Heliostat wind-induced displacement testing device and testing method

Abstract

The invention discloses a heliostat wind-induced displacement testing device and a testing method thereof; an upper end of a follower (2) of the testing device is fixedly connected with a tested heliostat, a lower end of the follower (2) is in contact with an upper surface of an inductive board (3), the inductive board (3) is connected with a data acquiring device (5) and a computer (6), and is used for sensing the change of a contact position of a contact (29) and inputting the position information in the data acquiring device (5) and the computer (6) to analyze; an upper surface of the inductive board (3) is parallel to the ground, and the inductive board (3) is fixed on a inductive board bracket (4). Under the effect of wind vibration, the follower (2) and a component at a testing point of the heliostat are displaced simultaneously so as to enable the contact (29) to move on the upper surface of the inductive board (3). The position change information of the contact (29) on the upper surface of the inductive board (3) is input into the data acquiring device (5) and the computer (6) to process so as to obtain the wind-induced displacement at the testing point.

Description

technical field [0001] The invention relates to a displacement test device and a test method of a solar heliostat. Background technique [0002] The heliostat is a concentrating device in a solar tower thermal power generation system. It tracks the sun in two directions, the altitude angle and the azimuth angle, and focuses the sunlight to a fixed target after reflecting it. The heliostat works in an open-air environment, and the invasion of harsh conditions such as strong wind, rain, snow, and hail seriously affects the mechanical properties of the heliostat structure, especially the influence of wind load on the structural strength and stiffness of the heliostat cannot be ignored. At present, the reflection area of ​​a single heliostat has exceeded 100m 2 , and its structure is mostly single-column type, and the heliostat with this structure is easy to vibrate under the action of fluctuating wind load, which will cause wind-induced displacement of the heliostat structural...

AI Technical Summary

Problems solved by technology

Use speed sensors or acceleration sensors to test the wind vibration response of the structure, and then calculate the corresponding vibration displacement through the mathematical method of integration. This is an indirect method of measuring displacement. The disadvantage is that the mathematical calculation process is complicated and the accuracy needs to be determined. argument

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