EP2115343A1 - Pressure container for storing liquid or gaseous media - Google Patents

Pressure container for storing liquid or gaseous media

Info

Publication number
EP2115343A1
EP2115343A1 EP08707396A EP08707396A EP2115343A1 EP 2115343 A1 EP2115343 A1 EP 2115343A1 EP 08707396 A EP08707396 A EP 08707396A EP 08707396 A EP08707396 A EP 08707396A EP 2115343 A1 EP2115343 A1 EP 2115343A1
Authority
EP
European Patent Office
Prior art keywords
pressure vessel
collar
metal
metal cylinder
metal body
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.)
Granted
Application number
EP08707396A
Other languages
German (de)
French (fr)
Other versions
EP2115343B1 (en
Inventor
Dietmar Müller
Jens Beissner
Michael Kleschinski
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.)
Xperion GmbH
Original Assignee
Xperion GmbH
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
Family has litigation
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Application filed by Xperion GmbH filed Critical Xperion GmbH
Publication of EP2115343A1 publication Critical patent/EP2115343A1/en
Application granted granted Critical
Publication of EP2115343B1 publication Critical patent/EP2115343B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
    • F17C1/14—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge constructed of aluminium; constructed of non-magnetic steel
    • 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
    • F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
    • F17C1/16—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge constructed of plastics materials
    • 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
    • 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
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0602—Wall structures; Special features thereof
    • F17C2203/0604—Liners
    • 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
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0602—Wall structures; Special features thereof
    • F17C2203/0612—Wall structures
    • F17C2203/0614—Single wall
    • F17C2203/0619—Single wall with two layers
    • 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
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0634—Materials for walls or layers thereof
    • F17C2203/0636—Metals
    • 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
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0634—Materials for walls or layers thereof
    • F17C2203/0658—Synthetics
    • 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
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0634—Materials for walls or layers thereof
    • F17C2203/0658—Synthetics
    • F17C2203/0663—Synthetics in form of fibers or filaments
    • 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
    • F17C2205/0305—Bosses, e.g. boss collars
    • 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
    • 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
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/01—Improving mechanical properties or manufacturing
    • F17C2260/013—Reducing manufacturing time or effort

Definitions

  • Pressure vessel for storing liquid or gaseous media
  • the invention relates to a pressure vessel for storing liquid or gaseous media, comprising a plastic core container having at least one cylindrical collar, which is arranged in the radial gap between a metal cylinder inserted therein and a metal body enclosing the collar on the outside with a radially outwardly projecting flange the metal cylinder has at least one radially outwardly open groove into which a seal pressed against the collar O-ring seal is inserted, wherein a metal fitting is screwed with an external thread in the metal cylinder facing away from the end of the metal body and wherein the plastic core container and the Flange of a support shell of a fiber composite material are at least partially enclosed.
  • a plastic core container having at least one cylindrical collar, which is arranged in the radial gap between a metal cylinder inserted therein and a metal body enclosing the collar on the outside with a radially outwardly projecting flange the metal cylinder has at least one radially outwardly open groove into which
  • Such a pressure vessel is known from EP 1248929B1.
  • a multi-part fitting and a plurality of O-ring seals have been used, which made the production more expensive. Nevertheless, the tightness and durability of the tightness were not very satisfactory. In particular, the assembly was very complex and a subsequent replacement of an O-ring not possible.
  • the invention is based on the object to further develop such a pressure vessel such that there is a better quality and more durable tightness with low production costs.
  • the metal cylinder forms an integral part of the metal body screwed into the metal body from the outside, immediately adjoins the external thread and that the metal cylinder has a stepped smaller outer diameter than the metal fitting.
  • the metal fitting may for example be formed by a valve which is screwed directly into the pressure vessel.
  • the at least one O-ring in the still unstressed, but inserted into the groove state has an outer diameter which is smaller than that
  • the construction according to the invention allows a subsequent insertion and optionally replacement of the at least one O-ring - seal-carrying metal fitting in the metal body. Manufacturing technology, this is a great advantage. It mainly allows the number of O-ring seals in
  • a single O-ring seal is sufficient to achieve the object of the invention.
  • the metal cylinder has at least two in the direction of the interior of the pressure vessel consecutive grooves in the respective O-rings are sealingly insertable and engageable with the collar.
  • the liner can also consist of dissimilar materials such as metal.
  • the at least one O-ring is advantageously made of elastomeric material in order to be able to better compensate for settling phenomena of a liner consisting of polymeric and in particular of thermoplastic material.
  • O-ring seals made of dissimilar materials can nevertheless also be used, for example those made of PTFE. In addition to a good chemical resistance, such O - ring seals are characterized by a good permanent elasticity due to the memory effect of the PTFE itself.
  • At least one O-ring seal presses a cylindrical portion of the collar with a cylindrical inner portion of the metal body.
  • the collar can not evade the forces exerted by the O-ring - seal in an uncontrollable manner in such a design. This is a great advantage for a permanently good sealing result.
  • At least one O-ring seal presses a provided with an external thread and screwed into the metal body portion of the collar of the liner between the metal body and the metal cylinder.
  • the free spaces that always exist in the area of threaded connections enable the thermoplastic liner material of the collar to fill in the free spaces through flow processes under the effect of adial compression by the permanently elastic O-ring seal made of an elastomer material or PTFE. This helps to prevent overloads and improve the durability of the seal.
  • the metal cylinder is suitably tapered conically at the end facing the interior to an inner diameter which is as large and expediently smaller than the inner diameter of the collar. It can therefore easily be added later without fear of damaging the collar.
  • the external thread can end at the end facing the cylindrical surface in a conical surface delimited by the metal cylinder.
  • an investment contact with the collar of this is additionally pressed by the conical surface with the inner wall of the metal body and in particular avoided that results in a good for a good seal, uncontrolled deformation of the collar.
  • the collar can end in a hollow conical surface to further improve the effect on the effect at the end facing away from the interior.
  • the metal body may have a flange which engages over the metal cylinder at least at the end facing the interior and expediently over its entire axial length.
  • the flange may have a triangular outwardly tapered profile.
  • the embedding in the reinforcement made of fiber reinforced plastic of the pressure vessel succeeds thereby particularly well. For this it is especially important that the outer and inner sides of the opposing surfaces smoothly merge into each other while avoiding gradations.
  • the metal body may be provided at the end facing away from the interior of the pressure vessel end with a collar, which engages over the support shell directly adjacent. Relative displacements, which can initiate destruction, are thereby additionally prevented.
  • the support collar can be provided with a hexagon to allow the attachment of a wrench and unscrew and replace the metal fitting on site if necessary without problems.
  • FIG. 1 shows a longitudinal section of a pressure vessel in the region of the metal fitting.
  • the pressure vessel shown serves for the storage of liquid or gaseous media. It comprises a plastic core container 1 with a cylindrical collar 1.1, which is arranged in the radial gap between a metal cylinder 2 inserted therein and a metal body 3 surrounding the collar 1.1 on the outside with a radially outwardly projecting flange 3.1, wherein the metal cylinder at least one radially outward has an open groove 4, in which a sealing pressed against the collar 1.1 O-ring - seal 5 is inserted, wherein a metal fitting 2.1 is screwed with an external thread 2.2 in the remote from the metal cylinder end of the metal body 3 and wherein the plastic core container. 1 and the flange 3.1 are completely enclosed by a supporting sheath 7 made of a fiber composite material.
  • the metal cylinder 2 forms an integral part of the valve 2.1, immediately adjoins the external thread 2.2 and the metal cylinder 2 has a stepped smaller outer diameter than the external thread 2.2.
  • the metal cylinder 2 is penetrated by a bore, not shown, in the longitudinal direction through which a pressurized medium is fed into the interior 6 of the pressure vessel and can be removed therefrom.
  • the pressure vessel consists in the simplest case of only five parts.
  • the metal cylinder 2 has in the direction of the interior 6 of the pressure vessel successive grooves 4, in which each O-ring - seals 5 are inserted sealingly in radially outwardly open grooves. They cause in this tandem arrangement due to labyrinth effects a particularly effective sealing effect.
  • the space 6 to be sealed facing at least one, permanently elastic O-ring seal 5 presses a cylindrical portion of the thermoplastic collar 1.1 with a cylindrical inner portion of the metal body 3. Since the collar by the O-ring seal radially opposing support on a cylindrical surface do not dodge can result in the long term, a particularly good controllable sealing effect.
  • the metal cylinder 2 is conically tapered at the end facing the inner space 6 to an inner diameter which is smaller than the inner diameter of the collar 1.1 in order to facilitate the insertion of the metal cylinder 2 into the collar 1.1.
  • the external thread 2.2 ends at the cylinder surface 2 facing the end in a limited by the metal cylinder 2 conical surface 2.4, which also facilitates the insertion of the metal cylinder 2 in the collar and avoids undesirable deformations in a mutual contact.
  • the metal body 3 has a flange 3.1, which engages over the metal cylinder 2 at the end facing the interior 6 about 50% of the axial length.
  • the flange 3.1 causes an additional radial stiffening of the metal body 3 in the area of important for the sealing O-ring - seals.
  • the flange 3.1 has a triangular outwardly tapered profile to allow its seamless integration into the existing of a fiber composite support sheath 7.
  • the metal body 3 is provided at the end facing away from the interior .6 of the pressure vessel with an annular collar 3.3, the support shell. 7 immediately overlaps. The support shell 7 is thereby additionally fixed relative to the metal body 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

A pressurized container for liquid or gas has a plastic body (1) with a cylindrical stub (1.1) neck into which is fitted a cylindrical metal connection (2) with one or two grooves (4) to hold sealing O-rings. The cylindrical metal connection is connected to an outer connection (2.1) as a one piece construction is secured into an outer metal connection (3) via a threaded section (2.2). The clamped fitting also secures an outer fiberglass case (7) fitted around the container.

Description

Druckbehälter zur Speicherung von flüssigen oder gasförmigen Medien Pressure vessel for storing liquid or gaseous media
Beschreibungdescription
Die Erfindung betrifft einen Druckbehälter zur Speicherung von flüssigen oder gasförmigen Medien, umfassend einen Kunststoffkernbehälter mit zumindest einem zylindrischen Kragen, der in dem radialen Zwischenraum zwischen einem darin eingesetzten Metalizylinder und einem den Kragen außenseitig umschließenden Metallkörper mit einem radial nach außen vorstehenden Flansch angeordnet ist, wobei der Metalizylinder zumindest eine radial nach außen offene Nut aufweist, in die eine dichtend an den Kragen angepresste O- Ring - Dichtung eingesetzt ist, wobei eine Metallarmatur mit einem Außengewinde in das von dem Metalizylinder abgewandte Ende des Metallkörpers eingeschraubt ist und wobei der Kunststoffkernbehälter und der Flansch von einer Stützhülle aus einem Faserverbundstoff zumindest anteilig umschlossen sind. Stand der TechnikThe invention relates to a pressure vessel for storing liquid or gaseous media, comprising a plastic core container having at least one cylindrical collar, which is arranged in the radial gap between a metal cylinder inserted therein and a metal body enclosing the collar on the outside with a radially outwardly projecting flange the metal cylinder has at least one radially outwardly open groove into which a seal pressed against the collar O-ring seal is inserted, wherein a metal fitting is screwed with an external thread in the metal cylinder facing away from the end of the metal body and wherein the plastic core container and the Flange of a support shell of a fiber composite material are at least partially enclosed. State of the art
Ein solcher Druckbehälter ist aus der EP 1248929B1. Dabei sind im Bereich des Kragens eine mehrteilige Armatur und mehrere O - Ring - Dichtungen zur Anwendung gelangt, was die Herstellung verteuerte. Dennoch waren die Dichtheit und die Dauerhaftigkeit der Dichtheit nur wenig befriedigend. Insbesondere war die Montage sehr aufwändig und ein nachträglicher Austausch des einen O-Rings nicht möglich.Such a pressure vessel is known from EP 1248929B1. In this case, in the region of the collar, a multi-part fitting and a plurality of O-ring seals have been used, which made the production more expensive. Nevertheless, the tightness and durability of the tightness were not very satisfactory. In particular, the assembly was very complex and a subsequent replacement of an O-ring not possible.
Darstellung der ErfindungPresentation of the invention
Der Erfindung liegt die Aufgabe zu Grunde, einen solchen Druckbehälter derart weiter zu entwickeln, dass sich bei geringem Herstellaufwand eine qualitativ bessere und dauerhaftere Dichtigkeit ergibt.The invention is based on the object to further develop such a pressure vessel such that there is a better quality and more durable tightness with low production costs.
Diese Aufgabe wird erfindungsgemäß bei einem Druckbehälter der eingangs genannten Art mit den kennzeichnenden Merkmalen von Anspruch 1 gelöst. Auf vorteilhafte Ausgestaltungen nehmen die Unteransprüche Bezug.This object is achieved with a pressure vessel of the type mentioned above with the characterizing features of claim 1. In advantageous embodiments, the dependent claims relate.
Demgemäss ist es erfindungsgemäß vorgesehen, dass der Metalizylinder einen einstückigen Bestandteil der in den Metallkörper von außen eingeschraubten Metallarmatur bildet, sich unmittelbar an das Außengewinde anschließt und dass der Metalizylinder einen abgestuft kleineren Außendurchmesser hat als die Metallarmatur. Die Metallarmatur kann beispielsweise durch ein Ventil gebildet sein, das unmittelbar in den Druckbehälter eingeschraubt wird.Accordingly, it is provided according to the invention that the metal cylinder forms an integral part of the metal body screwed into the metal body from the outside, immediately adjoins the external thread and that the metal cylinder has a stepped smaller outer diameter than the metal fitting. The metal fitting may for example be formed by a valve which is screwed directly into the pressure vessel.
Zweckmäßig hat der zumindest eine O-Ring im noch unverspannten, aber in die Nut eingefügten Zustand einen Außendurchmesser, der kleiner ist als derSuitably, the at least one O-ring in the still unstressed, but inserted into the groove state has an outer diameter which is smaller than that
Innendurchmesser des Innengewindes des Metallkörpers, in das die Metallarmatur einschraubbar ist. Hierdurch werden Beschädigungen des mindestens einen O-Rings beim Einfügen und Einschrauben der Metallarmatur in den Metallkörper verhindert.Inner diameter of the internal thread of the metal body into which the metal fitting can be screwed. This will damage the prevents at least one O-ring when inserting and screwing the metal fitting into the metal body.
Die erfindungsgemäße Konstruktion ermöglicht ein nachträgliches Einfügen und gegebenenfalls Austauschen der den mindestens eine O-Ring - Dichtung tragenden Metallarmatur in den Metallkörper. Fertigungstechnisch ist dies von großem Vorteil. Es ermöglicht vor allem, die Anzahl der O-Ring - Dichtungen inThe construction according to the invention allows a subsequent insertion and optionally replacement of the at least one O-ring - seal-carrying metal fitting in the metal body. Manufacturing technology, this is a great advantage. It mainly allows the number of O-ring seals in
Abhängigkeit von dem jeweiligen Verwendungszweck zu ändern und O-Ring -To change depending on the intended use and O-ring -
Dichtungen auszutauschen oder an einer veränderten Stelle neu zu montieren, wenn Undichtigkeiten festgestellt werden.Replace seals or remount at a different location if leaks are detected.
Grundsätzlich genügt eine einzige O - Ring - Dichtung, um die Aufgabe der Erfindung zu lösen.Basically, a single O-ring seal is sufficient to achieve the object of the invention.
Nach einer vorteilhaften Ausgestaltung ist es „vorgesehen, dass der Metalizylinder zumindest zwei in Richtung des Innenraums des Druckbehälters aufeinanderfolgende Nuten aufweist, in die jeweils O-Ringe dichtend einsetzbar und mit dem Kragen in Eingriff bringbar sind. Durch mehrere aufeinander folgende Dichtzonen ergibt sich eine Art Labyrintheffekt mit abgestuft verminderter Druckbeanspruchung der einzelnen O-Ring - Dichtungen. Falls eine der O-Ring - Dichtungen unzureichend wirksam ist, beispielsweise durch eine Beschädigung oder Verschleiß, kann die andere O-Ring - Dichtung die Dichtwirkung insgesamt noch erfüllen. Für die Dauerhaftigkeit der Dichtheit ist das von großem Vorteil. Vor allem das natürliche Setzverhalten des gewöhnlich aus einem thermoplastischen Werkstoff bestehenden Kunststoffkernbehälters, im Fachgebiet auch als Liner bezeichnet, mit dem der Druckbehälter ganz ausgekleidet ist, wird hierdurch besser kompensiert. Natürlich kann der Liner auch aus abweichenden Werkstoffen wie z.B. aus Metall bestehen. Der mindestens eine O-Ring besteht vorteilhaft aus elastomerem Werkstoff, um Setzerscheinungen eines aus polymerem und insbesondere aus thermoplastischem Werkstoff bestehenden Liners besser kompensieren zu können. O-Ring - Dichtungen aus abweichenden Werkstoffen können gleichwohl ebenfalls verwendet werden, beispielsweise solche aus PTFE. Neben einer guten Chemikalienbeständigkeit zeichnen sich solche O - Ring - Dichtungen auf Grund des dem PTFE eigenen Memory - Effektes durch eine gute Dauerelastizität aus.According to an advantageous embodiment, it is provided "that the metal cylinder has at least two in the direction of the interior of the pressure vessel consecutive grooves in the respective O-rings are sealingly insertable and engageable with the collar. By several successive sealing zones results in a kind of labyrinth effect with graduated reduced compressive stress of the individual O-ring - seals. If one of the O-ring seals is insufficiently effective, for example as a result of damage or wear, the other O-ring seal can still fulfill the overall sealing effect. For the durability of the tightness that is of great advantage. Above all, the natural setting behavior of the usually made of a thermoplastic material plastic core container, also referred to in the art as a liner with which the pressure vessel is completely lined, is thereby better compensated. Of course, the liner can also consist of dissimilar materials such as metal. The at least one O-ring is advantageously made of elastomeric material in order to be able to better compensate for settling phenomena of a liner consisting of polymeric and in particular of thermoplastic material. O-ring seals made of dissimilar materials can nevertheless also be used, for example those made of PTFE. In addition to a good chemical resistance, such O - ring seals are characterized by a good permanent elasticity due to the memory effect of the PTFE itself.
Als vorteilhaft hat es sich bewährt, wenn zumindest eine O-Ring - Dichtung einen zylindrischen Teilbereich des Kragens mit einem zylindrischen Innenabschnitt des Metallkörpers verpresst. Der Kragen kann bei einer solchen Bauform den von der O-Ring - Dichtung ausgeübten Kräften nicht in unkontrollierbarer Weise ausweichen. Für ein dauerhaft gutes Abdichtergebnis ist das von großem Vorteil.It has proven to be advantageous if at least one O-ring seal presses a cylindrical portion of the collar with a cylindrical inner portion of the metal body. The collar can not evade the forces exerted by the O-ring - seal in an uncontrollable manner in such a design. This is a great advantage for a permanently good sealing result.
Nach einer anderen Ausgestaltung ist es vorgesehen, dass zumindest eine O- Ring - Dichtung einen mit einem Außengewinde versehenen und in den Metallkörper eingeschraubten Teilbereich des Kragens des Liners zwischen dem Metallkörper und dem Metalizylinder verpresst. Hierdurch wird sichergestellt, dass eine besonders präzise und statisch stabile Festlegung des Kragens in axialer Richtung erreicht wird, was ebenfalls ein gutes Abdichtungsergebnis begünstigt. Die im Bereich von Gewindeverbindungen zunächst immer vorhandenen Freiräume ermöglichen dem thermoplastischen Linerwerkstoff des Kragens die Freiräume durch Fließprozesse auszufüllen unter der Wirkung der adialen Verpressung durch die dauerelastische O-Ring Dichtung aus einem Elastomerwerkstof oder aus PTFE. Dies trägt dazu bei, Überlastungen zu verhindern und die Dauerhaftigkeit der Abdichtung zu verbessern. Der Metalizylinder ist zweckmäßig an dem dem Innenraum zugewandten Ende kegelig verjüngt auf einen Innendurchmesser, der höchsten so groß und zweckmäßig kleiner ist als der Innendurchmesser des Kragens. Er kann daher problemlos nachträglich eingefügt werden, ohne dass eine Beschädigung des Kragens befürchtet werden müsste.According to another embodiment, it is provided that at least one O-ring seal presses a provided with an external thread and screwed into the metal body portion of the collar of the liner between the metal body and the metal cylinder. This ensures that a particularly precise and static stable determination of the collar is achieved in the axial direction, which also favors a good sealing result. The free spaces that always exist in the area of threaded connections enable the thermoplastic liner material of the collar to fill in the free spaces through flow processes under the effect of adial compression by the permanently elastic O-ring seal made of an elastomer material or PTFE. This helps to prevent overloads and improve the durability of the seal. The metal cylinder is suitably tapered conically at the end facing the interior to an inner diameter which is as large and expediently smaller than the inner diameter of the collar. It can therefore easily be added later without fear of damaging the collar.
Das Außengewinde kann an dem der Zylinderfläche zugewandten Ende in einer durch den Metalizylinder begrenzten Kegelfläche enden. Bei einer Anlageberührung an dem Kragen wird dieser durch die Kegelfläche zusätzlich mit der Innenwandung des Metallkörpers verpresst und insbesondere vermieden, dass sich eine für eine gute Abdichtung nachteilige, unkontrollierte Deformation des Kragens ergibt.The external thread can end at the end facing the cylindrical surface in a conical surface delimited by the metal cylinder. In an investment contact with the collar of this is additionally pressed by the conical surface with the inner wall of the metal body and in particular avoided that results in a good for a good seal, uncontrolled deformation of the collar.
Der Kragen kann zur weiteren Verbesserung des diesbezüglichen Effektes an dem vom Innenraum abgewandten Ende in einer hohlkegeligen Fläche enden.The collar can end in a hollow conical surface to further improve the effect on the effect at the end facing away from the interior.
Der Metallkörper kann einen Flansch aufweisen, der den Metalizylinder zumindest an dem dem Innenraum zugewandten Ende und zweckmäßig auf seiner ganzen axialen Länge übergreift. Dadurch wird im Bereich der für das gute Abdichtungsergebnis maßgeblichen O-Ring-Dichtungen eine besonders gute Unnachgiebigkeit des Metallkörpers erhalten.The metal body may have a flange which engages over the metal cylinder at least at the end facing the interior and expediently over its entire axial length. As a result, a particularly good intrinsic resistance of the metal body is obtained in the region of the O-ring seals which are decisive for the good sealing result.
Um eine besonders gute Deformationsbeständigkeit des Druckbehälters zu erhalten, kann der Flansch ein dreieckig nach außen verjüngtes Profil haben. Die Einbettung in die aus faserverstärktem Kunststoff bestehende Armierung des Druckbehälters gelingt hierdurch besonders gut. Dafür ist es vor allem wichtig, dass die Außen- und Innenseiten der einander gegenüberliegenden Flächen unter Vermeidung von Abstufungen gleichmäßig ineinander übergehen. Der Metallkörper kann an dem vom Innenraum des Druckbehälters abgewandten Ende mit einem Ringbund versehen sein, der die Stützhülle unmittelbar anliegend übergreift. Relativverschiebungen, die eine Zerstörung einleiten können, werden dadurch zusätzlich verhindert. Außerdem kann der Stützbund mit einem Sechskant versehen sein, um das Ansetzen eines Schraubenschlüssels zu ermöglichen und die Metallarmatur bei Bedarf vor Ort problemlos herausschrauben und ersetzen zu können.In order to obtain a particularly good deformation resistance of the pressure vessel, the flange may have a triangular outwardly tapered profile. The embedding in the reinforcement made of fiber reinforced plastic of the pressure vessel succeeds thereby particularly well. For this it is especially important that the outer and inner sides of the opposing surfaces smoothly merge into each other while avoiding gradations. The metal body may be provided at the end facing away from the interior of the pressure vessel end with a collar, which engages over the support shell directly adjacent. Relative displacements, which can initiate destruction, are thereby additionally prevented. In addition, the support collar can be provided with a hexagon to allow the attachment of a wrench and unscrew and replace the metal fitting on site if necessary without problems.
Kurzbeschreibung der ZeichnungBrief description of the drawing
In der in der Anlage beigefügten Zeichnung ist eine beispielhafte Ausführung des erfindungsgemäßen Druckbehälters in längsgeschnittener Darstellung wieder gegeben. Es zeigen:In the attached in the annex drawing an exemplary embodiment of the pressure vessel according to the invention is given in longitudinal section again. Show it:
Fig.1 einen längsgeschnittenen Ausschnitt aus einem Druckbehälter im Bereich der Metallarmatur.1 shows a longitudinal section of a pressure vessel in the region of the metal fitting.
Ausführung der Erfindung:Embodiment of the invention:
Der gezeigte Druckbehälter dient zur Speicherung von flüssigen oder gasförmigen Medien. Er umfasst einen Kunststoffkernbehälter 1 mit einem zylindrischen Kragen 1.1 , der in dem radialen Zwischenraum zwischen einem darin eingesetzten Metalizylinder 2 und einem den Kragen 1.1 außenseitig umschließenden Metallkörper 3 mit einem radial nach außen vorstehenden Flansch 3.1 angeordnet ist, wobei der Metalizylinder zumindest eine radial nach außen offene Nut 4 aufweist, in die eine dichtend an den Kragen 1.1 angepresste O-Ring - Dichtung 5 eingesetzt ist, wobei eine Metallarmatur 2.1 mit einem Außengewinde 2.2 in das von dem Metalizylinder abgewandte Ende des Metallkörpers 3 eingeschraubt ist und wobei der Kunststoffkernbehälter 1 und der Flansch 3.1 von einer Stützhülle 7 aus einem Faserverbundstoff ganz umschlossen sind.The pressure vessel shown serves for the storage of liquid or gaseous media. It comprises a plastic core container 1 with a cylindrical collar 1.1, which is arranged in the radial gap between a metal cylinder 2 inserted therein and a metal body 3 surrounding the collar 1.1 on the outside with a radially outwardly projecting flange 3.1, wherein the metal cylinder at least one radially outward has an open groove 4, in which a sealing pressed against the collar 1.1 O-ring - seal 5 is inserted, wherein a metal fitting 2.1 is screwed with an external thread 2.2 in the remote from the metal cylinder end of the metal body 3 and wherein the plastic core container. 1 and the flange 3.1 are completely enclosed by a supporting sheath 7 made of a fiber composite material.
Der Metalizylinder 2 bildet einen einstückigen Bestandteil der Armatur 2.1 , schließt sich unmittelbar an das Außengewinde 2.2 an und der Metalizylinder 2 hat einen abgestuft kleineren Außendurchmesser als das Außengewinde 2.2.The metal cylinder 2 forms an integral part of the valve 2.1, immediately adjoins the external thread 2.2 and the metal cylinder 2 has a stepped smaller outer diameter than the external thread 2.2.
Zwischen dem Außengewinde 2.2 und dem Metalizylinder 2 ist insbesondere kein radial nach außen vorstehender Bund o.a. vorhanden. Der Metalizylinder 2 ist von einer nicht gezeigten Bohrung in Längsrichtung durchdrungen, durch die in den Innenraum 6 des Druckbehälters ein druckbeaufschlagtes Medium eingespeist und daraus entnommen werden kann. Der Druckbehälter besteht im einfachsten Fall nur aus fünf Teilen.Between the external thread 2.2 and the metal cylinder 2 is in particular no radially outwardly projecting collar o.a. available. The metal cylinder 2 is penetrated by a bore, not shown, in the longitudinal direction through which a pressurized medium is fed into the interior 6 of the pressure vessel and can be removed therefrom. The pressure vessel consists in the simplest case of only five parts.
Der Metalizylinder 2 weist in Richtung des Innenraums 6 des Druckbehälters aufeinanderfolgende Nuten 4 auf, in die jeweils O-Ring - Dichtungen 5 in radial nach außen offene Nuten dichtend eingesetzt sind. Sie bewirken in dieser Tandemanordnung auf Grund von Labyrintheffekten eine besonders effektive Abdichtwirkung.The metal cylinder 2 has in the direction of the interior 6 of the pressure vessel successive grooves 4, in which each O-ring - seals 5 are inserted sealingly in radially outwardly open grooves. They cause in this tandem arrangement due to labyrinth effects a particularly effective sealing effect.
Die dem abzudichtenden Raum 6 zugewandte zumindest eine, dauerelastische O-Ring Dichtung 5 verpresst einen zylindrischen Teilbereich des thermoplastischen Kragens 1.1 mit einem zylindrischen Innenabschnitt des Metallkörpers 3. Da der Kragen durch die der O-Ring - Dichtung radial gegenüberliegende Abstützung auf einer Zylinderfläche nicht ausweichen kann, resultiert langfristig eine besonders gut kontrollierbare Abdichtwirkung.The space 6 to be sealed facing at least one, permanently elastic O-ring seal 5 presses a cylindrical portion of the thermoplastic collar 1.1 with a cylindrical inner portion of the metal body 3. Since the collar by the O-ring seal radially opposing support on a cylindrical surface do not dodge can result in the long term, a particularly good controllable sealing effect.
Der vom Innenraum 6 abgewandte, dauerelastische O-Ring 5 verpresst einen mit einem Außengewinde versehenen und in den Metallkörper 3 eingeschraubten Teilbereich des thermoplastischen Kragens zwischen dem Metallkörper 3 und dem Metalizylinder 2. Dies begünstigt die axiale Fixierung des Kragens in Längsrichtung auf dem Metalizylinder, was die Abdichtwirkung erheblich verbessert, so dass auch Belastungen durch Temperaturwechsel und Schwingungen gut aufgefangen werden können.The remote from the interior 6, permanently elastic O-ring 5 presses a provided with an external thread and screwed into the metal body 3 portion of the thermoplastic collar between the metal body 3 and the metal cylinder 2. This favors the axial fixation the collar in the longitudinal direction on the metal cylinder, which significantly improves the sealing effect, so that also loads due to temperature changes and vibrations can be well absorbed.
Der Metalizylinder 2 ist an dem dem Innenraum 6 zugewandten Ende kegelig verjüngt auf einen Innendruchmesser, der kleiner ist als der Innendruchmesser des Kragens 1.1 , um das Einfügen des Metalizylinders 2 in den Kragen 1.1 zu erleichtern.The metal cylinder 2 is conically tapered at the end facing the inner space 6 to an inner diameter which is smaller than the inner diameter of the collar 1.1 in order to facilitate the insertion of the metal cylinder 2 into the collar 1.1.
Das Außengewinde 2.2 endet an dem der Zylinderfläche 2 zugewandten Ende in einer durch den Metalizylinder 2 begrenzten Kegelfläche 2.4, was ebenfalls das Einfügen des Metalizylinders 2 in den Kragen erleichtert und bei einer gegenseitigen Berührung unerwünschte Deformationen vermeidet.The external thread 2.2 ends at the cylinder surface 2 facing the end in a limited by the metal cylinder 2 conical surface 2.4, which also facilitates the insertion of the metal cylinder 2 in the collar and avoids undesirable deformations in a mutual contact.
Dies gelingt vor allem in Verbindung mit dem Merkmal, dass der Kragen 1.1 an dem vom Innenraum abgewandten Ende in einer hohlkegeligen Fläche endet.This succeeds especially in conjunction with the feature that the collar 1.1 ends at the end facing away from the interior in a hollow-conical surface.
Der Metallkörper 3 weist einen Flansch 3.1 auf, der den Metalizylinder 2 an dem dem Innenraum 6 zugewandten Ende etwa zu 50% der axialen Länge übergreift. Der Flansch 3.1 bewirkt eine zusätzliche radiale Aussteifung des Metallkörpers 3 im Bereich der für die Abdichtung wichtigen O-Ring - Dichtungen.The metal body 3 has a flange 3.1, which engages over the metal cylinder 2 at the end facing the interior 6 about 50% of the axial length. The flange 3.1 causes an additional radial stiffening of the metal body 3 in the area of important for the sealing O-ring - seals.
Der Flansch 3.1 hat ein dreieckig nach außen verjüngtes Profil, um seine nahtlose Einbindung in die aus einem Faserverbundwerkstoff bestehende Stützhülle 7 zu ermöglichen.The flange 3.1 has a triangular outwardly tapered profile to allow its seamless integration into the existing of a fiber composite support sheath 7.
Der Metallkörper 3 ist an dem vom Innenraum .6 des Druckbehälters abgewandten Ende mit einem Ringbund 3.3 versehen, der die Stützhülle 7 unmittelbar anliegend übergreift. Die Stützhülle 7 wird dadurch zusätzlich relativ zu dem Metallkörper 3 fixiert.The metal body 3 is provided at the end facing away from the interior .6 of the pressure vessel with an annular collar 3.3, the support shell. 7 immediately overlaps. The support shell 7 is thereby additionally fixed relative to the metal body 3.
Die mit der Erfindung erzielten Vorteile bestehen vor allem in einer wesentlich vereinfachten Konstruktion: Es sind weniger Metallbauteile als bisher erforderlich, was neben einem reduzierten Fertigungsaufwand zu einem verminderten Montageaufwand führt. Außerdem besteht die Möglichkeit, dieThe advantages achieved by the invention are mainly in a much simplified design: There are fewer metal components than previously required, resulting in addition to a reduced manufacturing cost to a reduced assembly cost. There is also the possibility of the
Dichtwirkung des bereits mit einer Stützhülle aus einem Faserverbundstoff umkleideten Druckbehälters nachträglich an besondere Erfordernisse des speziellen Anwendungsfalls anpassen zu können und die Dichtwirkung durch einen nachträglichen Austausch von O-Ring - Dichtungen zu verbessern oder wiederherstellen zu können. To be able to subsequently adapt the sealing effect of the pressure vessel, which has already been clad with a support shell made from a fiber composite, to special requirements of the specific application and to be able to improve or restore the sealing effect by subsequent replacement of O-ring seals.

Claims

Patentansprüche claims
1. Druckbehälter zur Speicherung von flüssigen oder gasförmigen Medien, umfassend einen Kunststoffkernbehälter (1) mit zumindest einem zylindrischen Kragen (1.1 ), der in dem radialen Zwischenraum zwischen einem darin eingesetzten Metalizylinder (2) und einem den Kragen (1a) außenseitig umschließenden Metallkörper (3) mit einem radial nach außen vorstehenden Flansch (3.1) angeordnet ist, wobei der Metalizylinder zumindest eine radial nach außen offene Nut (4) aufweist, in die eine dichtend an den Kragen (1.1) angepresste O-Ring - Dichtung (5) eingesetzt ist, wobei eine Metallarmatur (2.1) mit einem Außengewinde (2.2) in das von dem Metalizylinder abgewandte Ende des Metallkörpers (3) eingeschraubt ist und wobei der Ku nststoffkernbe hälter (1) und der Flansch (3.1) von einer Stützhülle (7) aus einem Faserverbundstoff zumindest anteilig umschlossen sind, dadurch gekennzeichnet, dass der Metalizylinder (2) einen einstückigen Bestandteil der Armatur (2.1) bildet, sich unmittelbar an das Außengewinde anschließt und dass der Metalizylinder (2) einen abgestuft kleineren Außendurchmesser als das Außengewinde (2.2) hat.1. Pressure vessel for storing liquid or gaseous media, comprising a plastic core container (1) with at least one cylindrical collar (1.1), in the radial gap between a metal cylinder inserted therein (2) and the collar (1 a) enclosing the outside metal body ( 3) is arranged with a radially outwardly projecting flange (3.1), wherein the metal cylinder has at least one radially outwardly open groove (4) into which a sealingly against the collar (1.1) pressed O-ring seal (5) is, wherein a metal fitting (2.1) with an external thread (2.2) is screwed into the metal cylinder facing away from the end of the metal body (3) and wherein the Ku nststoffkernbe container (1) and the flange (3.1) of a support shell (7) a fiber composite material are at least partially enclosed, characterized in that the metal cylinder (2) forms an integral part of the valve (2.1), unmit connects directly to the external thread and that the metal cylinder (2) has a stepped smaller outer diameter than the external thread (2.2).
2. Druckbehälter nach Anspruch 1 , dadurch gekennzeichnet, dass der Metalizylinder zumindest zwei in Richtung des Innenraums (6) des Druckbehälters aufeinanderfolgende Nuten (4) aufweist, in die jeweils O- Ring - Dichtungen (5) dichtend einsetzbar sind.2. Pressure vessel according to claim 1, characterized in that the metal cylinder has at least two in the direction of the interior (6) of the pressure vessel successive grooves (4) in the respective O-ring - seals (5) are sealingly insertable.
3. Druckbehälter nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass zumindest eine O-Ring - Dichtung (5) einen zylindrischen Teilbereich des Kragens (1.1) mit einem zylindrischen Innenabschnitt des Metallkörpers (3) verpresst. 3. Pressure vessel according to claim 1 or 2, characterized in that at least one O-ring - seal (5) a cylindrical portion of the collar (1.1) is pressed with a cylindrical inner portion of the metal body (3).
4. Druckbehälter nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass zumindest eine O-Ring - Dichtung (5) einen mit einem Außengewinde versehenen und in den Metallkörper (3) eingeschraubten Teilbereich zwischen dem Metallkörper (3) und dem Metalizylinder (2) verpresst.4. Pressure vessel according to one of claims 1 to 3, characterized in that at least one O-ring - seal (5) provided with an external thread and in the metal body (3) screwed portion between the metal body (3) and the metal cylinder (2 ) pressed.
5. Druckbehälter nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der Metalizylinder (2) an dem dem Innenraum (6) zugewandten Ende kegelig verjüngt ist auf einen Innendurchmesser, der kleiner ist als der Innendurchmesser des Kragens (1.1).5. Pressure vessel according to one of claims 1 to 4, characterized in that the metal cylinder (2) at the interior (6) facing the end tapered conically to an inner diameter which is smaller than the inner diameter of the collar (1.1).
6. Druckbehälter nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass das Außengewinde (2.2) an dem der Zylinderfläche (2) zugewandten6. Pressure vessel according to one of claims 1 to 5, characterized in that the external thread (2.2) on which the cylindrical surface (2) facing
Ende in einer durch den Metalizylinder (2) begrenzten Kegelfläche (2.4) endet.Ends in a limited by the metal cylinder (2) conical surface (2.4) ends.
7. Druckbehälter nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass der Kragen (1.1) an dem vom Innenraum abgewandten Ende in einer hohlkegeligen Fläche endet.7. Pressure vessel according to one of claims 1 to 6, characterized in that the collar (1.1) ends at the end remote from the interior in a hollow-conical surface.
8. Duckbehälter nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, der Metallkörper (3) einen Flansch (3.1) aufweist, der den Metalizylinder (2) zumindest an dem dem Innenraum (6) zugewandten Ende übergreift.8. Duck container according to one of claims 1 to 7, characterized in that the metal body (3) has a flange (3.1) which engages over the metal cylinder (2) at least at the interior (6) facing the end.
9. Druckbehälter nach Anspruch 1 bis 8, dadurch gekennzeichnet, dass der Flansch (3.1) ein dreieckig nach außen verjüngtes Profil hat. 9. Pressure vessel according to claim 1 to 8, characterized in that the flange (3.1) has a triangular outwardly tapered profile.
10. Druckbehälter nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass der Metallkörper (3) an dem vom Innenraum (6) des Druckbehälters abgewandten Ende mit einem Ringbund (3.3) versehen ist, der die Stützhülle (7) unmittelbar anliegend übergreift. 10. Pressure vessel according to one of claims 1 to 9, characterized in that the metal body (3) facing away from the interior (6) of the pressure vessel end with a collar (3.3) is provided, which engages over the supporting shell (7) directly adjacent.
EP08707396A 2007-03-08 2008-01-30 Pressure container for storing liquid or gaseous media Active EP2115343B1 (en)

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DE102007011211A DE102007011211B3 (en) 2007-03-08 2007-03-08 Pressurized container for liquid or gas has a two part metal connection secured via a screw fit
PCT/EP2008/000696 WO2008107049A1 (en) 2007-03-08 2008-01-30 Pressure container for storing liquid or gaseous media

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Also Published As

Publication number Publication date
DE102007011211B3 (en) 2008-08-14
EP2115343B1 (en) 2010-11-03
ATE487087T1 (en) 2010-11-15
DE502008001708D1 (en) 2010-12-16
WO2008107049A1 (en) 2008-09-12

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