Structural Parameter Analysis of Self-Tightening Metal U-Shaped Seal Ring

Abstract

The effects of different structural parameters on the sealing performance of self-tightening metal U-shaped seal rings were studied. A two-dimensional axisymmetric model of a self-tightening U-shaped seal ring was established using finite element software. The influence of structural parameters such as side wall thickness, bottom wall thickness and boss radius on the sealing performance of the seal ring was analyzed by the control variable method. The results show that as the thickness of the side wall increases, the stress shows a downward parabolic trend, which is the smallest at 0.55 to 0.65 mm; as the bottom wall thickness increases, the stress first increases steadily, and then decreases slowly after 0.8 to 0.9 mm; When the inclination angle is from 0 to 9 °, the sealing ring can obtain better sealing performance. The results have guiding significance for the design, optimization and application of subsequent seal ring structures.

Research on optimal design of 6in offshore flange connector’s sealing structure

“…Huang [12] et al improved the performance of the seal significantly by using the finite element method to optimize the dip angles, width, and rear support structure of the metal ring sealing surface. Cheng [13] et al used the control variable approach to study the impact of various structural parameters on the self-tightening metal U-shaped sealing ring's sealing performance and came up with the ideal structural size for the sealing ring to retain optimum sealing performance. Ren [14] et al performed multi-objective optimization on VL sealing rings using Isight software, determined the optimal geometric size for the rings and enhanced their sealing capabilities.…”