METHOD FOR FORMATION OF PEAK POWER AT POWER BLOCKS OF COGENERATION PLANTS

摘要

A method for formation of peak power at power blocks of cogeneration plants consists in taking from basic turbine a part of worked out steam for regeneration, for actuation of feed-pump, for heating delivery water, additional overheating and return of steam to basic turbine to section of low pressure of basic turbine. For additional overhearing one takes steam from 1-st or 2-nd takeoff or steam of 1-st and 2-nd takeoffs at different pressures that are leveled and mixed, taken steam is overheated in high-temperature steam overheater and directed for operation of thermal drop in peak turbine with obtaining additional peak power. Steam having worked in peak turbine is returned to low pressure cylinder or to the second medium pressure cylinder of basic turbine. Heating mode is provided at supply to input of low pressure cylinder of mixed steam from exhaust of second medium pressure cylinder and peak turbine at amount of respective volumetric steam consumption for each flow of low pressure cylinder.