EP0913341B1 - Garniture intérieure pour réservoirs pour liquides en particulier essence et procédé pour la fabriquer - Google Patents

Garniture intérieure pour réservoirs pour liquides en particulier essence et procédé pour la fabriquer Download PDF

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Publication number
EP0913341B1
EP0913341B1 EP98120183A EP98120183A EP0913341B1 EP 0913341 B1 EP0913341 B1 EP 0913341B1 EP 98120183 A EP98120183 A EP 98120183A EP 98120183 A EP98120183 A EP 98120183A EP 0913341 B1 EP0913341 B1 EP 0913341B1
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EP
European Patent Office
Prior art keywords
electrically conductive
liquid
portions
inner lining
seam
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
EP98120183A
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German (de)
English (en)
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EP0913341A2 (fr
EP0913341A3 (fr
Inventor
Erich Hauck
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.)
Wuelfing und Hauck GmbH and Co KG
Original Assignee
Wuelfing und Hauck GmbH and Co KG
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.)
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Publication date
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Publication of EP0913341A2 publication Critical patent/EP0913341A2/fr
Publication of EP0913341A3 publication Critical patent/EP0913341A3/fr
Application granted granted Critical
Publication of EP0913341B1 publication Critical patent/EP0913341B1/fr
Anticipated expiration legal-status Critical
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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
    • 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
    • B65D90/22—Safety features
    • B65D90/46—Arrangements for carrying off, or preventing the formation of electrostatic charges

Definitions

  • the invention relates to an inner lining according to the preamble of claim 1. a double-walled liquid tank produced with their help and a method for Production of the lining.
  • Inner linings are supposed to absorb petrol or kerosene required that the inside of the liquid coming into contact with it is sufficient are antistatic to prevent electrical charges and therefore the risk of explosions to avoid. Dangers of this kind exist especially when you commit one with tanks provided with such a lining, since this creates sparks from frictional electricity can form.
  • an inner lining of the type mentioned become (DE 196 21 469 A1), the inner shell of which faces the tank wall A diffusion-proof layer on the outside and on its side facing the tank interior Side has an electrically conductive layer.
  • the inner shell preferably consists of an electrically non-conductive base material, e.g. a thermoplastic polyurethane ester or fluoroplastic film with an electrically conductive inside Polyaniline or soot layer is covered.
  • the application of this electrically conductive layer can e.g. by duplicating or applying a dispersion by doctor blade.
  • the invention has for its object the inner lining of the above Form genus so that it has a sufficient conductivity throughout and the welds have good durability.
  • a dome 2 In the upper end of a substantially cylindrical fuel tank 1 of conventional construction a dome 2 is welded with a flange 3 to which a cover 4 is screwed can be.
  • An intermediate layer 5 is present on the inner wall of the petrol tank 1 an electrically conductive, air-permeable material and a flexible inside Inner cover 6.
  • the intermediate layer 5 In the upper part of the dome 2, the intermediate layer 5 is usually through replaced a layer of foam rubber or the like, so that the space between the inner shell 6 and tank wall is sealed upwards.
  • This layer also serves as Support for a clamping ring 7, by means of which the inner shell 6 is firmly clamped in the dome 2 becomes.
  • a tubular angle piece not shown used, one end of which in a between the tank wall and intermediate layer 5 formed, enlarged space protrudes, which e.g. from one on the contra-angle attached cover plate is formed.
  • One is closed at the free end of the contra-angle a conventional leak detection device leading measuring line for measuring a vacuum connected between the tank wall and the inner shell 6.
  • the gasoline-resistant inner shell 6 in FIG. 2 has on its the Intermediate layer 5 facing outer side on a diffusion-tight layer 6a is resistant to the liquid to be stored, in particular gasoline. this part the inner shell 6 thus ensures the required tightness and durability.
  • a diffusion-tight layer 6a is resistant to the liquid to be stored, in particular gasoline.
  • the inner shell 6 thus ensures the required tightness and durability.
  • On the other hand shows the inner shell 6 on the inside of the tank and with the liquid a layer 6b which also comes into contact immediately on the inside is resistant to petrol and also has sufficient electrical conductivity.
  • This Layer 6b is expediently or by means of an electrically conductive tab made of a metal. Like. Connected, which is led to the outside via the cathedral 2 and grounded there. If necessary the layer 6b on its inside can also be used to improve the grounding Tab connected strips of conductive material. Layer 6b prevents electrical charges and sparking inside the tank 1.
  • the two-layer inner shell 6 is e.g. made by duplicating from two foils, one of which the properties of layer 6a and the other the properties of Layer 6b has. It is common under "duplication" in plastics technology understood that the two films using pressure and heat with the help of Presses or calenders are brought together so that they form an intimate bond received.
  • a basic material in the form of a transparent, carrier-free, extruded film made of a thermoplastic Polyurethane with a thickness of 600 ⁇ ⁇ 10% for layer 6a by duplicating with e.g. 150 ⁇ thick polyurethane ester film is connected, which has been made electrically conductive by the addition of carbon black.
  • the surface with a layer 6b of electrical conductive polyaniline or carbon black is provided.
  • This layer 6b is e.g. in form of a Polyaniline dispersion in a so-called UV binding lacquer that can be hardened with UV light Squeegees applied and then hardened with UV light.
  • it can be a Act as a dispersion of carbon black in water, e.g. is applied by squeegees.
  • Inner linings of this type are generally known and therefore do not need further details to be explained (DE 69 37 614 U1, DE 76 17 733 U1).
  • the inner casing 6 For lining the gas tank 1 shown in FIG. 1, it is common for the inner casing 6 to be completely prefabricated or prefabricated by cutting from the finished one Foil material made according to the shape and size of the fuel tank 1 and then through welding processes, as are common in plastics technology get connected.
  • the finished inner shell 6 then has essentially the same shape like the tank 1 in which it is to be used.
  • FIG. 3 different blanks of the inner shell 6 are shown schematically.
  • Longitudinal tracks 8a to 8d are provided, each with one at their longitudinal edges
  • Weld 9 are connected to each other by two edge sections along one e.g. 20 mm wide strips overlap and then by hot wedge welding be connected to each other. The welding takes place in such a way that initially results in a substantially rectangular tarp that contains all the longitudinal tracks 8a to 8d.
  • 3 are two substantially circular end faces 10a, 10b Inner shell 6 can be seen, the end face 10a is shown in a state that after cutting and welding correspondingly shaped sheets 11a, 11b results. In contrast, the end face 10b is provided with a strip of material 12 on its peripheral edge connected.
  • the parts 10b and 12 are connected e.g. by High frequency welding.
  • connection of the end faces 10a, 10b with that formed from the longitudinal tracks 8a to 8d Tarpaulin is e.g. in that the latter first through at both ends Hot wedge welding along a weld seam 14 with the still free part of the material strip 12 is connected in a ring.
  • the tarpaulin or the entire inner shell is afterwards only along a longitudinal seam extending between the two end faces 10a, 10b open, which finally e.g. also in overlapped form by hot wedge welding is closed.
  • a special section 15 with a dome neck 16 desired then this can be worked into the tarpaulin like one of the sections 8a to 8d become.
  • FIGS. 4 and 5 The production method described results in two types of Weld seams, which are schematically shown enlarged in FIGS. 4 and 5, with FIG. 4 the weld seam 9 between the two longitudinal tracks 8c, 8d and FIG. 5 the weld connection between the end face 10b and the remaining tarpaulin.
  • the longitudinal sections 8c and 8d each have one with the conductive layer 6b provided inside 17 and 18 and a non-conductive outside 19 and 20 respectively. So that there is evenly good conductivity in the area of the weld 9 and no interruption caused by the overlap of the two longitudinal sections 8c, 8d occurs between the layers 6b, these are according to the invention at least one additionally formed, electrically conductive bridge 21 with one another connected. Preferably, there are several such in the longitudinal direction of the weld 9 Bridges 21 attached, for example at intervals of 50 cm to 100 cm.
  • the bridges 21 are produced, for example, in that the inner surfaces 17, 18 of the two Longitudinal tracks 8c, 8d by dot or strip application of a conductive soot or Polyaniline lacquer can be conductively connected to one another. It is particularly advantageous to attach the bridges along all existing longitudinal and / or round seams and train continuously or continuously over their entire length.
  • Soot or polyaniline varnish preferably from a liquid or pasty, curable Dispersion of carbon black or polyaniline in an organic binder or solvent, e.g. a synthetic resin, so that the bridge material a closed, in all free corners and scoring the seams 9 forms penetrating layer 21a.
  • an organic binder or solvent e.g. a synthetic resin
  • bridges 21 formed in the lacquer can have a diameter or a width of e.g. Have 40 mm to 60 mm and are dried after application or with UV light or the like. Hardened. After drying out, the bridges 21 form a solid one Part of the lining, which ensures that even when attaching transverse and longitudinal welds no zones on the inside of the inner shell 6 can occur that are not conductively connected to a neighboring zone. Therefore the inside of the inner shell 6 at any point with one through the dome section 16 to the outside of the cathedral or to ground (earth), then it is automatic the entire inside of the inner shell 6 is grounded.
  • FIG. 5 In the area of the end faces 10a, 10b (FIG. 5), two likewise border on their inner sides 23, 24 sections 25, 26 of the inner shell 6 provided with conductive layers 6b, in FIG. 5 the one section 25 is part of the end face 10b according to FIGS. 3 and section 26 is part of the tarpaulin discussed above.
  • Fig. 4 limit these sections 25, 26 but along a butt joint 27 to each other, the outer sides 28,29 of the sections 25, 26 through each along a weld 30, 31 on them attached material strips 12 are connected to each other in the area of the connection points is bent by approx. 90 °.
  • Bridges 32 attached that conductively connect the two inner surfaces 23, 24 together. These bridges 32 are also useful by brushing the seams with a Soot or polyaniline varnish formed.
  • the electrically conductive Coating in those edge sections in which weld seams come to lie either omit it completely or remove it before the welding process.
  • Such as. 4 shows, there is one when welding the longitudinal sections 8c, 8d strip-shaped zone 33, in which the uncoated outer side 19 of the section 8c rests on the coated inside 18. Is one of the two coming into contact Areas with a soot or polyaniline layer or the like. provided, they seem Not holding weld seams sufficiently well or not remaining permanently sealed, especially when the gasoline or the like. Small amounts of alcohol or the like. added become. If the areas coming into contact within this zone 33 on the other hand, solely from the basic material, e.g. a thermoplastic polyurethane, then good welding is possible with the means known from plastics technology. In addition, it has been shown that such weld seams are also resistant to gasoline for a sufficiently long time and stay tight. There is also the significant advantage that no penetration within zones 33 when welding with high frequency or the like may occur.
  • the basic material e.g. a thermoplastic polyurethane
  • the different sections 8a to 8d, 10a, 10b in the factory produce that the edge portions coming to overlap in FIGS. 3 and 4 are free of electrically conductive coatings, since the film material coated on one side Delivered in long lengths in roll form and according to the respective tank shape is cut.
  • it is therefore proposed to cut it and before welding one e.g. 2 cm wide edge section of the longitudinal sections 8a to 8d on the inside of the electrically conductive layer, as in Fig. 4 is indicated in the area of zone 33.
  • layers of soot e.g. chemically by treatment with acetone or mechanically Wiping off with a brush, a grindstone or the like. possible.
  • the Coating e.g. is removed by scraping or scratching.
  • the conductive coatings are mistaken to produce good welds removed to a width which is greater than the width of the weld seams to be produced, then, as shown in FIG. 4, this is harmless.
  • the retrofitted bridges 21 can easily be attached and so wide that they can also be next to the Weld seams cover 9 remaining, non-conductive zones and thereby all Connect conductive layers 6b of the inner shell 6 to one another in a conductive manner.
  • welds are then preferably on their inside with a continuous circumferential bridge 35 made of an electrically conductive material, e.g. is sprayed on.
  • the bridges 21, 32 and 35 are expediently applied during production the inner shell.
  • the bridges 21 (Fig. 4) after completion of the tarpaulin are attached while the bridges 32, 35 (Fig. 5, 6) expediently continuously be attached during the connection of the sections 25, 26 as long as the last one Longitudinal seam in the area of the tarpaulin is still open. Will this longitudinal seam through later Hot wedge welding or the like closed, can also point or from the inside strip-shaped bridges made of the bridge material are attached.
  • the invention is not limited to the exemplary embodiments described, which are based on can be modified in many ways.
  • aqueous dispersions e.g. those with soot, the advantage that they can also be easily applied with a spray gun or the like can.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Laminated Bodies (AREA)
  • Coating Apparatus (AREA)
  • Loading And Unloading Of Fuel Tanks Or Ships (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Claims (13)

  1. Garniture intérieure pour cuves pour liquide, en particulier essence, en forme d'une enveloppe intérieure (6) préalablement confectionnée, qui est constituée d'au moins deux sections (8a à 8d, 10a,b 25, 26) assemblées le long d'au moins une soudure (9, 29, 30), qui sont réalisées en un matériau de base non conducteur d'électricité et sont pourvues sur leurs faces intérieures de couches conductrices d'électricité (6b), qui viennent directement en contact avec le liquide, caractérisée en ce que les sections (8a à 8d, 10a,b 25, 26) sont assemblées mécaniquement le long de zones surfaciques (33, 34) placées en chevauchement, exemptes ou dégagées de couches conductrices d'électricité (6b) sur les surfaces de contact et les couches conductrices d'électricité (6b) individuelles venant directement en contact avec le liquide sont assemblées de manière conductrice d'électricité le long de la soudure (9, 29, 30) ainsi formée par au moins un congé (21, 32, 35).
  2. Garniture intérieure selon la revendication 1, caractérisée en ce que le congé (21, 32, 35) est constitué d'une pâte ou d'un liquide réticulé contenant un matériau conducteur d'électricité appliqué après le soudage.
  3. Garniture intérieure selon la revendication 2, caractérisée en ce que le liquide est une laque de noir de carbone ou de polyaniline.
  4. Garniture intérieure selon l'une des revendications 1 à 3, caractérisée en ce que les sections (8a à 8d ; 10a,b ; 25, 26) sont assemblées les unes aux autres par soudage.
  5. Garniture intérieure selon l'une des revendications 1 à 4, caractérisée en ce que la face extérieure de l'enveloppe intérieure (6) ne présente pas de couche conductrice d'électricité et la soudure (9) est formée par soudage le long de zones surfaciques superposées en chevauchement, dont l'une, ne présentant pas de couche conductrice d'électricité, repose sur la face intérieure (18) et l'autre sur la face extérieure (19) de respectivement une section (8c, 8d) correspondante, adjacente à la soudure (9).
  6. Garniture intérieure selon la revendication 5, caractérisée en ce que la couche conductrice d'électricité a été retirée avant la réalisation de la soudure (9) dans la zone surfacique située sur la face intérieure (18).
  7. Garniture intérieure selon l'une des revendications 1 à 3, caractérisée en ce que les deux sections (25, 26) sont adjacentes l'une à l'autre le long d'un joint (27) et sont assemblées l'une à l'autre sur leurs faces extérieures (28, 29) par une bande de matériau (12) qui repose sur respectivement une zone surfacique des deux sections (25, 26) et est assemblée avec celles-ci par respectivement une soudure (30, 31).
  8. Garniture intérieure selon la revendication 7, caractérisée en ce que la bande de matériau (12) sur la face orientée vers les sections (25, 26) ne comporte pas de couche conductrice d'électricité.
  9. Garniture intérieure selon l'une des revendications 1 à 8, caractérisée en ce qu'elle se présente sous forme d'une enveloppe intérieure (6) essentiellement cylindrique, pourvue sur son côté supérieur d'une ouverture pour un dôme (16) et est pourvue, dans la partie cylindrique, de soudures (9) selon l'une des revendications 4 à 6, et sur les faces frontales en revanche de soudures (30, 31) selon la revendication 7 ou 8.
  10. Cuve pour liquide comportant une garniture intérieure, qui présente une enveloppe intérieure (6) comportant une couche conductrice d'électricité (6b) appliquée sur sa face intérieure, caractérisée en ce que l'enveloppe intérieure (6) est conçue selon au moins l'une des revendications 1 à 9.
  11. Procédé de fabrication d'une garniture intérieure pour cuves pour liquide (1), selon l'une ou plusieurs des revendications 1 à 9, caractérisé en ce que l'enveloppe intérieure (6) est constituée d'au moins deux sections (8a à 8d ; 10a,b ; 25, 26) individuelles assemblées le long d'au moins une soudure (9, 29, 30) et en ce que les sections (8a à 8d ; 10a,b ; 25, 26) sont assemblées l'une à l'autre le long de zones surfaciques disposées en chevauchement, avant la réalisation des assemblages des couches conductrices d'électricité (6b) éventuellement présentes sur leurs faces intérieures, venant directement en contact avec le liquide sont retirées des zones de surface et les couches conductrices d'électricité (6b) individuelles venant directement en contact avec le liquide sont pourvues, dans la zone des soudures (9, 2, 30) ainsi formées, de congés (21, 32, 35) en un matériau conducteur d'électricité.
  12. Procédé selon la revendication 11, caractérisé en ce que les congés (21, 32, 35) sont réalisés par application d'une pâte ou d'un liquide conducteur d'électricité.
  13. Procédé selon l'une des revendications 11 et 12, caractérisé en ce que les diverses sections (8a à 8d, 10a,b, 25,26) de l'enveloppe intérieure (6) sont confectionnées et assemblées les unes aux autres en atelier et les congés (21, 32) sont réalisés sur le chantier.
EP98120183A 1997-10-30 1998-10-29 Garniture intérieure pour réservoirs pour liquides en particulier essence et procédé pour la fabriquer Expired - Lifetime EP0913341B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29719210U DE29719210U1 (de) 1997-10-30 1997-10-30 Innenauskleidung für Flüssigkeitstanks, insbesondere Benzintanks, und damit hergestellter Tank
DE29719210U 1997-10-30

Publications (3)

Publication Number Publication Date
EP0913341A2 EP0913341A2 (fr) 1999-05-06
EP0913341A3 EP0913341A3 (fr) 1999-10-27
EP0913341B1 true EP0913341B1 (fr) 2003-03-12

Family

ID=8047901

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98120183A Expired - Lifetime EP0913341B1 (fr) 1997-10-30 1998-10-29 Garniture intérieure pour réservoirs pour liquides en particulier essence et procédé pour la fabriquer

Country Status (6)

Country Link
EP (1) EP0913341B1 (fr)
AT (1) ATE234243T1 (fr)
DE (2) DE29719210U1 (fr)
DK (1) DK0913341T3 (fr)
ES (1) ES2195254T3 (fr)
PT (1) PT913341E (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT12428U1 (de) 2010-10-14 2012-05-15 Ono Oil Gmbh Verfahren zum sanieren eines tanks
DE102011002487A1 (de) 2011-01-07 2012-07-12 Huesker Synthetic Gmbh Auskleidung für Silobehälter eines Silofahrzeugs und Verfahren zum Einbringen und Positionieren einer Auskleidung
AR101452A1 (es) * 2015-08-05 2016-12-21 Martin Zamora Fernando Envase para contenedor de fluidos
JP2018090323A (ja) * 2016-12-01 2018-06-14 サンフロロシステム株式会社 半導体製品の製造用の薬液を流動させる際に薬液と接触する部材

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7617733U1 (fr) 1900-01-01 Wuelfing Und Hauck Kg, 3504 Kaufungen
DE6937614U (de) 1969-09-24 1970-01-08 Wuelfing Und Hauck Spannring zum befestigen von kunststoff-innenhuellen an brennstofftanks
EP0003402A1 (fr) * 1978-01-23 1979-08-08 The British Petroleum Company p.l.c. Laminés renforcés, antistatiques et reliés à la terre, utilisables en tant que barrière contre des fluides inflammables par décharge électrostatique
US4613922A (en) * 1984-01-11 1986-09-23 Neo Vac Aktiengesellschaft Double-grounded wall tank, and method of its manufacture
DE29513086U1 (de) * 1995-08-14 1995-11-16 Wülfing und Hauck GmbH + Co KG, 34260 Kaufungen Innenverkleidung für Flüssigkeits-, insbesondere Benzintanks und damit hergestellter Tank

Also Published As

Publication number Publication date
DK0913341T3 (da) 2003-07-07
EP0913341A2 (fr) 1999-05-06
ES2195254T3 (es) 2003-12-01
DE29719210U1 (de) 1998-06-04
ATE234243T1 (de) 2003-03-15
EP0913341A3 (fr) 1999-10-27
PT913341E (pt) 2003-08-29
DE59807451D1 (de) 2003-04-17

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