Heat absorber of linear Fresnel heat-collecting system

Abstract

The invention discloses a heat absorber of a linear Fresnel heat-collecting system.The heat absorber comprises a heat-collecting tube, secondary reflectors and stand columns supporting a heat absorber body, the heat-collecting tube is fixed to lower cross beams connected with the stand columns through supporting rods, and a spring steel piece is arranged between each supporting rod and the corresponding lower cross beam; the secondary reflectors are connected with multiple vertical plates respectively, and the vertical plates are connected with upper cross beams fixed to the stand columns or connected with a frame fixed among the stand columns.According to the heat absorber, the secondary reflectors and the heat-collecting tube are relatively independent in structure, and the heat absorber is simple in structure and convenient to mount and maintain; the supporting mode of the heat-collecting tube is simple and reliable, and it can be effectively guaranteed that the heat-collecting tube is not damaged due to the fact that the heat-collecting tube is heated and expanded; the secondary reflectors and the heat-collecting tube are all mounted on the stand columns, the stand columns are taken as the reference, accuracy of relative positions can be effectively guaranteed, and it is guaranteed that the secondary reflectors focus radiation to the heat-collecting tube.

Description

technical field [0001] The invention belongs to the technical field of solar photothermal power generation, and relates to a heat absorber of a linear Fresnel heat collection system. Background technique [0002] Solar thermal power generation technology uses concentrators to gather solar energy and convert it into heat energy, and then generate high-temperature and high-pressure steam to drive steam turbines to generate electricity. Linear Fresnel-type solar concentrating thermal power generation technology is a common form of solar thermal power generation at present. The primary mirror field composed of multi-faceted linear mirrors converges the sunlight into a linear spot, and then uses the receiver to pass through the heat transfer fluid. The high temperature generated by the light is absorbed and transferred to the heat exchanger. In the heat exchanger, the heat of the heat transfer fluid is used to heat the water to generate water vapor, and then use the water vapor ...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems of complex structure and difficult installation and maintenance of existing linear Fresnel heat absorbers, the present invention provides a heat absorber of a linear Fresnel heat collector system, which has a simple structure, is relatively convenient to install and maintain, and can Effectively guarantee the accuracy of the relative position of each component

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