Crosspoint Localization of Spiral and Girth Welds of Spiral Steel Pipelines

Crosspoint of spiral and girth welds of spiral steel pipelines transporting high-pressure oil and gas is easy to crack due to welding defects and corrosion, so routine excavation and careful inspection are required. In order to reduce the workload and cost of excavation, it is necessary to determine...

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Autores principales:	Jian Li, Mingze Li, Xinjing Huang, Feng Hao, Xiaobo Rui, Yu Zhang
Formato:	article
Lenguaje:	EN
Publicado:	IEEE 2020
Materias:	Spiral pipelines welds magnetic field spherical detector Electrical engineering. Electronics. Nuclear engineering TK1-9971
Acceso en línea:	https://doaj.org/article/999d92572a314b22a47c77ab1f4dae9a
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spelling	oai:doaj.org-article:999d92572a314b22a47c77ab1f4dae9a2021-11-19T00:04:55ZCrosspoint Localization of Spiral and Girth Welds of Spiral Steel Pipelines2169-353610.1109/ACCESS.2020.3020793https://doaj.org/article/999d92572a314b22a47c77ab1f4dae9a2020-01-01T00:00:00Zhttps://ieeexplore.ieee.org/document/9183928/https://doaj.org/toc/2169-3536Crosspoint of spiral and girth welds of spiral steel pipelines transporting high-pressure oil and gas is easy to crack due to welding defects and corrosion, so routine excavation and careful inspection are required. In order to reduce the workload and cost of excavation, it is necessary to determine the crosspoint’s angular position on the girth weld. This article proposes a low-cost and high-efficiency method for locating the spiral-girth weld crosspoint based on the inner Spherical Detector (SD). Theoretical analysis and experiments demonstrate that the magnetometer with a smaller lift-off could detect more noticeable magnetic valley of the spiral welds at the pipe bottom, so a smaller SD should be used; the spiral direction can be determined by the phase difference of the dual-channel magnetic signals, when dual magnetometers are symmetrically fixed about the median vertical plane on the rotation axis of the SD. When the girth weld, at least one spiral weld and the spiral direction are detected and determined, the crosspoint’s angular position can be calculated. The maximum localization error of the crosspoint is less than 30° and the average error is less than 20°, that is, no more than one hour’s angle, whose accuracy is sufficient for excavation and maintenance in the field, because it will reduce the amount of excavation by nearly half.Jian LiMingze LiXinjing HuangFeng HaoXiaobo RuiYu ZhangIEEEarticleSpiral pipelinesweldsmagnetic fieldspherical detectorElectrical engineering. Electronics. Nuclear engineeringTK1-9971ENIEEE Access, Vol 8, Pp 160387-160395 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Spiral pipelines welds magnetic field spherical detector Electrical engineering. Electronics. Nuclear engineering TK1-9971
spellingShingle	Spiral pipelines welds magnetic field spherical detector Electrical engineering. Electronics. Nuclear engineering TK1-9971 Jian Li Mingze Li Xinjing Huang Feng Hao Xiaobo Rui Yu Zhang Crosspoint Localization of Spiral and Girth Welds of Spiral Steel Pipelines
description	Crosspoint of spiral and girth welds of spiral steel pipelines transporting high-pressure oil and gas is easy to crack due to welding defects and corrosion, so routine excavation and careful inspection are required. In order to reduce the workload and cost of excavation, it is necessary to determine the crosspoint’s angular position on the girth weld. This article proposes a low-cost and high-efficiency method for locating the spiral-girth weld crosspoint based on the inner Spherical Detector (SD). Theoretical analysis and experiments demonstrate that the magnetometer with a smaller lift-off could detect more noticeable magnetic valley of the spiral welds at the pipe bottom, so a smaller SD should be used; the spiral direction can be determined by the phase difference of the dual-channel magnetic signals, when dual magnetometers are symmetrically fixed about the median vertical plane on the rotation axis of the SD. When the girth weld, at least one spiral weld and the spiral direction are detected and determined, the crosspoint’s angular position can be calculated. The maximum localization error of the crosspoint is less than 30° and the average error is less than 20°, that is, no more than one hour’s angle, whose accuracy is sufficient for excavation and maintenance in the field, because it will reduce the amount of excavation by nearly half.
format	article
author	Jian Li Mingze Li Xinjing Huang Feng Hao Xiaobo Rui Yu Zhang
author_facet	Jian Li Mingze Li Xinjing Huang Feng Hao Xiaobo Rui Yu Zhang
author_sort	Jian Li
title	Crosspoint Localization of Spiral and Girth Welds of Spiral Steel Pipelines
title_short	Crosspoint Localization of Spiral and Girth Welds of Spiral Steel Pipelines
title_full	Crosspoint Localization of Spiral and Girth Welds of Spiral Steel Pipelines
title_fullStr	Crosspoint Localization of Spiral and Girth Welds of Spiral Steel Pipelines
title_full_unstemmed	Crosspoint Localization of Spiral and Girth Welds of Spiral Steel Pipelines
title_sort	crosspoint localization of spiral and girth welds of spiral steel pipelines
publisher	IEEE
publishDate	2020
url	https://doaj.org/article/999d92572a314b22a47c77ab1f4dae9a
work_keys_str_mv	AT jianli crosspointlocalizationofspiralandgirthweldsofspiralsteelpipelines AT mingzeli crosspointlocalizationofspiralandgirthweldsofspiralsteelpipelines AT xinjinghuang crosspointlocalizationofspiralandgirthweldsofspiralsteelpipelines AT fenghao crosspointlocalizationofspiralandgirthweldsofspiralsteelpipelines AT xiaoborui crosspointlocalizationofspiralandgirthweldsofspiralsteelpipelines AT yuzhang crosspointlocalizationofspiralandgirthweldsofspiralsteelpipelines
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Crosspoint Localization of Spiral and Girth Welds of Spiral Steel Pipelines

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