Dynamical Model of Leak Measurement by Pneumatic Pressure Change

Harus, Laksana Guntur; Cai, Maolin; Kawashima, Kenji; Kagawa, Toshiharu

doi:10.1007/978-4-431-49022-7_51

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“…2 [1-3]. In the process of pressure decay leak detection, the internal work tank gas pressure is gradually reduced, So there is a certain deviation between tested leakage and actual leakage under constant pressure, especially to small tested tanks, tiny leakage can also cause test chamber within large pressure drop, the deviation is more obvious [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Pressure-Changed Effect on Leakage in Pressure Decay Leak Detection

Zeng

Lin

Chen

et al. 2011

AMM

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The method of pressure decay leak detection measures leakage by detecting interior pressure change of tested tank. As pressure change of tested tank affects leak rate, there is a certain deviation between tested leakage and actual leakage under constant pressure. Currently, all of the international leakage standards are developed under constant pressure conditions, therefore, this leakage deviation is mainly concerned in leak detection. In this paper, a deviation calculated model between tested leakage and actual leakage under constant pressure was developed. And the experimental results showed a good agreement with the model simulation date.

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Section: Introductionmentioning

confidence: 99%