US3484044A - Cutting torch nozzle and method - Google Patents

Cutting torch nozzle and method Download PDF

Info

Publication number
US3484044A
US3484044A US627471A US3484044DA US3484044A US 3484044 A US3484044 A US 3484044A US 627471 A US627471 A US 627471A US 3484044D A US3484044D A US 3484044DA US 3484044 A US3484044 A US 3484044A
Authority
US
United States
Prior art keywords
oxygen
nozzle
cutting
fuel
fuel gas
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
US627471A
Other languages
English (en)
Inventor
Franz Dombruch
Traugott Gutermann
Karl W E Teske
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.)
Filing date
Publication date
Application filed by Messer Griesheim GmbH filed Critical Messer Griesheim GmbH
Application granted granted Critical
Publication of US3484044A publication Critical patent/US3484044A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S266/00—Metallurgical apparatus
    • Y10S266/904—Blowpipe cutting heads

Definitions

  • a cutting torch nozzle includes a central stream of cutting oxygen, an intermediate annular stream of fuel gas surrounding the cutting oxygen, and an outer annular stream of additional oxygen surrounding the fuel gas.
  • the fuel gas mixes externally with the oxygen supplied from both the central cutting stream and the outer additional stream.
  • the outer stream also acts as a shield for the fuel gas to assure its complete combustion and minimize mixture with the air which would result in undesired carbon deposits or soot.
  • This invention relates to a nozzle for a metal cutting torch, and more particularly to such a cutting torch which externally mixes oxygen with its fuel.
  • an oxygen stream and post-mixed preheating flames that is flames formed by the combustion fuel gas and oxidizing gas mixed externally of the nozzle, in order to avoid the formation of an inflammable gas mixture with in the torch, and hence undesirable reactions in the torch such as backfiring.
  • Some torches do not add a special heating oxygen stream to the fuel but instead construct the nozzle head in such a manner that the fuel obtains the oxygen necessary for or erly combustion, from the actual cutting or flame oxygen stream. This is achieved in a simple manner in that the fuel as well as the cutting or flame oxygen stream openings are situated so close to each other that the flames are formed immediately at the edge area of the oxygen stream.
  • An object of this invention is to provide a nozzle for effectively mixing fuel with oxygen streams outside a metal cutting torch.
  • a constantly satisfactory flame formation is achieved, irrespective of the fuel used, in cutting torches by means of a nozzle having one or more further oxygen exhaust openings closely arranged to the fuel exhaust openings with correspondingly the fuel exhaust openings surrounding the central cutting oxygen passage.
  • the fuel is concentrically arranged between two streams of oxygen.
  • the intermediate fuel stream mixes with oxygen from the central cutting stream as well as with oxygen from the outer annular stream.
  • the outer stream of oxygen has the added function of shielding the fuel from the air which assures a complete combustion or mixing of the fuel while preventing the formation of carbon deposits or soot.
  • arrangements which contain outer streams of fuel gas or of premixed gases permit a mixture of the air and fuel gas. Since air containsover nitrogen and other inert gases there is an incomplete combustion in that the fuel gas is not fully oxidized. This in turn results in carbon formations or soot on the workpiece which increases the strength of the workpiece rendering it more difficult to cut or work with at some subsequent time.
  • the nozzle top for the cutting torch is constructed by providing the additional oxygen exhaust openings concentrically around the round fuel gas exhaust slot or the ring of individual openings for fuel gas exhaust, either in the form of an annular passage or a num er of individual passages of any diameter desired.
  • the additional oxygen exhaust openings may be arranged in the ring area of the fuel gas openings in an alternating manner. In other words all of the additional oxygen exhaust openings are not radially aligned with the fuel openings. In all of these arrangements of the additional oxygen exhaust openings and the fuel gas opening there results in an especially eflective manner a double outer mixture, irrespective of the central cutting oxygen passageway.
  • This double outer mixture may also be accomplished by constructing the nozzle tip for the cutting torch with the additional oxygen exhaust openings concentrically surrounding the round fuel gas exhaust slot or the ring of individual openings for the fuel gas exhaust, either in the form of an annular opening or a number of individual openings of any cross section desired.
  • FIGS. 1-3 are crosssectional views of three embodiments of this invention.
  • FIG. 4 is a side view partially broken away and in section of the nozzle shown in FIG. 3.
  • FIG. 4 shows the general arrangement of a cutting torch head 10 incorporating one of the nozzles 1 of this invention.
  • cutting oxygen is supplied through conduit 7 into central bore 1 of torch head and nozzle 11.
  • Conduit 8 conducts the gaseous fuel through a number of apertures or spaced coarcuate passageways 12 which are concentric with central oxygen cutting passageway 1.
  • Additional oxygen is supplied through conduit 9 into spaced passages 23 in jacket 26 concentrically arranged about passages 12.
  • FIG. 1 shows one form of a nozzle where there are arranged around the central cutting oxygen bore or passage 1, an annular or ringlike passage or slot 2 for fuel gas in place of individual passages. Surrounding passage 2 is another annular channel 3 for supplying the additional heating oxygen.
  • the nozzle tip represented in FIG. 2 is constructed in two parts.
  • the actual cutting nozzle 4, which contains the central cutting oxygen bore 1, is provided with slots or grooves 12 on its outer surface.
  • Heating cap 5 is secured to and surrounds nozzle 4 to thus transform slots or grooves 12 into closed canals or passages for the fuel gas.
  • Cap 5 also has a plurality of grooves or slots 13 on its outer surface which, in turn become canals or passages for the additional oxygen when jacket 6 is screwed on or otherwise secured on or otherwise secured to cap 5.
  • FIG. 3 is a cross-sectional view of the nozzle 11 shown in FIG. 4 and includes a sleeve 26 surrounding cutting nozzle 4 which contains central oxygen passage 1.
  • Nozzle 4 is provided with spaced longitudinal grooves 12 which form fuel passages when jacket 26 is secured to nozzle 4.
  • Sleeve or jacket 26 has a series of spaced longitudinal passages 23 which conduct the additional oxygen. In this arrangement the need for a special heating cap such as cap 5 of FIG. 2, is eliminated.
  • the arrangement and diameter size of the exhaust canals or passages for the actual cutting oxygen, fuel gas, as well as additional oxygen are entirely arbitrary and depend on the requirements and circumstances of a particular case.
  • the exhaust openings for the additional oxygen can be installed in the same exhaust ring or annular member as the fuel gas, particularly in such a manner that the gas and oxygen exhaust openings are alternatively arranged.
  • all of the additional oxygen passageways 13 or 23 are not radially aligned with fuel passageways 12.
  • the principle of the double outer mixture can be used for torches of other types and nature, eg for flame torches or the like.
  • This concept can thus be used in cases where any other cross-section forms for the gas and oxygen exhaust are present, such as elongated ex haust slots for the oxygen with heating gas exhaust openings in the form of bores or slots mounted above and/ or below the oxygen exhaust openings.
  • the nozzle of this invention which enables such double outer mixture is not only of importance in the use of gases with more slight exhaust velocity as acetylene; but
  • acetylene since despite its comparatively high oxidation velocity there results in the outer zone of the flame opening and incomplete oxidation which forms undesired carbon deposits or soot on the workpiece. This soot has a detrimentral affect on the strength of the workpiece. This carbon deposit is avoided, however, in the use of an outer oxygen sheet around the acetylene, and there occurs, furthermore, because of the additional oxygen an intensive burning and thus makes a better utilization (i.e. complete combustion) of the acetylene.
  • the nozzle of this invention is, of course, not limited to a particular type of fuel gas.
  • the double outer mixture can be extended to a multiple outer mixture, as it is considered for example in preheating torches with large effective surfaces.
  • a nozzle for a torch operated by the external mixing of its gases comprising a central cutting oxygen stream outlet, a plurality of gas passageways concentrically arranged about said central outlet for conducting a corresponding number of unmixed gases from the torch. said outlet and said passageways being coterminous whereby internal mixing is avoided, said central outlet having a feed end and a discharge end, means connected to said feed end for feeding cutting oxygen gas through said outlet, said plurality of passageways comprising a pair of passageways, one of said passageways being an intermediate passageway concentrically arranged between one of the said passageways and said central outlet, the other of said passageways being an outer passageway, means connected to the feed end of said intermediate passageway for feeding fuel gas therethrough, and means connected to the feed end of said outer passageway for feeding additional oxygen therethrough.
  • a nozzle as set forth in claim 4 wherein a second plurality of grooves are in the external surface of said sleeve, an outer member fitting over said sleeve to form a top wall for said second plurality of grooves, and said second plurality of grooves being said outer passageway for additional oxygen.
  • a process for externally mixing gases from a torch nozzle comprising supplying a cutting stream of oxygen through a central outlet in the nozzle, supplying an intermediate annular stream of pure fuel gas through a passageway around said central outlet, supplying an outer annular stream of additional oxygen through a passageway around said fuel gas passageway, mixing said fuel gas externally of said nozzle with oxygen from both said central stream and said outer stream, and shielding said fuel gas from the atmosphere by said outer stream of additional oxygen.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
US627471A 1963-08-17 1967-03-31 Cutting torch nozzle and method Expired - Lifetime US3484044A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK0050559 1963-08-17

Publications (1)

Publication Number Publication Date
US3484044A true US3484044A (en) 1969-12-16

Family

ID=7225668

Family Applications (1)

Application Number Title Priority Date Filing Date
US627471A Expired - Lifetime US3484044A (en) 1963-08-17 1967-03-31 Cutting torch nozzle and method

Country Status (5)

Country Link
US (1) US3484044A (de)
AT (1) AT265820B (de)
GB (1) GB1070788A (de)
LU (1) LU46574A1 (de)
SE (1) SE329821B (de)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3788558A (en) * 1971-10-27 1974-01-29 Mitsubishiki Jukogyo Kk Cutting torch
US5307992A (en) * 1992-11-18 1994-05-03 Usbi Co. Method and system for coating a substrate with a reinforced resin matrix
US5447567A (en) * 1991-10-18 1995-09-05 Freund Industrial Co., Ltd. Apparatus for coating powdery material
US6076750A (en) * 1995-10-27 2000-06-20 Upm-Kymmene Oyj Device for filling packages
US6079976A (en) * 1996-05-22 2000-06-27 Toyota Jidosha Kabushiki Kaisha Structure for supply of fuel and pilot air
US6389998B2 (en) * 1996-12-27 2002-05-21 Sumitomo Osaka Cement Co., Ltd. Device and method for combustion of fuel
US6729334B1 (en) * 1994-06-17 2004-05-04 Trudell Medical Limited Nebulizing catheter system and methods of use and manufacture
US7137254B1 (en) * 2000-07-05 2006-11-21 Federal State Unitary Enterprise Chemical Automatic Design Bureau (Cadb) Coaxial spray nozzle injector
US7914517B2 (en) 2003-10-31 2011-03-29 Trudell Medical International System and method for manipulating a catheter for delivering a substance to a body cavity
CN109623136A (zh) * 2019-01-21 2019-04-16 中国人民解放军陆军工程大学 燃烧型钢构件定向切割装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2699989B1 (fr) * 1992-12-29 1995-01-27 Air Liquide Buse et chalumeau d'oxycoupage.

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB494218A (en) * 1937-02-27 1938-10-21 Linde Air Prod Co Improvements in methods of, and apparatus for severing metals by fusion
US2243184A (en) * 1937-08-19 1941-05-27 Oxweld Acetylene Co Method of making blowpipe nozzles
DE890332C (de) * 1951-07-03 1953-09-17 Hoerder Huettenunion Ag Schneidbrenner-Duesensatz
US2657650A (en) * 1947-05-21 1953-11-03 Nat Cylinder Gas Co Torch for cutting stainless steel
US3364970A (en) * 1967-04-03 1968-01-23 Messer Griesheim Gmbh Cutting torch nozzle and method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB494218A (en) * 1937-02-27 1938-10-21 Linde Air Prod Co Improvements in methods of, and apparatus for severing metals by fusion
US2243184A (en) * 1937-08-19 1941-05-27 Oxweld Acetylene Co Method of making blowpipe nozzles
US2657650A (en) * 1947-05-21 1953-11-03 Nat Cylinder Gas Co Torch for cutting stainless steel
DE890332C (de) * 1951-07-03 1953-09-17 Hoerder Huettenunion Ag Schneidbrenner-Duesensatz
US3364970A (en) * 1967-04-03 1968-01-23 Messer Griesheim Gmbh Cutting torch nozzle and method

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3788558A (en) * 1971-10-27 1974-01-29 Mitsubishiki Jukogyo Kk Cutting torch
US5447567A (en) * 1991-10-18 1995-09-05 Freund Industrial Co., Ltd. Apparatus for coating powdery material
US5307992A (en) * 1992-11-18 1994-05-03 Usbi Co. Method and system for coating a substrate with a reinforced resin matrix
US5579998A (en) * 1992-11-18 1996-12-03 Usbi Co. Method for coating a substrate with a reinforced resin matrix
US7469700B2 (en) 1994-06-17 2008-12-30 Trudell Medical Limited Nebulizing catheter system for delivering an aerosol to a patient
US6729334B1 (en) * 1994-06-17 2004-05-04 Trudell Medical Limited Nebulizing catheter system and methods of use and manufacture
US7472705B2 (en) 1994-06-17 2009-01-06 Trudell Medical Limited Methods of forming a nebulizing catheter
US6076750A (en) * 1995-10-27 2000-06-20 Upm-Kymmene Oyj Device for filling packages
US6079976A (en) * 1996-05-22 2000-06-27 Toyota Jidosha Kabushiki Kaisha Structure for supply of fuel and pilot air
US6389998B2 (en) * 1996-12-27 2002-05-21 Sumitomo Osaka Cement Co., Ltd. Device and method for combustion of fuel
US7137254B1 (en) * 2000-07-05 2006-11-21 Federal State Unitary Enterprise Chemical Automatic Design Bureau (Cadb) Coaxial spray nozzle injector
US7914517B2 (en) 2003-10-31 2011-03-29 Trudell Medical International System and method for manipulating a catheter for delivering a substance to a body cavity
CN109623136A (zh) * 2019-01-21 2019-04-16 中国人民解放军陆军工程大学 燃烧型钢构件定向切割装置

Also Published As

Publication number Publication date
GB1070788A (en) 1967-06-01
LU46574A1 (de) 1964-09-21
AT265820B (de) 1968-10-25
SE329821B (de) 1970-10-26

Similar Documents

Publication Publication Date Title
US5403181A (en) Method of low-NOx combustion and burner device for effecting same
US3484044A (en) Cutting torch nozzle and method
US3204682A (en) Oxy-gas blowpipe
US3364970A (en) Cutting torch nozzle and method
KR100480536B1 (ko) 단일 코히어런트 가스 제트를 생성하기 위한 방법 및 장치
MY111590A (en) A torch device for chemical processes
DE1551637A1 (de) Heizvorrichtung
US2376413A (en) Blowpipe nozzle
US2378346A (en) Apparatus for mixing and burning fuel
EP0210314A1 (de) Verfahren und Apparat zum Verbrennen von Brennstoff
US3923448A (en) Fuel mixing chamber for welding and cutting torches
US3389861A (en) Device for gas cutting utilizing a shield gas
US2868856A (en) Process and apparatus for partial oxidation of hydrocarbons
DE4239903C1 (de) Injektor-Mundstück für Brenneraggregate
US2356196A (en) Blowpipe apparatus
US3649206A (en) Apparatus for cracking and burning hydrocarbons
US3746500A (en) Cutting torch tip
US3563812A (en) Method for gas cutting while using shield gas
US2418533A (en) Gas torch
US3674213A (en) Cutting head for thermochemical machining
US2335330A (en) Method of mixing and burning fuel
US2016866A (en) Welding apparatus
US2456784A (en) Blowpipe apparatus
US4798530A (en) Nozzle assembly for hot air torch
ES296015Y (es) Boquilla de soplete con mezcla interna