Double-stator double-rotor flameproof motor

Abstract

A double-stator double-rotor flameproof motor comprises first and second rotors, first and second stators, a transmission shaft, a binding post, a conjunction box, a casing, an end cap and a bearing cap; the first and second rotor are connected to the transmission shaft successively, the first and second stators sleeve the first and second rotors respectively, the binding post is assembled in the conjunction box, the end cap and the bearing cap are assembled on the casing, and three main leads of a winding of the first stator and three main leads of a winding of the second stator are connected to the binding post with the leads in the same phase in parallel connection. The design difficulty of the flameproof motor of the power of 315kW and voltage of 1140V is overcome effectively, requirement for the output power is satisfied in the aspect of electromagnetic performance, use of raw materials is reduced effectively, and the installation difficulty of the whole motor is reduced greatly.

Description

[0001] Technical field: [0002] The invention relates to the field of flameproof motors, in particular to a flameproof motor with double stators and double rotors. [0003] technical background: [0004] Flameproof motor is a kind of motor that can be used in flammable and explosive places, mainly used in coal mines, oil and gas, petrochemical and chemical industries and other fields. Manufacturers of flameproof motors produce motors according to the external dimensions and parameters of flameproof motors provided by users. In the field of coal mines, mine environments are different, and the size and power requirements of flameproof motors are also different. Therefore, when designing a motor, determining the main dimensions is the key to the design. After the main dimensions are determined, other dimensions can be roughly determined. The main dimensions of the motor refer to the diameter and length of the armature core. For three-phase asynchronous motors, the main size spec...

AI Technical Summary

Problems solved by technology

Through reasonable electromagnetic calculation, it is found that if the design success rate of the external dimension of the motor is 315kW, one stator, one rotor in the conventional mode, many parameters in the electromagnetic calculation results are very poor and cannot meet the requirements of the standard

If these parameters are optimized, the diameter of the motor shaft will be smaller. Because the motor is slender, the motor will be affected by the weight of the rotor and the deflection generated during operation, which will easily cause uneven air gaps, and then generate unilateral magnetic pull, resulting in deflection of the shaft. With the increase of the magnetic pull imbalance, it will cause the shaft to bend and deform, resulting in the phenomenon of sweeping, until the motor burns out, which greatly reduces the reliability of the motor operation

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