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On-line Access: 2023-06-20

Received: 2022-08-09

Revision Accepted: 2022-12-04

Crosschecked: 2023-09-20

Cited: 0

Clicked: 730

Citations:  Bibtex RefMan EndNote GB/T7714

 ORCID:

Jian RUAN

https://orcid.org/0000-0002-4185-514X

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Journal of Zhejiang University SCIENCE A 2023 Vol.24 No.9 P.762-781

http://doi.org/10.1631/jzus.A2200378


Theoretical and experimental investigation on the efficiency of a novel roller piston pump


Author(s):  Chenchen ZHANG, Yiren ZANG, Heyuan WANG, Bin MENG, Sheng LI, Jian RUAN

Affiliation(s):  College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, China

Corresponding email(s):   ruanjiane@zjut.edu.cn

Key Words:  Roller piston pump, Shaft distribution mechanism, Mechanical efficiency, Volumetric efficiency, Aerospace pump


Chenchen ZHANG, Yiren ZANG, Heyuan WANG, Bin MENG, Sheng LI, Jian RUAN. Theoretical and experimental investigation on the efficiency of a novel roller piston pump[J]. Journal of Zhejiang University Science A, 2023, 24(9): 762-781.

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publisher="Zhejiang University Press & Springer",
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%A Bin MENG
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Abstract: 
This study presents a novel roller piston pump, in which a cam guide-roller type rolling support is adopted to replace the sliding pair support of the swash plate-slipper pair to achieve the oil suction and discharge of the piston cavity. In addition, the shaft distribution is used to replace the original valve plate distribution and the driving shaft is used as the distribution shaft to remove the valve plate structure, which greatly simplifies the design of the axial piston pump. Such a configuration largely reduces the number of sliding friction pairs of the pump, and avoids the influence of the sliding friction pair on it under high-speed and variable-speed conditions. Firstly, mathematical models of the mechanical and volumetric efficiencies of the roller pump are deduced respectively through force analysis and the compressibility equation. Based on the numerical simulation of MATLAB and AMESim, the effects of load pressure and rotational speed on mechanical and volumetric efficiencies are studied respectively, and it is verified that the roller pump has no structural flow pulsation. The prototype pump is then designed and built, along with a special test rig. The outlet pressure, outlet flow, and torque of the pump under different load pressures and rotational speeds are measured, and the mechanical and volumetric efficiencies of the prototype pump under various load pressures and rotational speeds are obtained. The experimental results are in good agreement with the simulated analysis. When the load pressure is 8 MPa and the speed is 5000 r/min, the mechanical and the volumetric efficiencies are 85.5% and 96.8%, respectively. When the speed is increased to 10000 r/min, the mechanical and the volumetric efficiencies are 66.7% and 95.6%, respectively. The experimental results show that the proposed roller piston pump has excellent efficiency under wide-speed and high-speed conditions and can be a potential solution as a fuel pump in aerospace fuel systems.

新型滚子柱塞泵效率特性的理论与实验研究

作者:张晨晨,臧一人,王河缘,孟彬,李胜,阮健
机构:浙江工业大学,机械工程学院,中国杭州,310023
目的:由于其固有的三大滑动摩擦副,传统轴向柱塞泵在高转速及变转速工况下的机械和容积效率受到制约。如何降低摩擦副的摩擦损失和泄漏损失成为高性能燃油泵设计中首要关注的问题。本文提出一种新型滚子柱塞泵,探讨了其在不同负载压力与转速下的机械效率与容积效率。
创新点:1.提出一种新型滚子柱塞泵,其采用凸轮导轨-滚子式的滚动支撑替代斜盘-滑靴副的滑动副支撑来实现柱塞腔的吸排油,采用轴配流代替原有的配流盘配流,传动轴兼作配流轴以免去配流盘结构,从而极大地简化了轴向柱塞泵的设计;2.建立机械效率与容积效率的数学模型与仿真模型,模拟了滚子柱塞泵在变工况下的运行状态。
方法:1.对滚子泵进行受力分析与泄漏分析,建立滚子泵机械效率与容积效率的数学模型(第3节);2.基于MATLAB与AMESim仿真研究负载压力与转速对机械效率和容积效率的影响(第4节);3.设计与加工滚子泵的原理样机,并在专用的试验台上测得其扭矩与流量,得出其在不同负载压力与转速下的机械效率与容积效率,并将实验结果与仿真结果的比较分析,从而验证滚子泵的高效率(第5节)。
结论:1.新型滚子柱塞泵采用凸轮导轨式滚动支承代替斜盘-滑靴副的滑动副支承,实现活塞腔的吸油和排油。研究结果表明该新结构可以成为航空航天燃油泵的一种潜在解决方案。另外,采用轴配流代替原来的配流盘,以传动轴兼作配流轴,大大简化了轴向柱塞泵的设计。通过结构的对称设计,实现了泵的惯性力平衡,实现了无结构流量脉动,满足了航空液压泵集成度高、压力脉动小的要求。2.理论与实验结果表明,通过结构创新去除配流盘可减少泄漏,大大提高容积效率。滚子泵最高转速可达10000 r/min以上,满足航天燃油泵高速、变速的需要。

关键词:滚子柱塞泵;轴配流机构;机械效率;容积效率;航空航天泵

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

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