密封加强型快速连接特殊螺纹关键结构参数优化研究
王儒朋1，席晓磊2，焦巍3，张文星3，庞德志4，马继超4，肖华平4
（1.中海油能源发展装备技术有限公司加工制造分公司，天津 300452；2.中海石油(中国)有限公司深圳分公司 深水工程技术中心，广东 深圳 518067；3.中海油能源发展股份有限公司工程技术分公司，天津 300452；4.中国石油大学（北京） 机械与储运工程学院，北京 102249）
摘要：影响密封加强型快速连接特殊螺纹性能的主要因素包括密封面结构、扭矩台肩结构以及连接螺纹结构参数，对这些结构进行优化设计可以降低应力集中、保证密封性能、减少塑性变形，从而保障油套管的结构完整性和密封完整性。为了改善密封性能，提高连接强度、抗扭矩能力和承载能力，使其能适应更复杂的工作环境，对主要螺纹结构参数进行了优化设计。通过有限元分析和模拟计算研究了不同参数条件下的连接性能，结果表明，螺纹两端应力大、中间部分应力小，所以螺纹因拉伸应力过大而产生的失效容易发生在螺纹两端。
关键词：快速连接；密封加强；有限元分析；优化设计
中图分类号：TH131.3 文献标志码：A doi：10.3969/j.issn.1006-0316.2023.07.004
文章编号：1006-0316 (2023) 07-0025-07
Optimization on key Structural Parameters of Sealing Reinforced Quick-Connect Special Thread
WANG Rupeng1，XI Xiaolei2，JIAO Wei3，ZHANG Wenxing3，PANG Dezhi4，MA Jichao4，XIAO Huaping4
( 1.CNOOC Energy Development Equipment Technology Co., Ltd., Machining and Manufacturing Branch, Tianjin 300452, China; 2.Deepwater Engineering Technology Center, Shenzhen Branch of CNOOC (China) Co., Ltd., Shenzhen 518067, China; 3.CNOOC Energy Development Co., Ltd., Engineering Technology Branch, Tianjin 300452, China; 4.School of Mechanical and Transportation Engineering, China University of Petroleum-Beijing, Beijing 102249, China )
Abstract：The core of the design of the sealing reinforced quick-connect special thread is to optimize the sealing surface, torque shoulder and connection thread parameters, so as to reduce stress concentration, ensure sealing performance, and reduce plastic deformation to ensure the structural integrity of the casing and seal integrity. Through the optimization design of the structure of the sealing reinforced quick-connect casing, it achieves the effects of good sealing and improving connection strength, torque resistance and bearing capacity, which ensures that it adapts to the complex working environment. The results show that the stress at both ends of the thread is large, and the stress in the middle part is relatively small, so the failure caused by excessive tensile stress is likely to occur at both ends of the thread.
Key words：quick connection；sealing reinforced；finite element analysis；optimal design
———————————————
收稿日期：2022-9-29
基金项目：中国海洋石油集团有限公司“三新三化”项目——海上油田特殊螺纹研制及标准化建设研究（JTKY-SXSH-2021-HF-10）
作者简介：王儒朋（1987－），女，黑龙江兰西人，硕士研究生，高级工程师，主要从事海洋石油专用管材及钻采机具设计研发制造工作，E-mail：wangrp4@cnooc.com.cn。
（1.中海油能源发展装备技术有限公司加工制造分公司，天津 300452；2.中海石油(中国)有限公司深圳分公司 深水工程技术中心，广东 深圳 518067；3.中海油能源发展股份有限公司工程技术分公司，天津 300452；4.中国石油大学（北京） 机械与储运工程学院，北京 102249）
摘要：影响密封加强型快速连接特殊螺纹性能的主要因素包括密封面结构、扭矩台肩结构以及连接螺纹结构参数，对这些结构进行优化设计可以降低应力集中、保证密封性能、减少塑性变形，从而保障油套管的结构完整性和密封完整性。为了改善密封性能，提高连接强度、抗扭矩能力和承载能力，使其能适应更复杂的工作环境，对主要螺纹结构参数进行了优化设计。通过有限元分析和模拟计算研究了不同参数条件下的连接性能，结果表明，螺纹两端应力大、中间部分应力小，所以螺纹因拉伸应力过大而产生的失效容易发生在螺纹两端。
关键词：快速连接；密封加强；有限元分析；优化设计
中图分类号：TH131.3 文献标志码：A doi：10.3969/j.issn.1006-0316.2023.07.004
文章编号：1006-0316 (2023) 07-0025-07
Optimization on key Structural Parameters of Sealing Reinforced Quick-Connect Special Thread
WANG Rupeng1，XI Xiaolei2，JIAO Wei3，ZHANG Wenxing3，PANG Dezhi4，MA Jichao4，XIAO Huaping4
( 1.CNOOC Energy Development Equipment Technology Co., Ltd., Machining and Manufacturing Branch, Tianjin 300452, China; 2.Deepwater Engineering Technology Center, Shenzhen Branch of CNOOC (China) Co., Ltd., Shenzhen 518067, China; 3.CNOOC Energy Development Co., Ltd., Engineering Technology Branch, Tianjin 300452, China; 4.School of Mechanical and Transportation Engineering, China University of Petroleum-Beijing, Beijing 102249, China )
Abstract：The core of the design of the sealing reinforced quick-connect special thread is to optimize the sealing surface, torque shoulder and connection thread parameters, so as to reduce stress concentration, ensure sealing performance, and reduce plastic deformation to ensure the structural integrity of the casing and seal integrity. Through the optimization design of the structure of the sealing reinforced quick-connect casing, it achieves the effects of good sealing and improving connection strength, torque resistance and bearing capacity, which ensures that it adapts to the complex working environment. The results show that the stress at both ends of the thread is large, and the stress in the middle part is relatively small, so the failure caused by excessive tensile stress is likely to occur at both ends of the thread.
Key words：quick connection；sealing reinforced；finite element analysis；optimal design
———————————————
收稿日期：2022-9-29
基金项目：中国海洋石油集团有限公司“三新三化”项目——海上油田特殊螺纹研制及标准化建设研究（JTKY-SXSH-2021-HF-10）
作者简介：王儒朋（1987－），女，黑龙江兰西人，硕士研究生，高级工程师，主要从事海洋石油专用管材及钻采机具设计研发制造工作，E-mail：wangrp4@cnooc.com.cn。
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