CN205428581U - Ageing resistance crosslinking polyethylene -insulated power cable - Google Patents

Abstract

The utility model discloses an ageing resistance crosslinking polyethylene -insulated power cable, including oversheath, armor, inner sheath, shielding layer, outsourcing lacing, filling layer, endocyst lacing, wire and insulating layer, oversheath bottom cover has the armor, armor bottom cover has the inner sheath, inner sheath bottom cover has the shielding layer, shielding layer bottom cover has the outsourcing lacing, the outsourcing lacing is inside to be equipped with filling layer and five the endocyst lacing, the endocyst lacing is inside to be equipped with two the wire, two the outside cover of wire has the insulating layer, this kind of power cable through the filling layer of being made by the crosslinked polyethylene material, can make power cable possess high temperature resistantly, wear -resisting and advantage such as resistant stress cracks to fine prevent the ageing of cable, prolonged power cable's life, through outsourcing lacing, endocyst lacing and insulating layer, improved the insulating properties of cable, reduced the frequency that accident takes place.

Description

A kind of aging resistance power cable with cross-linked polyethylene insulation

Technical field

This utility model relates to a kind of power cable, is specifically related to a kind of aging resistance power cable with cross-linked polyethylene insulation.

Background technology

Power cable is the cable for transmitting and distribute electric energy, and power cable is usually used in Urban Underground electrical network, electric station lead line, industrial and mining establishment's in-line power and crosses power transmission line under the sea water of river.In power circuit, cable proportion is just gradually increased.Power cable is in order to transmit and to distribute the cable product of high-power power in the basic routing line of power system, including 1-500KV and any of the above electric pressure, the power cable of various insulation.

The use of power cable existing over one hundred year history so far.1879, American inventor T.A. Edison held Corchorus olitorius L. on copper rod and is penetrated in iron pipe, is subsequently filled asphalt mixture and makes cable.This cable laying in New York, has been started underground transmission by him.Next year, Englishman's Ka Lunde invention bituminizing paper insulation power cable.1889, Englishman's S.Z. Ferranti, Sebastian Ziani de laid 10 kilovolts of oil-impregnated paper insulation cables between London and moral spy Ford.1908, Britain built up 20 kv cable nets.Power cable obtains the widest application.1911,60 kilovolts of high tension cables laid in Germany, have started the development of high tension cable.1913, German M. Huo Xishitaite was developed into individually screened cable, improves the distribution of cable internal electric field, eliminates the positive shearing stress of insulating surface, become the developing milestone of power cable.Nineteen fifty-two, 380 kilovolts of extra-high-tension cables have laid in northern power plant in Sweden, it is achieved that the application of extra-high-tension cable.1100 kilovolts, the extra-high voltage electric power cable of 1200 kilovolts has been made to the eighties.

In can being divided into by electric pressure, lv power cable (35 kilovolts and less), high tension cable (more than 110 kilovolts), extra-high-tension cable (275～800 kilovolts) and extra-high-tension cable (1000 kilovolts and more than).Additionally, also ac cable and direct current cables can be divided into by electric current system.Divide by electric pressure: 1, low-voltage cable: be applicable to the fixing exchange 50Hz that is laid in, rated voltage 3kv and following electric line be used as carry electric energy.2, mesolow cable: (refer generally to 35KV and following): polyvinyl chloride cable, polyethylene insulated cable, cross-linked polyethylene insulated cable etc..3, high tension cable: (generally 110KV and more than): PE cable and cross-linked polyethylene insulated cable etc..4, extra-high-tension cable: (275～800 kilovolts).5, extra-high-tension cable: (1000 kilovolts and more than).

Power cable uses the most extensive in the installation and connection of circuit, ensure that the safety utilization of electric power of people, but existing power cable is the most aging, the service life of cable so can be shortened, serious, when being short-circuited, can burn out cable, therefore we need to strengthen the aging resistance intensity of power cable, additionally, also wanting reinforced insulation performance, this is the problem that we are to be solved.

Utility model content

The technical problems to be solved in the utility model is to overcome existing defect, it is provided that a kind of aging resistance power cable with cross-linked polyethylene insulation, can effectively solve produced problem in background technology.

In order to solve above-mentioned technical problem, this utility model provides following technical scheme:

This utility model one aging resistance power cable with cross-linked polyethylene insulation, including oversheath, armor, inner sheath, screen layer, outer belting layer, packed layer, interior belting layer, wire, insulating barrier and radiating tube, described armor it is cased with bottom described oversheath, described inner sheath it is cased with bottom described armor, described screen layer it is cased with bottom described inner sheath, described outer belting layer it is cased with bottom described screen layer, described packed layer and five described interior belting layers it are provided with inside described outer belting layer, two described wires it are provided with inside described interior belting layer, two described wire outer cover have described insulating barrier, described oversheath, described armor, described inner sheath, it is equipped with described radiating tube inside described screen layer and outer belting layer.

It is set to 0.05mm as preferably a kind of technical scheme of this utility model, connection of staggering between described radiating tube, and caliber.

As preferably a kind of technical scheme of this utility model, inside five described interior belting layers, it is all connected with drainage thread.

As preferably a kind of technical scheme of this utility model, described packed layer is the described packed layer using cross-linking polyethylene materials to make.

As preferably a kind of technical scheme of this utility model, five described interior belting layers and described packed layer fit tightly.

As preferably a kind of technical scheme of this utility model, described surface of outer sheath scribbles Teflon.

The beneficial effects of the utility model are: this kind of aging resistance power cable with cross-linked polyethylene insulation, by the packed layer being made up of cross-linking polyethylene materials, power cable can be made to possess the advantages such as high temperature resistant, wear-resisting and stress crack resistant, pass through radiating tube again, the heat that wire produces can be got rid of, prevent heat from gathering, cable is made to soften, thus well prevent the aging of cable, extend the service life of power cable, by outer belting layer, interior belting layer and insulating barrier, substantially increase the insulating properties of cable, thus reduce the frequency that contingency occurs.

Accompanying drawing explanation

Accompanying drawing is used for providing being further appreciated by of the present utility model, and constitutes a part for description, is used for explaining this utility model, is not intended that restriction of the present utility model together with embodiment of the present utility model.In the accompanying drawings:

Fig. 1 is a kind of aging resistance power cable with cross-linked polyethylene insulation structural representation described in this utility model embodiment；

In figure: 1, oversheath；2, armor；3, inner sheath；4, screen layer；5, outer belting layer；6, packed layer；7, interior belting layer；8, wire；9, insulating barrier；10, drainage thread；11, radiating tube.

Detailed description of the invention

Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is illustrated, it will be appreciated that preferred embodiment described herein is merely to illustrate and explains this utility model, be not used to limit this utility model.

Embodiment:

nullAs shown in Figure 1，This utility model one aging resistance power cable with cross-linked polyethylene insulation，Including oversheath 1、Armor 2、Inner sheath 3、Screen layer 4、Outer belting layer 5、Packed layer 6、Interior belting layer 7、Wire 8、Insulating barrier 9 and radiating tube 11，Described armor 2 it is cased with bottom described oversheath 1，Described inner sheath 3 it is cased with bottom described armor 2，Described screen layer 4 it is cased with bottom described inner sheath 3，Described outer belting layer 5 it is cased with bottom described screen layer 4，Described outer belting layer 5 is internal is provided with described packed layer 6 and five described interior belting layers 7，Described interior belting layer 7 is internal is provided with two described wires 8，Two described wire 8 outer cover have described insulating barrier 9，Described oversheath 1、Described armor 2、Described inner sheath 3、Described screen layer 4 and outer belting layer 5 inside are equipped with described radiating tube 11，By the packed layer 6 being made up of cross-linking polyethylene materials，Power cable can be made to possess high temperature resistant、The advantages such as wear-resisting and stress crack resistant，Again by radiating tube 11，The heat that can be produced by wire 8 is got rid of，Prevent heat from gathering，Cable is made to soften，Thus well prevent the aging of cable，Extend the service life of power cable，By outer belting layer 5、Interior belting layer 7 and insulating barrier 9，Substantially increase the insulating properties of cable，Thus reduce the frequency that contingency occurs.

Stagger between described radiating tube 11 connection, and caliber is set to 0.05mm, on the premise of guaranteeing to get rid of heat produced by described wire 8, additionally it is possible to waterproof.

Five described interior belting layer 7 inside are all connected with drainage thread 10, it is possible to achieve junction box and the line of control room, convenient control.

Described packed layer 6 is the described packed layer 6 using cross-linking polyethylene materials to make, it is achieved the advantages such as high temperature resistant, the wear-resisting and stress crack resistant of cable.

Five described interior belting layers 7 and described packed layer 6 fit tightly, it is ensured that overall tight of power cable.

Described oversheath 1 surface scribbles Teflon so that it is possess wear-resisting and erosion-resisting characteristic, extends the service life of power cable.

Concrete, during use, described packed layer 6 due to time use cross-linking polyethylene materials to make, use advantages such as possessing high temperature resistant, wear-resisting and stress crack resistant, the aging of cable can well be prevented, and extend the service life of power cable, described outer belting layer 5, described interior belting layer 7 and described insulating barrier 9, substantially increase the insulating properties of cable, make cable in use, people will not be electrically shocked, and occurs unexpected.

This kind of aging resistance power cable with cross-linked polyethylene insulation, by the packed layer 6 being made up of cross-linking polyethylene materials, power cable can be made to possess the advantages such as high temperature resistant, wear-resisting and stress crack resistant, again by radiating tube 11, the heat that can be produced by wire 8 is got rid of, prevent heat from gathering, cable is made to soften, thus well prevent the aging of cable, extend the service life of power cable, by outer belting layer 5, interior belting layer 7 and insulating barrier 9, substantially increase the insulating properties of cable, thus reduce the frequency that contingency occurs.

Last it is noted that the foregoing is only preferred embodiment of the present utility model, it is not limited to this utility model, although this utility model being described in detail with reference to previous embodiment, for a person skilled in the art, technical scheme described in foregoing embodiments still can be modified by it, or wherein portion of techniques feature is carried out equivalent.All within spirit of the present utility model and principle, any modification, equivalent substitution and improvement etc. made, within should be included in protection domain of the present utility model.

Claims (6)

1. null1. an aging resistance power cable with cross-linked polyethylene insulation，Including oversheath (1)、Armor (2)、Inner sheath (3)、Screen layer (4)、Outer belting layer (5)、Packed layer (6)、Interior belting layer (7)、Wire (8)、Insulating barrier (9) and radiating tube (11)，It is characterized in that，Described oversheath (1) bottom is cased with described armor (2)，Described armor (2) bottom is cased with described inner sheath (3)，Described inner sheath (3) bottom is cased with described screen layer (4)，Described screen layer (4) bottom is cased with described outer belting layer (5)，Described outer belting layer (5) is internal is provided with described packed layer (6) and five described interior belting layers (7)，Described interior belting layer (7) is internal is provided with two described wires (8)，Two described wire (8) outer cover have described insulating barrier (9)，Described oversheath (1)、Described armor (2)、Described inner sheath (3)、Described screen layer (4) and outer belting layer (5) inside are equipped with described radiating tube (11).
2. A kind of aging resistance power cable with cross-linked polyethylene insulation the most according to claim 1, it is characterised in that connection of staggering between described radiating tube (11), and caliber is set to 0.05mm.
3. A kind of aging resistance power cable with cross-linked polyethylene insulation the most according to claim 1, it is characterised in that five described interior belting layer (7) inside are all connected with drainage thread (10).
4. A kind of aging resistance power cable with cross-linked polyethylene insulation the most according to claim 1, it is characterised in that described packed layer (6) is the described packed layer (6) using cross-linking polyethylene materials to make.
5. A kind of aging resistance power cable with cross-linked polyethylene insulation the most according to claim 1, it is characterised in that five described interior belting layers (7) and described packed layer (6) fit tightly.
6. A kind of aging resistance power cable with cross-linked polyethylene insulation the most according to claim 1, it is characterised in that described oversheath (1) surface scribbles Teflon.