- 1 -Abstract:This invention relates to a governing mode changeoverapparatus for a steam turbine. The apparatus comprises acircuit for switching between a throttle governing mode anda nozzle governing mode. The load is controlled byselectively subjecting one of the steam control valves toload control during governing mode switching. The apparatushas the advantage that the turbine can be switched betweenthe throttle and nozzle governing modes with only a limitedfluctuation of the load.
展开▼