle silk and ground wire and the band layer is equipped with the filling layer. The utility model discloses having big, flexible good, the corrosion -resistant and high temperature resistance characteristic of current -carrying capacity, satisfying 250 DEG C of operating temperature's requirement, the adaptation is transshipped and the flame environment uses down.

Description

A kind of flexible fire-proof cable

Technical field

The utility model belongs to power equipment equipment technical field, relates to a kind of cable, is specifically related to a kind of flexible fire-proof cable.

Background technology

The insulating material of common cable, electric wire is all high-molecular organic material, easily carbonizes, lose insulating effect under flame condition.Do not have good fire prevention conducting system, power transmission and transformation system will be caused to paralyse, fireproof cable is the crucial equipment of fire-fighting system.The transmission of electricity function how can bring into normal play under flame condition is a major issue of fireproof cable.

Flexible fire-proof cable applied range, quality requirement is high, there is a lot of insoluble problem in process of production.Insulating dielectric materials is mainly pushed out cylindrical shape by original magnesia powder by sintering technology by current flexible fire-proof cable, then by manual operations, magnesium oxide powder agglomates is penetrated in conductor and copper pipe, annealed drawing technique makes it elongated gradually, finally forms insulated cable.Due to by copper pipe after the drawing of copper pipe thickness limits gradually elongated thickness reduce gradually, tight consolidation is become gradually by technology controlling and process between conductor and insulation, but production length is very limited, and production cost is higher, difficulty of processing is larger, insulation fire protecting performance also has much room for improvement, and is difficult to continued power under high temperature sintering state.

Utility model content

The purpose of this utility model is to provide a kind of flexible fire-proof cable, meets the requirement of the long-term 250 DEG C of working temperatures of cable, adapt to overload and flame environment under use, make cable have corrosion-resistant, resistant to elevated temperatures characteristic.

The technical solution of the utility model is: flexible fire-proof cable, comprises three conductor thread cores, ground wire, belting layer and sheaths.Three conductor thread cores and ground wire twist together, and the coated belting layer in outside of conductor thread core and ground wire, the outside of belting layer extrudes sheath.Conductor thread core and ground wire are respectively equipped with conductor, insulating barrier, lapping layer and point colour band.The outside coated insulation layer of conductor, the coated lapping layer in outside of insulating barrier, point colour band is located at the outside of lapping layer.Gap between conductor thread core, ground wire is provided with packed layer, and conductor thread core and the gap between ground wire and belting layer are provided with packed layer.

Conductor is bare copper wire or coating copper wire, and a point colour band is that PP high temperature divides colour band, and insulating barrier is can porcelain SiClx rubber composite belt insulating barrier, and lapping layer is one side glass gold mica tape lapping layer.The thickness of insulating barrier is 0.4 ~ 2.0mm.The thickness of lapping layer is 0.4 ~ 0.6mm, and overlapping wrapped 3 layers, Duplication is 40% ~ 55%.Belting layer is fluorine synthetic mica belting layer, and sheath is the embossing copper sheath of argon arc longitudinal seam welding, and the material of packed layer is that silk filled by glass fibre.The wrapped Duplication of belting layer is 40% ~ 55%.The thickness of sheath is 0.4 ~ 1.2mm.

After the clean clean accurate trimming of copper strips, by particular manufacturing craft longitudinal tubing, under inert gas shielding, dock longitudinal seam welding continuously.Wherein, the pressure of argon gas should control between 6 ~ 10Mpa, and welding current control is between 10 ~ 70A.After longitudinal seam welding, cable makes flexible fire-proof cable through cooling and lubricating, the flaw detection of drawn sizing, Vortex stream and embossing.

The utility model is by having large, flexible, the corrosion-resistant and resistant to elevated temperatures characteristic of ampacity by the flexible fire-proof cable that forms of porcelain SiClx rubber composite belt insulating barrier, one side glass gold mica tape lapping layer, fluorine synthetic mica belting layer and argon arc longitudinal seam welding copper sheath layer, meet the requirement of the long-term 250 DEG C of working temperatures of cable, adapt to overload and flame environment under use.The fusing point of its copper sheath is 1083 DEG C, and cable can continue to keep power supply under the fire condition close to copper fusing point, is a kind of high-quality fireproof cable.

Accompanying drawing explanation

Fig. 1 is the schematic cross-section of the utility model flexible fire-proof cable;

Fig. 2 is the schematic cross-section of conductor wire core and ground wire;

Wherein:

1-conductor, 2-point colour band, 3-insulating barrier, 4-lapping layer, 5-packed layer, 6-belting layer, 7-sheath, 8-ground wire, 9-conductor wire core.

Embodiment

Below in conjunction with embodiment and accompanying drawing, the utility model is described in detail.The utility model protection range is not limited to embodiment, and those skilled in the art make the scope that any change also belongs to the utility model protection in the scope that claim limits.

The utility model flexible fire-proof cable as shown in Figure 1, comprises three conductor thread cores 8, ground wire 9, belting layer 6 and sheath 7.Belting layer is fluorine synthetic mica belting layer, and sheath is the embossing copper sheath of argon arc longitudinal seam welding.Three conductor thread cores and ground wire twist together, the coated belting layer in outside of conductor thread core and ground wire, and the wrapped Duplication of belting layer is 45%.The outside of belting layer extrudes sheath, and the thickness of sheath is 0.8mm.As shown in Figure 2, conductor thread core and ground wire are respectively equipped with conductor 1, insulating barrier 3, lapping layer 4 and point colour band 2.Conductor is bare copper wire, and insulating barrier is can porcelain SiClx rubber composite belt insulating barrier, and lapping layer is one side glass gold mica tape lapping layer.The outside coated insulation layer of conductor, the nominal thickness of insulating barrier is 1.4mm.The coated lapping layer in outside of insulating barrier, the thickness of lapping layer is 0.5mm, and overlapping wrapped 3 layers of lapping layer, Duplication is 45%.Divide colour band to be located at the outside of lapping layer, a point colour band is that PP high temperature divides colour band.Gap between conductor thread core, ground wire is provided with packed layer, and conductor thread core and the gap between ground wire and belting layer are provided with packed layer 5, and the material of packed layer is that silk filled by glass fibre.

The production process of the utility model flexible fire-proof cable is: and core unwrapping wire → core tension force control → copper strips active release band → copper strips tension force control → forward (FWD) location → copper strips essence cuts → and copper strips essence cuts slitter edge rolling → accurate wheeled longitudinal tubing → argon arc longitudinal seam welding → cooling and lubricating → stretching sizing → cleaning and dries up → Vortex and flow flaw detection → embossing → cleaning and dry up → metering → cable laser coding → cable takeup tension control → cable receipts winding displacement.

The utility model flexible fire-proof cable long service life, heatproof is high, and not easily aging, and security performance is good, cable can in flame normal power supply, reduce fire damage.The requirement of the utility model appropriate cable Long-term service temperature 250 DEG C, meets larger overload capacity, can use under the environment of corrosion resistance with other harmful chemicals.The fusing point of copper sheath is 1083 DEG C, can continue to keep power supply, dependable performance under the fire condition of the fusing point close to copper.

Claims

1. a flexible fire-proof cable, comprise three conductor thread cores (9), ground wire (8), belting layer (6) and sheath (7), described three conductor thread cores and ground wire twist together, the coated belting layer in outside of conductor thread core and ground wire, and the outside of belting layer extrudes sheath; It is characterized in that: described conductor thread core and ground wire are respectively equipped with conductor (1), insulating barrier (3), lapping layer (4) and point colour band (2), the outside coated insulation layer of described conductor, the coated lapping layer in outside of insulating barrier, and point colour band is located at the outside of lapping layer; Gap between described conductor thread core, ground wire is provided with packed layer (5), and conductor thread core and the gap between ground wire and belting layer are provided with packed layer.

2. according to claim a kind of flexible fire-proof cable, its irrefutable evidence is: described conductor (1) is bare copper wire or coating copper wire, described point of colour band (2) divides colour band for PP high temperature, described insulating barrier (3) is can porcelain SiClx rubber composite belt insulating barrier, and described lapping layer (4) is one side glass gold mica tape lapping layer.

3. according to claim 2 kind of flexible fire-proof cable, its irrefutable evidence is: the thickness of described insulating barrier (3) is 0.4 ~ 2.0mm; The thickness of described lapping layer (4) is 0.4 ~ 0.6mm, and overlapping wrapped 3 layers, Duplication is 40% ~ 55%.

4. according to claim a kind of flexible fire-proof cable, its irrefutable evidence is: described belting layer (6) is fluorine synthetic mica belting layer, the embossing copper sheath that described sheath (7) is argon arc longitudinal seam welding, and the material (5) of described packed layer is glass fibre filling silk.

5. according to claim 4 kind of flexible fire-proof cable, its irrefutable evidence is: described belting layer (6) wrapped Duplication is 40% ~ 55%; The thickness of described sheath (7) is 0.4 ~ 1.2mm.