埋地大口径蝶阀基于刚度、密封性能的最大弯曲载荷研究

发布时间：2018-05-18 22:10

本文选题：埋地大口径蝶阀 + 刚度　；参考：《流体机械》2017年10期

【摘要】：基于API 6D对管线阀门因弯曲载荷破坏时应具有足够结构强度、刚度及密封性的高要求,采用有限元法对DN2800埋地大口径蝶阀进行刚度、密封性能分析;建立蝶阀抗弯模型,对DN2800蝶阀及系列产品最大弯曲载荷进行研究。结果表明:(1)长期承受附加载荷的DN2800蝶阀密封失效先于刚度失效,所能承受的最大弯曲载荷为密封有效临界弯曲载荷;(2)DN1000 mm系列大口径蝶阀壁厚t、公称直径d与抗弯刚度K、刚度有效临界弯曲载荷M1、密封有效临界弯曲载荷M2间呈二次函数关系,且可承受最大弯曲载荷为M2。研究方法和结论对埋地大口径蝶阀承受最大弯曲载荷的研究提供了参考依据。
[Abstract]:Based on the high requirements of API 6D for structural strength, stiffness and sealing of pipeline valves due to bending load, the stiffness and sealing performance of DN2800 buried large-caliber butterfly valves are analyzed by finite element method, and the bending resistance model of butterfly valves is established. The maximum bending load of DN2800 butterfly valve and series products was studied. The results show that the sealing failure of DN2800 butterfly valve subjected to additional load for a long time is prior to the failure of stiffness. The maximum bending load that can be withstood is the wall thickness t of sealed effective critical bending load and the nominal diameter d and bending stiffness K, the effective critical bending load M1 of stiffness, and the sealed effective critical bending load M2 showing a quadratic function relationship between the nominal diameter d and the bending stiffness K, the effective critical bending load M 2, and the seal effective critical bending load M 2, respectively. And the maximum bending load is M2. The research methods and conclusions provide a reference for the study of the maximum bending load of the buried large diameter butterfly valve.
【作者单位】：合肥通用机械研究院;
【分类号】：TH134

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