Cooling liquid admitting and exhausting device for use with liquid-cooled electrical rotary machines

Claim 2

A cooling liquid admitting and exhausting device for use with liquid-cooled electrical rotary machines comprising a rotor having a hollow conductor winding, a hollow rotor shaft carrying said rotor and having a cooling liquid admitting passage and a cooling liquid exhausting passage which are formed within said rotor shaft and in hydraulical communication with said hollow conductor winding, a cover assembly enclosing therein the end portion of said rotor shaft and having a plurality of chambers in communication with said cooling liquid admitting and exhausting passages respectively, and means interposed between said cover assembly and said rotor shaft for sealing each of said plurality of chambers from each other and from the exterior of said device; and said cover assembly having a plurality of bearing means fitted upon said rotor shaft so as to rotatably support said cover assembly upon said rotor shaft.

Claim 3

A cooling liquid admitting and exhausting device as set forth in claim 1 wherein said bearing means comprises a plurality of bearings spaced apart from each other in the axial direction of said rotor shaft by a predetermined distance.

Claim 4

A cooling liquid admitting and exhausting device as set forth in claim 1 wherein said bearing means are arranged at the remote side from the end of said rotor shaft within said cover assembly.

Claim 5

A cooling liquid admitting and exhausting device as set forth in claim 1 wherein the stationary parts exterior of said device are coupled to said cover assembly through at least one flexible member so as to allow the slight movement of said cover assembly.

Claim 6

A cooling liquid admitting and exhausting device as set forth in claim 1 wherein said cover assembly is coupled to a stationary member through a rotation preventive means comprising a pin-shaped stopper extending from said stationary member in the axial direction of said rotor shaft and having an elastic surface and a bifurcated member securely fixed to said cover assembly and adapted to receive said stopper in the bifurcated portion thereof, whereby said cover assembly is permitted to move in the axial direction but is elastically prevented from being rotated.

Claim 7

A cooling liquid admitting and exhausting device for use with liquid-cooled electrical rotary machines comprising a rotor having hollow conductive winding, a hollow rotor shaft carrying said rotor and having a cooling liquid admitting passage and a cooling liquid exhausting passage which are in hydraulically communication with said hollow conductor winding of said rotor, a cooling liquid admitting and exhausting shaft having a cooling liquid admitting passage and cooling liquid exhausting passage which are adapted hydraulically connected to said admitting and exhausting passages of said rotor shaft respectively when said second-mentioned shaft is coupled to said first-mentioned shaft, a cooling liquid exhausting box enclosing therein said cooling liquid exhaust passage of said second-mentioned shaft at the end portion thereof remote from said first-mentioned shaft and having sealing means which are interposed between said second-mentioned shaft and said exhausting box in spaced-apart relation with each other in the axial direction in order to prevent the leakage of the cooling liquid from said exhausting box and a exhaust pipe for exhausting the cooling liquid from said exhausting box, a cooling liquid admitting box securely fixed to said exhausting box so as to enclose therein said admitting passage of said second-mentioned shaft and having a cooling liquid supply pipe, a leakage liquid collection box fixed to said exhausting box at the side opposiTe to said admitting box and having a drain pipe, a bearing box securely fixed to said leakage liquid collection box at the side opposite to said exhausting box and having a plurality of bearings fitted over said second-mentioned shaft, thereby supporting said admitting box, said exhausting box and said leakage liquid collection box upon said second-mentioned shaft through said bearings; and rotation preventive means fixed to at least one of said boxes.

Claim 8

A cooling liquid admitting and exhausting device for use with liquid-cooled electrical rotary machines comprising a rotor having hollow conductive winding, a hollow rotor shaft carrying said rotor and having a cooling liquid admitting passage and a cooling liquid exhausting passage which are in hydraulically communication with said hollow conductor winding of said rotor, a cooling liquid admitting and exhausting shaft having a cooling liquid admitting passage and cooling liquid exhausting passage which are adapted hydraulically connected to said admitting and exhausting passages of said rotor shaft respectively when said second-mentioned shaft is coupled to said first-mentioned shaft, a cooling liquid exhausting box enclosing therein said cooling liquid exhaust passage of said second-mentioned shaft at the end portion thereof remote from said first-mentioned shaft and having sealing means which are interposed between said second-mentioned shaft and said exhausting box in spaced-apart relation with each other in the axial direction in order to prevent the leakage of the cooling liquid from said exhausting box and a exhaust pipe for exhausting the cooling liquid from said exhausting box, a cooling liquid admitting box securely fixed to said exhausting box so as to enclose therein said admitting passage of said second-mentioned shaft and having a cooling liquid supply pipe, a leakage liquid collection box fixed to said exhausting box at the side opposiTe to said admitting box and having a drain pipe, a bearing box securely fixed to said leakage liquid collection box at the side opposite to said exhausting box and having a plurality of bearings fitted over said second-mentioned shaft, thereby supporting said admitting box, said exhausting box and said leakage liquid collection box upon said second-mentioned shaft through said bearings; and rotation preventive means fixed to at least one of said boxes.