변탄성 스프링을 이용한 고정밀 직동형 릴리프 밸브High-Precision Direct-Operated Relief Valve with a Variable Elasticity Spring
- Other Titles
- High-Precision Direct-Operated Relief Valve with a Variable Elasticity Spring
- Authors
- 김성동
- Issue Date
- 2020
- Publisher
- 사단법인 유공압건설기계학회
- Keywords
- 릴리프 밸브; 변탄성 스프링; 탄성율; 압력 오버라이드; 유체력; Relief Valve; Variable Elasticity Spring; Elastic Rate; Pressure Override; Flow Force
- Citation
- 드라이브·컨트롤, v.17, no.4, pp.87 - 96
- Journal Title
- 드라이브·컨트롤
- Volume
- 17
- Number
- 4
- Start Page
- 87
- End Page
- 96
- URI
- https://scholarworks.bwise.kr/kumoh/handle/2020.sw.kumoh/18524
- ISSN
- 2671-7972
- Abstract
- In this study, a variable elasticity spring was applied to improve the pressure control precision of conventional relief valves. The equilibrium equation of the forces acting on the valve poppet was derived; it is demonstrated that matching the elastic rate of the pressure-adjusting coil spring to the equivalent elastic rate of the flow force improved the pressure override. The procedures that were used to design the variable elasticity spring are presented, and some applications of the variable elasticity spring are also introduced. Computer simulations were used to analyze three cases: a poppet-closed flow force structure, a poppet-open flow force structure with a constant elasticity spring, and a structure containing a variable elasticity spring. It is confirmed that the pressure control precision of the relief valve can be significantly improved upon by applying a variable elasticity spring to the poppet-open flow force structure.
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Collections - School of Mechanical System Engineering > 1. Journal Articles
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