SYSTEM FOR CASCADE DRAINAGE OF HEATING STEAM CONDENSATE OF EXTRACTION STEAM TURBINE PREHEATERS AT STEPPED PREHEATING OF HEATING-SYSTEM WATER

摘要

FIELD: cascade drainage of heating stem condensate of extraction steam turbines. SUBSTANCE: proposed system includes turbine, heating-system water preheaters, heating-system water pipe lines, pipe line supplying steam to first supply line preheater, pipe line supplying steam to second supply-line preheater, line for discharge of condensate from hot well of first preheater, line for discharge of condensate from hot well of second preheater, flash box connected by line discharging condensate from second preheater. Flash box is connected with line discharging condensate from first preheater by means of condensate discharge pipe line through hot well; it is also connected with heat exchanger by means of vapor discharge pipe line; heat exchanger is mounted in line discharging condensate from hot well of first preheater and is connected with line discharging condensate from first preheater by means of vapor discharge pipe line through hot well. EFFECT: enhanced economical efficiency. 1 dwg