EP1756331A1 - Recipient prevu pour contenir et stocker des liquides, ainsi que des substances visqueuses et procede de production correspondant - Google Patents

Recipient prevu pour contenir et stocker des liquides, ainsi que des substances visqueuses et procede de production correspondant

Info

Publication number
EP1756331A1
EP1756331A1 EP05740713A EP05740713A EP1756331A1 EP 1756331 A1 EP1756331 A1 EP 1756331A1 EP 05740713 A EP05740713 A EP 05740713A EP 05740713 A EP05740713 A EP 05740713A EP 1756331 A1 EP1756331 A1 EP 1756331A1
Authority
EP
European Patent Office
Prior art keywords
container
outside
jacket
stiffeners
integral stiffeners
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP05740713A
Other languages
German (de)
English (en)
Inventor
Andreas Plengorth
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.)
MT Aerospace AG
Original Assignee
MT Aerospace AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by MT Aerospace AG filed Critical MT Aerospace AG
Publication of EP1756331A1 publication Critical patent/EP1756331A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D90/00—Component parts, details or accessories for large containers
    • B65D90/02—Wall construction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D88/00—Large containers
    • B65D88/02—Large containers rigid
    • B65D88/06—Large containers rigid cylindrical
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F1/00—Etching metallic material by chemical means
    • C23F1/02—Local etching
    • C23F1/04—Chemical milling

Definitions

  • the present invention relates to a container for holding and storing liquids, such as viscous substances, in particular drinking and waste water or fuel, a method for the production thereof and the use thereof.
  • Such containers are generally known. According to the prior art, such containers are often used as metal tanks in the aerospace sector. Such containers are generally made of lightweight construction, have largely flat and smooth walls on the inside to facilitate cleaning, and are provided on the outside with stiffeners to withstand fluctuating differences between internal and external pressure. A number of measures are proposed in the prior art for increasing the buckling stiffness of such containers, but all of them have proven to be extremely disadvantageous in practice due to their structural design.
  • Stiffening of a container due to all-round beads in the wall has the disadvantage of a lack of a flat and smooth inner surface. A residue-free emptying of the container is hindered in this way. In addition, attachment details and desired wall reinforcements in the support area for improved force transmission cannot be realized. At higher internal pressures, the plastic deformation of the container is also favored compared to a container with a smooth wall.
  • stiffeners in the form of circumferential stiffening profiles are known, which are glued to or with the container. In this way, the pressure stability can be increase the container.
  • such bonding in turn poses numerous problems.
  • the surfaces of containers and stiffening profiles have to be pretreated extensively.
  • the problem arises during the bonding that the circumferentially rigid stiffening profiles are attached to the container in a bent manner and, if necessary, must be readjusted on site because of their springing back. After all, such an adhesive bond must be extremely durable, therefore have a lifespan of 25 years and more, and meet high mechanical requirements for strength and rigidity, even under adverse environmental conditions.
  • stiffeners using circumferential stiffening profiles which are connected to the container by spot welding, have also been used. In this way, the problems described above, which go hand in hand with gluing, are eliminated. The difficulties due to bending of the stiffening profiles during installation are also less pronounced. However, the stress concentrations occurring at the welding points have proven to be particularly disadvantageous. In addition, fine gaps and cracks around the welding points represent potential starting points for corrosion. Both lead to a reduction in strength and rigidity and a reduction in the life of the container as a whole.
  • the present invention is therefore based on the object of providing a container for holding and storing liquids and viscous substances, in particular drinking water and waste water or fuel, with which the above disadvantages can be prevented, which is therefore particularly simple in terms of construction, at the same time compact and stable as well is very lightweight, has a high strength and rigidity, is insensitive to high internal and external pressure, enables residue-free cleaning and emptying and is extremely inexpensive to manufacture, and to provide a process for its production and its use.
  • the container according to the invention Due to the design of the container according to the invention for receiving and storing liquids and viscous substances, in particular drinking and waste water or fuel, with a thin-walled jacket, the inside of the container being flat and smooth and the outside of the container integral with the outside protruding stiffeners is provided, a particularly simple, compact and stable design of the container of relatively low weight is achieved.
  • the container according to the invention has high strength and rigidity.
  • the container according to the invention is insensitive to high internal and external pressure. Accordingly, plastic deformations of the container are excluded under a specified maximum internal pressure.
  • the container according to the invention is quasi stiffened against dents. Furthermore, the container according to the invention enables residue-free cleaning and emptying. Finally, the manufacture of the container according to the invention is simple and less labor-intensive and is therefore extremely inexpensive. Further advantageous details of the container according to the invention are described in claims 1 to 11.
  • the integral stiffeners projecting beyond the outside are arranged in a region of the container in which the thin-walled jacket unites easily deformable hollow body forms.
  • the integral stiffeners are, in accordance with the features of claim 5, in the form of mutually parallel strips which are aligned axially and / or perpendicularly and / or at an angle or obliquely or diagonally to the longitudinal axis of the container on the outside of the jacket ,
  • the integral stiffeners are arranged on the outside of the jacket in accordance with the features of claims 6 to 8 in the form of a honeycomb, a lattice, in particular a triangle, a square, a rectangle, a polygon, or a polygon, or in a spiral. It is further provided according to the invention to arrange the integral stiffeners according to claim 9 continuously and / or interrupted on the outside of the jacket.
  • the container is lightweight and / or corrosion-resistant in accordance with the features of claim 10.
  • the container is expediently formed from metal, in particular from stainless steel, titanium or an alloy thereof.
  • Materials such as preferably stainless steel, titanium or an alloy thereof, meet the demand for minimizing the weight of the container on the one hand, and the demand for drinking water suitability and wastewater resistance, on the other hand.
  • this object is furthermore achieved in a surprisingly simple manner by the features of claim 12.
  • the jacket before or after its shaping or the container partially with an acid-resistant lacquer or the like is masked or coated and then completely immersed in an acid bath, as a result of which areas of the outside of the container which are not masked with the acid-resistant lacquer are chemically milled or (etched off) etched to form integral stiffeners projecting beyond the outside receive in a structurally particularly simple manner a container which has all of the advantageous properties shown above.
  • the container produced in this way is of lightweight construction with a cylindrical jacket and, for example, welded-on tank bottoms for equipped to store liquids and viscous substances.
  • the inside of the container is flat and smooth, which enables simple, quick and, above all, residue-free cleaning and emptying.
  • the outside of the container is also equipped with stiffeners, which give the, for reasons of weight, thin-walled jacket of the container the required stability.
  • stiffeners which give the, for reasons of weight, thin-walled jacket of the container the required stability.
  • these can be obtained in that chemical milling or (etching) etching as a result of acid-resistant masking does not remove, ie remain, areas which resemble the basic pattern in terms of parallel tire-like strips or barrel tires, honeycombs or the like.
  • the container produced in this way can withstand high pressure differences between inside and outside, despite its lightweight construction.
  • the container, which is manufactured according to the method according to the invention, is stiffened against dents and can withstand the highest pressure loads, which on the one hand are very fluctuating and on the other hand can occur with different signs, without any short-term and / or permanent deformation.
  • the jacket is cut from a plate-shaped profile, in particular from a metal sheet, before chemical milling or (etching) etching, according to the features of claim 13.
  • the measures of claim 14 are of particular interest for a versatile production of the container according to the invention, which is at the same time individually adapted to structural conditions. Accordingly, the cut of the Sheath before or after chemical milling or (ab-) etching to form a hollow body, in particular with a circular, oval, elliptical, prismatic, cylindrical, polygonal or a cross-section formed from it, preferably by edges, bending or rolling and then welding the mutually facing butt edges, deformed or deformed.
  • the jacket formed or deformed into a hollow body or the container can optionally be annealed stress-free before or after chemical milling or (etching) etching according to the measures of claim 15.
  • regions of the jacket before or after its shaping or of the container which are provided with welded seams, and regions adjacent thereto can also be used be provided with the acid-resistant lacquer or the like before chemical milling or (etching) etching, in such a way that these areas are not chemically milled or (at least to a limited extent) chemically milled or (etched off). Areas with weld seams or adjacent areas with the required wall thicknesses can thus be obtained by appropriate masking.
  • the areas of the sheath coated with the acid-resistant lacquer or the like are expediently cleaned by pickling before or after the shaping thereof or the container according to claim 18 after the chemical milling or (etching) etching. To this extent, the residual acid-resistant lacquer or the like remaining on the jacket and / or container is removed.
  • the container is passivated after chemical milling or (etching) etching or after pickling for corrosion protection and for long-term stabilization.
  • the container according to the invention for receiving and storing liquids and viscous substances, in particular drinking and waste water or fuel, in vehicles, in particular in land vehicles, such as, for example, a passenger car, truck or mobile home , in particular in watercraft, for example a submarine or hovercraft, or in particular in aircraft or aircraft of the aerospace industry.
  • Fig. 1 is a schematic plan view of an embodiment of a container designed according to the invention in a very simplified form
  • Fig. 2 is a partially broken cross-sectional view through a jacket of the embodiment of the container according to section II in Fig. 1, in an enlarged view.
  • the container 10 according to the invention can advantageously be used to hold and store liquids and viscous substances, in particular drinking and waste water or fuel, in vehicles, in particular in land vehicles, water vehicles or aircraft.
  • the container 10 according to the invention can be used in a passenger car, truck or mobile home or in a submarine or hovercraft.
  • the container according to the invention can be used to a very special extent for an aircraft in the aerospace industry.
  • FIGS. 1 and 2 The container 10 according to the invention shown in FIGS. 1 and 2 is shown for the sake of simplicity without attachment parts or attachment details, such as, for example, nozzles, bottles, necklines, support surfaces for claws, hand or man holes, etc.
  • the container 10 according to the invention which is shown in FIGS. 1 and 2, is formed from a thin-walled jacket 12, to each end of which a dome 14, a dome cap or the like element is attached, for example by means of welding.
  • the inside 16 of the container 10 is flat and smooth in accordance with FIGS. 1 and 2. In this way, a simple, quick and, above all, residue-free emptying and cleaning of the container 10 is made possible.
  • the outside 18 of the container 10 is integrally provided with stiffeners 20.
  • the integral stiffeners 20 on the outside 18 of the container 10 protrude beyond the outside 18.
  • the integral stiffeners 20, which protrude beyond the outer side 18 of the thin-walled part of the container 10, are arranged in a region of the container 10 in which the thin-walled jacket 12 forms an easily deformable hollow body.
  • the integral stiffeners are, strictly speaking, above the outside 22 of the jacket 12.
  • the container 10 of the invention shown in the exemplary embodiment according to FIGS. 1 and 2 has a circular or elliptical cross section. Therefore, the integral stiffeners 20 projecting beyond the outside 18 of the thin-walled part of the container 10 are arranged in a region of the container 10 in which the thin-walled jacket 12 forms an elongated, in particular, for example cylindrical, hollow body.
  • the integral stiffeners 20 in the illustrated embodiment of a container 10 according to the invention are arranged in the form of strips 24, such as strip-shaped elevations, tire-like strips or barrel strips etc., on the outside 22 of the jacket 12.
  • the strips 24 on the outside 22 of the jacket 12 run parallel to one another and are aligned axially and / or perpendicularly (not shown) and / or at an angle (likewise not shown) to the longitudinal axis 26 of the container 10. Since no attachment parts or attachment details are shown in the embodiment of the container 10 shown in FIGS. 1 and 2, the integral stiffeners 20, as shown, are arranged continuously on the outside 22 of the casing 12.
  • integral stiffeners 20 can also be interrupted at certain points, in particular at specially designed wall reinforcements or in the area of the aforementioned add-on parts or attachment details, such as sockets, flanges, etc., which are attached to the container 10 in a non-detachable manner ,
  • the container 10 is advantageously lightweight and / or corrosion-resistant.
  • the container 10, in particular the jacket 12 of the container 10, preferably consists of metal, such as stainless steel, titanium or an alloy thereof.
  • the container 10 shown according to the invention has areas with a greater wall thickness, which increase the overall stability of the container 10, facilitate welding with additional attachments or attachment details, such as sockets, flanges, etc., and as support points, such as the introduction of force into the wall of the container 10, improve.
  • the stiffened lightweight container behaves like a container with smooth and smooth inside and outside on both sides, without premature plastic deformation due to bulging.
  • the container 10 according to the invention is not prematurely irreversibly deformed under external pressure, for example due to differences in air pressure.
  • FIGS. 1 and 2 The manufacture of the embodiment of the container according to the invention shown in FIGS. 1 and 2 is explained in more detail below:
  • the container 10 For the production of the container 10 according to the invention cut a plate-shaped profile, for example from a sheet of metal, at least one jacket which initially has a thickness of the later thin-walled jacket plus the thickness of the stiffeners.
  • This blank is then folded into a desired prismatic, preferably cylindrical, shape, bent or rolled and welded over mutually facing butt edges.
  • This longitudinally welded prismatic jacket 12 can optionally be annealed without stress.
  • those areas that are not to be removed in an acid bath i.e. those of the later integral stiffeners 20, the inside 16 of the container 10 or jacket 12 and, if appropriate, also the weld seam provided on the outside 18 of the container 10 together with the surrounding area with acid-resistant Paint or the like masked or covered.
  • the cylindrical jacket 12 is completely immersed in and placed in the acid bath.
  • the unmasked areas on the outside 22 of the jacket 12 are chemically milled or (etched) down to the desired thickness of the container 10 and thus the integral stiffeners 20 are produced virtually simultaneously.
  • add-on parts or attachment details such as connecting pieces on the jacket 12 or flanges, are then welded to the jacket 12 (not shown).
  • Dome 14 or dome caps which were previously deep-drawn, are then also welded to the jacket 12 from both end sides. Finally, for reasons of corrosion protection and long-term stabilization, the container 10 as a whole is pickled and passivated.
  • the longitudinal seam can only be welded after chemical milling or (removal).
  • special care must be taken to ensure that the chemical milling or (etching) etching in the region of the abutting edges of the blank of the jacket 12 does not produce excessive changes in wall thickness.
  • the stress-free annealing and the chemical milling or (etching) etching can furthermore only take place after the dome 14 or dome caps and / or all the attachment parts or attachment details, such as connecting pieces, flanges etc., have been welded on.
  • chemical milling or (etching) etching also includes the pickling process, so that a correspondingly separate processing step can be omitted.
  • the slightly increased effort for masking or covering the add-on parts or add-on details has no serious effect.
  • the present invention is not limited to the illustrated embodiment of the container 10 and the associated method for its production.
  • the integral stiffeners 20 can also be formed and arranged on the outside 22 of the casing 12 in a honeycomb-shaped, lattice-shaped, in particular triangular, square, rectangular or polygonal, and otherwise polygonal or also spiral-shaped manner.
  • a combination of such differently shaped stiffeners 20 with one another is also possible in principle.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)

Abstract

L'invention concerne un récipient destiné à contenir et à stocker des liquides, ainsi que des substances visqueuses, notamment de l'eau potable et des eaux usées ou du carburant. Ledit récipient présente une enveloppe (12) à fine paroi, la face intérieure du récipient (10) étant plane et lisse et la face extérieure (18) dudit récipient (10) est munie intégralement d'éléments de renforcement (20) faisant saillie vers l'extérieur et situés sur la face extérieure (18). L'invention concerne également un procédé permettant de produire un récipient de ce type (10) et son utilisation.
EP05740713A 2004-05-11 2005-05-09 Recipient prevu pour contenir et stocker des liquides, ainsi que des substances visqueuses et procede de production correspondant Withdrawn EP1756331A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004023286A DE102004023286B4 (de) 2004-05-11 2004-05-11 Behälter zum Aufnehmen und Speichern von Flüssigkeiten sowie viskosen Stoffen, insbesondere von Trink- und Abwasser oder Kraftstoff, ein Verfahren zu dessen Herstellung und dessen Verwendung
PCT/EP2005/005007 WO2005111269A1 (fr) 2004-05-11 2005-05-09 Recipient prevu pour contenir et stocker des liquides, ainsi que des substances visqueuses et procede de production correspondant

Publications (1)

Publication Number Publication Date
EP1756331A1 true EP1756331A1 (fr) 2007-02-28

Family

ID=34967164

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05740713A Withdrawn EP1756331A1 (fr) 2004-05-11 2005-05-09 Recipient prevu pour contenir et stocker des liquides, ainsi que des substances visqueuses et procede de production correspondant

Country Status (4)

Country Link
US (1) US20070251947A1 (fr)
EP (1) EP1756331A1 (fr)
DE (1) DE102004023286B4 (fr)
WO (1) WO2005111269A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SG184485A1 (en) * 2010-10-22 2012-11-29 Daewoo Shipbuilding & Marine Storage container for liquefied natural gas
DE102013109460B4 (de) 2013-08-30 2016-11-03 Cotesa Gmbh Behälter aus Faserverbundwerkstoffen mit innenliegender Funktionsschicht und Verfahren zu dessen Herstellung
DE102013017445B4 (de) * 2013-10-22 2016-05-25 Stephan Fliß Container zur Lagerung von Flüssigkeiten
DE102014111779A1 (de) * 2014-08-18 2016-02-18 Iva Industrieöfen Gmbh Verfahren zur Herstellung einer Retorte für einen Nitrierofen sowie Retorte
US9676274B2 (en) * 2015-01-28 2017-06-13 Thermo King Corporation Fuel tank assembly
JP6409620B2 (ja) * 2015-03-02 2018-10-24 三菱電機株式会社 貯液タンク

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Publication number Priority date Publication date Assignee Title
US2739047A (en) * 1953-10-30 1956-03-20 North American Aviation Inc Process of chemically milling structural shapes and resultant article
GB1035122A (en) * 1964-02-27 1966-07-06 Young Res Lab Ltd Improvements in or relating to methods of etching
US3394841A (en) * 1966-12-19 1968-07-30 Standard Oil Co Underground liquid storage system
DE1684728A1 (de) * 1967-11-13 1971-04-15 Kurt Helger Huster Zylindrischer,ortsbeweglicher Druckfertigbehaelter aus armiertem Stahlbeton fuer fluessige und feste Fuellgueter
DE1911187A1 (de) * 1969-03-05 1970-09-17 Edmund Pietrowski Transport- und Lagerbehaelter mit konzentrisch angeordneten geschlossenen Sicken zur Erhoehung der Formsteifigkeit
IL54414A (en) * 1978-04-02 1982-07-30 Rotoplas Ltd Rotationally moulded containers
US4778075A (en) * 1986-06-06 1988-10-18 Owens-Corning Fiberglas Corporation Rib form for tank ribs
GB2203713A (en) * 1987-03-10 1988-10-26 Fischer Gmbh Removable or hinged component for covering openings in the fuselage of an aircraft
AT404484B (de) * 1996-11-05 1998-11-25 Winkler Harald Ing Abdeckung von schächten, unterirdischen bauwerken und öffnungen von behältnissen
DE19719071A1 (de) * 1997-05-06 1998-11-12 Kautex Textron Gmbh & Co Kg Sammeltank für Wasser sowie Verfahren zu dessen Herstellung
US6006419A (en) * 1998-09-01 1999-12-28 Millitech Corporation Synthetic resin transreflector and method of making same
DE10021117A1 (de) * 1999-05-04 2001-03-15 Mauser Werke Gmbh Großvolumiger industrieller Verpackungsbehälter
EP1155975A1 (fr) * 2000-05-17 2001-11-21 Roth Werke GmbH Conteneur

Non-Patent Citations (1)

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Title
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Also Published As

Publication number Publication date
DE102004023286B4 (de) 2009-01-29
WO2005111269A1 (fr) 2005-11-24
DE102004023286A1 (de) 2005-12-15
US20070251947A1 (en) 2007-11-01

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