EP2957526A1 - Habillage interieur de citerne et son procede de fabrication - Google Patents

Habillage interieur de citerne et son procede de fabrication Download PDF

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Publication number
EP2957526A1
EP2957526A1 EP15172669.2A EP15172669A EP2957526A1 EP 2957526 A1 EP2957526 A1 EP 2957526A1 EP 15172669 A EP15172669 A EP 15172669A EP 2957526 A1 EP2957526 A1 EP 2957526A1
Authority
EP
European Patent Office
Prior art keywords
tank
shell
layer
ableitschicht
interior
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.)
Granted
Application number
EP15172669.2A
Other languages
German (de)
English (en)
Other versions
EP2957526B1 (fr
Inventor
Jörn Von Bornstädt
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.)
Fenotec Protec GmbH
Original Assignee
Fenotec Protec GmbH
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
Priority claimed from DE202014004902.5U external-priority patent/DE202014004902U1/de
Application filed by Fenotec Protec GmbH filed Critical Fenotec Protec GmbH
Publication of EP2957526A1 publication Critical patent/EP2957526A1/fr
Application granted granted Critical
Publication of EP2957526B1 publication Critical patent/EP2957526B1/fr
Active legal-status Critical Current
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
    • B65D90/22—Safety features
    • B65D90/46—Arrangements for carrying off, or preventing the formation of electrostatic charges
    • 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
    • B65D90/022—Laminated 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
    • B65D90/04—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
    • B65D2590/00—Component parts, details or accessories for large containers
    • B65D2590/02—Wall construction
    • B65D2590/04—Linings
    • B65D2590/043—Flexible liners
    • B65D2590/046—Bladders

Definitions

  • the disclosure relates to a tank liner and a method of manufacturing a tank liner.
  • An inner tank shell is made according to the dimensions of a tank made of plastic sheets. It is used to equip the tank with a second wall. For this purpose, an intermediate layer is initially installed in the tank, such as fleece. This fleece also conducts air under pressure. Thereafter, the shell is installed in the tank. It is held by a vacuum on the tank wall, regardless of the level of the tank. The system is monitored by a leak detector. If a leak occurs, the leak detector detects this by changing the pressure and an alarm is triggered.
  • Tank inner sheaths are usually intended for the renovation of existing tanks.
  • the tank inner shell should be earthed and have a surface resistance of less than 10 9 ⁇ (measured at 23 ° C and 50% relative humidity) have.
  • the document EP 0 014 491 A1 discloses a double-walled container for storing combustible media.
  • a metallic wire mesh is truncated.
  • the task is to specify improved technologies for lining a tank.
  • tank liner according to claim 1 There are disclosed a tank liner according to claim 1 and a method of manufacturing a tank liner according to claim 13.
  • a tank liner is provided with a shell.
  • the shell surrounds an interior space for receiving a fluid.
  • a discharge layer which has an electrically conductive material, is arranged on a surface of the casing.
  • a method of manufacturing a tank inner shell comprises: providing a shell having an interior for receiving a fluid and applying a drainage layer to at least a portion of a surface of the shell.
  • the Ableit Mrs has an electrically conductive material.
  • the fluid may be a gas or a liquid, for example a fuel such as gasoline, diesel, bio-diesel or ethanol.
  • the tank liner may be used to line a tank, such as a fuel tank.
  • the tank can have a cylindrical shape.
  • the tank can be a steel tank.
  • the tank can have a capacity of 3,000 l to 100,000 l.
  • the envelope can be used for flexible fuel tanks used in Formula 1 or in aircraft. Such tanks are much smaller than the storage tanks, for example, at gas stations.
  • the flexible tank can have a capacity of 100 l to 1,000 l.
  • the flexible fuel tank can be made of a flexible material that is welded, glued or vulcanized from webs. On the tracks can later be applied externally a conductive layer.
  • the advantages are similar to a tank inner shell for a cylindrical tank.
  • the envelope (eg, foil) for the flexible tank may be self-supporting or supported on existing structures - for example, on the wing of an aircraft on the structures of
  • the sheath may consist of a foil or a coated fabric. There may be several material sections connected to the shell. In that case, the sleeve may be composed of seams with seams.
  • the film or the coated fabric may consist of a plastic, in which any barrier layers are involved.
  • the electrical conductivity of the dissipation layer can be increased by the addition of additives.
  • the dissipation layer may contain carbon black, graphite and / or nanotubes.
  • the shell may be formed in multiple layers. Between two plastic layers (e.g., film webs) a barrier layer may be disposed.
  • the dissipative layer can be dissipative. It is capable of dissipating a substance or material with a resistivity of more than 10 4 ⁇ m and less than 10 9 ⁇ m.
  • the resistivity is the electrical resistance of a substance or material measured on a sample of the unit length and the unit cross-sectional area.
  • Dissipative substances or articles and equipment made of dissipative materials do not store electrical charge when in contact with earth.
  • the surface resistance is the electrical resistance measured on the surface of an object. It is measured between two parallel electrodes of small width and each 100 mm in length, which are 10 mm apart and in contact with the surface to be measured. The measuring voltage is 100 V. As the humidity in the air sinks, the surface resistance generally increases considerably (see Technical Rules for Operational Safety, TRBS 2153, "Prevention of ignition hazards due to electrostatic charges", GMBl No. 15/16 of 9 April 2009, p. 278 ).
  • the discharge layer may be arranged on a surface of the casing facing away from the interior.
  • the interior of the surface facing away from the shell is also referred to as the outside.
  • the Ableit Mrs on the outside of the shell has the Advantage that the discharge layer is not directly exposed to the fluid - for example, gasoline. As a result, the fluid can not easily attack the Ableit Mrs and z. For example, rinse the layer, soften or possibly soften welds of the layer. Furthermore, a material, for example a film, which can be produced more cheaply can be used for the casing. If the Ableit Mrs applied after the production of the shell, this has the advantage that, for example, high-frequency welding process for the production of the tank lining is available.
  • the arrester layer disposed on the outside of the envelope may have a surface resistance of less than 10 9 ⁇ or less than 10 8 ⁇ , measured at 23 ° C and 50% relative humidity. The dissipation layer can be firmly connected to the shell.
  • the shell may be made of one or more flexible materials.
  • the casing may be formed from a plurality of film webs welded together, wherein the discharge layer is applied at least in sections to the film webs.
  • the Ableit harsh can be arranged on welds of the film webs.
  • the casing is first completely manufactured, for example by welding a plurality of film webs.
  • the Ableit Mrs can be applied at least in sections on the outside of the finished casing, for example in the form of a lacquer. If the Ableit Mrs is used up on individual film webs, for example by laminating, these film webs may be harder to work and the welds may not be so stable.
  • the dissipative layer can substantially completely cover the surface of the sheath. It can be provided that the outside of the shell is completely covered by the Ableit Mrs.
  • the dissipative layer can be formed with a conductive nonwoven, a lacquer or a coating.
  • a fleece is usually installed as an intermediate layer between the shell and the tank.
  • the shell may be made of a non-conductive material.
  • the conductive additives in films can limit their gasoline resistance. If one waives these additives, the costs for the sometimes very expensive additives are saved.
  • it is also easier to access standard foils because not all film manufacturers can produce conductive foils or such conductive additives can not be processed with all production systems.
  • the shell is coated from the outside with a conductive lacquer (eg with surface resistance of at least 10 8 ⁇ , measured at 23 ° C and 50% relative humidity).
  • a conductive lacquer eg with surface resistance of at least 10 8 ⁇ , measured at 23 ° C and 50% relative humidity.
  • high-frequency welding can be used, which usually work only limited when welding conductive film webs.
  • the coating or coating is applied to the outside, whereby it is not exposed to the medium inside the shell. There it could be attacked by abrasion as a result of flow of the liquid as well as by the action of the liquid on the coating, which may possibly lead to the release of the coating.
  • the drainage layer can be earthed via the dome by screwing it to the shell on the dome, ie with the outside (conductive side) resting on the dome of the tank or being pressed against it.
  • the Ableit Mrs can be applied, for example, during production on the outside of the shell, for example, be glued.
  • B. a dissipative nonwoven is glued, or in another production process z. As by lamination (with surface resistance of at least 10 8 ⁇ - measured at 23 ° C and 50% relative humidity). In this case, a film is processed to a tank inner lining, which already has a conductive outer layer.
  • the film of the shell may be produced such that one side of the film is formed with one or more barrier layers and the film is conductively formed by an additive. This side of the film is then taken into account in the production of the inner lining and welded so that the Innauspronounced is completely conductive on the outside, ie the conductive Side is arranged outside and possibly electrically connected to an additional layer after welding, for example by applying a lacquer layer.
  • the entire film is provided conductive except the barrier layer or the barrier layers. Then, in the production of the inner lining, it is not necessary to pay attention to which side of the film is conductive. It can be ensured that the entire conductive surfaces can be grounded, for example, over the dome of the tank. This can be achieved by the arrangement of the film webs.
  • the film webs can each run towards the dished bottom and are then arranged on the dished bottom in such a way that all film webs that run longitudinally through the tank (in each case with the length of the tank) are connected to one another on the inner lining on the outside.
  • the discharge layer may be arranged at least in sections on a surface of the casing facing the interior.
  • the interior facing surface of the shell is also referred to as the inside.
  • the dissipation layer can be arranged in a bottom region of the envelope.
  • the dissipative layer can be arranged in the bottom region on the inside of the casing, such that regions of the inside located above the bottom region are free of an electrically conductive material.
  • an upper half of the shell may be free of an electrically conductive material.
  • the dissipation layer may have a surface resistance of less than 10 6 ⁇ . About the material of the Ableit Anlagen electrical charges in the fluid, resulting for example during filling, are derived.
  • the dissipation layer may be formed with one or more strips of the electrically conductive material.
  • the strip (s) may extend the length of the shell.
  • the statements on the arresting layer apply analogously.
  • the further dissipative layer can be applied as a lacquer layer on the inside of the envelope.
  • a film web with a width of at least 15 cm and a conductivity (surface resistance) of 10 6 ⁇ in the lower fifth of the tank and over the entire cylindrical length of the tank can be placed on the existing tank inner shell.
  • the film web can be welded, for example, to the shell.
  • the film web should not be located exactly at the lowest point.
  • the material of the film web may be such that the web is thermally welded to the tank inner shell.
  • the film web can then be guided upwards via a dished bottom of the tank or via side walls of the tank in the area of the dome and, for example, grounded via the dome or the tank.
  • a drainage layer is arranged at least in sections on the inside and the outside of the shell.
  • the dissipation layers may be formed of the same or different materials.
  • a flexible material with a diameter of at least 4 mm and an electrical conductivity of 10 6 ⁇ in the interior of the shell in the lower fifth of the tank can be arranged. It can be guided over the entire bottom of the shell and fastened there, for example with tabs. The flexible material should not be in the lowest area. Then the material, such as a plastic tape, can be led over the dished bottom or over the wall to the dome of the tank and grounded there.
  • a tube can run parallel to the tank bottom in the interior of the shell in the lower sixth of the tank over the entire length of the tank and protrude into the tank. It can also be stabilized by supports on the bottom of the tank so that it is not self-supporting over the entire tank length.
  • the tube can be attached to a filling line and be discharged over it.
  • another tube from the tank lid may hold the conductive tube above the bottom of the tank and drain it over the dome lid.
  • a flexible material with a diameter of at least 4 mm and an electrical conductivity of 10 6 ⁇ on the side of the tank may be attached, the Dom facing away.
  • This may be, for example, a rope which is fastened to the dome in such a way that, for example, it can divert stresses via the dome into the tank.
  • a pipe or a flexible material can always be kept at a substantially same height in the tank by means of a float. In this case, too, it can then be earthed, for example, via the dome.
  • a cable flexible material
  • a rope can be dispensed with arranging the Ableit harsh on the surface of the shell.
  • the shell without Ableit Mrs forms the tank inner lining.
  • the material in the interior can provide.
  • the drainage layer may be grounded, for example at the dome of the tank.
  • the film webs of the shell may be arranged in the tank such that the conductive layer can be earthed at one point, for example at the dome.
  • a thickness of the shell may be less than 2 mm.
  • the dissipative layer may be welded or glued to the envelope.
  • tank liner can also be used for the manufacturing process and vice versa.
  • Fig. 1 shows the construction of an inner lining in a tank according to the prior art.
  • a dome 17 is welded with a flange to which a cover 18 can be screwed.
  • an intermediate layer 14 of a possibly conductive and air-permeable material (eg with a surface resistance of at least 10 9 ⁇ -measured at 23 ° C and 50% relative humidity) and on the inside of the liner a flexible inner lining 13 at ,
  • the intermediate layer is usually replaced by a layer of sponge rubber or the like (not shown), so that the space between the inner liner 13 and the tank wall 15 is sealed upwards.
  • This layer also serves as a support for a clamping ring 16, with which the inner lining 13 is firmly clamped in the dome 17.
  • the clamping ring 16 may be a V-shaped clamping ring with round cord.
  • Fig. 2 shows the construction of a multilayer inner lining 5.
  • an electrically conductive layer 12 is arranged, for example made of a dissipative material.
  • a further film layer 10 (made of the same or a different plastic as film layer 6) and a further electrically conductive layer 11 are formed.
  • the further electrically conductive layer 11 may be made of the same material or a different material as the electrically conductive layer 12.
  • Fig. 3 shows a further embodiment on the inside of the inner lining 13, an electrically conductive strip 20 is arranged, for example, welded.
  • the strip 20 is arranged in the bottom region 21 of the tank 15 and extends over the length of the tank 15.
  • the strip is earthed at the dome 17.
  • Fig. 4 shows an embodiment in which a cable 22 is secured by means of holders 23 at the bottom of the tank 15.
  • the cable 22 is made of an electrically conductive material.
  • the cable is earthed at the Dom 17.
  • the cable 22 extends over the entire length of the tank 15.
  • the holder 23 may be arranged at regular intervals from each other.
  • a tank 15 with a conductive arrester 25 is shown.
  • the arrester 25 is attached to a suction line 24, which is earthed at the dome 17.
  • Fig. 6 shows a tank 15 with a trap 25 which is grounded at the dome 17.
  • Fig. 7 shows a tank 15 with a conductive rope 26.
  • the rope 26 is in contact with the bottom of the inner liner at one point.
  • the rope is earthed at Dom 17.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)
EP15172669.2A 2014-06-18 2015-06-18 Habillage interieur de citerne et son procede de fabrication Active EP2957526B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202014004902.5U DE202014004902U1 (de) 2014-06-18 2014-06-18 Elektrische Ableitung in Tankinnenhüllen für Benzin
DE202014007729 2014-09-25

Publications (2)

Publication Number Publication Date
EP2957526A1 true EP2957526A1 (fr) 2015-12-23
EP2957526B1 EP2957526B1 (fr) 2017-08-16

Family

ID=53510606

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15172669.2A Active EP2957526B1 (fr) 2014-06-18 2015-06-18 Habillage interieur de citerne et son procede de fabrication

Country Status (1)

Country Link
EP (1) EP2957526B1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1524423A (en) * 1922-06-03 1925-01-27 William H Chapman Device for discharging electricity from gasoline tanks and the like
DE2358198A1 (de) * 1973-11-22 1975-05-28 Basf Ag Verfahren zum elektrisch leitenden verbinden von gfk-teilen
EP0014491A1 (fr) 1979-01-19 1980-08-20 Borsari & Co. Récipient à double paroi protégé contre la corrosion et l'explosion et procédé de fabrication dudit récipient
DE9109544U1 (fr) * 1991-08-01 1991-12-05 Tuma, Josef, 8013 Gronsdorf, De
EP0758620A1 (fr) * 1995-08-14 1997-02-19 Wülfing + Hauck GmbH + Co. KG Garniture intérieure pour réservoirspour liquides en particulier essence et réservoir fabriqué avec celle-là

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1524423A (en) * 1922-06-03 1925-01-27 William H Chapman Device for discharging electricity from gasoline tanks and the like
DE2358198A1 (de) * 1973-11-22 1975-05-28 Basf Ag Verfahren zum elektrisch leitenden verbinden von gfk-teilen
EP0014491A1 (fr) 1979-01-19 1980-08-20 Borsari & Co. Récipient à double paroi protégé contre la corrosion et l'explosion et procédé de fabrication dudit récipient
DE9109544U1 (fr) * 1991-08-01 1991-12-05 Tuma, Josef, 8013 Gronsdorf, De
EP0758620A1 (fr) * 1995-08-14 1997-02-19 Wülfing + Hauck GmbH + Co. KG Garniture intérieure pour réservoirspour liquides en particulier essence et réservoir fabriqué avec celle-là

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"Vermeidung von Zündgefahren infolge elektrostatischer Aufladungen", TECHNISCHE REGELN FÜR BETRIEBSSICHERHEIT, TRBS 2153, 9 April 2009 (2009-04-09), pages 278

Also Published As

Publication number Publication date
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