反应堆压力容器主螺栓粘扣问题的分析与处理

Analysis and Processing of Main Bolt Gluing in RPV

基于反应堆堆压力容器主螺栓的结构及其工况,提出一种均载的、安全系数高的削峰均载螺纹结构。建立大螺栓螺纹连接的数学模型进行限元分析,并与普通螺纹结构比较,验证了该结构的可行性。解决现在的压力容器主螺栓连接结构在使用一段时间后的粘扣现象,使得压力容器主螺栓连接具有更高的安全性、可靠性以及更长的寿命。

Based on the structure and its condition of the main bolt of RPV, this paper puts forward a kind of clipping peak and averaging load structure of the thread, which can equal the load distribution of thread connection.Meanwhile, the mathematical model of bigbolt thread Connection is set up. By using the finite element analysis function, Compare with ordinary screw thread the feasibility of averaging load structure of the thread is validated. This thread structure can eliminates the main bolt gluing and improves the safety, reliability and longer life of the thread connection for the RPV.