EP0728679A1 - Access shaft with a covermember for an underground tank - Google Patents

Access shaft with a covermember for an underground tank Download PDF

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Publication number
EP0728679A1
EP0728679A1 EP96102621A EP96102621A EP0728679A1 EP 0728679 A1 EP0728679 A1 EP 0728679A1 EP 96102621 A EP96102621 A EP 96102621A EP 96102621 A EP96102621 A EP 96102621A EP 0728679 A1 EP0728679 A1 EP 0728679A1
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EP
European Patent Office
Prior art keywords
dome shaft
collecting device
cover
upper edge
sealing element
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Granted
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EP96102621A
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German (de)
French (fr)
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EP0728679B1 (en
Inventor
Erwin Bald
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Individual
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Individual
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Priority claimed from DE19603920A external-priority patent/DE19603920C2/en
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    • 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
    • B65D90/10—Manholes; Inspection openings; Covers therefor
    • B65D90/105—Manholes; Inspection openings; Covers therefor for underground containers

Definitions

  • the invention relates to a dome shaft with a dome shaft cover and into this integrated lid with a collecting device lined for collecting leakage liquids, which extends in a funnel shape from top to bottom and is placed sealingly around pipes which open into a storage container for fuels, heating oils or the like , wherein the collecting device is held with its upper edge by holding elements and there is a free distance between the upper edge and the manhole cover.
  • this water accumulation is due to the formation of condensation in the area of the cathedral shaft.
  • the dome shaft is not airtight against the atmosphere and represents a depression into which moist air can flow, which cools down on the cold parts of the dome shaft. The consequence of this is the formation of condensation on the walls, pipes and the cover.
  • a further contributor to the formation of condensation is that the liquid present in the soil evaporates upward within the dome shaft and is also deposited on the walls and the cover of the dome shaft. This condensed water drips off and collects at the bottom of the cathedral shaft or, if this is lined with a collecting bag, in this.
  • a collecting device is known from US Pat. No. 5,114,271, which consists of a dome shaft casing in which a collecting device which retains sloppy losses is installed.
  • the collecting device is made up of several parts and enables separator losses and water to be separated by a separator and both liquids to be supplied to the corresponding storage containers.
  • the formation of condensation is due to the one-piece design of the dome wall and the sealing on it seated lid largely avoided. Ingress of moisture from below is effectively prevented by a bellows-shaped seal in the dome shaft, which seals around the pipes leading into the tank.
  • the known device does not allow retrofitting of existing dome shafts, which could make the advantages of the above-mentioned device also available to existing systems. If the known device is to be used in existing systems, the dome shaft must be excavated. The old pipelines must be replaced by new ones, which is associated with considerable costs even when the tank is empty, since precautions must be taken against gas formation and the associated explosion risk.
  • a dome shaft of the type described in the introduction in that in the region of the free distance between the upper edge of the The collecting device and the dome shaft cover, which is provided with a tightly closing cover, are inserted a self-contained hollow cylindrical thin-walled sealing element, the end sides of the sealing element sealingly interacting both with the upper edge of the collecting device and with the underside of the dome shaft cover.
  • the invention it is possible to retrofit existing dome shafts for underground tanks without major earthwork and welding work so that on the one hand surface water cannot penetrate due to the tightly closing lid and on the other hand condensation inside the lid, which could then drip into the funnel-shaped collecting device, reliably is prevented because the hollow cylindrical apron-shaped sealing element tightly separates the inside of the cover and the funnel-shaped collecting device from the interior of the dome shaft, so that moisture in the dome shaft cannot penetrate into this area.
  • the retrofitting is particularly simple since only the hollow cylindrical sealing element has to be installed without having to make changes to the dome shaft itself.
  • the hollow cylindrical thin-walled sealing element consists of a plate which an opening which is dimensioned such that the downwardly projecting inner edge of the opening approximately meets the upper edge of the collecting device, and has a circumferential jacket on the outer contour of the plate, which sits on the plate and is firmly and tightly connected to it , the height of which corresponds approximately to that of the free distance.
  • a circumferential sealing lip is attached to the upper edge of the casing and connecting elements are provided distributed over the circumference of the casing, which can be connected to the manhole cover.
  • the connecting elements are tabs that can be screwed to the dome shaft cover under the influence of tension.
  • the connecting elements are hook screws with counterparts cooperate on the collecting device, such that they form the holding elements for the collecting device. Additional holding elements for the collecting device are then not necessary, the collecting device is connected and held by the hollow cylindrical sealing element with the dome shaft cover.
  • the dome shaft cover is reinforced by a circumferential girder on which the jacket of the sealing element is tightly circumferential.
  • a preferably double-walled fuel storage container 1 is provided with a filling dome 2, which is closed off by a dome cover 3.
  • a fill tube 4 and a dip tube 5 provided with a mechanical dipstick extend through the dome cover 3 as well as possibly other devices, which are identified by way of example with the reference number 6.
  • the reservoir 1 is also connected to fuel lines, vents, not shown, etc.
  • a dome shaft 7 is bricked or concreted and covered on the upper side with a cover frame 8, preferably made of concrete, which is part of the dome shaft cover.
  • the dome shaft cover also has a shaft frame 9, preferably made of steel, which is inserted on the inside into the cover frame.
  • a manhole cover 10 protruding slightly above the top of the terrain is mounted in the manner described in more detail below.
  • a funnel-shaped collecting device preferably a flexible and leakage-resistant collecting bag 11 is arranged, which is formed with sleeves 12, 13 which are rolled up like a bellows, each of which is fixed with a preferably reinforced opening edge with a fastening clamp 14 or the like Figure 1 can be seen.
  • the funnel-shaped collecting bag 11 is thus tight on the bottom side and delimited on the upper side by an upper edge 15 which is held by holding elements which will be explained in more detail below.
  • the upper edge 15 of the collecting bag 11 is arranged so that there is a free distance between the upper edge 15 and the manhole cover, this area of the free distance is designated by 16.
  • the manhole cover 10 is inserted into the manhole frame 9 in a watertight manner.
  • the manhole cover 10 has an annular outer cover 17 which is inserted firmly and tightly into the manhole frame 9, it preferably having a circumferential girder 18 on the underside.
  • the outer cover 17 can be fastened to the manhole frame 9 in various ways; in the exemplary embodiment shown, it is welded to the manhole frame 9.
  • Top the outer cover 17 has an edge 19 which can be ramp-shaped, the slope of the ramp being adapted to a ramp-shaped outer edge 20 of the manhole cover 10.
  • the outer cover 17 has a further circumferential edge 21 which projects beyond the level of the top edge of the terrain and prevents liquid from entering the dome shaft 7 from the outside when the manhole cover 10 is closed, ie the manhole cover 10 is designed to be tightly closing, further sealing elements can also be provided.
  • a self-contained hollow cylindrical apron-shaped thin-walled sealing element 22 is arranged in the area 16 of the free distance between the manhole cover.
  • This sealing element is shown in detail in Figures 2 to 4.
  • the sealing element 22 preferably consists of a plate 23 which has an opening 24 which is dimensioned such that its inner edge 25 protruding downward coincides approximately with the upper edge 15 of the collecting bag 11, and a cylindrical jacket which runs around the outer contour of the plate 23 26 has, which sits on the plate 23 or is integrally formed with it and thus firmly and tightly with this is connected, wherein the height of the jacket 26 corresponds approximately to that of the free distance 16.
  • a circumferential sealing lip is attached and, distributed around the circumference of the jacket 26, connecting elements are provided which are designed as tabs 27 and are used for fastening to the manhole cover, ie in the exemplary embodiment on the beam 18.
  • the tabs 27 can be designed to be screwed to the beam 18, for example under the action of tension.
  • the downwardly projecting inner edge 25 of the plate 23 engages over the upper edge 15 of the collecting bag 11 to the inside and is connected to the collecting bag 11 by means of connecting elements which are designed, for example, as hook screws 28 which can be inserted through bores 29 in the plate 23 of the sealing element 22 .
  • These hook screws 28 interact with counterparts on the collecting bag 11, namely preferably with fastening rings 30, 31.
  • These hook screws 29 therefore not only serve for the connection between the sealing element 22 and the collecting bag 11, but also as holding elements for the collecting bag 11.
  • the dome shaft cover can thus be seen to be tightly connected to the collecting bag 11 via the sealing element 16.
  • condensation forms in the cathedral shaft do not knock down on the manhole cover or on the manhole cover 10 and cannot get into the collecting bag 11, so that no water penetrates into the collecting bag 11.
  • a bypass line not shown.
  • the invention is not limited to the exemplary embodiments shown. Further configurations are possible without leaving the basic idea.
  • the sealing element 22 can of course also be designed in a different way, but it is essential that the sealing element 22 establishes a tight connection between the manhole cover and the upper edge 15 of the collecting bag 11.
  • the collecting bag 11 can of course also, if this is necessary or expedient, be provided with its own holding elements which are independent of the sealing element and the like. More.

Abstract

The collector (11) extends in a funnel shape downwards and is placed around pipes (4,5) opening into a fuel, heating oil etc. storage container (1). The top rim (15) of the collector is held by holders, leaving a gap (16) between the rim and cover. A thin-walled hollow cylindrical enclosed sealing element (22) is positioned between the collector top rim and the cover with its tightly closing lid (10). The end sides of the sealing element seal the top rim of the collector and the underside of the dome shaft cover.

Description

Die Erfindung betrifft einen Domschacht mit einer Domschachtabdeckung und in diese integrierten Deckel mit einer zum Auffangen von Leckageflüssigkeiten ausgekleideten Auffangeinrichtung, die sich trichterförmig von oben nach unten erstreckt und dichtend um Rohre, die in einem Vorratsbehälter für Kraftstoffe, Heizöle oder dergl. münden, gelegt ist, wobei die Auffangeinrichtung mit ihrem oberen Rand von Halteelementen gehalten ist und zwischen dem oberen Rand und der Domschachtabdeckung ein freier Abstand besteht.The invention relates to a dome shaft with a dome shaft cover and into this integrated lid with a collecting device lined for collecting leakage liquids, which extends in a funnel shape from top to bottom and is placed sealingly around pipes which open into a storage container for fuels, heating oils or the like , wherein the collecting device is held with its upper edge by holding elements and there is a free distance between the upper edge and the manhole cover.

In der Vergangenheit wurden verschiedene Vorrichtungen bekannt, die das Betanken von Erdtanks sicherer gemacht haben. Aus der DE 40 17 534 A1 ist eine gattungsgemäße Vorrichtung bekannt, die zuverlässig Schlabberverluste, die beim Entfernen des Tankschlauches unvermeidlich sind, vermeidet. Bei dieser Vorrichtung ist ein flüssigkeitsdichter, flexibler Auffangsack im Bereich des Domschachtes angeordnet, der Restmengen der beim Betanken auslaufenden Flüssigkeit aufnimmt und über einen Bypass in den Erdtank leitet.Various devices have been known in the past which have made refueling underground tanks safer. From DE 40 17 534 A1 a generic device is known which reliably avoids sloppy losses which are inevitable when the tank hose is removed. In this device, a liquid-tight, flexible collecting bag is arranged in the region of the dome shaft, which absorbs residual amounts of the liquid escaping during refueling and guides it into the underground tank via a bypass.

Überraschenderweise hat sich gezeigt, daß sich trotz flüssigkeitsdichter Abdeckung des Domschachtes mit einem Deckel, der Oberflächenwasser zuverlässig zurückhält, im Auffangsack Wasser sammelt, das vor der nächsten Betankung aus dem Sack entfernt werden muß, da ein Vermischen mit Schlabberverlusten aus dem Tankschlauch unbedingt zu vermeiden ist.Surprisingly, it has been shown that despite the liquid-tight covering of the dome shaft with a lid that reliably retains surface water, water collects in the collecting sack, which must be removed from the sack before the next refueling, since mixing with sloppy losses from the tank hose must be avoided.

Diese Wasseransammlung hat, wie Untersuchungen gezeigt haben, ihre Ursache in der Kondenswasserbildung im Bereich des Domschachtes. In der Regel ist der Domschacht nicht luftdicht gegenüber der Atmosphäre abgeschlossen und stellt eine Senke dar, in die feuchte Luft einströmen kann, die sich an den kalten Teilen des Domschachtes abkühlt. Die Folge davon ist Kondenswasserbildung an den Wänden, Rohrleitungen und dem Deckel. Zur Kondenswasserbildung trägt weiter bei, daß die im Erdreich vorhandene Flüssigkeit innerhalb des Domschachtes nach oben abdampft und sich ebenfalls an den Wänden und dem Deckel des Domschachtes niederschlägt. Dieses Kondenswasser tropft ab und sammelt sich am Boden des Domschachtes oder, wenn dieser mit einem Auffangsack ausgekleidet ist, in diesem.As studies have shown, this water accumulation is due to the formation of condensation in the area of the cathedral shaft. As a rule, the dome shaft is not airtight against the atmosphere and represents a depression into which moist air can flow, which cools down on the cold parts of the dome shaft. The consequence of this is the formation of condensation on the walls, pipes and the cover. A further contributor to the formation of condensation is that the liquid present in the soil evaporates upward within the dome shaft and is also deposited on the walls and the cover of the dome shaft. This condensed water drips off and collects at the bottom of the cathedral shaft or, if this is lined with a collecting bag, in this.

Durch die US-PS 5,114,271 ist eine Auffangvorrichtung bekannt geworden, die aus einem Domschachtmantel besteht, in dem eine Schlabberverluste rückhaltende Auffangeinrichtung eingebaut ist. Die Auffangeinrichtung ist mehrteilig aufgebaut und ermöglicht über einen Abscheider Schlabberverluste und Wasser zu trennen und beide Flüssigkeiten entsprechenden Vorratsbehältern zuzuleiten. Kondenswasserbildung wird durch die einteilige Ausgestaltung der Domschachtwandung und des auf diesem dichtend aufsitzend angebrachten Deckels weitgehend vermieden. Eindringende Feuchtigkeit von unten wird durch eine faltenbalgförmige Abdichtung des Domschachtes, die sich dichtend um die in den Tank führenden Rohrleitungen legt, wirksam verhindert.A collecting device is known from US Pat. No. 5,114,271, which consists of a dome shaft casing in which a collecting device which retains sloppy losses is installed. The collecting device is made up of several parts and enables separator losses and water to be separated by a separator and both liquids to be supplied to the corresponding storage containers. The formation of condensation is due to the one-piece design of the dome wall and the sealing on it seated lid largely avoided. Ingress of moisture from below is effectively prevented by a bellows-shaped seal in the dome shaft, which seals around the pipes leading into the tank.

Eine Nachrüstung bestehender Domschächte, die die Vorteile der vorgenannten Vorrichtung auch bestehenden Anlagen zugänglich machen könnte, erlaubt die bekannte Vorrichtung nicht. Soll die bekannte Vorrichtung in bestehenden Anlagen zum Einsatz kommen, ist der Domschacht aufzugraben. Die alten Rohrleitungen müssen durch neue ersetzt werden, was auch bei entleertem Tank mit erheblichen Kosten verbunden ist, da gegen Gasbildung und die damit verbundenen Explosionsgefahr Vorkehrungen zu treffen sind.The known device does not allow retrofitting of existing dome shafts, which could make the advantages of the above-mentioned device also available to existing systems. If the known device is to be used in existing systems, the dome shaft must be excavated. The old pipelines must be replaced by new ones, which is associated with considerable costs even when the tank is empty, since precautions must be taken against gas formation and the associated explosion risk.

Es ist daher Aufgabe der vorliegenden Erfindung, eine Lösung anzugeben, die es ermöglicht, auch einen bestehenden Domschacht für Erdtanks ohne größere Erd- und Schweißarbeiten so auszurüsten, daß Oberflächenwasser nicht eindringen kann und Kondenswasserbildung im Inneren zuverlässig verhindert wird.It is therefore an object of the present invention to provide a solution which makes it possible to equip an existing dome shaft for underground tanks without major earthwork and welding work in such a way that surface water cannot penetrate and condensation inside is reliably prevented.

Diese Aufgabe wird bei einem Domschacht der eingangs bezeichneten Art erfindungsgemäß dadurch gelöst, daß in dem Bereich des freien Abstandes zwischen dem oberen Rand der Auffangeinrichtung und der mit einem dicht schließenden Deckel versehenen Domschachtabdeckung ein in sich geschlossenes hohlzylinderförmiges dünnwandiges Dichtelement eingelegt ist, wobei die Endseiten des Dichtelementes sowohl mit dem oberen Rand der Auffangeinrichtung als auch mit der Unterseite der Domschachtabdeckung dichtend zusammenwirken.This object is achieved according to the invention in a dome shaft of the type described in the introduction in that in the region of the free distance between the upper edge of the The collecting device and the dome shaft cover, which is provided with a tightly closing cover, are inserted a self-contained hollow cylindrical thin-walled sealing element, the end sides of the sealing element sealingly interacting both with the upper edge of the collecting device and with the underside of the dome shaft cover.

Mit der Erfindung ist es möglich, auch bestehende Domschächte für Erdtanks ohne größere Erd- und Schweißarbeiten so nachzurüsten, daß einerseits Oberflächenwasser aufgrund des dicht schließenden Deckels nicht eindringen kann und andererseits Kondenswasserbildung im Inneren des Deckels, welches dann in die trichterförmige Auffangeinrichtung abtropfen könnte, zuverlässig verhindert wird, weil durch das hohlzylinderförmige schürzenförmige Dichtelement das Innere des Deckels und die trichterförmige Auffangeinrichtung dicht vom Domschachtinnenraum abgetrennt werden, so daß im Domschacht befindliche Feuchtigkeit nicht in diesen Bereich eindringen kann. Die Nachrüstung gestaltet sich dabei besonders einfach, da lediglich das hohlzylinderförmige Dichtelement montiert werden muß, ohne Veränderungen am Domschacht selbst vornehmen zu müssen.With the invention, it is possible to retrofit existing dome shafts for underground tanks without major earthwork and welding work so that on the one hand surface water cannot penetrate due to the tightly closing lid and on the other hand condensation inside the lid, which could then drip into the funnel-shaped collecting device, reliably is prevented because the hollow cylindrical apron-shaped sealing element tightly separates the inside of the cover and the funnel-shaped collecting device from the interior of the dome shaft, so that moisture in the dome shaft cannot penetrate into this area. The retrofitting is particularly simple since only the hollow cylindrical sealing element has to be installed without having to make changes to the dome shaft itself.

Vorteilhaft ist vorgesehen, daß das hohlzylinderförmige dünnwandige Dichtelement aus einer Platte besteht, die eine Öffnung, welche so bemessen ist, daß der nach unten vorstehende Innenrand der Öffnung mit dem oberen Rand der Auffangeinrichtung in etwa zusammentrifft, und einen an der Außenkontur der Platte umlaufenden Mantel aufweist, der auf der Platte aufsitzt und mit dieser fest und dicht verbunden ist, wobei dessen Höhe in etwa der des freien Abstands entspricht.It is advantageously provided that the hollow cylindrical thin-walled sealing element consists of a plate which an opening which is dimensioned such that the downwardly projecting inner edge of the opening approximately meets the upper edge of the collecting device, and has a circumferential jacket on the outer contour of the plate, which sits on the plate and is firmly and tightly connected to it , the height of which corresponds approximately to that of the free distance.

Zur Erleichterung der Montage ist vorgesehen, daß auf dem oberen Rand des Mantels eine umlaufende Dichtlippe angebracht ist und am Umfang des Mantels verteilt Verbindungselemente vorgesehen sind, die mit der Domschachtabdeckung verbindbar sind.To facilitate assembly, it is provided that a circumferential sealing lip is attached to the upper edge of the casing and connecting elements are provided distributed over the circumference of the casing, which can be connected to the manhole cover.

Dabei ist vorteilhaft vorgesehen, daß die Verbindungselemente Laschen sind, die mit der Domschachtabdeckung unter Zugeinwirkung verschraubbar sind.It is advantageously provided that the connecting elements are tabs that can be screwed to the dome shaft cover under the influence of tension.

Um eine besonders dichte Verbindung zwischen dem Dichtelement und der Auffangeinrichtung zu gewährleisten, ist vorteilhaft vorgesehen, daß der nach unten vorstehende Innenrand der Platte die Auffangeinrichtung von innen übergreift und mit dieser mittels Verbindungselementen verbunden ist.In order to ensure a particularly tight connection between the sealing element and the collecting device, it is advantageously provided that the inner edge of the plate protruding downward engages over the collecting device from the inside and is connected to it by means of connecting elements.

Dabei ist ganz besonders vorteilhaft vorgesehen, daß die Verbindungselemente Hakenschrauben sind, die mit Gegenstücken an der Auffangeinrichtung zusammenwirken, derart, daß sie die Halteelemente für die Auffangeinrichtung bilden. Zusätzliche Halteelemente für die Auffangeinrichtung sind dann nicht erforderlich, die Auffangeinrichtung wird durch das hohlzylinderförmige Dichtelement mit der Domschachtabdeckung verbunden und gehalten.It is particularly advantageously provided that the connecting elements are hook screws with counterparts cooperate on the collecting device, such that they form the holding elements for the collecting device. Additional holding elements for the collecting device are then not necessary, the collecting device is connected and held by the hollow cylindrical sealing element with the dome shaft cover.

Weiterhin ist vorteilhaft vorgesehen, daß die Domschachtabdeckung durch einen umlaufenden Unterzug verstärkt ist, an welchen der Mantel des Dichtelementes umlaufend dicht anliegt.Furthermore, it is advantageously provided that the dome shaft cover is reinforced by a circumferential girder on which the jacket of the sealing element is tightly circumferential.

Die Erfindung ist nachstehend anhand der Zeichnung beispielsweise näher erläutert. Diese zeigt in:

Fig. 1
einen Vertikalschnitt durch einen erfindungsgemäß ausgebildeten Domschacht,
Fig. 2
eine Ansicht von oben auf ein hohlzylinderförmiges dünnwandiges Dichtelement,
Fig. 3
einen Schnitt gemäß der Linie III-III in Fig. 2 und
Fig. 4
einen Schnitt gemäß der Linie IV-IV in Fig. 2.
The invention is explained below with reference to the drawing, for example. This shows in:
Fig. 1
3 shows a vertical section through a cathedral shaft designed according to the invention,
Fig. 2
a view from above of a hollow cylindrical thin-walled sealing element,
Fig. 3
a section along the line III-III in Fig. 2 and
Fig. 4
a section along the line IV-IV in Fig. 2nd

Bei dem in Figur 1 wiedergegebenen Ausführungsbeispiel ist ein vorzugsweise doppelwandiger Kraftstoff-Vorratsbehälter 1 mit einem Fülldom 2 versehen, der durch einen Domdeckel 3 abgeschlossen ist. Durch den Domdeckel 3 erstrecken sich ein Füllrohr 4 und ein mit einem mechanischen Peilstab versehenes Peilrohr 5 sowie ggf. weitere Einrichtungen, die beispielhaft mit dem Bezugszeichen 6 gekennzeichnet sind. Der Vorratsbehälter 1 ist darüber hinaus mit nicht dargestellten Kraftstoffleitungen, Entlüftungen usw. verbunden.In the exemplary embodiment shown in FIG. 1, a preferably double-walled fuel storage container 1 is provided with a filling dome 2, which is closed off by a dome cover 3. A fill tube 4 and a dip tube 5 provided with a mechanical dipstick extend through the dome cover 3 as well as possibly other devices, which are identified by way of example with the reference number 6. The reservoir 1 is also connected to fuel lines, vents, not shown, etc.

Oberhalb des Fülldomes 2 ist ein Domschacht 7 gemauert oder betoniert und oberseitig mit einem Abdeckrahmen 8, vorzugsweise aus Beton, abgedeckt, der Bestandteil der Domschachtabdeckung ist. Die Domschachtabdeckung weist außerdem einen Schachtrahmen 9, vorzugsweise aus Stahl, auf, der innenseitig in den Abdeckrahmen eingesetzt ist. In dem Schachtrahmen 9 der Domschachtabdeckung ist in nachstehend noch näher beschriebener Weise ein etwas über die Geländeoberkante vorstehender Schachtdeckel 10 gelagert.Above the filling dome 2, a dome shaft 7 is bricked or concreted and covered on the upper side with a cover frame 8, preferably made of concrete, which is part of the dome shaft cover. The dome shaft cover also has a shaft frame 9, preferably made of steel, which is inserted on the inside into the cover frame. In the manhole frame 9 of the manhole cover, a manhole cover 10 protruding slightly above the top of the terrain is mounted in the manner described in more detail below.

Bis auf das Füllrohr 4 und das Peilrohr 5 sind oberhalb des Domdeckels 3 im wesentlichen keine weiteren mit dem Vorratsbehälter 1 verbundenen Einrichtungen angeordnet, so daß sich in diesem Bereich ein freier Raum erstreckt, in dem eine trichterförmige Auffangeinrichtung, vorzugsweise ein flexibler und leckageflüssigkeitsbeständiger Auffangsack 11, angeordnet ist, der mit vom Boden rollbalgartig hochgestülpten Manschetten 12, 13 ausgebildet ist, die jeweils mit einem vorzugsweise verstärkten Öffnungsrand mit einer Befestigungsschelle 14 oder dergl. dichtend am Füllrohr 4 bzw. Peilrohr 5 festgelegt wird, wie aus Figur 1 ersichtlich ist.Except for the filler pipe 4 and the leveling pipe 5, essentially no further devices connected to the storage container 1 are arranged above the dome cover 3, so that a free space extends in this area in which a funnel-shaped collecting device, preferably a flexible and leakage-resistant collecting bag 11 is arranged, which is formed with sleeves 12, 13 which are rolled up like a bellows, each of which is fixed with a preferably reinforced opening edge with a fastening clamp 14 or the like Figure 1 can be seen.

Der trichterförmige Auffangsack 11 ist somit bodenseitig dicht ausgebildet und oberseitig von einem oberen Rand 15 begrenzt, der von nachfolgend noch näher erläuterten Halteelementen gehalten ist. Dabei ist der obere Rand 15 des Auffangsackes 11 so angeordnet, daß zwischen dem oberen Rand 15 und der Domschachtabdeckung ein freier Abstand besteht, dieser Bereich des freien Abstandes ist mit 16 bezeichnet.The funnel-shaped collecting bag 11 is thus tight on the bottom side and delimited on the upper side by an upper edge 15 which is held by holding elements which will be explained in more detail below. The upper edge 15 of the collecting bag 11 is arranged so that there is a free distance between the upper edge 15 and the manhole cover, this area of the free distance is designated by 16.

Um den Domschacht 7 bzw. insbesondere den Auffangsack 11 nach oben abzudichten, ist der Schachtdeckel 10 wasserdicht in den Schachtrahmen 9 eingesetzt. Dazu weist bei dieser Ausführungsform der Schachtdeckel 10 einen ringförmigen Außendeckel 17 auf, der fest und dicht in den Schachtrahmen 9 eingesetzt ist, wobei er vorzugsweise unterseitig einen umlaufenden Unterzug 18 aufweist. Der Außendeckel 17 kann auf verschiedene Weise am Schachtrahmen 9 befestigt sein, beim dargestellten Ausführungsbeispiel ist er an den Schachtrahmen 9 angeschweißt. Oberseitig weist der Außendeckel 17 einen Rand 19 auf, der rampenförmig ausgebildet sein kann, wobei die Steigung der Rampe an einen rampenförmigen Außenrand 20 des Schachtdeckels 10 angepaßt ist. Innenseitig weist der Außendeckel 17 einen weiteren umlaufenden Rand 21 auf, der über das Niveau der Geländeoberkante hinausragt und verhindert, daß bei geschlossenem Schachtdeckel 10 Flüssigkeit von außen in den Domschacht 7 eintreten kann, d.h. der Schachtdeckel 10 ist dicht schließend ausgebildet, hier können ggf. auch noch weitere Dichtelemente vorgesehen sein.In order to seal the dome shaft 7 or in particular the collecting bag 11 upwards, the manhole cover 10 is inserted into the manhole frame 9 in a watertight manner. For this purpose, in this embodiment the manhole cover 10 has an annular outer cover 17 which is inserted firmly and tightly into the manhole frame 9, it preferably having a circumferential girder 18 on the underside. The outer cover 17 can be fastened to the manhole frame 9 in various ways; in the exemplary embodiment shown, it is welded to the manhole frame 9. Top the outer cover 17 has an edge 19 which can be ramp-shaped, the slope of the ramp being adapted to a ramp-shaped outer edge 20 of the manhole cover 10. On the inside, the outer cover 17 has a further circumferential edge 21 which projects beyond the level of the top edge of the terrain and prevents liquid from entering the dome shaft 7 from the outside when the manhole cover 10 is closed, ie the manhole cover 10 is designed to be tightly closing, further sealing elements can also be provided.

Wesentlich für die Erfindung ist nun, daß im Bereich 16 des freien Abstandes zwischen der Domschachtabdeckung, im dargestellten Ausführungsbeispiel zwischen der Unterkante des Unterzuges 18, und dem oberen Rand 15 des Auffangsackes 11 ein in sich geschlossenes hohlzylinderförmiges schürzenförmiges dünnwandiges Dichtelement 22 angeordnet ist. Dieses Dichtelement ist im einzelnen in den Figuren 2 bis 4 dargestellt. Das Dichtelement 22 besteht bevorzugt aus einer Platte 23, welche eine Öffnung 24, welche so bemessen ist, daß ihr nach unten vorstehender Innenrand 25 mit dem oberen Rand 15 des Auffangsackes 11 in etwa zusammentrifft, und einen an der Außenkontur der Platte 23 umlaufenden zylinderförmigen Mantel 26 aufweist, der auf der Platte 23 aufsitzt bzw. einstückig mit dieser ausgebildet ist und somit fest und dicht mit dieser verbunden ist, wobei die Höhe des Mantels 26 etwa der des freien Abstandes 16 entspricht. Auf dem oberen Rand des Mantels 26 ist eine nicht dargestellte umlaufende Dichtlippe angebracht und am Umfang des Mantels 26 verteilt sind Verbindungselemente vorgesehen, die als Laschen 27 ausgebildet sind und zur Befestigung an der Domschachtabdeckung, d.h. beim Ausführungsbeispiel am Unterzug 18, dienen. Die Laschen 27 können beispielsweise unter Zugeinwirkung mit dem Unterzug 18 verschraubbar ausgebildet sein.It is essential for the invention that in the area 16 of the free distance between the manhole cover, in the exemplary embodiment shown between the lower edge of the beam 18 and the upper edge 15 of the collecting bag 11, a self-contained hollow cylindrical apron-shaped thin-walled sealing element 22 is arranged. This sealing element is shown in detail in Figures 2 to 4. The sealing element 22 preferably consists of a plate 23 which has an opening 24 which is dimensioned such that its inner edge 25 protruding downward coincides approximately with the upper edge 15 of the collecting bag 11, and a cylindrical jacket which runs around the outer contour of the plate 23 26 has, which sits on the plate 23 or is integrally formed with it and thus firmly and tightly with this is connected, wherein the height of the jacket 26 corresponds approximately to that of the free distance 16. On the upper edge of the jacket 26, a circumferential sealing lip, not shown, is attached and, distributed around the circumference of the jacket 26, connecting elements are provided which are designed as tabs 27 and are used for fastening to the manhole cover, ie in the exemplary embodiment on the beam 18. The tabs 27 can be designed to be screwed to the beam 18, for example under the action of tension.

Der nach unten vorstehende Innenrand 25 der Platte 23 übergreift den oberen Rand 15 des Auffangsackes 11 nach innen und ist mit dem Auffangsack 11 mittels Verbindungselementen verbunden, die beispielsweise als Hakenschrauben 28 ausgebildet sind, welche durch Bohrungen 29 in der Platte 23 des Dichtelementes 22 hindurchsteckbar sind. Diese Hakenschrauben 28 wirken mit Gegenstücken am Auffangsack 11 zusammen, nämlich vorzugsweise mit Befestigungsringen 30, 31. Diese Hakenschrauben 29 dienen somit nicht nur zur Verbindung zwischen dem Dichtelement 22 und dem Auffangsack 11, sondern gleichzeitig auch als Halteelemente für den Auffangsack 11.The downwardly projecting inner edge 25 of the plate 23 engages over the upper edge 15 of the collecting bag 11 to the inside and is connected to the collecting bag 11 by means of connecting elements which are designed, for example, as hook screws 28 which can be inserted through bores 29 in the plate 23 of the sealing element 22 . These hook screws 28 interact with counterparts on the collecting bag 11, namely preferably with fastening rings 30, 31. These hook screws 29 therefore not only serve for the connection between the sealing element 22 and the collecting bag 11, but also as holding elements for the collecting bag 11.

Erkennbar ist somit die Domschachtabdeckung über das Dichtelement 16 dicht mit dem Auffangsack 11 verbunden. Dies hat zur Folge, daß sich im Domschacht bildendes Kondenswasser nicht an der Domschachtabdeckung bzw. am Schachtdeckel 10 niederschlagen und nicht in den Auffangsack 11 gelangen kann, so daß kein Wasser in den Auffangsack 11 eindringt. Bei der Befüllung des Vorratsbehälters 1 bei geöffnetem Schachtdeckel 10 können somit nur Kraftstoff-Schlabberverluste in den Auffangsack 11 eindringen, wobei diese Schlabbermengen vorzugsweise über eine nicht dargestellte Bypass-Leitung in den Vorratsbehälter 1 eingeleitet werden können.The dome shaft cover can thus be seen to be tightly connected to the collecting bag 11 via the sealing element 16. As a result, condensation forms in the cathedral shaft do not knock down on the manhole cover or on the manhole cover 10 and cannot get into the collecting bag 11, so that no water penetrates into the collecting bag 11. When filling the storage container 1 with the manhole cover 10 open, only fuel waste losses can penetrate into the collecting bag 11, wherein these waste quantities can preferably be introduced into the storage container 1 via a bypass line (not shown).

Natürlich ist die Erfindung nicht auf die dargestellten Ausführungsbeispiele beschränkt. Weitere Ausgestaltungen sind möglich, ohne den Grundgedanken zu verlassen. So kann das Dichtelement 22 natürlich auch auf andere Weise gestaltet sein, wesentlich ist jedoch, daß das Dichtelement 22 eine dichte Verbindung zwischen der Domschachtabdeckung und dem oberen Rand 15 des Auffangsackes 11 herstellt. Der Auffangsack 11 kann selbstverständlich auch, wenn dies erforderlich bzw. zweckmäßig ist, mit eigenen Halteelementen versehen sein, die unabhängig vom Dichtelement sind und dergl. mehr.Of course, the invention is not limited to the exemplary embodiments shown. Further configurations are possible without leaving the basic idea. Thus, the sealing element 22 can of course also be designed in a different way, but it is essential that the sealing element 22 establishes a tight connection between the manhole cover and the upper edge 15 of the collecting bag 11. The collecting bag 11 can of course also, if this is necessary or expedient, be provided with its own holding elements which are independent of the sealing element and the like. More.

Claims (7)

Domschacht mit einer Domschachtabdeckung und in diese integrierten Deckel mit einer zum Auffangen von Leckageflüssigkeiten ausgekleideten Auffangeinrichtung, die sich trichterförmig von oben nach unten erstreckt und dichtend um Rohre, die in einem Vorratsbehälter für Kraftstoffe, Heizöle oder dergl. münden, gelegt ist, wobei die Auffangeinrichtung mit ihrem oberen Rand von Halteelementen gehalten ist und zwischen dem oberen Rand und der Domschachtabdeckung ein freier Abstand besteht,
dadurch gekennzeichnet,
daß in dem Bereich des freien Abstandes (16) zwischen dem oberen Rand (15) der Auffangeinrichtung (11) und der mit einem dicht schließenden Deckel (10) versehenen Domschachtabdeckung ein in sich geschlossenes hohlzylinderförmiges dünnwandiges Dichtelement (22) eingelegt ist, wobei die Endseiten des Dichtelementes (22) sowohl mit dem oberen Rand (15) der Auffangeinrichtung (11) als auch mit der Unterseite der Domschachtabdeckung dichtend zusammenwirkt.Dome shaft with a dome shaft cover and in this integrated lid with a collecting device lined for collecting leakage liquids, which extends in a funnel shape from top to bottom and is sealingly placed around pipes which open into a storage container for fuels, heating oils or the like, the collecting device is held with its upper edge by holding elements and there is a free distance between the upper edge and the manhole cover,
characterized,
that a self-contained hollow cylindrical thin-walled sealing element (22) is inserted in the area of the free distance (16) between the upper edge (15) of the collecting device (11) and the dome shaft cover provided with a tightly closing lid (10), the end sides of the sealing element (22) cooperates in a sealing manner both with the upper edge (15) of the collecting device (11) and with the underside of the manhole cover. Domschacht nach Anspruch 1,
dadurch gekennzeichnet,
daß das hohlzylinderförmige dünnwandige Dichtelement (22) aus einer Platte (23) besteht, die eine Öffnung (24), welche so bemessen ist, daß der nach unten vorstehende Innenrand (25) der Öffnung (24) mit dem oberen Rand (15) der Auffangeinrichtung (11) in etwa zusammentrifft, und einen an der Außenkontur der Platte (23) umlaufenden Mantel (26) aufweist, der auf der Platte (23) aufsitzt und mit dieser fest und dicht verbunden ist, wobei dessen Höhe in etwa der des freien Abstands (16) entspricht.Dome shaft according to claim 1,
characterized,
that the hollow cylindrical thin-walled sealing element (22) consists of a plate (23) which has an opening (24), which is dimensioned such that the downwardly projecting inner edge (25) of the opening (24) approximately meets the upper edge (15) of the collecting device (11), and a jacket (26) running around the outer contour of the plate (23) has, which sits on the plate (23) and is firmly and tightly connected to it, the height of which corresponds approximately to that of the free distance (16). Domschacht nach Anspruch 2,
dadurch gekennzeichnet,
daß auf dem oberen Rand des Mantels (26) eine umlaufende Dichtlippe angebracht ist und am Umfang des Mantels verteilt Verbindungselemente (27) vorgesehen sind, die mit der Domschachtabdeckung verbindbar sind.Dome shaft according to claim 2,
characterized,
that a circumferential sealing lip is attached to the upper edge of the casing (26) and connecting elements (27) are provided distributed around the circumference of the casing and can be connected to the manhole cover. Domschacht nach Anspruch 3,
dadurch gekennzeichnet,
daß die Verbindungselemente Laschen (27) sind, die mit der Domschachtabdeckung unter Zugeinwirkung verschraubbar sind.Dome shaft according to claim 3,
characterized,
that the connecting elements are tabs (27) which can be screwed to the dome shaft cover under the action of a pull. Domschacht nach Anspruch 2 oder einem der folgenden,
dadurch gekennzeichnet,
daß der nach unten vorstehende Innenrand (25) der Platte (23) die Auffangeinrichtung (11) von innen übergreift und mit dieser mittels Verbindungselementen (28) verbunden ist.Dome shaft according to claim 2 or one of the following,
characterized,
that the downwardly projecting inner edge (25) of the plate (23) engages over the collecting device (11) from the inside and is connected to it by means of connecting elements (28). Domschacht nach Anspruch 5,
dadurch gekennzeichnet,
daß die Verbindungselemente Hakenschrauben (28) sind, die mit Gegenstücken (30,31) an der Auffangeinrichtung (11) zusammenwirken, derart, daß sie die Halteelemente für die Auffangeinrichtung (11) bilden.Dome shaft according to claim 5,
characterized,
that the connecting elements are hook screws (28) which interact with counterparts (30, 31) on the collecting device (11) in such a way that they form the holding elements for the collecting device (11). Domschacht nach Anspruch 1,
dadurch gekennzeichnet,
daß die Domschachtabdeckung durch einen umlaufenden Unterzug (18) verstärkt ist, an welchen der Mantel (26) des Dichtelementes (22) umlaufend dicht anliegt.Dome shaft according to claim 1,
characterized,
that the manhole cover is reinforced by a circumferential girder (18), on which the jacket (26) of the sealing element (22) lies tightly all around.
EP96102621A 1995-02-27 1996-02-22 Access shaft with a covermember for an underground tank Expired - Lifetime EP0728679B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19506748 1995-02-27
DE19506748 1995-02-27
DE19603920 1996-02-03
DE19603920A DE19603920C2 (en) 1995-02-27 1996-02-03 Dome shaft with a dome shaft cover

Publications (2)

Publication Number Publication Date
EP0728679A1 true EP0728679A1 (en) 1996-08-28
EP0728679B1 EP0728679B1 (en) 1998-11-25

Family

ID=26012838

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96102621A Expired - Lifetime EP0728679B1 (en) 1995-02-27 1996-02-22 Access shaft with a covermember for an underground tank

Country Status (3)

Country Link
EP (1) EP0728679B1 (en)
AT (1) ATE173713T1 (en)
DE (1) DE29622629U1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4659251A (en) * 1985-09-23 1987-04-21 Dover Corporation Liquid spill container and method of making and installing same
US4960346A (en) * 1988-10-25 1990-10-02 Pemco, Inc. Containment unit with plug

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4017534A1 (en) * 1990-05-31 1991-12-05 Erwin Bald Underground fuel storage tank - has flexible bag fitted around filler pipe to catch any leakage
US5114271A (en) * 1990-10-03 1992-05-19 Dover Corporation Spill containment devices

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4659251A (en) * 1985-09-23 1987-04-21 Dover Corporation Liquid spill container and method of making and installing same
US4960346A (en) * 1988-10-25 1990-10-02 Pemco, Inc. Containment unit with plug

Also Published As

Publication number Publication date
ATE173713T1 (en) 1998-12-15
DE29622629U1 (en) 1997-03-20
EP0728679B1 (en) 1998-11-25

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