EP0687859B1 - Torche de coupage - Google Patents

Torche de coupage Download PDF

Info

Publication number
EP0687859B1
EP0687859B1 EP95108886A EP95108886A EP0687859B1 EP 0687859 B1 EP0687859 B1 EP 0687859B1 EP 95108886 A EP95108886 A EP 95108886A EP 95108886 A EP95108886 A EP 95108886A EP 0687859 B1 EP0687859 B1 EP 0687859B1
Authority
EP
European Patent Office
Prior art keywords
cutting
gas
oxygen
ignition
heating
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
EP95108886A
Other languages
German (de)
English (en)
Other versions
EP0687859A3 (fr
EP0687859A2 (fr
Inventor
Manfred Agel
Karl Gollwitz
Klaus Sonnenborn
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.)
Messer Griesheim Schweisstechnik GmbH and Co
Original Assignee
Messer Griesheim Schweisstechnik GmbH and Co
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 Messer Griesheim Schweisstechnik GmbH and Co filed Critical Messer Griesheim Schweisstechnik GmbH and Co
Publication of EP0687859A2 publication Critical patent/EP0687859A2/fr
Publication of EP0687859A3 publication Critical patent/EP0687859A3/fr
Application granted granted Critical
Publication of EP0687859B1 publication Critical patent/EP0687859B1/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 cutting torch Claim 1.
  • the fuel gas / heating oxygen mixture and the cutting oxygen jet are set on the valves of the cutting torch.
  • the fuel gas-heating oxygen mixture will be fuel gas (e.g. acetylene) and oxygen mixed in a ratio of 1: 1.
  • the fuel gas is sucked in by the flowing heating oxygen and mixes in the mixing nozzle and the fuel gas heating oxygen supply line. This gas mixture burns after Ignite at the cutting nozzle as a flame.
  • Such cutting torch internal ignition devices are, for example in DE-A-35 16 511 and in US-A-3 255 803.
  • the pilot gas flows from the cutting torch known from US Pat. No. 3,255,803 via a cross hole from the heating channel into the cutting oxygen and is ignited here via an ignition device.
  • the disadvantages with such a cross hole are connected, namely rollover Pilot light in the heating duct and unilaterally influencing the Heating flame with flowing cutting oxygen, should after the DE-A-35 16 511 by an arranged in the transverse bore Threaded screw can be prevented.
  • Pilot gas mixture through an adjusting valve on each cutting torch and adjust separately for each cutting nozzle so that tolerances e.g. B. in the pilot gas line or the adjustment fittings for fuel gas and Heating oxygen, or the setting of the heating gases can be compensated can.
  • tolerances e.g. B. in the pilot gas line or the adjustment fittings for fuel gas and Heating oxygen, or the setting of the heating gases can be compensated can.
  • the pilot gas volume can be applied to the respective cutting nozzle can be adjusted.
  • the Cutting torches can be operated at fuel gas pressures from 0.2 bar because the dynamic pressure building up in the distribution channel is independent of the Inlet pressures of the heating gases have an almost constant value, which is sufficient that the pilot gas at the required pressure on one Flame arrester downstream of the adjusting valve is present and therefore is adjustable.
  • the cutting torch according to the invention is highly safe because Flashbacks of the pilot flame due to the in the Ignition gas pipe arranged flame arrestors not to Flashbacks in the distribution channel and fuel gas / heating oxygen mixture feed to lead.
  • the ignition device of the cutting torch is simply that Cutting torch of the fuel gas type is designed accordingly and too handle and low maintenance and requires no complex Control.
  • the cutting torch has no structural Change can be operated with all fuel gases because that Pilot gas mixture of the previously adjusted in the correct ratio Heating flame removed and in terms of quantity via a setting valve of the Flame cutting nozzle can be adjusted.
  • a cutting torch 10 is shown in partial section essentially from a valve body 11, a burner head 12, a Injector with gas mixture leading line and a burner head 12 with the valve body 11 connecting guide tube 13.
  • a nozzle not shown, is attached to the burner head 12.
  • the nozzle is preferably in two parts and is designed as a slot nozzle.
  • the heating nozzle is hereby by means of one at its upper end trained external thread in the internal thread 14 (Fig. 2) and Cutting nozzle into the internal thread 15 of the torch head 12 screwed in.
  • heating nozzle and the Form cutting nozzle in one piece, or by means of one not closer to fix the pressure screw shown on the burner head 12.
  • the cutting channel arranged in the middle of the cutting nozzle stands with the cutting oxygen supply line 16 of the torch head 12 in connection.
  • the cutting oxygen supply line 16 extends over the Cutting oxygen tube 17 into the valve body 11. Via one in the Valve body 11 extending not shown Connection hole is the cutting nozzle by means of connection 18 to the Cutting oxygen supply source 19 connected.
  • a non-return valve with flame arrester 20 and an adjusting valve 21 is arranged with which the cutting oxygen is set.
  • the cutting channel of the cutting nozzle, not shown, the Cutting oxygen channel 16 and the cutting oxygen tube 17 and the Connection hole, not shown, to the threaded connector 18 are preferably rectilinear within the cutting torch 10 trained and thus advantageously allow the arrangement of a Flame monitoring sensors in the cutting oxygen pipe / duct.
  • the heating nozzle is via the fuel gas / heating oxygen mixture feed line 23 (FIG. 2) with that arranged in the valve body 11 Injector connected.
  • the injector not shown, is over Connection piece 22, 26 for the fuel gas and the heating oxygen, Adjustment valves 43, 44 and non-return valves 27 with Flame arrestor, 8 with flame arrestors with the fuel gas and Heating oxygen supply sources 24, 9 connected. That within the Guide tube 13 of the cutting torch 10 arranged and over the Injector with the connecting piece 22, 26 connected fuel gas-heating oxygen mixture pipe 23 is not shown in Figure 1 for reasons of clarity shown.
  • Non-return valve 41 with flame arrester runs the pilot gas line 29 via connection piece 50 back into the burner 10 (Connecting hole 29 b).
  • the ignition gas line 29 is there with the Distribution channel 45 (see Fig. 2) connected.
  • the distribution channel 45 supplies the heating slots of the nozzle (not shown in more detail) with the fuel gas / heating oxygen mixture, that via the fuel gas / heating oxygen mixture feed line 23 is introduced into the distribution channel 45.
  • Distribution channel 45 forms one of the when the nozzle is screwed in The amount of fuel gas / heating oxygen mixture is almost independent Back pressure, so that the fuel gas-heating oxygen mixture automatically as premixed ignition gas in the arranged in the burner head 12 and in flows the distributor channel 45 opening channel of the pilot gas line 29.
  • the ignition gas is formed by the capillary tube Pilot gas line 29 in the direction of arrow 46 from the cutting torch 10 led out. It flows in through a flame arrester 42 Addressing valve 47 (solenoid valve) and a setting valve 48 or one Aperture to the non-return valve 41 with flame arrestor and Capillary tube arranged between valve body 11 and burner head 12 back into the cutting torch 10. It gets into the Cutting oxygen supply line 16 opposite the ignition electrode 30 fed and ignited. The pilot flame emerges from the Cutting oxygen channel from the nozzle and ignites it from the Fuel gas / heating oxygen mixture emerging from the heating slots.
  • the Ignition process is controlled depending on the time and is for example after 4 Seconds ended.
  • the addressing valve 47 is closed, see above that when the cutting oxygen is switched on there is no connection between the cutting oxygen supply line 16 and the fuel gas / heating oxygen mixture supply line consists.
  • the pilot gas mixture can also directly on the injector or the subsequent fuel gas / heating oxygen mixture feed line 23 are removed. At The pilot gas mixture can direct pressure burners to the mixed flow or be taken from the subsequent mixture line.
  • the Shut-off valve 47 can of course also within the burner be arranged, e.g. at the exit of the burner head at position 46.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)

Claims (3)

  1. Torche de coupe, composée d'un corps de soupape (11), d'une tête de chalumeau (12), d'une tuyère dont les canaux de chauffage sont reliés par un canal de répartition (45) logé dans la tête (12) à une conduite (23) d'un mélange de gaz combustible et d'oxygène chaud, le canal d'oxygène de coupe de la tuyère étant relié à une conduite (16) d'amenée de l'oxygène de coupe, ainsi que d'une conduite de gaz d'allumage (29) comportant au moins une soupape (47) reliée au canal de répartition (45) ou à la conduite (23) du mélange gaz combustible/oxygène de coupe et débouchant dans la conduite (16) d'amenée de l'oxygène de coupe, cette conduite (16) ainsi que la conduite de mélange (23) étant reliées à travers le corps de soupape (11) aux alimentations en gaz, tandis que la conduite (29) de gaz d'allumage alimente en mélange de gaz combustible et d'oxygène servant de gaz d'allumage, à partir du canal de répartition (45) ou de la conduite de mélange (23), la conduite (16) d'oxygène de coupe où ce mélange est enflammé par un dispositif d'allumage (28).
  2. Torche de coupe selon la revendication 1,
    caractérisée en ce que
    dans la conduite de gaz d'allumage (29) sont montés, un blocage de flamme (42) en amont de la soupape (47) et une soupape de réglage (48) ou un diaphragme en aval de cette soupape (47).
  3. Torche de coupe selon l'une quelconque des revendications 1 ou 2,
    caractérisée en ce que
    la conduite de gaz d'allumage (29) va du canal de répartition (45) jusqu'au corps de soupape (11) et revient au chalumeau de coupe (19) jusqu'à l'intérieur de la tête de chalumeau (12) où elle débouche dans la canalisation (16) d'oxygène de coupe.
EP95108886A 1994-06-16 1995-06-09 Torche de coupage Expired - Lifetime EP0687859B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4420935 1994-06-16
DE4420935A DE4420935C1 (de) 1994-06-16 1994-06-16 Schneidbrenner

Publications (3)

Publication Number Publication Date
EP0687859A2 EP0687859A2 (fr) 1995-12-20
EP0687859A3 EP0687859A3 (fr) 1997-05-14
EP0687859B1 true EP0687859B1 (fr) 2001-03-14

Family

ID=6520663

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95108886A Expired - Lifetime EP0687859B1 (fr) 1994-06-16 1995-06-09 Torche de coupage

Country Status (2)

Country Link
EP (1) EP0687859B1 (fr)
DE (2) DE4420935C1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2326934A (en) * 1997-07-01 1999-01-06 Drax Torches Ltd Burners
FR2792395B1 (fr) 1999-04-13 2001-07-13 Soudure Autogene Francaise Dispositif d'allumage pour bruleur et bruleur equipe d'un tel dispositif
FR2837914B1 (fr) 2002-03-29 2004-11-19 Air Liquide Bloc allumeur pour chalumeau et chalumeau le comprenant
CN106002078B (zh) * 2016-07-13 2017-11-03 江阴德玛斯特钻具有限公司 摩擦焊机的除飞边装置
CN109631080B (zh) * 2019-01-30 2023-11-07 徐慕庆 一种自动点火装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3255803A (en) * 1962-08-23 1966-06-14 Harris Calorific Co Torch with igniter
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
DE3941370A1 (de) * 1989-12-15 1991-06-20 Messer Griesheim Gmbh Verfahren zum zuenden der hauptflammengase von einzelnen schneidbrennern
DE3941371A1 (de) * 1989-12-15 1991-06-20 Messer Griesheim Gmbh Verfahren zum zuenden eines brenners fuer die materialbearbeitung
DE4143144C2 (de) * 1991-12-28 1996-06-13 Gce Rhoena Autogengeraete Gmbh Maschinenschneidbrenner mit Innenzündeinrichtung
DE4235856A1 (de) * 1992-10-23 1994-05-05 Messer Griesheim Gmbh Verfahren und thermisches Bearbeitungswerkzeug zum Zünden eines Brenngas-Heizsauerstoffgemisches

Also Published As

Publication number Publication date
DE59509086D1 (de) 2001-04-19
EP0687859A3 (fr) 1997-05-14
DE4420935C1 (de) 1995-07-20
EP0687859A2 (fr) 1995-12-20

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