EP2900574B1 - Container produced from a single-layered, helically bent sheet-metal strip - Google Patents

Container produced from a single-layered, helically bent sheet-metal strip Download PDF

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Publication number
EP2900574B1
EP2900574B1 EP13730115.6A EP13730115A EP2900574B1 EP 2900574 B1 EP2900574 B1 EP 2900574B1 EP 13730115 A EP13730115 A EP 13730115A EP 2900574 B1 EP2900574 B1 EP 2900574B1
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EP
European Patent Office
Prior art keywords
container
edge
metal strip
section
sheet
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.)
Active
Application number
EP13730115.6A
Other languages
German (de)
French (fr)
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EP2900574A1 (en
Inventor
Xaver Lipp
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Individual
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Individual
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Filing date
Publication date
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Publication of EP2900574A1 publication Critical patent/EP2900574A1/en
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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
    • B65D7/00—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal
    • B65D7/02—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by shape
    • B65D7/04—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by shape of curved cross-section, e.g. cans of circular or elliptical cross-section
    • 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
    • B65D88/08—Large containers rigid cylindrical with a vertical axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/12—Making tubes or metal hoses with helically arranged seams
    • B21C37/122—Making tubes or metal hoses with helically arranged seams with welded or soldered seams
    • 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
    • B65D7/00—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal
    • B65D7/12—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by wall construction or by connections between walls
    • B65D7/34—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by wall construction or by connections between walls with permanent connections between walls
    • B65D7/38—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by wall construction or by connections between walls with permanent connections between walls formed by soldering, welding, or otherwise uniting opposed surfaces
    • 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
    • B65D7/00—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal
    • B65D7/42—Details of metal walls
    • B65D7/44—Reinforcing or strengthening parts or members
    • B65D7/46—Corrugations
    • 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
    • B65D90/029—Wound structures
    • 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
    • B65D90/08—Interconnections of wall parts; Sealing means therefor
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H7/00—Construction or assembling of bulk storage containers employing civil engineering techniques in situ or off the site
    • E04H7/02—Containers for fluids or gases; Supports therefor
    • E04H7/04—Containers for fluids or gases; Supports therefor mainly of metal
    • E04H7/06—Containers for fluids or gases; Supports therefor mainly of metal with vertical axis
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H7/00—Construction or assembling of bulk storage containers employing civil engineering techniques in situ or off the site
    • E04H7/22—Containers for fluent solids, e.g. silos, bunkers; Supports therefor
    • E04H7/24—Constructions, with or without perforated walls, depending on the use of specified materials
    • E04H7/30—Constructions, with or without perforated walls, depending on the use of specified materials mainly of metal

Definitions

  • the invention relates to a container made of a single-layer, helically bent metal strip.
  • the manufacture of such containers is for example from the EP 1 181 115 B1 known.
  • a coil with a diameter corresponding to the container diameter is formed from a sheet metal strip.
  • the mutually associated helical Blechbandr is bent and then connected to the outside of the container by means of a fold fluid-tight together.
  • the opposing longitudinal edges of the sheet metal strip are each U-shaped bent, and the associated U-shaped bent sheet metal strip edges are nested and then connected by folding firmly together.
  • a container made of a helically bent sheet-metal strip in which a first edge portion is bent to form a helically extending Ausbiegekante to the outside. Also, the second edge portion of the sheet metal strip is bent outwards and connected there by a fold with the first edge portion.
  • a flexible metal hose is known in which the folded edges of a metal strip are inserted into one another and thereby displaced against each other.
  • DE 27 22 227 C3 is a seam connection for connecting the edges of a sheet known, in particular a helically wound sheet metal strip.
  • AT 373 877 relates to a memory composed of annular shell elements, a bottom part and a lid memory.
  • the individual jacket elements are conically tapered or conically widen or taper in the upper edge region and conically taper or widen in the lower edge region, wherein between the annular jacket elements in the overlap region, a sealing ring is arranged and optionally the memory by means anchored in the bottom part and guided by recesses in the shell elements and in the cover tension cables or the like. is braced in the axial and vertical directions.
  • GB 628 765 relates to a flexible hose having a helical metal strip with which another strip of flexible material is stapled, which may be a textile material.
  • DE20009149U1 discloses a device for storing solids, liquids and / or gases.
  • the containers produced have sufficient tightness and media resistance.
  • a corresponding media-resistant material can be used for the material of the sheet metal strip and / or lying on the inside of the container FalzfuƟ be additionally sealed with a sealing strip.
  • the invention is based on the problem of providing a container which further increases the range of applications of such containers, in particular permanently reliably fulfilling the highest requirements for purity, media resistance and / or tightness.
  • the container is made of a single-layered and helically bent sheet metal strip, wherein a first, helically extending edge portion of the sheet metal strip is bent to form a helically extending Ausbiegekante to the outside of the container.
  • the second, likewise helically extending edge portion of the sheet metal strip overlaps on the inside of the container adjacent to the Ausbiegekante and extending from the Ausbiegekante in the direction of the second edge portion toward third portion of the sheet metal strip.
  • the second edge portion is fluid-tightly connected to the third portion of the sheet metal strip on the inside of the container.
  • a sealing means is introduced on the outside the container in a helically extending seam, which is formed between the bending edge of the first edge portion and the second edge portion, in particular between the bending edge of the first edge portion and a crank of the second edge portion.
  • the scalloped first edge portion may obliquely and in particular transversely, ie extend at right angles to the preferably vertical longitudinal axis of the container.
  • the extent of the bulged first edge portion may be more than five times the thickness of the sheet metal strip, in particular more than eight times, and preferably more than ten times.
  • the second edge portion is fluid-tightly connected directly to its helically extending end edge with the third portion of the sheet metal strip, in particular at the end-side end face of the sheet metal web.
  • the end edge of the second edge portion forms on the inside of the container an obliquely and in particular transversely to the preferably vertical longitudinal axis of the container extending paragraph, for example, by the end-side end face of the metal sheet.
  • the fluid-tight connection is made by a welded connection.
  • a welded joint formed by the second edge portion obliquely and in particular transversely to the vertical axis of the container extending paragraph is particularly advantageous because thereby the weld can be placed on this paragraph, and thereby a dripping of softened by welding or flowable material is prevented. This ensures a permanently fluid-tight and high-strength welded connection.
  • the distance of the fluid-tight connection, in particular a welded joint, from the bending edge more than twice the thickness of the sheet metal strip, in particular more than three times, and preferably more than five times. In one embodiment, the distance may be more than eight times or even ten times or more.
  • the second edge portion is bent into the interior of the container by a cranking relative to a fourth section of the sheet-metal strip adjoining the offset in the direction of the first edge section.
  • the mutually associated edge portions of the metal sheets can be brought into abutment with each other without or with reduced mechanical stresses.
  • With sufficient cranking results in a self-adjustment of the mutually associated edges of the metal sheets to each other, in particular, the above the fourth section arranged first edge portion, in particular the associated Ausbiegekante, supported on the disposed between the second edge portion and the fourth portion offset, whereby on the one hand the production further simplified and the stability is increased and on the other hand, a precisely fitting connection is ensured.
  • the second edge portion and / or the fourth portion may extend in the form of a jacket around the vertical axis of the container, in particular circular-cylindrical.
  • the offset caused by the offset radial offset of the second edge portion relative to the fourth portion of the sheet metal strip is less than 95% of the thickness of the sheet metal strip, in particular less than 90% and preferably less than 85%.
  • the two mutually associated edge portions are slightly elastically deformed during manufacture of the container and are characterized in biased contact with each other. This leads to a further stiffening of the container.
  • the offset of the second edge portion is arranged in the region or in the vertical direction at the level of the bending edge. This results in a helically extending seam on the outside of the container, which is formed between the deflection edge of the first edge portion and the second edge portion, in particular between the bending edge of the first edge portion and the crank of the second edge portion, and in which a sealant can be introduced. For example, at this point a silicone seam can be introduced, by means of which the connection point is also sealed from the outside.
  • a fifth section of the sheet metal strip adjoining the bending edge in the direction of the second edge section is bent toward the outside of the container by a further offset relative to a sixth section of the sheet metal strip adjoining the further offset in the direction of the second edge section.
  • the second edge section may be fluid-tightly connected to the fifth section delimited by the bending edge on the one hand and the further cranking on the other hand.
  • the sixth section of the sheet metal strip may coincide with the fourth section and even with the second edge section.
  • the further cranking can take place at a very acute angle of, for example, less than 30 Ā°, in particular less than 20 Ā°, and preferably less than 15 Ā°, whereby a negative influence of microstructural changes at the point of further cranking on the strength and rigidity of the container produced on is reduced.
  • the Fig. 1 shows a view of a container 10 of the invention, as it can be used for storing bulk materials from agriculture and forestry, such as grain, wood chips or biowaste, as well as for storing water, sewage or sewage sludge or for storing gas.
  • the container 10 is on its outer side and its inner side substantially cylindrical, in particular circular cylindrical, with a vertically oriented longitudinal axis 12th
  • the preparation of the container 10 is carried out using a helically bent sheet-metal strip 20 preferably directly at the site of the container 10.
  • the diameter 14 of the container 10 may be between 4 m and 20 m or more.
  • the height 16 of the container 10 may be between 2 m and 20 m or more.
  • the capacity of the container 10 may for example be between 15 m 3 and 8,000 m 3 .
  • the preferably homogeneous thickness 38 (FIG. Fig. 2 ) of the sheet metal strip 20 is between 2 mm and 8 mm, in the present case may in particular be more than 5 mm, preferably more than 6 mm and less than 12 mm, for example between 8 mm and 10 mm.
  • the width 18 of the sheet metal strip 20 may be between 20 cm and 100 cm, in particular between 30 cm and 80 cm and preferably between 40 cm and 60 cm; in the illustrated embodiment, the width 18 of the sheet metal strip 20 is about 50 cm.
  • the Fig. 2 shows in an enlarged view a section through the junction II of a first embodiment of the container 10 of Fig. 1 ,
  • the vertically lower, first edge portion 22 of the helically extending sheet metal web 20 is to form a helically extending Ausbiegekante 24 to the outside of the Container 10 bent out at right angles with respect to the longitudinal axis 12.
  • the radial projection of the first edge portion 22 is in the embodiment about six times the thickness 38 of the sheet metal strip 20, but can especially in containers 10 with diameters of more 8 m and in particular more than 10 m also more than eight times or more than ten times the Thickness 38 of the sheet metal strip 20 amount.
  • the first edge portion 22 opposite second edge portion 26 of the sheet metal strip 20 is also helically extending and overlaps on the inside of the container 10, a third portion 28 of the sheet metal strip 20 extending from the Ausbiegekante 24 in the direction of the above in the Fig. 2 illustrated section located second edge portion 26 of the sheet metal strip 20 extends toward.
  • the second edge portion 26 is fluid-tightly connected to the third portion 28 of the sheet-metal strip 20.
  • connection takes place in the embodiment by a welded joint 34.
  • the front end of the second edge portion 26 in particular the edge-side end face of the sheet metal strip 20, a paragraph 32, obliquely and in the embodiment transversely, ie perpendicular to the longitudinal axis 12 of the container 10 .
  • the front end of the second edge portion 26 may also be folded so that the front end surface of the second edge portion 26 with the preferably jacket-shaped extending third portion 28 includes an acute angle of less than 90 Ā°, so that the weld 34 are securely attached in this area can and in particular a drainage of softened by the welding material is reliably prevented.
  • the distance 36 between the fluid-tight connection, such as the welded joint 34, and the bending edge 24 is also structurally predetermined. This distance is in the exemplary embodiment about five times the thickness 38 of the sheet metal strip 20, but can also be more than eight times or even more than ten times.
  • the second edge portion 26 is by a crank 40 opposite to the crank 40 in the direction of the below in the Fig. 2 illustrated section located first edge portion 22 subsequent fourth section 42 of the sheet metal strip 20 into the interior of the container 10 is bent into it.
  • the metal strip 20 is bent in at least two places such that the non-bent parts run parallel to each other.
  • the second edge portion 26 and the fourth portion 42 of the sheet metal strip 20 parallel to each other.
  • These sections 26, 42 as well as the other sections of the sheet-metal strip 20 may in particular be substantially cylindrical and, above all, circular-cylindrical with respect to the longitudinal axis 12 of the container 10.
  • the conditional by the crank 40 radial offset 44 of the second edge portion 26 relative to the fourth portion 42 of the sheet metal strip 20 may basically be 100% or even more than 100% of the thickness 38 of the sheet metal strip 20. In this case, a gap may arise between the second edge portion 26 and the third portion 28 into which a connection means and / or a sealant may be introduced. In one embodiment, however, the radial offset 44 is less than 100% of the thickness 38 of the sheet metal strip 20, for example about 90%.
  • the second edge portion 26 and / or the third portion 28 are deflected resiliently and are with resilient bias to each other.
  • no gap between the second edge portion 26 and the third portion 28 must be covered by the connection, for example, the welded joint 34.
  • the crank 40 of the second edge section 26 is arranged in the region of the deflection edge 24.
  • the above-extending sheet metal web in the region of the crank 40 is supported on the sheet metal web extending below each.
  • a sealant 46 is introduced, for example, a silicone joint. This prevents, for example, moisture from entering the region between the second edge section 26 and the third section 28.
  • the Fig. 3 shows a section through the junction III of a second embodiment of the container 10 of Fig. 1 ,
  • the first edge portion 122 is folded to form a fold and then the free end is bent at an angle between 15 Ā° and 70 Ā°, in particular between 20 Ā° and 45 Ā° and in the embodiment of about 30 Ā° relative to the longitudinal axis 12 of the container 10.
  • the connecting means 46 is introduced in the area between the bent end portion of the first edge portion 122 and the fourth portion 42 . This arrangement improves the drainage behavior of, for example, rainwater striking the outer surface of the container 10.
  • the Fig. 4 shows a section through the junction IV of a third embodiment of the container 10 of Fig. 1 ,
  • One to the bending edge 24 in the direction of the second edge portion 26 adjacent fifth section 48 of the sheet metal strip 20 is bent by a further crank 50 against a subsequent to the second crank portion 50 in the direction of the second edge portion 26 sixth section 52 of the sheet metal strip 20 to the outside of the container 10 out.
  • the second edge section 26 is fluid-tightly connected to the fifth section 48, in the exemplary embodiment by the welded connection 34.
  • the angle 54 of the further crank 50 is less than 45 Ā°, in particular less than 30 Ā° and preferably less than 20 Ā°; in the embodiment, the angle 54 is about 10 Ā°.
  • the radial projection of the fifth portion 48 relative to the sixth portion 52 in the embodiment is slightly more than 100% of the thickness 38 of the sheet metal strip 20, so that the fifth portion 48 is in loose contact with the second edge portion 26.
  • the radial projection of the further offset 50 can also be 100% of the thickness 38 of the sheet-metal strip 20, or also, as described in connection with the crank 40 of the first and second embodiments, less than 95%, in particular less than 90%. and preferably less than 85%, so that a self-aligning and / or resiliently clamping installation of the fifth section 48 takes place at the second edge section 26.
  • the second edge portion 26 is aligned on the inside of the container 10 with the formed by the sixth portion 52 inner wall of the container 10. In the third embodiment, it is particularly not necessary, the second edge portion 26 against an adjacent portion of the sheet metal strip 20, for example, opposite the fourth section 42 of the first and second embodiments. Associated microstructural changes are thereby reliably avoided.
  • the Fig. 5 shows a section through the junction V of a fourth embodiment of the container 10 of Fig. 1
  • the Fig. 6 shows a perspective view from the outside to one in the region of the joint according to Fig. 5 cut container 10.
  • a fifth section 48 of the sheet-metal strip 20 adjoining the bending edge 24 in the direction of the second edge section 26 is connected to the outside of the container by a further offset 50 relative to a sixth section 52 of the sheet-metal strip 20 adjoining the further offset 50 in the direction of the second edge section 26 10 bent down.
  • the further crank 50 corresponds to the fifth section 48 of the third and fourth embodiment of the Fig. 4 and 5 the third distance of the first and second embodiments of the FIGS. 2 and 3
  • the second edge section 26 is fluid-tightly connected to the fifth section 48 on the inside of the container 10, in the exemplary embodiment by the welded connection 34.
  • the fluid-tight connection is arranged at the height of the crank 50, whereby the crank 50 undergoes additional mechanical stabilization.
  • the angle 54 of the further crank 50 is greater than in the third embodiment of the Fig. 4 In particular, the angle is more than 30 Ā°, in particular more than 35 Ā° and less than 70 Ā° and preferably more than 35 Ā° and less than 60 Ā°.
  • the length 56 of the further crank 50 is less than 400% of the thickness 38 of the sheet metal strip 20, in particular less than 400%, and preferably less than 300%. In the exemplary embodiment, the length 56 of the further crank 50 is more than 150% and less than 250% of the thickness 38 of the sheet metal strip 20th
  • the distance 36 of the further crank 50 of the Ausbiegekante 24 is in the embodiment more than twice and less than ten times the thickness 38 of the sheet metal strip 20, in particular more than three times and less than eight times, preferably more than four times and less than that sixfold.
  • the distance 36 of the further offset 50 from the deflection edge 24 is also more than 50% and / or less than 250% of the radial extent of the scalloped first edge portion 22, in particular more than 70% and / or less than 200% and preferably more than 80 % and / or less than 150%.
  • the radial projection of the fifth portion 48 relative to the sixth portion 52 in the embodiment is slightly more than 100% of the thickness 38 of the sheet metal strip 20, so that the fifth portion 48 is in loose contact with the second edge portion 26.
  • the radial projection of the further crank 50 may also be 100% of the thickness 38 of the sheet metal strip 20 or, as described in connection with the crank 40 of the first and second embodiments, less than 95%, in particular less than 90% and preferably less than 85%, so that a self-aligning and / or resiliently clamping installation of the fifth section 48 takes place at the second edge section 26.
  • the second edge portion 26 is aligned on the inside of the container 10 with the inner wall formed by the sixth portion 52 of the container 10.
  • the fourth embodiment of Fig. 5 is it In particular, it is not necessary to bend the second edge section 26 with respect to an adjacent section of the sheet-metal strip 20, in particular with respect to the sixth section 52.
  • connection between the second edge portion 26 and the fifth portion 48 is stabilized by further connection points 60.
  • the further connection points 60 can be produced, for example, by spot welding, wherein the contour 58 of the further connection point 60 can be designed, for example, substantially circular or oblong.
  • the further connection points 60 may be arranged equidistant in the circumferential direction around the container 10, for example at a distance which is more than five times and / or less than 20 times the thickness 38 of the sheet metal strip 20, in particular more than eight times and / or less than 30 times, and preferably more than twelvefold and / or less than 25 times.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Packages (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)
  • Bag Frames (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Description

Die Erfindung betrifft einen aus einem einlagigen, wendelfƶrmig gebogenen Blechband hergestellten BehƤlter.The invention relates to a container made of a single-layer, helically bent metal strip.

Das Herstellen derartiger BehƤlter ist beispielsweise aus der EP 1 181 115 B1 bekannt. Dabei wird aus einem Blechband eine Wendel mit einem dem BehƤlterdurchmesser entsprechenden Durchmesser geformt. Die einander zugeordneten wendelfƶrmigen BlechbandrƤnder werden ausgebogen und anschlieƟend auf der AuƟenseite des BehƤlters mittels eines Falzes fluiddicht miteinander verbunden. Hierzu werden die einander gegenĆ¼berliegenden LƤngsrƤnder des Blechbandes jeweils U-fƶrmig ausgebogen, und die einander zugeordneten U-fƶrmig ausgebogenen BlechbandrƤnder werden ineinandergelegt und anschlieƟend durch Falzen fest miteinander verbunden.The manufacture of such containers is for example from the EP 1 181 115 B1 known. In this case, a coil with a diameter corresponding to the container diameter is formed from a sheet metal strip. The mutually associated helical BlechbandrƤnder be bent and then connected to the outside of the container by means of a fold fluid-tight together. For this purpose, the opposing longitudinal edges of the sheet metal strip are each U-shaped bent, and the associated U-shaped bent sheet metal strip edges are nested and then connected by folding firmly together.

Durch dieses als Lipp-Doppelfalz-System bekannte Herstellverfahren ist eine schnelle und einfache Herstellung der BehƤlter mit variablem Durchmesser und variabler Hƶhe mƶglich. Durch die Verwendung transportabler Blechbiege- und Montagevorrichtungen kann der BehƤlter unmittelbar am gewĆ¼nschten Aufstellungsort hergestellt werden.By this known as Lipp double seam system manufacturing process, a fast and easy production of containers with variable diameter and variable height is possible. By using transportable plate bending and assembly devices, the container can be produced directly at the desired site.

Aus der DE 199 39 180 A1 ist ein aus einem wendelfƶrmig gebogenen Blechband hergestellter BehƤlter bekannt, bei dem ein erster Randabschnitt unter Ausbildung einer wendelfƶrmig verlaufenden Ausbiegekante zur AuƟenseite hin ausgebogen ist. Auch der zweite Randabschnitt des Blechbandes ist nach auƟen abgebogen und dort durch einen Falz mit dem ersten Randabschnitt verbunden.
Aus der US 3,682,203 A ist ein flexibler Metallschlauch bekannt, bei dem die gefalzten RƤnder eines Blechbandes ineinandergesteckt und dabei gegeneinander verschiebbar sind.
Aus der DE 27 22 227 C3 ist eine Falzverbindung zum Verbinden der RƤnder eines Blechs bekannt, insbesondere eines wendelfƶrmig gewickelten Blechbandes.From the DE 199 39 180 A1 a container made of a helically bent sheet-metal strip is known, in which a first edge portion is bent to form a helically extending Ausbiegekante to the outside. Also, the second edge portion of the sheet metal strip is bent outwards and connected there by a fold with the first edge portion.
From the US 3,682,203 A a flexible metal hose is known in which the folded edges of a metal strip are inserted into one another and thereby displaced against each other.
From the DE 27 22 227 C3 is a seam connection for connecting the edges of a sheet known, in particular a helically wound sheet metal strip.

AT 373 877 betrifft einen aus ringfƶrmigen Mantelelementen, einem Bodenteil und einem Deckel zusammengesetzten Speicher. Bei diesem Speicher ist vorgesehen, dass die einzelnen Mantelelemente sich konisch verjĆ¼ngend ausgefĆ¼hrt sind oder sich im oberen Randbereich konisch erweitern bzw. verjĆ¼ngen und im unteren Randbereich sich konisch verjĆ¼ngen bzw. erweitern, wobei zwischen den ringfƶrmigen Mantelelementen in deren Ɯberlappungsbereich ein Dichtring angeordnet ist und wobei gegebenenfalls der Speicher durch im Bodenteil verankerte und durch Ausnehmungen in den Mantelelementen und im Deckel gefĆ¼hrte Spannseile od.dgl. in axialer und vertikaler Richtung verspannt ist. GB 628 765 betrifft einen flexiblen Schlauch, der einen helixfƶrmigen Metallstreifen aufweist, mit dem ein weiterer Streifen aus einem flexiblem Material geklammert ist, das ein textiles Material sein kann. DE20009149U1 offenbart eine Einrichtung zum Aufbewahren von Feststoffen, FlĆ¼ssigkeiten und/oder Gasen. AT 373 877 relates to a memory composed of annular shell elements, a bottom part and a lid memory. In this memory, it is provided that the individual jacket elements are conically tapered or conically widen or taper in the upper edge region and conically taper or widen in the lower edge region, wherein between the annular jacket elements in the overlap region, a sealing ring is arranged and optionally the memory by means anchored in the bottom part and guided by recesses in the shell elements and in the cover tension cables or the like. is braced in the axial and vertical directions. GB 628 765 relates to a flexible hose having a helical metal strip with which another strip of flexible material is stapled, which may be a textile material. DE20009149U1 discloses a device for storing solids, liquids and / or gases.

FĆ¼r viele Anwendungen, wie beispielsweise SchĆ¼ttgĆ¼ter aus der Land- und Forstwirtschaft oder fĆ¼r Bioabfall weisen die hergestellten BehƤlter eine ausreichende Dichtheit und Medienresistenz auf. Soweit eine hƶhere Medienresistenz und/oder Dichtheit gewĆ¼nscht ist, kann fĆ¼r den Werkstoff des Blechbandes ein entsprechend medienresistentes Material verwendet werden und/oder der auf der BehƤlterinnenseite liegende FalzfuƟ mit einem Dichtungsstrang zusƤtzlich abgedichtet werden.For many applications, such as bulk materials from agriculture and forestry or biowaste, the containers produced have sufficient tightness and media resistance. As far as a higher media resistance and / or tightness is desired, a corresponding media-resistant material can be used for the material of the sheet metal strip and / or lying on the inside of the container FalzfuƟ be additionally sealed with a sealing strip.

Der Erfindung liegt das Problem zugrunde, einen BehƤlter bereitzustellen, der das Anwendungsspektrum derartiger BehƤlter weiter vergrĆ¶ĆŸert, insbesondere dauerhaft zuverlƤssig hƶchste Anforderungen an die Reinheit, Medienresistenz und/oder Dichtheit erfĆ¼llt.The invention is based on the problem of providing a container which further increases the range of applications of such containers, in particular permanently reliably fulfilling the highest requirements for purity, media resistance and / or tightness.

Das Problem ist durch den im Anspruch 1 bestimmten BehƤlter gelƶst. Besondere AusfĆ¼hrungsarten der Erfindung sind in den UnteransprĆ¼chen bestimmt.The problem is solved by the container defined in claim 1. Particular embodiments of the invention are defined in the subclaims.

In einer AusfĆ¼hrungsart der Erfindung ist der BehƤlter aus einem einlagigen und wendelfƶrmig gebogenen Blechband hergestellt, wobei ein erster, wendelfƶrmig verlaufender Randabschnitt des Blechbandes unter Ausbildung einer wendelfƶrmig verlaufenden Ausbiegekante zur AuƟenseite des BehƤlters hin ausgebogen ist. Der zweite, ebenfalls wendelfƶrmig verlaufende Randabschnitt des Blechbandes Ć¼berlappt auf der Innenseite des BehƤlters einen an die Ausbiegekante angrenzenden und sich von der Ausbiegekante in Richtung auf den zweiten Randabschnitt hin erstreckenden dritten Abschnitt des Blechbandes. Der zweite Randabschnitt ist mit dem dritten Abschnitt des Blechbandes auf der Innenseite des BehƤlters fluiddicht verbunden. Es ist vorgesehen, dass auf der AuƟenseite des BehƤlters in einer wendelfƶrmig verlaufenden Nahtstelle, die zwischen der Ausbiegekante des ersten Randabschnitts und dem zweiten Randabschnitt gebildet ist, insbesondere zwischen der Ausbiegekante des ersten Randabschnitts und einer Krƶpfung des zweiten Randabschnitts, ein Dichtmittel eingebracht ist.In one embodiment of the invention, the container is made of a single-layered and helically bent sheet metal strip, wherein a first, helically extending edge portion of the sheet metal strip is bent to form a helically extending Ausbiegekante to the outside of the container. The second, likewise helically extending edge portion of the sheet metal strip overlaps on the inside of the container adjacent to the Ausbiegekante and extending from the Ausbiegekante in the direction of the second edge portion toward third portion of the sheet metal strip. The second edge portion is fluid-tightly connected to the third portion of the sheet metal strip on the inside of the container. It is intended that on the outside the container in a helically extending seam, which is formed between the bending edge of the first edge portion and the second edge portion, in particular between the bending edge of the first edge portion and a crank of the second edge portion, a sealing means is introduced.

Durch eine mechanisch feste und unlƶsbare fluiddichte Verbindung auf der Innenseite des BehƤlters erfĆ¼llt ein solcher BehƤlter hƶchste Anforderungen nicht nur an die Dichtheit, sondern auch an die Keimfreiheit, und darĆ¼ber hinaus ist das Anwendungsspektrum derartiger BehƤlter weiter vergrĆ¶ĆŸert. Durch die fluiddichte Verbindung auf der Innenseite ist beispielsweise das Bilden von HohlrƤumen, in denen sich Keime bilden kƶnnen, zuverlƤssig verhindert ist. Durch die Verwendung verzinkter Blechbahnen oder von Blechbahnen aus Edelstahl kann auƟerdem eine hohe Medienresistenz gewƤhrleistet werden.By a mechanically strong and insoluble fluid-tight connection on the inside of the container such a container meets the highest demands not only on the tightness, but also on the sterility, and beyond the range of applications of such containers is further increased. By the fluid-tight connection on the inside, for example, the formation of cavities in which germs can form, is reliably prevented. The use of galvanized sheet metal or stainless steel sheets also guarantees high resistance to media.

Der ausgebogene erste Randabschnitt kann dabei schrƤg und insbesondere quer, d.h. rechtwinklig zur vorzugsweise vertikalen LƤngsachse des BehƤlters verlaufen. Die Ausdehnung des ausgebogenen ersten Randabschnitts kann mehr als das FĆ¼nffache der Dicke des Blechbandes betragen, insbesondere mehr als das Achtfache und vorzugsweise mehr als das Zehnfache. Durch den ausgebogenen ersten Randabschnitt ist die Mƶglichkeit gegeben, den BehƤlter durch auf dem Boden aufgestellte Biege- und Verbindungseinrichtungen herzustellen, mittels denen der BehƤlter kontinuierlich durch Drehen und gleichzeitiges Anheben der zur Wendel gebogenen Blechbahn gebildet wird. Der ausgebogene erste Randabschnitt erhƶht die mechanische StabilitƤt des BehƤlters, da er die RƤnder der Blechbahnen aussteift.The scalloped first edge portion may obliquely and in particular transversely, ie extend at right angles to the preferably vertical longitudinal axis of the container. The extent of the bulged first edge portion may be more than five times the thickness of the sheet metal strip, in particular more than eight times, and preferably more than ten times. By the curved first edge portion, the possibility is given to produce the container by erected on the ground bending and connecting means by which the container is formed continuously by rotating and simultaneously lifting the coil bent sheet metal track. The scalloped first edge portion increases the mechanical stability of the container, since it stiffen the edges of the sheet metal webs.

In einer AusfĆ¼hrungsart ist der zweite Randabschnitt unmittelbar an seiner wendelfƶrmig verlaufenden endseitigen Kante mit dem dritten Abschnitt des Blechbandes fluiddicht verbunden, insbesondere an der endseitigen StirnflƤche der Blechbahn. Dadurch ist der Ɯbergang des zweiten Randabschnitt zu dem dritten Abschnitt des Blechbandes auf der Innenseite des BehƤlters zuverlƤssig fluiddicht verschlossen.In one embodiment, the second edge portion is fluid-tightly connected directly to its helically extending end edge with the third portion of the sheet metal strip, in particular at the end-side end face of the sheet metal web. As a result, the transition of the second edge portion to the third portion of the sheet metal strip on the inside of the container is reliably closed fluid-tight.

In einer AusfĆ¼hrungsart bildet die endseitige Kante des zweiten Randabschnitts auf der Innenseite des BehƤlters einen schrƤg und insbesondere quer zur vorzugsweise vertikalen LƤngsachse des BehƤlters verlaufenden Absatz, beispielsweise durch die endseitige StirnflƤche der Blechbahn. Dadurch ergibt sich eine AuflageflƤche fĆ¼r ein Verbindungsmittel, wodurch der Herstellvorgang weiter vereinfacht ist und auƟerdem eine hohe Dichtheit der Verbindung gewƤhrleistet werden kann. Dies ist besonders vorteilhaft, wenn der BehƤlter an seinem vorgesehenen Standort hergestellt wird, weil auf einer solchen Baustelle in der Regel erschwerte Bedingungen fĆ¼r das Herstellen einer dichten Verbindung herrschen.In one embodiment, the end edge of the second edge portion forms on the inside of the container an obliquely and in particular transversely to the preferably vertical longitudinal axis of the container extending paragraph, for example, by the end-side end face of the metal sheet. This results in a support surface for a connecting means, whereby the manufacturing process is further simplified and also a high tightness of the connection can be ensured. This is particularly advantageous when the container is manufactured at its intended location, because prevail on such a construction site usually difficult conditions for establishing a tight connection.

In einer AusfĆ¼hrungsart ist die fluiddichte Verbindung durch eine SchweiƟverbindung hergestellt. Insbesondere im Falle einer solchen SchweiƟverbindung ist ein von dem zweiten Randabschnitt gebildeter schrƤg und insbesondere quer zur Vertikalachse des BehƤlters verlaufender Absatz besonders vorteilhaft, weil dadurch die SchweiƟnaht auf diesen Absatz aufgesetzt werden kann, und dadurch ein Abtropfen von durch das SchweiƟen erweichtem oder flieƟfƤhig gemachtem Material verhindert ist. Dadurch ist eine dauerhaft fluiddichte und hochfeste SchweiƟverbindung gewƤhrleistet.In one embodiment, the fluid-tight connection is made by a welded connection. In particular, in the case of such a welded joint formed by the second edge portion obliquely and in particular transversely to the vertical axis of the container extending paragraph is particularly advantageous because thereby the weld can be placed on this paragraph, and thereby a dripping of softened by welding or flowable material is prevented. This ensures a permanently fluid-tight and high-strength welded connection.

In einer AusfĆ¼hrungsart betrƤgt der Abstand der fluiddichten Verbindung, insbesondere einer SchweiƟverbindung, von der Ausbiegekante mehr als das Zweifache der Dicke des Blechbandes, insbesondere mehr als das Dreifache und vorzugsweise mehr als das FĆ¼nffache. In einer AusfĆ¼hrungsart kann der Abstand auch mehr als das Achtfache oder sogar das Zehnfache oder mehr betragen. Durch diesen Abstand ist die Dichtheit und mechanische StabilitƤt der Verbindungsstelle weiter erhƶht, insbesondere besteht nicht die Gefahr, dass durch GefĆ¼geverƤnderungen im Blechband, die durch das Ausbiegen hervorgerufen werden kƶnnen, die StabilitƤt der Verbindung, insbesondere einer SchweiƟverbindung, herabsetzt ist.In one embodiment, the distance of the fluid-tight connection, in particular a welded joint, from the bending edge more than twice the thickness of the sheet metal strip, in particular more than three times, and preferably more than five times. In one embodiment, the distance may be more than eight times or even ten times or more. By this distance, the tightness and mechanical stability of the joint is further increased, in particular there is no risk that structural changes in the metal strip, which can be caused by the bending, the stability of the connection, in particular a welded joint, is reduced.

In einer AusfĆ¼hrungsart ist der zweite Randabschnitt durch eine Krƶpfung gegenĆ¼ber einem an die Krƶpfung in Richtung auf den ersten Randabschnitt anschlieƟenden vierten Abschnitt des Blechbandes in das Innere des BehƤlters abgebogen. Dadurch kƶnnen die einander zugeordneten Randabschnitte der Blechbahnen ohne oder mit reduzierten mechanischen Spannungen aneinander in Anlage gebracht werden. Bei ausreichender Krƶpfung ergibt sich eine Selbstjustierung der einander zugeordneten RƤnder der Blechbahnen zueinander, insbesondere kann sich der oberhalb des vierten Abschnitts angeordnete erste Randabschnitt, insbesondere die zugehƶrige Ausbiegekante, an der zwischen dem zweiten Randabschnitt und dem vierten Abschnitt angeordneten Krƶpfung abstĆ¼tzen, wodurch einerseits die Herstellung weiter vereinfacht sowie die StabilitƤt erhƶht ist und andererseits eine passgenaue Verbindung gewƤhrleistet ist. Der zweite Randabschnitt und/oder der vierte Abschnitt kƶnnen mantelfƶrmig um die Vertikalachse des BehƤlters verlaufen, insbesondere kreiszylindrisch.In one embodiment, the second edge portion is bent into the interior of the container by a cranking relative to a fourth section of the sheet-metal strip adjoining the offset in the direction of the first edge section. As a result, the mutually associated edge portions of the metal sheets can be brought into abutment with each other without or with reduced mechanical stresses. With sufficient cranking results in a self-adjustment of the mutually associated edges of the metal sheets to each other, in particular, the above the fourth section arranged first edge portion, in particular the associated Ausbiegekante, supported on the disposed between the second edge portion and the fourth portion offset, whereby on the one hand the production further simplified and the stability is increased and on the other hand, a precisely fitting connection is ensured. The second edge portion and / or the fourth portion may extend in the form of a jacket around the vertical axis of the container, in particular circular-cylindrical.

In einer AusfĆ¼hrungsart betrƤgt der durch die Krƶpfung bedingte radiale Versatz des zweiten Randabschnitts gegenĆ¼ber dem vierten Abschnitt des Blechbandes weniger als 95 % der Dicke des Blechbandes, insbesondere weniger als 90 % und vorzugsweise weniger als 85 %. Dadurch werden beim Herstellen des BehƤlters die beiden einander zugeordneten Randabschnitte geringfĆ¼gig elastisch verformt und sind dadurch in vorgespannter Anlage aneinander. Dies fĆ¼hrt zu einer weiteren Aussteifung des BehƤlters.In one embodiment, the offset caused by the offset radial offset of the second edge portion relative to the fourth portion of the sheet metal strip is less than 95% of the thickness of the sheet metal strip, in particular less than 90% and preferably less than 85%. As a result, the two mutually associated edge portions are slightly elastically deformed during manufacture of the container and are characterized in biased contact with each other. This leads to a further stiffening of the container.

In einer AusfĆ¼hrungsart ist die Krƶpfung des zweiten Randabschnitts im Bereich oder in Vertikalrichtung auf der Hƶhe der Ausbiegekante angeordnet. Dadurch ergibt sich auf der AuƟenseite des BehƤlters eine wendelfƶrmig verlaufende Nahtstelle, die zwischen der Ausbiegekante des ersten Randabschnitts und dem zweiten Randabschnitt gebildet ist, insbesondere zwischen der Ausbiegekante des ersten Randabschnitts und der Krƶpfung des zweiten Randabschnitts, und in die ein Dichtmittel einbringbar ist. Beispielsweise kann an dieser Stelle eine Silikonnaht eingebracht sein, mittels welcher die Verbindungsstelle auch von auƟen abgedichtet ist.In one embodiment, the offset of the second edge portion is arranged in the region or in the vertical direction at the level of the bending edge. This results in a helically extending seam on the outside of the container, which is formed between the deflection edge of the first edge portion and the second edge portion, in particular between the bending edge of the first edge portion and the crank of the second edge portion, and in which a sealant can be introduced. For example, at this point a silicone seam can be introduced, by means of which the connection point is also sealed from the outside.

In einer AusfĆ¼hrungsart ist ein an die Ausbiegekante in Richtung auf den zweiten Randabschnitt angrenzender fĆ¼nfter Abschnitt des Blechbandes durch eine weitere Krƶpfung gegenĆ¼ber einem an die weitere Krƶpfung in Richtung auf den zweiten Randabschnitt anschlieƟenden sechsten Abschnitt des Blechbandes zur AuƟenseite des BehƤlters hin abgebogen. Der zweite Randabschnitt kann mit dem durch die Ausbiegekante einerseits und die weitere Krƶpfung andererseits begrenzten fĆ¼nften Abschnitt fluiddicht verbunden sein. Bei dieser AusfĆ¼hrungsart kann der zweite Randabschnitt ohne Ausbiegung auf der Innenseite des BehƤlters in Anlage an den fĆ¼nften Abschnitt gebracht werden. Der sechste Abschnitt des Blechbandes kann mit dem vierten Abschnitt zusammenfallen und sogar mit dem zweiten Randabschnitt. Die weitere Krƶpfung kann mit einem sehr spitzen Winkel von beispielsweise weniger als 30Ā°, insbesondere weniger als 20Ā° und vorzugsweise weniger als 15Ā° erfolgen, wodurch ein negativer Einfluss von GefĆ¼geverƤnderungen an der Stelle der weiteren Krƶpfung auf die Festigkeit und Steifheit des hergestellten BehƤlters weiter reduziert ist.In one embodiment, a fifth section of the sheet metal strip adjoining the bending edge in the direction of the second edge section is bent toward the outside of the container by a further offset relative to a sixth section of the sheet metal strip adjoining the further offset in the direction of the second edge section. The second edge section may be fluid-tightly connected to the fifth section delimited by the bending edge on the one hand and the further cranking on the other hand. In this embodiment, the second edge portion without deflection on the inside of the container in abutment with the fifth Be brought to the section. The sixth section of the sheet metal strip may coincide with the fourth section and even with the second edge section. The further cranking can take place at a very acute angle of, for example, less than 30 Ā°, in particular less than 20 Ā°, and preferably less than 15 Ā°, whereby a negative influence of microstructural changes at the point of further cranking on the strength and rigidity of the container produced on is reduced.

Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus den UnteransprĆ¼chen sowie der nachfolgenden Beschreibung, in der unter Bezugnahme auf die Zeichnungen mehrere AusfĆ¼hrungsbeispiele im einzelnen beschrieben sind.

Fig. 1
zeigt eine Seitenansicht eines erfindungsgemƤƟen BehƤlters,
Fig. 2
zeigt in vergrĆ¶ĆŸerter Darstellung einen Schnitt durch die Verbindungsstelle II eines ersten AusfĆ¼hrungsbeispiels des BehƤlters der Fig. 1,
Fig. 3
zeigt einen Schnitt durch ein zweites AusfĆ¼hrungsbeispiel der Erfindung,
Fig. 4
zeigt einen Schnitt durch ein drittes AusfĆ¼hrungsbeispiel der Erfindung,
Fig. 5
zeigt einen Schnitt durch ein viertes AusfĆ¼hrungsbeispiel der Erfindung, und
Fig. 6
zeigt eine perspektivische Ansicht auf die AuƟenseite des BehƤlters der Fig. 1 im Bereich der Verbindungsstelle.
Further advantages, features and details of the invention will become apparent from the dependent claims and the following description in which several embodiments are described in detail with reference to the drawings.
Fig. 1
shows a side view of a container according to the invention,
Fig. 2
shows in an enlarged view a section through the junction II of a first embodiment of the container of Fig. 1 .
Fig. 3
shows a section through a second embodiment of the invention,
Fig. 4
shows a section through a third embodiment of the invention,
Fig. 5
shows a section through a fourth embodiment of the invention, and
Fig. 6
shows a perspective view of the outside of the container of Fig. 1 in the area of the junction.

Die Fig. 1 zeigt eine Ansicht eines erfindungsgemƤƟen BehƤlters 10, wie er zum Aufbewahren von SchĆ¼ttgĆ¼tern aus der Land- und Forstwirtschaft, beispielsweise Getreide, Holzschnitzel oder Bioabfall, ebenso eingesetzt werden kann wie zum Speichern von Wasser, Abwasser oder KlƤrschlamm oder auch zum Speichern von Gas. Der BehƤlter 10 ist auf seiner AuƟenseite und seiner Innenseite im Wesentlichen zylindrisch, insbesondere kreiszylindrisch, mit einer vertikal ausgerichteten LƤngsachse 12.The Fig. 1 shows a view of a container 10 of the invention, as it can be used for storing bulk materials from agriculture and forestry, such as grain, wood chips or biowaste, as well as for storing water, sewage or sewage sludge or for storing gas. The container 10 is on its outer side and its inner side substantially cylindrical, in particular circular cylindrical, with a vertically oriented longitudinal axis 12th

Die Herstellung des BehƤlters 10 erfolgt unter Verwendung eines wendelfƶrmig gebogenen Blechbandes 20 vorzugsweise unmittelbar am Aufstellungsort des BehƤlters 10. Der Durchmesser 14 des BehƤlters 10 kann zwischen 4 m und 20 m oder mehr betragen. Die Hƶhe 16 des BehƤlters 10 kann zwischen 2 m und 20 m oder mehr betragen. Das Fassungsvolumen des BehƤlters 10 kann beispielsweise zwischen 15 m3 und 8.000 m3 betragen. Die vorzugsweise homogene Dicke 38 (Fig. 2) des Blechbandes 20 betrƤgt zwischen 2 mm und 8 mm, kann im vorliegenden Fall insbesondere mehr als 5 mm, vorzugsweise mehr als 6 mm und weniger als 12 mm betragen, beispielsweise zwischen 8 mm und 10 mm. Die Breite 18 des Blechbandes 20 kann zwischen 20 cm und 100 cm betragen, insbesondere zwischen 30 cm und 80 cm und vorzugsweise zwischen 40 cm und 60 cm; im dargestellten AusfĆ¼hrungsbeispiel betrƤgt die Breite 18 des Blechbandes 20 etwa 50 cm.The preparation of the container 10 is carried out using a helically bent sheet-metal strip 20 preferably directly at the site of the container 10. The diameter 14 of the container 10 may be between 4 m and 20 m or more. The height 16 of the container 10 may be between 2 m and 20 m or more. The capacity of the container 10 may for example be between 15 m 3 and 8,000 m 3 . The preferably homogeneous thickness 38 (FIG. Fig. 2 ) of the sheet metal strip 20 is between 2 mm and 8 mm, in the present case may in particular be more than 5 mm, preferably more than 6 mm and less than 12 mm, for example between 8 mm and 10 mm. The width 18 of the sheet metal strip 20 may be between 20 cm and 100 cm, in particular between 30 cm and 80 cm and preferably between 40 cm and 60 cm; in the illustrated embodiment, the width 18 of the sheet metal strip 20 is about 50 cm.

Die Fig. 2 zeigt in vergrĆ¶ĆŸerter Darstellung einen Schnitt durch die Verbindungsstelle II eines ersten AusfĆ¼hrungsbeispiels des BehƤlters 10 der Fig. 1. Der in Vertikalrichtung untere, erste Randabschnitt 22 der wendelfƶrmig verlaufenden Blechbahn 20 ist unter Ausbildung einer ebenfalls wendelfƶrmig verlaufenden Ausbiegekante 24 zur AuƟenseite des BehƤlters 10 hin rechtwinklig in Bezug auf die LƤngsachse 12 ausgebogen. Der radiale Ɯberstand des ersten Randabschnitts 22 betrƤgt im AusfĆ¼hrungsbeispiel etwa das Sechsfache der Dicke 38 des Blechbandes 20, kann aber insbesondere bei BehƤltern 10 mit Durchmessern von mehr 8 m und insbesondere mehr als 10 m auch das mehr als das Achtfache oder mehr als das Zehnfache der Dicke 38 des Blechbandes 20 betragen.The Fig. 2 shows in an enlarged view a section through the junction II of a first embodiment of the container 10 of Fig. 1 , The vertically lower, first edge portion 22 of the helically extending sheet metal web 20 is to form a helically extending Ausbiegekante 24 to the outside of the Container 10 bent out at right angles with respect to the longitudinal axis 12. The radial projection of the first edge portion 22 is in the embodiment about six times the thickness 38 of the sheet metal strip 20, but can especially in containers 10 with diameters of more 8 m and in particular more than 10 m also more than eight times or more than ten times the Thickness 38 of the sheet metal strip 20 amount.

Der dem ersten Randabschnitt 22 gegenĆ¼berliegende zweite Randabschnitt 26 des Blechbandes 20 ist ebenfalls wendelfƶrmig verlaufend und Ć¼berlappt auf der Innenseite des BehƤlters 10 einen dritten Abschnitt 28 des Blechbandes 20, der sich von der Ausbiegekante 24 in Richtung auf den oberhalb des in der Fig. 2 dargestellten Ausschnitts befindlichen zweiten Randabschnitt 26 des Blechbandes 20 hin erstreckt. Auf der Innenseite des BehƤlters 10 ist der zweite Randabschnitt 26 mit dem dritten Abschnitt 28 des Blechbandes 20 fluiddicht verbunden.The first edge portion 22 opposite second edge portion 26 of the sheet metal strip 20 is also helically extending and overlaps on the inside of the container 10, a third portion 28 of the sheet metal strip 20 extending from the Ausbiegekante 24 in the direction of the above in the Fig. 2 illustrated section located second edge portion 26 of the sheet metal strip 20 extends toward. On the inside of the container 10, the second edge portion 26 is fluid-tightly connected to the third portion 28 of the sheet-metal strip 20.

Die Verbindung erfolgt im AusfĆ¼hrungsbeispiel durch eine SchweiƟverbindung 34. Hierzu bildet das stirnseitige Ende des zweiten Randabschnitts 26, insbesondere die randseitige StirnflƤche des Blechbandes 20, einen Absatz 32 aus, der schrƤg und im AusfĆ¼hrungsbeispiel quer, d.h. rechtwinklig, zur LƤngsachse 12 des BehƤlters 10 verlƤuft. Das stirnseitige Ende des zweiten Randabschnitts 26 kann auch derart abgekantet sein, dass die stirnseitige EndflƤche des zweiten Randabschnitts 26 mit dem vorzugsweise mantelfƶrmig verlaufenden dritten Abschnitt 28 einen spitzen Winkel von weniger als 90Ā° einschlieƟt, so dass die SchweiƟverbindung 34 sicher in diesem Bereich angebracht werden kann und insbesondere ein Abtropfen von durch das SchweiƟen erweichtem Material zuverlƤssig verhindert ist.The connection takes place in the embodiment by a welded joint 34. For this purpose, the front end of the second edge portion 26, in particular the edge-side end face of the sheet metal strip 20, a paragraph 32, obliquely and in the embodiment transversely, ie perpendicular to the longitudinal axis 12 of the container 10 , The front end of the second edge portion 26 may also be folded so that the front end surface of the second edge portion 26 with the preferably jacket-shaped extending third portion 28 includes an acute angle of less than 90 Ā°, so that the weld 34 are securely attached in this area can and in particular a drainage of softened by the welding material is reliably prevented.

Durch die Verbindung an dem stirnseitigen Ende des zweiten Randabschnitts 26 ist auƟerdem der Abstand 36 zwischen der fluiddichten Verbindung, beispielsweise der SchweiƟverbindung 34, und der Ausbiegekante 24 konstruktiv vorgegeben. Dieser Abstand betrƤgt im AusfĆ¼hrungsbeispiel etwa das FĆ¼nffache der Dicke 38 des Blechbandes 20, kann aber auch mehr als das Achtfache oder sogar mehr als das Zehnfache betragen.By the connection at the front end of the second edge portion 26, the distance 36 between the fluid-tight connection, such as the welded joint 34, and the bending edge 24 is also structurally predetermined. This distance is in the exemplary embodiment about five times the thickness 38 of the sheet metal strip 20, but can also be more than eight times or even more than ten times.

Der zweite Randabschnitt 26 ist durch eine Krƶpfung 40 gegenĆ¼ber einem an die Krƶpfung 40 in Richtung auf den unterhalb des in der Fig. 2 dargestellten Ausschnitts befindlichen ersten Randabschnitt 22 anschlieƟenden vierten Abschnitt 42 des Blechbandes 20 in das Innere des BehƤlters 10 hinein abgebogen. FĆ¼r die Krƶpfung 40 ist das Blechband 20 an mindestens zwei Stellen derart gebogen, dass die nichtgebogenen Teile parallel zueinander verlaufen. Im AusfĆ¼hrungsbeispiel verlaufen der zweite Randabschnitt 26 und der vierte Abschnitt 42 des Blechbandes 20 parallel zueinander. Diese Abschnitte 26, 42 kƶnnen ebenso wie die weiteren Abschnitte des Blechbandes 20 insbesondere im Wesentlichen zylindrisch und vor allem kreiszylindrisch in Bezug auf die LƤngsachse 12 des BehƤlters 10 verlaufen.The second edge portion 26 is by a crank 40 opposite to the crank 40 in the direction of the below in the Fig. 2 illustrated section located first edge portion 22 subsequent fourth section 42 of the sheet metal strip 20 into the interior of the container 10 is bent into it. For the crank 40, the metal strip 20 is bent in at least two places such that the non-bent parts run parallel to each other. In the exemplary embodiment, the second edge portion 26 and the fourth portion 42 of the sheet metal strip 20 parallel to each other. These sections 26, 42 as well as the other sections of the sheet-metal strip 20 may in particular be substantially cylindrical and, above all, circular-cylindrical with respect to the longitudinal axis 12 of the container 10.

Der durch die Krƶpfung 40 bedingte radiale Versatz 44 des zweiten Randabschnitts 26 gegenĆ¼ber dem vierten Abschnitt 42 des Blechbandes 20 kann grundsƤtzlich 100 % oder sogar mehr als 100 % der Dicke 38 des Blechbandes 20 betragen. In diesem Fall kann sich ein Spalt zwischen dem zweiten Randabschnitt 26 und dem dritten Abschnitt 28 ergeben, in den ein Verbindungsmittel und/oder ein Dichtmittel eingebracht werden kann.
In einer AusfĆ¼hrungsart betrƤgt der radiale Versatz 44 allerdings weniger als 100 % der Dicke 38 des Blechbandes 20, beispielsweise etwa 90 %.The conditional by the crank 40 radial offset 44 of the second edge portion 26 relative to the fourth portion 42 of the sheet metal strip 20 may basically be 100% or even more than 100% of the thickness 38 of the sheet metal strip 20. In this case, a gap may arise between the second edge portion 26 and the third portion 28 into which a connection means and / or a sealant may be introduced.
In one embodiment, however, the radial offset 44 is less than 100% of the thickness 38 of the sheet metal strip 20, for example about 90%.

Dadurch werden der zweite Randabschnitt 26 und/oder der dritte Abschnitt 28 federelastisch ausgelenkt und liegen mit federelastischer Vorspannung aneinander an. In diesem Fall muss durch die Verbindung, beispielsweise die SchweiƟverbindung 34, kein Spalt zwischen dem zweiten Randabschnitt 26 und dem dritten Abschnitt 28 abgedeckt werden.As a result, the second edge portion 26 and / or the third portion 28 are deflected resiliently and are with resilient bias to each other. In this case, no gap between the second edge portion 26 and the third portion 28 must be covered by the connection, for example, the welded joint 34.

Die Krƶpfung 40 des zweiten Randabschnitt 26 ist im Bereich der Ausbiegekante 24 angeordnet. Dadurch stĆ¼tzt sich die oberhalb verlaufende Blechbahn im Bereich der Krƶpfung 40 an der jeweils unterhalb verlaufenden Blechbahn ab. In die wendelfƶrmig verlaufende Nahtstelle, die auf der AuƟenseite zwischen der Ausbiegekante 24 und der Krƶpfung 40 gebildet ist, ist ein Dichtmittel 46 eingebracht, beispielsweise eine Silikonfuge. Dadurch ist verhindert, dass beispielsweise Feuchtigkeit in den Bereich zwischen dem zweiten Randabschnitt 26 und dem dritten Abschnitt 28 eintritt.The crank 40 of the second edge section 26 is arranged in the region of the deflection edge 24. As a result, the above-extending sheet metal web in the region of the crank 40 is supported on the sheet metal web extending below each. In the helically extending seam, which is formed on the outer side between the Ausbiegekante 24 and the crank 40, a sealant 46 is introduced, for example, a silicone joint. This prevents, for example, moisture from entering the region between the second edge section 26 and the third section 28.

Die Fig. 3 zeigt einen Schnitt durch die Verbindungsstelle III eines zweiten AusfĆ¼hrungsbeispiels des BehƤlters 10 der Fig. 1. Der erste Randabschnitt 122 ist unter Ausbildung eines Falzes gefaltet und anschlieƟend ist das freie Ende unter einem Winkel zwischen 15Ā° und 70Ā°, insbesondere zwischen 20Ā° und 45Ā° und im AusfĆ¼hrungsbeispiel von etwa 30Ā° gegenĆ¼ber der LƤngsachse 12 des BehƤlters 10 ausgebogen. In den Bereich zwischen dem ausgebogenen Endabschnitt des ersten Randabschnitts 122 und dem vierten Abschnitt 42 ist das Verbindungsmittel 46 eingebracht. Diese Anordnung verbessert das Ablaufverhalten von beispielsweise auf die AuƟenflƤche des BehƤlters 10 auftreffendem Regenwasser.The Fig. 3 shows a section through the junction III of a second embodiment of the container 10 of Fig. 1 , The first edge portion 122 is folded to form a fold and then the free end is bent at an angle between 15 Ā° and 70 Ā°, in particular between 20 Ā° and 45 Ā° and in the embodiment of about 30 Ā° relative to the longitudinal axis 12 of the container 10. In the area between the bent end portion of the first edge portion 122 and the fourth portion 42, the connecting means 46 is introduced. This arrangement improves the drainage behavior of, for example, rainwater striking the outer surface of the container 10.

Die Fig. 4 zeigt einen Schnitt durch die Verbindungsstelle IV eines dritten AusfĆ¼hrungsbeispiels des BehƤlters 10 der Fig. 1. Ein an die Ausbiegekante 24 in Richtung auf den zweiten Randabschnitt 26 angegrenzender fĆ¼nfter Abschnitt 48 des Blechbandes 20 ist durch eine weitere Krƶpfung 50 gegenĆ¼ber einem an die weitere Krƶpfung 50 in Richtung auf den zweiten Randabschnitt 26 anschlieƟenden sechsten Abschnitt 52 des Blechbandes 20 zur AuƟenseite des BehƤlters 10 hin abgebogen. Der zweite Randabschnitt 26 ist mit dem fĆ¼nften Abschnitt 48 fluiddicht verbunden, im AusfĆ¼hrungsbeispiel durch die SchweiƟverbindung 34.The Fig. 4 shows a section through the junction IV of a third embodiment of the container 10 of Fig. 1 , One to the bending edge 24 in the direction of the second edge portion 26 adjacent fifth section 48 of the sheet metal strip 20 is bent by a further crank 50 against a subsequent to the second crank portion 50 in the direction of the second edge portion 26 sixth section 52 of the sheet metal strip 20 to the outside of the container 10 out. The second edge section 26 is fluid-tightly connected to the fifth section 48, in the exemplary embodiment by the welded connection 34.

Der Winkel 54 der weiteren Krƶpfung 50 betrƤgt weniger als 45Ā°, insbesondere weniger als 30Ā° und vorzugsweise weniger als 20Ā°; im AusfĆ¼hrungsbeispiel betrƤgt der Winkel 54 etwa 10Ā°. Dadurch sind die GefĆ¼geverƤnderungen an den Ausbiegestellen des Blechbandes 20 reduziert. Der radiale Ɯberstand des fĆ¼nften Abschnitts 48 gegenĆ¼ber dem sechsten Abschnitt 52 betrƤgt im AusfĆ¼hrungsbeispiel etwas mehr als 100 % der Dicke 38 des Blechbandes 20, so dass der fĆ¼nfte Abschnitt 48 in lockerer Anlage an dem zweiten Randabschnitt 26 ist. In einer alternativen AusfĆ¼hrungsform kann der radiale Ɯberstand der weiteren Krƶpfung 50 auch 100 % der Dicke 38 des Blechbandes 20 betragen, oder auch, wie im Zusammenhang mit der Krƶpfung 40 des ersten und zweiten AusfĆ¼hrungsbeispiels beschrieben, weniger als 95 %, insbesondere weniger als 90 % und vorzugsweise weniger als 85 %, so das eine selbstjustierende und/oder federelastisch klemmende Anlage des fĆ¼nften Abschnitts 48 an dem zweiten Randabschnitt 26 erfolgt.The angle 54 of the further crank 50 is less than 45 Ā°, in particular less than 30 Ā° and preferably less than 20 Ā°; in the embodiment, the angle 54 is about 10 Ā°. As a result, the structural changes are reduced at the Ausbiegestellen the metal strip 20. The radial projection of the fifth portion 48 relative to the sixth portion 52 in the embodiment is slightly more than 100% of the thickness 38 of the sheet metal strip 20, so that the fifth portion 48 is in loose contact with the second edge portion 26. In an alternative embodiment, the radial projection of the further offset 50 can also be 100% of the thickness 38 of the sheet-metal strip 20, or also, as described in connection with the crank 40 of the first and second embodiments, less than 95%, in particular less than 90%. and preferably less than 85%, so that a self-aligning and / or resiliently clamping installation of the fifth section 48 takes place at the second edge section 26.

Der zweite Randabschnitt 26 fluchtet auf der Innenseite des BehƤlters 10 mit der durch den sechsten Abschnitt 52 gebildeten Innenwandung des BehƤlters 10. In dem dritten AusfĆ¼hrungsbeispiel ist es insbesondere nicht erforderlich, den zweiten Randabschnitt 26 gegenĆ¼ber einem angrenzenden Abschnitt des Blechbandes 20, beispielsweise gegenĆ¼ber dem vierten Abschnitt 42 des ersten und zweiten AusfĆ¼hrungsbeispiels, abzubiegen. Zugehƶrige GefĆ¼geverƤnderungen werden dadurch zuverlƤssig vermieden.The second edge portion 26 is aligned on the inside of the container 10 with the formed by the sixth portion 52 inner wall of the container 10. In the third embodiment, it is particularly not necessary, the second edge portion 26 against an adjacent portion of the sheet metal strip 20, for example, opposite the fourth section 42 of the first and second embodiments. Associated microstructural changes are thereby reliably avoided.

Die Fig. 5 zeigt einen Schnitt durch die Verbindungsstelle V eines vierten AusfĆ¼hrungsbeispiels des BehƤlters 10 der Fig. 1. Die Fig. 6 zeigt eine perspektivische Ansicht von auƟen auf einen im Bereich der Verbindungsstelle gemƤƟ Fig. 5 geschnittenen BehƤlter 10.The Fig. 5 shows a section through the junction V of a fourth embodiment of the container 10 of Fig. 1 , The Fig. 6 shows a perspective view from the outside to one in the region of the joint according to Fig. 5 cut container 10.

Ein an die Ausbiegekante 24 in Richtung auf den zweiten Randabschnitt 26 angrenzender fĆ¼nfter Abschnitt 48 des Blechbandes 20 ist durch eine weitere Krƶpfung 50 gegenĆ¼ber einem an die weitere Krƶpfung 50 in Richtung auf den zweiten Randabschnitt 26 anschlieƟenden sechsten Abschnitt 52 des Blechbandes 20 zur AuƟenseite des BehƤlters 10 hin abgebogen. Abgesehen von der weiteren Krƶpfung 50 entspricht der fĆ¼nfte Abschnitt 48 des dritten und vierten AusfĆ¼hrungsbeispiels der Fig. 4 und 5 dem dritten Abstand des ersten und zweiten AusfĆ¼hrungsbeispiels der Fig. 2 und 3. Der zweite Randabschnitt 26 ist mit dem fĆ¼nften Abschnitt 48 auf der Innenseite des BehƤlters 10 fluiddicht verbunden, im AusfĆ¼hrungsbeispiel durch die SchweiƟverbindung 34.
Im AusfĆ¼hrungsbeispiel ist die fluiddichte Verbindung dabei auf der Hƶhe der Krƶpfung 50 angeordnet, wodurch die Krƶpfung 50 eine zusƤtzliche mechanische Stabilisierung erfƤhrt.A fifth section 48 of the sheet-metal strip 20 adjoining the bending edge 24 in the direction of the second edge section 26 is connected to the outside of the container by a further offset 50 relative to a sixth section 52 of the sheet-metal strip 20 adjoining the further offset 50 in the direction of the second edge section 26 10 bent down. Apart from the further crank 50 corresponds to the fifth section 48 of the third and fourth embodiment of the Fig. 4 and 5 the third distance of the first and second embodiments of the FIGS. 2 and 3 , The second edge section 26 is fluid-tightly connected to the fifth section 48 on the inside of the container 10, in the exemplary embodiment by the welded connection 34.
In the exemplary embodiment, the fluid-tight connection is arranged at the height of the crank 50, whereby the crank 50 undergoes additional mechanical stabilization.

Der Winkel 54 der weiteren Krƶpfung 50 ist grĆ¶ĆŸer als im dritten AusfĆ¼hrungsbeispiel der Fig. 4, insbesondere betrƤgt der Winkel mehr als 30Ā°, insbesondere mehr als 35Ā° und weniger als 70Ā° und vorzugsweise mehr als 35Ā° und weniger als 60Ā°. Die LƤnge 56 der weiteren Krƶpfung 50 betrƤgt weniger als 400 % der Dicke 38 des Blechbandes 20, insbesondere weniger als 400 % und vorzugsweise weniger als 300 %. Im AusfĆ¼hrungsbeispiel betrƤgt die LƤnge 56 der weiteren Krƶpfung 50 mehr als 150 % und weniger als 250 % der Dicke 38 des Blechbandes 20.The angle 54 of the further crank 50 is greater than in the third embodiment of the Fig. 4 In particular, the angle is more than 30 Ā°, in particular more than 35 Ā° and less than 70 Ā° and preferably more than 35 Ā° and less than 60 Ā°. The length 56 of the further crank 50 is less than 400% of the thickness 38 of the sheet metal strip 20, in particular less than 400%, and preferably less than 300%. In the exemplary embodiment, the length 56 of the further crank 50 is more than 150% and less than 250% of the thickness 38 of the sheet metal strip 20th

Der Abstand 36 der weiteren Krƶpfung 50 von der Ausbiegekante 24 betrƤgt im AusfĆ¼hrungsbeispiel mehr als das Zweifache und weniger als das Zehnfache der Dicke 38 des Blechbandes 20, insbesondere mehr als das Dreifache und weniger als das Achtfache, vorzugsweise mehr als das Vierfache und weniger als das Sechsfache. Der Abstand 36 der weiteren Krƶpfung 50 von der Ausbiegekante 24 betrƤgt auƟerdem mehr als 50 % und/oder weniger als 250 % der radialen Erstreckung des ausgebogenen ersten Randabschnitts 22, insbesondere mehr als 70 % und/oder weniger als 200 % und vorzugsweise mehr als 80 % und/oder weniger als 150 %.The distance 36 of the further crank 50 of the Ausbiegekante 24 is in the embodiment more than twice and less than ten times the thickness 38 of the sheet metal strip 20, in particular more than three times and less than eight times, preferably more than four times and less than that sixfold. The distance 36 of the further offset 50 from the deflection edge 24 is also more than 50% and / or less than 250% of the radial extent of the scalloped first edge portion 22, in particular more than 70% and / or less than 200% and preferably more than 80 % and / or less than 150%.

Der radiale Ɯberstand des fĆ¼nften Abschnitts 48 gegenĆ¼ber dem sechsten Abschnitt 52 betrƤgt im AusfĆ¼hrungsbeispiel etwas mehr als 100 % der Dicke 38 des Blechbandes 20, so dass der fĆ¼nfte Abschnitt 48 in lockerer Anlage an dem zweiten Randabschnitt 26 ist. In einer alternativen AusfĆ¼hrungsform kann der radiale Ɯberstand der weiteren Krƶpfung 50 auch 100 % der Dicke 38 des Blechbandes 20 betragen oder auch, wie im Zusammenhang mit der Krƶpfung 40 des ersten und zweiten AusfĆ¼hrungsbeispieles beschrieben, weniger als 95 %, insbesondere weniger als 90 % und vorzugsweise weniger als 85 %, so dass eine selbstjustierende und/oder federelastisch klemmende Anlage des fĆ¼nften Abschnitts 48 an dem zweiten Randabschnitt 26 erfolgt.The radial projection of the fifth portion 48 relative to the sixth portion 52 in the embodiment is slightly more than 100% of the thickness 38 of the sheet metal strip 20, so that the fifth portion 48 is in loose contact with the second edge portion 26. In an alternative embodiment, the radial projection of the further crank 50 may also be 100% of the thickness 38 of the sheet metal strip 20 or, as described in connection with the crank 40 of the first and second embodiments, less than 95%, in particular less than 90% and preferably less than 85%, so that a self-aligning and / or resiliently clamping installation of the fifth section 48 takes place at the second edge section 26.

Der zweite Randabschnitt 26 fluchtet auf der Innenseite des BehƤlters 10 mit der durch den sechsten Abschnitt 52 gebildeten Innenwandung des BehƤlters 10. In dem vierten AusfĆ¼hrungsbeispiel der Fig. 5 ist es insbesondere nicht erforderlich, den zweiten Randabschnitt 26 gegenĆ¼ber einem angrenzenden Abschnitt des Blechbandes 20, insbesondere gegenĆ¼ber dem sechsten Abschnitt 52, abzubiegen.The second edge portion 26 is aligned on the inside of the container 10 with the inner wall formed by the sixth portion 52 of the container 10. In the fourth embodiment of Fig. 5 is it In particular, it is not necessary to bend the second edge section 26 with respect to an adjacent section of the sheet-metal strip 20, in particular with respect to the sixth section 52.

Wie aus der perspektivischen Ansicht der Fig. 6 ersichtlich, ist die Verbindung zwischen dem zweiten Randabschnitt 26 und dem fĆ¼nften Abschnitt 48 durch weitere Verbindungsstellen 60 stabilisiert. Die weiteren Verbindungsstellen 60 kƶnnen beispielsweise durch PunktschweiƟungen hergestellt sein, wobei die Kontur 58 der weiteren Verbindungsstelle 60 beispielsweise im Wesentlichen kreisfƶrmig oder oblong ausgefĆ¼hrt sein kann. Die weiteren Verbindungsstellen 60 kƶnnen in Umfangsrichtung um den BehƤlter 10 Ƥquidistant angeordnet sein, beispielsweise in einem Abstand, der mehr als das FĆ¼nffache und/oder weniger als das 20-fache der Dicke 38 des Blechbandes 20 betrƤgt, insbesondere mehr als das Achtfache und/oder weniger als das 30-fache, und vorzugsweise mehr als das Zwƶlffache und/oder weniger als das 25-fache.As seen from the perspective view of Fig. 6 As can be seen, the connection between the second edge portion 26 and the fifth portion 48 is stabilized by further connection points 60. The further connection points 60 can be produced, for example, by spot welding, wherein the contour 58 of the further connection point 60 can be designed, for example, substantially circular or oblong. The further connection points 60 may be arranged equidistant in the circumferential direction around the container 10, for example at a distance which is more than five times and / or less than 20 times the thickness 38 of the sheet metal strip 20, in particular more than eight times and / or less than 30 times, and preferably more than twelvefold and / or less than 25 times.

Claims (9)

  1. A container (10) produced from a single-layered, helically bent sheet-metal strip (20), a first helically extending edge section (22) of the sheet-metal strip (20) being bent toward the outside of the container (10) while forming a helically extending outwardly bent edge (24), a second, helically extending edge section (26) of the sheet-metal strip (20) overlapping on the inside of the container (10) a third section (28) of the sheet-metal strip (20) adjacent to the outwardly bent edge (24) and extending from the outwardly bent edge (24) in the direction of the second edge section (26), the second edge section (26) being connected, fluid-tight, to the third section (28) of the sheet-metal strip (20) on the inside of the container (10), a sealant (46) being introduced on the outside of the container (10) in a helically extending seam that is formed between the outwardly bent edge (24) of the first edge section (22) and the second edge section (26), in particular between the outwardly bent edge (24) of the first edge section (22) and an offset (40) of the second edge section (26).
  2. The container (10) according to Claim 1, characterised in that the second edge section (26) is connected, fluid-tight, at its helically extending end edge (30) to the third section (28) of the sheet-metal strip (20).
  3. The container (10) according to Claim 1 or 2, characterised in that an end edge (30) of the second edge section (26) forms a step on the inside of the container (10) that extends diagonally, and in particular transversely to the vertical longitudinal axis (12) of the container (10).
  4. The container (10) according to Claim 1 or to any of the preceding claims, characterised in that the fluid-tight connection is a welded connection (34).
  5. The container (10) according to Claim 1 or any of the preceding claims, characterised in that the distance (36) between the fluid-tight connection, in particular a welded connection (34), and the outwardly bent edge (24) is more than twice, in particular more than three times, and preferably more than five times the thickness (38) of the sheet-metal strip (20).
  6. The container (10) according to Claim 1 or any of the preceding claims, characterised in that the second edge section (26) is bent into the interior of the container (10) by an offset (40) relative to a fourth section (42) of the sheet-metal strip (20) adjoining the offset (40) in the direction of the first edge section (22).
  7. The container (10) according to Claim 6, characterised in that the radial displacement (44) of the second edge section (26) relative to the fourth section (42) of the sheet-metal strip caused by the offset (40) is less than 95%, in particular less than 90%, and preferably less than 85% of the thickness (38) of the sheet-metal strip (20).
  8. The container (10) according to Claim 6 or 7, characterised in that the offset (40) of the second edge section (26) is located at the level of the outwardly bent edge (24).
  9. The container (10) according to Claim 1 or any of the preceding claims, characterised in that a fifth section (48) of the sheet-metal strip (20) adjoining the outwardly bent edge (24) in the direction of the second edge section (26) is bent toward the outside of the container (10) by another offset (50) relative to a sixth section (52) of the sheet-metal strip (20) adjoining the additional offset (50) in the direction of the second edge section (26), and that the second edge section (26) is connected, fluid-tight, to the fifth section (48) bordered by the outwardly bent edge (24) on the one hand, and the additional offset (50) on the other hand.
EP13730115.6A 2012-09-26 2013-06-13 Container produced from a single-layered, helically bent sheet-metal strip Active EP2900574B1 (en)

Applications Claiming Priority (2)

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DE102012018935.4A DE102012018935A1 (en) 2012-09-26 2012-09-26 Container made of a single-layer, helically bent sheet metal strip
PCT/EP2013/001741 WO2014048515A1 (en) 2012-09-26 2013-06-13 Container produced from a single-layered, helically bent sheet-metal strip

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EP2900574B1 true EP2900574B1 (en) 2017-04-05

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DE (1) DE102012018935A1 (en)
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EP2900574A1 (en) 2015-08-05
US10023352B2 (en) 2018-07-17
WO2014048515A1 (en) 2014-04-03
US20150274352A1 (en) 2015-10-01
RU2015113350A (en) 2016-11-20
DE102012018935A1 (en) 2014-03-27
RU2604458C2 (en) 2016-12-10

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