| 摘要 |
DISCLOSED IS A RUNNER FOR A FRANCIS-TYPE HYDRAULIC TURBINE, COMPRISING A RING (1), A HUB (2), AND A NUMBER OF BLADES (3) ALL HAVING A CURVED-SHAPE AND BEING ATTACHED TO THE RING AND HUB. EACH BLADE (3) HAS AN INLET EDGE (5) AND AN OUTLET EDGE (6). THE BLADES (3) ARE CHARACTERIZED IN THAT, IN THE DIRECTION OF TURBINE ROTATION, THE JUNCTION POINT (A) OF EACH BLADE INLET EDGE (5) AT THE RING (1) IS LOCATED FORWARDLY OF THE INLET EDGE ATTACHMENT POINT (C) FOR THAT BLADE AT THE HUB (2), AND THE JUNCTION POINT (B) OF EACH BLADE OUTLET EDGE (6) AT THE HUB (2) IS LOCATED FORWARDLY OF THE OUTLET EDGE ATTACHMENT POINT (D) FOR THAT BLADE AT THE RING (1).
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