高温超高压金属弹性环密封技术研究

Technological Research on New-type Sealing Structure under High Temperature and Ultra-high Pressure

针对氟橡胶O型圈只能使用在210℃、210 MPa的难题,设计了一种新型弹性环密封结构。该新型弹性环密封结构能使氟橡胶O型圈在250℃、250 MPa工况下安装简便、可靠密封。通过有限元分析方法,针对弹性环密封结构中的弹性环,分析各结构参数对弹性环的应力和变形的影响,快速、准确确定弹性密封结构尺寸。该密封结构在一定程度上可替代金属密封结构。

A new type of elastic ring sealing structure is designed for the conundrum that the fluorine rubber O ring can be only used at the work environment below 210℃、210 MPa.The designed new type of elastic ring sealing structure is with fixing convenience and enable fluorine rubber O ring to achieve a reliable seal at 250 ℃ and 250 MPa. By using finite element method, the effect of the structural parameters on stress and deformation of the elastic ring is analyzed, the reasonable size of the seal structure can be determined quickly and exactly. This seal structure could substitute for metal seal structure. It economize on cost enormously and improve work efficiency.