A Comprehensive Compensation Method for High-speed Gear Pumps Without the Cavitation Phenomenon

Li Yulong; Hou Xinyu; Zhang Lihua

doi:10.16578/j.issn.1004.2539.2023.11.021

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A Comprehensive Compensation Method for High-speed Gear Pumps Without the Cavitation Phenomenon

Development·Application | 更新时间：2023-12-01

- A Comprehensive Compensation Method for High-speed Gear Pumps Without the Cavitation Phenomenon
- Journal of Mechanical Transmission Vol. 47, Issue 11, Pages: 141-145(2023)
- 作者机构：
  
  1.宿迁学院机电工程学院，江苏宿迁 223800
  2.四川五环石化装备有限公司，四川成都 641300
- 作者简介：
- 基金信息：
- DOI：10.16578/j.issn.1004.2539.2023.11.021
  CLC：
- Published：15 November 2023，
  
  Received：18 August 2022，
  
  Revised：21 November 2022，
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李玉龙,侯鑫宇,章丽华.高速齿轮泵无气穴现象的综合补偿方法[J].机械传动,2023,47(11):141-145.

Li Yulong,Hou Xinyu,Zhang Lihua.A Comprehensive Compensation Method for High-speed Gear Pumps Without the Cavitation Phenomenon[J].Journal of Mechanical Transmission,2023,47(11):141-145.
李玉龙,侯鑫宇,章丽华.高速齿轮泵无气穴现象的综合补偿方法[J].机械传动,2023,47(11):141-145. DOI： 10.16578/j.issn.1004.2539.2023.11.021.

Li Yulong,Hou Xinyu,Zhang Lihua.A Comprehensive Compensation Method for High-speed Gear Pumps Without the Cavitation Phenomenon[J].Journal of Mechanical Transmission,2023,47(11):141-145. DOI： 10.16578/j.issn.1004.2539.2023.11.021.

摘要

为了提高外啮合齿轮泵高转速时的气穴性能，提出了一种小侧隙、新环形卸荷槽和大入油压力的综合补偿方法。通过大、小侧隙下膨胀困油的变化区间、困油容积变化率和困油补偿流量及其卸荷面积与困油压力模型的建立，实例比较了常规矩形卸荷槽和新环形卸荷槽下的最小困油压力。结果表明，大侧隙的最大困油膨胀率和膨胀区间的长度均仅为小侧隙下的18.3%；由于卸荷槽间距的设置不同，大侧隙困油的最大卸荷面积仅为小侧隙下的7.9%；因此，大侧隙较小侧隙的气穴现象更严重，困油压力波动幅度为小侧隙下的1.93倍。得出了小侧隙、新环形卸荷槽和大入油压力的综合补偿方法，能有效缓解高速齿轮泵的气穴现象。

Abstract

In order to improve the cavitation performance under high-speed for external gear pumps

a comprehensive compensation method with the small backlash

innovative annulus relief-groove and increasing inlet oil-pressure is proposed. Based on all derived models of the trapped-oil expansion-process interval

trapped-oil volume change rate

compensation flow rate for the expanded trapped-oil

relief areas and trapped-oil pressures differently under large backlash or small backlash

the minimum trapped-oil pressures under conventional rectangular relief-groove and innovative annular relief-groove are compared with an example. All results show that the maximum trapped-oil expansion rate and the expansion interval under the large backlash are only 18.3% of those of the small backlash; the maximum relief-area of the trapped-oil in the large backlash is only 7.9% of that in the small backlash due to different relief-groove space; the cavitation phenomenon is more serious; the ripple range of the trapped-oil pressure in the large backlash is 1.93 times than that in the small backlash

etc. It is concluded that the cavitation phenomenon of the high speed gear pump can be effectively alleviated by the comprehensive compensation method with the small backlash

innovative annular relief-groove and increasing inlet oil-pressure.

关键词

高速齿轮泵无气穴现象困油压力膨胀过程小侧隙卸荷槽入油压力

Keywords

High-speed gear pumpNo cavitation phenomenonTrapped-oil pressureExpansion-processSmall backlashRelief-grooveInlet oil-pressure

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