期刊
MEASUREMENT
卷 64, 期 -, 页码 112-122出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.measurement.2014.12.046
关键词
PIG; Rubber friction; Girth weld; Dynamic
资金
- National Natural Science Foundation of China [51175514]
- Program for New Century Excellent Talents in University [NCET-13-1028]
- Science Foundation of China University of Petroleum, Beijing [KYJJ2012-04-17]
Pipeline inspection gauges (PIGs) are needed for operations such as dewatering, cleaning and internal inspection of the oil and gas pipelines to facilitate improvement in efficiency and safety. The friction and dynamic characteristics, as the sealing disc of a PIG passes through the girth weld in a pipe, has been directly studied using a custom-built experimental setup. The contact behavior between sealing disc and girth weld was analyzed using finite element methods. A two-dimensional section analytical link model of the sealing disc is introduced here and was simulated using the mechanic dynamic analysis software Adams. Our results show that the process of the sealing disc of the PIG passing through the girth weld in the pipe can be separated into three distinct stages: (1) start-up stage, (2) climbing stage, and (3) slope stage. At first, the PIG decelerates due to the friction force and then accelerates after passing through the girth weld. The acceleration and deceleration processes produce axial vibration in PIG. (C) 2014 Elsevier Ltd. All rights reserved.
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