WO2012146837A1 - Installation comportant au moins un accumulateur hydropneumatique a entretien automatise - Google Patents
Installation comportant au moins un accumulateur hydropneumatique a entretien automatise Download PDFInfo
- Publication number
- WO2012146837A1 WO2012146837A1 PCT/FR2012/050477 FR2012050477W WO2012146837A1 WO 2012146837 A1 WO2012146837 A1 WO 2012146837A1 FR 2012050477 W FR2012050477 W FR 2012050477W WO 2012146837 A1 WO2012146837 A1 WO 2012146837A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- gas
- valve
- reinjection
- installation according
- pressure
- Prior art date
Links
Classifications
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- 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
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
- F15B1/027—Installations or systems with accumulators having accumulator charging devices
- F15B1/033—Installations or systems with accumulators having accumulator charging devices with electrical control means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line 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
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
- F15B1/027—Installations or systems with accumulators having accumulator charging devices
-
- 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
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
- F15B1/04—Accumulators
- F15B1/08—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor
-
- 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
- F15B2201/00—Accumulators
- F15B2201/20—Accumulator cushioning means
- F15B2201/205—Accumulator cushioning means using gas
-
- 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
- F15B2201/00—Accumulators
- F15B2201/40—Constructional details of accumulators not otherwise provided for
- F15B2201/415—Gas ports
- F15B2201/4155—Gas ports having valve means
-
- 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
- F15B2201/00—Accumulators
- F15B2201/50—Monitoring, detection and testing means for accumulators
- F15B2201/51—Pressure detection
-
- Y—GENERAL 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/2931—Diverse fluid containing pressure systems
-
- Y—GENERAL 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/2931—Diverse fluid containing pressure systems
- Y10T137/3115—Gas pressure storage over or displacement of liquid
-
- Y—GENERAL 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/2931—Diverse fluid containing pressure systems
- Y10T137/3115—Gas pressure storage over or displacement of liquid
- Y10T137/3127—With gas maintenance or application
Definitions
- Installation comprising at least one hydropneumatic accumulator with automated maintenance
- the invention relates to any installation comprising one or more hydropneumatic accumulators and more particularly relates to an improvement for automatically maintaining the or each accumulator in an optimal operating state, throughout its duration of use.
- the invention applies in particular to any installation equipped with one or more hydropneumatic accumulators located in a limited access environment and / or dangerous and / or not tolerating frequent interventions because, for example, a factor of high running and / or prohibitive maintenance cost.
- a hydropneumatic accumulator consists of a rigid container in which two compartments are defined: a compartment filled with pressurized gas commonly called “gas capacity” and a compartment filled with liquid, commonly called “liquid capacity”.
- gas capacity a compartment filled with pressurized gas
- liquid capacity a compartment filled with liquid
- a flexible membrane separator constitutes a common deformable wall between the two compartments.
- the gas capacity includes a valve located at a corresponding end of the rigid container, through which a certain amount of gas under pressure can be injected and trapped. This charge of the gas capacity determines a certain operating range of the accumulator.
- the applications are numerous. Among these, we can mention the energy storage "anti-pulsation" to absorb peak pressure. It is also possible to mention braking assistance, particularly in a landing gear, or on the contrary energy recovery, for example in a truck where energy is recovered during a braking phase and restored during an acceleration recovery. .
- Another field of application more particularly concerned with the invention is that of wind turbines. Such accumulators are used to flag the wind turbine blades in the event of an emergency stop. In this case, the accumulators are installed in the rotating part of the wind turbine, that is to say in a particularly difficult place of access.
- the invention solves this problem by providing a possibility of automatic recharging of the gas capacity.
- the invention relates to an installation comprising at least one hydropneumatic accumulator comprising a liquid capacity and a preloaded gas capacity, filled with a gas under a pressure greater than a chosen minimum value, characterized in that it comprises means for successive readjustments of the load of said gas capacity when the pressure of said load falls below the chosen minimum value, comprising a pressurized gas source connected by a pneumatic circuit to a loading valve of said gas capacity, said pneumatic circuit comprising at least one two-position, normally-closed type, two-position feedback solenoid valve controlled by a unit for calculating successive gas reinjection cycles in said gas capacity, in that said calculation unit receives at least one signal representative of the hydraulic pressure prevailing in the liquid capacity or hydraulic power deli set by the latter and in that a control output of said computing unit controls the successive cycles of opening and closing of said feedback solenoid valve by generating successive cycles of readjustment of the load of said gas capacity each time that its pressure falls below said chosen minimum value.
- a pressure regulator controlling the pressure of the gas delivered by the source of pressurized gas
- an adjustable nozzle for the adjustment of the time of load
- a non-return valve Preferably, these elements are connected in series and in this order.
- a flowmeter may be inserted into the pneumatic circuit, for the determination of a quantity of reinjected gas during a reinjection cycle mentioned above.
- This flowmeter has a signal output connected to the computing unit, which is designed to determine the amount of gas reinjected from a continuous flow measurement.
- the computing unit comprises a triggering input capable of receiving a signal representative of a charge readjustment order of the gas capacitor.
- a pressure sensor for measuring the pressure in the gas capacity, the output of which is connected to a data input of said calculation unit, for the determination of said quantity of gas to be reinjected.
- the gas is reinjected during a reinjection cycle, until the pressure in the gas capacity again reaches a desired value.
- the installation can also be characterized in that it comprises a temperature sensor for measuring the gas temperature of said gas capacity, the output of which is connected to a data input of said calculation unit, for the determination of said quantity. of gas to be reinjected.
- the measurement of the gas temperature is used as a correction value to determine the value of the pressure in the gas capacity for which reinjection is stopped.
- the installation comprises several accumulators or groups of accumulators and corresponding reinjection valves.
- the pneumatic circuit is connected to all the reinjection valves and the calculation unit has respective control outputs connected to independently drive said reinjection valves.
- a re-injection cycle may concern, at a given moment, only one accumulator or groups of accumulators, despite a single source of pressurized gas and a common pneumatic circuit.
- such a group of accumulators associated with the same reinjection valve consists of several accumulators connected in parallel.
- the installation further comprises a purge valve of normally open type, connected to the or each aforementioned loading valve and controlled by the closure means by the calculation means during a reinjection cycle mentioned above.
- this purge valve may be unique. It is, in this case connected to the aforementioned pneumatic circuit, directly upstream of the or reinjection valves. It is also commanded to close during a reinjection cycle.
- said source of pressurized gas comprises at least one compressed gas reservoir.
- This tank will preferably be placed in an accessible place to be easily replaced.
- the gas pressure in such a tank is greater than the maximum precharge pressure of the hydropneumatic accumulator (s).
- FIG. 1 is a block diagram of a first possible embodiment of an installation according to the invention
- FIG. 2 is a similar block diagram illustrating a variant
- FIG. 3 is a block diagram illustrating another embodiment of the installation
- FIG. 4 is a partial block diagram illustrating a possibility of extension of the installation.
- Figure 5 is a view similar to Figure 4, illustrating a variant.
- the installation shown in FIG. 1 comprises at least one hydropneumatic accumulator 11 comprising, typically, a rigid container 12 in which a gas capacity 13 and a liquid capacity 14 are defined. These two capacities, of variable volumes, are share the internal volume of the container 12. They comprise a common wall constituted by a flexible diaphragm separator 15. A predetermined quantity of gas under pressure is trapped in the gas capacity. A loading valve 17 communicates with the gas capacity, and allows the loading of a desired amount of gas therein. The gas is therefore in principle trapped in said gas capacity.
- the liquid capacity includes an outlet 19 connected to a hydraulic circuit for use, not shown.
- the installation comprises means for readjusting the load 20 of the gas capacity, connected to the loading valve 17.
- These readjustment means comprise a source of pressurized gas 22 constituted in this case by a pressurized gas reservoir, a circuit pneumatic 24 including a valve reinjection 26 of the type normally closed, controlled and a calculation unit 27 of a gas reinjection cycle in the gas capacity.
- Said computing unit 27 is provided for controlling the valve 26.
- the valve 26 is a solenoid valve whose electrical signal input 26a is connected to a specific control output 29 of the computing unit 27 .
- the output of the pressurized gas source 22 is equipped with an isolation valve 23 with manual actuation.
- the pneumatic circuit 24 extends between this valve 23 and the loading valve 17. It comprises, in series starting from the isolation valve 23, an expander 31, an adjustable nozzle 33 and a non-return valve 35.
- pressure regulator makes it possible to control the pressure of the gas delivered by the source of gas under pressure, the nozzle makes it possible to regulate the charging time.
- the source of pressurized gas 22 is here a simple reservoir of compressed gas, easily interchangeable.
- the outlet of the nonreturn valve 35 is connected to the pneumatic inlet of the valve 26.
- the pneumatic output of the valve 26 is connected to the loading valve 17.
- a safety valve 39 for venting, is connected at a point between the isolation valve 23 and the expander 31.
- a purge valve 41 advantageously a solenoid valve, of the normally open type is connected to the or each said loading valve 17 and controlled by the calculation unit 27 to close.
- the solenoid valve 41 is connected to be controlled by a exit 30 of the computing unit. It is controlled when closing at the beginning of a reinjection cycle.
- the computing unit 27 conventionally comprises a microprocessor and electronic circuits capable of generating electrical control signals for the solenoid valves 26 and 41, in particular and for receiving and processing the signals coming from different sensors, in order to allow the elaboration of the electrical control signals. This calculation unit will not be described in detail.
- the implementation of the calculation unit 27 triggers a gas reinjection cycle in the gas capacity. To do this, it is driven, for the start of this cycle and in the example of Figure 1, by a signal representative of the hydraulic pressure that prevails in the liquid capacity 14.
- an input of cycle trigger 47 is connected to the output of a pressure sensor 48 of the liquid capacity.
- the computing unit 27 transmits control signals to the outputs 30 and 29 to successively close the solenoid valve 41 and open the solenoid valve 26, respectively.
- the calculation unit 27 comprises in particular a compensation circuit 45 making it possible to adapt the quantity of reinjected gas as a function of the pressure and the temperature of the gas (compared to reference values) contained in said gas capacity, by means of pressure sensors 50 and 52 of temperature, placed in contact with the gas of said gas capacity, downstream of the valve 17. More specifically, the pressure sensor 50 measures the pressure in the gas capacity and its output is connected to a data input 50a of said computing unit 27 for determining the amount of gas to be reinjected. Similarly, the temperature sensor 52 makes it possible to measure the temperature of the gas in the gas capacity and its output is connected to a data input 52a of the said calculation unit for determining the quantity of gas to be reinjected.
- the compensation circuit 45 contains in memory the normal variations of the pressure P as a function of the temperature T in the gas capacity, assuming it to its predetermined nominal load according to the characteristics of the installation where the accumulator 11 is commissioned. In Figure 1, these variations are shown schematically by a line D. If the input 47 receives a triggering order of the reinjection cycle developed from the sensor 48, the compensation circuit 45 receives from the sensors 50 and 52 information representative of the actual pressure and temperature in the gas capacity. This makes it possible to determine a point (P, T) offset from the line D, which results in the determination of a value ⁇ , to be corrected. This value is loaded into an appropriate software which performs a test 55 on the value of ⁇ , to develop control signals which are addressed to the outputs 29 and 30.
- the valve 26 is kept open and the valve 41 is kept closed, which allows the continuous recharging of the gas capacity by gas from the source of gas under pressure.
- the safety valve 39 remains closed. This gas flows under the control of the regulator 31 and the adjustable nozzle 33. It passes through the non-return valve (35) and the solenoid valve 26 to recharge the gas capacity 13 by forcing the valve 17 until the value ⁇ determined by the calculation unit 27 (more precisely the compensation circuit 45) is reduced to 0.
- This variant is characterized in that it comprises a flowmeter 57 inserted in the pneumatic circuit.
- the flowmeter comprises a signal output connected to the calculation unit for the determination of a quantity of reinjected gas during a reinjection cycle mentioned above.
- the calculation unit 27 is generally similar to that of FIG. 1, but the compensation circuit is designed to deduce, in particular from the value ⁇ acquired as above, a value Q 0 representative of the quantity of gas to be reinjected in order to recharge the capacity. 13.
- the amount of reinjected gas Q is determined by the computing unit 27 from the flow rate information applied to a data input 57a connected to the signal output 58 of the flowmeter 57.
- Software It performs a test 55A which generates control signals available at the outputs 29 and 30. This test compares the value Q of the quantity of gas introduced from the beginning of the reinjection cycle into the gas capacity (value deduced from the flow meter 57) at the Q 0 value determined by the compensation circuit 45.
- the triggering order of the reinjection cycle is, as in the previous example, developed from a pressure measurement (sensor 48) of the liquid capacity.
- the essential elements of the installation of FIG. 2 are found, notably the flowmeter 57 inserted into the pneumatic circuit 24 by means of which the calculation unit can determine in real time the quantity of gas Q re-injected into the gas capacity at any point in the reinjection cycle.
- This cycle begins and ends with the actuation of the solenoid valves 26, 41 as in the two previous embodiments.
- the cycle is not triggered by the detection of insufficient pressure in the liquid capacity but by the dedicated electronic assembly 60 engaged by a signal representative of the hydraulic power delivered to the equipment to which the hydropneumatic accumulator 11 is connected.
- the design of this electronic assembly depends on the type of equipment concerned and is within the reach of the skilled person. If the measured hydraulic power reaches a certain low threshold, the dedicated electronics assembly 60 generates a cycle trigger signal applied to the trigger input 47 which drives the computing unit 27.
- the type of tripping control described in FIG. 3 can also be adapted to the installation of FIG. 1, without a flowmeter, by using the circuit 45 and the sensors 50, 52, that is to say in FIG. controlling the reinjected gas by canceling the ⁇ value.
- FIG 4 there is shown an installation provided with several accumulators 11 or lia groups of accumulators associated with corresponding reinjection valves.
- a group of accumulators 11a, associated with the same reinjection valve 26 consists of several accumulators connected in parallel.
- the pneumatic circuit 24 is connected to all the reinjection valves 26 while the computation unit (not shown) has respective control outputs connected to independently drive said reinjection valves.
- each accumulator 11 or accumulator group 11a is associated with a specific purge valve 41 of the normally open type.
- Each valve is directly connected to each loading valve 17 and is controlled by the computing unit during a reinjection cycle corresponding to the relevant accumulator or battery pack.
- Each valve 41 is driven by a specific output of the computing unit.
- the purge valve 41 is unique. This normally open valve is connected to the pneumatic circuit 24 directly upstream of the or each reinjection valve. According to the example, it is connected downstream of the non-return valve 35. It is controlled to close during a reinjection cycle.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
Description
Claims
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA2829069A CA2829069C (fr) | 2011-03-09 | 2012-03-07 | Installation comportant au moins un accumulateur hydropneumatique a entretien automatise |
US14/003,691 US10302255B2 (en) | 2011-03-09 | 2012-03-07 | Equipment comprising at least one hydropneumatic accumulator with automated maintenance |
JP2013557159A JP5990546B2 (ja) | 2011-03-09 | 2012-03-07 | 自動メンテナンス機能を有する液気圧併用のアキュムレータを少なくとも一つ備える設備 |
CN201280012374.4A CN103415708B (zh) | 2011-03-09 | 2012-03-07 | 包括具有自动维护的至少一个液压气动蓄能器的设备 |
EP12713206.6A EP2683948B1 (fr) | 2011-03-09 | 2012-03-07 | Installation comportant au moins un accumulateur hydropneumatique a entretien automatise |
BR112013022937A BR112013022937A2 (pt) | 2011-03-09 | 2012-03-07 | instalação compreendendo pelo menos um acumulador hidropneumático |
DK12713206.6T DK2683948T3 (da) | 2011-03-09 | 2012-03-07 | Indretning med mindst én hydropneumatisk akkumulator med automatisk vedligeholdelse |
KR1020137026698A KR101986259B1 (ko) | 2011-03-09 | 2012-03-07 | 적어도 하나의 자동 유지보수식 수공식 어큐뮬레이터를 포함하는 장비 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1151934 | 2011-03-09 | ||
FR1151934A FR2972504B1 (fr) | 2011-03-09 | 2011-03-09 | Installation comportant au moins un accumulateur hydropneumatique a entretien automatise |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2012146837A1 true WO2012146837A1 (fr) | 2012-11-01 |
Family
ID=45937408
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2012/050477 WO2012146837A1 (fr) | 2011-03-09 | 2012-03-07 | Installation comportant au moins un accumulateur hydropneumatique a entretien automatise |
Country Status (10)
Country | Link |
---|---|
US (1) | US10302255B2 (fr) |
EP (1) | EP2683948B1 (fr) |
JP (1) | JP5990546B2 (fr) |
KR (1) | KR101986259B1 (fr) |
CN (1) | CN103415708B (fr) |
BR (1) | BR112013022937A2 (fr) |
CA (1) | CA2829069C (fr) |
DK (1) | DK2683948T3 (fr) |
FR (1) | FR2972504B1 (fr) |
WO (1) | WO2012146837A1 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2015152173A (ja) * | 2014-02-17 | 2015-08-24 | スペシャル・スプリングス・ソシエタ・ア・レスポンサビリタ・リミタータSpecial Springs S.R.L. | ガスシリンダアクチュエータを加圧制御する装置 |
WO2020173637A1 (fr) * | 2019-02-28 | 2020-09-03 | Hydac Technology Gmbh | Procédé pour la détermination d'une pression d'accumulateur ainsi que dispositif correspondant |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3023330B1 (fr) * | 2014-07-01 | 2017-11-24 | Technoboost | Accumulateur de pression hydraulique equipe d’un systeme de securite externe comportant une canalisation |
DE102017007628A1 (de) * | 2017-08-12 | 2019-02-14 | Hydac Technology Gmbh | Sicherheitssystem |
CN113915175A (zh) * | 2021-08-26 | 2022-01-11 | 北京宇航系统工程研究所 | 一种低温蓄压器自动充气系统 |
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2011
- 2011-03-09 FR FR1151934A patent/FR2972504B1/fr active Active
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2012
- 2012-03-07 CA CA2829069A patent/CA2829069C/fr active Active
- 2012-03-07 JP JP2013557159A patent/JP5990546B2/ja active Active
- 2012-03-07 US US14/003,691 patent/US10302255B2/en active Active
- 2012-03-07 WO PCT/FR2012/050477 patent/WO2012146837A1/fr active Application Filing
- 2012-03-07 DK DK12713206.6T patent/DK2683948T3/da active
- 2012-03-07 BR BR112013022937A patent/BR112013022937A2/pt not_active Application Discontinuation
- 2012-03-07 KR KR1020137026698A patent/KR101986259B1/ko active IP Right Grant
- 2012-03-07 EP EP12713206.6A patent/EP2683948B1/fr active Active
- 2012-03-07 CN CN201280012374.4A patent/CN103415708B/zh active Active
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JP2015152173A (ja) * | 2014-02-17 | 2015-08-24 | スペシャル・スプリングス・ソシエタ・ア・レスポンサビリタ・リミタータSpecial Springs S.R.L. | ガスシリンダアクチュエータを加圧制御する装置 |
WO2020173637A1 (fr) * | 2019-02-28 | 2020-09-03 | Hydac Technology Gmbh | Procédé pour la détermination d'une pression d'accumulateur ainsi que dispositif correspondant |
Also Published As
Publication number | Publication date |
---|---|
DK2683948T3 (da) | 2019-07-29 |
CN103415708B (zh) | 2017-02-15 |
US10302255B2 (en) | 2019-05-28 |
EP2683948B1 (fr) | 2019-05-08 |
CA2829069C (fr) | 2020-03-31 |
BR112013022937A2 (pt) | 2016-12-06 |
JP2014510884A (ja) | 2014-05-01 |
KR101986259B1 (ko) | 2019-06-07 |
FR2972504A1 (fr) | 2012-09-14 |
FR2972504B1 (fr) | 2014-06-27 |
CA2829069A1 (fr) | 2012-11-01 |
EP2683948A1 (fr) | 2014-01-15 |
KR20140034162A (ko) | 2014-03-19 |
CN103415708A (zh) | 2013-11-27 |
US20140102551A1 (en) | 2014-04-17 |
JP5990546B2 (ja) | 2016-09-14 |
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