On possibility of suppressing self-excited oscillations of relief and check valves by actions on pipeline performance

Шорин, В. П.; Sverbilov, Victor

doi:10.5739/isfp.1993.465

Cited by 4 publications

(3 citation statements)

References 2 publications

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“…5. Different results are obtained for the check valve [11]. Its diagram is similar to the relief valve's (Figure 1 a) and a distinctive feature is a low pressure drop at a high inlet pressure.…”

Section: Stability Analysismentioning

confidence: 84%

“…So suppressing forced oscillations is based on the correcting devices' ability to dissipate and to redistribute flow oscil-lations energy [9, 12, 13 and 17]. The efficiency to eliminate self-excited oscillations is defined by regulators' sensitivity to variations of boundary conditions and by the correcting devices' ability to form desired pipe lines dynamic characteristics [10,11].…”

Section: Introductionmentioning

confidence: 99%

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Effect of connected system on gas pressure controllers’ stability

Sverbilov¹

2014

Journal of Dynamics and Vibroacoustics

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In the paper the influence of dynamic performances of pipe systems connected to the control valve on system stability is studied through mathematical modeling and experimental work. Dynamic interaction between typical pressure control valves and up-and downstream pipelines is investigated. Stability criteria are derived in the form of requirements for input impedances of pipes connected. The best and the worse boundary conditions are deduced for each type of controllers. The best boundary conditions ensure stability even in a case of zero damping of the poppet. The worse boundary conditions determine maximum damping required to keep stability in any other system. To meet the requirements received, effective measures are suggested for each type of the control valve on the basis of special corrective devices (compensators) of the acoustic filter type. A scheme, parameters and location of the devices are determined by the type and parameters of the valve.

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Section: Stability Analysismentioning

confidence: 84%

Section: Introductionmentioning

confidence: 99%

Effect of connected system on gas pressure controllers’ stability

Sverbilov¹

2014

Journal of Dynamics and Vibroacoustics

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“…The L and the C values are determined by Taking into consideration (2) and (3) it can be written: (4) from which it obviously follows that the device's overall dimensions decrease at a fixed co accompanies with the increase of its hydraulic resistance P.…”

Section: Correcting Devices Modelsmentioning

confidence: 99%

Correcting Devices for Control Systems

Sverbilov

Shestacov

Шорин

1996

Proceedings of the JFPS International Symposium on Fluid Power

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Computational Fluid Dynamics Modeling of Gaseous Cavitation in Lubricating Vane Pumps: On Metering Grooves for Pressure Ripple Optimization

Stuppioni

Blum²,

Suman

et al. 2022

Journal of Fluids Engineering

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This paper addresses the topic of balanced vane pump simulations for pressure ripple optimization by means of metering grooves at the leading edge of delivery ports. It presents a computational fluid dynamics case study based on a transient three-dimensional model developed using an up-to-date commercial software tool. Special attention is dedicated to gaseous cavitation and the impact of the related modeling choices on predictions. The effect of groove dimensions and interaction with the precompression features of the cam ring of the pump are addressed. Experimental data obtained using a dedicated test rig are presented for comparison with numerical results in terms of delivery pressure ripple and volumetric flowrate. A validation strategy based on tuning of the dynamic cavitation model adopted for simulations is proposed. The results demonstrate the critical importance of gas release modeling for the simulation of porting details in the case of significant aeration effects.

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On possibility of suppressing self-excited oscillations of relief and check valves by actions on pipeline performance

Cited by 4 publications

References 2 publications

Effect of connected system on gas pressure controllers’ stability

Effect of connected system on gas pressure controllers’ stability

Correcting Devices for Control Systems

Computational Fluid Dynamics Modeling of Gaseous Cavitation in Lubricating Vane Pumps: On Metering Grooves for Pressure Ripple Optimization

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