CN202042274U

CN202042274U - Aluminum-wire armored type supervoltage power cable

Info

Publication number: CN202042274U
Application number: CN2011201420187U
Authority: CN
Inventors: 张卫忠; 谈志兵; 王红军
Original assignee: Wuxi Shuguang Cable Co Ltd
Current assignee: Wuxi Shuguang Cable Co Ltd
Priority date: 2011-05-06
Filing date: 2011-05-06
Publication date: 2011-11-16
Anticipated expiration: 2021-05-06

Abstract

The utility model discloses an aluminum-wire armored type supervoltage power cable which comprises a conductor located at the center, wherein a conductor shielding layer, an insulated layer and an insulated shielding layer are sequentially arranged outside the conductor; a semi-conductive buffering tape is wrapped outside the insulated shielding layer; an aluminum-wire armored layer is arranged outside the semi-conductive buffering tape; and an outer sheath is arranged at the outmost layer of the power cable in an extruding way. In the utility model, the armored layer is adopted, so that an inner insulated cable core is not easy to damage in the production process, a plurality of armored aluminum wires can bear vertical tension force, and the suitable number of armored aluminum wires can meet requirements of the single-phase short circuit.

Description

A kind of aluminium wire armouring type ultrahigh voltage power cable

Technical field

The utility model belongs to the power cable field, specifically is a kind of aluminium wire armouring type ultrahigh voltage power cable.

Background technology

Now, China 110KV, 220KV extra-high-tension cable are used in electric power system widely.The use of extra-high-tension cable has multiple environment to lay, also different for its requirement of different environment to cable, the extra-high-tension cable of making is a pattern basically at present, waterproof construction wherein is generally wrapped waterstop as vertical waterproof, weld or extrude radially waterproof of aluminium cover conduct, such product can satisfy waterproof requirement, but not high for waterproof requirement, even need not water resistant or waterproof environment (indoor or water-less environment), it is higher that the manufacturing cost of this product just seems.In addition, in the extra-high-tension cable manufacturing field, when corrugated aluminum sheath being adopted welding or extruding,, there is the potential product defective, reduces properties of product because the improper insulated wire cores that easily causes of temperature control is damaged; In addition, extra-high-tension cable is generally had relatively high expectations, and the fault single-phase short circuit current is big, structurally also must take into account.

The utility model content

Technical problem to be solved in the utility model provides a kind of a kind of aluminium wire armouring type ultrahigh voltage power cable that bears pulling force during at water-less environment and vertical run and design, this cable is easy damaged built-in electrical insulation core not in process of production, this cable has reduced cost satisfying on the basis of serviceability, and the aluminium wire armour can also satisfy the requirement to single-phase short circuit.

Aluminium wire armouring type ultrahigh voltage power cable described in the utility model, this cable comprises the conductor that is positioned at the center, outside conductor, set gradually conductor shield, insulating barrier and insulation screen, wrapped semi-conductive buffer band outside insulation screen, the aluminium wire armour is set outside the semi-conductive buffer band, and outermost layer extrudes oversheath.

The thickness of above-mentioned semi-conductive buffer band is preferably 0.5mm.

The utility model is from saving cost and reducing the environmental pollution angle, adopt simple effective method to solve the required pulling force problem of bearing of vertical run under the condition that extra-high-tension cable lays environment satisfying, this cable also need not to adopt pitch to carry out surface treatment in process of production, not only save the energy, and can not produce any environmental pollution in the production process.This cable is owing to adopt armour, and easy damaged built-in electrical insulation core not, and multiple aluminium wire armouring in process of production can bear the pulling force of vertical direction, selects for use suitable armouring aluminium wire radical to satisfy requirement to single-phase short circuit too simultaneously.

Description of drawings

Fig. 1 is a cross section structure schematic diagram of the present utility model.

Embodiment:

As shown in Figure 1, aluminium wire armouring type ultrahigh voltage power cable described in the utility model, this cable comprises the conductor 1 that is positioned at the center, outside conductor, set gradually conductor shield 2, insulating barrier 3, insulation screen 4, semi-conductive buffer band 5, aluminium wire armour 6 is set outside semi-conductive buffer band 5, and outermost layer extrudes oversheath 7.

Operation principle of the present utility model: because extra-high-tension cable is generally had relatively high expectations; the fault single-phase short circuit current is big; in actual production process, utilize the operation principle of wire armoring machine; semi-conductive buffer band at the wrapped one deck 0.5mm thickness in insulated wire cores surface; play the effect of protection insulated wire cores, carry out the aluminium wire armouring, need not to extrude separation sleeve at the semi-conductive buffer belt surface; directly carry out the production of oversheath, not only simply but also the big cost of having saved.The multiple aluminium wire armouring can bear the pulling force of vertical direction, select for use suitable armouring aluminium wire radical to satisfy requirement too simultaneously to single-phase short circuit, only need the logical armoring machine of a Daepori to substitute aluminium press or argon arc welding machine during manufacturing, the risk of having avoided insulated wire cores to be scalded fully.

Production technology of the present utility model is: advanced column conductor 1 is stranded, carry out subsequently realizing in the cross-linking process that conductor shield 2, insulating barrier 3 and insulation screen 4 are three-layer co-extruded, wrapped afterwards semi-conductive buffer band 5, on common armoring machine, carry out the aluminium wire armouring and form aluminium wire armour 7, extrude oversheath 7 at last.

The utility model provides a kind of thinking and method of aluminium wire armouring type ultrahigh voltage power cable; the method and the approach of this technical scheme of specific implementation are a lot; the above only is a preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle, can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.The all available prior art of each component part not clear and definite in the present embodiment is realized.

Claims

1. aluminium wire armouring type ultrahigh voltage power cable, this cable comprises the conductor (1) that is positioned at the center, outside conductor, set gradually conductor shield (2), insulating barrier (3) and insulation screen (4), it is characterized in that wrapped semi-conductive buffer band (5) outside insulation screen (4), aluminium wire armour (6) is set outside semi-conductive buffer band (5), and outermost layer extrudes oversheath (7) again.

2. aluminium wire armouring type ultrahigh voltage power cable according to claim 1, the thickness that it is characterized in that semi-conductive buffer band (5) is 0.5mm.