叶片泵结构与声学一体化优化设计

【作者】 王涛；

【导师】 钱志博；

【作者基本信息】 西北工业大学 ， 武器动力与制造， 2007， 硕士

【摘要】 本文以热动力鱼雷的叶片式海水泵为研究对象，研究其结构优化和声学减振降噪问题，主要内容包括： 本文研究了叶片泵的工作特点，包括：叶片泵结构特点，工质液体使用特点，对使用环境的要求等，并通过分别建立叶片泵内定子曲线优化模型和叶片泵叶片受力优化模型，对两者联合进行了优化设计得到优化结果。此外，本文比较了叶片泵结构优化前后的性能参数，结果表明：联合优化得到的叶片泵内定子曲线具有四阶连续、其各阶次曲线的变化幅度也下降很多，且新型顶廓曲线叶片接触力的变化相对于普通对中圆弧叶片和单面后倾叶片比较均衡，也没有脱空现象。 本文改进了叶片泵的转子和壳体，在一定程度上降低了叶片泵的振动噪声。通过采用Pro／E建立叶片泵的实体装配模型，并利用ANSYS软件对叶片泵的关键组件进行模态分析，较深入的研究了叶片泵结构变化对其振动噪声性能的影响，结果表明：在转子和壳体中加入阻尼材料后，叶片泵的共振频率有较大的降低，且前几阶模态振型都是关于阻尼材料结构的振动，其振动噪声表现为低频振动。因而通过低频衰减，可以有效减少振动噪声通过壳体向环境传播。更多还原

【Abstract】 In this paper, the vane pump which is used for the thermal torpedo system was taken as the research objects, and its structure optimization and elimination of vibration was analyzed and researched integrative.In this paper, the vane pump’s working property was researched, which include the vane pump’s structure property, the using property of the liquid which is used by the vane pump, the request of the using environment etc, and establish the optimization mode of the stator curve and the touching force of the vane, optimize the two aspect integrative and obtain the results. In addition, the performance parameters of the vane pump’s ameliorated structure and the original structure was compared, it is stated that, the optimized stator curve’s performance is much better than the original structure’s both in the series and the change range of the curve’s first derivative to the fourth derivative, also the touching force of the vane is much less than the new vane which has the optimized top curve, and there did not occur the phenomenon that the touching force of the vane is negative.The rotor and the shell of the vane pump were ameliorated, the vibration noise of the vane pump has been reduced much better. Using the software- Pro/E, to establish the three dimension modal of the main parts of the vane pump’s structure and assemble all the parts of the vane pump, amelioration of the vane pump to the performance of the vibration noise profoundly. Finally, used the finite element analysis software-ANSYS, the modal analysis of the vane pump’s main parts were taken, the effect of the amelioration of the vane pump’s structure to the vibration noise was analyzed profoundly, the result states that, the modal resonance frequency of the stator and the pump shell whose some parts of material was replaced with the damping material declines much bigger than the original structure, and their low frequency vibration mode shape occur in the damping material mainly, its vibration noise is low frequency更多还原