EP3297398B1 - Dispositif de traitement thermique d'objets, en particulier de tuyaux et de contenants en métal - Google Patents

Dispositif de traitement thermique d'objets, en particulier de tuyaux et de contenants en métal Download PDF

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Publication number
EP3297398B1
EP3297398B1 EP17190571.4A EP17190571A EP3297398B1 EP 3297398 B1 EP3297398 B1 EP 3297398B1 EP 17190571 A EP17190571 A EP 17190571A EP 3297398 B1 EP3297398 B1 EP 3297398B1
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EP
European Patent Office
Prior art keywords
chain
chain links
rollers
links
inductor
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.)
Active
Application number
EP17190571.4A
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German (de)
English (en)
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EP3297398A3 (fr
EP3297398A2 (fr
Inventor
Frank Kauer
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.)
Thermoprozess Induktionswaerme GmbH
Original Assignee
Thermoprozess Induktionswaerme GmbH
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Publication of EP3297398A3 publication Critical patent/EP3297398A3/fr
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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
    • H05B6/101—Induction heating apparatus, other than furnaces, for specific applications for local heating of metal pieces
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/36—Coil arrangements
    • H05B6/44—Coil arrangements having more than one coil or coil segment

Definitions

  • the present invention relates to a device for the heat treatment of objects, in particular pipes and containers made of metal.
  • Generic devices are known in many different ways and are used for preheating objects that have to be welded together, for example.
  • the objects are heated accordingly on both sides of the intended weld.
  • the desired temperature distribution must be generated by appropriate geometric design of the inductor.
  • the inductor With stationary heating, there is no relative movement between the welded parts and the inductor.
  • the inductor is usually designed to be flexible.
  • the inductor can be a cable, for example made of copper braid, self-cooling or water-cooled.
  • the inductor and the welded part are arranged at the smallest possible distance from each other, since the inductor efficiency decreases sharply with increasing distance and the electromagnetic stray field, which is dangerous to people, rises sharply.
  • a device for warming up objects which also consists of a plurality of rigid segments which can be pivoted relative to one another.
  • the segments also have a defined inner radius which is adapted to the inner radius of the object or pipe to be heated.
  • the individual segments can be spread or pulled together using belts or chain drives. In the spread state, the device can be placed on a pipe, after which the individual segments are then placed around the pipe using the belt.
  • the inductors are arranged in the segments.
  • This device also has the disadvantage that only Objects or pipes with a defined outer diameter can be warmed up.
  • a device and method for heat treatment of steel tubes is also known, in which the area of heat treatment is encompassed by a semicircular heating device, the tube being rotatable about its axial axis under the device.
  • This device also has the disadvantage that only pipes of a very specific diameter can be processed.
  • WO 2007/128384 A2 a hand-held device for welding plastic pipes is known, which has a chain that can be placed around a special pipe connector and is closed with a plug at the upper end of the hand-held device.
  • the pipe connector which is made of plastic like the pipes to be connected, has a metal ring which lies between the inside diameter of the pipe connector and the outside diameter of an inserted pipe.
  • the object of the present invention is therefore to provide a device for the heat treatment of objects which can be used for objects with a wide variety of external radii of curvature.
  • a device which is formed by a chain composed of chain links, the chain links being connected to one another in a rotatable or pivotable manner, and in that at least one electrical conductor in the form of an inductor is arranged in or on the chain.
  • At least one coolant in particular in the form of a cooling hose, can be arranged in or on the chain.
  • the chain according to the invention is constructed in principle like a known energy chain. It can have a rectangular cross section, in the interior of which the electrical cables or conductors are located. So the chain can Have start and an end piece, which are connected by many identical chain links. It is also possible that the chain links can be opened externally or internally so that conductors can also be inserted or removed from the chain, even if the individual chain links are connected to one another.
  • the chain links can have longitudinal webs that separate the individual conductors from one another. It also makes sense if the conductors are clamped at the beginning and end of the chain with strain relief.
  • the chain links are advantageously opened on their side facing the object in such a way that the thermal resistance between the electrical conductor and the object is as small as possible.
  • the chain has rollers which serve, as it were, for rolling and / or for contacting the object to be heated, the pivot axis of the chain links pivotally connected to one another at the same time can form the axis of rotation for the rollers. At least one roller can be arranged on each, every second or third chain link.
  • the rollers can allow the object to roll in the longitudinal direction of the chain and / or transversely thereto. So it is possible to store ball bearings or the bearings of the rollers themselves so that they can be pivoted.
  • the length of a chain link is as short as possible than the eighth part of the circumference of the object to be treated.
  • the chain links have straight side parts, such that the chain can also lie flat on a flat surface.
  • the side parts it is also possible for the side parts to have a, in particular slight, curvature on their side facing the object.
  • the chain does not heat itself, it is made of an electrically non-conductive and non-ferromagnetic material.
  • That the chain rests securely on the outer wall of the object during the entire heat treatment can be achieved by at least one traction means encompassing the object, which presses the chain against the outer wall of the object.
  • the traction means is advantageously tensioned, and the necessary tension can be ensured by appropriate spring elements.
  • the at least one traction means can rest on the outside of the chain or by at least one chain link, e.g. be guided through one or more eyelets formed or attached to the chain links.
  • the invention also provides that two or more chains are put together to form a long chain.
  • the ends of the chains can be attached to each other for this purpose. It is also possible that another chain is arranged parallel to a chain.
  • the chains arranged parallel to one another can also be connected to one another if the chains and connecting elements are designed accordingly.
  • the Figure 1 shows a cross-sectional view through a pipe R with two chains K1 and K2 according to the invention arranged around it.
  • the chains K1 and K2 are each formed by interconnected chain links 1, the chains K1 and K2 having rollers 1a with which they rest on the outer wall of the tube R. Not shown are traction means or tensioning means with which the chains K1 and K2 are pressed against the outer tube wall.
  • the rollers 1 define the distance AB of the inductors arranged in the chain links 1.
  • the Figure 2 shows a side view of a container B, on which two chains K1 and K2 according to the invention are arranged for warming up the area of a weld seam SN to be made.
  • the chains K1 and K2 can be pressed against the outer wall of the container B by a chain holder (not shown).
  • the chain holder can be designed such that it slowly moves the chains K1 and K2 to the left of the weld seam SN.
  • wires to be stretched around the container, with which the chains are fixed in their illustrated position.
  • the inductor IN is a surface inductor that covers the entire surface of the container B, which are covered by the chains K1 and K2, can be heated.
  • the Figure 3 shows a plan view of a chain according to the invention which has just been laid and which is formed from a plurality of chain segments 1.
  • the chain segments have transverse webs 1B which connect the side parts 1c of the chain links 1 to one another.
  • the Figure 4 shows a top view of the chain according to Figure 3 with inductor IN arranged therein.
  • the inductor IN has several turns, its connections INa being led out of the chain end K1a.
  • the Figure 5 shows a chain according to the invention with rollers 1a, which allow movement of the chain on an object transverse to the longitudinal direction LR of the chain. It is also possible for the rollers 1a to be pivotally mounted on the chain links 1 about the axes 1a ', so that the chain can in principle be moved in any direction over the surface of the object.
  • the Figure 6 shows two chains K1 and K2 connected to one another at the end by means of the connecting parts V.
  • the Figure 7 shows a chain according to Figure 3 with an inductor arranged therein, which at the same time enables cooling of the object.
  • the Figure 8 shows a chain according to Figure 5 with an inductor which can also be heated and cooled in a controlled manner, the rollers 1a being pivotally mounted about the axis 1a 'or being rigidly attached to the chain links in the position shown, so that the chain can be rolled across the object transversely to its longitudinal direction.
  • the Figure 9 shows a cross-sectional view through a pipe R with chains K1 and K2 placed around it according to a further possible embodiment. These chains also consist of interconnected chain links 1 with rollers 1a arranged thereon. This inductor IN also has additional cooling K. The two chains can be connected to one another via their end links.
  • the water-cooled inductors can e.g. B. be a surface inductor (above) and a comprehensive inductor.
  • the Figure 9a shows a schematic cross-sectional view through the surface Go of an object G with a chain arranged thereon.
  • the inductors IN are arranged in the longitudinal direction LR (perpendicular to the plane of the drawing) within the chain links 1. Laterally, the rollers 1a are rotatably mounted on the chain links 1 and keep the inductors IN at a certain distance AB from the object surface Go.
  • the Figure 10 shows a device according to the invention with supports L1, L2 for a tube R.
  • a chain K1 according to the invention is placed on the tube R, which chain is held in position by means of the tensioning means S.
  • the tensioning means S is fastened at 9 to the device floor or hall floor, spring elements F being arranged in the tensioning means, which hold the tensioning means S under tension, whereby the chain K1 is pressed firmly against the outer tube wall.
  • the tube can be rotated around its longitudinal axis, so that a continuous weld seam can be produced.
  • the tube R can also be moved in the axial direction (perpendicular to the plane of the drawing), provided the bearings L1 and L2 are designed accordingly, whereby an axially extending weld seam can also be made with this device.
  • the Figure 11 points to the device according to Figure 10 alternative embodiment in which the chain is wrapped around more than 80% of the circumference of the tube R. This is possible because the clamping device S encloses the tube by more than 360 °.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Heat Treatment Of Articles (AREA)

Claims (18)

  1. Dispositif de traitement thermique d'objets (G), notamment de tuyaux (R) et de contenants (B) en métal, le dispositif comportant une chaîne (K1, K2) constituée de maillons de chaîne (1), les maillons de chaîne (1) étant reliés l'un à l'autre de manière mobile en rotation et de façon à pivoter, et le dispositif comportant au moins un conducteur électrique (IN) qui est agencé dans ou sur la chaîne (K1, K2), caractérisé en ce que la chaîne (K1, K2) présente des galets de roulement (1a) qui servent à dérouler et/ou à être en appui sur l'objet (G) à réchauffer.
  2. Dispositif selon la revendication 1, caractérisé en ce qu'au moins un moyen de refroidissement (K), notamment sous forme d'un flexible pour réfrigérant (K), est agencé dans ou sur la chaîne (K1, K2).
  3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que les maillons de chaîne (1) présentent respectivement deux parties latérales (1c) qui sont reliées l'une à l'autre par l'intermédiaire d'au moins une barre de liaison ou d'au moins une paroi de liaison (1b).
  4. Dispositif selon la revendication 1 ou 2, caractérisé en ce que les maillons de chaîne (1) présentent respectivement deux parties latérales (1c) qui sont reliées l'une à l'autre par l'intermédiaire d'au moins deux barres de liaison et en ce que les barres (1b) forment avec les deux parties latérales (1c) une ouverture de passage (12) en forme de fenêtre, notamment rectangulaire, dans laquelle le conducteur électrique (IN) et/ou le moyen de refroidissement (K) s'engagent.
  5. Dispositif selon l'une des revendications 1 à 4, caractérisé en ce que les maillons de chaîne (1) sont ouverts sur leur côté (1g) tourné vers l'objet (G) de sorte que la résistance électromagnétique entre le conducteur électrique (IN) et l'objet est aussi faible que possible.
  6. Dispositif selon l'une des revendications précédentes, caractérisé en ce que l'axe de pivotement (A1) des maillons de chaîne (1), reliés l'un à l'autre de façon à pouvoir pivoter, forme, ou est en même temps, l'axe de rotation pour les galets de roulement (1a).
  7. Dispositif selon l'une des revendications précédentes, caractérisé en ce qu'au moins un galet de roulement (1a) est agencé sur chaque maillon de chaîne (1) ou sur chaque deuxième ou troisième maillon de chaîne (1).
  8. Dispositif selon l'une des revendications précédentes, caractérisé en ce que les galets de roulement (1a) permettent un déroulage sur l'objet (G) dans la direction d'extension longitudinale (LR) de la chaîne (K1, K2) et/ou transversalement par rapport à celle-ci.
  9. Dispositif selon l'une des revendications précédentes, caractérisé en ce que les galets de roulement (1a) sont logés de manière à pouvoir tourner dans une première partie de palier (1r), la partie de palier (1r) étant logée elle-même de manière mobile en rotation et de façon à pivoter sur le maillon de chaîne (1).
  10. Dispositif selon l'une des revendications précédentes, caractérisé en ce que la longueur (1n) d'un maillon de chaîne (1) est plus courte que la huitième partie de la périphérie (U) de l'objet (G) à traiter.
  11. Dispositif selon l'une des revendications précédentes, caractérisé en ce que les maillons de chaîne (1) présentent justement des parties latérales (1c) de sorte que la chaîne (K1, K2) peut reposer de manière plane sur une surface plane.
  12. Dispositif selon la revendication 3, caractérisé en ce que les parties latérales (1c) présentent sur leur côté tourné vers l'objet (G) une courbure (KR), notamment légère.
  13. Dispositif selon l'une des revendications précédentes, caractérisé en ce que les maillons de chaîne (1) s'engrènent.
  14. Dispositif selon l'une des revendications précédentes, caractérisé en ce que les maillons de chaîne (1) sont en un matériau électrique, non conducteur et non ferromagnétique.
  15. Dispositif selon l'une des revendications précédentes, caractérisé en ce que le dispositif peut être pressé contre la paroi extérieure (Go) de l'objet (G) par l'intermédiaire d'au moins un moyen de traction (S) tendu et contournant l'objet (G).
  16. Dispositif selon la revendication 15, caractérisé en ce que le moyen de traction est reposé à l'extérieur de la chaîne (K1, K2) ou est guidé par l'intermédiaire d'au moins un maillon de chaîne (1).
  17. Dispositif selon l'une des revendications précédentes, caractérisé en ce que plusieurs chaînes (K1, K2) peuvent être fixées l'une à l'autre avec leurs extrémités (K1a, K2a).
  18. Dispositif selon l'une des revendications précédentes, caractérisé en ce qu'au moins un inducteur ou un conducteur électrique s'étend sur plus d'une chaîne (K1, K2) ou est logé sur celles-ci.
EP17190571.4A 2016-09-16 2017-09-12 Dispositif de traitement thermique d'objets, en particulier de tuyaux et de contenants en métal Active EP3297398B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102016117452.1A DE102016117452A1 (de) 2016-09-16 2016-09-16 Vorrichtung zur Wärmebehandlung von Gegenständen, insbesondere von Rohren und Behältnissen aus Metall

Publications (3)

Publication Number Publication Date
EP3297398A2 EP3297398A2 (fr) 2018-03-21
EP3297398A3 EP3297398A3 (fr) 2018-04-04
EP3297398B1 true EP3297398B1 (fr) 2020-07-08

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Application Number Title Priority Date Filing Date
EP17190571.4A Active EP3297398B1 (fr) 2016-09-16 2017-09-12 Dispositif de traitement thermique d'objets, en particulier de tuyaux et de contenants en métal

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EP (1) EP3297398B1 (fr)
DE (1) DE102016117452A1 (fr)

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4388510A (en) 1981-06-12 1983-06-14 Commercial Resins Company Heating collar with quadrafilar windings
US4582972A (en) 1984-08-22 1986-04-15 General Motors Corporation Chain feed mechanism for an induction heating furnace
US4595607A (en) 1985-08-05 1986-06-17 Resource Engineering And Manufacturing Corp. Combined induction heating and coating system for pipe weld joints
US5186755A (en) * 1990-05-29 1993-02-16 Commercial Resins Company Girth weld heating and coating system
US5071672A (en) * 1990-05-29 1991-12-10 Commercial Resins Company Girth weld heating and coating method
DE10137776C1 (de) 2001-08-02 2003-04-17 Fraunhofer Ges Forschung Verfahren zur Erzeugung von verschleissbeständigen Randschichten
CN101484297A (zh) * 2006-05-05 2009-07-15 阿尔欧伊斯格鲁伯有限公司 由热塑性材料制成的管的连接方法和装置
JP2011168829A (ja) 2010-02-18 2011-09-01 Yoshino Kosakusho:Kk 高周波誘導加熱装置
BR112013020477B1 (pt) 2011-02-17 2021-05-18 Lavalley Industries, Llc fixação com garras de posição ajustável
WO2013067631A1 (fr) * 2011-11-10 2013-05-16 Shawcor Ltd. Appareil contenant de multiples zones chauffantes à infrarouges utilisés en séquence pour articles tubulaires
AU2015231503B2 (en) 2014-03-17 2018-01-04 Mcelroy Manufacturing, Inc. Socket fusion jig

Non-Patent Citations (1)

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Title
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Also Published As

Publication number Publication date
EP3297398A3 (fr) 2018-04-04
DE102016117452A1 (de) 2018-03-22
EP3297398A2 (fr) 2018-03-21

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