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清华大学学报(自然科学版)  2015, Vol. 55 Issue (12): 1324-1331    DOI: 10.16511/j.cnki.qhdxxb.2015.24.009
  核能与新能源工程 本期目录 | 过刊浏览 | 高级检索 |
控制棒水压驱动系统水压缸升压过程机理
刘潜峰, 薄涵亮, 秦本科
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
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
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摘要 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。
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刘潜峰
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秦本科
关键词 控制棒水压驱动系统(CRHDS)水压缸升压模型    
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.
Key wordscontrol rod hydraulic drive system (CRHDS)    hydraulic cylinders    model for boost pressure
收稿日期: 2014-04-13      出版日期: 2015-12-15
ZTFLH:  TL351+.5  
引用本文:   
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.
链接本文:  
http://jst.tsinghuajournals.com/CN/10.16511/j.cnki.qhdxxb.2015.24.009  或          http://jst.tsinghuajournals.com/CN/Y2015/V55/I12/1324
  图1 提升缸装配图
  图2 密封环
  图3 水压缸充压物理模型
  图4 泵性能曲线
  表1 充压计算模型
  图5 模型求解过程
  图6 当外界载荷30kg时提升缸物理量实验数值与计算数值比较
  表2 内套运动物理量
  图7 模型各个物理量变化情况
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