Overlap-connected shape-adjusting device used for reflecting mirror for heliostat

Abstract

The invention discloses an overlap-connected shape-adjusting device used for a reflecting mirror for a heliostat, which is arranged on the back of the reflecting mirror for the heliostat and fixedly connected with a bracket of the heliostat. The overlap-connected shape adjusting device comprises a plurality of overlap-connected shape-adjusting connecting pieces, at least one central shape-adjusting connecting piece and a shape adjusting claw; the central shape-adjusting connecting piece is arranged at the center of the corresponding shape adjusting claws; the shape adjusting claw is fixed on the back of the reflecting mirror through the central shape-adjusting connecting piece; the claw ends of the corresponding shape adjusting claw are fixed on the back of the reflecting mirror through the overlap-connected shape-adjusting connecting pieces; and the overlap-connected shape-adjusting connecting pieces are connected and fixed on the bracket of the heliostat. The overlap-connected shape-adjusting device used for the reflecting mirror for the heliostat has the advantages of simple structure, high shape-adjusting control efficiency and better focusing alignment quality.

Description

technical field [0001] The invention relates to a docking shape adjusting device, in particular to a docking shape adjusting device for a reflector of a heliostat in solar thermal power generation. Background technique [0002] Heliostats are devices that collect solar radiant energy. They are used to track the sun and reflect sunlight to a fixed position. Focusing heat collection converts solar energy into thermal energy and then into electrical energy. [0003] Most of the existing heliostats are composed of a plurality of reflectors arranged and combined according to certain rules, and each reflector is adjusted to a certain curvature and spatial angle to make the heliostat as a whole achieve a focusing effect. Such as Chinese patent 200710023480.3, Chinese patent 200910147256.4, and Chinese patent 200910159996.X, the adjustment form of the mirror curvature and spatial angle is generally: multiple support points are set on the back of the reflector, and multiple support p...

AI Technical Summary

Problems solved by technology

For example, in Chinese patent 200710023480.3 and Chinese patent 200910159996.X, the connection between the back of the mirror and the supporting frame is rigid connection, because most of the mirrors are made of materials with extremely low yield ratio such as glass, and there is almost no yield deformation before rupture, which is extremely resistant to stress concentration. Sensitive, so the shape adjustment operation and wind pressure will cause additional bending moment on the mirror to generate local stress concentration, which will easily cause damage to the mirror

For example, in Chinese patent 200910147256.4 and Chinese patent 200910159996.X, the reflector is installed on the heliostat bracket through the support frame on the back, the installation position of the support frame is the center position, and the installation position has several support points or one support point, and The distance between the support points is small. Compared with the reflector, this installation method is similar to point support. In this way, the wind pressure will generate a large additional bending moment on the reflector at the installation position, and the strength requirements for the heliostat bracket are relatively high. , the structural load is neither economical nor scientific; at the same time, the spatial angle of the reflector is also adjusted through this installation position. It is extremely difficult to control when a spatial component is concentrated at one point to adjust the angle, so that high-quality heliostats cannot be produced. Redundant costs will be generated; and when adjusting the curvature of the mirror, because the position of the connector for adjusting the curvature coincides with the installation position of the support frame, interference is very likely to occur, and the operating space of the tool is extremely small, which is greatly unfavorable for manipulation and reduces work efficiency

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