EP3006735B1 - Dispositif sous-marin pour fournir un fluide sous pression - Google Patents

Dispositif sous-marin pour fournir un fluide sous pression Download PDF

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Publication number
EP3006735B1
EP3006735B1 EP14188500.4A EP14188500A EP3006735B1 EP 3006735 B1 EP3006735 B1 EP 3006735B1 EP 14188500 A EP14188500 A EP 14188500A EP 3006735 B1 EP3006735 B1 EP 3006735B1
Authority
EP
European Patent Office
Prior art keywords
fluid
subsea
opening
piston
accumulator
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.)
Not-in-force
Application number
EP14188500.4A
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German (de)
English (en)
Other versions
EP3006735A1 (fr
Inventor
Ove Boe
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
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Siemens AG
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Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to EP14188500.4A priority Critical patent/EP3006735B1/fr
Priority to US14/870,781 priority patent/US20160102660A1/en
Publication of EP3006735A1 publication Critical patent/EP3006735A1/fr
Application granted granted Critical
Publication of EP3006735B1 publication Critical patent/EP3006735B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • F04B17/04—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B23/00—Pumping installations or systems

Definitions

  • the present invention relates to a subsea device configured to provide a pressurized fluid for a fluid activated subsea consumer, especially to a subsea device which may be operated and arranged in a subsea environment.
  • hydraulic power is frequently used to operate actuators and other moving parts.
  • a major obstacle in deep water is the extreme high pressure experienced by the equipment at these depths. Therefore, hydraulic power is typically supplied through pipelines in an umbilical from a top side facility. Providing the hydraulic power from the top side facility may increase cost and may decrease reliability due to the transmission via pipelines.
  • a continuous fluid volume requirement of the hydraulic consumers is limited. For example, opening or closing a valve in certain circumstances may require only a very low constant flow.
  • US 2005/0178557 A1 relates to an electric hydraulic power unit comprising the features defined in the preamble of present claim 1.
  • US 2006/0102357 A1 relates to a further electric hydraulic power unit comprising the features defined in the preamble of present claim 1.
  • WO 2008/048109 A1 relates to a monitoring system for accumulator banks including at least two pressure accumulators.
  • the accumulator bank is coupled to a device and adapted to provide a pressurized fluid into the device at pressure reductions in the device.
  • the monitoring system comprises at least one sensor for detecting a chosen parameter in the accumulator bank at chosen intervals of time, a recording unit for recording the sampled measured parameters, and a storage device for storing predetermined characteristic information related to the pressure development in the accumulator bank during pressure reductions at the device and representing different numbers of active accumulators in the accumulator bank.
  • a calculation means compares the recorded measured parameters with the stored characteristic information and determines from this comparison the number of active accumulators in the accumulator bank.
  • WO 2006/100518 A1 relates to an apparatus for compensating for subsea pressure in a hydraulic circuit.
  • the apparatus comprises a body defining a chamber having a piston slidably arranged therein.
  • US 3,738,775 relates to a constant pressure liquid supply system.
  • the system includes a tank having an inlet, a pump which has an inlet for receiving fluid and an outlet which is connected to the tank inlet, switch means connected to the pump for turning the pump on and off, and means responsive to fluid pressure within the tank and cooperable with the switch means for turning the pump on when the tank fluid pressure falls below a predetermined level and turning the pump off when the tank fluid pressure attains the predetermined level.
  • a bladder for containing liquid may be monitored in the tank and may have an outlet which extends therefrom for discharging the liquid when squeezed down by fluid pressure within the tank.
  • this object is achieved by a subsea device configured to provide a pressurized fluid for a fluid activated consumer as defined in claim 1, a subsea system as defined in claim 7, and a subsea station as defined in claim 8.
  • a subsea device configured to provide a pressurized fluid for a fluid activated consumer as defined in claim 1, a subsea system as defined in claim 7, and a subsea station as defined in claim 8.
  • a subsea device configured to provide a pressurized fluid for a fluid activated consumer in a subsea environment.
  • the subsea device comprises a pump body having an opening, for example a cylindrical opening, and a fluid accumulator for storing pressurized fluid.
  • the fluid may comprise for example hydraulic oil.
  • the fluid accumulator is in fluid communication with the opening of the pump body, for example via a hydraulic line.
  • a piston is arranged within the opening and movable back and forth in a longitudinal direction of the opening. An outer peripheral surface of the piston may fit into an inner peripheral surface of the opening. Therefore a movement of the piston in at least one of the back and forth directions pressurizes a fluid arranged in the opening.
  • the subsea device comprises furthermore a solenoid which is coupled to the piston such that the solenoid moves the piston in at least one of the back and forth directions upon an actuation of the solenoid.
  • the solenoid may be actuated by electrical power supplied to the solenoid.
  • the fluid volume requirement of hydraulic consumers may be very limited and thus a very low fluid flow may be required only.
  • An average low fluid flow can be provided by the piston powered by the solenoid.
  • the fluid accumulator provides a standby source of hydraulic power for a short-term increased fluid flow and for maintaining a constant fluid flow. Therefore, simple components and a few reliable moving parts may provide a sufficient hydraulic power source for subsea applications.
  • the components are robust and may be arranged in harsh subsea environments such that cost intensive pipelines for providing hydraulic power from a top side facility can be avoided.
  • the subsea device comprises a level indicator which is arranged at the fluid accumulator.
  • the level indicator provides a level signal indicating a charging level of the fluid accumulator.
  • the subsea device may comprise a control circuit, for example an electronic control, which is coupled to the level indicator of the fluid accumulator and to the solenoid.
  • the control circuit may control the solenoid in response to the level signal received from the level indicator.
  • the level signal may indicate when the fluid accumulator is completely charged with pressurized fluid. Therefore, the control circuit may actuate the solenoid to charge the fluid accumulator until the level indicator signals that the fluid accumulator is completely charged.
  • a reliable stand-by source of hydraulic power may be provided.
  • the subsea device comprises a check valve arranged between the opening and the fluid accumulator.
  • the check valve may be arranged for example in a hydraulic line with a flow direction of the check valve from the opening to the fluid accumulator. Therefore, the check valve allows a fluid flow from the opening to the fluid accumulator and prohibits a fluid flow from the fluid accumulator to the opening.
  • a further check valve may be arranged in a further hydraulic line coupling the opening to a hydraulic fluid reservoir. The further check valve is arranged such that it allows a fluid flow from the hydraulic fluid reservoir to the opening and prohibits a fluid flow from the opening to the hydraulic fluid reservoir.
  • the subsea device comprises furthermore a housing for accommodating at least the pump body, the fluid accumulator, the piston and the fluid to be pressurized.
  • the fluid to be pressurized surrounds at least partially some or all of the above-listed components.
  • the components of the subsea device may be contained within one fluid-filled compartment and the fluid may be used as the hydraulic medium.
  • a special fluid reservoir and a volume compensation may be omitted.
  • a subsea system configured to provide a pressurized fluid for a fluid activated consumer in a subsea environment.
  • the subsea system comprises at least two subsea devices as defined above. Each subsea device comprises a corresponding output, at which the pressurized fluid is provided.
  • the subsea system comprises furthermore a valve arrangement which is coupled to the outputs of the subsea devices in parallel.
  • a subsea station which comprises a fluid activated consumer arranged subsea and the subsea device defined above.
  • the subsea device is coupled to the fluid activated consumer, for example a hydraulically operated equipment, and supplies the pressurized fluid to the fluid activated consumer.
  • the subsea device is arranged subsea, in particular near to the fluid activated consumer. Therefore, short hydraulic lines are required only for providing hydraulic power to the fluid activated consumer. Thus, robustness and reliability may be increased.
  • Fig. 1 shows schematically a subsea device 10 for providing a pressurized fluid in a subsea environment.
  • the subsea device 10 comprises a housing 11 accommodating a pump body 12, a first check valve 13, a second check valve 14, a hydraulic line 15, a fluid accumulator 16, a control circuit 17 and an output 33.
  • the subsea device 10 may comprise more components which are not shown in Fig. 1 for clarity reasons, for example a back flow hydraulic line, an electrical power supply line, an electrical control line and so on.
  • the pump body 12 comprises an opening 18, for example a cylindrical bore, in which from one side a first end of a piston 19 is inserted.
  • the piston 19 is arranged within the cylindrical opening 18 such that it is movable back and forth in a longitudinal direction of the cylindrical opening, i.e., to the left and to the right in Fig. 1 as shown by arrows 29 and 30, respectively.
  • the other side of the opening 18 is connected to the hydraulic line 15, in which the check valves 13 and 14 are arranged and which couples the opening 18 to the fluid accumulator 16 and to the output 33.
  • a solenoid 20 is arranged which is coupled to the control circuit 17.
  • the solenoid 20 When the solenoid 20 is powered by the control circuit 17, it may move the piston 19 in the back or in the forth directions 29 and 30, i.e., it may move the piston 19 to the left or to the right in Fig. 1 .
  • the piston 19 may be biased by a spring (not shown) into the left direction 29 and may be forced by a magnetic force from the solenoid 20 into the right direction 30.
  • the piston 19 is moved selectively to the left or to the right.
  • the second end of the piston 19 surrounded by the solenoid 20 may comprise a permanent magnet.
  • the piston 19 may be forced into the left direction 29 or into the right direction 30 without the need of a spring.
  • the outer surface of the piston 19 and the inner surface of the cylindrical opening 18 may be sealed against each other such that a fluid in the hollow space of the opening 18 is not allowed to flow along the surface of the piston 19 in the left direction 29.
  • the hydraulic line 15 couples the second check valve 14 to a reservoir 21.
  • the reservoir 21 supplies a large amount of fluid, for example hydraulic oil.
  • the housing 11 itself may represent the reservoir such that all components within the housing 11 are surrounded by the fluid or hydraulic oil.
  • the second check valve 14 is arranged such that it allows a fluid flow from the reservoir 21 to the opening 18, but inhibits a back flow from the opening 18 to the reservoir 21.
  • the hydraulic line 15 couples furthermore the opening 18 to the fluid accumulator 16 via the first check valve 13.
  • the first check valve 13 is arranged such that it allows a fluid flow from the opening 18 to the fluid accumulator 16, but inhibits a back flow from the fluid accumulator to the opening 18.
  • the hydraulic line 15 provides furthermore a fluid communication from the fluid accumulator 16 to the output 33.
  • the fluid accumulator may comprise an opening, for example a cylindrical opening or a cylindrical bore, in which a piston 22 is arranged.
  • the piston 22 is biased with a spring 23.
  • a bar 24 arranged at the piston 22 may be used in combination with a level indicator or sensor 25 to determine the current position of the piston 22 within the cylindrical bore.
  • a corresponding level signal indicating a charging level of the fluid accumulator 16 may be transmitted from the sensor 25 to the control circuit 17 via an electrical line as shown in Fig. 1 .
  • a further hydraulic line 26 may be provided for transmitting pressurized fluid from the subsea device 10 to a subsea consumer, which may be activated by the pressurized fluid.
  • the subsea consumer may comprise for example a hydraulic activated valve or a hydraulic activated motor.
  • a control valve 27 may be provided for controlling a flow of the pressurized fluid in the hydraulic line 26.
  • the control valve 27 may comprise a solenoid operated valve controlled by a further control unit 28.
  • a fluid to be pressurized is provided in the reservoir 21.
  • the fluid may comprise for example hydraulic oil.
  • the piston 19 is operated by the control circuit 17 and the solenoid 20 to move back and forth in directions 29 and 30.
  • hydraulic fluid flows from the reservoir 21 through the check valve 14 into the opening 18.
  • the piston 19 is moved in the opposite direction 30, the fluid is pressurized and flows, due to the check valves 13 and 14, from the opening 18 through the check valve 13 in the direction of the fluid accumulator 16 and the output 33.
  • the consumer connected at the hydraulic line 26 does not consume all the pressurized fluid provided, the excess is flowing into the fluid accumulator 16, thus charging the fluid accumulator 16.
  • a current charging state of the fluid accumulator 16 is monitored or sensed with the level indicator 25. When the fluid accumulator 16 is charged completely or up to a predefined level, the control circuit 17 stops actuating the piston 19 and the consumer receives pressurized fluid from the fluid accumulator 16. Thus, a constant flow of pressurized fluid can be provided to the consumer.
  • Fig. 2 shows a subsea station 40 comprising a system 41 for providing a pressurized fluid to a fluid activated consumer 42.
  • the system 41 comprises three pump subsea devices (PD1, PD2 and PD3) 43-45 and a valve arrangement 46.
  • the subsea station 40 is arranged subsea, i.e., the subsea station 40 may be arranged in a depth of several hundred to several thousand meters, for example in a depth of 3000 meters below sea surface 47.
  • the subsea station 40 may be for example a part of a subsea oil production or a subsea energy transmission.
  • Each of the pump subsea devices 43-45 may comprise for example a subsea device 10 as described above in connection with Fig.
  • the outputs 33 of the pump subsea devices 43-45 are coupled to the valve arrangement 46 such that the pump subsea devices 43-45 are arranged in parallel.
  • An output of the valve arrangement 46 is coupled to the consumer 42.
  • the multiple pump subsea devices 43-45 connected in parallel by means of for example check valves or solenoid valves may provide an increased volume flow of the pressurized fluid to the consumer 42. Furthermore, a reliability of the system 41 may be increased. If the sum of the fluid streams provided by the pump subsea devices 43-45 is larger than required by the subsea consumer 42, even in case of a failure of one or more of the pump subsea devices 43-45 a sufficient hydraulic power may be provided to the subsea consumer 42.

Claims (8)

  1. Dispositif sous-marin configuré pour fournir un fluide pressurisé pour un consommateur à activation par fluide, le dispositif sous-marin (10) comprenant :
    - un corps de pompe (12) comprenant une ouverture (18),
    - un accumulateur de fluide (16) destiné à stocker du fluide pressurisé, qui est en communication fluidique avec l'ouverture (18),
    - un piston (19) agencé à l'intérieur de l'ouverture (18) et pouvant effectuer un mouvement d'allées (29) et venues (30) dans une direction longitudinale de l'ouverture (18), et
    - un solénoïde (20) couplé au piston (19) et configuré pour déplacer le piston (19) dans au moins l'une des directions d'allées (29) et venues (30), dans lequel un mouvement du piston (19) dans au moins l'une des directions d'allées (29) et venues (30) pressurise le fluide dans l'ouverture (18), caractérisé par
    - un logement (11) abritant au moins le corps de pompe (12), l'accumulateur de fluide (16), le piston (19) et le fluide à pressuriser, dans lequel le fluide à pressuriser entoure au moins partiellement au moins l'un parmi le corps de pompe (12), l'accumulateur de fluide (16) et le piston (19).
  2. Dispositif sous-marin selon la revendication 1, comprenant en outre :
    - un indicateur de niveau (25) au niveau de l'accumulateur de fluide (16), l'indicateur de niveau (25) fournissant un signal de niveau indiquant un niveau de charge de l'accumulateur de fluide (16).
  3. Dispositif sous-marin selon la revendication 2, comprenant en outre :
    - un circuit de commande (17) couplé à l'indicateur de niveau (25) de l'accumulateur de fluide (16) et au solénoïde (20), le circuit de commande (17) étant configuré pour commander le solénoïde (20) en réponse au signal de niveau reçu en provenance de l'indicateur de niveau (25).
  4. Dispositif sous-marin selon la revendication 2 ou 3, dans lequel l'accumulateur de fluide (16) comprend un piston pressurisé par ressort (22) agencé à l'intérieur d'une ouverture de l'accumulateur de fluide (16), dans lequel le signal de niveau de l'indicateur de niveau (25) indique une position du piston pressurisé par ressort (22) à l'intérieur de l'ouverture de l'accumulateur de fluide (16).
  5. Dispositif sous-marin selon l'une quelconque des revendications précédentes, comprenant en outre :
    - un clapet antiretour (13) agencé dans la communication fluidique entre l'ouverture (18) du corps de pompe (12) et l'accumulateur de fluide (16) de telle sorte que le clapet antiretour (13) permet un écoulement de fluide de l'ouverture (18) à l'accumulateur de fluide (16) et interdit un écoulement de fluide de l'accumulateur de fluide (16) à l'ouverture (18).
  6. Dispositif sous-marin selon l'une quelconque des revendications précédentes, comprenant en outre :
    - un clapet antiretour supplémentaire (14) agencé dans une communication fluidique supplémentaire couplant l'ouverture (18) à un réservoir de fluide hydraulique (21), le clapet antiretour supplémentaire étant agencé de telle sorte que le clapet antiretour supplémentaire (14) permet un écoulement de fluide du réservoir de fluide hydraulique (21) à l'ouverture (18) et interdit un écoulement de fluide de l'ouverture (18) au réservoir de fluide hydraulique (21).
  7. Système sous-marin configuré pour fournir un fluide pressurisé pour un consommateur à activation par fluide dans un environnement sous-marin, le système sous-marin (41) comprenant :
    - au moins deux dispositifs sous-marins (10 ; 43-45) selon l'une quelconque des revendications précédentes, dans lequel chaque dispositif sous-marin parmi les au moins deux dispositifs sous-marins fournit un fluide pressurisé au niveau d'une sortie correspondante (33) du dispositif sous-marin (10), et
    - un agencement de clapet (46) couplant les sorties (33) des au moins deux dispositifs sous-marins en parallèle.
  8. Station sous-marine, comprenant :
    - un consommateur à activation par fluide (42) agencé sous la mer, et
    - un dispositif sous-marin (10 ; 43-45) selon l'une quelconque des revendications 1-6, dans laquelle le dispositif sous-marin (10 ; 43-45) est couplé au consommateur à activation par fluide (42) pour approvisionner en fluide pressurisé le consommateur à activation par fluide (42), dans laquelle le dispositif sous-marin (10 ; 43-45) est agencé sous la mer.
EP14188500.4A 2014-10-10 2014-10-10 Dispositif sous-marin pour fournir un fluide sous pression Not-in-force EP3006735B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP14188500.4A EP3006735B1 (fr) 2014-10-10 2014-10-10 Dispositif sous-marin pour fournir un fluide sous pression
US14/870,781 US20160102660A1 (en) 2014-10-10 2015-09-30 Subsea device for providing a pressurized fluid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14188500.4A EP3006735B1 (fr) 2014-10-10 2014-10-10 Dispositif sous-marin pour fournir un fluide sous pression

Publications (2)

Publication Number Publication Date
EP3006735A1 EP3006735A1 (fr) 2016-04-13
EP3006735B1 true EP3006735B1 (fr) 2017-08-30

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Application Number Title Priority Date Filing Date
EP14188500.4A Not-in-force EP3006735B1 (fr) 2014-10-10 2014-10-10 Dispositif sous-marin pour fournir un fluide sous pression

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US (1) US20160102660A1 (fr)
EP (1) EP3006735B1 (fr)

Families Citing this family (1)

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Publication number Priority date Publication date Assignee Title
DE102019131171A1 (de) * 2019-11-19 2021-05-20 Voith Patent Gmbh Elektrohydraulischer Aktuator für den Einsatz unter Wasser und elektrisch angetriebene Pumpe für einen solchen elektrohydraulischen Aktuator

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US3572032A (en) * 1968-07-18 1971-03-23 William M Terry Immersible electrohydraulic failsafe valve operator
US3738775A (en) * 1971-10-07 1973-06-12 Us Navy Constant pressure liquid supply system
EP1509693B1 (fr) * 2002-05-18 2006-11-29 Robert Bosch GmbH Soupape d'injection de carburant pour moteurs a combustion interne
US7137450B2 (en) * 2004-02-18 2006-11-21 Fmc Technologies, Inc. Electric-hydraulic power unit
US7159662B2 (en) * 2004-02-18 2007-01-09 Fmc Technologies, Inc. System for controlling a hydraulic actuator, and methods of using same
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US7424917B2 (en) * 2005-03-23 2008-09-16 Varco I/P, Inc. Subsea pressure compensation system
NO326874B1 (no) * 2006-10-20 2009-03-09 Aker Subsea As System og fremgangsmåte for overvåking av undersjøiske akkumulatorbanker
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SG157340A1 (en) * 2008-05-28 2009-12-29 Vetco Gray Inc Subsea electric actuator using linear motor
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Publication number Publication date
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