Thermal power generating system adopting fixed dot array solar focusing

Abstract

The invention relates to solar energy focusing utilization, in particular to a thermal power generating system which is used for realizing solar energy collection by solar mirrors adopting dot focusing and is applied in fixed dot array solar focusing. The thermal power generating system comprises at least one or one group of solar mirrors adopting dot focusing, at least one solar photo-thermal converter and a tracking control device, wherein the solar mirrors are arranged on a solar mirror bracket, the solar photo-thermal converters are arranged in a dotted region focused by the solar mirrors, and the focus lengths of the solar mirrors vary in the solar tracking process and are always kept in the dotted regions of the solar photo-thermal converters; and the sunlight is focused by the solar mirrors to at least one solar photo-thermal converter under the control of the tracking control device when the sunlight varies, the solar photo-thermal converters do not move with the solar mirrors in the solar tracking process of the solar mirrors, the solar photo-thermal converters are kept static relative to the ground, and the tracking and focusing utilization of solar energy is realized.

Description

technical field [0001] The invention relates to the utilization of solar energy, in particular to the use of a point-focused solar mirror to realize solar energy collection, and the use of a point-focused converter to realize the focus tracking and focus thermal power generation system of solar energy, and relates to the utilization of focused thermal power generation of solar energy. Background technique [0002] The solar concentrating thermal power generation system is a solar energy utilization method that uses solar focusing and tracking technology to realize high-temperature heat collection of solar energy, and then converts thermal energy into electrical energy through a generator set. Traditional solar focused thermal power generation is divided into three types: trough type, tower type, and dish type. [0003] There are mainly two types of solar point focusing utilization technologies: tower type and butterfly type. The dish type system uses solar mirrors to focus o...

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Problems solved by technology

[0004] The tower system is a solar concentrating thermal power generation system that uses a solar mirror as a heliostat and focuses multiple solar reflectors on a solar thermal conversion device. Due to the characteristics of tower solar collection, it is in the process of tracking solar The utilization time of the solar mirror is only 4-6 hours. For example, the solar mirror on the east side of the tower is basically unusable in the morning and can only be used after noon or afternoon, so the efficiency of solar energy collection is low. This technical solution can realize high-temperature collection , but usually its size is large, not suitable for small or home systems

[0005] In 2006100203529 Solar Optical Mirror Tracking Utilizer and Its Array, the inventor disclosed zoom tracking systems with cross-shaped and disk-shaped structures, but this structure should belong to a combination of one or a group of solar mirrors and a solar photothermal conversion device At the same time, it is still limited to the cross-shaped and disc-shaped structures and cannot meet more needs

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