基于FLUENT的高压高速螺旋转子泵内部流场分析
发布时间：2018-10-09 10:17
【摘要】：目的分析高压高速螺旋转子泵运行过程中的内部流场行为,为高压高速螺旋转子泵的结构优化提供理论依据。方法利用Solid Works建立高压高速螺旋转子泵三维模型,使用FLUENT仿真其在高压高速运行条件下的内部流场,得到压强云图,对比有、无气穴时转速对油膜最大压强和最大负压影响。结果气穴对高压区的啮合压强基本没有影响。齿轮啮合处压强最大值、齿轮啮合处负压最大值及空气在液压油中的占有率随转速的增加而增大,当转速为12 000 r/min时,空气占有率高达12.81%,啮合处的压强可高达37.5 MPa,是出油口压强的1.5倍。结论气穴阻止了部分齿顶间隙的泄漏,对转子稳定性的提高有积极意义。最大压强出现在螺旋转子泵转子的啮合处,这使转子产生了剧烈振动,降低了螺旋转子泵的稳定性。
[Abstract]:Aim to analyze the internal flow field behavior of high pressure high speed spiral rotor pump during operation, and to provide a theoretical basis for the structure optimization of high pressure high speed screw rotor pump. Methods the three-dimensional model of high pressure and high speed spiral rotor pump was established by Solid Works. The internal flow field under high pressure and high speed operation was simulated by FLUENT, and the pressure cloud diagram was obtained. The effect of rotation speed on the maximum pressure and negative pressure of oil film was compared when there were no air holes. Results the cavitation had no effect on the meshing pressure in high pressure region. The maximum pressure at gear engagement, the maximum negative pressure at gear engagement and the occupation rate of air in hydraulic oil increase with the increase of rotational speed. When the speed is 12 000 r/min, The air occupancy is 12.81 and the meshing pressure can be up to 37. 5 MPa, as high as 1. 5 times the outlet pressure. Conclusion the cavitation prevents the leakage of some teeth top clearance, and it has positive significance for improving the rotor stability. The maximum pressure occurs at the meshing point of the rotor of the screw rotor pump, which makes the rotor vibrate violently and reduces the stability of the screw rotor pump.
【作者单位】： 淮安信息职业技术学院;江苏电子产品装备制造工程技术研究开发中心;
【基金】：2015年江苏省高级访问学者项目(2015FX010)
【分类号】：TB486
本文编号：2258978
[Abstract]:Aim to analyze the internal flow field behavior of high pressure high speed spiral rotor pump during operation, and to provide a theoretical basis for the structure optimization of high pressure high speed screw rotor pump. Methods the three-dimensional model of high pressure and high speed spiral rotor pump was established by Solid Works. The internal flow field under high pressure and high speed operation was simulated by FLUENT, and the pressure cloud diagram was obtained. The effect of rotation speed on the maximum pressure and negative pressure of oil film was compared when there were no air holes. Results the cavitation had no effect on the meshing pressure in high pressure region. The maximum pressure at gear engagement, the maximum negative pressure at gear engagement and the occupation rate of air in hydraulic oil increase with the increase of rotational speed. When the speed is 12 000 r/min, The air occupancy is 12.81 and the meshing pressure can be up to 37. 5 MPa, as high as 1. 5 times the outlet pressure. Conclusion the cavitation prevents the leakage of some teeth top clearance, and it has positive significance for improving the rotor stability. The maximum pressure occurs at the meshing point of the rotor of the screw rotor pump, which makes the rotor vibrate violently and reduces the stability of the screw rotor pump.
【作者单位】： 淮安信息职业技术学院;江苏电子产品装备制造工程技术研究开发中心;
【基金】：2015年江苏省高级访问学者项目(2015FX010)
【分类号】：TB486
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