AT50297B - Device for preventing ignition of the valve plates made of hard rubber or the like in pressure reducers and similar valves for compressed gases, especially oxygen. - Google Patents

Device for preventing ignition of the valve plates made of hard rubber or the like in pressure reducers and similar valves for compressed gases, especially oxygen.

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Publication number
AT50297B
AT50297B AT50297DA AT50297B AT 50297 B AT50297 B AT 50297B AT 50297D A AT50297D A AT 50297DA AT 50297 B AT50297 B AT 50297B
Authority
AT
Austria
Prior art keywords
hard rubber
plates made
valve plates
compressed gases
pressure reducers
Prior art date
Application number
Other languages
German (de)
Original Assignee
Draegerwerk Heinr U Bernh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Draegerwerk Heinr U Bernh filed Critical Draegerwerk Heinr U Bernh
Application granted granted Critical
Publication of AT50297B publication Critical patent/AT50297B/en

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  • Feeding And Controlling Fuel (AREA)
  • Check Valves (AREA)

Description

  

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  Vorrichtung zur Verhütung der Entflammung der Ventilplatten aus Hartgummi od. dgl. 
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 (bzw. Sauerstoff) abzuleiten und in eine Kammer zusammenzudrängen, die abseits von   der   Ventilplatte liegt. 
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 Sauerstoffdurckminderventile mit hoher Leistung und   grossem Querschnitt, wie solche besonders   beim autogenen Schweissen und schneiden zur Verwendung gelangen. 



   Die neue Vorrichtung zur   Unschädlichmachung   der entstehenden Wärme besteht darin, dass man   in dem Kanal, durch   den das Druckgas in das Druckminderventil gelangt, also in dem Kanal b der in Fig. 1 durchestellten bekannten Anordnung. und zwar vorzugsweise in der Nähe der Hartgummiplatte d, einen mit Gasdurchlässen verschenen Metallkörper anordnet. der dein 
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     '3ei   dem in Fig.        und 6 dargestellten Ausführungsbeispiel besteht   der in dem Kanal b angeordnete, wärmeaufzehrend wirkende Metallkörper aus einem ausammengerollten Draht- 
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 erwärmt wird. Bei der Wahl der   Metallmasse   hat man besseren Wärmeleitern natürlich den Vorzug zu geben und zu berücksichtigen, dass die   Wärmeaufnahmefähigkeit des Materials   bekanntlich proportional seinem Gewicht ist. 
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 dass   die Wärmemenge, die das erhitzte Gas bringt,   nur   unbedeutend ist m Verhältnis zu der     Wärmemenge,   die das Drahtnetz   aufnehmen   kann, wenn es sich beispielsweise von 20  C auf 50 Cerwärmt. 

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   Die Wirkung der Einrichtungen ist umso günstiger, je besser der Metallkörper mit der Wandung des Kanals zur Ableitung der Wärme verbunden ist. Bei manchen Druckminderer genügt sogar das Einschieben eines enganliegenden Röhrchens aus Drahtnetz oder das Riefeln und Rauhmachen der Kanalwandung in der Nähe der Hartgummiplatte. 



   In Fig. 10 ist ein anderes Ausführungsbeispiel dargestellt. Da die Entzündung der Hart-   gummiplatte immer   von der Mitte dieser Platte, d. h. da, wo das erhitzte Gas auftrifft, ausgeht, so kommt es darauf an, diese Stelle gegen Entzündung zu schützen. Zu diesem Zweck ist die 
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   PATENT. ANSPRÜCHE : 
1. Vorrichtung zur Verhütung der Entflammung der Ventilplatten aus Hartgummi od. dgl. in Druckminderern und ähnlichen Ventilen für verdichtete Gase, besonders Sauerstoff, dadurch gekennzeichnet, dass in dem Kanal (b), durch den das verdichtete Gas in den Druckminderer gelangt, möglichst in unmittelbarer Nähe vor der entzündbaren Ventilplatte (d) ein mit Gasdurchlässen versehener Metallkörper (i,   '1,   i2 oder i3) angeordnet ist.



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  Device for preventing ignition of the valve plates made of hard rubber od.
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 (or oxygen) to be diverted and to be forced into a chamber that is away from the valve plate.
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 Oxygen pressure reducing valves with high performance and large cross-section, such as those used especially for oxy-fuel welding and cutting.



   The new device for rendering the heat generated harmless consists in the fact that one enters the channel through which the pressurized gas reaches the pressure reducing valve, that is to say in channel b of the known arrangement shown in FIG. and preferably in the vicinity of the hard rubber plate d, a metal body with gas passages is arranged. yours
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     In the exemplary embodiment shown in FIGS. 1 and 6, the heat-absorbing metal body arranged in the channel b consists of a rolled wire
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 is heated. When choosing the metal mass, better heat conductors must of course be given preference and it must be taken into account that the heat absorption capacity of the material is known to be proportional to its weight.
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 that the amount of heat that the heated gas brings is only insignificant in relation to the amount of heat that the wire mesh can absorb if, for example, it warms up from 20 C to 50 C.

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   The effect of the devices is all the more favorable, the better the metal body is connected to the wall of the channel for dissipating the heat. With some pressure reducers, it is even sufficient to insert a tight-fitting tube made of wire mesh or to grooved and roughened the duct wall near the hard rubber plate.



   Another embodiment is shown in FIG. Since the ignition of the hard rubber plate always starts from the center of this plate, i.e. H. where the heated gas goes out, it is important to protect this point against inflammation. For this purpose the
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   PATENT. EXPECTATIONS :
1. Device for preventing the ignition of the valve plates made of hard rubber or the like in pressure reducers and similar valves for compressed gases, especially oxygen, characterized in that in the channel (b) through which the compressed gas enters the pressure reducer, if possible in A metal body (i, '1, i2 or i3) provided with gas passages is arranged in the immediate vicinity of the ignitable valve plate (d).

 

Claims (1)

2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der Zuleitungskanal (b) vorzugsweise in der Nähe vor der Ventilplatte (d) durch Riefeln oder Rauhmachen seiner Wandung eine vergrösserte Oberfläche erhält. 2. Apparatus according to claim 1, characterized in that the supply channel (b) is given an enlarged surface by grooving or roughening its wall, preferably in the vicinity in front of the valve plate (d). 3. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der Metallkörper (i4) in der Mitte der Ventilplatte selbst angeordnet ist. 3. Device according to claim 1, characterized in that the metal body (i4) is arranged in the center of the valve plate itself.
AT50297D 1909-05-21 1910-05-19 Device for preventing ignition of the valve plates made of hard rubber or the like in pressure reducers and similar valves for compressed gases, especially oxygen. AT50297B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE50297X 1909-05-21

Publications (1)

Publication Number Publication Date
AT50297B true AT50297B (en) 1911-10-25

Family

ID=5626601

Family Applications (1)

Application Number Title Priority Date Filing Date
AT50297D AT50297B (en) 1909-05-21 1910-05-19 Device for preventing ignition of the valve plates made of hard rubber or the like in pressure reducers and similar valves for compressed gases, especially oxygen.

Country Status (1)

Country Link
AT (1) AT50297B (en)

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