CN209471760U

CN209471760U - A kind of isolation mineral insulating flexible fireproof cable

Info

Publication number: CN209471760U
Application number: CN201920525982.4U
Authority: CN
Inventors: 宋伟; 彭宇
Original assignee: ANHUI RUIZHIXING CABLE GROUP Co Ltd
Current assignee: Anhui Ruizhixing Electronic Technology Group Co ltd
Priority date: 2019-04-18
Filing date: 2019-04-18
Publication date: 2019-10-08
Anticipated expiration: 2029-04-18

Abstract

The utility model discloses a kind of isolation mineral insulating flexible fireproof cables, it include core, the core includes cable core conductor, mineral-insulated fireproof layer is coated on the outside of cable core conductor, mineral-insulated fireproof layer periphery extrudes aluminum metal separation sleeve, polyethylene layer is extruded outside aluminum metal separation sleeve, multiply core bundle strand stranding is added into alkali-free glass fibre gasket for packing, wrapped low-smoke non-halogen flame-retardant band simultaneously, it is extruded with oxygen barrier layer outside low-smoke non-halogen flame-retardant band, extrudes low smoke and zero halogen oversheath in the outside of oxygen barrier layer.The utility model filled glass fiber gasket for packing and simultaneously twisted synthesizing cable, ensure that the stabilization of cable core, and prevent the mutual abrasion between insulated wire, prolong the service life；Oxygen barrier layer can fill up entire cable core gap, and cable roundness is splendid, and curing time is long, and prevents slight crack, can play good fire insulation heat insulation and have flexibility, bending radius is small, prevents fires oxygen barrier.

Description

A kind of isolation mineral insulating flexible fireproof cable

Technical field

The utility model relates to field of cable technology more particularly to a kind of isolation mineral insulating flexible fireproof cables.

Background technique

Mineral cable refers to the cable that regular hour safe operation is able to maintain in flame combustion.Mineral cable It is widely used in skyscraper, subway, tunnel, large scale business synthesis, school, hospital gymnasium etc. and fire safety and disappears The related place of anti-lifesaving, such as important place main power supply and fire-fighting emergency service power supply line and control route.Tradition Mineral insulation fire-resisting cable, being still able to maintain after kindling the long duration continues to power, but exist not ant proof, not protection against rodents, The disadvantages of not radiation protection, cable stability is not good enough, the service life is short, and line loss is big, anti-overload ability is poor, is easily broken off, fire protecting performance Difference, safety in utilization are low.

Utility model content

The utility model aim is exactly in order to make up the defect of prior art, it is anti-to provide a kind of isolation mineral insulating flexible Thermoelectricity cable.

The utility model is achieved through the following technical solutions:

A kind of isolation mineral insulating flexible fireproof cable, includes core, and the core includes cable core conductor, It is coated with mineral-insulated fireproof layer on the outside of cable core conductor, mineral-insulated fireproof layer periphery extrudes aluminum metal separation sleeve, in aluminum metal Polyethylene layer is extruded outside separation sleeve, multiply core bundle strand stranding is added into alkali-free glass fibre gasket for packing, while wrapped low cigarette Halogen-free flameproof band is extruded with oxygen barrier layer outside low-smoke non-halogen flame-retardant band, extrudes low smoke and zero halogen oversheath in the outside of oxygen barrier layer.

The cable core conductor is as made of more copper wire bundle strands.

The mineral-insulated fireproof layer is two-layer ceramic SiClx rubber insulation tape and four layers or six stratus master tapes, is successively wrapped It overlays on the outside of cable core conductor.

The oxygen barrier layer is magnesium hydroxide or aluminium hydroxide mineral material oxygen barrier layer.

The oxygen barrier layer is that magnesia minerals fill mud.

The design of isolation mineral insulating flexible fireproof cable fire protecting performance is to follow strictly Britain's BS6387 standard, Yi Jiguo The conductor of border electrician committee IEC standard isolation mineral insulating flexible fireproof cable is twisted by strand copper wire, fire prevention Layer uses mineral insulation material.Aluminium sheath uses the soft sheath of aluminum, processes through special process, and oxygen barrier layer uses magnesia or oxygen Change aluminium ore material, outer jacket is using low smoke and zero halogen or better plastic material.The anti-thermoelectricity of isolation mineral insulating flexible Cable is domestic initiation, in the world without prototype.Product is compared compared with BTTZ series metal oversheath cable, can be accomplished continuous big Within length, 240mm the excessive disadvantage of connector can be overcome with Multi-core cable forming.

Isolation mineral insulating flexible fireproof cable aluminium replaces drawing copper tubes not only simple by main material metal pipe extrusion Technique is changed and has improved efficiency, and product cost is made to decline to a great extent (aluminium be only copper material overall cost 1/10).Use aluminum pipe Why copper pipe can be replaced, not melted under thermal-flame, have benefited from the expansion flame retardant coating of the outer extrusion of aluminum pipe: is swollen under flame invasion Swollen layer foamed solidification forms the direct injection that thick barrier has obstructed flame to aluminum pipe.Not only the integrality of aluminum pipe is protected Deposit, and make mica tape heating temperature be reduced to 600 DEG C hereinafter, mica tape insulation stability be undoubtedly improved (mica tape Insulation resistance rise with the reduction of temperature).This cable has the function of good ant proof, protection against rodents, radiation protection etc. simultaneously, protects Cable is demonstrate,proved with more stability, service life length and durability, operating temperature is low, line loss is small, anti-overload ability is strong, long service life, It is highly-safe, especially it is more suitable for applying in the project for having environmental requirement.

The utility model has the advantages that: the utility model cable core conductor is formed by multifilament conductor strand and is thoroughly done away with more Edge line twisted synthesizing cable improves pliability, the entirety degree of cable；Ceramic silicon rubber insulating tape and outer layer mica, aluminum metal every The reliability and safety that fireproof cable uses are ensured from set and oxygen barrier layer, are prevented the bending in cable construction from disturbing and are led The disconnection of the mica insulation band of cause and imperfect, improves cable fire temperature and fire-protection rating；Sky among more insulated wires In gap filled glass fiber gasket for packing and simultaneously twisted synthesizing cable, ensure that the stabilization of cable core, and prevent between insulated wire Mutual abrasion, prolong the service life；Oxygen barrier layer adds diluent to stir into pureed by magnesium oxide powder, and good fluidity can be filled out Full entire cable core gap, cable roundness is splendid, and curing time is long, and prevents slight crack, can play good fire insulation every Thermal effect simultaneously has flexibility, and bending radius is small, prevents fires oxygen barrier.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model.

Specific embodiment

As shown in Figure 1, a kind of isolation mineral insulating flexible fireproof cable, includes core, the core includes Cable core conductor 1, is coated with mineral-insulated fireproof layer 2 on the outside of cable core conductor 1, and 2 periphery of mineral-insulated fireproof layer extrudes aluminum metal Separation sleeve 3 extrudes polyethylene layer 4 outside aluminum metal separation sleeve 3, adds alkali-free glass fibre to fill out multiply core bundle strand stranding Rope 5, while wrapped low-smoke non-halogen flame-retardant band 6 are filled, oxygen barrier layer 7 is extruded with outside low-smoke non-halogen flame-retardant band 6, in oxygen barrier layer 7 Outside extrudes orange low smoke and zero halogen oversheath 8.

The cable core conductor 1 is as made of more copper wire bundle strands.

The mineral-insulated fireproof layer 2 be two-layer ceramic SiClx rubber insulation tape and four layers or six stratus master tapes, successively It is coated on the outside of cable core conductor.

The oxygen barrier layer 7 is magnesium hydroxide or aluminium hydroxide mineral material oxygen barrier layer.

The oxygen barrier layer is that magnesia minerals fill mud.

The preparation method of this mineral insulated cable includes the following steps:

First, at normal temperature, wire drawing and the contact electric resistance annealing of circular copper wire, control are carried out using continuous annealing copper wire machine drawing Annealing speed processed is 3.5-4.2m/s, and annealing temperature is 530-550 DEG C, obtains monofilament conductor；

Second, multifilament conductor is twisted at a stranded conductor, in the wrapped 2 layers of pottery in the outside of conductor using form is pressed Porcelain SiClx rubber insulation tape increases with a thickness of 0.6-0.7mm, in 4 layers of mica insulation of outer layer, increases with a thickness of 1.4-1.5mm；

Third, metal separation sleeve use aluminium bar, are cleaned by ultrasonic wave pure water tank, and temperature controls the cleaning at 60-70 DEG C Afterwards by multiple guide wheel, 2 groups of aluminium bars pass through compact wheel simultaneously and enter cavity, and cavity temperature is controlled at 500 ± 15 DEG C, and aluminium bar passes through Molten condition is presented in high temperature cavity, extrudes into constant temp cooling water slot using the punch-pin and cavity plate of inside cavity and forms rapidly, Cooling trough temperature is controlled at 10 ± 2 DEG C, after effluent trough by tension control wheel by drawing die obtain it is desired it is various outside Diameter metal separation sleeve, using traction wheel, take-up, winding displacement, sabot；

4th, layer of polyethylene insulating layer or tooth form insulating set are extruded outside metal separation sleeve；

5th, 60-70 times of outside diameter of cable clockwise direction twisted synthesizing cable of split conductor core pitch, addition glass fibre is filled out Fill rope, while wrapped low-smoke non-halogen flame-retardant band；

6th, cable core extrudes magnesium hydroxide pureed oxygen barrier layer, core internal clearance is completely filled out, while wrapped glass Fine cloth tightens；

7th, oversheath is extruded using extruding machine.

Claims

1. a kind of isolation mineral insulating flexible fireproof cable, it is characterised in that: include core, the core includes wired Core conductor is coated with mineral-insulated fireproof layer on the outside of cable core conductor, and mineral-insulated fireproof layer periphery extrudes aluminum metal separation sleeve, Polyethylene layer is extruded outside aluminum metal separation sleeve, multiply core bundle strand stranding is added into alkali-free glass fibre gasket for packing, simultaneously Wrapped low-smoke non-halogen flame-retardant band, is extruded with oxygen barrier layer outside low-smoke non-halogen flame-retardant band, the outside of oxygen barrier layer extrude low cigarette without Halogen oversheath.

2. a kind of isolation mineral insulating flexible fireproof cable according to claim 1, it is characterised in that: the core Conductor is as made of more copper wire bundle strands.

3. a kind of isolation mineral insulating flexible fireproof cable according to claim 1, it is characterised in that: the mineral Insulated waterproof layer is two-layer ceramic SiClx rubber insulation tape and four layers or six stratus master tapes.

4. a kind of isolation mineral insulating flexible fireproof cable according to claim 1, it is characterised in that: described is oxygen barrier Layer is magnesium hydroxide or aluminium hydroxide mineral material oxygen barrier layer.

5. a kind of isolation mineral insulating flexible fireproof cable according to claim 1, it is characterised in that: described is oxygen barrier Layer is that magnesia minerals fill mud.