EP1864694B1 - Flame arrester and method for its production - Google Patents

Flame arrester and method for its production Download PDF

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Publication number
EP1864694B1
EP1864694B1 EP07007474A EP07007474A EP1864694B1 EP 1864694 B1 EP1864694 B1 EP 1864694B1 EP 07007474 A EP07007474 A EP 07007474A EP 07007474 A EP07007474 A EP 07007474A EP 1864694 B1 EP1864694 B1 EP 1864694B1
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EP
European Patent Office
Prior art keywords
contact points
metal
strip
coating
flame arrester
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EP07007474A
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German (de)
French (fr)
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EP1864694A1 (en
Inventor
Christoph Dipl.-Ing. Leinemann
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Leinemann GmbH and Co KG
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Leinemann GmbH and Co KG
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Priority to PL07007474T priority Critical patent/PL1864694T3/en
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    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C4/00—Flame traps allowing passage of gas but not of flame or explosion wave
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C4/00—Flame traps allowing passage of gas but not of flame or explosion wave
    • A62C4/02—Flame traps allowing passage of gas but not of flame or explosion wave in gas-pipes

Definitions

  • the invention relates to a method for producing a flame arrester insert from two jointly wound metal strips, of which a first metal strip is a smooth band and the second metal strip is a corrugated rib having a defined corrugation, which lie after contact with each other at contact points and between the contact points defined column for form a fluid passage.
  • the invention further relates to a flame arrester insert consisting of two jointly wound metal strips, of which a first metal strip is a smooth strip and second metal strip is a corrugated strip having a defined corrugation, so that they lie against one another at defined contact points and form defined gaps between the contact points for fluid passage wherein the two metal strips are directly adjacent to one another at the contact points and have an applied surface coating outside the contact points, which is a uniform common coating of the mutually facing surfaces of the metal strips near the contact points
  • Such flame arrester inserts are for example by DE 103 36 530 B3 known. Regularly, the two metal bands are spirally wound together around a central core.
  • the metal straps used to create the flame arrester must be made of high temperature stainless steel, not only to provide the necessary temperature resistance, but also to be resistant to aggressive media, e.g. not to corrode. Corrosion phenomena would change the defined fluid passage gaps and thus possibly pose a security risk.
  • the mechanical strength of flame arresters depends mainly on the friction value of the metal bands at the contact points.
  • the corrosion resistant materials used are regularly characterized by a very smooth, i. polished surface, so that the stability of a flame arrester of the type in question, especially for larger diameters, due to the relatively low friction value, may pose a problem. Possibly. Special devices must be procured in order to install the wound flame arrester inserts in a housing in which the inserts are kept stable. It has already been tried to increase the stability of the flame arrester inserts by axially brazed reinforcements. As a result, however, not only the effort higher, but also the handling in both the production and the maintenance of the flame arresters cumbersome.
  • a flame arrester set of the type mentioned above which is particularly intended for use in a duct on an internal combustion engine.
  • the insert consists of a cylindrical housing with a square (square) or round cross-section, in which alternately a smooth sheet and a corrugated sheet are stacked on each other.
  • the sheets form with their spaces between the corrugated sheet and the adjacent smooth sheets passage column in the flow direction of the gas.
  • an electrolytic deposition of a bonding layer is made after the composition of the flame arrester set, which extends to the entire surface the sheet metal or can be limited to the joints between the corrugated sheets and the adjacent smooth sheets.
  • tin is preferably deposited.
  • an electrolytic deposition of copper, cobalt, zinc, nickel and chromium can be provided.
  • the present invention is therefore based on the object, a flame arrester insert in such a way that it can be handled both simple and stable and can be formed with a high corrosion resistance.
  • the solution of this object is achieved according to the invention with a method of the type mentioned in that the two metal bands are provided after spiral winding from a coating solution without a current due to a chemical reaction with a surface coating such that the contact points between the bands are fixed by the coating.
  • the inventive method provides to wrap the flame arrester insert and then to provide the metal strips in the wound state with a surface coating.
  • the bands in the corrugations formed by the corrugations forming the fluid passage gaps are provided with a surface coating, but at the contact points are not adjacent to one another with a coated surface, but with the original material of the metal bands.
  • the adjoining metal strips on a common surface coating which sets the metal bands in the region of the contact point against each other. Since the wound flame arrester insert is provided with a huge number of such contact points, the common surface coating in the region of the contact points achieves a stable fixation of the adjacent metal strips and thereby gives the flame arrester insert high stability.
  • the surface coating is preferably wet-applied from a coating solution, that is, de-energized, that is, due to a chemical reaction. Preference is given to the coating by means of a coating solution containing nickel ions, which are reduced in the chemical reaction to nickel metal.
  • a coating solution containing nickel ions which are reduced in the chemical reaction to nickel metal.
  • phosphorus when phosphorus is contained in the coating solution, in a side reaction, the phosphorus content of the deposited layer can be controlled. Thus it is distributed by the AHC-Ober Jerusalem Kunststofftechnik GmbH, Kerpen, Germany, under the name DURNI-COAT ® especially a coating.
  • the coating solution contains nickel ions and hypophosphite ions. In the course of the reaction, the nickel ions are reduced to nickel metal and the hypophosphite ions are oxidized to orthophosphite.
  • the coating can be applied contour-true even with complicated structures with a uniform thickness, so that even edges and depressions and cavities can be uniformly coated.
  • This coating is therefore suitable for a defined compliance with the gap widths of the flame arrester insert, so that the gaps have a defined, sufficiently large passage cross section, which limits the flow rate.
  • the metal strips used for the production of the flame arrester can be made of a cheaper material, so that the cost of the surface coating already by the use of a cheaper metal for the metal bands can be at least partially compensated.
  • the metal strips are preferably wound spirally.
  • the realization of the present invention does not exclude that flame arrester inserts are produced, which have no corrugated strip over certain annular portions, so that the flame arrester insert is formed in these areas only by smooth metal band, so as to realize annular regions from which heat with a through the Omitting the column is derived high thermal conductivity.
  • An inventive flame arrester insert is usually spirally wound by the co-winding a trained as a smooth band first metal strip 1 with a wavy corrugated, a second metal strip 2 forming corrugated strip. Since a first metal strip of the next spiral layer adjoins the second metal strip again, the results in FIG. 1 shown in section sandwich situation in which the second band 2 is located as a corrugated strip between two turns of the first metal strip 1.
  • the second metal strip 2 rests with its wave crests and wave troughs on the upper or lower first metal strip 1 at contact points 3.
  • the flame arrester insert is provided with a surface coating 5.
  • the surface coating 5 forms on all freely accessible surfaces of the two metal bands 1, 2, but not at the contact points 3, since there the metal bands 1, 2 are directly adjacent to each other.
  • regions 6 which are immediately adjacent to the contact points 3 wedge-like forms occur between the two metal strips 1, 2 Interspaces which are filled by the surface coating 5, so that in these areas 6, the metal strips 1, 2 have a common surface coating 5.
  • This common surface coating causes the two metal strips 1, 2 to stick together in the regions 6 which are immediately adjacent to the contact points 3.
  • the flame arrester according to the invention can thus be produced extremely stable even with large diameters.
  • the use of a corrosion-resistant surface coating 5 means that a cheaper material can be used for the metal strips 1, 2.

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  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Gas Burners (AREA)
  • Fuses (AREA)
  • Laminated Bodies (AREA)
  • Building Environments (AREA)
  • Insulated Conductors (AREA)
  • Thermistors And Varistors (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

Producing a flame barrier insert by coiling a flat metal strip (1) and a corrugated metal strip (2) in a spiral so there are contact zones (3) and fluid-traversable gaps (4) between the two strips comprises providing the coil with a coating (5) to fix the contact zones. An independent claim is also included for a flame barrier insert as above.

Description

Die Erfindung betrifft ein Verfahren zur Herstellung eines Flammensperreinsatzes aus zwei gemeinsam aufgewickelten Metallbändern, von denen ein erstes Metallband ein glattes Band und das zweite Metallband ein eine definierte Riffelung aufweisendes Riffelband ist, die nach der Aufwicklung an Kontaktstellen aneinander liegen und zwischen den Kontaktstellen definierte Spalte für einen Fluiddurchtritt ausbilden.The invention relates to a method for producing a flame arrester insert from two jointly wound metal strips, of which a first metal strip is a smooth band and the second metal strip is a corrugated rib having a defined corrugation, which lie after contact with each other at contact points and between the contact points defined column for form a fluid passage.

Die Erfindung betrifft ferner einen Flammensperreinsatz, bestehend aus zwei gemeinsam aufgewickelten Metallbändern, von denen ein erstes Metallband ein glattes Band und zweites Metallband ein eine definierte Riffelung aufweisendes Riffelband ist, sodass sie an definierten Kontaktstellen aneinander liegen und zwischen den Kontaktstellen definierte Spalte für einen Fluiddurchtritt ausbilden, wobei die beiden Metallbänder an den Kontaktstellen unmittelbar aneinander liegen und außerhalb der Kontaktstellen eine aufgebrachte Oberflächenbeschichtung aufweisen, die nahe den Kontaktstellen eine einheitliche gemeinsame Beschichtung der zueinander zeigenden Oberflächen der Metallbänder istThe invention further relates to a flame arrester insert consisting of two jointly wound metal strips, of which a first metal strip is a smooth strip and second metal strip is a corrugated strip having a defined corrugation, so that they lie against one another at defined contact points and form defined gaps between the contact points for fluid passage wherein the two metal strips are directly adjacent to one another at the contact points and have an applied surface coating outside the contact points, which is a uniform common coating of the mutually facing surfaces of the metal strips near the contact points

Derartige Flammensperreinsätze sind beispielsweise durch DE 103 36 530 B3 bekannt. Regelmäßig werden die beiden Metallbänder gemeinsam spiralförmig um einen zentrischen Kern aufgewickelt.Such flame arrester inserts are for example by DE 103 36 530 B3 known. Regularly, the two metal bands are spirally wound together around a central core.

Die Herstellung muss dabei außerordentlich sorgfältig vorgenommen werden, damit die Fluiddurchtrittsspalte, insbesondere für hochexplosible Gase, eine definierte Spaltgröße nicht überschreiten, da andernfalls das sichere Löschen einer Flamme nicht gewährleistet wäre.The preparation must be made extremely carefully, so that the fluid passage gaps, especially for highly explosive gases, do not exceed a defined gap size, otherwise the safe extinction of a flame would not be guaranteed.

Die für die Erstellung des Flammensperreinsatzes verwendeten Metallbänder müssen aus hochwarmfesten Edelstahl bestehen, nicht nur um die notwendige Temperaturbeständigkeit zu haben, sondern um auch für aggressive Medien widerstandsfähig zu sein, d.h. nicht zu korrodieren. Korrosionserscheinungen würden die definierten Fluiddurchtrittsspalte verändern und so ggf. ein Sicherheitsrisiko darstellen.The metal straps used to create the flame arrester must be made of high temperature stainless steel, not only to provide the necessary temperature resistance, but also to be resistant to aggressive media, e.g. not to corrode. Corrosion phenomena would change the defined fluid passage gaps and thus possibly pose a security risk.

Die mechanische Festigkeit von Flammensperren hängt vor allem vom Reibungswert der Metallbänder an den Kontaktstellen ab.The mechanical strength of flame arresters depends mainly on the friction value of the metal bands at the contact points.

Die verwendeten korrosionsbeständigen Materialien zeichnen sich regelmäßig durch eine sehr glatte, d.h. polierte, Oberfläche aus, sodass die Stabilität einer Flammensperre der hier in Frage stehenden Art, insbesondere bei größeren Durchmessern, aufgrund des relativ geringen Reibungswerts, ein Problem darstellen kann. Ggf. müssen besondere Vorrichtungen beschaffen werden, um die gewickelten Flammensperreinsätze in ein Gehäuse einbauen zu können, in dem die Einsätze stabil gehalten werden. Es ist bereits versucht worden, durch axial aufgelötete Verstärkungen die Stabilität der Flammensperreinsätze zu erhöhen. Hierdurch wird jedoch nicht nur der Aufwand höher, sondern auch die Handhabung sowohl bei der Herstellung als auch beim Warten der Flammensperren umständlicher.The corrosion resistant materials used are regularly characterized by a very smooth, i. polished surface, so that the stability of a flame arrester of the type in question, especially for larger diameters, due to the relatively low friction value, may pose a problem. Possibly. Special devices must be procured in order to install the wound flame arrester inserts in a housing in which the inserts are kept stable. It has already been tried to increase the stability of the flame arrester inserts by axially brazed reinforcements. As a result, however, not only the effort higher, but also the handling in both the production and the maintenance of the flame arresters cumbersome.

Aus der US 2,333,567 ist ein Flammensperreinsatz der oben erwähnten Art bekannt, der insbesondere zum Einsatz in eine Leitung an einem Verbrennungsmotor vorgesehen ist. Der Einsatz besteht aus einem zylindrischen Gehäuse mit einem eckigen (quadratischen) oder runden Querschnitt, in dem abwechselnd ein glattes Blech und ein gewelltes Blech aufeinander gestapelt sind. Die Bleche bilden mit ihren Zwischenräumen zwischen dem gewellten Blech und den benachbarten glatten Blechen Durchtrittsspalte in Strömungsrichtung des Gases. Zur Stabilisierung dieser Anordnung wird nach der Zusammenstellung des Flammensperreinsatzes eine elektrolytische Abscheidung einer Verbindungsschicht vorgenommen, die sich auf die gesamte Oberfläche der Bleche beziehen oder auf die Verbindungsstellen zwischen den gewellten Blechen und den benachbarten glatten Blechen beschränken kann. Bevorzugt wird dabei Zinn abgeschieden. Alternativ kann auch eine elektrolytische Abscheidung von Kupfer, Kobalt, Zink, Nickel und Chrom vorgesehen werden.From the US 2,333,567 For example, there is known a flame arrester set of the type mentioned above which is particularly intended for use in a duct on an internal combustion engine. The insert consists of a cylindrical housing with a square (square) or round cross-section, in which alternately a smooth sheet and a corrugated sheet are stacked on each other. The sheets form with their spaces between the corrugated sheet and the adjacent smooth sheets passage column in the flow direction of the gas. To stabilize this arrangement, an electrolytic deposition of a bonding layer is made after the composition of the flame arrester set, which extends to the entire surface the sheet metal or can be limited to the joints between the corrugated sheets and the adjacent smooth sheets. In this case, tin is preferably deposited. Alternatively, an electrolytic deposition of copper, cobalt, zinc, nickel and chromium can be provided.

Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, einen Flammensperreinsatz so auszubilden, dass er sich sowohl einfach und stabil handhaben lässt als auch mit einer hohen Korrosionsbeständigkeit ausgebildet werden kann.The present invention is therefore based on the object, a flame arrester insert in such a way that it can be handled both simple and stable and can be formed with a high corrosion resistance.

Die Lösung dieser Aufgabe gelingt erfindungsgemäß mit einem Verfahren der eingangs erwähnten Art dadurch, dass die beiden Metallbänder nach der spiralförmigen Aufwickelung aus einer Beschichtungslösung stromlos aufgrund einer chemischen Reaktion derart mit einer Oberflächenbeschichtung versehen werden, dass die Kontaktstellen zwischen den Bändern durch die Beschichtung fixiert werden.The solution of this object is achieved according to the invention with a method of the type mentioned in that the two metal bands are provided after spiral winding from a coating solution without a current due to a chemical reaction with a surface coating such that the contact points between the bands are fixed by the coating.

In ungewöhnlicher Weise sieht das erfindungsgemäße Verfahren vor, den Flammensperreinsatz zu wickeln und dann die Metallbänder im aufgewickelten Zustand mit einer Oberflächenbeschichtung zu versehen. Dies hat zur Folge, dass die Bänder in den durch Riffelung gebildeten Zwischenräumen, die die Fluiddurchtrittsspalte bilden, mit einer Oberflächenbeschichtung versehen werden, jedoch an den Kontaktstellen nicht mit einer beschichteten Oberfläche aneinander liegen, sondern mit dem originalen Material der Metallbänder. In unmittelbarer Nähe der Kontaktstellen weisen die aneinander anliegenden Metallbänder eine gemeinsame Oberflächenbeschichtung auf, die die Metallbänder im Bereich der Kontaktstelle gegeneinander festlegt. Da der aufgewickelte Flammensperreinsatz mit einer riesigen Anzahl derartiger Kontaktstellen versehen ist, wird durch die gemeinsame Oberflächenbeschichtung im Bereich der Kontaktstellen eine stabile Fixierung der aneinander liegenden Metallbänder erreicht und dadurch dem Flammensperreinsatz eine hohe Stabilität verliehen. Die Oberflächenbeschichtung wird vorzugsweise aus einer Beschichtungslösung nass aufgebracht, und zwar stromlos, also aufgrund einer chemischen Reaktion. Bevorzugt ist dabei die Beschichtung mittels einer Beschichtungslösung, die Nickelionen enthält, die in der chemischen Reaktion zu Nickelmetall reduziert werden. Wenn zusätzlich Phosphor in der Beschichtungslösung enthalten ist, kann in einer Nebenreaktion der Phosphorgehalt der abgeschiedenen Schicht gesteuert werden. Es eignet sich somit insbesondere eine Beschichtung, die von der AHC-Oberflächentechnik GmbH, Kerpen, Bundesrepublik Deutschland, unter der Bezeichnung DURNI-COAT® vertrieben wird. Die Beschichtungslösung enthält Nickelionen und Hypophosphit-Ionen. Im Verlaufe der Reaktion werden die Nickelionen zu Nickelmetall reduziert und die Hypophosphit-Ionen zu Orthophosphit oxidiert. Die Beschichtung lässt sich auch bei komplizierten Strukturen mit einer gleichmäßigen Dicke konturentreu aufbringen, sodass auch Kanten und Vertiefungen und Hohlräume gleichmäßig beschichtet werden können. Diese Beschichtung eignet sich daher für eine definierte Einhaltung der Spaltweiten des Flammensperreinsatzes, sodass die Spalte einen definierten, ausreichend großen Durchtrittsquerschnitt aufweisen, der die Durchströmungsmenge begrenzt.Unusually, the inventive method provides to wrap the flame arrester insert and then to provide the metal strips in the wound state with a surface coating. As a result, the bands in the corrugations formed by the corrugations forming the fluid passage gaps are provided with a surface coating, but at the contact points are not adjacent to one another with a coated surface, but with the original material of the metal bands. In the immediate vicinity of the contact points, the adjoining metal strips on a common surface coating, which sets the metal bands in the region of the contact point against each other. Since the wound flame arrester insert is provided with a huge number of such contact points, the common surface coating in the region of the contact points achieves a stable fixation of the adjacent metal strips and thereby gives the flame arrester insert high stability. The surface coating is preferably wet-applied from a coating solution, that is, de-energized, that is, due to a chemical reaction. Preference is given to the coating by means of a coating solution containing nickel ions, which are reduced in the chemical reaction to nickel metal. In addition, when phosphorus is contained in the coating solution, in a side reaction, the phosphorus content of the deposited layer can be controlled. Thus it is distributed by the AHC-Oberflächentechnik GmbH, Kerpen, Germany, under the name DURNI-COAT ® especially a coating. The coating solution contains nickel ions and hypophosphite ions. In the course of the reaction, the nickel ions are reduced to nickel metal and the hypophosphite ions are oxidized to orthophosphite. The coating can be applied contour-true even with complicated structures with a uniform thickness, so that even edges and depressions and cavities can be uniformly coated. This coating is therefore suitable for a defined compliance with the gap widths of the flame arrester insert, so that the gaps have a defined, sufficiently large passage cross section, which limits the flow rate.

Die oben erwähnte Aufgabe wird somit ferner mit einem Flammensperreinsatz der eingangs erwähnten Art dadurch gelöst, dass die Oberflächenbeschichtung aus metallischem Nickel mit einem zusätzlichen Gehalt an Phosphor besteht.The above-mentioned object is thus further achieved with a flame arrester set of the type mentioned above in that the surface coating consists of metallic nickel with an additional content of phosphorus.

Aufgrund der durch die erfindungsgemäße Oberflächenbeschichtung erzielte hohe Stabilität und aufgrund der Oberflächenbeschichtung, die selbst eine hohe Korrosionsbeständigkeit aufweist, können die für die Herstellung des Flammensperreinsatzes verwendeten Metallbänder aus einem preiswerteren Material erstellt werden, sodass die Kosten für die Oberflächenbeschichtung bereits durch die Verwendung eines preiswerteren Metalls für die Metallbänder zumindest teilweise kompensiert werden können.Due to the high stability achieved by the surface coating of the invention and due to the surface coating, which itself has a high corrosion resistance, the metal strips used for the production of the flame arrester can be made of a cheaper material, so that the cost of the surface coating already by the use of a cheaper metal for the metal bands can be at least partially compensated.

Bei dem erfindungsgemäßen Flammensperreinsatz sind die Metallbänder vorzugsweise spiralförmig aufgewickelt.In the flame arrester insert according to the invention, the metal strips are preferably wound spirally.

Die Verwirklichung der vorliegenden Erfindung schließt nicht aus, dass Flammensperreinsätze hergestellt werden, die über gewisse ringförmige Abschnitte kein Riffelband aufweisen, sodass der Flammensperreinsatz in diesen Bereichen nur durch glattes Metallband gebildet wird, um so ringförmige Bereiche zu realisieren, aus denen Wärme mit einer durch das Fortlassen der Spalte hohen Wärmeleitfähigkeit abgeleitet wird.The realization of the present invention does not exclude that flame arrester inserts are produced, which have no corrugated strip over certain annular portions, so that the flame arrester insert is formed in these areas only by smooth metal band, so as to realize annular regions from which heat with a through the Omitting the column is derived high thermal conductivity.

die Erfindung wird anhand der beigefügten Zeichnung näher erläutert. Es zeigen:

Figur 1
einen schematischen Schnitt durch eine erfindungsgemäße Anordnung eines Riffelbandes zwischen zwei glatten Bändern;
Figur 2
eine vergrößerte Darstellung des Details X aus Figur 1.
The invention will be explained in more detail with reference to the accompanying drawings. Show it:
FIG. 1
a schematic section through an inventive arrangement of a corrugated strip between two smooth bands;
FIG. 2
an enlarged view of the detail X from FIG. 1 ,

Ein erfindungsgemäßer Flammensperreinsatz wird üblicherweise durch das gemeinsame Aufwickeln eines als glattes Band ausgebildeten ersten Metallbandes 1 mit einem wellenförmig geriffelten, ein zweites Metallband 2 bildenden Riffelband spiralförmig aufgewickelt. Da sich an das zweite Metallband wieder ein erstes Metallband der nächsten spiralförmigen Lage anschließt, ergibt sich die in Figur 1 im Schnitt dargestellte Sandwich-Situation, in der sich das zweite Band 2 als Riffelband zwischen zwei Windungen des ersten Metallbandes 1 befindet.An inventive flame arrester insert is usually spirally wound by the co-winding a trained as a smooth band first metal strip 1 with a wavy corrugated, a second metal strip 2 forming corrugated strip. Since a first metal strip of the next spiral layer adjoins the second metal strip again, the results in FIG. 1 shown in section sandwich situation in which the second band 2 is located as a corrugated strip between two turns of the first metal strip 1.

Das zweite Metallband 2 liegt mit seinen Wellenbergen und Wellentälern an dem oberen bzw. unteren ersten Metallband 1 an Kontaktstellen 3 an.The second metal strip 2 rests with its wave crests and wave troughs on the upper or lower first metal strip 1 at contact points 3.

Zwischen der Welle des zweiten Metallbandes 2 und den beiden Kontaktstellen 3, die diesen Wellenbereich auf derselben Seite des ersten Metallbandes 1 begrenzen, ist ein definierter Querschnitt eines Durchtrittsspalts 4 ausgebildet. Auf diese Weise ist an dem Flammensperreinsatz eine Vielzahl von Fluid-Durchtrittsspalten 4 über den Querschnitt des Flammensperreinsatzes realisiert.Between the shaft of the second metal strip 2 and the two contact points 3, which bound this waveband on the same side of the first metal strip 1, a defined cross-section of a passage gap 4 is formed. In this way, a plurality of fluid passage columns 4 on the cross-section of the flame arrester insert is realized on the flame arrester insert.

In diesem Zustand wird der Flammensperreinsatz mit einer Oberflächenbeschichtung 5 versehen.In this state, the flame arrester insert is provided with a surface coating 5.

Wie insbesondere die vergrößerte Darstellung der Figur 2 verdeutlicht, bildet sich die Oberflächenbeschichtung 5 an allen frei zugänglichen Oberflächen der beiden Metallbänder 1, 2 aus, nicht jedoch an den Kontaktstellen 3, da dort die Metallbänder 1, 2 unmittelbar aneinander liegen. In Bereichen 6, die den Kontaktstellen 3 unmittelbar benachbart sind, entstehen zwischen den beiden Metallbändern 1, 2 keilartige Zwischenräume, die durch die Oberflächenbeschichtung 5 ausgefüllt werden, sodass in diesen Bereichen 6 die Metallbänder 1, 2 eine gemeinsame Oberflächenbeschichtung 5 aufweisen. Diese gemeinsame Oberflächenbeschichtung bewirkt ein Aneinanderhaften der beiden Metallbänder 1, 2 in den Bereichen 6, die den Kontaktstellen 3 unmittelbar benachbart sind.As in particular the enlarged view of FIG. 2 illustrates, the surface coating 5 forms on all freely accessible surfaces of the two metal bands 1, 2, but not at the contact points 3, since there the metal bands 1, 2 are directly adjacent to each other. In regions 6 which are immediately adjacent to the contact points 3, wedge-like forms occur between the two metal strips 1, 2 Interspaces which are filled by the surface coating 5, so that in these areas 6, the metal strips 1, 2 have a common surface coating 5. This common surface coating causes the two metal strips 1, 2 to stick together in the regions 6 which are immediately adjacent to the contact points 3.

Durch diese gemeinsame Beschichtung werden die beiden Bänder 1, 2 im Bereich der Kontaktstellen 3 zueinander fixiert. Da ein Flammensperreinsatz über eine riesige Anzahl von Kontaktstellen 3 verfügt, wird auf diese Weise eine sehr hohe Stabilität der relativen Lage der Metallbänder 1, 2 zueinander erzielt, sodass nicht die Gefahr besteht, dass aufgrund guter und reibungsarmer Oberflächen der Metallbänder 1, 2 der aufgewickelte Flammensperreinsatz, insbesondere wenn er einen größeren Durchmesser aufweist, dadurch auseinanderfällt, dass sich die Metallbänder 1, 2 relativ zueinander bewegen und den Halt der Spiralwicklung zueinander aufgrund ihres Gewichts verlieren.As a result of this joint coating, the two strips 1, 2 are fixed to one another in the region of the contact points 3. Since a flame arrester has a huge number of contact points 3, a very high stability of the relative position of the metal bands 1, 2 is achieved in this way, so there is no risk that due to good and low-friction surfaces of the metal bands 1, 2 of the wound Flame arrester insert, in particular if it has a larger diameter, thereby falling apart, that move the metal bands 1, 2 relative to each other and lose the grip of the spiral winding to each other due to their weight.

Der erfindungsgemäße Flammensperreinsatz lässt sich somit außerordentlich stabil auch mit großen Durchmessern herstellen. Die Verwendung einer korrosionsbeständigen Oberflächenbeschichtung 5 führt dazu, dass für die Metallbänder 1, 2 ein preiswerteres Material verwendet werden kann.The flame arrester according to the invention can thus be produced extremely stable even with large diameters. The use of a corrosion-resistant surface coating 5 means that a cheaper material can be used for the metal strips 1, 2.

Claims (5)

  1. Process for the production of a flame arrester insert from two metal strips (1, 2) wound together, of which a first metal strip (1) is a smooth strip and the second metal strip (2) is a corrugated strip having defined corrugation, which, after being wound, rest on each other at contact points (3) and, between the contact points (3), form defined gaps (4) for the passage of a fluid, where, after the spiral winding, the two metal strips (1, 2) are provided with a surface coating (5) in such a way that the contact points (3) between the strips (1, 2) are fixed by the coating (5) characterized in that the surface coating is applied without electric power on the basis of a chemical reaction from a coating solution.
  2. Process according to Claim 1, characterized in that the surface coating (5) is applied by means of reduction of nickel ions contained in the coating solution to form nickel metal.
  3. Process according to Claim 2, characterized in that the coating solution used is a solution additionally containing phosphorus.
  4. Process according to one of Claims 1 to 3, characterized in that the metal strips (1, 2) are wound together spirally.
  5. Flame arrester insert comprising two metal strips (1, 2) wound together, of which a first metal strip (1) is a smooth strip and the second metal strip (2) is a corrugated strip having defined corrugation, so that they rest on each other at defined contact points (3) and, between the contact points (3), form defined gaps (4) for the passage of a fluid, where the two metal strips (1, 2) rest directly on each other at the contact points (3) and, outside the contact points (3), have an applied surface coating (5) which, close to the contact points, is a uniform joint coating of the surfaces of the metal strips (1, 2) that point towards each other, characterized in that the surface coating (5) consists of metallic nickel having an additional content of phosphorus.
EP07007474A 2006-06-06 2007-04-12 Flame arrester and method for its production Not-in-force EP1864694B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL07007474T PL1864694T3 (en) 2006-06-06 2007-04-12 Flame arrester and method for its production

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006026510A DE102006026510B3 (en) 2006-06-06 2006-06-06 Production of flame barrier insert by coiling flat metal strip and corrugated metal strip in spiral comprises providing coil with coating to fix contact zones between strips

Publications (2)

Publication Number Publication Date
EP1864694A1 EP1864694A1 (en) 2007-12-12
EP1864694B1 true EP1864694B1 (en) 2011-06-01

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EP07007474A Not-in-force EP1864694B1 (en) 2006-06-06 2007-04-12 Flame arrester and method for its production

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US (1) US8092213B2 (en)
EP (1) EP1864694B1 (en)
JP (1) JP5043510B2 (en)
KR (1) KR20070116726A (en)
AT (1) ATE511409T1 (en)
BR (1) BRPI0702339A (en)
CA (1) CA2588403C (en)
DE (1) DE102006026510B3 (en)
DK (1) DK1864694T3 (en)
HK (1) HK1111643A1 (en)
NO (1) NO20072014L (en)
PL (1) PL1864694T3 (en)
TW (1) TWI361115B (en)

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DE102006026779A1 (en) 2006-06-07 2007-12-20 Leinemann Gmbh & Co. Kg Flame arrestor arrangement and method for introducing bores into a flame arrester arrangement
DE102009018422A1 (en) * 2009-04-22 2010-11-04 Emitec Gesellschaft Für Emissionstechnologie Mbh Process for producing a coated honeycomb body
US10371408B2 (en) 2013-07-15 2019-08-06 Carrier Corporation Flame arrestors for use with a HVAC/R system
US10767859B2 (en) * 2014-08-19 2020-09-08 Adler Hot Oil Service, LLC Wellhead gas heater
US10174941B2 (en) * 2016-09-07 2019-01-08 Selas Heat Technology Company Llc Ribbon pack for gas burners
RU189242U1 (en) * 2018-09-21 2019-05-16 Общество с ограниченной ответственностью "Промышленное оборудование" Fire extinguisher
GB201816489D0 (en) 2018-10-10 2018-11-28 Elmac Tech Limited Flame Arrester Element
CN112139816B (en) * 2020-08-05 2022-03-22 中石化宁波工程有限公司 Corrugated plate type flame arrester filter element winding device

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US20070279825A1 (en) 2007-12-06
CA2588403C (en) 2013-10-22
CA2588403A1 (en) 2007-12-06
HK1111643A1 (en) 2008-08-15
ATE511409T1 (en) 2011-06-15
US8092213B2 (en) 2012-01-10
TW200800435A (en) 2008-01-01
JP2007327737A (en) 2007-12-20
DK1864694T3 (en) 2011-08-29
JP5043510B2 (en) 2012-10-10
DE102006026510B3 (en) 2007-05-24
NO20072014L (en) 2007-12-07
BRPI0702339A (en) 2008-02-19
EP1864694A1 (en) 2007-12-12
TWI361115B (en) 2012-04-01
KR20070116726A (en) 2007-12-11
PL1864694T3 (en) 2011-10-31

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