EP2705257B1 - Media separating device, in particular hydraulic accumulateur, including measuring device and measuring method - Google Patents
Media separating device, in particular hydraulic accumulateur, including measuring device and measuring method Download PDFInfo
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- EP2705257B1 EP2705257B1 EP12715598.4A EP12715598A EP2705257B1 EP 2705257 B1 EP2705257 B1 EP 2705257B1 EP 12715598 A EP12715598 A EP 12715598A EP 2705257 B1 EP2705257 B1 EP 2705257B1
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Images
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
- F15B1/04—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
- the invention relates to a media separating device, in particular a hydraulic accumulator, with the features in the preamble of claim 1.
- 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 flowable 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 hydraulic oil or other pressurized fluids, are here among other things in media separation devices, such as hydraulic accumulators that perform a variety of tasks in hydraulic systems and energy storage, providing 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.
- the DE 101 52 777 A1 describes a device for determining the quality of a medium, in particular a lubricant and / or coolant, with a plurality of sensors which emit an electrical output signal depending on the respective sensor-specific input variable, wherein a sensor is a temperature sensor which emits an output signal substantially has only a dependence on the temperature of the medium and in particular is substantially 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 designed in this way makes it possible to determine quality-determining parameters of fluid media, regardless of their current temperature.
- the DE 10 2009 010 775 A1 describes a media separating device in the form of a hydraulic accumulator for receiving at least a partial volume of a pressurized liquid, wherein the hydraulic accumulator has 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 are electronically readable 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 US 4,788,851 discloses a media separating device, in particular a hydraulic accumulator, with a movable separating device for separating two media which are accommodated in mutually different media spaces, wherein by means of a measuring device a passage of at least one medium of a media space on the separating device in the other media space with the other medium is detectable, wherein the measuring device has at least one sensor element, and wherein the respective sensor element has a connection to a detent with respect to at least one of the media spaces.
- the sensor element is an optical sensor which projects into the interior of the one media space.
- a separator used in the known solution is a bubble-like elastomeric membrane, which separates two media spaces from one another within the storage housing, wherein a media space as a medium 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.
- the filling takes place against the compression force of the working gas, wherein the elastomeric separator "contracts" and moves so far.
- the separating device If hydraulic fluid is required again on the hydraulic device side, the separating device "relaxes" and, under the effect of the compressive force of the working gas, the required amount of fluid is pushed out of the reservoir housing via the connection point, whereby a partial fluid quantity regularly remains in the reservoir. Due to the permeability of the membrane material it comes in the long term to an unwanted transfer of hydraulic fluid to the so-called. Gas side of the hydraulic accumulator, which can happen abruptly in case of failure of the separation membrane, for example, by crack or fracture with the result that the "working capacity" of the hydraulic accumulator is impaired or even completely fails within the hydraulic circuit, which can significantly disrupt the operation of a hydraulic system or even impossible.
- the present invention seeks to provide a media separating device, in particular in the form of a hydraulic accumulator, which is able to increase the reliability in a position to detect the incidents described above with little components cost and promptly and to the Operator of the hydraulic system to which such hydraulic accumulators are regularly connected.
- connection takes place via at least one flexible cable connection, and that the respective cable is electrically conductively connected at its one end to the respective sensor element and is connected at its other end to the lock on parts of the storage housing.
- a passage of at least one medium of a media space of the media separating device via the separating device in the other media space with the respective other medium is detectable.
- 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 detectable 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 flowable media can serve, in particular, as a prerequisite for the application of safety functions or the functionally reliable control of operating sequences even in complex hydraulic systems.
- the sensor element 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 lock adjacent the end of the cable connection is connected to a connector part, which also preferably comprises an evaluation with.
- 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 is created 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.
- the additional media space of the hydraulic accumulator forms the fluid side.
- Other types of media separating devices in particular in the form of hydraulic accumulators, such as bellows accumulators, diaphragm accumulators or piston accumulators, can in principle be equipped with the relevant 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 be advantageously 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 evaluation, wherein provided by at least one heating element sensor element required for a defined increase in temperature of the medium heat output 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 Schudrahtmethode wherein a heating wire in the sensor element serves both as a heat source and as a temperature sensor.
- a thin film resistor can also be used on a ceramic substrate.
- the thin-film resistor is connected as a branch of a Wheatstone bridge.
- a supply voltage of the Wheatstone bridge can be pulsed and the rise of 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 into the other medium.
- This measuring method is particularly suitable if the media used in the media separating 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 may 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.
- a media separation device 1 in the form of a hydraulic accumulator 3 with a movable separator 5 for separating two media 7, 9 shown.
- the media 7, 9 are accommodated in mutually different media spaces 11, 13, wherein the movable separating device 5, the media spaces 11, 13 media-tightly separated from each other.
- a total of 15 designated measuring device serves to detect an unwanted transfer of the medium 9 from the media room 13 via the separator 5 in the other media space 11 with the other medium 7.
- 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 17 is arranged on the gas chamber 39 formed as a gas space 11 inside 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 port 47 On the opposite side to the connection opening 45 and in the direction of the Fig. 1 seen above the storage housing 27 is a further connection port 47 as part of a Aufschraubbauteils 49, via which the hydraulic accumulator 3 can be regularly filled on its gas side 39 with working gas or refilled.
- the pertinent structure of hydraulic accumulators 3 is common and already in an advance notification ( DE 10 2006 004 120 A1 ) described in more detail by the Applicant and incidentally in a variety of embodiments on the market freely available, so that will not be discussed in more detail here at this point.
- a compressible foam can also be used in addition or alternatively in the media space 11 as a medium or compressible packing, such as hollow foam body (not shown) and the like.
- the introduced into the media room 11 medium 7 is formed from the pertinent materials.
- the shows Fig. 1 already the situation of a so-called. Bubble break, in the unintentionally fluid 9 is changed from the media room side 13 on the gas media room side 11 with the working gas 7, so that at the bottom of the elastomer bladder already the fluid 9 has accumulated, which then via the measuring device 15 with the Sensor element 17 is detectable, which will be explained in more detail below.
- the measuring device 15 with the sensor element 17 serves to determine the unwanted described media transfer using a thermal and / or chemical and / or physical and / or optical and / or acoustic and / or electrical measuring method.
- the respective sensor element 17 has a connection 19 to the storage housing 27 via a lock 21, relative to the media space 11 such that in each occupied position of the separating device 5, the sensor element 17 can be brought into contact with the transferred medium 9.
- the connection 19 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 17 and with its other end 30 via the lock 21 of the storage housing 27 with parts of an evaluation 33.
- the terminal 21 adjacent end 30 of the cable connection 23 is so far connected to a connector part 31, in which the evaluation electronics 33 for evaluating measurement signals of the sensor element 17 is integrated.
- the measuring device 15 is for use in a media separating device 1 from at least the sensor element 17, the cable connection 23, the transmitter 33 and preferably the separator 5.
- the retrofit kit described already delivered hydraulic accumulator can be retrofitted with the measuring device 15 together with transmitter 33 by simply exchanging the flexible reservoir bladder for a new bladder 37, which has the measuring and evaluation electronics integrated.
- 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 17 can detect the unwanted crossing always at the lowest travel position of the piston.
- the same considerations apply to the mentioned bladder accumulator as well as to further storage solutions, such as bellows, spring or diaphragm accumulators, in which the solution according to the invention can also be used to detect the unwanted passage of media.
- the mentioned evaluation electronics 33 can furthermore have an output unit based on an electrical, optical, acoustic or haptic function and, according to the proposed solution, according to the Fig. 1 located directly on the hydraulic accumulator 3 within a kind of plug part 31. But via a corresponding cable or other information connection can also be the transmitter to a central Arrange, for example, within an overall control, which is then able to optionally monitor several hydraulic accumulators within an overall hydraulic system to the unwanted media transfer out to indicate a failure case the operator of the system.
- the measuring device 15 shown is capable of detecting the change in the thermal conductivity, in particular of the medium 7 located on the gas side 39, upon entry 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 17 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 illustrated instrument 57 is "0".
- the operating current in the heating resistor 55 changes its electrical resistance, whereby the resistance measuring bridge 51 is "adjusted".
- 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 measurement method is in Fig. 3 from 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 at one Working gas under a pressure of about 100 bar (trace 61) and at ambient pressure (trace 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.
- FIG. 4 is a schematic representation of a kind of acoustic measurement method using the use of a measuring device 115 explained in more detail.
- the sensor element 117 has a vibration device 113, which is excited to oscillate under the action of a field 119 of a field generation device 121 (cf. Fig. 5 ).
- the vibration behavior of the vibration device 113 changes here upon access of the flowable medium 9, wherein the change in the vibration behavior of the vibration device 113 is detected by the measuring device 115.
- the field generating device 121 is formed by a magnetic device 122.
- the measuring device 115 further has an electromagnetic coil 125, wherein the flow of the electromagnetic coil 125 and an electrical voltage in the coil 125 is influenced by oscillations of the excited by the electromagnetic coil 125 sensor element 117.
- the field generating device 121 in a single component, here in the form of the electromagnetic coil 125 summarized.
- the sensor element 117 is connected to the evaluation electronics 133 in FIG same way as in the Fig. 1 is shown connected via a flexible cable connection 123 as a connection 19.
- the vibrator 113 is formed in the manner of a reed switch 131.
- the reed switch 131 has two soft-magnetic, resilient metal tongues 134, 135 which lie opposite one another in the sensor element 117 and whose ends 137, 139 axially overlap with a length dimension a. At the in the Fig. 4 shown embodiment, the ends 137, 139 of the metal tongues 134, 135 do not touch. Radially, 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 119 resulting in Fig. 4 is shown only schematically, with increasing field strength, the metal tongues 134, 135 move towards each other.
- the metal tongues 134, 135 may also be in contact here depending on the field strength of the magnetic field 119. With decreasing field strength of the magnetic device 122, the metal tongues 134, 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 pertinent vibration process of the metal tongues 134, 135.
- Fig. 5 shows, in this case a vibration characteristic 141 or even a plurality of vibration characteristics can be detected via the measuring device 115.
- Fig. 5 shows two curves, the upper curve in the direction of the Fig. 5 shows a number of oscillations of the metal tongues 134, 135 above a predefinable threshold value of a vibration amplitude.
- the viewing direction in Fig. 5 the lower curve shows an example of the plot of the absolute oscillation amplitude of the metal tongues 134, 135 over time.
- the fluid transfer to the gas side of the hydraulic accumulator 3 can also be detected with this sensor element 117.
- the sensor element 117 has an envelope 143, which is preferably formed of a mineral glass material, wherein the envelope 143, the metal tongues 134, 135 radially and axially completely encloses, while maintaining a minimum radial distance to the metal tongues 134, 135 to the latter not to interfere with 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 117 and the measuring device 115 is provided by an electrical energy source 147 in the form of a non-illustrated accumulator (battery) or preferably wired from the outside, the sensor 117 in turn via a cable connection 123 as a connection 19 to the Evaluation electronics 133 is connected.
- an electrical energy source 147 in the form of a non-illustrated accumulator (battery) or preferably wired from the outside, the sensor 117 in turn via a cable connection 123 as a connection 19 to the Evaluation electronics 133 is connected.
- 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 are in reflection or damping properties of different liquids to see light passage of 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.
- a separation or dissolution of the sensor element can be detected, for example, with a spring-biased switch.
- the switch is preferably designed in such a way that the change in volume opens or closes the switch and in this respect emits 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, it is preferable to select an unstable plastic which responds 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 carried out as an absorbent fleece, The fleece can transport the fluid to the sensor element and there is a spatially distributed sensor and Auswertystem.
- 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.
- 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 for the present task, to detect an unwanted media transfer in hydraulic accumulators, very well suited.
- 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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Description
Die Erfindung betrifft eine Medientrennvorrichtung, insbesondere einen Hydrospeicher, mit den Merkmalen im Oberbegriff von Anspruch 1. Die Erfindung betrifft ferner eine Messeinrichtung, auch als Umrüst- oder Nachrüstsatz konzipiert, sowie ein Messverfahren zum Betrieb der Messeinrichtung in der Medientrennvorrichtung.The invention relates to a media separating device, in particular a hydraulic accumulator, with the features in the preamble of
Medien und insbesondere strömungsfähige Medien im Sinne der vorliegenden Erfindung werden häufig in der Antriebstechnik eingesetzt, beispielsweise als Schmier- und/oder Kühlmittel oder als Druckmittel in hydraulischen Anlagen zur Übertragung von Energien von einer Druckmittelquelle zu einem Verbraucher. Strömungsfähige Medien, wie beispielsweise Hydrauliköl oder sonstige Druckfluide, befinden sich hierbei unter anderem in Medientrennvorrichtungen, wie Hydrospeichern, die in hydraulischen Anlagen verschiedenste Aufgaben erfüllen und beispielsweise der Energiespeicherung, der Bereitstellung einer Fluidreserve, der Notbetätigung von Verbrauchern, der Druckstoßdämpfung und dergleichen mehr dienen. Ein sicherer und ordnungsgemäßer Betrieb einer hydraulischen Anlage erfordert neben der Kenntnis von physikalischen Betriebsparametern, wie Druck- oder Strömungsgeschwindigkeiten, auch eine Aussage darüber, ob die Medientrennvorrichtung selbst störungsfrei und funktionssicher im Betrieb ist.Media and in particular flowable 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 hydraulic oil or other pressurized fluids, are here among other things in media separation devices, such as hydraulic accumulators that perform a variety of tasks in hydraulic systems and energy storage, providing 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.
Die
Die
Die
Als Trenneinrichtung dient bei der bekannten Lösung eine blasenartig ausgebildete Elastomermembran, die innerhalb des Speichergehäuses zwei Medienräume voneinander separiert, wobei der eine Medienraum als Medium bevorzugt ein kompressibles Arbeitsgas, wie Stickstoffgas, aufweist und der andere Medienraum ist über die Anschlussstelle im Speichergehäuse mit Hydraulikfluid als weiteres unter Druck stehendes Medium, von der Hydraulikeinrichtung kommend, befüllbar. Die Befüllung erfolgt gegen die Kompressionskraft des Arbeitsgases, wobei sich die elastomere Trenneinrichtung "zusammenzieht" und insoweit bewegt. Wird auf Seiten der Hydraulikeinrichtung wieder Hydraulikfluid benötigt, "entspannt" sich die Trenneinrichtung und unter der Wirkung der Kompressionskraft des Arbeitsgases wird die benötigte Fluidmenge aus dem Speichergehäuse über die Anschlussstelle ausgeschoben, wobei regelmäßig eine Teilfluidmenge im Speicher verbleibt. Bedingt durch die Permeabilität des Membranwerkstoffes kommt es langfristig gesehen zu einem ungewollten Übertritt des Hydraulikfluids auf die sog. Gasseite des Hydrospeichers, was im Versagensfall der Trennmembran beispielsweise durch Riss- oder Bruchbildung auch schlagartig geschehen kann mit der Folge, dass das "Arbeitsvermögen" des Hydrospeichers beeinträchtigt ist oder dieser gar innerhalb des Hydraulickreises völlig ausfällt, was den Betrieb einer Hydraulikanlage erheblich stören oder gar unmöglich machen kann.As a separator used in the known solution is a bubble-like elastomeric membrane, which separates two media spaces from one another within the storage housing, wherein a media space as a medium 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. The filling takes place against the compression force of the working gas, wherein the elastomeric separator "contracts" and moves so far. If hydraulic fluid is required again on the hydraulic device side, the separating device "relaxes" and, under the effect of the compressive force of the working gas, the required amount of fluid is pushed out of the reservoir housing via the connection point, whereby a partial fluid quantity regularly remains in the reservoir. Due to the permeability of the membrane material it comes in the long term to an unwanted transfer of hydraulic fluid to the so-called. Gas side of the hydraulic accumulator, which can happen abruptly in case of failure of the separation membrane, for example, by crack or fracture with the result that the "working capacity" of the hydraulic accumulator is impaired or even completely fails within the hydraulic circuit, which can significantly disrupt the operation of a hydraulic system or even impossible.
Zwar ist in der
Ausgehend von diesem Stand der Technik liegt der Erfindung die Aufgabe zugrunde, eine Medientrennvorrichtung, insbesondere in Form eines Hydrospeichers, zu schaffen, die zur Erhöhung der Funktionssicherheit in der Lage ist, die vorstehend beschriebenen Störfälle mit wenig Bauteilen kostengünstig sowie zeitnah zu detektieren und an den Betreiber der Hydraulikanlage weiterzumelden, an die solche Hydrospeicher regelmäßig angeschlossen sind.Based on this prior art, the present invention seeks to provide a media separating device, in particular in the form of a hydraulic accumulator, which is able to increase the reliability in a position to detect the incidents described above with little components cost and promptly and to the Operator of the hydraulic system to which such hydraulic accumulators are regularly connected.
Diese Aufgaben sind durch die in Anspruch 1 bestimmte Medientrennvorrichtung und durch ein nach einem nebengeordneten Anspruch bestimmtes Messverfahren zum Betrieb der Messeinrichtung gelöst.These objects are achieved by the media separating device specified in
Erfindungsgemäß ist nach dem kennzeichnenden Teil des Patentanspruchs 1 vorgesehen, dass die Anbindung über mindestens eine flexible Kabelverbindung erfolgt, und dass das jeweilige Kabel an seinem einen Ende mit dem jeweiligen Sensorelement elektrisch leitend verbunden ist und mit seinem anderen Ende an der Feststelle an Teilen des Speichergehäuses verbunden ist.According to the invention, it is provided according to the characterizing part of
Ferner ist vorgesehen, dass mittels einer Messeinrichtung ein Übertritt zumindest eines Mediums eines Medienraumes der Medientrennvorrichtung über die Trenneinrichtung in den anderen Medienraum mit dem jeweils anderen Medium detektierbar ist. Mit Hilfe der Messeinrichtung ist vorteilhaft bewirkt, dass vorzugsweise in jedweder Bauart einer Medientrennvorrichtung zumindest das Vorhandensein und gegebenenfalls die Art eines strömungsfähigen Mediums auf einfache Weise detektierbar ist, sobald zumindest eines der beiden Medien von seinem angestammten Medienraum ungewollt in den anderen Medienraum übertritt. Das Detektieren von strömungsfähigen Medien kann hierbei insbesondere als Voraussetzung für die Anwendung von Sicherheitsfunktionen oder das funktionssichere Steuern von Betriebsabläufen auch in komplex aufgebauten Hydraulikanlagen dienen.It is further provided that by means of a measuring device, a passage of at least one medium of a media space of the media separating device via the separating device in the other media space with the respective other medium is detectable. With the help of 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 detectable as soon as at least one of the two media unintentionally transferred from its traditional media space in the other media space. In this case, the detection of flowable media can serve, in particular, as a prerequisite for the application of safety functions or the functionally reliable control of operating sequences even in complex hydraulic systems.
In einem besonders bevorzugten Ausführungsbeispiel kann das Sensorelement den Medienübertritt über die Trenneinrichtung unter Anwendung eines thermischen und/oder chemischen und/oder physikalischen und/oder optischen und/oder akustischen und/oder elektrischen Messverfahrens feststellen. Das der Feststelle benachbarte Ende der Kabelverbindung ist mit einem Steckerteil verbunden, das auch bevorzugt eine Auswerteelektronik mit umfasst. Auf diese Weise ist in besonders kompakter und kostengünstig herstellbarer Weise eine Medientrennvorrichtung mit einer Messeinrichtung zur Detektion eines Übertritts zumindest eines Mediums eines Medienraumes über die Trenneinrichtung in den anderen Medienraum mit dem anderen Medium geschaffen.In a particularly preferred embodiment, the sensor element 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 lock adjacent the end of the cable connection is connected to a connector part, which also preferably comprises an evaluation with. In this way, 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 is created in a particularly compact and inexpensive manner.
Die Medientrennvorrichtung ist in einem bevorzugten Ausführungsbeispiel als Hydrospeicher in der Art eines Blasenspeichers mit einer flexiblen Blase als Trenneinrichtung gebildet. Das jeweilige Sensorelement ist dabei auf dem als Gasseite ausgebildeten Medienraum innerhalb des Speichergehäuses des Hydrospeichers angeordnet. Der weitere Medienraum des Hydrospeichers bildet hierbei die Fluidseite. Auch andere Bauformen von Medientrennvorrichtungen, insbesondere in Form von Hydrospeichern, wie etwa von Balgspeichern, Membranspeichern oder auch Kolbenspeichern, lassen sich grundsätzlich mit der dahingehenden, erfindungsgemäßen Messeinrichtung ausstatten.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. The additional media space of the hydraulic accumulator forms the fluid side. Other types of media separating devices, in particular in the form of hydraulic accumulators, such as bellows accumulators, diaphragm accumulators or piston accumulators, can in principle be equipped with the relevant measuring device according to the invention.
Es kann vorteilhaft sein, eine Messeinrichtung auch als Umrüst- oder Nachrüstsatz zu konzipieren, um diese bei einer vorhandenen Medientrennvorrichtung nachträglich einzusetzen und zur Anwendung zu bringen. Die als Umrüst- oder Nachrüstsatz konzipierte Messeinrichtung weist hierbei mindestens ein Sensorelement und eine Kabelverbindung sowie eine Auswerteelektronik und bevorzugt eine Trenneinrichtung auf. Besteht beispielsweise der Wunsch des Betreibers einer hydraulischen Anlage zu einer verbesserten Überwachung, insbesondere der Medientrennvorrichtungen in der hydraulischen Anlage, so können die vorhandenen Medientrennvorrichtungen durch den nachträglichen Einbau eines dahingehenden Umrüst- oder Nachrüstsatzes modifiziert und verbessert werden.It may be advantageous to design a measuring device as a retrofit or retrofit kit to subsequently use this in an existing media separating device and bring to the application. 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. For example, if the desire of the operator of a hydraulic system for improved monitoring, especially the media separating devices in the hydraulic system, so the existing media separating devices can be modified and improved by the subsequent installation of a pertinent conversion or retrofit kit.
Ein Messverfahren zum Betrieb der Messeinrichtung in einer Medientrennvorrichtung kann vorteilhaft als thermisches Messverfahren konzipiert sein, wobei die Wärmeleitfähigkeit eines Mediums in einem Medienraum der Medientrennvorrichtung zur Auswertung herangezogen wird, wobei durch ein mit zumindest einem Heizwiderstand versehenes Sensorelement die für eine definierte Temperaturerhöhung des Mediums erforderliche Heizleistung bestimmt wird. Auch kann die Temperaturerhöhung des Mediums in dem Medienraum bei Anwendung einer definierten Heizleistung bestimmt werden. Es eignet sich hierbei vorzugsweise die Anwendung einer transienten Heizdrahtmethode, wobei ein Heizdraht in dem Sensorelement sowohl als Wärmequelle als auch als Temperatursensor dient. Anstatt der Anwendung eines Drahtes kann auch ein Dünnfilmwiderstand auf einem Keramiksubstrat verwendet werden. Vorteilhaft ist hierbei der Dünnfilmwiderstand als Zweig einer Wheatstone-Brücke geschaltet. Eine Versorgungsspannung der Wheatstone-Brücke kann hierbei gepulst und der Anstieg des Brückensignals, d.h. der Temperaturanstieg von der Auswerteeinrichtung analysiert werden.A measuring method for operating the measuring device in a media separating device can be advantageously 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 evaluation, wherein provided by at least one heating element sensor element required for a defined increase in temperature of the medium heat output is determined. Also, the temperature increase of the medium in the media room can be determined using a defined heat output. In this case, it is preferable to use a transient Heizdrahtmethode, wherein a heating wire in the sensor element serves both as a heat source and as a temperature sensor. Instead of using a wire, a thin film resistor can also be used on a ceramic substrate. Advantageously, in this case, the thin-film resistor is connected as a branch of a Wheatstone bridge. In this case, a supply voltage of the Wheatstone bridge can be pulsed and the rise of the bridge signal, ie the temperature rise, can be analyzed by the evaluation device.
Es kann auch vorteilhaft sein, das Messverfahren als optisches Messverfahren zu konzipieren und hierbei vorzugsweise die Lumineszenz des Mediums in dem jeweiligen Medienraum zu bestimmen. Vorteilhaft lässt sich auch ein optisches Messverfahren anwenden, wobei die Dämpfungs- und Reflektionseigenschaften des jeweils übergetretenen Mediums für die Auswertung optisch hervorgezogen werden.It 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. Advantageously, 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.
Als elektrisches Messverfahren eignet sich vorzugsweise die elektrische Leitfähigkeit bei ungewolltem Übertritt des einen Mediums in das andere Medium. Dieses Messverfahren eignet sich besonders, wenn die in der Medientrennvorrichtung verwendeten Medien keine Isolatoren darstellen. Es kann auch vorteilhaft sein, die dielektrischen Eigenschaften des jeweiligen Mediums zur Auswertung heranzuziehen. Es kann ferner vorteilhaft sein, ein chemisches Messverfahren anzuwenden, wobei hierbei insbesondere solche Messverfahren Anwendung finden können, bei denen sich zumindest ein Teil des Sensorelements bei Kontakt mit dem jeweils anderen Medium aufgrund einer chemischen oder physikalischen Reaktion verändert. Solche Veränderungen können ein detektierbares Aufquellen oder gar ein Auflösen zumindest eines Teils des Sensorelements sein. Es können auch Farbänderungen aufgrund der chemischen Reaktion des Mediums mit einem Teil des Sensorelements ausgenutzt werden, um den Übertritt eines Mediums eines Medienraumes über die Trenneinrichtung in den anderen Medienraum mit dem anderen Medium zu detektieren.As an electrical measuring method is preferably the electrical conductivity in case of unwanted transfer of the one medium into the other medium. This measuring method is particularly suitable if the media used in the media separating 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 may 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.
Nachstehend ist die Erfindung anhand von in der Zeichnung dargestellten Ausführungsbeispielen im Einzelnen erläutert. Es zeigen:
- Fig. 1
- eine schematische, nicht maßstäbliche Längsschnitt-Darstellung einer Medientrennvorrichtung in Form eines als Blasenspeicher ausgebildeten Hydrospeichers;
- Fig. 2
- eine Prinzipdarstellung eines thermischen Messverfahrens zum Betrieb einer Messeinrichtung in einer Medientrennvorrichtung;
- Fig. 3
- Messergebnisse einer Wärmeleitfähigkeitsmessung bei Zutritt eines gasförmigen und eines flüssigen Mediums an ein Sensorelement der Messeinrichtung;
- Fig. 4
- eine Prinzipdarstellung eines "akustischen Messverfahrens" zum Betrieb einer Messeinrichtung in einer Medientrennvorrichtung; und
- Fig. 5
- Messergebnisse des "akustischen Messverfahrens" in Form eines Verlaufs zweier Schwingungskenngrößen, wie man sie im Messbetrieb mit der Vorrichtung nach der
Fig. 4 erhält.
- Fig. 1
- a schematic, not to scale longitudinal sectional view of a media separating device in the form of a designed as a bladder accumulator hydraulic accumulator;
- Fig. 2
- a schematic diagram of a thermal measuring method for operating a measuring device in a media separating device;
- Fig. 3
- Measurement results of a thermal conductivity measurement upon access of a gaseous and a liquid medium to a sensor element of the measuring device;
- Fig. 4
- a schematic diagram of an "acoustic measurement method" for operating a measuring device in a media separating device; and
- Fig. 5
- Measurement results of the "acoustic measurement method" in the form of a course of two vibration characteristics, as they are in the measuring operation with the device according to the
Fig. 4 receives.
In der
Der Hydrospeicher 3 ist in der Art eines Blasenspeichers 35 ausgebildet und weist eine flexible Blase 37 aus Elastomermaterial bestehend als Trenneinrichtung 5 auf. Der Hydrospeicher 3 dient der Aufnahme eines gasförmigen Mediums 7 in Form eines Arbeitsgases, insbesondere in Form von Stickstoffgas, sowie der Aufnahme eines weiteren Fluidmediums 9; im vorliegenden Fall bestehend aus Hydraulikflüssigkeit. Die dahingehenden Medien 7, 9 können durchaus unter einem Druck von bis zu 600 bar und mehr stehen. In dem in der
Auf der gegenüberliegenden Seite zu der Anschlussöffnung 45 und in Blickrichtung auf die
Anstelle des Arbeitsgases auf der Gasseite 39 kann auch zusätzlich oder alternativ in den Medienraum 11 als Medium ein kompressibler Schaum eingesetzt sein oder kompressible Füllkörper, wie Hohlschaumkörper (nicht dargestellt) und dergleichen mehr. Insoweit ist das dann in den Medienraum 11 eingebrachte Medium 7 aus den dahingehenden Werkstoffen gebildet. Ferner zeigt die
Das jeweilige Sensorelement 17 hat eine Anbindung 19 an das Speichergehäuse 27 über eine Feststelle 21, bezogen auf den Medienraum 11 derart, dass in jeder eingenommenen Position der Trenneinrichtung 5 das Sensorelement 17 mit dem übergetretenen Medium 9 in Berührung bringbar ist. In dem in
Die Messeinrichtung 15, von der in
Neben dem beschriebenen Blasen-Hydrospeicher 3 können auch andere Medientrennvorrichtungen mit der Messeinrichtung 15 ausgestattet werden. So lässt sich die Erfindung auch bei Kolbenspeichern einsetzen, bei denen die Trenneinrichtung 5 aus einem gegenüber der Speichergehäusewand abgedichteten Verfahrkolben gebildet ist, über dessen Dichtsysteme gleichfalls Fluid von der Fluidseite auf die Gasseite des Speichers ungewollt überwechseln kann, was auch für den Fall gilt, dass eine Dichtung des Kolbens vollständig versagt. Insbesondere bei einer dahingehenden Ausgestaltung ist jedenfalls sicherzustellen, dass durch ein entsprechend lang gewähltes elektrisches Verbindungskabel 25 in jeder Verfahrstellung des Kolbens das zugehörige Sensorelement 17 den ungewollten Übertritt auch immer an der tiefsten Verfahrstellung des Kolbens detektieren kann. Gleiche Überlegungen gelten natürlich auch für den angesprochenen Blasenspeicher sowie für weitere Speicherlösungen, wie beispielsweise Balg-, Feder- oder Membranspeicher, bei denen die erfindungsgemäße Lösung gleichfalls zum Einsatz kommen kann, um den ungewollten Medienübertritt zu detektieren.In addition to the described bladder
Die angesprochene Auswerteelektronik 33 kann ferner eine auf einer elektrischen, optischen, einer akustischen oder haptischen Funktionsweise basierende Ausgabeeinheit aufweisen und sich gemäß dem Lösungsvorschlag nach der
In der
Das Resultat dieses Messverfahrens ist in
In der
Wie die
Die Schwingungseinrichtung 113 ist in der Art eines Reed-Schalters 131 ausgebildet. Der Reed-Schalter 131 weist zwei weichmagnetische, federnde Metallzungen 134, 135 auf, die sich in dem Sensorelement 117 einander gegenüberliegen und deren Enden 137, 139 sich axial mit einem Längenmaß a überlappen. An dem in der
Wird die elektromagnetische Spule 125 bestromt, so ergibt sich das magnetische Feld 119, das in
Wie die
Je nachdem, welches Medium mit dem Sensorelement 117 in Berührung kommt, sehen die Schwingungsverläufe gemäß der beispielhaften Darstellung nach der
Somit lässt sich auch mit diesem Sensorelement 117 der Fluidübertritt auf die Gasseite des Hydrospeichers 3 detektieren.Thus, the fluid transfer to the gas side of the
Wie
Die Energie für den Betrieb des Sensorelements 117 und der Messeinrichtung 115 wird von einer elektrischen Energiequelle 147 in Form eines nicht näher dargestellten Akkumulators (Batterie) oder bevorzugt kabelgebunden von außen her bereitgestellt, wobei der Sensor 117 wiederum über eine Kabelverbindung 123 als Anbindung 19 an die Auswerteelektronik 133 angeschlossen ist.The energy for the operation of the
Neben dem beschriebenen Messverfahren können auch optische Verfahren zum Einsatz kommen. So sind sog. Streulichtverfahren gut für eine Detektion von Fluid-Nebeln geeignet, sofern sich eine solche Nebelbildung auf der Gasseite der Speicherblase 37 einstellen sollte. Bei bestimmten Medien lässt sich eventuell zu deren Detektion auch ein etwaiges Vorhandensein von Luminiszenz verwenden. Weitere optische Auswertemöglichkeiten sind in Reflektions- oder Dämpfungseigenschaften von verschiedenen Flüssigkeiten gegenüber Lichtdurchtritt eines Sensors zu sehen.In addition to the described measuring method, optical methods can also be used. Thus, 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
Ferner können elektrische Messverfahren zum Einsatz kommen, die im hier aufgezeigten Sinne vorzugsweise auf der Messung von dielektrischen oder konduktiven Eigenschaften des Mediums beruhen. Sowohl anhand der Dielektrizitätzahl als auch der Leitfähigkeit lassen sich Flüssigkeiten und Gase voneinander unterscheiden.Furthermore, 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.
Bei Einsatz von chemischen Messverfahren sollen Messsysteme zum Einsatz kommen, in denen sich ein Element bei Kontakt mit der zu detektierenden Flüssigkeit aufgrund einer chemischen oder physikalischen Reaktion verändert. Diese Veränderungen können bei dem beschriebenen, ungewollten Medienzutritt sein:
- Aufquellen oder Volumenzunahme eines Sensorelementes;
- Auflösen oder Volumenabnahme eines Sensorelementes;
- Farbänderung eines Sensorelementes und
- Änderung der elektrischen Eigenschaften eines Sensorelementes.
- Swelling or volume increase of a sensor element;
- Dissolution or volume decrease of a sensor element;
- Color change of a sensor element and
- Change of the electrical properties of a sensor element.
Ein Auftrennen oder Auflösen des Sensorelementes kann beispielsweise mit einem federvorgespannten Schalter detektiert werden. Der Schalter ist vorzugsweise derart gestaltet, dass die Volumenänderung den Schalter öffnet oder schließt und insoweit ein Signal an die Messelektronik 33 abgibt. Als Materialien für die hier angesprochenen Sensorelemente kommen bevorzugt Kunststoffe in Frage. In Abhängigkeit von der zu detektierenden Flüssigkeit wird bevorzugt ein hierauf ansprechender unbeständiger Kunststoff ausgewählt.A separation or dissolution of the sensor element can be detected, for example, with a spring-biased switch. The switch is preferably designed in such a way that the change in volume opens or closes the switch and in this respect emits a signal to the measuring
Ändert ein Polymer als Sensorelement aufgrund seines Kontaktes mit dem Fluid seine Farbe, kann dies wiederum durch geeignete Messverfahren detektiert werden. Wird das Polymer vorzugsweise als saugfähiges Vlies ausgeführt, kann das Vlies das Fluid zum Sensorelement transportieren und es entsteht ein räumlich verteiltes Sensor- und Auswertesystem.If 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. If the polymer is preferably carried out as an absorbent fleece, The fleece can transport the fluid to the sensor element and there is a spatially distributed sensor and Auswertystem.
Ändert sich die elektrische Leitfähigkeit bei Kontakt mit dem Fluid, kann auch dieser Effekt zur Detektion verwendet werden. Wie bei den bereits erwähnten elektrischen Verfahren kann man beispielsweise eine Dünnfilm-Interdigitalelektrodenstruktur einsetzen, die mit dem Polymer beschichtet ist.If the electrical conductivity changes upon contact with the fluid, this effect can also be used for detection. As with the already mentioned electrical methods, it is possible to use, for example, a thin-film interdigital electrode structure coated with the polymer.
Abschließend sei noch auf Messverfahren verwiesen, die sog. mechanische Oszillatoren beinhalten. Das dahingehende Messprinzip beruht auf dem Viskositätsunterschied zwischen Arbeitsgas und Fluid. So ist die Viskosität von Stickstoff zwar auch druck- und temperaturabhängig; liegt jedoch im gesamten für die Messanwendung relevanten Bereich um mehr als zwei Größenordnungen unter der Viskosität von Hydraulikflüssigkeiten.Finally, reference should be made to measuring methods which include so-called mechanical oscillators. The pertinent measuring principle is based on the viscosity difference between working gas and fluid. Although the viscosity of nitrogen is also dependent on pressure and temperature; however, is more than two orders of magnitude lower than the viscosity of hydraulic fluids in the entire range of measurement applications.
Der mechanische Schwinger (nicht dargestellt) befindet sich innerhalb des Fluids und seine Schwingung wird durch das Fluid entsprechend gedämpft. Die auf den Schwinger wirkende Dämpfung ist dabei proportional zur Viskosität des Fluids.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.
Als mechanische Schwinger kommen insbesondere in Frage:
- Schwingquarze wie in einer Quarz-Crystal-Microbalance (QCM),
- Akustische Oberflächenwellensensoren (SAW),
- mikromechanische Stimmgabeln,
- magneto-elastische Filme,
- mechanisch- magnetische Systeme auf der Basis von Spulen und weichmagnetischen Schwingungselementen.
- Quartz crystals as in a quartz crystal microbalance (QCM),
- Acoustic surface wave sensors (SAW),
- micromechanical tuning forks,
- magneto-elastic films,
- mechanical-magnetic systems based on coils and soft magnetic vibration elements.
QCM-Sensoren, SAW-Sensoren und mikromechanische Stimmgabeln lassen sich sehr gut zur Viskositätsbestimmung von Hydraulikflüssigkeiten mit heranziehen und die dahingehende Messtechnik ist für die vorliegende Aufgabenstellung, einen ungewollten Medienübertritt bei Hydrospeichern zu detektieren, sehr gut geeignet.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 for the present task, to detect an unwanted media transfer in hydraulic accumulators, very well suited.
Ferner lassen sich magneto-elastische Filme verwenden, wobei die Resonanzfrequenz eines sog. magneto-elastischen Films sich mit den Umgebungsbedingungen ändert, d.h. mit dem Medium, in dem sich der Film befindet. Der Film wird bevorzugt über eine Magnetspule resonanzangeregt und über eine separate sog. Pick-up Spule oder durch die Erregerspule selbst kann die Schwingung des magneto-elastischen Films detektiert werden. Dergestalt lässt sich auch dieser Effekt zur Unterscheidung, ob sich der Sensorfilm in Öl oder Gas befindet, einsetzen. Die dahingehenden mechanischen Oszillatoren lassen sich dem sog. physikalischem Messverfahren im Sinne des vorliegenden Anmeldegegenstandes zuordnen.Furthermore, 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.
Claims (5)
- Media separating device, in particular a hydraulic accumulator (3), with media chambers (11, 13) which differ from one another, with a storage housing (27), which at least partially delimits the media chambers (11, 13), and with a movable separating means (5) for separating two media (7, 9), which are received in the media chambers (11, 13), wherein, by means of a measuring device (15, 115), an overflow of at least one medium (7, 9) from a medium chamber (11, 13) via the separating means (5) into the other media chamber (11, 13) with the other medium (7, 9) can be detected, wherein the measuring device (15, 115) comprises at least one sensor element (17, 117), and wherein the respective sensor element (17) has a connection (19) to a fixed point (21) related to at least one of the media chambers (11, 13), wherein, in each position adopted by the separating means (5), the sensor element (17) can be brought into contact with the overflowing medium (7, 9), characterised in that the connection (19) is provided by way of at least one flexible cable connection (23), and that the respective cable (25) is connected at its one end (29) to the respective sensor element (17) in an electrically conductive manner, and at its other end (30) at the fixed point (21) it is secured to parts of the storage housing (27).
- Media separating device according to claim 1, characterised in that the at least one sensor element (17, 117) detects the overflow by making use of a- thermal and/or- chemical and/or- physical and/or- optical and/or- acoustic and/or- electrical measuring method.
- Media separating device according to any one of the preceding claims, characterised in that end (30) of the cable connection (23) adjacent to the fixed point (21) is connected with a plug part (31), which preferably comprises an evaluation electronics unit (33, 133).
- Media separating device according to any one of the preceding claims, characterised in that the hydraulic accumulator (3) is a bladder accumulator (35), with a flexible bladder (37) as separating means (5), and that the respective sensor element (17, 117) is arranged on the media chamber (11) configured as the gas side (39) inside the storage housing (27), of which the further media chamber (13) forms the fluid side (41) of the hydraulic accumulator (3).
- Measuring method for operating the measuring device (15) in a media separating device (1) according to any one of claims 1 to 4, characterised in that recourse is made to- thermal measuring method for the thermal conductivity,- optical measuring method for the mist formation, luminescence, or the reflection properties,- acoustic measuring method for the damping properties,- electrical measuring method for the electrical conductivity,- chemical measuring method for a change of state or change of colour, and- physical measuring method for the behaviour of mechanical oscillatorsfor detecting an unwanted media overflow from one media chamber (11, 13) to the other media chamber (13, 11) via the separating means (5).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011100532A DE102011100532A1 (en) | 2011-05-05 | 2011-05-05 | Medium separating device, in particular hydraulic accumulator including associated measuring device and measuring method |
PCT/EP2012/001559 WO2012149994A1 (en) | 2011-05-05 | 2012-04-07 | Media separating device, in particular hydraulic accumulator, including associated measuring apparatus and measuring method |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2705257A1 EP2705257A1 (en) | 2014-03-12 |
EP2705257B1 true EP2705257B1 (en) | 2019-09-25 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP12715598.4A Active EP2705257B1 (en) | 2011-05-05 | 2012-04-07 | Media separating device, in particular hydraulic accumulateur, including measuring device and measuring method |
Country Status (5)
Country | Link |
---|---|
US (1) | US9279432B2 (en) |
EP (1) | EP2705257B1 (en) |
JP (1) | JP6034370B2 (en) |
DE (1) | DE102011100532A1 (en) |
WO (1) | WO2012149994A1 (en) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3007519B1 (en) * | 2013-06-25 | 2016-12-09 | Technoboost | IMPROVED DEVICE FOR MEASURING THE TEMPERATURE OF A GAS CONTAINED IN AN ENCLOSURE, OLEOPNEUMATIC ACCUMULATOR CONTAINING SUCH A DEVICE |
DE102014001283A1 (en) | 2014-02-01 | 2015-08-06 | Hydac Technology Gmbh | accumulator |
DE102014005637A1 (en) * | 2014-04-16 | 2015-10-22 | Hydac Electronic Gmbh | Fluid-working tool |
US10408641B2 (en) | 2014-10-30 | 2019-09-10 | Cameron International Corporation | Measurement system |
CN104897351B (en) * | 2015-05-22 | 2017-06-30 | 合肥通用机械研究院 | Method and system for testing air tightness of welding diaphragm type energy storage pressure container |
WO2017023303A1 (en) | 2015-08-05 | 2017-02-09 | Stren Microlift Technology, Llc | Hydraulic pumping system for use with a subterranean well |
US10167865B2 (en) | 2015-08-05 | 2019-01-01 | Weatherford Technology Holdings, Llc | Hydraulic pumping system with enhanced piston rod sealing |
USD797169S1 (en) * | 2015-08-08 | 2017-09-12 | Abduz Zahid | Pulsation dampener bladder |
CN105757012B (en) * | 2016-04-14 | 2018-04-06 | 江阴秋钧机电设备有限公司 | Monitor the accumulator of accumulator oil liquid leakage |
KR101897735B1 (en) * | 2016-12-23 | 2018-09-12 | 국방과학연구소 | Accumulator |
DE102018002315A1 (en) | 2018-03-19 | 2019-09-19 | Hydac Technology Gmbh | Pressure accumulator with a monitoring device |
DE102019005819B3 (en) * | 2019-08-21 | 2020-10-01 | Armano Messtechnik GmbH | Diaphragm seal with sensor monitoring |
AU2021211391A1 (en) * | 2020-01-21 | 2023-01-05 | UGT Group Pty Ltd | Accumulator |
DE102020104040B3 (en) * | 2020-02-17 | 2021-02-25 | Ifm Electronic Gmbh | Monitored hydropneumatic bladder accumulator |
KR20210132269A (en) * | 2020-04-24 | 2021-11-04 | 주식회사 플로우포스 | Accumulator |
DE102021102991B3 (en) | 2021-02-09 | 2022-02-10 | Ifm Electronic Gmbh | Method of operating a hydropneumatic bladder accumulator |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3920047A (en) * | 1974-03-22 | 1975-11-18 | Jacques H Mercier | Gas fitting for pressure accumulator |
US4167201A (en) | 1978-04-03 | 1979-09-11 | Greer Hydraulics, Inc. | Pressure accumulator with failure indicator |
US4428401A (en) * | 1982-08-12 | 1984-01-31 | Vsi Corporation | Failure sensing hydraulic accumulator and system |
FR2603954B1 (en) * | 1986-09-15 | 1988-12-16 | Olaer Ind Sa | PRESSURE TANK WITH LIQUID PRESENCE SENSOR IN A GAS CHAMBER |
JPH0792083B2 (en) * | 1988-03-04 | 1995-10-09 | 宣行 杉村 | Prada type accumulator with movable bowl sensor |
JPH028501A (en) * | 1988-06-27 | 1990-01-12 | Mitsubishi Electric Corp | Piston type accumulator |
DE4006905A1 (en) | 1990-03-06 | 1991-09-12 | Hydac Technology Gmbh | METHOD FOR DETERMINING THE GAS LENGTH OF HYDROSTIC STORAGE AND FOR COMPLIANCE WITH A PRESSURE SETPOINT VALUE OF THE GAS SUPPLY DURING OPERATION |
DE4115342C2 (en) * | 1991-05-10 | 1994-06-23 | Hydac Technology Gmbh | Hydropneumatic accumulator with a guide |
DE4333098A1 (en) * | 1993-09-29 | 1995-01-19 | Bosch Gmbh Robert | Pressure switch for hydraulic units |
DE19651384A1 (en) * | 1996-12-11 | 1998-06-18 | Bosch Gmbh Robert | Packaging seal verification method with acceleration or rotation sensor |
DE10131855A1 (en) * | 2001-06-30 | 2003-01-23 | Endress & Hauser Gmbh & Co Kg | Diaphragm seal with device for detecting membrane breaks and connection adapter with device for detecting membrane breaks |
DE10133745A1 (en) * | 2001-07-11 | 2003-01-23 | Endress & Hauser Gmbh & Co Kg | Pressure sensor and method for its operation |
DE10152777A1 (en) | 2001-10-29 | 2003-05-15 | Hydac Electronic Gmbh | Device and method for determining the quality of a medium, in particular a lubricant and / or coolant |
DE10233454A1 (en) * | 2002-07-24 | 2004-02-12 | Hydac Technology Gmbh | hydraulic accumulator |
DE102005001097A1 (en) * | 2005-01-08 | 2006-07-27 | Abb Patent Gmbh | Pressure sensor (I) |
DE102006004120A1 (en) * | 2006-01-25 | 2007-07-26 | Hydac Technology Gmbh | Hydraulic accumulator, has coaxially abutting plastics casings, with poppet valve for controlling supply and extraction of medium |
DE102006040325A1 (en) * | 2006-08-29 | 2008-03-13 | Endress + Hauser Gmbh + Co. Kg | Joining section`s tightness monitoring device for differential pressure measuring device, has detection unit detecting condition change of detection medium, and output unit generating indication that leakage is occurred in joining section |
JP2009096338A (en) * | 2007-10-17 | 2009-05-07 | Toyota Motor Corp | Control system |
JP5071222B2 (en) * | 2008-04-23 | 2012-11-14 | 村田機械株式会社 | Transport vehicle |
DE102009010775A1 (en) | 2009-02-26 | 2010-09-30 | Hydac Technology Gmbh | Hydraulic accumulator, hydraulic device with such a hydraulic accumulator and associated data transmission device |
-
2011
- 2011-05-05 DE DE102011100532A patent/DE102011100532A1/en not_active Withdrawn
-
2012
- 2012-04-07 JP JP2014508700A patent/JP6034370B2/en active Active
- 2012-04-07 WO PCT/EP2012/001559 patent/WO2012149994A1/en active Application Filing
- 2012-04-07 US US13/261,771 patent/US9279432B2/en active Active
- 2012-04-07 EP EP12715598.4A patent/EP2705257B1/en active Active
Non-Patent Citations (1)
Title |
---|
None * |
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JP2014517221A (en) | 2014-07-17 |
EP2705257A1 (en) | 2014-03-12 |
US20140060688A1 (en) | 2014-03-06 |
JP6034370B2 (en) | 2016-11-30 |
US9279432B2 (en) | 2016-03-08 |
DE102011100532A1 (en) | 2012-11-08 |
WO2012149994A1 (en) | 2012-11-08 |
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