EP0212190A2 - Appareil pour couper des pièces - Google Patents

Appareil pour couper des pièces Download PDF

Info

Publication number: EP0212190A2
Authority: EP; European Patent Office
Prior art keywords: cutting; oxygen; gas; ignition; fuel gas
Prior art date: 1985-08-03
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

EP86109217A

Other languages

German (de)

English (en)

Other versions

EP0212190A3 (en

EP0212190B1 (fr

Inventor

Karl August Becker

Karl Gollwitz

Traugott Gutermann

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 GmbH

Original Assignee

Messer Griesheim 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.)

1985-08-03

Filing date

1986-07-05

Publication date

1987-03-04

1986-07-05 Application filed by Messer Griesheim GmbH filed Critical Messer Griesheim GmbH

1986-07-05 Priority to AT86109217T priority Critical patent/ATE60831T1/de

1987-03-04 Publication of EP0212190A2 publication Critical patent/EP0212190A2/fr

1988-01-13 Publication of EP0212190A3 publication Critical patent/EP0212190A3/de

1991-02-06 Application granted granted Critical

1991-02-06 Publication of EP0212190B1 publication Critical patent/EP0212190B1/fr

2006-07-05 Anticipated expiration legal-status Critical

Status 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 with a cutting oxygen channel and feeds for fuel gas and / or heating oxygen, which are connected to a fuel gas and oxygen supply source, and a fuel gas / oxygen mixture feed opening into the cutting oxygen channel, which feeder is assigned an electrical ignition device.
Such cutting torches are preferably used in NC flame cutting systems for cutting out individual workpieces from large-area plates, the cutting process being carried out with a fuel gas heating oxygen flame and cutting oxygen.
the heat emitted by the heating flame and the heat generated during the combustion of the material enables continuous combustion by the cutting oxygen jet.
the heating flame must be ignited with an ignition device before the flame cut.
the flow velocity in this heating slot is so great that the flame lifts off at the end face of the slot nozzle and disturbs the flow behavior of the immediately adjacent heating flames. Turbulence arises.
the specific heating power per unit area decreases in this entire area, which leads to cutting break if, as is the normal case, this area assumes a leading function during flame cutting and the predetermined cutting speed is maintained.
the invention has for its object to provide an ignition device in a cutting torch according to the preamble of the main claim, prevents flashbacks in the channel for the fuel gas-heating oxygen mixture, as well as avoiding negative influences by the cutting oxygen and one of the setting of the heating gases of the cutting torch independent and uncontrollable amount of ignition gas can be supplied to the ignition point.
This object is achieved in that the fuel gas-oxygen mixture supply is connected to the supply sources with the interposition of an ignition gas quantity control device.
the fuel gas oxygen Mixture supply ignition gas mixture supply
ignition gas mixture supply at an acute angle of preferably 15 to 30 ° into the cutting oxygen channel such that the ignition gas is directed into the spark area of the electrical ignition device, which is preferably designed as a spark / glow plug.
the screw-in center electrode of the spark / glow plug is preferably also arranged at an acute angle to the cutting oxygen channel and preferably forms an angle of, for example, 30 ° with the mixture feed.
the arrangement of the mixture supply on one side and the arrangement of the spark plug / glow plug below the mixture supply on the other side of the cutting oxygen channel advantageously ensure reliable ignition of the ignition gas within the cutting oxygen channel and thus a rapid escape of the pilot flame from the central cutting oxygen channel.
the advantages achieved by the invention consist in particular in that the separate fuel gas / oxygen mixture supply reliably prevents flashbacks in the heating gas duct and at the same time reliably prevents the heating gas escaping when cutting oxygen is switched on.
the direct connection of the mixture supply to the supply sources and the interposition of a pilot gas quantity control device advantageously achieves an electrical ignition of the main flame that works independently and unaffected by the setting of the heating gases of the cutting torch.
the defined amount of ignition gas per ignition for all fuel gases, such as acetylene, mixed gases, propane, methane (natural gas) can be set on the ignition gas quantity control device independently of the operator via the NC control.
An advantageous injector tuning and a pilot gas distributor assigned to the injector on the output side make it possible to connect several burners to only one pilot gas quantity control device.
FIG. 1 and FIG. 2 show a partial section of a cutting torch 10, (FIG. 1 and FIG. 2), preferably a three-hose machine cutting torch, which essentially consists of a valve body 11, a torch head 12 and a guide tube 13 connecting the torch head 12 to the valve body 11 consists.
a nozzle not shown, is attached to the burner head 12.
the nozzle is preferably designed as a two-part slot nozzle.
the heating nozzle is screwed into the internal thread 14 by means of an external thread formed at its upper end and the cutting nozzle is screwed into the internal thread 15 of the burner head 12.
heating nozzle and the cutting nozzle in one piece, or to fasten it to the torch head 12 by means of a pressure screw (not shown).
the cutting channel arranged in the middle of the cutting nozzle is connected to the cutting oxygen channel 16 of the torch head 12.
the cutting nozzle is connected to the cutting oxygen supply source 19 by means of a threaded connector 18 and a cutting oxygen line 20 via a connecting bore arranged in the valve body 11.
a regulating and / or control device 21 is arranged with which the cutting oxygen quantity can be regulated and / or controlled.
the cutting channel of the cutting nozzle, not shown, the cutting oxygen channel 16 and the cutting oxygen tube 17, as well as the connection bore, not shown, to the threaded connector 18 are preferably linear within the cutting torch 10 and thus advantageously enable the arrangement of a sensor for flame monitoring in the cutting oxygen tube / channel.
the heating nozzle is connected to the fuel gas supply source 24 via threaded connector 23 and fuel gas line 22 and to the heating oxygen source 9 via threaded connector 26 and heating oxygen line 27.
the fuel gas or heating oxygen guides arranged within the cutting torch 10 and connected to the threaded connections 23, 26 are not shown for reasons of clarity.
Regulation and / or control devices 8, 25 for regulating and / or controlling the fuel gas and the heating oxygen are arranged in the fuel gas line 22 and the heating oxygen line 27.
a backflow preventer with flame arrester and gas backflow valve is preferably arranged on the threaded connector 23.
the heating nozzle or the heating slots of the nozzle are connected via a fuel gas / heating oxygen mixture supply (heating gas mixture supply), not shown, to an injector, preferably arranged in the valve body 11.
the injector is connected to the threaded connector 23, 26 via a fuel gas guide and a heating oxygen guide.
An electrical ignition device which is designated 28 in its entirety, is arranged within the cutting torch 10.
the electrical ignition device 28 consists of a separate fuel gas-oxygen mixture feed 29 (ignition gas line) and an ignition device 30 designed as a spark / glow plug, which is connected via an ignition cable 31 to a not shown Ignition transformer is connected.
the spark / glow plug has a central electrode 32 which can be screwed into the burner head 12 and which is screwed into the burner head at an acute angle 35 of preferably 9 ° in a gas-tight manner.
the center electrode 32 is attached in a gas-tight manner by means of a stuffing box 33 and a pressure screw 34 which can be screwed into the burner head 12.
the center electrode is guided in a bore 36 arranged at an angle 35 to the straight cutting oxygen channel 16.
the bore 36 is connected to the cutting oxygen channel 16 and forms an ignition space 37 at the transition point, into which a pin-shaped body electrode 38 projects.
the body electrode 38 is preferably 1.5 to 2 mm from the center electrode 32 and is preferably fastened in the burner head 12.
the ignition gas line 29 opens into the cutting oxygen channel 16 in front of the ignition chamber 37 at an acute angle 39 of preferably 21 °.
the distance between the ignition chamber 37 and the ignition gas line 29 is designed so that the fuel gas oxygen mixture (ignition mixture) directly into the spark area is directed between body electrode 38 and center electrode 32.
the ignition gas line 29 is connected gas-tight to the valve body 11 at its other end.
the pilot gas line 29 is connected to the pilot gas quantity control device 45 via a connecting bore arranged in the valve body 11, the threaded connector 40 and the non-return valve 41 with a flame arrester and a gas backflow valve and a line 42.
the pilot gas quantity control device consists of a mixing point 46, preferably an injector, which is connected on the output side to a pilot gas distributor pipe 43 to which a plurality of cutting torches 10 can be connected via line 42.
a mixing point 46 preferably an injector
the pilot gas distributor pipe 43 to which a plurality of cutting torches 10 can be connected via line 42.
the Burner shut-off valves 44 arranged in the line 42, but preferably on the cutting torch 10.
four connections 47, 48, 49, 50 for four cutting torches 10 are shown, with only one cutting torch 10 being connected to the pilot gas distributor pipe 43 for reasons of clarity.
fuel gas and oxygen are premixed outside the cutting torch 10 and fed into the distributor pipe 43.
the injector 46 can be used for all gases that can be used for flame cutting, such as acetylene, propane, methane (natural gas) in a mixture with oxygen and enables a sufficient range of pressure-quantity settings.
the injector 46 is connected to the heating oxygen supply source 9 and the fuel gas supply source 24 via branch lines 51, 52 and connection T-pieces 53, 54 arranged in the heating oxygen line 27 and the fuel gas line 22.
a pressure regulator 55, 56 is arranged in each of the branch lines 51, 52, at which the pressures for pilot oxygen and pilot gas are set according to operating tables.
the ignition gas line 29 it is also possible to connect the ignition gas line 29 to separate ignition gas supply sources (fuel gas and oxygen supply source). This makes it possible for the pilot gas quantity control device 45 to be particularly simple, for. B. as a bypass.

Landscapes

Engineering & Computer Science (AREA)
Chemical & Material Sciences (AREA)
Combustion & Propulsion (AREA)
Mechanical Engineering (AREA)
General Engineering & Computer Science (AREA)
Gas Burners (AREA)
Arc Welding In General (AREA)
Laser Beam Processing (AREA)

EP86109217A 1985-08-03 1986-07-05 Appareil pour couper des pièces Expired - Lifetime EP0212190B1 (fr)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
AT86109217T ATE60831T1 (de)	1985-08-03	1986-07-05	Einrichtung zum schneiden von werkstuecken.

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE3527955		1985-08-03
DE19853527955 DE3527955A1 (de)	1985-08-03	1985-08-03	Schneidbrenner

Publications (3)

Publication Number	Publication Date
EP0212190A2 true EP0212190A2 (fr)	1987-03-04
EP0212190A3 EP0212190A3 (en)	1988-01-13
EP0212190B1 EP0212190B1 (fr)	1991-02-06

Family

ID=6277659

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP86109217A Expired - Lifetime EP0212190B1 (fr)	1985-08-03	1986-07-05	Appareil pour couper des pièces

Country Status (3)

Country	Link
EP (1)	EP0212190B1 (fr)
AT (1)	ATE60831T1 (fr)
DE (1)	DE3527955A1 (fr)

Cited By (1)

* 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

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE3803444C1 (en) *	1988-02-05	1989-04-13	Messer Griesheim Gmbh, 6000 Frankfurt, De	Gas-cutting or heating torch
DE3827750A1 (de) *	1988-08-16	1990-04-19	Messer Griesheim Gmbh	Steuer- oder regelvorrichtung fuer zuendgase
DE3941370A1 (de) *	1989-12-15	1991-06-20	Messer Griesheim Gmbh	Verfahren zum zuenden der hauptflammengase von einzelnen schneidbrennern
DE4143144C2 (de) *	1991-12-28	1996-06-13	Gce Rhoena Autogengeraete Gmbh	Maschinenschneidbrenner mit Innenzündeinrichtung
DE4420935C1 (de)	1994-06-16	1995-07-20	Messer Griesheim Schweistechni	Schneidbrenner
CN103553008B (zh) *	2013-10-30	2016-01-20	欧萨斯能源环境设备(南京)有限公司	一种氨氧化炉点火装置

Family Cites Families (4)

* 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
DD95736A1 (fr) *	1972-03-10	1973-02-12
DE2927695A1 (de) *	1979-07-09	1981-02-05	Messer Griesheim Gmbh	Flaemmbrenner
GB2072317B (en) *	1980-03-11	1983-10-12	Hamworthy Engineering	Burner

1985
- 1985-08-03 DE DE19853527955 patent/DE3527955A1/de active Granted
1986
- 1986-07-05 EP EP86109217A patent/EP0212190B1/fr not_active Expired - Lifetime
- 1986-07-05 AT AT86109217T patent/ATE60831T1/de not_active IP Right Cessation

Cited By (1)

* 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

Also Published As

Publication number	Publication date
DE3527955A1 (de)	1987-02-12
ATE60831T1 (de)	1991-02-15
DE3527955C2 (fr)	1989-03-30
EP0212190A3 (en)	1988-01-13
EP0212190B1 (fr)	1991-02-06

Legal Events

Date	Code	Title	Description
1987-01-19	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
1987-03-04	AK	Designated contracting states	Kind code of ref document: A2 Designated state(s): AT BE CH FR GB IT LI NL SE
1987-11-25	PUAL	Search report despatched	Free format text: ORIGINAL CODE: 0009013
1988-01-13	AK	Designated contracting states	Kind code of ref document: A3 Designated state(s): AT BE CH FR GB IT LI NL SE
1988-02-03	17P	Request for examination filed	Effective date: 19871208
1989-04-19	17Q	First examination report despatched	Effective date: 19890301
1990-12-22	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1991-02-06	AK	Designated contracting states	Kind code of ref document: B1 Designated state(s): AT BE CH FR GB IT LI NL SE
1991-02-06	REF	Corresponds to:	Ref document number: 60831 Country of ref document: AT Date of ref document: 19910215 Kind code of ref document: T
1991-03-29	ITF	It: translation for a ep patent filed
1991-04-12	ET	Fr: translation filed
1991-05-08	GBT	Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
1991-12-07	PLBE	No opposition filed within time limit	Free format text: ORIGINAL CODE: 0009261
1991-12-07	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT
1992-01-29	26N	No opposition filed
1992-07-09	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: CH Payment date: 19920709 Year of fee payment: 7
1992-07-14	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: AT Payment date: 19920714 Year of fee payment: 7
1992-08-31	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: BE Payment date: 19920831 Year of fee payment: 7
1993-06-25	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: GB Payment date: 19930625 Year of fee payment: 8
1993-07-05	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: AT Effective date: 19930705
1993-07-15	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: SE Payment date: 19930715 Year of fee payment: 8
1993-07-31	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: LI Effective date: 19930731 Ref country code: CH Effective date: 19930731 Ref country code: BE Effective date: 19930731
1993-07-31	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: NL Payment date: 19930731 Year of fee payment: 8
1994-01-31	BERE	Be: lapsed	Owner name: MESSER GRIESHEIM G.M.B.H. Effective date: 19930731
1994-03-31	REG	Reference to a national code	Ref country code: CH Ref legal event code: PL
1994-07-05	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: GB Effective date: 19940705
1994-07-06	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: SE Effective date: 19940706
1995-01-31	EUG	Se: european patent has lapsed	Ref document number: 86109217.9 Effective date: 19950210
1995-02-01	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: NL Effective date: 19950201
1995-03-01	GBPC	Gb: european patent ceased through non-payment of renewal fee	Effective date: 19940705
1995-03-16	NLV4	Nl: lapsed or anulled due to non-payment of the annual fee
1995-04-03	EUG	Se: european patent has lapsed	Ref document number: 86109217.9
1996-07-09	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: FR Payment date: 19960709 Year of fee payment: 11
1998-03-31	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19980331
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2005-07-05	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20050705

Publication	Publication Date	Title
DE69207073T2 (de)	1996-05-15	Zufuhranlage für die Brennstoff- und Wassereinspritzung in den Verbrennungsteil einer rotierenden Maschine und Verfahren zum Betrieb der Brennstoffzufuhranlage
EP0339499B1 (fr)	1993-12-15	Dispositif de surveillance du fonctionnement de la plaque de brûleur d'un brûleur à panneaux
DE68918812T2 (de)	1995-05-18	Zündvorrichtung und -verfahren für nachmischenden Brenner.
DE825197C (de)	1951-12-17	Spritzpistole zum Druckgasspritzen von schmelzbaren Materialien
EP0212190B1 (fr)	1991-02-06	Appareil pour couper des pièces
DE3718597A1 (de)	1987-12-10	Schneidbrenner
EP0687859B1 (fr)	2001-03-14	Torche de coupage
DE3516511A1 (de)	1986-11-13	Schneidbrenner
DE3827750C2 (fr)	1990-07-19
DE3524773A1 (de)	1987-01-22	Verfahren zum automatischen rberwachen einer flamme
DE1919247C3 (de)	1980-01-17	Vorrichtung zum Zünden eines dem Hilfsbrenner einer Abfackelvorrichtung zuströmenden brennbaren Gas-Luft-Gemisches
DE3624504C1 (en)	1988-02-11	Cutting torch with a nozzle, in particular block cutting nozzle
DE4235856A1 (de)	1994-05-05	Verfahren und thermisches Bearbeitungswerkzeug zum Zünden eines Brenngas-Heizsauerstoffgemisches
DE4143144C2 (de)	1996-06-13	Maschinenschneidbrenner mit Innenzündeinrichtung
DE3826279C2 (de)	1994-08-25	Gasbrenner mit einer Brennerkammer
DE2819132C2 (de)	1980-03-20	Gasemischender Schneidbrenner
DE3050694C2 (de)	1986-04-17	Einrichtung zum Gasstrahlschneiden von Materialien
DE19512762A1 (de)	1996-10-10	Verfahren zum Zünden eines Brenners, insbesondere Maschinenstarkschneidbrenners, für die Materialbearbeitung
EP0432522A2 (fr)	1991-06-19	Procédé d'allumage du courant de gaz principal des chalumeaux à découpage individuels
DE3941371A1 (de)	1991-06-20	Verfahren zum zuenden eines brenners fuer die materialbearbeitung
DE3413335A1 (de)	1985-12-12	Schweissbrenner
DE2304215A1 (de)	1973-09-13	Verfahren und vorrichtung zum zuenden des heizgases eines maschinenschneidbrenners
DE2927695A1 (de)	1981-02-05	Flaemmbrenner
EP0482432A2 (fr)	1992-04-29	Méthode de découpage submergé
DE8619453U1 (de)	1988-10-20	Schneidbrenner mit einer Düse, insbesondere Blockschneiddüse

EP0212190A2 - Appareil pour couper des pièces - Google Patents

Info

Links

Images

Classifications

Definitions

Landscapes

Priority Applications (1)

Applications Claiming Priority (2)

Publications (3)

Family

ID=6277659

Family Applications (1)

Country Status (3)

Cited By (1)

Families Citing this family (6)

Family Cites Families (4)

Cited By (1)

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