A Study on Sealing Mechanism of Butterfly Valve

Huh, Jung-Bo; Jung, Yong Gil; Park, Won Jo; Sim, Jae Joon

doi:10.4028/0-87849-415-4.1259

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2012

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“…1 Comparing with conventional butterfly valves, TOBV presents a more complex structure, which requires a higher standard for design. Unsuccessful design usually results in leakage and interference at the seal interface, 2,3 thus compromising the performance and service time of the valve. When designing the geometrical structure of butterfly valves, determining appropriate parameters is the key task.…”

Section: Introductionmentioning

confidence: 99%

Mathematical modeling of the interference of seal pair in triple-offset butterfly valve

Kan

Jin²,

Ding

et al. 2012

Proceedings of the Institution of Mechanical Engineers, Part C:

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Avoiding interference of seal pair in triple-offset butterfly valve is critical to its performance and service time. In this article, a mathematical model is proposed for the seal interface. A formula is derived to evaluate the interference of seal pair in triple-offset butterfly valve. Five parameters are considered, including the diameter of valve disc, the effective sealing thickness, axial offset, radial offset, and eccentric angle. The influences of axial offset, radial offset, and eccentric angle on the interference area and position are investigated. The results show that the interference area decreases initially and increases finally when either the axial offset or the eccentric angle increases, whereas it decreases monotonously as the radial offset increases.

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Section: Introductionmentioning

confidence: 99%