Multi-paraboloid focusing device capable of tracking solar rays

Abstract

The invention relates to a multi-paraboloid focusing device capable of tracking solar rays. The device comprises a plurality of rotatable light-reflecting parabolic panels aligned in parallel along an axis plane; a co-focal axis fixed small light-reflecting elliptical panel in a size smaller than the size of the light-reflecting parabolic panel is arranged in an adjacent region of a focal axis ofeach light-reflecting parabolic panel; one focal axis of each small light-reflecting elliptical panel respectively coincides with a focal axis A of a corresponding light-reflecting parabolic panel, and the other focal axes B of a plurality of small light-reflecting elliptical panels coincide; a photothermal conversion tube in parallel to the focal axis of each light-reflecting parabolic panel is arranged on the focal axis B; a plurality of light-reflecting parabolic panels are connected with a solar ray tracking device and are controlled to rotate round the focal axis of the light-reflecting parabolic panels so that the axis plane is constantly parallel to the solar rays. The invention does not need complicated pipelines and high towers, can focus the light energy of a plurality of light-reflecting parabolic panels to focus solar energy in a large range, thereby having low cost, high photothermal conversion efficiency and easy implementation.

Description

【Technical Field】 [0001] The invention relates to a solar device, in particular to a multi-parabolic focusing device capable of tracking the sun's rays. 【Background technique】 [0002] As we all know, solar energy is an inexhaustible and inexhaustible important energy source, but people have not yet been able to use it on a large scale. With the reduction of coal, oil, natural gas and other fossil energy sources and the continuous increase in prices, it has become more and more important for humans to obtain energy directly from solar energy. At present, a variety of solar energy utilization equipment has been used, such as photoelectric conversion and photothermal conversion equipment. Among the larger solar concentrators, one is a trough system and the other is a tower system. Among them, the trough system is composed of multiple trough light reflecting parabolic panels. The defect is that each trough light reflecting parabolic panel is provided with a light-to-heat conversio...

AI Technical Summary

Problems solved by technology

Among them, the trough system is composed of a plurality of trough-type light-reflective parabolic panels, and its defect is that each trough-type light-reflective parabolic panel is equipped with a light-to-heat conversion tube at the focal point, and must be connected through a complicated pipe network, so the production cost High, poor reliability, low light-to-heat conversion efficiency

The tower system is composed of a tall tower and a huge light-reflecting parabolic panel. The light-reflecting parabolic panel can rotate with the sun's rays and focus the sunlight on the light-to-heat conversion device on the top of the tower. When the solar energy is high, its three-dimensional geometric size is huge, the structure is complex, and the cost is high

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