Thermal power plant

Title: Thermal power plant

Related Patent Categories: Power Plants, Motive Fluid Energized By Externally Applied Heat, Process Of Power Production Or System Operation

Brief Patent Description - Full Patent Description - Patent Claims

The Patent Description & Claims data below is from USPTO Patent Application 20060185366, Thermal power plant.

1. A thermal power plant, comprising: a turbine utilizing a water-steam-cycle for energy transfer; a generator coupled to the turbine for generating electricity; a generator cooling device for cooling the generator, the generator cool ing device configured to discharge a condensate from the water-steam-cycle, feeding the condensate to the generator and returning the condensate to the water-steam-cycle.

2. The thermal power plant according to claim 1, wherein the generator cooling device comprises an extraction device for extracting the condensate from the water-steam-cycle, the extraction device arranged at such location of the water-steam-cycle having the lowest condensate temperature within the water-steam-cycle.

3. The thermal power plant according to claim 2, wherein the extraction device is arranged adjacent to a condenser adapted to convert steam exiting the turbine into the condensate.

4. The thermal power plant according to claim 2, wherein the extraction device is arranged adjacent to a condensate pump.

5. The thermal power plant according to claim 4, further comprising a low-pressure pre-heating device for pre-heating the condensate, the low-pressure pre-heating device connected to the condensate pump, wherein the extraction device is arranged upstream the condensate pump and downstream a low-pressure pre-heating device for pre-heating the condensate, the extraction device powered by excess steam discharged from the turbine.

6. The thermal power plant according to claim 2, wh erein the generator cooling device includes a returning device for re-circulating the condensate into the water-steam-loop.

7. The thermal power plant according to claim 6, wherein the condensate is re-circulated after being heated up during a cooling pro cess including a heat transfer from at least one generator component to the condensate.

8. The thermal power plant according to claim 5, wherein the turbine comprises a low pressure turbine for supplying the low-pressure pre-heating device with the excess steam.

9. The thermal power plant according to claim 1, wherein the generator cooling device includes a circulation pump for feeding the discharged condensate to the generator.

10. The thermal power plant according to claim 1, wherein the generator cooling device includes a pipeline system for routing the condensate through the generator cooling device.

11. A method of cooling a generator of a thermal power plant having a turbine and a water-steam-cycle, the method comprising discharging a condensate from the water-steam-cycle, feeding the condensate to the generator and returning the condensate to the water-steam-cycle, wherein heat emerging from at least one generator component is transferred to the condensate.

12. The method according to claim 11, wherein the condensate is discharged from the water-steam-cycle at such location of the water-steam-cycle having the lowest condensate temperature within the water-steam-cycle.

Brief Patent Description - Full Patent Description - Patent Claims

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