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Citation:
 Yongjun Hou,Qian Tang,Zhixing Wu,et al.Structural Design and Performance Analysis of a Deep-Water Ball Joint Seal[J].Journal of Marine Science and Application,2018,(2):224-232.[doi:10.1007/s11804-018-0030-8]
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Structural Design and Performance Analysis of a Deep-Water Ball Joint Seal

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Title:
Structural Design and Performance Analysis of a Deep-Water Ball Joint Seal
Author(s):
Yongjun Hou1 Qian Tang1 Zhixing Wu2 Xiaoming Liu2
Affilations:
Author(s):
Yongjun Hou1 Qian Tang1 Zhixing Wu2 Xiaoming Liu2
1 School of Mechanical and Electrical Engineering, Southwest Petroleum University, Chengdu 610500, China;
2 Offshore Oil Engineering Co., Ltd. Special Equipment Company, Tianjin 300450, China
Keywords:
Deep-water drillingBall jointSpherical sealNonlinear theoryFinite element techniqueSealing performance
分类号:
-
DOI:
10.1007/s11804-018-0030-8
Abstract:
To overcome the current difficulties of high-precision machining and the high manufacturing and maintenance costs of spherical seals for deep-water drilling ball joints, a new spherical seal technique is proposed in this paper. The spherical seal is mainly composed of silicone rubber and polytetrafluoroethylene (PTFE). Rational structural design makes the seal independent from the ball and other components, making it easy to replace if leakage occurs at its surface. PTFE can elastically deform over a certain deformation range, which guarantees that two sealing surfaces fit tightly together. O-Ring and PTFE elasticity makes up for any lack of accuracy during spherical machining and decreases the machining precision requirements for spherical surfaces. Using a finite element technique and nonlinear theory, the performance of the spherical seal under the influence of various factors is determined. The results show that the spherical seal designed in this paper exhibits excellent sealing performance under lowtemperature and high-pressure conditions. The spherical seal, a combination of an O-ring and PTFE, has the advantages of cheap manufacturing and maintenance costs and excellent sealing performance.

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Memo

Memo:
Received date:2017-07-18;Accepted date:2017-12-27。
Corresponding author:Qian Tang,2661778258@qq.com
Last Update: 2018-10-11