Turbine runner with reduced leakage of servo-oil

Details Turbine runner with reduced leakage of servo-oil Turbine runner with reduced leakage of servo-oil

F - Mech Eng,Light,Heat,Weapons

03

B

F03B 3/14 (2006.01)

Patent

CA 2572183

Due to increasing environmental requirements, oil must be prevented from leaking from a turbine rotor disk and reaching the medium circulating around the turbine. In Kaplan turbines comprising a hydraulic mechanism (6) for actuating the rotor disk blades (3), hydraulic liquid leaks from the servomotor (5) and is collected in the inner chamber of the rotor disk hub (2). The invention relates to a rotor disk (1) by which means said leakage liquid can be reliably and easily collected and guided out of the rotor disk (1). A collecting basin (8) is arranged around the free end of the piston rod (7). The actuating movement of the servomotor (5) reduces and enlarges the pump volume (17), and hydraulic liquid is thus guided from the collecting basin (8) into the delivery pipe (11).

En raison des exigences environnementales croissantes, il est nécessaire d'empêcher que de l'huile fuie d'une roue de turbine et atteigne le milieu circulant autour de la turbine. Dans les turbines de Kaplan comprenant un mécanisme de réglage hydraulique (6) des aubes de roue (3), du liquide hydraulique fuit du servomoteur (5) et est collecté dans la chambre interne du moyeu de roue (2). La présente invention concerne une roue (1) avec laquelle ce liquide de fuite est collecté de manière sûre et simple et peut être évacué de la roue (1). Un récipient de collecte (8) est placé autour de l'extrémité libre de la tige de piston (7). Le mouvement de réglage du servomoteur (5) permet de réduire et d'augmenter le volume de pompe (17), ce qui permet de transporter le liquide hydraulique du récipient de collecte (8) dans la conduite de refoulement (11).

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