【摘要】 为解决螺杆泵井杆柱力学模型过于简单的问题,对抽油杆柱的扭转载荷与轴向载荷进行了分析和计算。结合第四强度理论,对杆柱强度条件进行了分析,提出了多级杆柱的设计思想,得出把抽油杆柱设计成多级杆柱的等强度组合设计方法。按要求和标准确定多级杆柱的长度和直径,然后按强度条件进行校核,并给出了设计实例。更多还原

【Abstract】 In order to solve the problem that mechanical calculation model of screw pump rod string was too simple,torsion load and axial force of sucker rod string,according to the fourth intensity theory,intensity condition of sucker rod string were calculated and analyzed.The thought of the design of multi-stage of the rod string of screw pump were put forward.Equal strength design method of multi-stage compounding rod string was obtained,i.e.the diameter and length of different rods were calculated according to demand and standard firstly,and then they were checked according to strength condition.The application instance is shown in this article.更多还原