EP0550051A2 - Chalumeau à découper d'une machine d'oxycoupage pourvu d'un dispositif d'allumage interne - Google Patents

Chalumeau à découper d'une machine d'oxycoupage pourvu d'un dispositif d'allumage interne Download PDF

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Publication number
EP0550051A2
EP0550051A2 EP92122076A EP92122076A EP0550051A2 EP 0550051 A2 EP0550051 A2 EP 0550051A2 EP 92122076 A EP92122076 A EP 92122076A EP 92122076 A EP92122076 A EP 92122076A EP 0550051 A2 EP0550051 A2 EP 0550051A2
Authority
EP
European Patent Office
Prior art keywords
heating oxygen
fuel gas
heating
cutting torch
oxygen
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.)
Granted
Application number
EP92122076A
Other languages
German (de)
English (en)
Other versions
EP0550051A3 (en
EP0550051B1 (fr
Inventor
Werner Dipl.-Ing. Görde
Manfred Dipl.-Ing. Greifzu
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.)
GCE GmbH
Original Assignee
GCE Rhoena Autogengeraete GmbH
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 GCE Rhoena Autogengeraete GmbH filed Critical GCE Rhoena Autogengeraete GmbH
Priority to CA002096405A priority Critical patent/CA2096405A1/fr
Priority to US08/083,462 priority patent/US5393223A/en
Publication of EP0550051A2 publication Critical patent/EP0550051A2/fr
Publication of EP0550051A3 publication Critical patent/EP0550051A3/de
Application granted granted Critical
Publication of EP0550051B1 publication Critical patent/EP0550051B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/38—Torches, e.g. for brazing or heating
    • F23D14/42—Torches, e.g. for brazing or heating for cutting

Definitions

  • the invention relates to a machine cutting torch with an internal ignition device according to the preamble of claim 1 and 2 respectively.
  • feeds i.e. Lines are provided on threaded connections for fuel gas and / or heating oxygen, which are connected to a fuel gas and oxygen supply source.
  • the known cutting torch also has a separate threaded connection which leads to a fuel gas / oxygen mixture feed opening into the cutting oxygen channel.
  • the fuel gas / oxygen mixture represents the ignition gas.
  • An electrical ignition device is arranged on the cutting oxygen channel downstream of the junction of the fuel gas / oxygen mixture feed.
  • the fuel gas-oxygen mixture is generated outside the burner body in a mixing point, which is designed as an injector.
  • the injector is part of a pilot gas quantity control device that is directly connected to supply sources for fuel gas and heating oxygen. This should enable the ignition point to be supplied with an ignition gas quantity which is independent of the setting of the heating gases of the cutting torch and which cannot be influenced (DE-OS 35 27 955).
  • the above-mentioned pilot gas quantity control device in each case contains a solenoid valve and a pressure regulator in branch lines to the injector which carry heating oxygen and fuel gas.
  • the pressure regulator is connected to a heating oxygen supply source or to a fuel gas supply source via a connection T-piece.
  • a cutting oxygen line which is connected to the cutting oxygen supply source via a regulating and / or control device, is also attached to the cutting torch via a threaded connection.
  • the supply of the fuel gas-oxygen mixture as Ignition gas thus takes place parallel to the supply of the fuel gas, the heating oxygen and the cutting oxygen to the cutting torch.
  • a separate line for the ignition gas is provided, which in practice is designed as a hose.
  • Such hoses are indeed suitable for the supply of pilot gas or fuel gas, but an accident risk cannot be ruled out if the pilot gas or fuel gas mixture is fed to the cutting torch over the usual long distances. Furthermore, the expenditure on equipment for the pilot gas quantity control device is considerable.
  • the pilot gas in which the pilot gas is also formed and which essentially comprises the mixer for mixing the pilot fuel gas and the pilot oxygen to the pilot gas mixture, pressure regulators for the pilot oxygen and pilot gas, solenoid valves for switching the pilot fuel gas on and off and of the ignition oxygen, which is arranged parallel to the fuel gas and heating oxygen supply and cutting oxygen supply to the cutting torch, occurs because of the larger amount and / or the higher pressure of the latter fuel gas and heating oxygen supply, the problem that this in a small amount or less Pressure-flowing ignition gas mixture reaches the cutting nozzle relatively late.
  • the known control or regulating device for ignition gases is designed such that the ignition gas mixture flows to the cutting torch with a larger quantity and / or greater pressure than the required quantity or pressure only by a control or regulating element arranged in the vicinity of the cutting torch or in the cutting torch to the required Quantity or the required pressure is set.
  • the control or regulating element can be designed as a fine metering valve. It can also be implemented as an orifice with a metering hole.
  • a fine metering valve for optimizing the amount of fuel gas can be arranged on the input side in front of the mixer in the fuel gas line, at least one solenoid valve being arranged on the input side in front of the fine metering valve.
  • the fine metering valve can be assigned adjusting devices which can be adjusted by a control unit as a function of a predetermined mixing ratio or a predetermined amount of the pilot gas mixture.
  • this does not solve the basic disadvantages of supplying the pilot gas mixture to the cutting torch in parallel with the fuel gas and heating oxygen and cutting oxygen.
  • the present invention is based on the object of designing a machine cutting torch with an internal ignition device of the type mentioned at the outset in such a way that the outlay in terms of equipment for the overall arrangement of the flame cutting machine is reduced and operational reliability is increased.
  • the machine cutting torch thus has only connection pieces for the fuel gas, for the heating oxygen and for the cutting oxygen, but no connection for ignition gas. It there is no hose with which pilot gas is fed to the machine cutting torch. That is why the machine cutting torch is relatively inexpensive in terms of device technology, but it is reliable.
  • the arrangement of the mixing point and the heating oxygen pressure regulator in the machine cutting torch further ensures that the ignition gas formed, despite relatively low pressure and / or a low amount, quickly reaches the cutting oxygen channel, which is a component of the machine cutting torch. Since the solenoid valves are also arranged in the machine cutting torch, not only the mixing but also the control of the ignition process can take place in the machine cutting torch. Since the components mentioned are housed within the machine cutting torch, there is a high level of protection against damage.
  • the machine cutting torch is particularly robust and compact if the mixing point and the heating oxygen pressure reducer are integral components of the machine cutting torch.
  • At least one orifice plate is preferably provided, which has a metering opening and is less complex.
  • the machine cutting torch is designed overall with the features that an injector as a pilot gas mixing point, a fuel oxygen pressure reducing orifice and a fuel gas pressure reducing orifice are integral components of the valve body, that at least parts of the solenoid valves are accommodated in the valve body and that the injector is via the fuel gas pressure reducing orifice and the fuel gas solenoid valve is connected to the connection piece for fuel gas and is connected to the connection piece for heating oxygen via the heating oxygen pressure reducing orifice and the heating oxygen solenoid valve.
  • the mixing space for the ignition gas in the valve body is essentially formed by a bore.
  • a finer level regulation can be achieved according to claim 7 with a parallel arrangement of three diaphragms, each of which is preceded by a solenoid valve, in order to preselect the diaphragms individually or together depending on the cutting task by means of a CNC control.
  • a needle valve is arranged in the machine cutting torch between the mixing point and the connecting piece for the fuel gas.
  • the supply of the pilot gas mixture into the cutting oxygen channel of the machine cutting torch and the ignition by an electrical ignition device are conventional. Glow plugs, as are otherwise used for aircraft model construction, are preferably used here, which are therefore available inexpensively practically everywhere.
  • 1, 2 and 3 connecting pieces for cutting oxygen, heating oxygen and fuel gas are designated, which sit on a valve body 4.
  • the machine cutting torch further comprises a torch head 7, which can be connected to the valve body via a pipe (not shown) and into which a cutting oxygen channel 8 opens.
  • An ignition gas bore 9 leads to the ignition gas supply to the cutting oxygen channel.
  • a model spark plug 10 is connected to the cutting oxygen channel downstream of the junction of the pilot gas hole.
  • a fuel gas / heating oxygen mixture supply in the burning head 7 of the machine cutting torch is indicated at 11. It is based on a heating gas injector 12 which is likewise accommodated within the valve body.
  • a needle valve (not shown in the drawing) in the valve body can be provided in a supply of the fuel gas to the injector 12 for heating flame regulation.
  • An injector 14 is formed integrally in the valve body, in which the ignition gas is mixed and is therefore generally referred to as the mixing point of the ignition gas.
  • To supply the injector 14 for the formation of the ignition gas mixture with heating oxygen it is branched off from the heating oxygen supply and fed to the injector 14 via a solenoid valve and an orifice 6 with metering openings.
  • An arrangement of 3 orifices with metering openings can be provided, which are preselected by solenoid valves by means of a CNC control.
  • the fuel gas is supplied to the injector 14 via a solenoid valve 15 and an orifice or a needle valve 16 with a fixed setting.
  • the embodiment of the machine cutting torch according to FIG. 2 differs from that according to FIG. 1 with regard to the heating oxygen supply 24 for the ignition mixture formation.
  • a pressure reducer 17 is switched on instead of an orifice in the heating oxygen supply, which regulates the heating oxygen pressure in the injector 14 independently of fluctuations in the heating oxygen pressure at the connecting piece 2.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
  • Feeding And Controlling Fuel (AREA)
EP92122076A 1991-12-28 1992-12-28 Chalumeau à découper d'une machine d'oxycoupage pourvu d'un dispositif d'allumage interne Expired - Lifetime EP0550051B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CA002096405A CA2096405A1 (fr) 1992-12-28 1993-05-17 Machine pour chalumeau de coupage, dotee d'un dispositif d'allumage interne
US08/083,462 US5393223A (en) 1992-12-28 1993-06-30 Cutting torch machine having an internal ignition device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4143144A DE4143144C2 (de) 1991-12-28 1991-12-28 Maschinenschneidbrenner mit Innenzündeinrichtung
DE4143144 1991-12-28

Publications (3)

Publication Number Publication Date
EP0550051A2 true EP0550051A2 (fr) 1993-07-07
EP0550051A3 EP0550051A3 (en) 1993-10-20
EP0550051B1 EP0550051B1 (fr) 1998-12-02

Family

ID=6448221

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92122076A Expired - Lifetime EP0550051B1 (fr) 1991-12-28 1992-12-28 Chalumeau à découper d'une machine d'oxycoupage pourvu d'un dispositif d'allumage interne

Country Status (2)

Country Link
EP (1) EP0550051B1 (fr)
DE (2) DE4143144C2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8303298B2 (en) 2008-04-08 2012-11-06 Victro Equipment Company Advanced gas torch
WO2016008506A1 (fr) * 2014-07-14 2016-01-21 Gce Holding Ab Système de chalumeau d'oxycoupage d'une machine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4420935C1 (de) * 1994-06-16 1995-07-20 Messer Griesheim Schweistechni Schneidbrenner

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3516511A1 (de) * 1985-05-08 1986-11-13 Messer Griesheim Gmbh, 6000 Frankfurt Schneidbrenner
DE3527955A1 (de) * 1985-08-03 1987-02-12 Messer Griesheim Gmbh Schneidbrenner
DE3624504C1 (en) * 1986-07-19 1988-02-11 Messer Griesheim Gmbh Cutting torch with a nozzle, in particular block cutting nozzle
EP0432522A2 (fr) * 1989-12-15 1991-06-19 Messer Griesheim Gmbh Procédé d'allumage du courant de gaz principal des chalumeaux à découpage individuels

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3827750A1 (de) * 1988-08-16 1990-04-19 Messer Griesheim Gmbh Steuer- oder regelvorrichtung fuer zuendgase

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3516511A1 (de) * 1985-05-08 1986-11-13 Messer Griesheim Gmbh, 6000 Frankfurt Schneidbrenner
DE3527955A1 (de) * 1985-08-03 1987-02-12 Messer Griesheim Gmbh Schneidbrenner
DE3624504C1 (en) * 1986-07-19 1988-02-11 Messer Griesheim Gmbh Cutting torch with a nozzle, in particular block cutting nozzle
EP0432522A2 (fr) * 1989-12-15 1991-06-19 Messer Griesheim Gmbh Procédé d'allumage du courant de gaz principal des chalumeaux à découpage individuels

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8303298B2 (en) 2008-04-08 2012-11-06 Victro Equipment Company Advanced gas torch
WO2016008506A1 (fr) * 2014-07-14 2016-01-21 Gce Holding Ab Système de chalumeau d'oxycoupage d'une machine
CN106413964A (zh) * 2014-07-14 2017-02-15 Gce控股公司 机械割炬系统
US20170129033A1 (en) * 2014-07-14 2017-05-11 Gce Holding Ab Machine cutting torch system
US10569352B2 (en) 2014-07-14 2020-02-25 Gce Holding Ab Machine cutting torch system
US11110535B2 (en) 2014-07-14 2021-09-07 Gce Holding Ab Machine cutting torch system
US11691211B2 (en) 2014-07-14 2023-07-04 Gce Holding Ab Machine cutting torch system

Also Published As

Publication number Publication date
EP0550051A3 (en) 1993-10-20
DE59209578D1 (de) 1999-01-14
EP0550051B1 (fr) 1998-12-02
DE4143144A1 (de) 1993-07-01
DE4143144C2 (de) 1996-06-13

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