%0 Journal Article
%T 控制棒水压驱动系统水压缸升压过程机理<br>Boost pressure mechanism in hydraulic cylinders for control rod hydraulic drive systems
%A 刘潜峰
%A 薄涵亮
%A 秦本科
%J 清华大学学报（自然科学版）
%D 2015
%R 10.16511/j.cnki.qhdxxb.2015.24.009
%X 就控制棒水压驱动系统(CRHDS)运行过程中所出现的工况, 利用流体力学理论方式研究分析了水压缸步进过程。首先建立了水压缸升压理论模型,对水压缸升压过程进行了分析; 其次, 根据实验运行工况, 计算得出了水压缸运行性能, 并利用实验数据验证了计算结果。计算结果表明: 在升压过程中, 当内套停止运动后, 缸内压力出现拐点; 内套位移增加, 速度逐步减小; 由于缸内压力增加, 缸内和缸外的压差增大, 密封环泄漏流速增大。缸内压力模型能够提供各个所需的物理量, 为水压缸和驱动机构运动机理分析提供了理论基础。<br>Abstract：The stepping of a hydraulic cylinder was analyzed based on the fluid mechanics for a control rod hydraulic drive system (CRHDS). The pressure transient was analyzed experimentally and theoretically for abnormal operating conditions. The results show that as the cylinder pressure increases, the pressure has an inflexion point when the inner cylinder reaches the top. The inner cylinder displacement increases while the speed of the inner cylinder decrease as the pressure increases. The flow velocity at the sealing ring increases due to the higher pressure between the two surfaces of the inner cylinder. This mechanism can be used to analyze the cylinder performance.
%K 控制棒水压驱动系统(CRHDS)
%K 水压缸
%K 升压模型
%K &lt
%K br&gt
%K control rod hydraulic drive system (CRHDS)
%K hydraulic cylinders
%K model for boost pressure
%U http://jst.tsinghuajournals.com/CN/Y2015/V55/I12/1324