CN217444106U

CN217444106U - Environment-friendly low-smoke fire-resistant armored control cable

Info

Publication number: CN217444106U
Application number: CN202220295651.8U
Authority: CN
Inventors: 罗斌; 刘书鑫; 王礼国; 蔡长威; 李清华; 吴英俊
Original assignee: Zhejiang Zhongda Yuantong Cable Technology Co ltd
Current assignee: Zhejiang Zhongda Yuantong Cable Technology Co ltd
Priority date: 2022-02-14
Filing date: 2022-02-14
Publication date: 2022-09-16
Anticipated expiration: 2032-02-14

Abstract

The utility model discloses an environment-friendly low fire-resistant armor control cable that declines, pack the core including a plurality of insulation core and PPS fibre and strand jointly and constitute the cable core, insulation core includes the inner conductor, low smoke type three-layer complex winds the package isolation layer, high temperature fire prevention area winds covering and XLPE insulating layer, the outside cladding has the nylon area in proper order around the covering of cable core, around the covering in AFRP reinforces, nonrust steel wire armor, AFRP reinforces outward around covering and silane grafting crosslinking high density polyethylene oversheath, it is a plurality of parallel spirals of strengthening the aramid fiber twisted wire around the covering outside around covering and AFRP reinforces in AFRP reinforces and constitutes, silane grafting crosslinking high density polyethylene oversheath external diameter is 28mm to 42 mm. This fire-resistant course structure is optimized to cable, has low smoke and zero halogen fire resistance, is favorable to laying installation, green, non-staining natural environment.

Description

Environment-friendly low-smoke fire-resistant armored control cable

Technical Field

The application relates to the technical field of cables, in particular to an environment-friendly low-smoke fire-resistant armored control cable.

Background

The maximum rated temperature of the conductor of the crosslinked polyethylene insulation fire-resistant control cable with rated voltage of 0.6/1kV or below is 90 ℃, the environment temperature is not lower than 0 ℃ when the cable is laid, and the minimum bending radius is 15 times of the actual outer diameter of the cable. The fire-resistant control cable produced at present can generate a large amount of heat value release during combustion due to thick insulation thickness, and the insulation layer is fused to bring harm to an inner conductor, along with the improvement of fire-proof requirements, the demand of various industries on fire-resistant cable products is developed towards the direction of high performance and high quality, the fire-resistant control cable is increasingly adopted, different process technical requirements are met with common cables in the design of the fire-resistant cable, the safety performance can be ensured only by having more reliable fire-proof function, and meanwhile, the design of a green environment-friendly cable is considered, so that the abandoned cable can be recycled, and the natural environment is not polluted.

SUMMERY OF THE UTILITY MODEL

This application is not enough to prior art, and the technical problem that solve provides a low fire-resistant armor control cable of environment-friendly cigarette, optimizes the flame retardant coating structure, has low smoke and zero halogen fire resistance, is favorable to laying installation, green, non-staining natural environment.

The present application solves the above-mentioned problems by the following technical solutions.

Environment-friendly low smoke fire-resistant armor control cable, constitute the cable core including a plurality of insulation core and PPS fibre filler core transposition jointly, pass through between the insulation core PPS fibre filler core keeps the spacing distance, insulation core includes inner conductor, low smoke type three-layer complex around package isolation layer, high temperature fire prevention area around covering and XLPE insulating layer, low smoke type three-layer complex includes polyester non-woven fabrics basic unit, nylon resin layer and aromatic polyimide isolation layer from interior to exterior in proper order around package isolation layer, high temperature fire prevention area is cross-linked polyethylene resin inlayer, mica tape sandwich layer and cross-linked polyethylene resin skin three-layer bonding body structure around the covering in proper order, the cable core outside has the nylon area in proper order around covering, AFRP strengthens interior covering, stainless steel wire armor around covering, AFRP and strengthens outer covering and silane graft cross-linked high density polyethylene oversheath around covering, AFRP strengthens interior covering and AFRP strengthens outer covering and is the parallel spiral of a plurality of reinforced aramid fiber twisted wires construct around the covering And the outer diameter of the silane grafted and crosslinked high-density polyethylene outer sheath is 28mm to 42 mm.

Preferably, the number of the insulated wire cores is 20 to 35.

Preferably, the reinforced aramid twisted yarn is formed by a plurality of aramid fiber bundles and a thermoplastic polypropylene core material which are thermally fused and adhered into a whole and are coated with a PET resin layer together.

Preferably, the inner conductor is formed by stranding a plurality of tinned copper monofilaments with the wire diameter of 0.05mm to 0.08 mm.

Preferably, the winding direction of the AFRP reinforced inner wrapping layer is opposite to that of the AFRP reinforced outer wrapping layer.

Preferably, the nylon tape lapping layer is of a nylon tape lapping structure, and the lapping rate is 15% to 20%.

Preferably, the stainless steel wire armor layer is formed by weaving inner and outer double-layer stainless steel wires in a reverse spiral winding mode, and the diameter of the inner stainless steel wire is smaller than that of the outer stainless steel wire.

Preferably, the wrapping layer thickness of the nylon belt is 0.2mm to 0.4 mm.

Preferably, the thickness of the polyester non-woven fabric base layer is 0.05mm to 0.08mm, the thickness of the nylon resin layer is 0.08mm to 0.1mm, and the thickness of the aromatic polyimide isolation layer is 0.02mm to 0.04 mm.

Preferably, the thickness of the outer sheath of the silane grafted and crosslinked high-density polyethylene is 1.8mm to 2.2 mm.

The beneficial effect of this application:

1. the cable meets the requirement of environmental-friendly cables, does not contain harmful substances to human health, does not release smoke and toxic gas in burning flame, can be completely recycled, has no pollution to the environment, and is beneficial to environmental protection and renewable treatment. Insulating sinle silk adopts the compound package isolation layer that winds of low cigarette type three-layer, effective separation copper inner conductor takes place direct contact around covering and insulating layer with high temperature fireproof belt, prevent that the copper ion diffusion from taking place to the harmful phenomenon of copper that insulating material caused, polyester non-woven fabrics basic unit, nylon resin layer and aromatic polyimide isolation layer three-layer body structure, when taking place the cable burning of catching fire, the nylon resin layer can be polyester non-woven fabrics basic unit oxygen suppliment and promote polyester non-woven fabrics basic unit fully combustion, aromatic polyimide isolation layer has the effect of keeping apart the flue gas, effectively prevent the burning flue gas from scattering from the cable is inside, realize the fire-resistant control cable of low cigarette type that the performance is excellent.

2. The high-temperature fireproof belt is added on the inner side of the XLPE insulating layer to realize a better fireproof and heat-insulating effect around the cladding, the heat conduction to the insulating layer is effectively slowed down, the PPS fiber filling core material has good heat resistance and high mechanical strength, the fireproof and flame-retardant characteristics are enhanced, the heat conduction time to the inside is effectively prolonged, the internal temperature is reduced, and the safe and normal operation of the cable is ensured.

3. Guarantee mechanical strength through the stainless steel wire armor, adopt inside and outside double-deck stainless steel wire each other to be reverse spiral winding and weave the structure, and simultaneously, the stainless steel wire armor in the outside increases respectively in the AFRP reinforces around covering and AFRP and reinforces the outer covering of winding, be of value to the local stress concentration that reduces the armor, reduce the moment of torsion power when crooked, the pliability and the stretch-proofing performance that help improving the armor, prevent disconnected core broken string and insulating layer tear the emergence, reduce the installation process degree of difficulty, improve the stability of cable electrical characteristic, the fail safe nature of improvement cable, and the service life is prolonged.

Drawings

Fig. 1 is a schematic cross-sectional structure diagram of an embodiment of the present application.

Description of reference numerals:

1-an insulating wire core, 11-an inner conductor, 12-a low-smoke three-layer composite wrapping isolation layer, 13-a high-temperature fireproof tape wrapping layer, 14-an XLPE insulating layer, a 2-PPS fiber filled core material, a 3-nylon tape wrapping layer, a 4-AFRP reinforced inner wrapping layer, a 5-stainless steel wire armor layer, a 6-AFRP reinforced outer wrapping layer and a 7-silane grafted and crosslinked high-density polyethylene outer sheath.

Detailed Description

The terminology used in the description of the embodiments of the present application is for the purpose of describing particular embodiments of the present application only and is not intended to be limiting of the application, as the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

Referring to fig. 1, the environment-friendly low-smoke fire-resistant armored control cable of the embodiment of the application comprises a plurality of insulating wire cores 1 and a PPS fiber filling core material 2, wherein the insulating wire cores 1 are twisted together to form a cable core, the PPS fiber filling core material 2 keeps a spacing distance, and the number of the insulating wire cores 1 is 20-35. Insulating sinle silk 1 includes that inner conductor 11, low smoke type three-layer complex wind covering isolation layer 12, high temperature fire prevention area around covering 13 and XLPE insulating layer 14, specific saying so, inner conductor 11 is that a plurality of footpaths are 0.05mm to 0.08mm tinned copper monofilament transposition formation. The low-smoke three-layer composite wrapping isolation layer 12 sequentially comprises a polyester non-woven fabric base layer, a nylon resin layer and an aromatic polyimide isolation layer from inside to outside, and further the thickness of the polyester non-woven fabric base layer is 0.05mm to 0.08mm, the thickness of the nylon resin layer is 0.08mm to 0.1mm, and the thickness of the aromatic polyimide isolation layer is 0.02mm to 0.04 mm. The high-temperature fireproof belt winding covering layer 13 is of a three-layer bonding integrated structure of a crosslinked polyethylene resin inner layer, a mica tape core layer and a crosslinked polyethylene resin outer layer.

The cable core is sequentially coated with a nylon tape wrapping layer 3, an AFRP reinforced inner wrapping layer 4, a stainless steel wire armor layer 5, an AFRP reinforced outer wrapping layer 6 and a silane grafted cross-linked high-density polyethylene outer sheath 7. In one embodiment, the nylon tape lapping layer 3 is a nylon tape lapping structure, the lapping rate is 15% to 20%, and the thickness of the nylon tape lapping layer 3 is 0.2mm to 0.4 mm. The AFRP reinforced inner wrapping layer 4 and the AFRP reinforced outer wrapping layer 6 are formed by spirally wrapping a plurality of reinforced aramid twisted wires in parallel, and further, the winding direction of the AFRP reinforced inner wrapping layer 4 is opposite to that of the AFRP reinforced outer wrapping layer 6. Specifically, the reinforced aramid twisted wire is formed by hot-melting and bonding a plurality of aramid fiber bundles and a thermoplastic polypropylene core material into a whole and coating a PET resin layer together. In one embodiment, the stainless steel wire armor layer 5 is formed by weaving inner and outer stainless steel wires in a reverse spiral winding manner, and the diameter of the inner stainless steel wire is smaller than that of the outer stainless steel wire. The thickness of the silane grafted cross-linked high-density polyethylene outer sheath 7 is 1.8 mm-2.2 mm. The outer diameter of the silane grafted cross-linked high-density polyethylene outer sheath 7 is 28mm to 42 mm.

Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present application, and are used to illustrate the technical solutions of the present application, but not to limit the technical solutions, and the scope of the present application is not limited to the above-mentioned embodiments, although the present application is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope disclosed in the present application; such modifications, changes or substitutions do not depart from the spirit and scope of the exemplary embodiments of the present application, and are intended to be covered by the scope of the present application.

Claims

1. Environment-friendly low fire-resistant armoured control cable of cigarette, characterized by: including a plurality of insulation core (1) and PPS fibre packing core (2) transposition constitution cable core jointly, pass through between insulation core (1) PPS fibre packing core (2) keep spacing distance, insulation core (1) include inner conductor (11), low smoke type three-layer complex around package isolation layer (12), high temperature fire prevention area around covering (13) and XLPE insulating layer (14), low smoke type three-layer complex includes polyester non-woven fabric basic unit, nylon resin layer and aromatic group polyimide isolation layer from interior to exterior in proper order around package isolation layer (12), high temperature fire prevention area is around covering (13) for crosslinked polyethylene resin inlayer, mica tape sandwich layer and crosslinked polyethylene resin outer three-layer bonding body structure, the cable core outside has the nylon area in proper order around covering (3), AFRP and strengthens interior around covering (4), stainless steel wire armor (5), AFRP and strengthens outward around covering (6) and silane grafting crosslinked high density polyethylene oversheath (7), the AFRP reinforced inner wrapping layer (4) and the AFRP reinforced outer wrapping layer (6) are formed by parallel and spiral wrapping of a plurality of reinforced aramid twisted wires, and the outer diameter of the silane grafted and crosslinked high-density polyethylene outer sheath (7) is 28-42 mm.

2. The environment-friendly low-smoke fire-resistant armored control cable of claim 1, characterized in that: the number of the insulated wire cores (1) is 20-35.

3. The environment-friendly low-smoke fire-resistant armored control cable of claim 1, characterized in that: the reinforced aramid twisted wire is formed by hot-melting and bonding a plurality of aramid fiber bundles and a thermoplastic polypropylene core material into a whole and coating a PET resin layer together.

4. The environment-friendly low-smoke fire-resistant armored control cable according to claim 1, characterized in that: the inner conductor (11) is formed by stranding a plurality of tinned copper monofilaments with the wire diameter of 0.05mm to 0.08 mm.

5. The environment-friendly low-smoke fire-resistant armored control cable according to claim 1, characterized in that: the winding direction of the AFRP reinforced inner winding cladding (4) is opposite to that of the AFRP reinforced outer winding cladding (6).

6. The environment-friendly low-smoke fire-resistant armored control cable according to claim 1, characterized in that: the nylon tape lapping layer (3) is a nylon tape lapping and covering structure, and the lapping rate is 15% -20%.

7. The environment-friendly low-smoke fire-resistant armored control cable of claim 1, characterized in that: the stainless steel wire armor layer (5) is of a structure that inner and outer double-layer stainless steel wires are mutually reversely spirally wound and woven, and the diameter of the inner stainless steel wire is smaller than that of the outer stainless steel wire.

8. The environment-friendly low-smoke fire-resistant armored control cable according to claim 1, characterized in that: the nylon tape wrapping layer (3) is 0.2mm to 0.4mm thick.

9. The environment-friendly low-smoke fire-resistant armored control cable according to claim 1, characterized in that: the thickness of the polyester non-woven fabric base layer is 0.05mm to 0.08mm, the thickness of the nylon resin layer is 0.08mm to 0.1mm, and the thickness of the aromatic polyimide isolation layer is 0.02mm to 0.04 mm.

10. The environment-friendly low-smoke fire-resistant armored control cable according to claim 1, characterized in that: the thickness of the silane grafted cross-linked high-density polyethylene outer sheath (7) is 1.8 mm-2.2 mm.