摘要
本文利用有限元ANSYS软件对高温下法兰连接所采用的八角型垫片进行模拟研究,对高温工况下垫片上的应力变化情况进行分析,从而验证垫片的可靠性。通过研究可得出:垫片上温度的分布周向较均匀,径向由内向外存在明显递减梯度;高温下,垫片材质的膨胀量较大,与法兰密封面压得更紧,相比下垫片上的应力增大较多。
In this paper, the finite element ANSYS software was used to simulate the octagonal gasket used in flange connection at high temperature, and the stress changes on gasket at high temperature were analyzed to verify the reliability of gasket. Through the research, it can be concluded that the temperature distribution on the gasket is more uniform in circumference, and the radial gradient decreases obviously from inside to outside. At high temperature,the expansion of gasket material is larger, and the pressure on the gasket is tighter than that on the flange sealing surface, and the stress on the gasket increases more than that on the underlying gasket.
作者
李杜娟
LI Dujuan(Shaanxi Petroleum and Chemical Engineering School,Xi’an Shaanxi 710061)
出处
《河南科技》
2019年第4期79-81,共3页
Henan Science and Technology
关键词
高温
八角型垫片
有限元
应力
high temperature
octagonal gasket
finite element
stress
