Device for cooling the stator winding of an electric machine

• Main Author: G. A. BEZCHASTNOV, I. A. GLEBOV, Y. B. DANILEVICH, L. A. ZOLOTOV, T. M. NEMENI, A. I. NIKOLSKY, A. M. KARPOV, A. V. TJURIN, J. E. YAUNZEM, V. M. TELEVINOV ET A. M. SHARASHKIN
• Format: Patent
• Language: English; French
• Published: 17.05.1985
• Edition: 4
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; GENERATION

The invention relates to the construction of electric machines. The device forming the subject of the invention is characterised in particular in that the channels 4 for passing the refrigerating agent to the front regions 5 of the winding 6 of the stator 3 are delimited by the walls of separate ducts 9, each of which is shaped as a flowing twisted curve imitating the shape of the corresponding loop of the cable 8 in the front regions 5 of the winding 6, is connected in a leaktight manner to the corresponding slot 2, and is drilled in its middle part with holes 10 for taking in the refrigerating agent, and in that each duct 9 contains elements 11 which serve in the positional fixing of the cable 8 and are permeable to the refrigerating agent. The invention can be used in particular in the construction of high-voltage, high-power turbogenerators. L'INVENTION CONCERNE LA CONSTRUCTION DES MACHINES ELECTRIQUES.LE DISPOSITIF FAISANT L'OBJET DE L'INVENTION EST CARACTERISE NOTAMMENT EN CE QUE LES CANAUX 4 POUR LE PASSAGE DE L'AGENT REFRIGERANT VERS LES ZONES FRONTALES 5 DE L'ENROULEMENT 6 DU STATOR 3 SONT DELIMITES PAR LES PAROIS DE CONDUITS DISTINCTS 9 DONT CHACUNEST EN FORME DE COURBE GAUCHE COULANTE IMITANT LA FORME DE LA SPIRE CORRESPONDANTE DU CABLE 8 DANS LES ZONES FRONTALES 5 DE L'ENROULEMENT 6, EST RELIE D'UNE MANIERE ETANCHE A L'ENCOCHE 2 CORRESPONDANTE, ET EST PERCE DANS SA PARTIE MEDIANE DE TROUS 10 POUR L'ADMISSION DE L'AGENT REFRIGERANT, ET EN CE QUE CHAQUE CONDUIT 9 CONTIENT DES ELEMENTS 11 SERVANT A LA FIXATION EN POSITION DU CABLE 8 ET PERMEABLES A L'AGENT REFRIGERANT.L'INVENTION PEUT ETRE UTILISEE EN PARTICULIER DANS LA CONSTRUCTION DE TURBOGENERATEURS A HAUTE TENSION ET DE GRANDE PUISSANCE.