Main bearing reduced scale performance test bench of large wind turbine

Abstract

The present invention discloses a main bearing reduced scale performance test bench of a large wind turbine. The main bearing reduced scale performance test bench of the large wind turbine comprises a fixed platform, a driving device, a rotor device, a loading device, a hydraulic system, a control device and a test system. The driving device, the rotor device and the loading device are fixedly connected with the fixed platform in turn, and the test system is installed between the outer ring transitional disk and the inner ring transitional disk of the loading device. The main bearing reduced scale performance test bench of a large wind turbine is able to satisfy integrated performance tests with different types and sizes; and the simulation of the actual loaded condition of the main bearing may be performed through combined loading of oil cylinders at different positions, and the synchronous measurement of performance parameters such as the temperature, the vibration, the rotating speed, the friction torque, the static tensile strain of the bearing, and the like are realized. Therefore the test cost of the wind power main bearing is greatly reduced, and the main bearing reduced scale performance test bench of a large wind turbine has an important significance for China wind power bearing technology development.

Description

technical field [0001] The invention relates to a scaled-scale performance test bench for a main bearing of a large-scale wind power generator. Background technique [0002] Wind power main bearing is a key component of megawatt-level wind power generators. Its performance determines the service performance and life of the wind power machine. Because the main bearing is difficult to maintain and the maintenance cost is high, it is required to have high reliability. Generally, wind power main bearings are required to be The bearing has a service life of more than 20 years, which means that the main bearing must undergo rigorous testing before installation. Through the analysis of various test indicators, we can fully understand the performance status of the main bearing, provide a basis for the improvement of the bearing structure, and ensure that the bearing is installed. However, there is still a lack of effective comprehensive performance test equipment for wind power main...

AI Technical Summary

Problems solved by technology

[0002] Wind power main bearing is a key component of megawatt-level wind power generators. Its performance determines the service performance and life of the wind power machine. Because the main bearing is difficult to maintain and the maintenance cost is high, it is required to have high reliability. Generally, wind power main bearings are required to be The bearing has a service life of more than 20 years, which means that the main bearing must undergo rigorous testing before installation. Through the analysis of various test indicators, we can fully understand the performance status of the main bearing, provide a basis for the improvement of the bearing structure, and ensure that the bearing is installed. However, there is still a lack of effective comprehensive performance test equipment for wind power main bearings in China at this stage, and it is impossible to simulate the actual working conditions of the main bearing, and to apply axial force, radial force and overturning moment at the same time Under the condition of load, the test of bearing temperature, friction torque, vibration, deformation, etc. is realized. At the same time, most of the existing wind power main bearing test devices in China can only monitor a certain type of specific bearing type, and the test devices are more versatile. In addition, the existing wind power bearing test machine can only use the bearing prototype to test, the test cost is huge, and it cannot meet the measurement of the main characteristic signals of the bearing, which limits the improvement of the test level of the wind power main bearing. Therefore, the development of a machine that can It is of great significance to simulate the actual working conditions of wind power main bearings and realize the wind power bearing scale test bench with different sizes and types of bearing tests

Images