EP0901972B1 - Storage tank - Google Patents

Storage tank Download PDF

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Publication number
EP0901972B1
EP0901972B1 EP98114396A EP98114396A EP0901972B1 EP 0901972 B1 EP0901972 B1 EP 0901972B1 EP 98114396 A EP98114396 A EP 98114396A EP 98114396 A EP98114396 A EP 98114396A EP 0901972 B1 EP0901972 B1 EP 0901972B1
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EP
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Prior art keywords
storage tank
inner container
tank according
fire protection
jacket
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EP98114396A
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German (de)
French (fr)
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EP0901972A1 (en
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Gerhard Christian Dipl.-Ing. Rambacher
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D90/00Component parts, details or accessories for large containers
    • B65D90/48Arrangements of indicating or measuring devices
    • B65D90/50Arrangements of indicating or measuring devices of leakage-indicating devices
    • B65D90/501Arrangements of indicating or measuring devices of leakage-indicating devices comprising hollow spaces within walls
    • B65D90/503Arrangements of indicating or measuring devices of leakage-indicating devices comprising hollow spaces within walls under pressure or vacuum

Definitions

  • the invention relates to a storage tank for combustible Liquids, especially heating oil, waste oil, lubricating oil or diesel fuel, according to the preamble of claim 1.
  • Storage tanks of this type are primarily used for storage of heating oil used in buildings. To a wall the storage room or a separate drip pan To be able to do without, double-walled tanks come to the Use where the outer shell to prevent leakage of the inner container. As additional protection against Fire exposure is known to the outer shell as closed Metal collection container, through which the tank connections are passed. To protect against corrosion, such tanks must be on Base frame can be put on. Being a disadvantage here viewed the elaborate design that is required is to double the function of the collecting container Ensure leakage and fire protection.
  • the invention is based on the object to develop a storage tank based on easy to manufacture and high fire resistance and guaranteed leakage.
  • a particularly advantageous design provides that the Inner container of its basic shape cylindrical and koaxiai arranged with the outer container is, the fire protection mantle the inner container on the jacket side encloses. Another improvement also in With regard to space-saving use of space can achieved that the collecting container is cup-shaped and that the inner container and the fire protection jacket arranged standing in the collecting container are. It is also beneficial if the fire protection jacket made of sheet steel is trained.
  • the fire protection jacket consists of several ones in the circumferential direction to a rotating around the inner container Sheathing complementary shell segments that under Expansion of the casing against each other are movable.
  • the expansion of the fire protection jacket is advantageous thereby allowing the shell segments through guide elements in the overlap plane of the Longitudinal edge strips perpendicular to their longitudinal direction against each other are guided.
  • the guide elements formed in cross section U-shaped holding plates, which on the upper and lower front edges of the jacket segments the overlapping longitudinal edge strips on the front reach around.
  • the inner container and the collecting container preferably as blow molded parts are made of polyethylene.
  • the inner container, the fire protection jacket and the Collection container a square or in cross section have a rectangular cylindrical shape.
  • the inner container and the collecting container can have inherent stability several each in the axial direction at a distance mutually arranged, circumferential groove-shaped Have indents.
  • the collecting container is advantageously less dense Limiting the space with the inner container connected and a leak detector is provided the one leak sensor engaging in the space having.
  • the leak detector can generate means have a negative pressure in the intermediate space, the leak sensor for detecting a leak-related Pressure compensation designed as a pressure sensor is.
  • the storage tank shown in the drawing is used for Storage of heating oil and consists essentially of an inner container 10 for holding the heating oil, one the inner container 10 while keeping a gap or Intermediate 12 collecting container 14th for leakage protection and one arranged in the intermediate space fire-resistant fire protection jacket 16 for shielding of the inner container 10 in the event of a fire.
  • the inner container 10 and the collecting container 14 exist as thin-walled blow molded parts made of plastic, expediently made of polyethylene. Both containers are 10.14 with a square cross-section rounded in the corners essentially cylindrical and standing coaxially with each other. To increase the rigidity or the static load capacity are the containers 10, 14 in their foot region 18 or 20 tapered to the bottom and on its side walls 22.24 distributed over their height with groove-like circumferential indentations 26.28 provided.
  • the cup-shaped, in vertical section U-shaped outer container 14 is on its upper edge 30 with gastight limitation of Interspace 12 connected to the inner container 10.
  • the Storage tank in modular form with additional tanks as a battery tank combine, the individual storage tanks by means of a piping, not shown, over connecting pieces 32 on the upper one, from the collecting container 14 not enclosed end wall 34 of the inner container 10 are interconnectable.
  • a lockable Filling nozzle 36 on the end wall 34 enables this Filling the inner container 10.
  • the fire protection jacket arranged in the intermediate space 12 16 concentrically encloses the inner container 10 and lies closely against its side wall 22. To the Space requirements of the storage tank for a given capacity The outer container also encloses to keep it low 14 with its side wall 24 the fire protection jacket 16 with a small distance, so that the space 12 a has a small gap.
  • the fire protection jacket 16 consists of several shell segments 38, which are expanded are mutually displaceable. How 2, four are in cross section provided at right angles bent shell segments 38 on the longitudinal edge strips 40, 40 'of each other in pairs facing leg 42 forming an im Outline square outline overlap.
  • the jacket segments 38 in the guides formed by the holding plates 46 limited mobility against each other.
  • a leak warning device intended for leak monitoring of the storage tank 48 has one engaging in the intermediate space 12 Leak sensor 50, which is designed as a pressure sensor is.
  • Leak sensor 50 which is designed as a pressure sensor is.
  • a vacuum in the intermediate space is expediently intermittent Generate 12 in the event of a leak in the inner container 10 or leakage of the outer container 14 is quickly compensated.
  • Such pressure equalization is detected by the pressure sensor 50 and the Leak warning device 48 displayed optically and / or acoustically.
  • the outer container 14 melts first external heat exposure and thereby the self-supporting fire protection jacket 16 free. This ensures especially as a radiation shield for a significant reduction the transferred to the inner container 10 thermal energy. Deformed with continued warming the inner container 10 as a result of the decreasing Structural strength of the plastic material under the pressure of the liquid filling. In doing so, however the jacket segments 38 while reducing the overlap areas their longitudinal edge strips 40, 40 'pushed apart, so that the contact pressure of the inner container 10 against the fire protection jacket 16 is kept low. In this way, the heat conduction between the Fire protection jacket 14 and the inner container 10 also Reduce the duration of the fire effectively.

Abstract

The storage tank, for inflammable liquids, has an outer shell (14) of plastics round the inner container (10). The gap (12) between the container (10) and shell (14) is filled with a solid fire protection material (16), to protect the inner container against heat radiation, as reflective sheet(s). The inner container (10) and the outer shell (14) are of blow moulded polyethylene.

Description

Die Erfindung betrifft einen Lagertank für brennbare Flüssigkeiten, insbesondere Heizöl, Altöl, Schmieröl oder Dieselkraftstoff, gemüß dem Oberbegriff des Anspruchs 1.The invention relates to a storage tank for combustible Liquids, especially heating oil, waste oil, lubricating oil or diesel fuel, according to the preamble of claim 1.

Lagertanks dieser Art werden vor allem zur Bevorratung von Heizöl in Gebäuden verwendet. Um auf eine Abmauerung des Lagerraums bzw. eine gesonderte Auffangwanne verzichten zu können, kommen doppelwandige Tanks zum Einsatz, bei denen die Außenschale zur Lecksicherung des Innenbehälters dient. Als zusätzlicher Schutz gegen Feuereinwirkung ist es bekannt, die Außenschale als geschlossenen Auffangbehälter aus Metall auszuführen, durch welchen die Tankanschlüsse hindurchgeführt sind. Zum Schutz gegen Korrosion müssen solche Tanks auf ein Fußgestell aufgesetzt werden. Als nachteilig wird hier die aufwendige Bauweise angesehen, die erforderlich ist, um die Doppelfunktion des Auffangbehälters als Auslauf- und Feuerschutz sicherzustellen. Storage tanks of this type are primarily used for storage of heating oil used in buildings. To a wall the storage room or a separate drip pan To be able to do without, double-walled tanks come to the Use where the outer shell to prevent leakage of the inner container. As additional protection against Fire exposure is known to the outer shell as closed Metal collection container, through which the tank connections are passed. To protect against corrosion, such tanks must be on Base frame can be put on. Being a disadvantage here viewed the elaborate design that is required is to double the function of the collecting container Ensure leakage and fire protection.

Ausgehend hiervon liegt der Erfindung die Aufgabe zugrunde, einen Lagertank zu entwickeln, der sich auf einfache Weise herstellen läßt und eine hohe Feuerwiderstandsfähigkeit und Lecksicherheit gewährleistet.Proceeding from this, the invention is based on the object to develop a storage tank based on easy to manufacture and high fire resistance and guaranteed leakage.

Zur Lösung dieser Aufgabe wird die im Patentanspruch 1 angegebene Merkmalskombination vorgeschlagen. Die abhängigen Ansprüche enthalten vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung.To solve this problem is the in claim 1 specified combination of features proposed. The dependent ones Claims contain advantageous refinements and developments of the invention.

Eine besonders vorteilhafte Bauweise sieht vor, daß der Innenbehäler seiner Grundform nach zylindrisch ausgebildet und koaxiai mit dem Außenbehälter angeordnet ist, wobei der Brandschutzmantei den Innenbehälter mantelseitig umschließt. Eine weitere Verbesserung auch im Hinblick auf platzsparende Raumausnutzung kann dadurch erzielt werden, daß der Auffangbehälter topfförmig ausgebildet ist und daß der Innenbehälter sowie der Brandschutzmantel stehend in dem Auffangbehälter angeordnet sind. Günstig ist es auch, wenn der Brandschutzmantel aus Stahlblech ausgebildet ist.A particularly advantageous design provides that the Inner container of its basic shape cylindrical and koaxiai arranged with the outer container is, the fire protection mantle the inner container on the jacket side encloses. Another improvement also in With regard to space-saving use of space can achieved that the collecting container is cup-shaped and that the inner container and the fire protection jacket arranged standing in the collecting container are. It is also beneficial if the fire protection jacket made of sheet steel is trained.

Gemäß einer weiteren bevorzugten Ausgestaltung der Erfindung besteht der Brandschutzmantel aus mehreren sich in Umfangsrichtung zu einer um den Innenbehälter umlaufenden Ummantelung ergänzenden Mantelsegmenten, die unter Umfangserweiterung der Ummantelung gegeneinander verschiebbar sind. Durch diese Maßnahmen wird erreicht, daß selbst bei thermischer Verformung des Innenbehälters die Gefahr einer durch anpressenden wärmeleitenden Kontakt zu dem Brandschutzmantel bedingten lokalen Überhitzung verringert wird. Um den Brandschutzmantel stets in sich geschlossen zu halten, ist es von Vorteil, wenn sich benachbarte Mantelsegmente des Brandschutzmantels an ihren in axialer Richtung des Innenbehälters verlaufenden Längsrandstreifen flach gegeneinander anliegend überlappen. Ein für quadratische bzw. rechteckige Behälterquerschnitte geeigneter Brandschutzmantel läßt sich dadurch realisieren, daß vier im Querschnitt rechtwinklige Mantelsegmente vorgesehen sind, die sich an den freien Längsrändern ihrer Schenkel unter Bildung einer im Umriß quadratischen oder rechteckigen Ummantelung paarweise überlappen.According to a further preferred embodiment of the invention the fire protection jacket consists of several ones in the circumferential direction to a rotating around the inner container Sheathing complementary shell segments that under Expansion of the casing against each other are movable. Through these measures it is achieved that even with thermal deformation of the inner container the risk of a pressing heat-conducting Contact the local fire protection jacket Overheating is reduced. To the fire protection coat it is always an advantage to keep it closed if there are adjacent jacket segments of the fire protection jacket at their in the axial direction of the inner container longitudinal stripes running flat against each other overlap. One for square or rectangular container cross-sections suitable fire protection jacket can be realized in that four in Cross section of rectangular shell segments provided are located on the free longitudinal edges of their thighs forming a square or in outline overlap the rectangular casing in pairs.

Vorteilhafterweise wird das Aufweiten des Brandschutzmantels dadurch ermöglicht, daß die Mantelsegmente durch Führungselemente in der Überlappungsebene der Längsrandstreifen senkrecht zu deren Längsrichtung gegeneinander verschiebbar geführt sind. In einer besonders einfachen Bauweise sind die Führungselemente durch im Querschnitt U-förmige Haltebleche gebildet, welche an den oberen und unteren Stirnkanten der Mantelsegmente die sich überlappenden Längsrandstreifen stirnseitig umgreifen.The expansion of the fire protection jacket is advantageous thereby allowing the shell segments through guide elements in the overlap plane of the Longitudinal edge strips perpendicular to their longitudinal direction against each other are guided. In one particularly simple construction are the guide elements formed in cross section U-shaped holding plates, which on the upper and lower front edges of the jacket segments the overlapping longitudinal edge strips on the front reach around.

Herstellungstechnisch ist es günstig, wenn der Innenbehälter und der Auffangbehälter als Blasformteile vorzugsweise aus Polyethylen ausgebildet sind.In terms of production technology, it is favorable if the inner container and the collecting container preferably as blow molded parts are made of polyethylene.

Für eine platzsparende Raumausnutzung insbesondere bei Blockaufstellung mehrerer Tanks ist es vorteilhaft, wenn der Innenbehälter, der Brandschutzmantel und der Auffangbehälter eine im Querschnitt quadratische oder rechteckige Zylinderform aufweisen. Zur Erhöhung der Eigenstabilität können der Innenbehälter und der Auffangbehälter jeweils mehrere in axialer Richtung im Abstand voneinander angeordnete, umlaufende nutförmige Einzüge aufweisen. For space-saving use of space in particular Block placement of several tanks, it is advantageous if the inner container, the fire protection jacket and the Collection container a square or in cross section have a rectangular cylindrical shape. To increase the The inner container and the collecting container can have inherent stability several each in the axial direction at a distance mutually arranged, circumferential groove-shaped Have indents.

Vorteilhafterweise ist der Auffangbehälter unter stoffdichter Begrenzung des Zwischenraums mit dem Innenbehälter verbunden, und es ist ein Leckwarngerät vorgesehen, das einen in den Zwischenraum eingreifenden Lecksensor aufweist. Um das Auftreten eines Lecks sowohl an dem Innenbehälter als auch dem Auffangbehälter detektieren zu können, kann das Leckwarngerät Mittel zur Erzeugung eines Unterdrucks in dem Zwischenraum aufweisen, wobei der Lecksensor zur Erfassung eines leckbedingten Druckausgleichs als Druckfühler ausgebildet ist.The collecting container is advantageously less dense Limiting the space with the inner container connected and a leak detector is provided the one leak sensor engaging in the space having. To both the occurrence of a leak detect the inner container as well as the collecting container To be able to, the leak detector can generate means have a negative pressure in the intermediate space, the leak sensor for detecting a leak-related Pressure compensation designed as a pressure sensor is.

Im folgenden wird die Erfindung anhand eines in der Zeichnung in schematischer Weise dargestellten Ausführungsbeispiels näher erläutert. Es zeigen

Fig. 1
einen Lagertank für brennbare Flüssigkeiten in einem Vertikalschnitt;
Fig. 2
einen Horizontalschnitt des Lagertanks entlang der Schnittlinie 2-2 der Fig. 1;
Fig. 3 und 4
ein Mantelsegment eines Brandschutzmantels des Lagertanks in einer Seitenansicht und in der Draufsicht;
Fig. 5 und 6
ein Halteblech an der Oberkante zweier sich überlappender Mantelsegmente des Brandschutzmantels in einer Seitenansicht und einem Vertikalschnitt.
The invention is explained in more detail below with reference to an exemplary embodiment shown schematically in the drawing. Show it
Fig. 1
a storage tank for flammable liquids in a vertical section;
Fig. 2
a horizontal section of the storage tank along the section line 2-2 of Fig. 1;
3 and 4
a jacket segment of a fire protection jacket of the storage tank in a side view and in plan view;
5 and 6
a holding plate on the upper edge of two overlapping jacket segments of the fire protection jacket in a side view and a vertical section.

Der in der Zeichnung dargestellte Lagertank dient zur Bevorratung von Heizöl und besteht im wesentlichen aus einem Innenbehälter 10 zur Aufnahme des Heizöls, einem den Innenbehälter 10 unter Freihaltung eines Spalt- bzw. Zwischenraums 12 aufnehmenden Auffangbehälter 14 zur Lecksicherung und einem in dem Zwischenraum angeordneten feuerbeständigen Brandschutzmantel 16 zur Abschirmung des Innenbehälters 10 im Brandfall.The storage tank shown in the drawing is used for Storage of heating oil and consists essentially of an inner container 10 for holding the heating oil, one the inner container 10 while keeping a gap or Intermediate 12 collecting container 14th for leakage protection and one arranged in the intermediate space fire-resistant fire protection jacket 16 for shielding of the inner container 10 in the event of a fire.

Der Innenbehälter 10 und der Auffangbehälter 14 bestehen als dünnwandige Blasformteile aus Kunststoff, zweckmäßig aus Polyethylen. Beide Behälter 10,14 sind mit quadratischem, in den Ecken abgerundetem Querschnitt im wesentlichen zylindrisch ausgebildet und stehend koaxial miteinander angeordnet. Zur Erhöhung der Formsteifigkeit bzw. der statischen Belastbarkeit sind die Behälter 10,14 in ihrem Fußbereich 18 bzw. 20 zu ihrem Boden hin verjüngt und an ihren Seitenwänden 22,24 über deren Höhe verteilt mit nutartigen Umfangseinzügen 26,28 versehen. Der topfförmige, im Vertikalschnitt U-förmig ausgebildete Außenbehälter 14 ist an seiner Oberkante 30 unter gasdichter Begrenzung des Zwischenraums 12 mit dem Innenbehälter 10 verbunden. Aufgrund seines quadratischen Umrisses läßt sich der Lagertank modulartig mit weiteren Tanks als Batterietank kombinieren, wobei die einzelnen Lagertanks mittels einer nicht gezeigten Verrohrung über Anschlußstutzen 32 an der oberen, von dem Auffangbehälter 14 nicht umschlossenen Stirnwandung 34 der Innenbehälter 10 miteinander verbindbar sind. Ein verschließbarer Füllstutzen 36 an der Stirnwandung 34 ermöglicht das Befüllen des Innenbehälters 10.The inner container 10 and the collecting container 14 exist as thin-walled blow molded parts made of plastic, expediently made of polyethylene. Both containers are 10.14 with a square cross-section rounded in the corners essentially cylindrical and standing coaxially with each other. To increase the rigidity or the static load capacity are the containers 10, 14 in their foot region 18 or 20 tapered to the bottom and on its side walls 22.24 distributed over their height with groove-like circumferential indentations 26.28 provided. The cup-shaped, in vertical section U-shaped outer container 14 is on its upper edge 30 with gastight limitation of Interspace 12 connected to the inner container 10. Due to its square outline, the Storage tank in modular form with additional tanks as a battery tank combine, the individual storage tanks by means of a piping, not shown, over connecting pieces 32 on the upper one, from the collecting container 14 not enclosed end wall 34 of the inner container 10 are interconnectable. A lockable Filling nozzle 36 on the end wall 34 enables this Filling the inner container 10.

Der in dem Zwischenraum 12 angeordnete Brandschutzmantel 16 umschließt den Innenbehälter 10 konzentrisch und liegt dabei eng an dessen Seitenwandung 22 an. Um den Raumbedarf des Lagertanks bei gegebenem Fassungsvermögen gering zu halten, umschließt auch der Außenbehälter 14 mit seiner Seitenwandung 24 den Brandschutzmantel 16 mit geringem Abstand, so daß der Zwischenraum 12 ein geringes Spaltmaß aufweist. Der Brandschutzmantel 16 besteht aus mehreren Mantelsegmenten 38, die unter Umfangserweiterung gegeneinander verschiebbar sind. Wie aus Fig. 2 ersichtlich, sind hierzu vier im Querschnitt rechtwinklig gebogene Mantelsegmente 38 vorgesehen, die sich an Längsrandstreifen 40,40' ihrer einander paarweise zugewandten Schenkel 42 unter Bildung einer im Umriß quadratischen Ummantelung flach überlappen. Zur Anpassung an die Kontur des Innenbehälters 10 sind die aus Stahlblech bestehenden Mantelsegmente 38 an einem unteren Fußabschnitt 44 unter Verringerung der Schenkellänge schräg abgebogen (Fig. 3,4). Es sind im Querschnitt U-förmige Haltebleche 46 vorgsehen, tebleche 46 vorgesehen, die an den oberen und unteren Stirnkanten der Mantelsegmente 38 die sich überlappenden Längsrandstreifen 40,40' stirnseitig umgreifen. Damit läßt sich der Brandschutzmantel 16 auf einfache Weise ohne weitere Verbindungsmittel als selbsthaltende Konstruktion zusammenfügen, wobei die Mantelsegmente 38 in den durch die Haltebleche 46 gebildeten Führungen begrenzt gegeneinander beweglich bleiben.The fire protection jacket arranged in the intermediate space 12 16 concentrically encloses the inner container 10 and lies closely against its side wall 22. To the Space requirements of the storage tank for a given capacity The outer container also encloses to keep it low 14 with its side wall 24 the fire protection jacket 16 with a small distance, so that the space 12 a has a small gap. The fire protection jacket 16 consists of several shell segments 38, which are expanded are mutually displaceable. How 2, four are in cross section provided at right angles bent shell segments 38 on the longitudinal edge strips 40, 40 'of each other in pairs facing leg 42 forming an im Outline square outline overlap. For Adaptation to the contour of the inner container 10 are the made of sheet steel jacket segments 38 on one lower foot portion 44 while reducing the leg length bent obliquely (Fig. 3,4). There are U-shaped retaining plates 46 in cross section, Sheets 46 provided on the upper and lower Front edges of the jacket segments 38 which overlap Grip the longitudinal edge strips 40, 40 'on the front. In order to the fire protection jacket 16 can be easily Way without further connecting means than self-retaining Assemble the construction, the jacket segments 38 in the guides formed by the holding plates 46 limited mobility against each other.

Ein zur Lecküberwachung des Lagertanks bestimmtes Leckwarngerät 48 weist einen in den Zwischenraum 12 eingreifenden Lecksensor 50 auf, der als Druckfühler ausgebildet ist. Mittels des Leckwarngeräts 48 läßt sich zweckmäßig intermittierend ein Unterdruck in dem Zwischenraum 12 erzeugen, der bei einer Leckage des Innenbehälters 10 oder Undichtigkeit des Außenbehälters 14 rasch ausgeglichen wird. Ein solcher Druckausgleich wird mittels des Druckfühlers 50 erfaßt und über das Leckwarngerät 48 optisch und/oder akustisch angezeigt.A leak warning device intended for leak monitoring of the storage tank 48 has one engaging in the intermediate space 12 Leak sensor 50, which is designed as a pressure sensor is. By means of the leak warning device 48 can A vacuum in the intermediate space is expediently intermittent Generate 12 in the event of a leak in the inner container 10 or leakage of the outer container 14 is quickly compensated. Such pressure equalization is detected by the pressure sensor 50 and the Leak warning device 48 displayed optically and / or acoustically.

Im Brandfall schmilzt zunächst der Außenbehälter 14 unter externer Hitzeinwirkung ab und legt dabei den selbsttragenden Brandschutzmantel 16 frei. Dieser sorgt vor allem als Strahlungsschild für eine erhebliche Verringerung der auf den Innenbehälter 10 übertragenen thermischen Energie. Bei fortwährender Erwärmung verformt sich zwar der Innenbehälter 10 infolge der abnehmenden Strukturfestigkeit des Kunststoffmaterials unter dem Druck der Flüssigkeitsfüllung. Dabei werden jedoch die Mantelsegmente 38 unter Verringerung der Überlappungsbereiche ihrer Längsrandstreifen 40,40' auseinandergeschoben, so daß die Anpreßkraft des Innenbehälters 10 gegen den Brandschutzmantel 16 gering gehalten wird. Auf diese Weise läßt sich die Wärmeleitung zwischen dem Brandschutzmantel 14 und dem Innenbehälter 10 auch bei längerer Branddauer wirkungsvoll reduzieren.In the event of a fire, the outer container 14 melts first external heat exposure and thereby the self-supporting fire protection jacket 16 free. This ensures especially as a radiation shield for a significant reduction the transferred to the inner container 10 thermal energy. Deformed with continued warming the inner container 10 as a result of the decreasing Structural strength of the plastic material under the pressure of the liquid filling. In doing so, however the jacket segments 38 while reducing the overlap areas their longitudinal edge strips 40, 40 'pushed apart, so that the contact pressure of the inner container 10 against the fire protection jacket 16 is kept low. In this way, the heat conduction between the Fire protection jacket 14 and the inner container 10 also Reduce the duration of the fire effectively.

Claims (14)

  1. Storage tank for combustible liquids, in particular heating oil, waste oil, lubricating oil or diesel fuel, having an inner container (10) made of plastic which can be filled with the liquid, a collecting container (14), which receives the inner container (10) while keeping an intervening space (12) clear and consists of plastic, for making the said inner container leakproof, and a fireproof fire protection jacket (16), characterised in that the said fire protection jacket (16) is constructed, as a self-supporting casing, from a sheet-metal material reflecting heat radiation, and is disposed in the intervening space (12) for the purpose of screening the inner container (10) against heat radiation.
  2. Storage tank according to claim 1, characterised in that the inner container (10) is of cylindrical construction, as to its basic shape, and is disposed coaxially with the collecting container (14), and that the fire protection jacket (16) encloses the inner container (10) on the convex surface side.
  3. Storage tank according to claim 2, characterised in that the collecting container (14) is of pot-shaped construction, and that the inner container (10) and also the fire protection jacket (16) are disposed, standing on one end face, in the collecting container (14).
  4. Storage tank according to one of claims 1 to 3, characterised in that the fire protection jacket (16) is constructed from sheet steel.
  5. Storage tank according to one of claims 2 to 4, characterised in that the fire protection jacket (16) consists of a number of jacket segments (38) which complement one another in the peripheral direction to form a casing extending round the inner container (10) and which can be displaced in relation to one another, thereby enlarging the periphery of the said casing.
  6. Storage tank according to claim 5, characterised in that adjoining jacket segments (38) belonging to the fire protection jacket (16) overlap, in such a way as to lie flat against one another, at their longitudinal edge strips (40, 40') which extend in the axial direction of the inner container (10).
  7. Storage tank according to one of claims 1 to 6, characterised in that the fire protection jacket (16) has four jacket segments (38) which are rectangular in cross-section and which overlap in pairs at the free longitudinal edges of their side pieces (42), thereby forming a casing which is square or rectangular in outline.
  8. Storage tank according to one of claims 5 to 7, characterised in that the jacket segments (38) are guided by guide elements (46) so as to be displaceable in relation to one another in the plane of overlap of the longitudinal edge strips (40, 40'), perpendicularly to the longitudinal direction thereof.
  9. Storage tank according to claim 8, characterised in that the guide elements are formed by metal retaining sheets (46) which are U-shaped in cross-section and which engage, at the upper and lower end face edges of the jacket segments (38), round the overlapping longitudinal edge strips (40, 40') at the end faces.
  10. Storage tank according to one of claims 1 to 9, characterised in that the inner container (10) and the collecting container (14) are constructed, preferably from polyethylene, as blow-moulded parts.
  11. Storage tank according to one of claims 1 to 10, characterised in that the inner container (10), the fire protection jacket (16) and the collecting container (14) have a cylindrical shape which is square or rectangular in cross-section.
  12. Storage tank according to one of claims 1 to 11, characterised in that the inner container (10) and the collecting container (14) have, in each case, a number of circumferential groove-shaped indentations (26, 28) disposed at a distance from one another in the axial direction.
  13. Storage tank according to one of claims 1 to 12, characterised in that the collecting container (14) is connected to the inner container (10) with substance-tight delimitation of the intervening space (12), and that a leak warning appliance (48) is provided which has a leak sensor (50) operating in the intervening space (12).
  14. Storage tank according to claim 13, characterised in that the leak warning appliance (48) has means for generating a subatmospheric pressure in the intervening space (12), and that the leak sensor is constructed as a pressure transducer (50).
EP98114396A 1997-09-13 1998-07-31 Storage tank Expired - Lifetime EP0901972B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19740374 1997-09-13
DE19740374 1997-09-13

Publications (2)

Publication Number Publication Date
EP0901972A1 EP0901972A1 (en) 1999-03-17
EP0901972B1 true EP0901972B1 (en) 1999-11-03

Family

ID=7842298

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98114396A Expired - Lifetime EP0901972B1 (en) 1997-09-13 1998-07-31 Storage tank

Country Status (5)

Country Link
EP (1) EP0901972B1 (en)
AT (1) ATE186275T1 (en)
DE (1) DE59800043D1 (en)
ES (1) ES2139470T3 (en)
PT (1) PT901972E (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2804667A1 (en) 2000-02-09 2001-08-10 Roth Werke Gmbh COMBUSTIBLE FLUIDS STORAGE TANK
DE10061324A1 (en) * 2000-12-08 2002-07-04 Schuetz Gmbh & Co Kgaa Tank for heating oil comprises inner metal or plastic container and outer metal container with metal lining which reflects radiant heat, outer wall of outer container being reinforced with rows of small depressions

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10005984A1 (en) * 2000-02-09 2001-08-30 Roth Werke Gmbh Storage tank for combustible fluid media, comprises a container whose walls consist of an inner plastic layer and an outer fire protection layer.
DE20120169U1 (en) * 2001-12-13 2002-03-28 Schuetz Gmbh & Co Kgaa Storage containers for liquids

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29602097U1 (en) * 1995-02-15 1996-04-04 Werit Kunststoffwerke W Schnei Tank for storing liquids, especially flammable liquids

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5103996A (en) * 1989-03-31 1992-04-14 Lrs, Inc. Fire resistant tank construction
DE4000442A1 (en) * 1990-01-09 1991-07-11 Held & Francke Bau Ag Storage tank for liq. fuels below ground - has concrete shell with steel inner wall and complex lining that has two leakage spaces monitored by vacuum indicators
AT399323B (en) * 1991-06-27 1995-04-25 Leitl Beton Gmbh TANK, ESPECIALLY SPHERICAL TANK
US5282546A (en) * 1993-07-15 1994-02-01 Hoover Group, Inc. Composite above ground liquid storage vault

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29602097U1 (en) * 1995-02-15 1996-04-04 Werit Kunststoffwerke W Schnei Tank for storing liquids, especially flammable liquids

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2804667A1 (en) 2000-02-09 2001-08-10 Roth Werke Gmbh COMBUSTIBLE FLUIDS STORAGE TANK
EP1123878A2 (en) * 2000-02-09 2001-08-16 Roth Werke GmbH Storage tank especially for inflammable fluid
DE10061324A1 (en) * 2000-12-08 2002-07-04 Schuetz Gmbh & Co Kgaa Tank for heating oil comprises inner metal or plastic container and outer metal container with metal lining which reflects radiant heat, outer wall of outer container being reinforced with rows of small depressions

Also Published As

Publication number Publication date
ES2139470T3 (en) 2000-02-01
ATE186275T1 (en) 1999-11-15
PT901972E (en) 2000-04-28
DE59800043D1 (en) 1999-12-09
EP0901972A1 (en) 1999-03-17

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