Test method and device of variable-paddle bearing friction moment of wind-driven generator and application thereof

Abstract

The invention relates to a test method and device of the variable-paddle bearing friction moment of a wind-driven generator and an application thereof. A simulation test device is arranged on the ground, and the variable-paddle bearing friction moment is measured by a ground test, i.e. a cantilever beam device is mounted on a paddle bearing, and the tail end of a cantilever beam is loaded to simulate a load in the practical operation of a blower; under the loaded condition, a variable-paddle system is started, and test equipment driven by variable paddles is utilized to measure the loaded variable-paddle bearing friction moment. The simulation test device for the variable-paddle bearing friction moment of the wind-driven generator comprises a fixed tool part which is mounted on a test bed; a hub assembly system with a variable-paddle bearing to be tested is mounted on the fixed tool part, and the variable-paddle bearing to be tested is connected with the cantilever beam for test by a bolt; a loading device is hung at the tail end of the cantilever beam, and a balance weight for adjusting the loaded weight is hung below the loading device.

Description

technical field [0001] The present invention relates to a testing method and device for wind turbine components and its application, especially to a testing method and device for the friction torque of the pitch bearing friction torque of a megawatt-level variable-pitch wind turbine generator set and its application. It is mainly used for ground experiments. The laboratory simulates the various loads borne by the pitch bearing in the actual operation of the wind turbine, and detects the frictional moment of the pitch bearing of the wind turbine. It can also be used for ultimate strength and fatigue tests of hubs, and ultimate strength and fatigue tests of pitch bearings. technical background [0002] For the wind turbine pitch system, accurate measurement of the friction torque of the pitch bearing is of great significance for the type test of the pitch system, the determination of the pitch drive torque, and the check of the pitch system. The friction torque of the pitch b...

AI Technical Summary

Problems solved by technology

The friction torque of the pitch bearing is different under the condition of no load and under load. At present, the main manufacturers of domestic pitch bearings have not accurately considered the influence of the load on the friction torque of the pitch bearing, but simply calculated the friction torque caused by the load as 5%-10% or so coefficient form to consider

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