Publisher DOI: 10.1115/IMECE2018-87926
Title: Systematic study of the effect of non-uniform seal stiffness on the contact stress in flat-faced soft-seated spring operated pressure relief valves
Language: English
Authors: Schimanowski, Alex 
Seibel, Arthur 
Schlattmann, Josef 
Issue Date: 2018
Publisher: The American Society of Mechanical Engineers
Source: ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE) (13): V013T05A044 (2018)
Abstract (english): Spring operated pressure relief valves (SOPRVs) are essential components of technical systems. As parts of safety systems, they protect people and the environment from technological hazards. Their ability to open at a predefined pressure is considered the most important feature. The reliability of this function depends on numerous operational and design factors. In this paper, we examine the effects of design measures on the mechanical loads in seat seals of SOPRVs. In particular, we evaluate the applicability of the principle of non-uniform system stiffness in order to systematically control the mechanical loads in seat seals for an exemplary case of a flat faced soft seated SOPRV. We systematically vary design parameters and accurately estimate the contact stresses as well as the set pressure by performing non-linear finite element analyses. We focus on the quasi-static case of a closed seal, since dynamic effects of the opening and closing processes are not within the scope of this work. In our contribution, we show that the application of these design measures can significantly influence both the initial contact stresses and the set pressure at a constant spring force. In particular, the effects of the taper angle are analyzed and discussed.
Conference: ASME 2018 International Mechanical Engineering Congress and Exposition, IMECE 2018 
ISBN: 978-0-7918-5218-7
Institute: Laser- und Anlagensystemtechnik G-2 
Type: InProceedings (Aufsatz / Paper einer Konferenz etc.)
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