EP0933981B1 - Düse/Düsenhalterung für einen Plasmabrenner - Google Patents

Düse/Düsenhalterung für einen Plasmabrenner Download PDF

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Publication number
EP0933981B1
EP0933981B1 EP99400198A EP99400198A EP0933981B1 EP 0933981 B1 EP0933981 B1 EP 0933981B1 EP 99400198 A EP99400198 A EP 99400198A EP 99400198 A EP99400198 A EP 99400198A EP 0933981 B1 EP0933981 B1 EP 0933981B1
Authority
EP
European Patent Office
Prior art keywords
nozzle
plasma torch
male
plasma
nozzle holder
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.)
Expired - Lifetime
Application number
EP99400198A
Other languages
English (en)
French (fr)
Other versions
EP0933981A1 (de
Inventor
Gérard Marhic
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.)
Lincoln Electric Co France SA
Original Assignee
La Soudure Autogene Francaise
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 La Soudure Autogene Francaise filed Critical La Soudure Autogene Francaise
Publication of EP0933981A1 publication Critical patent/EP0933981A1/de
Application granted granted Critical
Publication of EP0933981B1 publication Critical patent/EP0933981B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
    • H05H1/00—Generating plasma; Handling plasma
    • H05H1/24—Generating plasma
    • H05H1/26—Plasma torches
    • H05H1/32—Plasma torches using an arc
    • H05H1/34—Details, e.g. electrodes, nozzles
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
    • H05H1/00—Generating plasma; Handling plasma
    • H05H1/24—Generating plasma
    • H05H1/26—Plasma torches
    • H05H1/32—Plasma torches using an arc
    • H05H1/34—Details, e.g. electrodes, nozzles
    • H05H1/3478—Geometrical details

Definitions

  • the present invention relates to a nozzle and an assembly nozzle / nozzle holder for plasma torch, single torch plasma provided with such a nozzle or such an assembly and with a machine and a method of plasma arc welding, cutting or marking likely to use such a torch or nozzle according to the invention.
  • plasma torches consist of a torch body with, in its rear part, connections to supply pipes in fluid, especially in plasma gas, and in current electric and, in its front part, means of mounting / fixing of the electrode body and the the torch.
  • the torch can be provided with means assembly / disassembly, as described in EP-A-599709.
  • document EP-A-872300 teaches a plasma torch whose removable torch head can be associated or dissociated from the fixed torch body thanks to a bayonet type fixing system. This document does not not specify how the nozzle is attached to the nozzle holder.
  • document US-A-5,308,949 describes a plasma torch comprising a nozzle having externally recesses of external diameters different and axial expansions serving bayonet joint to fix the nozzle in an insulating room comprising a coaxial plasma ejection port with the nozzle opening.
  • the nozzle is fixed to a support element called nozzle holder.
  • the aim of the present invention is therefore to alleviate the aforementioned problems by proposing a set nozzle / nozzle holder for plasma torch whose structure allows in particular to solve this problem of seizure, while improving the centering of the nozzle on the nozzle holder, and which is quick to assemble / disassemble.
  • the invention relates also a plasma torch, an automatic machine or any similar mechanized device comprising a nozzle and / or a male / female combination according to the invention.
  • the invention relates to a cutting, welding or arc marking process plasma capable of using a torch plasma according to the invention.
  • Figure 1 shows a sectional diagram longitudinal of part of a nozzle holder 2 according to the prior art, which comprises at its downstream end 22c, a thread 4.
  • Figure 2 shows, for its part, a nozzle 1 according to the prior art, which comprises an upstream part comprising on its external periphery a thread 3, intended to be screwed into the internal thread 4 of the nozzle holder 2 of Figure 1.
  • nozzle 1 and nozzle holder 2 structures are conventionally found in plasma torches of prior art.
  • Figures 3 to 11 show nozzles and nozzle holders in accordance with this invention.
  • Figure 3 shows the diagram a nozzle holder 2, in longitudinal section, capable of to constitute the female part of a set male / female for plasma torch according to the invention, which nozzle holder 2 comprises, on its periphery internal, near its downstream end 22c, one or several bosses 21, here three in number. These bosses 21 appear more clearly in FIG. 5, which represents a view from below, i.e. side downstream end 22c, of the nozzle holder 2 of FIG. 3.
  • FIG. 4 represents a side view of a nozzle 1 capable of constituting the male part of a male / female assembly for a plasma torch according to the invention. More precisely, it can be seen in this FIG. 4 that the nozzle 1 comprises an upstream part 11a having a diameter D1, an intermediate part 11b having a diameter D2 and a part 11c having, in the immediate vicinity of the intermediate part 11b, a diameter D3, said diameters D1, D2 and D3 being such that: D3>D1> D2.
  • the terminal end lld of the nozzle 1 is substantially conical; however, such a form is not limiting of the invention.
  • the nozzle 1 comprises on the outer periphery of the upstream part 11a, one or more several helical ramps 14, here three in number.
  • a axial recess 15 has been made over the entire length axial L of the upstream part 11a and was, in this case, extended over the entire length of the intermediate part 11b.
  • the number of recesses 15 is also three, as well as the confirms Figure 8 which is a top view of the nozzle 1 of figure 4.
  • FIG. 6 represents a diagram in longitudinal section of the nozzle 1 according to the invention, on which we see appear the structure of the nozzle 1 and, in particular, the outlet pipe or orifice 16 through which releases the plasma flow during operation of a plasma torch in a cutting operation plasma for example.
  • the profile of the upstream part 11a of the nozzle 1, comprising the recesses 15, corresponds substantially to the internal profile of the downstream end 22c of the nozzle holder 2, which downstream end 22c carries the bosses 21, as shown in FIG. 5.
  • Figure 7 shows schematically a nozzle 1 identical to that of FIG. 4, but angularly offset by one angle of about 60 °.
  • Figures 9 to 11 show a second mode of embodiment of the invention, in which the ramps helical 14 of the nozzle 1 carry a thread 18; the other parts of the nozzle 1 remain unchanged.
  • Figure 9 shows a view of side of a nozzle 1 with helical ramps 14 threaded 18
  • FIG. 10 represents the nozzle 1 of FIG. 9 according to an angularly offset view of approximately 60 °
  • the figure 11 shows a top view, that is to say on the part side upstream 11a, of the nozzle 1 of FIGS. 9 and 10.
  • the establishment, i.e. the mounting and fixing operation, of the nozzle 1 on the nozzle holder 2 is carried out by successively carrying out an insertion in translation of the nozzle 1 into the nozzle holder 2 by passing the bosses 21 of the nozzle holder 2 in the recesses 15 of the nozzle 1, then a fixing by rotation of the nozzle 1 in the nozzle holder 2, so that the bosses 21 come to cooperate with the helical ramps 14 for maintain said nozzle 1 in position in said nozzle holder 2.
  • the fixing by rotation is continued until the wall circular 11c 'of the downstream part 11c of the nozzle 1 come into support, that is to say in abutment, against the circular end 22c 'of the end 22c of the nozzle holder 2.
  • the nozzle / nozzle holder assembly for plasma torch according to the invention can be used in any operation welding, cutting or plasma marking requiring the use of a manual plasma torch or automatic capable of being fitted with such an assembly nozzle / nozzle holder or one of these elements taken isolation.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Geometry (AREA)
  • Plasma Technology (AREA)
  • Arc Welding In General (AREA)
  • Brushes (AREA)
  • Catching Or Destruction (AREA)

Claims (12)

  1. Düse für einen Plasmabrenner mit:
    zumindest einem einen Durchmesser D1 aufweisenden Oberteil (11a), zumindest einem einen Durchmesser D2 aufweisenden Mittelteil (11b) und zumindest einem in unmittelbarer Nähe zum Zwischenteil (11b) einen Durchmesser D3 aufweisenden Unterteil (11c), wobei der Mittelteil (11b) zwischen dem Oberteil (11a) und dem Unterteil (11c) liegt, wobei die Durchmesser D1, D2 und D3 derart sind, daß D3>D1>D2 gilt, und
    zumindest einer schraubenförmigen Rampe (14) auf dem äußeren Umfang des Oberteils (11a) und zumindest einer Aussparung (15), die zumindest der ganzen axialen Länge (L) der schraubenförmigen Rampe (14) folgt.
  2. Düse gemäß Anspruch 1, dadurch gekennzeichnet, daß sie mehrere schraubenförmige Rampen (14) trägt.
  3. Düse gemäß Anspruch 1 oder 2, dadurch gekennzeichnet, daß sie zumindest 3 schraubenförmige Rampen (14) trägt.
  4. Düse gemäß einem der Ansprüche 1 bis 3,
    dadurch gekennzeichnet, daß zwischen jeder schraubenförmigen Rampe (14) eine Aussparung (15) angebracht ist und/oder über zumindest einen Teil des Mittelteils (11b) der Düse (1) geführt wird.
  5. Düse gemäß Anspruch 1, dadurch gekennzeichnet, daß sie ein konisch geformtes Endstück (11d) aufweist.
  6. Düse gemäß Anspruch 1, dadurch gekennzeichnet, daß sie eine Auslaßöffnung (16) aufweist.
  7. Einheit mit männlichem/weiblichem Teil für einen Plasmabrenner mit:
    einer Düse (1) gemäß einem der Ansprüche 1 bis 6, die den männlichen Teil bildet, und
    einer Düsenhalterung (2), die den weiblichen Teil bildet und in der Lage ist, die Düse (1) aufzunehmen, und auf ihrer inneren Umfangsfläche und nahe ihres Unterteils (22c) zumindest einen Höcker (21) aufweist, der in der Lage ist mit zumindest einer schraubenförmigen Rampe (14) der Düse (1) zusammenzuwirken, so daß nach der Fixierung durch zumindest Drehen der Düse (1) in der Düsenhalterung (2) ein Verbleiben der Düse (1) in ihrer Position in der Düsenhalterung (2) mittels zumindest des Höckers (21) und zumindest der Rampe (14) sichergestellt werden kann.
  8. Einheit mit männlichem/weiblichem Teil gemäß Anspruch 7, dadurch gekennzeichnet, daß die Düsenhalterung (2) mehrere Höcker (21) aufweist, vorzugsweise zumindest 3 Höcker (21).
  9. Einheit mit männlichem/weiblichem Teil gemäß einem der Ansprüche 7 oder 8, dadurch gekennzeichnet, daß das innere Profil der Düsenhalterung (2) auf Höhe seines unteren Endes (22c) im wesentlichen dem äußeren Profil der Düse (1) auf Höhe ihres Oberteils (11a) entspricht.
  10. Plasmabrenner, dadurch gekennzeichnet, daß er mit einer Einheit mit männlichem/weiblichem Teil gemäß einem der Ansprüche 7 bis 9 oder einer Düse gemäß einem der Ansprüche 1 bis 6 ausgestattet ist.
  11. Automatische Maschine zum Schweißen, Schneiden oder Markieren mittels Plasmabogen, dadurch gekennzeichnet, daß sie mit einer Düse (1) gemäß einem der Ansprüche 1 bis 6 oder einem Plasmabrenner gemäß Anspruch 10 ausgestattet ist.
  12. Verfahren zum Schweißen, Schneiden oder Markieren mittels Plasmabogen, dadurch gekennzeichnet, daß ein Plasmabrenner gemäß Anspruch 10 oder eine automatische Maschine gemäß Anspruch 11 verwendet wird.
EP99400198A 1998-02-02 1999-01-28 Düse/Düsenhalterung für einen Plasmabrenner Expired - Lifetime EP0933981B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR9801146A FR2774548B1 (fr) 1998-02-02 1998-02-02 Ensemble tuyere/porte-tuyere pour torche a plasma
FR9801146 1998-02-02
US09/443,048 US6169264B1 (en) 1998-02-02 1999-11-18 Nozzle/nozzle carrier assembly for a plasma torch
CA002290146A CA2290146A1 (fr) 1998-02-02 1999-11-22 Ensemble tuyere/porte-tuyere pour torche a plasma

Publications (2)

Publication Number Publication Date
EP0933981A1 EP0933981A1 (de) 1999-08-04
EP0933981B1 true EP0933981B1 (de) 2001-10-17

Family

ID=27171088

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99400198A Expired - Lifetime EP0933981B1 (de) 1998-02-02 1999-01-28 Düse/Düsenhalterung für einen Plasmabrenner

Country Status (7)

Country Link
US (1) US6169264B1 (de)
EP (1) EP0933981B1 (de)
CA (1) CA2290146A1 (de)
DE (1) DE69900348T2 (de)
ES (1) ES2165224T3 (de)
FR (1) FR2774548B1 (de)
PT (1) PT933981E (de)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6974929B2 (en) * 2002-05-09 2005-12-13 Jeffrey Walters Electrodes and nozzles having improved connection and quick release
DE10261253B4 (de) * 2002-12-20 2005-02-24 Alcan Technology & Management Ag Düse für eine Vorrichtung zum Elektronenstrahlschweißen
US7392859B2 (en) * 2004-03-17 2008-07-01 Western Well Tool, Inc. Roller link toggle gripper and downhole tractor
DE102006038134B4 (de) * 2006-08-16 2009-08-20 Kjellberg Finsterwalde Plasma Und Maschinen Gmbh Plasmabrennerkopf, Plasmabrennerschaft und Plasmabrenner
DE102008018530B4 (de) * 2008-04-08 2010-04-29 Kjellberg Finsterwalde Plasma Und Maschinen Gmbh Düse für einen flüssigkeitsgekühlten Plasmabrenner, Anordnung aus derselben und einer Düsenkappe sowie flüssigkeitsgekühlter Plasmabrenner mit einer derartigen Anordnung
US9079265B2 (en) * 2008-08-22 2015-07-14 Kjellberg Finsterwalde Plasma Und Maschinen Gmbh Interconnection arrangement for a plasma torch wearing part and part holder
US8350181B2 (en) * 2009-08-24 2013-01-08 General Electric Company Gas distribution ring assembly for plasma spray system
USD669508S1 (en) 2011-04-19 2012-10-23 Kjellberg Stiftung, rechtsfahige Stiftung des burge rlichen Rechts Nozzle for torch
USD669509S1 (en) 2011-10-19 2012-10-23 Kjellberg Stiftung, rechtsfahige Stiftung des burge rlichen Rechts Nozzle for torch
US10737347B2 (en) 2013-09-19 2020-08-11 Hypertherm, Inc. Thread connection for a torch system
US10576575B2 (en) 2013-09-19 2020-03-03 Hypertherm, Inc. Thread connection for a torch system
US9642236B2 (en) 2013-09-19 2017-05-02 Hypertherm, Inc. Thread connection for a torch system
US11432393B2 (en) 2013-11-13 2022-08-30 Hypertherm, Inc. Cost effective cartridge for a plasma arc torch
US10456855B2 (en) 2013-11-13 2019-10-29 Hypertherm, Inc. Consumable cartridge for a plasma arc cutting system
US11278983B2 (en) 2013-11-13 2022-03-22 Hypertherm, Inc. Consumable cartridge for a plasma arc cutting system
US9981335B2 (en) 2013-11-13 2018-05-29 Hypertherm, Inc. Consumable cartridge for a plasma arc cutting system
US11684995B2 (en) 2013-11-13 2023-06-27 Hypertherm, Inc. Cost effective cartridge for a plasma arc torch
US9333476B2 (en) * 2014-07-16 2016-05-10 Amec Foster Wheeler North America Corp. Grid nozzle assembly, a fluidized bed reactor with a grid nozzle assembly and methods of using a grid nozzle assembly
AU2015301727B2 (en) 2014-08-12 2020-05-14 Hypertherm, Inc. Cost effective cartridge for a plasma arc torch
JP1527851S (de) * 2015-01-30 2015-06-29
JP1527635S (de) * 2015-01-30 2015-06-29
USD775249S1 (en) * 2015-04-01 2016-12-27 Koike Sanso Kogyo Co., Ltd. Inner nozzle for plasma torch
KR102586885B1 (ko) 2015-08-04 2023-10-06 하이퍼썸, 인크. 액체-냉각식 플라즈마 아크 토치용 카트리지
US10413991B2 (en) 2015-12-29 2019-09-17 Hypertherm, Inc. Supplying pressurized gas to plasma arc torch consumables and related systems and methods

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US5308949A (en) * 1992-10-27 1994-05-03 Centricut, Inc. Nozzle assembly for plasma arc cutting torch
WO1996023620A1 (fr) * 1995-01-31 1996-08-08 Komatsu Ltd. Chalumeau d'usinage

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US4059743A (en) * 1974-10-28 1977-11-22 Eduard Migranovich Esibian Plasma arc cutting torch
FR2562748B1 (fr) * 1984-04-04 1989-06-02 Soudure Autogene Francaise Torche de soudage ou coupage a plasma
US4649257A (en) * 1986-05-06 1987-03-10 The Perkin-Elmer Corporation Gas distribution ring for plasma gun
FR2600978B1 (fr) * 1986-05-12 1990-06-08 Astra Plastique Bouchon distributeur a capuchon tournant pour produits pateux
US4891489A (en) * 1988-11-03 1990-01-02 Allegheny Ludlum Corporation Shield cup protector apparatus for plasma arc torch
US5203994A (en) * 1991-08-16 1993-04-20 Stanadyne Automotive Corp. Fuel filter retention system

Patent Citations (3)

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Publication number Priority date Publication date Assignee Title
US5308949A (en) * 1992-10-27 1994-05-03 Centricut, Inc. Nozzle assembly for plasma arc cutting torch
WO1996023620A1 (fr) * 1995-01-31 1996-08-08 Komatsu Ltd. Chalumeau d'usinage
EP0872300A1 (de) * 1995-01-31 1998-10-21 Komatsu Ltd. Bearbeitungsschweissbrenner

Also Published As

Publication number Publication date
FR2774548A1 (fr) 1999-08-06
DE69900348D1 (de) 2001-11-22
PT933981E (pt) 2002-02-28
EP0933981A1 (de) 1999-08-04
CA2290146A1 (fr) 2001-05-22
ES2165224T3 (es) 2002-03-01
FR2774548B1 (fr) 2000-03-03
US6169264B1 (en) 2001-01-02
DE69900348T2 (de) 2002-09-05

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