"Finite element analysis and validation of nuclear equipment personnel airlock sealing structure"

The Mooney-Rivlin model was used to perform finite element analysis of sealing structure of double-channel O-ring seal for personnel airlock in nuclear power plant, the von Mises stress and contact stress of the O-ring seal at different compression size were simulated, and the sealing performance was verified through a test stand. The results showed that the maximum contact stress between the O-ring and sealing groove was greater than the maximum von Mises stress at different compression size. The sea-ling effect could be achieved when the compression rate was greater than 2% (compression size 0.3 mm). However, the O-ring compression rate took compression size the value of 1.6 mm (compression rate 10.67%) after considering the manufacturing tole-rances and safety margins. The test of stand verified rationality and effectiveness of the double-channel O-ring sealing structure.