EP0510853B1 - Système de revêtement pour réservoir avec col scellé - Google Patents

Système de revêtement pour réservoir avec col scellé Download PDF

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Publication number
EP0510853B1
EP0510853B1 EP92303278A EP92303278A EP0510853B1 EP 0510853 B1 EP0510853 B1 EP 0510853B1 EP 92303278 A EP92303278 A EP 92303278A EP 92303278 A EP92303278 A EP 92303278A EP 0510853 B1 EP0510853 B1 EP 0510853B1
Authority
EP
European Patent Office
Prior art keywords
collar
tank
collars
wall
opening
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.)
Expired - Lifetime
Application number
EP92303278A
Other languages
German (de)
English (en)
Other versions
EP0510853A2 (fr
EP0510853A3 (en
Inventor
Ronald M. Matyja
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.)
Culligan International Co
Original Assignee
Culligan International Co
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Filing date
Publication date
Application filed by Culligan International Co filed Critical Culligan International Co
Publication of EP0510853A2 publication Critical patent/EP0510853A2/fr
Publication of EP0510853A3 publication Critical patent/EP0510853A3/en
Application granted granted Critical
Publication of EP0510853B1 publication Critical patent/EP0510853B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B65D90/00—Component parts, details or accessories for large containers
    • B65D90/02—Wall construction
    • B65D90/04—Linings
    • B65D90/046—Flexible liners, e.g. loosely positioned in the container

Definitions

  • Various water tanks and the like are desirably lined with a flexible plastic barrier to prevent corrosion of the tank, or the leaching of undesirable substances. This is especially the case when the tank body is made of steel which, apart from the corrosion problem, can exhibit significant advantages over other materials.
  • a system for connecting a plastic tank lining to a penetration fitting which forms an opening through a tank wall.
  • an improved structure for a tank is provided which is easier to assemble, and which provides an air and water tight seal between the liner and the tank wall without the use of sealants or direct compression gaskets.
  • a direct compression gasket is a gasket which is under constant compression.
  • a disadvantage of such a gasket is that, over a period of time it can take a compression set due to the constant pressure and can lose effectiveness.
  • the Culligan International Company has sold a tank lining system where a yoke is required. By this invention such a yoke is eliminated.
  • the pre-characterising part of claim 1 is based on US-A-4 537 329, and the distinguishing features of the present invention are set out in claim 1.
  • a tank lining system comprises a tank having a wall defining a first opening.
  • a flexible sheet lining abuts the interior surface of the wall and defines a second opening that is aligned with the first opening of the tank wall.
  • a first collar surrounds the first opening, the first collar being attached to the tank, typically by welding when the tank is metal and the first collar is made of a metal which is compatible to the metal of the tank.
  • both the tank and the first collar may be made of steel.
  • a second collar surrounds the second opening, and is attached by an appropriate sealing to the flexible sheet, for example radio frequency (RF) heat sealing, solvent welding, spin welding, ultrasonic welding, contact heating, or any other desired process.
  • RF radio frequency
  • the flexible sheet may be made of vinyl plastic or polyurethane sheeting, with the second collar being made of a corresponding, but typically rigid, plastic which is sealingly compatible with the plastic of the sheet.
  • Means are provided for retaining the first and second collars together, while providing a seal of the junction area that is defined between them.
  • O-ring for sealing the junction area, with the O-ring being of the non-direct compression type, as is the case with respect to O-rings, for an improved lifetime of the seal.
  • the second collar is surrounded by the first collar in retained-together relation.
  • This retained-together relation can be accomplished simply by attaching with bolts if desired.
  • the first collar may define spaced, inwardly projecting first locking flange means, while the second collar defines spaced, outwardly projecting second locking flange means which are proportioned to pass axially through and to rotationally interlock with the first locking flange means.
  • relative rotation of the first and second collars with their respective locking flange means positioned for interlocking can cause the two collars to enter into rotationally interlocking relation with each other through the respective locking flanges, to cause axial locking together.
  • nut means threadedly connected to the second collar and abutting the first collar to force, upon rotation of the nut means, the first and second locking flange means into axially loaded relation together.
  • a steel water tank 10 comprising a tank wall 12, to which there is attached a steel first collar 14 which defines a first opening 16.
  • First collar 14 is welded by annular weld line 18 to the remainder of tank wall 12.
  • Tank 10 carries an inner plastic liner 20 made of polyvinyl chloride plastic or the like. At the upper end of said plastic liner 20 there is an aperture 21, with an annular section 22 of plastic liner 20 being firmly sealed to second collar 24 by R.F. sealing or the like. Second collar 24 may be made of rigid polyvinyl chloride, as is desirable in such a circumstance to promote sealing compatibility. Second collar 24 fits within first collar 14 in telescoping relation so that a portion of second collar 24 is surrounded by first collar 14.
  • Second collar 24 defines, in this embodiment, three outwardly projecting locking flanges 26. As shown in Fig. 2, locking flanges 26 are spaced from each other by spaces that are of typically slightly larger circumferential angle than the circumferential angle of each locking flange 26.
  • First collar 14 in turn, defines three inwardly projecting, spaced locking flanges 28.
  • Each of the locking flanges 26, 28 are proportioned and spaced so that they can fit between each other, as particularly shown in Fig. 2, when the first and second collars 14, 24 are moved axially with respect to each other.
  • the respective collars can be placed into a position as illustrated in Fig. 1 and also Fig. 3 by passing through the configuration of Fig. 2, and then relatively rotating first and second collars 14, 24 to the position of Figs. 1 and 3 where the respective locking flanges 26, 28 are placed in rotationally interlocking relation, to retain the respective collars 14, 24 together in axially locked relation.
  • Second collar 24 also defines an annular, outwardly projecting flange 30, which carries an O-ring 32.
  • O-ring 32 the junction area between the respective collars 14, 24 is sealed by the presence of O-ring 32.
  • O-ring 32 may be inserted, to prevent migration of air back into the junction area between wall 12 and liner 20.
  • threaded nut 34 may be applied to external threads 36 of collar 24.
  • the nut member is rotated downwardly until its flange 38 abuts an annular shoulder 40 of first collar 14, generating upward pressure on second collar 24 relative to first collar 14. This causes a load to be developed between the respective locking flanges 26, 28 for improved sealing and retention of the system.
  • Nut 34 may abut the shoulder 40 of first collar 14 through a shroud or cover 42, which may be made of sheet steel or the like, to protect the upper portion of the tank, as shown in Fig. 1.
  • Shroud 42 also carries a lower annular seal member 44, which seals against the tank wall 12.
  • the tank lining system is provided with relatively simple construction, with the flexible tank liner carrying second collar 24 in sealed relation, so that the respective first and second collars are easily locked together and sealed without the complexities required in the prior art.
  • Second collar 24 also defines internal threads 46 in aperture 21, for attachment to a conventional adaptor.
  • one or more ports 46' may be formed in the wall 12 of the tank, to facilitate the bleeding of air bubbles from between the respective members 12, 20. Then, when the process is finished, port or ports 46' may be closed with a sealant or the like, as shown in Fig. 1. This may be used in conjunction with draining air through the junction area between first and second collars 14, 24, or it may be used as a substitute for that technique.
  • Shroud 58 provides external protection and provides the system with an aesthetic look.
  • a simplified tank liner system which is easier to install and which exhibits excellent durability and useful life.
  • the flexible liner 20 is simply inserted into the mouth of the tank. The respective collars are secured together.
  • the tank system is pressurized, or filled with water, to force the liner into intimate relation with the tank wall, and the system can be closed up and ready for years of useful life.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Moulding By Coating Moulds (AREA)
  • Packages (AREA)
  • Coating Apparatus (AREA)

Claims (8)

  1. Réservoir (10) comprenant une paroi (12) définissant une première ouverture (16); un chemisage en feuille souple (20) aboutant la surface intérieure de ladite paroi (12) et définissant une seconde ouverture (21) alignée avec la première ouverture (16); un premier collier (14) entourant ladite première ouverture (16); un second collier (24) entourant ladite seconde ouverture (21) et fixé audit chemisage en feuille souple (20); et un moyen (26.28) pour maintenir ensemble lesdits premier et second colliers, caractérisé en ce que le premier collier (14) est fixé à la paroi de réservoir (12) et entoure et est espacé d'au moins une partie du second collier (24) et un joint torique séparé du type à compression non directe est fourni, le joint torique (32) étant insérable dans l'espace entre les colliers (14,24) pour former un joint étanche dans la zone de jonction entre les colliers (14,24)
  2. Réservoir selon la revendication 1, dans lequel lesdits premier collier (14) et paroi de réservoir (12) sont chacun en métal, le chemisage en feuille souple (20) et le second collier (24) étant chacun en matériaux plastiques qui sont compatibles au niveau de l'étanchéité l'un avec l'autre.
  3. Réservoir selon la revendication 1 ou 2, dans lequel ledit moyen de maintien comprend une partie du premier collier (14) qui définit des premiers moyens de brides de verrouillage espacées, avancant vers l'intérieur (28), et une partie dudit second collier (24) qui définit des moyens de brides de verrouillage espacées, avançant vers l'extérieur (26) qui sont proportionnées pour passer à travers et s'interverrouiller rotativement avec lesdits premiers moyens de brides de verrouillage (28) pour entraîner le verrouillage axial desdits premier et second colliers (14,24) ensemble.
  4. Réservoir selon la revendication 3, ayant un écrou (34) connecté par filetage audit second collier (24) et aboutant ledit premier collier (14) pour forcer, à la rotation dudit écrou (34), lesdits premier et second moyens de brides de verrouillage (26,28) en une relation chargée axialement.
  5. Réservoir selon l'une quelconque des revendications 1 à 4, dans lequel lesdits premier et second colliers sont boulonnés ensemble.
  6. Réservoir selon l'une quelconque des revendications précédentes, dans lequel ledit second collier (24) définit une bride de support (30) qui porte le joint torique.
  7. Procédé d'étanchéification du réservoir selon la revendication 1 en utilisant le joint torique (32) de la revendication 1, comprenant (a) l'évacuation d'air de l'espace entre la surface intérieure de ladite paroi de réservoir (12) et ledit chemisage en feuille souple (20) pour forcer le chemisage en feuille souple (20) à entrer en contact intime avec la surface intérieure de la paroi (12), l'air étant évacué dudit espace et entre le premier collier (14) et le second collier (24), et (b) le placement dudit joint torique (32) du type à compression non directe à la jonction entre lesdits premier et second colliers (14,24) de manière à produire un joint étanche entre lesdits colliers (14,24), empêchant ainsi le passage d'air dans l'espace entre la paroi de réservoir (12) et le chemisage en feuille (20).
  8. Procédé selon la revendication 7, comprenant en outre l'opération de placement (c) d'un écrou (34) par dessus lesdits premier et second colliers (14,24) et le joint torique (32).
EP92303278A 1991-04-25 1992-04-13 Système de revêtement pour réservoir avec col scellé Expired - Lifetime EP0510853B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US69156491A 1991-04-25 1991-04-25
US691564 1991-04-25

Publications (3)

Publication Number Publication Date
EP0510853A2 EP0510853A2 (fr) 1992-10-28
EP0510853A3 EP0510853A3 (en) 1993-02-03
EP0510853B1 true EP0510853B1 (fr) 1994-11-02

Family

ID=24777041

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92303278A Expired - Lifetime EP0510853B1 (fr) 1991-04-25 1992-04-13 Système de revêtement pour réservoir avec col scellé

Country Status (6)

Country Link
EP (1) EP0510853B1 (fr)
AT (1) ATE113558T1 (fr)
AU (1) AU652240B2 (fr)
CA (1) CA2065757C (fr)
DE (1) DE69200606T2 (fr)
ES (1) ES2066558T3 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4418715A1 (de) * 1993-06-03 1994-12-08 Duttenhoefer Gmbh Gottlieb Verpackungsverschluß einer mehrfach kombinierbaren Gefahrgutverpackung
US6510959B1 (en) * 2000-04-18 2003-01-28 United States Filter Corporation Center opening treatment tank for use with metal tank flanges

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB890170A (en) * 1959-12-11 1962-02-28 Lancastrian Evaporators Ltd Improvements relating to the bulk storage of sterilised liquids
GB1000634A (en) * 1962-11-15 1965-08-11 Leer Ind Ltd Van Container for the packaging, the storage and the transportation of goods
US3918605A (en) * 1974-04-15 1975-11-11 Calvin J Butler Combination container with disposable closure and linear assembly
NL165429C (nl) * 1975-02-10 1981-04-15 Ruiten S Transporten B V Van Vulhulpstuk voor een tijdelijke binnenbekleding van een tank, alsmede werkwijze voor het monteren van een transportzak in een tank met behulp van een vulhulpstuk en transportzak met vulhulpstuk voor een tank
US4164304A (en) * 1978-05-30 1979-08-14 The Continental Group, Inc. Closure for steel drums with blow molded liners
US4537329A (en) * 1984-04-02 1985-08-27 Culligan International Company Tank lining system

Also Published As

Publication number Publication date
EP0510853A2 (fr) 1992-10-28
AU652240B2 (en) 1994-08-18
AU1512792A (en) 1992-10-29
DE69200606T2 (de) 1995-05-04
ATE113558T1 (de) 1994-11-15
ES2066558T3 (es) 1995-03-01
CA2065757C (fr) 1996-04-02
DE69200606D1 (de) 1994-12-08
CA2065757A1 (fr) 1992-10-26
EP0510853A3 (en) 1993-02-03

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