EP 2348196 A2 20110727 - Turbine protection device and method for controlling a steam turbine
Title (en)
Turbine protection device and method for controlling a steam turbine
Title (de)
Turbinenschutzvorrichtung und Steuerungsverfahren einer Dampfturbine
Title (fr)
Dispositif de protection de turbine et procédé de commande pour une turbine à vapeur
Publication
Application
Priority
JP 2009189423 A 20090818
Abstract (en)
An object of the present invention is to provide a turbine protection device which can interrupt steam flowing backward from a deaerator (5) to a turbine (2) completely even if a check valve (3a) provided between the deaerator (5) and the turbine (2) can not interrupt the steam flowing between the deaerator (5) and the turbine (2) completely. In order to achieve the above object, a control unit (11) sends commands to a shutdown valve device (12) so as to close the shutdown valve device (12) when a differential pressure resulted from subtracting a pressure of a extraction steam from a pressure within the deaerator (5) becomes equal to or greater than a first predetermined value. As a result, the steam flowing backward from the deaerator (5) to the turbine (2) is interrupted by a stop valve of the shutdown valve device (12).
IPC 8 full level
F01K 7/34 (2006.01); F01D 1/28 (2006.01); F01D 21/14 (2006.01); F01K 13/02 (2006.01); F22D 1/28 (2006.01)
CPC (source: EP US)
F01D 21/14 (2013.01 - EP US); F01D 21/20 (2013.01 - EP US); F01K 7/34 (2013.01 - EP US); F01K 7/345 (2013.01 - EP US); F01K 13/02 (2013.01 - EP US); F22D 1/28 (2013.01 - EP US)
Citation (applicant)
JP H11148310 A 19990602 - TOSHIBA ENGINEERING CO
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
Designated extension state (EPC)
BA ME RS
DOCDB simple family (publication)
US 2011041503 A1 20110224; EP 2348196 A2 20110727; EP 2348196 A3 20170614; EP 2348196 A8 20110928; EP 2348196 B1 20191009; JP 2011038500 A 20110224; JP 5118672 B2 20130116
DOCDB simple family (application)
US 85798810 A 20100817; EP 10173147 A 20100818; JP 2009189423 A 20090818