公开(公告)号：US4578017A

公开(公告)日：1986-03-25

申请号：US599773

申请日：1984-04-13

申请人： Taizo Nakamura ,  Katsuyuki Kawahara

发明人： Taizo Nakamura ,  Katsuyuki Kawahara

IPC分类号： F03B15/04 ,  F03B15/06 ,  F03B15/18 ,  F01D21/14 ,  F03B13/10

CPC分类号： F03B15/06 ,  F03B15/18 ,  Y02E10/226 ,  Y10S415/91

摘要： A method for stopping a multi-stage hydraulic machine with an inlet valve, guide vanes including highest and lowest stage guide vanes, and a return passage connected between flow passages of respective stages, wherein the machine is in turbine operation, including the steps of initiating the closing of the highest stage movable guide vanes firstly and the lowest stage movable guide vanes secondly and judging whether a closing relation between the highest and lowest stage vanes is normal or not in accordance with predetermined criteria after initiation of closing the lowest stage movable guide vanes. The method includes the steps of controlling the closing of the lowest stage movable guide vanes based on the judgement result, and the step of closing the inlet valve.

摘要翻译： 一种用于停止具有入口阀的多级液压机的方法，包括最高和最低级导向叶片的导向叶片以及连接在各级的流动通道之间的返回通道的方法，其中机器处于涡轮机操作中，包括以下步骤：起动 首先关闭最高级可动导向叶片和次级可动导叶，然后根据预定标准判断最高级和最低级叶片之间的关闭关系是否正常，开始关闭最低级可动导叶 。 该方法包括以下步骤：基于判断结果控制最下级可动导叶的关闭，以及关闭入口阀的步骤。

公开(公告)号：US4475865A

公开(公告)日：1984-10-09

申请号：US342409

申请日：1982-01-25

申请人： Kaneo Sugishita ,  Katsuyuki Kawahara

发明人： Kaneo Sugishita ,  Katsuyuki Kawahara

IPC分类号： F03B15/04 ,  F03B15/12 ,  F03B15/08

CPC分类号： F03B15/12 ,  F03B15/04 ,  Y02E10/226 ,  Y10S415/91

摘要： An increment speed per unit time from the detected rotation speed of a water turbine or a pump turbine with an inlet valve is compared with a prescribed increment to deliver a close order to the inlet valve, when the increment becomes greater than the prescribed increment, for closing the inlet valve to a prescribed opening. Then, a fully open order to the inlet valve is delivered under the condition that neither an emergency shutdown order nor a quick shutdown order is issued to the water turbine or the pump turbine, when a speed governor performs a normal operation.

摘要翻译： 将水轮机或具有入口阀的泵涡轮机的检测转速的每单位时间的增量速度与规定的增量进行比较，以便在增量变得大于规定的增量时向进气阀传递紧密的顺序，对于 将入口阀关闭到规定的开口。 然后，当调速器执行正常操作时，在进入阀的完全打开的顺序被输送，条件是在水轮机或者水轮机上没有发出紧急停机命令和快速停机命令。

公开(公告)号：US4856965A

公开(公告)日：1989-08-15

申请号：US260690

申请日：1988-10-21

申请人： Masahiro Katsuie ,  Michiyuki Abe ,  Katsuyuki Kawahara ,  Taizo Nakamura

发明人： Masahiro Katsuie ,  Michiyuki Abe ,  Katsuyuki Kawahara ,  Taizo Nakamura

IPC分类号： H02P3/22 ,  H02P3/18 ,  H02P9/08 ,  H02P9/42

CPC分类号： H02P9/42 ,  H02P9/08 ,  H02P2101/10

摘要： A control system of pumping operation comprises a cycloconverter for converting AC power from a AC power system into AC power having a given frequency, anAC exciting generator-motor, having a stator side electrically connected to the AC power system, having a rotor side electrically connected to the cycloconverter, and having a rotor shaft mechanically coupled to a pump-turbine by which the pumping operation is carried out, a circuit breaker inserted between the AC power system and the AC exciting generator-motor, a rotation speed controller for controlling a rotation speed of the AC exciting generator-motor such that the rotation speed becomes slow when the pumping operation is to be stopped, an AC excitation controller for decreasing a degree of excitation effected by the cycloconverter, wherein decreasing of the excitation degree starts when the rotation speed of the AC exciting generator-motor reaches a given minimum value, and a circuit breaker controller for turning off the circuit breaker when input power, supplied from the AC power system to the AC exciting generator-motor becomes substantially zero.