WO2017009296A1 - Circuit hydraulique à sécurité intégrée - Google Patents

Circuit hydraulique à sécurité intégrée Download PDF

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Publication number
WO2017009296A1
WO2017009296A1 PCT/EP2016/066449 EP2016066449W WO2017009296A1 WO 2017009296 A1 WO2017009296 A1 WO 2017009296A1 EP 2016066449 W EP2016066449 W EP 2016066449W WO 2017009296 A1 WO2017009296 A1 WO 2017009296A1
Authority
WO
WIPO (PCT)
Prior art keywords
hydraulic
directional control
input
output
hydraulic circuit
Prior art date
Application number
PCT/EP2016/066449
Other languages
English (en)
Inventor
Stephane Simon
Original Assignee
Ge Oil & Gas Uk Limited
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ge Oil & Gas Uk Limited filed Critical Ge Oil & Gas Uk Limited
Publication of WO2017009296A1 publication Critical patent/WO2017009296A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
    • F15B19/005—Fault detection or monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
    • F15B20/004—Fluid pressure supply failure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
    • F15B20/008—Valve failure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/80—Other types of control related to particular problems or conditions
    • F15B2211/857—Monitoring of fluid pressure systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/80—Other types of control related to particular problems or conditions
    • F15B2211/86—Control during or prevention of abnormal conditions
    • F15B2211/862—Control during or prevention of abnormal conditions the abnormal condition being electric or electronic failure
    • F15B2211/8626—Electronic controller failure, e.g. software, EMV, electromagnetic interference
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/80—Other types of control related to particular problems or conditions
    • F15B2211/86—Control during or prevention of abnormal conditions
    • F15B2211/863—Control during or prevention of abnormal conditions the abnormal condition being a hydraulic or pneumatic failure
    • F15B2211/8636—Circuit failure, e.g. valve or hose failure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/80—Other types of control related to particular problems or conditions
    • F15B2211/87—Detection of failures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/80—Other types of control related to particular problems or conditions
    • F15B2211/875—Control measures for coping with failures
    • F15B2211/8752—Emergency operation mode, e.g. fail-safe operation mode
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/80—Other types of control related to particular problems or conditions
    • F15B2211/875—Control measures for coping with failures
    • F15B2211/8755—Emergency shut-down
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/80—Other types of control related to particular problems or conditions
    • F15B2211/875—Control measures for coping with failures
    • F15B2211/8757—Control measures for coping with failures using redundant components or assemblies

Definitions

  • This invention relates to hydraulic circuit and a method of supplying hydraulic fluid. In one embodiment, it relates to a method of supplying hydraulic fluid to an underwater hydrocarbon extraction facility.
  • Prior art hydraulic circuits make use of only a single directional control valve (DCV) between the input and output.
  • DCV directional control valve
  • SCMs subsea control modules
  • SIL safety integrity level
  • the present invention provides a hydraulic circuit wherein the energisation of two directional control valves (DCV) is required in order for a hydraulic output to be provided with hydraulic fluid. De-energisation of either of the two DCVs results in the venting of hydraulic fluid from the circuit, and so any tree valves supplied by the circuit will revert to their fail-safe positions, stopping the flow of production fluid in the tree and safely isolating the tree.
  • DCV is SIL2 capable, and so the added level of redundancy increases the hardware fault tolerance such that each SCM incorporating the circuit of the present invention is SIL3 capable on its own.
  • the present invention also makes use of two separate vent lines, and so the venting operation when both DCVs are de-energised is quicker than systems which use a single vent line.
  • hydraulic circuit of the present invention is particularly suitable for a subsea control module, it could be used anywhere in a subsea control system where isolation valves are important for safety and / protection of the environment.
  • a hydraulic circuit comprising a hydraulic input, a hydraulic output, a first directional control valve arranged between the hydraulic input and hydraulic output, and a second directional control valve arranged between the hydraulic input and hydraulic output in series with the first directional control valve, wherein the first directional control valve has a first position in which it inhibits the passage of hydraulic fluid from the hydraulic input to the hydraulic output and a second position in which it permits the passage of hydraulic fluid, the second directional control valve has a first position in which it inhibits the passage of hydraulic fluid from the hydraulic input to the hydraulic output and a second position in which it permits the passage of hydraulic fluid, and wherein the first and second directional control valves each require an energy input to be maintained in their respective second positions.
  • a method of supplying hydraulic fluid from a hydraulic input of a hydraulic circuit to a hydraulic output of the hydraulic circuit comprising the steps of: providing a first directional control valve arranged between the hydraulic input and hydraulic output; providing a second directional control valve arranged between the hydraulic input and hydraulic output in series with the first directional control valve, wherein the first directional control valve has a first position in which it inhibits the passage of hydraulic fluid from the hydraulic input to the hydraulic output and a second position in which it permits the passage of hydraulic fluid, the second directional control valve has a first position in which it inhibits the passage of hydraulic fluid from the hydraulic input to the hydraulic output and a second position in which it permits the passage of hydraulic fluid, and wherein passage of hydraulic fluid from the hydraulic input to the hydraulic output and a second position in which it permits the passage of hydraulic fluid, and wherein the first and second directional control valves each require an energy input to be maintained in their respective second positions; the first and second directional control valves each require an energy
  • the hydraulic circuit could further comprise a first vent line, wherein the first directional control valve causes hydraulic fluid from the hydraulic circuit to vent via the first vent line in its first position.
  • the hydraulic circuit could further comprise a second vent line, wherein the second directional control valve causes hydraulic fluid from the hydraulic circuit to vent via the second vent line in its first position.
  • the hydraulic circuit could comprise a return loop that runs from the hydraulic output to a point intermediate the first and second directional control valves. At least one of the first and second vent lines could include a flow meter.
  • the hydraulic circuit could form part of a control arrangement for an underwater hydrocarbon extraction facility.
  • the hydraulic circuit could be received within a subsea control module.
  • the hydraulic input could be a hydraulic line in an umbilical.
  • the hydraulic output could operate at least one Christmas tree valve.
  • Fig. 1 schematically shows a hydraulic circuit in accordance with a first embodiment of the present invention in a first configuration
  • Fig. 2 schematically shows the hydraulic circuit of Fig. 1 in a second configuration
  • Fig. 3 schematically shows the hydraulic circuit of Fig. 1 in a third configuration
  • Fig. 4 schematically the hydraulic circuit of Fig. 1 in a fourth configuration.
  • a hydraulic circuit 1 is schematically shown in Fig. 1.
  • the hydraulic circuit 1 runs from a hydraulic input A to a hydraulic output B.
  • the embodiment shown in Figs. 1-4 is for use in a subsea control module (not shown) of an underwater hydrocarbon extraction facility, and so the hydraulic input A is received from a hydraulic supply line in an umbilical cable which runs from a surface location to the sea bed.
  • the hydraulic output B leads to a plurality of valves in a Christmas tree at the wellhead of an underwater hydrocarbon well.
  • the hydraulic circuit 1 includes a first directional control valve (DCV) 2 and a second DCV 3 in series with the first DCV 2. Both DCVs 2, 3 are shown in their open positions in Fig. 1. As can be seen, in this position both DCVs 2, 3 permit the passage of hydraulic fluid from the hydraulic input A to the hydraulic output B.
  • DCV directional control valve
  • the DCVs 2, 3 are biased by a spring into their closed positions. This means that in order for the DCVs to be maintained in their respective open positions energy must be input.
  • the open position will be referred to as the energised position and the closed position as the de-energised position.
  • a DCV can become stuck in the open position without being energised due to a fault, e.g. jamming.
  • the hydraulic circuit 1 also includes a return loop 4. After the final branch off for tree valves at the hydraulic output B the hydraulic circuit loops back upon itself to a point in between the first DCV 2 and the second DCV 3.
  • the return loop 4 includes a check valve 5, which ensures that hydraulic fluid does not flow the wrong way around the return loop 4 (i.e. clockwise as pictured in Fig. 1) when hydraulic fluid is being provided from the hydraulic input A to the hydraulic output B.
  • Fig. 2 schematically shows the hydraulic circuit of Fig. 1 in a second configuration. Like reference numerals have been retained where appropriate.
  • the first DCV 2 has become de-energised (for example, due to an interruption in electrical power to the subsea control module (not shown) containing the hydraulic circuit 1). It has therefore moved from a second, energised position, shown in Fig. 1, to a first, de-energised position, shown in Fig. 2.
  • the first DCV 2 blocks the passage of hydraulic fluid from the hydraulic input A to the hydraulic output B. Additionally, it connects the return loop 4 to a vent line 6.
  • the vent line 6 runs from the hydraulic circuit 1 to the sea D.
  • the vent line 6 includes a flow meter 7. By monitoring the flow of fluid in the vent line it can be determined whether or not the first DCV 2 is performing as intended. If fluid is detected flowing in the vent line 6, the flow meter 7 may trigger an alarm for a topside well operator who can perform further investigation on the hydraulic circuit 1 and the DCVs 2, 3 to see if any repairs are required.
  • the vent line 6 also includes a pair of check valves 8, 9 which ensure that hydraulic fluid may only pass from the hydraulic circuit 1 to the sea D, and prevent the ingress of sea water to the hydraulic circuit 1.
  • FIG. 3 schematically shows the hydraulic circuit of Fig. 1 in a third configuration. Like reference numerals have been retained where appropriate.
  • the second DCV 3 has become de-energised (for example, due to an interruption in electrical power to the subsea control module (not shown) containing the hydraulic circuit 1). It has therefore moved from a second, energised position, shown in Fig. 1, to a first, de-energised position, shown in Fig. 3.
  • the second DCV 3 blocks the passage of hydraulic fluid from the hydraulic input A to the hydraulic output B. Additionally, it connects the hydraulic output B to a vent line 10.
  • the vent line 10 runs from the hydraulic circuit 1 to the sea E. As hydraulic fluid is being provided, via the first DCV 2 to the check valve 5, hydraulic fluid is prevented from passing anti-clockwise around the return loop 4. As a result, hydraulic fluid is vented from the hydraulic output B to the sea E via the vent line 10.
  • the vent line 10 includes a flow meter 11. By monitoring the flow of fluid in the vent line it can be determined whether or not the second DCV 3 is energised. If fluid is detected flowing in the vent line 10, the flow meter 1 1 may trigger an alarm for a topside well operator who can perform further investigation on the hydraulic circuit 1 and the DCVs 2, 3 to see if any repairs are required.
  • the vent line 10 also includes a pair of check valves 12, 13 which ensure that hydraulic fluid may only pass from the hydraulic circuit 1 to the sea E, and prevent the ingress of sea water to the hydraulic circuit 1.
  • Fig. 4 schematically shows the hydraulic circuit of Fig. 1 in a fourth configuration. Like reference numerals have been retained where appropriate.
  • the first and second DCVs 2, 3 have become de-energised (for example, due to an interruption in electrical power to the subsea control module (not shown) containing the hydraulic circuit 1). Therefore, they have both moved from their respective second positions, shown in Fig. 1, to their respective first positions, shown in Fig. 4.
  • the first DCV 2 blocks the passage of hydraulic fluid from the hydraulic input A. Additionally, the first DCV 2 connects the return loop 4 to the vent line 6. The second DCV 3 connects the hydraulic output B to the vent line 10. Hydraulic fluid in the return loop 4 may pass, via the check valve 5, to the vent line 6. Hydraulic fluid from the hydraulic output B may pass to the vent line 10. In both cases, hydraulic fluid from the hydraulic circuit 1 is vented to the sea D, E via the vent lines 6, 10. As can be seen from each of Figs.
  • vent line 6 While the above embodiment is shown with a flow meter in each vent line 6, 10, in practice only one of the vent lines could include a flow meter. Additionally, while it is typical to include a pair of check valves in each vent line, this could be reduced to a single check valve, or increased to more than two.
  • the invention is suitable for use with a hydraulic input received from an umbilical, as described above, and also suitable for use where the hydraulic input is received from a supply consolidated from multiple supply lines.
  • the invention provides an improvement in safety when compared to prior art hydraulic circuits. Circuits using only a single DCV have a single point of failure, whereas the present invention includes a redundant DCV, which increases the safety integrity level rating of the whole circuit, and subsea assets including such a circuit.
  • prior art circuits include only a single vent line.
  • the provision of a second vent line decreases venting time, and can allow a tree at a subsea well to be shut down more quickly than those including only a singly vent line.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

L'invention concerne un circuit hydraulique, qui comprend : une entrée hydraulique (A), une sortie hydraulique (B), une première vanne de commande directionnelle (12) disposée entre l'entrée hydraulique et la sortie hydraulique, et une seconde vanne de commande directionnelle disposée entre l'entrée hydraulique et la sortie hydraulique en série avec la première valve de commande directionnelle, la première vanne de commande directionnelle ayant une première position dans laquelle elle empêche le passage de fluide hydraulique à partir de l'entrée hydraulique jusqu'à la sortie hydraulique et une seconde position dans laquelle elle permet le passage de fluide hydraulique, la seconde vanne de commande directionnelle ayant une première position dans laquelle elle empêche le passage de fluide hydraulique à partir de l'entrée hydraulique jusqu'à la sortie hydraulique et une seconde position dans laquelle elle permet le passage de fluide hydraulique, et les première et seconde vannes de commande directionnelles nécessitant chacune qu'une entrée d'énergie soit maintenue dans leurs secondes positions respectives.
PCT/EP2016/066449 2015-07-14 2016-07-11 Circuit hydraulique à sécurité intégrée WO2017009296A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1512266.6 2015-07-14
GB1512266.6A GB2540368A (en) 2015-07-14 2015-07-14 Fail-safe hydraulic circuit

Publications (1)

Publication Number Publication Date
WO2017009296A1 true WO2017009296A1 (fr) 2017-01-19

Family

ID=54013899

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2016/066449 WO2017009296A1 (fr) 2015-07-14 2016-07-11 Circuit hydraulique à sécurité intégrée

Country Status (2)

Country Link
GB (1) GB2540368A (fr)
WO (1) WO2017009296A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3429180A (en) * 1966-07-14 1969-02-25 Stal Laval Turbin Ab Overspeed monitor testing apparatus
DE4336306C1 (de) * 1993-10-25 1995-04-06 Sening Fa F A Einrichtung zur selbsttätigen Abschaltung eines pneumatisch gesteuerten Stellgliedes
GB2401164A (en) * 2003-04-29 2004-11-03 Abb Offshore Systems Ltd Pipeline protection system
US20060070673A1 (en) * 2004-10-06 2006-04-06 Festo Ag & Co. Soft start device for compressed air systems
US20140264106A1 (en) * 2011-11-02 2014-09-18 Smc Kabushiki Kaisha Flow rate control device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE112010002945B4 (de) * 2009-07-16 2024-09-19 Tiefenbach Control Systems Gmbh Hydraulische Schaltung für den Strebausbau
DE102009037120B4 (de) * 2009-08-11 2012-12-06 Festo Ag & Co. Kg Pneumatische Sicherheitsventileinrichtung
US8646473B2 (en) * 2011-02-28 2014-02-11 Deere & Company Electro-hydraulic sensor fail safe

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3429180A (en) * 1966-07-14 1969-02-25 Stal Laval Turbin Ab Overspeed monitor testing apparatus
DE4336306C1 (de) * 1993-10-25 1995-04-06 Sening Fa F A Einrichtung zur selbsttätigen Abschaltung eines pneumatisch gesteuerten Stellgliedes
GB2401164A (en) * 2003-04-29 2004-11-03 Abb Offshore Systems Ltd Pipeline protection system
US20060070673A1 (en) * 2004-10-06 2006-04-06 Festo Ag & Co. Soft start device for compressed air systems
US20140264106A1 (en) * 2011-11-02 2014-09-18 Smc Kabushiki Kaisha Flow rate control device

Also Published As

Publication number Publication date
GB2540368A (en) 2017-01-18
GB201512266D0 (en) 2015-08-19

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