EP3355335B1 - Unterseesicherungsvorrichtung - Google Patents

Unterseesicherungsvorrichtung Download PDF

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Publication number
EP3355335B1
EP3355335B1 EP17153917.4A EP17153917A EP3355335B1 EP 3355335 B1 EP3355335 B1 EP 3355335B1 EP 17153917 A EP17153917 A EP 17153917A EP 3355335 B1 EP3355335 B1 EP 3355335B1
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EP
European Patent Office
Prior art keywords
fuse
subsea
pressure
feedthrough
housing
Prior art date
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Active
Application number
EP17153917.4A
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English (en)
French (fr)
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EP3355335A1 (de
Inventor
Miroslaw Rozycki
Stian Are Saether Soenderland
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.)
Siemens AG
Original Assignee
Siemens AG
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Publication date
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Priority to EP17153917.4A priority Critical patent/EP3355335B1/de
Priority to PCT/EP2017/080187 priority patent/WO2018141433A1/en
Publication of EP3355335A1 publication Critical patent/EP3355335A1/de
Application granted granted Critical
Publication of EP3355335B1 publication Critical patent/EP3355335B1/de
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/0013—Means for preventing damage, e.g. by ambient influences to the fuse
    • H01H85/0021—Means for preventing damage, e.g. by ambient influences to the fuse water or dustproof devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/0013—Means for preventing damage, e.g. by ambient influences to the fuse
    • H01H85/0021—Means for preventing damage, e.g. by ambient influences to the fuse water or dustproof devices
    • H01H85/0026—Means for preventing damage, e.g. by ambient influences to the fuse water or dustproof devices casings for the fuse and its base contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/0013—Means for preventing damage, e.g. by ambient influences to the fuse
    • H01H85/0021—Means for preventing damage, e.g. by ambient influences to the fuse water or dustproof devices
    • H01H85/003—Means for preventing damage, e.g. by ambient influences to the fuse water or dustproof devices casings for the fusible element
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/0013—Means for preventing damage, e.g. by ambient influences to the fuse
    • H01H85/0021—Means for preventing damage, e.g. by ambient influences to the fuse water or dustproof devices
    • H01H2085/0034—Means for preventing damage, e.g. by ambient influences to the fuse water or dustproof devices with molded casings

Definitions

  • the present invention relates to a subsea fuse device which may be used in electrical and electronic circuits in subsea equipment. Furthermore, the present invention relates to a subsea device comprising an electric circuitry comprising such subsea fuse device.
  • subsea devices may comprise electric and electronic circuitry.
  • the subsea devices which may comprise for example so-called subsea canisters, may be arranged at depths of several hundred or even several thousand meters, for example at a depth of 3000 m.
  • Subsea devices may be pressure compensated such that the inside pressure essentially corresponds to an environmental pressure which may be in a range of a several hundred bars, for example 300 bars at 3000 m.
  • Such pressure compensated subsea devices may be filled with a fluid, for example oil, which may be pressurized at the ambient pressure. Consequently, the very high ambient pressure is also acting on the electric or electronic circuitry arranged within the subsea device.
  • fuses are used to protect components or (sub-) circuits from overloads and short circuits.
  • Commonly used disposable fuse arrangements comprise a conductive element which will melt or vaporize if (for example in case of a fault) the current flow in the conductive element exceeds a predefined value. By melting or vaporizing the conductive element the fuse becomes not conducting and isolates the component or (sub-) circuit from the rest of the circuitry or system.
  • Co-pending European patent application EP16159003 discloses a fuse device for a pressure-compensated subsea device wherein the fuse device comprises a housing which allows the fuse's conductive element to be arranged inside the housing at much lower pressures (for example 0-2 bar) than present in the pressure-compensated device (for example 300 bar).
  • the design disclosed in EP16159003 works well with glass housings in which case the subsea fuse device may be manufactured as follows.
  • the fuse wire may be passed through the opposite ends of a glass tube such that the central section is arranged within the glass tube and a first end section and a second end section of the fuse wire are arranged at the opposite ends of the glass tube.
  • the ends of the glass tube are heated to melting point so as to form seals around the first and second end sections, respectively.
  • this heating process may damage the conductive element of the fuse or alter its characteristics so that the conductive element may melt or vaporize at a lower or higher current than the predetermined maximum current.
  • EP-A-2565899 discloses a subsea fuse device according to the preamble of claim 1.
  • a subsea fuse device exposed to a high ambient pressure when deployed comprising a fuse housing and a fuse wire.
  • the fuse wire comprises a first end section, a second end section, and a central section.
  • the fuse housing comprises a pressure-resistant outer envelope made of an isolating material enclosing a low-pressure hollow space.
  • the fuse housing further comprises a first metalized feedthrough and a second metalized feedthrough which is electrically isolated from the first feedthrough by the outer envelope.
  • the central section of the fuse wire is arranged within the low-pressure hollow space.
  • the first end section of the fuse wire extends through the first metalized feedthrough which is electrically and mechanically connected to the first end section of the fuse wire thereby sealing the first feedthrough.
  • the second end section of the fuse wire extends through the second metalized feedthrough and is electrically and mechanically connected to the second end section of the fuse wire thereby sealing the second feedthrough.
  • the interior of the fuse housing comprising the central section of the fuse wire is completely sealed from an outside of the fuse housing.
  • the central section of the fuse wire does not come into contact with, for example, a dielectric fluid surrounding the fuse housing, and the interior of the fuse housing is protected from high pressure outside the fuse housing. Therefore, operation of the fuse wire inside the fuse housing becomes reliable, and an isolating dielectric fluid outside the fuse housing will not be contaminated by a melting or vaporizing fuse wire.
  • the sealing can be accomplished by lower temperature operations such as soldering thereby avoiding the extremely high temperatures required to melt the glass feedthroughs disclosed in EP16159003 and thus reducing the risk of damaging the fuse wire or altering its characteristics.
  • the outer envelope is pressure resistant which means that in a sealed state the pressure inside the fuse housing is independent from an environmental pressure prevailing outside the fuse housing.
  • the pressure inside the fuse housing may be 0..2 bars independent of an outside pressure which (upon deployment of the fuse) may be in a range from 10 to several hundred bars.
  • a subsea fuse device constructed in accordance with the present invention is more expensive than conventional fuse devices designed for surface deployment. It can advantageously provide the same precision and reliability at any depth and will therefore typically be deployed in installations which are, unlike surface installations, practically inaccessible to routine maintenance.
  • the outer envelope may be comprised of a single piece or comprise at least a first and a second section which are glued together.
  • At least one of the metalized feedthroughs may be constructed in the form of a metal cap (matching the shape of the respective outer end of the envelope) which seals an end of the outer envelope.
  • the isolating material used for the outer envelope may preferably be ceramic material or resin or a combination thereof.
  • the housing described above may also accommodate a standard fuse designed to operate at surface conditions.
  • the outer envelope has an essentially tubular form as this geometry best withstands pressure differences.
  • the first and second metalized feedthroughs are arranged at opposite ends of the essentially tubular envelope.
  • the hollow space may in embodiments either be evacuated (0 bar), have a gas filling at standard atmospheric pressure (around 1 bar) or double atmospheric pressure (around 2 bars) and/or be filled with sand to quench the electric arc created during the melting/vaporizing of the central section of the fuse wire.
  • the end sections and the central section of the fuse wire are made from different materials to ensure that only the central section melts/vaporizes.
  • Suitable materials include zinc, copper, silver, and aluminum and their composites.
  • a subsea device comprising an enclosure and an electric circuitry arranged within the enclosure wherein the electric circuitry comprises at least one subsea fuse device according to the invention.
  • the subsea device may be filled with a fluid such as oil and may comprise a volume/pressure compensator which balances the pressure in the enclosure to the pressure prevailing in an environment of the enclosure.
  • Fig. 1 shows a subsea device 10, for example a subsea canister, which may be arranged in a subsea environment for housing electrical components or electric circuitry 11.
  • a data and energy supply connection 12 may be provided extending from an interior of the subsea device 10 to an exterior of the subsea device 10.
  • the subsea device 10 may be arranged and operated in deepwater environments, for example at a depth of 3000 m.
  • Subsea device 10 comprises an enclosure 13 which protects the interior of the enclosure 13 from the environment, for example from salt water.
  • a massive pressure resistant outer enclosure is provided for shielding the interior from the high pressure.
  • the interior will then be at a much lower pressure, for example at atmospheric pressure, to facilitate use of electric and electronic components designed for surface use without additional measures.
  • Such enclosures have to have a certain minimum wall strength in order to withstand high differential pressures and are consequently bulky and heavy.
  • This first principal design variant is of no further interest here as standard fuses can be used therein.
  • pressurized (or pressure compensated) enclosures 13 which comprise a volume/pressure compensator 14 for balancing the pressure in the enclosure to the pressure prevailing in the ambient seawater.
  • the pressure compensated enclosure 13 is generally filled with a fluid 17, usually oil, because it is a good thermal conductor, incompressible and electrically isolating so that electrical components in enclosure need not be isolated from contact with the fluid.
  • Pressure/volume compensator 14 compensates variations in the volume of fluid 17 filling enclosure 13, which may occur due to variations in ambient pressure or in temperature. Temperature changes can be caused by deployment at the subsea location or by internal heating, for example due to electric power dissipation.
  • Electric circuitry 11 may comprise sub circuits 15 and 16. Some of the sub circuits 15, 16 may have to be protected from overload and short circuits. Therefore, in the power supply connection 12 to the sub circuit 15 a subsea fuse device 100/200 is provided.
  • the electric circuitry 11 may comprise for example a printed circuit board on which the subsea fuse device 100/200 and the sub circuits 15, 16 are arranged.
  • the interior of enclosure 13 may be filled with a fluid 17, for example dielectric oil. Therefore subsea fuse device 100/200, when deployed, will in most cases be surrounded by and be in direct contact with fluid 17. Furthermore, due to the pressure compensation of enclosure 13 via pressure compensator 14, fluid 17 may be pressurized at essentially the same pressure as prevailing outside the enclosure 13. In subsea applications this pressure may for example be 300 bars. Therefore subsea fuse device 100/200 has to operate reliably under such pressure conditions.
  • a fluid 17 for example dielectric oil
  • Fig. 2 shows a first embodiment of a suitable subsea fuse device 100 in more detail.
  • Subsea fuse device 100 comprises a fuse housing 101 and a fuse wire.
  • the fuse wire is composed of three sections: a first end section 102, a second end section 103 and a central section 104.
  • the different sections of the fuse wire may each have different properties.
  • end sections 102 and 103 may have different cross sections than central section 104.
  • end sections 102 and 103 may be made of a different material than the central section 104.
  • sections 102, 103 and 104 may be made of the same material and may also otherwise have similar properties such that the whole fuse wire is made of a continuous and homogeneous material.
  • Fuse housing 101 may have a tubular form and may be a ceramic tube having metal rings 110, 111 attached to the outer periphery at the tube ends.
  • Metal caps 108, 109 are provided at the tube ends for sealing the hollow space 107 enclosed by fuse housing 101 and for providing metalized feedthroughs 105, 106 for the fuse wire.
  • fuse housing 101 may be a one-piece tubular envelope which encloses hollow space 107 through which the fuse wire is extending.
  • Tubular housing 101 has at each end an opening upon which metal caps 108, 109 reside.
  • First metal cap 108 has a first feedthrough opening 105 and second metal cap 109 has a second feedthrough opening 106.
  • Central section 104 of the fuse wire is arranged within hollow space 107 of fuse housing 101.
  • First end section 102 of the fuse wire extends through first feedthrough opening 105.
  • Second end section 103 of the fuse wire extends through second feedthrough opening 106.
  • a section of the housing's outer circumferential surface is metalized to form metal rings 110, 111, for example by mechanically, physically or chemically depositing metal on the outer surface of the tube ends.
  • First end section 102 is fed through first feedthrough opening 105 in first metal cap 108.
  • First feedthrough opening 105 is sealed by soldering first end section 102 to first feedthrough opening 105 along the circumference of first feedthrough opening 105.
  • Second end section 103 is fed through second feedthrough opening 106 in second metal cap 109.
  • Second feedthrough opening 106 is sealed by soldering second end section 103 to second feedthrough opening 106 along the circumference of second feedthrough opening 106.
  • First metal cap 108 is attached to the first opening of tubular housing 101.
  • the first opening of tubular housing 101 is sealed by soldering first metal cap 108 to first metal ring 110 along its entire circumference.
  • Second metal cap 109 is attached to the second opening of tubular housing 101.
  • the second opening of tubular housing 101 is sealed by soldering second metal cap 109 to second metal ring 111 along its entire circumference.
  • subsea fuse device 100 of Fig. 2 and the use of a soldering method for sealing the outer envelope ensures that the fuse wire is at no time during manufacture exposed to the high temperatures needed to melt glass.
  • central section 104 (such as diameter, length, and composition) of the fuse wire are chosen such that central section 104 melts or vaporizes when a predetermined electrical current flowing through the fuse wire is exceeded.
  • central section 104 may melt or vaporize without contaminating fluid 17.
  • Housing 101 and caps 108, 109 are designed to withstand high ambient pressures.
  • a tubular form is chosen for housing 101 as it provides significant pressure resistance.
  • housing 101 may be filled with sand. Filling housing 101 with sand however has a more important benefit: it quenches the electric arc created during the melting/vaporizing of the central section of the fuse wire.
  • hollow space 107 of fuse housing 101 may be filled with a gas or produced with vacuum depending on the voltage level which is used for supplying the sub circuit 15.
  • FIG. 4 A variant of the embodiment of the present invention described with reference to Fig. 2 is shown in Fig. 4 and denoted with reference numeral 100'.
  • central section 104 of the fuse wire is replaced with an off-the-shelf fuse 404 designed to operate at surface pressure conditions. Since fuse housing 101 can maintain surface pressure conditions in hollow space 107 even if fuse device 100' is deployed at great depths the performance of conventional fuse 404 will be within its specification. Otherwise considerations discussed with reference to Fig. 2 apply mutatis mutandis to the embodiment shown in Fig. 4 .
  • Subsea fuse device 200 comprises a fuse housing 201 and a fuse wire.
  • fuse housing 201 may comprise two sections 201a, 201b. In yet other embodiments these sections may be identical to save manufacturing cost.
  • design 100 as discussed with reference to Figs. 2 , 4 may comprise a two-part housing 101. It should further be noted that designs involving three or more housing sections are also possible.
  • housing sections 201a, 201b are glued together (shown schematically by a line separating sections 201a and 201b).
  • the fuse wire is composed of three sections: a first end section 202, a second end section 203 and a central section 204.
  • the different sections of the fuse wire may each have different properties.
  • end sections 202 and 203 may have different cross sections than central section 204.
  • end sections 202 and 203 may be made of a different material than the central section 204.
  • sections 202, 203 and 204 may be made of the same material and may also otherwise have similar properties such that the whole fuse wire is made of a continuous and homogeneous material.
  • Two-part fuse housing 201 may have a tubular form the cross-section of which becomes smaller towards both ends. At each end a metalized feedthrough 205, 206 is provided for the fuse wire.
  • two-part fuse housing 201 may be a tubular envelope which encloses hollow space 207 through which the fuse wire is extending.
  • Tubular housing 201 has at its first end a first feedthrough opening 205 and at its second end a second feedthrough opening 206.
  • Central section 204 of the fuse wire is arranged within hollow space 207 of fuse housing 201.
  • First end section 202 of the fuse wire extends through first feedthrough opening 205.
  • Second end section 203 of the fuse wire extends through second feedthrough opening 206.
  • Both feedthrough openings 205, 206 of tubular housing 201 are metalized at least on their inner circumferential surface, for example by mechanically, physically or chemically depositing metal on the inner surface of the feedthrough openings.
  • First end section 202 is fed through first feedthrough opening 205 which is sealed by soldering first end section 202 to first feedthrough opening 205 along the circumference of first feedthrough opening 205.
  • Second end section 203 is fed through second feedthrough opening 206 which is sealed by soldering second end section 203 to second feedthrough opening 206 along the circumference of second feedthrough opening 206.
  • subsea fuse device 200 of Fig. 3 and the use of a soldering method for sealing the outer envelope ensures that the fuse wire is at no time during manufacture exposed to the high temperatures needed to melt glass.
  • central section 204 (such as diameter, length, and composition) of the fuse wire are chosen such that central section 204 melts or vaporizes when a predetermined electrical current flowing through the fuse wire is exceeded.
  • housing 201 As housing 201 is completely sealed the oil or other fluid 17 typically present in a pressure-compensated subsea enclosure 13 cannot enter hollow space 207. Thus, the properties of the fuse device remain unaffected by the presence of fluid 17. Also, central section 204 may melt or vaporize without contaminating fluid 17.
  • Housing 201 is designed to withstand high ambient pressures.
  • a tubular form is chosen for housing 201 as it provides significant pressure resistance.
  • housing 201 may be filled with sand. Filling housing 201 with sand however has a more important benefit: it quenches the electric arc created during the melting/vaporizing of the central section of the fuse wire.
  • hollow space 207 of fuse housing 201 may be filled with a gas or produced with vacuum depending on the voltage level which is used for supplying the sub circuit 15.
  • FIG. 5 A variant of the embodiment of the present invention described with reference to Fig. 3 is shown in Fig. 5 and denoted with reference numeral 200'.
  • central section 204 of the fuse wire is replaced with an off-the-shelf fuse 404 designed to operate at surface pressure conditions.
  • fuse housing 201 can maintain surface pressure conditions in hollow space 207 even if fuse device 200' is deployed at great depths the performance of conventional fuse 404 will be within its specification.
  • the otherwise optional two-part design housing 201 becomes a necessity: housing sections 201a, 201b are applied during manufacture of the fuse device from both sides onto off-the-shelf fuse 404, glued together and later sealed at the feedthrough openings by way of soldering as described above. Otherwise considerations discussed with reference to Fig. 3 apply mutatis mutandis to the embodiment shown in Fig. 5 .
  • Subsea fuse device 100, 200 enables the isolation of a faulty sub circuit 15 in an oil-filled and pressurized environment.
  • subsea fuse device 100, 200 may be used for other applications in subsea devices, for example for the implementation of redundancy and/or for providing overcurrent protection.
  • Using the subsea fuse device 100, 200 may avoid an interrupted service, the high cost of replacing the oil in case of contamination or a total failure of larger systems, for example if a fuse does not break as intended, in particular in subsea devices which are often placed in high ambient pressure environments which are inaccessible, for example at the seabed, and which may make maintenance difficult and expensive.
  • a subsea fuse device could have a one-piece or multi-piece tubular fuse housing which at one end is sealed using a metal cap as shown in Fig. 2 and at the other end has a feedthrough as shown in Fig. 3 .
  • a subsea fuse device in accordance with the invention may in principle also be exposed to seawater provided the electrical connections are sufficiently insulated when deployed.
  • the invention can be employed in any environment where there is a significant differential pressure between the pressure at which the fuse reliably operates and its (target) environment.
  • a differential pressure is significant if it exceeds 25 bar. Consequently a high ambient pressure is 25 bar or more in excess of the low pressure in hollow space 107, 207.
  • the low pressure can be 0-2 bar and the high pressure can be any pressure greater than 25 bar approximately corresponding to water depths of 250 m or greater, with preferred embodiments having ambient pressures greater than 100 bar approximately corresponding to water depths of 1000 m or greater.
  • hollow space 107, 207 may be pressurized to a pressure that is high when compared to atmospheric pressure but low in comparison to the ambient pressure.
  • a gas-filled fuse housing may be pressurized at 100 bar and deployed at water depths of 3000 m approximately corresponding to an ambient pressure of 300 bar.
  • the differential pressure is 200 bar and thus significant.
  • the fuse housing only has to withstand a maximum differential pressure of 200 bar instead of 300 bar which allows a more cost-efficient production.
  • the gas for filling the fuse housing must be then chosen such that it does not impede the fuse's performance.

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  • Fuses (AREA)

Claims (12)

  1. Unterwasser-Sicherungsvorrichtung (100, 200), welche beim Einsatz einem hohen Umgebungsdruck ausgesetzt ist, umfassend:
    - ein Sicherungsgehäuse und
    - einen Sicherungsdraht, der einen ersten Endabschnitt (102, 202), einen zweiten Endabschnitt (103, 203) und einen mittleren Abschnitt (104, 204, 404) umfasst,
    wobei das Sicherungsgehäuse umfasst:
    - eine druckfeste äußere Hülle (101, 201), die aus einem isolierenden Material hergestellt ist und einen Niederdruckhohlraum (107, 207) umschließt, wobei der mittlere Abschnitt (104, 204) des Sicherungsdrahtes innerhalb des Niederdruckhohlraums (107, 207) angeordnet ist, gekennzeichnet durch
    - eine erste metallisierte Durchführung (105, 205),
    - eine zweite metallisierte Durchführung (106, 206), welche durch die äußere Hülle von der ersten Durchführung (105, 205) elektrisch isoliert ist,
    wobei
    - der erste Endabschnitt (102, 202) des Sicherungsdrahtes sich durch die erste metallisierte Durchführung (105, 205) hindurch erstreckt,
    - die erste metallisierte Durchführung (105, 205) mit dem ersten Endabschnitt (102, 202) des Sicherungsdrahtes elektrisch und mechanisch verbunden ist, wobei die erste Durchführung (105, 205) abgedichtet wird,
    - der zweite Endabschnitt (103, 203) des Sicherungsdrahtes sich durch die zweite metallisierte Durchführung (106, 206) hindurch erstreckt, und
    - die zweite metallisierte Durchführung (106, 206) mit dem zweiten Endabschnitt (103, 203) des Sicherungsdrahtes elektrisch und mechanisch verbunden ist, wobei die zweite Durchführung (106, 206) abgedichtet wird.
  2. Unterwasser-Sicherungsvorrichtung nach Anspruch 1, wobei die äußere Hülle (201) den Niederdruckhohlraum (207) vollständig umschließt.
  3. Unterwasser-Sicherungsvorrichtung nach Anspruch 1 oder 2, wobei die äußere Hülle (201) einen ersten Abschnitt (201a) und einen zweiten Abschnitt (201b) umfasst, welche zusammengeklebt sind.
  4. Unterwasser-Sicherungsvorrichtung nach einem der vorhergehenden Ansprüche, wobei wenigstens eine der metallisierten Durchführungen (105, 106) als eine Metallkappe ausgebildet ist, welche ein Ende der äußeren Hülle (101) abdichtet.
  5. Unterwasser-Sicherungsvorrichtung nach einem der vorhergehenden Ansprüche, wobei das isolierende Material Keramikmaterial oder Harz oder eine Kombination davon ist.
  6. Unterwasser-Sicherungsvorrichtung nach einem der vorhergehenden Ansprüche, wobei der mittlere Abschnitt (104, 204) eine Standardsicherung (404) ist, die für einen Betrieb unter Oberflächenbedingungen bestimmt ist.
  7. Unterwasser-Sicherungsvorrichtung nach einem der vorhergehenden Ansprüche, wobei die äußere Hülle (101, 201) eine im Wesentlichen rohrförmige Form aufweist und wobei die erste und die zweite metallisierte Durchführung (105, 106, 205, 206) an entgegengesetzten Enden der im Wesentlichen rohrförmigen Hülle (101, 201) angeordnet sind.
  8. Unterwasser-Sicherungsvorrichtung nach einem der vorhergehenden Ansprüche, wobei der Hohlraum (107, 207) mit Sand gefüllt ist.
  9. Unterwasser-Sicherungsvorrichtung nach einem der vorhergehenden Ansprüche, wobei der mittlere Abschnitt (104, 204) des Sicherungsdrahtes ein erstes Material umfasst und der erste und/oder der zweite Endabschnitt (102, 103, 202, 203) des Sicherungsdrahtes ein zweites Material umfassen, wobei das erste und das zweite Material verschieden sind.
  10. Unterwasser-Sicherungsvorrichtung nach Anspruch 9, wobei das erste und das zweite Material jeweils wenigstens eines aus der Gruppe umfassen, welche umfasst:
    - Zink,
    - Kupfer,
    - Silber und
    - Aluminium.
  11. Unterwasservorrichtung (10), welche umfasst:
    - ein Gehäuse (13) und
    - eine elektrische Schaltungsanordnung (11), die innerhalb des Gehäuses (13) angeordnet ist,
    wobei die elektrische Schaltungsanordnung (11) eine Unterwasser-Sicherungsvorrichtung (100, 200) nach einem der vorhergehenden Ansprüche umfasst.
  12. Unterwasservorrichtung nach Anspruch 11, wobei das Gehäuse (13) mit einem Fluid (17) gefüllt ist und einen Volumen/Druck-Kompensator (14) umfasst, welcher den Druck im Gehäuse (13) mit dem Druck ausgleicht, der in einer Umgebung des Gehäuses (13) herrscht.
EP17153917.4A 2017-01-31 2017-01-31 Unterseesicherungsvorrichtung Active EP3355335B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP17153917.4A EP3355335B1 (de) 2017-01-31 2017-01-31 Unterseesicherungsvorrichtung
PCT/EP2017/080187 WO2018141433A1 (en) 2017-01-31 2017-11-23 Subsea fuse device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17153917.4A EP3355335B1 (de) 2017-01-31 2017-01-31 Unterseesicherungsvorrichtung

Publications (2)

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EP3355335A1 EP3355335A1 (de) 2018-08-01
EP3355335B1 true EP3355335B1 (de) 2019-03-13

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WO (1) WO2018141433A1 (de)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3584817B1 (de) 2018-06-19 2020-12-23 Siemens Aktiengesellschaft Unterseesicherungsvorrichtung

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1562984A (en) * 1921-04-04 1925-11-24 Thomas E Murray Incased fuse
US5103203A (en) * 1991-03-15 1992-04-07 Combined Technologies Inc. Oil immersible current limiting fuse
EP2495746A1 (de) * 2011-03-02 2012-09-05 Siemens Aktiengesellschaft Unterwasserschmelzsicherungsanordnung
EP2565899A1 (de) * 2011-08-30 2013-03-06 Siemens Aktiengesellschaft Druckfestes Gehäuse für eine elektrische Vorrichtung
GB2525631B (en) * 2014-04-30 2017-05-03 Subsea 7 Ltd Subsea replaceable fuse assembly

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

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WO2018141433A1 (en) 2018-08-09

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