Study on the influence of rubber isolator's dynamic stiffness on the dynamic behavior of seawater hydraulic piston pump

Wang, Huawei; Cao, Shuqian; Luo, Xiaohui; He, X. Q.; Zhang, Zuti; Zhu, Yuquan

doi:10.1016/j.oceaneng.2019.04.050

Cited by 14 publications

(7 citation statements)

References 17 publications

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“…The results show that the suspension gasket with high damping and low stiffness has better vibration isolation performance. Wang et al [4] examined the impact of the dynamic stiffness of rubber isolators on the vibration behavior of the seawater hydraulic piston pump system. Their investigation, which entailed a hammering experiment, revealed an improvement in the vibration attenuation with heightened dynamic stiffness of the rubber isolators.…”

Section: Introductionmentioning

confidence: 99%

Design and vibration characteristics of sandwich constrained damping gasket for diaphragm air pump

Hao,

Chen,

Wang

et al. 2024

J. Phys.: Conf. Ser.

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There are certain problems of vibration reduction and isolation relevant to the working stability of diaphragm air pumps. To make the diaphragm air pump meet the use requirements, a sandwich-constrained damping gasket is designed and prepared in this paper. The research focuses on examining the impact of varying damping layer thickness on the efficacy of damping gaskets in reducing and isolating vibrations. Meanwhile, with the increase of the damping layer thickness, the total vibration severity of the diaphragm air pump body continues to increase, indicating a weakened performance of vibration reduction, while the vibration isolation performance is gradually improved.

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Section: Introductionmentioning

confidence: 99%

Design and vibration characteristics of sandwich constrained damping gasket for diaphragm air pump

Hao,

Chen,

Wang

et al. 2024

J. Phys.: Conf. Ser.

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Section: Introductionmentioning

confidence: 99%

“…These advantages promote the seawater hydraulics widely be applied on underwater devices, such as the variable ballast system (VBS), operating systems, bilge drainage system, high pressure water mist fire suppression system, high pressure water jet propulsion system, and other key subsystems of marine equipment. [4][5][6][7][8][9][10] SWHRV is an important indispensable safety and control device to make the operating pressure of 1 School of Power and Mechanical Engineering, Wuhan University, Wuhan, Hubei, China 2 seawater hydraulics circuit maintain at a preset range and prevent the system from overpressure and damage by releasing excess fluid. It makes the Seawater-Hydraulic-System operate within the safety pressure range and guarantee the safety of the whole Seawater-Hydraulic-System.…”

Section: Introductionmentioning

confidence: 99%

Research on the dynamic characteristic of a Seawater-Hydraulic-Relief-Valve with a damping orifice

Zhang

Bao

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part C:

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Seawater-Hydraulic-Relief-Valve (SWHRV) is a significant control component for Seawater-Hydraulic-System in underwater equipment. It makes the Seawater-Hydraulic-System operate within the relief pressure range and ensure the safety of the whole Seawater-Hydraulic-System. The performance of a SWHRV with an orifice and damping chamber is researched in this paper. The nonlinear mathematic model is built based on the operation principal and the visualization graphic simulation model is built by use of AMESim software. The simulation results indicates it has well static performances and satisfies the industrial requirements. Its rated opening pressure is 100 bar, and the releasing flowrate reaches 100 l/min when the pressure increase to 107 bar. The pressure adjusting range is between 100 bar and 205 bar. And the maximum releasing flowrate is as high as 1600 l/min at the pressure of 205 bar. Due to the damping orifice and chamber, a damping force would generate accompanying with the dynamitic motion of the spool. The opening dynamic characteristic is evidently improved though the shutting time becomes longer in comparison with the relief valve without orifice. The pressure oscillation is eliminated and it could reach the steady state ultimately. Furthermore, the effect of the damping orifice and chamber’s structure parameters on the dynamitic characteristic is analyzed. The orifice’s cross-sectional area is the main effect factor and the influence of the initial chamber volume can be neglected. Finally, the relief valve achieves well dynamic characteristic with the peak time 0.003 s and the transition time 0.015 s. The overshoot is about 20%. It has well performance with fast response, small overshoot and strong robustness.

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“…However, one of the most significant current discussions regarding axial plunger pumps is how to reduce cavitation. Although many previous studies of axial plunger pumps have mainly concerned the cavitation of relief grooves (Tsukiji, 2015;Zhang, 2019) and cylinder vibration (Wang et al, 2019), research on reducing cavitation in the plunger chamber of axial plunger pumps can hardly be found. In the present article, the cause and distribution of gaseous and vaporous cavitation in axial plunger pumps are analyzed.…”

Section: Introductionmentioning

confidence: 99%

Hydraulic axial plunger pump: gaseous and vaporous cavitation characteristics and optimization method

Suo

Jiang

Wang

2021

Engineering Applications of Computational Fluid Mechanics

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Gaseous and vaporous cavitation have extremely harmful effects on hydraulic axial plunger pumps, reducing flowrate and increasing flow pulsation. The collapse of vapor bubbles strongly impacts the inner wall and produces many pits. Therefore, it is very important to reduce gaseous and vaporous cavitation to improve the performance of hydraulic axial plunger pumps. In this work, a full cavitation model and a compressible model are used to simulate the two kinds of cavitation, which are validated by a series of experiments. It is found that the vapor and gaseous bubbles in the plunger chamber collapse owing to pressurization caused by the water hammer effect. The results show that a better combination of plunger chamber radius and swash plate angle can reduce the two kinds of cavitation when the theoretical flowrate is unchanged; increasing the angle of the inlet of valve plate can effectively reduce its cavitation and increase the filling mass of plunger chambers; increasing the angle of the relief groove can significantly reduce its vapor and gaseous volume fraction. The results can provide a useful reference for reducing gaseous and vaporous cavitation in the optimization and design of hydraulic axial plunger pumps.

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Study on the influence of rubber isolator's dynamic stiffness on the dynamic behavior of seawater hydraulic piston pump

Cited by 14 publications

References 17 publications

Design and vibration characteristics of sandwich constrained damping gasket for diaphragm air pump

Design and vibration characteristics of sandwich constrained damping gasket for diaphragm air pump

Research on the dynamic characteristic of a Seawater-Hydraulic-Relief-Valve with a damping orifice

Hydraulic axial plunger pump: gaseous and vaporous cavitation characteristics and optimization method

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