EP1065914B1 - Plasma spray device - Google Patents

Plasma spray device Download PDF

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Publication number
EP1065914B1
EP1065914B1 EP00810376A EP00810376A EP1065914B1 EP 1065914 B1 EP1065914 B1 EP 1065914B1 EP 00810376 A EP00810376 A EP 00810376A EP 00810376 A EP00810376 A EP 00810376A EP 1065914 B1 EP1065914 B1 EP 1065914B1
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EP
European Patent Office
Prior art keywords
torch
contact elements
shank
quick
spraying device
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
EP00810376A
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German (de)
French (fr)
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EP1065914A1 (en
Inventor
Markus Müller
Christian Märki
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Oerlikon Metco AG
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Sulzer Metco AG
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Publication of EP1065914A1 publication Critical patent/EP1065914A1/en
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
    • H05H1/00—Generating plasma; Handling plasma
    • H05H1/24—Generating plasma
    • H05H1/26—Plasma torches
    • H05H1/32—Plasma torches using an arc
    • H05H1/34—Details, e.g. electrodes, nozzles
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
    • H05H1/00—Generating plasma; Handling plasma
    • H05H1/24—Generating plasma
    • H05H1/26—Plasma torches
    • H05H1/32—Plasma torches using an arc
    • H05H1/34—Details, e.g. electrodes, nozzles
    • H05H1/3478—Geometrical details

Definitions

  • the invention relates to a trained according to the preamble of claim 1 Plasma injector.
  • Plasma spray devices with a radially emerging from the burner head are particularly suitable for coating borehole or pipe walls.
  • walls of pipes and bores with small diameter, for example from 40 mm must be able to coat the plasma spraying devices and especially the burner heads are very compact be designed.
  • the thermal increases Load on the burner head which results in increased wear of certain torch head parts such as the cathode and the usual trained as a nozzle noticeable.
  • the lifespan of the above Elements is also particularly bad heat dissipation Coating of bore or pipe walls negatively affected.
  • the entire burner head as a modular component, its contact elements and / or the insulating body the end face to be directed towards the burner shaft protrude from the burner head and with recesses and / or elevations are provided on which to engage quick-release means arranged on the burner shaft the burner head can be replaced quickly and easily.
  • no additional parts such as e.g. Clamping pin or the like to be provided so that this on the burner shaft can be fixed and removed again.
  • Preferred embodiments of the plasma spraying device are in the dependent ones Claims 2 to 9 circumscribed
  • FIGs 1a and 1b show the burner head 1 and Figures 2a and 2b the Brenner shaft 2 each in two different, not to scale views. Since the basic structure and mode of operation of generic plasma spraying devices is known, is only related to the following essential features of the invention.
  • the burner head 1 exists of an anode base body 4, a cathode base body 6 and one in between Insulated body 5 inserted, which electrically opposite the anode base body 4 the cathode base body 6 isolated.
  • the anode base body 4 is with a Anode nozzle 10 and the cathode base body 6 are provided with a cathode 11, wherein both the anode nozzle 10 and the cathode 11 transverse to the longitudinal central axis of the burner head 1 are inserted in these, so that a generated plasma jet radially emerges from the burner head 1.
  • Both the anode base body 4 and the Cathode base bodies 6 are made of an electrically highly conductive material such as, for example Made of brass.
  • the anode nozzle 10 is electrically connected to the Anode base body 4 and the cathode 11 electrically with the cathode base body 6 connected.
  • the coating powder is supplied via a tube 13, which is arranged on the outside of the burner head 1. Since the burner head 1 very is compact, the plasma spray device is particularly suitable for Coating of bore and pipe walls with a diameter of approx. 40mm.
  • a large number of channels 15 are provided for supplying the operating and cooling media, which are not dealt with in detail.
  • O-rings (not shown) are provided.
  • One for the supply of the coating material The hose provided can be pushed onto the tube 13 and be subtracted from it.
  • Both the anode base body 4 is for the power supply of the burner head 1 as well as the cathode base body 6, each with an electrical contact element 7, 8 Mistake.
  • the insulating body 5 has an extension 9, which is between the extends two contact elements 7, 8 and insulates them electrically from one another. Both the contact elements 7, 8 and the extension 9 of the insulating body 5 protrude the end face S of the burner head 1 to be directed toward the burner shaft 2. Both Contact elements 7, 8 are provided with lateral recesses 17, 18 on the will be discussed in more detail below.
  • the extension 9 of the insulating body 5 protrudes the two contact elements 7, 8 both laterally and forwards.
  • the burner shaft 2 consists essentially of two spaced tubes 20, 21, through the interior of which the media required for the operation of the burner head 1 are led. Between the two tubes 20, 21 are two quick release levers 23 arranged, each provided with a slot 25 on the front Have eccentric 24. On the end face S1 facing the burner head 1 the two tubes 20, 21 are each provided with a connecting element 27, 28. Both Connection elements 27, 28 each have a recess 30, 31 for receiving the Contact elements 7, 8 of the burner head 1.
  • FIG. 3a shows burner shaft 2 with the quick-release levers 23 in the starting position, in which the burner head 1 can be attached to the burner shaft 2.
  • the quick release lever 23 To the contact elements 7 of the burner head 1 in the corresponding recesses 30 of the burner shaft 2 inserted and the quick release lever 23, as in the Fig. 3b shown, pressed upwards.
  • the eccentrics 24 of the quick-release levers engage 23 into the recesses 17 of the contact elements 7.
  • the eccentrics 24 are designed so that when the respective pivot lever 23 is pivoted the eccentric 24 pulls the contact element 7 in the direction of the burner shaft 2.
  • 3c shows the swivel lever 23 in the closed operative position, in which the burner head 1 fixed to the burner shaft 2 and the electrical connection between the burner shaft 2 and burner head 1 is ensured and also the channels of the burner shaft 2 are connected to those of the burner head 1.
  • the o-rings ensures that the channels are securely sealed and that the burner head 1 rests with a certain preload on the burner shaft 2, whereby the The swivel lever 23 remains securely in the active position.
  • the burner head 1 Due to the modular design of the burner head 1 and the training described the contact elements 7, 8 and the quick release lever 23, on the one hand possible, the burner head 1 - and of course the potential wear parts such as anode nozzle 10 or cathode 11 - can be replaced quickly and easily. By doing the contact elements 7, 8 in addition to their actual task of power transmission can also be used as a draw bolt, the burner head 1 can very much be kept compact. Due to the specific training of the two contact elements 7, 8 extending extension 9 of the insulating body 5, which the contact elements 7, 8 protrudes laterally and in the longitudinal direction, a long Isolation gap formed between the two contact elements 7, 8, so that the two Contact elements 7, 8 are securely insulated from each other.
  • the previous embodiment is by no means conclusive Character should have, but that within the scope of the claims defined scope of protection of previous embodiment different designs of the plasma spray device are possible. So could, for example, the contact elements instead of recesses with elevations be provided on which the quick-release means arranged on the burner shaft can attack.
  • the insulating body or its extension could also be used be provided with recesses and / or surveys on which the burner can attack arranged quick release.

Description

Die Erfindung betrifft eine gemäss dem Oberbegriff des Anspruchs 1 ausgebildete Plasmaspritzvorrichtung.The invention relates to a trained according to the preamble of claim 1 Plasma injector.

Plasmaspritzvorrichtungen mit einem radial aus dem Brennerkopf austretenden Plasmastrahl eignen sich insbesondere zum Beschichten von Bohrungs- oder Rohrwandungen. Um auch Wandungen von Rohren und Bohrungen mit vergleichsweise kleinem Durchmesser, beispielsweise ab 40 mm, beschichten zu können, müssen die Plasmaspritzvorrichtungen und insbesondere auch die Brennerköpfe sehr kompakt ausgestaltet werden. Bei der Reduktion der Grösse der Plasmaspritzvorrichtungen ergeben sich jedoch verschiedene Probleme. Beispielsweise steigt die thermische Belastung des Brennerkopfs an, was sich in einem erhöhten Verschleiss von bestimmten Brennerkopf-Teilen wie beispielsweise der Kathode und der üblicherweise als Düse ausgebildete Anode bemerkbar macht. Die Lebensdauer der genannten Elemente wird insbesondere auch durch die schlechte Wärmeabfuhr beim Beschichten von Bohrungs- oder Rohrwandungen negativ beeinflusst.Plasma spray devices with a radially emerging from the burner head Plasma jets are particularly suitable for coating borehole or pipe walls. To also compare walls of pipes and bores with small diameter, for example from 40 mm, must be able to coat the plasma spraying devices and especially the burner heads are very compact be designed. In reducing the size of the plasma sprayers however, there are various problems. For example, the thermal increases Load on the burner head, which results in increased wear of certain torch head parts such as the cathode and the usual trained as a nozzle noticeable. The lifespan of the above Elements is also particularly bad heat dissipation Coating of bore or pipe walls negatively affected.

Es ist daher die Aufgabe der Erfindung, eine gemäss dem Oberbegriff des Anspruchs 1 ausgestaltete Plasmaspritzvorrichtung derart weiterzubilden, dass deren Verschleissteile schnell und einfach austauschbar sind, wobei der kompakte Aufbau der Plasmaspritzvorrichtung nicht beeinträchtigt werden soll.It is therefore the object of the invention, one according to the preamble of the claim 1 designed plasma spraying device in such a way that its wearing parts are quick and easy to replace, the compact structure of the Plasma spraying device should not be affected.

Diese Aufgabe wird durch die im Kennzeichen des Anspruchs 1 aufgeführten Merkmale gelöst.This object is achieved by the features listed in the characterizing part of claim 1 solved.

Indem der gesamte Brennerkopf als modulares Bauteil ausgebildet ist, dessen Kontaktelemente und/oder der Isolierkörper die zum Brennerschaft zu richtende Stirnseite des Brennerkopfs überragen und mit Ausnehmungen und/oder Erhebungen versehen sind, an welchen am Brennerschaft angeordnete Schnellspannmittel anzugreifen bestimmt sind, kann der Brennerkopf schnell und einfach ausgetauscht werden. Zudem brauchen am Brennerkopf selber keine zusätzlichen Teile wie z.b. Spannzapfen oder dergleichen vorgesehen zu werden, damit dieser am Brennerschaft fixiert und auch wieder entfernt werden kann.By designing the entire burner head as a modular component, its contact elements and / or the insulating body the end face to be directed towards the burner shaft protrude from the burner head and with recesses and / or elevations are provided on which to engage quick-release means arranged on the burner shaft the burner head can be replaced quickly and easily. In addition, no additional parts such as e.g. Clamping pin or the like to be provided so that this on the burner shaft can be fixed and removed again.

Bevorzugte Ausführungsformen der Plasmaspritzvorrichtung sind in den abhängigen Ansprüchen 2 bis 9 umschrieben Preferred embodiments of the plasma spraying device are in the dependent ones Claims 2 to 9 circumscribed

Nachfolgend wird ein bevorzugtes Ausführungsbeispiel der Erfindung anhand von Zeichnungen näher erläutert. In diesen Zeichnungen zeigt:

Fig. 1a
eine Seitenansicht des Brennerkopfs;
Fig. 1b
eine Ansicht auf die dem Brennerschaft zuzuwendenden Stirnseite des Brennerkopfs;
Fig. 2a
eine Seitenansicht des Brennerschafts;
Fig. 2b
eine Ansicht auf die dem Brennerkopf zuzuwendende Stirnseite des Brennerschafts;
Fig. 3a bis 3c
eine Draufsicht auf den Brennerkopf und den Vorderteil des Brennerschafts während verschiedenen Phasen beim Befestigen des Brennerkopfs am Brennerschaft;
A preferred exemplary embodiment of the invention is explained in more detail below with reference to drawings. In these drawings:
Fig. 1a
a side view of the burner head;
Fig. 1b
a view of the end of the burner head facing the burner shaft;
Fig. 2a
a side view of the burner shaft;
Fig. 2b
a view of the end of the burner shaft facing the burner head;
3a to 3c
a plan view of the burner head and the front part of the burner shaft during different phases in attaching the burner head to the burner shaft;

Die Figuren 1a und 1b zeigen den Brennerkopf 1 und die Figuren 2a und 2b den Brennerschaft 2 jeweils in zwei verschiedenen, nicht massstabsgetreuen Ansichten. Da der grundsätzliche Aufbau und die Wirkungsweise von gattungsgemässen Plasmaspritzvorrichtungen bekannt ist, wird nachfolgend nur auf die im Zusammenhang mit der Erfindung wesentlichen Merkmale eingegangen. Der Brennerkopf 1 besteht aus einem Anodenbasiskörper 4, einem Kathodenbasiskörper 6 und einem dazwischen eingefügten Isolierkörper 5, welcher den Anodenbasiskörper 4 elektrisch gegenüber dem Kathodenbasiskörper 6 isoliert. Der Anodenbasiskörper 4 ist mit einer Anodendüse 10 und der Kathodenbasiskörper 6 mit einer Kathode 11 versehen, wobei sowohl die Anodendüse 10 wie auch die Kathode 11 quer zur Längsmittelachse des Brennerkopfs 1 in diesen eingesetzt sind, so dass ein erzeugter Plasmastrahl radial aus dem Brennerkopf 1 austritt. Sowohl der Anodenbasiskörper 4 wie auch der Kathodenbasiskörper 6 sind aus einem elektrisch gut leitenden Material wie beispielsweise Messing gefertigt. Dabei ist die Anodendüse 10 elektrisch mit dem Anodenbasiskörper 4 und die Kathode 11 elektrisch mit dem Kathodenbasiskörper 6 verbunden. Die Zufuhr des Beschichtungspulvers erfolgt über eine Rohr 13, welches auf der Aussenseite des Brennerkopfs 1 angeordnet ist. Da der Brennerkopf 1 sehr kompakt ausgebildet ist, eignet sich die Plasmaspritzvorrichtung insbesondere zum Beschichten von Bohrungs- und Rohrwandungen ab einem Durchmesser von ca. 40mm.Figures 1a and 1b show the burner head 1 and Figures 2a and 2b the Brenner shaft 2 each in two different, not to scale views. Since the basic structure and mode of operation of generic plasma spraying devices is known, is only related to the following essential features of the invention. The burner head 1 exists of an anode base body 4, a cathode base body 6 and one in between Insulated body 5 inserted, which electrically opposite the anode base body 4 the cathode base body 6 isolated. The anode base body 4 is with a Anode nozzle 10 and the cathode base body 6 are provided with a cathode 11, wherein both the anode nozzle 10 and the cathode 11 transverse to the longitudinal central axis of the burner head 1 are inserted in these, so that a generated plasma jet radially emerges from the burner head 1. Both the anode base body 4 and the Cathode base bodies 6 are made of an electrically highly conductive material such as, for example Made of brass. The anode nozzle 10 is electrically connected to the Anode base body 4 and the cathode 11 electrically with the cathode base body 6 connected. The coating powder is supplied via a tube 13, which is arranged on the outside of the burner head 1. Since the burner head 1 very is compact, the plasma spray device is particularly suitable for Coating of bore and pipe walls with a diameter of approx. 40mm.

Für die Zufuhr der Betriebs- sowie Kühlmedien ist eine Vielzahl von Kanälen 15 vorgesehen, auf die im einzelnen nicht näher eingegangen wird. Zum Abdichten der Kanäle sind O-Ringe (nicht eingezeichnet) vorgesehen. Ein für die Zufuhr des Beschichtungsmaterials vorgesehener Schlauch kann auf das Rohr 13 aufgeschoben und auch wieder davon abgezogen werden.A large number of channels 15 are provided for supplying the operating and cooling media, which are not dealt with in detail. For sealing the channels O-rings (not shown) are provided. One for the supply of the coating material The hose provided can be pushed onto the tube 13 and be subtracted from it.

Für die Stromversorgung des Brennerkopfs 1 ist sowohl der Anodenbasiskörper 4 wie auch der Kathodenbasiskörper 6 mit je einem elektrischen Kontaktelement 7, 8 versehen. Der Isolierkörper 5 weist einen Fortsatz 9 auf, welcher sich zwischen den beiden Kontaktelementen 7, 8 erstreckt und diese elektrisch gegeneinander isoliert. Sowohl die Kontaktelemente 7, 8 wie auch der Fortsatz 9 des Isolierkörpers 5 überragen die zum Brennerschaft 2 zu richtende Stirnseite S des Brennerkopfs 1. Beide Kontaktelemente 7, 8 sind mit seitlichen Ausnehmungen 17, 18 versehen, auf die nachfolgend noch näher eingegangen wird. Der Fortsatz 9 des Isolierkörpers 5 überragt die beiden Kontaktelemente 7, 8 sowohl seitlich wie auch nach vorne.Both the anode base body 4 is for the power supply of the burner head 1 as well as the cathode base body 6, each with an electrical contact element 7, 8 Mistake. The insulating body 5 has an extension 9, which is between the extends two contact elements 7, 8 and insulates them electrically from one another. Both the contact elements 7, 8 and the extension 9 of the insulating body 5 protrude the end face S of the burner head 1 to be directed toward the burner shaft 2. Both Contact elements 7, 8 are provided with lateral recesses 17, 18 on the will be discussed in more detail below. The extension 9 of the insulating body 5 protrudes the two contact elements 7, 8 both laterally and forwards.

Der Brennerschaft 2 besteht im wesentlichen aus zwei beabstandeten Rohren 20, 21, durch deren Innenraum die für den Betrieb des Brennerkopfs 1 benötigten Medien geführt sind. Zwischen den beiden Rohren 20, 21 sind zwei Schnellspannhebel 23 angeordnet, welche auf der Vorderseite je einen mit einem Schlitz 25 versehenen Exzenter 24 aufweisen. Auf der dem Brennerkopf 1 zuzuwendenden Stirnseite S1 sind die beiden Rohre 20, 21 mit je einem Anschlusselement 27, 28 versehen. Beide Anschlusselemente 27, 28 weisen je eine Aussparung 30, 31 zur Aufnahme der Kontaktelemente 7, 8 des Brennerkopfs 1 auf.The burner shaft 2 consists essentially of two spaced tubes 20, 21, through the interior of which the media required for the operation of the burner head 1 are led. Between the two tubes 20, 21 are two quick release levers 23 arranged, each provided with a slot 25 on the front Have eccentric 24. On the end face S1 facing the burner head 1 the two tubes 20, 21 are each provided with a connecting element 27, 28. Both Connection elements 27, 28 each have a recess 30, 31 for receiving the Contact elements 7, 8 of the burner head 1.

Anhand der Figuren 3a bis 3c wird das Fixieren des Brennerkopfs 1 am Brennerschaft 2 näher erläutert. Dabei geht insbesondere aus der Figur 3a die Gestaltung der Schnellspannhebel 23 sowie der Kontaktelemente 7, 8 hervor. Aus der Figur 3a ist zudem ersichtlich, dass die Schnellspannhebel 23 je einen mit einem Schlitz 25 versehenen Exzenter 24 aufweisen, dass die Kontaktelemente 7 mit Ausnehmungen 17 versehen sind, und dass der Fortsatz 9 des Isolierkörpers die beiden Kontaktelemente 7 sowohl seitlich wie auch nach vorne überragt, wobei aus dieser Darstellung nur das obere der beiden Kontaktelemente 7 ersichtlich ist. 3a to 3c is used to fix the burner head 1 to the burner shaft 2 explained in more detail. The design in particular goes from FIG. 3a the quick release lever 23 and the contact elements 7, 8 emerge. From Figure 3a it can also be seen that the quick release levers 23 each have a slot 25 provided eccentric 24 that the contact elements 7 with recesses 17 are provided, and that the extension 9 of the insulating body, the two contact elements 7 protrudes both laterally and forward, from this illustration only the upper of the two contact elements 7 can be seen.

Fig. 3a zeigt Brennerschaft 2 mit den Schnellspannhebeln 23 in der Ausgangsstellung, in welcher der Brennerkopf 1 am Brennerschaft 2 befestigt werden kann. Dazu werden die Kontaktelemente 7 des Brennerkopfs 1 in die entsprechenden Aussparungen 30 des Brennerschafts 2 eingeführt und die Schnellspannhebel 23, wie in der Fig. 3b gezeigt, nach oben gedrückt. Dadurch greifen die Exzenter 24 der Schnellspannhebel 23 in die Ausnehmungen 17 der Kontaktelemente 7 ein. Die Exzenter 24 sind dabei so gestaltet, dass beim Verschwenken des jeweiligen Schwenkhebels 23 der Exzenter 24 das Kontaktelement 7 in Richtung des Brennerschafts 2 zieht. Fig. 3c zeigt die Schwenkhebel 23 in der geschlossenen Wirkstellung, in der der Brennerkopf 1 am Brennerschaft 2 fixiert und die elektrische Verbindung zwischen Brennerschaft 2 und Brennerkopf 1 sichergestellt ist und ausserdem die Kanäle des Brennerschafts 2 mit denjenigen des Brennerkopfs 1 verbunden sind. Durch die O-Ringe wird sichergestellt, dass die Kanäle sicher abgedichtet werden, und dass der Brennerkopf 1 mit einer gewissen Vorspannkraft am Brennerschaft 2 anliegt, wodurch die Schwenkhebel 23 sicher in der Wirkstellung verharren.3a shows burner shaft 2 with the quick-release levers 23 in the starting position, in which the burner head 1 can be attached to the burner shaft 2. To the contact elements 7 of the burner head 1 in the corresponding recesses 30 of the burner shaft 2 inserted and the quick release lever 23, as in the Fig. 3b shown, pressed upwards. As a result, the eccentrics 24 of the quick-release levers engage 23 into the recesses 17 of the contact elements 7. The eccentrics 24 are designed so that when the respective pivot lever 23 is pivoted the eccentric 24 pulls the contact element 7 in the direction of the burner shaft 2. FIG. 3c shows the swivel lever 23 in the closed operative position, in which the burner head 1 fixed to the burner shaft 2 and the electrical connection between the burner shaft 2 and burner head 1 is ensured and also the channels of the burner shaft 2 are connected to those of the burner head 1. Through the o-rings ensures that the channels are securely sealed and that the burner head 1 rests with a certain preload on the burner shaft 2, whereby the The swivel lever 23 remains securely in the active position.

Durch die modulare Ausgestaltung des Brennerkopfs 1 und die beschriebene Ausbildung der Kontaktelemente 7, 8 sowie der Schnellspannhebel 23 ist es einerseits möglich, den Brennerkopf 1 -und damit natürlich auch die potentiellen Verschleissteile wie Anodendüse 10 oder Kathode 11- schnell und einfach auszutauschen. Indem die Kontaktelemente 7, 8 nebst ihrer eigentlichen Aufgabe der Stromübertragung auch noch als Zugbolzen verwendet werden, kann der Brennerkopf 1 sehr kompakt gehalten werden. Durch die spezifische Ausbildung des sich zwischen den beiden Kontaktelementen 7, 8 erstreckenden Fortsatzes 9 des Isolierkörpers 5, welcher die Kontaktelemente 7, 8 seitlich und in Längsrichtung überragt, wird eine lange Isolierstrecke zwischen den beiden Kontaktelementen 7, 8 gebildet, so dass die beiden Kontaktelemente 7, 8 sicher gegeneinander isoliert sind.Due to the modular design of the burner head 1 and the training described the contact elements 7, 8 and the quick release lever 23, on the one hand possible, the burner head 1 - and of course the potential wear parts such as anode nozzle 10 or cathode 11 - can be replaced quickly and easily. By doing the contact elements 7, 8 in addition to their actual task of power transmission can also be used as a draw bolt, the burner head 1 can very much be kept compact. Due to the specific training of the two contact elements 7, 8 extending extension 9 of the insulating body 5, which the contact elements 7, 8 protrudes laterally and in the longitudinal direction, a long Isolation gap formed between the two contact elements 7, 8, so that the two Contact elements 7, 8 are securely insulated from each other.

Es bleibt anzufügen, dass das vorgängige Ausführungsbeispiel keinesfalls abschliessenden Charakter aufweisen soll, sondern dass im Rahmen des in den Patentansprüchen definierten Schutzumfangs durchaus von vorgängigem Ausführungsbeispiel abweichende Gestaltungen der Plasmaspritzvorrichtung möglich sind. So könnten beispielsweise die Kontaktelemente anstelle von Ausnehmungen mit Erhebungen versehen werden, an denen die am Brennerschaft angeordneten Schnellspannmittel angreifen können. Ebenso könnte der Isolierkörper bzw. dessen Fortsatz mit Ausnehmungen und/oder Erhebungen versehen werden, an denen die am Brennerschaft angeordneten Schnellspannmittel angreifen können.It remains to be added that the previous embodiment is by no means conclusive Character should have, but that within the scope of the claims defined scope of protection of previous embodiment different designs of the plasma spray device are possible. So could, for example, the contact elements instead of recesses with elevations be provided on which the quick-release means arranged on the burner shaft can attack. The insulating body or its extension could also be used be provided with recesses and / or surveys on which the burner can attack arranged quick release.

Claims (9)

  1. Plasma spraying device, in particular for coating walls of holes and tubes, having a torch shank (2) and a torch head (1) which can be secured to the shank and from which the plasma jet emerges radially, the torch head (1) having an anode base body (4), a cathode base body (6) and an insulating body (5) inserted between them, and the anode base body (4) and the cathode base body (5) being provided with in each case at least one electrical contact element (7, 8) for transferring current from the torch shank (2) to the torch head (1), characterized in that the insulating body (5) and/or the contact elements (7, 8) project(s) beyond that end side (S) of the torch head (1) which is to face towards the torch shank (2), and in that the insulating body (5) and/or the contact elements (7, 8) is/are provided with recesses (17) and/or elevations, on which quick-clamping means (23, 24) arranged on the torch shank (2) are intended to engage.
  2. Plasma spraying device according to Claim 1, characterized in that there are two axially parallel contact elements (7, 8), which project beyond that end side (S) of the torch head (1) which is to face towards the torch shank (2), the insulating body (5) being provided with an extension (9) which extends between the contact elements (7, 8) and projects beyond the contact elements (7, 8) both laterally and on the end side (S) which is to face towards the torch shank (2).
  3. Plasma spraying device according to Claim 2, characterized in that the torch shank (2) is provided with two rotatably mounted quick-clamping levers (23) which are each provided with an eccentric (24), the eccentric (24) interacting with the recesses (17) and/or elevations of the contact elements (7, 8) and/or the recesses and/or elevations of the extension (9) in order to fix the torch head (1).
  4. Plasma spraying device according to Claim 3, characterized in that the eccentrics (24) are each provided with a slot (25), into which the extension (9) of the insulating body (5) engages during fixing of the torch head (1).
  5. Plasma spraying device according to Claim 3 or 4, characterized in that the external shaping of the eccentric (24), which is formed integrally on the corresponding quick-clamping lever (23), and the shape of the elevations and/or recesses (17) formed integrally on the corresponding contact element (7, 8) are matched to one another in such a manner that when the quick-clamping lever (23) is pivoted, the eccentric (24) pulls the contact elements (7, 8) towards the torch shank (2).
  6. Plasma spraying device according to one of Claims 2 to 5, characterized in that the torch head (1) has two contact elements (7, 8) provided with recesses (17), and the torch shank (2) is provided with two quick-clamping levers (23), which can be moved from a starting position into an active position, the quick-clamping levers (23) being accommodated in the torch shank (2) in the active position.
  7. Plasma spraying device according to Claim 6, characterized in that the torch shank (2) is formed by two spaced-apart tubes (20, 21), and in that the quick-clamping levers (23) are accommodated in the space between the tubes (20, 21) in the closed, active position.
  8. Plasma spraying device according to one of the preceding claims, characterized in that the contact elements (7, 8) are designed substantially in plate form and are arranged parallel to the longitudinal centre axis of the torch head (1).
  9. Plasma spraying device according to one of the preceding claims, characterized in that the quick-clamping levers (23) are made from electrically insulating material.
EP00810376A 1999-06-30 2000-05-03 Plasma spray device Expired - Lifetime EP1065914B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH121199 1999-06-30
CH121199 1999-06-30

Publications (2)

Publication Number Publication Date
EP1065914A1 EP1065914A1 (en) 2001-01-03
EP1065914B1 true EP1065914B1 (en) 2004-01-21

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EP00810376A Expired - Lifetime EP1065914B1 (en) 1999-06-30 2000-05-03 Plasma spray device

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JP3543149B2 (en) 2001-09-03 2004-07-14 島津工業有限会社 Torch head for plasma spraying
US6863930B2 (en) 2002-09-06 2005-03-08 Delphi Technologies, Inc. Refractory metal mask and methods for coating an article and forming a sensor
EP1692922B1 (en) * 2003-12-09 2007-04-25 Amt Ag Plasma spraying device
SE529058C2 (en) * 2005-07-08 2007-04-17 Plasma Surgical Invest Ltd Plasma generating device, plasma surgical device, use of a plasma surgical device and method for forming a plasma
SE529056C2 (en) 2005-07-08 2007-04-17 Plasma Surgical Invest Ltd Plasma generating device, plasma surgical device and use of a plasma surgical device
SE529053C2 (en) 2005-07-08 2007-04-17 Plasma Surgical Invest Ltd Plasma generating device, plasma surgical device and use of a plasma surgical device
US7928338B2 (en) * 2007-02-02 2011-04-19 Plasma Surgical Investments Ltd. Plasma spraying device and method
US20080220558A1 (en) * 2007-03-08 2008-09-11 Integrated Photovoltaics, Inc. Plasma spraying for semiconductor grade silicon
US7589473B2 (en) * 2007-08-06 2009-09-15 Plasma Surgical Investments, Ltd. Pulsed plasma device and method for generating pulsed plasma
US8735766B2 (en) * 2007-08-06 2014-05-27 Plasma Surgical Investments Limited Cathode assembly and method for pulsed plasma generation
US8253058B2 (en) * 2009-03-19 2012-08-28 Integrated Photovoltaics, Incorporated Hybrid nozzle for plasma spraying silicon
US8613742B2 (en) * 2010-01-29 2013-12-24 Plasma Surgical Investments Limited Methods of sealing vessels using plasma
US9089319B2 (en) 2010-07-22 2015-07-28 Plasma Surgical Investments Limited Volumetrically oscillating plasma flows
US9272360B2 (en) * 2013-03-12 2016-03-01 General Electric Company Universal plasma extension gun
CA3191050A1 (en) 2020-08-28 2022-03-03 Nikolay Suslov Systems, methods, and devices for generating predominantly radially expanded plasma flow

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DE3100824A1 (en) * 1981-01-14 1982-07-29 Gebr. Lohmann, 5980 Werdohl Pipeline coupling
DE3430383A1 (en) * 1984-08-17 1986-02-27 Plasmainvent AG, Zug PLASMA SPRAY BURNER FOR INTERNAL COATINGS
DE4228064A1 (en) 1992-08-24 1994-03-03 Plasma Technik Ag Plasma spray gun
ATE146643T1 (en) 1993-09-29 1997-01-15 Sulzer Metco Ag TORCH HEAD FOR PLASMA SPRAYERS

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CA2311088C (en) 2004-01-20
DE50005068D1 (en) 2004-02-26
JP4287986B2 (en) 2009-07-01
EP1065914A1 (en) 2001-01-03
US6386140B1 (en) 2002-05-14
JP2001043996A (en) 2001-02-16
CA2311088A1 (en) 2000-12-30

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