CONNECTED PIPE CHANNEL FOR REGULATION OF LEVEL IN CONDENSER AND FEEDING TANK IN TRANSITIVE REGIME OF WORK POWER BLOCK 300 MW

摘要

Patent application relates to connecting pipeline for level regulation in condenser and in feeding tank at transition operation regime of 300 MW power block. Blocks of this kind are installed in thermo electric power plant "Nikola Tesla"-A in Obrenovac. In transition operation mode part of circular flow of feeding water (feed tank (14), boiler (19) and starting containers (22)) are filled in without control by steam supply over valves (15) and condensate passage over governing valve (9) and shaft gasket of feeding pumps over pipeline (16), while turbine condenser (5) is being emptied. This brings to manifestation of extreme levels in feeding tank (14) and condenser (5) that is hardly possible to overcome with operation of level regulation in automatic regime. Manual intervention includes ejection of a certain quantity of chemically prepared water from the system. Building in the connecting pipeline (31) along appropriate reinforcement - valves (29) and (30) - enables circulation between feeding tank (14) and turbine condenser (5), namely, bringing to range and providing operation of level regulation in automatic regime at all operational boiler loading.;Prijava patenta se odnosi na spojni cevovod za regulaciju nivoa u kondenzatoru i napojnom rezervoaru u prelaznom reimu rada bloka snage 300 MW. Ovakvi blokovi su instalisani u Termoelektrani "Nikola Tesla" - A u Obrenovcu. U prelaznom reimu rada deo cirkulacionog toka napojne vode (napojni rezervoar (14), kotao (19) i startne posude (22)) se dopunjavaju nekontrolisano dovodom pare za barbotau vode preko ventila (15) i prodorima kondenzata preko regulacionog ventila (9) i zaptivaa vratila napojnih pumpi preko cevovoda (16), dok se kondenzator turbine (5) prazni. To dovodi do pojave ekstremnih nivoa u napojnom rezervoaru (14) i kondenzatoru (5) to nije mogue prevazii radom regulacije nivoa u automatskom reimu. Runa (manuelna) intervencija podrazumeva izbacivanje iz sistema izvesne koliine hemijski pripremljene vode. Ugradnjom spojnog cevovoda (31) uz odgovarajuu armaturu -ventile (29) i (30) - omoguava se cirkulacija izmedju napojnog rezervoara (14) i kondenzatora turbine (5), odnosno, dovodjenje u opseg i omoguavanje rada regulacije nivoa u automatskom reimu pri svim optereenjima kotla.[Patent application relates to connecting pipeline for level regulation in condenser and in feeding tank at transition operation regime of 300 MW power block. Blocks of this kind are installed in thermo electric power plant "Nikola Tesla"-A in Obrenovac. In transition operation mode part of circular flow of feeding water (feed tank (14), boiler (19) and starting containers (22)) are filled in without control by steam supply over valves (15) and condensate passage over governing valve (9) and shaft gasket of feeding pumps over pipeline (16), while turbine condenser (5) is being emptied. This brings to manifestation of extreme levels in feeding tank (14) and condenser (5) that is hardly possible to overcome with operation of level regulation in automatic regime. Manual intervention includes ejection of a certain quantity of chemically prepared water from the system. Building in the connecting pipeline (31) along appropriate reinforcement - valves (29) and (30) - enables circulation between feeding tank (14) and turbine condenser (5), namely, bringing to range and providing operation of level regulation in automatic regime at all operational boiler loading.