Yaw system of wind generating set and wind generating set comprising system

Abstract

The invention relates to a yaw system of a wind generating set and the wind generating set comprising the system. The yaw system comprises a yaw cylinder section, a yaw drive, a yaw bearing, a yaw braking disc and a yaw brake, wherein the yaw cylinder section is arranged between a tower cylinder and a main machine frame of the wind generating set; the outer ring of the yaw bearing is fixed at the bottom of the yaw cylinder section; the inner ring of the yaw bearing is fixed together with the yaw brake disc and the tower cylinder; a gear hole is formed in a lower flange of the yaw cylinder section; the yaw drive is mounted in the yaw cylinder section and mounted on the lower flange of the yaw cylinder section; a yaw pinion penetrates the gear hole of the lower flange of the yaw cylinder section and is meshed with a gear ring of the inner ring of the yaw bearing. The yaw system adopts an inner meshed yaw mode and the yaw drive is separated from the main machine frame, so that a cabin and the tower cylinder are not oversized, and the problem that the generating set is difficult to transport and mount is solved. The yaw system can be widely applied to wind generating sets with the grade higher than 10 MW.

Description

technical field [0001] The invention belongs to wind power generation equipment, and in particular relates to a yaw system for a large-scale wind power generating set and a wind power generating set including the yaw system. Background technique [0002] The yaw system is an important part of modern large wind turbines. The yaw system adjusts the unit at any time according to the wind direction, so that the wind rotor is aligned with the wind direction, and can provide the necessary braking torque when the wind direction is aligned, so as to ensure safe operation. The yaw system is mainly composed of yaw bearing, yaw driving device, yaw braking device and so on. At present, there are two main methods used by most main engine manufacturers. One is internal meshing yaw. In this structure, the main frame needs to install large components such as speed increaser, main shaft, elastic support, and yaw drive, so that the bottom of the main frame The size is very large, because th...

AI Technical Summary

Problems solved by technology

At present, there are two main methods used by most main engine manufacturers. One is internal meshing yaw. In this structure, the main frame needs to install large components such as speed increaser, main shaft, elastic support, and yaw drive, so that the bottom of the main frame The size is very large, because the yaw bearing needs to form an internal mesh with the yaw drive, so the diameter of the top of the tower is also large; the other is the external mesh yaw, and the yaw drive is installed outside the main frame. The flight bearing needs to form an external mesh with the yaw drive, so the diameter of the top of the tower is only limited by the speed increaser, the main shaft, and the elastic support, so the diameter of the top of the tower is small, but the size of the main frame has not improved

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