Stability Analysis of a Pilot Operated Counterbalance Valve for a Big Flow Rate

Yao, Yeming; Zhou, Hua; Chen, Yinglong; Yang, Huayong

doi:10.1115/fpmc2014-7806

Cited by 6 publications

(2 citation statements)

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“…Similar instabilities can also be present in other valve topologies e.g. Sverbilov et al (2013); Yao et al (2014), Venturi valves Zhang and Engeda (2003) and hydraulic dampers with blow-down Eyres et al (2005a,b).…”

Section: Introductionmentioning

confidence: 83%

Dynamic behaviour of direct spring loaded pressure relief valves connected to inlet piping: IV review and recommendations

Hős

Champneys

Paul

et al. 2017

Journal of Loss Prevention in the Process Industries

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General rightsThis document is made available in accordance with publisher policies. Please cite only the published version using the reference above. AbstractRecent progress by a number of different groups and authors is reviewed on the stability properties of direct-spring pressure relief valves connected to pressure vessels with or without piping systems. Various different notions of stability and mechanisms for instability are revealed both in the case of gas and liquid service. It is stressed that it is not the valve itself that is stable or unstable, rather the harmful vibrations arise through interactions between the valve and its surroundings -the inlet piping, the reservoir, and any outlet piping. A distinction is drawn between underlying instability mechanisms and how these may be triggered during transient operations. The purpose of the work is to provide a coherent simplified account that will be of practical use for proposing new operational guidelines and mitigation strategies. Among these various mechanisms, oscillatory instability due to the interaction with a quarter-wave acoustic mode in the inlet piping is argued to be the most important to mitigate.

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Section: Introductionmentioning

confidence: 83%

Dynamic behaviour of direct spring loaded pressure relief valves connected to inlet piping: IV review and recommendations

Hős

Champneys

Paul

et al. 2017

Journal of Loss Prevention in the Process Industries

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“…In addition, their function is to prevent cavitation, which is particularly important for the durability of the hydraulic system. These valves can regulate the pressure, which may be too small due to low pump displacement and too fast movement of the piston rod [28][29][30][31][32]. The counterbalance valves have the advantage over the pilot-operated check valves that the latter cannot work under overload conditions [26].…”

Section: Braking With a Counterbalance Valvementioning

confidence: 99%

Energy Efficiency and Limitations of the Methods of Controlling the Hydraulic Cylinder Piston Rod under Various Load Conditions

2021

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The article is an overview of various methods of braking and controlling the movement of the piston rod under various load conditions. The purpose of this review is to systematize the state of the art in terms of efficiency, energy consumption and limitations of each method. The article discusses systems with different types of hydraulic actuators, operating under passive, active and variable load during the duty cycle of the piston rod. The existing literature was analysed in terms of applicability, reduction of energy consumption of the systems and even the possibility of energy return. Attention was paid to the costs and the need for additional power sources, as well as the problems and limitations of the presented methods. Based on the simulation model, energy consumption tests were carried out in systems with an actuator loaded with a variable force. There is a comparison of all methods in terms of actuator type, load, energy consumption and the possibility of energy recovery.

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