专利名称：Control system for extraction and injection
of steam from and into a turbine
发明人：Sivert Eklund,Claes Jonsson,Lars-Goran
Sjoberg
申请号：US08/167946申请日：19931220公开号：US05464318A公开日：19951107
摘要：The present invention relates to a control system for controlling injection andextraction of steam in a steam turbine (1), the same valves (5,6) being used both forinjection of steam to the turbine (1) and for extraction of steam from the turbine (1) . Thevalves (5, 6) commonly used for injection and extraction are controlled to be timelyopened and closed in dependence on the pressure conditions at injection points (2,3) andextraction points (2,3), respectively, in the turbine and on the pressure (P3) prevailing in aprocess network connected to the valves (5, 6) such that injected or extracted steam isutilized in an optimal manner.
申请人：ABB STAL AB
代理机构：Pollock, Vande Sande & Priddy
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