High-attitude repairing method for yaw brake disc of wind power generator set

Abstract

The invention discloses a high-attitude repairing method for a yaw brake disc of a wind power generator set. The method comprises the steps that a milling head machining device is adopted and arranged on a mounting face of a yaw brake, the yaw brake disc is machined, a frequency converter is additionally arranged to control the yaw rotating speed, and milling machining can be carried out. When the wearing depth of the yaw brake disc is smaller than 3 mm, a part of 3 mm can be cut off from the worn surface of the yaw brake disc, and then the yaw brake disc can be directly used. If the wearing depth of the yaw brake disc is between 3 mm and 8 mm, an insert welding technology is adopted, that is, a part of 8 mm is cut off from the worn surface of the yaw brake disc, and then an insert of 8 mm is welded to the yaw brake disc to guarantee the original thickness of the yaw brake. According to the high-attitude repairing method, the maintenance cost of a wind field fan can be greatly lowered, the yaw brake disc which is not worn too seriously (specifically below 8 mm) can be reutilized, resources are effectively utilized, and therefore the service life of the yaw brake disc is prolonged.

Description

technical field [0001] The invention relates to the technical field of yaw brake discs of wind power generators, in particular to a high-altitude repair method for yaw brake discs of wind power generators. Background technique [0002] At present, wind power generation, as an environmentally friendly energy industry, is getting more and more attention in the modern energy-constrained society, and the investment in wind power generators is also increasing. At present, the following problems generally exist in the existing wind power generating sets: 1. During the automatic yaw process of the yaw brake disc of the wind power generating set, due to the lack of wear detection of the brake friction plate, after the organic materials on the friction plate are worn out, the friction plate The bottom plate directly rubs against the yaw brake disc, causing the surface of the yaw brake disc to wear; 2. The yaw brake disc of the fan is worn, and the yaw brake clip is also severely worn...

AI Technical Summary

Problems solved by technology

At present, the following problems generally exist in the existing wind power generating sets: 1. During the automatic yaw process of the yaw brake disc of the wind power generating set, due to the lack of wear detection of the brake friction plate, after the organic materials on the friction plate are worn out, the friction plate The bottom plate directly rubs against the yaw brake disc, causing the surface of the yaw brake disc to wear; 2. The yaw brake disc of the fan is worn, and the yaw brake clip is also severely worn. The reason for the wear of both is due to the yaw The upper and lower gaps between the brake clip and the yaw brake disc are not consistent. Among them, the gap between the lower cylinder of the brake clip and the yaw brake disc is only less than 0.5mm, while the runout of the end face of the yaw brake disc is more than 0.5mm. When the cable or yaw, the friction plate of the yaw brake clip will rigidly collide with the yaw brake disc at the lowest point, which will directly cause the contact surface of the two to wear, and as the running time of the wind turbine increases, the wear will increase, and eventually 3. In addition to the lack of wear alarm system for yaw brake discs, some yaw brake discs will wear out every year without being discovered, and the wear will be quite serious after discovery

However, in the current technology, for the wear of the yaw brake disc, the traditional method is to hang the whole machine to replace the yaw brake disc. This method will greatly increase the maintenance cost of the wind farm site and cause great economic losses.

Images