摘要
设计了3种甲醇泵柱塞副的润滑结构,并采用三维流体仿真技术对不同润滑结构方案的润滑和密封效果进行了分析。试验结果表明,在无混合油道的情况下,随着甲醇与润滑油之间的压差减小,甲醇出口处润滑油的体积分数逐渐降低,直至稳定在0.05左右。在存在混合油流道的情况下,随着润滑油入口压力的增加,混合油中甲醇的体积分数逐渐降低,当润滑油入口压力达到1.5MPa后,混合油中甲醇的体积分数保持稳定,约占混合油液体积的18%。在甲醇自润滑结构中,上下环槽分别连接甲醇的出口和进口,压力分别为0.5MPa和0.8MPa,此时下端环槽的质量流量为5.5×10-4kg/s。计算结果揭示了不同润滑结构与其运行效能的相关规律,对甲醇泵的开发具有一定的指导意义。
This article designs three lubrication structures for the plunger pair of the methanol pump,and analyzes the lubrication and sealing effects of different lubrication structure schemes using three-dimensional fluid simulation technology.The experimental results show that in the absence of a mixed oil flow channel,as the pressure difference between methanol and lubricating oil decreases,the volume fraction of lubricating oil at the outlet of methanol gradually decreases until it stabilizes at around 0.05.In the presence of a mixed oil flow channel,as the inlet pressure of lubricating oil increases,the volume fraction of methanol in the mixed oil gradually decreases.When the inlet pressure of lubricating oil reaches 1.5 MPa,the volume fraction of methanol in the mixed oil remains stable,accounting for about 18%of the mixed oil volume.In the methanol self-lubricating structure,the upper and lower ring grooves are connected to the outlet and inlet of methanol,respectively,with pressures of 0.5 MPa and 0.8 MPa,respectively.At this time,the mass flow rate of the lower ring groove is 5.5×10^(-4) kg/s.The calculation results reveal relevant laws for different lubrication structures and have certain guiding significance for the development of methanol pumps.
作者
屈超
周家勇
胡玉针
李栋
许强
郭元
李许庆
吴学东
QU Chao;ZHOU Jiayong;HU Yuzhen;LI Dong;XU Qiang;GUO Yuan;LI Xuqing;WU Xuedong(Chongqing Hongjiang Machinery Co.,Ltd.,Chongqing 402160,China;Chongqing Key Laboratory of Fuel System For Green Marine Engine,Chongqing 402160,China;National Engineering Research Center of Special Equipment and Power System for Ship and Marine Engineering,Chongqing 402160,China)
出处
《内燃机》
2024年第3期7-12,共6页
Internal Combustion Engines
基金
工信部科研项目(CBG5N21-4-2-1)。
关键词
甲醇泵
柱塞偶件
润滑
流体仿真
methanol pump
plunger coupler
lubrication
fluid simulation
