EP2705257A1 - Dispositif de séparation de fluides, en particulier accumulateur hydraulique, ainsi que dispositif de mesure correspondant et procédé de mesure - Google Patents

Dispositif de séparation de fluides, en particulier accumulateur hydraulique, ainsi que dispositif de mesure correspondant et procédé de mesure

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Publication number
EP2705257A1
EP2705257A1 EP12715598.4A EP12715598A EP2705257A1 EP 2705257 A1 EP2705257 A1 EP 2705257A1 EP 12715598 A EP12715598 A EP 12715598A EP 2705257 A1 EP2705257 A1 EP 2705257A1
Authority
EP
European Patent Office
Prior art keywords
media
separating device
medium
sensor element
measuring
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.)
Granted
Application number
EP12715598.4A
Other languages
German (de)
English (en)
Other versions
EP2705257B1 (fr
Inventor
Matthias Leo JIRGAL
Horst Mannebach
Martin Groben
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.)
Hydac Technology GmbH
Original Assignee
Hydac Technology GmbH
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 Hydac Technology GmbH filed Critical Hydac Technology GmbH
Publication of EP2705257A1 publication Critical patent/EP2705257A1/fr
Application granted granted Critical
Publication of EP2705257B1 publication Critical patent/EP2705257B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • 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
    • F15B1/10—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor with flexible separating means
    • F15B1/16—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor with flexible separating means in the form of a tube
    • F15B1/165—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor with flexible separating means in the form of a tube in the form of a bladder
    • 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
    • F15B2201/30—Accumulator separating means
    • F15B2201/315—Accumulator separating means having flexible separating means
    • F15B2201/3152—Accumulator separating means having flexible separating means the flexible separating means being bladders
    • 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

Definitions

  • Medium separating device in particular hydraulic accumulator, including associated measuring device and measuring method.
  • the invention relates to a media separating device, in particular hydraulic accumulator, with a movable separating device for separating two media, which are accommodated in mutually different media spaces.
  • the invention further relates to a measuring device, also designed as a conversion or retrofit kit, as well as a measuring method for operating the measuring device in the media separating device.
  • Media and in particular fluid media in the context of the present invention are frequently used in drive technology, for example as lubricants and / or coolants or as pressure medium in hydraulic systems for the transmission of energy from a pressure medium source to a consumer.
  • Flowable media such as, for example, hydraulic oil or other pressurized fluids
  • media separating devices such as hydraulic accumulators, which fulfill a wide variety of tasks in hydraulic systems and, for example, energy storage, the provision of a fluid reserve, the emergency operation of consumers, the Pressure shock absorption and the like serve more.
  • a safe and proper operation of a hydraulic system requires in addition to the knowledge of physical operating parameters, such as pressure or flow rates, also a statement about whether the media separation device itself is trouble-free and reliable in operation.
  • DE 101 52 777 M describes a device for determining the quality of a medium, in particular a lubricating and / or coolant, with a plurality of sensors which emit an electrical output signal as a function of the respective sensor-specific input variable, wherein a sensor is a temperature sensor, the emits an output signal which essentially has only a dependence on the temperature of the medium and in particular is essentially independent of the quality of the medium. Another sensor emits an output signal that depends on both the quality of the medium and the temperature of the medium.
  • the sensors used are arranged on a common submerged in the respective medium to be examined substrate. The device configured in this way makes it possible to determine quality-determining parameters of fluid media independently of their actual temperature.
  • DE 10 2009 010 775 A1 describes a media separation device in the form of a hydraulic accumulator for receiving at least a partial volume of a pressurized fluid, the hydraulic accumulator having a housing with at least one connection point for connecting the hydraulic accumulator to a hydraulic device, such as a hydraulic circuit ,
  • a data memory is part of the hydraulic accumulator such that the data stored in the data memory can be read out electronically by means of a reading and / or writing device arranged outside the hydraulic accumulator.
  • the operating state of the hydraulic accumulator can therefore be reliably determined and monitored, preferably the monitoring can also be carried out automatically and controlled by a control device.
  • the separating device used is a bubble-like elastomeric membrane which separates two media spaces from one another within the storage housing, the one media space being used as a media space.
  • Dium preferably a compressible working gas, such as nitrogen gas, and the other media space is via the junction in the storage housing with hydraulic fluid as another pressurized medium, coming from the hydraulic device, filled.
  • a connection exchanging the working gas is to be established between the hydraulic accumulator and a measuring chamber, preferably having only a fraction of the container volume, which is connected via a pressure measuring device. device has.
  • the container For maintaining the desired pressure value beyond the connection between the hydraulic accumulator and a Vietnamese Schoichl l sensible is also made at least temporarily, the container at a pressure-actual value in the container, which is smaller than the desired pressure value the gas side refilled with gas.
  • the present invention seeks to provide a medium separating device, in particular in the form of a Hy- dro names, which is able to increase the reliability in a position to detect the incidents described above with little components cost and promptly and to report to the operator of the hydraulic system to which such hydraulic accumulators are regularly connected.
  • a measuring device by means of a measuring device a passage of at least one medium of a media space of the media separating device can be detected via the separating device into the other media space with the respective other medium.
  • the measuring device is advantageously effected that preferably in any type of media separation device at least the presence and optionally the type of a flowable medium is easily detected as soon as at least one of the two media unintentionally transferred from its traditional media space in the other media space.
  • the detection of fluid media can be used in particular as a prerequisite for the application of tion of safety functions or the functionally reliable control of operating procedures even in complex hydraulic systems.
  • the measuring device has at least one sensor element which can determine the media transfer via the separating device using a thermal and / or chemical and / or physical and / or optical and / or acoustic and / or electrical measuring method
  • the respective sensor element has such a connection to a detent with respect to at least one of the media spaces, that in each occupied position of the separating device, the sensor element with the transferred medium can be brought into contact.
  • the connection is made in a particularly advantageous embodiment of the media separation device via at least one flexible cable connection, wherein the cable is connected at its one end to the sensor element and is connected at its other end to the lock with parts of a storage enclosure that at least partially the media spaces limited.
  • the lock adjacent the end of the cable connection is connected to a connector part, which also preferably includes a transmitter with summarized.
  • a media separating device with a measuring device for detecting a transfer of at least one medium of a media space on the separating device in the other media space with the other medium medium is provided in a particularly compact and inexpensive manner.
  • the media separating device is formed in a preferred embodiment as a hydraulic accumulator in the manner of a bladder accumulator with a flexible bladder as a separator.
  • the respective sensor element is arranged on the formed as a gas side media space within the storage housing of the hydraulic accumulator.
  • Memory here forms the fluid side.
  • Other types of meter-dividing devices in particular in the form of hydraulic accumulators, such as bellows accumulators, diaphragm accumulators or piston accumulators, can in principle also be equipped with the measuring device according to the invention.
  • the measuring device designed as a conversion or retrofit kit in this case has at least one sensor element and a cable connection as well as evaluation electronics and preferably a separating device.
  • the measuring device designed as a conversion or retrofit kit has at least one sensor element and a cable connection as well as evaluation electronics and preferably a separating device.
  • a measuring method for operating the measuring device in a media separating device can advantageously be designed as a thermal measuring method, wherein the thermal conductivity of a medium in a media space of the media separating device is used for the evaluation, wherein provided by at least one heating element sensor element required for a defined increase in temperature of the medium Heating power is determined. Also, the temperature increase of the medium in the media room can be determined using a defined heat output.
  • it is preferable to use a transient heating wire method wherein a heating wire in the sensor element serves both as a heat source and as a temperature sensor.
  • a thin-film resistor on a ceramic substrate. The advantage here is the thin film resistor stood as a branch of a Wheatstone bridge switched. In this case, a supply voltage of the Wheatstone bridge can be pulsed and the rise in the bridge signal, ie the temperature rise, can be analyzed by the evaluation device.
  • the measuring method may also be advantageous to design the measuring method as an optical measuring method and in this case preferably to determine the luminescence of the medium in the respective media space.
  • an optical measuring method can also be used, with the attenuation and reflection properties of the respectively transferred medium being optically drawn for the evaluation.
  • an electrical measuring method is preferably the electrical conductivity in case of unwanted transfer of the one medium in the other medium.
  • This measuring method is particularly suitable if the media used in the medical separation device do not represent insulators. It may also be advantageous to use the dielectric properties of the respective medium for evaluation. It can also be advantageous to use a chemical measuring method, in which case in particular those measuring methods can be used in which at least part of the sensor element changes on contact with the respective other medium due to a chemical or physical reaction. Such changes may be a detectable swelling or even a dissolution of at least part of the sensor element. Color changes due to the chemical reaction of the medium with a part of the sensor element can also be utilized in order to detect the passage of a medium of one media space via the separating device into the other media space with the other medium.
  • FIG. 2 shows a schematic diagram of a thermal measuring method for operating a measuring device in a media separating device
  • FIG. 3 shows measurement results of a thermal conductivity measurement upon admission of a gaseous and a liquid medium to a sensor element of the measuring device
  • FIG. 4 is a schematic representation of an "acoustic measuring method" for operating a measuring device in a media separating device
  • FIG. 5 shows measurement results of the "acoustic measuring method" in the form of a course of two vibration characteristics, as obtained in the measuring operation with the device according to FIG. 4.
  • FIG. 1 shows a media separating device 1 in the form of a hydraulic accumulator 3 with a movable separating device 5 for separating two media 7, 9.
  • the media 7, 9 are housed in different media spaces 1 1, 13, wherein the movable separating device 5, the media spaces 1 1, 13 separated from each other media-tight.
  • a total of 1 5 designated measuring device serves to unwanted transfer of the medium 9 from the media room 13 via the separation unit direction 5 in the other media space 1 1 with the other medium 7 to detect.
  • the hydraulic accumulator 3 is designed in the manner of a bladder accumulator 35 and has a flexible bladder 37 made of elastomer material consisting of a separator 5.
  • the hydraulic accumulator 3 is used to receive a gaseous medium 7 in the form of a working gas, in particular in the form of nitrogen gas, and the inclusion of a further fluid medium 9; in the present case consisting of hydraulic fluid.
  • the pertinent media 7, 9 may well be under a pressure of up to 600 bar and more.
  • a sensor element 1 7 is arranged on the formed as a gas side 39 media space 1 1 within a storage housing 27 of the hydraulic accumulator 3, wherein the further media space 13 forms within the storage housing 27 already mentioned fluid side 41 of the hydraulic accumulator 3 ,
  • a poppet valve 44 which is inserted into the fluid connection opening 45 of the hydraulic accumulator 3, is used in the conventional design.
  • the hydraulic accumulator 3 can be connected to further hydraulic devices (not shown), for example in the form of a hydraulic circuit or the like, in a fluid-conducting manner.
  • connection opening 47 On the opposite side to the connection opening 45 and viewed in the direction of FIG. 1 above the storage housing 27, there is another connection opening 47 as a component of a screw-on component 49, via which the hydraulic accumulator 3 can be regularly filled or topped up with working gas on its gas side 39 .
  • the pertinent structure of hydraulic accumulators 3 is customary and already described in more detail in a prior application (DE 10 2006 004 120 A1) of the applicant and the rest freely available in a variety of embodiments on the market, so that at this point will not be discussed further .
  • a compressible foam may additionally or alternatively be used in the media space 1 1 as a medium or compressible packing, such as hollow foam body (not shown) and the like.
  • the introduced into the media room 1 1 medium 7 is formed from the pertinent materials. 1 already shows the situation of a so-called. Bubble break, in which unintentionally fluid 9 from the media room side 13 on the Gasmedien- space side 1 1 with the working gas 7 is changed, so that the fluid 9 has already accumulated at the bottom of the elastomer bladder , which is then detectable via the measuring device 1 5 with the sensor element 17, which will be explained in more detail below.
  • the measuring device 15 with the sensor element 1 7 serves to determine the unwanted described media transfer using a thermal and / or chemical see and / or physical and / or optical and / or acoustic and / or electrical measurement method.
  • the respective sensor element 1 7 has a connection 19 to the storage housing 27 via a lock 21, based on the media space 1 1 such that in each occupied position of the separator 5, the sensor element 1 7 with the transferred medium 9 is brought into contact.
  • the connection 1 9 is carried out via at least one flexible cable connection 23, wherein the respective cable 25 is electrically conductively connected at its one end 29 to the respective sensor element 1 7 and with its other end 30 on the lock 21 of the storage housing 27 with parts of an evaluation 33.
  • the fixed 21 adjacent end 30 of the cable connection 23 is insofar connected to a connector part 31, in which the transmitter 33 for the evaluation of measurement signals of the sensor element 1 7 is integrated.
  • the measuring device 15 is for use in a meter beenvorlegi 1 from at least the sensor element 1 7, the cable connection 23, the transmitter 33 and preferably the separator 5.
  • the retrofit kit described can already delivered hydraulic accumulator with the measuring device 1 5 together with evaluation 33 by simply exchanging the flexible storage bubble for a new storage bubble 37, which has integrated measurement and evaluation electronics.
  • the accumulator bladder may remain in the hydraulic accumulator 3, and to that extent only the measuring and evaluation electronics then have to be additionally introduced into the hydraulic accumulator 3.
  • the invention can also be used in piston accumulators, in which the separating device 5 is formed from a relative to the storage housing wall sealed Verfahrkolben, via the sealing systems also fluid from the fluid side to the gas side of the memory can unintentionally change, which also applies in the case that a seal of the piston completely failed.
  • the associated sensor element 1 7 can detect the unwanted crossing always at the lowest travel position of the piston.
  • the mentioned evaluation electronics 33 can furthermore have an output unit based on an electrical, optical, acoustic or haptic function and can be located directly on the hydraulic accumulator 3 within a type of plug-in part 31 according to the proposed solution according to FIG.
  • the evaluation electronics can also be arranged at a central location, for example within an overall control, which is then able to monitor several hydraulic accumulators within an overall hydraulic system for the unwanted transfer of media to indicate a failure to the plant operator.
  • FIG. 2 shows, by way of example only, a device for carrying out a thermal measuring method which can be carried out by the measuring device 15 designed for this purpose.
  • the measuring device 1 5 shown is able to detect the change in the thermal conductivity, in particular of the medium 7 located on the gas side 39 upon access of the medium 9.
  • the measuring device 15 has a resistance measuring bridge 51 formed in the manner of a Wheatstone bridge.
  • a bridge branch 53 designed as a heating resistor 55 sensor element 1 7 is arranged.
  • the resistance measuring bridge 51 is supplied with a pulsed operating voltage V. At the time of switching on the power supply, the resistance measuring bridge 51 is adjusted.
  • the bridge center differential voltage indicated in the shown display instrument 57 is "0."
  • the operating current in the heating resistor 55 changes its electrical resistance, thereby "displacing" the resistance measuring bridge 51.
  • the resulting differential voltage corresponds to the change in the electrical resistance of the heating resistor 55 and in turn the temperature increase.
  • the temperature increase is characteristic of the presence of a medium to be detected, here the medium 9, unintentionally transferred from the media space 13 into the media space 11 by failure of the elastomeric storage bladder 37.
  • the result of this measuring method is shown in FIG. 3 on the basis of the course of three measured values 59, 61, 63.
  • the measured value profiles show different temperature profiles applied to the heating resistor 55 over time.
  • the course of the measured value 59 with the smaller, absolute temperature increases shows an example of a measurement curve for oil.
  • the course of the measured values 61 and 63 show temperature increases for a working gas under a pressure of about 100 bar (measurement curve 61) and at ambient pressure (measurement curve 63). From this it becomes immediately apparent that significant differences in the temperature profile can be represented as a function of, in particular, an aggregate state (gaseous or liquid) of a respective medium.
  • a threshold is determined based on experiments, which allows the distinction of the media 7, 9 under all operating conditions of the media separation device 1, so that the unintentional media transfer is detectable.
  • the sensor element 1 1 7 has a vibration device 11 3, which under the action of a field 1 19 a field generating device 121 to
  • Vibrations is excited (see Fig.5).
  • the vibration behavior of the vibration device 1 13 changes in this case upon access of the flowable medium 9, wherein the change in the vibration behavior of the vibration device 1 13 is detected by the measuring device 1 15.
  • the Felderzeusei device 121 is formed by a magnetic device 122.
  • the measuring device 1 1 5 further comprises an electromagnetic coil 125, wherein the flow of the electromagnetic coil 125 and an electrical voltage in the coil 125 by vibrations of the of electromagnetic coil 125 excited sensor element 1 1 7 is influenced.
  • the field-generating device 121 is combined in a single component I, here in the form of the electromagnetic coil 125.
  • the sensor element 1 1 7 is connected to the transmitter 133 in the same manner as shown in Figure 1, via a flexible cable connection 123 as a connection 19.
  • the vibrator 1 13 is formed in the manner of a reed switch 131.
  • the reed switch 1 31 has two soft-magnetic, resilient metal tongues 1 34, 135, which lie opposite each other in the sensor element 1 1 7 and their ends 137, 139 axially overlap with a length measure a.
  • the ends 137, 139 of the metal tongues 134, 135 do not touch.
  • the metal tongues 134, 135 are enclosed by the magnetic device 122 formed as an electromagnetic coil 125 substantially over its entire length.
  • the magnetic field 1 19 results, which is shown only schematically in FIG. 4, with the metal tongues 134, 135 moving towards one another as the field strength increases.
  • the metal tongues 134, 135 may also be in contact here depending on the field strength of the magnetic field 1 19.
  • the metal tongues 1 34, 135 separate from each other and perform free vibrations.
  • the energization of the electromagnetic coil 125 can also be completely interrupted in order to initiate the oscillation process of the metal tongues 134, 1 35.
  • FIG. 5 shows, a vibration parameter 141 or even a plurality of vibration characteristics can be detected via the measuring device 15.
  • FIG. 5 shows two curves, wherein the upper curve in the viewing direction of Figure 5 shows a number of oscillations of the metal tongues 134, 1 35 above a predetermined threshold value of a vibration amplitude.
  • the lower curve in the viewing direction in FIG. 5 shows an example of the plot of the absolute oscillation amplitude of the metal tongues 134, 135 over time.
  • the waveforms according to the exemplary representation of Figure 5 concerning a spray oil WD-40 look different.
  • the courses of air, nitrogen gas, water, various hydraulic and lubricant oils, cold cleaners, such as alcohols or the like including fuels, such as diesel, clearly differ from each other.
  • the fluid transfer to the gas side of the hydraulic accumulator 3 can also be detected with this sensor element 11 7.
  • the sensor element 11 7 has an envelope 143, which is preferably formed from a mineral glass material, the envelope 143 completely enclosing the metal tongues 134, 135 radially and axially / while maintaining a minimum radial distance to the metal tongues 134 , 135, so as not to interfere with their excited vibration.
  • the pertinent envelope 143 has two openings 145 for the media access to the respective metal tongue 134, 135.
  • the energy for the operation of the sensor element 11 7 and the measuring device 1 15 is provided by an electrical energy source 147 in the form of a non-illustrated accumulator (battery) or preferably wired from the outside, wherein the sensor 1 17 in turn via a Cable connection 123 is connected as connection 1 to the transmitter 133.
  • an electrical energy source 147 in the form of a non-illustrated accumulator (battery) or preferably wired from the outside, wherein the sensor 1 17 in turn via a Cable connection 123 is connected as connection 1 to the transmitter 133.
  • optical methods can also be used.
  • so-called scattered light methods are well suited for the detection of fluid mists, if such a mist formation should occur on the gas side of the storage bladder 37.
  • Other optical evaluation options can be seen in the reflection or damping properties of different liquids compared to the passage of light through a sensor.
  • electrical measuring methods may be used which, in the sense indicated here, are preferably based on the measurement of dielectric or conductive properties of the medium. Both the dielectric constant and the conductivity make it possible to distinguish between liquids and gases.
  • measuring systems When using chemical measuring methods, measuring systems are to be used in which an element changes upon contact with the liquid to be detected due to a chemical or physical reaction. These changes can be in the case of intentional, unwanted media access:
  • a separation or dissolution of the sensor element can be detected, for example, with a spring-biased switch.
  • the switch is Preferably configured such that the change in volume opens or closes the switch and so far sends a signal to the measuring electronics 33.
  • the materials used for the sensor elements mentioned here are preferably plastics. Depending on the liquid to be detected, preference is given to selecting an unstable plastic which is appealing thereto.
  • a polymer changes its color as a sensor element due to its contact with the fluid, this can in turn be detected by suitable measuring methods.
  • the polymer is preferably designed as an absorbent fleece, the fleece can transport the fluid to the sensor element and a spatially distributed sensor and evaluation system results.
  • the mechanical oscillator (not shown) is located within the fluid and its vibration is correspondingly damped by the fluid.
  • the damping acting on the oscillator is proportional to the viscosity of the fluid.
  • Quartz crystals as in Quartz Crystal Microbalance (QCM), - Surface acoustic wave sensors (SAW),
  • QCM sensors, SAW sensors and micromechanical tuning forks can be used very well for determining the viscosity of hydraulic fluids, and this measurement technique is very well suited for the present task of detecting unwanted media transfer to hydraulic accumulators.
  • magneto-elastic films can be used, wherein the resonance frequency of a so-called magneto-elastic film changes with the environmental conditions, i. with the medium in which the film is located.
  • the film is preferably resonance-excited via a magnetic coil and the oscillation of the magneto-elastic film can be detected by means of a separate so-called pick-up coil or by the exciter coil itself. In this way, this effect can also be used to distinguish whether the sensor film is in oil or gas.
  • the pertinent mechanical oscillators can be assigned to the so-called physical measuring method in the sense of the present application subject.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)

Abstract

L'invention concerne un dispositif de séparation de fluides, en particulier un accumulateur hydraulique, ainsi qu'un dispositif de mesure correspondant et un procédé de mesure. Le dispositif de séparation de fluides (1) selon l'invention, en particulier l'accumulateur hydraulique (3) comprend un élément séparateur mobile (5) servant à séparer deux fluides (7, 9) qui sont reçus dans des chambres de fluide (11, 13) différentes. Le dispositif de séparation de fluides est caractérisé en ce qu'un passage involontaire d'au moins un fluide (7, 9) d'une chambre de fluide (11, 13) dans l'autre chambre de fluide (11, 13) contenant l'autre fluide (9, 7) par l'élément séparateur peut être détecté au moyen d'un dispositif de mesure (15, 115).
EP12715598.4A 2011-05-05 2012-04-07 Dispositif de séparation de media, en particulier accumulateur hydraulique, y compris appareil de mesure correspondant et méthode de mesure Active EP2705257B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011100532A DE102011100532A1 (de) 2011-05-05 2011-05-05 Medientrennvorrichtung, insbesondere Hydrospeicher einschließlich zugehöriger Messeinrichtung und Messverfahren
PCT/EP2012/001559 WO2012149994A1 (fr) 2011-05-05 2012-04-07 Dispositif de séparation de fluides, en particulier accumulateur hydraulique, ainsi que dispositif de mesure correspondant et procédé de mesure

Publications (2)

Publication Number Publication Date
EP2705257A1 true EP2705257A1 (fr) 2014-03-12
EP2705257B1 EP2705257B1 (fr) 2019-09-25

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EP12715598.4A Active EP2705257B1 (fr) 2011-05-05 2012-04-07 Dispositif de séparation de media, en particulier accumulateur hydraulique, y compris appareil de mesure correspondant et méthode de mesure

Country Status (5)

Country Link
US (1) US9279432B2 (fr)
EP (1) EP2705257B1 (fr)
JP (1) JP6034370B2 (fr)
DE (1) DE102011100532A1 (fr)
WO (1) WO2012149994A1 (fr)

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WO2012149994A1 (fr) 2012-11-08
US9279432B2 (en) 2016-03-08
JP2014517221A (ja) 2014-07-17
DE102011100532A1 (de) 2012-11-08
US20140060688A1 (en) 2014-03-06
JP6034370B2 (ja) 2016-11-30
EP2705257B1 (fr) 2019-09-25

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