AP1000核电厂单一故障保护起重机冲顶事故动力学分析

Kinetic analysis on collision accident of single-fault fault protection crane of AP1000 nuclear plant

AP1000核电厂单一故障保护起重机要求具备防冲顶特性。基于理论力学的基本方法分析了满载低速冲顶与空载高速冲顶等2种冲顶事故的动力学过程,发现空载高速冲顶事故下钢丝绳的最大拉力远大于满载低速工况,2种事故工况下钢丝绳中的拉力均急剧增加,在制动器抱闸前达到最大值。

The single-fauh fault protection crane of AP1000 nuclear plant shall have anti-collision characteristics. The paper adopts the basic method of theoretical mechanics to analyze the kinetic process of two collision accidents including full-load low-speed collision and no-load high-speed collision. It＇s found that the maximum pull force of steel rope under the no-load high-speed collision accident is far greater than that under full-load low-speed collision. Under the two cases, the pull force of the steel rope increases sharply, and reaches the maximum value before contracting brake.