Novel single-Dewar high-efficiency motor structure

Abstract

The invention discloses a novel single Dewar high-efficiency motor structure which is composed of a stator yoke part, a stator tooth part, a dovetail key, a stator winding, a Dewar sleeve, a screwed plug, a rotor iron core, a locking gasket, a magnet exciting coil, a coil supporting piece, a coil stop block, a rotating shaft, a copper shielding block, a cooling liquid circulation pipeline, a cooler, a rotor iron core taper key, a coil supporting piece taper key and a sealing ring. According to the invention, the operation efficiency of the motor is improved, more stator windings are placed in the stator slots, the stator volume is reduced, the vacuum volume is effectively reduced, heat transfer from the stator to the rotor direction is isolated, and the assembly and later maintenance are convenient. The capacity of the required cooling liquid and the power of the cooler are effectively reduced. The whole structure is simple, the rotor core and the coil supporting piece are both of an independent structure, the rotor core and the coil supporting piece can be installed only by vertically placing the bottom feet of the rotor core and the coil supporting piece in the T-shaped grooves of the rotating shaft, and installation is convenient.

Description

technical field [0001] The invention relates to the field of generators, in particular to a novel single Dewar high-efficiency motor structure. Background technique [0002] The motor is an electromagnetic device that converts or transmits electromechanical energy according to the law of electromagnetic induction. It is closely related to people's lives. With the continuous development of the motor industry, green energy has attracted more and more attention from the country, making large-capacity and high-efficiency motors more and more important. , but large-capacity motors are often affected by loss and heat, the volume often increases a lot, and the efficiency decreases. However, the windings in low-temperature environments have low resistance due to their low heat generation. Therefore, motors with this feature are important in the future. One of the directions of development. [0003] However, due to the current low-temperature environment, the motor has a double-laye...

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Problems solved by technology

[0002] The motor is an electromagnetic device that converts or transmits electromechanical energy according to the law of electromagnetic induction. It is closely related to people's lives. With the continuous development of the motor industry, green energy has attracted more and more attention from the country, making large-capacity and high-efficiency motors more and more important. , but large-capacity motors are often affected by loss and heat, the volume often increases a lot, and the efficiency decreases. However, the windings in low-temperature environments have low resistance due to their low heat generation. Therefore, motors with this feature are important in the future. One of the development directions

[0003] However, due to the current low-temperature environment, the motor has a double-layer Dewar structure, and a vacuum layer is left between the Dewars, so that the overall volume of the motor is relatively large, and the air gap is usually more than 25mm, and the excitation coil and the iron core of the motor are placed in the liquid as a whole. Cooling in nitrogen makes the overall cooling power larger, the cooling time longer, and the amount of liquid nitrogen used is too large, resulting in the overall high cost of the motor. Therefore, it is urgent to develop a new single-Dewar high-efficiency motor structure

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