EP2010815B1 - Inner container surrounded by an outer container, used for receiving a cryogenic liquid - Google Patents

Inner container surrounded by an outer container, used for receiving a cryogenic liquid Download PDF

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Publication number
EP2010815B1
EP2010815B1 EP07724475A EP07724475A EP2010815B1 EP 2010815 B1 EP2010815 B1 EP 2010815B1 EP 07724475 A EP07724475 A EP 07724475A EP 07724475 A EP07724475 A EP 07724475A EP 2010815 B1 EP2010815 B1 EP 2010815B1
Authority
EP
European Patent Office
Prior art keywords
top wall
caps
inner tank
wall
webs
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
EP07724475A
Other languages
German (de)
French (fr)
Other versions
EP2010815A1 (en
Inventor
Klaus Hausberger
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.)
Magna Steyr Fahrzeugtechnik GmbH and Co KG
Original Assignee
Steyr Daimler Puch Fahrzeugtechnik AG and Co KG
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Filing date
Publication date
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Publication of EP2010815A1 publication Critical patent/EP2010815A1/en
Application granted granted Critical
Publication of EP2010815B1 publication Critical patent/EP2010815B1/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
    • F17C3/00—Vessels not under pressure
    • 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
    • F17C2201/0147—Shape complex
    • 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
    • F17C2201/0147—Shape complex
    • F17C2201/0157—Polygonal
    • 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
    • F17C2201/0147—Shape complex
    • F17C2201/0166—Shape complex divided in several chambers
    • 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
    • F17C2201/0147—Shape complex
    • F17C2201/0171—Shape complex comprising a communication hole between chambers
    • 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
    • F17C2201/03—Orientation
    • F17C2201/035—Orientation with substantially horizontal main axis
    • 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
    • F17C2203/013—Reinforcing means in the vessel, e.g. columns
    • 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
    • F17C2203/014—Suspension means
    • 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
    • F17C2203/014—Suspension means
    • F17C2203/015—Bars
    • 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
    • F17C2203/03—Thermal insulations
    • 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
    • F17C2203/0626—Multiple walls
    • F17C2203/0629—Two walls
    • 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
    • F17C2203/0646—Aluminium
    • 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
    • F17C2203/0648—Alloys or compositions of 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
    • F17C2209/00—Vessel construction, in particular methods of manufacturing
    • F17C2209/21—Shaping processes
    • F17C2209/2109—Moulding
    • 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
    • F17C2209/22—Assembling processes
    • F17C2209/221—Welding
    • 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
    • F17C2209/22—Assembling processes
    • F17C2209/221—Welding
    • F17C2209/222—Welding by friction
    • 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
    • F17C2209/22—Assembling processes
    • F17C2209/227—Assembling processes by adhesive means
    • 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
    • F17C2209/22—Assembling processes
    • F17C2209/228—Assembling processes by screws, bolts or rivets
    • 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
    • F17C2209/232—Manufacturing of particular parts or at special locations of walls
    • 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
    • F17C2221/01—Pure fluids
    • 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
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, 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
    • 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
    • F17C2223/033—Small pressure, e.g. for liquefied gas
    • 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
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/04—Indicating or measuring of parameters as input values
    • F17C2250/0404—Parameters indicated or measured
    • F17C2250/0408—Level of content in the 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
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/04—Indicating or measuring of parameters as input values
    • F17C2250/0404—Parameters indicated or measured
    • F17C2250/043—Pressure
    • 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
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/04—Indicating or measuring of parameters as input values
    • F17C2250/0404—Parameters indicated or measured
    • F17C2250/0439—Temperature
    • 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
    • F17C2270/00—Applications
    • F17C2270/01—Applications for fluid transport or storage
    • F17C2270/0165—Applications for fluid transport or storage on the road
    • F17C2270/0168—Applications for fluid transport or storage on the road by vehicles

Definitions

  • the invention relates to a flanked by an outer container, for receiving a cryogenic liquid, in particular a fuel serving inner container in flattened construction, in particular inner tank for a road vehicle.
  • a flat rectangular construction of containers for cryogenic fuels is particularly desirable for use in motor vehicles. This results in the problem of achieving a sufficient strength or stability, in particular a sufficient Beulsteiftechnik or Beulfestmaschine of the container.
  • the container has an upper and a lower shell made of plastic, wherein the shells are connected to each other by means of a plurality of tubular tension struts, in order to prevent buckling of the container by the internal pressure.
  • the disadvantage is that for each vehicle model, a separate tank container must be developed, which also always requires new shapes and tools.
  • a container for liquid fuels is also from the GB 2089014 A known.
  • This container has a structure of a plurality of interconnected part-cylindrical lobes.
  • the object of the invention is to avoid the disadvantages and difficulties inherent in the prior art and has as its object the provision of a container of the type described in the introduction, in particular a cryotank for the storage of cooled liquid hydrogen, to create, which is simple and economical to produce, in a simple manner to a given cuboid space of a motor vehicle in the production adaptable, which also has a favorable ratio of the weight of the maximum absorbable liquid to the own weight and which allows, without subsequent processing, for example by providing holes for the purpose of filling and removal to get along.
  • this object is achieved by an inner container according to claim 1.
  • this Referenzdeck- and / or reference base wall is determined in each case as a plane connecting plane of the base or top side straight ends of the webs.
  • the cover and / or base wall has a curvature which depends substantially on the expected internal pressure in the inner container. According to the invention, it is ensured that the notch stresses between the curved surfaces of the base wall and / or the cover wall and, on the other hand, the effective dead spaces between the inner and outer tanks are kept small due to the predetermined slight curvature.
  • Curvatures greater than the curvatures according to the invention considerably jeopardize the space efficiency, in particular because, according to the prior art, multi-layer insulation (MLI, multi-layer insulation) is to be provided around the inner container.
  • MMI multi-layer insulation
  • the distance is defined as the normal distance.
  • one of the webs coincides with a substantially straight side wall.
  • an embodiment of an inner container with two chambers is provided in particular, wherein between the two chambers, a single web is provided, however, at least one of the two side walls is made substantially straight.
  • the side wall is considered as a second web.
  • the cover and / or base wall at least partially on a convex curvature seen from the outside.
  • At least one of the caps connects directly to the main body dull.
  • the cover and / or base wall in each case with respect to a flat Referenzdeck- and / or reference base wall a bulge with a centrally between the webs each between the inner contour of the cover and / or base wall and the plan Referenzdeck- and / or reference base wall measured distance of less than 25%, preferably less than 20%, more preferably less than 15% or 10% of the width of the chamber.
  • the base wall and / or the top wall are / is designed essentially flat.
  • the base and / or the top wall in each case with respect to a plan Referenzdeck- and / or reference base wall a bulge with a centrally between the webs each between the inner contour of the cover and / or base wall and the plan Referenzdeck- and / or reference base wall measured distance of more than 3%, in particular a distance in the range between 5% and 15%, preferably between 5% and 10%, of the width of the chamber.
  • the caps each overlap the ends of the chambers.
  • either individual caps are provided which close the chambers of the base body separately at one end of the main body or a cap which engages over a plurality of chambers and closes them together.
  • At least one of the caps forms a space connecting the chambers.
  • a gas or liquid exchange or compensation could take place via corresponding openings in the webs in the region of the main body.
  • At least one of the caps is substantially flat or flat.
  • a production of such a cap is particularly simple and inexpensive to implement.
  • a plurality of the caps are substantially planar and has at least one of the caps on a non-flat voluminous shape, said cap for the filling and / or extraction line and / or for receiving the sensor, for example, for determination the liquid level in the inner container, is provided.
  • At least one of the webs in the region of attachment of at least one of the caps on the base and / or top wall to a cut-free all webs have at least one free cut, in particular in each case at each end, a free cut.
  • a free cut is understood to mean, in particular, a return of an edge. Due to the free cut in the region of the attachment, which is preferably produced in the prior art by thermal methods such as welding or soldering, excessive production of the fastening seam, in particular the welding or soldering seam heat over the web is prevented. In this way, a uniform attachment seam between the cap and the body can be ensured.
  • the free cuts may contribute to the better communication of the chambers of the base body, wherein a corresponding gas or liquid exchange between the chambers of the inner container can be carried out by the free cuts.
  • At least one of the caps with a, preferably circumferential, attachment seam, in particular a weld, attached to the body, and the webs in each case in the region of, preferably circumferential, fastening seam, in particular a weld, a free cut.
  • At least one of the caps has a number of recesses into which projects the aligned in the longitudinal direction of the main body free end of at least one of the webs. According to this embodiment, the stability of the inner container and / or of the base cap closing cap (s) can be significantly increased.
  • the web is secured in the region of the recess of the cap via a weld on the cap.
  • a preferred in terms of strength and moderately favorable production embodiment is characterized in that the web is aligned approximately perpendicular to the base and parallel to its extending top wall of the body.
  • the inner container has a profile transversely to the longitudinal extent in the form of a rectangle, wherein for easy production of the caps, the longitudinal edges connecting the side walls with the base wall and the top wall are rounded.
  • a particularly favorable method of manufacturing the main body is given if it is designed as a one-piece extruded profile, wherein preferably the wall thicknesses of all walls are approximately equal or the wall thickness of a web is less than that of the base, cover and side walls.
  • a particularly favorable method of manufacturing the body is given when the wall thicknesses of all walls are about the same size or the wall thickness of a web is less than that of the base, cover and side walls.
  • the inner container is characterized in that the transitions between the web and the base or top wall are rounded with a curvature, in particular a radius, which is greater than or equal to the wall thickness of the web or the wall thickness of the base or top wall , According to a further embodiment, the transitions have a plurality of radii or at least parts of a free-form curve.
  • the base body and the caps made of light metal, in particular of an aluminum alloy.
  • the caps are deep-drawn, forged or cast, in particular cast with a die-casting process, wherein expediently the caps are connected to the main body by means of a circumferential weld.
  • the caps are connected to the base body by means of a circumferential weld.
  • the abutting edges are subjected to a pretreatment for connecting the caps with the base body, preferably at least one of the edges is provided with a fold to form an overlap of the components.
  • a fold is particularly advantageous for the use of fusion welding.
  • the friction stir welding has proven particularly useful. Furthermore, the so-called multi-orbital friction welding ("Rotary Friction Welding” or “Linear Friction Welding”) or the so-called “Friction Stir Welding” can be used to produce a weld.
  • any tank internals such as sensors for pressure and / or temperature and / or level and the necessary lines are provided inside a cap and optionally integrated into a pipe socket of a cap.
  • a filling and / or a removal opening is / are provided in one of the caps.
  • bearing elements are preferably arranged on the caps, which store the inner container to the outer container.
  • a bearing element is designed as a bearing bush, preferably made of an aluminum alloy and expediently provided in a local indentation of the cap, into which a plastic part, preferably a fiber composite component, can be inserted, which plastic part projects into a bearing bush provided on the outer container.
  • spacers may additionally be fastened to the caps or formed integrally with the caps.
  • a further assurance of the position of the inner container is given if a filling and removal line is guided on the top wall on the outside of the inner container.
  • At least one of the caps has a number of recesses, in which projects in the longitudinal direction of the main body aligned free end of at least one of the webs.
  • the web is secured in the region of the recess of the cap via a weld on the cap.
  • the web has a cutout in the region of the attachment of at least one of the caps on the base and / or top wall.
  • At least one of the caps with a, preferably circumferential, attachment seam, in particular a weld, attached to the body and the web has in each case in the region of, preferably circumferential, fastening seam, in particular a weld, a cut-free.
  • At least one of the caps has a number of recesses into which projects the aligned in the longitudinal direction of the body free end of the web.
  • the web is secured in the region of the recess of the cap via a weld on the cap.
  • FIG.1 a side view
  • Fig.2 shows an end view of an outer container in which an inner container is arranged for receiving a cryogenic fuel.
  • Figure 3 shows a section through the outer container according to the line III-III of Fig.1.
  • Figure 4 represents a section along the line IV-IV of Figure 3 represents.
  • Figure 5 illustrates an exploded view of the inner container, before its assembly and Fig.6 and Fig.7 show different configurations of a weld for the inner container.
  • a suspension of the inner container to the outer container is shown in detail in Figure 8 shown.
  • FIG. 9-11 another possible embodiment is shown.
  • FIG. 9 shows a side view in the longitudinal direction of the laterally open inner container
  • Fig. 10 an axonometric view of the body.
  • Fig. 11 is a section through and along one of the webs and the cap of the inner container illustrated.
  • Fig. 12-14 Another embodiment is the subject of Fig. 12-14 , in which Fig. 12 an axonometric view of this embodiment shows.
  • Fig. 13 is a side view in the longitudinal direction of the laterally open inner container shown and in Fig. 14 an enlarged view of one Fig. 13
  • Fig. 15 illustrates a part of the inner container in axonometric view, wherein for clarity, the cap and the main body are shown in an exploded view.
  • an inner container 3 which serves to receive a cryogenic liquid, in particular a cryogenic fuel.
  • a cavity surrounding the inner container 3 is provided between the inner 3 and the outer container 4 completely.
  • the inner container 3 is of three parts, which in detail Figure 5 are formed, of a base body 4, which is integrally formed, a flat smooth-surfaced cover and base wall 5, 6, which are connected to each other along the base body 4 extending side walls 7 via rounded portions 8. Between the side walls 7 are also provided longitudinally extending webs 9 parallel to these, which also connect the top wall 5 with the base wall 6 and are formed by the longitudinally extending chambers 10 which extend over the entire length of the base body 4.
  • the main body 4 is preferably made of light metal, in particular an aluminum alloy, and is advantageously and inexpensively produced by extrusion.
  • the wall thicknesses of all the walls 5, 6, 7, 9, the base body are about equally strong, with transitions between a web 9 and the base 6 and the top wall 5 are formed rounded to avoid stress peaks with a radius of expedient equal or greater is the wall thickness of the web 9 or the wall thickness of the base 6 or top wall 5.
  • the wall thickness of a web 9 if it allows the strength to be smaller than the wall thickness of the base 6, the cover 5 and the side walls 7.
  • a cap 11 can be attached, which is tightly connected to the base body 4, preferably via a weld 12. These caps 11 overlap the ends of all chambers 10 and form a chamber 10 connecting the free space 10 ', so the chambers 10 are conductively connected to each other with a relatively large cross section.
  • the caps 11 are either deep-drawn, forged or cast, preferably with a die-casting process.
  • abutting edges 13, 14 are subjected to a pretreatment, with expedient variants in Fig.6 and Fig.7 are shown.
  • a fold 15 is incorporated to form an overlap.
  • the friction stir welding has proven particularly useful.
  • a preferred variant is in Fig. 8 shown.
  • a bearing bush 18 is provided on a recess 17 of the inner container, preferably also made of an aluminum alloy.
  • a plastic body 19, preferably designed as a fiber composite plastic pipe with metal coating can be used.
  • This plastic body 19 projects into a bearing bushing 21 provided in a recess 20 of the outer tank 1, preferably likewise made of an aluminum alloy.
  • the bushings 18, 21 are glued to the outer container 1 and the inner container 3, welded or integrally formed with these.
  • the plastic body 19 may be glued or screwed to the bearing bushes 18, 21, for example by means of a union nut.
  • a further securing position of the inner container 3 in the outer container 1 can be provided by spacers 22 arranged on the caps 11 (or integrally formed therewith) and resting against the outer container 1. Removal and filling lines 23, which are arranged on the outside of the top wall 5, also contribute to the stabilization of the position of the inner container 3 in the outer container 1 at.
  • Any tank installations such as sensors for pressure and / or temperature and / or level and the necessary lines and a removal or filling 23 are provided inside one of the caps 11 or both caps 11, wherein any outwardly leading pipe socket in the Caps 11 integrated sin.
  • the high loadable base body 4 results in connection with the caps 11 formed as curved shells on all sides equally high pressure vessel.
  • the base body 4 can be produced inexpensively in a short production time, it is only necessary to separate for different sized tanks this body 4 in different lengths from the extruded profile.
  • the number of existing in the base body 4 chambers 10 can of course be varied and is at best dependent on the desired inner volume of the inner container. 3
  • the production of the inner container 3 can be much faster, more reliable and cheaper than, for example, the production of a barrel-shaped inner container.
  • FIG. 9 another possible embodiment of an inner container 24 according to the invention is shown.
  • webs 25 connect the base 26 with the top wall 27 of the body 28 and thus form in the body chambers for storing a gas and / or a liquid. Between the webs 25, the chamber 29 are arranged.
  • the main body 28 of the Fig. 9 essentially a planar base 26 and top wall 27 on.
  • the webs 25 in the region of the base 26 and the top wall 27 each free cuts 30. These free cuts 30 are provided in the region of contact of the cap 31 with the main body 28, in particular the contact of the cap 31 with the base 26 and the top wall 27 of the base body. If the cap 31 is welded to the main body 28, it prevents the welding heat from being dissipated excessively over the web 25 by the welding points 32 during the welding process. How out Fig. 11 it can be seen that the cap bluntly, in particular as a so-called butt weld, to the body. Such a butt weld can be produced for example by friction stir welding. In this way, a uniform weld can be ensured.
  • the chambers 29 of the body 28 can communicate with each other.
  • a, for example, arched, cap 31 is provided, which closes only a single chamber and does not overlap over a plurality of chambers 29.
  • the cap 31 is attached to the base 26 and the top wall 27 as well as to the webs 25 bounding the chamber 29 on both sides, in particular by welding and / or soldering.
  • FIG. 12-14 differs from the embodiments already discussed in that the base 33 and the top wall 34 each have a slight curvature, in particular at least partially - seen from the outside - convex curvature having.
  • a slight curvature on the one hand significantly improves the stability of the inner container, and on the other hand ensures efficient use of space and a good insulating capacity of the inner container.
  • For the determination of the curvature is starting from a plane reference plane 35 each in the region of the base 33 or top wall 34 in the middle (center line M) between the webs 36 of the chamber 37 of the Normal distance D between the reference plane 35 and the inner contour of the base 33 or top wall 34 measured.
  • the distance D is about 8% of the width of the chamber B (measured in the region of the reference plane).
  • the flat reference plane 35 is in each case determined as a plane connecting plane of the base or top wall-side straight ends of the webs 36 (without or in front of a possibly provided rounding in the transition to the base or top wall).
  • FIG. 15 Another embodiment is accordingly Fig. 15 shown.
  • a flat cap 38 is provided, which closes the chambers 39 of the base body 40.
  • How out Fig. 15 can be seen on the webs 41 in the area in which the webs 41 adjacent to the base and top wall also free cuts 42 are provided. If the cap 38 is attached to the base body 40 along the outer edge 43 with a welding or soldering seam, this ensures a uniform welding or soldering seam.
  • a gas and / or liquid equalization between the chambers 39 can take place via the recesses or free cuts 42 in the base body 40 closed by the cap 38. How out Fig. 15 wents seen, the cap 38 elongated recesses 43.
  • these elongate recesses substantially correspond to the dimensions of the longitudinal ends 44 of the webs 41. If the main body 40 is closed by the cap 38, the longitudinal ends 44 of the webs 41 protrude into the corresponding recesses 43. According to a preferred embodiment of the invention, the longitudinal ends 44 of the webs 41 pass through the corresponding recesses 43 of the cap 38 and protrude out of the cap 38 on the side of the cap 38 facing away from the chambers 39. According to a particular embodiment, the longitudinal ends 44 of the webs 41 are secured in the region of the recesses 43 with the cap 38, for example by a gas-tight welding or soldering. By this additional attachment, the stability of the inner container can be further improved and a particularly compact design of the inner container can be realized.

Abstract

A flat inner container (3), especially an internal tank for a road vehicle, which is surrounded by an outer container (1) and is used for receiving a cryogenic liquid, particularly a fuel. The inner container (3) comprises a combination of the following features: a longitudinally extending monolithic base (4) with a top wall (5) and a bottom wall (6) which are connected to also longitudinally extending sidewalls (7), and with at least two longitudinally extending, substantially straight webs (9) that connect the bottom wall (6) to the top wall (5) so as to form at least one longitudinally extending chamber (10) which is arranged between the webs, extends along the entire length of the base (4) as well as from the bottom wall (6) to the top wall (5), and has a predetermined width between the webs; and at least two caps (11) which tightly seal the two open ends of the base (4) at the periphery; the top wall and/or the bottom wall is/are provided with an arch relative to a planar reference top wall and/or reference bottom wall, the distance of the arch between the inner contour of the top wall and/or the bottom wall and the planar reference top wall and/or reference bottom wall amounting to less than 30 percent of the width of the chamber in the center between the webs.

Description

Die Erfindung betrifft einen von einem Außenbehälter umgebenen, zur Aufnahme einer kryogenen Flüssigkeit, insbesondere eines Kraftstoffes, dienenden Innenbehälter in abgeflachter Bauweise, insbesondere Innentank für ein Straßenfahrzeug.The invention relates to a flanked by an outer container, for receiving a cryogenic liquid, in particular a fuel serving inner container in flattened construction, in particular inner tank for a road vehicle.

Üblicherweise werden für den Einsatz in Kraftfahrzeugen kryogene Treibstoffe in zylinderförmigen, d.h. tonnenförmigen Behältern, die als doppelwandige Stahlbehälter ausgebildet sind, eingesetzt. Hiermit ist jedoch nur eine schlechte Raumausnutzung erzielbar; solche Stahlbehälter nehmen den gesamten Kofferraum eines Kraftfahrzeugs in Anspruch. Die DE 101 63 029 A1 zeigt einen solchen tonnenförmigen Hochdruckwasserstofftank, bei dem eine innenseitige Polyethylenauskleidung mit einer äußeren Wicklung umgeben ist, die einen Aufwölbungseffekt verhindern soll.Usually for use in motor vehicles cryogenic fuels in cylindrical, ie barrel-shaped containers, which are designed as double-walled steel containers used. This, however, only a poor utilization of space can be achieved; Such steel containers occupy the entire trunk of a motor vehicle. The DE 101 63 029 A1 shows such a barrel-shaped high-pressure hydrogen tank, in which an inside polyethylene liner is surrounded with an outer winding, which should prevent a bulging effect.

Eine flache quaderförmige Bauweise von Behältern für kryogene Kraftstoffe ist insbesondere für den Einsatz in Kraftfahrzeugen erwünscht. Dabei ergibt sich das Problem, eine hinreichende Festigkeit bzw. Stabilität, insbesondere eine ausreichende Beulsteifigkeit bzw. Beulfestigkeit, des Behälters zu erzielen.A flat rectangular construction of containers for cryogenic fuels is particularly desirable for use in motor vehicles. This results in the problem of achieving a sufficient strength or stability, in particular a sufficient Beulsteifigkeit or Beulfestigkeit of the container.

Übliche Verstärkungsmaßnahmen für Behälter mit großen ebenen Flächen sind meist sehr massiv. Dicke Blechwandstärken verursachen sowohl eine aufwändige Fertigungstechnik als auch Fügetechnik durch viele eingesetzte Stegbleche oder Schottbleche bei Kryoinnentanks; schließlich ist ein hohes Gewicht die Folge.Conventional reinforcement measures for containers with large flat surfaces are usually very massive. Thick sheet wall thicknesses cause both an elaborate production technique and joining technique by many used web plates or bulkhead plates in Kryoinnentanks; Finally, a high weight is the result.

Ein Behälter der eingangs beschriebenen Art in Flachbauweise ist beispielsweise aus der EP 1 067 300 A1 bekannt. Der Behälter weist eine obere und eine untere Schale aus Kunststoff auf, wobei die Schalen mittels einer Vielzahl von rohrförmigen Zugstreben miteinander verbunden sind, um ein Ausbeulen des Behälters durch den Innendruck zu vermeiden. Hiermit ist zwar eine günstige Raumausnutzung möglich, zumal der Behälter an den zur Verfügung stehenden Stauraum angepasst werden kann, nachteilig ist jedoch, dass für jedes Kraftfahrzeugmodell ein eigener Tankbehälter entwickelt werden muss, was jedenfalls auch stets neue Formen und Werkzeuge bedingt.A container of the type described in flat construction example, from the EP 1 067 300 A1 known. The container has an upper and a lower shell made of plastic, wherein the shells are connected to each other by means of a plurality of tubular tension struts, in order to prevent buckling of the container by the internal pressure. Hereby, although a favorable space utilization is possible, especially since the container can be adapted to the available storage space, the disadvantage is that for each vehicle model, a separate tank container must be developed, which also always requires new shapes and tools.

Ein Behälter für flüssige Kraftstoffe ist auch aus der GB 2089014 A bekannt. Dieser Behälter weist eine Struktur aus mehreren, miteinander verbundenen teilzylindrischen Lappen auf.A container for liquid fuels is also from the GB 2089014 A known. This container has a structure of a plurality of interconnected part-cylindrical lobes.

Aus der EP 895017 A ist weiters ein Hochdruckbehälter bekannt, der aus aneinandergefügten, zylindrischen Behälterteilen besteht.From the EP 895017 A Furthermore, a high-pressure vessel is known, which consists of joined, cylindrical container parts.

Die Erfindung bezweckt die Vermeidung der dem Stand der Technik anhaftenden Nachteile und Schwierigkeiten und stellt sich die Aufgabe, einen Behälter der eingangs beschriebenen Art, insbesondere einen Kryotank zur Aufbewahrung von gekühltem flüssigem Wasserstoff, zu schaffen, der einfach und wirtschaftlich herstellbar ist, in einfacher Weise an einen vorgegebenen quaderförmigen Bauraum eines Kraftfahrzeugs bei der Herstellung anpassbar ist, der zudem ein günstiges Verhältnis des Gewichts der maximal aufnehmbaren Flüssigkeit zum Eigengewicht aufweist und der es ermöglicht, ohne nachträgliche Bearbeitung, beispielsweise durch Vorsehen von Bohrungen zum Zwecke der Befüllung und Entnahme, auszukommen.The object of the invention is to avoid the disadvantages and difficulties inherent in the prior art and has as its object the provision of a container of the type described in the introduction, in particular a cryotank for the storage of cooled liquid hydrogen, to create, which is simple and economical to produce, in a simple manner to a given cuboid space of a motor vehicle in the production adaptable, which also has a favorable ratio of the weight of the maximum absorbable liquid to the own weight and which allows, without subsequent processing, for example by providing holes for the purpose of filling and removal to get along.

Erfindungsgemäß wird diese Aufgabe durch einen Innenbehälter nach Anspruch 1 gelöst. Für die Bestimmung der Aufwölbung der Deck- und/oder Basiswand wird dabei eine plane Referenzdeck- und/oder Referenzbasiswand definiert, wobei diese Referenzdeck- und/oder Referenzbasiswand jeweils als plane Verbindungsebene der basis- oder deckseitigen geraden Enden der Stege bestimmt ist.According to the invention this object is achieved by an inner container according to claim 1. For the determination of the curvature of the cover and / or base wall while a flat Referenzdeck- and / or reference base wall is defined, this Referenzdeck- and / or reference base wall is determined in each case as a plane connecting plane of the base or top side straight ends of the webs.

Nach einer Ausführungsform der Erfindung weist die Deck- und/oder Basiswand eine Krümmung auf, die im Wesentlichen von dem zu erwartenden Innendruck im Innenbehälter abhängt. Erfindungsgemäß wird gewährleistet, dass durch die vorgegebene leichte Krümmung die auftretenden Kerbspannungen zwischen den gekrümmten Oberflächen der Basiswand und/oder der Deckwand und andererseits die effektiven Toträume zwischen dem Innen- und Außentank klein gehalten werden.According to one embodiment of the invention, the cover and / or base wall has a curvature which depends substantially on the expected internal pressure in the inner container. According to the invention, it is ensured that the notch stresses between the curved surfaces of the base wall and / or the cover wall and, on the other hand, the effective dead spaces between the inner and outer tanks are kept small due to the predetermined slight curvature.

Krümmungen größer als die erfindungsgemäßen Krümmungen gefährden die Bauraumeffizienz erheblich, insbesondere deshalb, da nach dem Stand der Technik um den Innenbehälter eine Multilagenisolation (MLI, multi-layer-isolation) vorzusehen ist.Curvatures greater than the curvatures according to the invention considerably jeopardize the space efficiency, in particular because, according to the prior art, multi-layer insulation (MLI, multi-layer insulation) is to be provided around the inner container.

Als Abstand wird dabei definitionsgemäß der Normalabstand angesehen.By definition, the distance is defined as the normal distance.

Nach einer besonderen Ausführungsform fällt einer der Stege mit einer im Wesentlichen geraden Seitenwand zusammen. Dabei ist im speziellen eine Ausführung eines Innenbehälters mit zwei Kammern vorgesehen, wobei zwischen den zwei Kammern ein einziger Steg vorgesehen ist, jedoch zumindest eine der beiden Seitenwände im wesentlichen gerade ausgeführt ist. Insbesondere für die Bestimmung der Wölbung der Basis- und/oder Deckenwand nach Anspruch wird dabei die Seitenwand als zweiter Steg angesehen. Vorzugsweise weist die Deck- und/oder Basiswand zumindest teilweise eine von außen gesehen konvexe Krümmung auf.According to a particular embodiment, one of the webs coincides with a substantially straight side wall. In this case, an embodiment of an inner container with two chambers is provided in particular, wherein between the two chambers, a single web is provided, however, at least one of the two side walls is made substantially straight. In particular, for the determination of the curvature of the base and / or ceiling wall according to claim, the side wall is considered as a second web. Preferably, the cover and / or base wall at least partially on a convex curvature seen from the outside.

Nach einer Ausführungsform der Erfindung weist der Behälter folgende Merkmale auf:

  • einen sich längs erstreckenden einstückigen Grundkörper mit im Wesentlichen ebener Deck- und ebener Basiswand, die mit sich ebenfalls längs erstreckenden Seitenwänden verbunden sind, und mit mindestens einem längs verlaufenden, die Basiswand mit der Deckwand verbindenden Steg zur Bildung mindestens zweier nebeneinander liegender und sich längs erstreckender Kammern, die sich über die gesamte Länge des Grundkörpers und jeweils von der Basiswand zur Deckwand erstrecken, und
  • zwei offene Enden des Grundkörpers jeweils peripher dicht verschließende und die Enden der Kammern jeweils übergreifende Kappen, welche einen die Kammern verbindenden Freiraum bilden.
According to one embodiment of the invention, the container has the following features:
  • a longitudinally extending one-piece base body having a substantially planar cover and flat base wall, which are connected to likewise longitudinally extending side walls, and having at least one longitudinal, the base wall with the top wall connecting web for forming at least two adjacent and longitudinally extending chambers which extend over the entire length of the base body and in each case from the base wall to the top wall, and
  • two open ends of the base body each peripherally sealing and the ends of the chambers each cross caps which form a space connecting the chambers.

Nach einer besonderen Ausführungsform schließt zumindest eine der Kappen direkt stumpf an den Grundkörper an.According to a particular embodiment, at least one of the caps connects directly to the main body dull.

Nach einer Ausführungsform der Erfindung weist die Deck- und/oder Basiswand jeweils gegenüber einer planen Referenzdeck- und/oder Referenzbasiswand eine Aufwölbung mit einem mittig zwischen den Stegen jeweils zwischen der inneren Kontur der Deck- und/oder Basiswand und der planen Referenzdeck- und/oder Referenzbasiswand gemessenen Abstand von weniger als 25% , bevorzugt weniger als 20%, besonders bevorzugt weniger als 15% oder 10% der Breite der Kammer auf.According to one embodiment of the invention, the cover and / or base wall in each case with respect to a flat Referenzdeck- and / or reference base wall a bulge with a centrally between the webs each between the inner contour of the cover and / or base wall and the plan Referenzdeck- and / or reference base wall measured distance of less than 25%, preferably less than 20%, more preferably less than 15% or 10% of the width of the chamber.

Nach einer Ausführungsform der Erfindung sind/ist die Basis- und/oder die Deckwand im Wesentlichen eben ausgeführt.According to one embodiment of the invention, the base wall and / or the top wall are / is designed essentially flat.

Nach einer Ausführungsform der Erfindung weist die Basis- und/oder die Deckwand jeweils gegenüber einer planen Referenzdeck- und/oder Referenzbasiswand eine Aufwölbung mit einem mittig zwischen den Stegen jeweils zwischen der inneren Kontur der Deck- und/oder Basiswand und der planen Referenzdeck- und/oder Referenzbasiswand gemessenen Abstand von mehr als 3 %, insbesondere einen Abstand im Bereich zwischen 5% und 15 %, vorzugsweise zwischen 5% und 10%, der Breite der Kammer auf.According to one embodiment of the invention, the base and / or the top wall in each case with respect to a plan Referenzdeck- and / or reference base wall a bulge with a centrally between the webs each between the inner contour of the cover and / or base wall and the plan Referenzdeck- and / or reference base wall measured distance of more than 3%, in particular a distance in the range between 5% and 15%, preferably between 5% and 10%, of the width of the chamber.

Nach einer Ausführungsform der Erfindung übergreifen die Kappen jeweils die Enden der Kammern. Nach verschiedenen Ausführungsformen sind dabei entweder einzelne Kappen vorgesehen, die an einem Ende des Grundkörpers die Kammern des Grundkörpers getrennt verschließen oder eine Kappe die über mehrere Kammern übergreift und diese gemeinsam verschließt.According to one embodiment of the invention, the caps each overlap the ends of the chambers. According to various embodiments, either individual caps are provided which close the chambers of the base body separately at one end of the main body or a cap which engages over a plurality of chambers and closes them together.

Nach einer Ausführungsform der Erfindung bildet zumindest eine der Kappen einen die Kammern verbindenden Freiraum. Durch diesen Freiraum ist eine Kommunikation zwischen den Kammern des Grundkörpers möglich und es kann auf diese Weise zwischen den Kammern des Grundkörpers ein Gas- bzw. Flüssigkeitsaustausch bzw. -ausgleich erfolgen. Alternativ könnte dieser Gas- bzw. Flüssigkeitsaustausch über entsprechende Öffnungen in den Stegen im Bereich des Grundkörpers erfolgen.According to one embodiment of the invention, at least one of the caps forms a space connecting the chambers. Through this space communication between the chambers of the body is possible and it can be done in this way between the chambers of the body, a gas or liquid exchange or compensation. Alternatively, this gas or liquid exchange could take place via corresponding openings in the webs in the region of the main body.

Nach einer Ausführungsform der Erfindung ist zumindest eine der Kappen im Wesentlichen flach bzw. eben ausgebildet. Eine Herstellung einer solchen Kappe ist besonders einfach und kostengünstig zu realisieren. Nach einer weiteren Ausführungsform der Erfindung sind mehrere der Kappen im Wesentlichen eben ausgebildet und weist zumindest eine der Kappen eine nicht flache voluminöse Form auf, wobei diese Kappe für die Befüll- und/oder Entnahmeleitung und/oder für die Aufnahme der Sensorik, beispielsweise zur Bestimmung des Flüssigkeitsstandes in dem Innenbehälter, vorgesehen ist.According to one embodiment of the invention, at least one of the caps is substantially flat or flat. A production of such a cap is particularly simple and inexpensive to implement. According to a further embodiment of the invention, a plurality of the caps are substantially planar and has at least one of the caps on a non-flat voluminous shape, said cap for the filling and / or extraction line and / or for receiving the sensor, for example, for determination the liquid level in the inner container, is provided.

Nach einer Ausführungsform der Erfindung weist zumindest einer der Stege im Bereich der Befestigung zumindest einer der Kappen an der Basis- und/oder Deckwand einen Freischnitt auf. Nach einer bevorzugten Ausführungsform weisen alle Stege zumindest einen Freischnitt, insbesondere jeweils an jedem Ende, einen Freischnitt auf. Als Freischnitt wird dabei ein insbesondere eine Rückversetzung einer Kante verstanden. Durch den Freischnitt im Bereich der Befestigung, die nach dem Stand der Technik vorzugsweise durch thermische Verfahren, wie Schweiß- oder Lötverfahren hergestellt wird, wird bei der Herstellung der Befestigungsnaht, insbesondere der Schweiß- oder Lötnaht eine übermäßige Abfuhr von Wärme über den Steg verhindert. Auf diese Weise kann eine gleichmäige Befestigungsnaht zwischen der Kappe und dem Grundkörper gewährleistet werden. Nach einem weiteren Aspekt können die Freischnitte zur besseren Kommunikation der Kammern des Grundkörpers beitragen, wobei durch die Freischnitte ein entsprechender Gas- bzw. Flüssigkeitsaustausch zwischen den Kammern des Innenbehälters erfolgen kann.According to one embodiment of the invention, at least one of the webs in the region of attachment of at least one of the caps on the base and / or top wall to a cut-free. According to a preferred embodiment, all webs have at least one free cut, in particular in each case at each end, a free cut. A free cut is understood to mean, in particular, a return of an edge. Due to the free cut in the region of the attachment, which is preferably produced in the prior art by thermal methods such as welding or soldering, excessive production of the fastening seam, in particular the welding or soldering seam heat over the web is prevented. In this way, a uniform attachment seam between the cap and the body can be ensured. According to a further aspect, the free cuts may contribute to the better communication of the chambers of the base body, wherein a corresponding gas or liquid exchange between the chambers of the inner container can be carried out by the free cuts.

Nach einer Ausführungsform der Erfindung ist zumindest eine der Kappen mit einer, vorzugsweise umlaufenden, Befestigungsnaht, insbesondere eine Schweissnaht, an dem Grundkörper befestigt, und weisen die Stege jeweils im Bereich der, vorzugsweise umlaufenden, Befestigungsnaht, insbesondere eine Schweissnaht, einen Freischnitt auf.According to one embodiment of the invention, at least one of the caps with a, preferably circumferential, attachment seam, in particular a weld, attached to the body, and the webs in each case in the region of, preferably circumferential, fastening seam, in particular a weld, a free cut.

Nach einer Ausführungsform der Erfindung weist zumindest eine der Kappen eine Anzahl von Ausnehmungen auf, in welche das in Längsrichtung des Grundkörpers ausgerichtete freie Ende zumindest eines der Stege hineinragt. Nach dieser Ausführungsform kann die Stabilität des Innenbehälters und/oder der den Grundkörper verschließenden Kappe(n) wesentlich gesteigert werden.According to one embodiment of the invention, at least one of the caps has a number of recesses into which projects the aligned in the longitudinal direction of the main body free end of at least one of the webs. According to this embodiment, the stability of the inner container and / or of the base cap closing cap (s) can be significantly increased.

Nach einer Ausführungsform der Erfindung ist der Steg im Bereich der Ausnehmung der Kappe über eine Schweißnaht an der Kappe befestigt.According to one embodiment of the invention, the web is secured in the region of the recess of the cap via a weld on the cap.

Eine hinsichtlich der Festigkeit bevorzugte und herstellungsmäßig günstige Ausführungsform ist dadurch gekennzeichnet, dass der Steg etwa senkrecht zur Basis- und zur parallel zu ihr verlaufenden Deckwand des Grundkörpers ausgerichtet ist.A preferred in terms of strength and moderately favorable production embodiment is characterized in that the web is aligned approximately perpendicular to the base and parallel to its extending top wall of the body.

Vorzugsweise weist der Innenbehälter ein Profil quer zur Längserstreckung in Form eines Rechteckes auf, wobei zur einfachen Herstellung der Kappen die die Seitenwände mit der Basiswand und der Deckwand verbindende Längskanten gerundet ausgebildet sind.Preferably, the inner container has a profile transversely to the longitudinal extent in the form of a rectangle, wherein for easy production of the caps, the longitudinal edges connecting the side walls with the base wall and the top wall are rounded.

Eine besonders günstige Herstellungsweise des Grundkörpers ist gegeben, wenn er als einteiliges Strangpressprofil ausgebildet ist, wobei vorzugsweise die Wandstärken aller Wände etwa gleich groß sind oder die Wandstärke eines Steges geringer ist als die der Basis-, Deck- und Seitenwände.A particularly favorable method of manufacturing the main body is given if it is designed as a one-piece extruded profile, wherein preferably the wall thicknesses of all walls are approximately equal or the wall thickness of a web is less than that of the base, cover and side walls.

Eine besonders günstige Herstellungsweise des Grundkörpers ist gegeben, wenn die Wandstärken aller Wände etwa gleich groß sind oder die Wandstärke eines Steges geringer ist als die der Basis-, Deck- und Seitenwände.A particularly favorable method of manufacturing the body is given when the wall thicknesses of all walls are about the same size or the wall thickness of a web is less than that of the base, cover and side walls.

Zur Vermeidung von Spannungsspitzen ist der Innenbehälter dadurch gekennzeichnet, dass die Übergänge zwischen Steg und Basis- bzw. Deckwand mit einer Krümmung, insbesondere einem Radius gerundet, ausgebildet sind, der größer oder gleich ist der Wandstärke des Steges oder der Wandstärke der Basis- oder Deckwand. Nach einer weiteren Ausführungsform weisen die Übergänge mehrere Radien bzw. zumindest Anteile einer Freiformkurve auf.To avoid voltage peaks, the inner container is characterized in that the transitions between the web and the base or top wall are rounded with a curvature, in particular a radius, which is greater than or equal to the wall thickness of the web or the wall thickness of the base or top wall , According to a further embodiment, the transitions have a plurality of radii or at least parts of a free-form curve.

Infolge der konstruktiv erzielbaren hohen Festigkeit ist es möglich, den Grundkörper und die Kappen aus Leichtmetall, insbesondere aus einer Aluminiumlegierung, zu bilden.As a result of the structurally achievable high strength, it is possible to form the base body and the caps made of light metal, in particular of an aluminum alloy.

Vorzugsweise sind die Kappen tiefgezogen, geschmiedet oder gegossen, insbesondere mit einem Druckgussverfahren gegossen, wobei zweckmäßig die Kappen mit dem Grundkörper mittels einer umlaufenden Schweißnaht verbunden sind.Preferably, the caps are deep-drawn, forged or cast, in particular cast with a die-casting process, wherein expediently the caps are connected to the main body by means of a circumferential weld.

Vorzugsweise sind die Kappen mit dem Grundkörper mittels einer umlaufenden Schweißnaht verbunden.Preferably, the caps are connected to the base body by means of a circumferential weld.

Zweckmäßig sind zur Verbindung der Kappen mit dem Grundkörper die aneinander liegenden Kanten einer Vorbehandlung unterzogen, vorzugsweise ist mindestens eine der Kanten zur Bildung einer Überlappung der Bauteile mit einem Falz versehen. Ein solcher Falz ist insbesondere für die Anwendung von Schmelzschweissverfahren von Vorteil.Suitably, the abutting edges are subjected to a pretreatment for connecting the caps with the base body, preferably at least one of the edges is provided with a fold to form an overlap of the components. Such a fold is particularly advantageous for the use of fusion welding.

Als Schweißverfahren für die Herstellung der Schweißnaht hat sich das Reibrührschweißen besonders bewährt. Weiters kann auch das sogenannte multiorbitale Reibschweißen ("Rotary Friction Welding" oder "Linear Friction Welding") bzw. das sogenannte "Friction Stir Welding" zur Herstellung einer Schweissnaht verwendet werden.As a welding process for the production of the weld, the friction stir welding has proven particularly useful. Furthermore, the so-called multi-orbital friction welding ("Rotary Friction Welding" or "Linear Friction Welding") or the so-called "Friction Stir Welding" can be used to produce a weld.

Gemäß einer bevorzugten Ausführungsform sind allfällige Tankeinbauten, wie Sensoren für Druck und/oder Temperatur und/oder Füllstand und die dafür notwendigen Leitungen im Inneren einer Kappe vorgesehen und gegebenenfalls in einen Rohrstutzen einer Kappe integriert.According to a preferred embodiment, any tank internals, such as sensors for pressure and / or temperature and / or level and the necessary lines are provided inside a cap and optionally integrated into a pipe socket of a cap.

Vorzugsweise ist/sind eine Befüll- und/oder eine Entnahmeöffnung in einer der Kappen vorgesehen.Preferably, a filling and / or a removal opening is / are provided in one of the caps.

Zur Sicherung der Lage des Innenbehälters im Außenbehälter sind vorzugsweise an den Kappen Lagerelemente angeordnet, die den Innenbehälter an den Außenbehälter lagern.To secure the position of the inner container in the outer container bearing elements are preferably arranged on the caps, which store the inner container to the outer container.

Vorzugsweise ist ein Lagerungselement als Lagerbuchse, vorzugsweise aus einer Aluminiumlegierung und zweckmäßig in einer örtlichen Einbuchtung der Kappe vorgesehen, ausgebildet, in die ein Kunststoffteil, vorzugsweise ein Faserverbundbauteil, einsetzbar ist, welcher Kunststoffteil in eine an dem Außenbehälter vorgesehene Lagerbuchse ragt.Preferably, a bearing element is designed as a bearing bush, preferably made of an aluminum alloy and expediently provided in a local indentation of the cap, into which a plastic part, preferably a fiber composite component, can be inserted, which plastic part projects into a bearing bush provided on the outer container.

Weiters können zur Lagesicherung des Innenbehälters gegenüber dem Außenbehälter zusätzlich noch Distanzhalter an den Kappen befestigt oder mit den Kappen integral ausgebildet sein.Furthermore, in order to secure the position of the inner container relative to the outer container, spacers may additionally be fastened to the caps or formed integrally with the caps.

Vorzugsweise ist eine weitere Sicherung der Lage des Innenbehälters gegeben, wenn an der Deckwand außenseitig des Innenbehälters eine Befüll- und Entnahmeleitung geführt ist.Preferably, a further assurance of the position of the inner container is given if a filling and removal line is guided on the top wall on the outside of the inner container.

Erfindungsgemäß ist ein von einem Außenbehälter umgebener, zur Aufnahme einer kryogenen Flüssigkeit, insbesondere eines Kraftstoffes, dienender Innenbehälter (3) in abgeflachter Bauweise, insbesondere Innentank für ein Straßenfahrzeug, vorgesehen, der durch die Kombination folgender Merkmale gekennzeichnet ist:

  • einen sich längs erstreckenden Grundkörper mit einer Deck- und einer Basiswand, die mit sich ebenfalls längs erstreckenden Seitenwänden verbunden sind, und mit mindestens einem längs verlaufenden, die Basiswand mit der Deckwand verbindenden im Wesentlichen geraden Steg zur Bildung von von zwei beidseitig des Steges angeordneten sich längs erstreckenden Kammern, die sich über die gesamte Länge des Grundkörpers und jeweils von der Basiswand zur Deckwand erstrecken, und
  • zumindest zwei Kappen, die die zwei offene Enden des Grundkörpers jeweils peripher dicht verschließen, und
  • wobei der Steg im Bereich der Befestigung zumindest einer der Kappen an der Basis- und/oder Deckwand einen Freischnitt aufweist.
According to the invention, an inner container (3) of flattened construction, in particular an inner tank for a road vehicle, surrounded by an outer container and intended for holding a cryogenic liquid, in particular a fuel, is provided, which is characterized by the combination of the following features:
  • a longitudinally extending main body having a cover and a base wall, which are connected to likewise longitudinally extending side walls, and having at least one longitudinal, the base wall with the top wall connecting substantially straight web to form two of both sides of the web arranged longitudinally extending chambers which extend over the entire length of the body and in each case from the base wall to the top wall, and
  • at least two caps which close the two open ends of the body in each case peripherally tight, and
  • wherein the web has a free cut in the region of the attachment of at least one of the caps on the base and / or top wall.

Nach einer Ausführungsform ist zumindest eine der Kappen mit einer, vorzugsweise umlaufenden, Befestigungsnaht, insbesondere eine Schweissnaht, an dem Grundkörper befestigt und weisen die Stege jeweils im Bereich der, vorzugsweise umlaufenden, Befestigungsnaht, insbesondere eine Schweissnaht, einen Freischnitt auf.According to one embodiment, at least one of the caps with a, preferably circumferential, attachment seam, in particular a weld, attached to the body and have the webs in each case in the region of, preferably circumferential, fastening seam, in particular a weld, a free cut.

Nach einer Ausführungsform weist zumindest eine der Kappen eine Anzahl von Ausnehmungen auf, in welche das in Längsrichtung des Grundkörpers ausgerichtete freie Ende zumindest eines der Stege hineinragt.According to one embodiment, at least one of the caps has a number of recesses, in which projects in the longitudinal direction of the main body aligned free end of at least one of the webs.

Nach einer Ausführungsform ist der Steg im Bereich der Ausnehmung der Kappe über eine Schweißnaht an der Kappe befestigt.According to one embodiment, the web is secured in the region of the recess of the cap via a weld on the cap.

Erfindungsgemäß ist ein von einem Außenbehälter umgebener, zur Aufnahme einer kryogenen Flüssigkeit, insbesondere eines Kraftstoffes, dienender Innenbehälter in abgeflachter Bauweise, insbesondere Innentank für ein Straßenfahrzeug, vorgesehen, der durch die Kombination folgender Merkmale gekennzeichnet ist:

  • einen sich längs erstreckenden Grundkörper mit einer Deck- und einer • Basiswand, die mit sich ebenfalls längs erstreckenden Seitenwänden verbunden sind, und mit mindestens einem längs verlaufenden, die Basiswand mit der Deckwand verbindenden im Wesentlichen geraden Steg zur Bildung von von zwei beidseitig des Steges angeordneten sich längs erstreckenden Kammern, die sich über die gesamte Länge des Grundkörpers und jeweils von der Basiswand zur Deckwand erstrecken, und
  • zumindest zwei Kappen, die die zwei offene Enden des Grundkörpers jeweils peripher dicht verschließen, und
  • wobei zumindest eine der Kappen im Wesentlichen flach ausgebildet ist.
According to the invention, an inner container of a flattened design, in particular an inner tank for a road vehicle, which is surrounded by an outer container and is used to hold a cryogenic liquid, in particular a fuel, is provided, which is characterized by the combination of the following features:
  • a longitudinally extending main body having a cover and a • base wall, which are connected to also longitudinally extending side walls, and having at least one longitudinal, the base wall with the top wall connecting substantially straight web to form two of both sides of the web arranged longitudinally extending chambers which extend over the entire length of the body and in each case from the base wall to the top wall, and
  • at least two caps which close the two open ends of the body in each case peripherally tight, and
  • wherein at least one of the caps is formed substantially flat.

Nach einer Ausführungsform weist der Steg im Bereich der Befestigung zumindest einer der Kappen an der Basis- und/oder Deckwand einen Freischnitt auf.According to one embodiment, the web has a cutout in the region of the attachment of at least one of the caps on the base and / or top wall.

Nach einer Ausführungsform ist zumindest eine der Kappen mit einer, vorzugsweise umlaufenden, Befestigungsnaht, insbesondere eine Schweissnaht, an dem Grundkörper befestigt und weist der Steg jeweils im Bereich der, vorzugsweise umlaufenden, Befestigungsnaht, insbesondere eine Schweissnaht, einen Freischnitt auf.According to one embodiment, at least one of the caps with a, preferably circumferential, attachment seam, in particular a weld, attached to the body and the web has in each case in the region of, preferably circumferential, fastening seam, in particular a weld, a cut-free.

Nach einer Ausführungsform weist zumindest eine der Kappen eine Anzahl von Ausnehmungen auf, in welche das in Längsrichtung des Grundkörpers ausgerichtete freie Ende des Steges hineinragt.According to one embodiment, at least one of the caps has a number of recesses into which projects the aligned in the longitudinal direction of the body free end of the web.

Nach einer Ausführungsform ist der Steg im Bereich der Ausnehmung der Kappe über eine Schweißnaht an der Kappe befestigt.According to one embodiment, the web is secured in the region of the recess of the cap via a weld on the cap.

Die Erfindung ist nachstehend anhand mehrerer in schematischen Zeichnungen dargestellten nicht einschränkenden Ausführungsbeispielen näher erläutert, wobei Fig.1 eine Seitenansicht und Fig.2 eine Stirnansicht eines Außenbehälters zeigt, in dem zur Aufnahme eines kryogenen Kraftstoffes ein Innenbehälter angeordnet ist. Fig.3 zeigt einen Schnitt durch den Außenbehälter gemäß der Linie III-III der Fig.1. Fig.4 stellt einen Schnitt gemäß der Linie IV-IV der Fig.3 dar. Fig.5 veranschaulicht eine Explosionsdarstellung des Innenbehälters, vor dessen Zusammensetzen und Fig.6 und Fig.7 zeigen unterschiedliche Ausbildungen einer Schweißnaht für den Innenbehälter. Eine Aufhängung des Innenbehälters an dem Außenbehälter ist im Detail in Fig.8 gezeigt. In den Fig. 9-11 ist eine weitere mögliche Ausführungsform gezeigt. Fig. 9 zeigt dabei einen Seitenansicht in Längsrichtung des seitlich offenen Innenbehälters, Fig. 10 eine axonometrische Ansicht des Grundkörpers. In Fig. 11 ist ein Schnitt durch und entlang eines der Stege sowie der Kappe des Innenbehälters veranschaulicht. Eine weitere Ausführungsform ist Gegenstand der Fig. 12-14, wobei Fig. 12 eine axonometrische Ansicht dieser Ausführungsform zeigt. In Fig. 13 ist eine Seitenansicht in Längsrichtung des seitlich offenen Innenbehälters dargestellt und in Fig. 14 eine vergrößerte Ansicht eines aus Fig. 13. Schließlich ist eine weitere Ausführungsform der Erfindung Gegenstand der Fig. 15, welche einen Teil des Innenbehälters in axonometrischer Ansicht veranschaulicht, wobei zur Verdeutlichung die Kappe und der Grundkörper in einer auseinander gezogen dargestellt sind.The invention is described below with reference to several non-limiting exemplary embodiments illustrated in schematic drawings, wherein Fig.1 a side view and Fig.2 shows an end view of an outer container in which an inner container is arranged for receiving a cryogenic fuel. Figure 3 shows a section through the outer container according to the line III-III of Fig.1. Figure 4 represents a section along the line IV-IV of Figure 3 represents. Figure 5 illustrates an exploded view of the inner container, before its assembly and Fig.6 and Fig.7 show different configurations of a weld for the inner container. A suspension of the inner container to the outer container is shown in detail in Figure 8 shown. In the Fig. 9-11 another possible embodiment is shown. Fig. 9 shows a side view in the longitudinal direction of the laterally open inner container, Fig. 10 an axonometric view of the body. In Fig. 11 is a section through and along one of the webs and the cap of the inner container illustrated. Another embodiment is the subject of Fig. 12-14 , in which Fig. 12 an axonometric view of this embodiment shows. In Fig. 13 is a side view in the longitudinal direction of the laterally open inner container shown and in Fig. 14 an enlarged view of one Fig. 13 , Finally, another embodiment of the invention is the subject of Fig. 15 which illustrates a part of the inner container in axonometric view, wherein for clarity, the cap and the main body are shown in an exploded view.

In einem flachen Außenbehälter 1, der bis auf seine Abrundungen 2 die Form eines flachen Quaders aufweist, ist ein ebenfalls als flacher Quader ausgebildeter Innenbehälter 3 eingesetzt, der zur Aufnahme einer kryogenen Flüssigkeit, insbesondere eines kryogenen Kraftstoffes, dient. Um eine hinreichende Isolierung zwischen dem Innenbehälter 3 und dem Außenbehälter 1 anordnen zu können, ist zwischen dem Innen- 3 und dem Außenbehälter 4 ein den Innenbehälter 3 zur Gänze umgebender Hohlraum vorgesehen.In a flat outer container 1, which has the shape of a flat parallelepiped except for its rounded portions 2, an inner container 3, also designed as a flat cuboid, is used, which serves to receive a cryogenic liquid, in particular a cryogenic fuel. In order to be able to arrange a sufficient insulation between the inner container 3 and the outer container 1, a cavity surrounding the inner container 3 is provided between the inner 3 and the outer container 4 completely.

Der Innenbehälter 3 ist von drei Teilen, die im Einzelnen in Fig.5 dargestellt sind, gebildet, und zwar von einem Grundkörper 4, der einstückig ausgebildet ist, eine ebene glattflächige Deck- und Basiswand 5, 6 aufweist, welche mit sich längs des Grundkörpers 4 erstreckenden Seitenwänden 7 über Abrundungen 8 verbunden sind. Zwischen den Seitenwänden 7 sind parallel zu diesen sich ebenfalls längs erstreckende Stege 9 vorgesehen, die ebenfalls die Deckwand 5 mit der Basiswand 6 verbinden und durch die sich längs erstreckende Kammern 10 gebildet sind, die sich über die gesamte Länge des Grundkörpers 4 erstrecken.The inner container 3 is of three parts, which in detail Figure 5 are formed, of a base body 4, which is integrally formed, a flat smooth-surfaced cover and base wall 5, 6, which are connected to each other along the base body 4 extending side walls 7 via rounded portions 8. Between the side walls 7 are also provided longitudinally extending webs 9 parallel to these, which also connect the top wall 5 with the base wall 6 and are formed by the longitudinally extending chambers 10 which extend over the entire length of the base body 4.

Der Grundkörper 4 ist vorzugsweise aus Leichtmetall, insbesondere einer Aluminiumlegierung, gebildet und wird zweckmäßig und kostengünstig im Strangpressverfahren hergestellt. Die Wandstärken sämtlicher Wände 5, 6, 7, 9, des Grundkörpers sind etwa gleich stark, wobei Übergänge zwischen einem Steg 9 und der Basis- 6 und der Deckwand 5 zur Vermeidung von Spannungsspitzen mit einem Radius gerundet ausgebildet sind, der zweckmäßig gleich oder größer ist als die Wandstärke des Steges 9 oder die Wandstärke der Basis- 6 oder Deckwand 5. Selbstverständlich ist es möglich, die Wandstärke eines Steges 9, sofern es die Festigkeit zulässt, geringer zu bemessen als die Wandstärke der Basis- 6, der Deck- 5 und der Seitenwände 7.The main body 4 is preferably made of light metal, in particular an aluminum alloy, and is advantageously and inexpensively produced by extrusion. The wall thicknesses of all the walls 5, 6, 7, 9, the base body are about equally strong, with transitions between a web 9 and the base 6 and the top wall 5 are formed rounded to avoid stress peaks with a radius of expedient equal or greater is the wall thickness of the web 9 or the wall thickness of the base 6 or top wall 5. Of course, it is possible, the wall thickness of a web 9, if it allows the strength to be smaller than the wall thickness of the base 6, the cover 5 and the side walls 7.

An die offenen Enden des Grundkörpers 4 ist jeweils eine Kappe 11 ansetzbar, die mit dem Grundkörper 4 dicht verbindbar ist, vorzugsweise über eine Schweißnaht 12. Diese Kappen 11 übergreifen die Enden aller Kammern 10 und bilden einen die Kammern 10 verbindenden Freiraum 10', sodass die Kammern 10 leitungsmäßig mit einem relativ großen Querschnitt miteinander in Verbindung sind. Die Kappen 11 werden entweder tiefgezogen, geschmiedet oder auch gegossen, vorzugsweise mit einem Druckgussverfahren.At the open ends of the base body 4 is in each case a cap 11 can be attached, which is tightly connected to the base body 4, preferably via a weld 12. These caps 11 overlap the ends of all chambers 10 and form a chamber 10 connecting the free space 10 ', so the chambers 10 are conductively connected to each other with a relatively large cross section. The caps 11 are either deep-drawn, forged or cast, preferably with a die-casting process.

Zur Verbindung der Kappen 11 mit dem Grundkörper 4 werden die aneinander zur Anlage gelangenden Kanten 13, 14 einer Vorbehandlung unterzogen, wobei zweckmäßige Varianten in Fig.6 und Fig.7 dargestellt sind. Es wird also in mindestens eine der Kanten 13, 14 zur Bildung einer Überlappung ein Falz 15 eingearbeitet. Als Schweißverfahren zum Verbinden der Kappen 11 mit dem Grundkörper 4 hat sich das Reibrührschweißen besonders bewährt. Zur Lagesicherung des Innenbehälters 3 im Außenbehälter 1 dienen Lagerungselemente 16, die an den Kappen 11 vorgesehen sind. Eine bevorzugte Variante ist in Fig. 8 dargestellt. Gemäß dieser ist an einer Einbuchtung 17 des Innenbehälters eine Lagerbuchse 18 vorgesehen, vorzugsweise ebenfalls aus einer Aluminiumlegierung. In diese ist ein Kunststoffkörper 19, vorzugsweise als Faserverbundkunststoffrohr mit Metallbeschichtung ausgebildet, einsetzbar. Dieser Kunststoffkörper 19 ragt in eine in einer Ausbuchtung 20 des Außentanks 1 ebenenfalls vorgesehene Lagerbuchse 21, vorzugsweise ebenfalls aus einer Aluminiumlegierung. Die Lagerbuchsen 18, 21 sind am Außenbehälter 1 und am Innenbehälter 3 angeklebt, angeschweißt oder mit diesen integral ausgebildet. Der Kunststoffkörper 19 kann mit den Lagerbuchsen 18, 21 verklebt oder verschraubt sein, beispielsweise mittels einer Überwurfmutter.To connect the caps 11 with the base body 4, the abutting edges 13, 14 are subjected to a pretreatment, with expedient variants in Fig.6 and Fig.7 are shown. Thus, in at least one of the edges 13, 14 a fold 15 is incorporated to form an overlap. As a welding method for connecting the caps 11 with the main body 4, the friction stir welding has proven particularly useful. For securing the position of the inner container 3 in the outer container 1 are storage elements 16, which are provided on the caps 11. A preferred variant is in Fig. 8 shown. According to this, a bearing bush 18 is provided on a recess 17 of the inner container, preferably also made of an aluminum alloy. In this, a plastic body 19, preferably designed as a fiber composite plastic pipe with metal coating can be used. This plastic body 19 projects into a bearing bushing 21 provided in a recess 20 of the outer tank 1, preferably likewise made of an aluminum alloy. The bushings 18, 21 are glued to the outer container 1 and the inner container 3, welded or integrally formed with these. The plastic body 19 may be glued or screwed to the bearing bushes 18, 21, for example by means of a union nut.

Eine weitere Lagesicherung des Innenbehälters 3 im Außenbehälter 1 kann durch an den Kappen 11 angeordnete (bzw. mit diesen integral ausgebildeten) Distanzhalter 22, die am Außenbehälter 1 anstehen, vorgesehen sein. Entnahme- und Befüllleitungen 23, die an der Außenseite der Deckwand 5 angeordnet sind, tragen ebenfalls zur Stabilisierung der Lage des Innenbehälters 3 im Außenbehälter 1 bei.A further securing position of the inner container 3 in the outer container 1 can be provided by spacers 22 arranged on the caps 11 (or integrally formed therewith) and resting against the outer container 1. Removal and filling lines 23, which are arranged on the outside of the top wall 5, also contribute to the stabilization of the position of the inner container 3 in the outer container 1 at.

Allfällige Tankeinbauten, wie Sensoren für Druck- und/oder Temperatur und/oder Füllstand sowie die dafür notwendigen Leitungen sowie eine Entnahme- bzw. Befüllleitung 23 sind im Inneren einer der Kappen 11 oder beider Kappen 11 vorgesehen, wobei allfällige nach außen führende Rohrstutzen in die Kappen 11 integriert sin.Any tank installations, such as sensors for pressure and / or temperature and / or level and the necessary lines and a removal or filling 23 are provided inside one of the caps 11 or both caps 11, wherein any outwardly leading pipe socket in the Caps 11 integrated sin.

Der hoch belastbare Grundkörper 4 ergibt im Zusammenhang mit den als gekrümmten Schalen ausgebildeten Kappen 11 einen allseitig gleich hoch belastbaren Druckbehälter. Der Grundkörper 4 kann in einer kurzen Fertigungszeit preiswert hergestellt werden, es ist lediglich notwendig, für unterschiedlich große Tanks diesen Grundkörper 4 in unterschiedlichen Längen vom Strangpressprofil abzutrennen.The high loadable base body 4 results in connection with the caps 11 formed as curved shells on all sides equally high pressure vessel. The base body 4 can be produced inexpensively in a short production time, it is only necessary to separate for different sized tanks this body 4 in different lengths from the extruded profile.

Die Anzahl der im Grundkörper 4 vorhandenen Kammern 10 kann selbstverständlich variiert werden und ist allenfalls abhängig vom gewünschten Innenvolumens des Innenbehälters 3.The number of existing in the base body 4 chambers 10 can of course be varied and is at best dependent on the desired inner volume of the inner container. 3

Die Herstellung des Innenbehälters 3 kann wesentlich schneller, prozesssicherer und auch billiger erfolgen als beispielsweise die Herstellung eines tonnenförmigen Innenbehälters. Es sind nur zwei Schweißnähte 12 erforderlich, nämlich die die Kappen 11 mit dem Grundkörper 4 verbindenden Schweißnähte 12.The production of the inner container 3 can be much faster, more reliable and cheaper than, for example, the production of a barrel-shaped inner container. There are only two welds 12 required, namely the caps 11 connecting the main body 4 welds 12th

In Fig. 9 ist eine weitere mögliche Ausführungsform eines erfindungsgemäßen Innenbehälters 24 dargestellt. Wie ersichtlich verbinden Stege 25 die Basis- 26 mit der Deckwand 27 des Grundkörpers 28 und bilden so in dem Grundkörper Kammern zur Speicherung eines Gases und/oder einer Flüssigkeit aus. Zwischen den Stegen 25 sind die Kammer 29 angeordnet. Wie ersichtlich weist der Grundkörper 28 der Fig. 9 im Wesentlichen eine ebene Basis- 26 und Deckwand 27 auf.In Fig. 9 another possible embodiment of an inner container 24 according to the invention is shown. As can be seen webs 25 connect the base 26 with the top wall 27 of the body 28 and thus form in the body chambers for storing a gas and / or a liquid. Between the webs 25, the chamber 29 are arranged. As can be seen, the main body 28 of the Fig. 9 essentially a planar base 26 and top wall 27 on.

Wie aus den Fig. 9-11 ersichtlich, weisen die Stege 25 im Bereich der Basis- 26 und der Deckwand 27 jeweils Freischnitte 30 auf. Diese Freischnitte 30 sind im Bereich des Kontaktes der Kappe 31 mit dem Grundkörper 28, insbesondere des Kontaktes der Kappe 31 mit der Basis- 26 und der Deckwand 27 des Grundkörpers vorgesehen. Erfolgt eine Verschweissung der Kappe 31 mit dem Grundkörper 28, wird so verhindert, dass bei dem Schweissvorgang übermäßig viel Schweisswärme über den Steg 25 von den Schweissstellen 32 abgeführt wird. Wie aus Fig. 11 ersichtlich schließt die Kappe stumpf, insbesondere als sogenannte Stumpfnaht, an den Grundkörper an. Eine solche Stumpfnaht kann beispielsweise durch Reibrührschweissen hergestellt werden. Auf diese Weise kann eine gleichmäßige Schweissnaht gewährleistet werden. Durch die Freistellung 30 können die Kammern 29 des Grundkörpers 28 mit einander kommunizieren. Auf diese Weise ist es beispielsweise möglich, dass eine, beispielsweise gewölbte, Kappe 31 vorgesehen wird, die nur eine einzige Kammer abschließt und nicht über mehrere Kammern 29 übergreift. In diesem Fall wird die Kappe 31 an der Basis- 26 und der Deckwand 27 sowie an den die Kammer 29 beidseitig begrenzenden Stegen 25, insbesondere durch eine Schweissung und/oder Lötung, befestigt. Nach einer anderen Ausführungsform ist es jedoch genauso möglich eine Kappe vorzusehen, die mehrere Kammern übergreift und beispielsweise an der Basis- 26, der Deckwand 27 und an den Seitenwänden des Grundkörpers 28 diesen dicht abschließt und so den Innenbehälter 24 seitlich begrenzt.Like from the Fig. 9-11 can be seen, the webs 25 in the region of the base 26 and the top wall 27 each free cuts 30. These free cuts 30 are provided in the region of contact of the cap 31 with the main body 28, in particular the contact of the cap 31 with the base 26 and the top wall 27 of the base body. If the cap 31 is welded to the main body 28, it prevents the welding heat from being dissipated excessively over the web 25 by the welding points 32 during the welding process. How out Fig. 11 it can be seen that the cap bluntly, in particular as a so-called butt weld, to the body. Such a butt weld can be produced for example by friction stir welding. In this way, a uniform weld can be ensured. By the release 30, the chambers 29 of the body 28 can communicate with each other. In this way it is possible, for example, that a, for example, arched, cap 31 is provided, which closes only a single chamber and does not overlap over a plurality of chambers 29. In this case, the cap 31 is attached to the base 26 and the top wall 27 as well as to the webs 25 bounding the chamber 29 on both sides, in particular by welding and / or soldering. According to another embodiment, however, it is equally possible to provide a cap which engages over a plurality of chambers and, for example on the base 26, the top wall 27 and on the side walls of the main body 28 closes this tight and so the inner container 24 laterally limited.

Eine weitere mögliche Ausführungsform nach den Fig. 12-14 unterscheidet sich von den bereits diskutierten Ausführungsformen darin, dass die Basis- 33 und die Deckwand 34 jeweils eine geringe Wölbung, insbesondere eine zumindest teilweise - von außen gesehen - konvexe Krümmung, aufweisen. Im Zuge von FEM-Berechnungen und Versuchen hat sich dabei herausgestellt, dass eine leichte Wölbung einerseits die Stabilität des Innenbehälters wesentlich verbessert, sowie andererseits eine effiziente Platzausnutzung sowie eine gute Isolierbarkeit des Innenbehälters gewährleistet. Für die Bestimmung der Wölbung wird dabei ausgehend von einer planen Referenzebene 35 jeweils im Bereich der Basis- 33 oder Deckwand 34 mittig (Mittellinie M) zwischen den Stegen 36 der Kammer 37 der Normalabstand D zwischen der Referenzebene 35 und der inneren Kontur der Basis- 33 oder Deckwand 34 gemessen.Another possible embodiment according to the Fig. 12-14 differs from the embodiments already discussed in that the base 33 and the top wall 34 each have a slight curvature, in particular at least partially - seen from the outside - convex curvature having. In the course of FEM calculations and experiments, it has been found that a slight curvature on the one hand significantly improves the stability of the inner container, and on the other hand ensures efficient use of space and a good insulating capacity of the inner container. For the determination of the curvature is starting from a plane reference plane 35 each in the region of the base 33 or top wall 34 in the middle (center line M) between the webs 36 of the chamber 37 of the Normal distance D between the reference plane 35 and the inner contour of the base 33 or top wall 34 measured.

In der vorliegenden Ausführungsform beträgt der Abstand D ca. 8% der Breite der Kammer B (im Bereich der Referenzebene gemessen). Die plane Referenzebene 35 ist jeweils als ebene Verbindungsebene der basis- oder deckwandseitigen geraden Enden der Stege 36 (ohne bzw. vor einer allenfalls vorgesehenen Rundung im Übergang zur Basis- oder Deckwand) bestimmt.In the present embodiment, the distance D is about 8% of the width of the chamber B (measured in the region of the reference plane). The flat reference plane 35 is in each case determined as a plane connecting plane of the base or top wall-side straight ends of the webs 36 (without or in front of a possibly provided rounding in the transition to the base or top wall).

Wie aus den Figuren ersichtlich sind auch in dieser Ausführungsform an den Stegen Freischnitte vorgesehen.As can be seen from the figures, free cuts are also provided in this embodiment on the webs.

Eine weitere Ausführungsform ist entsprechend Fig. 15 dargestellt. Dabei ist eine flache Kappe 38 vorgesehen, welche die Kammern 39 des Grundkörpers 40 abschliesst. Wie aus Fig. 15 ersichtlich, sind an den Stegen 41 im Bereich in welchem die Stege 41 an die Basis- und Deckwand angrenzen ebenfalls Freischnitte 42 vorgesehen. Wird die Kappe 38 entlang dem äußeren Rand 43 mit einer Schweiss- oder Lötnaht an dem Grundkörper 40 befestigt wird so eine gleichmäßige Schweiss- bzw. Lötnaht gewährleistet. Darüber hinaus kann über die Ausnehmungen bzw. Freischnitte 42 bei dem durch die Kappe 38 verschlossenen Grundkörper 40 ein Gas- und/oder Flüssigkeitsausgleich zwischen den Kammern 39 erfolgen. Wie aus Fig. 15 weiters ersichtlich weist die Kappe 38 längliche Ausnehmungen 43 auf. Die Abmessungen dieser länglichen Ausnehmungen entsprechen im Wesentlichen den Abmessungen der längsseitigen Enden 44 der Stege 41. Wird der Grundkörper 40 durch die Kappe 38 verschlossen ragen die längseitigen Enden 44 der Stege 41 in die entsprechenden Ausnehmungen 43 hinein. Nach einer bevorzugten Ausführungsform der Erfindung treten dabei die längsseitigen Enden 44 der Stege 41 durch die entsprechenden Ausnehmungen 43 der Kappe 38 und ragen an der den Kammern 39 abgewandten Seite der Kappe 38 aus dieser heraus. Nach einer besonderen Ausführungsform werden die längsseitigen Enden 44 der Stege 41 im Bereich der Ausnehmungen 43 mit der Kappe 38, beispielsweise durch eine gasdichte Schweissung oder Lötung befestigt. Durch diese zusätzlich Befestigung kann die Stabilität des Innenbehälters weiter verbessert und eine besonders kompakte Ausführung des Innenbehälters verwirklicht werden.Another embodiment is accordingly Fig. 15 shown. In this case, a flat cap 38 is provided, which closes the chambers 39 of the base body 40. How out Fig. 15 can be seen on the webs 41 in the area in which the webs 41 adjacent to the base and top wall also free cuts 42 are provided. If the cap 38 is attached to the base body 40 along the outer edge 43 with a welding or soldering seam, this ensures a uniform welding or soldering seam. In addition, a gas and / or liquid equalization between the chambers 39 can take place via the recesses or free cuts 42 in the base body 40 closed by the cap 38. How out Fig. 15 weiters seen, the cap 38 elongated recesses 43. The dimensions of these elongate recesses substantially correspond to the dimensions of the longitudinal ends 44 of the webs 41. If the main body 40 is closed by the cap 38, the longitudinal ends 44 of the webs 41 protrude into the corresponding recesses 43. According to a preferred embodiment of the invention, the longitudinal ends 44 of the webs 41 pass through the corresponding recesses 43 of the cap 38 and protrude out of the cap 38 on the side of the cap 38 facing away from the chambers 39. According to a particular embodiment, the longitudinal ends 44 of the webs 41 are secured in the region of the recesses 43 with the cap 38, for example by a gas-tight welding or soldering. By this additional attachment, the stability of the inner container can be further improved and a particularly compact design of the inner container can be realized.

Statt einer Schweissung oder Lötung kann auch eine Klebung, ein entsprechend geeignetes Verfahren dazu vorausgesetzt, verwendet werden.Instead of welding or soldering, a bond, provided a suitably suitable method for this purpose, can also be used.

Claims (15)

  1. Inner tank (3), of flat design, which is surrounded by an outer tank (1) and serves to hold a cryogenic liquid, in particular a fuel, in particular an inner tank for a road-going vehicle, characterized by the combination of the following features:
    • a longitudinally extending, single-piece basic body (4) having a top wall (5) and a base wall (6) which are connected by means of likewise longitudinally extending side walls (7), and having at least two longitudinally running, substantially straight webs (9) which connect the base wall (6) to the top wall (5) so as to form at least one longitudinally extending chamber (10) which is arranged between the webs and which extends over the entire length of the basic body (4) and in each case from the base wall (6) to the top wall (5), with the longitudinally extending chamber having a predetermined width between the webs, and
    • at least two caps (11) which sealingly close off the two open ends of the basic body (4) in each case at the periphery, and
    • with the top wall and/or base wall having, in each case with respect to a planar reference top wall and/or reference base wall, a bulge with a spacing, measured centrally between the webs, in each case between the inner contour of the top wall and/or base wall and the planar reference top wall and/or reference base wall, of less than 30% of the width of the chamber, and
    • in that mounting elements (18) are arranged on the caps (11), which mounting elements (18) mount the inner tank on the outer tank, and
    • in that a mounting element (18) is designed as a mounting sleeve, expediently in a local indentation (17) of the cap (11), into which mounting sleeve a synthetic part (19), can be inserted, which synthetic part (19) projects into a mounting sleeve (21) which is provided on the outer tank (1).
  2. Inner tank (3) according to Claim 1, characterized in that the base wall (6) and/or the top wall (5) are/is of substantially planar design.
  3. Inner tank (3) according to Claim 1 or 2, characterized in that the caps (11) engage over the ends of the chambers (10) in each case.
  4. Inner tank (3) according to one of Claims 1 to 3, characterized in that at least one of the caps (11) forms a free space (10') which connects the chambers (19).
  5. Inner tank (3) according to one of Claims 1 to 4, characterized in that at least one of the caps (11) is of substantially flat design.
  6. Inner tank (3) according to one of Claims 1 to 5, characterized in that at least one of the webs has a cutout (30) in the region of the fastening of at least one of the caps (31) to the base wall and/or top wall.
  7. Inner tank (3) according to one of Claims 1 to 6, characterized in that at least one of the caps is fastened by means of a preferably encircling fastening seam, in particular a weld seam, to the basic body, and the webs have a cutout (30) in each case in the region of the preferably encircling fastening seam, in particular weld seam.
  8. Inner tank (3) according to one of Claims 1 to 7, characterized in that at least one of the caps (38) has a number of recesses (43) into which the free end (44), which is aligned in the longitudinal direction of the basic body, of at least one of the webs (41) projects.
  9. Inner tank (3) according to Claim 8, characterized in that the web is fastened by means of a fastening seam, in particular a weld seam, to the cap (38) in the region of the recess (43) of the cap (38).
  10. Inner tank (3) according to one of Claims 1 to 9, characterized in that the basic body substantially has a profile, transversely with respect to the longitudinal extent, in the shape of a rectangle, with the longitudinal edges, which connect the side walls (7) to the base wall (6) and to the top wall (5), preferably being designed as rounded portions (8).
  11. Inner tank (3) according to one of Claims 1 to 10, characterized in that the basic body (4) is designed as a single-piece extruded profile.
  12. Inner tank (3) according to one of Claims 1 to 11, characterized in that the transitions between the web (9) and base wall (6) or top wall (5) are of rounded design with a radius which is greater than or equal to the wall thickness of the web (9) or the wall thickness of the base wall (6) or top wall (5).
  13. Inner tank (3) according to one of Claims 1 to 12, characterized in that the basic body (4) and the caps (11) are formed from light metal, in particular from an aluminum alloy.
  14. Inner tank (3) according to one of Claims 1 to 13, characterized in that the caps (11) are connected to the basic body (4) by means of an encircling weld seam (12).
  15. Inner tank (3) according to one of Claims 1 to 14, characterized in that any tank fittings, such as sensors for pressure and/or temperature and/or filling level and the associated lines (23), are provided in the interior of a cap (11), and are if appropriate integrated in a pipe stub of a cap (11).
EP07724475A 2006-04-21 2007-04-23 Inner container surrounded by an outer container, used for receiving a cryogenic liquid Not-in-force EP2010815B1 (en)

Applications Claiming Priority (2)

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DE102006018639A DE102006018639A1 (en) 2006-04-21 2006-04-21 Surrounded by an outer container and serving to receive a cryogenic liquid inner container
PCT/EP2007/003545 WO2007121969A1 (en) 2006-04-21 2007-04-23 Inner container surrounded by an outer container, used for receiving a cryogenic liquid

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EP2010815A1 EP2010815A1 (en) 2009-01-07
EP2010815B1 true EP2010815B1 (en) 2011-06-08

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EP (1) EP2010815B1 (en)
JP (1) JP5382448B2 (en)
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US8381928B2 (en) * 2004-06-04 2013-02-26 Ti Group Automotive Systems, L.L.C. Multilayer fuel tank with a seam having an overlay for reducing vapor permeation
NO20042702D0 (en) 2004-06-25 2004-06-25 Det Norske Veritas As Cellular tanks for storage of fluids at tow temperatures, and cell structure for use in a tank

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JP5382448B2 (en) 2014-01-08
US8235240B2 (en) 2012-08-07
EP2010815A1 (en) 2009-01-07
WO2007121969A1 (en) 2007-11-01
CA2650003C (en) 2015-08-11
CA2650003A1 (en) 2007-11-01
CN101479521A (en) 2009-07-08
ATE512333T1 (en) 2011-06-15
US20090145909A1 (en) 2009-06-11
JP2009534256A (en) 2009-09-24
DE102006018639A1 (en) 2007-10-31

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