CN217086210U - Dampproofing environment-friendly track is fire-resistant control cable for traffic - Google Patents

Abstract

The utility model discloses a moisture-proof environment-friendly fire-resistant control cable for rail transit, which comprises a plurality of multi-core control cable cores which are jointly twisted to form a cable core, the outer part of the cable core is sequentially coated with a polyester fiber plain weave lapping layer, a copper wire lapping shielding layer and an iron powder polyethylene resin longitudinal wrapping moisture-proof layer, anticorrosive inner liner of nylon, stainless steel wire armor and silane grafting crosslinking high density polyethylene oversheath, iron powder polyethylene resin indulges a packet of dampproof course and indulges the packet structure and indulge a packet of overlap joint position and be provided with the polyurethane adhesive linkage for iron powder polyethylene resin area, multicore control sinle silk includes that a plurality of fire-resistant sinle silks twist jointly and construct the line core, the outer cladding of sinle silk has AFRP to reinforce around the covering, fire-resistant sinle silk includes the inner conductor, fire-resistant winding covering and silane grafting crosslinking low density polyethylene insulating layer, silane grafting crosslinking high density polyethylene oversheath thickness is no longer than the ten tenth of external diameter. The cable has the advantages of moisture resistance, water resistance, excellent fire resistance, greenness and environmental protection.

Description

Dampproofing environment-friendly track is fire-resistant control cable for traffic

Technical Field

The application belongs to the technical field of cables, and particularly relates to a fireproof control cable for moisture-proof and environment-friendly rail transit.

Background

The rail transit has large construction scale, relates to a plurality of industries such as building, metallurgy, electric and mechanical equipment, electric wires and cables and the like, and the electric wires and cables are one of the largest supporting industries and are closely related to the development of urban rail transit. The electric cables for urban rail transit are various, for example, the electric cables mainly include direct-current traction cables, flame-retardant cables, fire-resistant cables, green cables and the like, and the signal cables mainly include signal cables for subways, control cables, communication optical cables and the like. Because of the influence of working condition environment etc., the control cable takes place to wet the phenomenon of intaking more, leads to the cable insulation layer to suffer destruction easily, reduces the electrical characteristics of cable, influences normal use, has the potential safety hazard.

SUMMERY OF THE UTILITY MODEL

This application is not enough to prior art, and the technical problem that solve provides a dampproofing environment-friendly fire-resistant control cable for track traffic, and dampproofing water blocking performance is excellent, guarantees the stable electrical characteristics of cable, has excellent fire resistance, and green can recycle.

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

The moisture-proof environment-friendly fire-resistant control cable for rail transit comprises a plurality of multi-core control wire cores which are jointly twisted to form a cable core, wherein polyester fiber plain woven cloth is sequentially coated outside the cable core to form a wrapping layer, a copper wire is wrapped with a wrapping shielding layer, an iron powder polyethylene resin longitudinal wrapping damp-proof layer, a nylon corrosion-resistant inner lining layer, a stainless steel wire armor layer and a silane grafted crosslinked high-density polyethylene outer sheath, the iron powder polyethylene resin longitudinal wrapping damp-proof layer is of an iron powder polyethylene resin tape longitudinal wrapping structure, a polyurethane bonding layer is arranged at the overlapping part of the longitudinal wrapping, the multi-core control wire cores comprise a plurality of fire-resistant wire cores which are jointly twisted to form a wire core body, the outside of the wire core is coated with an AFRP reinforced wrapping layer, the AFRP reinforced wrapping layer is formed by two to four reinforced aramid twisted wire parallel gaps, and the fire-resistant wrapping layer comprises an inner conductor, a fire-resistant wrapping layer and a silane grafted crosslinked low-density polyethylene insulating layer, the fireproof wrapping layer is of a three-layer bonding integrated structure comprising a crosslinked polyethylene resin inner layer, a mica tape core layer and a crosslinked polyethylene resin outer layer, and the thickness of the silane grafted crosslinked high-density polyethylene outer sheath is not more than one tenth of the outer diameter.

Preferably, the reinforced aramid twisted yarn is formed by integrally bonding a plurality of aramid fiber bundles and a thermoplastic polypropylene core material in a hot melting way.

Preferably, the diameter of the reinforced aramid twisted wire is 0.09mm to 0.15 mm.

Preferably, the inner conductor is formed by concentrically twisting a plurality of tinned copper monofilaments with the diameter of 0.01mm to 0.05 mm.

Preferably, the polyester fiber plain cloth wrapping layer is of a polyester fiber plain cloth spiral wrapping structure and has a thickness of 0.1mm to 0.3 mm.

Preferably, the thickness of the polyurethane adhesive layer is 30 μm to 200 μm.

Preferably, the copper wire lapping shielding layer is formed by mixing two tinned copper wires with different wire diameters and a wire diameter ratio of 0.9 to 1, and the tinned copper wires are reversely spirally wound, and the shielding density is 90 to 95 percent.

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 thickness of the nylon anticorrosion inner lining layer is not less than 0.2 mm.

Preferably, the thickness of the outer sheath of the silane grafted and crosslinked high-density polyethylene is 1.6mm to 2.2 mm.

The beneficial effect of this application:

1. the cable meets the environment-friendly design of the cable, the material of the cable core meets the ROHS instruction of European Union, the cable meets the requirement of the environment-friendly cable, harmful substances to human health are not contained, the discarded cable can be completely recycled, the environment is not polluted, and the cable is beneficial to environment protection and renewable treatment.

2. Fire-resistant sinle silk adds fire-resistant wrapping layer in silane grafting crosslinking low density polyethylene insulating layer inboard, and the fire-resistant fire-retardant characteristic of reinforcing realizes the thermal-insulated effect of excellent fire prevention, effectively slows down heat-conduction to insulating layer, realizes the fire-resistant control cable of low smoke type that the performance is excellent.

3. Indulge a packet dampproof course reinforcing dampproofing function through iron powder polyethylene resin, adopt iron powder polyethylene resin area to indulge a packet structure and indulge a packet overlap joint position and be provided with the polyurethane adhesive linkage, it is 30 mu m to 200 mu m to optimize the polyurethane adhesive linkage thickness, the effective watertight iron powder polyethylene resin area indulges the clearance that the overlap joint position of packet structure formed, realize excellent dampproofing water resistance, effectively prevent that the cable from receiving the damp water and leading to the insulating layer degradation, guarantee that the cable uses electrical characteristics is reliable and stable for a long time, reduce the potential safety hazard, increase of service life.

4. 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, inlayer stainless steel wire line footpath is less than outer stainless steel wire line footpath, helps improving the pliability and the stretch-proofing performance of armor, prevents that the broken string from taking place, reduces the installation technology degree of difficulty of laying, improves the stability of cable electrical characteristic.

Drawings

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

Description of reference numerals:

the cable comprises 1-a multi-core control wire core, 2-polyester fiber plain woven cloth wrapping layer, 3-copper wire wrapping shielding layer, 4-iron powder polyethylene resin longitudinal wrapping damp-proof layer, 5-nylon anticorrosion inner lining layer, 6-stainless steel wire armor layer, 7-silane grafted crosslinked high-density polyethylene outer sheath, 8-fire-resistant wire core, 9-AFRP reinforced wrapping layer, 10-inner conductor, 11-fire-resistant wrapping layer and 12-silane grafted crosslinked low-density polyethylene insulating layer.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the present application will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Referring to fig. 1, the moisture-proof environment-friendly fire-resistant control cable for rail transit in the embodiment of the application includes a cable core formed by co-twisting a plurality of multi-core control cable cores 1. The multi-core control wire core 1 comprises a plurality of fire-resistant wire cores 8 which are jointly twisted to form a wire core body, each fire-resistant wire core 8 comprises an inner conductor 10, a fire-resistant wrapping layer 11 and a silane grafted cross-linked low-density polyethylene insulating layer 12, and specifically, the inner conductor 10 is formed by concentrically twisting a plurality of tinned copper monofilaments with the diameters of 0.01mm to 0.05 mm. The fire-resistant wrapping layer 11 is of a three-layer bonding integrated structure including a cross-linked polyethylene resin inner layer, a mica tape core layer and a cross-linked polyethylene resin outer layer. The outside cladding of line core has AFRP to strengthen around covering 9, AFRP strengthens around covering 9 and is two to four reinforcing aramid fiber twist line parallel gaps around the package and constitute, and specifically speaking, the reinforcing aramid fiber twist line is that a plurality of aramid fiber bundles and thermoplasticity polypropylene core hot melt bond become an organic whole, and is further, reinforcing aramid fiber twist line diameter is 0.09mm to 0.15 mm.

The cable core outside cladding has polyester fiber plain weave in proper order around covering 2, the copper wire is around covering shielding layer 3, iron powder polyethylene resin indulges and wraps dampproof course 4, nylon anticorrosion inner liner 5, stainless steel wire armor 6 and silane grafting crosslinking high density polyethylene oversheath 7. The iron powder polyethylene resin longitudinal-wrapping moisture-proof layer 4 is of an iron powder polyethylene resin belt longitudinal-wrapping structure, a polyurethane adhesive layer is arranged at the overlapping part of the longitudinal wrapping, and further, the thickness of the polyurethane adhesive layer is 30-200 mu m. The thickness of the nylon anti-corrosion lining layer 5 is not less than 0.2 mm. In one embodiment, the polyester fiber plain cloth wrapping layer 2 is a polyester fiber plain cloth spiral wrapping structure and has a thickness of 0.1mm to 0.3 mm. In one embodiment, the copper wire is formed by reversely and spirally winding the tinned copper wires with two different wire diameters and a wire diameter ratio of 0.9 to 1 in a mixed mode around the shielding layer 3, and the shielding density is 90% to 95%. In one embodiment, the stainless steel wire armor layer 6 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 and crosslinked high-density polyethylene outer sheath 7 is not more than one tenth of the outer diameter, and further, the thickness of the silane grafted and crosslinked high-density polyethylene outer sheath 7 is 1.6mm to 2.2 mm.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims (10)

1. Dampproofing environment-friendly track is fire-resistant control cable for traffic, characterized by: including a plurality of multicore control sinle silks (1) transposition constitution cable core jointly, the outside cladding in proper order of cable core has polyester fiber plain weave cloth to wind covering (2), copper wire around covering shielding layer (3), iron powder polyethylene resin indulge package dampproof course (4), nylon anticorrosion inner liner (5), stainless steel wire armor (6) and silane grafting cross-linking high density polyethylene oversheath (7), iron powder polyethylene resin indulges package dampproof course (4) and indulges the package structure and indulge package overlap joint position and be provided with the polyurethane adhesive layer for iron powder polyethylene resin area, multicore control sinle silk (1) includes a plurality of fire-resistant sinle silks (8) transposition jointly and constructs the line core, the outside cladding of line core has AFRP to reinforce around covering (9) for two to four reinforce aramid fiber twist line clearances around the package constitution side by side, fire-resistant sinle silk (8) include inner conductor (10), The fireproof wrapping layer (11) is a three-layer bonding integrated structure comprising a crosslinked polyethylene resin inner layer, a mica tape core layer and a crosslinked polyethylene resin outer layer, and the thickness of the silane grafted crosslinked high-density polyethylene outer sheath (7) is not more than one tenth of the outer diameter.

2. The fire-resistant control cable for moisture-proof environment-friendly rail transit as claimed in claim 1, wherein: 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.

3. The fire-resistant control cable for moisture-proof environment-friendly rail transit as claimed in claim 1, wherein: the diameter of the reinforced aramid twisted wire is 0.09mm to 0.15 mm.

4. The fire-resistant control cable for moisture-proof environment-friendly rail transit as claimed in claim 1, wherein: the inner conductor (10) is formed by concentrically twisting a plurality of tinned copper monofilaments with the diameter of 0.01mm to 0.05 mm.

5. The fire-resistant control cable for moisture-proof environment-friendly rail transit as claimed in claim 1, wherein: the polyester fiber plain weave fabric lapping layer (2) is of a polyester fiber plain weave fabric spiral lapping structure and is 0.1mm to 0.3mm in thickness.

6. The fire-resistant control cable for moisture-proof environment-friendly rail transit as claimed in claim 1, wherein: the thickness of the polyurethane bonding layer is 30-200 μm.

7. The fire-resistant control cable for moisture-proof environment-friendly rail transit as claimed in claim 1, wherein: the copper wire lapping shielding layer (3) is formed by mixing two tinned copper wires with different wire diameters and a wire diameter ratio of 0.9-1 and spirally winding the tinned copper wires in opposite directions, and the shielding density is 90-95%.

8. The fire-resistant control cable for moisture-proof environment-friendly rail transit as claimed in claim 1, wherein: the stainless steel wire armor layer (6) 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.

9. The fire-resistant control cable for moisture-proof environment-friendly rail transit as claimed in claim 1, wherein: the thickness of the nylon anti-corrosion lining layer (5) is not less than 0.2 mm.

10. The fire-resistant control cable for moisture-proof environment-friendly rail transit as claimed in claim 1, wherein: the thickness of the silane grafted crosslinked high-density polyethylene outer sheath (7) is 1.6 mm-2.2 mm.

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