高温冲击下三偏心蝶阀的密封性能

某三偏心金属蝶阀在工作中承受瞬时高温、高压冲击,为探索该环境工况对蝶阀密封性能的影响,采用Ansys软件对蝶阀进行热-结构间接耦合分析,研究高温、高压冲击下蝶阀的变形、应力分布和密封特性.蝶阀的温度分布结果表明瞬间的高温仅造成蝶阀温度升高0.23 K,而3.0 MPa的冲击可使得阀门密封面之间的接触应力平均增大60.0 MPa.密封比压的增大表明阀门在冲击下密封情况良好,分析结果可为特殊工况条件下三偏心蝶阀的选型与改进提供指导.

Sealing performance of three eccentric butterfly valve under high temperature impact

A three eccentric metal butterfly valve withstands instantaneous high temperature and high pressure impact during operation. To explore the influence of this environmental condition on the sealing performance of the butterfly valve, the indirect thermal structural coupling analysis of the butterfly valve is carried out by Ansys software, and then the deformation, stress distribution and sealing performance of the butterfly valve under high temperature and high pressure impact are studied. The temperature distribution results of the butterfly valve show that the instantaneous high temperature only causes the butterfly valve temperature to rise by 0.23 K, and the impact of 3.0 MPa can make the contact stress between valve sealing surfaces increase by 60.0 MPa on average. The increase of sealing pressure indicates that the valve is well sealing under the impact. The analysis results can provide guidance for the selection and improvement of three eccentric butterfly valve under special working conditions.