Liquid-cooled electric machine, particularly turbo-generator专利检索-绝缘压穿连接器电缆，导体和接线专利检索查询-专利查询网

Liquid-cooled electric machine, particularly turbo-generator

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专利汇可以提供Liquid-cooled electric machine, particularly turbo-generator专利检索，专利查询，专利分析的服务。并且A liquid-cooled electric machine, such as a turbo-generator, has a stator with a multi-phase double-layer lap winding composed of winding portions, main current feed-throughs, and circuit connectors. The circuit connectors form electric circuit-group connections between the winding portions and also connect the winding portions with the feed-throughs. The stator comprises a liquid-coolant system which has two hydraulically parallel connected branch groups of coolant ducts. A first one of these duct groups extends through the multi-phase winding. The second branch group of ducts extends through the feed-throughs and the connectors. Insulating hose members form part of the second branch group and fluidically bridge each two of those connectors that have instantaneous potentials, i.e. have different electrical potentials or assertain to different phases. A plurality of hydraulically parallel cooling branches of the second group is formed by the hose members and those of said connectors that are electrically located between each two of the feed-throughs. The connectors form a ring conductor arrangement, and each of said cooling branches between two respective ones of said feed-throughs has a portion which extends through the geodetically topmost region of the arrangement. At least one insulating coolant discharge line is connected to this topmost portion, the coolant being conducted in the cooling branch between the two feed-throughs and the associated discharge line in double-stream fashion. A coolant collector tank with an internal gas cushion space is mounted geodetically above the topmost ring conductor portion. The coolant discharge line forms a riser communicating from below with said tank so as to pass not only coolant but, due to buoyancy, also entrained undissolved gas into the tank.，下面是Liquid-cooled electric machine, particularly turbo-generator专利的具体信息内容。

权利要求

1. A liquid-cooled electric machine having a three-phase stator winding in simple Y connection, such as a turbo-generator, with a stator having a multi-phase double-layer lap winding composed of winding portions, main current feed-throughs, six of said feedthroughs being associated in pairs with each one of said stator winding circuits, and circuit connectors which form electric circuit group connections between said winding portions and which connect said winding portions with said feed-throughs, said stator comprising a liquid-coolant system having two hydraulically parallel connected branch groups of coolant ducts of which a first one extends through said multi-phase winding, the second branch group extending through said feed-throughs and said connectors, insulating hose members forming part of said second branch group and fluidically bridging each two of said connectors that have different instantaneous electrical potentials respectively, a plurality of hydraulically parallel cooling branches of said second group being formed by said hose members of those of said connectors that are electrically located between each two of said feed-throughs, said connectors forming a ring conductor arrangement, each of said cooling branches between two respective ones of said feed-throughs having a portion extending through the geodetically topmost region of said arrangement, at least one insulating coolant discharge line connected to said topmost portion, a coolant collector tank with a gas cushion space mounted geodetically above said topmost ring conductor portion, said coolant discharge line forming a riser communicating from below with said tank so that said riser conducts into said tank not only coolant but, due to buoyancy, also entrained undissolved gas, said circuit connectors comprising external terminal connectors which establish the electrical connection between said feedthroughs and an end of the winding circuit, and internal circuit-group connectors which electrically series connect respective parts of said windings, said second cooling branch group forming six hydraulically parallel flow paths through the cooling ducts of the connectors, each individual one of said six paths extending through the series-connected cooling ducts of a feed-through, a circuit connector, an insulating hose section fluidically bridging the phase jump to the group circuit connector of another circuit of the winding, and thence through part of said topmost portion of said ring conductor to the cooling discharge line.

2. A liquid-cooled electric machine having a three-phase stator winding in double-Y connection, such as a turbo-generator, with a stator having a multi-phase double-layer lap winding composed of winding portions, mAin current feed-throughs, six of said feed-throughs being pairwise associated with each of the stator winding phases, and circuit connectors which form electric circuit group connections between said winding portions and which connect said winding portions with said feed-throughs, said stator comprising a liquid-coolant system having two hydraulically parallel connected branch groups of coolant ducts of which a first one extends through said multi-phase winding, the second branch group extending through said feed-throughs and said connectors, insulating hose members forming part of said second branch group and fluidically bridging each two of said connectors that have different instantaneous electrical potentials respectively, a plurality of hydraulically parallel cooling branches of said second group being formed by said hose members of those of said connectors that are electrically located between each two of said feed-throughs, said connectors forming a ring conductor arrangement, each of said cooling branches between two respective ones of said feed-throughs having a portion extending through the geodetically topmost region of said arrangement, at least one insulating coolant discharge line connected to said topmost portion, a coolant collector tank with a gas cushion space mounted geodetically above said topmost ring conductor portion, said coolant discharge line forming a riser communicating from below with said tank so that said riser conducts into said tank not only coolant but, due to buoyancy, also entrained undissolved gas, the cooling branches of the circuit connectors between each two of said feed-throughs having approximately in the middle of their cooling-duct length a topmost ring conductor portion, at least one coolant discharge line connected to said topmost portion so that at least one pair of coolant stream paths is formed, one path of each pair passing directly via a circuit connector cooling duct to a connection point of said coolant discharge line, and one of each of said path pairs extending to said connection point through insulating hose members that fluidically interconnect connectors of different phases or different potentials.

3. A liquid-cooled electric machine, such as a turbo-generator, with a stator having a multi-phase double-layer lap winding composed of winding portions, main current feed-throughs, and circuit connectors which form electric circuit group connections between said winding portions and which connect said winding portions with said feed-throughs, said stator comprising a liquid-coolant system having two hydraulically parallel connected branch groups of coolant ducts of which a first one extends through said multi-phase winding, the second branch group extending through said feed-throughs and said connectors, insulating hose members forming part of said second branch group and fluidically bridging each two of said connectors that have different instantaneous electrical potentials respectively, a plurality of hydraulically parallel cooling branches of said second group being formed by said hose members of those of said connectors that are electrically located between each two of said feed-throughs, said connectors forming a ring conductor arrangement, each of said cooling branches between two respective ones of said feed-throughs having a portion extending through the geodetically topmost region of said arrangement, at least one insulating coolant discharge line connected to said topmost portion, a coolant collector tank with a gas cushion space mounted geodetically above said topmost ring conductor portion, said coolant discharge line forming a riser communicating from below with said tank so that said riser conducts into said tank not only coolant but, due to buoyancy, also entrained undissolved gas, each of said two cooling branch groups comprising a supply distribution line, a discharge manifold and insulating duct members with metal fittings which connect said supply distribution line and said manifold with cooling branCh parts at ground potential so as to permit, with the cooling branches filled with water, an insulation test of one stator winding when other winding circuits or cooling branch parts not supposed to conduct testing current are held at the measuring potential different from ground potential.

4. In a machine according to claim 3, said insulating duct members forming resilient compensators.

5. In a machine according to claim 3, said insulating duct members being formed of corrugated bellons tubing.

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Liquid-cooled electric machine, particularly turbo-generator

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