Boost pressure mechanism in hydraulic cylinders for control rod hydraulic drive systems
LIU Qianfeng, BO Hanliang, QIN Benke
Key Laboratory of Advanced Reactor Engineering and Safety of the Ministry of Education, Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China
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.
刘潜峰, 薄涵亮, 秦本科. 控制棒水压驱动系统水压缸升压过程机理[J]. 清华大学学报(自然科学版), 2015, 55(12): 1324-1331.
LIU Qianfeng, BO Hanliang, QIN Benke. Boost pressure mechanism in hydraulic cylinders for control rod hydraulic drive systems. Journal of Tsinghua University(Science and Technology), 2015, 55(12): 1324-1331.