Control rod hydraulic drive mechanism (CRHDM ) is a new type of in-vessel control rod drive technology .Hydraulic absorber is one of the key parts of control rod hydraulic drive line .It is used to buffer control rod w hen the rod scrams to prevent the cross-blades of control rod from deformation and damage .Based on the working process of the hydraulic absorber ,a theoretical model of the buffering process was established . Calculation results of the theoretical model agree well with the experiment results .The trend of pressure change in absorber cylinder , the displacement and velocity of the piston and buffering force during the buffering process were obtained from the calculation results of the theoretical model .T hen influence parameters about cushioning characteristics were analyzed ,which laid foundation for optimal design of the hydraulic absorber .%控制棒水压驱动机构是一种新型的内置式控制棒驱动机构，水力缓冲器是控制棒水压驱动机构的关键部件之一，在快速落棒过程中对控制棒进行水力缓冲，避免控制棒十字翼发生变形和损坏。依据水力缓冲器的工作过程原理建立了缓冲过程理论模型，并通过实验验证了理论模型的正确性。根据水力缓冲器缓冲过程理论模型，计算得到缓冲过程中缓冲缸内压力、柱塞位移、速度、缓冲力等关键性能参数的动态变化过程，同时对缓冲特性影响参数进行研究，为水力缓冲器的设计和优化提供了理论依据。
展开▼
