油套管联接拧紧扭矩的计算方法  

Calculation Method of Tightening Torque on Threaded Connections

作　　者：陈守俊[1] 李强[1] 张毅 安琦[1] 

机构地区：[1]华东理工大学机械与动力工程学院,上海200237 [2]无锡西姆莱斯石油专用管制造有限公司,江苏无锡214028

出　　处：《华东理工大学学报（自然科学版）》2010年第5期737-742,共6页Journal of East China University of Science and Technology

摘　　要：油套管联接过程中,拧紧扭矩是影响油套管联接质量的主要因素之一。在弹性力学的基础上,结合厚壁圆筒理论,根据螺纹牙的几何尺寸,建立了数学模型,通过计算每圈螺纹牙表面的摩擦扭矩,得到油套管上扣时所需拧紧扭矩的计算公式。建立了能够模拟螺纹拧紧过程的摩擦力测试试验装置,试验测得了螺纹牙接触表面的摩擦因数。以P-110S油套管为计算实例,将理论计算得到的拧紧扭矩与实际操作中的上扣扭矩进行比较,结果表明所建立的理论模型及计算公式是合理的,此研究为计算油套管上扣扭矩提供一种精确的计算方法。Tightening torque is one of the main factors that affect the connection quality in threaded connections.On the basis of elastic mechanics and by use of the thick-walled-cylindrical theory,an analytical model was established according with the geometric parameters of thread tooth,and then the calculation method of tightening torque on threaded connections was obtained by calculating the frictional torque on each threaded surface.Moreover,the friction coefficient on the contact threaded surface was also measured by experimental test.Taking P-110S threaded connection as a calculating example and comparing the tightening torque obtained by analytical model with the make-up torque in application, the analytical model and calculation method proposed in this paper are reasonable and it offers an accurate method to calculate the make-up torque in threaded connections.

关 键 词：油套管联接 拧紧扭矩 理论模型 摩擦因数 计算方法 

分 类 号：TH131.3[机械工程—机械制造及自动化] TH123.4