EP1415906B1 - Arrangement for generating buoyancy in a submersible watercraft - Google Patents

Arrangement for generating buoyancy in a submersible watercraft Download PDF

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Publication number
EP1415906B1
EP1415906B1 EP03016752A EP03016752A EP1415906B1 EP 1415906 B1 EP1415906 B1 EP 1415906B1 EP 03016752 A EP03016752 A EP 03016752A EP 03016752 A EP03016752 A EP 03016752A EP 1415906 B1 EP1415906 B1 EP 1415906B1
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EP
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Prior art keywords
coolant
gas
gas generating
generator
tank
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Expired - Lifetime
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EP03016752A
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German (de)
French (fr)
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EP1415906A1 (en
Inventor
Claus Cohrt
Jürgen Dr. Schaper
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Airbus DS GmbH
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EADS Space Transportation GmbH
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63GOFFENSIVE OR DEFENSIVE ARRANGEMENTS ON VESSELS; MINE-LAYING; MINE-SWEEPING; SUBMARINES; AIRCRAFT CARRIERS
    • B63G8/00Underwater vessels, e.g. submarines; Equipment specially adapted therefor
    • B63G8/14Control of attitude or depth
    • B63G8/22Adjustment of buoyancy by water ballasting; Emptying equipment for ballast tanks

Definitions

  • the invention relates to a device for generating lift for underwater vehicles in the form of a gas generating plant, in which by the chemical reaction and / or catalytic decomposition of a liquid energy carrier buoyant gases are generated, wherein the liquid energy carrier by the pressure of a delivery gas, which is provided by a second gas generating device, is pressed from a reservoir into a reaction chamber.
  • the object of the invention is to provide a device of the type mentioned in such a way that it has a simple structure and the lowest possible mass and that it allows at the same time in any large diving depth compliance with the required short Austriebs committee.
  • the invention solves this problem by a device in which between the second gas generating device and the reservoir for the liquid energy carrier, a pressure relief valve is arranged, whose overpressure outlet is connected to the submersible to be filled with the buoyancy gas.
  • the device according to the invention has the advantage that its gas generating characteristic remains the same in each submerged depth, wherein the pressure relief valve provided according to the invention in any submerged depth a constant pressure difference between the conveying gas and the environment, ie the immersion cell, guaranteed. Due to this constant pressure difference, the consistency of the discharge time is guaranteed in any depth.
  • the device according to the invention has the advantage that it can be used for any gas generating reaction.
  • conveying gas generators In connection with the device according to the invention, advantageously a number of possible types of conveying gas generators can be used, which in themselves are already known. These include solid propellant (powder) generators, where powder cartridges are used to generate gas. Such generators are used, for example, as a drive of micro gas turbines for the power supply of missiles use.
  • solid propellant (powder) generators where powder cartridges are used to generate gas.
  • Such generators are used, for example, as a drive of micro gas turbines for the power supply of missiles use.
  • the combustion chamber pressure must be so high that even in the largest depth of a supercritical flow takes place, which ensures a constant burning time in all depths; that further, the fuel must be heavily underbalanced, so that no oxygen components are contained in the conveying gas, and that finally the combustion chamber temperature must be as low as possible.
  • the transport gas required for the expulsion of the hydrazine from the Bladdertank is supplied by a small gas generator, which is designed in its gas supply quantity to the largest depth, which is required for the device according to the invention.
  • the delivery gas pressure will be much higher due to the lower ambient pressure, as he overcomes all pressure losses and displacement work would be required.
  • This overpressure is reduced by the invention provided overpressure valve, which is designed so that it releases with increasing pressure, ie with decreasing Aussignstauchtiefe, ever larger Abströmquerexcellente, so that even then the permissible and also on the Austreibzeitbegrenzung required pressure difference between the hydrazine tank and the Environment, ie the immersion cell is not exceeded.
  • a so-called hydrofuel generator in which a water-reactive metal hydride, preferably lithium hydride, is reacted with water to form hydrogen and metal hydroxide.
  • the water can be added to the freezing point lowering, for example, with lithium chloride or methyl or ethyl alcohol.
  • the device according to the invention advantageously cools the conveying gas before it enters the tank. This advantageously takes place in the form of a heat exchange cooling with the ambient water in the immersion cell, wherein the required heat exchange surface can be reduced by the addition of coolants in the hot conveying gas jet.
  • Suitable coolants may be, for example, ammonia (NH 3 ) or ammonium carbonate, both of which may be used neat or in supersaturated aqueous solution.
  • the provision of the lifting gas takes place by means of a powder generator.
  • the generated gas flows via a line 2 into a coolant container 3, in which a pre-cooling as well as a loading with an additional gas produced here takes place.
  • a pressure relief valve 4 which ensures a constant pressure difference between the conveying gas and the environment of the generator, excess gas generated in the environment, ie in this case in a submersible 5, flow out.
  • the amount of gas required for the hydrazine expulsion flows via a line 6 into a heat exchanger 7 and is brought in this with ambient water 8 to the required temperature level.
  • the cooled gas flows via another line 9 into a hydrazine container 10, in which it acts on a bladder 11 and thereby the in this container 10 located hydrazine 12 via an outlet 13 into a gas generator 14 promotes where its decomposition takes place.
  • the decomposition gases are finally blown through outflow openings 15 into the surrounding immersion cell.
  • a compressed gas cylinder 16 supplies, via a pressure reducing and regulating valve 17, a pressurized gas which delivers the hydrazine 19 located in a small bladder tank 18 into a gas generator 20, where it is again decomposed.
  • the resulting decomposition gases flow, as in the case of the embodiment described above, again via a line 21 through a coolant tank 3.
  • the further path of the conveying gas corresponds including the pressure relief valve 4 completely the arrangement described above.
  • the delivery of the delivery gas by a hydrofuel generator there is a waterproof, filled with a water-reactive fuel (Hydrofuel) cartridge 22 in a generator housing 23, in which also water with a freezing point-lowering additive 24 is located, which simultaneously assumes the function of the coolant when the amount of conveying gas generated the stoichiometric amount exceeds.
  • Hydrofuel water-reactive fuel
  • the shell of the cartridge 22 is opened, so that the water receives access to the hydrofuel and uses the gas-generating reaction.
  • Coolant both a separate coolant tank and a heat exchanger aftercooler superfluous.
  • the pressure relief valve 4 also assumes the same function as in the case of the embodiments described above.
  • the further path of the gas likewise corresponds to the scheme already described with reference to the exemplary embodiments described above.
  • the fuel requirement for the production of delivery gas by means of the device according to the invention can be estimated approximately, if the delivery gas temperature is introduced as a parameter and the water vapor content of the delivery gas is calculated according to the vapor pressure as partial pressure assuming a temperature-dependent local condensation loss, an influence of coolants however, is not taken into account as a possible additional gas supplier. Then there is a maximum fuel requirement in the range of about 3 kilograms.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Fuel Cell (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

Device for driving underwater vehicles comprises an overpressure valve (4) arranged between a gas generating unit (1) and a supply vessel (10) for an energy carrier. The overpressure outlet of the valve is connected to an immersion cell (5) to be filled with drive gases.

Description

Die Erfindung betrifft eine Vorrichtung zur Auftriebserzeugung für Unterwasserfahrzeuge in Form einer Gaserzeugungsanlage, in der durch die chemische Reaktion und/oder katalytische Zersetzung eines flüssigen Energieträgers Auftriebsgase erzeugt werden, wobei der flüssige Energieträger durch den Druck eines Fördergases, das von einer zweiten Gaserzeugungsvorrichtung bereitgestellt wird, aus einem Vorratsbehälter in eine Reaktionskammer gepreßt wird.The invention relates to a device for generating lift for underwater vehicles in the form of a gas generating plant, in which by the chemical reaction and / or catalytic decomposition of a liquid energy carrier buoyant gases are generated, wherein the liquid energy carrier by the pressure of a delivery gas, which is provided by a second gas generating device, is pressed from a reservoir into a reaction chamber.

Eine derartige Vorrichtung ist aus der EP 0 128 260 A1 bekannt geworden. Bei dieser bekannten Vorrichtung ist vorgeschlagen worden, anstelle der bei derartigen Gaserzeugungsanlagen ansonsten üblichen verwendung von Druckgas-Stickstoff als Austreibmedium für das Hydrazin eine zweite, wesentlich kleiner bemessene Gaserzeugungsvorrichtung zu verwenden, der eine Rückkopplungs- und verstärkungsvorrichtung derart zugeordnet ist, daß die Ausblaszeit auf vorgebbare Weise an den Einsatz-Tauchtiefendruck angepaßt werden kann. Durch diese bekannte Vorrichtung wird eine Begrenzung der maximal sinnvollen operationellen Einsatztiefe derartiger Generatoren, die bei einer Verwendung von Stickstoff als Austreibmedium gegeben ist und die mit den steigenden Tauchtiefenanforderungen moderner Unterseeboote nicht mehr kompatibel ist, vermieden.Such a device has become known from EP 0 128 260 A1. In this known device has been proposed, instead of using in such gas generators otherwise customary use of compressed gas nitrogen as Ausreibmedium for the hydrazine a second, much smaller dimensioned gas generating device, which is associated with a feedback and amplification device such that the Ausblaszeit to specifiable Be adapted to the mission diving depth pressure can. By this known device is a limitation of the maximum useful operational depth of such generators, which is given when using nitrogen as Ausreibmedium and which is no longer compatible with the increasing depth requirements of modern submarines, avoided.

Andere Vorschläge zur Überwindung dieser Problematik sehen daneben eine Aufheizung eines Druckgasbehälters für den Stickstoff während dessen Entleerung oder aber eine Pumpenförderung des Hydrazins vor. Den bekannten Lösungen gemeinsam ist dabei, daß sie einen vergleichsweise komplizierten Aufbau erfordern.Other proposals for overcoming this problem see next to a heating of a compressed gas tank for the nitrogen during its emptying or before a pump delivery of the hydrazine ago. The known solutions in common is that they require a relatively complicated structure.

Aufgabe der Erfindung ist es, eine Vorrichtung der eingangs genannten Art so auszubilden, daß sie einen einfachen Aufbau und eine möglichst geringe Masse aufweist und daß sie zugleich auch in beliebig großen Tauchtiefen die Einhaltung der geforderten kurzen Austriebszeiten ermöglicht.The object of the invention is to provide a device of the type mentioned in such a way that it has a simple structure and the lowest possible mass and that it allows at the same time in any large diving depth compliance with the required short Austriebszeiten.

Die Erfindung löst diese Aufgabe durch eine Vorrichtung, bei der zwischen der zweiten Gaserzeugungsvorrichtung und dem Vorratsbehälter für den flüssigen Energieträger ein Überdruckventil angeordnet ist, dessen Überdruck-Auslaß mit der mit den Auftriebsgasen zu füllenden Tauchzelle verbunden ist.The invention solves this problem by a device in which between the second gas generating device and the reservoir for the liquid energy carrier, a pressure relief valve is arranged, whose overpressure outlet is connected to the submersible to be filled with the buoyancy gas.

Die erfindungsgemäße Vorrichtung besitzt dabei den Vorteil, daß ihre Gaserzeugungscharakteristik in jeder Tauchtiefe gleich bleibt, wobei das erfindungsgemäß vorgesehene Überdruckventil in jeder beliebigen Tauchtiefe eine konstante Druckdifferenz zwischen dem Fördergas und der Umgebung, d.h. der Tauchzelle, gewährleistet. Durch diese konstante Druckdifferenz ist in jeder beliebigen Tauchtiefe die Konstanz der Austreibzeit gewährleistet. Zugleich besitzt die erfindungsgemäße vorrichtung den Vorteil, daß sie für jede Gaserzeugungsreaktion einsetzbar ist.The device according to the invention has the advantage that its gas generating characteristic remains the same in each submerged depth, wherein the pressure relief valve provided according to the invention in any submerged depth a constant pressure difference between the conveying gas and the environment, ie the immersion cell, guaranteed. Due to this constant pressure difference, the consistency of the discharge time is guaranteed in any depth. At the same time, the device according to the invention has the advantage that it can be used for any gas generating reaction.

Im Zusammenhang mit der erfindungsgemäßen Vorrichtung können in vorteilhafter Weise eine Reihe möglicher Typen von Fördergas-Generatoren zum Einsatz gelangen, die für sich genommen bereits bekannt sind. Hierzu zählen Festtreibstoff-(Pulver)-Generatoren, bei denen Pulverkartuschen zur Gaserzeugung dienen. Derartige Generatoren finden zum Beispiel als Antrieb von Kleinstgasturbinen für die Stromversorgung von Flugkörpern Verwendung. Bei ihrer Auslegung für eine Verwendung im Zusammenhang mit der Vorrichtung nach der Erfindung muß jedoch berücksichtigt werden, daß der Brennkammerdruck so hoch sein muß, daß auch in der größten Tauchtiefe eine überkritische Abströmung erfolgt, womit in allen Tauchtiefen eine konstante Brennzeit gewährleistet ist; daß weiterhin der Treibstoff stark unterbilanziert sein muß, so daß keine Sauerstoffanteile im Fördergas enthalten sind, und daß schließlich die Brennkammertemperatur möglichst gering sein muß.In connection with the device according to the invention, advantageously a number of possible types of conveying gas generators can be used, which in themselves are already known. These include solid propellant (powder) generators, where powder cartridges are used to generate gas. Such generators are used, for example, as a drive of micro gas turbines for the power supply of missiles use. In their design for use in connection with the device according to the invention, however, must be taken into account that the combustion chamber pressure must be so high that even in the largest depth of a supercritical flow takes place, which ensures a constant burning time in all depths; that further, the fuel must be heavily underbalanced, so that no oxygen components are contained in the conveying gas, and that finally the combustion chamber temperature must be as low as possible.

Das für die Austreibung des Hydrazins aus dem Bladdertank benötigte Fördergas wird durch einen kleinen Gasgenerator geliefert, der in seiner Gasliefermenge auf die größte Tauchtiefe ausgelegt ist, die für die erfindungsgemäße Vorrichtung gefordert ist. Bei einer Inbetriebnahme dieser Vorrichtung in geringeren Tauchtiefen wird daher aufgrund des geringeren Umgebungsdruckes der Fördergasdruck viel höher sein, als er zur Überwindung aller Druckverluste und verdrängungsarbeit erforderlich wäre. Dieser Überdruck wird durch das erfindungsgemäß vorgesehene Überdruckventil abgebaut, das so konzipiert ist, daß es mit steigendem Überdruck, d.h. mit geringer werdender Auslösungstauchtiefe, immer größere Abströmquerschnitte freigibt, so daß auch dann die zulässige und auch über die Austreibzeitbegrenzung geforderte Druckdifferenz zwischen dem Hydrazinbehälter und der Umgebung, d.h. der Tauchzelle, nicht überschritten wird.The transport gas required for the expulsion of the hydrazine from the Bladdertank is supplied by a small gas generator, which is designed in its gas supply quantity to the largest depth, which is required for the device according to the invention. When commissioning this device in lower depths, therefore, the delivery gas pressure will be much higher due to the lower ambient pressure, as he overcomes all pressure losses and displacement work would be required. This overpressure is reduced by the invention provided overpressure valve, which is designed so that it releases with increasing pressure, ie with decreasing Auslösungstauchtiefe, ever larger Abströmquerschnitte, so that even then the permissible and also on the Austreibzeitbegrenzung required pressure difference between the hydrazine tank and the Environment, ie the immersion cell is not exceeded.

Bei der ebenfalls möglichen Verwendung eines Hydrazin-Generators wird in vorteilhafter Weise ein kleiner Höchstdruck-Generator mit Kaltgas-(Stickstoff)-Förderung eingesetzt. Schließlich ist die verwendung eines sogenannten Hydrofuel- Generators möglich, bei dem ein wasserreaktives Metallhydrid, vorzugsweise Lithiumhydrid, mit Wasser zu Wasserstoff und Metallhydroxid umgesetzt wird. Das Wasser kann dabei zur Gefrierpunktabsenkung zum Beispiel mit Lithiumchlorid oder Methyl- bzw. Äthylalkohol versetzt werden.When also possible use of a hydrazine generator, a small maximum pressure generator with cold gas (nitrogen) promotion is used advantageously. Finally, the use of a so-called hydrofuel generator is possible in which a water-reactive metal hydride, preferably lithium hydride, is reacted with water to form hydrogen and metal hydroxide. The water can be added to the freezing point lowering, for example, with lithium chloride or methyl or ethyl alcohol.

Geht man von einer maximal zulässigen Fördergastemperatur im Hydrazinbehälter von 240°C aus, so erfolgt bei der erfindungsgemäßen Vorrichtung in vorteilhafter Weise eine Kühlung des Fördergases vor dem Eintritt in den Behälter. In vorteilhafter Weise geschieht dies in Form einer Wärmeaustauschkühlung mit dem Umgebungswasser in der Tauchzelle, wobei sich durch die Zugabe von Kühlstoffen in den heißen Fördergasstrahl die benötigte Wärmeaustauschfläche verringern läßt. Als geeignete Kühlstoffe können beispielsweise Ammoniak (NH3) oder Ammoniumcarbonat dienen, wobei beide Stoffe rein oder in übersättigter wäßriger Lösung verwendet werden können.If one starts from a maximum permissible conveying gas temperature in the hydrazine tank of 240 ° C., the device according to the invention advantageously cools the conveying gas before it enters the tank. This advantageously takes place in the form of a heat exchange cooling with the ambient water in the immersion cell, wherein the required heat exchange surface can be reduced by the addition of coolants in the hot conveying gas jet. Suitable coolants may be, for example, ammonia (NH 3 ) or ammonium carbonate, both of which may be used neat or in supersaturated aqueous solution.

Nachfolgend soll die Erfindung anhand von in der Zeichnung dargestellten Ausführungsbeispielen näher beschrieben werden. Es zeigen

Fig. 1
eine Vorrichtung zur Auftriebserzeugung mit einem Pulvergenerator zur Bereitstellung des Fördergases,
Fig. 2
eine vorrichtung zur Auftriebserzeugung mit einem Hydrazin-Generator zur Bereitstellung des Fördergases und
Fig. 3
eine Vorrichtung zur Auftriebserzeugung mit einem Hydrofuel-Generator zur Bereitstellung des Fördergases.
The invention will be described in more detail with reference to embodiments illustrated in the drawings. Show it
Fig. 1
a device for generating lift with a powder generator for providing the delivery gas,
Fig. 2
a device for generating lift with a hydrazine generator for providing the delivery gas and
Fig. 3
a device for generating lift with a hydrofuel generator for providing the conveying gas.

Bei der in Fig. 1 dargestellten Vorrichtung zur Auftriebserzeugung erfolgt die Bereitstellung des Auftriebsgases durch einen Pulvergenerator. Bei diesem strömt nach der Zündung einer pulverkartusche 1 das erzeugte Gas über eine Leitung 2 in einen Kühlstoffbehälter 3, in dem eine vorkühlung sowie eine Beladung mit einem hier erzeugten Zusatzgas erfolgt. An einem Überdruckventil 4, das eine konstante Druckdifferenz zwischen dem Fördergas und der Umgebung des Generators gewährleistet, kann überschüssig erzeugtes Gas in die Umgebung, d.h. in diesem Fall in eine Tauchzelle 5, abströmen. Die für die Hydrazin-Austreibung benötigte Gasmenge strömt über eine Leitung 6 in einen Wärmetauscher 7 und wird in diesem mit Umgebungswasser 8 auf das erforderliche Temperaturniveau gebracht. Das gekühlte Gas strömt über eine weitere Leitung 9 in einen Hydrazin-Behälter 10, in dem es einen Bladder 11 beaufschlagt und dadurch das in diesem Behälter 10 befindliche Hydrazin 12. über einen Auslaß 13 in einen Gasgenerator 14 fördert, wo dessen Zersetzung erfolgt. Die Zersetzungsgase werden schließlich über Ausströmöffnungen 15 in die umgebende Tauchzelle ausgeblasen.In the case of the device for generating lift shown in FIG. 1, the provision of the lifting gas takes place by means of a powder generator. In this case, after the ignition of a powder cartridge 1, the generated gas flows via a line 2 into a coolant container 3, in which a pre-cooling as well as a loading with an additional gas produced here takes place. At a pressure relief valve 4, which ensures a constant pressure difference between the conveying gas and the environment of the generator, excess gas generated in the environment, ie in this case in a submersible 5, flow out. The amount of gas required for the hydrazine expulsion flows via a line 6 into a heat exchanger 7 and is brought in this with ambient water 8 to the required temperature level. The cooled gas flows via another line 9 into a hydrazine container 10, in which it acts on a bladder 11 and thereby the in this container 10 located hydrazine 12 via an outlet 13 into a gas generator 14 promotes where its decomposition takes place. The decomposition gases are finally blown through outflow openings 15 into the surrounding immersion cell.

Bei der in Fig. 2 dargestellten Vorrichtung zur Auftriebserzeugung erfolgt die Bereitstellung des Fördergases durch einen Hydrazin-Generator. Eine Druckgasflasche 16 liefert in diesem Fall über ein Druckreduzier- und -regelventil 17 ein Druckgas, das das in einem kleinen Bladdertank 18 befindliche Hydrazin 19 in einen Gasgenerator 20 fördert, wo es wiederum zersetzt wird. Die dabei entstehenden zersetzungsgase strömen, wie im Fall des vorangehend beschriebenen Ausführungsbeispiels, wiederum über eine Leitung 21 durch einen Kühlstoffbehälter 3. Der weitere Weg des Fördergases entspricht einschließlich des Überdruckventils 4 vollständig der vorangehend beschriebenen Anordnung.In the device for generating lift shown in Fig. 2, the delivery of the conveying gas by a hydrazine generator. In this case, a compressed gas cylinder 16 supplies, via a pressure reducing and regulating valve 17, a pressurized gas which delivers the hydrazine 19 located in a small bladder tank 18 into a gas generator 20, where it is again decomposed. The resulting decomposition gases flow, as in the case of the embodiment described above, again via a line 21 through a coolant tank 3. The further path of the conveying gas corresponds including the pressure relief valve 4 completely the arrangement described above.

Bei der in Fig. 3 dargestellten Vorrichtung zur Auftriebserzeugung erfolgt die Bereitstellung des Fördergases durch einen Hydrofuel-Generator. Dabei befindet sich eine wasserdichte, mit einem wasserreaktiven Treibstoff (Hydrofuel) gefüllte Kartusche 22 in einem Generatorgehäuse 23, in dem sich außerdem Wasser mit einem Gefrierpunkt-senkenden Zusatz 24 befindet, das gleichzeitig die Funktion des Kühlmittels übernimmt, wenn die erzeugte Fördergasmenge die stöchiometrische Menge überschreitet. Zur Inbetriebnahme des Generators wird die Hülle der Kartusche 22 geöffnet, so daß das Wasser Zutritt zum Hydrofuel erhält und die gaserzeugende Reaktion einsetzt. In der Regel macht das hier eingebrachte Kühlmedium sowohl einen separaten Kühlstoff-Behälter als auch einen Wärmetauscher-Nachkühler überflüssig. Das Überdruckventil 4 übernimmt auch hier die gleiche Funktion wie im Fall der vorangehend beschriebenen Ausführungsbeispiele. Der weitere Weg des Gases entspricht ebenfalls dem bereits anhand der vorangehend beschriebenen Ausführungsbeispiele dargestellten Schema.In the device for generating lift shown in Fig. 3, the delivery of the delivery gas by a hydrofuel generator. In this case, there is a waterproof, filled with a water-reactive fuel (Hydrofuel) cartridge 22 in a generator housing 23, in which also water with a freezing point-lowering additive 24 is located, which simultaneously assumes the function of the coolant when the amount of conveying gas generated the stoichiometric amount exceeds. To start up the generator, the shell of the cartridge 22 is opened, so that the water receives access to the hydrofuel and uses the gas-generating reaction. In general, this is what is introduced here Coolant both a separate coolant tank and a heat exchanger aftercooler superfluous. The pressure relief valve 4 also assumes the same function as in the case of the embodiments described above. The further path of the gas likewise corresponds to the scheme already described with reference to the exemplary embodiments described above.

Der Treibstoffbedarf für die Erzeugung von Fördergas mittels der Vorrichtung nach der Erfindung läßt sich in etwa abschätzen, sofern die Fördergastemperatur als Parameter eingeführt wird und der Wasserdampfgehalt des Fördergases entsprechend dem Dampfdruck als Partialdruck unter der Annahme eines temperaturabhängigen örtlichen Kondensationsverlustes eingerechnet wird, ein Einfluß von Kühlstoffen als möglichem zusätzlichen Gaslieferanten jedoch nicht berücksichtigt wird. Dann ergibt sich ein maximaler Treibstoffbedarf im Bereich von etwa 3 Kilogramm.The fuel requirement for the production of delivery gas by means of the device according to the invention can be estimated approximately, if the delivery gas temperature is introduced as a parameter and the water vapor content of the delivery gas is calculated according to the vapor pressure as partial pressure assuming a temperature-dependent local condensation loss, an influence of coolants however, is not taken into account as a possible additional gas supplier. Then there is a maximum fuel requirement in the range of about 3 kilograms.

Claims (11)

  1. A device for generating buoyancy for submersible watercraft in the form of a gas generating device, in which buoyancy gases are generated by chemical reaction and/or catalytic decomposition of a liquid energy source, the liquid energy source being forced out of a storage tank into a reaction chamber by the pressure of a carrier gas, which is provided by a second gas generating device, characterised in that a pressure relief valve (4) is arranged between the second gas generating device (1) and the storage tank (10) for the liquid energy source, the pressure relief outlet of which valve is connected to the diving tank (5) to be filled with the buoyancy gases.
  2. A device according to claim 1, characterised in that the second gas generating device consists of a powder generator (1).
  3. A device according to claim 1, characterised in that the second gas generating device consists of a hydrazine generator (16-20).
  4. A device according to claim 1, characterised in that the second gas generating device consists of a generator (22, 23) pressurisable by water-reactive fuel.
  5. A device according to any one of claims 1 to 4, characterised in that the hot reaction gases may be cooled in a coolant tank (3).
  6. A device according to claim 5, characterised in that the coolant located in the coolant tank (3) consists of an aqueous solution of gases.
  7. A device according to claim 6, characterised in that the coolant consists of ammonia.
  8. A device according to claim 5, characterised in that the coolant located in the coolant tank (3) consists of salts.
  9. A device according to claim 8, characterised in that the coolant consists of ammonium carbonate.
  10. A device according to claim 5, characterised in that the coolant located in the coolant container (3) consists of an organic fluid.
  11. A device according to claim 10, characterised in that the coolant consists of a lower alcohol.
EP03016752A 2002-10-30 2003-07-23 Arrangement for generating buoyancy in a submersible watercraft Expired - Lifetime EP1415906B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10250557A DE10250557C1 (en) 2002-10-30 2002-10-30 Device for driving underwater vehicles comprises an overpressure valve arranged between a gas generating unit and a supply vessel for an energy carrier
DE10250557 2002-10-30

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EP1415906A1 EP1415906A1 (en) 2004-05-06
EP1415906B1 true EP1415906B1 (en) 2006-12-06

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DE102004048311B4 (en) 2004-10-05 2008-08-21 Howaldtswerke-Deutsche Werft Gmbh Blower for a submarine
DE102010047677B4 (en) * 2010-10-06 2012-09-13 Bayern-Chemie Gesellschaft Für Flugchemische Antriebe Mbh Device for pressing a buoyancy tank
DE102012202544A1 (en) 2012-02-20 2013-08-22 Thyssenkrupp Marine Systems Gmbh A method of launching a submersible submersible and an inflator for a submarine
DE102021202158B4 (en) 2021-03-05 2023-01-19 Thyssenkrupp Ag Emergency inflation system for a submarine

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3320159A1 (en) * 1983-06-03 1984-12-06 Erno Raumfahrttechnik Gmbh, 2800 Bremen RESCUE DEVICE FOR UNDERWATER VEHICLES
DE4338340C2 (en) * 1993-11-10 1996-03-21 Daimler Benz Aerospace Ag Buoyancy generating device

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EP1415906A1 (en) 2004-05-06
ATE347517T1 (en) 2006-12-15
DE50305890D1 (en) 2007-01-18
DE10250557C1 (en) 2003-10-30

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