Dynamic and static sealing performance of elastic check valve spool

Cao, Chao; Zhao, Jun; Li, Gulin; Jin, Xin; Cao, Zijian

doi:10.1049/joe.2018.8979

Cited by 3 publications

(1 citation statement)

References 9 publications

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“…The seal performance is jointly affected by the contact pressure, pressure difference inside and outside the seal chamber, and seal structure and materials. 19 The seal surface is an important starting point in studying the seal state. From a microscopic perspective, existing processing technologies cannot obtain an absolutely smooth surface, and there must be various deviations from the ideal surface.…”

Section: Leakage Model Of the Valve Sealmentioning

confidence: 99%

Method of predicting valve seal leakage considering deflection of the spool

Guo

Xiang

Chen

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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The small angular deflection of the spool under the action of non-equilibrium force is a main reason for valve seal failure. In the present study, a prediction model of the valve seal leakage was established considering the sectional shape and channel height of the leakage channel. The effect of spool deflection on the leakage rate was analyzed quantitatively from the results of three-dimensional finite element mechanical analysis. The microscale leakage channel of a contact deformation surface was then generated through the reconstruction of the rough surface with nanoscale precision, deterministic rough-peak contact analysis, and lattice leakage theory. The results showed that the spool deflection was the key factor affecting the leakage rate. The leakage rate was measured on a self-built experimental platform, and the experimental results verified the accuracy of the theoretical calculations.

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Section: Leakage Model Of the Valve Sealmentioning

confidence: 99%