EP2757303A1 - Récipient sous pression et procédé de fabrication d'un récipient sous pression - Google Patents

Récipient sous pression et procédé de fabrication d'un récipient sous pression Download PDF

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Publication number
EP2757303A1
EP2757303A1 EP14150205.4A EP14150205A EP2757303A1 EP 2757303 A1 EP2757303 A1 EP 2757303A1 EP 14150205 A EP14150205 A EP 14150205A EP 2757303 A1 EP2757303 A1 EP 2757303A1
Authority
EP
European Patent Office
Prior art keywords
sealing cap
cylinder tube
sealing
pressure vessel
sealing layer
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.)
Withdrawn
Application number
EP14150205.4A
Other languages
German (de)
English (en)
Inventor
Helmut Schürmann
Stephan Löhr
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.)
Technische Universitaet Darmstadt
Original Assignee
Technische Universitaet Darmstadt
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 Technische Universitaet Darmstadt filed Critical Technische Universitaet Darmstadt
Publication of EP2757303A1 publication Critical patent/EP2757303A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/06—Closures, e.g. cap, breakable member
    • 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
    • F17C2201/0114—Shape cylindrical with interiorly 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
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0602—Wall structures; Special features thereof
    • F17C2203/0612—Wall structures
    • F17C2203/0614—Single wall
    • F17C2203/0619—Single wall with two layers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0634—Materials for walls or layers thereof
    • F17C2203/0636—Metals
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0634—Materials for walls or layers thereof
    • F17C2203/0658—Synthetics
    • F17C2203/0663—Synthetics in form of fibers or filaments
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2209/00—Vessel construction, in particular methods of manufacturing
    • F17C2209/23—Manufacturing of particular parts or at special locations
    • F17C2209/234—Manufacturing of particular parts or at special locations of closing end pieces, e.g. caps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/031—Air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F17C2221/033—Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
    • 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 receiving pressurized fluids with a cylinder tube and with a cylinder tube at a first end pressure-tight closing bottom, wherein the cylinder tube and the bottom are made separately and interconnected, and wherein the cylinder tube is a first wall layer of a Having fiber-plastic composite material.
  • Pressure vessels are needed for a variety of applications.
  • a compressible fluid such as natural gas or compressed air can be stored, transported and kept ready for later use.
  • a suitable fluid such as gas
  • a hydraulic cylinder mechanical work can be performed whereby a little compressible fluid such as hydraulic oil can be pressurized to transfer the pressure and to drive or displace a piston or plunger.
  • Pressure vessels are known in which the opposing bottoms are formed substantially in one piece with a substantially hollow cylindrical central part.
  • a conical or approximately elliptical shape of opposite end portions is considered to be particularly favorable for achieving a high compressive strength.
  • each own tools must be used, so there is no significant flexibility in the design.
  • a compressed air tank made of a fiber-reinforced plastic in which a cylinder tube is glued to a separately manufactured bottom or lid.
  • the cylinder tube and the base have, in an overlapping fastening region, protruding formations and recesses, by means of which an additional positive locking is produced.
  • additional sealing rings or sealing elements can be arranged between the bottom and the surrounding cylinder tube.
  • a permeation obstructing sealing layer completely covers an inner wall of the cylinder tube and a permeation obstructing sealing cap covers the bottom and an annular overlap region with the inner wall, wherein the sealing cap and the sealing layer in the overlap region are sealed together ,
  • a sealing cap according to the invention which together with the sealing layer in the cylinder tube forms a tightly closing and permeation-inhibiting coating of the bottom and in particular the transition region from the cylinder tube to the bottom, gaps and joints in the transition region can be covered in a fluid-tight manner.
  • the transition area is arranged at a distance from the floor.
  • the sealing cap also seamlessly covers the transition region between the bottom and the cylinder tube and in this region no joints or weakening areas are arranged which could impair the tightness during a long service life of the pressure vessel.
  • the sealing cap does not have to absorb any mechanical load and is supported from the outside by the cylinder tube and the floor.
  • the arrangement and position of the sealing cap within the pressure vessel is predetermined by the connection with the sealing layer arranged on the inner wall of the cylinder tube in the overlapping area. It is not necessary that the sealing cap is firmly or permanently connected to the ground.
  • the sealing cap it is advantageous for the sealing cap to lie loosely against the inner wall and the floor in the transition area. If the pressure vessel gives way due to a large pressure application, often first a slight warping and displacement of the soil occurs. By a deformation in the transition region there excessive mechanical stresses and strains could occur, which could endanger the tightness of the pressure vessel in this area, especially over a longer period of time. Since the sealing cap lies only loosely in the transition region, the commonly occurring minor deformations in the transitional area. Depending on the possibly different materials that are used for the cylinder tube and for the floor, and depending on the selected in each case mounting and fixing the bottom of the cylinder tube deformations of the bottom and the transition region can be accepted with alternating pressurization or even provided ,
  • the sealing cap between the overlap region and the bottom has a length compensation device.
  • the length compensation device is formed by an approximately hollow cylindrical compensating portion of the sealing cap, in which the sealing cap rests loosely and with at least one circumferentially formed fold on the inner wall of the cylinder tube.
  • the hollow cylindrical compensating portion of the sealing cap may be, for example, a few millimeters longer than the associated portion of the cylinder tube, so that the sealing cap in this transition region is not fully applied to the inner wall of the cylinder tube, but loosely applied, for example, wavy or with one or more folds on the cylinder tube. Should the soil displace slightly axially outwards or inwards due to a high pressure load, the sealing cap in the compensating section can expand accordingly and compensate for the deformation, without the additional stresses or strains excessive mechanical stresses of the sealing cap in the transition region arise.
  • sealing cap in the overlap region with sealing layer.
  • the sealing cap can be glued, for example.
  • the sealing cap in the overlap region is integrally bonded to the sealing layer.
  • a cohesive connection ensures a very high sealing effect.
  • a cohesive connection can be produced simply and cost-effectively, for example by welding.
  • a particularly dense and durable cohesive connection can be achieved in that the sealing cap and the sealing layer are made of the same material, preferably of a thermoplastic material.
  • the invention also relates to a method for producing such a pressure vessel.
  • a permeation obstructing sealing cap is arranged in the interior of the cylinder tube so that it covers the bottom and an annular overlap region with the inner wall, and that the sealing cap and the sealing layer are sealed together in the overlapping region. It is regarded as an important advantage of the sealing cap according to the invention that this sealing of the interior of the pressure vessel is independent of the soil used in the individual case and can be subsequently used and connected to the sealing layer of the cylinder tube. The floor must be able to absorb only the expected mechanical loads. A tight connection of the soil to the laterally surrounding cylinder tube is not absolutely necessary.
  • the sealing cap can be loosely applied to the floor, which facilitates the installation of the sealing cap. It is basically conceivable that the sealing cap is fixed at the designated position in the cylinder tube and connected to the sealing layer, before subsequently introduced into the bottom of the cylinder tube and fixed to the cylinder tube.
  • the sealing flap and the sealing layer are bonded together in a material-locking manner in order to improve the tightness of the transition from the sealing layer to the sealing cap and to be able to ensure a long service life of the pressure vessel.
  • the heating element may, for example, be a heating wire which is arranged or laid in the overlapping area in a plurality of bindings in the circumferential direction between the sealing cap and the sealing layer.
  • the heating wire may remain in the pressure vessel after welding since it is completely embedded in the surrounding material of the sealing cap and the sealing layer.
  • Fig. 1 schematically a section of a sectional view of an exemplary pressure vessel 1 is shown.
  • the pressure vessel 1 has a cylinder tube 2, which is of hollow cylindrical design, at least in a central region, as a lateral container wall.
  • a bottom 4 is fixed.
  • Both the cylinder tube 2 and the bottom 4 may be made of metal or of a fiber-plastic composite material, for example, wherein also different combinations of materials for the cylinder tube 2 and the bottom 4 are possible. Both the cylinder tube 2 and the bottom 4 are only partially shown.
  • the cylinder tube 2 has, on an inner wall 5, a sealing layer 6 approaching close to the base 4 and comprising a material hindering the permeation, which may be, for example, a suitable thermoplastic.
  • the sealing layer 6 can either be applied as a coating on the inner wall 5 of the cylinder tube 2 or be subsequently introduced as a film, inliner or additional sealing tube.
  • a bottom 4 covering the sealing cap 7 is arranged in the cylinder tube 2, a bottom 4 covering the sealing cap 7 is arranged.
  • a substantially hollow cylindrical side wall 8 of the sealing cap. 7 overlaps in an overlap region 9 with the sealing layer 6 and is in the overlap region 9 tightly connected to the sealing layer 6. Outside the overlap region 9, the sealing cap 7 is only loosely laterally against the inner wall 5 of the cylinder tube 2 and to the bottom 4. In particular, the sealing cap 7 is firmly connected in a transition region 10 of the cylinder tube 2 to the bottom 4 with neither the cylinder tube 2 nor with the bottom 4.
  • a possible type of sealing attachment of the sealing cap 7 with the sealing layer 6 in the overlapping region 9 is shown.
  • several turns of a heating wire 11 are arranged in the circumferential direction.
  • the surrounding areas of the sealing layer 6 and the sealing cap 7 are locally melted and welded together.
  • the heating wire 11 remains embedded in the surrounding material of the sealing layer 6 and the sealing cap 7 in the cylinder tube 2. The required for connection to a power source sections can be separated and removed.
  • the sealing layer 6 and the sealing cap 7 are advantageously made of the same permeation-inhibiting plastic material, so that a cohesive connection is easily and reliably possible.
  • the sealing layer 6 and the sealing cap 7 made of different materials to facilitate, for example with a first material, a coating of the inner wall 5 of the cylinder tube 2 and to allow a second material flexible cover of the bottom 4 through the sealing cap 7, the eventual deformations of the bottom. 4 can yield.
  • the sealing cap 7 between the overlap region 9 and the transition region 10 a compensation section 12.
  • the side wall 8 of the sealing cap 7 is not fully and closely against the inner wall 5 of the cylinder tube 2, but has a wavy course with several circumferential folds 13 in the circumferential direction.
  • the sealing cap 7 is not fixedly connected to the cylinder tube 2, but is loosely against the inner wall 5 of the cylinder tube 2 at. If the bottom 4 is deformed in the transition region 10 as a result of an alternating pressure load or slightly displaced in the axial direction, the sealing cap 7 can expand or contract in the compensation section 12 in the axial direction, without experiencing a significant mechanical stress.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Pressure Vessels And Lids Thereof (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
EP14150205.4A 2013-01-21 2014-01-06 Récipient sous pression et procédé de fabrication d'un récipient sous pression Withdrawn EP2757303A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102013100594.2A DE102013100594A1 (de) 2013-01-21 2013-01-21 Druckbehälter sowie Verfahren zum Herstellen eines Druckbehälters

Publications (1)

Publication Number Publication Date
EP2757303A1 true EP2757303A1 (fr) 2014-07-23

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ID=49885150

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14150205.4A Withdrawn EP2757303A1 (fr) 2013-01-21 2014-01-06 Récipient sous pression et procédé de fabrication d'un récipient sous pression

Country Status (2)

Country Link
EP (1) EP2757303A1 (fr)
DE (1) DE102013100594A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015106463B4 (de) * 2015-04-27 2022-11-03 Frauenthal Automotive Elterlein Gmbh Druckbehälter zur Speicherung von unter Druck stehenden Fluiden und Verfahren zur Herstellung des Druckbehälters
DE102016110803B4 (de) 2016-06-13 2021-11-18 Audi Ag Druckbehälter

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1105672B (de) * 1958-07-26 1961-04-27 Nordstroems Linbanor Ab Kompensationseinrichtung fuer Waermedehnungen bei Behaeltern mit loser Blechauskleidung
US3073475A (en) * 1959-10-30 1963-01-15 Minnesota Mining & Mfg Pressure vessel and method of making the same
US3508677A (en) * 1968-08-20 1970-04-28 Whittaker Corp Vessel for storing high-pressure gases
DE3331021A1 (de) 1982-09-07 1984-03-08 Fischer GmbH, 4910 Ried im Innkreis Stangenfoermiger hohlkoerper zur uebertragung von druck-, zug-, biege- und verdrehkraeften, verfahren zu seiner herstellung sowie vorrichtung zur durchfuehrung des beschriebenen verfahrens
DE3922577A1 (de) 1989-07-10 1991-01-24 Asea Gmbh Druckluftbehaelter aus faserverstaerktem kunststoff sowie verfahren und vorrichtung zu dessen herstellung
US6189723B1 (en) * 1999-05-10 2001-02-20 Gary R. Davis Composite laminated transport container for liquids
EP1085243A1 (fr) 1998-07-17 2001-03-21 Linnemann-Schnetzer GmbH Réservoir pour fluides sous pression
WO2003031860A1 (fr) * 2001-10-12 2003-04-17 Polymer & Steel Technologies Holding Company, L.L.C. Ensemble d'enceinte pressurisee composite et procede correspondant
DE102006006902A1 (de) 2006-02-09 2007-08-16 Gräfenthaler Kunststofftechnik GmbH Druckbehälter aus Kunststoff und Verfahren zu seiner Herstellung
EP1855046A1 (fr) * 2005-03-02 2007-11-14 Toyota Jidosha Kabushiki Kaisha Conteneur de gaz et méthode de production de celui-ci

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1105672B (de) * 1958-07-26 1961-04-27 Nordstroems Linbanor Ab Kompensationseinrichtung fuer Waermedehnungen bei Behaeltern mit loser Blechauskleidung
US3073475A (en) * 1959-10-30 1963-01-15 Minnesota Mining & Mfg Pressure vessel and method of making the same
US3508677A (en) * 1968-08-20 1970-04-28 Whittaker Corp Vessel for storing high-pressure gases
DE3331021A1 (de) 1982-09-07 1984-03-08 Fischer GmbH, 4910 Ried im Innkreis Stangenfoermiger hohlkoerper zur uebertragung von druck-, zug-, biege- und verdrehkraeften, verfahren zu seiner herstellung sowie vorrichtung zur durchfuehrung des beschriebenen verfahrens
DE3922577A1 (de) 1989-07-10 1991-01-24 Asea Gmbh Druckluftbehaelter aus faserverstaerktem kunststoff sowie verfahren und vorrichtung zu dessen herstellung
EP1085243A1 (fr) 1998-07-17 2001-03-21 Linnemann-Schnetzer GmbH Réservoir pour fluides sous pression
US6189723B1 (en) * 1999-05-10 2001-02-20 Gary R. Davis Composite laminated transport container for liquids
WO2003031860A1 (fr) * 2001-10-12 2003-04-17 Polymer & Steel Technologies Holding Company, L.L.C. Ensemble d'enceinte pressurisee composite et procede correspondant
EP1855046A1 (fr) * 2005-03-02 2007-11-14 Toyota Jidosha Kabushiki Kaisha Conteneur de gaz et méthode de production de celui-ci
DE102006006902A1 (de) 2006-02-09 2007-08-16 Gräfenthaler Kunststofftechnik GmbH Druckbehälter aus Kunststoff und Verfahren zu seiner Herstellung

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