Coil static electromagnetic eddy current speed regulator

Abstract

The invention discloses a coil static electromagnetic eddy current speed regulator, and belongs to the field of industrial motor speed regulation and energy saving. The speed regulator mainly is composed of an eddy current transmission part, a generator part and a control part. The outer layer of an outer rotor is the outer rotor A; the outer rotor A is made of a ferromagnetic material; the inner layer of the outer rotor is the outer rotor B; the outer rotor B is made of a copper material; when the magnitude of a transmission torque needs to be regulated, the executer of the control part drives a spline shaft, a generator silicon steel sheet and a generator armature to slide axially; a generator power is regulated through changing the intersection area of a permanent magnet and the armature; further the current magnitude in an excitation coil is changed; a magnetic flux is changed; and finally the transmission torque is changed. The speed regulator is high in reliability and easy in regulation; the generator is built in the speed regulator, and therefore, the energy saving demand can be satisfied; according to the device, the permanent magnet is replaced by an electromagnet, and therefore, the demagnetization phenomenon is avoided; and the speed regulation is realized under the condition of a fixed air gap.

Description

technical field [0001] The invention relates to an eddy current speed regulating device, which belongs to the field of speed regulating and energy saving of industrial motors. Background technique [0002] The governor is a frequently used component in the mechanical transmission system, and it is widely used in petrochemical, shipbuilding, aerospace, steel industry and other fields. The traditional fixation method of the speed governor is mostly rigid connection, which requires high alignment between the motor shaft and the load end shaft, and as the environment of the equipment changes, the connection part will vibrate, thereby accelerating wear and shortening the speed of the speed governor. Long life and noise, which will adversely affect the production environment; at the same time, traditional governors are difficult to operate in extreme environments such as toxic, flammable, and explosive. In order to further improve the reliability of the governor, it is necessary ...

AI Technical Summary

Problems solved by technology

[0005] (1) High power is difficult to dissipate heat, and permanent magnet loses magnetism at high temperature

Using permanent magnets to achieve speed regulation will inevitably lead to demagnetization. For example, when the temperature of permanent magnets rises to a certain value, the magnetic properties of permanent magnets will decrease, which affects the normal operation of permanent magnet eddy current governors. Therefore, permanent magnets The eddy current governor can only be used in a small power range and cannot meet the needs of high power

[0006] (2) The air gap adjustment mechanism is easily damaged

The current permanent magnet eddy current governor has two permanent disks. In order to achieve speed regulation, it is necessary to adjust the size of the air gap between the permanent disk and the copper disk, and a linkage device must be installed between the two permanent disks. Only by increasing the diameter of the permanent disk can there be room for the linkage device. Since it often works under the condition of rotation, the air gap adjustment mechanism is very easy to damage

[0007] (3) Non-linear change of transmission torque

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