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EP0492384A1 - Buse pour un dispositif et procédé de pulvérisation à grande vitesse de la flamme - Google Patents

Buse pour un dispositif et procédé de pulvérisation à grande vitesse de la flamme Download PDF

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Publication number
EP0492384A1
EP0492384A1 EP91121679A EP91121679A EP0492384A1 EP 0492384 A1 EP0492384 A1 EP 0492384A1 EP 91121679 A EP91121679 A EP 91121679A EP 91121679 A EP91121679 A EP 91121679A EP 0492384 A1 EP0492384 A1 EP 0492384A1
Authority
EP
European Patent Office
Prior art keywords
cooling
nozzle
gas
acceleration
region
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
EP91121679A
Other languages
German (de)
English (en)
Other versions
EP0492384B1 (fr
Inventor
Götz Matthäus
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.)
OSU-MASCHINENBAU GmbH
Original Assignee
OSU-MASCHINENBAU 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 OSU-MASCHINENBAU GmbH filed Critical OSU-MASCHINENBAU GmbH
Publication of EP0492384A1 publication Critical patent/EP0492384A1/fr
Application granted granted Critical
Publication of EP0492384B1 publication Critical patent/EP0492384B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/16—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed
    • B05B7/20—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed by flame or combustion
    • B05B7/201—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed by flame or combustion downstream of the nozzle
    • 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
    • F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
    • F23D14/78—Cooling burner parts

Definitions

  • the invention is directed to a nozzle for a device for high-speed flame spraying of metallic, metallic-carabid and / or oxide-ceramic materials, the nozzle being equipped with a spray medium supply, a gas mixture supply with combustion chamber and a cooled acceleration area, and a corresponding method.
  • Nozzles for high-speed flame spraying are known in different designs, with the known nozzles having in common that they have water-cooled acceleration or stabilization areas.
  • DE 39 03 887-A1 and European patent applications EP 0 049 915-A1, EP 0 135 826-A1, EP 0 249 790-A2 and EP 0 361 709-A1 are examples of a large number of such solutions.
  • the disadvantage of this solution is that the energy absorbed by the cooling water is lost to the process. Also, the cooling water cannot usually be used for other purposes, i.e. a fluid is moved here, which is used only and exclusively for cooling.
  • the object of the invention is to provide a solution with the temperature of the flame is adjustable, the temperature-regulating fluid being able to be used directly in high-speed flame spraying.
  • this object is achieved according to the invention in that gas cooling channels and / or annular spaces for ambient air as cooling gas with injection openings for sucking the cooling gas into the interior of the nozzle are provided for at least part of the cooling of the acceleration area.
  • this object is achieved according to the invention in that, in order to optimize the temperature and / or speed of the spray flame for cooling at least a part of the acceleration region, ambient air is used in the nozzle and is fed to the flame spray region.
  • Another possibility with the nozzle according to the invention or with the procedure according to the invention is to leave the flame hot by adding the ambient air, but to slow the flow if it is not drawn directly into the interior or is only partially drawn.
  • the nozzles can be equipped with cooling channels in which additional cooling fins are provided.
  • the gas flow can also be selected so that it has a comparatively long flow path from the outside inwards in a meandering shape to the inside of the nozzle in order to absorb a large amount of heat.
  • cooling air there can be several inflow regions into the interior of the flow channel of the nozzle for cooling air, it also being possible to provide cooling ring channels which widen in a cascade fashion towards the tip, but which are provided with separate gas feeds and which extend up to Increase the tip to derive the gas volumes.
  • part of the cooling gases is introduced as jacket gases at the end of the nozzle and only a part is drawn into the interior of the nozzle in the region of the ignition or combustion chamber.
  • FIGS. 1-7 all those parts are provided with the same reference numbers which are functionally the same, possibly supplemented by lower case letters for better identification.
  • the nozzle generally designated 1
  • the acceleration range 4 ends at the actual nozzle mouth, which is denoted by 5 in the example according to FIG. 1.
  • the acceleration area 4 is surrounded by an approximately cylindrical component 6, which partially surrounds the nozzle head 2 with its inner truncated cone in FIG. 1 and is surrounded on the outside by two coupling sleeves 7 and 8 such that, as shown, a flow channel is formed.
  • suction bores 11 are provided distributed around the circumference.
  • a nozzle flow assumed from left to right in FIG. 1 is generated, which is indicated by a large number of small arrows 12.
  • the outer wall of the acceleration area surrounding cylindrical part 6 can also be equipped with cooling fins 14, which the sucked air sweeps past and thus can increase the cooling.
  • FIG. 2 A modified exemplary embodiment is shown in FIG. 2, the component surrounding the acceleration region 4a being formed with two shells and bearing the reference numerals 6a and 6b there.
  • the essentially cylindrical element 6a carries the suction openings 11, while the likewise substantially cylindrical element 6b carries further suction openings 11a in such a way that the surroundings of cooling air can be sucked in in two stages.
  • FIG. 3 shows a somewhat different design in this respect, in which the element 6c leaves a suction ring gap 11c open, the suction openings for ambient air lying outside the cooling channels 9c are designated 11b in FIG. 3.
  • FIG. 4 shows another type of construction, which is used in particular to provide, for example, ambient air as the enveloping gas of the nozzle denoted by 1c, annular cooling channels 9d and 9e being arranged in cascade behind one another and each increasing in diameter.
  • the nozzle body 6d can be designed as a built-in part, corresponding ones lying against inner walls Ring seals are shown and designated 15.
  • FIGS. 2 and 3 which is not shown in FIG.
  • the nozzle 1c can also be used as a cascade injector in such a way that different fuel gases can be mixed in through the suction openings 17 or 17 'or else different fuel gases with cooling gas, the front ring opening 16 also being replaceable by a plurality of outlet bores 16 distributed around the circumference '.
  • FIG. 5 shows cooling channels 9f with a cross-sectional meandering design, with this construction having comparatively small injection bores 11f and a front annular outlet opening 16a, by means of which the cooling gas can be supplied as jacket gas.
  • FIGS. 4 and 5 show that here, too, cooling gas cannot necessarily be supplied from the environment, but e.g. can be given as compressed air.
  • FIGS. 6 and 7 show design options for the nozzles 1e and 1f, in which the ambient air cooling is provided in the region of the nozzle body 2 and 2f, while parts of the acceleration range 4e or 4f have, for example, water cooling, which are designated by the cooling channels here with 17 or 17a and 18.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Nozzles (AREA)
EP91121679A 1990-12-22 1991-12-18 Buse pour un dispositif et procédé de pulvérisation à grande vitesse de la flamme Expired - Lifetime EP0492384B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4041623 1990-12-22
DE4041623A DE4041623A1 (de) 1990-12-22 1990-12-22 Duese fuer eine vorrichtung und ein verfahren zum hochgeschwindigkeitsflammenspritzen

Publications (2)

Publication Number Publication Date
EP0492384A1 true EP0492384A1 (fr) 1992-07-01
EP0492384B1 EP0492384B1 (fr) 1995-05-31

Family

ID=6421326

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91121679A Expired - Lifetime EP0492384B1 (fr) 1990-12-22 1991-12-18 Buse pour un dispositif et procédé de pulvérisation à grande vitesse de la flamme

Country Status (3)

Country Link
EP (1) EP0492384B1 (fr)
AT (1) ATE123238T1 (fr)
DE (2) DE4041623A1 (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995022033A1 (fr) * 1994-02-10 1995-08-17 Solar Turbines Incorporated Injecteur a temperature de buse faible
EP1038988A3 (fr) * 1999-03-25 2003-01-29 Mitsubishi Denki Kabushiki Kaisha Dispositif de vaporisation pour appareil CVD
FR2928278A1 (fr) * 2008-03-04 2009-09-11 Dominique Bayle Dispositif mobile et transportable pour la projection d'un revetement
US20110229649A1 (en) * 2010-03-22 2011-09-22 Baranovski Viatcheslav E Supersonic material flame spray method and apparatus
DE102011052121A1 (de) 2011-07-25 2013-01-31 Eckart Gmbh Beschichtungsverfahren nutzend spezielle pulverförmige Beschichtungsmaterialien und Verwendung derartiger Beschichtungsmaterialien
DE102011052119A1 (de) 2011-07-25 2013-01-31 Eckart Gmbh Verfahren zur Substratbeschichtung und Verwendung additivversehener, pulverförmiger Beschichtungsmaterialien in derartigen Verfahren
WO2013014211A2 (fr) 2011-07-25 2013-01-31 Eckart Gmbh Utilisation de matériaux de revêtement pulvérulents à enrobage spécial et procédés de revêtement mettant en oeuvre de tels matériaux de revêtement
WO2013014213A2 (fr) 2011-07-25 2013-01-31 Eckart Gmbh Procédé de revêtement de substrat et utilisation de matériaux de revêtement pulvérulents avec additifs dans de tels procédés
US20150182989A1 (en) * 2009-01-14 2015-07-02 Resodyn Corporation Flameless thermal spray system using flame heat source
EP2959992A1 (fr) 2014-06-26 2015-12-30 Eckart GmbH Procédé de fabrication d'un aérosol contenant des particules
CN115161584A (zh) * 2022-07-01 2022-10-11 国家电投集团江西水电检修安装工程有限公司 一种火焰热喷涂方法及耐空蚀水轮机转轮叶片

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2060652B1 (fr) * 2006-08-14 2013-11-27 Nakayama Amorphous Co., Ltd. Procédé et dispositif de formage de film de revêtement amorphe

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB733401A (en) * 1950-09-20 1955-07-13 Rheem Mfg Co Improvements in flame spray apparatus, particularly for spraying with a fusible material
CA1141650A (fr) * 1980-07-10 1983-02-22 Leonard M. Barisoff Bruleur a tube de soufflage

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB733401A (en) * 1950-09-20 1955-07-13 Rheem Mfg Co Improvements in flame spray apparatus, particularly for spraying with a fusible material
CA1141650A (fr) * 1980-07-10 1983-02-22 Leonard M. Barisoff Bruleur a tube de soufflage

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995022033A1 (fr) * 1994-02-10 1995-08-17 Solar Turbines Incorporated Injecteur a temperature de buse faible
EP1038988A3 (fr) * 1999-03-25 2003-01-29 Mitsubishi Denki Kabushiki Kaisha Dispositif de vaporisation pour appareil CVD
FR2928278A1 (fr) * 2008-03-04 2009-09-11 Dominique Bayle Dispositif mobile et transportable pour la projection d'un revetement
US9533318B2 (en) 2009-01-14 2017-01-03 Resodyn Corporation Flameless thermal spray system using flame heat source
US20150182989A1 (en) * 2009-01-14 2015-07-02 Resodyn Corporation Flameless thermal spray system using flame heat source
US20110229649A1 (en) * 2010-03-22 2011-09-22 Baranovski Viatcheslav E Supersonic material flame spray method and apparatus
WO2013014211A2 (fr) 2011-07-25 2013-01-31 Eckart Gmbh Utilisation de matériaux de revêtement pulvérulents à enrobage spécial et procédés de revêtement mettant en oeuvre de tels matériaux de revêtement
DE102011052120A1 (de) 2011-07-25 2013-01-31 Eckart Gmbh Verwendung speziell belegter, pulverförmiger Beschichtungsmaterialien und Beschichtungsverfahren unter Einsatz derartiger Beschichtungsmaterialien
WO2013014213A2 (fr) 2011-07-25 2013-01-31 Eckart Gmbh Procédé de revêtement de substrat et utilisation de matériaux de revêtement pulvérulents avec additifs dans de tels procédés
WO2013014214A2 (fr) 2011-07-25 2013-01-31 Eckart Gmbh Procédé de revêtement mettant en oeuvre des matériaux de revêtement pulvérulents spéciaux et utilisation de tels matériaux de revêtement
DE102011052119A1 (de) 2011-07-25 2013-01-31 Eckart Gmbh Verfahren zur Substratbeschichtung und Verwendung additivversehener, pulverförmiger Beschichtungsmaterialien in derartigen Verfahren
DE102011052121A1 (de) 2011-07-25 2013-01-31 Eckart Gmbh Beschichtungsverfahren nutzend spezielle pulverförmige Beschichtungsmaterialien und Verwendung derartiger Beschichtungsmaterialien
US9580787B2 (en) 2011-07-25 2017-02-28 Eckart Gmbh Coating method using special powdered coating materials and use of such coating materials
EP2959992A1 (fr) 2014-06-26 2015-12-30 Eckart GmbH Procédé de fabrication d'un aérosol contenant des particules
CN115161584A (zh) * 2022-07-01 2022-10-11 国家电投集团江西水电检修安装工程有限公司 一种火焰热喷涂方法及耐空蚀水轮机转轮叶片

Also Published As

Publication number Publication date
EP0492384B1 (fr) 1995-05-31
DE4041623A1 (de) 1992-06-25
ATE123238T1 (de) 1995-06-15
DE59105625D1 (de) 1995-07-06

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