CN201060692Y - wind energy cable - Google Patents

Abstract

The utility model discloses a wind energy cable, belonging to technical field of cables. The utility model is characterized in that conductors of the cable adopts a multistrand twisted copper wire; a tin coating is arranged on the surface of the conductors; a combined non-woven fabric isolation layer is arranged outside the tin coating; insulation material on the surface of the isolation layer is rubber compound 3GI3, and a sheath of rubber compound 3GI3 is extruded outside the isolation layer. The utility model has the advantages of ability to meet performance of flexible twist wind energy cable with high flexibility, elasticity, restorability, resistance to tension and low temperature, applicability to wiring of wind power generator with the rated voltage of 450/750 V or above, and special application in electric field at home and abroad with good social and economic benefit.

Description

wind energy cable

1. Technical field

The utility model relates to a structure of a wind energy cable, which belongs to the field of new cable technologies.

2. Background technology

As a clean and renewable energy, wind energy has been paid more and more attention by countries all over the world. Its reserves are huge. The global wind energy is about 2.74×109MW, of which the usable wind energy is 2×107MW, which is 10 times larger than the total amount of water energy that can be developed and utilized on the earth. China's wind energy reserves are large and widely distributed, and the wind energy reserves on land alone are about 253 million kilowatts. With the development of the global economy, the wind energy market has also developed rapidly. In the past five years, the world wind energy market has been growing at a rate of 40% every year. It is estimated that in the next 20-25 years, the world wind energy market will increase by 25% every year. Now, the cost of wind power generation has dropped to 1/5 of what it was in 1980. With the advancement of technology and the development of environmental protection, wind power generation will be fully competitive with coal-fired power generation commercially.

From January to September 2006, China's wind turbines imported a total of 481 units/kW, with a foreign exchange of US$175,709,596.00, of which 167 units/kW were imported from Italy, with a foreign exchange of US$87,165,232.00; 3,507 units/kW, earning USD 2,483,859.00, of which Sichuan, Tianjin, and Heilongjiang ranked the top three in terms of export volume.

China's wind power industry is developing relatively rapidly, but there is still a big gap with the development level of the international wind power industry. Domestic wind power equipment mainly relies on imports and is highly dependent on foreign countries. Although the cost of wind power has dropped a lot, the advantage over thermal power costs is in the short term. There are still many obstacles to the development of the wind power industry. Among them, the high manufacturing cost of wind power cables is also one of the important factors hindering the development of wind power generation in my country.

3. Contents of utility model

The purpose of this utility model is to solve the problem of lack of current wind power cables, and provide a flexible wind power cable with low temperature resistance, oil resistance, oxidation resistance, high pressure resistance and easy torsion.

The utility model provides a wind energy cable, which comprises a conductor with a tin-plated layer on the surface, an isolation layer, an insulating layer and a sheath layer, the isolation layer is coated on the surface of the conductor, and the isolation layer is coated with an insulating layer in turn And the sheath layer is characterized in that: the isolation layer is a composite non-woven fabric wrapped around the surface of the conductor.

An insulation layer and a sheath layer are arranged outside the above-mentioned cable core isolation layer. The material of the insulating layer is 3GI rubber compound, which is extruded on the surface of the insulating layer. The material of the sheath layer is 3GM3 rubber compound, which is extruded on the surface of the insulating layer. Although the structure is simple, the selection of materials and collocation schemes are novel and special.

The utility model has the advantages of reasonable and simple structure, easy manufacture, low cost and no pollution. The cable has strong flexibility, elasticity, recoverability, tensile strength, and low temperature resistance; the cable structure is compact, round, and safe to use, which can fully meet the performance requirements of today's wind energy cables. This product is dedicated to domestic and foreign wind farms. It has good environmental and economic benefits.

4. Description of drawings

Fig. 1 is the structural representation of the utility model.

In the figure: 1 conductor, 2 isolation layer, 3 insulation layer, 4 sheath layer.

5. Specific implementation

As shown in Figure 1, the utility model wraps a compound non-woven fabric isolation layer 2 on the surface of a multi-strand tinned copper wire conductor 1, and an insulating layer 3 of a rubber compound 3GI3 is installed on the outside, and then the rubber compound 3GM3 is extruded. jacket layer.

Claims (4)

1. wind energy cable, it comprises that the surface is provided with the conductor of tin coating (1), separator (2), insulating barrier (3) and restrictive coating (4), described separator (2) is coated on conductor (2) surface, separator (2) outer coated insulation layer (3) and restrictive coating (4) successively again, it is characterized in that: described separator (2) is that compound nonwoven cloth is wrapped on conductor (1) surface.

2. wind energy cable according to claim 1 is characterized in that described insulating barrier (3) is to be made by rubber composite 3GI3.

3. wind energy cable according to claim 1 and 2 is characterized in that described conductor (1) twists zinc-plated thin copper wire again for multiply.

4. wind energy cable according to claim 1 and 2 is characterized in that described restrictive coating (4) is to be made by rubber composite 3GM3.