摘要
飞轮储能是利用高速旋转的转子来储存能量,是一种理想的绿色环保储能方式,高效清洁且寿命持久。由于储能飞轮的储能密度与比强度呈正比的关系,因此开发与制备新型高比强度材料的飞轮转子是提高其储能能力的重要途径。作者叙述了储能飞轮用金属材料的发展历程与应用现状:储能飞轮的研制初期一般采用储能密度较低的金属转子,目前储能飞轮的研究重点已转到密度低而强度高的复合材料飞轮,其最优的转子形状具有沿半径方向中间薄、两端厚的特征,以获得更高的储能密度。阐述了金属转子与轮毂的铸造、锻造、机加工、热处理以及质量检验等加工工艺的研究现状。储能飞轮转子用金属材料的发展最终取决于超高强度钢及合金的开发与研究,如超高纯冶炼技术的发展、热处理工艺的优化等。
Flywheels store mechanical energy in high speed rotating rotors. Long service life and high efficiency are two key features of the energy storage method. Energy storage density of a flywheel is proportional to the specific strength of the rotor materials. Enhancement of rotor material performance is therefore a key aspect of flywheel research. This paper reviews the research and development of metallic materials for flywheel rotors and hubs, and processing and manufacturing technologies for rotors and hubs including casting, forging, machining, heat treatment and quality inspection. Early flywheels often employ metallic rotors, which give a low energy density. Current focus of research is on flywheels consisting of a carbon fiber rim and a metallic hub. Optimal design of high energy density flywheels is featured by a shape with a thin central part and a thick edge. It is concluded that the development of metallic materials for flywheel rotors eventually lies in performance improvement of ultra-high strength steels and alloys.
出处
《储能科学与技术》
CAS
2014年第1期30-35,共6页
Energy Storage Science and Technology
基金
北京市东城区优秀人才培养资助计划
关键词
储能飞轮
转子
金属材料
比强度
储能密度
flywheel
rotor
metallic material
strength
energy-storagedensity
