Easily cleaned heat absorber for linear Fresnel heat collecting system

Abstract

The invention discloses an easily cleaned heat absorber for a linear Fresnel heat collecting system. The easily cleaned heat absorber comprises a heat collection pipe, a secondary reflection mirror and upright posts used for supporting the heat absorber, wherein a guide rail is laid in the length direction of the heat absorber; the guide rail is laid on a supporting object used for fixing the secondary reflection mirror or the heat collection pipe; a base capable of sliding along the guide rail is arranged on the guide rail; a cleaning head capable of stretching into the place around a cleaning surface of the heat absorber is arranged on the base; and the cleaning head is connected with a cleaning solution storage tank through a connecting pipe. According to the easily cleaned heat absorber, through the guide rail mounted on a heat absorber structure and the cleaning head fixed to the base, the relative fixation of the cleaning head and a to-be-cleaned surface is guaranteed; and the distance between the cleaning head and the to-be-cleaned surface is short, so that a cleaning solution is saved while a relatively good cleaning effect is achieved, and other structures of the heat absorber are not liable to damage.

Description

technical field [0001] The invention belongs to the technical field of solar thermal power generation, and relates to an easy-to-clean linear Fresnel heat absorber for a 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 w...

AI Technical Summary

Problems solved by technology

For linear Fresnel technology, the height of the heat absorber is relatively high, and there is a heat collecting mirror field below, and the vehicle-mounted water gun is used for direct cleaning. The distance is far and it is difficult to control the distance between the water outlet and the surface to be cleaned. In order to ensure the cleaning effect, The amount of cleaning water required is relatively large, and the secondary reflector and heat collecting tube may be lost

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