外啮合斜齿轮高压泵的CFD数值模拟

doi:10.3969/j.issn.1674-8530.17.0186

Abstract
Figure/Table
References
Related Citation (15)

Download: PDF (2350 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract In order to study the influence of flow pulsation coefficient on the internal flow field of external helical gear high-pressure pump, the influence of the helix angle on the flow pulsation coefficient is analyzed by the theoretical formula. Combined with computational fluid dynamics(CFD),the numerical experiment of the flow field in the external gear helical gear was carried out, and the influe-nce of different speeds and radial clearances on the pressure pulsation and flow characteristics was ana-lyzed.The results show that the larger helix angle will reduce the flow pulsation coefficient, it is good for improving the quality of the outlet flow and reducing the gear pump leakage. Furthermore, when the speed and radial clearance increase within a certain range, the pulsation coefficient decreases and the leakage vortex intensity also decreases. When the rotational speed and radial clearance continue to increase, the pulsation coefficient tends to be stable.When the rotational speed increases, the pressure in the meshing area varies greatly, but the gear pressure near the pump wall changes little. On the other hand,when the radial clearance increases, the leakage flow and leakage vortex intensity will be reduced, the quality of outlet flow will also improved by increasing the speed and radial clearance. The study of the motion law and flow pulsation characteristics of the internal flow field of the high-pressure pump is of some reference value to the design and optimization of the external helical gear.

Key words： high-pressure helical gear pump numerical simulation flow pulsation coefficient pressure pulsation leakage

Received: 15 August 2017

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	LIU Kun-
	XU Lei-^*
	YANG Bo-
	LIU Yun-

Cite this article:

LIU Kun-,XU Lei-^*,YANG Bo-等. Numerical simulation of high-pressure pump with CFD[J]. Journal of Drainage and Irrigation Machinery Engin, 2019, 37(4): 307-312.

URL:

http://zzs.ujs.edu.cn/pgjx/EN/10.3969/j.issn.1674-8530.17.0186 OR http://zzs.ujs.edu.cn/pgjx/EN/Y2019/V37/I4/307

[1]鲁飞, 苏吉鑫, 巴胜富, 等. 大型移动式静音型超高压泵站的设计研究[J]. 流体机械, 2017,45(4):38-42.
　　LU Fei,SU Jixin,BA Shengfu,et al.Large mobile mute type ultra-high pressure pump station design research[J].Fluid machinery,2017,45(4):38-42.(in Chinese)
[2]郭善新, 陈达贵, 张禹, 等. 高压齿轮泵污染磨损的寿命模型研究与验证[J]. 流体机械, 2018, 46(5):13-17.
　　GUO Shanxin,CHEN Dagui,ZHANG Yu,et al.Research and verification of life model for pollution wear of high pressure gear pump[J].Fluid machinery, 2018, 46(5):13-17.(in Chinese)
[3]MAITI B. Analysis of flow through pump impellers by finite element method[J]. Applied scientific research, 1989, 46(2):105-126.
[4]DEVENDRAN R S, VACCA A. A novel design concept for variable delivery flow external gear pumps and motors[J]. International journal of fluid power, 2014, 15(3):121-137.
[5]SHEN H D, LI Z Q, QI L L, et al. A method for gear fatigue life prediction considering the internal flow field of the gear pump[J]. Mechanical systems and signal processing, 2018,99:921-929.
[6]罗先武,张瑶,彭俊奇,等. 叶轮进口几何参数对离心泵空化性能的影响[J]. 清华大学学报(自然科学版),2008, 48(5):836-839.
　　LUO Xianwu, ZHANG Yao, PENG Junqi,et al. Effects of impeller inlet geometry on cavitation performance of centrifugal pump [J]. Journal of Tsinghua University(science and technology),2008, 48(5):836-839.(in Chinese)
[7]罗先武,刘树红,邵杰,等. 微型泵半开式离心叶轮的空化性能[J]. 清华大学学报(自然科学版),2006,46(8):1451-1454.
　　LUO Xianwu,LIU Shuhong,SHAO Jie,et al. Spification of micro-pump half-open centrifugal impeller [J]. Journal of Tsinghua University(science and technology),2006,46(8):1451-1454.(in Chinese)
[8]张静,史伟东,胡亮,等. 斜齿轮泵流量及其流量脉动特性分析[J]. 液压气动与密封,2016(6):8-12.
　　ZHANG Jing,SHI Weidong,HU Liang,et al. Analysis of flow and its pulsation characteristics of helical gear pump [J]. Hydraulic pneumatic and seal,2016(6):8-12.(in Chinese)
[9]孔繁余,何玉洋,郑德,等. 外啮合齿轮泵流量特性影响因素分析[J].排灌机械工程学报,2014,32(2):108-112.
　　KONG Fanyou, HE Yuyang, ZHENG De,et al. Analysis of influencing factors of flow characteristics of external gear pump [J]. Journal of drainage and irrigation machinery engineering,2014,32(2):108-112.(in Chinese)
[10]梁开洪,张克危,许丽,等. 轴流泵叶顶间隙流动的计算流体动力分析[J]. 华中科技大学学报(自然科学版),2004,32(9):36-38.
　　LIANG Kaihong,ZHANG Kewei,XU Li,et al. Fuzzy dynamic analysis of axial flow of axial-flow pump [J]. Journal of Huazhong University of Science and Technology(natural science edition),2004,32(9):36-38.(in Chinese)
[11]张双全,符建平,段开林,等. 三峡水轮机尾水管涡带的CFD数值模拟[J]. 华中科技大学学报(自然科学版),2006,34(7):19-20.
　　ZHANG Shuangquan,FU Jianping,DUAN Kailin,et al. Fuzzy simulation of turbine vortex in the Three Gorges turbine [J]. Huazhong University of Science and Technology(natural science edition),2006,34(7):19-20.(in Chinese)