Unequal-distance stepped linear Fresnel solar condenser

Abstract

The invention discloses an unequal-distance stepped linear Fresnel solar condenser. The unequal-distance stepped linear Fresnel solar condenser includes a primary micro-arc reflector set 1; each reflector is arranged on a primary installation steel structure, the reflectors are successively arranged from top to bottom along an east-west axis, the heights of the reflectors are increasing from the south direction to the north direction, the distance between rows are successively increasing from the south direction to the north direction, sunlight can be fully utilized to the greatest extent, and wind resistance is reduce to the greatest extent. In the primary micro-arc reflector set 1, transmission connections between rows are achieved through linkage of a connection rod transmission mechanism 5; an electrical pushing rod can allow the reflectors in each row to rotate vertically so as to track the solar altitude; a probe installation speed reducing mechanism 6 determines that the solar tracking principle is reflective tracking; a tracking sensing device is arranged on the probe installation speed reducing mechanism, the probe installation speed reducing mechanism 6 is an independent mechanism which can be arranged on a random primary micro-arc reflector set 1 through a parallel connection rod mechanism. The unequal-distance stepped linear Fresnel solar condenser is easy to install and is stable in operation.

Description

technical field [0001] The invention relates to the technical field of solar energy concentrating, in particular to a stepped linear Fresnel solar energy concentrator with unequal distances. Background technique [0002] The solar concentrator system is the most important component in a solar power station, and its cost accounts for about 50% of the entire power generation system. Therefore, how to improve the system's concentration and heat collection efficiency, effectively reduce the system cost, and at the same time reduce the difficulty of system installation and maintenance is the key to the marketization of solar thermal power generation technology. [0003] There are still some deficiencies in the linear Fresnel solar concentrators that are widely commercialized at present. At present, the primary micro-arc reflector is usually fixed on the heliostat bracket after mechanical bending during the mirror installation process, which increases the workload of the mirror f...

AI Technical Summary

Problems solved by technology

In terms of the installation and fixing method of the primary reflector, the existing technology is to make mounting holes on the lens and connect them with bolts, or to bond a custom-made mirror bracket. These require high positioning accuracy for the lens mounting hole, and special adhesive for bonding the mirror bracket The viscosity requirements are also increased. During the bonding in winter, the mirror holder is easy to fall off, and the lenses on each rotating shaft have to be installed one by one, and the focus is adjusted, which greatly increases the difficulty of production and installation time.

The secondary mirror and heat collection pipe are made into an integral structure. No matter which one is damaged, it needs to be hoisted, disassembled and replaced as a whole. Maintenance is extremely inconvenient and affects the stability of equipment operation.

The horizontal layout of the mirror field is prone to occlusion and shadow problems, resulting in low system utilization and a large footprint, which limits its popularization and application to a certain extent

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