CN208954650U

CN208954650U - A kind of self-support aerial cable

Info

Publication number: CN208954650U
Application number: CN201821654596.7U
Authority: CN
Inventors: 华建刚
Original assignee: Shanghai Wharton Electronic Technology (group) Co Ltd
Current assignee: Shanghai Wharton Electronic Technology (group) Co Ltd
Priority date: 2018-10-12
Filing date: 2018-10-12
Publication date: 2019-06-07
Anticipated expiration: 2028-10-12

Abstract

The utility model discloses a kind of self-support aerial cables, including cable body, cable body includes the conductor wire core that several are centered around metallic strength member periphery, wrapped conductor shield outside each conductor wire core, insulating layer is surrounded with outside conductor shield, insulation screen is installed outside insulating layer, damp-proof layer is surrounded with outside cable core, damp-proof layer is polyester non-woven fabric from top to bottom, water absorbent polymer, polyester non-woven fabric, metallic spacer is cased with outside damp-proof layer, cable core restrictive coating is surrounded with outside metallic spacer, the cable wire restrictive coating that Parallel Symmetric is set to its two sides is installed on cable core restrictive coating, tension bearing steel wire is equipped in cable wire restrictive coating, and tension bearing steel wire and metallic strength member are located on three angles of triangular structure at two, the utility model, which has, overcomes cable own wt to carry out resistant to bending function, guarantee that cable is integrally tied The stabilization of structure.

Description

A kind of self-support aerial cable

Technical field

The utility model relates to field of cable technology, specifically a kind of self-support aerial cable.

Background technique

Currently, with the development of science and technology, the fields such as industry are also in rapid advances, and bring is cable dosage therewith Increase, cable is the auxiliary products of transmission & distribution electric energy, signal transmission or electromagnetic conversion.Due to the field of each related electric application Popularity, have therefore, it is necessary to cable and adapt to various complex environments, aerial cable is frequent occurrence with building, trees etc. Contact, is easy to happen electric shock and short circuit accident, aerial insulated cable can effectively avoid the generation of such accident, overhead cable cross Degree is longer, is easy to happen bending and causes line fault, existing aerial cable generally requires to be mounted on bearer cable, and existing The typically no insulation of bearer cable, be easy to happen corrosion phenomenon and lightning stroke, fire incident influences the safety that cable uses, Therefore, how to improve cable service life and safety becomes a problem of current cable producer.

Summary of the invention

In view of the deficienciess of the prior art, the utility model provides a kind of self-support aerial cable.

The utility model solves technical solution used by above-mentioned technical problem: a kind of self-support aerial cable, including Cable body, the cable body include the cable core that center is equipped with metallic strength member, and cable core includes that several are centered around gold Belong to the conductor wire core of strengthening core periphery, wrapped conductor shield outside each conductor wire core, conductor shield is surrounded with absolutely outside Edge layer, insulating layer are equipped with insulation screen outside, are surrounded with damp-proof layer outside the cable core, damp-proof layer is polyester from top to bottom Non-woven fabrics, water absorbent polymer, polyester non-woven fabric, wherein water absorbent polymer is acrylic materials, the damp-proof layer housing There is metallic spacer, is surrounded with cable core restrictive coating outside metallic spacer, Parallel Symmetric is installed on cable core restrictive coating and is set to it The cable wire restrictive coating of two sides, and cable wire restrictive coating and cable core restrictive coating are an integral structure, and are held in cable wire restrictive coating equipped with tension Weight steel wire, and tension bearing steel wire and metallic strength member are located on three angles of triangular structure at two.

Preferably, the more waterproofing ropes for filling up gap, more waterproofing ropes are equipped between insulation screen and damp-proof layer By the way of twisted.

Preferably, the material of the cable wire restrictive coating and cable core restrictive coating is that PE, flame-proof PVC or low smoke and zero halogen hinder Combustible material.

Preferably, the insulating layer high-density polythene material.

Preferably, the conductor shield and insulation screen are by based on crosslinkable semiconductive power material Material extrudes.

Preferably, the conductor wire core or be single copper conductor, or be more twisted copper conductors.

Preferably, the metallic spacer is one-time formed aluminium embossing sheathed structure.

The utility model cable has the beneficial effect that:

1, the insulating layer of polythene material has the characteristics that soft matter, good mechanical property, stable structure, and insulating layer is wrapped outside There is the insulation screen of semiconductive material, when cable bend, insulation level easily causes crackle, these are all to cause shelf depreciation Factor, insulation screen has with insulating layer well to be contacted, thus avoid between conductor wire core and insulating layer occur part put The phenomenon of electricity, guarantees the electric property of cable, so that it is guaranteed that the safety and reliability of power transmission.

, the cable wire restrictive coating that Parallel Symmetric is set to its two sides is installed on cable core restrictive coating, be equipped in cable wire restrictive coating Tension bearing steel wire, and the center position of cable core is equipped with metallic strength member, the tension bearing steel wire parallel at two is formed Triangular structure, triangular structure just have preferable stability, the fixation of tension bearing steel wire when use, so that cable core is born Applied external force reach minimum, while cable bending resistance obtains maximum embody, in turn ensure cable overall structure Stabilization.

3, damp-proof layer is polyester non-woven fabric, water absorbent polymer, polyester non-woven fabric from top to bottom, and wherein water absorbent polymer is Acrylic materials, acrylic materials have an absorption speed block, heat-resist advantage as water absorbent polymer, damp-proof layer with Aluminium embossing metallic spacer cooperates, and since the gap that embossing structure is formed is independent from each other, not will form continuous water route, The gap of annular corrugated metal separation layer is filled up in water absorbent polymer water suction in damp-proof layer, prevents longitudinal leak, guarantees that cable is long Phase runs humidity resistance, while metallic spacer enhances the ability that cable bears external impact force, while can guarantee electricity again The bending resistance of cable, so that the electric property and mechanical performance of cable are all obviously improved.

Detailed description of the invention

Fig. 1 show the structural schematic diagram of the utility model cable；

Fig. 2 show the structural schematic diagram of the utility model damp-proof layer.

Appended drawing reference: 1, cable core restrictive coating；2, metallic spacer；3, damp-proof layer；4, metallic strength member；5, waterproofing rope；6, Insulation screen；7, insulating layer；8, conductor shield；9, conductor wire core；10, polyester non-woven fabric；11, water absorbent polymer；12, resist Draw bearing steel wire；13, cable wire restrictive coating.

Specific embodiment

It is further detailed to the utility model below in conjunction with embodiment and attached drawing in order to deepen the understanding to the utility model It states, which is only used for explaining the utility model, does not constitute the restriction to scope of protection of the utility model.

A kind of self-support aerial cable as shown in Fig. 1 to 2, including cable body, the cable body include in feel at ease Cable core equipped with metallic strength member 4, cable core include the conductor wire core 9 that several are centered around 4 periphery of metallic strength member, each conduction Wrapped conductor shield 8 outside core 9, conductor shield 8 are surrounded with insulating layer 7 outside, insulation shielding are equipped with outside insulating layer 7 Layer 6, the cable core are surrounded with damp-proof layer 3 outside, and damp-proof layer 3 is polyester non-woven fabric 10, water absorbent polymer 11, gathers from top to bottom Ester non-woven fabrics 10, wherein water absorbent polymer 11 is acrylic materials, is cased with metallic spacer 2 outside the damp-proof layer 3, gold Belong to and be surrounded with cable core restrictive coating 1 outside separation layer 2, the cable wire shield that Parallel Symmetric is set to its two sides is installed on cable core restrictive coating 1 Jacket layer 13, and cable wire restrictive coating 13 and cable core restrictive coating 1 are an integral structure, and tension bearing steel wire is equipped in cable wire restrictive coating 13 12, and tension bearing steel wire 12 and metallic strength member 4 are located on three angles of triangular structure at two, triangular structure has preferably Stability, have the weight for overcoming cable itself, so that aerial cable has resistant to bending ability, it is ensured that the safety of power transmission Property and reliability.

The more waterproofing ropes 5 for filling up gap are equipped between insulation screen 6 and damp-proof layer 3, more waterproofing ropes 5 are using twisted Mode, waterproofing rope 5 is by polyester fiber through dip bonding drying forming, and for fiber after adequately combing, longitudinal strength is high, With light weight, thickness is thin, tensile strength is big, good insulation preformance, the elasticity performances such as low, corrosion-free.

The material of cable wire restrictive coating 13 and cable core restrictive coating 1 is PE, flame-proof PVC or halogen-free low-smoke flame retardant material, the material With excellent environmental stress cracking resistance, the not easy to crack, damage under high and low temperature and the effect of foreign impacts power is able to maintain Superperformance.

7 high-density polyethylene material of insulating layer, the material have excellent electric property, and the soft, mechanical performance with matter Well, the features such as stable structure.

The conductor shield 8 and insulation screen 6 is extruded by the material based on crosslinkable semiconductive power material It forms.

The conductor wire core 9 is single copper conductor, or is more twisted copper conductors.

The metallic spacer 2 is one-time formed aluminium embossing sheathed structure, since the gap that embossing structure is formed is It is mutually independent, it not will form continuous water route, have effects that axial block water.

The utility model is not limited to above-mentioned preferred embodiment, and anyone should learn that the enlightenments in the utility model Under the structure change made, it is all that there is same or similar technical solution with the utility model, it is practical new to belong to this The protection scope of type.

Claims

1. a kind of self-support aerial cable, including cable body, it is characterised in that: the cable body includes that center is equipped with The cable core of metallic strength member, cable core include the conductor wire core that several are centered around metallic strength member periphery, outside each conductor wire core Wrapped conductor shield, conductor shield are surrounded with insulating layer outside, insulation screen, the cable are equipped with outside insulating layer It is surrounded with damp-proof layer outside core, damp-proof layer is polyester non-woven fabric, water absorbent polymer, polyester non-woven fabric from top to bottom, wherein absorbing water Polymer is acrylic materials, and metallic spacer is cased with outside the damp-proof layer, and cable core shield is surrounded with outside metallic spacer Jacket layer is equipped with the cable wire restrictive coating that Parallel Symmetric is set to its two sides, and cable wire restrictive coating and cable core shield on cable core restrictive coating Jacket layer is an integral structure, and tension bearing steel wire, and tension bearing steel wire and metallic strength member at two are equipped in cable wire restrictive coating On three angles of triangular structure.

2. a kind of self-support aerial cable according to claim 1, it is characterised in that: the insulation screen with it is moisture-proof The more waterproofing ropes for filling up gap are equipped between layer, more waterproofing ropes are by the way of twisted.

3. a kind of self-support aerial cable according to claim 1, it is characterised in that: the cable wire restrictive coating and cable core The material of restrictive coating is PE, flame-proof PVC or halogen-free low-smoke flame retardant material.

4. a kind of self-support aerial cable according to claim 1, it is characterised in that: the insulating layerForPolyethylene material Material.

5. a kind of self-support aerial cable according to claim 1, it is characterised in that: the conductor shield and insulation Shielded layer is extruded by the material based on crosslinkable semiconductive power material.

6. a kind of self-support aerial cable according to claim 1, it is characterised in that: the conductor wire core is single Copper conductor, or be more twisted copper conductors.

7. a kind of self-support aerial cable according to claim 1, it is characterised in that: the metallic spacer is primary Molding aluminium embossing sheathed structure.