EP1339624B1 - Fluid container and means and method for lining the same - Google Patents

Fluid container and means and method for lining the same Download PDF

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Publication number
EP1339624B1
EP1339624B1 EP01986292A EP01986292A EP1339624B1 EP 1339624 B1 EP1339624 B1 EP 1339624B1 EP 01986292 A EP01986292 A EP 01986292A EP 01986292 A EP01986292 A EP 01986292A EP 1339624 B1 EP1339624 B1 EP 1339624B1
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EP
European Patent Office
Prior art keywords
lining
spacer layer
net
container
layer
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
EP01986292A
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German (de)
French (fr)
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EP1339624A1 (en
Inventor
Reiner Stolze
Hans-Ulrich Breitscheidel
Rudolf Kautz
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.)
Ruhr Oel GmbH
Trocellen GmbH
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Ruhr Oel GmbH
Trocellen GmbH
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Publication date
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Publication of EP1339624A1 publication Critical patent/EP1339624A1/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
    • B65D90/00—Component parts, details or accessories for large containers
    • B65D90/48—Arrangements of indicating or measuring devices
    • B65D90/50—Arrangements of indicating or measuring devices of leakage-indicating devices
    • B65D90/501—Arrangements of indicating or measuring devices of leakage-indicating devices comprising hollow spaces within walls
    • B65D90/503—Arrangements of indicating or measuring devices of leakage-indicating devices comprising hollow spaces within walls under pressure or vacuum
    • 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

  • the invention relates to a liquid container with leak monitoring in particular for the storage of water-polluting substances, a liner for a liquid container and a Process for lining a liquid container.
  • liquid container for storage water polluting Substances are, for example, flat-bottomed tanks according to DIN 4119 and other storage containers, such as cylindrical Lagerund Steel container according to DIN 6608-1, used.
  • the one Form monitoring space for leak monitoring In the surveillance room is by a vacuum pump of a leak detector generates a negative pressure. In case of leakage of the liquid container decreases the negative pressure and by a pressure-dependent control alarm can be triggered.
  • CH 561 143 A5 discloses a stationary tank system for liquids with one of two bottom plates and one in between Spacer layer existing ground unit.
  • the spacer layer can also be designed in the form of a grid. This arrangement requires a complex, non-compliant, the Tank interior facing floor plate. A subsequent renovation With such a system is naturally with great effort connected.
  • the CH 617 148 A5 is a storage tank for liquid fuels known, with a serving to absorb mechanical forces Main wall, in particular of concrete or reinforced concrete, and one provided on the fuel filling side facing sealing coating, which faces several layers Having the fuel resistant plastic material.
  • this inner wall has a profiled, distance-forming Sheet metal, an intermediate filling of synthetic resin mortar and an electrically conductive cover layer. Such an arrangement is also very expensive and expensive to produce.
  • From DE 43 05 441 C1 is a collecting space for wassergefärdende Liquids with an outer concrete floor, one Sealant in the form of a patch on the outer bottom layer liquid-tight sheet metal tray and with a inner bottom layer and a circumferential side wall made of concrete known, the sheet metal tray on all sides of the concrete of the Ground layers and the side wall is surrounded.
  • Such a collection room is naturally very expensive to manufacture, moreover This solution is not suitable for retrofitting Liquid containers we flat bottom tanks.
  • EP 0 705 771 B1 is a method for producing a double-walled tanks known from a single-walled tank, at from flat profiles and steel sheets a second inner tank manufactured and arranged at a distance to the existing tank becomes.
  • Such methods are very complicated and expensive, moreover there is a risk that in subsidence, in particular larger tanks leaks occur.
  • Object of the present invention is one on leaks verifiable lining or lining of a liquid container to provide that reliable and works long-term stable and can be produced with little effort is. In particular, it should withstand high container pressures, without failing. Another concern of the invention is it, a liquid container with leak monitoring as well Leak monitoring method of a liquid container for To make available.
  • the invention solves this problem by a training or disguise according to claim 1, a liquid container according to claim 5 or a method according to claim 7, preferably in conjunction with one or more of the features of the respective subclaims.
  • the core of the invention is the use of a lining of a Liquid container with a net-like spacer layer crosswise arranged individual filaments in connection with a cushioning layer of foam.
  • the spacer layer serves to ensure a fluid-permeable gap or an intermediate layer between the actual Seal and the container bottom or the container wall and thus to check the tightness of both of films existing seal as well as the container bottom or -wandung.
  • foam padding between the foil seal and the spacer layer prevents that the film at high pressure and long-term stress in the Intermediate spaces of the spacer layer pressed and thereby likeoder can be destroyed in the long term.
  • the lining according to the invention can be used in particular for lining the tank bottom, possibly also the tank inner walls used However, it can also be used for the outer lining of a Liquid container can be used in case of any Leakage of the tank wall a reliable separation between the emerging dangerous goods and z. For example, rainwater to reach.
  • the term lining is used, it is also an outer lining a liquid container, for example a tank, includes.
  • the reticulated spacer layer of two crosswise to each other arranged levels of monofilaments the monofilaments basically a same thread thickness of particular 1 to 5 mm can have.
  • the free space between two threads is preferably 0.5 to 4 mm, in particular 1 to 2.5 mm. at appropriate selection of the foam for the cushion layer is thus reliably ensured that the foam does not penetrate so far into the reticulate spacer layer, that this is completely closed.
  • the foam material of the cushion layer in some Dimension penetrates into the reticulated spacer layer without them however, to close completely.
  • the individual threads In the tank bottom or the tank wall facing the plane have the individual threads a thickness of about 1.5 to 3.5 mm, in particular 2 to 3 mm, at a pitch of 4 to 8 mm, in particular 5 to 7 mm.
  • the individual threads of this level thus preferably have one greater thickness and a greater distance from each other than the threads the level of the spacer layer adjacent to the foam.
  • the individual threads in each of the two levels run approximately parallel to each other, while the threads of a plane to the threads the other plane at an angle of 40 to 90 ° to each other. In particular, for manufacturing reasons, the Angle thereby deviate from 90 °.
  • the threads of the net-like spacer layer are preferably made made of thermoplastic material, in particular of polyolefins. Particularly preferred are polypropylene and in particular PE-HD, their low creep under stress sufficient Ensures long-term stability. PE-HD has the most favorable compromise between good manageability (flexibility) and low creep on. In some circumstances, too a networking of threads be useful.
  • the monofilaments of both planes arranged crosswise to one another are preferred interconnected, in particular, welded together to to ensure better handling and shifting to prevent the threads from each other. You can basically also be interwoven with each other.
  • a crosslinked polyolefin foam of a density between 120 and 350 kg / m 3 is preferably used.
  • Crosslinked polyolefin foams for example commercially available under the trademark Trocellen®, have an excellent long-term compressive behavior with low tendency to creep, so that a reliable lining is ensured even with high pressure stresses of the lining by a high liquid column with the appropriate selection of reticular layer.
  • the bulk density is particularly preferably between 180 and 250 kg / m 3 , since in this area, on the one hand, a sufficient stability of the cushion layer is ensured and, on the other hand, a satisfactory protection of the cushion layer over the actual sealing is ensured.
  • the preferred thickness of the cushioning layer is between 3 and 5 mm, with larger thicknesses providing only a small additional protective effect.
  • the actual liquid-tight foil seal is made -
  • thermoplastic material in particular soft PVC.
  • Eg can the fuel oil tank foil Mipoplast® R 9625/6 from Sika-Trocal GmbH be used.
  • the lining according to the invention may optionally be in the individual Layers are successively mounted in or on the tank, so First, the net-like spacer layer of crosswise to each other arranged monofilaments, then the padding layer Foam and finally the liquid-tight foil seal.
  • a composite sheet consisting of the spacer layer and the cushion layer or from all three, interconnected Layers.
  • a two-ply Layer of spacer layer and cushion layer of foam wherein both are joined together by thermal welding are applied while the foil seal is applied separately becomes.
  • the foil seal consists of individual geomembranes, which are welded overlapping each other.
  • the fluid-tight seal against the container bottom or the Tank wall is done in the average person skilled in principle known manner, in particular by clamping rails, bonding o. The like.
  • the leak monitoring is done in the expert known manner in particular by applying negative pressure the space between the cushion layer and the actual Wall or the bottom of the tank. In case of a leak the liquid container reduces this negative pressure and with a pressure-dependent control alarm can be triggered.
  • the lining according to the invention is suitable for tanks and others Container with large filling heights, z. Up to about 20 to 25 m, as well as arbitrary diameters. Possibly. can with large diameters the liquid container of the interstitial space is divided appropriately be targeted to individual segments in case of leakage to be able to rehabilitate.
  • a density of 220 kg / m 3 (trade name Trocellen®, type 22004N, manufacturer HT TROPLAST AG,) and a thickness of 4 mm with a mesh or lattice-like Sheets made of PE-HD threads thermally laminated.
  • the reticulated fabric consists of two interconnected at the crossing points, extending in two planes monofilaments 6, 6 '. In each plane, the threads are parallel to each other and opposite the threads 6, 6 'of the other plane at an angle of approximately 70 ° to each other.
  • the foam facing the plane consists of monofilaments 6 with 1.5 mm diameter ( D in Fig.
  • the tank bottom facing plane consists of monofilaments 6 'a thickness C of 2.5 mm in diameter and a pitch B of 6 mm, ie a clearance of 3.5 mm from each other.
  • the bottom 2 of the oil tank becomes two-layered with these sheet-shaped Elements initially designed.
  • the single web-shaped Elements are transferred to shock.
  • the long edges between two adjacent elements are subsequently by welding foam tapes from the same material as the cushion layer fixed to each other, which simultaneously conceals the edges and the later overlying sealing foil is protected.
  • connection of the system to the tank wall is closer in Fig. 1 explained.
  • a metal strip 7 in about 80 cm height welded over the tank bottom 2 under a sharp wave.
  • the edge of the sealing film 4 to this metal strip 7 attached by gluing.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Examining Or Testing Airtightness (AREA)
  • Laminated Bodies (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

The invention relates to a fluid container and to means and a method for lining said fluid container. The aim of the invention is to provide a lining or covering for a fluid container which lining or covering can be examined for leaks, works reliably and stably over a long period and can be produced without complications. The lining or covering should especially be resistant to high container pressures without failures. To this end, the invention provides a lining that has a net-like spacing layer with individual threads arranged cross-wise relative one another, a fluid-impermeable film seal and a padding layer from foam material disposed between the film seal and the spacing layer. The free space defined by the spacing layer serves to monitor the container for leaks. The lining is used for lining a tank bottom, especially a flat-bottom tank, optionally also the tank inner walls, but can also be used to cover the exterior of the fluid container.

Description

Gegenstand der Erfindung ist ein Flüssigkeitsbehälter mit Lecküberwachung insbesondere zur Lagerung wassergefährdender Stoffe, eine Auskleidung für einen Flüssigkeitsbehälter sowie ein Verfahren zur Auskleidung eines Flüssigkeitsbehälters.The invention relates to a liquid container with leak monitoring in particular for the storage of water-polluting substances, a liner for a liquid container and a Process for lining a liquid container.

Technisches GebietTechnical area

Als Flüssigkeitsbehälter für die Lagerung wassergefährdender Stoffe werden beispielsweise Flachbodentanks gemäß DIN 4119 und andere Lagerbehälter, wie beispielsweise zylindrische Lagerund Stahlbehälter nach DIN 6608-1, eingesetzt. Gemäß der Verordnung zur Lagerung wassergefährdender Stoffe können derartige Flüssigkeitsbehälter mit Doppelböden ausgerüstet sein, die einen Überwachungsraum zur Lecküberwachung bilden. In dem Überwachungsraum wird durch eine Unterdruckpumpe eines Leckanzeigers ein Unterdruck erzeugt. Im Falle einer Undichtigkeit des Flüssigkeitsbehälters verringert sich der Unterdruck und durch eine druckabhängige Steuerung kann Alarm ausgelöst werden.As a liquid container for storage water polluting Substances are, for example, flat-bottomed tanks according to DIN 4119 and other storage containers, such as cylindrical Lagerund Steel container according to DIN 6608-1, used. According to the regulation for the storage of water polluting substances such Liquid containers are equipped with double bottoms, the one Form monitoring space for leak monitoring. In the surveillance room is by a vacuum pump of a leak detector generates a negative pressure. In case of leakage of the liquid container decreases the negative pressure and by a pressure-dependent control alarm can be triggered.

Stand der TechnikState of the art

Aus der DE 93 11 620 U1 ist eine auf Undichtigkeiten überprüfbare Auskleidung von Flüssigkeitsbehältern auf der Basis von elektrisch leitfähigem Gummi bekannt. Diese Auskleidung weist jedoch nicht den vorgeschriebenen Überwachungsraum auf.From DE 93 11 620 U1 is a verifiable for leaks Lining of liquid containers based on electrically conductive rubber known. This lining points but not the prescribed surveillance space.

Die CH 561 143 A5 offenbart ein ortsfeste Tankanlage für Flüssigkeiten mit einer aus zwei Bodenplatten und einer dazwischenliegenden Abstandsschicht bestehenden Bodeneinheit. Die Abstandsschicht kann auch in Form eines Gitters ausgeführt sein. Diese Anordnung bedingt eine aufwendige, nicht nachgiebige, dem Tankinneren zugewandte Bodenplatte. Eine nachträgliche Sanierung mit einem derartigen System ist naturgemäß mit hohen Aufwand verbunden. CH 561 143 A5 discloses a stationary tank system for liquids with one of two bottom plates and one in between Spacer layer existing ground unit. The spacer layer can also be designed in the form of a grid. This arrangement requires a complex, non-compliant, the Tank interior facing floor plate. A subsequent renovation With such a system is naturally with great effort connected.

Aus der CH 617 148 A5 ist ein Lagerbehälter für flüssige Brennstoffe bekannt, mit einer zur Aufnahme mechanischer Kräfte dienenden Hauptwand, insbesondere aus Beton oder Stahlbeton, und einer auf deren der Brennstoffüllung zugewandten Seite vorgesehenen abdichtenden Beschichtung, die mehrere Lagen aus gegenüber dem Brennstoff beständigem Kunststoffmaterial aufweist. Im .einzelnen weist diese innere Wandung ein profiliertes, abstandbildendes Blech, eine Zwischenfüllung aus Kunstharzmörtel und eine elektrisch leitende Deckschicht auf. Eine solche Anordnung ist ebenfalls ausgesprochen aufwendig und teuer in der Herstellung.The CH 617 148 A5 is a storage tank for liquid fuels known, with a serving to absorb mechanical forces Main wall, in particular of concrete or reinforced concrete, and one provided on the fuel filling side facing sealing coating, which faces several layers Having the fuel resistant plastic material. in the Individually, this inner wall has a profiled, distance-forming Sheet metal, an intermediate filling of synthetic resin mortar and an electrically conductive cover layer. Such an arrangement is also very expensive and expensive to produce.

Aus der DE 43 05 441 C1 ist ein Auffangraum für wassergefärdende Flüssigkeiten mit einer äußeren Bodenlage aus Beton, einer Dichtmittellage in Form einer auf die äußere Bodenlage aufgesetzten flüssigkeitsdichtenden Metallblechwanne und mit einer inneren Bodenlage sowie einer umlaufenden Seitenwand aus Beton bekannt, wobei die Metallblechwanne allseitig von dem Beton der Bodenlagen und der Seitenwand umgeben ist. Ein solcher Auffangraum ist naturgemäß sehr aufwendig in der Herstellung, zudem eignet sich diese Lösung nicht zur nachträglichen Sanierung von Flüssigkeitsbehältern wir Flachbodentanks.From DE 43 05 441 C1 is a collecting space for wassergefärdende Liquids with an outer concrete floor, one Sealant in the form of a patch on the outer bottom layer liquid-tight sheet metal tray and with a inner bottom layer and a circumferential side wall made of concrete known, the sheet metal tray on all sides of the concrete of the Ground layers and the side wall is surrounded. Such a collection room is naturally very expensive to manufacture, moreover This solution is not suitable for retrofitting Liquid containers we flat bottom tanks.

Aus der DE 38 34 656 C1 ist eine Anordnung zum nachträglichen Abdichten einer Ölauffangwanne bekannt, die im wesentlichen aus zwei Folien besteht, zwischen denen ein Unterdruck zur Überprüfung einer eventuellen Leckage angelegt wird. Diese Schrift offenbart jedoch keine Möglichkeit, die Durchgängigkeit des Zwischenraumes zwischen den beiden Folien bei Anliegen des Unterdrucks sicherzustellen, so daß eine zuverlässige Leckerkennung nicht gewährleistet ist.From DE 38 34 656 C1 is an arrangement for retrofitting Sealing an oil sump known, consisting essentially of there are two slides between which a negative pressure for verification a possible leakage is created. This font however, does not disclose the continuity of the Interspace between the two films when the negative pressure is applied ensure that a reliable leak detection is not guaranteed.

Aus der EP 0 705 771 B1 ist ein Verfahren zur Herstellung eines doppelwandigen Tanks aus einem einwandigen Tank bekannt, bei dem aus Flachprofilen und Stahlblechen ein zweiter Innentank hergestellt und im Abstand zum bestehenden Tank angeordnet wird. Derartige Verfahren sind sehr aufwendig und teuer, zudem besteht die Gefahr, daß bei Setzungserscheinungen insbesondere größerer Tanks Undichtigkeiten auftreten. From EP 0 705 771 B1 is a method for producing a double-walled tanks known from a single-walled tank, at from flat profiles and steel sheets a second inner tank manufactured and arranged at a distance to the existing tank becomes. Such methods are very complicated and expensive, moreover there is a risk that in subsidence, in particular larger tanks leaks occur.

Aus der DE 29 807 285 U1 ist ein Flachbodentank mit Leckschutzauskleidung bekannt, bei dem die Leckschutzauskleidung aus einer medienresistenten Folie aus Kunststoff besteht, die durch geeignete Abstandshalter in einem geringen Abstand zum Tankboden befestigt ist. Bei Verwendung zugelassener Auskleidungsfolien, z. B. bei Öltanks, besteht hierbei jedoch die Gefahr, daß die Folie durch den hohen Flüssigkeitsdruck in die beispielsweise aus einem Gitter bestehende Zwischenschicht gedrückt und dabei beschädigt wird. Eine weitere Gefahr besteht darin, daß der Zwischenraum durch die eingedrückte Folie abgedichtet wird, wodurch eine Überwachung verhindert wird. Hierdurch ist insbesondere die Langzeitstabilität des Systems nicht zuverlässig gewährleistet.From DE 29 807 285 U1 is a flat-bottom tank with Leakage protection lining known in which the leak protection lining consists of a media-resistant plastic film, by suitable spacers at a small distance attached to the tank bottom. When using approved lining films, z. B. in oil tanks, but here is the Danger that the film due to the high fluid pressure in the For example, pressed from a grid existing intermediate layer and it gets damaged. Another danger exists in that the gap is sealed by the indented film which prevents monitoring. hereby In particular, the long-term stability of the system is not reliably guaranteed.

Aufgabetask

Aufgabe der vorliegenden Erfindung ist es, eine auf Undichtigkeiten überprüfbare Auskleidung bzw. Verkleidung eines Flüssigkeitsbehälters zur Verfügung zu stellen, die zuverlässig und langzeitstabil arbeitet und mit geringem Aufwand herstellbar ist. Sie soll insbesondere auch hohen Behälterdrücken standhalten, ohne zu versagen. Ein weiteres Anliegen der Erfindung ist es, einen Flüssigkeitsbehälter mit Lecküberwachung sowie ein Verfahren zur Lecküberwachung eines Flüssigkeitsbehälters zur Verfügung zu stellen.Object of the present invention is one on leaks verifiable lining or lining of a liquid container to provide that reliable and works long-term stable and can be produced with little effort is. In particular, it should withstand high container pressures, without failing. Another concern of the invention is it, a liquid container with leak monitoring as well Leak monitoring method of a liquid container for To make available.

Darstellung der ErfindungPresentation of the invention

Die Erfindung löst diese Aufgabe durch eine Aus- bzw. Verkleidung nach Anspruch 1, einen Flüssigkeitsbehälter nach Anspruch 5 bzw. ein Verfahren nach Anspruch 7, bevorzugt in Verbindung mit einem oder mehreren der Merkmale der jeweiligen Unteransprüche.The invention solves this problem by a training or disguise according to claim 1, a liquid container according to claim 5 or a method according to claim 7, preferably in conjunction with one or more of the features of the respective subclaims.

Kern der Erfindung ist die Verwendung einer Auskleidung eines Flüssigkeitsbehälters mit einer netzartigen Abstandsschicht aus kreuzweise zueinander angeordneten Einzelfäden in Verbindung mit einer Polsterschicht aus Schaumstoff. Die Abstandsschicht dient dabei zur Sicherstellung eines fluiddurchlässigen Zwischenraumes bzw. einer Zwischenschicht zwischen der eigentlichen Abdichtung und dem Behälterboden bzw. der Behälterwandung und damit zur Überprüfung der Dichtigkeit sowohl der aus Folien bestehenden Abdichtung als auch des Behälterbodens bzw. -wandung. Der Einsatz der Polsterschicht aus Schaumstoff zwischen der Folien-Abdichtung und der Abstandsschicht verhindert, daß die Folie bei hoher Druck- und Langzeitbeanspruchung in die Zwischenräume der Abstandsschicht gepreßt und hierdurch kurzoder langfristig zerstört werden kann.The core of the invention is the use of a lining of a Liquid container with a net-like spacer layer crosswise arranged individual filaments in connection with a cushioning layer of foam. The spacer layer serves to ensure a fluid-permeable gap or an intermediate layer between the actual Seal and the container bottom or the container wall and thus to check the tightness of both of films existing seal as well as the container bottom or -wandung. The use of foam padding between the foil seal and the spacer layer prevents that the film at high pressure and long-term stress in the Intermediate spaces of the spacer layer pressed and thereby kurzoder can be destroyed in the long term.

Die erfindungsgemäße Auskleidung kann insbesondere zur Auskleidung des Tankbodens, ggf. auch der Tankinnenwände verwendet werden, sie kann jedoch auch zur äußeren Verkleidung eines Flüssigkeitsbehälters verwendet werden, um bei einer eventuellen Undichtigkeit der Tankwandung eine zuverlässige Trennung zwischen dem austretenden Gefahrgut und z. B. Regenwasser zu erreichen. Soweit in dieser Anmeldung der Begriff Auskleidung verwendet wird, wird damit gleichzeitig auch eine äußere Verkleidung eines Flüssigkeitsbehälters, beispielsweise eines Tankes, umfaßt.The lining according to the invention can be used in particular for lining the tank bottom, possibly also the tank inner walls used However, it can also be used for the outer lining of a Liquid container can be used in case of any Leakage of the tank wall a reliable separation between the emerging dangerous goods and z. For example, rainwater to reach. As far as in this application the term lining is used, it is also an outer lining a liquid container, for example a tank, includes.

Nach einer bevorzugten Ausführungsform der Erfindung besteht die netzartige Abstandsschicht aus zwei kreuzweise zueinander angeordneten Ebenen von Einzelfäden, wobei die Einzelfäden grundsätzlich eine gleiche Fadenstärke von insbesondere 1 bis 5 mm aufweisen können. Bevorzugt werden die einzelnen Ebenen von Einzelfäden jedoch aus unterschiedlich dicken Einzelfäden gebildet, wobei nach einer besonders bevorzugten Ausführungsform der Erfindung die der Polsterschicht zugewandte Ebene aus Fäden mit einem Durchmesser zwischen etwa 1 bis 2 mm bestehen, wobei die einzelnen Fäden mit einer Teilung von 2,5 bis 5 mm angeordnet sind. Der freie Zwischenraum zwischen zwei Fäden beträgt bevorzugt 0,5 bis 4 mm, insbesondere 1 bis 2,5 mm. Bei entsprechender Auswahl des Schaumstoffs für die Polsterschicht wird damit zuverlässig sichergestellt, daß der Schaumstoff nicht so weit in die netzartige Abstandsschicht eindringt, daß diese vollständig verschlossen wird. Es ist für die Sicherstellung der Überprüfbarkeit der Auskleidung jedoch nicht schädlich, wenn das Schaumstoffmaterial der Polsterschicht in gewissem Maß in die netzartige Abstandsschicht eindringt, ohne sie jedoch vollständig zu verschließen. In der dem Tankboden bzw. der Tankwandung zugewandten Ebene weisen die einzelnen Fäden eine Stärke von ca. 1,5 bis 3,5 mm, insbesondere 2 bis 3 mm, auf bei einer Teilung von 4 bis 8 mm, insbesondere 5 bis 7 mm. Die einzelnen Fäden dieser Ebene haben bevorzugt somit eine größere Dicke und einen größeren Abstand zueinander als die Fäden der dem Schaumstoff angrenzenden Ebene der Abstandsschicht.According to a preferred embodiment of the invention the reticulated spacer layer of two crosswise to each other arranged levels of monofilaments, the monofilaments basically a same thread thickness of particular 1 to 5 mm can have. Preference is given to the individual levels from monofilaments, however, from different thickness individual threads formed, wherein according to a particularly preferred embodiment the invention of the cushion layer facing plane Threads with a diameter between about 1 to 2 mm, the individual threads having a pitch of 2.5 to 5 mm are arranged. The free space between two threads is preferably 0.5 to 4 mm, in particular 1 to 2.5 mm. at appropriate selection of the foam for the cushion layer is thus reliably ensured that the foam does not penetrate so far into the reticulate spacer layer, that this is completely closed. It is for the assurance but not harmful to the verifiability of the lining, if the foam material of the cushion layer in some Dimension penetrates into the reticulated spacer layer without them however, to close completely. In the tank bottom or the tank wall facing the plane have the individual threads a thickness of about 1.5 to 3.5 mm, in particular 2 to 3 mm, at a pitch of 4 to 8 mm, in particular 5 to 7 mm. The individual threads of this level thus preferably have one greater thickness and a greater distance from each other than the threads the level of the spacer layer adjacent to the foam.

Die einzelnen Fäden in jeder der beiden Ebenen verlaufen etwa parallel zueinander, während die Fäden einer Ebene zu den Fäden der anderen Ebene im Winkel von 40 bis 90° zueinander verlaufen. Insbesondere aus fertigungstechnischen Gründen kann der Winkel dabei von 90° abweichen.The individual threads in each of the two levels run approximately parallel to each other, while the threads of a plane to the threads the other plane at an angle of 40 to 90 ° to each other. In particular, for manufacturing reasons, the Angle thereby deviate from 90 °.

Die Fäden der netzartigen Abstandsschicht bestehen bevorzugt aus thermoplastischem Kunststoff, insbesondere aus Polyolefinen. Besonders bevorzugt sind Polypropylen und insbesondere PE-HD, deren geringe Kriechneigung unter Beanspruchung eine ausreichende Langzeitstabilität gewährleistet. PE-HD weist den günstigsten Kompromiß zwischen guter Handhabbarkeit (Flexibilität) und geringer Kriechneigung auf. Unter Umständen kann auch eine Vernetzung der Fäden sinnvoll sein. Die Einzelfäden der beiden kreuzweise zueinander angeordneten Ebenen sind bevorzugt miteinander verbunden, insbesondere miteinander verschweißt, um eine bessere Handhabbarkeit zu gewährleisten und ein Verschieben der Fäden gegeneinander zu verhindern. Sie können grundsätzlich auch miteinander verwebt sein.The threads of the net-like spacer layer are preferably made made of thermoplastic material, in particular of polyolefins. Particularly preferred are polypropylene and in particular PE-HD, their low creep under stress sufficient Ensures long-term stability. PE-HD has the most favorable compromise between good manageability (flexibility) and low creep on. In some circumstances, too a networking of threads be useful. The monofilaments of both planes arranged crosswise to one another are preferred interconnected, in particular, welded together to to ensure better handling and shifting to prevent the threads from each other. You can basically also be interwoven with each other.

Als Polsterschicht für die erfindungsgemäße Auskleidung wird bevorzugt ein vernetzter Polyolefinschaumstoff einer Rohdichte zwischen 120 und 350 kg/m3 verwendet. Vernetzte Polyolefinschaumstoffe, beispielsweise im Handel erhältlich unter der Marke Trocellen®, weisen ein ausgezeichnetes Langzeitverhalten unter Druckbeanspruchung mit geringer Kriechneigung auf, so daß mit der geeigneten Auswahl der netzartigen Abstandsschicht eine zuverlässige Auskleidung auch bei hohen Druckbeanspruchungen der Auskleidung durch eine hohe Flüssigkeitssäule gewährleistet ist. Die Rohdichte beträgt besonders bevorzugt zwischen 180 und 250 kg/m3, da in diesem Bereich einerseits eine genügende Stabilität der Polsterschicht gewährleistet ist und andererseits ein befriedigender Schutz der über der Polsterschicht angeordneten eigentlichen Abdichtung gewährleistet ist. Die bevorzugte Dicke der Polsterschicht beträgt zwischen 3 und 5 mm, wobei größere Dicken nur eine geringe zusätzliche Schutzwirkung bewirken.As a cushion layer for the lining according to the invention a crosslinked polyolefin foam of a density between 120 and 350 kg / m 3 is preferably used. Crosslinked polyolefin foams, for example commercially available under the trademark Trocellen®, have an excellent long-term compressive behavior with low tendency to creep, so that a reliable lining is ensured even with high pressure stresses of the lining by a high liquid column with the appropriate selection of reticular layer. The bulk density is particularly preferably between 180 and 250 kg / m 3 , since in this area, on the one hand, a sufficient stability of the cushion layer is ensured and, on the other hand, a satisfactory protection of the cushion layer over the actual sealing is ensured. The preferred thickness of the cushioning layer is between 3 and 5 mm, with larger thicknesses providing only a small additional protective effect.

Die eigentliche flüssigkeitsdichte Folien-Abdichtung besteht - wie dem Durchschnittsfachmann grundsätzlich bekannt - aus thermoplastischem Kunststoff, insbesondere Weich-PVC. Z. B. kann die Heizöltankfolie Mipoplast® R 9625/6 der Firma Sika-Trocal GmbH verwendet werden.The actual liquid-tight foil seal is made - As the average expert basically known - from thermoplastic material, in particular soft PVC. Eg can the fuel oil tank foil Mipoplast® R 9625/6 from Sika-Trocal GmbH be used.

Die erfindungsgemäße Auskleidung kann ggf. in den einzelnen Schichten nacheinander im bzw. am Tank angebracht werden, also zunächst die netzartige Abstandsschicht aus kreuzweise zueinander angeordneten Einzelfäden, dann die Polsterschicht aus Schaumstoff und abschließend die flüssigkeitsdichte Folien-Abdichtung. Bevorzugt ist jedoch die Verwendung eines Verbund-Flächengebildes, bestehend aus der Abstandsschicht und der Polsterschicht oder aus allen drei, miteinander verbundenen Schichten.The lining according to the invention may optionally be in the individual Layers are successively mounted in or on the tank, so First, the net-like spacer layer of crosswise to each other arranged monofilaments, then the padding layer Foam and finally the liquid-tight foil seal. However, it is preferred to use a composite sheet, consisting of the spacer layer and the cushion layer or from all three, interconnected Layers.

Besonders bevorzugt ist die Verwendung einer zweilagigen Schicht aus Abstandsschicht und Polsterschicht aus Schaumstoff, wobei beide durch thermisches Verschweißen miteinander verbunden sind, während die Folien-Abdichtung getrennt aufgebracht wird. Die Folien-Abdichtung besteht dabei aus einzelnen Dichtungsbahnen, die überlappend miteinander verschweißt werden. Die fluiddichte Abdichtung gegenüber dem Behälterboden bzw. der Behälterwandung erfolgt in dem Durchschnittsfachmann grundsätzlich bekannter Weise, insbesondere durch Klemmschienen, Verkleben o. dgl. Die Lecküberwachung erfolgt in an sich dem Fachmann bekannter Weise insbesondere durch Anlegen von Unterdruck an den Zwischenraum zwischen Polsterschicht und der eigentlichen Wandung bzw. dem Boden des Tanks. Im Falle einer Undichtigkeit des Flüssigkeitsbehälters verringert sich dieser Unterdruck und mit einer druckabhängigen Steuerung kann Alarm ausgelöst werden. Particularly preferred is the use of a two-ply Layer of spacer layer and cushion layer of foam, wherein both are joined together by thermal welding are applied while the foil seal is applied separately becomes. The foil seal consists of individual geomembranes, which are welded overlapping each other. The fluid-tight seal against the container bottom or the Tank wall is done in the average person skilled in principle known manner, in particular by clamping rails, bonding o. The like. The leak monitoring is done in the expert known manner in particular by applying negative pressure the space between the cushion layer and the actual Wall or the bottom of the tank. In case of a leak the liquid container reduces this negative pressure and with a pressure-dependent control alarm can be triggered.

Die erfindungsgemäße Auskleidung eignet sich für Tanks und andere Behälter mit großen Füllhöhen, z. B. bis ca. 20 bis 25 m, sowie beliebigen Durchmessern. Ggf. kann bei großen Durchmessern der Flüssigkeitsbehälter der Überwachungsraum geeignet geteilt werden, um im Falle einer Leckage einzelne Segmente gezielt sanieren zu können.The lining according to the invention is suitable for tanks and others Container with large filling heights, z. Up to about 20 to 25 m, as well as arbitrary diameters. Possibly. can with large diameters the liquid container of the interstitial space is divided appropriately be targeted to individual segments in case of leakage to be able to rehabilitate.

Als Lagerstoffe können je nach verwendeter Abdichtungsfolie Medien der Gefahrenklassen AI, AII, AIII und B gemäß § 3 der VbF gelagert werden.As storage materials, depending on the used sealing film media the danger classes AI, AII, AIII and B according to § 3 of the VbF be stored.

Ein wichtiger Vorteil des erfindungsgemäßen Systems gegenüber gebräuchlichen Lösungen ist die Flexibilität des gesamten Aufbaus. So können vorhandene Unebenheiten des Untergrundes, z. B. des Stahlbodens, überbrückt werden. Dabei entstehen keine zusätzlichen Spannungen und Kräfte, welche auf die vorhandene Stahlkonstruktion wirken und Schäden verursachen könnten.An important advantage of the system according to the invention common solutions is the flexibility of the entire structure. So existing unevenness of the ground, z. B. of the steel floor, to be bridged. There are no additional costs Tensions and forces, which on the existing Steel structure act and could cause damage.

Kurze Beschreibung der ZeichnungShort description of the drawing

Die Erfindung wird nachfolgend anhand eines Ausführungsbeispiels sowie der Zeichnung näher erläutert. Es zeigen dabei:

Fig. 1
einen Querschnitt durch einen erfindungsgemäß ausgekleideten Tankboden
Fig. 2
eine perspektivische Ansicht der erfindungsgemäßen Auskleidung in der Ansicht vom Behälterboden aus.
The invention will be explained in more detail with reference to an embodiment and the drawing. It shows:
Fig. 1
a cross section through a inventively lined tank bottom
Fig. 2
a perspective view of the liner according to the invention in the view from the container bottom.

Bester Weg zur Ausführung der ErfindungBest way to carry out the invention

Für die Auskleidung eines Tankbodens 2 eines Stahlöltanks werden zunächst bahnenförmige Elemente aus vernetztem Polyolefinschaum einer Rohdichte von 220 kg/m3 (Handelsname Trocellen®, Typ 22004N, Hersteller HT TROPLAST AG,) und einer Dicke von 4 mm mit einem netz- bzw. gitterartigen Flächengebilde aus PE-HD-Fäden thermisch kaschiert. Das netzartige Flächengebilde besteht dabei aus zwei an den Kreuzungspunkten miteinander verbundenen, in zwei Ebenen verlaufenden Einzelfäden 6, 6'. In jeder Ebene verlaufen die Fäden parallel zueinander und gegenüber den Fäden 6, 6' der anderen Ebene im Winkel von ca. 70° zueinander. Die dem Schaumstoff zugewandte Ebene besteht aus Einzelfäden 6 mit 1,5 mm Durchmesser (D in Fig. 2) und einer Teilung A von 3,7 mm, also mit einer lichten Gitterweite von 2,2 mm. Die dem Tankboden zugewandte Ebene besteht aus Einzelfäden 6' einer Dicke C von 2,5 mm Durchmesser und einer Teilung B von 6 mm, also einem lichten Abstand von 3,5 mm zueinander.For the lining of a tank bottom 2 of a steel oil tank initially sheet-like elements of crosslinked polyolefin foam a density of 220 kg / m 3 (trade name Trocellen®, type 22004N, manufacturer HT TROPLAST AG,) and a thickness of 4 mm with a mesh or lattice-like Sheets made of PE-HD threads thermally laminated. The reticulated fabric consists of two interconnected at the crossing points, extending in two planes monofilaments 6, 6 '. In each plane, the threads are parallel to each other and opposite the threads 6, 6 'of the other plane at an angle of approximately 70 ° to each other. The foam facing the plane consists of monofilaments 6 with 1.5 mm diameter ( D in Fig. 2) and a pitch A of 3.7 mm, ie with a clear grid width of 2.2 mm. The tank bottom facing plane consists of monofilaments 6 'a thickness C of 2.5 mm in diameter and a pitch B of 6 mm, ie a clearance of 3.5 mm from each other.

Der Boden 2 des Öltanks wird mit diesen bahnenförmigen zweischichtigen Elementen zunächst ausgelegt. Die einzelnen bahnenförmigen Elemente werden dabei auf Stoß verlegt. Die Längskanten zwischen zwei aneinander grenzenden Elementen werden anschließend durch Aufschweißen von Schaumstoffbändern aus dem gleichen Material wie die Polsterschicht zueinander fixiert, wodurch gleichzeitig die Stoßkanten verdeckt und die später darüberliegende Abdichtungsfolie geschützt wird.The bottom 2 of the oil tank becomes two-layered with these sheet-shaped Elements initially designed. The single web-shaped Elements are transferred to shock. The long edges between two adjacent elements are subsequently by welding foam tapes from the same material as the cushion layer fixed to each other, which simultaneously conceals the edges and the later overlying sealing foil is protected.

Auf diese mehrlagige Schicht wird anschließend in an sich bekannter Weise eine Abdichtung 4 aus einer Tankschutzfolie aus Weich-PVC, Handelsname Mipoplast® R 9625/6 der Sika-Trocal GmbH, mit einer Stärke von 1,5 mm aufgebracht und überlappend zu einer flüssigkeitsdichten Folien-Abdichtung miteinander verbunden.On this multilayer layer is then known in per se Make a seal 4 from a tank protection film Soft PVC, trade name Mipoplast® R 9625/6 of Sika-Trocal GmbH, applied with a thickness of 1.5 mm and overlapping to one liquid-tight film seal connected together.

Die Anbindung des Systems an die Tankwandung ist in Fig. 1 näher erläutert. Hierzu wird ein Blechstreifen 7 in ca. 80 cm Höhe über dem Tankboden 2 unter einem spitzen Winken angeschweißt. Der Rand der Abdichtungsfolie 4 an diesen Blechstreifen 7 durch Kleben befestigt. Anschließend erfolgt ein Vergießen der Sicke mit einer medienbeständigen Vergußmasse 3.The connection of the system to the tank wall is closer in Fig. 1 explained. For this purpose, a metal strip 7 in about 80 cm height welded over the tank bottom 2 under a sharp wave. The edge of the sealing film 4 to this metal strip 7 attached by gluing. Subsequently, a casting the bead with a media-resistant sealing compound. 3

LegendeLegend

11
Tankwandungtank wall
22
Tankbodentank bottom
33
Vergußmassesealing compound
44
Abdichtungsfoliewaterproofing foil
55
Schaumstoffschichtfoam layer
66
Fäden der 1. EbeneThreads of the 1st level
6'6 '
Fäden der 2. EbeneThreads of the 2nd level
77
Blechstreifenmetal strip

Claims (6)

  1. Lining or cladding of a liquid container capable of being checked for leaks with a liquid-type sheet seal (4) and with a net-like spacer layer, characterized in that the lining or cladding has
    a net-like spacer layer consisting of individual threads (6, 6') arranged crosswise to one another, and
    a cushioning layer arranged between the sheet seal (4) and spacer layer and consisting of foam material (5).
  2. Lining according to Claim 1, characterized in that the individual threads (6, 6') of the net-like spacer layer have a diameter of 1 to 5 mm.
  3. Lining according to Claim 2, characterized in that the net-like spacer layer consists of two planes of individual threads (6, 6'), the upper plane which faces the cushioning layer consisting of individual threads (6), each with a diameter of 1 to 2 mm and with a mean spacing of 2.5 to 5 mm, and a lower plane of the spacer layer which faces away from the cushioning layer consisting of thicker threads (6') with a diameter of 2 to 3 mm and with a mean spacing of the individual threads (6') of 5 to 7 mm, and the threads of the two planes running one under the other at an angle of 40 to 90° to one another and being connected to one another at the crossing points.
  4. Lining according to one of Claims 1 to 3, characterized in that the cushioning layer consists of cross-linked polyolefine foam material (5) with a bulk density of between 120 and 350, in particular of 180 to 250 kg/m3, and a thickness of between 3 and 5 mm.
  5. Liquid container with leakage monitoring for the storage of water-incompatible materials, with a liquid-tight sheet seal (4) capable of being checked for leaks and with a net-like spacer layer,
    the liquid-tight sheet seal (4) being sealed off, fluid-tight, with respect to the bottom and/or to the wall of the liquid container, and
    the net-type spacer layer being subjected to a pressure reduced with respect to the atmosphere for the purpose of monitoring the leak-tightness,
    characterized in that the lining or cladding of the liquid container has
    a net-like spacer layer consisting of individual threads arranged crosswise to one another and
    a cushioning layer arranged between the sheet seal (4) and the spacer layer and consisting of foam material (5).
  6. Method for a leakage monitoring of a liquid container, using a lining or cladding according to one of Claims 1 to 4, the sheet seal (4) of the lining or cladding being sealed off, fluid-tight, with respect to the bottom and/or to the wall of the liquid container, and the interspace formed between the cushioning layer and the container bottom or container wall by means of the net-like spacer layer being checked for leak-tightness by means of a vacuum.
EP01986292A 2000-10-05 2001-10-04 Fluid container and means and method for lining the same Expired - Lifetime EP1339624B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10049640A DE10049640A1 (en) 2000-10-05 2000-10-05 Liquid containers and means and methods for lining the same
DE10049640 2000-10-05
PCT/DE2001/003821 WO2002028749A1 (en) 2000-10-05 2001-10-04 Fluid container and means and method for lining the same

Publications (2)

Publication Number Publication Date
EP1339624A1 EP1339624A1 (en) 2003-09-03
EP1339624B1 true EP1339624B1 (en) 2005-06-01

Family

ID=7658954

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01986292A Expired - Lifetime EP1339624B1 (en) 2000-10-05 2001-10-04 Fluid container and means and method for lining the same

Country Status (7)

Country Link
EP (1) EP1339624B1 (en)
AT (1) ATE296774T1 (en)
AU (1) AU2002223014A1 (en)
CZ (1) CZ2003969A3 (en)
DE (3) DE10049640A1 (en)
PL (1) PL361154A1 (en)
WO (1) WO2002028749A1 (en)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH517148A (en) 1969-03-04 1971-12-31 Sandoz Ag Basic azo dye preparation
DE2450559A1 (en) * 1971-10-27 1976-04-29 Erich Barth Internal floor for double walled containers - consists of two layers of welded sheet metal strips
CH561143A5 (en) * 1973-02-22 1975-04-30 Zschokke Wartmann Ag Stationary tank for fluids - with spacers between inner and outer base plate of tank forming evacuated space
DE2620225A1 (en) * 1976-05-07 1977-11-10 Tankbau Gmbh STORAGE CONTAINER FOR LIQUID FUEL
DE3834656C1 (en) * 1988-10-12 1989-12-28 Friedhelm 4130 Moers De Bongards Arrangement for the retrospective sealing of an oil collection trough
DE4305441C1 (en) * 1993-02-23 1994-04-28 Rene Quinting Concrete tank for storage of aqueous liquids - has hardened concrete layers each side of hollow steel liner fitted with pressure monitor and space between liner and walls is filled with fluid
DE9311620U1 (en) 1993-08-04 1993-10-07 Sigri Great Lakes Carbon Gmbh, 65203 Wiesbaden Liner-based linings that can be checked for leaks
DE4435237C1 (en) 1994-10-04 1996-02-22 Quast Gmbh & Co Kg Geb Method and device for producing a double-walled tank
DE29807285U1 (en) 1998-04-22 1998-07-30 Utek Umweltschutztechnologien GmbH, 06785 Oranienbaum Flat bottom tank with leak protection lining

Also Published As

Publication number Publication date
CZ2003969A3 (en) 2004-05-12
PL361154A1 (en) 2004-09-20
DE50106410D1 (en) 2005-07-07
DE10194193D2 (en) 2003-09-04
EP1339624A1 (en) 2003-09-03
ATE296774T1 (en) 2005-06-15
AU2002223014A1 (en) 2002-04-15
WO2002028749A1 (en) 2002-04-11
DE10049640A1 (en) 2002-04-11

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