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为实现太阳光能的高品位利用,设计了以抛物聚光器为聚光功能载体且配有双轴视日跟踪机构的碟式/斯特林热发电系统的机架结构.在机架承载和传力特性一致的基础上建立了机架的有限元模型,并基于数值风洞模拟的机架风载荷,计算得到了机架处于不同高度角时自重和风载作用的变形与应力分布,分析了机架承载的位移特性和薄弱位置的应力分布.结果表明,该机架在8级风载(17.1 m/s)作用时聚光器仍具有较好的几何“保型”能力,且在抗风运行以及12大风避险时结构均处于安全状态.
In order to realize high-grade utilization of solar energy, a rack structure of a dish / Stirling thermal power generation system with a parabolic concentrator as a light-gathering function carrier and a biaxial-day tracking mechanism is designed. The finite element model of the frame is established on the basis of the characteristics of force transmission and the force transmission characteristics. Based on the wind load simulated by the numerical wind tunnel, the deformation and stress distribution of the self-weight and wind load when the frame is at different elevation angles are calculated. The displacement characteristics of the rack and the stress distribution in the weak position were investigated.The results show that the condenser still has a good geometric “Bao Bao ” ability at the level of 8 wind load (17.1 m / s) And the structure is in a safe condition during wind-resistant operation and 12-strong windsurfing.