EP0781715B1 - Sealing arrangement for the annular gap between a container wall and a floating roof of a liquid container - Google Patents

Sealing arrangement for the annular gap between a container wall and a floating roof of a liquid container Download PDF

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Publication number
EP0781715B1
EP0781715B1 EP96120290A EP96120290A EP0781715B1 EP 0781715 B1 EP0781715 B1 EP 0781715B1 EP 96120290 A EP96120290 A EP 96120290A EP 96120290 A EP96120290 A EP 96120290A EP 0781715 B1 EP0781715 B1 EP 0781715B1
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EP
European Patent Office
Prior art keywords
sealing
membrane
sealing ring
sliding plates
annular gap
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EP96120290A
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German (de)
French (fr)
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EP0781715A1 (en
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Heinrich Imhof
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Individual
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Individual
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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
    • B65D88/00Large containers
    • B65D88/34Large containers having floating covers, e.g. floating roofs or blankets
    • B65D88/42Large containers having floating covers, e.g. floating roofs or blankets with sealing means between cover rim and receptacle
    • B65D88/46Large containers having floating covers, e.g. floating roofs or blankets with sealing means between cover rim and receptacle with mechanical means acting on the seal

Definitions

  • the invention relates to a sealing arrangement for the Annular gap between the container wall one for a liquid certain round containers and a floating blanket or one Floating roof with those listed in the preamble of claim 1 Characteristics.
  • the sealing membrane of the known sealing arrangement has an upper section on the cushion ring of the secondary or upper sealing ring, and a lower membrane section, the only at the top of the metallic sliding plates of the primary sealing ring rests on the inside and extends from there to the top of the floating roof without to immerse in the liquid.
  • This seal arrangement keeps the sealing membrane in connection with the two sealing rings gases escaping from the liquid in the Annular gap between the sliding plates and the floating roof back, however, the sealing effect does not meet today's increased demands.
  • DE-A-11 36 276 discloses a sealing arrangement without secondary Sealing ring with sliding shoes on the container wall known, wherein a membrane (sealing veil) is provided which covers the inside of the sliding plates with a double layer folding section down from the sliding plates in the Immersed liquid and then the annular gap between the container wall and bridging the floating roof to the floating roof connected. Because of the filling and emptying of the container occurring strong turbulence and the local changing annular gap widths is the intended hanging down of the Sealing veil in a fold as a continuation of the sliding shoes not guaranteed downwards. Rather are already after a relatively short time damage to the sealing veil expected.
  • the invention has for its object a generic Sealing arrangement with increased sealing effect, lower overall height, high flexibility of adaptation, low wear and to provide low costs.
  • FIG. 1 In the various figures there is a round container 1 with vertical axis only part of its container wall 2 shown. He is with liquid 3 up to a liquid level 4 filled. A floating roof 5 with a lower one Floor 6, an upper floor 7 and a wall 8 floats on the liquid 3, in which it is partially immersed. Between the container wall 2 and the wall 8 of the Floating roofs 5 there is an annular gap 9, which with the help a sealing arrangement 10 is sealed.
  • the sealing arrangement 10 has according to that in FIGS. 1 and 2 shown embodiment a lower or primary Sealing ring 11 and an upper or secondary Sealing ring 12, each designed annular and are arranged closely adjacent to one another and sealingly cooperate with the container wall 2 2. Doing so between the two sealing rings 11 and 12 on the one hand and the container wall 2, on the other hand, a limited, also formed annular space 13, the small one Has cross-sectional dimensions.
  • the primary sealing ring 11 includes a single one Slide plates 14 existing sealing ring.
  • the sliding plates 14 are uniform in the usual form and with less mutual overlap in the circumferential direction side by side arranged. They have a height that is about the height of the floating roof 5 corresponds. They are thin-walled, exist made of sheet metal and are made with the help of support and pressure elements held, pressed radially outwards and lying flat on the container wall 2.
  • the top edge 15 and the lower edge 16 of each slide plate 14 are - as shown - Angled inwards or towards the annular gap 9.
  • Each slide plate 14 is supported by a support element 17, like a handlebar with its lower end is articulated on a bearing block 18 which on the wall 8 of the Floating roofs 5 is attached close to the bottom floor 6.
  • the upper end of each support member 17 is at one Bearing bracket 19 articulated on the relevant slide plate 14 is attached.
  • the support elements 17 extend from bottom up and are out in through the container axis vertical inclines. The swiveling held support elements 17 ensure a radial adjustment the sealing arrangement 10 during horizontal movements of the floating roof 5. Accordingly, take a steeper one Position or they are more inclined.
  • the sliding plates 14 are below the liquid level 4 pressed against the container wall 2.
  • a pressure element 20 for example in the form of a V-shaped Leaf spring assigned to each slide plate 14 and with a middle part below the liquid level 4 screwed to the wall 8 of the floating roof 5.
  • the pressure element engages both horizontally directed legs 20 on a sheet 21, which is in the circumferential direction extends across the width of the slide plate 14 and with its upper edge at about the level of the liquid 4 completes and approximately to the angled lower edge 16 of the slide plate 14 protrudes into the liquid 3.
  • This Sheet 21 is also with the help of the inside of the Slide plate 14 protruding bolts with this firmly connected.
  • the primary sealing ring 11 also includes Membrane part 22, which in the broader sense is part of a sealing membrane 23, which bridges the annular gap 9.
  • the membrane part 22 is cylindrical or apron-shaped and is on the inside or on the floating roof side of the sliding plates 14 on. It is between the sliding plates 14 and the sheets 21 clamped and protected insofar as, at the same time in Membrane part 22 provided, not shown in the figures Through openings for the sliding plates 14 protruding bolts are sealed. With his lower, free membrane edge 24 is the membrane part 22 in the liquid 3 arranged.
  • the designed as a sealing apron Membrane part 22 is thus not only on the floating roof side arranged and covered on the slide plates 14 a substantial part of the height of the sliding plates 14, but it also dips in with its lower membrane edge 24 the liquid 3 freely, preferably in the area its lower free end is fixed.
  • a soft foam cushion in the form of a soft elastic cushion ring 25 the floating roof side of a wreath of Profile parts 26 is supported.
  • the profile parts 26 fit like the sliding plates 14 of the curvature of the container wall 2, but have a very low height and have also only a fraction of the length in the circumferential direction the slide plates 14, so that each slide plate 14 several Profile parts 26 are assigned (Fig. 1).
  • the profile parts 26 are each with the angled, upper edges 15 the sliding plates 14 firmly connected by means of bolts and how the edges 15 are inclined towards the inside of the container.
  • the cylindrical or apron-shaped membrane part 22 is between the top edge 15 of each slide plate 14 and the profile parts 26 firmly and tightly clamped.
  • the membrane part 31 bridging the annular gap 9 is included the upper end of the profile parts 26 firmly and tightly connected.
  • a central membrane part 27 extends in accordance with the embodiment shown in Figs. 1 and 2 from a clamping point on the upper edge 15 of the sliding plates 14 and thus from the space 13 to after externally angled flanges 26a at the upper end of the profile parts 26 and envelops the soft elastic cushion ring 25 on its outside facing the container wall 2.
  • Bolts are also provided on the flanges 26a, with the help of the membrane part 27 using is clamped and sealed by terminal strips 28.
  • Either the membrane parts 23 and 27 as well as the membrane part 31 are thus sealing at the upper end of the profile parts 26 connected with each other.
  • each profile part 26 is a pressure element 30 for example in the form of a leaf spring associated with the is attached at one end to the wall 8 and with her other end rests on the profile part 26.
  • FIGS. 1 and 2 are the membrane part used as a sealing apron 22, the middle membrane part 27 and the annular gap 9 bridging membrane part 31 in one piece in the form of a single sealing membrane 23. It extends initially inside on the sliding plates 14, then outside on the cushion ring 25 and finally bridges the annular gap 9.
  • the sealing membrane ends due to its one-piece construction 23 not at the upper end of the profile parts 26 or whose flanges 26a, but extends in the area of Annular gap 9 radially inwards and at the same time downwards inclined to the top of wall 8 of the floating roof 5 and is here with its edge 32 between an annular flange 33 clamped at the upper end of the wall 8 and terminal strips 34, what screws and nuts can be provided.
  • the membrane part 31 is spaced above the liquid level 4th
  • the Membrane part 22 in one-piece design in the area of the secondary Sealing ring 12 has only one membrane part 27 and ends at the upper end of the profile parts 26.
  • a ring gap 9 bridging membrane part 31 is missing.
  • a sealing membrane 44 is provided, which lies deeper in the annular gap 9, however, still above the liquid level 4 is arranged, with its outer Scope welded or glued to the membrane part 22 while its inner circumference seals against the Wall 8 of the floating roof 5 is attached.
  • annular gap 9 at its upper end against rain protected are rigid, weatherproof plates forming a ring 45 provided that slopes downward like a roof extend from the container wall 2 to the floating roof 5.
  • a large number of mutually overlapping circumferentially Weather protection plates 45 are - as shown - with the profile parts 26 of the secondary sealing ring 12 screwed tight and loose via a sliding part 46 on the supported upper floor 7 of the floating roof 5, so that this can perform horizontal movements unhindered.
  • the sealing arrangement 50 according to FIG. 4 in turn has unchanged primary and secondary sealing rings 11 and 12 on. It is in accordance with the scissors construction 41 Fig. 3 equipped and has a one-piece, from the Membrane parts 22, 27 and 31 existing sealing membrane 23 as in Fig. 1 and a deep, annular sealing membrane 44 as in Fig. 3.
  • the sealing membrane 44 is with the apron-like membrane part 22 of the sealing membrane 23 either welded or glued and on the wall 8 of the floating roof 5 attached vapor-tight.
  • the secondary sealing ring 12 is also a Assigned apron 29 which rotates in the circumferential direction, abuts the container wall 2 and with one Edge between the flanges 26a and the terminal strips 28 is clamped while its other or lower margin between the angled upper edge 15 of the slide plates 14 and clamped the lower end of the profile parts 26 and is set.
  • the wear apron 29 ensures a long life for the sealing membrane 23 and in particular for the middle one, facing the container wall 2, annular membrane part 27.
  • FIGS. 1 and 2 are without scissors construction and instead with carrying elements 17 like that 1 and 2 illustrated embodiment. Also an annular gap 9 with a membrane part 31 bridging sealing membrane 23 is as in FIGS. 1 and 2 provided. The main difference is in the different design of the primary sealing ring 61 and the secondary sealing ring 62.
  • the primary sealing ring 61 has otherwise the same Training only at a lower height and the axially Shorter sliding plates 63 are only below the liquid level 4 with the help of, for example, leaf springs designed pressure elements 20 on the container wall 2 pressed.
  • the secondary sealing ring 62 has in Comparison to the embodiment according to FIGS. 1 and 2 a much greater height in the direction of the axis of the round container 1, with instead of the cushion ring 25 a cylindrical Upholstery part 64 made of soft elastic foam is provided.
  • the secondary sealing ring is on the floating roof side 62 supported by high profile parts 65. They extend essentially parallel to the container wall 2 and support the cushion part 64 on its inner circumference from.
  • the sealing membrane 23 envelops it with its middle membrane part 27 'the cushion part 64 on the container wall side and extends in one piece to the free, lower Membrane edge 24, the serving as a sealing apron Membrane part 22.
  • the carrying elements engage in the embodiment according to FIG. 5 17 on the profile parts 65 of the secondary sealing ring 62 on.
  • V-shaped pressure elements 66 for example, in shape of leaf springs, which are basically the pressure elements 20 / leaf springs can correspond.
  • the membrane part 31 and serving as a sealing apron Membrane part 22 can consist of two pieces or from a one-piece sealing membrane 23 be formed.
  • the two membrane parts 22 and 31 are welded, glued at their connection point or are vulcanized together. These different types of connections come for all described embodiments in Question if the membrane parts are not made from one piece are.
  • a major advantage with the one that covers the sliding plates Sealing membranes can be achieved consists in that the sliding plates in the circumferential direction of the container wall can be much shorter than before. To the number of leaks between adjacent sliding plates like this To date, sliding plates have been kept as low as possible preferably as long as possible in the circumferential direction. However, there is a serious disadvantage of long sliding plates in that they are only very inflexible to the movements of the Floating roofs or the indoor swimming pool react and that with the sliding plates connected sealing membranes, which for Example according to the known constructions for bridging of the annular gap when moving long sliding plates form correspondingly large folds and thus large leaks Jobs.

Description

Die Erfindung bezieht sich auf eine Dichtungsanordnung für den Ringspalt zwischen der Behälterwand eines für eine Flüssigkeit bestimmten Rundbehälters und einer Schwimmdecke oder einem Schwimmdach mit den im Oberbegriff des Anspruchs 1 aufgeführten Merkmalen.The invention relates to a sealing arrangement for the Annular gap between the container wall one for a liquid certain round containers and a floating blanket or one Floating roof with those listed in the preamble of claim 1 Characteristics.

Eine derartige Dichtungsanordnung mit einem unteren primären Dichtungsring aus an die Behälterwand angedrückten Gleitplatten und einem oberen sekundären Dichtungsring in Form eines Polsterrings ist aus US 4 036 395 bereits bekannt.Such a sealing arrangement with a lower primary Sealing ring made of sliding plates pressed against the container wall and an upper secondary sealing ring in the form of a cushion ring is already known from US 4,036,395.

Die Dichtungsmembran der bekannten Dichtungsanordnung weist einen oberen Abschnitt auf, der den Polsterring des sekundären oder oberen Dichtungsrings umschließt, sowie einen unteren Membranabschnitt, der nur am oberen Rand der metallischen Gleitplatten des primären Dichtungsrings innenseitig anliegt und sich von dort zum oberen Rand des Schwimmdachs erstreckt, ohne in die Flüssigkeit einzutauchen. Bei dieser Dichtungsanordnung hält die Dichtungsmembran in Verbindung mit den beiden Dichtungsringen zwar aus der Flüssigkeit austretende Gase im Ringspalt zwischen den Gleitplatten und dem Schwimmdach zurück, die Dichtwirkung genügt jedoch nicht den heutigen erhöhten Ansprüchen. The sealing membrane of the known sealing arrangement has an upper section on the cushion ring of the secondary or upper sealing ring, and a lower membrane section, the only at the top of the metallic sliding plates of the primary sealing ring rests on the inside and extends from there to the top of the floating roof without to immerse in the liquid. With this seal arrangement keeps the sealing membrane in connection with the two sealing rings gases escaping from the liquid in the Annular gap between the sliding plates and the floating roof back, however, the sealing effect does not meet today's increased demands.

Aus DE-A-11 36 276 ist eine Dichtungsanordnung ohne sekundären Dichtungsring mit an der Behälterwand anliegenden Gleitschuhen bekannt, wobei eine Membran (Abdichtungsschleier) vorgesehen ist, welche die Gleitplatten innenseitig bedeckt, mit einem doppellagigen Faltabschnitt von den Gleitplatten herab in die Flüssigkeit eintaucht und dann den Ringspalt zwischen der Behälterwand und dem Schwimmdach überbrückend an das Schwimmdach angeschlossen ist. Wegen der beim Füllen und Entleeren des Behälters auftretenden starken Turbulenzen und der sich örtlich ändernden Ringspaltbreiten ist das vorgesehene Herabhängen des Abdichtungsschleiers in einer Falte als Fortsetzung der Gleitschuhe nach unten nicht gewährleistet. Vielmehr sind bereits nach relativ kurzer Zeit Beschädigungen des Abdichtungsschleiers zu erwarten.DE-A-11 36 276 discloses a sealing arrangement without secondary Sealing ring with sliding shoes on the container wall known, wherein a membrane (sealing veil) is provided which covers the inside of the sliding plates with a double layer folding section down from the sliding plates in the Immersed liquid and then the annular gap between the container wall and bridging the floating roof to the floating roof connected. Because of the filling and emptying of the container occurring strong turbulence and the local changing annular gap widths is the intended hanging down of the Sealing veil in a fold as a continuation of the sliding shoes not guaranteed downwards. Rather are already after a relatively short time damage to the sealing veil expected.

Der Erfindung liegt die Aufgabe zugrunde, eine gattungsgemäße Dichtungsanordnung mit erhöhter Dichtwirkung, geringerer Gesamtbauhöhe, hoher Anpassungsflexibilität, geringem Verschleiß und geringem Kostenaufwand bereit zu stellen.The invention has for its object a generic Sealing arrangement with increased sealing effect, lower overall height, high flexibility of adaptation, low wear and to provide low costs.

Diese Aufgabe wird mit den kennzeichnenden Merkmalen des Anspruchs 1 gelöst. Mit diesen Merkmalen lassen sich die vorgenannten Probleme auf einfache und elegante Weise beherrschen. Vor allem die zusätzliche Abdeckung der als Dichtelement dienenden Gleitplatten durch ein zweites Dichtelement in Gestalt der weiteren Dichtungsmembran führt zu einer wesentliche Verbesserung der Dichtungswirkung sowie zur Lösung der anderen, oben genannten Probleme bzw. zu einer Optimierung der anderen Anliegen.This task is carried out with the characterizing features of the claim 1 solved. With these features, the aforementioned Master problems in a simple and elegant way. Especially the additional cover as a sealing element serving sliding plates by a second sealing element in the form of the further sealing membrane leads to a substantial improvement of the sealing effect and Solution to the other problems mentioned above or to one Optimizing other concerns.

Zweckmäßige Ausgestaltungen und Weiterbildungen der Erfindung gehen aus Unteransprüchen im Zusammenhang mit der Beschreibung und der Zeichnung hervor.Appropriate refinements and developments of the invention go from dependent claims in connection with the description and the drawing.

Die Erfindung wird nachstehend anhand von Ausführungsbeispielen, die in der Zeichnung dargestellt sind, näher erläutert. Dabei zeigen:

Fig. 1:
abgebrochen sowie zum Teil im Scnnitt eine perspektivische Ansicht der Dichtungsanordnung zwischen der Behälterwand und dem Schwimmdach;
Fig. 2:
eine Ansicht der Dichtungsanordnung gemäß Fig. 1 in einem Axialschnitt;
Fig. 3:
eine Ansicht wie in Fig. 2 von einer abgewandelten Dichtungsanordnung;
Fig. 4:
eine Ansicht wie in den Fig. 2 und 3 von einer dritten Ausführungsform; und
Fig. 5:
eine Ansicht wie in den Fig. 2 bis 4 von einer vierten Dichtungsanordnung.
The invention is explained in more detail below on the basis of exemplary embodiments which are illustrated in the drawing. Show:
Fig. 1:
broken off and partly in section a perspective view of the sealing arrangement between the container wall and the floating roof;
Fig. 2:
a view of the seal assembly of Figure 1 in an axial section.
Fig. 3:
a view as in Figure 2 of a modified seal assembly.
Fig. 4:
a view as in Figures 2 and 3 of a third embodiment. and
Fig. 5:
a view as in FIGS. 2 to 4 of a fourth sealing arrangement.

In den verschiedenen Fig. ist von einem Rundbehälter 1 mit vertikaler Achse jeweils nur ein Teil seiner Behälterwand 2 dargestellt. Er ist mit Flüssigkeit 3 bis zu einem Flüssigkeitsspiegel 4 gefüllt. Ein Schwimmdach 5 mit einem unteren Boden 6, einem oberen Boden 7 und einer Wand 8 schwimmt auf der Flüssigkeit 3, in die es dabei teilweise eintaucht. Zwischen der Behälterwand 2 und der Wand 8 des Schwimmdaches 5 befindet sich ein Ringspalt 9, der mit Hilfe einer Dichtungsanordnung 10 abgedichtet ist.In the various figures there is a round container 1 with vertical axis only part of its container wall 2 shown. He is with liquid 3 up to a liquid level 4 filled. A floating roof 5 with a lower one Floor 6, an upper floor 7 and a wall 8 floats on the liquid 3, in which it is partially immersed. Between the container wall 2 and the wall 8 of the Floating roofs 5 there is an annular gap 9, which with the help a sealing arrangement 10 is sealed.

Die Dichtungsanordnung 10 weist gemäß dem in den Fig. 1 und 2 dargestellten Ausführungsbeispiel einen unteren oder primären Dichtungsring 11 und einen oberen oder sekundären Dichtungsring 12 auf, die jeweils ringförmig gestaltet sowie eng benachbart übereinander angeordnet sind und dichtend mit der Behälterwand 2 2 zusammenwirken. Dabei wird zwischen den beiden Dichtungsringen 11 und 12 einerseits und der Behälterwand 2 andererseits ein begrenzter, ebenfalls ringförmiger Zwischenraum 13 gebildet, der kleine Querschnittsabmessungen aufweist.The sealing arrangement 10 has according to that in FIGS. 1 and 2 shown embodiment a lower or primary Sealing ring 11 and an upper or secondary Sealing ring 12, each designed annular and are arranged closely adjacent to one another and sealingly cooperate with the container wall 2 2. Doing so between the two sealing rings 11 and 12 on the one hand and the container wall 2, on the other hand, a limited, also formed annular space 13, the small one Has cross-sectional dimensions.

Zum primären Dichtungsring 11 gehört ein aus einzelnen Gleitplatten 14 bestehender Dichtungsring. Die Gleitplatten 14 sind in üblicher Form gleichmäßig und mit geringer gegenseitiger Überlappung in Umfangsrichtung nebeneinander angeordnet. Sie weisen eine Höhe auf, die etwa der Höhe des Schwimmdaches 5 entspricht. Sie sind dünnwandig, bestehen aus Blech und werden mit Hilfe von Trage- und Andruckelementen gehalten, radial nach außen gedrückt und liegen flächig an der Behälterwand 2 an. Der obere Rand 15 und der untere Rand 16 einer jeden Gleitplatte 14 sind - wie dargestellt - einwärts bzw. zum Ringspalt 9 hin abgewinkelt.The primary sealing ring 11 includes a single one Slide plates 14 existing sealing ring. The sliding plates 14 are uniform in the usual form and with less mutual overlap in the circumferential direction side by side arranged. They have a height that is about the height of the floating roof 5 corresponds. They are thin-walled, exist made of sheet metal and are made with the help of support and pressure elements held, pressed radially outwards and lying flat on the container wall 2. The top edge 15 and the lower edge 16 of each slide plate 14 are - as shown - Angled inwards or towards the annular gap 9.

Jede Gleitplatte 14 ist über ein Trageelement 17 abgestützt, das nach Art eines Lenkers mit seinem unteren Ende an einem Lagerbock 18 angelenkt ist, der an der Wand 8 des Schwimmdaches 5 nahe beim unteren Boden 6 befestigt ist. Das obere Ende eines jeden Trageelementes 17 ist an einem Lagerbock 19 angelenkt, der an der betreffenden Gleitplatte 14 befestigt ist. Die Trageelemente 17 erstrecken sich von unten nach oben und sind nach außen in durch die Behälterachse verlaufenden Vertikalebenen geneigt. Die verschwenkbar gehaltenen Trageelemente 17 sorgen für eine radiale Anpassung der Dichtungsanordnung 10 bei Horizontalbewegungen des Schwimmdaches 5. Entsprechend nehmen sie eine steilere Stellung ein oder sie sind stärker geneigt.Each slide plate 14 is supported by a support element 17, like a handlebar with its lower end is articulated on a bearing block 18 which on the wall 8 of the Floating roofs 5 is attached close to the bottom floor 6. The upper end of each support member 17 is at one Bearing bracket 19 articulated on the relevant slide plate 14 is attached. The support elements 17 extend from bottom up and are out in through the container axis vertical inclines. The swiveling held support elements 17 ensure a radial adjustment the sealing arrangement 10 during horizontal movements of the floating roof 5. Accordingly, take a steeper one Position or they are more inclined.

Die Gleitplatten 14 werden unterhalb des Flüssigkeitsspiegels 4 an die Behälterwand 2 angedrückt. Dazu ist jeweils ein Andruckelement 20 zum Beispiel in Gestalt einer V-förmigen Blattfeder jeder Gleitplatte 14 zugeordnet und mit einem mittleren Teil unterhalb des Flüssigkeitsspiegels 4 an die Wand 8 des Schwimmdachs 5 angeschraubt. Mit seinen beiden horizontal gerichteten Schenkeln greift das Andruckelement 20 an einem Blech 21 an, das sich in Umfangsrichtung über die Breite der Gleitplatte 14 erstreckt und mit seinem oberen Rand etwa in Höhe des Flüssigkeitsspiegels 4 abschließt und etwa bis zum abgewinkelten unteren Rand 16 der Gleitplatte 14 in die Flüssigkeit 3 hinabragt. Dieses Blech 21 ist ferner mit Hilfe von innenseitig von der Gleitplatte 14 vorstehenden Schraubbolzen mit dieser fest verbunden.The sliding plates 14 are below the liquid level 4 pressed against the container wall 2. To do this is a pressure element 20, for example in the form of a V-shaped Leaf spring assigned to each slide plate 14 and with a middle part below the liquid level 4 screwed to the wall 8 of the floating roof 5. With his the pressure element engages both horizontally directed legs 20 on a sheet 21, which is in the circumferential direction extends across the width of the slide plate 14 and with its upper edge at about the level of the liquid 4 completes and approximately to the angled lower edge 16 of the slide plate 14 protrudes into the liquid 3. This Sheet 21 is also with the help of the inside of the Slide plate 14 protruding bolts with this firmly connected.

Zum primären Dichtungsring 11 gehören ferner ein Membranteil 22, der im weiteren Sinne Teil einer Dichtungsmembran 23 ist, die den Ringspalt 9 überbrückt.The primary sealing ring 11 also includes Membrane part 22, which in the broader sense is part of a sealing membrane 23, which bridges the annular gap 9.

Der Membranteil 22 ist zylinder- oder schürzenförmig und liegt innen bzw. schwimmdachseitig an den Gleitplatten 14 an. Er ist zwischen den Gleitplatten 14 und den Blechen 21 eingespannt und insofern geschützt, wobei zugleich im Membranteil 22 vorgesehene, in den Fig. nicht dargestellte Durchtrittsöffnungen für von den Gleitplatten 14 vorstehende Schraubbolzen abgedichtet sind. Mit seinem unteren, freien Membranrand 24 ist der Membranteil 22 in der Flüssigkeit 3 angeordnet. Der als Dichtungsschürze gestaltete Membranteil 22 ist somit nicht nur schwimmdachseitig auf den Gleitplatten 14 angeordnet und bedeckt einen wesentlichen Teil der Höhe der Gleitplatten 14, sondern er taucht auch mit seinem unteren Membranrand 24 in die Flüssigkeit 3 frei ab, wobei er vorzugsweise im Bereich seines unteren, freien Endes fixiert ist.The membrane part 22 is cylindrical or apron-shaped and is on the inside or on the floating roof side of the sliding plates 14 on. It is between the sliding plates 14 and the sheets 21 clamped and protected insofar as, at the same time in Membrane part 22 provided, not shown in the figures Through openings for the sliding plates 14 protruding bolts are sealed. With his lower, free membrane edge 24 is the membrane part 22 in the liquid 3 arranged. The designed as a sealing apron Membrane part 22 is thus not only on the floating roof side arranged and covered on the slide plates 14 a substantial part of the height of the sliding plates 14, but it also dips in with its lower membrane edge 24 the liquid 3 freely, preferably in the area its lower free end is fixed.

Zum sekundären Dichtungsring 12 (Fig. 2) gehört ein Weichschaumpolster in Form eines weichelastischen Polsterringes 25, der schwimmdachseitig von einem Kranz von Profilteilen 26 abgestützt ist. Die Profilteile 26 passen sich wie die Gleitplatten 14 der Krümmung der Behälterwand 2 an, weisen jedoch nur eine sehr geringe Höhe auf und haben auch in Umfangsrichtung nur einen Bruchteil der Länge der Gleitplatten 14, so daß jeder Gleitplatte 14 mehrere Profilteile 26 zugeordnet sind (Fig. 1). Die Profilteile 26 sind jeweils mit den abgewinkelten, oberen Rändern 15 der Gleitplatten 14 mit Hilfe von Schraubbolzen fest verbunden und wie die Ränder 15 zum Behälterinneren hin geneigt. Der zylindrische oder schürzenförmige Membranteil 22 ist zwischen dem oberen Rand 15 einer jeden Gleitplatte 14 und den Profilteilen 26 fest sowie dicht eingespannt.Belongs to secondary sealing ring 12 (Fig. 2) a soft foam cushion in the form of a soft elastic cushion ring 25, the floating roof side of a wreath of Profile parts 26 is supported. The profile parts 26 fit like the sliding plates 14 of the curvature of the container wall 2, but have a very low height and have also only a fraction of the length in the circumferential direction the slide plates 14, so that each slide plate 14 several Profile parts 26 are assigned (Fig. 1). The profile parts 26 are each with the angled, upper edges 15 the sliding plates 14 firmly connected by means of bolts and how the edges 15 are inclined towards the inside of the container. The cylindrical or apron-shaped membrane part 22 is between the top edge 15 of each slide plate 14 and the profile parts 26 firmly and tightly clamped.

Der den Ringspalt 9 überbrückende Membranteil 31 ist mit dem oberen Ende der Profilteile 26 fest und dicht verbunden.The membrane part 31 bridging the annular gap 9 is included the upper end of the profile parts 26 firmly and tightly connected.

Schließlich erstreckt sich ein mittlerer Membranteil 27 gemäß dem in den Fig. 1 und 2 dargestellten Ausführungsbeispiel von einer Einspannstelle am oberen Rand 15 der Gleitplatten 14 und somit von dem Zwischenraum 13 bis zu nach außen abgewinkelten Flanschen 26a am oberen Ende der Profilteile 26 und umhüllt dabei den weichelastischen Polsterring 25 an seiner der Behälterwand 2 zugekehrten Außenseite. Auch an den Flanschen 26a sind Schraubbolzen vorgesehen, mit deren Hilfe der Membranteil 27 unter Verwendung von Klemmleisten 28 eingespannt und abgedichtet ist. Sowohl die Membranteile 23 und 27 als auch der Membranteil 31 sind somit am oberen Ende der Profilteile 26 dichtend miteinander verbunden.Finally, a central membrane part 27 extends in accordance with the embodiment shown in Figs. 1 and 2 from a clamping point on the upper edge 15 of the sliding plates 14 and thus from the space 13 to after externally angled flanges 26a at the upper end of the profile parts 26 and envelops the soft elastic cushion ring 25 on its outside facing the container wall 2. Bolts are also provided on the flanges 26a, with the help of the membrane part 27 using is clamped and sealed by terminal strips 28. Either the membrane parts 23 and 27 as well as the membrane part 31 are thus sealing at the upper end of the profile parts 26 connected with each other.

Der sekundäre Dichtungsring 12 ist über die Profilteile 26 an den Gleitplatten 14 und somit ebenfalls über die Trageelemente 17 an dem Schwimmdach 5 abgestützt. Zum Andrücken des sekundären Dichtungsrings 12 an die Behälterwand 2 ist jedem Profilteil 26 ein Andruckelement 30 zum Beispiel in Gestalt einer Blattfeder zugeordnet, die mit einem Ende an der Wand 8 befestigt ist und mit ihrem anderen Ende am Profilteil 26 anliegt.The secondary sealing ring 12 is over the profile parts 26 on the slide plates 14 and thus also over the support elements 17 are supported on the floating roof 5. To the Press the secondary sealing ring 12 against the container wall 2, each profile part 26 is a pressure element 30 for example in the form of a leaf spring associated with the is attached at one end to the wall 8 and with her other end rests on the profile part 26.

Gemäß dem in den Fig. 1 und 2 dargestellten Ausführungsbeispiel sind der als Dichtungsschürze dienende Membranteil 22, der mittlere Membranteil 27 und der den Ringspalt 9 überbrückende Membranteil 31 einstückig in Gestalt einer einzigen Dichtungsmembran 23. Sie erstreckt sich zunächst innen an den Gleitplatten 14, sodann außen an dem Polsterring 25 und überbrückt schließlich den Ringspalt 9.According to the embodiment shown in FIGS. 1 and 2 are the membrane part used as a sealing apron 22, the middle membrane part 27 and the annular gap 9 bridging membrane part 31 in one piece in the form of a single sealing membrane 23. It extends initially inside on the sliding plates 14, then outside on the cushion ring 25 and finally bridges the annular gap 9.

Aufgrund ihrer Einstückigkeit endet die Dichtungsmembran 23 nicht am oberen Ende der Profilteile 26 bzw. an deren Flanschen 26a, sondern erstreckt sich im Bereich des Ringspaltes 9 radial einwärts und dabei zugleich abwärts geneigt bis zum oberen Rand der Wand 8 des Schwimmdaches 5 und ist hier mit ihrem Rand 32 zwischen einem Ringflansch 33 am oberen Ende der Wand 8 und Klemmleisten 34 eingespannt, wozu Schrauben und Muttern vorgesehen sein könnnen. Der Membranteil 31 liegt dabei im Abstand über dem Flüssigkeitsspiegel 4.The sealing membrane ends due to its one-piece construction 23 not at the upper end of the profile parts 26 or whose flanges 26a, but extends in the area of Annular gap 9 radially inwards and at the same time downwards inclined to the top of wall 8 of the floating roof 5 and is here with its edge 32 between an annular flange 33 clamped at the upper end of the wall 8 and terminal strips 34, what screws and nuts can be provided. The membrane part 31 is spaced above the liquid level 4th

Aus Fig. 2 ist zu ersehen, daß die vom eingetauchten unteren Membranrand 24 bis zum eingespannten oberen Rand 32 einstückig durchlaufende Dichtungsmembran 23 den Ringspalt 9 oberhalb des Flüssigkeitspiegels 4 in Verbindung mit der Wand 8 des Schwimmdaches 5 praktisch vollständig umschließt, so daß dem Entweichen von Flüssigkeitsdämpfen sicher vorgebeugt ist. Ein Entweichen von Dämpfen ist auch kaum entlang der Behälterwand 2 möglich, da diese dort gemäß dem in den Fig. 1 und 2 dargestellten Ausführungsbeispiel zwei Dichtungsringe 11 und 12 überwinden müssen. Zwischen diesen beiden Dichtungsringen 11 und 12 ist nur ein kleiner Zwischenraum 13 vorgesehen, der zum Behälterinneren hin durch die einstückige Dichtungsmembran 23 begrenzt ist, so daß auch hier Dämpfe aus dem Produktraum nicht nach außen gelangen können. Es besteht daher nicht die Gefahr, daß wesentliche Dampfmengen über den Zwischenraum 13 entweichen.From Fig. 2 it can be seen that the immersed lower Membrane edge 24 up to the clamped upper edge 32 one-piece continuous sealing membrane 23 den Annular gap 9 above the liquid level 4 in connection with the wall 8 of the floating roof 5 practically completely encloses so that the escape of liquid vapors is safely prevented. An escape from Steaming is also hardly possible along the container wall 2, since these there according to that shown in FIGS. 1 and 2 Embodiment two sealing rings 11 and 12 have to overcome. Between these two sealing rings 11 and 12, only a small space 13 is provided, the one to the inside of the container Sealing membrane 23 is limited, so that here too Vapors cannot escape from the product room. There is therefore no danger of essentials Amounts of steam escape through the space 13.

Die Dichtungsanordnung 40 gemäß Fig. 3 weist viele Übereinstimmungen mit der vorstehend beschriebenen Dichtungsanordnung 10 auf. Insbesondere sind der primäre Dichtungsring 11 und der sekundäre Dichtungsring 12 ebenso ausgebildet, so daß für die entsprechenden Teile gleiche Bezugszeichen verwendet werden und auf eine erneute Beschreibung verzichtet wird. 3 has many similarities with the sealing arrangement described above 10 on. In particular, the primary sealing ring 11 and the secondary sealing ring 12 also trained so that for the corresponding parts the same reference numerals are used and a new one Description is waived.

Eine Abweichung besteht darin, daß anstelle eines jeden stabförmigen Trageelementes 17 jeweils eine Scherenkonstruktion 41 mit einem Tragstück 42 und einem Scherenarm 43 vorgesehen ist.One difference is that instead of everyone rod-shaped support element 17 each have a scissor construction 41 with a support piece 42 and a scissor arm 43 is provided.

Ein weiterer Unterscheid besteht darin, daß der Membranteil 22 in einstückiger Ausbildung im Bereich des sekundären Dichtungsrings 12 nur ein Membranteil 27 aufweist und am oberen Ende der Profilteile 26 endet. Ein den Ringspalt 9 überbrückendes Membranteil 31 fehlt. Stattdessen ist aber eine Dichtungsmembran 44 vorgesehen, die tieferliegend im Ringspalt 9 jedoch noch oberhalb des Flüssigkeitspiegels 4 angeordnet ist, wobei sie mit ihrem äußeren Umfang mit dem Membranteil 22 verschweißt oder verklebt ist, während ihr innerer Umfang abdichtend an der Wand 8 des Schwimmdaches 5 befestigt ist. Damit nun der Ringspalt 9 an seinem oberen Ende zum Beispiel gegen Regen geschützt ist, sind starre, einen Ring bildende Wetterschutzplatten 45 vorgesehen, die sich dachartig abwärts geneigt von der Behälterwand 2 zum Schwimmdach 5 erstrecken. Eine Vielzahl sich in Umfangsrichtung gegenseitig überlappender Wetterschutzplatten 45 ist - wie dargestellt - mit den Profilteilen 26 des sekundären Dichtungsrings 12 fest verschraubt und lose über ein Gleitteil 46 auf dem oberen Boden 7 des Schwimmdaches 5 abgestützt, so daß dieses ungehindert Horizontalbewegungen ausführen kann.Another difference is that the Membrane part 22 in one-piece design in the area of the secondary Sealing ring 12 has only one membrane part 27 and ends at the upper end of the profile parts 26. A ring gap 9 bridging membrane part 31 is missing. Instead however, a sealing membrane 44 is provided, which lies deeper in the annular gap 9, however, still above the liquid level 4 is arranged, with its outer Scope welded or glued to the membrane part 22 while its inner circumference seals against the Wall 8 of the floating roof 5 is attached. So now the For example, annular gap 9 at its upper end against rain protected, are rigid, weatherproof plates forming a ring 45 provided that slopes downward like a roof extend from the container wall 2 to the floating roof 5. A large number of mutually overlapping circumferentially Weather protection plates 45 are - as shown - with the profile parts 26 of the secondary sealing ring 12 screwed tight and loose via a sliding part 46 on the supported upper floor 7 of the floating roof 5, so that this can perform horizontal movements unhindered.

Die Dichtungsanordnung 50 gemäß Fig. 4 weist wiederum unveränderte primäre und sekundäre Dichtungsringe 11 und 12 auf. Sie ist mit der Scherenkonstruktion 41 gemäß Fig. 3 ausgestattet und weist eine einstückige, aus den Membranteilen 22, 27 und 31 bestehende Dichtungsmembran 23 wie in Fig. 1 und eine tiefliegende, ringförmige Dichtungsmembran 44 wie in Fig. 3 auf. Die Dichtungsmembran 44 ist mit dem schürzenartigen Membranteil 22 der Dichtungsmembran 23 entweder verschweißt oder verklebt und an der Wand 8 des Schwimmdaches 5 dampfdicht befestigt.The sealing arrangement 50 according to FIG. 4 in turn has unchanged primary and secondary sealing rings 11 and 12 on. It is in accordance with the scissors construction 41 Fig. 3 equipped and has a one-piece, from the Membrane parts 22, 27 and 31 existing sealing membrane 23 as in Fig. 1 and a deep, annular sealing membrane 44 as in Fig. 3. The sealing membrane 44 is with the apron-like membrane part 22 of the sealing membrane 23 either welded or glued and on the wall 8 of the floating roof 5 attached vapor-tight.

Dem sekundären Dichtungsring 12 ist ferner eine Schleißschürze 29 zugeordnet, die in Umfangsrichtung umläuft, an der Behälterwand 2 anliegt und mit ihrem einen Rand zwischen den Flanschen 26a und den Klemmleisten 28 eingespannt ist, während ihr anderer oder unterer Rand zwischen dem abgewinkelten oberen Rand 15 der Gleitplatten 14 und dem unteren Ende der Profilteile 26 eingespannt und festgelegt ist. Die Schleißschürze 29 gewährleistet eine lange Lebensdauer für die Dichtungsmembran 23 und insbesondere für deren mittleren, der Behälterwand 2 zugewandten, ringförmigen Membranteil 27.The secondary sealing ring 12 is also a Assigned apron 29 which rotates in the circumferential direction, abuts the container wall 2 and with one Edge between the flanges 26a and the terminal strips 28 is clamped while its other or lower margin between the angled upper edge 15 of the slide plates 14 and clamped the lower end of the profile parts 26 and is set. The wear apron 29 ensures a long life for the sealing membrane 23 and in particular for the middle one, facing the container wall 2, annular membrane part 27.

Die Dichtungsanordnung 60 gemäß Fig. 5 ist ohne Scherenkonstruktion und stattdessen mit Trageelementen 17 wie bei dem in den Fig. 1 und 2 dargestellten Ausführungsbeispiel ausgeführt. Auch eine den Ringspalt 9 mit einem Membranteil 31 überbrückende Dichtungsmembran 23 ist wie in den Fig. 1 und 2 vorgesehen. Der wesentliche Unterschied liegt in der andersartigen Ausbildung des primären Dichtungsrings 61 und des sekundären Dichtungsrings 62.5 is without scissors construction and instead with carrying elements 17 like that 1 and 2 illustrated embodiment. Also an annular gap 9 with a membrane part 31 bridging sealing membrane 23 is as in FIGS. 1 and 2 provided. The main difference is in the different design of the primary sealing ring 61 and the secondary sealing ring 62.

Der primäre Dichtungsring 61 weist bei sonst gleicher Ausbildung nur eine geringere Höhe auf und die axial kürzeren Gleitplatten 63 werden nur unterhalb des Flüssigkeitsspiegels 4 mit Hilfe von zum Beispiel als Blattfedern gestalteten Andruckelementen 20 an die Behälterwand 2 gedrückt. Der sekundäre Dichtungsring 62 weist im Vergleich zu der Ausführungsform nach den Fig. 1 und 2 eine wesentlich größere Höhe in Richtung der Achse des Rundbehälters 1 auf, wobei statt des Polsteringes 25 ein zylinderförmiges Polsterteil 64 aus weichelastischem Schaumstoff vorgesehen ist. Schwimmdachseitig ist der sekundäre Dichtungsring 62 durch hohe Profilteile 65 abgestützt. Sie erstrecken sich im wesentlichen parallel zur Behälterwand 2 und stützen den Polsterteil 64 an seinem Innenumfang ab. Auch hier umhüllt die Dichtungsmembran 23 mit ihrem mittleren Membranteil 27' den Polsterteil 64 behälterwandseitig und erstreckt sich einstückig bis zum freien, unteren Membranrand 24, des als Dichtungsschürze dienenden Membranteils 22.The primary sealing ring 61 has otherwise the same Training only at a lower height and the axially Shorter sliding plates 63 are only below the liquid level 4 with the help of, for example, leaf springs designed pressure elements 20 on the container wall 2 pressed. The secondary sealing ring 62 has in Comparison to the embodiment according to FIGS. 1 and 2 a much greater height in the direction of the axis of the round container 1, with instead of the cushion ring 25 a cylindrical Upholstery part 64 made of soft elastic foam is provided. The secondary sealing ring is on the floating roof side 62 supported by high profile parts 65. They extend essentially parallel to the container wall 2 and support the cushion part 64 on its inner circumference from. Here too, the sealing membrane 23 envelops it with its middle membrane part 27 'the cushion part 64 on the container wall side and extends in one piece to the free, lower Membrane edge 24, the serving as a sealing apron Membrane part 22.

Ferner greifen bei der Ausführungsform nach Fig. 5 die Trageelemente 17 an den Profilteilen 65 des sekundären Dichtrings 62 an. Gleiches gilt auch für zusätzlich vorgesehene, V-förmige Andruckelemente 66 zum Beispiel in Gestalt von Blattfedern, die grundsätzlich den Andruckelementen 20/ Blattfedern entsprechen können. Furthermore, the carrying elements engage in the embodiment according to FIG. 5 17 on the profile parts 65 of the secondary sealing ring 62 on. The same applies to additionally provided V-shaped pressure elements 66, for example, in shape of leaf springs, which are basically the pressure elements 20 / leaf springs can correspond.

Der Membranteil 31 und der als Dichtungsschürze dienende Membranteil 22 können aus zwei Stücken bestehen oder von einer einstückigen Dichtungsmembran 23 gebildet sein. Die beiden Membranteile 22 und 31 sind an ihrer Verbindungsstelle verschweißt, verklebt oder miteinander vulkanisiert sind. Diese verschiedenen Verbindungsarten kommen für alle beschriebenen Ausführungsbeispiele in Frage, soweit die Membranteile nicht aus einem Stück hergestellt sind.The membrane part 31 and serving as a sealing apron Membrane part 22 can consist of two pieces or from a one-piece sealing membrane 23 be formed. The two membrane parts 22 and 31 are welded, glued at their connection point or are vulcanized together. These different types of connections come for all described embodiments in Question if the membrane parts are not made from one piece are.

Die Erfindung ist nicht auf die in den Fig. dargestellten Ausführungsbeispiele beschränkt, vielmehr sind noch Abwandlungen und zweckmäßige Ausgestaltungen möglich, ohne von dem grundsätzlichen Erfindungsgedanken abzuweichen. Dazu gehört auch, daß die Einzelmerkmale der verschiedenen Ausführungsbeispiele untereinander austauschbar sind. Ferner sind die zum Abdecken von Gleitplatten 14 bzw. 63 dienenden Dichtungsmembranen nicht nur für Dichtungsanordnungen für Schwimmdächer 5 bestimmt, sondern auch für Dichtungsanordnungen von Schwimmdecken, die sich innen an einem Behälter mit Dach befinden.The invention is not limited to that shown in the figures Embodiments are limited, rather there are still modifications and practical configurations possible without to deviate from the basic idea of the invention. To also includes that the individual features of the various embodiments are interchangeable. Further are used to cover sliding plates 14 and 63 respectively Sealing membranes not only for sealing arrangements for Floating roofs 5 determined, but also for sealing arrangements of floating blankets, located on the inside of a container with roof.

Ein wesentlicher Vorteil, der mit den die Gleitplatten abdeckenden Dichtungsmembranen erzielbar ist, besteht darin, daß die Gleitplatten in Umfangsrichtung der Behälterwand wesentlich kürzer sein können als bisher. Um die Anzahl der undichten Stellen zwischen benachbarten Gleitplatten so gering wie möglich zu halten, hat man bisher Gleitplatten mit möglichst großer Länge in Umfangsrichtung bevorzugt. Ein gravierender Nachteil langer Gleitplatten besteht aber darin, daß sie nur sehr unflexibel auf die Bewegungen des Schwimmdaches bzw. der Innenschwimmdecke reagieren und daß mit den Gleitplatten verbundene Dichtungsmembranen, die zum Beispiel gemäß den bekannten Konstruktionen zum Überbrücken des Ringspaltes dienen, bei Bewegungen langer Gleitplatten entsprechend große Falten bilden und damit zu großen undichten Stellen führen. Eine wesentlich bessere Reaktion und Anpassung der Gleitplatten an die Bewegungen des Schwimmdaches/ der Schwimmdecke wird dann erzielt, wenn sie in Umfangsrichtung kurz bzw. extrem kurz sind, wie dies bei Verwendung des Membranteils 22 möglich ist. Während bisher 2 bis 4 Meter lange Gleitplatten zum Beispiel in Gestalt von Gleitblechen verwendet wurden, können die Gleitplatten bei Verwendung eines Membranteils 22 vorteilhafterweise eine Länge von nur noch etwa dem ein- bis dreifachen der Höhe eines Schwimmdaches 5 bzw. einer Schwimmdecke aufweisen. Dies ist wesentlich kürzer als bisher und führt im Ergebnis zusammen mit dem zusätzlichen Membranteil 22 zu einer hohen Flexibilität bei optimaler Dichtheit und geringer Faltenbildung im Bereich der angeschlossenen Dichtungsmembranen. Durch Faltenbildung bedingte Emissionen und Schäden an den Dichtungsmembranen werden daher wirksamer vermieden als bisher.A major advantage with the one that covers the sliding plates Sealing membranes can be achieved consists in that the sliding plates in the circumferential direction of the container wall can be much shorter than before. To the number of leaks between adjacent sliding plates like this To date, sliding plates have been kept as low as possible preferably as long as possible in the circumferential direction. However, there is a serious disadvantage of long sliding plates in that they are only very inflexible to the movements of the Floating roofs or the indoor swimming pool react and that with the sliding plates connected sealing membranes, which for Example according to the known constructions for bridging of the annular gap when moving long sliding plates form correspondingly large folds and thus large leaks Jobs. A much better response and adjustment of the sliding plates to the movements of the Floating roofs / the floating roof is then achieved when are short or extremely short in the circumferential direction, as in Use of the membrane part 22 is possible. While Previously 2 to 4 meter long sliding plates, for example in shape of sliding plates have been used, the sliding plates when using a membrane part 22 advantageously a length of only about one to three times the height of a floating roof 5 or a floating ceiling exhibit. This is much shorter than before and results in the result along with the additional Membrane part 22 for high flexibility with optimal tightness and less wrinkling in the area of the connected Sealing membranes. Caused by wrinkling Emissions and damage to the sealing membranes are therefore avoided more effectively than before.

Claims (7)

  1. A sealing assembly (10, 40, 50, 60) for an annular gap (9) positioned between the tank wall (2) of a round tank (1) intended for a liquid (3) and a floating cover or floating roof (5) which simultaneously serves as a support for the sealing assembly (10, 40, 50, 60),
    said sealing assembly comprising a multi-membered primary sealing ring (11, 61) which consists of thin-walled sliding plates (14, 63) and rests on the tank wall (2),
    with the sliding plates (14, 63) dipping with their lower edges (16) into the liquid (3), and
    a secondary sealing ring (12, 62) arranged thereabove in the form of a cushioning ring (25) and provided with stiff profile sections (26, 65),
    said sealing ring resting with a sealing membrane (27) on the tank wall (2),
    with support and/or contact pressure elements (17, 42 and 20, 30, 66, respectively) being provided, as well as at least one flexible sealing membrane (23) which spans the annular gap (9) between tank wall (2) and floating cover or floating roof (5) above the liquid (3), characterized in
    a) that a membrane member (22) covers a considerable part of the height of the sliding plates (14, 63) at the side of the floating cover or floating roof,
    b) that a lower free membrane edge (24) of the membrane member (22) dips into the liquid (3) and is mechanically fixed in the lower portion of the sliding plates (14, 63),
    c) that the sealing membrane (22, 23, 27, 27', 31, 44) which integrally extends from the immersed lower membrane edge (24) of the primary sealing ring (11) over the secondary sealing ring (12) and to the wall (8) on the floating roof (5) completely encloses the annular gap (9) above the liquid level (4) together with the wall (8) of the floating roof (5),
    d) and that the membrane members (22, 23, 27, 27', 31, 44) are made integral at least in part and/or are glued, welded or vulcanized to one another.
  2. The sealing assembly according to claim 1, characterized in that a membrane member (31) which spans the annular gap (9) is provided at the level of the secondary sealing ring (12), and/or a membrane member (44) is provided which spans the annular gap (9) at the level of the primary sealing ring (11).
  3. The sealing assembly according to at least one of the preceding claims, characterized in that a plurality of sliding plates (14, 63) are provided, each having a length of about one to three times the height of the floating cover or floating roof (5).
  4. The sealing assembly according to at least one of the preceding claims, characterized in that the sliding plates (14, 63) of the primary sealing ring (11, 61) are pressed in the area of the liquid level (4) by separate contact pressure elements (20) against the tank wall (2).
  5. The sealing assembly according to at least one of the preceding claims, characterized in that the membrane member (27) of the secondary sealing ring (12, 62) and the membrane member (31) spanning the annular gap (9) meet each other at the upper end of the profile sections (26) and are clamped.
  6. The sealing assembly according to at least one of the preceding claims, characterized in that the secondary sealing ring (12, 62) is surrounded by a sealing element apron (29) at the side of the tank wall.
  7. The sealing assembly according to at least one of the preceding claims, characterized in that the upper edge (15) of the sliding plates (14) is respectively bent towards the center of the tank and supports a profile section (26, 65) of the secondary sealing ring (12, 62) which is inclined at the same angle.
EP96120290A 1995-12-27 1996-12-18 Sealing arrangement for the annular gap between a container wall and a floating roof of a liquid container Expired - Lifetime EP0781715B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19548817 1995-12-27
DE19548817 1995-12-27

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EP0781715B1 true EP0781715B1 (en) 2001-07-25

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EP96120290A Expired - Lifetime EP0781715B1 (en) 1995-12-27 1996-12-18 Sealing arrangement for the annular gap between a container wall and a floating roof of a liquid container

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Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6354488B1 (en) * 2000-08-01 2002-03-12 Chicago Bridge & Iron Company Secondary seal for floating roof storage tank
DE10108320A1 (en) * 2001-02-21 2002-09-12 Imhof Ingbuero Gmbh Device for sealing the annular gap between a container inner wall of a vertical round container intended for a liquid and a floating cover
US7044322B2 (en) 2002-12-16 2006-05-16 Chicago Bridge & Iron Company Spring-loaded secondary seal for floating-roof storage tank
US7748555B2 (en) 2002-12-16 2010-07-06 Chicago Bridge & Iron Company Spring-loaded secondary seal for floating-roof storage tank
EP2966010B1 (en) 2014-07-07 2017-03-15 Heinrich Imhof Vertical cylindrical container with a seal assembly for the annular gap between the container wall and an outer wall of a floating cover
CN115924330B (en) * 2022-12-20 2023-07-04 河北珠峰仪器仪表设备有限公司 Full-closed device for inner wall of storage tank and floating disc

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2354629A (en) * 1943-03-27 1944-07-25 John H Wiggins Top seal for floating tank roof side wall shoes
DE1136276B (en) * 1959-11-19 1962-09-06 Aug Kloenne Fa Reservoir for easily volatile liquids
US3565279A (en) * 1968-10-29 1971-02-23 Us Industries Inc Floating roof tank seal means
US4036395A (en) * 1976-06-04 1977-07-19 Pacific Erectors Corporation Secondary sealing device for storage vessel having a floating roof
US4353477A (en) * 1977-09-30 1982-10-12 Chicago Bridge & Iron Company Floating roof metallic shoe secondary seal

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EP0781715A1 (en) 1997-07-02
DE59607357D1 (en) 2001-08-30

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