60MJ飞轮储能系统转子芯轴结构设计

发布时间：2018-04-03 02:07

本文选题：飞轮储能系统　切入点：合金钢　出处：《储能科学与技术》2016年04期

【摘要】：研究设计额定转速为2700 r/min、储能量为60 MJ的合金钢飞轮,以实现石油钻机动力系统飞轮单机MW级输出功率。飞轮材料为35Cr Mo A合金钢,采用"H"形变截面,直径1600 mm,厚380 mm,质量4000 kg。芯轴与轮毂局部过盈配合,采用圆柱销传递飞轮与芯轴之间的扭矩。有限元计算表明,轮辐内厚外薄,实现近似等强度设计;轮缘加厚,调整质量分布,实现大转动惯量;底部圆柱销传递扭矩,局部应力比键连接优化。飞轮轴系具备2.5倍应力安全系数,额定转速下最大应力小于500 MPa。2016年3月飞轮设备调试成功,实现150~200 k W充电、500~1000 k W放电功能,储能密度4.17 W·h/kg,比功率250 W/kg,标志着我国具备了单机WM级飞轮储能设备研制能力。
[Abstract]:An alloy steel flywheel with rated rotational speed of 2700 r / min and storage energy of 60 MJ is designed to realize the output power of a single flywheel of a petroleum drilling rig power system.The flywheel is made of 35Cr Mo A alloy steel with "H" deformation cross section, with a diameter of 1600 mm, a thickness of 380mm and a mass of 4000 kg.Core shaft and hub local interference fit, using cylindrical pin transfer between the flywheel and core shaft torque.The finite element calculation shows that the inner thickness and outer thickness of the spoke can be approximately equal strength design; the flange is thickened and the mass distribution is adjusted to achieve a large moment of inertia; the transmission torque of the bottom cylinder pin is optimized; and the connection of the local stress ratio bond is optimized.The flywheel shafting has a stress safety factor of 2.5 times, and the maximum stress under rated speed is less than 500 MPa.2016. In March, the flywheel equipment was debugged successfully, and the discharge function of 500kW was realized by charging 150,200kW with 500kW.The energy storage density is 4.17 W / kg, and the power is 250 W / kg, which indicates that China has the capability of developing single WM flywheel energy storage equipment.
【作者单位】：清华大学工程物理系;中国石化中原石油工程有限公司;
【基金】：国家科技支撑计划(2014BAA04B02)
【分类号】：TH133.7;TK02

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