SUPPLY SYSTEM FOR WATER-JET STEAM-AIR MIXTURE EJECTOR OF STEAM TURBINE CONDENSER

摘要

FIELD: steam turbines. SUBSTANCE: system of first modification has uplift pump 9 of ejector 1, drain tank 3 communicating with suction piping 10 of pump 9 and with drain piping of ejector 1. Connected to tank 3 is drain line 11 passing excess water to condenser 2. Suction piping 10 communicates with line 14 delivering continuously demineralized makeup water to condenser 2 for cooling service water of supply system of ejector 1. System of second modification has uplift pump 9 of ejector 1, drain tank communicating with suction piping 10 of pump 9 and with drain piping 12 of ejector 1. Connected to tank 3 is drain line 11 passing excess water to condenser 2. Surface heat exchanger 13 is built in tank 3 to provided for cooling supply system service water for ejector 1; its inlet is connected to line 14 continuously delivering demineralized makeup water to condenser 2, and its outlet is connected to condenser 2. To eliminate vacuum breaking in condenser 2, drain line 11 has water seal 18 in both modification. Demineralized water is used in both modifications for cooling ejector 1. EFFECT: eliminated contamination of elector service water with raw circulating water and its outlet to ejector associated with loss of circulating water conveyed to condenser; reduced heat loss due to return of demineralized water used by ejector to capacitor.