Apparatus for supplying cooling channels of rotors of electrical machines with cooling waters

Claim 1

IN APPARATUS FOR SUPPLYING COOLING WATER TO THE COOLING CHANNELS OF AN ELECTRICAL MACHINE ROTOR HAVING A ROTOR SHAFT, AN INLET CHAMBER SURROUNDING THE ROTOR SHAFT IN LIQUID-TIGHT RELATION TO THE AMBIENT, AN OUTLET CHAMBER COMMUNICATING WITH THE ROTOR CHANNELS FOR RECEIVING THE COOLING WATER, THE LATTER BEING HEATED AND REDUCED IN PRESSURE BY ITS PASSAGE THROUGH THE ROTOR CHANNELS, SAID OUTLET CHAMBER SURROUNDING THE ROTOR SHAFT IN LIQUID-TIGHT RELATION TO THE AMBIENT, PRIMARY CONVEYING MEANS CONNECTED BETWEEN SAID OUTLET CHAMBER AND SAID INLET CHAMBER FOR CONDUCTING THE WATER BETWEEN SAID OUTLET CHAMBER AND SAID INLET CHAMBER, PUMP MEANS FOR SUPPLYING THE COOLING WATER TO SAID INLET CHAMBER UNDER PRESSURE AND FOR URGING THE SAME THROUGH SAID PRIMARY CONVEYING MEANS; A LEAKAGE WATER CHAMBER NEXT TO SAID OUTLET CHAMBER IN A DIRECTION TOWARD THE AMBIENT, SAID LEAKAGE WATER CHAMBER HAVING A FIRST CONTACTLESS SEAL DISPOSED WITH RESPECT TO THE SHAFT WHERE SAID LEAKAGE CHAMBER ADJOINS THE AMBIENT AND A SECOND CONTACTLESS SEAL WHERE SAID LEAKAGE CHAMBER ADJOINS SAID OUTLET CHAMBER, SAID LEAKAGE CHAMBER SERVING TO COLLECT COOLING WATER WHICH LEAKS THROUGH SAID SECOND SEAL DURING NORMAL OPERATION, SAID COOLING WATER BEING MIXED WITH AIR LEAKING INTO SAID LEAKAGE-WATER CHAMBER FROM THE AMBIENT SAID PUMP MEANS COMMUNICATING WITH SAID LEAKAGE-WATER CHAMBER FOR DRAWING THE LEAKAGE COOLING WATER FROM SAID LEAKAGE CHAMBER, HYDROGEN GAS SUPPLY MEANS CONNECTED TO SAID CONVEYING MEANS FOR SATURATING THE COOLING WATER CON-