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CLC number: TH13

On-line Access: 2015-03-04

Received: 2014-09-07

Revision Accepted: 2014-12-03

Crosschecked: 2015-02-10

Cited: 6

Clicked: 2318

Citations:  Bibtex RefMan EndNote GB/T7714

 ORCID:

Bing Xu

http://orcid.org/0000-0003-0236-7896

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Journal of Zhejiang University SCIENCE A 2015 Vol.16 No.3 P.229-240

10.1631/jzus.A1400266


A new design method for the transition region of the valve plate for an axial piston pump


Author(s):  Bing Xu, Ying-hui Sun, Jun-hui Zhang, Tong Sun, Ze-bing Mao

Affiliation(s):  State Key Laboratory of Fluid Power Transmission and Control, Zhejiang University, Hangzhou 310027, China

Corresponding email(s):   bxu@zju.edu.cn

Key Words:  Axial piston pump, Valve plate, Flow ripple, Pressure overshoot


Bing Xu, Ying-hui Sun, Jun-hui Zhang, Tong Sun, Ze-bing Mao. A new design method for the transition region of the valve plate for an axial piston pump[J]. Journal of Zhejiang University Science A, 2015, 16(3): 229-240.

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DOI - 10.1631/jzus.A1400266


Abstract: 
The optimization of the valve plate transition region is an important way of reducing the noise emission for an axial piston pump. However, the optimized methods through simulation or experiment are actually trial and error, and they cannot indicate the precise structural parameters of the valve plate transition region. In this study, a new design method for the transition region of valve plate based on the matching of flow area and reduction of transient reverse flow was proposed, and with which a valve plate was designed. Then, the impact of the flow ripple in the discharge line of an axial piston pump and the pressure overshoot and undershoot in the piston chamber on hydraulic and structural noise for axial piston pump is discussed. The noise reduction effect of the axial piston pump with this valve plate was analyzed by adopting a flow characteristic simulation model. Finally, the results showed that the application of this design method could contribute much to the reduction of the flow ripple and elimination of the pressure overshoot and undershoot. As a consequence, the method can be used in the design of a low-noise open circuit axial piston pump.

The purpose of this study was to eliminate the overshoot and undershoot of cylinder pressure and to reduce the flow pulsation. So the authors proposed two criteria for designing the transition geometry of valve plates. I think they got at the heart of the matter and the process was quite reasonable.

一种新的轴向柱塞泵配流盘过渡区设计方法

目的:轴向柱塞泵配流盘的过渡区是影响轴向柱塞泵噪声的重要因素之一。本文提出一种新的过渡区设计方法,旨在降低轴向柱塞泵的噪声。
创新点:1. 该方法设计的过渡区结构,使得柱塞腔与配流盘腰形槽之间的通流面积完全匹配柱塞腔预升压与预降压所需求的面积;2. 优化倒灌流量在倒灌区间内的分配。
方法:1. 计算柱塞腔预升压与预降压所需求的柱塞腔与配流盘腰形槽之间的通流面积;2. 将柱塞腔倒灌流量平均分配到倒灌区间内,从而降低倒灌流量的峰值。
结论:1. 该设计显著地降低了柱塞腔压力的正超调量和负超调量;2. 减小了轴向柱塞泵出口流量脉动的幅值。

关键词:轴向柱塞泵;配流盘;流量脉动;压力超调

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

Reference

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