EP2276964B1 - Réservoir à gaz comprimé en matériau composite - Google Patents

Réservoir à gaz comprimé en matériau composite Download PDF

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Publication number
EP2276964B1
EP2276964B1 EP09749522.0A EP09749522A EP2276964B1 EP 2276964 B1 EP2276964 B1 EP 2276964B1 EP 09749522 A EP09749522 A EP 09749522A EP 2276964 B1 EP2276964 B1 EP 2276964B1
Authority
EP
European Patent Office
Prior art keywords
compressed gas
gas tank
end portion
component
closure element
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
EP09749522.0A
Other languages
German (de)
English (en)
Other versions
EP2276964A1 (fr
Inventor
Bastian Landeck
Gregor Fischer
Achim Baier
Sylvain Bastian
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke AG
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 Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP2276964A1 publication Critical patent/EP2276964A1/fr
Application granted granted Critical
Publication of EP2276964B1 publication Critical patent/EP2276964B1/fr
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
    • F17C1/14—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge constructed of aluminium; constructed of non-magnetic steel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • 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

Definitions

  • the invention relates to a composite compressed gas container for a gas, with an outer shell and a liner surrounded by this made of a light metal, in particular aluminum or an aluminum alloy, in whose inlet and outlet opening at least one channel for the supply and / or discharge of gas exhibiting closure element is used.
  • a container can be used for example or preferably on a motor vehicle to store CNG or hydrogen, for example, also in a cryogenic state, as energy carrier for the vehicle drive unit or for an auxiliary unit.
  • bottle-shaped composite compressed gas containers with aluminum liners are characterized by a relatively low weight and are thus well suited for storage of compressed gas in vehicles.
  • a recent development is to store cryogenic hydrogen under pressure in the supercritical state as an energy source for a Fzg. Drive unit. In certain operating states, the stored hydrogen can have a temperature of 35 Kelvin, while under other operating conditions, pressure values of the order of magnitude of 300 bar and more can occur in the pressure vessel system. It is desirable to keep an (undesired) heat input from the environment in the compressed gas tank as low as possible.
  • connection lines of a compressed gas tank via which this is loaded or unloaded, at the same time a heat exchange, ie it is through these connecting lines, the channel or channels for the supply of gas into the compressed gas tank or for the removal of gas contain the pressurized gas container, introduced heat from the environment in the interior of the gas cylinder. Therefore, the materials used for these connecting lines with a view to reducing the heat input into the compressed gas tank should have a relatively low thermal conductivity (with sufficient strength). Preferably, these connection lines can therefore be made in stainless steel.
  • connection line system In view of the above-mentioned high pressure values, the connections between individual lines of the connection line system and between the connection line (s) and the aluminum liner of the compressed gas container must also be absolutely pressure-tight, which is why practically only welded connections are possible.
  • Stainless steel as a material is not easy to weld with aluminum.
  • the solution consists of a composite compressed gas container with an outer shell and a liner of a light metal, in particular made of aluminum or an aluminum alloy, in whose inlet and outlet opening at least one channel for the supply and / or discharge of gas exhibiting closure element used and is connected directly or indirectly by a welded joint to the liner and at its channel or channels adjoining a steel material connecting line and wherein a transition element is provided, the first end portion made of light metal, in particular aluminum or an aluminum alloy, and either with welded to the liner or with the light metal, in particular of aluminum or an aluminum alloy closure element, and whose other end portion consists of a steel material, either with the existing of a steel material closure element or welded to the existing of a steel material connecting cable.
  • a so-called transition element is provided, through which the channel or channels continuing in the connecting line is / are guided directly or indirectly, ie with the interposition of another component.
  • the two end portions of this transition element are made of different materials, namely aluminum or a weldable aluminum alloy on the one hand and steel, preferably stainless steel on the other hand, whereby it is possible to relatively easily weld this transition element with its first end portion with an aluminum component of the pressurized gas container, its closure element and the connecting line assembly of the pressurized gas container, while the steel second end portion of the transition element relatively easily with one of a Steel component existing component of the pressure gas container, the closure element and the connecting line formed unit can be welded.
  • transition element of which an aluminum end section is connected to a (noble) steel end section
  • elaborate welded joints such as preferably friction welding or explosive welding on a separate transition element still relatively easy to implement, as long as no other components, such as the compressed gas tank itself or the connecting line (s) are in the vicinity or must be considered.
  • a clamping element surrounding the transition element, in particular in the joint region or joining region of the two materials (namely aluminum and steel).
  • FIGS. 1 - 4 show four embodiments in each case in a schematic representation as a section through the region of the supply and discharge opening of a composite compressed gas container according to the invention.
  • the same components are denoted by the same reference numerals and essential to the invention may be all the features described in more detail.
  • the reference numeral 1 denotes a composite compressed gas container, of which only the area in the vicinity of the inlet and outlet opening 1 c of this compressed gas container 1 is shown figuratively.
  • this composite compressed gas container consists of a so-called aluminum liner 1a, which is made of CFRP outer casing 1 b is wrapped. Within this liner 1 a cryogenic hydrogen is initially stored in a supercritical state and at pressures of 300 bar and more.
  • the hydrogen gas is introduced into the pressure gas container 1 or into the cavity of the liner 1 a via a feed channel 2 a, while for the removal of hydrogen gas from the compressed gas container 1 (for supplying a vehicle drive unit with this hydrogen as an energy source) a discharge channel 2b is provided.
  • These two channels 2a, 2b are inserted through a into the supply and discharge opening 1 c of the gas cylinder 1, the liner 1 a in this area in the manner of a bottle neck 1a * formed, inserted closure element 3 and penetrate directly or indirectly continue to be a so-called. Transition element 4, which will be discussed in more detail below.
  • the channels 2a and 2b continue in connecting lines 5a and 5b, which are made of stainless steel.
  • FIG. 1 is (also) the closure element 3 executed in stainless steel and connected via a threaded portion 11 with the liner 1a, that is screwed into the bottle neck 1a *.
  • this screw in conjunction with a conventional sealing element used can not meet the requirements of the tightness (especially over the entire possible temperature range), which is why it is necessary to represent a welded joint, but between the different materials, namely the aluminum material the liner 1a and the steel material of the closure element 3 is not easily possible.
  • Transition element 4 is provided here, which adjoins the end face of the bottle neck 1a * of the liner 1a with one side and rests with its other side on a stepped shoulder 3a of the closure element 3.
  • the second individual element 4b of the transitional element 4 which abuts the free end portion of the closure element 3 in a second, likewise annular and perpendicular to the channels 2a, 2b in the region of the bottle neck 1a *, is made of a steel material, so that in FIG In this second joining region 13, a welded connection between the second individual element 4b of the transition element 4 and the sealing element 3 made of noble steel can be produced simply.
  • the prefabricated transition element 4 After assembly or welding of the prefabricated transition element 4 with the liner 1 a on the one hand and with the closure element 3 on the other hand, on the outer circumference of the transition element 4 a particular in the joint area or joining region 14 of the two individual elements 4a, 4b and thus the two materials, namely Aluminum and steel, surrounding clamping element 6 are applied, which prevents potential deformations in particular of the transition element 4 due to the high pressure loads.
  • This tensioning element 6 may preferably be a shrunk-on steel ring.
  • the connecting elements 5 a, 5 b which are preferably made of noble steel, can easily be connected to the closure element 3, which is made of noble steel, in the region of the channels 2 a, 2 b via welded connections.
  • FIG. 2 assumes the transition element 4, more precisely, the liner 1 a facing individual element 4a at the same time Function of the closure element 3.
  • this single element 4a of the transition element 4 as well as the liner 1a is made of aluminum or in a suitable aluminum alloy and with the liner 1a or with the front side of the bottle neck 1a * in an annular, itself welded substantially perpendicular to the channels 2a, 2b joining region 12.
  • the individual element 4a of the transition element 4 is connected via a threaded portion 11 with the liner 1a, but this latter screw in conjunction with a conventional sealing element used can not meet the requirements for tightness (especially over the entire possible temperature range), which is why already mentioned weld joint is provided in the joining region 12.
  • the second individual element 4b of the transition element 4 is (again) made of steel, so that the two connecting lines 5a, 5b (again) can connect to this single element 4b with the channels 2a, 2b extending therein via a welded connection.
  • Analogous to the embodiment according to Fig.1 are also in this embodiment after FIG.
  • FIG. 3 is an independent closure element 3 is provided consisting of an aluminum material, which consequently with the liner 1a or with its bottleneck 1a * in an annular, substantially perpendicular to the course of the channels 2a, 2b in this area extending joining region 12 are simply welded can.
  • An equally simple welded connection is possible between the other end section of this closure element 3 and the here two transition elements 4, which are provided for the two channels 2a, 2b emerging in different directions from the closure element 3.
  • These two transition elements 4 In each case analogously to the preceding exemplary embodiments, in each case a first individual element 4a consisting of an aluminum material and a second individual element 4b adjoining this, consisting of a steel material, are provided.
  • FIG. 4 is similar to the embodiment according to FIG. 2 designed, with the difference that the single element 4b of the transition element 4, which here again forms the closure element 3, facing the inside of the container 1, while the other individual element 4a lies on the outside. Furthermore, in this embodiment, the connecting lines 5a, 5b welded to the single element 4b, while the individual element 4a is welded in the joining region 12 with the linear 1a.
  • transition element 4 which can be manufactured beforehand in a more elaborate production process, it is thus possible to connect leads 5a, 5b to a composite compressed gas container 1 with an aluminum liner 1a in a relatively simple and reliable manner via relatively simple welded joints

Landscapes

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

Claims (5)

  1. Réservoir de gaz comprimé en matériau composite (1) pour un gaz comprenant une enveloppe extérieure et une doublure (1a) en un métal léger, en particulier en aluminium ou en un alliage d'aluminium entouré par celle-ci, et dans les ouvertures d'entrée et de sortie (1c) du quel est inséré et relié à la doublure (1a) par une liaison par soudure au moins un élément de fermeture (3) en un métal léger, en particulier en aluminium ou en un alliage d'aluminium comportant au moins un canal (2a, 2b) pour l'introduction et/ou l'évacuation de gaz, et
    il est prévu un élément (4) constitué de l'assemblage d'éléments indépendants (4a, 4b) préfabriqué à l'écart du réservoir de gaz comprimé dont un premier segment d'extrémité (4a) est réalisé en un métal léger, en particulier en aluminium ou en un alliage d'aluminium et dont l'autre segment d'extrémité (4b) est réalisé en un acier, et qui est relié par son premier segment d'extrémité (4a) avec l'élément de fermeture (3) du réservoir de gaz comprimé (1) par une liaison par soudure,
    caractérisé en ce que
    l'autre segment d'extrémité (4b) réalisé en acier de l'élément (4) est soudé à au moins une conduite de connexion (5a, 5b) réalisée en acier.
  2. Réservoir de gaz comprimé composite conforme à la revendication 1,
    caractérisé en ce que
    le premier segment d'extrémité (4a) réalisé en un métal léger de l'élément (4) remplit la fonction d'élément de fermeture (3) alors que le second segment d'extrémité (4b) de cet élément (4) est tourné vers la face interne du réservoir de gaz comprimé (1).
  3. Réservoir de gaz comprimé composite conforme à la revendication 1,
    caractérisé en ce qu'
    il est respectivement prévu pour un canal d'introduction (2a) et un canal d'évacuation (2b) passant au travers de l'élément de fermeture (3), un élément propre (4) ou élément de transition (4) propre ces éléments étant respectivement soudés par leur premier segment d'extrémité (4a) sur l'élément de fermeture (3).
  4. Réservoir de gaz comprimé composite conforme à l'une des revendications précédentes,
    caractérisé en ce que
    les deux segments d'extrémité (4a, 4b) de l'élément ou élément de transition (4) sont reliés par soudage par friction, ou par soudage par explosion / placage par explosion et/ou par soudage par diffusion ou par laminage.
  5. Réservoir de gaz comprimé composite conforme à l'une des revendications précédentes,
    caractérisé en ce qu'
    il est prévu un élément de serrage (6) entourant l'élément ou élément de transition (4) en particulier dans la zone de jonction (14) des deux matériaux.
EP09749522.0A 2008-05-20 2009-04-02 Réservoir à gaz comprimé en matériau composite Not-in-force EP2276964B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008024292A DE102008024292A1 (de) 2008-05-20 2008-05-20 Composite-Druckgasbehälter
PCT/EP2009/002407 WO2009141032A1 (fr) 2008-05-20 2009-04-02 Réservoir à gaz comprimé en matériau composite

Publications (2)

Publication Number Publication Date
EP2276964A1 EP2276964A1 (fr) 2011-01-26
EP2276964B1 true EP2276964B1 (fr) 2016-03-23

Family

ID=40834344

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09749522.0A Not-in-force EP2276964B1 (fr) 2008-05-20 2009-04-02 Réservoir à gaz comprimé en matériau composite

Country Status (4)

Country Link
US (1) US8397939B2 (fr)
EP (1) EP2276964B1 (fr)
DE (1) DE102008024292A1 (fr)
WO (1) WO2009141032A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8690004B2 (en) 2012-06-04 2014-04-08 Paul Cruz Expandable high pressure tank for air compressor
DE102013202779A1 (de) 2013-02-20 2014-08-21 Bayerische Motoren Werke Aktiengesellschaft Druckbehälter mit Wärmetauscher für kryogen gespeichertes Medium
US10041163B1 (en) 2017-02-03 2018-08-07 Ge-Hitachi Nuclear Energy Americas Llc Plasma spray coating for sealing a defect area in a workpiece
US10670189B2 (en) * 2017-07-19 2020-06-02 General Electric Company Systems and methods for storing and distributing gases

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Also Published As

Publication number Publication date
US8397939B2 (en) 2013-03-19
DE102008024292A1 (de) 2009-11-26
EP2276964A1 (fr) 2011-01-26
US20110036848A1 (en) 2011-02-17
WO2009141032A1 (fr) 2009-11-26

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