双排油轴向柱塞泵配流特性理论分析与试验

发布时间：2018-06-05 09:44

本文选题：轴向柱塞泵 + 双排油　；参考：《农业机械学报》2017年06期

【摘要】：通过改变缸体结构、柱塞数、端盖油路、配流盘形状等,设计了双排油内外环并联配流结构的轴向柱塞泵,实现了单柱塞泵两路高压供油。针对单环柱塞数减少,腔内压力冲击增大,脉动变大等问题,对配流结构进行重新设计。在排油腰形槽和吸油腰形槽过渡区取消卸荷槽,利用加大配错角,在排油完毕未接通吸油时,腔内封闭体积增大,未排尽的高压油液压力降低;在吸油腰形槽和排油腰形槽过渡区,排油卸荷槽利用阶梯变化通流面积代替原连续变化的通流面积,削弱了卸荷槽几何形状要求。重新设计后的双排油配流结构,以45 mL轴向柱塞泵结构为参考,对配流结构进行了理论分析,建立了双排油轴向柱塞泵仿真模型。以单柱塞腔内压力冲击、输出流量进行分析研究,得外环压力冲击小,与传统配流结构相比较双排油输出口压力脉动变化率变小,并试制双排油轴向柱塞泵。对试制泵进行压力脉动测试、容积效率测试和噪声测试,结果表明,与45 mL轴向柱塞泵进行对比,压力脉动降低了约30%,噪声也降低,容积效率不低于0.92。该双排油轴向柱塞泵可以代替双联泵,使系统结构简化,能耗降低。
[Abstract]:By changing the cylinder body structure, the number of plunger, the end cover oil road, the shape of the flow disc, the axial piston pump with double row of inner and outer ring parallel flow structure is designed, which realizes the two way high pressure supply of the single plunger pump. The design of the flow structure is redesigned for the reduction of the single plunger number, the increase of the pressure impact in the cavity and the pulsation. In the transition zone of the oil absorption waist groove, the unloading tank is cancelled, and the volume of the cavity is enlarged and the pressure of the high pressure is reduced when the oil is not connected after the oil discharge is not connected. The redesigned double row oil distribution structure was redesigned. The structure of the 45 mL axial piston pump was used as a reference. The theoretical analysis of the flow structure was carried out. The simulation model of the double row oil axial piston pump was established. The output flow was analyzed with the pressure impact and the output flow of the single plunger cavity. The pressure fluctuation rate of the double row oil outlet is smaller and the double row oil axial piston pump is tried. The pressure pulsation test, the volume efficiency test and the noise test of the trial pump show that the pressure pulsation is reduced by about 30%, the noise is reduced, and the volume efficiency is not lower than that of the 45 mL axial piston pump. The volume efficiency is not less than 0.92.. The plunger pump can replace the duplex pump, simplifying the system structure and reducing energy consumption.
【作者单位】：太原理工大学新型传感器与智能控制教育部与山西省重点实验室;厦门大学能源学院;
【基金】：山西省自然科学基金项目(2014011024-1) 国家自然科学基金项目(51605322)
【分类号】：TH137.51

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