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    • 1. 发明授权
    • Method of controlling operation of multistage hydraulic machines
    • 多级液压机械运行控制方法
    • US4255078A
    • 1981-03-10
    • US9928
    • 1979-02-05
    • Sachio TsunodaMasaharu Nonaka
    • Sachio TsunodaMasaharu Nonaka
    • F04D15/02F03B15/02F03B15/04F03B15/18F01D17/00F01D21/00
    • F03B15/02Y02E10/226
    • In a method of controlling guide vanes of a multistage hydraulic machine including a plurality of stages interconnected by return passages of the type wherein under an abnormal condition which occurs when the operation of a water wheel or a pump is stopped or when the load of the water wheel is interrupted or the input of the pump is interrupted due to a fault of the machine, the guide vanes are closed such that the degree of opening of the guide vanes of a higher pressure stage is maintained to be always equal to or smaller than the degree of opening of the guide vanes of a lower pressure stage, the guide vanes of the lower pressure stage are not completely closed and maintains a predetermined small degree of opening when the guide vanes of the higher pressure stage are completely closed.
    • 一种用于控制多级液压机械的引导叶片的方法,该多级液压机械包括多个级联,所述多级通过这种类型的返回通道相互连接,其中在水轮或泵的操作停止时或在水的负载下发生的异常情况下 由于机器的故障,车轮被中断或泵的输入中断,导向叶片被关闭,使得较高压力级的导向叶片的打开程度保持等于或小于 低压级的导向叶片的打开程度,当高压级的导向叶片完全关闭时,低压级的导叶不完全关闭并保持预定的小的开度。