控制棒水压驱动系统水压缸参数特性分析

Analysis of Parameter Characteristics of Hydraulic Cylinder Motion for Control Rod Hydraulic Drive System

控制棒水压驱动技术是清华大学核能与新能源技术研究院具有自主知识产权的一项新型发明专利技术。水压缸属于该项技术的关键部件,水压缸的性能直接影响控制棒水压驱动技术的运行性能。本文建立了水压缸理论模型并进行了实验验证,对影响水压缸运行的主要参数进行了参数特性分析。计算结果表明,泵扬程、管道长度及直径、弹簧系数、外界载荷、密封环泄漏通道宽度,直接影响水压缸内套运动时间和水压缸内套运动到终点的瞬间冲击能量。其中,泵扬程、管道长度和管道直径对水压缸运动影响较大。本文结果为水压缸和驱动机构的驱动力优化奠定了分析基础。

Hydraulic control rod drive technology （HCRDT） is a newly invented patent of Institute of Nuclear and New Energy Technology of Tsinghua University own independent intellectual property rights. The hydraulic cylinder is the key part of this technology, so the performance of the hydraulic cylinder directly affects the HCRDT. The theory model of the hydraulic cylinder was obtained and verified by the experiment. The parameters of the hydraulic cylinder were analyzed. The results show that the pressure of pump, the length and the diameter of the pipe, the external load, the coefficient of the spring, the width of the passageway of the seal ring affect the performance of the hydraulic cylinder, including the motion time of the hydraulic cylinder and the transient impact energy of the hydraulic cylinder arrival. Especially, the pressure of pump, the length of the pipe and the diameter of the pipe affect the hydraulic cylinder motion more largely. Furthermore, the hydraulic cylinder and the drive mechanism can be optimized based on the result.