APPARATUS FOR CONTROLLING PISTON POSITION IN A HYDRAULICSERVO-MOTORS IN PARTICULAR ROTARY PISTON HYDRAULIC SERVO-MOTORS OF WATER TURBINES

摘要

1. The device for controlling the position of the hydraulic motor operator piston, especially the water turbine rotor, in which the oil distribution slider controlling the motor operator position is placed in the cylindrical through hole made in the piston rod in the motor operator axis and is connected with the link mechanism rotationally fitted beyond the motor operator axis and equipped with an arm extending to the outside of the casing for positioning the distribution slider, and the oil feeding channel is inside the slider, to which channel oil is supplied from the outside of the motor operator casing, whereas the run-off oil is drained to the run-off tank, consisting in that a hollow link (23) is placed on the extension of the distribution slider (7), on one end in the motor operator axis connected through a ball-and-socket joint with the distribution slider (7), and on the other end through another ball-and-socket joint connected with one end of the feeding link mechanism, inside which there is a lengthwise channel extending to the outside of the motor operator casing to the inlet (18) of the run-in oil, the elements connected through ball-and-socket joints being hydraulically coupled.IMAGE