EP0557802B1 - Rescue device for platforms - Google Patents

Rescue device for platforms Download PDF

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Publication number
EP0557802B1
EP0557802B1 EP93102098A EP93102098A EP0557802B1 EP 0557802 B1 EP0557802 B1 EP 0557802B1 EP 93102098 A EP93102098 A EP 93102098A EP 93102098 A EP93102098 A EP 93102098A EP 0557802 B1 EP0557802 B1 EP 0557802B1
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EP
European Patent Office
Prior art keywords
rescue device
flanges
rescue
cable
shells
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP93102098A
Other languages
German (de)
French (fr)
Other versions
EP0557802A1 (en
Inventor
Günter Kraft
Rolf Meister
Raimund Stegmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ThyssenKrupp Marine Systems GmbH
Original Assignee
Howaldtswerke Deutsche Werft GmbH
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Publication of EP0557802A1 publication Critical patent/EP0557802A1/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63CLAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
    • B63C9/00Life-saving in water
    • B63C9/22Devices for holding or launching life-buoys, inflatable life-rafts, or other floatable life-saving equipment
    • B63C9/23Containers for inflatable life-saving equipment
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63CLAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
    • B63C9/00Life-saving in water
    • B63C9/22Devices for holding or launching life-buoys, inflatable life-rafts, or other floatable life-saving equipment

Definitions

  • the invention relates to a rescue device for floating or stationary platforms or stations, such as. B. oil rigs, which can be dropped or anchored in the vicinity of such a system under water until an emergency occurs and releases a life raft floating on the water surface after release.
  • the invention has for its object to provide a rescue device which are kept substantially stationary under water even at greater depths and can be operated in an emergency to suspend a life raft, which, although there is no access under water, regular maintenance of all parts enables and that can be lowered undamaged after installation in the ready position over water and without opening to a greater depth.
  • the rescue device comprises a base part and a container attached thereon, which can rise under its own buoyancy and releases an automatically inflating life raft near the water surface, and furthermore devices for holding the container on the base part and for releasing and preferably also means with which a Floating of the base part with a container arranged on it is made possible.
  • the base part When the rescue device is lowered onto the sea floor, the base part forms a foundation. It is designed as a heavy plate or frame that holds the container in a ready position against its buoyancy on the sea floor. However, the base part can also be arranged above the sea floor, for example on a holding rope of a platform, at a depth in which it does not interfere with shipping traffic and in which it is hardly exposed to the wave movements of the sea.
  • the container is preferably spherical and consists of two half-shells which are formed from fiber-reinforced plastic.
  • a ring made of a relatively strong plastic is located between the flanges of the two half-shells.
  • On both sides of the ring there is at least one groove which receives a seal, for example a lip seal.
  • the brackets can be released. They have levers which are held in a position compressing the flanges by a tensioning cable running above the level of the flanges. Holding lines engage on the clamp or preferably on the levers, which hold the container on the base part and which can be released, for example, by a pivoting movement of the lever. By means of a release mechanism, one end of the tensioning cable clamped in it is released or at least released so far that the levers of the clamps pivot downward.
  • the retaining lines are released at the same time on all brackets and the mechanical connection between the two half-shells is released, so that the container can rise to the water surface due to its own buoyancy and can open there as soon as the internal pressure in the container is greater than the external water pressure.
  • Base part, half-shells and the life raft which inflates after the container has been opened preferably remain connected by a tether so that the life raft remains close to the platform.
  • the base part is provided with a number of floating bodies, which are stowed away in the folded state and are released by compressed air upon a signal.
  • the size of these elastic bubbles should be chosen approximately according to the weight of the base part.
  • Differential pressure valves are provided on the floating bodies which keep the volume of these bodies approximately constant during the ascent hold and thus avoid their inadmissible expansion.
  • the rescue device can be actuated to release the container or to float the entire device by means of acoustic or electrical signals, for example also via a cable connection to the platform.
  • the container of the rescue device shown consists of the two half-shells 1, between whose flanges 21 an intermediate ring 5 is arranged.
  • This container is held on the base part 2 by means of holding lines 7, which can also be regarded as a foundation.
  • Four brackets 4 press the half-shells 1 onto the intermediate ring and have levers 14 which are tensioned by a tension cable 16 in their Be held in position.
  • the holding lines 7, which can be adjusted via turnbuckles 11, engage on the levers 14.
  • the levers 14 pivot outwards and detach from the tether lines 7, so that the container can rise through its own buoyancy.
  • the foundation 2 On the foundation 2 there is a rope drum 17, via whose rope 27 the ascending container and the life raft contained therein remain connected to the foundation.
  • the foundation 2 has receiving spaces 32 for folded floating bodies, not shown.
  • the control devices 9 and possibly the signal receiver for the floating of the entire rescue device and for the trigger 6 for releasing the half-shells 1 are also accommodated in a watertight container there.
  • a cable connection, not shown, can run between the control unit 9 and the trigger 6.
  • a water detector 8 can be arranged in the interior of the lower half-shell 1, which is also connected to the control unit 9 by a cable and which causes a signal to be emitted if water collects there.
  • the clamp 4 engages with a fixed leg from below on the outside of the flange 21 of the lower half-shell 1.
  • a hinge pin 22 is arranged, on which a lever 14 can rotate, which presses with its lower leg from above onto the flange 21 of the upper half-shell, so that both flanges 21 are pressed against the intermediate ring 5 become.
  • the tensioning cable 16 extends through a hole or a hook-shaped recess at the upper end of the lever 14 in the tensioned state.
  • On the lever 14 there is a hook 23 which is engaged by an eye connected to the tether 7 by means of a turnbuckle 11. If the tension cable 16 is released, the lever 14 pivots outwards and downwards. The hook 23 releases the tether 7 and at the same time the short leg of the lever 14 is pivoted into a position in which the upper half-shell 1 can separate from the intermediate ring.
  • the pressing force on the flanges can be adjusted by means of clamping screws 15.
  • the clamping screws 15 act on metallic washers 25 in order to avoid damage to the plastic of the flanges 21.
  • a flat metal rod 24 which is fastened to the intermediate ring by means of a screw 18 and can be connected to the clamp part 4 in a manner not shown, so that the latter on the intermediate ring 5 when the container opens and the lower half-shell 1 remains.
  • An elastic lip seal 12 is inserted in at least one annular groove on each side of the intermediate ring 5.
  • a permanently plastic sealing compound 13 is introduced into a groove in the ring 5 on the outer edge of the sealing joints.
  • the trigger 6 can be attached to one of the levers 14, the upper end of which is suitably designed for this purpose.
  • a pyrotechnic device for example, is suitable as a trigger, which ejects a piston in response to an electrical impulse, which releases a clamping lever that firmly clamps the rope, which is not shown in the drawings.
  • the two half-shells initially remain in close contact with one another under the effect of the external water pressure. If the external pressure decreases when rising, a device (not shown) is influenced, whereby the valve of a compressed air bottle in the container opens, releases compressed air through which the life raft is inflated, and as a result the half-shells 1 are separated from one another when the water surface is reached, so that The life raft 40 can unfold to its full volume on the water surface without delay.
  • the half-shells 1 expediently remain attached to the tether 27.
  • a number of rescue devices are arranged around a platform 50 on the seabed, so that in an emergency and even in unfavorable weather there are always enough life rafts 40 for people who have to leave the platform 50.
  • an intermediate ring 5 is dispensed with, so that the flanges of the half-shells 1 lie directly against one another, including suitable sealing means, and are pressed together by the external water pressure and the clamps 4.
  • the brackets are preferably attached to the lower half-shell.
  • the sealing means enclosed between the flanges are preferably an elastic, soft sealing material in an outer annular surface, which is effective in the low pressure range, and a hard sealing material in an inner annular surface for sealing in the high pressure region.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Emergency Lowering Means (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)

Description

Die Erfindung bezieht sich auf ein Rettungsgerät für schwimmende oder stationäre Plattformen oder Stationen, wie z. B. Bohrinseln, das in der Nähe einer solchen Anlage unter Wasser bis zum Eintreten eines Notfalles abgesetzt oder verankert werden kann und nach Auslösung eine an die Wasseroberfläche aufschwimmende Rettungsinsel freigibt.The invention relates to a rescue device for floating or stationary platforms or stations, such as. B. oil rigs, which can be dropped or anchored in the vicinity of such a system under water until an emergency occurs and releases a life raft floating on the water surface after release.

Der Anmelderin ist ein ihres Wissens noch nicht druckschriftlich veröffentlichter Vorschlag bekannt, am Meeresboden oder auch in größerer Wassertiefe an den Haltetauen einer Bohrinsel derartige Rettungseinrichtungen anzuordnen, aus denen bei Bedarf ein Rettungsgerät aufsteigt, das an der Wasseroberfläche automatisch eine Rettungsinsel bildet, in die hinein sich Personal von einer havarierten Plattform retten kann. Nicht näher bekannt ist jedoch, wie in der Praxis derartige Rettungseinrichtungen ausgeführt werden können und wie sich eine Wartung durchführen läßt.As far as is known, the applicant is aware of a proposal, not yet published in printed form, to arrange such rescue facilities on the seabed or in greater water depth on the holding ropes of an oil rig, from which, if necessary, a rescue device rises that automatically forms a life raft on the water surface into which it extends Can save personnel from a damaged platform. However, it is not known in detail how such rescue facilities can be implemented in practice and how maintenance can be carried out.

Der Erfindung liegt die Aufgabe zugrunde, ein Rettungsgerät zu schaffen, welches im wesentlichen ortsfest unter Wasser auch in größerer Meerestiefe bereitgehalten werden und im Ernstfall zur Aussetzung einer Rettungsinsel betätigt werden kann, das, obwohl eine Zugänglichkeit unter Wasser nicht besteht, eine regelmäßige Wartung aller Teile ermöglicht und das sich nach Montage in der Bereitschaftsstellung über Wasser unbeschädigt und ohne sich zu öffnen in größere Tiefe absenken läßt.The invention has for its object to provide a rescue device which are kept substantially stationary under water even at greater depths and can be operated in an emergency to suspend a life raft, which, although there is no access under water, regular maintenance of all parts enables and that can be lowered undamaged after installation in the ready position over water and without opening to a greater depth.

Diese Aufgabe wird durch ein Rettungsgerät gemäß Anspruch 1 gelöst, wobei die in regelmäßigen Abständen zu erfolgenden Wartungsarbeiten unter Verwendung der Einrichtungen gemäß Anspruch 7 durchgeführt werden können. Die weiteren Unteransprüche geben bevorzugte Einzelheiten an.This object is achieved by a rescue device according to claim 1, which at regular intervals maintenance work can be carried out using the facilities according to claim 7. The further subclaims give preferred details.

Erfindungsgemäß umfaßt das Rettungsgerät ein Basisteil und einen hierauf angebrachten Behälter, der durch eigenen Auftrieb aufsteigen kann und nahe der Wasseroberfläche eine sich selbsttätig aufblasende Rettungsinsel freigibt, und ferner Einrichtungen zum Halten des Behälters an dem Basisteil sowie zum Lösen und vorzugsweise auch Mittel, mit denen ein Aufschwimmen des Basisteils mit auf ihm angeordnetem Behälter ermöglicht wird.According to the invention, the rescue device comprises a base part and a container attached thereon, which can rise under its own buoyancy and releases an automatically inflating life raft near the water surface, and furthermore devices for holding the container on the base part and for releasing and preferably also means with which a Floating of the base part with a container arranged on it is made possible.

Beim Absenken des Rettungsgerätes auf den Meeresboden bildet das Basisteil ein Fundament. Es ist als eine schwere Platte oder ein schwerer Rahmen ausgeführt, der den Behälter entgegen seiner Auftriebskraft am Meeresboden in einer Bereitschaftsstellung festhält. Das Basisteil kann jedoch auch oberhalb des Meeresbodens beispielsweise an einer Haltetrosse einer Plattform in einer Tiefe angeordnet werden, in der es den Schiffsverkehr nicht stört und in der es den Wellenbewegungen der See kaum noch ausgesetzt ist.When the rescue device is lowered onto the sea floor, the base part forms a foundation. It is designed as a heavy plate or frame that holds the container in a ready position against its buoyancy on the sea floor. However, the base part can also be arranged above the sea floor, for example on a holding rope of a platform, at a depth in which it does not interfere with shipping traffic and in which it is hardly exposed to the wave movements of the sea.

Der Behälter ist vorzugsweise kugelförmig ausgeführt und besteht aus zwei Halbschalen, die aus faserverstärktem Kunststoff gebildet sind. Zwischen den Flanschen der beiden Halbschalen befindet sich in einer bevorzugten Ausführungsform ein Ring aus einem verhältnismäßig festem Kunststoff. An beiden Seiten des Ringes ist wenigstens eine Nut angebracht, die eine Dichtung , beispielsweise eine Lippendichtung, aufnimmt. Durch diese Lösung können die an dem Zwischenring anliegenden Flansche der Halbschalen glatt ausgeführt werden und werden nicht durch Nuten oder andere Dichtungseinrichtungen geschwächt. Die Flansche werden durch am Umfang regelmäßig verteilte etwa gabelartige Verklammerungen von beiden Seiten an den Zwischenring angedrückt.The container is preferably spherical and consists of two half-shells which are formed from fiber-reinforced plastic. In a preferred embodiment, a ring made of a relatively strong plastic is located between the flanges of the two half-shells. On both sides of the ring there is at least one groove which receives a seal, for example a lip seal. With this solution, the flanges of the half-shells lying against the intermediate ring can be made smooth and are not made by grooves or other sealing devices weakened. The flanges are pressed against the intermediate ring from both sides by approximately fork-like clamps that are regularly distributed around the circumference.

Die Verklammerungen sind lösbar. Sie weisen Hebel auf, die durch ein oberhalb der Ebene der Flansche verlaufendes Spannseil in einer die Flansche zusammendrückenden Position gehalten werden. An der Verklammerung oder vorzugsweise an den Hebeln greifen Halteleinen an, die den Behälter auf dem Basisteil festhalten und die beispielsweise durch eine Schwenkbewegung des Hebels gelöst werden können. Durch einen Auslösemechanismus wird ein Ende des in ihm eingespannten Spannseils freigegeben oder wenigstens so weit gelöst, daß die Hebel der Verklammerungen nach unten schwenken. Hierdurch werden gleichzeitig an allen Verklammerungen die Halteleinen gelöst und die mechanische Verbindung zwischen den beiden Halbschalen aufgehoben, so daß der Behälter infolge eigenem Auftrieb zur Wasseroberfläche aufsteigen und sich dort öffnen kann, sobald der Innendruck in dem Behälter größer als der äußere Wasserdruck ist.The brackets can be released. They have levers which are held in a position compressing the flanges by a tensioning cable running above the level of the flanges. Holding lines engage on the clamp or preferably on the levers, which hold the container on the base part and which can be released, for example, by a pivoting movement of the lever. By means of a release mechanism, one end of the tensioning cable clamped in it is released or at least released so far that the levers of the clamps pivot downward. As a result, the retaining lines are released at the same time on all brackets and the mechanical connection between the two half-shells is released, so that the container can rise to the water surface due to its own buoyancy and can open there as soon as the internal pressure in the container is greater than the external water pressure.

Basisteil, Halbschalen und die sich nach Öffnung des Behälters aufblasende Rettungsinsel bleiben im Einsatzfall vorzugsweise durch eine Halteleine verbunden, so daß die Rettungsinsel in der Nähe der Plattform bleibt.Base part, half-shells and the life raft which inflates after the container has been opened preferably remain connected by a tether so that the life raft remains close to the platform.

Für Wartungsarbeiten ist das Basisteil mit einer Anzahl von Aufschwimmkörpern versehen, die im zusammengefalteten Zustand verstaut sind und auf ein Signal hin durch Preßluft entfaltet werden. Die Größe dieser elastischen Blasen ist etwa entsprechend dem Gewicht des Basisteils zu wählen. An den Aufschwimmkörpern sind Differenzdruckventile vorgesehen, die während des Aufsteigens das Volumen dieser Körper etwa konstant halten und damit ihre unzulässige Ausdehnung vermeiden. Durch Aufschwimmen kann somit das gesamte Rettungsgerät an die Wasseroberfläche geholt und hier an Bord eines Schiffes genommen werden, um Wartungsarbeiten und Funktionsprüfungen durchzuführen.For maintenance work, the base part is provided with a number of floating bodies, which are stowed away in the folded state and are released by compressed air upon a signal. The size of these elastic bubbles should be chosen approximately according to the weight of the base part. Differential pressure valves are provided on the floating bodies which keep the volume of these bodies approximately constant during the ascent hold and thus avoid their inadmissible expansion. By floating, the entire rescue device can be brought to the surface of the water and taken here on board a ship to carry out maintenance work and functional tests.

Die Betätigung des Rettungsgerätes zur Freisetzung des Behälters oder zum Aufschwimmen des gesamten Gerätes kann durch akustische oder durch elektrische Signale, beispielsweise auch über eine Kabelverbindung zu der Plattform erfolgen.The rescue device can be actuated to release the container or to float the entire device by means of acoustic or electrical signals, for example also via a cable connection to the platform.

Weitere Einzelheiten des erfindungsgemäßen Rettungsgerätes werden anhand des auf den Zeichnungen schematisch dargestellten bevorzugten Ausführungsbeispiels beschrieben.Further details of the rescue device according to the invention are described with reference to the preferred exemplary embodiment shown schematically in the drawings.

Es zeigen

Fig. 1
eine Seitenansicht des Rettungsgerätes,
Fig. 2
eine Draufsicht auf das Gerät,
Fig. 3
einen Schnitt durch die Flanschen der Halbschalen mit einer Verklammerung,
Fig. 4
eine teilweise Ansicht der Verklammerung mit angedeutetem Auslösemechanismus des Spannseiles,
Fig. 5
eine Draufsicht auf die Teile gemäß Fig. 4
Fig. 6
eine vereinfachte Darstellung des Rettungsgerätes nahe einer Plattform.
Show it
Fig. 1
a side view of the rescue device,
Fig. 2
a top view of the device,
Fig. 3
a section through the flanges of the half-shells with a clamp,
Fig. 4
a partial view of the stapling with indicated trigger mechanism of the tension cable,
Fig. 5
4 shows a plan view of the parts according to FIG. 4
Fig. 6
a simplified representation of the rescue device near a platform.

Der Behälter des dargestellten Rettungsgerätes besteht aus den beiden Halbschalen 1, zwischen deren Flanschen 21 ein Zwischenring 5 angeordnet ist. Dieser Behälter wird durch Halteleinen 7 an dem Basisteil 2, das auch als Fundament angesehen werden kann, festgehalten. Vier Verklammerungen 4 drücken die Halbschalen 1 an den Zwischenring an und weisen Hebel 14 auf, die durch ein Spannseil 16 unter einer gewissen Spannung in ihrer Position gehalten werden. An den Hebeln 14 greifen die Halteleinen 7 an, welche über Spannschlösser 11 einstellbar sind. Im Verlauf des Spannseils 16, vorzugsweise an einem der Hebel 14, befindet sich ein Auslöser 6, der das Spannseil aus der gespannten Position freigibt. Dabei schwenken die Hebel 14 nach außen und lösen sich von den Halteleinen 7, so daß der Behälter durch eigenen Auftrieb aufsteigen kann.The container of the rescue device shown consists of the two half-shells 1, between whose flanges 21 an intermediate ring 5 is arranged. This container is held on the base part 2 by means of holding lines 7, which can also be regarded as a foundation. Four brackets 4 press the half-shells 1 onto the intermediate ring and have levers 14 which are tensioned by a tension cable 16 in their Be held in position. The holding lines 7, which can be adjusted via turnbuckles 11, engage on the levers 14. In the course of the tension cable 16, preferably on one of the levers 14, there is a trigger 6 which releases the tension cable from the tensioned position. The levers 14 pivot outwards and detach from the tether lines 7, so that the container can rise through its own buoyancy.

Auf dem Fundament 2 befindet sich eine Seiltrommel 17, über deren Seil 27 der aufsteigende Behälter und die in ihm enthaltene Rettungsinsel mit dem Fundament verbunden bleiben. Das Fundament 2 weist Aufnahmeräume 32 für nicht dargestellte, zusammengefaltete Aufschwimmkörper auf. Auf dem Fundament 2 befindet sich ein Zentriersockel 33, in dem die untere Halbschale ruhen kann, und es sind Ösen 34 für die Halteleinen 7 angebracht. Ferner ist dort wenigstens eine Preßluftflasche 10 zum Aufblasen der Aufschwimmkörper angeordnet. Die Steuereinrichtungen 9 und gegebenenfalls der Signalempfänger für das Aufschwimmen des gesamten Rettungsgerätes und für den Auslöser 6 zur Freigabe der Halbschalen 1 sind dort in einem wasserdichten Behälter ebenfalls untergebracht. Zwischen den Steuergerät 9 und dem Auslöser 6 kann eine nicht dargestellte Kabelverbindung verlaufen. Im Inneren der unteren Halbschale 1 kann ein Wassermelder 8 angeordnet sein, der ebenfalls durch ein Kabel mit dem Steuergerät 9 verbunden wird und der die Abgabe eines Signals veranlaßt, falls sich dort Wasser sammelt.On the foundation 2 there is a rope drum 17, via whose rope 27 the ascending container and the life raft contained therein remain connected to the foundation. The foundation 2 has receiving spaces 32 for folded floating bodies, not shown. On the foundation 2 there is a centering base 33, in which the lower half-shell can rest, and eyelets 34 are attached for the holding lines 7. Furthermore, there is at least one compressed air bottle 10 for inflating the floating body. The control devices 9 and possibly the signal receiver for the floating of the entire rescue device and for the trigger 6 for releasing the half-shells 1 are also accommodated in a watertight container there. A cable connection, not shown, can run between the control unit 9 and the trigger 6. A water detector 8 can be arranged in the interior of the lower half-shell 1, which is also connected to the control unit 9 by a cable and which causes a signal to be emitted if water collects there.

Die Verklammerung 4 greift mit einem festen Schenkel von unten außen an dem Flansch 21 der unteren Halbschale 1 an. Am oberen Ende des Verklammerungsteiles 4 ist ein Gelenkbolzen 22 angeordnet, an dem sich ein Hebel 14 drehen kann, der mit seinem unteren Schenkel außen von oben auf den Flansch 21 der oberen Halbschale drückt, so daß beide Flanschen 21 gegen den Zwischenring 5 gepreßt werden. Durch ein Loch oder eine hakenförmige Ausnehmung am oberen Ende des Hebels 14 verläuft das Spannseil 16 in gespanntem Zustand. An dem Hebel 14 befindet sich ein Haken 23, an dem ein über ein Spannschloß 11 mit der Halteleine 7 verbundenes Auge angreift. Wird das Spannseil 16 gelöst, schwenkt der Hebel 14 nach außen und unten. Dabei gibt der Haken 23 die Halteleine 7 frei und gleichzeitig wird der kurze Schenkel des Hebels 14 in eine Stellung geschwenkt, in der sich die obere Halbschale 1 von dem Zwischenring trennen kann.The clamp 4 engages with a fixed leg from below on the outside of the flange 21 of the lower half-shell 1. At the upper end of the clamping part 4, a hinge pin 22 is arranged, on which a lever 14 can rotate, which presses with its lower leg from above onto the flange 21 of the upper half-shell, so that both flanges 21 are pressed against the intermediate ring 5 become. The tensioning cable 16 extends through a hole or a hook-shaped recess at the upper end of the lever 14 in the tensioned state. On the lever 14 there is a hook 23 which is engaged by an eye connected to the tether 7 by means of a turnbuckle 11. If the tension cable 16 is released, the lever 14 pivots outwards and downwards. The hook 23 releases the tether 7 and at the same time the short leg of the lever 14 is pivoted into a position in which the upper half-shell 1 can separate from the intermediate ring.

Durch Spannschrauben 15 kann die Andrückkraft an die Flansche eingestellt werden. Die Spannschrauben 15 wirken auf metallische Unterlegflächen 25, um eine Beschädigung des Kunststoffs der Flansche 21 zu vermeiden. Auch seitlich ist, wenigstens im Bereich der Verklammerungen, ein flacher Metallstab 24 vorgesehen, der mittels einer Schraube 18 an den Zwischenring befestigt ist und in nicht dargestellter Weise mit dem Verklammerungsteil 4 verbunden sein kann, so daß dieses bei sich öffnendem Behälter an dem Zwischenring 5 und der unteren Halbschale 1 verbleibt.The pressing force on the flanges can be adjusted by means of clamping screws 15. The clamping screws 15 act on metallic washers 25 in order to avoid damage to the plastic of the flanges 21. Also at the side, at least in the area of the clamps, is a flat metal rod 24, which is fastened to the intermediate ring by means of a screw 18 and can be connected to the clamp part 4 in a manner not shown, so that the latter on the intermediate ring 5 when the container opens and the lower half-shell 1 remains.

In wenigstens einer Ringnut an jeder Seite des Zwischenrings 5 ist eine elastische Lippendichtung 12 eingelegt. In eine Nut des Rings 5 am äußeren Rand der Dichtungsfugen wird eine dauerplastische Dichtungsmasse 13 eingebracht.An elastic lip seal 12 is inserted in at least one annular groove on each side of the intermediate ring 5. A permanently plastic sealing compound 13 is introduced into a groove in the ring 5 on the outer edge of the sealing joints.

Der Auslöser 6 kann an einem der Hebel 14 angebracht sein, dessen oberes Ende zu diesem Zweck in geeigneter Weise gestaltet ist. Als Auslöser eignet sich beispielsweise eine pyrotechnische Einrichtung, die auf einen elektrischen Impuls hin einen Kolben ausstößt, welcher einen das Seil fest einspannenden Klemmhebel löst, was auf den Zeichnungen nicht dargestellt ist.The trigger 6 can be attached to one of the levers 14, the upper end of which is suitably designed for this purpose. A pyrotechnic device, for example, is suitable as a trigger, which ejects a piston in response to an electrical impulse, which releases a clamping lever that firmly clamps the rope, which is not shown in the drawings.

Wenn der Behälter beispielsweise im Notfall durch Verschwenken der Hebel 14 freigegeben wird und nach oben aufschwimmt, bleiben die beiden Halbschalen zunächst noch unter der Wirkung des äußeren Wasserdrucks in dichter Anlage zueinander. Vermindert sich beim Aufsteigen der Außendruck, wird eine nicht dargestellte Einrichtung beeinflußt, wodurch sich das Ventil einer Preßluftflasche in dem Behälter öffnet, Preßluft freigibt, durch die die Rettungsinsel aufgeblasen wird, und dadurch werden bei Erreichen der Wasseroberfläche die Halbschalen 1 voneinander getrennt, so daß sich die Rettungsinsel 40 ohne Verzögerung zu ihrem vollen Volumen an der Wasseroberfläche entfalten kann. Die Halbschalen 1 bleiben zweckmäßigerweise am Halteseil 27 befestigt. Um eine Plattform 50 herum wird eine Anzahl von Rettungsgeräten am Meeresboden angeordnet, so daß im Notfall und auch bei ungünstiger Witterung immer genügend Rettungsinseln 40 für Personen vorhanden sind, die die Plattform 50 verlassen müssen.If, for example, the container is released in an emergency by pivoting the lever 14 and floats upwards, the two half-shells initially remain in close contact with one another under the effect of the external water pressure. If the external pressure decreases when rising, a device (not shown) is influenced, whereby the valve of a compressed air bottle in the container opens, releases compressed air through which the life raft is inflated, and as a result the half-shells 1 are separated from one another when the water surface is reached, so that The life raft 40 can unfold to its full volume on the water surface without delay. The half-shells 1 expediently remain attached to the tether 27. A number of rescue devices are arranged around a platform 50 on the seabed, so that in an emergency and even in unfavorable weather there are always enough life rafts 40 for people who have to leave the platform 50.

Bei einer anderen bevorzugten Ausführungsform wird auf einen Zwischenring 5 verzichtet, so daß die Flanschen der Halbschalen 1 direkt unter Einschluß geeigneter Dichtungsmittel aneinander liegen und durch den äußeren Wasserdruck sowie die Verklammerungen 4 zusammengedrückt werden. In diesem Fall sind die Verklammerungen vorzugsweise an der unteren Halbschale befestigt. Die zwischen den Flanschen eingeschlossenen Dichtungsmittel sind vorzugsweise ein elastisches weiches Dichtungsmaterial in einer äußeren Kreisringfläche, das im niedrigen Druckbereich wirksam ist und in einer inneren Kreisringfläche ein hartes Dichtungsmaterial zur Abdichtung im Hochdruckbereich.In another preferred embodiment, an intermediate ring 5 is dispensed with, so that the flanges of the half-shells 1 lie directly against one another, including suitable sealing means, and are pressed together by the external water pressure and the clamps 4. In this case, the brackets are preferably attached to the lower half-shell. The sealing means enclosed between the flanges are preferably an elastic, soft sealing material in an outer annular surface, which is effective in the low pressure range, and a hard sealing material in an inner annular surface for sealing in the high pressure region.

Claims (9)

  1. Rescue device for floating or stationary platforms or stations, which device can be deposited in the vicinity of these installations and automatically forms a rescue island on the surface of the water after being released, characterised in that it comprises
    a) a base (2), which is anchorable or can be deposited on the sea bed;
    b) a container formed from two half-shells (1), which can be held together at their flanges (21), the container including a rescue island, which inflates on the surface of the water, and the means necessary therefor;
    c) a detachable clamp (4) at a plurality of intermediate locations on the flanges (21) of the half-shells (1);
    d) a detachable tensioning cable (16) between the clamps (4) in a plane above the flanges (21);
    e) detachable retaining lines (7) between the clamps (4) and the base (2); and
    f) a release mechanism (6) in the tensioning cable (16), which mechanism detaches the tensioning cable (16) and releases the retaining lines (7).
  2. Rescue device according to claim 1, characterised in that each clamp (4) has a lever (14), which is pivotable about a hinge bolt (22) and compresses the clamp (4) on both sides of the flanges (21) by the effect of the tensioning cable (16), and a hook (23) is situated on said lever, a retaining line (7) being engageable in said hook until a pivotal movement is effected by a detachment of the tensioning cable (16).
  3. Rescue device according to claim 1 and/or 2, characterised in that the flanges (21) of the half-shells (1) abut directly against one another, and a resilient seal of soft material is situated between said flanges close to their outermost periphery, a high-pressure seal of hard sealing material being situated further inwardly.
  4. Rescue device according to claim 2, characterised in that the faces of the flanges (21) orientated towards one another are smooth, and an intermediate ring (5), which is situated between said faces, has on each side at least one annular recess for accommodating a lip seal (12), as well as a recess for a permanently plastic plastics material compound (13) on its outer edge.
  5. Rescue device according to claim 4, characterised in that the clamps (4) are mounted on the intermediate ring (5) by means of screws (18), and the two flanges (21) can be urged towards the intermediate ring (5) by means of a respective tensioning screw (15) on the lower arm of the clamp (4) and on the arm of the lever (14).
  6. Rescue device according to one or more of claims 1 to 5, characterised in that the release mechanism (6) for the tensioning cable (16) is remote controllable by an electric or acoustic signal received from a control means (9) on the base (2) and releases the tensioning cable (16) at least to an extent which is necessary to pivot the lever (14).
  7. Rescue device according to one or more of claims 1 to 5, characterised in that the base (2) is provided with floating bodies, a compressed-air container (10) and a control means (9) in order to allow the entire rescue device to rise to the surface of the water for maintenance work.
  8. Rescue device according to claim 7, characterised in that the floating bodies are inflatable, resilient bodies which have been folded-up and have differential pressure valves which keep the volume of the bodies substantially constant during rising.
  9. Rescue device according to claim 7, characterised in that the base (2) has a centering support (33) for one of the half-shells (1), fastening eyelets (34) for the retaining lines (7) and a cable drum (17) for a retaining cable (27), by means of which cable the base (2) and the inflated rescue island (40) remain connected when the rescue device has been released.
EP93102098A 1992-02-24 1993-02-11 Rescue device for platforms Expired - Lifetime EP0557802B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4205946 1992-02-24
DE4205946A DE4205946A1 (en) 1992-02-24 1992-02-24 RESCUE DEVICE FOR PLATFORMS

Publications (2)

Publication Number Publication Date
EP0557802A1 EP0557802A1 (en) 1993-09-01
EP0557802B1 true EP0557802B1 (en) 1995-07-19

Family

ID=6452662

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93102098A Expired - Lifetime EP0557802B1 (en) 1992-02-24 1993-02-11 Rescue device for platforms

Country Status (3)

Country Link
EP (1) EP0557802B1 (en)
DE (2) DE4205946A1 (en)
NO (1) NO180160C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022104707A1 (en) * 2020-11-20 2022-05-27 唐山哈船科技有限公司 Emergency escape device for offshore platform

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10305769A1 (en) * 2003-02-11 2004-08-19 Stefan Nau Gmbh Tank installation has one or more preferably thermoplastics tanks held down by cables or belts having an extension of less than 1 percent under nominal load
DE102004037458B4 (en) * 2004-08-02 2021-01-14 Senvion Gmbh Rescue capsule for wind turbines
DE102021206306A1 (en) * 2021-06-21 2022-12-22 Thyssenkrupp Ag Inflatable boat launching system for a submarine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1919227C3 (en) * 1969-04-16 1981-02-12 Walter Poole Dorset Tangen (Ver. Koenigreich) Life raft for ships
FR2286049A1 (en) * 1974-09-30 1976-04-23 Suber Underwater signalling unit - has buoy released from concrete block by explosive device on receipt of actuator signal
JPS5897591A (en) * 1981-12-03 1983-06-10 Mitsubishi Electric Corp Expansion type lifesaving raft

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022104707A1 (en) * 2020-11-20 2022-05-27 唐山哈船科技有限公司 Emergency escape device for offshore platform

Also Published As

Publication number Publication date
DE59300357D1 (en) 1995-08-24
NO180160C (en) 1997-02-26
NO930625D0 (en) 1993-02-23
DE4205946A1 (en) 1993-08-26
EP0557802A1 (en) 1993-09-01
NO930625L (en) 1993-08-25
NO180160B (en) 1996-11-18

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