| Title of Invention | A HYDROELECTRIC POWER STATION AND A HYDROELECTRIC POWER UNIT THEREFOR |
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| Abstract | A hydroelectric power station, comprising at least one flow pipe (3) and a turbine (4) arranged in the flow pipe, is characterised in that the turbine comprises an enlargeable circular body (1) and vanes (5) mounted to the circular body to rotate by a flow of fluid in the flow pipe, wherein the enlargeable circular body of the turbine has a variable cross section for varying the flow-through cross section within the flow pipe. |
| Full Text | 1 A HYDROELECTRIC POWER STATION AND A HYDROELECTRIC POWER UNIT THEREFOR This invention relates to a hydroelectric power station and a hydroelectric power unit therefor. It is generally known in relation to hydroelectric power stations that, before the water impinges on the turbine of the hydroelectric power station and there delivers its energy to the turbine, the water flows through a pipe. Depending on the respective nature of the hydroelectric power station that pipe can be a downpipe through which the water flows, according to the respective local factors, in dependence on the fall height and the amount of water. After the water has delivered a part of its energy to the turbine, the water further flows away into a river. The turbine of the hydroelectric power station is usually coupled to a generator, with which the kinetic energy of the turbine is converted into electrical energy, the electrical energy then in turn being fed into a power supply network. Often a hydroelectric power station has not just one turbine but also a plurality of turbines and the water is fed to various turbines not just by way of a single pipe but by way of a plurality of pipes. Depending on the respective amount of water arriving suitable control of the amount of water for the individual pipes is then implemented so that an optimum degree of efficiency is achieved in the hydroelectric power station. The turbines are each arranged in the downpipe itself or in the prolongation of the downpipe in the flow pipe. The passage cross-section for the water in the downpipe, also in the region of the turbine (water impeller) in the flow pipe is fixed in that case at predetermined values. 2 The flow speed of the water in the region of the turbines is in this case usually adjusted by the volume flow, that is to say by the amount of water introduced in the downpipe or the flow pipe. Depending on the respective generator moment which is set, it is then possible to take the desired power from the system. Now, the object of the invention is to provide a hydroelectric power station, capable of adjusting the flow speed of the water (fluid) in the region of the turbine. According to the invention that object is attained by a hydroelectric power station, comprising at least one flow pipe and a turbine arranged in the flow pipe, characterised in that the turbine comprises an enlargeable circular body and vanes mounted to the circular body to rotate by a flow of fluid in the flow pipe, wherein the enlargeable circular body of the turbine comprises a variable cross section for varying the flow-through cross section within the flow pipe. In a preferred embodiment the circular body of the turbine comprises deformable bellows for adjusting the cross sectional area of the flow passage in the region of the enlargeable circular body. This invention also provides a hydroelectric power unit, comprising a flow pipe and a turbine with an enlargeable circular body and vanes mounted to the enlargeable circular body, to rotate by flow of fluid through the flow pipe, wherein the enlargeable circular body of the turbine comprises a variable cross section for varying the through-flow cross section within the flow pipe. According to the invention the turbine is so equipped that it has a variable cross-section. The invention is hereinafter described with reference to the accompanying drawings by way of an example. In the accompanying drawings, the sole Figure shows diagrammatic view of hydraulic power unit according to the invention. 3 As illustrated in the sole Figure the turbine 4 (water wheel) comprises a displacement body in the form of a circular body 1, on which the vanes 5 (rotor blades) of the turbine are mounted on the outside thereof. The turbine 4 with the vanes 5 can rotate in the flow pipe 3 and thus drive a suitably coupled generator (not shown in the Figure). As can be seen in the illustrated example the cross-section of the circular body is variable. For that purpose the circular body 1 is in the form of a bellows and is provided with an elastic surface. When the bellows is supplied from the interior with a suitable pressure which is greater than the external pressure in the flow pipe, the bellows expands and assumes the shape indicated by the broken line 2. As the entire turbine is of a circular configuration and that also applies in respect of the bellows, the increased cross-sectional area of the displacement body automatically becomes a reduced cross-sectional area for the water within the flow pipe 3. That reduced cross-sectional flow area for the water in the flow pipe automatically results in an increase in the flow speed so that the entire turbine is driven more rapidly than previously. Expandability of the displacement body can be embodied by its elastic surface and to expand the bellows, it can be provided that a fluid is pumped into the interior of the flow body or the bellows. Thus, by means of adjusting the cross-section of the displacement body, it is also possible for the speed of rotation of the entire turbine to be adapted to a desired value for the respective generator so that the speed of rotation of the turbine is optimally adapted to the generator system and thus the best possible degree of efficiency is also achieved. The measure set forth in accordance with the invention is extremely simple and nonetheless at the same time highly effective. The arrangement for arresting and mounting the turbine is not shown in the Figure, for reasons of clarity thereof. 4 CLAIMS : 1. A hydroelectric power station, comprising at least one flow pipe and a turbine arranged in the flow pipe, characterised in that the turbine comprises an enlargeable circular body and vanes mounted to the circular body to rotate by a flow of fluid in the flow pipe, wherein the enlargeable circular body of the turbine comprises a variable cross section for varying the flow-through cross section within the flow pipe. 2. A hydroelectric power station as claimed in claim 1, wherein the circular body of the turbine comprises deformable bellows for adjusting the cross sectional area of the flow passage in the region of the enlargeable circular body. 3. A hydroelectric power unit, comprising a flow pipe and a turbine with an enlargeable circular body and vanes mounted to the enlargeable circular body, to rotate by flow of fluid through the flow pipe, wherein the enlargeable circular body of the turbine comprises a variable cross section for varying the through- flow cross section within the flow pipe. A hydroelectric power station, comprising at least one flow pipe (3) and a turbine (4) arranged in the flow pipe, is characterised in that the turbine comprises an enlargeable circular body (1) and vanes (5) mounted to the circular body to rotate by a flow of fluid in the flow pipe, wherein the enlargeable circular body of the turbine has a variable cross section for varying the flow-through cross section within the flow pipe. |
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00739-kolnp-2004 correspondence.pdf
00739-kolnp-2004 description(complete).pdf
00739-kolnp-2004 letters patent.pdf
00739-kolnp-2004 priority document.pdf
00739-kolnp-2004 reply f.e.r.pdf
739-KOLNP-2004-CORRESPONDENCE 1.1.pdf
739-kolnp-2004-granted-abstract.pdf
739-kolnp-2004-granted-claims.pdf
739-kolnp-2004-granted-description (complete).pdf
739-kolnp-2004-granted-drawings.pdf
739-kolnp-2004-granted-specification.pdf
| Patent Number | 212608 | ||||||||
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| Indian Patent Application Number | 739/KOLNP/2004 | ||||||||
| PG Journal Number | 49/07 | ||||||||
| Publication Date | 07-Dec-2007 | ||||||||
| Grant Date | 04-Dec-2007 | ||||||||
| Date of Filing | 02-Jun-2004 | ||||||||
| Name of Patentee | WOBBEN ALOYS | ||||||||
| Applicant Address | ARGESTRASSE 19, 26607 AURICH, GERMANY. | ||||||||
Inventors:
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| PCT International Classification Number | F03B 15/02, 13/08 | ||||||||
| PCT International Application Number | PCT/EP02/14030 | ||||||||
| PCT International Filing date | 2002-12-11 | ||||||||
PCT Conventions:
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