EP3385618A1 - Method for flame alignment and burner assembly for same - Google Patents
Method for flame alignment and burner assembly for same Download PDFInfo
- Publication number
- EP3385618A1 EP3385618A1 EP17020337.6A EP17020337A EP3385618A1 EP 3385618 A1 EP3385618 A1 EP 3385618A1 EP 17020337 A EP17020337 A EP 17020337A EP 3385618 A1 EP3385618 A1 EP 3385618A1
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- EP
- European Patent Office
- Prior art keywords
- burner
- flame
- workpiece
- electric field
- electrode
- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C99/00—Subject-matter not provided for in other groups of this subclass
- F23C99/001—Applying electric means or magnetism to combustion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
- B21D1/06—Removing local distortions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
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- 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
- F23D14/32—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid using a mixture of gaseous fuel and pure oxygen or oxygen-enriched air
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- 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
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- 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
- F23D14/465—Details, e.g. noise reduction means for torches
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- 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
- F23D14/84—Flame spreading or otherwise shaping
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- 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
- F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
- F23D14/04—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner
- F23D14/10—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner with elongated tubular burner head
- F23D14/105—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner with elongated tubular burner head with injector axis parallel to the burner head axis
Definitions
- the method can also be applied to electrically conductive workpieces that are coated with electrically non-conductive materials.
- the electric field between the torch and the substrate, so the actual workpiece, can be applied, wherein the electric field can overcome the dielectric barrier.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
Abstract
Die vorliegende Erfindung betrifft ein Verfahren zum Flammrichten, wobei Acetylen mit Sauerstoff unter Ausbildung einer Flamme (25) mittels eines Brenners (20) verbrannt und die Flamme (25) auf ein Werkstück (10) gerichtet wird, um dieses zu erwärmen, wobei zwischen dem Brenner (20) und dem nichtschmelzenden Werkstück (10), soweit dieses elektrisch leitet, oder einer werkstückseitig angeordneten nichtschmelzenden Elektrode (24) ein elektrisches Feld angelegt wird, um eine NOx-Emission zu reduzieren.The present invention relates to a method of flame straightening, wherein acetylene is burnt with oxygen to form a flame (25) by means of a burner (20) and the flame (25) is directed to a workpiece (10) to heat it, wherein between the Burner (20) and the non-melting workpiece (10), as far as this electrically conducts, or a workpiece side arranged non-melting electrode (24) an electric field is applied to reduce a NOx emission.
Description
Die vorliegende Erfindung betrifft ein Verfahren zum Flammrichten sowie eine Brenneranordnung zum Flammrichten und schließlich eine Verwendung einer solchen Brenneranordnung.The present invention relates to a method of flame straightening and a burner assembly for flame straightening and, finally, to a use of such a burner assembly.
Das Flammrichten ("flame straightening") ist ein gezieltes Flammwärmen (englisch "direct flame impingement heating") meist von Metallkonstruktionen, bei dem engbegrenzte Bauteilbereiche auf eine Flammrichttemperatur erwärmt werden. Wenn Bauteile beispielsweise durch Schweißen miteinander verbunden werden, entstehen durch die Erwärmungs- und Abkühlungsprozesse Spannungen, die zum Verzug des Werkstücks führen können. Beim Flammrichten wird das Werkstück gezielt örtlich bis in den plastischen Bereich erwärmt. Schweißtechnischer Verzug, Verwerfungen, Verbiegungen oder Verdrehungen lassen sich mit der Flamme schnell und werkstoffschonend richten. Bei der Erwärmung ist nicht nur die Höhe der Flammrichttemperatur zu beachten, sondern auch die Flammeneinstellung, um den werkstoffspezifischen Eigenschaften gerecht zu werden. Es wird insbesondere eine hartbrennende Acetylen-Sauerstoff-Flamme eingesetzt, die je nach Werkstoff neutral, sauerstoff- oder acetylenüberschüssig eingestellt wird.Flame straightening ("flame straightening") is targeted flame warming (English: "direct flame impingement heating") mostly of metal constructions, in which narrowly delimited component areas are heated to a flame straightening temperature. For example, when components are joined together by welding, the heating and cooling processes create stresses that can cause the workpiece to warp. During flame straightening, the workpiece is deliberately heated locally down to the plastic area. Welding distortion, distortion, bending or twisting can be addressed quickly and easily with the flame. When heating, not only the height of the flame straightening temperature must be considered, but also the flame setting to meet the material-specific properties. In particular, a hard-burning acetylene-oxygen flame is used, which is adjusted to neutral, oxygen or acetylene depending on the material.
Acetylen-Sauerstoff-Flammen bewirken hohe Flammentemperaturen und hohe Flammen-Ausbreitungsgeschwindigkeiten. Hierdurch lässt sich eine hohe Produktivität bei Anwendungen, wie das Vor- und Nachwärmen beim Schweißen, das Heißverformen, das Beschichtungsschmelzen, das Flammenlöten, das Flammbiegen etc., erreichen. Hohe Verbrennungstemperaturen können jedoch auch die Emission von Stickoxiden (NO, NO2; abgekürzt NOx) begünstigen.Acetylene-oxygen flames cause high flame temperatures and high flame propagation speeds. As a result, a high productivity in applications such as pre and post heating in welding, hot forming, coating melting, flame brazing, flame bending, etc. can be achieved. However, high combustion temperatures may also favor the emission of nitrogen oxides (NO, NO2, or NOx for short).
Eine Acetylen-Sauerstoff-Verbrennung weist eine andere chemisch-physikalische Kinetik auf als etwa eine Methan-Luft-Verbrennung. In der Acetylen-Sauerstoff-Verbrennung ist N2 in dem Oxidant nicht vorhanden. Das Aufbrechen der Dreifachbindung bei Acetylen (C2H2) liegt energetisch in einer anderen Größenordnung (Faktor 2 - 3) als die Methan (CH4)-Dissoziation. Bei der CH4 (oder C3H8) Verbrennung mit Luft bildet sich der größte Teil der NOx Menge bereits in der Flamme, da dort hohe Temperaturen sowie die Bestandteile N und O vorhanden sind. Bei der C2H2-Verbrennung mit 02 (Sauerstoff) kann die Bildung von NOx nur im Bereich der Sekundärflamme und am äußeren Rand der Flamme stattfinden, wo nämlich Stickstoff (N2) aus der Umgebungsluft in die Reaktion eingezogen wird.Acetylene-oxygen combustion has a different physicochemical kinetics than, for example, methane-air combustion. In the acetylene-oxygen combustion, N2 is not present in the oxidant. The breaking of the triple bond in acetylene (C2H2) is energetically in another Magnitude (factor 2 - 3) than methane (CH4) dissociation. In the case of CH4 (or C3H8) combustion with air, the majority of the amount of NOx is already formed in the flame, since there are high temperatures and the constituents N and O present. In C2H2 combustion with O2 (oxygen), the formation of NOx can take place only in the area of the secondary flame and at the outer edge of the flame, where nitrogen (N2) from the ambient air is drawn into the reaction.
Aufgabe vorliegender Erfindung ist es, auftretende NOx-Emissionen beim Flammrichten mit einer Acetylen-Sauerstoff-Flamme zu unterdrücken oder ganz zu vermeiden.The object of the present invention is to suppress or completely avoid occurring NOx emissions during flame straightening with an acetylene-oxygen flame.
Die vorliegende Erfindung betrifft ein Verfahren zum Flammrichten, wobei Acetylen mit Sauerstoff unter Ausbildung einer Flamme mittels eines Brenners verbrannt und die Flamme auf ein Werkstück gerichtet wird, um dieses zu erwärmen, sowie eine entsprechende Brenneranordnung gemäß den unabhängigen Patentansprüchen. Vorteilehafte Ausgestaltungen ergeben sich aus den jeweiligen Unteransprüchen sowie der nachfolgenden Beschreibung.The present invention relates to a method of flame straightening, wherein acetylene is burned with oxygen to form a flame by means of a burner and the flame is directed to a workpiece to heat it, and a corresponding burner assembly according to the independent claims. Advantageous embodiments emerge from the respective subclaims and the following description.
Erfindungsgemäß wird zwischen dem Brenner und dem nichtschmelzenden Werkstück, soweit dieses elektrisch leitet, ein elektrisches Feld angelegt, um eine NOx-Emission zu reduzieren. Alternativ wird das elektrische Feld zwischen dem Brenner und einer werkstückseitig angeordneten nicht schmelzenden Elektrode angelegt. Es hat sich gezeigt, dass bei geeigneter Einstellung der elektrischen Feldstärke sich die NOx Emission beim Flammrichten mit einer Acetylen-Sauerstoff-Flamme insbesondere im Bereich der Sekundärflamme und am äußeren Rand der Flamme reduzieren lässt. Hierbei ist es zweckmäßig, wenn die Form des erzeugten elektrischen Feldes insbesondere die genannten Bereiche der Sekundärflamme und des äußeren Randes der Acetylen-Sauerstoff-Flamme erfasst. Insbesondere kann die Form des elektrischen Feldes durch eine geeignete Form einer werkstückseitig angeordneten nicht schmelzenden Elektrode beeinflusst werden.According to the invention, an electric field is applied between the burner and the non-melting workpiece as far as it conducts electricity in order to reduce NOx emission. Alternatively, the electric field is applied between the torch and a workpiece-side non-melting electrode. It has been shown that with a suitable adjustment of the electric field strength, the NOx emission can be reduced during flame straightening with an acetylene-oxygen flame, in particular in the region of the secondary flame and at the outer edge of the flame. In this case, it is expedient for the shape of the electric field generated to capture in particular the said regions of the secondary flame and the outer edge of the acetylene-oxygen flame. In particular, the shape of the electric field may be influenced by a suitable shape of a workpiece-side non-melting electrode.
Das zwischen dem Brenner und der elektrisch leitenden Oberfläche eines nicht schmelzenden Werkstücks, das durch Flammrichten erwärmt wird, erzeugte elektrische Feld ändert die Verbrennungskinematik und die chemische Reaktionsdynamik in Richtung einer NOx-Reduktion. Dies wird verursacht durch Ionentrennung im elektrischen Feld sowie durch Kollisionseffekte der entsprechenden ionisierten Teilchen. Bei dem elektrisch leitenden Werkstück kann es sich um ein metallisches Werkstück oder aber um ein nicht metallisches Werkstück, das beispielsweise mit einem elektrisch leitenden Material beschichtet ist, handeln. Bei nicht elektrisch leitenden Werkstücken kann werkstückseitig eine nicht schmelzende Elektrode angeordnet werden. Die Elektrode wird hierbei vorzugsweise im Bereich der Flamme, vom Werkstück aus gesehen also flammenseitig, angeordnet. Eine besonders geformte, beispielsweise ringförmige Elektrode kann hierbei das elektrische Feld auf die oben erwähnten Bereiche (Sekundärflamme und äußerer Flammenrand) konzentrieren, in denen die NOx-Bildung begünstigt ist. In einer anderen Variation kann die Elektrode auch "unterhalb" des nicht leitenden Werkstücks, vom Werkstück aus gesehen also auf der der Flamme abgewandten Seite angeordnet werden. Auch wenn es sich um ein elektrisch leitendes Werkstück handelt, kann die Verwendung einer werkstückseitig angeordneten Elektrode vorteilhaft sein, etwa wenn das Anlegen einer direkten Spannung an das Werkstück problematisch ist. In diesem Fall wird die zusätzliche Elektroden in den Bereich zwischen Brenner und Werkstück, also in den Bereich der Flamme eingebracht.The generated between the burner and the electrically conductive surface of a non-melting workpiece, which is heated by flame straightening electric field changes the combustion kinematics and chemical reaction dynamics towards a NOx reduction. This is caused by ion separation in the electric field and by collision effects of the corresponding ionized particles. The electrically conductive workpiece may be a metallic workpiece or a non-metallic workpiece coated, for example, with an electrically conductive material. In non-electrically conductive workpieces, a non-melting electrode can be arranged on the workpiece side. In this case, the electrode is preferably arranged in the region of the flame, ie viewed from the workpiece, on the flame side. A specially shaped, for example, annular electrode can in this case concentrate the electric field on the above-mentioned regions (secondary flame and outer flame edge), in which the formation of NO x is favored. In another variation, the electrode can also be arranged "below" the non-conductive workpiece, seen from the workpiece so on the side facing away from the flame. Even if it is an electrically conductive workpiece, the use of a workpiece-side electrode may be advantageous, such as when the application of a direct voltage to the workpiece is problematic. In this case, the additional electrodes are introduced into the area between the burner and the workpiece, ie in the area of the flame.
Das Verfahren lässt sich auch bei elektrisch leitenden Werkstücken anwenden, die mit elektrisch nicht leitenden Materialien beschichtet sind. In diesen Fällen kann das elektrische Feld zwischen dem Brenner und dem Substrat, also dem eigentlichen Werkstück, angelegt werden, wobei das elektrische Feld die dielektrische Barriere überwinden kann.The method can also be applied to electrically conductive workpieces that are coated with electrically non-conductive materials. In these cases, the electric field between the torch and the substrate, so the actual workpiece, can be applied, wherein the electric field can overcome the dielectric barrier.
Bei dem elektrischen Feld kann es sich um ein Gleichspannungs- oder um ein Wechselspannungsfeld handeln. Es hat sich gezeigt, dass Gleichspannungsfelder günstiger für den genannten Effekt der NOx-Reduktion sind. Wechselspannungsfelder bieten hingegen eine höhere Flexibilität bezüglich der Beeinflussung der Flammeneigenschaften einerseits und der NOx-Reduktion andererseits. Es ist vorteilhaft, wenn die Polarität des elektrischen Feldes auf der Brennerseite negativ ist. Bei einem Wechselspannungsfeld kann dieses derart eingestellt werden, dass die Polarität auf der Brennerseite überwiegend negativ ist, so dass die positiven Phasen kürzer gewählt werden, als die negativen.The electric field may be a DC or AC field. It has been shown that DC fields are more favorable for the mentioned effect of NOx reduction. On the other hand, alternating voltage fields offer greater flexibility with regard to influencing the flame characteristics on the one hand and NOx reduction on the other hand. It is advantageous if the polarity of the electric field on the burner side is negative. In the case of an AC voltage field, this can be set such that the polarity on the burner side is predominantly negative, so that the positive phases are selected to be shorter than the negative ones.
Das elektrische Feld kann zweckmäßigerweise mittels wenigstens einer elektrischen Leitung zu dem Brenner und/oder wenigstens einer elektrischen Leitung zu der Elektrode oder zu dem elektrisch leitenden Werkstück erzeugt werden. Das elektrische Feld kann aber auch mittels wenigstens einer in dem oder an dem Brenner angeordneten Batterie und wenigstens einer elektrischen Leitung zur Elektrode bzw. zum elektrisch leitenden Werkstück erzeugt werden. Die wenigstens eine Batterie kann an geeigneter Stelle des Brenners (Düse, Schaft, Halterung oder Zuführung) angeordnet werden.The electric field can be conveniently generated by means of at least one electrical line to the burner and / or at least one electrical line to the electrode or to the electrically conductive workpiece. However, the electric field can also be generated by means of at least one arranged in or on the burner battery and at least one electrical line to the electrode or the electrically conductive workpiece. The at least one battery can be arranged at a suitable point of the burner (nozzle, shaft, holder or feeder).
Das angelegte elektrische Feld führt aufgrund von in der Flamme vorhandenen Ionen zu einem Stromfluss, wobei dieser Strom zwischen dem Brenner und der werkstückseitigen Elektrode bzw. dem Brenner und dem Werkstück detektiert oder gemessen und als Sicherheitshinweis verwendet werden kann, ob eine Flamme vorhanden ist. Sollte die Flamme erlöschen oder nicht zünden, kommt es zu einer Unterbrechung dieses Stroms. Aus der
Die Erfindung betrifft weiterhin eine Brenneranordnung zum Flammrichten umfassend wenigstens einen Brenner mit wenigstens einer Sauerstoffzufuhr und wenigstens einer Acetylenzufuhr und mit Mitteln, um eine von dem Brenner erzeugte Flamme auf ein Werkstück zu richten. Hierbei ist wenigstens eine Spannungsquelle vorgesehen, die derart eingerichtet ist, dass zwischen dem Brenner und dem nicht schmelzenden Werkstück, soweit dieses elektrisch leitet, oder einer werkstückseitig angeordneten nicht schmelzenden Elektrode ein elektrisches Feld angelegt wird, um eine NOx Emission zu reduzieren. Hierbei kann die werkstückseitig angeordnete Elektrode eine separate, vom Brenner unabhängige Elektrode sein oder eine, die mechanisch mit dem eigentlichen Brenner verbunden ist.The invention further relates to a burner assembly for flame straightening comprising at least one burner with at least one oxygen supply and at least one acetylene feed and with means for directing a flame generated by the burner onto a workpiece. In this case, at least one voltage source is provided, which is set up such that an electric field is applied between the burner and the non-melting workpiece, insofar as it conducts electrically, or a workpiece-side non-melting electrode, in order to reduce a NOx emission. Here, the electrode arranged on the workpiece side may be a separate electrode independent of the burner or one which is mechanically connected to the actual burner.
Zu weiteren Ausgestaltungen und Vorteilen dieses Aspekts der Erfindung sei auf die obigen Ausführungen zum erfindungsgemäßen Verfahren verwiesen. Die dortigen Ausführungen gelten in gleicher Weise für die erfindungsgemäße Brenneranordnung.For further embodiments and advantages of this aspect of the invention, reference is made to the above comments on the method according to the invention. The statements there apply in the same way for the burner assembly according to the invention.
Schließlich betrifft die Erfindung die Verwendung der genannten Brenneranordnung zur Reduktion einer NOx-Emission beim Flammrichten mit einer Acetylen-Sauerstoff-Flamme.Finally, the invention relates to the use of said burner arrangement for reducing NOx emission during Flammenrichten with an acetylene-oxygen flame.
Weitere Vorteile und Ausgestaltungen der Erfindung ergeben sich aus der Beschreibung und der beiliegenden Zeichnung.Further advantages and embodiments of the invention will become apparent from the description and the accompanying drawings.
Es versteht sich, dass die vorstehend genannten und die nachfolgend noch zu erläuternden Merkmale nicht nur in der jeweils angegebenen Kombination, sondern auch in anderen Kombinationen oder in Alleinstellung verwendbar sind, ohne den Rahmen der vorliegenden Erfindung zu verlassen.It is understood that the features mentioned above and those yet to be explained below can be used not only in the particular combination indicated, but also in other combinations or in isolation, without departing from the scope of the present invention.
Die Erfindung ist anhand von Ausführungsbeispielen in der Zeichnung schematisch dargestellt und wird im Folgenden unter Bezugnahme auf die Zeichnung beschrieben.The invention is illustrated schematically by means of embodiments in the drawing and will be described below with reference to the drawing.
- Figur 1FIG. 1
- zeigt schematisch eine erste Ausführungsform einer Brenneranordnung zum Flammrichten undschematically shows a first embodiment of a burner assembly for flame straightening and
- Figur 2FIG. 2
- zeigt schematisch eine zweite Ausführungsform einer Brenneranordnung zum Flammrichten.schematically shows a second embodiment of a burner assembly for flame straightening.
Zur Reduzierung von NOx-Emissionen im Bereich der Sekundärflamme im Randbereich der Flamme 25 wird zwischen dem Brenner 20 und dem nicht schmelzenden Werkstück 10, das in diesem Ausführungsbeispiel elektrisch leitet oder zumindest mit einer elektrisch leitenden Schicht beschichtet ist, ein elektrisches Feld erzeugt. Hierzu ist eine Spannungsquelle 23 vorgesehen, deren erster Pol über eine Leitung 26 mit dem Brenner 20 und deren zweiter Pol über eine Leitung 28 mit dem Werkstück 10 verbunden ist. Durch Einstellung einer geeigneten Feldstärke des elektrischen Feldes über Einstellung einer Spannung an der Spannungsquelle 23 lassen sich NOx-Emissionen stark reduzieren. Bei bestimmten Aufgaben mit Wärme-oder Oberflächen - empfindlichen Bauteilen kann auch ein Betrieb mit gepulstem Strom oder gezieltem Wechselstromanteilen vorteilhaft sein.To reduce NOx emissions in the region of the secondary flame in the edge region of the
Zum Erzeugen des elektrischen Feldes ist wiederum eine Spannungsquelle 23 vorgesehen, die über eine erste Leitung 26 mit dem Brenner 20 und über eine zweite Leitung 27 mit der Elektrode 24 verbunden ist. In diesem Ausführungsbeispiel ist die Elektrode 24 mechanisch mit dem Brenner 20 verbunden, wobei die Verbindung über ein Isolierstück 29 hergestellt wird.For generating the electric field, in turn, a
In den dargestellten Ausführungsformen gemäß
Claims (10)
Priority Applications (1)
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PL17020337T PL3385618T3 (en) | 2017-04-06 | 2017-08-07 | Method for flame alignment and use of a burner assembly for same |
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Application Number | Priority Date | Filing Date | Title |
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DE102017003388.9A DE102017003388A1 (en) | 2017-04-06 | 2017-04-06 | Flame rectification method and burner arrangement therefor |
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EP3385618A1 true EP3385618A1 (en) | 2018-10-10 |
EP3385618B1 EP3385618B1 (en) | 2019-11-13 |
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EP17020337.6A Active EP3385618B1 (en) | 2017-04-06 | 2017-08-07 | Method for flame alignment and use of a burner assembly for same |
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US (1) | US10955133B2 (en) |
EP (1) | EP3385618B1 (en) |
DE (1) | DE102017003388A1 (en) |
PL (1) | PL3385618T3 (en) |
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CN113426848B (en) * | 2021-07-05 | 2023-07-14 | 新疆宸轩机械设备科技有限公司 | Correcting device for machining steel structure with flexible operation |
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DE10137683A1 (en) * | 2001-08-01 | 2003-02-20 | Siemens Ag | Influencing flame combustion processes electrically, applies field penetrating regions where stabilizing- and pollutant-minimizing effect is displayed |
US20140234786A1 (en) * | 2013-02-21 | 2014-08-21 | Clearsign Combustion Corporation | Oscillating combustor with pulsed charger |
US20160018812A1 (en) | 2013-03-15 | 2016-01-21 | The Esab Group, Inc. | Work piece condition detection using flame electrical characteristics in oxy-fuel thermal processing equipment |
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US9702550B2 (en) * | 2012-07-24 | 2017-07-11 | Clearsign Combustion Corporation | Electrically stabilized burner |
WO2014160830A1 (en) * | 2013-03-28 | 2014-10-02 | Clearsign Combustion Corporation | Battery-powered high-voltage converter circuit with electrical isolation and mechanism for charging the battery |
US20150104748A1 (en) * | 2013-10-14 | 2015-04-16 | Clearsign Combustion Corporation | Electrodynamic combustion control (ecc) technology for biomass and coal systems |
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2017
- 2017-04-06 DE DE102017003388.9A patent/DE102017003388A1/en not_active Withdrawn
- 2017-08-07 PL PL17020337T patent/PL3385618T3/en unknown
- 2017-08-07 EP EP17020337.6A patent/EP3385618B1/en active Active
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2018
- 2018-03-29 US US15/939,838 patent/US10955133B2/en active Active
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DE2047585A1 (en) * | 1969-11-20 | 1971-05-27 | Zentrahnstitut fur Schweißtech nik der Deutschen Demokratischen Repu blik, χ 4030 Halle | Concentration of oxyacetylene flame |
US4111636A (en) * | 1976-12-03 | 1978-09-05 | Lawrence P. Weinberger | Method and apparatus for reducing pollutant emissions while increasing efficiency of combustion |
DE10137683A1 (en) * | 2001-08-01 | 2003-02-20 | Siemens Ag | Influencing flame combustion processes electrically, applies field penetrating regions where stabilizing- and pollutant-minimizing effect is displayed |
US20140234786A1 (en) * | 2013-02-21 | 2014-08-21 | Clearsign Combustion Corporation | Oscillating combustor with pulsed charger |
US20160018812A1 (en) | 2013-03-15 | 2016-01-21 | The Esab Group, Inc. | Work piece condition detection using flame electrical characteristics in oxy-fuel thermal processing equipment |
Also Published As
Publication number | Publication date |
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PL3385618T3 (en) | 2020-05-18 |
EP3385618B1 (en) | 2019-11-13 |
DE102017003388A1 (en) | 2018-10-11 |
US10955133B2 (en) | 2021-03-23 |
US20180292086A1 (en) | 2018-10-11 |
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