直线电机驱动水液压柱塞泵研制与试验研究

发布时间：2018-04-09 03:34

本文选题：水液压柱塞泵　切入点：直线电机　出处：《大连海事大学》2017年硕士论文

【摘要】：水液压传动技术是一种使用过滤后的淡水或海水代替矿物油作为工作介质的绿色液压技术。水液压柱塞泵是水液压系统的关键元件,由于水介质的理化特性差异导致其泄漏、摩擦磨损、腐蚀、气蚀等现象比油压柱塞泵严重。传统的斜盘式柱塞水液压泵技术已非常成熟,但是在高围压环境下容积效率大幅下降,因而不适用于深海环境。采用直线电机驱动水液压柱塞泵,减少了传统旋转电机驱动柱塞泵中电机旋转运动到柱塞往复直线运动的能量转换环节,消除了斜盘受围压作用效率降低的影响,具有效率高,适应深海高围压环境的优点,而且采用直线电机驱动,通过控制直线电机的速度,可以实现泵的无级调速。本文以直线电机和水液压柱塞泵为研究对象,结合国内外相关研究,分析了国内外水液压柱塞泵和直驱泵的发展和研究现状,设计研制了一种新型的直线电机驱动水液压柱塞泵。通过分析滞后条件下三角波和梯形波的叠加效果,确立了直线电机的运动规划,通过AMESim建模仿真确定柱塞泵的配流方式,提出了直线电机驱动柱塞泵方案。针对直线电机驱动水液压柱塞泵的柱塞副的受力和泄漏进行分析,结合永磁同步直线电机的建模,建立直线电机驱动柱塞泵运动模型,通过搭建单柱塞驱动特性试验台,验证直线电机驱动特性。利用MMW-1立式万能摩擦磨损试验机对316L不锈钢与四种聚醚醚酮(PEEK)进行摩擦学性能研究,分析了在水润滑条件下四组对偶摩擦副的摩擦系数、温度、磨损量和接触表面的磨损形貌进行,确定了 316-PEEKHPV是适用在直线电机驱动水液压柱塞泵中摩擦副的配对材料。基于理论和试验研究,设计加工直线电机驱动水液压柱塞泵样机,通过搭建样机试验试验台,进行了不同冲次下的加载试验,结果表明样机在冲次150 min-1和负载压力3 MPa下运行时,其实际输出流量为10.2 L/min,容积效率约为79.07%,机械效率约为93.5%,总效率约为73.5%,满足研究指标的要求。
[Abstract]:Water hydraulic transmission is a kind of green hydraulic technology which uses filtered fresh water or seawater instead of mineral oil as working medium.Water hydraulic piston pump is the key component of water hydraulic system. Because of the difference of physical and chemical properties of water medium, the phenomena of leakage, friction and wear, corrosion and cavitation are more serious than those of oil pressure piston pump.The traditional technology of inclined disc plunger hydraulic pump is very mature, but the volumetric efficiency is greatly reduced in high confining pressure environment, so it is not suitable for deep-sea environment.Water hydraulic piston pump driven by linear motor reduces the energy conversion link between motor rotation motion and plunger reciprocating linear motion in the traditional rotary motor driving piston pump, and eliminates the influence of the sloping disk on the reduction of the confining pressure, so it has high efficiency.The stepless speed regulation of the pump can be realized by controlling the speed of the linear motor, which is suitable for the deep sea high confining pressure environment.This paper takes linear motor and hydraulic piston pump as the research object, and analyzes the development and research status of water hydraulic piston pump and direct-drive pump at home and abroad combined with related research at home and abroad.A new hydraulic hydraulic piston pump driven by linear motor is designed and developed.By analyzing the superposition effect of triangle wave and trapezoid wave under the condition of lag, the motion planning of linear motor is established, the flow distribution mode of piston pump is determined by AMESim modeling and simulation, and the scheme of driving piston pump by linear motor is put forward.According to the analysis of force and leakage of plunger pair of hydraulic hydraulic piston pump driven by linear motor, combined with the modeling of permanent magnet synchronous linear motor, the motion model of plunger pump driven by linear motor is established, and the test bed of driving characteristic of single plunger is built.Verify the driving characteristics of linear motor.The tribological properties of 316L stainless steel and four polyether ether ketones (PEEK) were studied by MMW-1 vertical universal friction and wear tester. The friction coefficient and temperature of four pairs of dual friction pairs under water lubrication were analyzed.The wear amount and the wear morphology of the contact surface were carried out, and it was determined that 316-PEEKHPV was the matching material for friction pairs in the hydraulic hydraulic piston pump driven by linear motor.Based on the theoretical and experimental research, the prototype of hydraulic hydraulic piston pump driven by linear motor was designed and manufactured.The results show that the actual output flow rate is 10.2 L / min, the volume efficiency is about 79.07, the mechanical efficiency is about 93.5and the total efficiency is about 73.5, which meets the requirements of the research index.
【学位授予单位】：大连海事大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TH137.51

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