EP0973003A1 - Method and device for the cooling of gun barrels - Google Patents

Method and device for the cooling of gun barrels Download PDF

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Publication number
EP0973003A1
EP0973003A1 EP99112908A EP99112908A EP0973003A1 EP 0973003 A1 EP0973003 A1 EP 0973003A1 EP 99112908 A EP99112908 A EP 99112908A EP 99112908 A EP99112908 A EP 99112908A EP 0973003 A1 EP0973003 A1 EP 0973003A1
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EP
European Patent Office
Prior art keywords
coolant
pressure
barrel
nozzle
reservoir
Prior art date
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Granted
Application number
EP99112908A
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German (de)
French (fr)
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EP0973003B1 (en
Inventor
Michael Gerber
Gabriel Schneider
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Rheinmetall Air Defence AG
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Oerlikon Contraves AG
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Publication of EP0973003A1 publication Critical patent/EP0973003A1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A13/00—Cooling or heating systems; Blowing-through of gun barrels; Ventilating systems
    • F41A13/04—Injecting fluids into barrels or cartridge chambers

Definitions

  • the invention relates to a method and a device for cooling gun barrels for Firearms, with a gun barrel over at least one supply line and at least one A coolant is supplied to the nozzle.
  • German patent DE-PS 31 45 764 a cooling device for gun barrels of firearms according to the preamble has become known, which is particularly suitable for automatic firearms and high-performance machine guns.
  • high-performance firearms of this type which fire highly-developed ammunition
  • the high level of weapon barrel wear is due to the fact that the surface heat is not dissipated quickly enough.
  • the rapid succession of heat during the burst of fire causes surface tensions and material conversions.
  • due to the escaping powder gases and the friction between the projectile and the barrel the material in the barrel is removed.
  • the patent cited above proposes to provide cooling channels in the area of the end part of the gun barrel axially adjacent to a barrel in the barrel, radially outward between the individual cartridges, which have a main channel for the coolant supply running in the barrel axis are connected.
  • the cooling channels are connected to nozzles running parallel to the longitudinal axis of the drum, which open into the end of the drum facing the weapon barrel and are arranged at the same distance from the longitudinal axis of the drum as the central longitudinal axes of the cartridge chamber.
  • Shut-off devices for the nozzles are provided in the cooling channels, which in the event of bombardment briefly release the nozzle in the area of the pipe opening.
  • the shut-off devices are, for example, slides which can be moved by means of control pieces sliding along a control cam when the drum rotates.
  • the coolant passes through the nozzles directly onto the inner wall of the barrel in the rear part.
  • the nozzles are only open for the period when the nozzles slide past in the rear of the gun barrel and the coolant is only supplied when shooting.
  • the period of gliding past may be too short, so that too little coolant gets into the barrel and possibly insufficient cooling is achieved.
  • the invention has for its object a method and an apparatus of the beginning to propose the type mentioned, by means of which sufficient cooling of the gun barrels can be achieved with high-level weapon systems.
  • the advantages that can be achieved with the invention are, in particular, those that are automatic Relubrication of the gun barrel and in the longer barrel life with more intensive Fire rhythms.
  • the use of one or more nozzles ensures that a sufficient amount of coolant is injected into the gun barrel, with each Shot only a little coolant can flow back.
  • Another advantage is that during the use of the proposed Cooling device - with the exception of the piston - no mechanically moving parts required with which a high degree of reliability is achieved.
  • a reservoir 6 which also contains a coolant 7 which also serves as a lubricant for the weapon barrel 1 , is connected to a pressure cylinder 10 via a line 8 and a check valve 9 .
  • a piston 11 is guided in the pressure cylinder 10 and is firmly connected to a hydraulic piston 13 guided in a hydraulic cylinder 12 .
  • the pressure cylinder 10 is connected to the weapon barrel 1 via a feed line 14 and an electrically controllable valve 15, for example.
  • a nozzle 16 is provided which has a sleeve 17 connected to the feed line 14 and fastened to the gun barrel 1 .
  • a labyrinth 18 is arranged in the sleeve 17 in which a channel 19 or 19 ′ , for example a labyrinth or serpentine line, is provided, which, as described in more detail below, brings about a pressure reduction.
  • nozzle bore in the gun barrel 1 denotes a nozzle bore in the gun barrel 1 , which in the present exemplary embodiment is arranged concentrically with the sleeve 17 and whose diameter is smaller than the feed bores 21, 22 provided in the gun barrel 1 or in the sleeve 17 .
  • the device described above works as follows: By pulling the hydraulic piston 13 , the coolant 7 is conveyed from the reservoir 6 via the line 8 and the check valve 9 into the pressure cylinder 10 , the electrically operable valve 15 in the feed line 14 being closed. Then, by reversing the pressure on the hydraulic cylinder 12, the hydraulic piston 13 and thus also the piston 11 are moved in the opposite direction and the coolant 7 in the pressure cylinder 10 is set to a specific operating pressure of, for example, approximately 500 bar, which means that the device is ready for use. Before a burst of fire is triggered, the valve 15 is opened so that the coolant 7 can flow to the weapon barrel 1 via the feed line 14 and the nozzle (s) 16 .
  • the coolant 7 is continuously injected into the gun barrel 1 by the operating pressure until another shot is fired.
  • valve 15 is closed again.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Toys (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
  • Loading And Unloading Of Fuel Tanks Or Ships (AREA)

Abstract

A method for cooling the barrel in a rapid fire gun, e.g. a revolving barrel canon, has coolant pumped from a reservoir (7) and sprayed into the barrel prior to each discharge via a spray jet (16). The coolant is drawn from the reservoir and is compressed by a reciprocating piston (11). A non return valve (9) connects to the reservoir and a solenoid valve (15) controls the coolant spray into the barrel. The spray jet has a labyrinth duct to protect the system against back pressure during firing.

Description

Die Erfindung betrifft ein Verfahren und eine Vorrichtung zur Kühlung von Waffenrohren für Feuerwaffen, wobei einem Waffenrohr über mindestens eine Zuleitung und mindestens eine Düse ein Kühlmittel zugeführt wird.The invention relates to a method and a device for cooling gun barrels for Firearms, with a gun barrel over at least one supply line and at least one A coolant is supplied to the nozzle.

Mit der deutschen Patentschrift DE-PS 31 45 764 ist eine Kühlvorrichtung für Waffenrohre von Feuerwaffen gemäss Oberbegriff bekannt geworden, die insbesondere für automatische Feuerwaffen und Hochleistungsmaschinenkanonen geeignet ist. Bei derartigen Hochleistungsfeuerwaffen, die hochgezüchtete Munition verschiessen, ist der hohe Waffenrohrverschleiss darauf zurückzuführen, dass die Oberflächenwärme nicht genügend schnell abgeführt wird. Die schnell aufeinanderfolgende Wärmebeaufschlagung beim Feuerstoss verursacht Oberflächenspannungen und Werkstoffumwandlungen. Zudem kommt es durch die ausströmenden Pulvergase, sowie durch die Reibung zwischen Geschoss und Waffenrohr zur Abtragung vom Material im Waffenrohr.
Um die Lebensdauer der Waffenrohre zu erhöhen wird mit vorstehend zitierter Patentschrift vorgeschlagen, im Bereich des axial an eine Trommel angrenzenden Endteiles des Waffenrohres in der Trommel radial nach aussen zwischen den einzelnen Patronenlagern ausgerichtete Kühlkanäle vorzusehen, die mit einem in der Trommelachse verlaufenden Hauptkanal für die Kühlmittelzufuhr verbunden sind. Die Kühlkanäle sind mit parallel zur Trommellängsachse verlaufenden Düsen verbunden, die in die dem Waffenrohr zugewandte Stirnseite der Trommel einmünden und im gleichen Abstand zur Trommellängsachse wie die Mittellängsachsen der Patronenlager angeordnet sind. In den Kühlkanälen sind Absperrorgane für die Düsen vorgesehen, die im Falle des Beschusses jeweils diejenige Düse kurzzeitig freigeben, die sich im Bereich der Rohröffnung befindet. Die Absperrorgane sind z.B. Schieber, die mittels an einer Steuerkurve bei Drehbewegung der Trommel entlanggleitenden Steuerstücken verschoben werden können. Das Kühlmittel gelangt durch die Düsen direkt auf die Innenwandung des Waffenrohres im rückwärtigen Teil. Dabei sind die Düsen nur jeweils für den Zeitraum des Vorbeigleitens der Düsen im Waffenrohrrückteil geöffnet und die Kühlmittelzufuhr erfolgt nur dann, wenn geschossen wird. Für Rohrwaffensysteme mit höherer Kadenz bzw. intensiveren Feuerrhythmen kann jedoch der Zeitraum des Vorbeigleitens zu kurz sein, so dass zu wenig Kühlflüssigkeit in das Waffenrohr gelangt und möglicherweise nur eine ungenügende Kühlung erreicht wird.With the German patent DE-PS 31 45 764 a cooling device for gun barrels of firearms according to the preamble has become known, which is particularly suitable for automatic firearms and high-performance machine guns. In high-performance firearms of this type, which fire highly-developed ammunition, the high level of weapon barrel wear is due to the fact that the surface heat is not dissipated quickly enough. The rapid succession of heat during the burst of fire causes surface tensions and material conversions. In addition, due to the escaping powder gases and the friction between the projectile and the barrel, the material in the barrel is removed.
In order to increase the service life of the gun barrels, the patent cited above proposes to provide cooling channels in the area of the end part of the gun barrel axially adjacent to a barrel in the barrel, radially outward between the individual cartridges, which have a main channel for the coolant supply running in the barrel axis are connected. The cooling channels are connected to nozzles running parallel to the longitudinal axis of the drum, which open into the end of the drum facing the weapon barrel and are arranged at the same distance from the longitudinal axis of the drum as the central longitudinal axes of the cartridge chamber. Shut-off devices for the nozzles are provided in the cooling channels, which in the event of bombardment briefly release the nozzle in the area of the pipe opening. The shut-off devices are, for example, slides which can be moved by means of control pieces sliding along a control cam when the drum rotates. The coolant passes through the nozzles directly onto the inner wall of the barrel in the rear part. The nozzles are only open for the period when the nozzles slide past in the rear of the gun barrel and the coolant is only supplied when shooting. For barrel weapon systems with higher cadence or more intense fire rhythms, however, the period of gliding past may be too short, so that too little coolant gets into the barrel and possibly insufficient cooling is achieved.

Der Erfindung liegt die Aufgabe zugrunde ein Verfahren und eine Vorrichtung der eingangs genannten Art vorzuschlagen, mittels welchen eine ausreichende Kühlung der Waffenrohre bei hochkadenten Waffensystemen erreicht werden kann.The invention has for its object a method and an apparatus of the beginning to propose the type mentioned, by means of which sufficient cooling of the gun barrels can be achieved with high-level weapon systems.

Diese Aufgabe wird durch die in den Patentansprüchen 1 und 3 angegebene Erfindung gelöst. Hierbei wird durch Aufziehen eines Hydraulikkolbens Kühlmittel aus einem Reservoir in einen Druckzylinder gefördert, wobei die Zuleitung zum Waffenrohr geschlossen ist. Danach wird der Hydraulikkolben durch Druckumkehr in die entgegengesetzte Richtung bewegt und das Kühlmittel im Druckzylinder unter einen bestimmten Betriebsdruck gesetzt. Vor dem Auslösen eines Feuerstosses wird die Zuleitung geöffnet, so dass das Kühlmittel über die Zuleitung und die Düse zum Waffenrohr strömen kann. Das Kühlmittel wird jeweils durch den bei der Schussabgabe entstehenden Gasdruck zurückgedrückt und nach dem Absinken des Gasdruckes auf den Betriebsdruck wieder in das Waffenrohr eingespritzt.This object is achieved by the invention specified in claims 1 and 3 . Here, by drawing up a hydraulic piston, coolant is conveyed from a reservoir into a pressure cylinder, the feed line to the weapon barrel being closed. The hydraulic piston is then moved in the opposite direction by pressure reversal and the coolant in the pressure cylinder is set to a specific operating pressure. Before a burst of fire is triggered, the supply line is opened so that the coolant can flow via the supply line and the nozzle to the weapon barrel. The coolant is pressed back by the gas pressure generated when the shot is fired and, after the gas pressure has dropped to the operating pressure, is injected back into the weapon barrel.

Die mit der Erfindung erzielbaren Vorteile liegen insbesondere in der automatischen Nachschmierung des Waffenrohres und in der höheren Rohrlebensdauer bei intensiveren Feuerrythmen. Durch den Einsatz von einer oder mehreren Düsen wird sichergestellt, dass eine genügend grosse Menge Kühlmittel in das Waffenrohr gespritzt wird, wobei bei jedem Schuss nur wenig Kühlmittel zurückfliessen kann. The advantages that can be achieved with the invention are, in particular, those that are automatic Relubrication of the gun barrel and in the longer barrel life with more intensive Fire rhythms. The use of one or more nozzles ensures that a sufficient amount of coolant is injected into the gun barrel, with each Shot only a little coolant can flow back.

Ein weiterer Vorteil ist darin zu sehen, dass während des Einsatzes der vorgeschlagenen Kühlvorrichtung -mit Ausnahme des Kolbens- keine mechanisch bewegten Teile benötigt werden, womit also eine hohe Zuverlässigkeit erreicht wird.Another advantage is that during the use of the proposed Cooling device - with the exception of the piston - no mechanically moving parts required with which a high degree of reliability is achieved.

Im folgenden wird die Erfindung anhand eines Ausführungsbeispieles im Zusammenhang mit der Zeichnung erläutert. Es zeigen:

Fig. 1
einen Teillängsschnitt einer Kanone mit der erfindungsgemässen Vorrichtung in schematischer Darstellung, und
Fig. 2
eine Düse der Vorrichtung gemäss Fig. 1 in grösserem Massstab.
The invention is explained below using an exemplary embodiment in conjunction with the drawing. Show it:
Fig. 1
a partial longitudinal section of a cannon with the inventive device in a schematic representation, and
Fig. 2
a nozzle of the device of FIG. 1 on a larger scale.

In der Fig. 1 und 2 ist mit 1 ein Waffenrohr einer beispielsweise mit der Druckschrift OC 2059 e 94 der Firma Oerlikon-Contraves, Zürich, bekannt gewordene Revolverkanone bezeichnet, an dessen Vorderteil 2 eine Mündungsbremse 3 und an dessen Hinterteil 4 ein Revolvergehäuse 5 mit einer nicht weiter dargestellten und beschriebenen Revolvertrommel angeordnet ist. Ein Reservoir 6, das ein gleichzeitig auch als Schmiermittel für das Waffenrohr 1 dienendes Kühlmittel 7 enthält, ist über eine Leitung 8 und ein Rückschlagventil 9 mit einem Druckzylinder 10 verbunden. Im Druckzylinder 10 wird ein Kolben 11 geführt, der mit einem in einem Hydraulikzylinder 12 geführten Hydraulikkolben 13 fest verbunden ist. Der Druckzylinder 10 steht über eine Zuleitung 14 und ein beispielsweise elektrisch steuerbares Ventil 15 mit dem Waffenrohr 1 in Verbindung. An der im hinteren Teil 4 des Waffenrohrs 1 befindlichen Einmündung der Zuleitung 14 ist eine Düse 16 vorgesehen, die eine mit der Zuleitung 14 verbundene und am Waffenrohr 1 befestigte Hülse 17 aufweist. In der Hülse 17 ist ein Labyrinth 18 in Form eines oder mehrerer Einsatzstückes angeordnet, in welchem ein beispielsweise labyrinth- oder schlangenlinienförmiger Kanal 19 bzw. 19' vorgesehen ist, der wie nachstehend näher beschrieben, eine Druckreduktion bewirkt. Mit 20 ist eine Düsenbohrung im Waffenrohr 1 bezeichnet, die im vorliegenden Ausführungsbeispiel konzentrisch zur Hülse 17 angeordnet ist und deren Durchmesser kleiner als die im Waffenrohr 1 bzw. in der Hülse 17 vorgesehenen Zuleitungsbohrungen 21, 22 ist. 1 and 2 , 1 designates a weapon barrel of a revolver cannon, known for example from Oerlikon-Contraves, Zurich, with the publication OC 2059 e 94 , a muzzle brake 3 on its front part 2 and a revolver housing 5 on its rear part 4 a turret drum, not shown and described, is arranged. A reservoir 6 , which also contains a coolant 7 which also serves as a lubricant for the weapon barrel 1 , is connected to a pressure cylinder 10 via a line 8 and a check valve 9 . A piston 11 is guided in the pressure cylinder 10 and is firmly connected to a hydraulic piston 13 guided in a hydraulic cylinder 12 . The pressure cylinder 10 is connected to the weapon barrel 1 via a feed line 14 and an electrically controllable valve 15, for example. At the mouth of the feed line 14 located in the rear part 4 of the gun barrel 1 , a nozzle 16 is provided which has a sleeve 17 connected to the feed line 14 and fastened to the gun barrel 1 . Arranged in the sleeve 17 is a labyrinth 18 in the form of one or more insert pieces, in which a channel 19 or 19 ′ , for example a labyrinth or serpentine line, is provided, which, as described in more detail below, brings about a pressure reduction. 20 denotes a nozzle bore in the gun barrel 1 , which in the present exemplary embodiment is arranged concentrically with the sleeve 17 and whose diameter is smaller than the feed bores 21, 22 provided in the gun barrel 1 or in the sleeve 17 .

Die vorstehend beschriebene Vorrichtung arbeitet wie folgt:
Durch Aufziehen des Hydraulikkolbens 13 wird das Kühlmittel 7 aus dem Reservoir 6 über die Leitung 8 und das Rückschlagventil 9 in den Druckzylinder 10 gefördert, wobei das elektrisch betätigbare Ventil 15 in der Zuleitung 14 geschlossen ist. Danach wird durch Druckumkehr am Hydraulikzylinder 12 der Hydraulikkolben 13 und damit auch der Kolben 11 in die entgegengesetzte Richtung bewegt und das Kühlmittel 7 im Druckzylinder 10 unter einen bestimmten Betriebsdruck von beispielsweise ca. 500 bar gesetzt, womit die Vorrichtung einsatzbereit ist.
Vor dem Auslösen eines Feuerstosses wird das Ventil 15 geöffnet, so dass das Kühlmittel 7 über die Zuleitung 14 und die Düse(n) 16 zum Waffenrohr 1 strömen kann. Der bei der nun folgenden Schussabgabe entstehende hohe Gasdruck von beispielsweise ca. 5000 bar drückt das Kühlmittel zurück, wobei durch Reibung in der Düse 16 der Gasdruck auf den Betriebsdruck von ca. 500 bar reduziert wird und nur wenig Kühlmittel 7 zurückfliesst. Sobald der Gasdruck im Waffenrohr 1 abgefallen ist, wird das Kühlmittel 7 durch den Betriebsdruck kontinuierlich in das Waffenrohr 1 eingespritzt, bis ein weiterer Schuss fällt. Am Ende einer Serie wird das Ventil 15 wiederum geschlossen. The device described above works as follows:
By pulling the hydraulic piston 13 , the coolant 7 is conveyed from the reservoir 6 via the line 8 and the check valve 9 into the pressure cylinder 10 , the electrically operable valve 15 in the feed line 14 being closed. Then, by reversing the pressure on the hydraulic cylinder 12, the hydraulic piston 13 and thus also the piston 11 are moved in the opposite direction and the coolant 7 in the pressure cylinder 10 is set to a specific operating pressure of, for example, approximately 500 bar, which means that the device is ready for use.
Before a burst of fire is triggered, the valve 15 is opened so that the coolant 7 can flow to the weapon barrel 1 via the feed line 14 and the nozzle (s) 16 . The high gas pressure of, for example, approximately 5000 bar, which arises in the subsequent firing of the shot, pushes the coolant back, the gas pressure being reduced to the operating pressure of approximately 500 bar by friction in the nozzle 16 and only a small amount of coolant 7 flows back. As soon as the gas pressure in the gun barrel 1 has dropped, the coolant 7 is continuously injected into the gun barrel 1 by the operating pressure until another shot is fired. At the end of a series, valve 15 is closed again.

BezugszeichenlisteReference list

11
WaffenrohrGun barrel
22nd
VorderteilFront part
33rd
MündungsbremseMuzzle brake
44th
HinterteilRump
55
RevolvergehäuseTurret housing
66
Reservoirreservoir
77
Kühl-/SchmiermittelCoolant / lubricant
88th
Leitungmanagement
99
Rückschlagventilcheck valve
1010th
DruckzylinderImpression cylinder
1111
Kolbenpiston
1212th
HydraulikzylinderHydraulic cylinder
1313
HydraulikkolbenHydraulic pistons
1414
ZuleitungSupply
1515
VentilValve
1616
Düsejet
1717th
HülseSleeve
1818th
(erstes) Labyrinth(first) labyrinth
18'18 '
(zweites) Labyrinth(second) labyrinth
1919th
(erster) Kanal(first) channel
19'19 '
(zweiter) Kanal(second) channel
2020th
DüsenbohrungNozzle bore
2121
ZuleitungsbohrungSupply hole
2222
ZuleitungsbohrungSupply hole

Claims (5)

Verfahren zur Kühlung von Waffenrohren für Feuerwaffen, wobei einem Waffenrohr (1) über mindestens eine Zuleitung (14) und mindestens eine Düse (16) ein Kühlmittel (7) zugeführt wird,
dadurch gekennzeichnet, dass durch Aufziehen eines Hydraulikkolbens (13) das Kühlmittel (7) aus einem Reservoir (6) in einen Druckzylinder (10) gefördert wird, wobei die Zuleitung (14) zum Waffenrohr (1) geschlossen ist, dass danach durch Druckumkehr der Hydraulikkolben (13) in die entgegengesetzte Richtung bewegt und das Kühlmittel (7) im Druckzylinder (10) unter einen vorbestimmten Betriebsdruck gesetzt wird, dass vor dem Auslösen eines Feuerstosses die Zuleitung (14) geöffnet wird, so dass das Kühlmittel (7) über die Zuleitung (14) und die Düse (16) zum Waffenrohr (1) strömen kann, und dass jeweils das Kühlmittel (7) durch den bei der Schussabgabe entstehenden Gasdruck zurückgedrückt und nach dem Absinken des Gasdruckes auf den Betriebsdruck wieder in das Waffenrohr (1) eingespritzt wird. Method for cooling gun barrels for firearms, a coolant ( 7 ) being fed to a gun barrel ( 1 ) via at least one feed line ( 14 ) and at least one nozzle ( 16 ),
characterized, that the coolant ( 7 ) is conveyed from a reservoir ( 6 ) into a pressure cylinder ( 10 ) by pulling up a hydraulic piston ( 13 ), the feed line ( 14 ) to the weapon barrel ( 1 ) being closed, that the hydraulic pistons ( 13 ) are then moved in the opposite direction by reversing the pressure and the coolant ( 7 ) in the pressure cylinder ( 10 ) is placed under a predetermined operating pressure, that the supply line ( 14 ) is opened before the firing of a burst of fire, so that the coolant ( 7 ) can flow via the supply line ( 14 ) and the nozzle ( 16 ) to the weapon barrel ( 1 ), and that in each case the coolant ( 7 ) is pushed back by the gas pressure generated when the shot is fired and is injected back into the weapon barrel ( 1 ) after the gas pressure has dropped to the operating pressure. Verfahren nach Anspruch 1,
dadurch gekennzeichnet, dass der vorbestimmte Betriebsdruck zwischen dem Umgebungsdruck und dem Gasdruck beim Schiessen liegt. Method according to claim 1 ,
characterized, that the predetermined operating pressure lies between the ambient pressure and the gas pressure when firing. Vorrichtung zur Durchführung des Verfahrens nach Anspruch 1, wobei mindestens eine mit einer Zuleitung (14) für ein Kühlmittel (7) verbundene Düse (16) vorgesehen ist,
dadurch gekennnzeichnet, dass die Zuleitung (14) an einem Ende über die Düse (16) mit dem Waffenrohr (1) verbunden ist, und am anderen Ende über ein Ventil (15) mit einem Druckzylinder (10) in Verbindung steht, dass der Druckzylinder (10) über eine Leitung (8) und ein Rückschlagventil (9) mit einem Reservoir (6) verbunden ist, und dass im Druckzylinder (10) ein Kolben (11) geführt wird, der mit einem in einem Hydraulikzylinder (12) geführten Hydraulikkolben (13) fest verbunden ist. Device for carrying out the method according to claim 1 , wherein at least one nozzle ( 16 ) connected to a feed line ( 14 ) for a coolant ( 7 ) is provided,
characterized by that the feed line ( 14 ) is connected at one end via the nozzle ( 16 ) to the weapon barrel ( 1 ) and at the other end is connected to a pressure cylinder ( 10 ) via a valve ( 15 ), that the pressure cylinder ( 10 ) is connected to a reservoir ( 6 ) via a line ( 8 ) and a check valve ( 9 ), and that a piston ( 11 ) is guided in the pressure cylinder ( 10 ) and is firmly connected to a hydraulic piston ( 13 ) guided in a hydraulic cylinder ( 12 ). Vorrichtung nach Anspruch 3,
dadurch gekennzeichnet, dass die Düse (16) eine Hülse (17) aufweist, in der ein erstes Labyrinth (18) und gegebenfalls ein zweites Labyrinth (18') in Form eines oder mehrerer Einsatzstücke angeordnet ist, in welchem ein erster Kanal (19) und gegebenenfalls ein zweiter Kanal (19') vorgesehen ist. Device according to claim 3 ,
characterized, that the nozzle ( 16 ) has a sleeve ( 17 ) in which a first labyrinth ( 18 ) and optionally a second labyrinth ( 18 ' ) is arranged in the form of one or more insert pieces, in which a first channel ( 19 ) and optionally a second channel ( 19 ' ) is provided. Vorrichtung nach Anspruch 4,
dadurch gekennzeichnet, dass der erste Kanal (19) bzw. der zweite Kanal (19') labyrinthförmig ausgebildet ist. Device according to claim 4 ,
characterized, that the first channel ( 19 ) or the second channel ( 19 ' ) is labyrinthine.
EP99112908A 1998-07-14 1999-07-05 Method and device for the cooling of gun barrels Expired - Lifetime EP0973003B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH150498 1998-07-14
CH150498 1998-07-14

Publications (2)

Publication Number Publication Date
EP0973003A1 true EP0973003A1 (en) 2000-01-19
EP0973003B1 EP0973003B1 (en) 2002-09-18

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US (1) US6311602B1 (en)
EP (1) EP0973003B1 (en)
AT (1) ATE224528T1 (en)
DE (1) DE59902717D1 (en)

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US6889464B2 (en) 2003-06-04 2005-05-10 Michael K. Degerness Composite structural member
US20090049732A1 (en) * 2007-08-24 2009-02-26 Russell Dean Kissinger System and method for cooling the barrel of a firearm
RU2502933C1 (en) * 2012-05-29 2013-12-27 Открытое акционерное общество "Ижевский механический завод" Method for obtaining workpieces for reduction of barrels
US8677879B1 (en) 2012-06-01 2014-03-25 Jeff S. Gresham Firearm cooling device
US9933221B2 (en) * 2015-08-12 2018-04-03 Area 1 Sports, Llc Gun barrel cooler
CN109554531B (en) * 2018-12-11 2020-06-02 攀枝花钢城集团有限公司 Hydraulic cylinder cooling device of heating furnace pusher

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1112677A (en) * 1952-07-08 1956-03-16 Firearms training
DE3145764A1 (en) 1981-11-19 1983-06-01 Diehl GmbH & Co, 8500 Nürnberg COOLING DEVICE FOR ARM PIPES OF FIREARMS
EP0313856A1 (en) * 1987-10-28 1989-05-03 Oerlikon-Contraves AG Mechanism for cooling the interior of a gun barrel

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2774281A (en) * 1945-09-19 1956-12-18 Purdue University Injector pump for breech cooling of guns
US4062266A (en) * 1975-09-25 1977-12-13 Elmore Lester C Liquid propellant modular gun incorporating dual cam operation and internal water cooling
GB2222237A (en) * 1988-07-26 1990-02-28 Adrian Price Cooling of firearms
US5841057A (en) * 1997-10-09 1998-11-24 The United States Of America As Represented By The Secretary Of The Navy Method and apparatus for liquid injection to reduce gun barrel erosion

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1112677A (en) * 1952-07-08 1956-03-16 Firearms training
DE3145764A1 (en) 1981-11-19 1983-06-01 Diehl GmbH & Co, 8500 Nürnberg COOLING DEVICE FOR ARM PIPES OF FIREARMS
EP0313856A1 (en) * 1987-10-28 1989-05-03 Oerlikon-Contraves AG Mechanism for cooling the interior of a gun barrel

Also Published As

Publication number Publication date
ATE224528T1 (en) 2002-10-15
DE59902717D1 (en) 2002-10-24
US6311602B1 (en) 2001-11-06
EP0973003B1 (en) 2002-09-18

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