Please wait a minute...
工程设计学报
工程设计学报  2018, Vol. 25 Issue (2): 167-172    DOI: 10.3785/j.issn.1006-754X.2018.02.006
优化设计     
单金属密封的结构优化及其密封性能研究
张毅, 张晓东, 常学平, 吴倩
西南石油大学 机电工程学院, 四川 成都 610500
Research on structure optimization and seal performance of single metal seal
ZHANG Yi, ZHANG Xiao-dong, CHANG Xue-ping, WU Qian
School of Mechatronic Engineering, Southwest Petroleum University, Chengdu 610500, China
 全文: PDF(3444 KB)   HTML
摘要：

针对油气田勘探中，复杂的钻井工况导致动密封工作性能极不稳定的问题，结合单金属密封结构和井底高压环境，利用有限元方法对单金属密封受压情况下的接触压力进行分析。用雷诺方程计算单金属动密封的泄漏率，以减小最大接触压力和泄漏率为优化目标，利用正交试验和F评价方法对单金属密封结构参数进行优化，得到密封结构参数对密封面接触压力和泄漏率的影响情况，并将每个水平数对应的优化目标计算结果分别取平均值，得到不同水平影响下接触压力和泄露率平均值的变化趋势，从而确定密封结构的最优水平值，并借助有限元仿真对优化前后的密封性能进行对比。最后根据优化前后的密封结构参数加工2套密封试件，进行密封实验。仿真分析和实验结果表明：高压工况下优化前的密封面内侧磨损严重，钻井液颗粒容易侵入密封面；而优化后密封面的最大接触压力有所降低，动密封面的最高温度和泄漏率明显降低。研究结果对改进单金属密封的工作性能、提高井下动密封的可靠性有重要的现实意义。
关键词： 单金属密封;  有限元;  接触压力;  泄漏率;  动密封实验    
Abstract:

In the exploration of oil and gas field, for the instability of the dynamic seal performance because of the complex drilling conditions, the finite element method was used to analyze the contact pressure of single metal seal under the working condition which combined with single metal sealing structure and high pressure environment. Then the leakage rate of the single metal seal was calculated by Reynolds equation. On this basis, the optimization of the dynamic seal was completed by orthogonal experiment and F evaluation method with the objective to reduce maximum contact pressure and leakage rate. Finally, the influence of the structure parameters of single metal seal on the contact pressure and leakage rate of the sealing surface was obtained, and the average values of the calculated results of the optimized target corresponding to the same number of levels were calculated. According to the calculated results, the variation trend of the average value for the contact pressure and the leakage rate were obtained to identify the optimal level of seal structure under different levels. The performance of the dynamic seal before and after the optimization was compared using the finite element simulation. According to the seal parameters, two sets of seal specimens were processed, and sealing experiment was carried out. Simulation and experimental results verified that the inner side of the seal surface was worn seriously under high pressure condition, and the drilling fluid particles were easy to invade the sealing surface, also the maximum contact pressure was decreased after optimization. Meanwhile, the maximum temperature and leakage rate of the seal were significantly reduced. The research has important practical significance to improve the performance of the single metal seal and the reliability of the down-hole dynamic seal.
Key words: single metal seal    finite element    contact pressure    leakage rate    dynamic seal test
收稿日期: 2017-04-13 出版日期: 2018-04-28
CLC:  TH136  
基金资助:

国家自然科学基金资助项目（51674216）；四川省教育厅科研项目（16ZA0062）
作者简介: 张毅(1983-),男,河南南阳人,讲师,博士,从事动密封及井下工具设计等研究,E-mail:dream5568@126.com,http://orcid.org/0000-0002-1650-3898
服务　　
把本文推荐给朋友
加入引用管理器
E-mail Alert
RSS
作者相关文章　　
张毅
张晓东
常学平
吴倩

引用本文:

张毅, 张晓东, 常学平, 吴倩. 单金属密封的结构优化及其密封性能研究[J]. 工程设计学报, 2018, 25(2): 167-172.

ZHANG Yi, ZHANG Xiao-dong, CHANG Xue-ping, WU Qian. Research on structure optimization and seal performance of single metal seal. Chinese Journal of Engineering Design, 2018, 25(2): 167-172.

链接本文:

https://www.zjujournals.com/gcsjxb/CN/10.3785/j.issn.1006-754X.2018.02.006    或    https://www.zjujournals.com/gcsjxb/CN/Y2018/V25/I2/167

[1] AYALA H M, HART D P, YEH O C, et al. Wear of elastomeric seal in abrasive slurries[J]. Wear, 1998, 220(1):9-21.
[2] SCHMIDT S R, WITTRY A E. Metal bearing seal technology improves drilling efficiency of rolling cutter bits in high-rpm north sea applications[C]//SPE Drilling Conference, Amsterdam, Mar. 11-14, 1991.
[3] DAY J, YU J, BAKER R. Innovation bearing and seal package improves roller cone bit performance and reliability[C]//SPE Asia Pacific Oil and Gas Conference, Amsterdam, Oct. 18-20, 2010.
[4] TARIQ A, MAHMOUD A H, TAMER W, et al. New slim hole technology maximizes productivity in Middle East horizontal drilling programs[C]//SPE Drilling Conference, Amsterdam, Feb. 23-25, 2005.
[5] BYBEE K. Step change in performance:upgraded bit technology improves drilling economics[C]//SPE Annual Technical Conference and Exhibition, San Antonio, Sep. 24-27, 2006.
[6] XIONG S H, SALANT R F. A numerical model of a rock bit bearing seal[J]. Tribology Transactions, 2000, 43(3):542-548.
[7] XIONG S H, SALANT R F. A non-axisymmetric steady state model of a mechanical seal for down-hole tools[J]. Journal of Tribology, 2002, 124(1):144-150.
[8] XIONG S H, SALANT R F. A dynamic model of a contacting mechanical seal for down-hole tools[J]. Journal of Tribology, 2003, 125(3):391-402.
[9] 罗纬,何其翔.牙轮钻头金属浮动密封研究及设计[J].石油机械,1994,22(12):16-19. LUO Wei, HE Qi-xiang. Research on metal floating seal for roller bits[J]. Petroleum Machinery, 1994, 22(12):16-19.
[10] 张宝生,陈家庆.牙轮钻头用新型单金属浮动密封研究[J].石油机械,2009,37(11):32-35. ZHANG Bao-sheng, CHEN Jia-qing. Study on a new type of single metal floating seal for cone bit[J]. Petroleum Machinery, 2009, 37(11):32-35.
[11] 孙健.浮动端面结构的性能分析[J].石油矿场机械,2006,35(1):14-18. SUN Jian. Performance analysis of floating end face[J]. Oil Field Machinery, 2006, 35(1):14-18.
[12] 张晓东,张毅,李一岚.单金属密封总装设计和润滑理论分析[J].机械设计与研究,2013,29(6):132-137. ZHANG Xiao-dong, ZHANG Yi, LI Yi-lan. Design and lubrication theory analysis of single metal seal assembly[J]. Mechanical Design and Research, 2013, 29(6):132-137.
[13] ZHOU Y, HUANG Z, TAN L, et al. Cone bit bearing seal failure analysis based on the finite element analysis[J]. Engineering Failure Analysis, 2014, 45(1):292-299.
[14] SCHMIDT T, ANDRE M, POLL G. A transient 2D-finite-element approach for the simulation of mixed lubrication effects of reciprocating hydraulic rod seals[J]. Tribology International, 2010, 43(10):1775-1785.
[15] NIKAS G K, SAYLES R S. Study of leakage and friction of flexible seals for steady motion via a numerical approximation method[J]. Tribology International, 2006, 39(9):921-936.
[16] ZHANG Y, LI X, YUAN Z, et al. Orthogonal array design experiments for optimizing the separation of nine pesticides by micellar electrokinetic chromatography[J]. Microchemical Journal, 2002, 73(3):307-315.
[17] ZHAO H, BARBER G C, ZOU Q. A study of flank wear in orthogonal cutting with internal cooling[J]. Wear, 2002, 253(9/10):957-962.
[18] 陈魁.试验设计与分析[M].北京:清华大学出版社,2005:7. CHEN Kui. Experimental design and analysis[M]. Beijing:Tsinghua University Press, 2005:7.
[19] JIA X H, GUO F, HUANG L, et al. Parameter analysis of the radial lip seal by orthogonal array method[J]. Tribology International, 2013, 64(3):96-102.
[1] 孙光明,王奕苗,万仟,弓堃,汪文津,赵坚. 考虑装配变形的精密机床床身优化设计[J]. 工程设计学报, 2022, 29(3): 318-326.
[2] 丰飞,傅雨晨,范伟,马举. 三角混合两级杠杆微位移放大机构的设计及性能分析[J]. 工程设计学报, 2022, 29(2): 161-167.
[3] 李阳, 聂羽飞. 钠燃烧试验厂房隔热密封门的设计与分析[J]. 工程设计学报, 2022, 29(1): 115-122.
[4] 陈洪月, 张站立, 吕掌权. 线性压缩机圆柱臂盘簧的设计及性能研究[J]. 工程设计学报, 2021, 28(4): 504-510.
[5] 严国平, 周俊宏, 钟飞, 李哲, 周宏娣, 彭震奥. 纸塑复合袋磁力压紧纠偏装置设计及优化[J]. 工程设计学报, 2021, 28(3): 367-373.
[6] 刘永江, 彭宣霖, 唐雄辉, 李华, 齐紫梅. 轴流散热风机共振失效分析与优化设计[J]. 工程设计学报, 2021, 28(2): 203-209.
[7] 李宗豪, 朱军, 陈伟球. 海上风电导管架陆地建造过程中的应力分析[J]. 工程设计学报, 2021, 28(2): 218-226.
[8] 王成军, 李帅. 三关节式软体驱动器的设计及其弯曲性能分析[J]. 工程设计学报, 2021, 28(2): 227-234.
[9] 黄伟, 徐建, 陆新征, 胡明祎, 廖文杰. 动力装备和建筑楼盖的动力吸振研究[J]. 工程设计学报, 2021, 28(1): 25-32.
[10] 周超, 秦瑞江, 芮晓明. 风载荷作用下V形绝缘子串的力学特性分析[J]. 工程设计学报, 2021, 28(1): 95-104.
[11] 黄维, 刘惟伊, 刘志恩, 卢炽华. 基于多目标遗传算法的实验目标车底盘结构优化[J]. 工程设计学报, 2021, 28(1): 80-88.
[12] 曾琪, 宾光富, 李超, 陈立锋. 联轴器扭转刚度对潜油电泵细长串联轴系扭振特性的影响研究[J]. 工程设计学报, 2021, 28(1): 89-94.
[13] 周超, 王阳, 芮晓明. 500 kV输电线路跳线风偏有限元分析与试验研究[J]. 工程设计学报, 2020, 27(6): 713-719.
[14] 李玄, 周双武, 路松, 丁冰晓. 基于二级杠杆机构的二自由度微定位平台设计与分析[J]. 工程设计学报, 2020, 27(4): 533-540.
[15] 李成兵, 雷鹏. 5 000 m3立式拱顶储罐应力分析与弱顶性能评价[J]. 工程设计学报, 2020, 27(2): 182-190.