Radiating type collector ring and application thereof

Abstract

The invention relates to a radiating type collector ring and an application thereof. The radiating type collector ring comprises a collector ring body which sequentially includes an upper collector ring, a collector ring supporting plate and a lower collector ring from top to bottom. The upper surface of the upper collector ring is provided with a plurality of first air guide blades, and the lower surface of the lower collector ring is provided with a plurality of second air guide blades. The included angle between the mounting axis of each first air guide blade and the diameter direction of the upper collector ring at the position is 0-45 degrees. The included angle between the mounting axis of each second air guide blade and the diameter direction of the lower collector ring at the position is 0-45 degrees. When a generator unit is working, the first air guide blades and the second air guide blades make air around the collector ring body move regularly to form strong wind. In the process, the heat on the surface of the collector ring body can be effectively taken away to achieve the purpose of cooling. Moreover, carbon dust produced due to friction between a carbon brush and the collector ring body can be taken away, and carbon powder can be prevented from being attached to and deposited on the surface of the collector ring body to affect insulation.

Description

technical field [0001] The invention relates to a collector ring body structure of a hydroelectric generator, in particular to a cooling collector ring and its application. Background technique [0002] The collector ring is the carrier of the rotor current of the generator, and the carbon brush is a conductive part that makes sliding contact with the moving parts to form an electrical connection. The carbon brush is a sliding contact body used to import and export current on the collector ring. They are important components of the motor, which are directly related to the long-term safe and stable operation of the power station. Since the collector ring and the carbon brush conduct the excitation current through mutual sliding contact, and dozens of carbon brushes are distributed on each collector ring, the uneven heating is caused by the difference in contact resistance and current distribution. Most of the overheating faults of collector rings and carbon brushes are caus...

AI Technical Summary

Problems solved by technology

The traditional collector ring structure of hydro-generator has no enhanced heat dissipation method, which may easily cause the surface temperature of the collector ring to be high, which is not conducive to the formation of oxide film and cannot play a lubricating role. High temperature increases the contact resistance, forming a vicious circle

The service life of collector rings and carbon brushes is significantly reduced at higher temperatures, so it is urgent to solve the heat dissipation problem of collector rings

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