EP0751346B1 - Gasmischende Brennschneiddüse - Google Patents
Gasmischende Brennschneiddüse Download PDFInfo
- Publication number
- EP0751346B1 EP0751346B1 EP96110199A EP96110199A EP0751346B1 EP 0751346 B1 EP0751346 B1 EP 0751346B1 EP 96110199 A EP96110199 A EP 96110199A EP 96110199 A EP96110199 A EP 96110199A EP 0751346 B1 EP0751346 B1 EP 0751346B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- turned
- fuel gas
- gas
- cutting torch
- torch nozzle
- 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
Links
Images
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
- F23D14/46—Details, e.g. noise reduction means
- F23D14/48—Nozzles
- F23D14/52—Nozzles for torches; for blow-pipes
- F23D14/54—Nozzles for torches; for blow-pipes for cutting or welding metal
Definitions
- the invention relates to a gas-mixing cutting nozzle according to the preamble of claim 1.
- Gas-mixing flame cutting nozzles are made from the solid body not only the central cutting channel, but also completely the flow channels of a fuel gas / heating oxygen mixture arranged around this as well as those upstream Mixing points in which channels for fuel gas on channels for Heated heating oxygen, molded.
- the channels run here for fuel gas / heating oxygen over large partial lengths directed inside.
- the diameter of the flow channels and the upstream channels for heating oxygen are along the direction of flow is different.
- a gas-mixing cutting nozzle of the type mentioned Genus that consists of at least three turned parts is already known, but not for the mixture of heating oxygen and acetylene, which is a gas mixture with a very high ignition rate form (U.S. Patent 2,993,531). Rather, the well-known Flame cutting nozzle only for mixing heating oxygen Propane or similar fuel gases are provided which are slowly burning Form gas mixtures.
- the known Flame cutting nozzle the internal turned part as an inner nozzle with the cutting channel shaped on an outside so that it an annular first channel of relatively large opening width, an adjoining covenant, one on top of it following annular second channel relatively large Opening width and then enlarged a section again Diameter following in the flow direction of the gas mixture forms.
- the named second Channel forms an expansion chamber in connection with one smooth cylindrical inner wall of a second rotating part, in which is the first turned part.
- the gas mixing Flame cutting nozzle is completed by a seat ring or two seat ring parts over the head end of the first Are rotated from the longitudinally extending part Channels shaped as metering channels for the cutting oxygen are.
- the fuel gas like propane, is passed through these metering channels an annular groove in one seat ring or - in another Execution - fed between the two seat ring parts.
- the present invention is therefore based on the object a gas-mixing cutting nozzle of the type mentioned Train genus so that it is an uncomplicated, easy reproducible manufacturing allowed and a cutting nozzle results, which in particular when using acetylene gas for Forming the fuel gas / oxygen mixture or a fuel gas, which is also a very different fuel gas / oxygen mixture high ignition speed results in the high demands the re-ignition security is sufficient and a long non-destructive Life expectancy.
- This task is accomplished through the formation of the flame cutting nozzle with that specified in the characterizing part of claim 1 Feature solved.
- the cutting nozzle is designed according to claim 13 with the feature that the cutting channel in the first rotating part in the ends at the same height as the second rotating part surrounding it.
- the first rotating part is preferably in the lower Region tapering in the shape of a truncated cone, with a central bore in the second rotating part analogously tapered in the shape of a truncated cone, that the flow channels are directed inwards below are. With these precise channels, the heating flame can be in the desired Way to be set.
- the second rotating part has a frustoconical shape downwards have tapered area to the related to achieve basically known advantages.
- a cutting oxygen channel in the first rotating part via a truncated cone tapering downwards Section into the lower cutting channel.
- This Cutting oxygen channel with the frustoconical section can be numerically in the same clamping position of the first rotating part are manufactured in a controlled manner in which the others Processing steps take place.
- the turned parts can advantageously consist of copper, which can be machined well.
- Fig. 1 is the first, the inner nozzle forming rotary part with 1 designated. Its basic shape is approximately cylindrical with a frustoconical section 2 in a lower region 3.
- the first rotating part has a central cutting channel on the inside 4, in which a cutting oxygen channel 5 over one frustoconical section 6 passes. Above the first turned part ends in a sealing seat 7.
- the flow channels are outward through a second rotary part 11 completed, which is also essentially cylindrical with a lower frustoconical Area 12 is formed.
- the second rotating part has one central inner bore 13, which is substantially cylindrical is, however, in the lower area 12 analogous to the lower Area of the first rotating part tapers in the shape of a truncated cone.
- webs are e.g. 23, 24 between the Flow channels for the fuel gas / heating oxygen mixture at the Inner bore, which also the first rotating part 1 in the second rotating part 11 is aligned concentrically.
- These bores as fuel gas passages 17, 18 are fuel gas, especially acetylene, supplied via a connection to a sealing seat 19 of the third rotating part is sealed.
- a heating oxygen which via a connection, not shown, to a sealing seat 20 of the third rotating part is supplied.
- the Sealing seats 19, 20, 21 are therefore concentrically in a head region 22 of the composite cutting nozzle.
- the composite nozzle is usable as heating gas for acetylene and - apart from a relatively low manufacturing effort - in the easy to achieve high manufacturing accuracy, in particular of the cutting channel 4, the flow channels 8, 9 for the heating flame and therefore in a high repeat quality of the flame cut achieved with the composite flame cutting nozzle.
- the variant 25 of the first rotary part shown in FIG. 6 differs from the first rotating part 1 in FIGS. 1 and 4 only slightly, but is shown larger, the central cutting channel or cutting oxygen channel not shown are.
- the representation is half parallel to the longitudinal axis cut so that the shape of the generally designated 26 Flow channel can be seen more precisely.
- the flow channel 26 - likewise each of those distributed over the scope remaining flow channels - in a region 27 between the Mouth of a fuel gas passage through the approximate radial bores 17, 18 in the third rotating part 14, see 3 and 4, is embodied, the position of which is indicated by an arrow 28 is indicated in Fig.
- the flow channel 26 also tapers from the depth in the area 27 to a minimum depth at a lower end 30.
- the flow channel 26 represents a mixing channel.
- Upstream of area 27 is an unspecified one Sole of the flow channel 26, as shown in detail in FIG. 6 shown, curved so that the depth of the flow channel to a shallower depth in a first section 31 of the Flow channel 26 reduced.
- an upstream subsequent section 32 increases the depth of the Flow channel 26 again corresponding to that shown in Fig. 6 Curvature of the sole.
- the first section 31 forms a dosing channel for the Heating oxygen, which is fed into the groove 33.
- the feed Acetylene as the fuel gas is again carried out with the third 3 and 4 with its approximately radial Holes 18.19.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gas Burners (AREA)
- Nozzles (AREA)
Description
- Fig. 1
- ein erstes als Innendüse ausgebildetes Drehteil in einem Längsschnitt,
- Fig. 2
- ein zweites Drehteil, welches maßgeblich die Außendüse bildet, ebenfalls in einem Längsschnitt,
- Fig. 3
- ein drittes Drehteil, welches als Mischer geformt ist, ebenfalls in einem Längsschnitt,
- Fig. 4
- eine Brennschneiddüse, bestehend aus den drei Teilen nach den Fig. 1, 2 und 3 in einer Längsseitenansicht,
- Fig. 5
- einen vergrößerten Querschnitt durch die Brennschneiddüse in der Ebene A-A in Fig. 4 und
- Fig. 6
- eine Variante des ersten Drehteils teilweise im Längsschnitt.
Claims (13)
- Gasmischende Brennschneiddüse mit einem zentralen Schneidkanal in einem massiven Körper und um den Schneidkanal angeordneten Strömungskanälen eines Brenngas/Heizsauerstoffgemischs für eine Heizflamme sowie mit Dichtsitzen für Schneidsauerstoff, Heizsauerstoff und Brenngas, insbesondere Acetylen, in einem Kopfbereich der Brennschneiddüse, wobei die Brennschneiddüse außen im wesentlichen zylindrisch ist, wobei die Brennschneiddüse (3) mindestens drei konzentrisch angeordnete Drehteile (1,11,14; 25)) umfaßt, wobei ein erstes, annähernd zylindrisches Drehteil (1; 25) als Innendüse mit dem Schneidkanal (4) ausgebildet ist, welcher zentral in das erste Drehteil (1) gebohrt ist, und auf seiner Außenseite ausgefräste, nach außen offene Strömungskanäle (8,9; 26) aufweist, wobei das erste Drehteil (1; 25) in ein zweites Drehteil (11) gesteckt ist, welches als Außendüse mit einer zentralen Innenbohrung (13) die Strömungskanäle (8,9; 26) des ersten Drehteils (1; 25) radial nach außen begrenzt, wobei in dem Kopfbereich (22) der Brennschneiddüse mindestens ein drittes, annähernd ringförmiges Drehteil (14), das als Mischer ausgebildet ist, im Anschluß an das zweite Drehteil (11), die Strömungskanäle (8,9) im Kopfbereich (22) radial nach außen begrenzend, gesteckt ist, wobei das dritte Drehteil (14) mindestens einen Brenngasdurchgang (17,18) aufweist, der Brenngas in wenigstens einen Heizsauerstoff führenden Strömungskanal (8,9) einleitet, um dort ein Brenngas/Heizsauerstoffgemisch zu bilden, wobei an das erste Drehteil (1; 25) der Dichtsitz (7) für den Schneidsauerstoff angeformt ist und das dritte Drehteil (14) konzentrische Dichtsitze (19,20) jeweils für Brenngas bzw. Heizsauerstoff aufweist,
dadurch gekennzeichnet,
daß die Strömungskanäle (8,9; 26) zumindest von der Mündung des Brenngasdurchgangs bis in einen unteren Bereich (3,12; 29) des ersten und zweiten Drehteils (1,11; 25), in dem sich diese verjüngen, durchgängig gefräst sind. - Gasmischende Brennschneiddüse nach Anspruch 1,
dadurch gekennzeichnet,
daß die Strömungskanäle (8,9; 26) auch stromaufwärts der Mündung des Brenngasdurchgangs (17,18) durchgehend gefräst sind. - Gasmischende Brennschneiddüse nach Anspruch 1 oder 2,
dadurch gekennzeichnet,
daß das erste Drehteil (1; 25) in dem unteren Bereich (3; 29) sich kegelstumpfförmig verjüngend ausgebildet ist, daß eine zentrale Innenbohrung (13) in dem zweiten Drehteil (11) sich in ihrem unteren Bereich (12) analog kegelstumpfförmig verjüngt, dergestalt, daß die Strömungskanäle (8,9; 26) unten nach innen gerichtet sind. - Gasmischende Brennschneiddüse, die in einem dem Kopfbereich abgewandten unteren Bereich annähernd kegelstumpfförmig ist, nach Anspruch 3,
dadurch gekennzeichnet,
daß das zweite Drehteil (11) außen einen sich nach unten kegelstumpfförmig verjüngenden Bereich (12) aufweist. - Gasmischende Brennschneiddüse nach einem der Ansprüche 1 bis 4,
dadurch gekennzeichnet,
daß in dem ersten Drehteil (1; 25) ein Schneidsauerstoffkanal (5) über einen sich nach unten kegelstumpfförmig verjüngenden Abschnitt (6) in den unteren Schneidkanal (4) übergeht. - Gasmischende Brennschneiddüse nach einem der Ansprüche 1 bis 5,
gekennzeichnet durch
einen oberen Flansch (15) des dritten Drehteils (14), auf dem das dritte Drehteil (14) koplanar sitzt. - Gasmischende Brennschneidmaschine nach einem der vorangehenden Ansprüche,
dadurch gekennzeichnet,
daß die drei Drehteile (1,11,14) aus Kupfer bestehen. - Gasmischende Brennschneiddüse nach einem der vorangehenden Ansprüche,
dadurch gekennzeichnet,
daß das dritte Drehteil (14) annähernd radiale Bohrungen als Brenngasdurchgänge (17,18) aufweist, die in die Strömungskanäle (8,9; 26) münden. - Gasmischende Brennschneiddüse nach einem der vorangehenden Ansprüche,
dadurch gekennzeichnet,
daß die Tiefe der Strömungskanäle (8,9; 26) zwischen der Mündung des mindestens einen Brenngasdurchgangs (17,18) und dem unteren Bereich des ersten und zweiten Drehteils (1,25; 11), in dem sich diese verjüngen, im wesentlichen über die Längsachse konstant und größer als in dem unteren Bereich (29) des ersten und zweiten Drehteils (1,25; 11) ist und daß die Tiefe der Strömungskanäle (8,9; 26) in einem ersten Abschnitt (31) stromaufwärts der Mündung des mindestens einen Brenngasdurchgangs (17,18) verringert ist. - Gasmischende Brennschneiddüse nach Anspruch 9,
dadurch gekennzeichnet,
daß ein Abschnitt jedes Strömungskanals (8,9; 26), in dem dieser von der größeren Tiefe auf die geringere Tiefe stromaufwärts der Mündung des mindestens einen Brenngasdurchgangs (17,18) reduziert ist, gekrümmt ist, dergestalt, daß die Krümmung tangential in die Sohle des Strömungskanals (8,9; 26) in dem Abschnitt größerer Tiefe übergeht. - Gasmischende Brennschneiddüse nach Anspruch 9 oder 10,
dadurch gekennzeichnet,
daß ein zweiter Abschnitt (32) jedes Strömungskanals (8,9; 26) stromaufwärts des ersten Abschnitts (31) des Strömungskanals, in dem dieser auf die geringere Tiefe reduziert ist, gegenüber der geringeren Tiefe wieder erweitert ist. - Gasmischende Brennschneiddüse nach an Ansprüchen 8 und 10,
dadurch gekennzeichnet,
daß die annähernd radialen Bohrungen (17,18) in dem dritten Drehteil (14) annäherend parallel zu der Krümmung der Sohle des Strömungskanals (26) in deren oberen, äußeren Bereich (33) verlaufen, in dem dieser von der größeren Tiefe auf eine geringere Tiefe stromaufwärts der Mündung der annähernd radialen Bohrungen übergeht, welche die Brenngasdurchgänge (17,18) bilden. - Gasmischende Brennschneiddüse nach einem der vorangehenden Ansprüche,
dadurch gekennzeichnet,
daß der Schneidkanal (4) in dem ersten Drehteil (1) in der gleichen Höhe endet wie das ihn umgebende zweite Drehteil (11).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19523499A DE19523499C2 (de) | 1995-06-28 | 1995-06-28 | Gasmischende Brennschneiddüse |
DE19523499 | 1995-06-28 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0751346A1 EP0751346A1 (de) | 1997-01-02 |
EP0751346B1 true EP0751346B1 (de) | 2000-04-26 |
Family
ID=7765473
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96110199A Expired - Lifetime EP0751346B1 (de) | 1995-06-28 | 1996-06-25 | Gasmischende Brennschneiddüse |
Country Status (6)
Country | Link |
---|---|
US (1) | US5799878A (de) |
EP (1) | EP0751346B1 (de) |
AT (1) | ATE192224T1 (de) |
DE (2) | DE19523499C2 (de) |
ES (1) | ES2147329T3 (de) |
PT (1) | PT751346E (de) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6726471B2 (en) | 2001-08-27 | 2004-04-27 | The Esab Group, Inc. | Flashback arrestor for use with head of Oxy-fuel torch |
JP4942263B2 (ja) * | 2001-08-31 | 2012-05-30 | ラムリサーチ株式会社 | 洗浄装置 |
US6979422B2 (en) * | 2003-02-18 | 2005-12-27 | The Esab Group, Inc. | Active flashback arrestor for use with head of a torch |
US6935577B2 (en) * | 2003-02-28 | 2005-08-30 | Illinois Tool Works Inc. | One-piece fluid nozzle |
US8609020B2 (en) * | 2010-08-03 | 2013-12-17 | Victor Equipment Company | Gas cutting tip with improved flow passage |
CN103727533A (zh) * | 2012-10-12 | 2014-04-16 | 张利华 | 一种用于醇燃料的火焰切割机发生器装置 |
DE102014218219A1 (de) * | 2014-09-11 | 2016-03-17 | Siemens Aktiengesellschaft | Kompaktbrenner für einen Flugstromvergaser, bar einer Flüssigkeitskühlung |
CN109967822A (zh) * | 2019-04-28 | 2019-07-05 | 宁波市奉化一洲焊割工具有限公司 | 乙炔割嘴及其生产工艺 |
US20230392785A1 (en) * | 2022-06-01 | 2023-12-07 | Iht Automation Gmbh & Co. Kg | Welding or cutting torch |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT95290B (de) | 1922-12-15 | 1923-12-10 | Overhoff Fa Julius | Windhaube für Kaminkühler. |
US2993531A (en) * | 1959-04-13 | 1961-07-25 | Air Reduction | Torch tips and methods of making same |
FR2647531B1 (fr) * | 1989-05-12 | 1991-08-16 | Air Liquide | Tete de coupe a jet d'oxygene |
US5273216A (en) * | 1991-09-05 | 1993-12-28 | Canadian Liquid Air Ltd. - Air Liquide Canada Ltee | Oxy-fuel cutting tip having swaged gas outlet passages |
-
1995
- 1995-06-28 DE DE19523499A patent/DE19523499C2/de not_active Expired - Fee Related
-
1996
- 1996-06-25 DE DE59605025T patent/DE59605025D1/de not_active Expired - Lifetime
- 1996-06-25 PT PT96110199T patent/PT751346E/pt unknown
- 1996-06-25 AT AT96110199T patent/ATE192224T1/de not_active IP Right Cessation
- 1996-06-25 EP EP96110199A patent/EP0751346B1/de not_active Expired - Lifetime
- 1996-06-25 ES ES96110199T patent/ES2147329T3/es not_active Expired - Lifetime
- 1996-06-28 US US08/672,539 patent/US5799878A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
ATE192224T1 (de) | 2000-05-15 |
US5799878A (en) | 1998-09-01 |
DE19523499C2 (de) | 2002-01-24 |
ES2147329T3 (es) | 2000-09-01 |
DE59605025D1 (de) | 2000-05-31 |
EP0751346A1 (de) | 1997-01-02 |
DE19523499A1 (de) | 1997-01-09 |
PT751346E (pt) | 2000-10-31 |
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