控制棒水压驱动机构水压缸步降过程研究  

Study on Step-Down Dynamic Process of Hydraulic Cylinder for Control Rod Hydraulic Drive Mechanism

作　　者：秦本科[1] 薄涵亮[1] 郑文祥[1] 王大中[1] 

机构地区：[1]清华大学核能与新能源技术研究院,先进反应堆工程与安全教育部重点实验室,北京100084

出　　处：《原子能科学技术》2009年第4期345-349,共5页Atomic Energy Science and Technology

基　　金：清华大学“九八五”基金资助项目(985-01-04-014)

摘　　要：水压缸是控制棒水压驱动机构的关键部件,根据水压缸步降运动过程特点,将水压缸步降过程缸内压力变化划分为步降前卸压过程和步降降压过程两个阶段,分别建立了两个阶段压力变化理论模型。其中,步降降压过程理论模型结合水压缸步降运动学模型,又得到了水压缸步降过程动力学模型。理论模型计算结果与控制棒水压驱动机构单缸步进性能实验结果进行了对比,结果表明,在实验配重载荷工况下,理论压力变化和位移曲线很好地符合了实验曲线,从而为水压缸步降压力变化过程影响因素的确定及控制棒水压驱动系统步进时间的获得提供了理论基础。Hydraulic cylinder （HC） is the key component of the control rod hydraulic drive mechanism （CRHDM）. According to the characteristics of HC step-down process, the pressure transients in the HC during step-down process can be divided into two processes, that is, the pressure transients before step-down motion and the pressure transients during step-down motion. Theoretical dynamic pressure models of these two processes were built. And among them, the theoretical dynamic pressure model during HC step-down motion can be combined with the HC step-down kinematics model to establish a complete HC step-down dynamic model. The comparison between the theoretical results and the CRHDM single cylinder experiment shows that, under the experimental loadings, the theoretical dynamic pressure transients during the HC step- down process and the HC step-down displacements agree with the experimental results. The research results have laid the theoretical foundation for the acquisition of the key factors affecting the pressure transients of the HC during step-down process and the step motion time of the CRHDM.

关 键 词：控制棒水压驱动机构 水压缸 步降过程 

分 类 号：TL351.5[核科学技术—核技术及应用] TH137.51[机械工程—机械制造及自动化]