In the course of the service of long-distance oil/gas pipelines, due to corrosion, abrasion, and other reasons, the possibility of pipeline leakage is growing. In-service welding is an advanced technique employed in the repair of pipelines, and it has wide application in guaranteeing the safe transmission of petroleum or gas. The present studies on in-service welding, including experiments and numerical simulations, all assumed that the inner wall of the pipeline was in good condition without considering the influence of defects. This paper started from internal corrosive defects, through the finite element simulation method, investigated how the pressure of inner medium and defect size influence the burn-through of in-service welding. The results show that, compared with the intact pipe, pipeline with internal corrosive defect is more prone to burn-through. With the increase of medium pressure, the maximum radial deformation, the von Mises stress, and hoop stress at the defect area increase. The radial deformation has a certain time effect. The depth of defect has an evident impact on the radial deformation and the stresses. The radial deformation, the von Mises stress, and hoop stress increase with the deepening of the defect, while the impacts of the defect's length and width are less obvious.
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August 2018
Research-Article
Influence of Internal Corrosive Defect on the Burn-Through of In-Service Welding on Pipelines
Wu Qian,
Wu Qian
College of Mechanical and
Electrical Engineering,
China University of Petroleum,
No. 66, Changjiang West Road,
Huangdao District,
Qingdao 266580, China
e-mail: upcwuqian@163.com
Electrical Engineering,
China University of Petroleum,
No. 66, Changjiang West Road,
Huangdao District,
Qingdao 266580, China
e-mail: upcwuqian@163.com
Search for other works by this author on:
Wang Yong,
Wang Yong
College of Mechanical and
Electrical Engineering,
China University of Petroleum,
Huangdao District,
Qingdao 266580, China
e-mail: wangyong@upc.edu.cn
Electrical Engineering,
China University of Petroleum,
No. 66, Changjiang West Road
,Huangdao District,
Qingdao 266580, China
e-mail: wangyong@upc.edu.cn
Search for other works by this author on:
Han Tao,
Han Tao
College of Mechanical and
Electrical Engineering,
China University of Petroleum,
Huangdao District,
Qingdao 266580, China
e-mail: upchantao@163.com
Electrical Engineering,
China University of Petroleum,
No. 66, Changjiang West Road
,Huangdao District,
Qingdao 266580, China
e-mail: upchantao@163.com
Search for other works by this author on:
Ding Ling
Ding Ling
College of Mechanical and
Electrical Engineering,
China University of Petroleum,
Huangdao District,
Qingdao 266580, China
e-mail: ding_ling0425@163.com
Electrical Engineering,
China University of Petroleum,
No. 66, Changjiang West Road
,Huangdao District,
Qingdao 266580, China
e-mail: ding_ling0425@163.com
Search for other works by this author on:
Wu Qian
College of Mechanical and
Electrical Engineering,
China University of Petroleum,
No. 66, Changjiang West Road,
Huangdao District,
Qingdao 266580, China
e-mail: upcwuqian@163.com
Electrical Engineering,
China University of Petroleum,
No. 66, Changjiang West Road,
Huangdao District,
Qingdao 266580, China
e-mail: upcwuqian@163.com
Wang Yong
College of Mechanical and
Electrical Engineering,
China University of Petroleum,
Huangdao District,
Qingdao 266580, China
e-mail: wangyong@upc.edu.cn
Electrical Engineering,
China University of Petroleum,
No. 66, Changjiang West Road
,Huangdao District,
Qingdao 266580, China
e-mail: wangyong@upc.edu.cn
Han Tao
College of Mechanical and
Electrical Engineering,
China University of Petroleum,
Huangdao District,
Qingdao 266580, China
e-mail: upchantao@163.com
Electrical Engineering,
China University of Petroleum,
No. 66, Changjiang West Road
,Huangdao District,
Qingdao 266580, China
e-mail: upchantao@163.com
Ding Ling
College of Mechanical and
Electrical Engineering,
China University of Petroleum,
Huangdao District,
Qingdao 266580, China
e-mail: ding_ling0425@163.com
Electrical Engineering,
China University of Petroleum,
No. 66, Changjiang West Road
,Huangdao District,
Qingdao 266580, China
e-mail: ding_ling0425@163.com
1Corresponding author.
Contributed by the Pressure Vessel and Piping Division of ASME for publication in the JOURNAL OF PRESSURE VESSEL TECHNOLOGY. Manuscript received September 26, 2017; final manuscript received March 20, 2018; published online May 10, 2018. Assoc. Editor: Akira Maekawa.
J. Pressure Vessel Technol. Aug 2018, 140(4): 041401 (11 pages)
Published Online: May 10, 2018
Article history
Received:
September 26, 2017
Revised:
March 20, 2018
Citation
Qian, W., Yong, W., Tao, H., and Ling, D. (May 10, 2018). "Influence of Internal Corrosive Defect on the Burn-Through of In-Service Welding on Pipelines." ASME. J. Pressure Vessel Technol. August 2018; 140(4): 041401. https://doi.org/10.1115/1.4039843
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