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WO2008143546A1 - Dispositif de démagnétisation locale d'éléments de canalisations - Google Patents

Dispositif de démagnétisation locale d'éléments de canalisations Download PDF

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Publication number
WO2008143546A1
WO2008143546A1 PCT/RU2008/000134 RU2008000134W WO2008143546A1 WO 2008143546 A1 WO2008143546 A1 WO 2008143546A1 RU 2008000134 W RU2008000134 W RU 2008000134W WO 2008143546 A1 WO2008143546 A1 WO 2008143546A1
Authority
WO
WIPO (PCT)
Prior art keywords
magnetic
magnetic circuit
magnetic field
pipe
sensors
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/RU2008/000134
Other languages
English (en)
Russian (ru)
Inventor
Andrei Ivanovich Sinev
Anatoly Mikhailovich Kuznetsov
Evgeny Sergeevich Sannikov
Gennady Ivanovich Filippov
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of WO2008143546A1 publication Critical patent/WO2008143546A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F13/00—Apparatus or processes for magnetising or demagnetising
    • H01F13/006—Methods and devices for demagnetising of magnetic bodies, e.g. workpieces, sheet material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/235—Preliminary treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/04—Tubular or hollow articles
    • B23K2101/10—Pipe-lines

Definitions

  • the present invention relates to techniques for the demagnetization of pipes, pipe joints of field and main gas pipelines of all categories and other magnetized products.
  • the closest, in technical essence to the proposed invention is a device for compensating the magnetic field of the pipeline (certificate for utility model JNY3271, IPC H01F13 / 00), consisting of a demagnetizing cable wound around the pipe and supplied with direct current from the welding rectifier, demagnetizing module They are made in the form of split rings containing multi-turn coils connected with multi-pin connectors located in a non-magnetic metal frame with sensors of magnitude and direction of the magnetic field pivotally mounted on it in the area of the weld, and impose it on both sides of the weld, and the compensation current the demagnetizing module is fed through an electronic control unit included in the feedback system with magnetic field sensors.
  • the disadvantage of this technical solution is the increase in complexity due to the winding of the demagnetizing cable on the pipe and increased power consumption.
  • the objective of the invention is to reduce energy consumption and complexity.
  • the problem is achieved in that in the device of local demagnetization of pipeline elements, consisting of a demagnetizing cable, supplied with direct current from a welding rectifier and made in the form of a multi-turn coil connected using sockets located in a metal frame with magnetic field magnitude and direction sensors mounted on it in the area of the welded seam, impose on both sides of the welded seam, and the current is supplied through the control unit included in the feedback system from the sensor by the magnetic field, the frame is made up of an open ferromagnetic magnetic circuit with a coil located inside, pole pieces and non-magnetic rectangular plates with a lower cylindrical diameter surface equal to the outer diameter of the pipe, which are alternated relative to the sides of the magnetic circuit, and coated with fireproof material.
  • FIG. 1 shows a demagnetization circuit
  • FIG. 2 is a section A-A of a device for local demagnetization of pipelines.
  • the device for local demagnetization of pipelines contains a frame 1, on the inside of which a multi-turn coil 2 of a demagnetizing cable 3 is wound.
  • the frame 1 is made of a ferromagnetic magnetic circuit 4, two alternating non-magnetic plates 5 of a rectangular shape and pole pieces 6 and coated with fire-resistant material.
  • a magnetic field sensor 7 is installed on the frame 1, which with a coil 2 through the connector 8 is connected to the control unit 9.
  • the frame 1 with the coil 2 and the sensor 7 is installed in the area of the welded joint 10 of the elements of the pipeline 11, where the electrode 12 is located, which is connected to the welding rectifier 13.
  • the device operates as follows.
  • the frame 1 with the coil 2 of the demagnetizing cable 3 is placed in an open magnetic circuit 4 and, when installed on the pipe to be welded, closes the magnetic circuit so that a predetermined magnetic flux passes in the pipe wall in the direction perpendicular to the welded joint 10.
  • Removable ferromagnetic pole pieces 6 allow the passage of magnetic flux through the welding joint, and removable non-magnetic plates 5 establish the necessary air gap 14 with the cylindrical surface of the pipe of any diameter.
  • the demagnetized pipe section becomes part of the magnetic circuit of the coil with an adjustable magnetic flux, both in magnitude and direction.
  • the coil current required in magnitude and direction is set, the field of which compensates for the residual magnetic induction in the area of the weld joint 14.
  • the magnitude and direction of the magnetic field in the area of the weld being welded such as Hall sensors 7, determine the current direction through coil 2 and created by coil 2, the field directed towards the field in the pipe with a minimum magnetic gap of the joint 10.
  • the change in the magnitude of the magnetic field in the welding zone due to different causes controlled sensor unit 7 and 9 automatically changes the current through the coil 2.
  • the device In operating mode, the device is magnetized by a compensating flow to the section to be welded and endowed with it is held on the pipe in any position, and in the off state it is easily moved to any section of the pipe.
  • a closed magnetic circuit allows you to demagnetize pipe sections with uneven ring magnetization. The principle of the localization of demagnetization requires minimal energy and labor.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)

Abstract

L'invention peut s'utiliser dans la démagnétisation de tuyaux, de jonctions de tuyaux, de canalisations d'extraction et principales de toutes catégories. Dans ce dispositif de démagnétisation locale d'éléments de canalisations, destiné à être monté dans la zone de soudure, qui comprend un câble de démagnétisation se présentant comme une bobine à spires multiples et alimenté par un courant continu fourni par un redresseur de soudage, une carcasse métallique sur laquelle on a monté des deux côtés de la soudure des capteurs d'intensité et de direction de champ magnétique, une unité de commande en communication à rétroaction avec ces capteurs d'intensité et de direction du champ magnétique, et connectée via des prises avec ceux-ci et avec la bobine à spires multiples. La carcasse métallique se présente comme un circuit de conducteur ferromagnétique ouvert, deux embouts d'extrémité en plaques non magnétiques, les embouts d'extrémité et les plaques non magnétiques ayant une forme rectangulaire à surface inférieure cylindrique dont le diamètre est égal au diamètre extérieur de la canalisation; ils sont disposés en alternance par rapport aux côtés du conducteur magnétique, la bobine à spires multiples étant disposée à l'intérieur du conducteur magnétique et la carcasse métallique étant couverte par un matériau ignifuge. L'invention permet de réduire l'investissement en termes de travail et la consommation d'énergie.
PCT/RU2008/000134 2007-05-23 2008-03-07 Dispositif de démagnétisation locale d'éléments de canalisations Ceased WO2008143546A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
RU2007119234/09A RU2331945C1 (ru) 2007-05-23 2007-05-23 Устройство локального размагничивания элементов трубопроводов
RU2007119234 2007-05-23

Publications (1)

Publication Number Publication Date
WO2008143546A1 true WO2008143546A1 (fr) 2008-11-27

Family

ID=39748139

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/RU2008/000134 Ceased WO2008143546A1 (fr) 2007-05-23 2008-03-07 Dispositif de démagnétisation locale d'éléments de canalisations

Country Status (2)

Country Link
RU (1) RU2331945C1 (fr)
WO (1) WO2008143546A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2974820A1 (fr) * 2014-07-17 2016-01-20 Ewm Ag Appareil de soudure à arcs électriques, système et procédé de démagnétisation d'un tube métallique
CN113338757A (zh) * 2021-05-17 2021-09-03 侯向芝 一种应急闭缝型阻烟阻燃防火门
CN115172003A (zh) * 2022-08-09 2022-10-11 福建联合石油化工有限公司 一种钢制压力管道的焊接消磁方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2404471C1 (ru) * 2009-11-18 2010-11-20 Закрытое акционерное общество "Газприборавтоматикасервис" Устройство локального размагничивания трубопроводов
RU2419905C1 (ru) * 2009-11-27 2011-05-27 Открытое акционерное общество "Акционерная Компания "Туламашзавод" Способ размагничивания тонкостенных кольцевых деталей большого диаметра из ферромагнитных сталей

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1099778A (fr) * 1977-08-31 1981-04-21 Kenneth W. Schroeder Traduction non-disponible
SU973166A1 (ru) * 1980-09-18 1982-11-15 Всесоюзный Научно-Исследовательский И Проектный Институт Вторичных Цветных Металлов Электромагнитный сепаратор
RU13271U1 (ru) * 1999-12-08 2000-03-27 Ивойлов Николай Григорьевич Устройство для компенсации магнитного поля трубопровода
RU2285254C1 (ru) * 2005-09-01 2006-10-10 ЗАО Диагностический научно-технический центр "Дефектоскопия" Устройство размагничивания магистральных трубопроводов

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1734126A1 (ru) * 1990-08-16 1992-05-15 Белорусский Политехнический Институт Устройство дл размагничивани ферромагнитных тел

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1099778A (fr) * 1977-08-31 1981-04-21 Kenneth W. Schroeder Traduction non-disponible
SU973166A1 (ru) * 1980-09-18 1982-11-15 Всесоюзный Научно-Исследовательский И Проектный Институт Вторичных Цветных Металлов Электромагнитный сепаратор
RU13271U1 (ru) * 1999-12-08 2000-03-27 Ивойлов Николай Григорьевич Устройство для компенсации магнитного поля трубопровода
RU2285254C1 (ru) * 2005-09-01 2006-10-10 ЗАО Диагностический научно-технический центр "Дефектоскопия" Устройство размагничивания магистральных трубопроводов

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2974820A1 (fr) * 2014-07-17 2016-01-20 Ewm Ag Appareil de soudure à arcs électriques, système et procédé de démagnétisation d'un tube métallique
EP2974820B1 (fr) 2014-07-17 2017-04-12 Ewm Ag Appareil de soudure à arcs électriques, système et procédé de démagnétisation d'un tube métallique
CN113338757A (zh) * 2021-05-17 2021-09-03 侯向芝 一种应急闭缝型阻烟阻燃防火门
CN113338757B (zh) * 2021-05-17 2022-08-05 安徽通晓防火门有限公司 一种应急闭缝型阻烟阻燃防火门
CN115172003A (zh) * 2022-08-09 2022-10-11 福建联合石油化工有限公司 一种钢制压力管道的焊接消磁方法

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Publication number Publication date
RU2331945C1 (ru) 2008-08-20

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