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工程设计学报  2023, Vol. 30 Issue (1): 57-64    DOI: 10.3785/j.issn.1006-754X.2023.00.005
优化设计     
八次方定子曲线对叶片泵动态性能的影响
孙永国1(),薛冬1,徐娇2,刘士晟1,吴京航1,白星宇1
1.哈尔滨理工大学 机械动力工程学院,黑龙江 哈尔滨 150006
2.哈电集团哈尔滨电站阀门有限公司,黑龙江 哈尔滨 150066
Effect of eighth power stator curve on dynamic performance of vane pump
Yong-guo SUN1(),Dong XUE1,Jiao XU2,Shi-sheng LIU1,Jing-hang WU1,Xing-yu BAI1
1.School of Mechanical Power Engineering, Harbin University of Science and Technology, Harbin 150006, China
2.He Harbin Power Plant Valve Company Limited, Harbin 150066, China
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摘要:

为了降低叶片泵在原油开采过程中的振动,应尽量消除其由于加速度突变而造成的运行冲击。通过推导八次方曲线方程,得到定子内腔过渡曲线的数学模型。采用MATLAB软件对过渡曲线进行拟合。为了验证该叶片泵的动态性能,设计了实验方案,进行叶片泵变速和变压实验。实验结果表明:在500 r/min转速下,扬程达到23.14 m,流量达到2.44 m3/h,满足了低速设计要求;叶片泵对外部压力负载有一定的要求,其最大值不能超过0.5 MPa,若超过此值,叶片泵将失去自吸能力;随着转速的提高,其流量和噪声增大;随着压力负载增大,流量呈先上升后下降的趋势,噪声总体呈上升趋势,但在压力负载大于0.25 MPa后上升有所缓慢,泵内流量逐渐趋近于0,此时泵的噪声主要来源于叶片与定子的摩擦。研究结果为减小叶片泵的振动和噪声以及叶片泵结构的进一步优化提供了参考。

关键词: 叶片泵定子过渡曲线流量扬程    
Abstract:

In order to reduce the vibration of vane pump in the process of crude oil exploitation, the operating impact caused by sudden change of acceleration should be eliminated as much as possible. The mathematical model of the stator internal cavity curve was obtained by deducing the octagonal curve equation. The transition curve was fitted by MATLAB software. In order to verify the dynamic performance of the vane pump, an experimental scheme was designed, and the variable speed and variable pressure experiments of the vane pump were carried out. The experimental results showed that at the speed of 500 r/min, the lift reached 23.14 m and the flow reached 2.44 m3/h, which met the design requirements of low speed; the vane pump had certain requirements for external pressure load, and its maximum value could not exceed 0.5 MPa. If this value was exceeded, the vane pump would lose its self-priming performance; with the increase of rotating speed, its flow and noise would increase; as the pressure load increased, the outlet flow increased first and then decreased, and the noise generally increased, but it rose slowly after the pressure load was greater than 0.25 MPa, and the flow in the pump gradually approached 0.At this time, the noise of the pump mainly came from the friction between the vane and the stator. The research results provide a reference for reducing the vibration and noise of the vane pump and further optimizing the structure of the vane pump.

Key words: vane pump    stator transition curve    flow    lift
收稿日期: 2022-05-01 出版日期: 2023-03-06
CLC:  TH 311  
基金资助: 国防基础科研计划项目(JCKY2019412D004)
作者简介: 孙永国(1964—),男,山东沂南人,教授,硕士,从事石油开采机械设备等研究,E-mail: sygedu@163.com,https://orcid.org/0000-0003-2541-7972
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引用本文:

孙永国,薛冬,徐娇,刘士晟,吴京航,白星宇. 八次方定子曲线对叶片泵动态性能的影响[J]. 工程设计学报, 2023, 30(1): 57-64.

Yong-guo SUN,Dong XUE,Jiao XU,Shi-sheng LIU,Jing-hang WU,Xing-yu BAI. Effect of eighth power stator curve on dynamic performance of vane pump[J]. Chinese Journal of Engineering Design, 2023, 30(1): 57-64.

链接本文:

https://www.zjujournals.com/gcsjxb/CN/10.3785/j.issn.1006-754X.2023.00.005        https://www.zjujournals.com/gcsjxb/CN/Y2023/V30/I1/57

图1  定子内腔过渡曲线的仿真结果
图2  双作用叶片泵示意图
设计指标转速/(r/min)
5001 450
流量/(m3/h)2.248.33
扬程/m615
表1  叶片泵设计指标
图3  叶片泵动态性能实验装置
图4  叶片泵动态性能实验台
图5  实验台的液压系统1—叶片泵;2—扭矩测量仪和扭矩传感器;3—变频电机和变频器;4—过滤器;5—流量控制阀;6—入口压力表;7—涡轮流量计。
设备名称技术参数

变频电机

变频器

5.5 kW, AMPS11, 380 V, 2 910 r/min,

30~1 809 Hz

CHRH455DEE/475DPE-1, 30~1 809 Hz

扭矩仪100 Nm, 最高转速为6 000 r/min
入口压力表0~0.2 MPa
出口压力表0~1.6 MPa
流量控制阀球阀DN50
涡轮流量计DN50, +24 VDC
噪声分贝仪PM6708数字声级计, 相对湿度≤80%,操作温度为0~40 ℃
管路DN50
油箱体积为250 L
表2  实验设备的技术参数
实验名称转速/(r/min)扭矩/(N·m)功率/kW流量/(m3/h)进口压力/kPa出口压力/MPa噪声/dB

1007.170.090.854-20.00.03469.3
2008.500.221.464-37.00.04887.6
3009.100.241.586-42.00.07698.5
4009.750.451.708-53.10.100106.8
50012.100.482.440-59.60.140108.0

25010.400.271.952-64.20.0597.5
25511.860.312.562-65.20.1099.8
25912.900.352.44-68.70.15101.4
26213.900.382.196-52.80.20104.2
26715.900.450.732-29.30.25107.6
26815.700.440.342-23.50.30107.8
28622.200.6701.30.50109.3
表3  叶片泵动态性能实验数据
图6  叶片泵进、出口压力随转速的变化曲线
图7  叶片泵进、出口压力随压力负载的变化曲线
图8  叶片泵流量和噪声随转速的变化曲线
图9  叶片泵流量和噪声随压力负载的变化曲线
图10  定子磨损位置
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