PUMP-TURBINE SPLITTER RUNNER

摘要

THIS INVENTION RELATES TO A PUMP-TURBINE SPLITTER RUNNER (15) PROVIDED WITH LONG BLADES (17) AND SHORT BLADES (18) WHICH ARE SUPPORTED BETWEEN A CROWN (20) AND A BAND (21) AND ARRANGED ALTERNATELY ALONG A CIRCUMFERENTIAL DIRECTION OF THE RUNNER (15). THE BAND SIDE END POINT OF THE LEADING EDGE (19) OF THE SHORT BLADE (18) IS POSITIONED IN THE DIRECTION REVERSE TO THE RUNNER ROTATING DIRECTION IN THE PUMP MODE WITH RESPECT TO THE RADIAL LINE EXTENDING FROM THE CENTER POINT OF A MAIN SHAFT AND PASSING THE CROWN SIDE END POINT OF THE LEADING EDGE (19) OF THE SHORT BLADE (18) ON A PROJECTION PLANE VERTICAL TO THE MAIN SHAFT.(FIG 1)