A solar heliostat aeroelastic model and its design method

Abstract

The invention relates to the technical field of aerodynamic models, and discloses an aeroelastic model of a solar heliostat and a design method thereof, which is different from the method of simulating rigidity and aerodynamic shape with a skeleton and a jacket of a traditional aeroelastic model. Stiffness simulation based on force characteristics; the designed aeroelastic model includes mirror panels, plane purlins, supporting trusses, torsion-resistant steel beams and columns, plane purlins are fixed under the mirror panels, and support trusses are fixed at intervals on the plane purlins, and torsion-resistant steel beams run through the The supporting trusses are fixed, and the torsion-resistant steel beams are placed on top of the columns. The aeroelastic model of a solar heliostat and its design method of the present invention can simultaneously meet the scaling requirements of the structural shape and structural quality of the heliostat, thereby effectively simulating the multi-order frequency of the heliostat structure, and in the production of the model The overall stability and low damping ratio are also guaranteed during the process, and it is practical to conduct wind tunnel tests on heliostats.

Description

technical field [0001] The invention relates to the technical field of aerodynamic models, in particular to an aeroelastic model of a solar heliostat and a design method thereof. Background technique [0002] As an important part of the solar heliostat power station, the heliostat needs to accurately reflect the sunlight to the heat collector, so it has high requirements on its working stability, and cannot produce large vibrations, and it is also under the action of wind load However, since the heliostats are usually built on open terrain, they will be subjected to relatively strong wind loads and are more likely to generate severe vibrations. Therefore, wind tunnel tests are required to study them. [0003] In the wind tunnel test, when designing the aeroelastic model, the stiffness of the structural components is generally adjusted to match the frequency of the model with the actual building. Stiffness simulation, for buildings and bridges, this method is relatively simp...

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Problems solved by technology

[0004] The purpose of the present invention is to: for the design method of the aeroelastic model in the prior art, the simulation of the rigidity and aerodynamic shape of the model is completed by applying the skeleton and the coat, and there is a problem that it is not suitable for the design of the aeroelastic model of the heliostat, providing An aeroelastic model of a solar heliostat and its design method are proposed. It is not necessary to complete the aerodynamic shape of the model through the coat, and the stiffness is simulated according to the force characteristics of different rods, and at the same time, it can meet the contraction of the structural shape and structural quality of the heliostat. Therefore, the multi-order frequency of the heliostat structure is effectively simulated, and the wind tunnel test of the heliostat has operational practicability

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