Azimuth rotation static-pressure support system of tower solar thermal power generation heliostat

Abstract

The invention relates to an azimuth rotation static-pressure support system of a tower solar thermal power generation heliostat. The tower solar thermal power generation heliostat includes a tower frame, a hydraulic motor speed reducer, an azimuth rotating unit and a pitching motion unit. The system designs chute and slide ring structures, and injects oil to the lower bottom end surface of a slide ring and the upper flat end surface of a chute through a pressure reducing valve, a one-way valve and a capillary throttling valve, so that the lubricating performance is greatly improved, the rotating torque of the tower heliostat azimuth is reduced by 70% compared with the torque of a mechanical drive, the azimuth rotation driving torque is largely reduced, the sizes of the driving device and the hydraulic motor are both largely reduced, and the cost of the azimuth driving device is correspondingly reduced.

Description

Technical field [0001] The invention belongs to the technical field of solar thermal power generation, and relates to a tower-type solar thermal power heliostat, in particular to a tower-type solar thermal power heliostat with azimuth rotation static pressure support system. Background technique [0002] At present, most of the heliostat driving devices for tower solar thermal power generation are mechanical driving devices. For example, China's current domestic first set of 1MW power generation tower solar thermal power plant has been accepted by the Chinese Academy of Sciences in May 2014, and its location is located in Yanqing County. It is understood that about 40% of the heliostats in the power station are already inoperable or the positioning accuracy is not up to the design requirements, and the overlap accuracy of the light spots is greatly reduced, which leads to the reduction of the light-to-heat conversion efficiency of the heat absorption tower, which directly leads t...

AI Technical Summary

Problems solved by technology

It is understood that about 40% of the heliostats in the power station are not working or the positioning accuracy has not met the design requirements, and the overlapping accuracy of the light spots is greatly reduced, which leads to the reduction of the light-to-heat conversion efficiency of the heat-absorbing tower, which directly leads to Reduced power generation efficiency

[0003] After analysis, the main reason for the above problems is that the mechanical motion driving device of the heliostat relies on rack and pinion and worm gear, and then the motor provides power for transmission; The backlash causes the overall mechanical device to vibrate and wear, which leads to increased error and noise of the device, thus greatly reducing the control accuracy of the mechanical drive device

If the system is designed for wear compensation and to improve the machining accuracy of mechanical gear parts, it will need to bear a considerable cost burden, and high costs are not good for the development prospects of solar thermal power generation

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