STEAM TURBINE PLANT HEAT CYCLE

摘要

FIELD: power engineering. ^ SUBSTANCE: invention can be used in system of regenerative heating of feed water in heat exchange devices designed for heating of water by heat of superheated steam and condensing it on pipes of heat exchange surface. Proposed system contains turbine connected by steam supply pipelines from common extraction chamber with deaerator and first high-pressure heater in direction of feed water flow and separate pipelines with following high-pressure heaters in direction of feed water flow. First high-pressure heater in direction of feed water flow is connected by additional steam supply pipeline with deaerator before regulating valve. Proposed device makes it possible to increase economy of turboplant in high pressure heaters owing to use in high pressure steam heaters heat from summary flow rate of superheated steam getting into high-pressure heater and deaerator and elimination of heat losses with steam removed from housing of high-pressure heater together with steam-air mixture and increase of intensification of heat exchange owing to increase of average velocity of steam flow in tube space of high pressure heater. ^ EFFECT: increased economy of steam plant. ^ 1 dwg