WO2015150478A2 - Volume sensing accumulator - Google Patents

Volume sensing accumulator Download PDF

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Publication number
WO2015150478A2
WO2015150478A2 PCT/EP2015/057228 EP2015057228W WO2015150478A2 WO 2015150478 A2 WO2015150478 A2 WO 2015150478A2 EP 2015057228 W EP2015057228 W EP 2015057228W WO 2015150478 A2 WO2015150478 A2 WO 2015150478A2
Authority
WO
WIPO (PCT)
Prior art keywords
hydraulic accumulator
displacement
internal divider
sensing device
sensing
Prior art date
Application number
PCT/EP2015/057228
Other languages
French (fr)
Other versions
WO2015150478A3 (en
Inventor
Chad SANKEY
Julian James Jefferis
Peter John Davey
Robert John Gough
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 WO2015150478A2 publication Critical patent/WO2015150478A2/en
Publication of WO2015150478A3 publication Critical patent/WO2015150478A3/en

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B1/00Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/02Installations or systems with accumulators
    • F15B1/04Accumulators
    • F15B1/08Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B1/00Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/02Installations or systems with accumulators
    • F15B1/04Accumulators
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B1/00Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/02Installations or systems with accumulators
    • F15B1/04Accumulators
    • F15B1/08Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor
    • F15B1/10Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor with flexible separating means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B1/00Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/02Installations or systems with accumulators
    • F15B1/04Accumulators
    • F15B1/08Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor
    • F15B1/24Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor with rigid separating means, e.g. pistons
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2201/00Accumulators
    • F15B2201/30Accumulator separating means
    • F15B2201/31Accumulator separating means having rigid separating means, e.g. pistons
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2201/00Accumulators
    • F15B2201/30Accumulator separating means
    • F15B2201/315Accumulator separating means having flexible separating means
    • F15B2201/3152Accumulator separating means having flexible separating means the flexible separating means being bladders
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2201/00Accumulators
    • F15B2201/50Monitoring, detection and testing means for accumulators
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2201/00Accumulators
    • F15B2201/50Monitoring, detection and testing means for accumulators
    • F15B2201/505Testing of accumulators, e.g. for testing tightness
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2201/00Accumulators
    • F15B2201/50Monitoring, detection and testing means for accumulators
    • F15B2201/51Pressure detection
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2201/00Accumulators
    • F15B2201/50Monitoring, detection and testing means for accumulators
    • F15B2201/515Position detection for separating means
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/16Mechanical energy storage, e.g. flywheels or pressurised fluids

Definitions

  • EP2653731 in which a hydraulic accumulator located in an underwater fluid extraction well facility is associated with at least one means responsive to the weight of the accumulator to provide an indication dependent on the weight of the accumulator.
  • At least one sensing device could be mounted with its sensing direction parallel to the direction of displacement of the internal divider.
  • the at least one sensing device mounted parallel to the direction of displacement of the internal divider could comprise an ultrasound sensor or an electromagnetic radiation reflection sensor.
  • At least one magnetic, electromagnetic radiation or radiological source could be attached to the internal divider.
  • a sensing device 4 is mounted on a side wall of the hydraulic accumulator 2.
  • the sensing device 4 has a sensing direction which is perpendicular to the direction of displacement of the piston 3 to detect the piston 3 as it passes across the sensing device 4.
  • the cross-sectional area of the cylinder of the hydraulic accumulator 2 is known (and, in this case, constant)
  • the amount of the displacement is proportional to the volume of gas within the hydraulic accumulator 2.
  • a single sensing device could be used to measure displacement, for example at the centre of the hydraulic accumulator 2, and a computer model could estimate the shape of the bladder from this measurement.
  • a plurality of sensing devices it is preferable to use a plurality of sensing devices to provide a more accurate indication of shape.
  • Fig. 6 schematically shows a hydraulic accumulator assembly according to a sixth embodiment of the invention.
  • the hydraulic accumulator 2 contains an internal divider comprising a piston 3.
  • a stiff but flexible cable 13 e.g. a Bowden cable
  • the magnet 14 moves in response to the movement of the piston 3, and a sensor 15 measures the movement of the magnet 14 to provide an indication of the movement of the piston 3.
  • Fig. 7 is a schematic diagram of an underwater fluid extraction well facility.
  • a pair of hydraulic accumulator assemblies 16, 17 according to the invention is disposed in an underwater fluid extraction well facility on the sea bed.
  • the sensing devices of the hydraulic accumulator assemblies are connected to a communications bus 18.
  • the communications bus 18 is connected to a subsea control module (SCM) 19 which houses a subsea electronics module (SEM) 20.
  • SCM subsea control module
  • SEM subsea electronics module
  • the sensing devices in the above embodiments are all external to the hydraulic accumulator, however this is not intended to preclude the use of sensors internal to the hydraulic cylinder itself, for example, mounted on the inside of the cylinder wall, or located within the internal divider itself.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)

Abstract

A hydraulic accumulator assembly (1) in which a hydraulic accumulator (2) is associated with at least one sensing device (4, 7, 11 or 12) configured to provide an indication of the displacement of an internal divider (3 or 10) within the accumulator to provide an indication of the volume of gas within the hydraulic accumulator.

Description

VOLUME SENSING ACCUMULATOR
Field of the Invention
The present invention relates to hydraulic accumulators, for example a hydraulic accumulator in an underwater (e.g. subsea) fluid extraction well facility. Background to the Invention
Prior art subsea hydraulic accumulators only have means to measure the pressure in the accumulators, and have to assume that the gas remaining in the accumulator is the same as when it was initially pre-charged. The hydraulic accumulator assembly of the present invention can be used to verify if that assumption is valid or if the accumulator has leaked gas, indicating that it cannot be relied upon and should be replaced. This may reduce instances of failure to supply sufficient hydraulic pressure to the subsea equipment to which it is connected.
FR2585086 discloses a hydraulic accumulator assembly in which a hydraulic accumulator is associated with at least one means responsive to the weight of the accumulator to provide an indication dependent on the weight of the accumulator.
As further prior art there may be mentioned EP2653731, in which a hydraulic accumulator located in an underwater fluid extraction well facility is associated with at least one means responsive to the weight of the accumulator to provide an indication dependent on the weight of the accumulator. Summary of the Invention
In accordance with a first aspect of the invention there is provided a hydraulic accumulator assembly in which a hydraulic accumulator is associated with at least one sensing device configured to provide an indication of the displacement of an internal divider within the accumulator to provide an indication of the volume of gas within the hydraulic accumulator. In accordance with a second aspect of the invention there is provided a method of providing an indication of the volume of gas within a hydraulic accumulator in a hydraulic accumulator assembly, comprising the steps of: a) mounting at least one sensor on the hydraulic accumulator; b) providing an indication of the displacement of an internal divider within the hydraulic accumulator with the at least one sensor; and c) using the measured displacement to provide an indication of the volume of gas within the hydraulic accumulator.
At least one sensing device could be mounted with its sensing direction perpendicular to the direction of displacement of the internal divider.
At least one sensing device could be mounted with its sensing direction parallel to the direction of displacement of the internal divider. In this case, the at least one sensing device mounted parallel to the direction of displacement of the internal divider could comprise an ultrasound sensor or an electromagnetic radiation reflection sensor. At least one magnetic, electromagnetic radiation or radiological source could be attached to the internal divider.
The assembly could further comprise a pressure and temperature sensor. In this case, displacement, pressure and temperature values could be used to calculate the quantity of energy stored in the hydraulic accumulator. The internal divider could comprise a piston, a bladder, or a diaphragm.
The hydraulic accumulator could be a hydraulic accumulator in an underwater fluid extraction well facility.
Brief Description of the Drawings
Fig. 1 is a schematic diagram of a first embodiment of this invention; Fig. 2 is a schematic diagram of a second embodiment of this invention; Fig. 3 is a schematic diagram of a third embodiment of this invention;
Fig. 4 is a schematic diagram of a fourth embodiment of this invention;
Fig. 5 is a schematic diagram of a fifth embodiment of this invention;
Fig. 6 is a schematic diagram of a sixth embodiment of this invention; and Fig. 7 is a schematic diagram of an underwater fluid extraction well facility comprising hydraulic accumulator assemblies according to the invention.
Fig. 1 schematically shows a hydraulic accumulator assembly 1 according to a first embodiment of the invention, comprising a cylindrical hydraulic accumulator 2 connected to a hydraulic circuit 5. Hydraulic fluid may enter and exit the hydraulic accumulator 2 through a T-junction. As such fluid moves in and out of the hydraulic accumulator 2, an internal divider, i.e. a piston 3, which separates the hydraulic fluid from a pressurised gas, is displaced in response. For the purpose of consistency, the amount of displacement is defined as being zero when the piston 3 is at the top of the cylinder of the hydraulic accumulator 2 as shown in Figs. 1-4, the amount of displacement increasing as the piston 3 moves downward.
A sensing device 4 is mounted on a side wall of the hydraulic accumulator 2. The sensing device 4 has a sensing direction which is perpendicular to the direction of displacement of the piston 3 to detect the piston 3 as it passes across the sensing device 4. As the cross-sectional area of the cylinder of the hydraulic accumulator 2 is known (and, in this case, constant), the amount of the displacement is proportional to the volume of gas within the hydraulic accumulator 2.
With a sensing device 4 mounted on the side wall of the hydraulic accumulator 2, it is also possible to perform an alternative method whereby the composition of the contents of the hydraulic accumulator are sensed through the side wall. When the sensing device 4 senses a change from liquid to gas (or vice versa), it provides an indication that the piston 3 has passed in front of the sensing device 4 at that point. As a further alternative embodiment (not shown), the sensing device 4 may comprise a transmitter on the side wall of the hydraulic accumulator 2 and a corresponding receiver located diametrically on the opposite side of the hydraulic accumulator 2. A link can be established between them, e.g. via electromagnetic radiation, which is readily transmitted through the medium of liquid or gas, but which is interrupted by the piston 3. An indication of the piston's displacement can be provided at the point at which the link is interrupted.
The sensing device 4 is connected to a communication bus 6. Through the communication bus 6, the sensing device 4 can communicate with other sensing devices on other hydraulic accumulators in an underwater fluid extraction field, and other components of an underwater fluid extraction well facility, for example a subsea electronics module in a subsea control module. As subsea electronics modules can be monitored from a topside control centre, usually via an umbilical, this allows the volume of gas within the hydraulic accumulator 2 to be monitored from the surface. Although only one sensing device is shown in Fig. 1, more sensors may be used in practice.
Fig. 2 schematically shows a hydraulic accumulator assembly according to a second embodiment of the invention. Like reference numerals have been retained where appropriate. In this embodiment, a sensing device 7 has been mounted on the top of a hydraulic accumulator 2. The sensing device 7 has a sensing direction which is parallel to the direction of displacement of a piston 3, and the sensing device 7 monitors the extent to which the piston 3 moves towards, or away from, the sensing device 7. In this embodiment, the sensor may comprise an ultrasound sensing device or an electromagnetic radiation reflection sensor. Again, while only one sensing device 7 is shown, more sensing devices may be used in practice. Also in this embodiment, the sensing device 7 may be sensitive to the substance reflecting the ultrasound / electromagnetic radiation. This can be used to give an indication that the accumulator is leaking, e.g. if the reflecting substance is fluid then the accumulator is leaking. Fig. 3 schematically shows a hydraulic accumulator assembly according to a third embodiment of the invention. Again, like reference numerals have been retained where appropriate. In this embodiment, pair of sensing devices 4, 7 is mounted on the outside of a hydraulic accumulator 2. A first sensing device 4 is mounted to have a sensing direction which is perpendicular to the direction of displacement of a piston 3, and a second sensing device 7 is mounted to have a sensing direction which is parallel to the direction of displacement of the piston 3 within the hydraulic accumulator 2. Both sensing devices 4, 7 are connected to a communications bus 6. While only one perpendicular sensing device 4 and one parallel sensing device 6 are shown, a plurality of each type of sensing device may be used in practice.
Fig. 4 schematically shows a hydraulic accumulator assembly according to a fourth embodiment of the invention. Again, like reference numerals have been retained where appropriate. This embodiment is similar to that shown in Fig. 3, however a marker 8 has been attached to the piston 3 to increase its visibility to the sensing devices 4, 7. The marker 8 may comprise, for example, a magnetic, electromagnetic radiation or radiological source. Although only one has been shown, a plurality of markers may be used to increase the accuracy of the displacement sensing.
Also shown in Fig. 4 is a pressure and temperature sensor 9 attached to the hydraulic circuit 5. Values of pressure and temperature measured by the sensor 9 may be combined with the measured piston displacement value to calculate the energy stored within the hydraulic accumulator 2. The stored energy is particularly important information for hydraulic accumulators in underwater fluid extraction well facilities, as the stored energy must be kept above a minimum threshold to ensure that safety critical systems may be operated in case of an emergency requiring shutdown of the well.
Fig. 5 schematically shows a hydraulic accumulator assembly according to a fifth embodiment of the invention. Again, like reference numerals have been retained where appropriate. In this embodiment, an internal divider of the hydraulic accumulator 2 comprises a bladder 10 (this embodiment could also operate with an internal divider comprising a diaphragm). A pair of sensing devices 11, 12 on the top of the accumulator 2 is used to measure the displacement of the bladder 10 at the centre of the hydraulic accumulator 2, and at a point offset from the centre. These two measured values provide an indication of the volume of gas within the hydraulic accumulator 2 by indicating the size and shape of the bladder. As an alternative embodiment, a single sensing device could be used to measure displacement, for example at the centre of the hydraulic accumulator 2, and a computer model could estimate the shape of the bladder from this measurement. However, it is preferable to use a plurality of sensing devices to provide a more accurate indication of shape.
Fig. 6 schematically shows a hydraulic accumulator assembly according to a sixth embodiment of the invention. Again, like reference numerals have been retained where appropriate. In this embodiment, the hydraulic accumulator 2 contains an internal divider comprising a piston 3. A stiff but flexible cable 13 (e.g. a Bowden cable) is attached to the piston at one end, and is attached to a magnet 14 at the opposite end. The magnet 14 moves in response to the movement of the piston 3, and a sensor 15 measures the movement of the magnet 14 to provide an indication of the movement of the piston 3.
Fig. 7 is a schematic diagram of an underwater fluid extraction well facility. A pair of hydraulic accumulator assemblies 16, 17 according to the invention is disposed in an underwater fluid extraction well facility on the sea bed. The sensing devices of the hydraulic accumulator assemblies are connected to a communications bus 18. The communications bus 18 is connected to a subsea control module (SCM) 19 which houses a subsea electronics module (SEM) 20. The SEM is in communication with a topside control centre via an umbilical 21. This allows the volume of gas in each respective hydraulic accumulator assembly 16, 17 to be monitored from the surface. Advantages provided by the invention
An advantage of the hydraulic accumulator assembly provided is that it can be used to detect whether or not the accumulator has leaked gas, indicating that it cannot be relied upon and should be replaced. This may reduce instances of failure to supply sufficient hydraulic pressure to the subsea equipment to which it is connected. Various alternatives and modifications within the scope of the invention will be apparent to those skilled in the art. For example, while the above embodiments have been described with reference to sensing devices having a sensing direction, this is not intended to preclude the use of omnidirectional sensors, provided they are capable of producing an indication of the displacement of the internal divider. As another example, the sensing devices in the above embodiments are all external to the hydraulic accumulator, however this is not intended to preclude the use of sensors internal to the hydraulic cylinder itself, for example, mounted on the inside of the cylinder wall, or located within the internal divider itself.

Claims

CLAIMS:
1. A hydraulic accumulator assembly in which a hydraulic accumulator is associated with at least one sensing device configured to provide an indication of the displacement of an internal divider within the accumulator to provide an indication of the volume of gas within the hydraulic accumulator.
2. A hydraulic accumulator assembly according to claim 1, wherein at least one sensing device is mounted with its sensing direction perpendicular to the direction of displacement of the internal divider
3. A hydraulic accumulator assembly according to any preceding claim, wherein at least one sensing device is mounted with its sensing direction parallel to the direction of displacement of the internal divider.
4. A hydraulic accumulator assembly according to claim 3, wherein the at least one sensing device mounted with its sensing direction parallel to the direction of displacement of the internal divider comprises an ultrasound sensor or an electromagnetic radiation reflection sensor.
5. A hydraulic accumulator assembly according to any preceding claim, wherein at least one magnetic, electromagnetic radiation or radiological source is attached to the internal divider.
6. A hydraulic accumulator assembly according to any preceding claim, further comprising a pressure and temperature sensor.
7. A hydraulic accumulator assembly according to claim 6, wherein displacement, pressure and temperature values are used to calculate the quantity of energy stored in the hydraulic accumulator.
8. A hydraulic accumulator assembly according to any preceding claim, wherein the internal divider comprises a piston.
9. A hydraulic accumulator assembly according to any of claims 1 to 7, wherein the internal divider comprises a bladder.
10. A hydraulic accumulator assembly according to any of claims 1 to 7, wherein the internal divider comprises a diaphragm.
11. A hydraulic accumulator assembly according to any preceding claim comprising a hydraulic accumulator in an underwater fluid extraction well facility.
12. A method of providing an indication of the volume of gas within a hydraulic accumulator in a hydraulic accumulator assembly, comprising the steps of: a) mounting at least one sensing device on the hydraulic accumulator; b) providing an indication of the displacement of an internal divider within the hydraulic accumulator with the at least one sensing device; and c) using the indication of the displacement to provide an indication of the volume of gas within the hydraulic accumulator.
13. A method according to claim 12, wherein step a) comprises mounting at least one sensing device with its sensing direction perpendicular to the direction of displacement of the internal divider.
14. A method according to claim 12 or 13, wherein step a) comprises mounting at least one sensing device with its sensing direction parallel to the direction of displacement of the internal divider.
15. A method according to claim 14, wherein the at least one sensing device mounted with its sensing direction parallel to the direction of displacement of the piston comprises an ultrasound sensor or an electromagnetic radiation reflection sensor.
16. A method according to any of claims 12 to 15, further comprising the step of attaching at least one magnetic, electromagnetic radiation or radiological source to the internal divider.
17. A method according to any of claims 12 to 16, further comprising the step of including a pressure and temperature sensor in the hydraulic accumulator assembly.
18. A method according to claim 17, further comprising the step of using displacement, pressure and temperature values to calculate the quantity of energy stored in the hydraulic accumulator.
19. A method according to any of claims 12 to 18, wherein the internal divider comprises a piston.
20. A method according to any of claims 12 to 18, wherein the internal divider comprises a bladder.
21. A method according to any of claims 12 to 18, wherein the internal divider comprises a diaphragm.
22. A method according to any of claims 12 to 18 performed in an underwater fluid extraction well facility.
PCT/EP2015/057228 2014-04-03 2015-04-01 Volume sensing accumulator WO2015150478A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1406013.1A GB2524800A (en) 2014-04-03 2014-04-03 Volume sensing accumulator
GB1406013.1 2014-04-03

Publications (2)

Publication Number Publication Date
WO2015150478A2 true WO2015150478A2 (en) 2015-10-08
WO2015150478A3 WO2015150478A3 (en) 2016-02-18

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WO (1) WO2015150478A2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10240618B2 (en) 2015-06-03 2019-03-26 Hydril USA Distribution LLC Accumulator volume detector using an optical measurement
WO2022218665A1 (en) * 2021-04-17 2022-10-20 Hydac Technology Gmbh Hydraulic accumulator

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2209561B (en) * 1987-09-08 1991-11-13 Royal Ordnance Plc Remotely controllable hydraulic power source
DE19539551C2 (en) * 1995-10-12 1997-07-17 Siemens Ag Measuring system and method for detecting the position of a piston
JPH1072093A (en) * 1996-05-02 1998-03-17 Sayama Seisakusho:Kk Pressure tank
EP2175142B1 (en) * 2008-10-08 2013-01-02 Eaton SAS Accumulator piston position-measuring device
US8428832B2 (en) * 2008-12-23 2013-04-23 Caterpillar Inc. Method and apparatus for calculating payload weight
US8146417B2 (en) * 2009-06-03 2012-04-03 Control Products, Inc. Hydraulic accumulator with position sensor
DE102011007765A1 (en) * 2011-04-20 2012-10-25 Robert Bosch Gmbh Piston accumulator with device for determining the position of a displaceable in the piston accumulator separating element
GB2490771B (en) * 2011-04-26 2017-12-27 Water Powered Tech Limited Gas spring accumulator
DE102011090050A1 (en) * 2011-12-28 2013-07-04 Robert Bosch Gmbh Method for determining a position of a piston in a piston accumulator by means of inductive sensors and suitably designed piston accumulator
DE102012205363A1 (en) * 2012-04-02 2013-10-02 Marco Systemanalyse Und Entwicklung Gmbh Positioning device
NO20120965A1 (en) * 2012-08-28 2014-03-03 Sensorlink As Method and system for determining the position of a piston in a cylinder
NO20120980A1 (en) * 2012-08-31 2014-03-03 Aker Mh As Antenna assembly for piston accumulators

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10240618B2 (en) 2015-06-03 2019-03-26 Hydril USA Distribution LLC Accumulator volume detector using an optical measurement
WO2022218665A1 (en) * 2021-04-17 2022-10-20 Hydac Technology Gmbh Hydraulic accumulator

Also Published As

Publication number Publication date
WO2015150478A3 (en) 2016-02-18
GB2524800A (en) 2015-10-07
GB201406013D0 (en) 2014-05-21

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