EP1745231B1 - Coupling device for a compressed gas cylinder - Google Patents

Coupling device for a compressed gas cylinder Download PDF

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Publication number
EP1745231B1
EP1745231B1 EP05755933A EP05755933A EP1745231B1 EP 1745231 B1 EP1745231 B1 EP 1745231B1 EP 05755933 A EP05755933 A EP 05755933A EP 05755933 A EP05755933 A EP 05755933A EP 1745231 B1 EP1745231 B1 EP 1745231B1
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EP
European Patent Office
Prior art keywords
plug
compressed gas
gas cylinder
coupling
coupling part
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.)
Active
Application number
EP05755933A
Other languages
German (de)
French (fr)
Other versions
EP1745231A1 (en
Inventor
Peter Kadow
Peter Kling
Thomas Kuba
Wolfgang Weber
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MSA Auer GmbH
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MSA Auer GmbH
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Publication date
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Publication of EP1745231A1 publication Critical patent/EP1745231A1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/04—Arrangement or mounting of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F17C2201/0104—Shape cylindrical
    • F17C2201/0109—Shape cylindrical with exteriorly curved end-piece
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F17C2205/0329—Valves manually actuated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0338—Pressure regulators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/037—Quick connecting means, e.g. couplings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/031—Air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0107—Single phase
    • F17C2223/0123—Single phase gaseous, e.g. CNG, GNC
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/03—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the pressure level
    • F17C2223/035—High pressure (>10 bar)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/06—Controlling or regulating of parameters as output values
    • F17C2250/0605—Parameters
    • F17C2250/0626—Pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/01—Applications for fluid transport or storage
    • F17C2270/0134—Applications for fluid transport or storage placed above the ground
    • F17C2270/0139—Fuel stations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/02—Applications for medical applications
    • F17C2270/025—Breathing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/07—Applications for household use
    • F17C2270/0745—Gas bottles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/87917—Flow path with serial valves and/or closures
    • Y10T137/87925—Separable flow path section, valve or closure in each
    • Y10T137/87941—Each valve and/or closure operated by coupling motion
    • Y10T137/87949—Linear motion of flow path sections operates both
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/87917—Flow path with serial valves and/or closures
    • Y10T137/87925—Separable flow path section, valve or closure in each
    • Y10T137/87965—Valve- or closure-operated by coupling motion

Definitions

  • the invention relates to a compressed gas cylinder with a coupling for connection to a to a consumer, a distributor or a filling station, respectivelysch widerbaren connecting member, in particular for SCBA.
  • the associated compressed air cylinders in the area of the cylinder valve have a connection piece, which is usually arranged perpendicular to the longitudinal axis of the compressed air cylinder, with an internal thread.
  • the design of the compressed air cylinders with such a connection piece is determined by standardization and not changeable.
  • the connection of the compressed air cylinder for example, with a pressure reducer or a manifold of a SCBA, so far causes difficulties, as the connecting piece of the bottle or rotatable by handwheel male thread fitting on pressure reducer or manifold when creating the heavy filled bottle, especially during rapid bottle change during an insert, can easily tilt. The time required anyway for the production of the screw connection is thereby even greater.
  • the invention is based on the object, starting from the standardized internal thread connection of the compressed gas cylinder to develop a coupling for the simple, fast and secure connection of the compressed gas cylinder to a consumer and for their safe handling in a decoupled state, even under difficult operating conditions.
  • the object is achieved with a trained according to the features of claim 1 injection gas cylinder.
  • the basic idea of the invention consists in the arrangement of a closure ring held in a decoupled state in an annular gap between a closing mushroom and a closing ring so that a limited gas volume flow can flow out when the compressed gas cylinder is open.
  • the coupling comprises the arrangement of a separate, between the compressed gas cylinder and, for example, the pressure reducer of a compressed air breathing device connected coupling part, which is screwed to the standardized connection of the compressed gas cylinder and can be connected via connector means in a simple manner and quickly and safely to the pressure reducer exemplified here.
  • a coupling is extremely advantageous because the connection is made only by nesting two plug-in elements.
  • the connector is designed so that each spring-loaded closure elements are arranged on the open sides of the two connecting elements, which cover the connection side in the non-coupled state and thus prevent contamination and allow anytime secure coupling process.
  • the closure elements are axially displaced during mating by the respective other connector means to release the gas passage.
  • the closure element acts on the coupling part connected to the compressed gas cylinder at the same time as a discharge, in such a way that accidentally opening the cylinder valve in the uncoupled state, a small compressed air volume flow flows through the spring-loaded closure element and thus accidents due to the gas suddenly emerging at high speed can be prevented.
  • locking means for locking the connector are also provided on the mutual plug-in elements, wherein the latching can be solved only by a manually executed rotational and longitudinal movement of an actuator provided on the coupling part and thus an automatic release of the connector is excluded. Due to the design as a plug connection in combination with the locking and locking elements, the coupling according to the invention satisfies the demands placed on such a connection for a high level of safety and rapid production of the connection.
  • a compressed air cylinder 2 in the usual way with a connecting piece 3 with internal thread 4 is provided.
  • a plug-in nipple 8 In a threaded bore 5 of the pressure reducer 6 is formed with a plug-in nipple 8 connecting member 7 is screwed.
  • the plug-in nipple 8 has a standing under the action of a helical compression spring 9 cap 10 which protects in conjunction with a seal 11, the pressure reducer 6 in the not connected to the compressed air cylinder 2 state from contamination.
  • the coupling part 12, with which the connection between the connecting piece 3 and the plug-in nipple 8 is produced, comprises a threaded sleeve 13, which is screwed into the connecting piece 3 by means of a handwheel 14.
  • the sealing in the connection piece takes place by means of a seal 15.
  • the coupling part 12 has a closing mushroom 17 which is formed in the air passage bore 16 and forms an annular gap 19 with a closing ring 18.
  • the annular gap 19 is closed by a locking ring 21 which is under the action of a helical compression spring 20 and thus reduces the risk of contamination.
  • This spring-loaded locking ring 21 forms together with the closing mushroom 17 but at the same time a discharge protection, which limits the amount of outflowing gas to about 5 l / min in uncoupled state inadvertent opening of the cylinder valve 1 and thereby limits the risk of accidents and which also allows that the coupling part 12th optionally can be separated from the pressurized compressed air cylinder 2.
  • Fig. 4 shows the coupling part 12 and the plug nipple 8 in coupled - nested - state.
  • Verrastkugeln 23 Only by two successive activities of the user, namely turning the movably mounted handwheel 14 and then pulling the handwheel 14 against a mounted on the coupling member 12 helical compression spring 24, the Verrastkugeln 23 are released to pull off the coupling part 12 of the connected to the pressure reducer 6 nipple 8 to be able to.
  • the small and handy coupling part 12 can be easily, quickly and safely connected to the compressed air cylinder 2 and remain at this.
  • the connection of the provided with the coupling part 12 compressed air cylinder 2 to the pressure reducer 6, a distributor element or the like., Which are formed with a corresponding plug-in nipple 8, is very simple and requires no time.
  • corresponding chamfers may be formed on both parts.
  • the nipple may also be connected to the compressed air cylinder while the coupling part is attached to the pressure reducer.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Lift Valve (AREA)

Abstract

A coupling for a compressed gas cylinder (2) includes a separate coupling part (12) that can be screwed to the standardized fitting (3) on the cylinder valve (1). The connection to the coupling means (7) of a pressure reducer (6) or the like is provided by plug-and-socket-type connecting means that can be plugged into each other, interlocked, and closed off by means of locking elements to prevent contamination from outside, the locking element provided on the coupling part at the same time forming a blow-off protection that allows only a limited gas flow when the cylinder valve is opened in uncoupled condition.

Description

Die Erfindung betrifft eine Druckgasflasche mit einer Kupplung zur Verbindung mit einem an einen Verbraucher, einen Verteiler oder eine Füllstation, auschließbaren Anschlussorgan, insbesondere für Pressluftatemgeräte.The invention relates to a compressed gas cylinder with a coupling for connection to a to a consumer, a distributor or a filling station, auszuschließbaren connecting member, in particular for SCBA.

Bei Pressluftatmer-Gerätesystemen weisen die zugehörigen Druckluftflaschen im Bereich des Flaschenventils einen zumeist senkrecht zur Längsachse der Druckluftflasche angeordneten Anschlussstutzen mit einem Innengewinde auf. Die Ausbildung der Druckluftflaschen mit einem derartigen Anschlussstutzen ist durch Normung festgelegt und nicht veränderbar. Die Verbindung der Druckluftflasche, beispielsweise mit einem Druckminderer oder einem Verteilerstück eines Pressluftatemgerätes, bereitet insofern Schwierigkeiten, als der Anschlussstutzen der Flasche bzw. das mittels Handrad drehbare Außengewinde-Anschlussstück am Druckminderer bzw. Verteilerstück beim Anlegen der schweren gefüllten Flasche, insbesondere beim schnellen Flaschenwechsel während eines Einsatzes, leicht verkanten kann. Der ohnehin für die Herstellung der Schraubverbindung erforderliche Zeitaufwand wird dadurch noch größer. Andererseits ist ein sicherer gasdichter Anschluss unter den beispielsweise während eines Feuerwehreinsatzes herrschenden Bedingungen nicht gewährleistet. Abgesehen von dem Sicherheitsrisiko kann das durch einen nicht dichten Anschluss nach dem Öffnen des Flaschenventils unter hohem Druck entweichende Gas die Dichtung des Flaschenanschlusses beschädigen.In compressed air breathing apparatus systems, the associated compressed air cylinders in the area of the cylinder valve have a connection piece, which is usually arranged perpendicular to the longitudinal axis of the compressed air cylinder, with an internal thread. The design of the compressed air cylinders with such a connection piece is determined by standardization and not changeable. The connection of the compressed air cylinder, for example, with a pressure reducer or a manifold of a SCBA, so far causes difficulties, as the connecting piece of the bottle or rotatable by handwheel male thread fitting on pressure reducer or manifold when creating the heavy filled bottle, especially during rapid bottle change during an insert, can easily tilt. The time required anyway for the production of the screw connection is thereby even greater. On the other hand, a secure gas-tight connection is not guaranteed under the conditions prevailing during a fire service, for example. Apart from the safety risk, leakage of gas through a non-tight connection after opening the cylinder valve under high pressure can damage the gasket of the cylinder connection.

Aus der DE 41 14 465 A1 ist eine Hydraulik-Steckkupplung mit einem Anschlussorgan und einem Steckkupplungsteil und an diesen vorgesehenen, federbelastete Verschlusselemente und Rastelemente aufweisenden Steckverbindungsmitteln bekannt. Ähnliche Kupplungen werden auch in der DE 23 33 620 A1 und der US 6 341 803 B1 beschrieben. Der Nachteil der bekannten Kupplungen besteht darin, dass in entkoppeltem Zustand bei versehentlicher Druckzufuhr an das Kupplungsteil aufgrund des mit hoher Geschwindigkeit austretenden Gases Personen- und Sachschäden auftreten können.From the DE 41 14 465 A1 is a hydraulic plug-in coupling with a connecting member and a plug-in coupling part and on this provided, spring-loaded closure elements and locking elements having connector means known. Similar clutches are also used in the DE 23 33 620 A1 and the US Pat. No. 6,341,803 B1 described. The disadvantage of the known couplings is that in uncoupled state in the event of accidental pressure supply to the coupling part due to the high-velocity gas passenger and property damage can occur.

Der Erfindung liegt die Aufgabe zugrunde, ausgehend von dem genormten Innengewindeanschluss der Druckgasflasche eine Kupplung für den auch unter schwierigen Einsatzbedingungen einfachen, schnellen und sicheren Anschluss der Druckgasflasche an einen Verbraucher und für deren sichere Handhabung auch in entkoppeltem Zustand zu entwickeln.The invention is based on the object, starting from the standardized internal thread connection of the compressed gas cylinder to develop a coupling for the simple, fast and secure connection of the compressed gas cylinder to a consumer and for their safe handling in a decoupled state, even under difficult operating conditions.

Erfindungsgemäß wird die Aufgabe mit einer gemäß den Merkmalen des Patentanspruchs 1 ausgebildeten Drückgasflasche gelöst.According to the invention the object is achieved with a trained according to the features of claim 1 injection gas cylinder.

Der Grundgedanke der Erfindung besteht in der Anordnung eines in entkoppeltem Zustand so in einem Ringspalt zwischen einem Schließpilz und einem Schließring gehaltenen Vershlussringes, dass bei geöffneter Druckgasflasche ein begrenzter Gasvolumenstrom abströmen kann.The basic idea of the invention consists in the arrangement of a closure ring held in a decoupled state in an annular gap between a closing mushroom and a closing ring so that a limited gas volume flow can flow out when the compressed gas cylinder is open.

Die Kupplung umfasst die Anordnung eines separaten, zwischen die Druckgasflasche und beispielsweise den Druckminderer eines Pressluftatemgerätes geschalteten Kupplungsteils, das mit dem genormten Anschluss des Druckgasflasche verschraubbar ist und das über Steckverbindungsmittel auf einfache Weise sowie schnell und sicher an den hier beispielhaft erwähnten Druckminderer anschließbar ist. Insbesondere beim Wechseln der Druckgasflaschen für Pressluftatemgeräte unter Einsatzbedingungen ist eine derartige Kupplung äußerst vorteilhaft, da der Anschluss lediglich durch Ineinanderstecken zweier Steckelemente erfolgt. Die Steckverbindung ist so ausgebildet, dass an den offenen Seiten der beiden Verbindungselemente jeweils federbelastete Verschlusselemente angeordnet sind, die in nicht gekoppeltem Zustand die Anschlussseite abdecken und somit Verschmutzungen verhindern und einen jederzeit sicheren Kopplungsvorgang gestatten. In gekoppeltem Zustand werden die Verschlusselemente beim Zusammenstecken durch das jeweils andere Steckverbindungsmittel axial verschoben, um den Gasdurchgang freizugeben. Das Verschlusselement an dem mit der Druckgasflasche verbundenen Kupplungsteil fungiert gleichzeitig als Abströmsicherung, und zwar derart, dass bei versehentlichem Öffnen des Flaschenventils in nicht gekuppeltem Zustand ein kleiner Druckluftvolumenstrom über das federbelastete Verschlusselement abströmt und somit Unfälle aufgrund des plötzlich mit hoher Geschwindigkeit austretenden Gases verhindert werden. Schließlich sind an den beiderseitigen Steckelementen auch noch Rastmittel zur Verriegelung der Steckverbindung vorgesehen, wobei die Verrastung nur durch eine manuell ausgeführte Dreh- und Längsbewegung eines am Kupplungsteil vorgesehenen Betätigungselements gelöst werden kann und ein selbsttätiges Lösen der Steckverbindung mithin ausgeschlossen ist. Aufgrund der Ausbildung als Steckverbindung in Kombination mit den Verschluss- und Rastelementen wird die erfindungsgemäße Kupplung den an einen derartigen Anschluss gestellten Anforderungen an eine hohe Sicherheit und eine schnelle Herstellung der Verbindung gerecht.The coupling comprises the arrangement of a separate, between the compressed gas cylinder and, for example, the pressure reducer of a compressed air breathing device connected coupling part, which is screwed to the standardized connection of the compressed gas cylinder and can be connected via connector means in a simple manner and quickly and safely to the pressure reducer exemplified here. In particular, when changing the compressed gas cylinders for SCBA under operating conditions, such a coupling is extremely advantageous because the connection is made only by nesting two plug-in elements. The connector is designed so that each spring-loaded closure elements are arranged on the open sides of the two connecting elements, which cover the connection side in the non-coupled state and thus prevent contamination and allow anytime secure coupling process. In the coupled state, the closure elements are axially displaced during mating by the respective other connector means to release the gas passage. The closure element acts on the coupling part connected to the compressed gas cylinder at the same time as a discharge, in such a way that accidentally opening the cylinder valve in the uncoupled state, a small compressed air volume flow flows through the spring-loaded closure element and thus accidents due to the gas suddenly emerging at high speed can be prevented. Finally, locking means for locking the connector are also provided on the mutual plug-in elements, wherein the latching can be solved only by a manually executed rotational and longitudinal movement of an actuator provided on the coupling part and thus an automatic release of the connector is excluded. Due to the design as a plug connection in combination with the locking and locking elements, the coupling according to the invention satisfies the demands placed on such a connection for a high level of safety and rapid production of the connection.

Aus den Unteransprüchen ergeben sich weitere Merkmale und vorteilhafte Ausgestaltungen der Erfindung.From the dependent claims, further features and advantageous embodiments of the invention.

Ein Ausführungsbeispiel der Erfindung wird anhand der Zeichnung näher erläutert. Es zeigen:

Fig. 1
eine Seitenansicht der Kupplung zwischen einer Druckluftflasche (Druckgasflasche) und einem Druckminderer eines Pressluftatemgerätes in auseinandergezogener Lage der einzelnen Teile;
Fig. 2
die Kupplung zwischen Druckluftflasche und Druckminderer nach Fig. 1 in montiertem, jedoch nicht gekuppeltem Zustand;
Fig. 3
eine Schnittansicht der Kupplungselemente in nicht gekuppeltem Zustand; und
Fig. 4
eine Schnittansicht der Kupplungselemente im Betriebszustand.
An embodiment of the invention will be explained in more detail with reference to the drawing. Show it:
Fig. 1
a side view of the coupling between a compressed air cylinder (gas cylinder) and a pressure reducer of a SCBA in exploded position of the individual parts;
Fig. 2
the coupling between compressed air cylinder and pressure reducer after Fig. 1 in mounted, but not coupled condition;
Fig. 3
a sectional view of the coupling elements in uncoupled state; and
Fig. 4
a sectional view of the coupling elements in the operating state.

Gemäß Fig. 1 und 2 ist das Flaschenventil 1 einer Druckluftflasche 2 in üblicher Weise mit einem Anschlussstutzen 3 mit Innengewinde 4 versehen. In einer Gewindebohrung 5 des Druckminderers 6 ist ein mit einem Stecknippel 8 ausgebildetes Anschlussorgan 7 verschraubt. Der Stecknippel 8 weist eine unter der Wirkung einer Schraubendruckfeder 9 stehende Verschlusskappe 10 auf, die in Verbindung mit einer Dichtung 11 den Druckminderer 6 in dem nicht an die Druckluftflasche 2 angeschlossenen Zustand vor Verschmutzung schützt. Das Kupplungsteil 12, mit dem die Verbindung zwischen dem Anschlussstutzen 3 und dem Stecknippel 8 herstellt wird, umfasst eine Gewindehülse 13, die in dem Anschlussstutzen 3 mittels eines Handrades 14 verschraubbar ist. Die Abdichtung im Anschlussstutzen erfolgt mittels einer Dichtung 15. Das Kupplungsteil 12 weist einen in der Luftdurchgangsbohrung 16 ausgebildeten Schließpilz 17 auf, der mit einem Schließring 18 einen Ringspalt 19 bildet. In dem nicht mit dem Stecknippel 8 gekoppelten Zustand ist der Ringspalt 19 durch einen unter der Wirkung einer Schraubendruckfeder 20 stehenden Verschlussring 21 verschlossen und verringert somit die Verschmutzungsgefahr. Dieser federbelastete Verschlussring 21 bildet zusammen mit dem Schließpilz 17 aber gleichzeitig eine Abströmsicherung, die in nicht gekoppeltem Zustand bei unbeabsichtigtem Öffnen des Flaschenventils 1 die Menge des abströmenden Gases auf ca. 5 l/min begrenzt und dadurch die Unfallgefahr einschränkt und die es außerdem ermöglicht, dass das Kupplungsteil 12 gegebenenfalls von der unter Druck stehenden Druckluftflasche 2 getrennt werden kann. Fig. 4 zeigt das Kupplungsteil 12 und den Stecknippel 8 in gekoppeltem - ineinander gestecktem - Zustand. Dabei ist die Verschlusskappe 10 durch den Schließpilz 17 entgegen der Wirkung der Schraubendruckfeder 9 in der Luftdurchgangsbohrung 22 des Stecknippels 8 zurückgedrückt, während der Verschlussring 21 durch den Stecknippel 8 in entgegengesetzter Richtung entgegen der Wirkung der Schraubendruckfeder 20 zurückgedrückt ist. Dadurch ist bei geöffnetem Flaschenventil 1 der Weg für die Druckluft von der Druckluftflasche 2 zum Druckminderer 6 frei. Aus Fig. 4 ist erkennbar, dass der Stecknippel 8 mittels am Innenumfang des Handrades 14 gehaltener Verrastkugeln 23 und einer am Außenumfang des Stecknippels 8 verlaufenden Rastnut 25 in dem Kupplungsteil 12 arretiert ist. Erst durch zwei aufeinanderfolgende Tätigkeiten des Benutzers, nämlich Drehen des beweglich gelagerten Handrades 14 und anschließendes Ziehen des Handrades 14 entgegen einer auf dem Kupplungsteil 12 angebrachten Schraubendruckfeder 24 werden die Verrastkugeln 23 freigegeben, um das Kupplungsteil 12 von dem mit dem Druckminderer 6 verbundenen Stecknippel 8 abziehen zu können.According to Fig. 1 and 2 is the cylinder valve 1 a compressed air cylinder 2 in the usual way with a connecting piece 3 with internal thread 4 is provided. In a threaded bore 5 of the pressure reducer 6 is formed with a plug-in nipple 8 connecting member 7 is screwed. The plug-in nipple 8 has a standing under the action of a helical compression spring 9 cap 10 which protects in conjunction with a seal 11, the pressure reducer 6 in the not connected to the compressed air cylinder 2 state from contamination. The coupling part 12, with which the connection between the connecting piece 3 and the plug-in nipple 8 is produced, comprises a threaded sleeve 13, which is screwed into the connecting piece 3 by means of a handwheel 14. The sealing in the connection piece takes place by means of a seal 15. The coupling part 12 has a closing mushroom 17 which is formed in the air passage bore 16 and forms an annular gap 19 with a closing ring 18. In the state not coupled to the plug-in nipple 8, the annular gap 19 is closed by a locking ring 21 which is under the action of a helical compression spring 20 and thus reduces the risk of contamination. This spring-loaded locking ring 21 forms together with the closing mushroom 17 but at the same time a discharge protection, which limits the amount of outflowing gas to about 5 l / min in uncoupled state inadvertent opening of the cylinder valve 1 and thereby limits the risk of accidents and which also allows that the coupling part 12th optionally can be separated from the pressurized compressed air cylinder 2. Fig. 4 shows the coupling part 12 and the plug nipple 8 in coupled - nested - state. The closure cap 10 is pushed back by the closing mushroom 17 against the action of the helical compression spring 9 in the air passage bore 22 of the plug nipple 8, while the closure ring 21 is pushed back by the nipple 8 in the opposite direction against the action of the helical compression spring 20. As a result, with the cylinder valve 1 open, the path for the compressed air from the compressed air cylinder 2 to the pressure reducer 6 is free. Out Fig. 4 It can be seen that the plug-in nipple 8 is locked in the coupling part 12 by means of latching balls 23 held on the inner circumference of the hand wheel 14 and a latching groove 25 extending on the outer circumference of the plug-in nipple 8. Only by two successive activities of the user, namely turning the movably mounted handwheel 14 and then pulling the handwheel 14 against a mounted on the coupling member 12 helical compression spring 24, the Verrastkugeln 23 are released to pull off the coupling part 12 of the connected to the pressure reducer 6 nipple 8 to be able to.

Das kleine und handliche Kupplungsteil 12 kann einfach, schnell und sicher mit der Druckluftflasche 2 verbunden werden und an dieser verbleiben. Das Anschließen der mit dem Kupplungsteil 12 versehenen Druckluftflasche 2 an den Druckminderer 6, ein Verteilerelement oder dgl., die mit einem entsprechenden Stecknippel 8 ausgebildet sind, ist denkbar einfach und erfordert keinen Zeitaufwand. Um das ohnehin einfache Zusammenstecken von Kupplungsteil 12 und Stecknippel 8 weiter zu erleichtern, können an beiden Teilen entsprechende Einführschrägen ausgebildet sein.The small and handy coupling part 12 can be easily, quickly and safely connected to the compressed air cylinder 2 and remain at this. The connection of the provided with the coupling part 12 compressed air cylinder 2 to the pressure reducer 6, a distributor element or the like., Which are formed with a corresponding plug-in nipple 8, is very simple and requires no time. In order to facilitate the already simple mating of coupling part 12 and plug nipple 8 further, corresponding chamfers may be formed on both parts.

Zudem ist eine Drehbewegung zwischen Druckluftflasche 2 und Druckminderer 6, genauer gesagt zwischen Kupplungsteil 12 und Stecknippel 8 möglich. Ein selbsttätiges Lösen der Steckverbindung ist aufgrund der Arretierung mittels Verrastkugeln 23 und von zwei manuell - mit einer Hand - durchführbaren Aktionen des Benutzers zum Entrasten, d. h. der Dreh- und Längsbewegung des Handrades 14 zur Freigabe der Verrastung, nicht möglich. Sowohl der Stecknippel 8 als auch das Kupplungsteil 12 sind durch den Verschlussring 21 bzw. die Verschlusskappe 10 vor Verschmutzung geschützt. Andererseits ermöglicht der federbelastete Verschlussring 21 in nicht gekoppeltem Zustand bei geöffnetem Flaschenventil 1 nur ein langsames Abströmen von Luft, so dass beim versehentlichen Öffnen des Flaschenventils 1 in ungekoppeltem Zustand keine Unfallgefahr besteht und schließlich auch die Möglichkeit der Demontage des Kupplungsteils 12 bei einer zunächst noch mit Druckluft gefüllten Druckluftflasche gegeben ist.In addition, a rotational movement between the compressed air cylinder 2 and pressure reducer 6, more precisely between coupling part 12 and plug nipple 8 is possible. An automatic release of the connector is due to the locking means Verrastkugeln 23 and two manually - with one hand - feasible actions of the user to unlatch, d. H. the rotational and longitudinal movement of the handwheel 14 to release the locking, not possible. Both the plug-in nipple 8 and the coupling part 12 are protected by the locking ring 21 and the cap 10 from contamination. On the other hand, allows the spring-loaded locking ring 21 in the uncoupled state with open cylinder valve 1 only a slow outflow of air, so that accidental opening of the cylinder valve 1 in uncoupled state no risk of accidents and finally the possibility of disassembly of the coupling member 12 at a first still with Compressed air filled compressed air cylinder is given.

Die Erfindung ist nicht auf die zuvor beschriebene Ausführungsform beschränkt. Beispielsweise kann der Stecknippel auch mit der Druckluftflasche verbunden sein, während das Kupplungsteil an dem Druckminderer angebracht ist.The invention is not limited to the embodiment described above. For example, the nipple may also be connected to the compressed air cylinder while the coupling part is attached to the pressure reducer.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Flaschenventilcylinder valve
22
DruckluftflascheDruckluftflasche
33
Anschlussstutzen v. 2Connecting piece v. 2
44
Innengewinde v. 3Internal thread v. 3
55
Gewindebohrung v. 6Threaded hole v. 6
66
Druckminderer, Verteilerstück oder dgl.Pressure reducer, manifold or the like.
77
Anschlussorgan v. 6Connecting organ v. 6
88th
StecknippelStecknippel
99
Schraubendruckfeder v. 8Helical compression spring v. 8th
1010
Verschlusskappe v. 8Cap v. 8th
1111
Dichtung v. 8Seal v. 8th
1212
Kupplungsteilcoupling part
1313
Gewindehülse v. 12Threaded sleeve v. 12
1414
Handradhandwheel
1515
Dichtung v. 13Seal v. 13
1616
Luftdurchgangsbohrung v. 12Air passage hole v. 12
1717
Schließpilz v. 12Close mushroom v. 12
1818
Schließring v. 12Locking ring v. 12
1919
Ringspalt zw. 17/18Annular gap between 17/18
2020
Schraubendruckfeder in 16Helical compression spring in 16
2121
Verschlussringlock ring
2222
Luftdurchgangsbohrung v. 8Air passage hole v. 8th
2323
VerrastkugelnVerrastkugeln
2424
Schraubendruckfeder v. 14Helical compression spring v. 14
2525
Rastnutlocking groove

Claims (7)

  1. A compressed gas cylinder with a coupling for connection with a coupling means (7) connectable to a consumer (6), a manifold, or a filling station, especially for compressed air breathing apparatuses wherein the compressed air cylinder (2) comprises a cylinder valve (1) with a standardized fitting (3), and a separate coupling part (12) that can be screwed into or onto the fitting (3) of the compressed gas cylinder (2) can be coupled with the consumer (6), the manifold or filling station via plug-and-socket-type connecting means (17, 18; 8) provided on the coupling part (12) and the coupling means (7) which include, on the coupling part (12), spring-loaded locking means (20, 21) that provide blow-off protection and protection from contamination in uncoupled condition, and, on the coupling means (7), spring-loaded locking elements (9, 10) and means (23, 25) for interlocking the plug and socket connection in coupled condition,
    characterized in that
    the plug-and-socket-type connecting means (17, 18; 8) of the coupling part (12) include a plug (17) located in a closing ring (18) and leaving an annular clearance (19) and a locking ring (21) that in uncoupled condition is held between the plug (17) and the closing ring (18) is located in the annular clearance so that a limited volumetric flow of gas can flow off when the compressed gas cylinder (2) is open.
  2. The compressed gas cylinder according to claim 1, characterized in that the coupling means (7) comprises a hollow barb nipple (8) as a plug-and-socket-type connecting means, the outer wall of which is guided in coupled condition between the plug-and-socket-type connecting means (17, 18) in the coupling part (12) and can be locked in a locking groove (25) by means of latching balls (23) in the coupling part (12).
  3. The compressed gas cylinder according to claim 2, characterized in that the latching balls (23) are in a functional connection with a hand wheel (14) located on the perimeter of the coupling part (12) that can be moved in axial direction against the action of a helical compression spring (24) and rotated so that turning and moving said hand wheel (14) releases the latching balls (23).
  4. The compressed gas cylinder according to claim 1, characterized in that the locking elements in the barb nipple (8) include at its free end a cap (10) held against a gasket (11) by the action of a helical compression spring (9) in uncoupled condition that is moved in coupled condition by the action of the plug-and-socket-type connecting means (18) in the coupling part (12) into the barb nipple (8), thereby opening the gas passage.
  5. The compressed gas cylinder according to claim 1, characterized in that the locking ring (21) that is located in the annular clearance (19) and held in place in uncoupled condition by the action of a helical compression spring (20) for blow-off protection and protection against contamination, is moved out of the annular clearance in coupled condition by the action of the plug-and-socket-type connecting means (8) of the coupling means (7), thereby completely opening the gas passage.
  6. The compressed gas cylinder according to claim 1, characterized in that the coupling means (7) is designed as a separate component and can be screwed together with the consumer or manifold.
  7. The compressed gas cylinder according to any one of the preceding claims, characterized in that the coupling means (7) that is provided with the barb nipple (8) and the coupling part (12) may each be connected to the compressed gas cylinder (1) as well as to a consumer (6), manifold, or filling station.
EP05755933A 2004-05-13 2005-05-09 Coupling device for a compressed gas cylinder Active EP1745231B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200410024597 DE102004024597B4 (en) 2004-05-13 2004-05-13 Coupling for a compressed gas cylinder
PCT/DE2005/000874 WO2005111478A1 (en) 2004-05-13 2005-05-09 Coupling device for a compressed gas cylinder

Publications (2)

Publication Number Publication Date
EP1745231A1 EP1745231A1 (en) 2007-01-24
EP1745231B1 true EP1745231B1 (en) 2008-04-16

Family

ID=34971450

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05755933A Active EP1745231B1 (en) 2004-05-13 2005-05-09 Coupling device for a compressed gas cylinder

Country Status (10)

Country Link
US (1) US7757712B2 (en)
EP (1) EP1745231B1 (en)
JP (1) JP4547003B2 (en)
CN (1) CN100507326C (en)
AT (1) ATE392576T1 (en)
AU (1) AU2005243566B2 (en)
DE (2) DE102004024597B4 (en)
ES (1) ES2306168T3 (en)
RU (1) RU2351831C2 (en)
WO (1) WO2005111478A1 (en)

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EP1873607B1 (en) 2006-06-30 2017-04-12 Luxembourg Patent Company S.A. Pressure regulator for high pressure gas
CN101832468B (en) * 2010-05-21 2011-09-07 北京北机机电工业有限责任公司 Cylinder filling adaptor
US8926632B2 (en) * 2011-06-08 2015-01-06 Zimmer Surgical, Inc. Dermatome swivel double acting valve
KR101346545B1 (en) * 2011-09-23 2013-12-31 주식회사 화산 Gas container Valve for preventing gas explosion and its assembly method
CN103157203B (en) * 2012-11-09 2015-09-16 上海宝亚安全装备有限公司 A kind of Quick Connect Kit
US9702505B2 (en) * 2013-03-15 2017-07-11 Worthington Cylinders Corp. Cryogenic fluid cylinder
CA3105416C (en) * 2018-08-14 2023-09-19 CleanTech Swiss AG Fitting for liquid gas bottles
CN113898872A (en) * 2021-10-18 2022-01-07 詹清楚 Safe and leak-proof oxygen hose transportation equipment

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Also Published As

Publication number Publication date
JP4547003B2 (en) 2010-09-22
DE502005003750D1 (en) 2008-05-29
CN1961171A (en) 2007-05-09
AU2005243566B2 (en) 2009-03-19
AU2005243566A1 (en) 2005-11-24
JP2007537401A (en) 2007-12-20
WO2005111478A1 (en) 2005-11-24
ATE392576T1 (en) 2008-05-15
RU2351831C2 (en) 2009-04-10
RU2006144103A (en) 2008-06-20
DE102004024597B4 (en) 2006-02-09
EP1745231A1 (en) 2007-01-24
ES2306168T3 (en) 2008-11-01
DE102004024597A1 (en) 2005-12-08
US20080236687A1 (en) 2008-10-02
CN100507326C (en) 2009-07-01
US7757712B2 (en) 2010-07-20

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