EP2502854A1 - Réservoir de stockage en plastique pour la réception de liquides - Google Patents

Réservoir de stockage en plastique pour la réception de liquides Download PDF

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Publication number
EP2502854A1
EP2502854A1 EP12159817A EP12159817A EP2502854A1 EP 2502854 A1 EP2502854 A1 EP 2502854A1 EP 12159817 A EP12159817 A EP 12159817A EP 12159817 A EP12159817 A EP 12159817A EP 2502854 A1 EP2502854 A1 EP 2502854A1
Authority
EP
European Patent Office
Prior art keywords
storage tank
tank according
base body
wall
dome
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Withdrawn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
EP12159817A
Other languages
German (de)
English (en)
Inventor
Torsten Fusenig
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.)
Aquasolid SA
Original Assignee
Aquasolid SA
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 Aquasolid SA filed Critical Aquasolid SA
Publication of EP2502854A1 publication Critical patent/EP2502854A1/fr
Withdrawn legal-status Critical Current

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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
    • B65D88/00—Large containers
    • B65D88/02—Large containers rigid
    • B65D88/10—Large containers rigid parallelepipedic
    • 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
    • B65D88/76—Large containers for use underground
    • 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

Definitions

  • the invention relates to a storage tank made of plastic for receiving liquids.
  • Storage tanks are used both inside and outside buildings to store liquids. When used outside of buildings, an underground storage tank is often preferred, either for aesthetic reasons or to save above-ground storage space.
  • plastic storage tanks Due to the combination of low weight, simple manufacturing methods and low-cost raw materials, plastic storage tanks are becoming increasingly popular. Since such a storage tank, especially when used as a buried tank, is exposed to large vertical loads, a corresponding stability must be achieved via a suitable design of the storage tank.
  • the object of the invention is to provide a storage tank that has a light weight and high stability at high volume.
  • a storage tank made of plastic for receiving liquids has a substantially cuboid base body comprising a bottom, a top, two opposite end faces and two longitudinal sides.
  • a plurality of at least partially annular reinforcing elements are provided, which extend vertically in the region of the two longitudinal sides and in the region of the upper sides in a plane parallel to the end sides of the storage tank and which are formed integrally with the wall of the base body.
  • At least one tank dome is formed on the upper side of the main body.
  • Such a storage tank has a high mechanical stability, since the reinforcing elements reinforce the top and the two longitudinal sides.
  • the inside of the storage tank is accessible via the tank dome. It is used for maintenance purposes or for the introduction of additional equipment.
  • a preferred embodiment provides that the reinforcing elements seen in longitudinal section through the partial ring extend approximately circular arc. Due to the circular arc shape high mechanical forces can be absorbed in structurally simple design, which act both vertically and horizontally on the storage tank.
  • the partially annular elements extend exclusively in the region of the two longitudinal sides and at least partially in the region of the upper side.
  • the reinforcing elements are not formed. This can be considered sufficient for reasons of mechanical stability, since especially when used in the earth, the vertical forces acting from above and the horizontal forces are critical. In addition, this achieves a simplified structure.
  • each reinforcing element has a U-shape with a base wall, which is followed by two side walls, which are formed integrally with the wall of the base body. Seen in cross-section, the base wall of at least one reinforcing element on the upper side bulges at least partially out of the wall of the base body. In the area of the longitudinal sides, the base wall bulges over the wall of the base body into the interior of the storage tank. In this construction, both the top and the longitudinal sides are reinforced with respect to the absorption of forces from the outside and from the inside. By bulging out and arching in of the base wall, the cuboid basic shape of the entire storage tank remains largely intact.
  • a further embodiment provides that at least one reinforcing element, which extends adjacent to the tank dome, is formed so that its base wall protrudes from the top of the storage tank and reaches almost the height of the upper boundary of the tank dome, but does not protrude beyond the tank dome. In this way, the area around the tank dome is reinforced. However, the bulge of the reinforcing element is lower than the upper limit of the tank dome, so that structures are not disturbed by the bulge.
  • Another embodiment provides that the underside of the main body is reinforced with projecting into the interior of the storage tank dome-shaped reinforcements, the bottom continues to form a stable support.
  • the storage tank comprises at least two tank domes, of which two tank domes are arranged on the front sides of the storage tank.
  • the reinforcing elements also extend on the underside of the main body, whereby they preferably form a ring and thereby can absorb the forces acting on the storage tank particularly well.
  • the end faces of the main body can be formed predominantly vertically, which has a particularly large internal volume result.
  • This particularly preferred design is additionally formed mirror-symmetrically to a surface parallel to the end face and a further surface parallel to the longitudinal side of the base body. Each mirror plane includes exactly one of the two central axes of the substantially rectangular upper side of the main body. Therefore, both blow mold halves of a two-part blow mold can be made identical, whereby the storage of the blow mold halves is simplified.
  • FIG. 1 shows a storage tank 100 in a perspective view in a first embodiment.
  • This storage tank 100 comprises a substantially cuboid basic body 110 which has an upper side 112, a lower side 164, two opposite end faces 114, 116 and two longitudinal sides 118. The cuboid shape is rounded off at the edges and corners.
  • a tank dome 120 is formed, which serves for maintenance purposes or for introducing additional equipment.
  • Each end face 114, 116 includes an inlet 122, 124 and a drain 126.
  • Each end face 114, 116 includes six vertically arranged stiffening elements 128, 130, 132, 134, 136, 138. These stiffening elements 128 to 138 are U-shaped and each have two side walls and a base wall. Depending on the design of the storage tank 100, more or fewer than six stiffening elements 128 to 138 may be provided in each end face 114, 116.
  • the two longitudinal sides 118 and the upper side 112 of the storage tank 100 contain five reinforcing elements 140, 142, 144, 146, 148. These reinforcing elements 140 to 148 are U-shaped and each have a base wall to which two side walls adjoin. In the region of the longitudinal sides 118, the reinforcing elements 140 to 148 extend vertically in the operating state of the storage tank 100 and horizontally on the upper side 112. The reinforcing elements 140 to 148 are part-ring-shaped and are present exclusively on the longitudinal sides 118 and the top 112.
  • the reinforcing elements 140 to 148 are respectively arched into the interior of the main body 110 in the region of the longitudinal sides 118, wherein the depth of the concavity is greater, the closer the reinforcing element 140 to 148 of the lower side 164 or the upper side 112 of the main body 110 comes.
  • the reinforcing elements 140 to 148 have different embodiments.
  • the reinforcing element 144 which tapers toward the tank dome 120, reaches the surface 112 of the main body 110 from both longitudinal sides 118.
  • the reinforcing elements 140, 142, 146, 148 passing the tank dome 120 reach the surface from both longitudinal sides 118 112 of the base body 110 and bulge out of this.
  • the stiffening elements 128 to 138 and the reinforcing elements 140 to 148 are each formed integrally with the main body 110, so that the tightness of the storage tank 100 is given.
  • FIG. 2 indicates the storage tank FIG. 1 in a side view. Elements with the same structure or functions have the same reference numerals, as is the case in the other figures.
  • the end face 116 has a further drain 150 of the storage tank 100.
  • the storage tank 100 is mirror-symmetrical to the plane AA. This has the advantage that the statics for designing the wall thickness of the storage tank 100 is considerably simplified.
  • the tank dome 120 protrudes from the upper side 112 of the main body 110 by a first height H.
  • the reinforcing elements 140 to 148 bulge out of the upper side 112 of the main body 110 by a second height h.
  • the second height h should, in order to achieve a large gain, be as high as possible, but always smaller than or equal to the first height H, in order to achieve a compact design.
  • FIG. 3 indicates the storage tank FIG. 2 in a sectional view along the plane AA.
  • the stiffening elements 152 to 162 of the end face 116 can be seen. These serve to stiffen the end face 116 against vertical forces and thereby increase the stability of the storage tank 100th
  • the base walls extend partially annular shape with the same curvatures. Because the circular shape can absorb very well radially acting forces, the wall thickness of the storage tank 100 can be made thinner when approaching this shape, which causes both a saving of material by reducing the wall thickness or a constant wall thickness increased security of the storage tank 100.
  • FIG. 4 shows the storage tank after the FIGS. 1 and 2 in a top view.
  • the bottom 164 of the storage tank 100 can be seen.
  • This bottom 164 is reinforced with dome-like reinforcements 166, 168, 170 172.
  • These dome-like reinforcements 166 to 172 protrude into the main body 110 of the storage tank and are distributed over the entire bottom 164 according to a hexagonal pattern.
  • FIG. 5 shows a sectional view of the reinforcing element 140 in the region of the longitudinal sides 118 of the storage tank 100.
  • the reinforcing element 140 is constructed U-shaped, wherein the angles ⁇ , ⁇ are preferably the same size.
  • the reinforcing element 140 serves to receive radially acting forces. These are picked up by the base wall 174. Therefore, the base wall 174 is formed over the entire reinforcing member 140 with the same width b.
  • the angles ⁇ , ⁇ are predetermined by the blow molding process.
  • the side walls 176, 178 of the reinforcing element 140 connect the base wall 174 to the plastic body of the longitudinal sides 118 of the main body 110.
  • the base wall 174 of the reinforcing element 140 is substantially circular arc-shaped.
  • the Einwölbtiefe t of the side walls 176, 178 and the entire width B of the reinforcing member 140 changes depending on the position of a minimum at the central longitudinal axis of the longitudinal side 118 to a maximum at the edge of the longitudinal side 118 to the top 112 and bottom 164 (both in FIG. 5 not shown) of the main body 110.
  • the change in the width B of a reinforcing element is, for example, in FIG FIG. 2 on the course of the reinforcing elements 140 to 148 on the longitudinal side 118 of the storage tank 100 to recognize.
  • FIG. 6 shows a sectional view of the reinforcing member 140 in the region of the top 112 of the storage tank 100.
  • the side walls 176, 178 of the reinforcing element connect the base wall 174 with the plastic body of the top 112 of the main body 110.
  • the reinforcing member 140 bulges, as in FIG. 3 can be seen, with its base wall 174 out of the surface 112 in a circular arc. Therefore, the height T of the side walls 176, 178 and the width B of the reinforcing member 140 changes depending on the position up to the maximum height h of the reinforcing member 140 over the top 112 at the central longitudinal axis of the top 112 of the main body 110th
  • FIG. 7 shows a sectional view of a stiffening element 128 in the region of the end face 114 of the storage tank 100.
  • the stiffening element is U-shaped, wherein the angles ⁇ , ⁇ are preferably the same size.
  • the width W of the base wall 180 of the stiffening element 128 does not change in the course of the stiffening element 128 on the end face 114. Since the base wall 180 of the stiffening element 128 extends parallel to the end face 114, the depth s of the stiffening element 128 and the width of the stiffening element remains 128 over the entire course over the end face 114 of the storage tank about the same.
  • Other stiffening elements 130 to 138 and 152 to 162 in one of the end faces 114, 116 may well have a same or different depth s.
  • FIG. 8 shows a storage tank 200 in a perspective view in a second embodiment.
  • This storage tank 200 is distinguished from the storage tank 100 of FIGS. 1 to 7 in that it comprises a second tank dome 220 in addition to the first tank dome 120.
  • a second tank dome 220 in addition to the first tank dome 120.
  • the position of the second tank dome 220 with respect to the first tank dome 120 is selected so that at least one reinforcing element in each case between the tank domes 120, 220 and between one of the tank domes 120, 220 and the end face 114, 116 of the main body 110 closest to this tank dome 120, 220 140 to 148 is present, which bulges out of the top 112. In this way, the area around the tank domes 120, 220 is reinforced.
  • FIG. 9 shows a storage tank 300 in a perspective view in a third embodiment.
  • This third embodiment is distinguished from the second embodiment of the storage tank 200 in that the tank domes 120, 220 are arranged on the respective end faces 114, 116 of the storage tank 300.
  • a larger usable internal volume of the storage tank 300 than the storage tank 100 or storage tank 200 is achieved with the same main body 110.
  • FIG. 9 shows in comparison to the FIGS. 1 and 8th
  • the other embodiments of the storage tanks 100, 200 modified end faces 114, 116. So runs a wall 390 of the tank dome 120, 220 at the respective end face 114, 116 to the bottom 164 of the body 110.
  • Two support members 386, 388 anchor the wall 390 of the tank dome 220 in the end face 114 of the main body 110th
  • FIG. 10 shows the storage tank 300 after the FIG. 9 in a top view.
  • the reinforcing elements 140 to 148, 396, 398 are here also formed along the underside 164 of the main body 110, as can be seen in the region of the tank domes 120, 220. Accordingly, the reinforcing elements 144 to 148 are formed as complete rings, while the reinforcing elements 140, 142, 396, 398, which run towards a tank dome 120, 220 and reach the surface 112 of the main body 110, are formed as partial rings.
  • the storage tank 100, 200 or 300 is preferably designed as a blow molding of polyethylene. All designs of the storage tank 100, 200 or 300 are designed mirror-symmetrically to the two central axes of the substantially rectangular upper side 112 of the main body 110. This is advantageous because it simplifies the statics for the construction of the storage tank.
  • the particularly preferred third embodiment of the storage tank 300 according to the Figures 9 and 10 are, since the dividing plane of the blow molds for the blow molding process is parallel to the top 112, in a two-part blow mold both mold halves are constructed the same, with one mold half rotated by 180 ° to the other is used.
  • the ideal internal volume of a storage tank 100, 200 or 300 has turned out to be an internal volume of approx. 5000 liters.
  • the design freedom of the mold is limited by the fact that the storage tank should fulfill the usual transport conditions.
  • a substantially parallelepiped basic body is specified, which in a first spatial direction should not exceed 2.40 meters, which corresponds to the loading width of a truck, and in a second orientation 1.35, which corresponds to half the loading height of a truck.
  • a stack height of two storage tanks is reached on a truck.
  • This flat design is also advantageous in terms of groundwater depth.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
EP12159817A 2011-03-25 2012-03-16 Réservoir de stockage en plastique pour la réception de liquides Withdrawn EP2502854A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202011000683U DE202011000683U1 (de) 2011-03-25 2011-03-25 Lagertank aus Kunststoff zur Aufnahme von Flüssigkeiten

Publications (1)

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EP2502854A1 true EP2502854A1 (fr) 2012-09-26

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EP12159817A Withdrawn EP2502854A1 (fr) 2011-03-25 2012-03-16 Réservoir de stockage en plastique pour la réception de liquides

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EP (1) EP2502854A1 (fr)
DE (1) DE202011000683U1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015014594A1 (de) * 2015-11-12 2017-05-18 Reinhard Boller Behälter aus Kunststoff mit besonders gestalteten Verstärkungsrippen
EP3971108A1 (fr) * 2020-09-21 2022-03-23 Rototec S.p.A. Réservoir hydraulique

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3938689A (en) * 1971-07-08 1976-02-17 Munnik Nicholas Marie De Processing tank
FR2798913A1 (fr) * 1999-09-24 2001-03-30 Neveux Ets Cuve en polyethylene rotomoule de grandes dimensions devant etre enterree et procede de rotomoulage correspondant
US20050178721A1 (en) * 2004-02-18 2005-08-18 Lombardi Francis T.Ii Blow Molded Septic Tank and Method of Manufacture
EP1964791A1 (fr) * 2007-03-01 2008-09-03 Aco Severin Ahlmann Gmbh & Co. Kg Récipient

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3938689A (en) * 1971-07-08 1976-02-17 Munnik Nicholas Marie De Processing tank
FR2798913A1 (fr) * 1999-09-24 2001-03-30 Neveux Ets Cuve en polyethylene rotomoule de grandes dimensions devant etre enterree et procede de rotomoulage correspondant
US20050178721A1 (en) * 2004-02-18 2005-08-18 Lombardi Francis T.Ii Blow Molded Septic Tank and Method of Manufacture
EP1964791A1 (fr) * 2007-03-01 2008-09-03 Aco Severin Ahlmann Gmbh & Co. Kg Récipient

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