Assessment of the Dynamics Flow Field of Port Plate Pair of an Axial Piston Pump

Quan, Lingxiao; Gao, Haihai; Guo, Chao; Che, Shichao

doi:10.3390/pr8010086

Cited by 6 publications

(4 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Based on the principles of force equilibrium and the composition theorem for concurrent force systems, it can be deduced that the resultant force F o of the reactive force on the cylinder body in the spherical valve train must also pass through the center of the sphere [14].…”

Section: Analysis Of the Load-bearing Mechanism Of Spherical Distribu...mentioning

confidence: 99%

See 1 more Smart Citation

Research on Bearing Mechanism of Spherical Valve Pairs of Axial Piston Pumps

Xu,

Zhao,

et al. 2024

Actuators

View full text Add to dashboard Cite

The hydraulic system drives the cutter head mechanism to realize the excavation of large tunnel boring equipment, which puts forward the technical requirements of high pressure and large flow to the pump source. The traditional small displacement axial piston pump uses a planar valve plate. However, under high flow and heavy load conditions, the planar valve plate configuration is prone to uneven wear due to the high-pressure and -velocity (PV) value and pressure shock, which ultimately affects the reliability of the system. A simulation analysis of the load-bearing characteristics of the spherical valve plate mechanism is conducted. The Computational Fluid Dynamics (CFD) method was used to construct flow field models for different valve plate oil film structures to calculate differences in their load-bearing capacities. Additionally, the reasons for variations in load-bearing characteristics based on the curvature radius of the spherical valve plate were analyzed. The simulation results demonstrate that the spherical valve plate exhibits superior leak and load-bearing performance compared to the traditional flat valve plate. Furthermore, the curvature radius of the spherical valve plate directly affects the pulsation characteristics of the piston pump. Smaller curvature radii increase the contact area of the oil film, resulting in greater fluctuation in oil film load-bearing, whereas larger curvature radii lead to increased oil film leakage. Using simulation calculations on heavy-load, high-displacement axial piston pumps, it is determined that the optimal curvature radius for stable load-bearing is 350 mm.

show abstract

Section: Analysis Of the Load-bearing Mechanism Of Spherical Distribu...mentioning

confidence: 99%

“…Firstly, the overall pump flow field model of the piston pump is established [14,15]. A 20-micrometer oil film structure between the piston chamber (moving structure) and the inlet/outlet channels (stationary structure) is constructed, and the oil film structure is meshed.…”

Section: Modeling the Oil Film Flow Field In The Valve Platementioning

confidence: 99%

Research on Bearing Mechanism of Spherical Valve Pairs of Axial Piston Pumps

Xu,

Zhao,

et al. 2024

Actuators

View full text Add to dashboard Cite

show abstract

“…The mesh density of the fluid model has a significant influence on the calculation results. Only when the mesh number has little effect on the calculation results, the results of numerical simulation are meaningful, so it is necessary to perform mesh independence verification [48,49].…”

Section: Mesh Independence Verificationmentioning

confidence: 99%

Research on Cavitation of the Rotating-Sleeve Distributing Flow System Considering Different Cam Groove Profiles

Hong

Zhao

et al. 2021

Energies

View full text Add to dashboard Cite

Reciprocating piston pumps are widely used in various fields, such as automobiles, ships, aviation, and engineering machinery. Conventional reciprocating piston pump distributing flow (RPPDF) systems have the disadvantages of a loose structure and low volumetric efficiency, as well as affected positively by the operating frequency. In this paper, a novel rotating-sleeve distributing flow (RSDF) system is presented for bridging these drawbacks, as well as structurally improved to overcome the inoperable and challenging problems in oil intake and discharge found in the experiment. Moreover, the Singhal cavitation model specifically for the RSDF system and four-cam groove profiles (CGPs) is established. To find the most suitable CGP to reduce the RSDF’s cavitation, the cavitation of the RSDF system was investigated, combining with simulations by taking into account the gap among the rotating sleeve, the pump chamber, and experiments on four presented CGPs. Simulation results based on vapor volume fraction, cavitation ratio, and volumetric efficiency show that the linear profile’s cavitation is the weakest. Finally, the correctness of the simulation is verified through orthogonal experiments. This research is of great significance to the further development of the RSDF system; more important, it has great potential to promote the reform of the RPPDF method.

show abstract

“…Quan et al [3] performed an analysis on the flow field of port plate pair of an axial piston pump for different piston speeds and inlet fluid velocities with the use of CFD software. It was found that the scale and strength of vortex reduced with an increase in the piston speed.…”

Section: Papers Presented In the Special Issuementioning

confidence: 99%