CN201477974U

CN201477974U - Power cable dedicated to wind driven generator

Info

Publication number: CN201477974U
Application number: CN2009201863898U
Authority: CN
Inventors: 王启斌
Original assignee: Anhui Guodian Cable Group Co Ltd
Current assignee: Anhui Guodian Cable Group Co Ltd
Priority date: 2009-07-16
Filing date: 2009-07-16
Publication date: 2010-05-19
Anticipated expiration: 2019-07-16

Abstract

The utility model provides a power cable dedicated to a wind driven generator, which is characterized in that the power cable is either a single-core cable or a multi-core cable, wherein, the single-core cable consists of an insulated wire core extrusion-covered with an outer sheath layer, the insulated wire core consists of a conductor extrusion-covered with an insulated layer, the multi-core cable consists of a cable core extrusion-covered with an inside liner and an outer sheath layer, the cable core consists of a plurality of insulated wire cores stranded together, the conductor is a soft copper wire consisting of a plurality of tinned thin copper wires stranded together in the same direction, the insulated layer is made from insulating materials containing silane crosslinked with ethylene-propylene rubber, and both the inside liner and the outer sheath layer are made of TPV elastomer materials through extrusion-covering. The utility model is good at flexibility, and not only is appropriate to various work environments because of the characteristics of high/low temperature resistance, oil resistance, weather resistance, ultraviolet resistance, marine corrosion resistance and the like, but also is appropriate as a dedicated power cable for wind driven generators by the merit of excellent reverse performance.

Description

Wind-driven generator special electric power cable

Technical field

The utility model relates to the electric power transfer cable, and a kind of wind-driven generator special electric power cable of more specifically saying so belongs to technical field of electric wires and cables.

Background technology

New forms of energy, regenerative resource become the topic that present people are concerned about.According to Committee of Development and Reform's planning, will reach 300,000,000 kilowatts to the year two thousand twenty China total installed capacity of hydropower total capacity, 3,000 ten thousand kilowatts of wind-powered electricity generations, 1,000,000 kilowatts of solar-energy photo-voltaic cells.With 1.1 hundred million kilowatts of present China water power, 760,000 kilowatts of wind-powered electricity generations, the installed capacity that solar-energy photo-voltaic cell is 60,000 kilowatts, if reach the object of planning, the total installed capacity of hydropower scale will increase by 2.7 times, wind-powered electricity generation increases by 39 times, and solar energy increases by 17 times.

Wind energy is a kind of clean reproducible energy, along with increasing the weight of day by day of energy shortage, wind energy be present in the natural fossil fuel energy, being embodied in it as the essential difference of coal, oil, natural gas etc. can be not a kind of inexhaustible, nexhaustible energy along with conversion and the utilization and reducing of itself.

The cable of one of wind electricity generating system vitals, because the environment particularity of laying, the conventional cable that uses is difficult to satisfy its specific (special) requirements.At present, the wind-driven generator private cable of having developed, most insulating barrier and restrictive coatings that adopt traditional rubber type of material as cable, because this type of elastomeric material of processing needs special-purpose plant equipment, difficulty of processing is bigger, and technical force has relatively high expectations, and manufacturing cost is also higher.Particularly concerning the cables manufacturing enterprise that does not have compounding rubber, process technology strength, must adopt new material, new technology, develop and satisfy wind power generation plant cable with equivalent technology level.

The utility model content

The utility model is for avoiding above-mentioned existing in prior technology weak point, provide a kind of soft degree good, not only have characteristics such as anti-high/low temperature, oil resistant, weather-proof, UV resistant, seawater corrosion resistance to adapt to different operational environments, and possess excellent twisting property, be suitable for special electric power cable as wind-driven generator.

The utility model technical solution problem adopts following technical scheme:

The design feature of the utility model wind-driven generator special electric power cable is:

The utility model wind-driven generator special electric power cable, its design feature is that the extruded insulation layer constitutes insulated wire cores on conductor, extrude external sheath layer outward by single insulated wire cores and constitute single-core cable, or constitute cable core by the stranded stranding of many eradications edge core, outside cable core, extrude inner covering and external sheath layer and constitute multicore cable;

Described conductor is a tin annealed copper wire, adopts multiply tinned wird thigh strand and multiple strand, and adopts burst strand and multiple strand version in the same way; Described insulating barrier is to be material with the silane coupling ethylene propylene rubber insulating material; Described inner covering and described external sheath layer are that TPV elastomer material extrudes and forms.

The utility model design feature is that also described conductor adopts the 5th class conductor.

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

1, the utility model conductor is soft zinc-plated fine copper wire, guarantees that copper wire is not oxidized; Adopt burst strand and twist structure in the same way again, guaranteed the good bending property of cable.

2, the utility model insulating barrier adopts the silane coupling ethylene propylene rubber material, substitute tradition sulfuration ethylene-propylene rubber, need not continuous vulcanization equipment, extrusion molding on common single multiple screw extruder, needn't reduce investment outlay with special-purpose rubber extruding machine, produce flexibly, it is easier to change product specification in the production process, does not have advantages such as waste.The insulation resistance of ethylene-propylene rubber insulating material is higher, and dielectric loss is less, and the highest long-term permission serviceability temperature of conductor can reach 90 ℃.

3, the inner covering in the utility model itself has the space effect between certain filling insulated wire cores on the one hand, on the other hand in the twist process of cable, inner covering has increased the relative slipping property between cable conductor and the external sheath layer, reduced the frictional force between cable conductor and the external sheath layer, absorb distorting stress, reduce wear.

4, the utility model inner covering and external sheath layer adopt TPV elastomer material, have following advantage:

A, TPV compare with the ordinary hot thermoplastic elastic, and intensity height, percentage elongation are big, and stretching strength is also higher, the oil resistance excellence;

B, TPV have more excellent resistance to elevated temperatures, and the long-term work temperature can reach 105 ℃, the heat aging performance excellence;

C, TPV and rubber phase ratio remove technologies such as sulfuration from, and performance can work as with rubber phase, and low temperature resistant anti-twisting property is good;

D, TPV are environment-friendly type, meet the RoHS of European Union standard.

E, TPV can make common PVC or the production of PE screw rod, need not other investment, save cost of investment and manufacturing cost.

Description of drawings

Fig. 1 is the utility model list core pattern construction of cable schematic diagram.

Fig. 2 is the utility model three-hole construction of cable schematic diagram.

Number in the figure: 1 conductor, 2 insulating barriers, 3 inner coverings, 4 external sheath layers.

Below by embodiment, the utility model is described in further detail in conjunction with the accompanying drawings.

Embodiment

Figure 1 shows that single core pattern construction of cable signal of adopting the utility model version.

Referring to Fig. 1, extruded insulation layer 2 constitutes insulated wire cores on conductor 1, extrudes external sheath layer 4 and constitute single-core cable outside single insulated wire cores.

Conductor 1 is a tin annealed copper wire, can be that performance meets the 5th kind of conductor in the GB/T3956-1997 GB, adopts multiply fine copper wire thigh strand and multiple strand, and is burst strand and multiple strand version in the same way, the conductor 1 outer high-temperature resistance plastice separator that allows.

Insulating barrier 2 adopts soft crosslinked with silicane ethylene-propylene rubber insulating material, and insulating barrier 2 closely is extruded on the conductor 1 and forms insulated wire cores.

External sheath layer 4 adopts the TPV elastomer to extrude and forms.

Figure 2 shows that the three-hole construction of cable signal of adopting the utility model version.

Be that with the different of structure shown in Figure 1 the cable core of three-hole cable is with the conductor 1 three core strandings that are extruded with insulating barrier 2, outside cable core, extrude inner covering 3 and external sheath layer 4 formation three-core cables.

Claims

1. wind-driven generator special electric power cable, it is characterized in that going up extruded insulation layer (2) at conductor (1) constitutes insulated wire cores, outside single insulated wire cores, extrude external sheath layer (4) and constitute single-core cable, or constitute cable core by the stranded stranding of many eradications edge core, outside cable core, extrude inner covering (3) and external sheath layer (4) and constitute multicore cable;

Described conductor (1) is a tin annealed copper wire, adopts multiply tinned wird thigh strand and multiple strand, and adopts burst strand and multiple strand version in the same way; Described insulating barrier (2) is to be material with the silane coupling ethylene propylene rubber insulating material; Described inner covering (3) and described external sheath layer (4) form for TPV elastomer material extrudes.

2. wind-driven generator special electric power cable according to claim 1 is characterized in that adopting the 5th class conductor at described conductor (1).