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Shorting closing time of steam valve for turbine - converting changing number of revolutions of rotation counter into inversely-proportional impulse pressure
Shorting closing time of steam valve for turbine - converting changing number of revolutions of rotation counter into inversely-proportional impulse pressure
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机译:缩短涡轮机蒸汽阀的关闭时间-将变化的转数反向转换成反比例的脉冲压力
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摘要
The closing time of a steam valve for a steam turbine is reduced by a sudden decrease in load. The changing number of revolutions of a rotation counter is converted into an impulse pressure inversely proportional to it. The adjusting piston of the valve (11) is set in dependence in the change in oil pressure in the impulse control line (17). The latter is assigned to a differential control (15) switched in parallel to the revolution control (12, 32). The differential control can be for an hydraulic steam turbine control. In which case, an oil chamber is divided into two volumes by a separating piston slidable against the force of a biasing spring.
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