CN208521636U - A kind of flexible environmentally friendly 110kV twisted polyethylene cable that blocks water - Google Patents

Abstract

The utility model is a kind of flexible environmentally friendly 110kV twisted polyethylene cable that blocks water, compared with traditional water repellent electric cable, while using water-blocking conductor and semi-conductive layer longitudinal water-blocking, using the radial water-resisting of aluminium-plastic tape and high density polyethylene (HDPE), the final full block-water performance for realizing cable.Traditional water repellent electric cable is using corrugated aluminum sheath, average thickness is 10 times of aluminium-plastic tape used in this patent product or more, plastic-aluminum combined band structure used by this patent product, it takes same specification commensurate weight and at least declines 10%, cable bend performance greatly promotes, and provides convenience for cable construction；Meanwhile reinforcement effect is played using wire armoring, it can be subjected to general longitudinal pulling force, therefore be suitable for vertical, vertical run.Non metallic sheath uses high density polyethylene (HDPE), further enhances block-water performance.By extruding semiconductive external electrode, cleaning, the feature of environmental protection of high-tension cable are realized.

Description

A kind of flexible environmentally friendly 110kV twisted polyethylene cable that blocks water

Technical field

The utility model relates to field of cable technology, in particular to a kind of flexible environmentally friendly 110kV crosslinked polyethylene that blocks water Cable.

Background technique

Power cable with cross-linked polyethylene insulation (hereinafter referred to as crosslinked cable), due to excellent electric property and machinery Physical property, and simple production process, portable construction, transmission capacity are big, mounting and installation and maintenance are not limited by drop conveniently, The advantages that processed, is welcome by user extensively, in particular with the fast development of Chinese national economy, the continuous depth of infrastructure Enter, electricity needs sharply increases.But Electrical Tree Aging of XLPE Insulation degree is by tree discharge, the i.e. shadow of water tree and electricity tree It rings, to also influence its service life, reducing insulation moisture content is to improve power cable with cross-linked polyethylene insulation service life One of method, in particular with the raising of voltage class, cable block-water performance is also just more and more important.

Traditional water repellent electric cable structure is to be followed successively by conductor shield outside water-blocking conductor, insulating layer, insulation screen, partly lead Resistance water layer, metal sheath layer, non metallic sheath layer, graphite linings.Currently, the common structure of high pressure water repellent electric cable has wrinkle aluminium shield Set blocks water, lead sheath blocks water, meanwhile, requirement of the country to high-tension cable environmental protection and laying is higher and higher, causes coated with graphite electric Cable is fewer and fewer, and the bending property of high-tension cable seems particularly significant.How to solve simultaneously the blocking water of high-tension cable, environmental protection and compared with Good bending property, is the emphasis of the invention of the utility model.

Summary of the invention

In order to solve the above-mentioned technical problem, the utility model is a kind of flexible environmentally friendly 110kV crosslinked polyethylene electricity that blocks water Cable, technical solution are as follows:

Water-blocking conductor (1) including being located at cable center, successively respectively includes water blocking layer (2), three-layer co-extruded from inside to outside It is layer (3), copper wire and copper strip shielding layer (4), waterstop (5), plastic-aluminum combined layer (6), steel wire armor layer (7), non-woven fabrics (8), non- Protective metal shell and extrude semi-conductive layer (9), which is characterized in that has pressed from both sides waterproofing rope, the water blocking layer among the water-blocking conductor (1) (2) be followed successively by the special more tengential belts of semiconductive and the binding strap that blocks water, the three-layer co-extruded layer (3) be followed successively by conductor shield, insulating layer, Insulation screen, the copper wire and copper strip shielding layer (4) are successively formed by copper wire armored and copper strips are wrapped, the waterstop (5) For semi-conductive buffer water-blocking band, the plastic-aluminum combined layer (6) is extruded by aluminium-plastic tape and high density polyethylene (HDPE) longitudinal wrap, institute It states steel wire armor layer (7) to be made of stainless steel wire, the non metallic sheath and to extrude semi-conductive layer (9) gathered by interior shield high density Ethylene sheath and outer shield semiconductive polyolefin shield sheath extrude.

Further, the water blocking layer (2) is followed successively by semiconductive and blocks water the special more tengential belts of binding strap and semiconductive, wrapped thickness 0.15mm semiconductive blocks water binding strap and the special more tengential belts of 0.2mm semiconductive.

Further, the copper wire and copper strip shielding layer (4) are successively by diameter 1.8mm copper wire armored and thickness 0.1mm copper With wrapped composition.

Further, the water blocking layer (2) is semiconductive longitudinal water-blocking.

Further, the diameter of the waterproofing rope is 5-8mm.

The utility model has the following beneficial effects: the utility model is a kind of flexible environmentally friendly 110kV crosslinked polyethylene that blocks water Cable while using water-blocking conductor and semi-conductive layer longitudinal water-blocking, uses plastic-aluminum combined compared with traditional water repellent electric cable The radial water-resisting of band and high density polyethylene (HDPE), the final full block-water performance for realizing cable.Traditional water repellent electric cable is using wrinkle Line aluminium sheath, average thickness are 10 times of aluminium-plastic tape used in this patent product or more, aluminium used by this patent product Plastic composite strip structure takes same specification commensurate weight and at least declines 10%, and cable bend performance greatly promotes, and applies for cable Work is provided convenience；Meanwhile reinforcement effect is played using wire armoring, it can be subjected to general longitudinal pulling force, therefore be suitable for Vertically, vertical run.Non metallic sheath uses high density polyethylene (HDPE), further enhances block-water performance.By extruding semiconductive External electrode realizes cleaning, the feature of environmental protection of high-tension cable.

Detailed description of the invention

FIG. 1 is a schematic structural view of the utility model；

As shown in Figure 1,1 water-blocking conductor, 2 water blocking layers, 3 three-layer co-extruded layers, 4 copper wires and copper strip shielding layer, 5 waterstops, 6 aluminium Composite layer, 7 steel wire armor layers are moulded, 8 non-woven fabrics and extrude semi-conductive layer at 9 non metallic sheaths.

Specific embodiment

As shown in Figure 1, the utility model is a kind of flexible environmentally friendly 110kV twisted polyethylene cable that blocks water, by height The improvement of piezoelectricity cable structure obtains a kind of good bandability, blocks water, the high-tension cable of environmental protection.The high-tension cable is to block water to lead Body 1 is located at cable center；Cable is followed successively by semiconductive water blocking layer 2, three-layer co-extruded layer 3, copper wire and copper strip shielding layer from inside to outside 4, semiconductor waterstop 5, plastic-aluminum combined layer 6, steel wire armor layer 7, non-woven fabrics 8, non metallic sheath and semi-conductive layer 9 is extruded.

Specific structure composition and function are as follows:

Water-blocking conductor 1, conventional conductor centre have pressed from both sides waterproofing rope, and the diameter of waterproofing rope is 5-8mm, constitute water-blocking conductor, rise To conductor resistance effect itself；

The outer water blocking layer 2 of water-blocking conductor is followed successively by semiconductive and blocks water the special more tengential belts of binding strap, semiconductive, wrapped thickness 0.15mm Semiconductive blocks water the special more tengential belts of binding strap, 0.2mm semiconductive, plays conductor outer layer resistance effect；

The three-layer co-extruded layer 3 of the outer water blocking layer of water-blocking conductor is followed successively by conductor shielding, insulation, insulation shielding, and conductor shielding is thick 1.2mm or so is spent, insulation thickness is 17mm or so, insulation shielding thickness 1.0mm or so.The wherein conductor shield, absolutely Edge shielded layer is made of ultra-smooth semiconductive polyolefin shielding material, plays the role of uniform field strength；Insulating layer is squeezed by Insulation Material It makes, plays the role of cable insulation；

Copper wire and copper strip shielding layer 4 are successively by diameter 1.8mm copper wire armored and thickness 0.1mm copper strips is wrapped forms.It plays The effect of electric field shielding；

Semiconductive water blocking layer outside three-layer co-extruded layer is thickness 2.0mm semi-conductive buffer water-blocking band 5.It plays three-layer co-extruded outer Layer resistance effect；

Plastic-aluminum combined layer 6 is made of aluminium-plastic tape and high density polyethylene (HDPE), plastic-aluminum combined with a thickness of 0.25mm single side Band, it is 2.5-3.5mm that high density polyethylene (HDPE) protective cover material, which extrudes jacket thickness,.Play the role of radial water-resisting；

Steel wire armor layer 7 is stainless steel wire composition, steel wire diameter 1.2-2.0mm.Primarily serve reinforcing supporting role；

Non-woven fabrics 8 plays the role of to tightening after wire armoring；Steel is pricked using the planar nonwoven cloth with a thickness of 0.2mm is counter Silk；

Non metallic sheath and to extrude semi-conductive layer 9 be by interior shield high density polyethylene (HDPE) protective cover material and outer shield semiconductive polyolefin Shield sheath material extrudes, and interior shield plays the role of waterproof, protection endothecium structure；It is outer to protect the environmental-protection function for playing conductive layer.It is interior Sheath uses high density polyethylene (HDPE) protective cover material, jacket thickness 4-5mm, oversheath semiconductive polyolefin shield sheath material, sheath With a thickness of 0.3-0.5mm.

The above-mentioned construction of cable is processed to obtain the patented product by conventional production technology mode.

This patent product is compared with traditional water repellent electric cable, while using water-blocking conductor and semi-conductive layer longitudinal water-blocking, Using the radial water-resisting of aluminium-plastic tape and high density polyethylene (HDPE), the final full block-water performance for realizing cable.Traditional blocks water For cable using corrugated aluminum sheath, average thickness is 10 times of aluminium-plastic tape used in this patent product or more.This patent Plastic-aluminum combined band structure used by product takes same specification commensurate weight and at least declines 10%, and cable bend performance is significantly It is promoted, is provided convenience for cable construction.Meanwhile reinforcement effect is played using wire armoring, general longitudinal drawing can be subjected to Power, therefore it is suitable for vertical, vertical run.Non metallic sheath uses high density polyethylene (HDPE), further enhances block-water performance.It is logical It crosses and extrudes semiconductive external electrode, realize cleaning, the feature of environmental protection of high-tension cable.

Above embodiment is the preferred embodiment of the utility model, is not the implementation for limiting the utility model With interest field, all equivalence changes and modification made according to content described in present utility model application scope of patent protection, It should be included in present utility model application the scope of the patents.

Claims (5)

1. a kind of flexible environmentally friendly 110kV twisted polyethylene cable that blocks water, the water-blocking conductor (1) including being located at cable center, by Water blocking layer (2), three-layer co-extruded layer (3), copper wire and copper strip shielding layer (4), waterstop (5), plastic-aluminum are successively respectively included from inside to outside It composite layer (6), steel wire armor layer (7), non-woven fabrics (8), non metallic sheath and extrudes semi-conductive layer (9), which is characterized in that described Waterproofing rope is pressed from both sides among water-blocking conductor (1), the water blocking layer (2) is followed successively by the special more tengential belts of semiconductive and the binding strap that blocks water, described Three-layer co-extruded layer (3) is followed successively by conductor shield, insulating layer, insulation screen, the copper wire and copper strip shielding layer (4) successively by Copper wire armored and the wrapped composition of copper strips, the waterstop (5) are semi-conductive buffer water-blocking band, and the plastic-aluminum combined layer (6) is by aluminium Plastic composite strip and high density polyethylene (HDPE) longitudinal wrap extrude, and the steel wire armor layer (7) is made of stainless steel wire, described nonmetallic Sheath and extrude semi-conductive layer (9) be extruded by interior shield high density polyethylene (HDPE) sheath and outer shield semiconductive polyolefin shield sheath and At.

2. a kind of flexible environmentally friendly 110kV twisted polyethylene cable that blocks water as described in claim 1, which is characterized in that described Water blocking layer (2) is followed successively by semiconductive and blocks water the special more tengential belts of binding strap and semiconductive, and wrapped thickness 0.15mm semiconductive blocks water binding Band and the special more tengential belts of 0.2mm semiconductive.

3. a kind of flexible environmentally friendly 110kV twisted polyethylene cable that blocks water as described in claim 1, which is characterized in that described Copper wire and copper strip shielding layer (4) are successively by diameter 1.8mm copper wire armored and thickness 0.1mm copper strips is wrapped forms.

4. a kind of flexible environmentally friendly 110kV twisted polyethylene cable that blocks water as described in claim 1, which is characterized in that described Water blocking layer (2) is semiconductive longitudinal water-blocking.

5. the flexible environmentally friendly 110kV twisted polyethylene cable that blocks water of one kind as described in any one of claim 1 ~ 4, special Sign is that the diameter of the waterproofing rope is 5-8mm.