| 楔形双闸板闸阀密封失效与结构优化 |
| |
| 引用本文： | 王宇峰,何庆中,陈雪峰,赵献丹,刘怡.楔形双闸板闸阀密封失效与结构优化[J].油气储运,2019(6):709-715. |
| |
| 作者姓名： | 王宇峰 何庆中 陈雪峰 赵献丹 刘怡 |
| |
| 作者单位： | 四川理工学院机械工程学院;华夏阀门有限公司 |
| |
| 基金项目： | 四川省教育厅创新团队项目“超(超)临界电站阀门控制工程技术”,17TD0026;自贡市科技支撑项目“AP1000核电站常规岛阀门国产化安全性评价机理研究”,2016JZ16;四川理工学院研究生创新基金项目“长输管线全焊接球阀抗地陷灾害能力研究”,y2017030 |
| |
| 摘 要： | 为了解决楔形双闸板闸阀在实际应用过程中密封失效的问题,利用ANSYS软件对闸阀进行有限元建模,并进行热力耦合分析与密封性能评价。结果表明:在热应力和介质压力作用下,最大Mises应力出现在出口阀座处;出口阀座两条危险路径的3种不同应力强度评定结果均不合格,且出口阀座密封面的最大密封比压超过许用比压。基于以上分析结果,结合闸阀结构,获得了闸阀密封失效原因,进而对闸阀结构进行了优化。结果表明:结构优化后的出口闸阀的最大Mises应力、密封面的最大密封比压均大幅降低,两条危险路径的3种不同应力强度评定结果均达到合格要求,能够有效解决密封失效问题。研究结果可以在楔形双闸板闸阀结构设计与优化方面提供参考借鉴。
|
| 关 键 词： | 闸阀 热力耦合 密封失效 结构优化:ANSYS |
Sealing failure and structural optimization of wedge-shaped double gate valve |
| |
| WANG Yufeng,HE Qingzhong,CHEN Xuefeng,ZHAO Xiandan,LIU Yi.Sealing failure and structural optimization of wedge-shaped double gate valve[J].Oil & Gas Storage and Transportation,2019(6):709-715. |
| |
| Authors: | WANG Yufeng HE Qingzhong CHEN Xuefeng ZHAO Xiandan LIU Yi |
| |
| Institution: | (College of Mechanical Engineering, Sichuan University of Science & Engineering;Huaxia Valve Co. Ltd.) |
| |
| Abstract: | In order to solve the sealing failure of wedge-shaped double gate valve in the process of its practical application,the finite element model of gate valve was established by ANSYS software, and its thermal-mechanical coupling and sealing performance were analyzed in this paper. The results show that the maximum Mises stress appears at the outlet seat under the action of thermal stress and medium pressure. The evaluation results of three different stress strengths on the two dangerous paths of the outlet seat are not qualified, and the maximum sealing specific pressure at the sealing surface of the outlet seat exceeds the allowable specific pressure. Based on above mentioned analysis results, combined with the structure of the gate valve, the reasons for the sealing failure of the gate valve were figured out, and the gate valve was structurally optimized. It is indicated that after structural optimization, the maximum Mises stress at the outlet gate valve and the maximum sealing specific pressure at the sealing surface are greatly reduced and the evaluation results of three different stress strengths on the two dangerous paths are all qualified.Obviously, the problem of sealing failure is solved effectively after structural optimization. The research results can provide the reference for the structural design and optimization of wedge-shaped double gate valve. |
| |
| Keywords: | gate valve thermal-mechanical coupling sealing failure structure optimization ANSYS |
| 本文献已被 CNKI 维普 等数据库收录！ |
|
