EP1977153B1 - Pressurised container - Google Patents

Pressurised container Download PDF

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Publication number
EP1977153B1
EP1977153B1 EP06792275.7A EP06792275A EP1977153B1 EP 1977153 B1 EP1977153 B1 EP 1977153B1 EP 06792275 A EP06792275 A EP 06792275A EP 1977153 B1 EP1977153 B1 EP 1977153B1
Authority
EP
European Patent Office
Prior art keywords
support ring
plastic casing
pressurised container
symmetrically formed
plastic
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
EP06792275.7A
Other languages
German (de)
French (fr)
Other versions
EP1977153A1 (en
Inventor
Norbert 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.)
Hydac Technology GmbH
Original Assignee
Hydac Technology 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
Application filed by Hydac Technology GmbH filed Critical Hydac Technology GmbH
Publication of EP1977153A1 publication Critical patent/EP1977153A1/en
Application granted granted Critical
Publication of EP1977153B1 publication Critical patent/EP1977153B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C1/00Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
    • F17C1/02Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge involving reinforcing arrangements
    • F17C1/04Protecting sheathings
    • F17C1/06Protecting sheathings built-up from wound-on bands or filamentary material, e.g. wires
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C1/00Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
    • F17C1/16Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge constructed of plastics materials
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2201/00Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01Shape
    • F17C2201/0104Shape cylindrical
    • F17C2201/0109Shape cylindrical with exteriorly curved end-piece
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2201/00Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01Shape
    • F17C2201/0104Shape cylindrical
    • F17C2201/0119Shape cylindrical with flat end-piece
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2201/00Vessel construction, in particular geometry, arrangement or size
    • F17C2201/05Size
    • F17C2201/056Small (<1 m3)
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2203/00Vessel construction, in particular walls or details thereof
    • F17C2203/06Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0602Wall structures; Special features thereof
    • F17C2203/0604Liners
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2203/00Vessel construction, in particular walls or details thereof
    • F17C2203/06Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0602Wall structures; Special features thereof
    • F17C2203/0612Wall structures
    • F17C2203/0614Single wall
    • F17C2203/0619Single wall with two layers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2203/00Vessel construction, in particular walls or details thereof
    • F17C2203/06Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0634Materials for walls or layers thereof
    • F17C2203/0658Synthetics
    • F17C2203/066Plastics
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2203/00Vessel construction, in particular walls or details thereof
    • F17C2203/06Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0634Materials for walls or layers thereof
    • F17C2203/0658Synthetics
    • F17C2203/0663Synthetics in form of fibers or filaments
    • F17C2203/0665Synthetics in form of fibers or filaments radially wound
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2203/00Vessel construction, in particular walls or details thereof
    • F17C2203/06Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0634Materials for walls or layers thereof
    • F17C2203/0658Synthetics
    • F17C2203/0663Synthetics in form of fibers or filaments
    • F17C2203/0668Synthetics in form of fibers or filaments axially wound
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2203/00Vessel construction, in particular walls or details thereof
    • F17C2203/06Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0634Materials for walls or layers thereof
    • F17C2203/0658Synthetics
    • F17C2203/0663Synthetics in form of fibers or filaments
    • F17C2203/0673Polymers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2205/00Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0305Bosses, e.g. boss collars
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2205/00Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323Valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2205/00Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0388Arrangement of valves, regulators, filters
    • F17C2205/0394Arrangement of valves, regulators, filters in direct contact with the pressure vessel
    • F17C2205/0397Arrangement of valves, regulators, filters in direct contact with the pressure vessel on both sides of the pressure vessel
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2209/00Vessel construction, in particular methods of manufacturing
    • F17C2209/21Shaping processes
    • F17C2209/2109Moulding
    • F17C2209/2127Moulding by blowing
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2209/00Vessel construction, in particular methods of manufacturing
    • F17C2209/21Shaping processes
    • F17C2209/2109Moulding
    • F17C2209/2145Moulding by rotation
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2223/00Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0107Single phase
    • F17C2223/0123Single phase gaseous, e.g. CNG, GNC
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2223/00Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/03Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the pressure level
    • F17C2223/036Very high pressure (>80 bar)
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2260/00Purposes of gas storage and gas handling
    • F17C2260/01Improving mechanical properties or manufacturing
    • F17C2260/011Improving strength
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2260/00Purposes of gas storage and gas handling
    • F17C2260/01Improving mechanical properties or manufacturing
    • F17C2260/013Reducing manufacturing time or effort
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2260/00Purposes of gas storage and gas handling
    • F17C2260/04Reducing risks and environmental impact
    • F17C2260/042Reducing risk of explosion

Definitions

  • the invention relates to a pressure vessel for receiving at least one fluid medium according to claim 1.
  • EP 1 248 929 B1 is reinforced with a fiber plastic composite plastic core container known as an inner plastic jacket for storing liquid and / or gaseous media under pressure, wherein the core container has one or more fittings in the neck and / or bottom and / or cylindrical container part, of which at least one connecting piece for receiving a screw-in cylindrical or conical thread having pressure line feed, such as a valve or a pipe connection is formed.
  • a fiber plastic composite plastic core container known as an inner plastic jacket for storing liquid and / or gaseous media under pressure
  • the core container has one or more fittings in the neck and / or bottom and / or cylindrical container part, of which at least one connecting piece for receiving a screw-in cylindrical or conical thread having pressure line feed, such as a valve or a pipe connection is formed.
  • connection pin of the plastic core container as a collar part, a cylindrical insert is mounted with a collar end enveloping or circumferential collar end, wherein at least two seals are arranged in such a way that at least one seal between the insert and the inner surface of the plastic connection pin of the plastic core container and at least one further seal is arranged between the insert and the pressure line feed.
  • DE 197 51 411 C1 is a generic composite pressure vessel for storing gaseous media under pressure, known with a plastic liner as the inner or first plastic shell, with two arranged in the neck throat sections, and with a liner reinforcing winding of a fiber composite material as the second Plastic sheath.
  • a screwed into this neckpiece clamping ring is provided, which has a threaded portion on the outer shell, followed by a thread-free truncated cone-like portion and arranged between the female threaded portions of the neck piece annular groove for receiving a sealing ring extends radially into the neck piece and on the outside of the respective neck piece.
  • the arrangement is provided with at least one bead extending radially outwards over the entire circumference.
  • the wedge-like taper of the outer support ring extends only along the inner peripheral portion of the neck piece along a horizontal plane formed by the liner, which in turn opens at a sharp right angle deflected into the collar part, which the media supply and discharge includes.
  • WO 03/069217 A2 is a generic pressure vessel for receiving at least one fluid medium having a first plastic shell and a first plastic shell at least partially comprising the second plastic shell known
  • the first plastic shell has at least at one end a collar portion which includes an opening for the media supply and removal, wherein the collar portion and the second plastic shell are supported on an intermediate outer support ring which tapers in the direction of a gap opening between said shells, the gap opening between the sheaths being brought to a location where the shells co-abut each other are, and where up to this point the wedge-like Rejuvenation of the outer support ring leads, which is formed at least in one piece.
  • the present invention seeks to further improve the known solutions to the effect that a highly reliable pressure vessel is created in a cost effective manner with a reduced manufacturing effort.
  • This object is achieved by a pressure vessel with the features of claim 1 in its entirety.
  • the inner support ring is guided in such a way in the outer support ring, that a common boundary wall for the media supply and removal is created.
  • the gap opening between the sheaths is brought to a point where the coats are in coaxial arrangement in abutment with each other and that leads to this point the wedge-like taper of the outer support ring, which is integrally formed or composed of at least two annular individual segments made of metal , a sealed container or storage arrangement is created, which is feasible with low production costs.
  • the pressure vessel according to the invention can be used for a variety of applications and in that up to the outer peripheral region of the two coats into the support via the wedge-like tapered outer support ring, any relative movements between the plastic shells on the outer support ring are intercepted and damaging Delaminierratae are such form directly between avoided the sensitive plastic materials.
  • the mutually facing contour surfaces of the first and second plastic jacket can be due to the wedge-like leadership of the outer support ring, which leads into the outer peripheral region of the arrangement without sharp deflections and without sudden changes in direction realize, which allows a particularly gentle introduction of force for said plastic shells.
  • a particularly favorable introduction of force results when the outer support ring is formed in one piece and then preferably consists of a plastically deformable plastic material, in particular of a polymer material.
  • good results can also be achieved if the outer support ring is composed as a rigid support member body of at least two individual segments, for example in the form of single rings, which in turn simplifies the production and thus helps reduce manufacturing costs.
  • the outer support ring completely and therefore consists of a single piece of plastic material, is also excluded that, where appropriate, at sharp-edged transition points, the plastic material of the coats can be damaged by the outer support ring.
  • a high rigidity for the container arrangement is achieved, in particular with respect to the collar part of the liner as the inner or first plastic material.
  • the pressure vessel is also provided to provide the outer contour of the outer support ring in the direction of the gap opening with a convex curvature and to let its opposite inner contour extending from the gap opening in a rectilinear slope, at the point of entry of the collar part in a parallel to the longitudinal axis of the container contact surface opens.
  • the pertinent embodiment of the outer support ring with convex curvature on the outer contour and plane-parallel configuration on the inner contour side leads to a particularly favorable introduction of force of the loads of the inner shell in the outer support ring, the extent of the outer plastic shell is further supported by wrapping.
  • the reproduced in the drawing pressure vessel serves to store liquid or gaseous fluid media, which can be under a pressure of up to several thousand bar. It is provided at both ends with connection openings 10 for the media supply and removal, can be connected to the pressure lines and / or valves not shown or used, which can be differently sized and configured depending on the application for the pressure vessel.
  • the pressure vessel has a first plastic shell 12 and a first plastic shell 12, at least partially comprising second plastic shell 14.
  • the pertinent first plastic shell 12 is also referred to technical language with plastic core container or liner. It preferably consists of polyamide and is obtained by means of a blow molding process or by rotational sintering. The pertinent production methods are customary, so that will not be discussed further here at this point.
  • the addressed liner 12 is reinforced on the outer circumference side by an externally wound fiber winding as a second plastic sheath 14.
  • the reinforcing wrap consists of a Fiber reinforcement, such as carbon, aramid, gas, boron, Al 2 O 3 fibers or mixtures thereof, which are also referred to as hybrid yarns, in a matrix of thermosets, such as epoxy or phenolic resins or in thermoplastics, for example in the form of PA12, PA6, PP etc. are embedded.
  • the fiber composite forming the support shell thus contains intersecting fiber strands embedded in synthetic resin which extend essentially in the longitudinal and circumferential directions.
  • the fiber composite forming the support shell may additionally or alternatively also comprise fiber strands crossing one another, which may be inclined in the longitudinal and circumferential direction and associated with each other in an expedient configuration of the longitudinal axis of the plastic core container.
  • the longitudinal and circumferential forces can thereby be absorbed in an optimal manner by the pressure vessel.
  • the possibilities are improved, the ratio of the opening cross-section of an end opening, with respect to the inner diameter of the plastic core container to large values of at least 30%, preferably set at least 50%, without resulting in functional impairments.
  • first plastic shell 12 opens into a cylindrical collar portion 16, wherein in an embodiment not shown, it would also be conceivable to close one end of the first plastic sheath 12 and provide only one collar member 16.
  • the pressure vessel is substantially rotationally symmetrical and extends along its central circumference 18, with coaxial arrangement of its two shells 12, 14 along its longitudinal axis 20. Seen in the direction of this longitudinal axis 20, the free end of the second plastic sheath 14, above the collar part 16 of the first plastic sheath 12 off, reflecting the forces to be introduced during operation the container has proved to be favorable.
  • the collar part 16 of the first plastic sheath 12 and the second plastic sheath 14 are otherwise supported on an outer support ring 22 located between them.
  • the outer support ring 22 tapers in the direction of a gap opening 24 between said sheaths 12, 14. According to the invention it is provided that said gap opening 24 between the sheaths 12, 14 is brought to a point at which the coats 12, 14 in coaxial arrangement with the longitudinal axis 20 of the memory in abutment with each other, up to this point the Wedge-like taper 26 of the outer support ring 22 leads, which is either, which is not shown in detail, integrally formed or as shown, at least two annular individual segments 28, 30 composed of metal.
  • the outer contour 32 of the outer support ring 22 is provided in the direction of the gap opening 24 with a convex curvature and its opposite inner contour 34 extends, starting from the gap opening 24 in a rectilinear slope, which at the location of entry of Collar portion 16 opens into a parallel to the longitudinal axis 20 of the container contact surface.
  • the curvature of the outer contour 32 increases in the direction of the free end of the second plastic sheath 14.
  • the outer support ring 22 consists of metallic individual segments
  • at least one of the two individual segments 28 or 30 in the peripheral region have a projection which opens in a kind of encroachment in an edge-side radial recess of the other single segment.
  • a particularly good adhesion of both individual segments to each other is possible.
  • in the Cross-section as seen in the figure therefore, is a single segment 30 in the manner of a Anlegekeiles and the other single segment 28 formed to the free end of the respective collar member 16 in the manner of a parallelogram.
  • the collar part 16 of the first shell 12 is supported on the inner circumference side on a further contact surface of an inner support ring 36, which is also formed as a rigid metal ring.
  • an inner support ring 36 need not be the same for the two ends of the pressure vessel; However, it is characteristic that the respective inner support ring 36 has an annular groove along an outer peripheral surface, for receiving an O-sealing ring 38, which serves to seal the respective media supply and removal. Further, it is characteristic that the inner support ring 36 is supported in the outer support ring 22 such that a common boundary wall for the media supply and removal is provided.
  • the indicated inner support ring 36 is provided in the direction of the interior of the pressure vessel with a contact slope, the inclination of the inclination of the slope of the inner contour 34 of the outer support ring 22 is adapted, in particular this corresponds. Further, the outer contour 32 of the outer support ring 22 is provided with an annular recess 40 into which the assignable end of the second plastic sheath 14 opens out under investment.
  • the second plastic sheath 14 has at least one additional winding layer 42 which on the one hand helps to increase the bursting pressure and on the other hand ensures that any massive internal parts of the pressure vessel or pressure accumulator can not escape outwards in the event of a burst, but rather on the outside Additional winding 42 are retained.
  • the pertinent additional winding 42 can only be present simply or multiple times at discrete intervals.
  • Said outer support ring 22 is capable of uniformly distributing stress peaks occurring in the manner of a pressure buffer and introducing them into the two plastic shells 12, 14. Such a bulging of the pressure vessel is effectively avoided.
  • the indicated cross-sectional wedge shape of the outer support ring 22 is favorable insofar as it effectively counteracts the said relative displacements, to which end the different configuration of the outer contour 32 to the inner contour 34 cooperates.

Landscapes

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

Description

Die Erfindung betrifft einen Druckbehälter zur Aufnahme mindestens eines Fluidmediums gemäß Anspruch 1.The invention relates to a pressure vessel for receiving at least one fluid medium according to claim 1.

Durch die EP 1 248 929 B1 ist ein mit einem Faserkunststoffverbund verstärkter Kunststoff-Kernbehälter als innerer Kunststoffmantel zur Speicherung von flüssigen und/oder gasförmigen Medien unter Druck bekannt, wobei der Kernbehälter einen oder mehrere Anschlussstücke im Hals- und/oder Boden und/oder zylindrischen Behälterteil aufweist, von denen mindestens ein Anschlussstück zur Aufnahme einer einschraubbaren zylindrischen oder konischen Gewinde aufweisenden Druckleitungszuführung, wie beispielsweise einem Ventil oder einem Rohrleitungsanschluss, ausgebildet ist. Im Anschlusszapfen des Kunststoff-Kernbehälters als Kragenteil ist ein zylindrischer Insert mit einem am Anschlusszapfenende einhüllenden bzw. umlaufenden Kragenende montiert, wobei mindestens zwei Dichtungen in der Weise angeordnet sind, dass mindestens eine Dichtung zwischen Insert und Innenoberfläche des Kunststoffanschlusszapfens des Kunststoffkernbehälters sowie mindestens eine weitere Dichtung zwischen Insert und Druckleitungszuführung angeordnet ist. Hierdurch soll eine hohe und langzeitig währende Dichtheit am Anschlussstück auch bei extremen wechselnden thermischen und mechanischen Betriebsbeanspruchungen sichergestellt werden. Aufgrund der scharfen Umlenkstelle des ersten inneren Kunststoffmantels in Richtung des Kragenteils um etwa 90° ist nicht auszuschließen, dass aufgrund der scharfen Umlenkstelle es zu schädlichen Beanspruchungsspitzen kommt und obwohl derAußenstützring zwischen äußerem und innerem Kunststoffmantel sich innerhalb der hierdurch gebildeten Spaltöffnung nach außen konisch oder keilartig verjüngt, findet die sich hieraus ergebende Abstützung nur im Inneren des im wesentlichen horizontal verlaufenden Anlagebereiches von den genannten beiden Kunststoffmänteln statt mit der Folge, dass es zu den Kunststoff schädigenden Relativbewegungen zwischen den Mänteln im genannten Bereich während des Betriebes der Vorrichtung kommen kann.By the EP 1 248 929 B1 is reinforced with a fiber plastic composite plastic core container known as an inner plastic jacket for storing liquid and / or gaseous media under pressure, wherein the core container has one or more fittings in the neck and / or bottom and / or cylindrical container part, of which at least one connecting piece for receiving a screw-in cylindrical or conical thread having pressure line feed, such as a valve or a pipe connection is formed. In the connection pin of the plastic core container as a collar part, a cylindrical insert is mounted with a collar end enveloping or circumferential collar end, wherein at least two seals are arranged in such a way that at least one seal between the insert and the inner surface of the plastic connection pin of the plastic core container and at least one further seal is arranged between the insert and the pressure line feed. This is to ensure a high and long-lasting tightness of the connector even with extreme changing thermal and mechanical operating stresses. Due to the sharp deflection point of the first inner plastic sheath in the direction of the collar part by about 90 ° can not be ruled out that due to the sharp deflection point comes to harmful stress peaks and although the outer support ring between the outer and inner plastic sheath tapers conically or wedge-like within the gap opening formed thereby , The resulting support takes place only in the interior of the substantially horizontally extending contact area of said two plastic shells with the result that it may cause the plastic damaging relative movements between the shells in said area during operation of the device.

Durch die DE 197 51 411 C1 ist ein gattungsgemäßer Composite-Druckbehälter zur Speicherung von gasförmigen Medien unter Druck, mit einem Liner aus Kunststoff als innerem bzw. ersten Kunststoffmantel bekannt, mit zwei im Halsbereich angeordneten Halsstücken, sowie mit einer den Liner verstärkenden Wicklung eines Faserverbundwerkstoffes als zweitem Kunststoffmantel. Im das Ventil aufnehmenden Halsstück ist ein in dieses Halsstück einschraubbarer Klemmring vorgesehen, der am Außenmantel einen Gewindeabschnitt aufweist, an den sich ein gewindefreier kegelstumpfartiger Abschnitt anschließt und die zwischen den Innengewindeabschnitten des Halsstückes angeordnete ringförmige Nut zur Aufnahme eines Dichtringes erstreckt sich radial in das Halsstück und auf der Außenseite des jeweiligen Halsstückes. Im an den Kragen anschließenden Bereich ist die Anordnung mit mindestens einer radial nach außen über den ganzen Umfang sich erstreckenden Sicke versehen. Ebenso wie bei der vorstehend bekannten Lösung erstreckt sich die keilartige Verjüngung des Außenstützringes nur entlang des inneren Umfangsbereiches am Halsstück entlang einer horizontalen durch den Liner gebildeten Ebene, der insoweit wiederum in scharfem rechten Winkel umgelenkt in das Kragenteil ausmündet, das die Medienzu- und -abfuhr umfasst. Die wiederum sehr gut abdichtende Lösung setzt zu Ihrer Realisierung einen entsprechenden großen konstruktiven Aufwand mit mehreren Bauteilen ein.By the DE 197 51 411 C1 is a generic composite pressure vessel for storing gaseous media under pressure, known with a plastic liner as the inner or first plastic shell, with two arranged in the neck throat sections, and with a liner reinforcing winding of a fiber composite material as the second Plastic sheath. In the valve receiving neckpiece a screwed into this neckpiece clamping ring is provided, which has a threaded portion on the outer shell, followed by a thread-free truncated cone-like portion and arranged between the female threaded portions of the neck piece annular groove for receiving a sealing ring extends radially into the neck piece and on the outside of the respective neck piece. In the region adjoining the collar, the arrangement is provided with at least one bead extending radially outwards over the entire circumference. As in the above-known solution, the wedge-like taper of the outer support ring extends only along the inner peripheral portion of the neck piece along a horizontal plane formed by the liner, which in turn opens at a sharp right angle deflected into the collar part, which the media supply and discharge includes. The again very good sealing solution uses a corresponding large design effort with several components for their realization.

Durch die WO 03/069217 A2 ist ein gattungsgemäßer Druckbehälter zur Aufnahme mindestens eines Fluidmediums mit einem ersten Kunststoffmantel und einen den ersten Kunststoffmantel zumindest teilweise umfassenden zweiten Kunststoffmantel bekannt, wobei der erste Kunststoffmantel zumindest an seinem einen Ende ein Kragenteil aufweist, das eine Öffnung für die Medienzu- und -abfuhr umfasst, wobei das Kragenteil und der zweite Kunststoffmantel sich an einem dazwischenliegenden Außenstützring abstützen, der sich in Richtung einer Spaltöffnung zwischen den genannten Mänteln keilartig verjüngt, wobei die Spaltöffnung zwischen den Mänteln bis an eine Stelle herangeführt ist, bei der die Mäntel in koaxialer Anordnung in Anlage miteinander sind, und wobei bis zu dieser Stelle die keilartige Verjüngung des Außenstützringes führt, der mindestens einstückig ausgebildet ist.By the WO 03/069217 A2 is a generic pressure vessel for receiving at least one fluid medium having a first plastic shell and a first plastic shell at least partially comprising the second plastic shell known, the first plastic shell has at least at one end a collar portion which includes an opening for the media supply and removal, wherein the collar portion and the second plastic shell are supported on an intermediate outer support ring which tapers in the direction of a gap opening between said shells, the gap opening between the sheaths being brought to a location where the shells co-abut each other are, and where up to this point the wedge-like Rejuvenation of the outer support ring leads, which is formed at least in one piece.

Ausgehend von diesem Stand der Technik liegt der Erfindung die Aufgabe zugrunde, die bekannten Lösungen dahingehend weiter zu verbessern, dass in kostengünstiger Weise bei einem verminderten Herstellaufwand ein hoch verläßlicher Druckbehälter geschaffen ist. Eine dahingehende Aufgabe löst ein Druckbehälter mit den Merkmalen des Patentanspruches 1 in seiner Gesamtheit.Based on this prior art, the present invention seeks to further improve the known solutions to the effect that a highly reliable pressure vessel is created in a cost effective manner with a reduced manufacturing effort. This object is achieved by a pressure vessel with the features of claim 1 in its entirety.

Der Innenstützring ist derart in dem Außenstützring geführt ist, dass eine gemeinsame Begrenzungswand für die Medienzu- und -abfuhr geschaffen ist.The inner support ring is guided in such a way in the outer support ring, that a common boundary wall for the media supply and removal is created.

Die Spaltöffnung zwischen den Mänteln ist bis an eine Stelle herangeführt, bei der die Mäntel in koaxialer Anordnung in Anlage miteinander sind und dass bis zu dieser Stelle die keilartige Verjüngung des Außenstützringes führt, der einstückig ausgebildet ist oder sich aus mindestens zwei ringförmigen Einzelsegmenten aus Metall zusammensetzt, ist eine dichte Behälter- oder Speicheranordnung geschaffen, die mit geringen Herstellkosten realisierbar ist. Der erfindungsgemäße Druckbehälter lässt sich für eine Vielzahl von Anwendungsfällen einsetzen und dadurch dass bis in den Außenumfangsbereich der beiden Mäntel hinein die Abstützung über den keilartig sich verjüngenden Außenstützring erfolgt, sind eventuell auftretende Relativbewegungen zwischen den Kunststoffmänteln über den Außenstützring abgefangen und schädigende Delaminierprozesse sind dergestalt unmittelbar zwischen den empfindlichen Kunststoffmaterialien vermieden. Die einander zugewandten Konturflächen von erstem und zweitem Kunststoffmantel lassen sich aufgrund der keilartigen Führung des Außenstützringes, der bis in den Außenumfangsbereich der Anordnung führt ohne scharfe Umlenkungen und ohne sprunghafte Richtungsänderungen realisieren, was eine besonders schonende Kräfteeinleitung für die genannten Kunststoffmäntel ermöglicht. Eine besonders günstige Krafteinleitung ergibt sich, wenn der Außenstützring einstückig ausgebildet ist und dann vorzugsweise aus einem plastisch verformbaren Kunststoffmaterial, insbesondere aus einem Polymermaterial besteht. Gute Ergebnisse lassen sich aber auch erreichen, wenn der Außenstützring als starrer Stützteilkörper aus mindestens zwei Einzelsegmenten beispielsweise in der Art von Einzelringen zusammengesetzt ist, was wiederum die Herstellung vereinfacht und mithin Herstellkosten senken hilft. Sofern der Außenstützring vollständig und mithin einstückig aus einem Kunststoffmaterial besteht, ist darüber hinaus ausgeschlossen, dass gegebenenfalls an scharfkantigen Übergangsstellen das Kunststoffmaterial der Mäntel durch den Außenstützring beschädigt werden kann. Bei einer metallischen Einzelringsegmentausbildung hingegen ist insbesondere bezogen auf das Kragenteil des Liners als innerem oder erstem Kunststoffmaterial eine hohe Steifigkeit für die Behälteranordnung erreicht.The gap opening between the sheaths is brought to a point where the coats are in coaxial arrangement in abutment with each other and that leads to this point the wedge-like taper of the outer support ring, which is integrally formed or composed of at least two annular individual segments made of metal , a sealed container or storage arrangement is created, which is feasible with low production costs. The pressure vessel according to the invention can be used for a variety of applications and in that up to the outer peripheral region of the two coats into the support via the wedge-like tapered outer support ring, any relative movements between the plastic shells on the outer support ring are intercepted and damaging Delaminierprozesse are such form directly between avoided the sensitive plastic materials. The mutually facing contour surfaces of the first and second plastic jacket can be due to the wedge-like leadership of the outer support ring, which leads into the outer peripheral region of the arrangement without sharp deflections and without sudden changes in direction realize, which allows a particularly gentle introduction of force for said plastic shells. A particularly favorable introduction of force results when the outer support ring is formed in one piece and then preferably consists of a plastically deformable plastic material, in particular of a polymer material. But good results can also be achieved if the outer support ring is composed as a rigid support member body of at least two individual segments, for example in the form of single rings, which in turn simplifies the production and thus helps reduce manufacturing costs. If the outer support ring completely and therefore consists of a single piece of plastic material, is also excluded that, where appropriate, at sharp-edged transition points, the plastic material of the coats can be damaged by the outer support ring. In contrast, in the case of a metallic single-ring segment formation, a high rigidity for the container arrangement is achieved, in particular with respect to the collar part of the liner as the inner or first plastic material.

Bei einer bevorzugten Ausführungsform des erfindungsgemäßen Druckbehälters ist darüber hinaus vorgesehen die Außenkontur des Außenstützringes in Richtung der Spaltöffnung mit einer konvexen Krümmung zu versehen und seine gegenüberliegende Innenkontur ausgehend von der Spaltöffnung in einer geradlinigen Schräge verlaufen zu lassen, die an der Stelle des Eintritts des Kragenteils in eine zur Längsachse des Behälters parallele Anlagefläche ausmündet. Die dahingehende Ausgestaltung des Außenstützringes mit konvexer Krümmung auf der Außenkontur und planparalleler Ausgestaltung auf der Innenkonturseite führt zu einer besonders günstigen Krafteinleitung der Belastungen des Innenmantels in den Außenstützring, der insoweit von dem äußeren Kunststoffmantel durch Umwicklung weiter abgestützt ist.In a preferred embodiment of the pressure vessel according to the invention is also provided to provide the outer contour of the outer support ring in the direction of the gap opening with a convex curvature and to let its opposite inner contour extending from the gap opening in a rectilinear slope, at the point of entry of the collar part in a parallel to the longitudinal axis of the container contact surface opens. The pertinent embodiment of the outer support ring with convex curvature on the outer contour and plane-parallel configuration on the inner contour side leads to a particularly favorable introduction of force of the loads of the inner shell in the outer support ring, the extent of the outer plastic shell is further supported by wrapping.

Weitere vorteilhafte Ausgestaltungen der erfindungsgemäßen Druckbehälterlösung sind Gegenstand der sonstigen Unteransprüche.Further advantageous embodiments of the pressure vessel solution according to the invention are the subject of the other dependent claims.

Im Folgenden wird der erfindungsgemäße Druckbehälter anhand eines Ausführungsbeispieles nach der Zeichnung näher erläutert. Dabei zeigt die einzige Figur in prinzipieller und nicht maßstäblicher Darstellung, die wesentlichen Teile des Druckbehälters in einem Längsschnitt.In the following, the pressure vessel according to the invention is explained in more detail using an exemplary embodiment according to the drawing. The sole figure in a schematic and not to scale representation, the essential parts of the pressure vessel in a longitudinal section.

Der in der Zeichnung wiedergegebene Druckbehälter dient der Speicherung von flüssigen oder gasförmigen Fluidmedien, die unter einem Druck von bis zu mehreren tausend bar stehen können. Er ist an beiden Enden mit Anschlußöffnungen 10 für die Medienzu- und -abfuhr versehen, an die nicht näher dargestellte Druckleitungen und/oder Ventile anschließbar bzw. einsetzbar sind, die je nach Anwendungszweck für den Druckbehälter unterschiedlich dimensioniert und ausgestaltet sein können.The reproduced in the drawing pressure vessel serves to store liquid or gaseous fluid media, which can be under a pressure of up to several thousand bar. It is provided at both ends with connection openings 10 for the media supply and removal, can be connected to the pressure lines and / or valves not shown or used, which can be differently sized and configured depending on the application for the pressure vessel.

Der Druckbehälter weist einen ersten Kunststoffmantel 12 auf und einen den ersten Kunststoffmantel 12, zumindest teilweise umfassenden zweiten Kunststoffmantel 14. Der dahingehende erste Kunststoffmantel 12 wird fachsprachlich auch mit Kunststoffkern-Behälter bezeichnet oder mit Liner. Er besteht bevorzugt aus Polyamid und wird mittels eines Blasformprozesses oder durch Rotationssintern erhalten. Die dahingehenden Herstellverfahren sind üblich, so dass an dieser Stelle hierauf nicht mehr näher eingegangen wird. Der angesprochene Liner 12 wird außenumfangseitig durch eine von außen aufgewickelte Faserwicklung als zweitem Kunststoffmantel 14 verstärkt. Beispielsweise besteht die verstärkende Umwicklung aus einer Faserverstärkung, wie Kohlenstoff-, Aramid-, Gas-, Bor-, Al2O3-Fasern oder aus Gemischen hieraus, die man auch als Hybridgarne bezeichnet, die in einer Grundmatrix aus Duromeren, beispielsweise Epoxid- oder Phenolharzen oder in Thermoplasten, beispielsweise in Form von PA12, PA6, PP etc. eingebettet sind. Der die Stützhülle bildende Faserverbundstoff enthält insoweit einander überkreuzende, in Kunstharz eingebettete Faserstränge, die sich im Wesentlichen in Längs- und Umfangsrichtung erstrecken. Der die Stützhülle bildende Faserverbundstoff kann ergänzend oder alternativ auch einander überkreuzende Faserstränge umfassen, die in der Längs- und Umfangsrichtung geneigt und in zweckmäßiger Weiterausgestaltung der Längsachse des Kunststoff-Kernbehälters spiegelbildlich geneigt einander zugeordnet sein können. Die längs- und umfangsgerichteten Kräfte lassen sich hierdurch in optimaler Weise durch den Druckbehälter auffangen. Außerdem werden die Möglichkeiten verbessert, das Verhältnis des Öffnungsquerschnittes einer stirnseitigen Öffnung, in Bezug zum Innendurchmesser des Kunststoff-Kernbehälters, auf große Werte von mindestens 30%, vorzugsweise von mindestens 50% einzustellen, ohne das sich Funktionsbeeinträchtigungen ergeben.The pressure vessel has a first plastic shell 12 and a first plastic shell 12, at least partially comprising second plastic shell 14. The pertinent first plastic shell 12 is also referred to technical language with plastic core container or liner. It preferably consists of polyamide and is obtained by means of a blow molding process or by rotational sintering. The pertinent production methods are customary, so that will not be discussed further here at this point. The addressed liner 12 is reinforced on the outer circumference side by an externally wound fiber winding as a second plastic sheath 14. For example, the reinforcing wrap consists of a Fiber reinforcement, such as carbon, aramid, gas, boron, Al 2 O 3 fibers or mixtures thereof, which are also referred to as hybrid yarns, in a matrix of thermosets, such as epoxy or phenolic resins or in thermoplastics, for example in the form of PA12, PA6, PP etc. are embedded. The fiber composite forming the support shell thus contains intersecting fiber strands embedded in synthetic resin which extend essentially in the longitudinal and circumferential directions. The fiber composite forming the support shell may additionally or alternatively also comprise fiber strands crossing one another, which may be inclined in the longitudinal and circumferential direction and associated with each other in an expedient configuration of the longitudinal axis of the plastic core container. The longitudinal and circumferential forces can thereby be absorbed in an optimal manner by the pressure vessel. In addition, the possibilities are improved, the ratio of the opening cross-section of an end opening, with respect to the inner diameter of the plastic core container to large values of at least 30%, preferably set at least 50%, without resulting in functional impairments.

An seinen gegenüberliegenden Enden mündet der erste Kunststoffmantel 12 in ein zylindrisches Kragenteil 16 aus, wobei bei einer nicht näher dargestellten Ausführungsform es auch denkbar wäre, das eine Ende des ersten Kunststoffmantels 12 zu schließen und nur ein Kragenteil 16 vorzusehen. Der Druckbehälter ist im wesentlichen rotationssymmetrisch ausgebildet und erstreckt sich entlang seines Mittenumfanges 18, mit koaxialer Anordnung seiner beiden Mäntel 12, 14 entlang seiner Längsachse 20. In Richtung dieser Längsachse 20 gesehen, mündet das freie Ende des zweiten Kunststoffmantels 14, oberhalb des Kragenteils 16 des ersten Kunststoffmantels 12 aus, was sich für die einzuleitenden Kräfte während des Betriebes des Behälters als günstig erwiesen hat. Das Kragenteil 16 des ersten Kunststoffmantels 12 und der zweite Kunststoffmantel 14 stützen sich im Übrigen an einem zwischen ihnen innenliegenden Außenstützring 22 ab. Der Außenstützring 22 verjüngt sich in Richtung einer Spaltöffnung 24 zwischen den genannten Mänteln 12, 14 keilartig. Erfindungsgemäß ist dabei vorgesehen, dass die genannte Spaltöffnung 24 zwischen den Mänteln 12, 14 bis an eine Stelle herangeführt ist, bei der die Mäntel 12, 14 in koaxialer Anordnung zu der Längsachse 20 des Speichers in Anlage miteinander sind, wobei bis zu dieser Stelle die keilartige Verjüngung 26 des Außenstützringes 22 führt, der entweder, was nicht näher dargestellt ist, einstückig ausgebildet ist oder gemäß der Darstellung sich aus mindestens zwei ringförmigen Einzelsegmenten 28, 30 aus Metall zusammensetzt.At its opposite ends of the first plastic shell 12 opens into a cylindrical collar portion 16, wherein in an embodiment not shown, it would also be conceivable to close one end of the first plastic sheath 12 and provide only one collar member 16. The pressure vessel is substantially rotationally symmetrical and extends along its central circumference 18, with coaxial arrangement of its two shells 12, 14 along its longitudinal axis 20. Seen in the direction of this longitudinal axis 20, the free end of the second plastic sheath 14, above the collar part 16 of the first plastic sheath 12 off, reflecting the forces to be introduced during operation the container has proved to be favorable. The collar part 16 of the first plastic sheath 12 and the second plastic sheath 14 are otherwise supported on an outer support ring 22 located between them. The outer support ring 22 tapers in the direction of a gap opening 24 between said sheaths 12, 14. According to the invention it is provided that said gap opening 24 between the sheaths 12, 14 is brought to a point at which the coats 12, 14 in coaxial arrangement with the longitudinal axis 20 of the memory in abutment with each other, up to this point the Wedge-like taper 26 of the outer support ring 22 leads, which is either, which is not shown in detail, integrally formed or as shown, at least two annular individual segments 28, 30 composed of metal.

Wie sich des weiteren aus der Figur ergibt, ist die Außenkontur 32 des Außenstützringes 22 in Richtung der Spaltöffnung 24 mit einer konvexen Krümmung versehen und seine gegenüberliegende Innenkontur 34 verläuft, ausgehend von der Spaltöffnung 24 in einer geradlinigen Schräge, die an der Stelle des Eintritts des Kragenteils 16 in eine zu der Längsachse 20 des Behälters parallele Anlagefläche ausmündet. Die Krümmung der Außenkontur 32 nimmt dabei in Richtung des freien Endes des zweiten Kunststoffmantels 14 zu. Durch die dahingehende Innen- und Außenkonturgestaltung für den Außenstützring 22 ist eine gute Krafteinleitung gewährleistet, und darüber hinaus eine sichere Anbindung der genannten Kunststoffmäntel 12, 14 im Bereich des Außenstützringes 22. Sofern der Außenstützring 22, wie dargestellt, aus metallischen Einzelsegmenten besteht, kann zumindest einer der beiden Einzelsegmente 28 oder 30 im randseitigen Bereich einen Vorsprung aufweisen, der in einer Art Übergriff in eine randseitige Radialausnehmung des anderen Einzelsegmentes einmündet. Hierdurch ist eine besonders gute Anhaftung beider Einzelsegmente aneinander möglich. Im Querschnitt nach der Figur gesehen, ist mithin das eine Einzelsegment 30 in der Art eines Anlegekeiles und das andere Einzelsegment 28 bis zum freien Ende des jeweiligen Kragenteiles 16 in der Art eines Parallelogrammes ausgebildet.As is further apparent from the figure, the outer contour 32 of the outer support ring 22 is provided in the direction of the gap opening 24 with a convex curvature and its opposite inner contour 34 extends, starting from the gap opening 24 in a rectilinear slope, which at the location of entry of Collar portion 16 opens into a parallel to the longitudinal axis 20 of the container contact surface. The curvature of the outer contour 32 increases in the direction of the free end of the second plastic sheath 14. By the pertinent inner and outer contour design for the outer support ring 22 a good force is ensured, and beyond a secure connection of said plastic shells 12, 14 in the region of the outer support ring 22. If the outer support ring 22, as shown, consists of metallic individual segments, at least one of the two individual segments 28 or 30 in the peripheral region have a projection which opens in a kind of encroachment in an edge-side radial recess of the other single segment. As a result, a particularly good adhesion of both individual segments to each other is possible. in the Cross-section as seen in the figure, therefore, is a single segment 30 in the manner of a Anlegekeiles and the other single segment 28 formed to the free end of the respective collar member 16 in the manner of a parallelogram.

Das Kragenteil 16 des ersten Mantels 12 stützt sich innenumfangseitig an einer weiteren Anlagefläche eines Innenstützringes 36 ab, der gleichfalls als starrer Metallring ausgebildet ist. Wie die Darstellung nach der Figur zeigt, braucht der Innenstützring 36 für die beiden Enden des Druckbehälters nicht gleich ausgebildet zu sein; charakteristisch ist jedoch, dass der jeweilige Innenstützring 36 entlang einer Außenumfangsfläche eine Ringnut aufweist, für die Aufnahme eines O-Dichtringes 38, der der Abdichtung der jeweiligen Medienzu- und -abfuhr dient. Ferner ist charakteristisch, dass der Innenstützring 36 sich derart in dem Außenstützring 22 abstützt, dass eine gemeinsame Begrenzungswand für die Medienzu- und -abfuhr geschaffen ist. Der aufgezeigte Innenstützring 36 ist in Richtung des Inneren des Druckbehälters mit einer Anlageschräge versehen, deren Neigung der Neigung der Schräge der Innenkontur 34 des Außenstützringes 22 angepasst ist, insbesondere dieser entspricht. Ferner ist die Außenkontur 32 des Außenstützringes 22 mit einer ringförmigen Vertiefung 40 versehen, in die das zuordenbare Ende des zweiten Kunststoffmantels 14 unter Anlage ausmündet.The collar part 16 of the first shell 12 is supported on the inner circumference side on a further contact surface of an inner support ring 36, which is also formed as a rigid metal ring. As the illustration of the figure shows, the inner support ring 36 need not be the same for the two ends of the pressure vessel; However, it is characteristic that the respective inner support ring 36 has an annular groove along an outer peripheral surface, for receiving an O-sealing ring 38, which serves to seal the respective media supply and removal. Further, it is characteristic that the inner support ring 36 is supported in the outer support ring 22 such that a common boundary wall for the media supply and removal is provided. The indicated inner support ring 36 is provided in the direction of the interior of the pressure vessel with a contact slope, the inclination of the inclination of the slope of the inner contour 34 of the outer support ring 22 is adapted, in particular this corresponds. Further, the outer contour 32 of the outer support ring 22 is provided with an annular recess 40 into which the assignable end of the second plastic sheath 14 opens out under investment.

Beidseits des Mittenumfanges 18 weist der zweite Kunststoffmantel 14 mindestens eine zusätzliche Wicklungslage 42 auf, die zum einen hilft den Berstdruck zu erhöhen und zum andern sicherstellt, dass im Berstfall etwaige massive Innenteile des Druckbehälters oder Druckspeichers nicht geschossartig nach außen treten können, sondern vielmehr von der Zusatzwicklung 42 zurückgehalten sind. In Abhängigkeit der Baulänge des Speichers kann die dahingehende Zusatzwicklung 42 nur einfach vorhanden sein oder in diskreten Abständen voneinander mehrfach. Der genannte Außenstützring 22 ist in der Lage in der Art eines Druckpuffers auftretende Spannungsspitzen gleichförmig zu verteilen und in die beiden Kunststoffmäntel 12, 14 einzuleiten. Dergestalt ist auch ein Ausbeulen des Druckbehälters wirksam vermieden. Da im Sinne einer Gleitbewegung im koaxialen Bereich die geringsten delaminierenden Relativbewegungen zwischen den einander zugewandten Seiten der Kunststoffmäntel 12, 14 auftreten könnten, genügt es insoweit die Abstützung und die Trennung der Lagen bzw. der beiden Mäntel 12, 14 voneinander im endseitigen Umfassungsbereich durch den Außenstützring 22 vorzunehmen. Die aufgezeigte Querschnitts-Keilform des Außenstützringes 22 ist insoweit günstig, als sie wirksam den genannten Relativverlagerungen entgegenwirkt, wozu die verschiedene Ausgestaltung von Außenkontur 32 zu Innenkontur 34 unterstützend mitwirkt. Trotz des Umstandes, dass bei der beschriebenen Druckbehälterlösung nur glatte Flächen im Einsatz sind, insbesondere bezogen auf den Innenstützring 36 sowie den Außenstützring 22, ist es überraschend, dass dergestalt in konstruktiv einfacher Weise ein hochfester und steifer Verbindungsteil im Bereich des Kragens 16 erreicht ist.On both sides of the central circumference 18, the second plastic sheath 14 has at least one additional winding layer 42 which on the one hand helps to increase the bursting pressure and on the other hand ensures that any massive internal parts of the pressure vessel or pressure accumulator can not escape outwards in the event of a burst, but rather on the outside Additional winding 42 are retained. Depending on the length of the memory the pertinent additional winding 42 can only be present simply or multiple times at discrete intervals. Said outer support ring 22 is capable of uniformly distributing stress peaks occurring in the manner of a pressure buffer and introducing them into the two plastic shells 12, 14. Such a bulging of the pressure vessel is effectively avoided. Since the slightest delaminating relative movements between the mutually facing sides of the plastic sheaths 12, 14 could occur in the sense of a sliding movement in the coaxial region, it suffices insofar the support and the separation of the layers or the two sheaths 12, 14 from each other in the end enclosure by the outer support ring 22 to make. The indicated cross-sectional wedge shape of the outer support ring 22 is favorable insofar as it effectively counteracts the said relative displacements, to which end the different configuration of the outer contour 32 to the inner contour 34 cooperates. Despite the fact that in the described pressure vessel solution only smooth surfaces are in use, in particular based on the inner support ring 36 and the outer support ring 22, it is surprising that in such a structurally simple manner a high-strength and rigid connecting part in the region of the collar 16 is reached.

Claims (8)

  1. A rotationally symmetrically formed pressurised container for holding at least one fluid medium, comprising a first plastic casing (12) and a second plastic casing (14) which at least partially encompasses the first plastic casing (12), the first plastic casing having at least on one end a collar part which comprises an opening (10) for the delivery and discharge of medium, the collar part (16) and the second plastic casing (14) being supported on an interposed outside support ring (22) which tapers in the manner of a wedge in the direction of a gap opening (24) between the aforementioned casings (12, 14), the gap opening (24) between the casings (12, 14) being routed as far as a point at which the casings (12, 14) are in contact with one another in a coaxial arrangement, and the wedge-like taper (26) on the outside support ring (22), which is made in one piece or which is composed of at least two annular individual segments (28, 30) of metal being routed as far as this point, and the collar part (16) of the first casing (12) being supported on the inner peripheral side by a further contact surface of an inside support ring (36), characterised in that the inside support ring (36) forms with the outside support ring (22) a common boundary wall for the delivery and discharge of medium.
  2. The rotationally symmetrically formed pressurised container according to Claim 1, characterised in that the outside contour (32) of the outside support ring (22) in the direction of the gap opening (24) is provided with a convex curvature and its opposite inside contour (34), proceeding from the gap opening (24), runs in a straight slope which at the point of entry of the collar part (16) ends in a contact surface which is parallel to the longitudinal axis (20) of the container.
  3. The rotationally symmetrically formed pressurised container according to Claim 1 or 2, characterised in that the inside contour ring (36) is also formed as a rigid metal ring.
  4. The rotationally symmetrically formed pressurised container according to any of the preceding claims, characterised in that the inside support ring (36) in the direction of the interior of the pressurised container is provided with a contact bevel which has a tilt which corresponds to the tilt of the bevel of the inside contour (34) of the outside support ring (22).
  5. The rotationally symmetrically formed pressurised container according to any of Claims 1 to 4, characterised in that the outside contour (32) of the outside support ring (22) is provided with a ring-shaped recess (46) in which the assignable end of the second plastic casing (14) ends with contact.
  6. The rotationally symmetrically formed pressurised container according to any of Claims 1 to 5, characterised in that the first plastic casing (12) is a plastic liner which is produced by a blow moulding or rotary or thermal process.
  7. The rotationally symmetrically formed pressurised container according to any of Claims 1 to 6, characterised in that the second plastic casing (14) consists of a winding of at least one type of fibres which forms a fibre reinforcement for the first plastic casing (12) at the point of the respective enclosure.
  8. The rotationally symmetrically formed pressurised container according to Claim 7, characterised in that the second plastic casing (14) has along its outer periphery an additional winding (42) at discrete distances from one another.
EP06792275.7A 2006-01-25 2006-09-26 Pressurised container Active EP1977153B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006004121A DE102006004121A1 (en) 2006-01-25 2006-01-25 Pressure tank for holding a liquid/gaseous fluid medium has a second plastic jacket encasing a first plastic jacket both attached to each other in a coaxial structure
PCT/EP2006/009331 WO2007085276A1 (en) 2006-01-25 2006-09-26 Pressurised container

Publications (2)

Publication Number Publication Date
EP1977153A1 EP1977153A1 (en) 2008-10-08
EP1977153B1 true EP1977153B1 (en) 2013-06-12

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EP06792275.7A Active EP1977153B1 (en) 2006-01-25 2006-09-26 Pressurised container

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US (1) US7959027B2 (en)
EP (1) EP1977153B1 (en)
JP (1) JP5032503B2 (en)
CN (1) CN101356400B (en)
DE (1) DE102006004121A1 (en)
ES (1) ES2416335T3 (en)
WO (1) WO2007085276A1 (en)

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Also Published As

Publication number Publication date
CN101356400A (en) 2009-01-28
DE102006004121A1 (en) 2007-07-26
US20100258573A1 (en) 2010-10-14
ES2416335T3 (en) 2013-07-31
JP5032503B2 (en) 2012-09-26
US7959027B2 (en) 2011-06-14
JP2009524777A (en) 2009-07-02
EP1977153A1 (en) 2008-10-08
WO2007085276A1 (en) 2007-08-02
CN101356400B (en) 2011-07-13

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