TURBINE GLAND STEAM SUPPLY SYSTEM AND ITS APPLICATION METHOD

PROBLEM TO BE SOLVED: To provide a turbine gland steam supply system and its application method in which there occurs no possibility that the gland part is shrunk by gland steam and contacted with its surrounding part when a steam turbine is changed over from a high load operation to a stopped state...

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1. Verfasser:	NOSE TAIICHI
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	BLASTING ENGINE PLANTS IN GENERAL HEATING LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES STEAM ENGINES WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a turbine gland steam supply system and its application method in which there occurs no possibility that the gland part is shrunk by gland steam and contacted with its surrounding part when a steam turbine is changed over from a high load operation to a stopped state or to a low load operation.SOLUTION: A turbine gland steam supply system is configured in such a way that it is operated to supply gland steam to a gland part of a steam turbine driven with high temperature steam supplied from a main steam line, and mixed steam of lower temperature steam supplied from a supply source different from the high temperature steam than the high temperature steam and of the high temperature steam can be supplied to the gland part as the gland steam.SELECTED DRAWING: Figure 1 【課題】蒸気タービンが高負荷運転から停止又は低負荷運転に切り替わった際に、グランド蒸気によってグランド部が縮んで接触する虞がないタービングランド蒸気供給システム及びこの運用方法を提供する。【解決手段】タービングランド蒸気供給システムは、主蒸気ラインから供給される高温蒸気によって駆動する蒸気タービンのグランド部にグランド蒸気を供給するタービングランド蒸気供給システムであって、前記高温蒸気とは異なる供給源から供給され、且つ、前記高温蒸気よりも低温の低温蒸気と、前記高温蒸気との混合蒸気を、前記グランド蒸気として、前記グランド部に供給可能に構成される。【選択図】図１