| 摘要 |
PURPOSE:To improve partial load efficiency ever so better, by making an opening combination of inlet vanes for both first and latter stages variable according to a ratio between first stage inlet temperature and latter stage inlet temperature of a cooler, in case of a capacity regulator for a multistage hydraulic machine. CONSTITUTION:A ratio between first stage suction temperature 24 and latter stage suction temperature 28 is found by a multiplication-division calculator 25, and the output is set down as the input of a latter stage group guide vane driving device 23. At the foregoing stage of a latter group inlet driving device, when latter group vane opening to first stage inlet vane opening is made so as to be varied by means of a ratio between first-and-second stage suction temperatures, an optimum opening relationship comes to fruition in a manner conformable to movements of a maximum efficient line. Therefore, optimum partial load operation is attainable and, what is more, an efficiency improvement in a hydraulic machine is well promotable.
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