CN220324178U - Durable bending-resistant winding drum cable for shore power supply - Google Patents

Abstract

The utility model discloses a durable bending-resistant shore power supply reel cable, which comprises three power wire cores, wherein the three power wire cores are uniformly distributed at intervals of 120 degrees in the circumferential direction through a Y-shaped polyurethane elastomer isolation core, the free ends of three bifurcation separators of the Y-shaped polyurethane elastomer isolation core outwards expand to form a fan-shaped part, a longitudinal hole is formed in the fan-shaped part, a control wire core is sleeved in a gap in the longitudinal hole, a central hole is formed in the central part of the Y-shaped polyurethane elastomer isolation core, a steel wire rope reinforcing core is sleeved in the central hole, and a fluororubber wrapping moisture-proof layer, a butyronitrile polyvinyl chloride inner sheath layer, an AFRP reinforced woven tensile layer and a butyronitrile polyvinyl chloride outer sheath layer are sequentially coated outside the Y-shaped polyurethane elastomer isolation core. The winding drum cable core has balanced and stable structure, high mechanical strength, better bending resistance, longer service life and better durability, and avoids core breakage and wire breakage.

Description

Durable bending-resistant winding drum cable for shore power supply

Technical Field

The utility model relates to the technical field of cables, in particular to a durable bending-resistant shore power supply reel cable.

Background

The reel cable for shore power supply is mainly used for providing basic power supply for ships at harbor berthing, needs to be frequently used in occasions of bending, moving and winding, is limited by flexibility and bending resistance, has poor durability, and often affects normal production order due to mechanical equipment faults caused by core breakage and wire breakage.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model aims to provide the durable bending-resistant winding drum cable for shore power supply, which has the advantages of balanced and stable cable core structure, high mechanical strength, better bending resistance, capability of avoiding core breakage and wire breakage, prolonged service life and better durability.

The utility model solves the technical problems through the following technical proposal.

The utility model provides a durable anti crooked bank electricity is reel cable for power supply, includes that three power core keeps apart core circumference 120 degrees interval equipartitions through Y shape polyurethane elastomer, the free end of three bifurcation baffle of Y shape polyurethane elastomer keeps apart the core outwards expands the formation sector towards the outside, the longitudinal bore has been seted up to the sector, the clearance cover is equipped with control core in the longitudinal bore, the central hole has been seted up to Y shape polyurethane elastomer keeps apart core central part, the centre bore cover is equipped with wire rope and strengthens the core, the outside cladding of Y shape polyurethane elastomer keeps apart the core has fluororubber around package dampproof course, butyronitrile polyvinyl chloride inner sheath layer, AFRP strengthens and weaves tensile layer and butyronitrile polyvinyl chloride oversheath layer in proper order.

Preferably, the power wire core comprises a power conductor, an ethylene propylene diene monomer rubber isolation layer and a polyvinyl chloride insulation layer.

Preferably, the power conductor is formed by concentrically twisting a plurality of tinned copper monofilaments with diameters of 0.05mm to 0.3mm.

Preferably, the control wire core comprises three insulation wire cores which are twisted together to form a wire core body, the outer portion of the wire core body is coated with an ETFE outer insulation layer, and the insulation wire core comprises an inner conductor and an XLPE insulation layer.

Preferably, the inner conductor is formed by twisting a plurality of tinned copper wires with diameters of 0.05mm to 0.08 mm.

Preferably, the clearance distance between the control wire core and the inside of the longitudinal hole is not less than 0.05mm.

Preferably, the steel wire rope reinforcing core is formed by twisting a plurality of stainless steel wires, and the diameter of the stainless steel wires is 0.1mm to 0.3mm.

Preferably, the AFRP reinforced braided tensile layer is of an inner-outer double-layer aramid yarn mutual reverse spiral winding braided structure, and the yarn diameter of the aramid yarn is 0.18mm to 0.25mm.

Preferably, the central hole is filled with insulating and lubricating silicone grease.

Preferably, thermoplastic EVA adhesive layers are arranged on the outer surface of the nitrile polyvinyl chloride inner sheath layer and the inner surface of the nitrile polyvinyl chloride outer sheath layer.

The utility model has the beneficial effects that:

1. through optimizing Y shape polyurethane elastomer isolation core structure for three power core, three control core are through Y shape polyurethane elastomer isolation core balanced distribution, and the pliability is better, and cable core structure is balanced stable, and mechanical strength is high, helps each sinle silk to bear the lateral pressure when crooked, improves the bending resistance performance of cable, slows down the local stress concentration of each sinle silk, avoids broken core broken wire to take place, increase of service life, and the durability is better.

2. The steel wire rope reinforced core has high tensile strength and excellent tensile resistance, and load stress applied to the cable core externally is unloaded to a certain extent, so that the flexibility and the tensile resistance of the cable are improved, and the durability is improved.

3. An AFRP reinforced braided tensile layer is arranged between the inner and outer PVC sheath layers, has high strength and large tensile elastic modulus, improves the bending resistance and mechanical strength of the cable sheath, protects the inner and outer sheath layers from fatigue and breakage, prolongs the service life, and has better durability.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following description will briefly explain the practical drawings required in the embodiments or the prior art, and it is obvious that the drawings described below are some embodiments of the present utility model, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

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

In the figure: the cable comprises a 1-power cable core, a 2-Y-shaped polyurethane elastomer isolation core, a 3-bifurcation baffle, a 4-sector part, a 5-longitudinal hole, a 6-control cable core, a 7-central hole, an 8-steel wire rope reinforced core, a 9-fluororubber wrapping moisture-proof layer, a 10-butyronitrile polyvinyl chloride inner sheath layer, an 11-AFRP reinforced woven tensile layer, a 12-butyronitrile polyvinyl chloride outer sheath layer, a 13-power conductor, a 14-ethylene propylene diene monomer rubber isolation layer, a 15-polyvinyl chloride insulation layer, a 16-insulation cable core, a 17-ETFE outer insulation layer, an 18-inner conductor and a 19-XLPE insulation layer.

Description of the embodiments

The utility model will now be described in further detail with reference to specific examples thereof in connection with the accompanying drawings.

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model are clearly and completely described with reference to the drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model.

As shown in fig. 1, the durable bending-resistant shore power supply reel cable in the embodiment of the utility model comprises three power wire cores 1 which are uniformly distributed at intervals of 120 degrees in the circumferential direction through a Y-shaped polyurethane elastomer isolation core 2. In one embodiment, the power core 1 comprises a power conductor 13, an ethylene propylene diene monomer rubber isolation layer 14 and a polyvinyl chloride insulation layer 15. Specifically, the power conductor 13 is formed by concentrically twisting a plurality of tinned copper monofilaments with diameters of 0.05mm to 0.3mm. The free ends of the three bifurcation baffles 3 of the Y-shaped polyurethane elastomer isolation core 2 extend outwards towards the outer side to form a fan-shaped part 4, a longitudinal hole 5 is formed in the fan-shaped part 4, a control wire core 6 is sleeved in the longitudinal hole 5 in a clearance mode, and further, the clearance distance between the control wire core 6 and the longitudinal hole 5 is not smaller than 0.05mm. In one embodiment, the control wire core 6 includes three insulated wire cores 16 twisted together to form a wire core body, the wire core body is covered with an ETFE outer insulation layer 17, and the insulated wire cores 16 include an inner conductor 18 and an XLPE insulation layer 19. Specifically, the inner conductor 18 is formed by twisting a plurality of tinned copper wires with diameters of 0.05mm to 0.08 mm. The central part of the Y-shaped polyurethane elastomer isolation core 2 is provided with a central hole 7, a steel wire rope reinforcing core 8 is sleeved in the central hole 7, and further, insulating lubricating silicone grease is filled in the central hole 7. Specifically, the steel wire rope reinforcing core 8 is formed by twisting a plurality of stainless steel wires, and the diameter of the stainless steel wires is 0.1mm to 0.3mm.

The Y-shaped polyurethane elastomer isolation core 2 is sequentially coated with a fluororubber wrapping moisture-proof layer 9, a butyronitrile polyvinyl chloride inner sheath layer 10, an AFRP reinforced braided tensile layer 11 and a butyronitrile polyvinyl chloride outer sheath layer 12, and further, the outer surface of the butyronitrile polyvinyl chloride inner sheath layer 10 and the inner surface of the butyronitrile polyvinyl chloride outer sheath layer 12 are both provided with thermoplastic EVA adhesive layers. In one embodiment, the AFRP reinforced braided tensile layer 11 is a structure in which inner and outer double-layer aramid strands are spirally wound and braided in opposite directions, and the diameter of each aramid strand is 0.18mm to 0.25mm.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. Durable anti crooked bank electricity is reel cable for power supply, characterized by: including three power core (1) through Y shape polyurethane elastomer isolation core (2) circumference 120 degree interval equipartition, the free end of Y shape polyurethane elastomer isolation core (2) three bifurcation baffle (3) outwards expands to extend towards the outside and forms sector (4), vertical hole (5) have been seted up to sector (4), the clearance cover is equipped with control core (6) in vertical hole (5), central hole (7) have been seted up in Y shape polyurethane elastomer isolation core (2) central part, the centre hole (7) endotheca is equipped with wire rope and strengthens core (8), the outside cladding of Y shape polyurethane elastomer isolation core (2) has fluororubber around package dampproof course (9), butyronitrile inner sheath layer (10), AFRP strengthens and weaves tensile layer (11) and butyronitrile polyvinyl chloride oversheath layer (12) in proper order.

2. The durable bend-resistant shore power-supplying reel cable of claim 1, wherein: the power wire core (1) comprises a power conductor (13), an ethylene propylene diene monomer rubber isolation layer (14) and a polyvinyl chloride insulation layer (15).

3. The durable bend-resistant shore power-supplying reel cable of claim 2, wherein: the power conductor (13) is formed by concentrically twisting a plurality of tinned copper monofilaments with diameters of 0.05mm to 0.3mm.

4. The durable bend-resistant shore power-supplying reel cable of claim 1, wherein: the control wire core (6) comprises three insulating wire cores (16) which are twisted together to form a wire core body, an ETFE outer insulating layer (17) is coated outside the wire core body, and the insulating wire cores (16) comprise an inner conductor (18) and an XLPE insulating layer (19).

5. The durable bend-resistant shore power-supplying reel cable of claim 4, wherein: the inner conductor (18) is formed by twisting a plurality of tinned copper wires with diameters of 0.05mm to 0.08 mm.

6. The durable bend-resistant shore power-supplying reel cable of claim 1, wherein: the clearance distance between the control wire core (6) and the inside of the longitudinal hole (5) is not smaller than 0.05mm.

7. The durable bend-resistant shore power-supplying reel cable of claim 1, wherein: the steel wire rope reinforcing core (8) is formed by twisting a plurality of stainless steel wires, and the diameter of each stainless steel wire is 0.1mm to 0.3mm.

8. The durable bend-resistant shore power-supplying reel cable of claim 1, wherein: the AFRP reinforced braided tensile layer (11) is of a structure that inner and outer double-layer aramid fiber strands are spirally wound in opposite directions, and the wire diameter of the aramid fiber strands is 0.18mm to 0.25mm.

9. The durable bend-resistant shore power-supplying reel cable of claim 1, wherein: the central hole (7) is filled with insulating lubricating silicone grease.

10. The durable bend-resistant shore power-supplying reel cable of claim 1, wherein: thermoplastic EVA adhesive layers are arranged on the outer surface of the butyronitrile polyvinyl chloride inner sheath layer (10) and the inner surface of the butyronitrile polyvinyl chloride outer sheath layer (12).