| 摘要 |
<p>PURPOSE: To extend the life of a rotor by arranging a bar lift means for actuating at least one pair from a plurality of valves of a steam chest. CONSTITUTION: A plurality of valves 30 are arranged in a steam chest. At least one pair of the valves 30 of the plurality of valves 30 are actuated by a bar lift means comprising a bar 34, a lift yoke 40 and a servomotor 42. A full-arc admission and a partial-arc admission are transferred by actuating the bar lift means. In this way, the full-arc admission is transferred to the partial-arc admission during load cycle, therefore it is possible to extend the life of a rotor.</p> |
