Valve Plate Structural Optimal Design and Flow Field Analysis for the Aviation Bidirectional Three-Port Piston Pump

This paper designed and optimized a bidirectional three-port valve plate structure for solving the matching problem of flow rate and pressure in the aerospace pump-controlled differential hydraulic cylinder. This design aims to make the valve plate work well under the bidirectional high-speed condit...

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Main Authors: Xiangyang Li, Yiting Xi, Dunhui Xiao, Jiaxin Tao
Format: Article
Language:English
Published: MDPI AG 2021-06-01
Series:Energies
Subjects:
Online Access:https://www.mdpi.com/1996-1073/14/11/3246
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spelling doaj-05c1c719b15f412b92e15e114a427f5b2021-06-30T23:05:28ZengMDPI AGEnergies1996-10732021-06-01143246324610.3390/en14113246Valve Plate Structural Optimal Design and Flow Field Analysis for the Aviation Bidirectional Three-Port Piston PumpXiangyang Li0Yiting Xi1Dunhui Xiao2Jiaxin Tao3School of Mechanical and Electrical Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, ChinaSchool of Mechanical and Electrical Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, ChinaZCCE, Faculty of Science and Engineering, Swansea University, Swansea SA1 8EN, UKHydraulic Technology Research Institute, Xi’an Aeronautical Institute, Xi’an 710077, ChinaThis paper designed and optimized a bidirectional three-port valve plate structure for solving the matching problem of flow rate and pressure in the aerospace pump-controlled differential hydraulic cylinder. This design aims to make the valve plate work well under the bidirectional high-speed condition. The model was set up using dynamic mesh and sliding mesh, and the simulation is conducted by FLUENT. In addition, the flow field of inlet and outlet flow rate pulsations, pressure pulsation in cylinder, and non-dead-point transition zone of four cases are analyzed to optimize the valve plate in this work. The numerical results show that different angles of non-dead-point transition zones of the valve plate have a big impact on the performance of the piston pump. For example, the flow rate pulsation reaches the minimum when the angle of non-dead point transition zone is greater than or equal to the angle of a cylinder port. However, at this time, the closed compression would occur and the pressure inside the cylinder would rise rapidly as the piston moves to the non-dead point zone, thus resulting in serious pressure overshoot. In addition, if the angle of non-dead point transition zone is reduced within a certain range, the pressure overshoot will be reduced drastically, and the flow pulsation rate will rise a bit. The study suggests that it is necessary to adjust the angle of non-dead point transition zone to balance the pressure overshoot and flow pulsation of the pump to obtain the optimal kidney structure of the valve plate.https://www.mdpi.com/1996-1073/14/11/3246three-port piston pumpvalve plate designbidirectionalCFD numerical simulation
collection DOAJ
language English
format Article
sources DOAJ
author Xiangyang Li
Yiting Xi
Dunhui Xiao
Jiaxin Tao
spellingShingle Xiangyang Li
Yiting Xi
Dunhui Xiao
Jiaxin Tao
Valve Plate Structural Optimal Design and Flow Field Analysis for the Aviation Bidirectional Three-Port Piston Pump
Energies
three-port piston pump
valve plate design
bidirectional
CFD numerical simulation
author_facet Xiangyang Li
Yiting Xi
Dunhui Xiao
Jiaxin Tao
author_sort Xiangyang Li
title Valve Plate Structural Optimal Design and Flow Field Analysis for the Aviation Bidirectional Three-Port Piston Pump
title_short Valve Plate Structural Optimal Design and Flow Field Analysis for the Aviation Bidirectional Three-Port Piston Pump
title_full Valve Plate Structural Optimal Design and Flow Field Analysis for the Aviation Bidirectional Three-Port Piston Pump
title_fullStr Valve Plate Structural Optimal Design and Flow Field Analysis for the Aviation Bidirectional Three-Port Piston Pump
title_full_unstemmed Valve Plate Structural Optimal Design and Flow Field Analysis for the Aviation Bidirectional Three-Port Piston Pump
title_sort valve plate structural optimal design and flow field analysis for the aviation bidirectional three-port piston pump
publisher MDPI AG
series Energies
issn 1996-1073
publishDate 2021-06-01
description This paper designed and optimized a bidirectional three-port valve plate structure for solving the matching problem of flow rate and pressure in the aerospace pump-controlled differential hydraulic cylinder. This design aims to make the valve plate work well under the bidirectional high-speed condition. The model was set up using dynamic mesh and sliding mesh, and the simulation is conducted by FLUENT. In addition, the flow field of inlet and outlet flow rate pulsations, pressure pulsation in cylinder, and non-dead-point transition zone of four cases are analyzed to optimize the valve plate in this work. The numerical results show that different angles of non-dead-point transition zones of the valve plate have a big impact on the performance of the piston pump. For example, the flow rate pulsation reaches the minimum when the angle of non-dead point transition zone is greater than or equal to the angle of a cylinder port. However, at this time, the closed compression would occur and the pressure inside the cylinder would rise rapidly as the piston moves to the non-dead point zone, thus resulting in serious pressure overshoot. In addition, if the angle of non-dead point transition zone is reduced within a certain range, the pressure overshoot will be reduced drastically, and the flow pulsation rate will rise a bit. The study suggests that it is necessary to adjust the angle of non-dead point transition zone to balance the pressure overshoot and flow pulsation of the pump to obtain the optimal kidney structure of the valve plate.
topic three-port piston pump
valve plate design
bidirectional
CFD numerical simulation
url https://www.mdpi.com/1996-1073/14/11/3246
work_keys_str_mv AT xiangyangli valveplatestructuraloptimaldesignandflowfieldanalysisfortheaviationbidirectionalthreeportpistonpump
AT yitingxi valveplatestructuraloptimaldesignandflowfieldanalysisfortheaviationbidirectionalthreeportpistonpump
AT dunhuixiao valveplatestructuraloptimaldesignandflowfieldanalysisfortheaviationbidirectionalthreeportpistonpump
AT jiaxintao valveplatestructuraloptimaldesignandflowfieldanalysisfortheaviationbidirectionalthreeportpistonpump
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