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35results about How to "Axial spacing reduced" patented technology

Multi-rope lifting system for ultra-deep vertical shaft and guiding method of multi-rope lifting system

The invention discloses a multi-rope lifting system for an ultra-deep vertical shaft and a guiding method of the multi-rope lifting system, and belongs to the technical field of mine lifting. The multi-rope lifting system comprises an upper guiding wheel system, a lower guiding wheel system, a front lifting container, a rear lifting container, a driving unit, a front lifting rope, a rear lifting rope, a tail rope and a plurality of balance head ropes, wherein the front lifting rope is lapped on the upper guiding wheel system, one end of the front lifting rope is connected with the top of the front lifting container, and the other end of the front lifting rope is connected with the driving unit; the rear lifting rope is lapped on the lower guiding wheel system, one end of the rear lifting rope is connected with the top of the rear lifting container, and the other end of the rear lifting rope is connected with the driving unit; one end of the tail rope is connected with the bottom of thefront lifting container, and the other end of the tail rope is connected with the bottom of the rear lifting container; and the balance head ropes are lapped on the upper guiding wheel system, one end of each balance head rope is connected with the top of the front lifting container, and the other end of each balance head rope is connected with the top of the rear lifting container. According tothe multi-rope lifting system, the balance head ropes are arranged, so that the traction load borne by the driving unit is greatly reduced, the effective service life of the driving unit is greatly prolonged, and the multi-rope lifting system for the ultra-deep vertical shaft can carry out lifting operation with larger load.
Owner:CHINA UNIV OF MINING & TECH

Electrical rotating machine with one-sided cooling and method for one-sided cooling

The invention relates to an electrical rotating machine, comprising a stator (1), a rotor (8) and a turbomachine (7), which is provided to cool the electrical rotating machine on the one side, wherein the stator (1) comprises a laminated stator core (2), a front stator winding head (5a) and a rear stator winding head (5b), wherein the rotor (8) comprises a rear rotor winding head (6b). In order to improve cooling during the one-sided ventilation, in particular with respect to the prior art, with regard to a uniform temperature distribution, it is suggested that the laminated stator core (2) comprise channels (9a, 9b) extending in the axial direction, which are provided to cool the rear stator winding head (5b) with a second cooling air flow (14) generated by the turbomachine (7), wherein at least one first channel (9a) is provided to guide a second cooling air flow (14) generated by the turbomachine (7) through the laminated stator core (2) to the rear stator winding head (5b), wherein an air guide (4), which is fastened to the laminated stator core (2) on the side of the rear stator winding head (5b), is provided to bypass the second cooling air flow (14) via the rear stator winding head (5b), wherein at least one second channel (9b) is provided to guide the second cooling air flow (14) back from the rear stator winding head (5b) through the laminated stator core (2), wherein at least two radial slits (11) arranged in the axial direction, which are arranged radially between the channels (9a, 9b) running in the axial direction and an air gap (3) between the laminated stator core (2) and the rotor (8) and are connected to each other, are provided to cool the laminated stator core (2), in particular the stator windings, and / or the rear rotor winding head (6b), wherein the axial distance between the radial slits (11) to the side of laminated stator core (2) which faces away from the turbomachine (7) is reduced and is provided to compensate for a temperature gradient caused by one-sided cooling.
Owner:SIEMENS AG

Dry transformer

The invention discloses a dry transformer which comprises an upper clamping plate, a lower clamping plate and a transformer body mounted between the upper clamping plate and the lower clamping plate.The transformer body comprises an iron core, an upper low-voltage coil, an upper high-voltage coil, a lower low-voltage coil and a lower high-voltage coil, the upper low-voltage coil and the upper high-voltage coil sequentially sleeve the upper end of the iron core, the lower low-voltage coil and the lower high-voltage coil sequentially sleeve the lower end of the iron core, an inner gasket is arranged between the upper low-voltage coil and the lower low-voltage coil, an outer gasket is arranged between the upper high-voltage coil and the upper high-voltage coil, an upper folding screen is arranged between the upper low-voltage coil and the upper high-voltage coil, a lower folding screen is arranged between the lower low-voltage coil and the lower high-voltage coil, and a gap is reserved between the upper folding screen and the lower folding screen. By arranging the upper folding screen and the lower folding screen and reserving the gap therebetween, insulativity can be improved, and discharging effect among high-and-low-voltage coils is prevented effectively; axial interval is reduced, so that length of the iron core is reduced, size of the transformer is reduced, and making costcan be saved.
Owner:XINXIANG POWER SUPPLY COMPANY STATE GRID HENAN ELECTRIC POWER +1

Rotating electric machine with one-sided cooling and method for one-sided cooling

The invention relates to a rotating electrical machine having a stator (1), a rotor (8) and a hydrodynamic machine (7) provided for cooling the rotating electrical machine on one side, wherein the stator (1) has a stator lamination stack (2), front stator winding head (5a) and rear stator winding head (5b), wherein the rotor (8) has a rear rotor winding head (6b). In order to improve cooling in the case of one-sided ventilation compared to the prior art, in particular with regard to a uniform temperature distribution, it is proposed that the stator lamination pack (2) has channels (9a, 9b) extending in the axial direction, which are provided for cooling of the rear stator winding head (5b) by means of a second cooling air flow (14) generated by the hydrodynamic machine (7), wherein at least one first channel (9a) is provided for the second cooling air flow (14) generated by the hydrodynamic machine (7) The cooling air flow (14) is directed through the stator lamination stack (2) to the rear stator winding head (5b), where the air is fixed on the side of the stator lamination stack (2) on the side of the rear stator winding head (5b) A guide device (4) provided for routing a second cooling air flow (14) via the rear stator winding head (5b), wherein at least one second channel (9b) is provided for routing the second cooling air flow ( 14) Leading from the rear stator winding head (5b) back through the stator lamination stack (2), wherein at least two radial cutouts (11) arranged in the axial direction in each case are provided for cooling the stator lamination stack (2 ), in particular the stator winding and / or the rear rotor winding head (6b), wherein the radial cutouts are arranged radially in the passages (9a, 9b) extending in the axial direction and between the stator laminations (2) and the rotor (8 ) between the air gaps (3) and connect the two to each other, wherein the axial spacing between the radial cutouts (11) is towards the side of the stator lamination stack (2) facing away from the hydrodynamic machine (7) Smaller and set to compensate for temperature gradients created by one-sided cooling.
Owner:SIEMENS AG
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