A method for making a standard plate for grayscale detection and comparison of heliostat areas

Abstract

The invention discloses a method for making a standard plate used for detecting and comparing the gray scale of the area of ​​a heliostat mirror. Prepare multiple standard bare boards of the same size; put the mixture of prepared dust and organic solvent into the liquid storage chamber of the liquid spray pen; fix the mirror surface of the standard bare board at an inclined angle, and install a pressure sensor at the bottom of the standard bare board. The nozzle of the liquid spray pen is sprayed upwards on the mirror surface of the standard bare board; the weight of each standard bare board is weighed again with an electronic scale; the unit area of ​​the standard bare board is calculated according to the quality difference before and after spraying dust of each standard bare board Dust mass: For each level of standard bare board, calculate the measurement value of dust volume and take the error range. The invention realizes the definition of the gray scale of the mirror area and the manufacture of the gray scale standard plate, and lays a foundation for inspecting the area gray scale of the field mirror of the heliostat and improving the cleaning and power generation efficiency of the tower solar power station.

Description

technical field [0001] The invention relates to the field of making standard plates, in particular to a method for making a standard plate used for grayscale detection and comparison of the areas of heliostats. Background technique [0002] At present, the application of solar thermal power generation in practice is more and more widely, mainly in concentrating type, mainly including: tower type, trough type and dish type, etc. A tower solar thermal power generation system generally consists of four main parts: a heat absorbing tower, a heliostat array, a generator set, and a heat storage tank. [0003] The heliostat array is the core system, which belongs to the concentrating heat collection subsystem. The tower heliostat field is a concentrating system composed of multiple heliostats for concentrating solar radiation. Each heliostat continuously tracks the sun through its own independent tracking control device, and gathers the sunlight to the heat absorber on the top of...

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Problems solved by technology

[0008] Based on this, in order to solve the problems raised in the background technology, the object of the present invention is to solve the problem of the gray scale of the existing heliostats, cooperate with the inspection trolley in the mirror field of the solar power station, and provide a method for making gray scale The standard plate method is used to effectively measure the gray scale of the field mirror area of ​​the heliostat, and the staff of the solar power station can know the gray scale of the mirror area in time to clean the mirror surface and improve the power generation efficiency of the solar power station

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