Voltage-sharing constant voltage carbon brush supporting device

Abstract

The invention discloses a voltage-sharing constant voltage carbon brush supporting device, composed of a first corrugated pipe, a second corrugated pipe, a first communicating branch pipe, a second communicating branch pipe, an annular pipe, a main pipe, a counterweight block, a sealing cylinder body and an air valve, wherein the annular pipe is communicated with the sealing cylinder body by virtue of the main pipe, one end of the first communicating branch pipe and one end of the second communicating branch pipe are led out from the annular pipe, the other end of the first communicating branch pipe and the other end of the second communicating branch pipe are respectively connected with the first corrugated pipe and the second corrugated pipe, one end, contacted with a first carbon brushand a second carbon brush, of each of the first corrugated pipe and the second corrugated pipe is sealed, air pressures in the first corrugated pipe and the second corrugated pipe are the same, and pressures applied to the end parts are the same. The first corrugated pipe and the second corrugated pipe are made from an H class insulating material and can freely stretch out and draw back in a certain range, the sealing surface on the sealing cylinder body is made from soft modified polyvinyl chloride, and pressure values at the end parts of the first corrugated pipe and the second corrugated pipe can be indirectly adjusted by adjusting the weight of the counterweight block above a sealing material.

Description

Technical field: [0001] The invention relates to an equal-pressure constant-pressure carbon brush support device. Background technique: [0002] The carbon brushes used in hydroelectric generators need to use constant pressure springs as the back end support, so that there is a certain pressure between the carbon brushes and the slip ring. Each carbon brush corresponds to a constant pressure spring, but the pressure consistency of the constant pressure spring is poor, causing the pressure between each carbon brush and the collector ring to be different, and the contact resistance is also different, resulting in the current passing through each carbon brush. Similarly, the current of individual carbon brushes is relatively high, the temperature is high, and even burned, which affects the safe and stable operation of the generator. At present, there are no specific measures to solve the difference in contact pressure and contact resistance between each carbon brush and the col...

AI Technical Summary

Problems solved by technology

Each carbon brush corresponds to a constant pressure spring, but the pressure consistency of the constant pressure spring is poor, causing the pressure between each carbon brush and the collector ring to be different, and the contact resistance is also different, resulting in the current passing through each carbon brush. Similarly, the current of individual carbon brushes is relatively high, the temperature is high, and even burned, which affects the safe and stable operation of the generator. At present, there are no specific measures to solve the difference in contact pressure and contact resistance between each carbon brush and the collector ring. big problem

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