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工程设计学报  2024, Vol. 31 Issue (3): 383-392    DOI: 10.3785/j.issn.1006-754X.2024.23.175
机械零部件与装备设计     
牙轮钻头密封试验技术研究及密封圈性能评价
况雨春1(),何鹏1,何璟彬2,魏琦3,周姝文4,董宗正1
1.西南石油大学 机电工程学院,四川 成都 610500
2.川庆钻探工程有限公司 长庆钻井总公司,陕西 西安 710018
3.成都吉锐时代触摸技术有限公司,四川 成都 610041
4.国家石油天然气管网集团有限公司 重庆天然气管道有限责任公司,重庆 408000
Research on sealing test technology of cone bit and evaluation of seal ring performance
Yuchun KUANG1(),Peng HE1,Jingbin HE2,Qi WEI3,Shuwen ZHOU4,Zongzheng DONG1
1.School of Mechanical and Electrical Engineering, Southwest Petroleum University, Chengdu 610500, China
2.Changqing Drilling Corporation, Chuanqing Drilling Engineering Co. , Ltd. , Xi'an 710018, China
3.Chengdu Jirui Times Touch Technology Co. , Ltd. , Chengdu 610041, China
4.Chongqing Natural Gas Pipeline Co. , Ltd. , National Petroleum and Natural Gas Pipeline Network Group Co. , Ltd. , Chongqing 408000, China
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摘要:

牙轮钻头在深井钻进时会受到高温、高压、摩擦以及腐蚀等多个因素的共同作用,直接影响密封圈的使用寿命,进而影响钻头寿命。为此,进行了牙轮钻头密封试验技术研究。首先,设计了牙轮钻头密封试验机,设计了试验机各功能模块;其次,对O形橡胶密封圈和径向对称扁平橡胶密封圈在多因素影响下的密封性能进行了有限元分析,同时结合接触应力评判准则和von Mises准则对密封圈性能进行了评价和对比;最后,进行了密封圈在多因素作用下的寿命测试实验,并将实验结果与仿真结果进行了对比。实验结果验证了试验机进行牙轮钻头密封试验的可行性及可靠性。所设计的牙轮钻头密封试验机能预测牙轮钻头密封圈的使用寿命,具有广阔的工程应用前景。

关键词: 牙轮钻头密封试验技术密封圈性能评价寿命测试    
Abstract:

Cone bit in deep drilling is subject to multiple factors such as high temperature, high pressure, friction and corrosion during deep well drilling, which directly affect the service life of the seal ring, and then affect the life of the bit. Therefore, the sealing test technology of cone bit was studied. Firstly, the sealing test machine of cone bit was designed, and its functional modules were designed; secondly, the sealing performances of O-shaped rubber seal ring and radially symmetrical flat rubber seal ring under the influence of multiple factors were analyzed by finite element method, and the contact stress judge criterion and von Mises criterion were used to evaluate and compare the seal ring performances; finally, the life test of the seal ring under the action of multiple factors was carried out, and the experimental results were compared with the simulation results. The experimental results verified the feasibility and reliability of the test machine for cone bit sealing test. The designed sealing test machine of cone bit can predict the service life of cone bit seal ring, and has a broad application prospect in engineering.

Key words: cone bit    sealing test technique    seal ring    performance evaluation    life test
收稿日期: 2023-06-07 出版日期: 2024-06-27
CLC:  TE 921.1  
基金资助: 国家自然科学基金联合基金资助项目(U19A2097)
作者简介: 况雨春(1971—),男,四川达州人,教授,博士生导师,博士,从事机械设计及理论、石油矿场机械、油气勘探开发工程、岩石破碎学等研究,E-mail: swpikyc@126.com, http://orcid.org/0000-0001-8410-3733
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引用本文:

况雨春,何鹏,何璟彬,魏琦,周姝文,董宗正. 牙轮钻头密封试验技术研究及密封圈性能评价[J]. 工程设计学报, 2024, 31(3): 383-392.

Yuchun KUANG,Peng HE,Jingbin HE,Qi WEI,Shuwen ZHOU,Zongzheng DONG. Research on sealing test technology of cone bit and evaluation of seal ring performance[J]. Chinese Journal of Engineering Design, 2024, 31(3): 383-392.

链接本文:

https://www.zjujournals.com/gcsjxb/CN/10.3785/j.issn.1006-754X.2024.23.175        https://www.zjujournals.com/gcsjxb/CN/Y2024/V31/I3/383

图1  牙轮钻头密封试验机结构1—动力模块;2—传动模块;3—试验模块;4—热源调温装置;5—氮气瓶;6—泥浆罐。
图2  牙轮钻头剖面图
试验序号压差
10.068 5
20.1289
30.468 8
40.405 6
50.574 1
60.298 5
70.344 4
表1  牙轮钻头密封圈压差的绝对均值 (MPa)
图3  动试件三维结构示意图
图4  静试件三维结构示意图
图5  动试件与静试件的装配示意图
图6  转轴三维结构示意图
图7  左套筒及试验机底座三维结构示意图
图8  右套筒三维结构示意图
图9  左端盖三维结构示意图
图10  右端盖三维结构示意图
图11  密封圈等效应力云图
图12  2种密封圈等效应力对比
图13  密封圈接触应力云图
图14  2种密封圈接触应力对比
图15  密封圈应力随压差的变化曲线
图16  密封圈应力随温度的变化曲线
图17  密封圈应力随转速的变化曲线
图18  牙轮钻头密封圈寿命测试流程
样品类型样品编号转速/ (r/min)温度/℃压差/MPa工作寿命/h
O形橡胶密封圈O1-12601600.930
O1-229
径向对称扁平橡胶密封圈B1-157
B1-2175158
B1-358
表2  牙轮钻头密封圈寿命测试实验1的参数及测试结果
样品类型样品编号转速/(r/min)温度/℃压差/MPa工作寿命/h
O形橡胶密封圈O2-14501500.828
O2-226
径向对称扁平橡胶密封圈B2-11600.870
B2-268
表3  牙轮钻头密封圈寿命测试实验2的参数及测试结果
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