DE202005002259U1 - Device for sealing protective gases for molding chambers in pipes to be welded comprises two or more seals inserted into the tubular sections to be sealed and connected to each other on the protective gas inlet and outlet - Google Patents

Device for sealing protective gases for molding chambers in pipes to be welded comprises two or more seals inserted into the tubular sections to be sealed and connected to each other on the protective gas inlet and outlet Download PDF

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Publication number
DE202005002259U1
DE202005002259U1 DE200520002259 DE202005002259U DE202005002259U1 DE 202005002259 U1 DE202005002259 U1 DE 202005002259U1 DE 200520002259 DE200520002259 DE 200520002259 DE 202005002259 U DE202005002259 U DE 202005002259U DE 202005002259 U1 DE202005002259 U1 DE 202005002259U1
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Germany
Prior art keywords
protective gas
sealing
gas inlet
pipes
sealed
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Expired - Lifetime
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DE200520002259
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German (de)
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Individual
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Priority to DE200520002259 priority Critical patent/DE202005002259U1/en
Publication of DE202005002259U1 publication Critical patent/DE202005002259U1/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00Arc welding or cutting
    • B23K9/32Accessories
    • B23K9/325Devices for supplying or evacuating shielding gas

Abstract

Device for sealing protective gases for molding chambers in pipes to be welded comprises two or more seals (1) inserted into the tubular sections to be sealed and connected to each other on the protective gas inlet and outlet using a detachable securing device.

Description

Die Erfindung betrifft eine Vorrichtung zum Abdichten von Schutzgasen für Formierkammern in zu verschweißenden Rohren. Zur Bildung eines gasdichten Raumes werden zwei oder mehr mit axialem Abstand zueinander angeordneten Dichtscheiben (1) in den zu verschweißenden Rohrabschnitt eingeführt, wobei an der Eingangsseite ein Gaseintrittskörper (2) bzw. an der Ausgangsseite ein Gasaustrittskörper vorgesehen ist. Schutzgaseintritts- und Schutzgasaustrittsseite sind mittels starrer oder flexibler Verbindungen miteinander verschraubt. Das von der Eintrittsseite zugeführte Schutzgas wird innerhalb der Formierkammer über einen feinporigen Körper verteilt, wobei sich der in der Kammer befindliche Luftsauerstoff durch den Gasaustritt verdrängt und somit eine reine Schutzgasatmosphäre erreicht wird.The invention relates to a device for sealing protective gases for Formierkammern in pipes to be welded. To form a gas-tight space, two or more axially spaced sealing disks ( 1 ) introduced into the pipe section to be welded, wherein on the input side, a gas inlet body ( 2 ) or on the output side, a gas outlet body is provided. Inert gas inlet and protective gas outlet side are bolted together by means of rigid or flexible connections. The protective gas supplied from the inlet side is distributed within the forming chamber via a fine-pored body, wherein the atmospheric oxygen in the chamber is displaced by the gas outlet and thus a pure protective gas atmosphere is achieved.

Derartige Vorrichtungen werden sowohl für Hand- als auch für Automatenschweißungen zur Herstellung von hochwertigen Schweißverbindungen aus ferritischen und austenitischen Stählen eingesetzt, um die Korrosionsanfälligkeit der Schweißnaht in einem begrenzten Rohrabschnitt durch Zuführung eines Schutzgases zu verhindern.such Devices are used both for manual as well as for Automatenschweißungen for the production of high-quality welded joints of ferritic and austenitic steels used to reduce the susceptibility to corrosion the weld in a limited pipe section by supplying a protective gas prevent.

Bei den bekannten Vorrichtungen der eingangs beschriebenen Gattung ( DE 3728184 C2 ; G8807145. b; DE 19651869 C1 ) sind die Dichtscheiben an ihrem Umfang mit zwei nicht voneinander trennbaren Dichtlippen ausgestattet. Beim Schweißvorgang entstehen sehr hohe Temperaturen, die sich im Schweißnahtbereich fortsetzen und so die nächstgelegene Dichtlippe meist spröde werden lässt, wogegen die äußere Dichtlippe meist unbeschädigt bleibt. Um die vollständige Gasabdichtung einer neuen Schweißnaht in einem zu verschweißenden Rohrabschnitt weiter zu gewährleisten, müssen diese Dichtlippen ersetzt werden. Aufgabe der Erfindung ist es, die Vorrichtung der eingangs beschriebenen Gattung so zu verbessern, dass ausschließlich der Ersatz der zerstörten Dichtung nötig wird. Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass die Dichtscheiben aus zwei lösbaren Hälften bestehen und somit einzeln ausgetauscht werden können.In the known devices of the type described above (US Pat. DE 3728184 C2 ; G8807145. b; DE 19651869 C1 ), the sealing disks are equipped at their periphery with two non-separable sealing lips. The welding process produces very high temperatures, which continue in the weld seam area and thus make the nearest sealing lip mostly brittle, whereas the outer sealing lip usually remains undamaged. In order to further ensure the complete gas sealing of a new weld in a pipe section to be welded, these sealing lips must be replaced. The object of the invention is to improve the device of the type described above so that only the replacement of the destroyed seal is necessary. This object is achieved in that the sealing discs consist of two detachable halves and thus can be replaced individually.

Die Erfindung wird nachfolgend anhand eines in der Zeichnung dargestellten Ausführungsbeispiels näher erläutert. Es zeigtThe Invention will now be described with reference to a drawing embodiment explained in more detail. It shows

1) schematisch, teilweise geschnittene, Darstellung der Vorrichtung zum Abdichten von Schutzgasen für Formierkammern in zu verschweißenden Rohren. 1 ) schematically, partially in section, showing the device for sealing protective gases for Formierkammern in pipes to be welded.

2) dargestellt sind zwei einzelne Dichtlippen (1) mit Metallscheiben (4), einem Schutzgaseintrittskörper (2) und einem Sicherungselement (3). 2 ) are shown two single sealing lips ( 1 ) with metal discs ( 4 ), a protective gas inlet body ( 2 ) and a fuse element ( 3 ).

Claims (4)

Vorrichtung zum Abdichten von Schutzgasen für Formierkammern in zu verschweißenden Rohren mit zwei oder mehr in den abzudichtenden Rohrabschnitt einführbaren, teilweise nachgiebigen Dichtungen, die in ihrer Ausbildung jeweils zwei Dichtscheiben auf einem Schutzgaseintritt bzw. Schutzgasaustritt mittels einer lösbaren Sicherung (3) kraftschlüssig miteinander verbunden sind und mit ihrem äußeren Umfang gegen eine Rohr-bzw. Behälterinnenwandung abdichten.Device for sealing shielding gases for forming chambers in pipes to be welded with two or more insertable in the pipe section to be sealed, partially resilient seals that form two sealing washers in each case on a protective gas inlet or protective gas outlet by means of a releasable fuse ( 3 ) are positively connected with each other and with its outer circumference against a pipe or. Seal container inner wall. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Dichtungen (1) aus einem hoch hitzebeständigen elastischem Material, das auf eine Shore-Härte von 30° bis 70° eingestellt ist, bestehen.Device according to claim 1, characterized in that the seals ( 1 ) made of a highly heat-resistant elastic material, which is set to a Shore hardness of 30 ° to 70 ° exist. Vorrichtung nach Anspruch 1 – 2, dadurch gekennzeichnet, dass die Dichtungen (1) eine zentrische Bohrung zur Aufnahme eines Schutzgaseintritts (2)- bzw. Schutzgasaustritts aufweisen.Apparatus according to claim 1 - 2, characterized in that the seals ( 1 ) a central bore for receiving a protective gas inlet ( 2 ) - or protective gas outlet have. Vorrichtung nach Anspruch 1 – 3, dadurch gekennzeichnet, dass jede Dichtungshälfte mit einer eingelegten Stützscheibe (4) aus Metall, vorzugsweise VA, zur Verbesserung der Stabilität versehen ist.Apparatus according to claim 1-3, characterized in that each sealing half with an inserted support disk ( 4 ) made of metal, preferably VA, for improving the stability.
DE200520002259 2005-02-12 2005-02-12 Device for sealing protective gases for molding chambers in pipes to be welded comprises two or more seals inserted into the tubular sections to be sealed and connected to each other on the protective gas inlet and outlet Expired - Lifetime DE202005002259U1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE200520002259 DE202005002259U1 (en) 2005-02-12 2005-02-12 Device for sealing protective gases for molding chambers in pipes to be welded comprises two or more seals inserted into the tubular sections to be sealed and connected to each other on the protective gas inlet and outlet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200520002259 DE202005002259U1 (en) 2005-02-12 2005-02-12 Device for sealing protective gases for molding chambers in pipes to be welded comprises two or more seals inserted into the tubular sections to be sealed and connected to each other on the protective gas inlet and outlet

Publications (1)

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DE202005002259U1 true DE202005002259U1 (en) 2005-05-04

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DE200520002259 Expired - Lifetime DE202005002259U1 (en) 2005-02-12 2005-02-12 Device for sealing protective gases for molding chambers in pipes to be welded comprises two or more seals inserted into the tubular sections to be sealed and connected to each other on the protective gas inlet and outlet

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202009017975U1 (en) 2009-12-21 2010-11-04 ALGÜN, Osman Sealing device for forming a protective gas chamber
DE202010015678U1 (en) 2010-11-19 2011-04-21 Schüller, Oliver Forming device for pipe sections to be welded together
WO2011085876A1 (en) 2009-12-21 2011-07-21 Alguen Osman Sealing device for forming a protective gas chamber

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202009017975U1 (en) 2009-12-21 2010-11-04 ALGÜN, Osman Sealing device for forming a protective gas chamber
WO2011085876A1 (en) 2009-12-21 2011-07-21 Alguen Osman Sealing device for forming a protective gas chamber
DE202010015678U1 (en) 2010-11-19 2011-04-21 Schüller, Oliver Forming device for pipe sections to be welded together

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R207 Utility model specification

Effective date: 20050609

R156 Lapse of ip right after 3 years

Effective date: 20080902