CN213400656U

CN213400656U - Damp-proof wire and cable

Info

Publication number: CN213400656U
Application number: CN202021760665.XU
Authority: CN
Inventors: 林洪英
Original assignee: Fujian Dajiang Cable Technology Co ltd
Current assignee: Fujian Dajiang Cable Technology Co ltd
Priority date: 2020-08-21
Filing date: 2020-08-21
Publication date: 2021-06-08
Anticipated expiration: 2030-08-21

Abstract

The utility model discloses a damp-proof wire cable, which comprises a cable body, wherein a plurality of groups of wires are arranged in the cable body; the outer side of the tinned copper wire is sequentially wrapped with an insulating layer, a shielding layer, a semi-conductive resistance layer, a flame-retardant layer and a sheath layer; the lead is embedded and fixed in the separation frame, and a filler is arranged in a gap between the lead and the separation frame; the outer side of the separation frame is wrapped with a PVC wrapping tape, the outer side of the PVC wrapping tape is provided with an inner liner layer, and the outer side of the inner liner layer is sequentially wrapped with two layers of magnesium aluminum alloy steel wire armoring, a waterproof layer, a high-density crosslinked polyethylene layer and a polyurea protective layer; the utility model is provided with the shielding layer on the conductor, which improves the stability of the cable when in use; the double-layer steel wires are arranged in the cable and wound in opposite directions, so that the tensile property of the cable is improved; the outer layer of the cable is provided with a polyurethane waterproof coating, a high-density crosslinked polyethylene layer and a polyurea protective layer; thereby ensuring the high temperature resistance, corrosion resistance and waterproofness of the outer layer of the cable.

Description

Damp-proof wire and cable

Technical Field

The utility model relates to a cable manufacture technical field specifically is a damp-proofing wire and cable.

Background

The power cable is used for transmitting and distributing electric energy, is commonly used for urban underground power grids, power station leading-out lines, power supply inside industrial and mining enterprises and transmission lines under river-crossing seawater, is gradually increased in proportion in the power line, is used for transmitting and distributing in a trunk line of a power system, is increased along with the development of the society, and is required to have larger and larger current-carrying capacity and larger cross section of a conductive core of a high-voltage power cable.

The cable is usually required to bear a large tensile acting force, so that the structural strength, the high temperature resistance, the corrosion resistance, the waterproofness, the tensile resistance and the like of the cable have high requirements, particularly the waterproof performance, when a water body invades into the cable, the aging of the cable is accelerated on one hand, and on the other hand, serious safety accidents such as electric leakage and the like of the cable are caused; therefore, in view of the current situation, there is an urgent need to develop a new cable structure with good moisture-proof and waterproof capabilities to meet the needs of practical use.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a simple to operate, rational in infrastructure's dampproofing wire and cable to overcome prior art's weak point.

In order to achieve the above object, the utility model provides a following technical scheme: a damp-proof wire cable comprises a cable body, wherein a plurality of groups of conducting wires are arranged in the cable body; the lead consists of a plurality of tinned copper wires which are twisted in a complex mode, and an insulating layer, a shielding layer, a semi-conductive resistance layer, a flame retardant layer and a sheath layer are sequentially wrapped on the outer sides of the tinned copper wires; the lead is embedded and fixed in the separation frame, and a filler is arranged in a gap between the lead and the separation frame; the outside parcel of spacer has PVC around the band, PVC is provided with the inner liner around the band outside, the inner liner outside parcel has two-layer magnalium alloy steel silk armor, waterproof layer, high density crosslinked polyethylene layer and polyurea inoxidizing coating in proper order.

Preferably, an anti-abrasion layer is arranged between the two layers of magnesium-aluminum alloy steel wire armoring, and the anti-abrasion layer is a polypropylene fiber layer.

Preferably, the steel wires of the two layers of magnesium-aluminum alloy steel wire armor are wound in opposite directions.

Preferably, the waterproof layer is a polyurethane waterproof coating, the flame-retardant layer is a low-smoke low-halogen flame-retardant material, and the semi-conductive resistance layer is composed of high-strength polyester non-woven fabric, high-water-absorption resin and a semi-conductive adhesive.

Preferably, the filler arranged on the separation frame is a flame-retardant polypropylene filling rope, and the separation frame is made of a PET plastic material.

Preferably, the number of the partition frame mounting grooves may be set according to the number of the wires.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model has the advantages that each conductor is provided with the shielding layer, so that the shielding effect is better, and the stability of the cable in use is improved; the cable is internally provided with double layers of steel wires and wound in opposite directions, so that the tensile resistance of the cable is improved, and the situation that the cable is broken when being installed is prevented.

2. The outer layer of the cable is provided with a polyurethane waterproof coating, a high-density crosslinked polyethylene layer and a polyurea protective layer; the polyurea and the high-density crosslinked polyethylene have the characteristics of corrosion resistance, water resistance, wear resistance, heat resistance and the like, so that the high-temperature resistance, the corrosion resistance and the water resistance of the outer layer of the cable are ensured; the polyurethane waterproof coating has the characteristics of high strength, high elongation, good water resistance and the like, so that when the high-density crosslinked polyethylene layer and the polyurea protective layer on the outer layer of the cable are damaged, moisture in the air is cured after contacting, and a firm and tough seamless integral waterproof film is formed on the surface; thereby improving the service life of the cable in use.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is the cross section structure schematic diagram of the three-core moisture-proof cable of the utility model.

Fig. 2 is a schematic diagram of the cross-sectional structure of the wire of the present invention.

Fig. 3 is the cross-sectional structure schematic diagram of the four-core moisture-proof cable of the present invention.

Fig. 4 is an enlarged schematic view of the outer structure of the cable of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

the composite material comprises a 1-polyurea protective layer, a 2-high-density crosslinked polyethylene layer, a 3-magnesium aluminum alloy steel wire armor, a 4-abrasion-proof layer, a 5-inner lining layer, a 6-PVC wrapping tape, 7-wires, 8-separation frames, 9-fillers, 10-waterproof layers, 71-sheath layers, 72-tinned copper wires, 73-flame-retardant layers, 74-semiconductive resistance layers, 75-insulating layers and 76-shielding layers.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a damp-proof wire cable comprises a cable body, wherein a plurality of groups of conducting wires 7 are arranged in the cable body; the lead 7 is formed by twisting a plurality of tinned copper wires 72 in a complex manner, and an insulating layer 75, a shielding layer 76, a semi-conductive resistance layer 74, a flame retardant layer 73 and a sheath layer 71 are sequentially wrapped on the outer side of each tinned copper wire 72; the lead 7 is embedded and fixed in the separation frame 8, and a filler 9 is arranged in a gap between the lead 7 and the separation frame 8; the outside parcel of spacer 8 has PVC around band 6, PVC is provided with inner liner 5 around band 6 outside, 5 outsides of inner liner wrap up in proper order and have two-layer magnesium aluminum alloy steel wire armor 3, waterproof layer 10, high density crosslinked polyethylene layer 2 and polyurea inoxidizing coating 1.

Preferably, an anti-abrasion layer 4 is arranged between the two layers of magnesium-aluminum alloy steel wire armors 3, and the anti-abrasion layer 4 is a polypropylene fiber layer.

Preferably, the steel wires of the two layers of the magnesium-aluminum alloy steel wire armor 3 are wound in opposite directions.

Preferably, the waterproof layer 10 is a polyurethane waterproof coating, the flame retardant layer 73 is a low-smoke low-halogen flame retardant material, and the semi-conductive layer 74 is composed of a high-strength polyester non-woven fabric, a super absorbent resin, and a semi-conductive adhesive.

Preferably, the filler 9 arranged on the separation frame 8 is a flame-retardant polypropylene filling rope, and the separation frame 8 is made of a PET plastic material.

Preferably, the number of the installation grooves of the separation frame 8 can be set according to the number of the wires 7.

The polyurea material and the high-density crosslinked polyethylene have the characteristics of corrosion resistance, water resistance, wear resistance, heat resistance and the like, so that the high-temperature resistance, the corrosion resistance and the water resistance of the outer layer of the cable are ensured; the polyurethane waterproof coating has the characteristics of high strength, high elongation, good water resistance and the like, so that when the high-density crosslinked polyethylene layer and the polyurea protective layer on the outer layer of the cable are damaged, moisture in the air is cured after contacting, and a firm and tough seamless integral waterproof film is formed on the surface; the cable is internally provided with double layers of steel wires and wound in opposite directions, so that the tensile resistance of the cable is improved, and the situation that the cable is broken when being installed is prevented.

The lead is embedded and installed in the installation groove of the separation frame 8, the flame-retardant polypropylene filling rope is filled between the lead 7 and the separation frame 8, the separation frame 8 can play a role in supporting a cable structure, and when the outer layer of a certain position is completely damaged, the moisture can be prevented from entering other installation grooves; thereby improving the service life of the cable.

Wherein, the outer side of the tinned copper wire 72 is sequentially wrapped with an insulating layer 75, a shielding layer 76, a semi-conductive resistance layer 74, a flame retardant layer 73 and a sheath layer 71; the semi-conductive layer 74 is composed of high-strength polyester non-woven fabric, super absorbent resin and semi-conductive adhesive; the waterproof wire has the characteristics of good waterproof performance, no corrosiveness and the like, so that the waterproof and moistureproof performance of the wire monomer is improved.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A moisture-proof wire cable comprises a cable body, and is characterized in that: a plurality of groups of conducting wires (7) are arranged in the cable body; the lead (7) is formed by twisting a plurality of tinned copper wires (72) in a compound mode, and an insulating layer (75), a shielding layer (76), a semi-conductive resistance layer (74), a flame retardant layer (73) and a sheath layer (71) are sequentially wrapped on the outer side of each tinned copper wire (72); the lead (7) is embedded and fixed in the separation frame (8), and a filler (9) is arranged in a gap between the lead (7) and the separation frame (8); the outside parcel of partition frame (8) has PVC around band (6), PVC is provided with inner liner (5) around band (6) outside, inner liner (5) outside parcel in proper order has two-layer magnesium aluminum alloy steel wire armor (3), waterproof layer (10), high density crosslinked polyethylene layer (2) and polyurea inoxidizing coating (1).

2. A moisture resistant electrical wire cable as claimed in claim 1, wherein: an anti-abrasion layer (4) is arranged between the two layers of magnesium-aluminum alloy steel wire armoring (3), and the anti-abrasion layer (4) is a polypropylene fiber layer.

3. A moisture resistant electrical wire cable as claimed in claim 2, wherein: the steel wires of the two layers of magnesium-aluminum alloy steel wire armors (3) are wound in opposite directions.

4. A moisture resistant electrical wire cable as claimed in claim 1, wherein: the waterproof layer (10) is a polyurethane waterproof coating, and the flame-retardant layer (73) is a low-smoke low-halogen flame-retardant material.

5. A moisture resistant electrical wire cable as claimed in claim 1, wherein: the filler (9) arranged on the separation frame (8) is a flame-retardant polypropylene filling rope, and the separation frame (8) is made of a PET plastic material.

6. A moisture resistant electrical wire cable as claimed in claim 5, wherein: the number of the mounting grooves of the separation frame (8) can be set according to the number of the wires (7).