基于Fluent的环形多喷嘴辅助吸油装置的设计
发布时间：2019-04-22 21:43
【摘要】：针对液压泵在吸油过程中容易出现吸油不足的问题,设计了一种环形多喷嘴射流辅助吸油装置。在考虑装置尺寸要求和工况条件下,吸油装置的面积比应适当取大。建立辅助吸油装置的计算流体动力学三维模型,利用Fluent软件研究了喷嘴个数、喷嘴入射角、喉嘴距、吸入室角度、喉管长度等参数对环形多喷嘴辅助吸油装置性能的影响。结果表明:在保证喷嘴出口总截面积相同的条件下,喷嘴个数n越少越好,即n=2时效率最高;在一定范围内,喉嘴距和喷嘴入射角对效率的影响不大,入射角一般取值在20°~35°之间,喉嘴距取值接近喉管入口直径较好;吸入室角度对装置的影响很小,在计算的14°~52°时效率变化不大;环形射流装置的最优喉管长径比为2~2.5。
[Abstract]:In order to solve the problem of insufficient oil absorption in hydraulic pump, a circular multi-nozzle jet auxiliary oil absorbing device is designed. Considering the size and working conditions of the device, the area ratio of the oil suction unit should be appropriately larger. The three-dimensional computational fluid dynamics model of auxiliary oil suction device is established. The effects of nozzle number, nozzle incident angle, throat distance, suction chamber angle and throat length on the performance of annular multi-nozzle auxiliary oil suction device are studied by using Fluent software. The results show that under the condition that the total cross-sectional area of nozzle outlet is the same, the less the number of nozzles is, the better the nozzle number is, that is to say, the efficiency is the highest when the nozzles are In a certain range, the nozzle distance and nozzle incidence angle have little effect on the efficiency. The incidence angle is generally between 20 掳~ 35 掳, and the nozzle distance is close to the throat inlet diameter. The influence of the angle of the suction chamber on the device is very small, and the efficiency changes little in the calculated range of 14 掳~ 52 掳, and the optimal throat length to diameter ratio of the annular jet device is 2 ~ 2.5.
【作者单位】： 西南交通大学机械工程学院;
【分类号】：TH137.51
本文编号：2463219
[Abstract]:In order to solve the problem of insufficient oil absorption in hydraulic pump, a circular multi-nozzle jet auxiliary oil absorbing device is designed. Considering the size and working conditions of the device, the area ratio of the oil suction unit should be appropriately larger. The three-dimensional computational fluid dynamics model of auxiliary oil suction device is established. The effects of nozzle number, nozzle incident angle, throat distance, suction chamber angle and throat length on the performance of annular multi-nozzle auxiliary oil suction device are studied by using Fluent software. The results show that under the condition that the total cross-sectional area of nozzle outlet is the same, the less the number of nozzles is, the better the nozzle number is, that is to say, the efficiency is the highest when the nozzles are In a certain range, the nozzle distance and nozzle incidence angle have little effect on the efficiency. The incidence angle is generally between 20 掳~ 35 掳, and the nozzle distance is close to the throat inlet diameter. The influence of the angle of the suction chamber on the device is very small, and the efficiency changes little in the calculated range of 14 掳~ 52 掳, and the optimal throat length to diameter ratio of the annular jet device is 2 ~ 2.5.
【作者单位】： 西南交通大学机械工程学院;
【分类号】：TH137.51
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