CN103887009A

CN103887009A - Environment-friendly type ocean power cable

Info

Publication number: CN103887009A
Application number: CN201410091882.7A
Authority: CN
Inventors: 张卫忠; 余旭成
Original assignee: Wuxi Shuguang Cable Co Ltd
Current assignee: Wuxi Shuguang Cable Co Ltd
Priority date: 2014-03-13
Filing date: 2014-03-13
Publication date: 2014-06-25

Abstract

The invention discloses an environment-friendly type ocean power cable which comprises a cable core. The cable core is formed by a water resisting body, a semiconductive shielding layer, an ultra-clean insulating layer and an ultra-smooth insulation shielding layer, wherein the semiconductive shielding layer, the ultra-clean insulating layer and the ultra-smooth insulation shielding layer are arranged outside the water resisting body in sequence. A semiconductive buffering water resisting layer, a lead sheath, an aluminum alloy wire armor layer, a semiconductive buffering layer, a zinc-coated steel wire armor layer and a polypropylene rope layer wrap outside the cable core in sequence, and an outer sheath is further arranged on the outer most layer of the cable core in a pressing wrapping mode. According to the environment-friendly type ocean power cable, high-dielectric-property and super-purified insulating materials are selected as raw materials, the mode of gravity blanking is adopted in a hundred-grade purification room, the raw materials are prevented from any external tiny pollution completely, the facts that a three-layer co-extrusion process is clean and the insulating layer is free of any tiny impurities are guaranteed fully, and the risk that the cable is broken in cable operation is reduced.

Description

A kind of environment-friendly type marine power cable

Technical field

The invention belongs to power cable field, be specifically related to a kind of environment-friendly type marine power cable.

Background technology

China is an ocean big country, have marine site and 18000 kilometers of long coastlines of more than 300 ten thousand square kilometres, coastally be distributed with more than 6000 island, offshore oil field and natural gas are richly stored with on continental shelf, shallow sea, coastal is again China well-developed region, and domestic coastal island development is badly in need of electricity consumption, and owing to building, power station cost is high, the cycle is long, add the factors such as fuel supply bottleneck, the input city of this product will bring great convenience and raise the efficiency the power demands on middle-size and small-size island.

There is wide market and application prospect in Present Domestic, international submarine cable, the following several market of major embodiment:

1. coastal cities and market, island

Submarine cable is electric power and the important transmission means of communicating by letter between offshore islands and city.Between China coast city, between between island and island and continent, 2006 annual consumptions of required photoelectric composite submarine cable and seabed crosslinked cable are about 800km, are more than 3000km to the year two thousand twenty demand-expected amount.

2. offshore oil platform is used submarine cable market

It is reported, on all kinds of every offshore oil platforms, the consumption of cable is: jack-up unit 150km, semisubmersible platform 180km, production platform 200km, production platform 200km, accommodation platform 100km.

3. the submerged cable market such as rivers and lakes

Due to the needs of transformation rivers, lake and reservoir dam, submerged cable is more and more widely used, and in China, is mainly distributed in the markets such as the Changjiang river, the Yellow River, Nujiang, the Qiantang River, the Zhujiang River.

4. Oversea wind power generation and transmission of electricity submarine cable

Building marine wind electric field is the important directions of international new forms of energy development, also by " direction in direction " that be China's Wind Power Generation Industry development.The existing land wind energy turbine set of nearly various schools of thinkers of China, but Wind Power Plant at Sea construction is just at the early-stage.For submarine cable, its at sea wind power generation and transmission of electricity on application have wide market prospects.

5. the international market such as Southeast Asia

Southeast Asian countries does not also possess the production capacity of submarine cable as Japan, Korea S, Philippine, Malaysia, Indonesia, Vietnam, Thailand, Burma etc., many local zone property submarine cable engineerings are introduced photoelectric composite submarine cable from West Europe, expend huge.Comparatively speaking, the submarine cable manufacturing enterprise of China has the advantage of cost and region.

At present; the deficiency that prior art exists is that submarine cable is shorter useful life; do not reach the very high requirement of electric property and mechanical protection aspect, on raw material, select and keep away unavoidable raw material completely and be subject to extraneous any tiny pollution, can't resolve cable operation and puncture the problems such as risk.

Summary of the invention

The object of this invention is to provide a kind of useful life longer; electric property and mechanical protection performance are strong; corrosion resistance and good; flexible environment-friendly type marine power cable; this cable selects high dielectric property ultrapurification insulating material by adopting the mode of gravity blanking in hundred grades of purification rooms on raw material; avoid raw material to be subject to extraneous any tiny pollution completely, fully ensured that three-layer co-extruded process is clean and insulating barrier is interior without any trickle impurity, reduced cable and moved the risk puncturing.

A kind of environment-friendly type marine power cable of the present invention, comprises cable core, and this cable core forms by organizing water body and being extruded in successively the external semiconductive shielding layer that blocks water, ultra-clean insulating barrier, ultra-smooth insulation screen; Be coated with successively semi-conductive buffer water blocking layer, lead sheath, aluminum-alloy wire armour, semi-conductive buffer layer, zinc-coated wire armour and polypropylene rope layer outward at cable core, cable core outermost also extrudes oversheath.

Further improve, the described body that blocks water adds the water blocking yarn that block-water performance is strong to twist into forming while adopting layering compact conductor simultaneously.

Further improve, described oversheath adopts polythene material.

Beneficial effect of the present invention is:

1, the present invention adopts the water blocking yarn that vertical bag function admirable is pressed in layering to make the monofilament gap in conductor completely closely knit in the time that the carrier of electric energy transmitting is produced, and water cannot be entered and and stop its flow channel.

2, adopt and extrude lead sheath in radial direction, the advantage of lead sheath is good seal performance, can prevent that moisture content or moisture from entering cable floor and causing cable to use for a long time the life-span that produces water tree and affect cable; Fusing point is low, can be expressed at a lower temperature on cable insulation; Corrosion resistance and good, flexible;

3, aspect anti-outside destroy, adopt double armature structure, different from traditional armouring is that double armature structure adopts different armoring materials, and internal layer adopts nonmagnetic aluminum-alloy wire, outer adopts zinc-coated wire to carry out double-deck oppositely armouring not only to reduce can also need not the reflux benefit of conductor of armouring magnetic loss to reach simultaneously.Simultaneously the strand of two-layer armouring also more can stop anchor in deep-sea, bury the sharp edge that plough and rock etc. bring underground and thrust to difference.Ensure that cable is not subject to the damage of external strength in seabed, guarantee normal operation.

Brief description of the drawings

Fig. 1 is structural representation of the present invention.

Embodiment

As shown in Figure 1, a kind of environment-friendly type marine power cable of the present invention, comprises cable core, and this cable core forms by organizing water body 1 and being extruded in successively the semiconductive shielding layer 2, ultra-clean insulating barrier 3, the ultra-smooth insulation screen 4 that block water outside body 1; Be coated with successively semi-conductive buffer water blocking layer 5, lead sheath 6, aluminum-alloy wire armour 7, semi-conductive buffer layer 8, zinc-coated wire armour 9 and polypropylene rope layer 10 outward at cable core, cable core outermost also extrudes outer protective polyethylene cover 11.

The described body 1 that blocks water adds the water blocking yarn that block-water performance is strong to twist into forming while adopting layering compact conductor simultaneously.

The invention provides a kind of environment-friendly type marine power cable; the above is only preferred implementation method of the present invention; should be understood that; for those skilled in the art; under the premise without departing from the principles of the invention; can also make some improvement, these improve and also should be considered as protection scope of the present invention.

Claims

1. an environment-friendly type marine power cable, comprises cable core, it is characterized in that, this cable core is by organizing water body (1) and being extruded in successively the outer semiconductive shielding layer (2) of the body that blocks water (1), ultra-clean insulating barrier (3), ultra-smooth insulation screen (4) formation; Be coated with successively semi-conductive buffer water blocking layer (5), lead sheath (6), aluminum-alloy wire armour (7), semi-conductive buffer layer (8), zinc-coated wire armour (9) and polypropylene rope layer (10) outward at cable core, cable core outermost also extrudes oversheath (11).

2. environment-friendly type marine power cable according to claim 1, is characterized in that, the described body that blocks water (1) adds the water blocking yarn that block-water performance is strong to twist into forming while adopting layering compact conductor simultaneously.

3. environment-friendly type marine power cable according to claim 1, is characterized in that, described oversheath (11) adopts polythene material.