SU516832A1 - The method of obtaining peak power - Google Patents

Description

one

The invention relates to heat and power engineering and can be used to create a BOC installation for covering electrical load peaks,

A known method of obtaining the peak power of a combined-cycle combined-cycle plant by turning off regenerative heaters, removing part of the steam from the intermediate. step of the steam turbine and the forcing of the gas turbine I by injection.

However, the use of the known method leads to an overload of the last stage of the steam turbine and a decrease in efficiency.

In order to eliminate this drawback, a method has been proposed in which the vapor from the intermediate stage is evaporated by chemically purified water, the steam of which is overheated and fed to the injection into the gas turbine. {

This allows an additional 20 power to be obtained by passing additional steam into the head of the turbine and forcing the gas turbine. This increases the efficiency of the method, since the main condensate is preserved, it increases

with temperature of steam supplied to gas turbine, J

The drawing shows schematically an installation for the implementation of the proposed method / containing an air compressor 1 supplying air to the ayrani 2 chamber, a gas turbine 3 whose exhaust gases are chemically purified to water and steam from a heat exchanger 5, the steam generator 6 | the steam from which is supplied to the steam turbine 7, the condenser 8, the regenerator. TIB low pressure heaters 9, high pressure regenerative heaters 10, feed pump 11, deaerator 12. injection pipe 13. 13. The method is implemented as follows,

With Disconnected Regenerative Heaters 1O, steam from steam generators 6 is fed to steam turbine 7. Part of the steam is taken from the mid-bore cylinder of the turbine and fed to heat exchanger 5, where it evaporates chemically purified water / turning into i condensate. The resulting steam after overheating in the economizer: served on the injection into the combustion chamber 2 of the gas turbine 3,

Claims (1)

Invention Formula A method for obtaining peak power in a miner combined cycle gas turbine unit by disconnecting regenerative heaters, And removing part of the steam from an intermediate stage of a steam turbine and forcing a gas tour. Bin by flow, characterized in that, in order to obtain additional power I and increase efficiency, the steam taken from the intermediate stage evaporates the chemically purified water, the steam of which is heated and fed to the injection into the gas turbine.