【作者】 陈艳伟；

【导师】 刘涛； 王益群；

【作者基本信息】 燕山大学 ， 机械电子工程， 2011， 硕士

【摘要】 齿轮马达分流器因其具有安装调试简单,分流精度高且不受负载影响,而且具有增压的功能。被广泛应用于冶金、水利、工程机械等多个行业,但目前国内相关产品精度还达不到要求。通过对同步器内部流场的动态特性的研究,为进一步提高齿轮分流器的分流精度提供理论依据。本文从对其内部流场的动态特性入手,利用FLUENT软件对其内部流场区域进行数值模拟。通过设置不同的结构参数,找出影响分流精度的主要因素。首先,对进口齿轮马达分流器进行测绘,利用所测尺寸对齿轮马达分流器进行几何建模。通过CAXA软件绘制精确的渐开线齿轮,利用FLUENT前处理器Gambit对齿轮马达分流器内部流场区域进行网格划分。由于网格数量庞大,利用多台电脑对模型进行并行运算求解。其次,根据实际工况,设置不同的转速、壳体与齿顶的间隙值,压差值；引入标准的k-ε湍流模型,设定流场分析的边界条件,利用动网格技术,对模型进行求解。利用FLUENT监视器的功能,对出口设置流量检测。利用FLUENT软件检测出的流量数据导入EXCEL进行图形化处理,可以得到齿轮马达分流器两出口的流量值。最后,依据FLUENT仿真的结果,根据流量检测的数据,以及齿轮马达分流器内部流场进行分析。根据不同参数下检测出的流量值分析同步误差,对所得结果进行分析,给出在不考虑端面泄漏情况下,齿轮马达分流器在不同负载,不同转速下,不同齿顶和壳体间隙值下的分流精度及其变化规律。更多还原

【Abstract】 Gear Type Flow Divider is widely used in metallurgy, water conservancy, engineering machinery, for it is very easy to fit and debugging. But at present domestic related products accuracy also isn’t up to scratch.Through the synchronizer internal flow field of research, In order to further improve the gear of shunt provide theoretical basis for shunt accuracy, This article from the internal flow field, Using FLUENT software of the internal flow field in regional numerical simulation. Through setting different structural parameters, find out the main factors of influence shunt accuracy.First, by surveyed and mapped a foreign brand product, then establish the gear motor shunt geometric modeling, and eatabished the modeling using the measured dimension. It has rendered accurate involute gea through CAXA software. The internal flow field of the gear motor was meshed using FLUENT Gambit former processor. Due to the grid huge, and computer hardware limitations, the computer models are parallel computing solution.Secondly, for seeking the relationship of shunt error and the motor speed, tooth crest and shell clearance, differential pressure, according to the actual working condition, set up different speed, shell and tooth crest of inner-space value, differential pressure value; Introducing standard k-turbulence model, setting the boundary conditions of flow field analysis, using dynamic grid technology to solve the model. Using FLUENT soft monitor function, set flow detection. Gear motor respectively on the export of shunt flow test. Using FLUENT software detected flow data import EXCEL for graphical processing, can get the two export flow value of the gear motor shunt.Limited to computer condition limit and the haste, here I just analysis the four situation. Finally, analyzed the FLUENT software simulation results, the flow measuring data, and the pressure of convective of the gear motor shunt’s internal flow field. According to different parameters to detect flow value analysis synchronization error, flows pulsation. Utilizing pressure image analysis trapped oil phenomenon. The results obtained are analyzed. The diversion error of the gear motor shunt were given in in different load, different speed, different tooth crest and shell clearance value under the condition the leakage of gear eed is not considered. The correctness of the theoretical reasoning was verified through simulation and calculation of flow pulsation. Pocketed oil phenomenon was simulated in detali through the simulation analysis of pressure image And there are specific numerical to illustrate the harm of pocketed oil phenomenon.更多还原