TY - CHAP

T1 - Systematic study of the effect of non-uniform seal stiffness on the contact stress in flat-faced soft-seated spring operated pressure relief valves

AU - Schimanowski, Alex

AU - Seibel, Arthur

AU - Schlattmann, Josef

N1 - Conference code: 4

PY - 2018/11/9

Y1 - 2018/11/9

N2 - 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.

AB - 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.

KW - Engineering

UR - http://www.scopus.com/inward/record.url?scp=85060365973&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/258ae678-6343-3c02-acd6-ecf1a6d29f0f/

U2 - 10.1115/IMECE2018-87926

DO - 10.1115/IMECE2018-87926

M3 - Article in conference proceedings

AN - SCOPUS:85060365973

T3 - ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)

BT - ASME 2018 International Mechanical Engineering Congress and Exposition

PB - The American Society of Mechanical Engineers(ASME)

T2 - ASME 2018 International Mechanical Engineering Congress and Exposition - IMECE 2018

Y2 - 9 November 2018 through 15 November 2018

ER -