阅读说明：本技术 用于位置固定地固位高空风力发电站的绳索 (Rope for the fixed-position retention of an aerial wind power station ) 是由 O.韦尔 于 2018-04-13 设计创作，主要内容包括：本发明涉及一种用于位置固定地固位高空风力发电站的绳索,其中该绳索例如紧固在地锚上,并且作用在高空风力发电站的护套上,其中绳索附加地构造为用于能量传递设备的载体,并且本身由包含承载气体的承载设备保持。(The invention relates to a cable for the stationary retention of an overhead wind power plant, wherein the cable is fastened, for example, to a ground anchor and acts on a jacket of the overhead wind power plant, wherein the cable is additionally designed as a carrier for energy transfer devices and is itself held by a carrier device containing a carrier gas.)

1. Rope (10) for the stationary retention of an aerial wind power station, wherein the rope (10) is fastened, for example, to an earth anchor and acts on a jacket of the aerial wind power station, characterized in that the rope (10) has a polyaramid substance and is additionally designed as a carrier for energy transfer devices and is itself held by a carrier device (18) containing a carrier gas (20).

2. A rope according to claim 1, characterised in that the load-bearing device (18) is formed by a plurality of closed load-bearing units (22).

3. Rope according to claim 2, characterized in that the plurality of closed load-bearing units (22) are nested one after the other and/or radially side by side and/or radially staggered in the rope direction.

4. Rope according to any one of the preceding claims, characterized in that the rope (10) is flexibly or softly constructed and manufactured from a material that is resistant to all wind and weather conditions occurring in the use position, in particular polyaramid.

5. A rope according to any one of the preceding claims, characterized in that at least one electrical conductor (14) is fastened as an energy transmission device on the rope (10).

6. Rope according to claim 5, characterized in that the electrical conductor (14) is gas-insulated and/or surrounded by a carrier element (22).

7. A rope according to claim 5 or 6, characterized in that the electrical conductor (14) is a cable (12), a superconductor (44) or a spark discharge path.

8. A rope according to claim 7, characterized in that the spark discharge path is connected to a transformer (24) arranged in the high altitude wind power plant.

9. A cord as claimed in claim 7 or 8, characterised in that said spark discharge path has electrically conductive walls and that said walls are arranged spaced apart from each other.

10. Rope according to claim 9, characterized in that the walls extend in the shape of a tube and are arranged coaxially to each other and are separated from gaseous and/or solid insulation (34).

11. Rope according to any one of claims 5-10, characterized in that the electrical conductor (14) is at least partly or locally thermally conductive and in particular has a cooling element (42).

12. A rope according to any one of the preceding claims, characterised in that the energy transmission device is formed by one or more air hoses (12) for compressed air.

13. Rope according to claim 12, characterized in that the air hose (12) connects a compressor arranged in the high altitude wind power plant with a compressed air storage on the ground surface.

14. Rope according to claim 12 or 13, characterized in that the air hose (12) is insulated, in particular by krypton, aerogel or vacuum insulation.

15. Rope according to any one of the preceding claims, characterized in that the outer cross-section of the rope (10) has an aerodynamic shape in order to reduce dynamic forces and the inner cross-section of the energy transfer device, in particular the air hose (12), has a circular, preferably donut-shaped shape.

Technical Field

The invention relates to a cable for the fixed-position retention of an overhead wind power plant, wherein the cable is fastened, for example, to a ground anchor and acts on a jacket of the overhead wind power plant.

Background

High altitude wind power plants are known which comprise a wind rotor or rotor. The high-altitude wind power plant is also partly filled with helium or other gas lighter than air, so that the high-altitude wind power plant obtains a buoyancy effect. High altitude wind power plants are usually held by ropes anchored to the ground (US 2008/0290665 a 1).

The ropes must withstand all wind and weather conditions based on a fixed connection to the ground. Furthermore, energy transmission must take place along the rope. It is important to reduce the weight of the energy transmission device on a large power basis. In the event of further conduction of current, the cable heats up during operation.

Disclosure of Invention

At least some of these problems are solved according to the invention in a cable for the stationary mounting of an overhead wind power plant, in that the cable has a polyaramid substance and is additionally designed as a carrier for energy transfer devices and is itself held by a carrier device containing a carrier gas, wherein the cable is fastened, for example, to a ground anchor and acts on a jacket of the overhead wind power plant. Preferred embodiments result from the dependent claims.

According to an embodiment of the invention, the air hose is adapted as an energy transfer device for transporting compressed air generated by the compressor in the high altitude wind power plant. On the surface, compressed air storage or potential energy storage is directly available. To generate the current, the compressed air reservoir is emptied and the generator is driven thereby. The efficiency is about 65% (including storage). Preferably, the air hose is insulated, in particular by krypton, aerogel or vacuum insulation. The rope or its sheath has an aerodynamic shape in order to reduce dynamic forces, whereas the energy transfer device, i.e. the air hose, has a circular shape and is self-stabilizing on the basis of compressed air.

The invention relates to a cable for an overhead wind power plant which is fastened to the ground and is located in a large height position between 2000m and 15000m, in particular between 8000m and 12000m (jetstream). The high-altitude wind power plant is designed for this purpose to utilize air velocities of 200 to 500km/h and to be held for a long time in such an altitude position. For this purpose, the sheath consists of a tear-resistant surface so that it can withstand all weather conditions.

According to a preferred embodiment of the invention, the carrier device is formed by a plurality of closed carrier bodies. Advantageously, the rope has an almost complete housing with a carrier body filled with a carrier gas.

In a development of the invention, it is provided that a plurality of closed supporting bodies are inserted one behind the other and/or radially next to one another and/or radially staggered in the cord direction. The rope has load bearing units over almost the entire surface, which give the rope and the energy transmission unit the necessary buoyancy. The load-bearing unit is fixedly connected with the holding rope.

The cable is of flexible or soft construction and is made of a material that is resistant to all wind and weather conditions occurring in the use position, in particular a polyaramid substance. The polyaramid substance (carbon fiber) has a very small self weight and a large tensile force.

For energy transmission, at least one electrical conductor is fastened to the cable. The electrical conductor is preferably gas-insulated and/or surrounded by a carrier. In contrast to known gas-insulated conductors having an inflexible structure, the variant according to the invention is designed flexibly. This is achieved in that both the inner core and the outer sheath consist of flexible material and do not consist of a fixed sheath. In addition, gas-tight barriers are arranged between the conductors in order to prevent the escape of insulating gas.

Variants of the invention provide that the electrical conductor is a cable, a superconductor or a spark discharge path. Furthermore, the cable is used not only for holding and retaining the high-altitude wind power plant, but also for energy transmission. Energy transfer is achieved in a very small weight and highest energy density. For this purpose, the energy transmission can be designed as a superconductor, or as a gas-insulated conductor, or also as a faraday cage. A voltage converter is arranged at the upper end of the electrical conductor, which converts the current into a spark discharge. The spark discharge is directed to the surface in a double faraday cage. In this case, the spark discharge is again converted into an electrical current.

In an embodiment of the invention, the cable is constituted by a double faraday cage. Here, a spark discharge is applied between the two metals. The metal is constructed of a flexible, soft material that allows movement of the cord.

The spark discharge path advantageously has electrically conductive walls, and the walls are arranged at a distance from one another. The walls extend in the form of tubes and are arranged coaxially to one another and are separated from the gaseous and/or solid insulation.

For the additional possibility of a reduced-weight energy transmitter, a superconducting cable is used. The superconducting cable is here fastened to a holding rope. The containers for the cooling liquid of the superconducting cables are located on the respective ends of the cables.

According to the dependent claims, the electrical conductor is at least partially or partially heat-conducting and in particular has a cooling element. There is additionally the possibility of adding a cooling sheath to the current-conducting cable, wherein cold ambient air cools the cable.

Drawings

Further advantages, features and details of the invention emerge from the dependent claims and the subsequent description, in which particularly preferred embodiments of the invention are described with reference to the figures.

In the drawings:

FIG. 1 shows a cross-sectional view through a first embodiment of the invention having a cord with electrical conductors;

fig. 2 shows a side view of a rope with electrical conductors according to fig. 1;

FIG. 3 shows a cross-sectional view through a second embodiment of the invention having a cord with electrical conductors;

FIG. 4 shows a cross-sectional view through a third embodiment of the invention having a cord with electrical conductors; and

fig. 5 shows a side view of a rope with electrical conductors according to a fourth embodiment.

Detailed Description

Fig. 1 shows a holding rope 10 in a cross-sectional view, with an electrical conductor 14 embodied as a cable 12 adjacent to the holding rope. The cord 10 and cable 12 are held together by a retaining device 16 and retained in both axial and radial directions. Both the cord 10 and the cable 12 are constructed of a flexible material. The rope 10 can be loaded in tension and is made of polyaramid material.

In an alternative embodiment of the invention, a retaining cable is likewise provided, however the air hose 12 is adjacent thereto. The compressed air generated in the high-altitude wind power station by means of one or more compressors is conducted to the surface by means of an air hose 12 and stored there or converted into another energy form, for example electrical energy.

The rope 10 and the cable 12 are surrounded by a carrier device 18 which has an airtight sheath and is filled with a carrier gas 20 which is lighter than air, for example helium. The jacket is large so that the total weight of the rope 10 and the electrical conductor 14 can be carried.

In fig. 2, the cable 10 with the electrical conductors 14 is visible in a side view, wherein the cable is surrounded by a plurality of individual load-bearing units 22. On the upper end of the cable 12 there is a voltage converter 24, which is located in an overhead wind power plant (not shown). An additional voltage converter 24 is located on the earth's surface 26.

In fig. 3, the cable 10 is shown in a cross-sectional view of a second embodiment, with the electrical conductor 14 adjacent to the cable. The electrical conductor 14 formed by the first conductor 28 and the outer layer 28 flexibly surrounding the first conductor is filled with a gas 32. The first conductor 28 and the outer layer 28 are held in spaced apart relation by an electrical insulator 34. In this embodiment, the carrier device is also filled with a carrier gas 20.

In fig. 4, the cable 10 is shown in a cross-sectional view of a third embodiment, with the electrical conductor 14 adjacent to the cable. The electrical conductor 14 is formed of a core 36, an inner flexible metal ring 38 and an outer flexible metal ring 40. The core 36 and the two metal rings 38 and 40 are kept spaced apart by the electrical insulator 34 and create a double faraday cage.

The flexible sheath of the gas-insulating electrical conductor 14 is formed from a plurality of cables which are formed from a core 36 and rings 38 and 40 which are connected to one another by an electrical insulator 34. Subsequently, the electrical conductor 14 is filled with a non-conductive gas. In a next step, an electric current may be transmitted through the gas-insulated conductor 14.

Fig. 5 shows a side view of a fourth embodiment of a cable 10 with an electrical conductor 14 embodied as a superconductor 44. The superconductor 44 is cooled by a cooling unit 42, which is located on the earth's surface 26 and in an overhead wind power plant (not shown).