基于有限元计算的泥浆泵泵体结构改进分析

Mud pump case finite element optimization design and structure improvement

研究了泥浆泵泵体的应力分布,并对泵体进行结构改进,以提高泥浆泵的整体性能.采用有限元法对1000 HP型泥浆泵泵体基于1 300 HP工况的最大受力条件进行静力分析.结果表明,泵体结构应力分布不均匀,从动轴承轴承座与侧板接触位置、侧板的螺纹孔、前箱立筋板等附近存在应力集中.根据静力分析结果,对泵体进行结构改进,并对改进后的泵体进行有限元分析,直到强度满足要求.改进后的泥浆泵,在不增加总体积和总重量的基础上,功率从1 000HP提高到1 300 HP,有效地降低了陆地钻井平台的成本,提高了经济效益.

To improve the overall capability of a mud pump,the stress distributions of a pump body was analyzed,and the pump body structure was improved.The three-dimensional finite element method was adopted to analyze the stress and strain on a 1000 HP mud pump body,under the static analysis condition based on the 1 300 HP mud pump maximum load conditions.The results showed that the pump body structure of stress distribution was uneven.The stress concentration might located at a driven bearing block and a side plate contact position,the screw thread hole of a side plate,and a chamber stud plate.The pump body was improved according to the results of static analysis.Then the finite element analysis is carried out again,until the required strength is obtained.Without the increase of the total volume and total weight,the improved mud pump power was increased from 1 000 HP to 1 300 HP.Thusly,this improvement effectively reduce the cost of a land drilling platform and improve economic benefit.