转套式配流系统与阀式配流系统性能对比研究
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摘要
往复柱塞泵的结构体积、容积效率和脉动特性是其重要的性能指标,决定了柱塞泵在实际应用中的空间占用、机械效率、使用寿命和噪声产生等问题。针对传统往复柱塞泵采用的阀式配流系统与新型的转套式配流系统,在体积结构、压力脉动和容积效率3个方面进行对比研究。将两种配流系统设计为相同的额定输出流量、额定输出压力和额定工作转速,并将其体积进行比较,对转套式配流系统在Fluent软件中进行仿真,并将其脉动情况和容积效率与阀式配流系统进行对比分析。结果表明:转套式配流系统在结构体积和压力脉动方面均优于阀式配流系统,在额定工况下,转套式配流系统的容积效率较高,且表现稳定,当工作转速较大时,其容积效率急剧下降。
The structure,volume,volumetric efficiency and pulsating characteristics of the reciprocating plunger pump are used as important performance indexes,which determine the space occupancy,mechanical efficiency,service life and noise generation of the piston pump in practical application. In this paper,the valve type orifice system used in the traditional reciprocating plunger pump is compared with the new type of rotating-sleeve distributing-flow system and the volume,structure,pressure pulsation and volumetric efficiency are analyzed. Under the equal conditions of rated output flow,rated output pressure and rated working speed,their volumes are compared. The rotating-sleeve distributing-flow system is simulated in the Fluent. Its pulsating characteristics and volumetric efficiency are compared with ones of the valve type orifice system. The results show that the rotating-sleeve distributing-flow system is superior to the valve type orifice system in structure,volume and pressure pulsation. Under the rated working conditions,the volume efficiency of the rotating-sleeve distributing-flow system is higher,and its performance is stable,but when the working speed is faster,its volumetric efficiency drops sharply.
The structure,volume,volumetric efficiency and pulsating characteristics of the reciprocating plunger pump are used as important performance indexes,which determine the space occupancy,mechanical efficiency,service life and noise generation of the piston pump in practical application. In this paper,the valve type orifice system used in the traditional reciprocating plunger pump is compared with the new type of rotating-sleeve distributing-flow system and the volume,structure,pressure pulsation and volumetric efficiency are analyzed. Under the equal conditions of rated output flow,rated output pressure and rated working speed,their volumes are compared. The rotating-sleeve distributing-flow system is simulated in the Fluent. Its pulsating characteristics and volumetric efficiency are compared with ones of the valve type orifice system. The results show that the rotating-sleeve distributing-flow system is superior to the valve type orifice system in structure,volume and pressure pulsation. Under the rated working conditions,the volume efficiency of the rotating-sleeve distributing-flow system is higher,and its performance is stable,but when the working speed is faster,its volumetric efficiency drops sharply.
引文
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[2]路甬祥.液压气动技术手册[M].北京:机械工业出版社,2007.
[3]徐威,张洪信,舒培,等.缸间齿轮联动液压发动机柱塞泵运动学研究[J].机械传动,2016,40(5):5-9.
[4]Xu Bing,Zhang Junhui,Yang Huayong. Investigation on structural optimization of anti-overturning slipper of axial piston pump[J]. Science China Technological Sciences,2012,55(11):3010-3018.
[5]黄国勤,李晓晖,朱玉泉.阀配流式水压柱塞泵降噪技术研究[J].噪声与振动控制,2009,29(1):157-160.
[6]赵胜,赵振东.往复泵设计[M].北京:机械工业出版社,1983.
[7]盛锋,郑昆山,石磊,等.高速开关电磁阀在军用工程机械上的应用探索[J].机床与液压,2013,41(2):82-84.
[8]尹方龙,聂松林.水压轴向柱塞泵配流盘预升压角[J].北京工业大学学报,2015(9):1281-1288.
[9]马智勇,蒋麒麟,赵剑峰,等.某型单向阀打开过渡过程特性对流阻性能影响的仿真分析[J].装备制造技术,2014(2):47-50.
[10]张延君,张洪信,赵清海,等.往复柱塞泵转套式配流系统泵腔流场仿真研究[J].液压与气动,2016(11):31-32.
[11]岳艺明,孔晓武.阀配流式径向柱塞泵动态性能的仿真研究[J].机床与液压,2005(8):103-104.
[12]马吉恩.轴向柱塞泵流量脉动及配流盘优化设计研究[D].杭州:浙江大学机械工程学院,2009.
[13]张天霄.液压柱塞泵压力脉动函数的仿真分析[J].振动、测试与诊断,2016,36(5):842-843.
[14]赵红,张铁柱,霍炜,等.约束活塞型内燃式水泵阀式配流系统工作特性研究[J].中国机械工程,2006,9(17):952-953.
[15]朱礼浩.阀配流往复式柱塞泵效率与噪声的研究[D].兰州:兰州理工大学,2016. 12-13.
[16]王卫超,张铁柱,张洪信.配流阀容积效率对三缸内燃水泵工作性能的影响[J].农业机械学报,2009,2(40):78-79.