| 摘要 |
PROBLEM TO BE SOLVED: To easily grasp water turbine characteristics of an existing hydraulic machinery, to predict how far an actual operation is deviated from a proper operation, and to properly indicate repair of a hydraulic machinery and direction of replace. SOLUTION: Flow passage shape data of an existing hydraulic machinery is sampled by a process flow 101 and based on the sampled data, mesh data for flow analysis is produced by a process flow 102 to effect flow analysis. Based on the result of the flow analysis, an iso efficiency chart of water turbine efficiency is prepared in a plane-form based on a flow rate head and a water turbine output. An operation point indicating the yearly flow state of the existing hydraulic machinery is indicated as spray data on the iso efficiency chart to confirm a deviation between present operation and water wheel characteristics and based on the deviation, a repair policy for the existing hydraulic machinery is decided. COPYRIGHT: (C)2004,JPO
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