EP1989477B1 - Pressure vessel for storing liquid or gaseous media - Google Patents

Pressure vessel for storing liquid or gaseous media Download PDF

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Publication number
EP1989477B1
EP1989477B1 EP06841190A EP06841190A EP1989477B1 EP 1989477 B1 EP1989477 B1 EP 1989477B1 EP 06841190 A EP06841190 A EP 06841190A EP 06841190 A EP06841190 A EP 06841190A EP 1989477 B1 EP1989477 B1 EP 1989477B1
Authority
EP
European Patent Office
Prior art keywords
collar
ring
core container
container according
pressure container
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.)
Not-in-force
Application number
EP06841190A
Other languages
German (de)
French (fr)
Other versions
EP1989477A1 (en
Inventor
Dietmar Müller
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
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Filing date
Publication date
Application filed by Xperion GmbH filed Critical Xperion GmbH
Publication of EP1989477A1 publication Critical patent/EP1989477A1/en
Application granted granted Critical
Publication of EP1989477B1 publication Critical patent/EP1989477B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
    • F17C1/02—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge involving reinforcing arrangements
    • F17C1/04—Protecting sheathings
    • F17C1/06—Protecting sheathings built-up from wound-on bands or filamentary material, e.g. wires
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F17C2201/0104—Shape cylindrical
    • F17C2201/0109—Shape cylindrical with exteriorly curved end-piece
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/05—Size
    • F17C2201/056—Small (<1 m3)
    • 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
    • F17C2203/01—Reinforcing or suspension means
    • F17C2203/011—Reinforcing means
    • F17C2203/012—Reinforcing means on or in the wall, e.g. ribs
    • 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
    • F17C2203/0658—Synthetics
    • F17C2203/066—Plastics
    • 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
    • F17C2203/0665—Synthetics in form of fibers or filaments radially wound
    • 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
    • F17C2203/0668—Synthetics in form of fibers or filaments axially wound
    • 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
    • F17C2203/0673—Polymers
    • 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
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0388—Arrangement of valves, regulators, filters
    • F17C2205/0394—Arrangement of valves, regulators, filters in direct contact with the pressure vessel
    • F17C2205/0397—Arrangement of valves, regulators, filters in direct contact with the pressure vessel on both sides of the pressure vessel
    • 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
    • F17C2209/00—Vessel construction, in particular methods of manufacturing
    • F17C2209/21—Shaping processes
    • F17C2209/2109—Moulding
    • F17C2209/2127—Moulding by blowing
    • 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
    • F17C2209/00—Vessel construction, in particular methods of manufacturing
    • F17C2209/21—Shaping processes
    • F17C2209/2109—Moulding
    • F17C2209/2145—Moulding by rotation
    • 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
    • F17C2223/01—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
    • F17C2223/013—Single phase liquid
    • 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
    • F17C2223/036—Very high pressure (>80 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
    • F17C2260/012—Reducing weight
    • 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
    • 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
    • F17C2260/03—Dealing with losses
    • F17C2260/035—Dealing with losses of fluid
    • F17C2260/036—Avoiding leaks

Definitions

  • the invention relates to a pressure vessel for storing liquid or gaseous media, comprising a plastic core container having at least one collar, which is arranged in the radial gap between a connection ring inserted therein for a pressure line and a collar surrounding the collar outside with a radially outwardly projecting collar , wherein the connecting ring and / or the support flange made of metal and having at least one open in the direction of the collar groove containing a sealingly pressed to the collar O-ring and wherein at least the plastic core container and the collar of a support shell of a fiber composite material at least partially are enclosed.
  • Such a pressure vessel is out of the DE 197 51 411 C1 known.
  • the metallic collar ends at its outer periphery in a sharp edge that touches the plastic core container adjacent. It also forms part of a neck piece, which is screwed onto a thread of the collar and in which a collar engaging in the hollow cone is screwed, which causes a radial contact pressure of the collar to the neck piece and an O-ring seal embedded therein.
  • the design requires a great deal of technical effort in the production and leads to a large weight.
  • a pressure vessel in which the core container consists of metal and in which the collar has a wedge-shaped outwardly tapered profile and is covered in the longitudinal direction of the pressure vessel on both sides by a buffer ring of plastically deformable, polymeric material in the space between the core container and engages the support shell and fills the gap formed by the distance between the core container and the support shell, wherein the buffer ring has an outer contour which connects the axially adjacent outer contours of the plastic core container and the Federal while avoiding a sudden change in direction into one another.
  • the collar has a profile that is rounded in the region of the radially outwardly projecting end.
  • the invention is based on the object to develop a pressure vessel of the type mentioned in such a way that results in a reduced manufacturing costs and a reduced weight.
  • the gap formed by the gap by a plastically deformable buffer ring made of polymeric material is completely filled and that the buffer ring has an outer contour which connects the axially adjoining outer contours of the plastic core container and the Federal while avoiding a sudden change in direction into one another.
  • the effective during use as intended in the interior of the plastic core container pressure forces are thereby optimally collected by the existing of a fiber composite support shell, without causing any functional impairing Relativverschiebitch the items of the pressure vessel.
  • the support shell can thereby be optimized in terms of carrying capacity and in terms of weight and pressure-induced respiratory movements can no longer cause the outer edge of the collar incorporated into the wall of the plastic core container or plastically deformed the wall at the contact point.
  • the collar ends at the radial outer edge in a circumferential nose, which surrounds the buffer ring in a partial region in a circumferential recess adapted profile radially on the outside.
  • the support shell facing surface is substantially uniformly curved and smooth. Even with extremely varying internal pressures is achieved by the production reasons evenly merging outer contours of the buffer ring, the federal and the plastic core container are retained and separation risks are avoided with respect to the adhesive connection of the support shell of the fiber composite.
  • the buffer ring has the main purpose of distributing the operationally prevailing in the interior of the plastic core container pressure in the manner of a hydraulic pressure distributor so evenly on the support shell and the support flange, that a lifting of the support shell in the transition zone is avoided.
  • the radially outwardly facing end of the collar can not come into direct physical contact with the plastic core container. Also, changing internal pressures can therefore no longer lead to the cutting of the metallic outer edge of the covenant in the plastic core container.
  • the fiber composite forming the support shell expediently contains fiber strands embedded in synthetic resin that intersect one another and that are located in the extend substantially in the longitudinal and circumferential directions.
  • the fiber strands are made of glass, carbon, aramid, boron and / or AI203 fibers depending on the intended use of the pressure vessel. They are applied after prior impregnation with a synthetic resin or thermoplastic in a winding process under pre-stress on the prefabricated and already provided with the fittings plastic core container and permanently fixed by solidification of the synthetic resin or thermoplastic.
  • the fiber composite forming the support sheath may additionally or alternatively also comprise fiber strands crossing one another, which are inclined in the longitudinal and circumferential directions and expediently also associated with the longitudinal axis of the plastic core container in a mirror-image inclined manner.
  • the longitudinal and circumferential forces can thereby be absorbed in an optimal manner.
  • 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 at least 50%, adjust, without resulting in functional impairments. This is a great advantage with regard to the installation of secondary valves.
  • the collar, the connecting ring and the support flange are expediently limited in the mutually facing surface areas by thread groove-free cylindrical surfaces.
  • the production is therefore particularly simple and weight-saving. Nevertheless, an excellent mutual sealing and durability is achieved
  • the O-ring can be made of any of the relevant permanently elastic, polymeric sealing materials, such as natural or synthetic rubber.
  • the plastic core container and / or the buffer ring expediently consist of polyamide.
  • Other polymeric materials may also be used in their manufacture as needed, such as PE, HDPE or PTFE. The selection is reserved for the user and results mainly from the chemical, physical and thermal requirements of the application.
  • the pressure vessel shown in the figures is used for storing liquid or gaseous media which are under a pressure of up to 2,000 bar. It is provided at both ends with connection openings for pressure lines and / or valves, which have different dimensions, but are designed identically in accordance with the invention.
  • the pressure vessel comprises a plastic core container 1 made of polyamide and is provided at both ends with integrally molded collar 2. It can be generated by a blow molding process or rotational sintering. to Clarification of the invention, only the construction in the region of one of the two collars is described, with the embodiments can be transferred to the other collar.
  • the collar 2 is arranged in the radial gap between a connecting ring 3 inserted therein for a pressure line and the collar 2 on the outside enclosing support flange 4 with a radially outwardly projecting collar 5, wherein the connecting ring 3 and / or the support flange 4 are made of metal.
  • the support flange 4 and the connecting ring 3 surround each other at the same time with abutting, cylindrical guide surfaces in the region adjoining the frontal end of the collar. They are thereby assigned to each other and the collar 2 concentric.
  • the support flange 4 engages over the connecting ring 3 with a radially inwardly extending stop surface which contacts the connecting ring 3 fitting and prevents relative tilting.
  • the collar 2, the connecting ring 3 and the support flange 4 are limited in all facing surface areas by thread groove-free cylindrical surfaces.
  • the connecting ring 3 has a groove open in the direction of the collar 2, which contains a sealing ring 2 pressed against the collar 2 in rubber. Due to the changing operating pressure relative displacements of the plastic core container 1 with respect to the connection ring 3 are thereby absorbed elastically, without causing leakage:
  • the O-ring seals may consist of sealing materials that are particularly adapted to the physical and / or chemical conditions of use. The same applies to the materials from which the plastic core container 1 is made.
  • the collar 5 and the plastic core container 1 are at least partially enclosed by one of a support shell 7 of a fiber composite, wherein between the collar 5 and the plastic core container 1 in which the outer circumference radially inwardly adjoining region is wedge-shaped outwardly in the radial direction widening distance is provided, wherein the gap formed by the gap is filled by a plastically deformable buffer ring 8 of polymeric material and wherein the buffer ring 8 has an outer contour, the axially adjacent outer contours of the plastic core container 1 and the Federal 5 while avoiding a sudden change in direction connecting into each other.
  • the support sheath 7 of the fiber composite material encloses the overall resulting outer contour with the static thickness required in each case, wherein the front ends are integrally overlapped in one another.
  • the pressure vessel thereby has the required strength not only in the radial but also in the axial direction.
  • the radial width of the buffer ring 8 occupies at least 50% of the radial width of the collar 5.
  • the metallic collar 5 terminates at the radial outer edge in a circumferential nose 9, which surrounds the polymeric buffer ring 8, consisting here of polyamide, radially outside in a partial area.
  • a good guidance of the buffer ring is obtained, which helps to prevent incorrect assembly or a pressure-related relative displacement with respect to the plastic core container 1.
  • the fiber composite forming the support sheath 7 contains intersecting fiber strands embedded in synthetic resin which are stacked in multiple layers and associated with the longitudinal direction at an angle of plus / minus 10 to 90 degrees, advantageously at an angle of 35-88 degrees.
  • the winding angles within each layer can be identical. They diverge in successive layers to meet the required strength requirements.
  • the fiber strands contained in the fiber composite contain carbon fibers which are embedded in a resin matrix of epoxy resin in a prestressed state.
  • the plastic core container and the buffer ring made of polyamide.
  • the use of dissimilar, polymeric materials is also possible.
  • the plastic core container has an inner diameter of 240 mm and the connecting ring one of 140 mm. This results in a pole ratio, i. a ratio of the inner diameter of the plastic core container 1 and the inner diameter of the connecting ring 3 of 58%, i. a value greater than 50%, which makes it easier to accommodate internals in the plastic core container.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)

Abstract

The container has a plastic core container (1) with neck arranged in a radial interstice between a connecting ring (3) and a support flange (4). The flange encloses the neck on its periphery and has a collar (5) that projects radially outward. A gap formed between the collar and the core container is filled with a buffer ring (8) that has an outer contour connecting contiguous outer contours of the core container and the collar.

Description

Die Erfindung betrifft einen Druckbehälter zur Speicherung von flüssigen oder gasförmigen Medien, umfassend einen Kunststoffkernbehälter mit zumindest einem Kragen, der in dem radialen Zwischenraum zwischen einem darin eingesetzten Anschlussring für eine Druckleitung und einem den Kragen außenseitig umschließenden Stützflansch mit einem radial nach außen vorstehenden Bund angeordnet ist, wobei der Anschlussring und/oder der Stützflansch aus Metall bestehen und zumindest eine in Richtung des Kragens offene Nut aufweisen, die einen an den Kragen dichtend angepressten O-Ring enthält und wobei zumindest der Kunststoffkernbehälter und der Bund von einer Stützhülle aus einem Faserverbundstoff zumindest anteilig umschlossen sind.The invention relates to a pressure vessel for storing liquid or gaseous media, comprising a plastic core container having at least one collar, which is arranged in the radial gap between a connection ring inserted therein for a pressure line and a collar surrounding the collar outside with a radially outwardly projecting collar , wherein the connecting ring and / or the support flange made of metal and having at least one open in the direction of the collar groove containing a sealingly pressed to the collar O-ring and wherein at least the plastic core container and the collar of a support shell of a fiber composite material at least partially are enclosed.

Stand der TechnikState of the art

Ein solcher Druckbehälter ist aus der DE 197 51 411 C1 bekannt. Der metallische Bund endet dabei an seinem Außenumfang in einem scharfkantigen Rand, der den Kunststoffkernbehälter anliegend berührt. Er bildet zugleich einen Bestandteil eines Halsstückes, das auf ein Gewinde des Kragens aufgeschraubt wird und in das ein in den Kragen eingreifender Hohlkegel einschraubbar ist, der eine radiale Anpressung des Kragens an das Halsstück und eine darin eingebettete O-Ringdichtung bewirkt. Die Konstruktion setzt einen großen technischen Aufwand bei der Herstellung voraus und führt zu einem großen Gewicht.Such a pressure vessel is out of the DE 197 51 411 C1 known. The metallic collar ends at its outer periphery in a sharp edge that touches the plastic core container adjacent. It also forms part of a neck piece, which is screwed onto a thread of the collar and in which a collar engaging in the hollow cone is screwed, which causes a radial contact pressure of the collar to the neck piece and an O-ring seal embedded therein. The design requires a great deal of technical effort in the production and leads to a large weight.

Aus der US-A-5287988 ist ein Druckbehälter bekannt, bei dem der Kernbehälter aus Metall besteht und bei dem der Bund ein keilförmig nach außen verjüngtes Profil hat und in Längsrichtung des Druckbehälters beiderseits von einem Pufferring aus plastisch verformbarem, polymerem Werkstoff bedeckt ist, der in den Zwischenraum zwischen dem Kernbehälter und der Stützhülle eingreift und den durch den Abstand zwischen dem Kernbehälter und der Stützhülle gebildeten Spalt ausfüllt, wobei der Pufferring eine Außenkontur aufweist, die die sich axial anschließenden Außenkonturen des Kunststoffkernbehälters und des Bundes unter Vermeidung einer sprunghaften Richtungsänderung ineinanderübergehend verbindet. Der Bund hat dabei ein Profil, dass im Bereich des radial nach außen vorstehenden Endes abgerundet ist. Die bei einer Verwendung von Kernbehältern aus polymerem Werkstoff resultierenden Abdichtungsprobleme werden in der Druckschrift nicht erwähnt. Diese Probleme sind bei solchen Druckbehältern von besonderer Bedeutung. In Bezug auf ihre Beseitigung sowie die Verminderung des Herstellaufwandes und des Gewichtes solcher Druckbehälter ist der Druckschrift nichts entnehmbar.From the US-A-5287988 a pressure vessel is known in which the core container consists of metal and in which the collar has a wedge-shaped outwardly tapered profile and is covered in the longitudinal direction of the pressure vessel on both sides by a buffer ring of plastically deformable, polymeric material in the space between the core container and engages the support shell and fills the gap formed by the distance between the core container and the support shell, wherein the buffer ring has an outer contour which connects the axially adjacent outer contours of the plastic core container and the Federal while avoiding a sudden change in direction into one another. The collar has a profile that is rounded in the region of the radially outwardly projecting end. The resulting in a use of core containers made of polymeric material sealing problems are not mentioned in the document. These problems are of particular importance in such pressure vessels. With regard to their elimination and the reduction of the manufacturing effort and the weight of such pressure vessels of the document is not removable.

Darstellung der ErfindungPresentation of the invention

Der Erfindung liegt die Aufgabe zu Grunde, einen Druckbehälter der eingangs genannten Art derart weiter zu entwickeln, dass sich ein verminderter Herstellaufwand und ein vermindertes Gewicht ergibt.The invention is based on the object to develop a pressure vessel of the type mentioned in such a way that results in a reduced manufacturing costs and a reduced weight.

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 subclaims refer to:

Bei dem erfindungsgemäßen Druckbehälter ist es demgemäss vorgesehen, dass zwischen dem Bund und dem Kunststoffkernbehälter zumindest in dem sich an den Außenumfang radial nach innen anschließenden Bereich ein sich in radialer Richtung nach außen keilförmig erweiternder Abstand vorgesehen ist, dass der durch den Abstand gebildete Spalt durch einen plastisch verformbaren Pufferring aus polymerem Werkstoff ganz ausgefüllt ist und dass der Pufferring eine Außenkontur aufweist, die die sich axial anschließenden Außenkonturen des Kunststoffkernbehälters und des Bundes unter Vermeidung einer sprunghaften Richtungsänderung ineinanderübergehend verbindet. Die während der bestimmungsgemäßen Verwendung in dem Inneren des Kunststoffkernbehälters wirksamen Druckkräfte werden dadurch in optimaler Weise von der aus einem Faserverbundstoff bestehenden Stützhülle aufgefangen, ohne dass es zu funktionsbeeinträchtigenden Relativverschiebungen der Einzelteile des Druckbehälters kommt. Die Stützhülle kann dadurch hinsichtlich der Tragfähigkeit und hinsichtlich des Gewichtes optimiert werden und druckbedingte Atmungsbewegungen können nicht mehr dazu führen, dass sich der Außenrand des Bundes in die Wandung des Kunststoffkernbehälters einarbeitet oder die Wandung an der Berührungsstelle plastisch verformt.In the pressure vessel according to the invention, it is accordingly provided that between the collar and the plastic core container at least in the region adjoining the outer circumference radially inwardly widening in the radial outward widening distance is provided that the gap formed by the gap by a plastically deformable buffer ring made of polymeric material is completely filled and that the buffer ring has an outer contour which connects the axially adjoining outer contours of the plastic core container and the Federal while avoiding a sudden change in direction into one another. The effective during use as intended in the interior of the plastic core container pressure forces are thereby optimally collected by the existing of a fiber composite support shell, without causing any functional impairing Relativverschiebungen the items of the pressure vessel. The support shell can thereby be optimized in terms of carrying capacity and in terms of weight and pressure-induced respiratory movements can no longer cause the outer edge of the collar incorporated into the wall of the plastic core container or plastically deformed the wall at the contact point.

Dabei ist es von wesentlicher Bedeutung, dass der Bund besonders verformungsresistent ist. Er hat zu diesem Zweck ein im wesentlichen dreieckiges Profil, bei dem die maximale Erstreckung in radialer Richtung im Bereich des ein- bis zweifachen der an der Wurzel gemessenen, maximalen Erstreckung in axialer Richtung liegt, vorteilhaft im Bereich des 1,3 bis 1,5-fachen.It is essential that the federal government is particularly resistant to deformation. He has for this purpose a substantially triangular profile, in which the maximum extent in the radial direction in the range of one to two times measured at the root, the maximum extent in the axial direction, advantageously in the range of 1.3 to 1.5 -fold.

Nach einer vorteilhaften Ausgestaltung ist es vorgesehen, dass der Bund am radialen Außenrand in einer umlaufenden Nase endet, die den Pufferring in einem Teilbereich in einer umlaufenden Eintiefung angepassten Profils radial außenseitig umschließt. Die der Stützhülle zugewandte Oberfläche ist im wesentlichen gleichmäßig gewölbt und glatt ausgebildet. Auch bei extrem wechselnden Innendrücken wird dadurch erreicht, dass die herstellungsbedingt gleichmäßig ineinanderübergehenden Außenkonturen des Pufferringes, des Bundes und des Kunststoffkernbehälters erhalten bleiben und Ablösungsgefahren bezüglich der adhäsiven Anbindung der Stützhülle aus dem Faserverbundstoff vermieden werden.According to an advantageous embodiment, it is provided that the collar ends at the radial outer edge in a circumferential nose, which surrounds the buffer ring in a partial region in a circumferential recess adapted profile radially on the outside. The support shell facing surface is substantially uniformly curved and smooth. Even with extremely varying internal pressures is achieved by the production reasons evenly merging outer contours of the buffer ring, the federal and the plastic core container are retained and separation risks are avoided with respect to the adhesive connection of the support shell of the fiber composite.

Der Pufferring hat vor allem den Zweck, den betriebsbedingt im Inneren des Kunststoffkernbehälters herrschenden Druck nach Art eines hydraulischen Druckverteilers so gleichmäßig auf die Stützhülle und den Stützflansch zu verteilen, dass ein Abheben der Stützhülle im Bereich der Übergangszone vermieden wird. Das radial nach außen zeigende Ende des Bundes kann in keinen direkten Berührungskontakt mit dem Kunststoffkernbehälter gelangen. Auch wechselnde Innendrücke können daher nicht mehr zum Einschneiden des metallischen Außenrandes des Bundes in den Kunststoffkernbehälter führen.The buffer ring has the main purpose of distributing the operationally prevailing in the interior of the plastic core container pressure in the manner of a hydraulic pressure distributor so evenly on the support shell and the support flange, that a lifting of the support shell in the transition zone is avoided. The radially outwardly facing end of the collar can not come into direct physical contact with the plastic core container. Also, changing internal pressures can therefore no longer lead to the cutting of the metallic outer edge of the covenant in the plastic core container.

Der die Stützhülle bildende Faserverbundstoff enthält zweckmäßig einander überkreuzende, in Kunstharz eingebettete Faserstränge, die sich im wesentlichen in Längs- und Umfangsrichtung erstrecken. Die Faserstränge bestehen in Abhängigkeit vom Verwendungszweck des Druckbehälters aus Glass-, Kohlenstoff-, Aramid-, Bor- und/oder AI203-Fasern. Sie werden nach vorausgegangener Tränkung mit einem Kunstharz oder Thermoplast in einem Wickelprozess unter Vorspannung auf den vorgefertigten und bereits mit den Armaturen versehenen Kunststoffkernbehälter aufgebracht und durch eine Verfestigung des Kunstharzes oder des Thermoplasten bleibend fixiert.The fiber composite forming the support shell expediently contains fiber strands embedded in synthetic resin that intersect one another and that are located in the extend substantially in the longitudinal and circumferential directions. The fiber strands are made of glass, carbon, aramid, boron and / or AI203 fibers depending on the intended use of the pressure vessel. They are applied after prior impregnation with a synthetic resin or thermoplastic in a winding process under pre-stress on the prefabricated and already provided with the fittings plastic core container and permanently fixed by solidification of the synthetic resin or thermoplastic.

Der die Stützhülle bildende Faserverbundstoff kann ergänzend oder alternativ auch einander überkreuzende Faserstränge umfassen, die der Längs- und Umfangsrichtung geneigt und zweckmäßig zugleich der Längsachse des Kunststoffkernbehälters spiegelbildlich geneigt zugeordnet sind. Die längs- und umfangsgerichteten Kräfte lassen sich hierdurch in optimaler Weise auffangen. Außerdem werden die Möglichkeiten verbessert, das Verhältnis des Öffnungsquerschnittes einer stirnseitigen Öffnung in Bezug zum Innendurchmesser des Kunststoffkernbehälters auf große Werte von mindestens 30%, vorzugsweise mindestens 50%, einzustellen, ohne dass sich Funktionsbeeinträchtigungen ergeben. In bezug auf den Einbau von Sekundärarmaturen ist das von großem Vorteil.The fiber composite forming the support sheath may additionally or alternatively also comprise fiber strands crossing one another, which are inclined in the longitudinal and circumferential directions and expediently also associated with the longitudinal axis of the plastic core container in a mirror-image inclined manner. The longitudinal and circumferential forces can thereby be absorbed in an optimal manner. 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 at least 50%, adjust, without resulting in functional impairments. This is a great advantage with regard to the installation of secondary valves.

Der Kragen, der Anschlussring und der Stützflansch sind zweckmäßig in den einander zugewandten Oberflächenbereichen durch gewinderillenfreie Zylinderflächen begrenzt. Die Herstellung ist dadurch besonders einfach und gewichtssparend. Dennoch wird eine ausgezeichnete gegenseitige Abdichtung und Dauerhaltbarkeit erreichtThe collar, the connecting ring and the support flange are expediently limited in the mutually facing surface areas by thread groove-free cylindrical surfaces. The production is therefore particularly simple and weight-saving. Nevertheless, an excellent mutual sealing and durability is achieved

Der O-Ring kann aus irgend einem der einschlägig verwendeten, dauerelastischen, polymeren Dichtungswerkstoffe bestehen, beispielsweise aus natürlichem oder synthetischem Gummi.The O-ring can be made of any of the relevant permanently elastic, polymeric sealing materials, such as natural or synthetic rubber.

Der Kunststoffkernbehälter und/oder der Pufferring bestehen zweckmäßig aus Polyamid. Andere polymere Werkstoffe können zu ihrer Herstellung bedarfsweise ebenfalls verwendet werden, beispielweise PE, HDPE oder PTFE. Die Auswahl bleibt dem Anwender vorbehalten und ergibt sich vor allem aus den chemischen, physikalischen und thermischen Anforderungen des Anwendungsfalles.The plastic core container and / or the buffer ring expediently consist of polyamide. Other polymeric materials may also be used in their manufacture as needed, such as PE, HDPE or PTFE. The selection is reserved for the user and results mainly from the chemical, physical and thermal requirements of the application.

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:

  • Fig.1 einen Druckbehälter in längsgeschnittener Darstellung
  • Fig. 2 einen vergrößerten Ausschnitt des stirnseitigen Endes eines Druckbehälters nach Fig. 1 in halbgeschnittener Darstellung
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 a pressure vessel in longitudinal section
  • Fig. 2 an enlarged section of the front end of a pressure vessel after Fig. 1 in half-cut representation

Ausführung der ErfindungEmbodiment of the invention

Der in den Figuren wiedergegebene Druckbehälter dient zur Speicherung von flüssigen oder gasförmigen Medien, die unter einen Druck von bis zu 2.000 bar stehen. Er ist an beiden Enden mit Anschlussöffnungen für Druckleitungen und/oder Ventile versehen, die unterschiedlich dimensioniert, aber in erfindungswesentlicher Hinsicht identisch gestaltet sind.The pressure vessel shown in the figures is used for storing liquid or gaseous media which are under a pressure of up to 2,000 bar. It is provided at both ends with connection openings for pressure lines and / or valves, which have different dimensions, but are designed identically in accordance with the invention.

Der Druckbehälter umfasst einen Kunststoffkernbehälter 1 aus Polyamid und ist an beiden Enden mit einstückig angeformten Kragen 2 versehen. Er kann durch einen Blasformprozess oder Rotationssintern erzeugt sein. Zur Verdeutlichung der Erfindung wird nur die Konstruktion im Bereich von einem der beiden Kragen beschrieben, wobei sich die Ausführungen auf den anderen Kragen übertragen lassen.The pressure vessel comprises a plastic core container 1 made of polyamide and is provided at both ends with integrally molded collar 2. It can be generated by a blow molding process or rotational sintering. to Clarification of the invention, only the construction in the region of one of the two collars is described, with the embodiments can be transferred to the other collar.

Der Kragen 2 ist in dem radialen Zwischenraum zwischen einem darin eingesetzten Anschlussring 3 für eine Druckleitung und einem den Kragen 2 außenseitig umschließenden Stützflansch 4 mit einem radial nach außen vorstehenden Bund 5 angeordnet, wobei der Anschlussring 3 und/oder der Stützflansch 4 aus Metall bestehen. Der Stützflansch 4 und der Anschlussring 3 umschließen einander zugleich mit aneinander anliegenden, zylindrischen Führungsflächen in dem sich an das stirnseitige Ende des Kragens anschließenden Bereich. Sie sind dadurch einander und dem Kragen 2 konzentrisch zugeordnet. Außerdem übergreift der Stützflansch 4 den Anschlussring 3 mit einer sich radial nach innen erstreckenden Anschlagfläche, die den Anschlussring 3 anliegend berührt und eine relative Verkantung verhindert. Dadurch wird eine zusätzliche Sicherheit gegen Relativverlagerungen des Anschlussringes 3 in bezug auf den Stützflansch 4 und den Kragen 2 erhalten. Der Kragen 2, der Anschlussring 3 und der Stützflansch 4 sind in allen einander zugewandten Oberflächenbereichen durch gewinderillenfreie Zylinderflächen begrenzt.The collar 2 is arranged in the radial gap between a connecting ring 3 inserted therein for a pressure line and the collar 2 on the outside enclosing support flange 4 with a radially outwardly projecting collar 5, wherein the connecting ring 3 and / or the support flange 4 are made of metal. The support flange 4 and the connecting ring 3 surround each other at the same time with abutting, cylindrical guide surfaces in the region adjoining the frontal end of the collar. They are thereby assigned to each other and the collar 2 concentric. In addition, the support flange 4 engages over the connecting ring 3 with a radially inwardly extending stop surface which contacts the connecting ring 3 fitting and prevents relative tilting. As a result, additional security against relative displacements of the connection ring 3 with respect to the support flange 4 and the collar 2 is obtained. The collar 2, the connecting ring 3 and the support flange 4 are limited in all facing surface areas by thread groove-free cylindrical surfaces.

Bei dem gezeigten Ausführungsbeispiel weist nur der Anschlussring 3 mit einer in Richtung des Kragens 2 offenen Nut auf, die einen an den Kragen 2 dichtend angepressten O-Ring 6 aus Gummi enthält. Durch den wechselnden Betriebsdruck verursachte Relativverlagerungen des Kunststoffkernbehälters 1 in bezug auf den Anschlussring 3 werden dadurch elastisch aufgefangen, ohne dass es zur Leckage kommt: Natürlich ist es auch möglich, bedarfsweise mehrere derartige O-Richtdichtungen zur Anwendung zu bringen und beispielsweise alternativ oder ergänzend in entsprechenden Nuten des Stützflansches unterzubringen. Die Sicherheit gegen eventuelle Leckagen lässt sich dadurch weiter erhöhen. Ferner können die O-Ringdichtungen aus Dichtungswerkstoffen bestehen, die an die physikalischen und/oder chemischen Anwendungsverhältnisse besonders angepasst sind. Gleiches gilt für die Werkstoffe, aus denen der Kunststoffkernbehälter 1 hergestellt ist.In the embodiment shown, only the connecting ring 3 has a groove open in the direction of the collar 2, which contains a sealing ring 2 pressed against the collar 2 in rubber. Due to the changing operating pressure relative displacements of the plastic core container 1 with respect to the connection ring 3 are thereby absorbed elastically, without causing leakage: Of course, it is also possible to bring several such O-directional seals as needed and, for example, alternatively or in addition to appropriate Accommodate grooves of the support flange. The security against possible leaks leaves thereby further increase. Furthermore, the O-ring seals may consist of sealing materials that are particularly adapted to the physical and / or chemical conditions of use. The same applies to the materials from which the plastic core container 1 is made.

Der Bund 5 und der Kunststoffkernbehälter 1 sind gemeinsam von einer von einer Stützhülle 7 aus einem Faserverbundstoff zumindest anteilig umschlossen, wobei zwischen dem Bund 5 und dem Kunststoffkernbehälter 1 in dem sich an den Außenumfang radial nach innen anschließenden Bereich ein sich in radialer Richtung nach außen keilförmig erweiternder Abstand vorgesehen ist, wobei der durch den Abstand gebildete Spalt durch einen plastisch verformbaren Pufferring 8 aus polymerem Werkstoff ausgefüllt ist und wobei der Pufferring 8 eine Außenkontur aufweist, die die sich axial anschließenden Außenkonturen des Kunststoffkernbehälters 1 und des Bundes 5 unter Vermeidung einer sprunghaften Richtungsänderung ineinanderübergehend verbindet. Die Stützhülle 7 aus dem Faserverbundwerkstoff umschließt die sich insgesamt ergebende Außenkontur mit der statisch jeweils erforderlichen Dicke, wobei die stirnseitigen Enden einstückig ineinanderübergehend übergriffen sind. Der Druckbehälter weist dadurch nicht nur in radialer sondern auch in axialer Richtung die erforderliche Festigkeit auf. Die radiale Weite des Pufferrings 8 nimmt mindestens 50% der radialen Weite des Bundes 5 ein.The collar 5 and the plastic core container 1 are at least partially enclosed by one of a support shell 7 of a fiber composite, wherein between the collar 5 and the plastic core container 1 in which the outer circumference radially inwardly adjoining region is wedge-shaped outwardly in the radial direction widening distance is provided, wherein the gap formed by the gap is filled by a plastically deformable buffer ring 8 of polymeric material and wherein the buffer ring 8 has an outer contour, the axially adjacent outer contours of the plastic core container 1 and the Federal 5 while avoiding a sudden change in direction connecting into each other. The support sheath 7 of the fiber composite material encloses the overall resulting outer contour with the static thickness required in each case, wherein the front ends are integrally overlapped in one another. The pressure vessel thereby has the required strength not only in the radial but also in the axial direction. The radial width of the buffer ring 8 occupies at least 50% of the radial width of the collar 5.

Der metallische Bund 5 endet am radialen Außenrand in einer umlaufenden Nase 9, die den polymeren Pufferring 8, vorliegend aus Polyamid bestehend, radial außenseitig in einem Teilbereich umschließt. Hierdurch wird eine gute Führung des Pufferrings erhalten, die dazu beiträgt, eine fehlerhafte Montage oder eine druckbedingte Relativverlagerung in bezug auf den Kunststoffkernbehälter 1 zu verhindern.The metallic collar 5 terminates at the radial outer edge in a circumferential nose 9, which surrounds the polymeric buffer ring 8, consisting here of polyamide, radially outside in a partial area. As a result, a good guidance of the buffer ring is obtained, which helps to prevent incorrect assembly or a pressure-related relative displacement with respect to the plastic core container 1.

Der die Stützhülle 7 bildende Faserverbundstoff enthält einander überkreuzende, in Kunstharz eingebettete Faserstränge, die in mehreren Lagen übereinandergeschichtet sind und die der Längsrichtung unter einem Winkel von plus/minus 10 bis 90 ° zugeordnet sind, vorteilhaft unter einem Winkel von 35 - 88°. Die Wickelwinkel innerhalb einer jeden Schicht können identisch sein. Sie weichen in den aufeinanderfolgenden Schichten voneinander ab, um den erforderlichen Festigkeitsanforderungen zu genügen.The fiber composite forming the support sheath 7 contains intersecting fiber strands embedded in synthetic resin which are stacked in multiple layers and associated with the longitudinal direction at an angle of plus / minus 10 to 90 degrees, advantageously at an angle of 35-88 degrees. The winding angles within each layer can be identical. They diverge in successive layers to meet the required strength requirements.

Die in dem Faserverbundstoff enthaltenen Faserstränge enthalten Fasern aus Kohlenstoff, die in vorgespanntem Zustand in eine Kunstharzmatrix aus Epoxidharz eingebettet sind.The fiber strands contained in the fiber composite contain carbon fibers which are embedded in a resin matrix of epoxy resin in a prestressed state.

Bei dem Ausführungsbeispiel besteht der Kunststoffkernbehälter und der Pufferring aus Polyamid. Die Verwendung abweichender, polymerer Werkstoffe ist ebenfalls möglich.In the embodiment, the plastic core container and the buffer ring made of polyamide. The use of dissimilar, polymeric materials is also possible.

Bei dem gezeigten Druckbehälter hat der Kunststoffkernbehälter einen Innendurchmesser von 240 mm und der Anschlussring einen solchen von 140 mm. Daraus errechnet sich ein Polverhältnis, d.h. ein Verhältnis aus dem Innendurchmesser des Kunststoffkernbehälters 1 und dem Innendurchmesser des Anschlussringes 3 von 58 %, d.h. ein Wert, der größer als 50 % ist, was es erleichtert, Einbauten in dem Kunststoffkernbehälter unterzubringen.In the pressure vessel shown, the plastic core container has an inner diameter of 240 mm and the connecting ring one of 140 mm. This results in a pole ratio, i. a ratio of the inner diameter of the plastic core container 1 and the inner diameter of the connecting ring 3 of 58%, i. a value greater than 50%, which makes it easier to accommodate internals in the plastic core container.

Claims (9)

  1. Pressure container for storing liquid or gaseous media, comprising a plastics material core container (1) with at least one collar (2), which is arranged in the radial space between a connection ring (3) inserted therein for a pressure line and a support flange (4), which outwardly surrounds the collar (2 and has a radially outwardly projecting shoulder (5), the connection ring (3) and/or the support flange (4) consisting of metal and having at least one groove that is open in the direction of the collar (2) and contains an O-ring (6) pressed onto the collar (2) in a sealing manner and at least the plastics material core container (1) and the shoulder (5) being at least partly surrounded by a support sleeve (7) mace of a fibre composite, characterised in that a spacing which widens outwardly in a wedge shape in the radial direction is provided between the shoulder (5) and the plastics material core container (1) at least in the region radially inwardly adjoining the outer periphery, in that the gap formed by the spacing is filled by a plastically deformable buffer ring (8) made of polymeric material and in that the buffer ring (8) has an outer contour, which connects the axially adjoining cuter contours of the plastics material core container (1) and of the shoulder (5) avoiding an abrupt change of direction so that they pass into one another and in that the shoulder (5) ends at the radial outer edge in a peripheral nose (9), which radially outwardly surrounds the buffer ring (8) in a part region.
  2. Pressure container according to claim 1, characterised in that the fibre composite forming the support sleeve (7) contains intersecting fibre strands embedded in synthetic resin and extending in the longitudinal and peripheral direction.
  3. Pressure container according to either of claims 1 or 2, characterised in that the fibre composite forming the support sleeve (7) comprises intersecting fibre strands, which are coordinated obliquely to the longitudinal and peripheral direction.
  4. Pressure container according to any one of claims 1 to 3, characterised in that the fibre strands contained in the fibre composite comprise glass fibres, carbon fibres and aramide fibres.
  5. Pressure container according to any one of claims 1 to 4, characterised in that the collar (2), the connection ring (3) and support flange (4) are delimited by thread channel-free cylinder faces at least in the mutually facing surface regions.
  6. Pressure container according to any one of claims 1 to 5, characterised in that the O-ring (6) consists of elastomeric material.
  7. Pressure container according to any one of claims 1 to 6, characterised in that the plastics material core container and/or the buffer ring consist of polyamide.
  8. Pressure container according to any one of claims 1 to 7, characterised in that the proportion of the opening cross section of an end face opening is at least 30% in relation to the internal diameter of the plastics material core container.
  9. Pressure container according to any one of claims 1 to 8, characterised in that the proportion of the opening cross section of an end face opening is at least 50% in relation to the internal diameter of the plastics material core container.
EP06841190A 2006-01-07 2006-12-28 Pressure vessel for storing liquid or gaseous media Not-in-force EP1989477B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006001052A DE102006001052A1 (en) 2006-01-07 2006-01-07 Pressure container for storing fluid or gaseous medium, has gap formed between collar and core container, and filled with buffer ring that has outer contour connecting contiguous outer contours of core container and collar
PCT/EP2006/012567 WO2007079971A1 (en) 2006-01-07 2006-12-28 Pressure vessel for storing liquid or gaseous media

Publications (2)

Publication Number Publication Date
EP1989477A1 EP1989477A1 (en) 2008-11-12
EP1989477B1 true EP1989477B1 (en) 2009-05-13

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EP (1) EP1989477B1 (en)
AT (1) ATE431521T1 (en)
DE (2) DE102006001052A1 (en)
WO (1) WO2007079971A1 (en)

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EP1989477A1 (en) 2008-11-12
WO2007079971A1 (en) 2007-07-19
ATE431521T1 (en) 2009-05-15
DE102006001052A1 (en) 2007-09-06
DE502006003752D1 (en) 2009-06-25

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