SPEED GOVERNING CONTROLLER FOR STEAM TURBINE, METHOD FOR CONTROLLING THE SAME AND STEAM TURBINE
PROBLEM TO BE SOLVED: To provide a speed governing controller for a steam turbine which can satisfy both of suppression of valve body vibration of an intercept valve and turbine output control of high response.SOLUTION: A speed governing controller for a steam turbine includes: a control valve openi...
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| creator | MORI TAKAHIRO TOFUSA MASAYUKI TONE YOICHI SAITO YOSHINOBU |
| description | PROBLEM TO BE SOLVED: To provide a speed governing controller for a steam turbine which can satisfy both of suppression of valve body vibration of an intercept valve and turbine output control of high response.SOLUTION: A speed governing controller for a steam turbine includes: a control valve opening calculation part that calculates an opening of a control valve 6 according to a system frequency f of a system grid 21 and a CV reduction ratio; an intercept valve opening degree calculation part that calculates an opening degree of an intercept valve 7 according to the system frequency f and the ICV reduction ratio; a timer 46 that measures a passing time after the opening of the intercept valve 7 is reduced; and a control part that controls the intercept valve 7 depending on a calculated opening when the passing time is less than a setting time, and controls the intercept valve 7 into a fully opened state when the passing time reaches the setting time. |
| format | Patent |
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an intercept valve opening degree calculation part that calculates an opening degree of an intercept valve 7 according to the system frequency f and the ICV reduction ratio; a timer 46 that measures a passing time after the opening of the intercept valve 7 is reduced; and a control part that controls the intercept valve 7 depending on a calculated opening when the passing time is less than a setting time, and controls the intercept valve 7 into a fully opened state when the passing time reaches the setting time.</description><language>eng</language><subject>BLASTING ; ENGINE PLANTS IN GENERAL ; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR ; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES ; HEATING ; LIGHTING ; MACHINES OR ENGINES IN GENERAL ; MECHANICAL ENGINEERING ; NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES ; STEAM ACCUMULATORS ; STEAM ENGINE PLANTS ; STEAM ENGINES ; WEAPONS</subject><creationdate>2013</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20130905&DB=EPODOC&CC=JP&NR=2013174223A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20130905&DB=EPODOC&CC=JP&NR=2013174223A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>MORI TAKAHIRO</creatorcontrib><creatorcontrib>TOFUSA MASAYUKI</creatorcontrib><creatorcontrib>TONE YOICHI</creatorcontrib><creatorcontrib>SAITO YOSHINOBU</creatorcontrib><title>SPEED GOVERNING CONTROLLER FOR STEAM TURBINE, METHOD FOR CONTROLLING THE SAME AND STEAM TURBINE</title><description>PROBLEM TO BE SOLVED: To provide a speed governing controller for a steam turbine which can satisfy both of suppression of valve body vibration of an intercept valve and turbine output control of high response.SOLUTION: A speed governing controller for a steam turbine includes: a control valve opening calculation part that calculates an opening of a control valve 6 according to a system frequency f of a system grid 21 and a CV reduction ratio; 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an intercept valve opening degree calculation part that calculates an opening degree of an intercept valve 7 according to the system frequency f and the ICV reduction ratio; a timer 46 that measures a passing time after the opening of the intercept valve 7 is reduced; and a control part that controls the intercept valve 7 depending on a calculated opening when the passing time is less than a setting time, and controls the intercept valve 7 into a fully opened state when the passing time reaches the setting time.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | BLASTING ENGINE PLANTS IN GENERAL ENGINE PLANTS NOT OTHERWISE PROVIDED FOR ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES HEATING LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES STEAM ACCUMULATORS STEAM ENGINE PLANTS STEAM ENGINES WEAPONS |
| title | SPEED GOVERNING CONTROLLER FOR STEAM TURBINE, METHOD FOR CONTROLLING THE SAME AND STEAM TURBINE |
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