3000m深水闸阀应力分类与强度评定

Stress Classification and Strength Estimate for 3000m Deep Water Gate Valve

针对闸阀传统设计方法和有限元设计方法的不足,提出闸阀应力分类设计方法。介绍了应力分类的思想和应力强度评定准则,采用有限元方法得到了闸阀各部件应力分布状况,并且沿校核线对应力进行了等效线性化分解。结合闸阀各部件最大等效应力具体位置和结构特点,对深水闸阀各部件进行了应力分类,分析了不同性质的应力与等效线性化分解所得应力之间的关系,利用"等安全裕度"原则对闸阀各部件进行了强度评定,发现各部件均满足强度要求。

In view af the shortcomings of traditional design method and the finite element method of the gate valve, the stress classifwation of the gate valve is put forward. The idea of stress classification and stress strength estimate criterion are recommended, the stress distribution of gate valve parts are got by using finite element method, and the decomposition of equivalent linearization is accomplished along stress check line. Combining maximum equivalent stress location of gate valve parts and the structure characteristics, the stress classification of deep water gate valve parts is carried out, and the relationship between the different properties stress and the stress from decomposition of equivalent linearization is analyzed. Strength evaluation for gate valve parts are completed by using the identical safety margin principle, finding that strength for parts satisfies the requirements.