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首页> 外文会议>International conference on nuclear engineering >NUMERICAL AND EXPERIMENTAL ANALYSIS OF THE CONTROL ROD HYDRAULIC DECELERATION DEVICE FOR THE CONTROL ROD HYDRAULIC DRIVE SYSTEM
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NUMERICAL AND EXPERIMENTAL ANALYSIS OF THE CONTROL ROD HYDRAULIC DECELERATION DEVICE FOR THE CONTROL ROD HYDRAULIC DRIVE SYSTEM

机译：控制杆液压驱动系统控制杆液压减速装置的数值与实验分析

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Control rod hydraulic drive system (CRHDS), which is invented by INET, Tsinghua University, is a new type of internal control rod drive technology. Control rod hydraulic deceleration device (CRHDD), which consists of the plug, the hydraulic deceleration cylinder, the hydraulic buffer, etc., is one of the main components of the CRHDS. The plug is connected with the top of the control rod driving shaft and moves along with the control rod inside the hydraulic deceleration cylinder. The CRHDD performs the rod dropping deceleration function through the interworking of the plug and the deceleration cylinder which is filled with water, and reduces the rod dropping peak acceleration and the impact force acting upon the control rod to prevent the control rod cruciform blade from being deformed or damaged. The working mechanism of the CRHDD is presented and analyzed. The rod dropping performance of the CRHDS was tested experimentally under room temperature. The theoretical model of the control rod dropping process, which is composed of the three dimensional flow field analysis and flow resistance calculation of the hydraulic deceleration cylinder, the kinematics and dynamics model of the control rod, is built whose results are compared and validated by the CRHDS scram test results under room temperature. Then the model takes into account of the influence of the fuel assembly box on the control rod scram process under high temperature working conditions, and is used to analyze the influence of the key parameters, including the helical spring stiffness inside the deceleration cylinder and the working temperature on the CRHDD working performance. The research results can give guidance for the design and optimization of the CRHDD.
机译：清华大学INET发明的控制杆液压驱动系统（CRHDS）是一种新型的内部控制杆驱动技术。由塞子，液压减速缸，液压缓冲器等组成的控制杆液压减速装置（CRHDD）是CRHDS的主要组件之一。塞子与控制杆驱动轴的顶部连接，并与控制杆一起在液压减速缸内移动。 CRHDD通过塞子和充满水的减速缸的相互作用来执行落杆减速功能，并减小落杆峰值加速度和作用在控制杆上的冲击力，以防止控制杆十字形叶片变形或损坏。介绍并分析了CRHDD的工作机制。 CRHDS的落锤性能在室温下进行了实验测试。建立了控制杆掉落过程的理论模型，该模型由液压减速缸的三维流场分析和流阻计算，控制杆的运动学和动力学模型组成，其结果经过比较和验证。室温下CRHDS scram测试结果。然后，该模型考虑了高温条件下燃油总成箱对控制杆急停过程的影响，并用于分析关键参数的影响，包括减速缸内部的螺旋弹簧刚度和工作情况。温度对CRHDD工作性能的影响。研究结果可为CRHDD的设计和优化提供指导。

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