EP2257490A1 - Procédé pour faire fonctionner un appareil de mesure disposé sur une machine de remplissage à carrousel rotative - Google Patents

Procédé pour faire fonctionner un appareil de mesure disposé sur une machine de remplissage à carrousel rotative

Info

Publication number
EP2257490A1
EP2257490A1 EP09725331A EP09725331A EP2257490A1 EP 2257490 A1 EP2257490 A1 EP 2257490A1 EP 09725331 A EP09725331 A EP 09725331A EP 09725331 A EP09725331 A EP 09725331A EP 2257490 A1 EP2257490 A1 EP 2257490A1
Authority
EP
European Patent Office
Prior art keywords
transducer
measuring tube
class
medium
primary signal
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
EP09725331A
Other languages
German (de)
English (en)
Other versions
EP2257490B1 (fr
Inventor
Jörg Herwig
Michael Kirst
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.)
Endress and Hauser Flowtec AG
Original Assignee
Endress and Hauser Flowtec AG
Flowtec AG
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 Endress and Hauser Flowtec AG, Flowtec AG filed Critical Endress and Hauser Flowtec AG
Publication of EP2257490A1 publication Critical patent/EP2257490A1/fr
Application granted granted Critical
Publication of EP2257490B1 publication Critical patent/EP2257490B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67C—CLEANING, FILLING WITH LIQUIDS OR SEMILIQUIDS, OR EMPTYING, OF BOTTLES, JARS, CANS, CASKS, BARRELS, OR SIMILAR CONTAINERS, NOT OTHERWISE PROVIDED FOR; FUNNELS
    • B67C3/00—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus; Filling casks or barrels with liquids or semiliquids
    • B67C3/02—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus
    • B67C3/20—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus with provision for metering the liquids to be introduced, e.g. when adding syrups
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67C—CLEANING, FILLING WITH LIQUIDS OR SEMILIQUIDS, OR EMPTYING, OF BOTTLES, JARS, CANS, CASKS, BARRELS, OR SIMILAR CONTAINERS, NOT OTHERWISE PROVIDED FOR; FUNNELS
    • B67C3/00—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus; Filling casks or barrels with liquids or semiliquids
    • B67C3/02—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus
    • B67C3/22—Details
    • B67C3/28—Flow-control devices, e.g. using valves
    • B67C3/287—Flow-control devices, e.g. using valves related to flow control using predetermined or real-time calculated parameters

Definitions

  • the invention relates to a method for operating a arranged on a rotating carousel filling machine, for example, the determination of a mass flow of a flowing medium serving and / or designed as a Corioiis mass flow meter, measuring instrument with a at least temporarily flowed through by medium transducer of the vibration type. Furthermore, the invention relates to a device suitable for realizing the method and / or designed as a carousel filling machine.
  • the containers to be filled with a batch of the respective medium such as a solvent, a paint or a paint, a detergent, a beverage, a drug or the like, for example, bottles, ampoules, jars, cans or the like , conveyed to each other via a corresponding supply system to the rotary filler.
  • the actual Filling operation takes place during a period in which the respective container is located within a filling point installed on the rotary filler below a filling tip dispensing the medium.
  • the containers leave the rotary filler and are automatically forwarded.
  • Typical throughput rates of such carousel filling machines can well be on the order of 20,000 containers per hour, whereby the actual filling cycle and, consequently, the actual measuring phase in which medium to be measured through the transducer flows from a few seconds to less than one second is to be set. This measuring phase before and accordingly also subsequently takes place in each case a standby phase of the transducer, in which no medium flows through the transducer or no medium is dispensed.
  • rotary fillers For precise determination of the actual volume of medium dispensed in each case, rotary fillers often use in-line measuring devices which measure the charge to be metered during the corresponding filling phase by means of directly measured and internally totalized flow rates of the medium, which are determined by one of the physical-electrical conversion of the medium is allowed to flow to be detected measured variable serving transducer of the meter, determine highly accurate and in real time and thus allow a correspondingly fast and accurate control of the filling process.
  • the measuring transducers each comprise at least one in a mostly closed transducer housing trained support frame mounted measuring tube with curved and / or straight pipe segment.
  • this tube segment is excited to oscillate during operation by means of an electromechanical exciter assembly to produce the measured quantities, such as a mass flow rate, corresponding to representative reaction forces.
  • transducers of the vibration type further each have a responsive to movements of the tube segment sensor arrangement.
  • Mass flow rate measuring Coriolis mass flow meters for example, the measurement of mass flow or a mass flow rate of a medium flowing in a pipe known that the medium to be measured through at least one tube inserted in the flow and at least partially laterally oscillating in operation to a Meßrohrachse measuring tube is left, thereby inducing Coriolis forces in the medium. These in turn cause the inlet side and ausiute pulpe areas of the measuring tube to oscillate out of phase with each other. The size of this phase shift serves as a measure of the mass flow.
  • the oscillations of the measuring tube are therefore detected by means of two along the measuring tube spaced-apart vibration sensors of the aforementioned sensor arrangement and converted into serving as primary signals of the transducer vibration measurement, from the mutual phase shift of the mass flow is derived.
  • US-A 41 87 721 further mentions that by means of such in-line measuring devices and the instantaneous density of the flowing medium is measurable, namely on the basis of a momentary and / or average frequency of at least one of the sensor array supplied Schwingungsmeßsignale.
  • a temperature of Medium measured in a suitable manner directly, for example by means of a at least one measuring tube arranged temperature sensor.
  • the transducer usually by an independent, commercially available in-line measuring device in compact design - ie accommodated in a corresponding electronics housing, the measuring operation and the communication with higher-level operating units, such as a process control, enabling internal Meßwandier electronics - is provided via inlet and outlet side, usually standardized Anschlußeiemente, such as screw caps or flanges, on a medium to be measured or a metered medium laxative Line segment of the operating medium in the leading piping system of the filling system connected accordingly. If necessary, in addition to the usually rigid line segments also serve additional holding devices of the fixation of the meter within the Rotationsglaliers. Usually they are
  • the transducers are arranged within the rotary faucet such that the imaginary flow axis of each of the measuring wall imaginarily connecting the two respective connecting elements and the axis of rotation of the rotary filler intersect at an angle of less than 90 ° or run substantially parallel to one another.
  • the meter electronics of commercially available in-line meters of the type in question usually have a digital readings in real time supplying microcomputer with corresponding volatile and non-volatile data storage for holding also internally determined and / or externally to the respective in-line -Mess réelle transmitted, for the safe flow of the filling process - if necessary, for a sustainable logging of the same - required digital measurement or operating data, such as a current angular velocity with which the rotary filler is currently operated and thus rotates the transducer around the axis of rotation.
  • One possible cause of such measurement inaccuracies of flow-measuring in-line meters may, as u.a. also in the aforementioned US-B 71 81 982, US-B 70 40 181, US-B 69 10 366, US-B 68 80 410, US-B 65 05 519, US-B 63 11 136 or US-A 54 00 657, for example be given by the fact that the medium to be measured is formed by process two or more phases, for example, as a gas and / or solid laden liquid, a! S granules or powder.
  • the measurement accuracy impaired under the above-mentioned circumstances is particularly due to a variable zero point of the measuring instrument concerned, that is to say the measured value supplied by the transducer electronics, for example the instantaneous mass flow rate or the totalized mass flow rate, is also one of the rotational speed dependent deviation.
  • vibration-type transducers have further been found to have predetermined measurement errors, such as may occasionally occur with conventional flow measurements on rotary fillers, such as the dead mass flow determination, also due to the fact that the detection of the oscillatory motion of the at least a measuring tube serving vibration sensors caused by the rotational movement of the transducer about the axis of rotation of the round filler additional
  • the invention consists in a method for operating a on a rotating carousel filling machine arranged, in particular the determination of a mass flow of a flowing medium serving and / or designed as a Coriolis Massen graspfmeußmeß réelle, measuring device with a at least temporarily medium-flowed by the vibration type Meßwandier, which method comprises the following steps:
  • the invention consists in a device which is suitable in particular for the implementation of the method and / or designed as a Karusseii-Ab hydroilmaschine, comprising: - at least a first transducer,
  • At least one transducer electronics for generating, in particular digital, measured values
  • the at least one moving around the axis of rotation of the measuring tube is flowed through during a, in particular periodically recurring, measuring phase of the first transducer of medium to be measured, and
  • the at least one transducer electronics at least temporarily, especially recurring, the one least a measured variable, esp
  • this further comprises a step of determining a correction value for the primary signal of the first class based on the primary signal! second class.
  • the at least one primary signal of the first class represents.
  • this further comprises a step of determining an angular velocity with which the at least one measuring tube of the measuring transducer through which the medium flows is moved about the rotary axis of the carousel filling machine.
  • This refinement of the method is further provided that the at least one measured value is determined taking into account the angular velocity.
  • the medium to be measured is temporarily prevented from flowing through the least a measuring tube of the transducer.
  • this further comprises a step of using the transducer, while it is not flowed through by medium to be measured in vibrating measuring tube, for generating also the at least one second-order primary signal.
  • this further comprises a step of filling a container placed on the outlet side of the transducer with a medium flowed through the at least one measuring tube.
  • this further comprises a step of using at least one other, but also not rotating around the axis of rotation of the carousel filling machine with at least one momentarily vibrating transducer flowed through to be measured medium, esp. For currently flowing through the medium to be measured measuring tube substantially identical, measuring tube for generating the at least one primary signal second class.
  • the transducer electronics based at least on the primary signal second class, esp. Recurring, at least determined a correction value for the primary signal first class.
  • This embodiment of the invention further provides that the at least one transducer electronics based on the correction value based on the first transducer, esp. Currently and / or during its measurement phase, delivered primary! first class determined.
  • the transducer electronics determine the measured value using both the primary signal of the first class delivered by the first transducer during its measuring phase and also using the correction value.
  • the correction value supplied by the transducer electronics corresponds to a measured, in particular instantaneous or average, flow rate, in particular a mass flow rate or a flow rate, which in the standby phase appears to pass through the transducer through-flowing medium represents.
  • the correction value supplied by the transducer electronics correlates with a momentary angular velocity with which the at least one measuring tube of the first transducer is arranged around the axis of rotation is moved, and / or an influence of the movement of the at least one measuring tube of the first transducer about the axis of rotation on primary signals supplied by the transducer, esp.
  • the primary signal supplied during the measuring phase first class currently represents.
  • the at least one correction value is determined before the measurement phase of the first Meßwandiers begins.
  • the at least one transducer electronics store the at least one correction value at least temporarily, in particular in a volatile data memory.
  • the at least one measured value delivered by the transducer electronics represents a, in particular instantaneous or totalized, mass flow rate of the medium actually flowing through the first measuring wall in the measuring phase.
  • the measuring transducer electronics at least temporarily a, esp. Recurrently determined and / or updated speed value holds, which represents a, esp. Current, angular velocity currently, with the at least one Measuring tube rotates about the axis of rotation.
  • the first transducer via an inlet-side first connection element, esp. A screw cap or a flange to a to be measured medium to leading line segment of a pipeline system is connected.
  • This embodiment of the invention further provides that the first transducer via an outlet-side second connection element, esp. A screw cap or a flange, is connected to a measured medium from leading line segment of Rohrieätungssystems.
  • the first transducer has an imaginary flow axis imaginarily connecting the two respective connectors, the first transducer being disposed within the device such that its imaginary flow axis and axis of rotation intersect at an angle of less than 90 °, or the imaginary flow axis of the first transducer to the axis of rotation is substantially parallel.
  • the at least one measuring tube in particular a pipe segment thereof which has been vibrated according to the operation, is at least partially substantially straight.
  • the at least one measuring tube in particular a tube segment thereof which has been vibrated according to its operation, is curved at least in sections.
  • the at least one transducer electronics is arranged in the immediate vicinity of the first transducer and / or is connected substantially rigidly thereto.
  • each of the transducers has an at least one measuring tube einhausendes transducer housing.
  • the at least one Meßwandier electronics is housed in an associated electronics housing.
  • This refinement of the invention further provides that the electronics housing, esp. Substantially rigid, is mounted on the transducer housing of the first transducer.
  • the device further comprises a control electronics for setting and monitoring an angular velocity with which the at least one measuring tube of the first transducer is moved about the axis of rotation.
  • the transducer electronics and the control electronics in operation, esp. Wirelessly communicate by radio, at least temporarily with each other.
  • the measuring transducer electronics can transmit measurement data, in particular a measured value and / or a correction value for the primary signal of the first class, to the control electronics at least temporarily, in particular recurrently, and / or can transmit the measuring transducer electronics in the Operation at least temporarily, especially recurring, generated by the control electronics control data, esp.
  • a current angular velocity with which the at least one measuring tube of the first transducer is moved about the axis of rotation receive.
  • the measuring transducer electronics at least temporarily generate a, in particular digitally and / or externally, the measuring-transducer electronics during operation, Speed value holds, which currently represents an angular velocity with which the at least one measuring tube of the first transducer is moved about the axis of rotation.
  • Speed value holds, which currently represents an angular velocity with which the at least one measuring tube of the first transducer is moved about the axis of rotation.
  • This refinement of the invention further provides for the measuring wall to derive the at least one measured value and / or the correction value for the at least one primary signal. first class using the speed value determined.
  • the first transducer also supplies the second-order primary signal.
  • This refinement of the invention further provides that the first transducer generates the second-class primary signal during a periodically repeating standby phase in which the at least one measuring tube of the first transducer is not flowed through by the medium to be measured.
  • the Meßwandler- electronics the at least one measured value based both on the primary signal supplied by the first transducer during its measurement phase first class and based on the supplied from the first Meßwandier during its standby phase primary! second class.
  • the first transducer is a vibration type transducer in which transducer the at least one measuring tube is vibrated at least temporarily to generate vibration measuring signals for generating primary signals.
  • the at least one measuring tube of the first measuring transducer flows through medium to be measured during its measuring phase and for the purpose of generating at least one aperture Primärsigna! vibrating the first class serving vibration of the at least one measuring tube representing the first Schwingungsmeßsignals is vibrated.
  • the generation of at least one primary signal second class serving measuring tube, esp. That of the first transducer also vibrate and serves as a primary signal of the second class a vibration same measuring tube representing second Schwingungsmeßsignals.
  • the at least one transducer electronics determines based on the primary signal of the first class delivered by the first transducer during its measurement phase and based on the primary signal of the second class
  • Difference value which is a difference between a, in particular instantaneous or average, oscillation frequency, with which the at least one measuring tube of the first transducer is vibrated during its measuring phase, and one, esp. Average, oscillation frequency, with which the at least one of the generation of the primary signal second-class measuring tube is vibrated represented.
  • the first Meßwandier provides during its measurement phase a first primary signal of the first class, which represents einlcredseitäge vibrations of at least one measuring tube, and wherein the first transducer, esp. At the same time as the first primary signal, at least provides a second primary signal of the first class, which represents outlet-side vibrations of the at least one measuring tube. In particular, this determines the at least one transducer transducer electronics based on the first and second supplied by the first transducer during its measurement phase
  • First class primary signal further determines a phase difference between inlet and outlet side vibrations of the at least one measuring tube corresponding to a mass flow rate of the medium flowing in the at least one measuring tube.
  • at least one transducer electronics further determines the at least one, esp Mass flow rate of the flowing in at least one measuring tube of the first transducer medium currently representing, measured value based on the phase difference.
  • the at least one measuring tube of the first measuring transducer is vibrated during the standby phase of the first measuring transducer in order to generate the at least one second-order primary signal.
  • the first transducer during its standby phase, provides a second second class primary signal representative of inlet side vibrations of the at least one measuring tube during the standby phase the first transducer, especially at the same time as the first primary signal of the second class, supplies at least a second primary signal of the second class which represents outlet-side vibrations of the at least one measuring tube during the standby phase.
  • the at least one transducer electronics determines the at least one measured value based on a, in particular instantaneous or average, oscillation frequency corresponding to a density of the medium guided in the at least one measuring tube the at least one measuring tube is allowed to vibrate during operation of the first measuring transducer, in particular during its measuring phase. Further, it is provided here that the at least one transducer electronics determines the oscillation frequency with which the at least one measuring tube of the first transducer is vibrated during its measuring phase, based on the primary signal of the first class.
  • the at least one transducer electronics the at least one measured value based on a with a Density of the guided in at least one measuring tube medium corresponding, esp. Momentary or average, vibration frequency generated with which the at least one measuring tube of the first Meßwandiers is vibrated during its standby phase. Further, it is provided here that the at least one transducer electronics determines the oscillation frequency with which the at least one measuring tube of the first transducer is vibrated during its standby phase, based on the PrimärsignaJs second class.
  • the first transducer is a magnetic-inductive type transducer in which transducers the at least one measuring tube for generating voltage measuring signals serving as primary signals is at least temporarily, especially during the measuring phase, by a magnetic field permeated and induced voltages in the medium by means of at least two, in particular galvanic and / or capacitive coupled to the medium, electrodes are tapped.
  • Second Meßwandier comprises. According to a first development of the twentieth embodiment of
  • the second transducer has at least one at least temporarily not flowed through by medium measuring tube, which is also moved in operation about the axis of rotation, and that the second
  • Transducer at least temporarily delivers primary signals corresponding to at least one measured variable of at least one measuring tube guided medium. According to a second development of the twentieth embodiment of the invention, it is further provided that the at least one measuring tube of the second measuring transducer which is moved about the axis of rotation is not flowed through by medium during a periodically repeating, standby phase of the second measuring transducer.
  • the second-class primary signal is generated by the second measuring transducer during its standby phase.
  • the transducer electronics generate the at least one measured value based both on the primary signal of the first class delivered by the first transducer during its measuring phase and second on the primary signal delivered by the second transducer during its standby phase Class determined.
  • the second measuring transducer also supplies at least one primary signal of first class during a measuring phase in which the measuring tube of medium to be measured flows, in particular periodically recurring, with a measured variable of the medium flowing in the associated at least one measuring tube corresponds.
  • the measuring tube of the primary signal! second-class generating transducer while the standby phase is at least partially beheüt with substantially the same medium, which is allowed to flow in at least one measuring tube of the primary signal generating the first class transducer during its measuring phase.
  • This embodiment of the invention further provides that the at least one measuring tube of the primary signal! second-class transducer during its standby phase only is partially filled with substantially the same medium, which is allowed to flow in at least one measuring tube of the primary signal generating the first-class transducer during the measuring phase.
  • the at least one measuring tube of the second-class primary signal generating transducer during its standby phase is at least partially beheilt with another medium, as in at least one measuring tube of the primary signal first class generating transducer during its measuring phase is allowed to flow.
  • the at least one measuring tube of the second-class primary signal generating transducer during its
  • a start time, at which the standby phase of the second-class primary signal generating transducer begins is timed before a start time at which the measurement phase of the primary signal of the first Kiasse generating transducer begins.
  • a stop time at which the standby phase of the primary signal! second class generating transducer ends is placed in time before a stop time at which the measurement phase of the primary signal first class generating transducer ends.
  • This embodiment of the invention further provides that the stop time at which the Standby phase of the second-class primary signal generating transducer ends, is placed in time before the start time at which begins the measurement phase of the primary signal generating first-class transducer.
  • the correction value provided by the transducer electronics corresponds to a measured, especially instantaneous or average, measured flow rate, in particular a mass flow rate or a volumetric flow rate, which in the standby phase apparently represents medium flowing through the transducer.
  • the device further comprises at least one valve which adjusts a flow through the at least one measuring tube of the measuring transducer, especially on the outlet side of the first measuring transducer.
  • the at least one valve by means of at least one transducer electronics, esp. Using the at least one measured value, is controlled, and / or that the at least one transducer electronics, the at least one valve, esp. using the at least one second-class primary signal and / or a correction value derived therefrom for the at least one primary signal! first class, supervised, in particular with regard to a closing behavior thereof.
  • the device comprises a plurality of, in particular to the first transducer construction and functionally identical, transducers, each of which at least one, esp. Along an imaginary common circumferential circle of the at least one measuring tube of first transducer having spaced arranged, also each having moved about the axis of rotation measuring tube.
  • each of the transducers at least temporarily supplies Primärsägnaie corresponding to at least one measured variable of the guided in at least one associated measuring tube medium, and / or that the at least one moving around the axis of the measuring tube each the Meßwandier during a, esp. Periodically recurring, measuring phase of the karoniaigen transducer is flowed through by the medium to be measured.
  • several of the transducers at the same time, supply primary signals of first class, each corresponding to the at least one to be detected measurement of the guided in at least one associated measuring tube medium.
  • Embodiment of the invention is further provided that the at least one moving around the axis of rotation measuring tube of each of the transducers during a, esp. Periodically recurring, standby phase of the kar culinaryigen transducer is not flowed through by medium.
  • a plurality of the transducers during a respective standby phase supply second-class primary signals which correspond to at least one measured variable of the medium guided in the at least one associated measuring tube.
  • a plurality of the transducers deliver second-class primary signals at the same time.
  • each of the transducers each have a associated, especially in each case housed in a separate electronics housing, transducer electronics has.
  • At least two of the transducer electronics are in operation, in particular wirelessly and / or connection-bound, with each other, in particular transmitting and / or receiving measured values and / or correction values for by means of transducers transmitting and / or receiving generated primary signals.
  • a basic idea of the invention is, in the current operation of Rotationsyogüern the actual extent of the interference affecting the measurement due to the rotational movement of the Rotationsyogilers, such as speed-dependent acceleration forces on the during a defined by the actual metering measuring phase and thus both the information about the actually to be detected measured variable, such as the mass flow rate and / or the totaiinstrumenten mass flow, as well as on the disturbance-carrying primary signals of rotating in the above sense transducers characterized in that in addition one with the same and / or an equally moving other, but the same type, esp. identical construction and function, Meßwandier generated during a standby phase further primary signal is evaluated or used for the actual measurement.
  • the transducer due to the Prozeßabfauf, during the standby phase while exposed to substantially the same disorder as at times of the previous and / or next measurement phase, but not known to flow through the medium, so that generated at times of standby phase Primary signals represents only the interference to be compensated, For example, inform a Sirifiußrate that suggests in the standby phase seemingly flowing through the transducer medium.
  • the invention makes use of the special condition caused by filling process, that in a phase of circulation, in which the flow rate - due to known closed AbglalSventile and / or due to known deflated measuring tubes - is equal to zero and so far defined, so that in the corresponding standby phase the transducer then, in the case of vibration-type transducers, for example, based on a further vibrated measuring tube, generated primary signal actually should signal no flowing medium or based on this primary signal based flow rates should actually be zero.
  • the currently detected for the meter or its transducer by appropriate measurements during its standby zero point can, depending on the computational speed of the participating Meßwandfer electronics, recognized in one of the next measurement phases of the corresponding transducer and thus after a correspondingly timely performed zero adjustment in the flow measurement for the further dosing may be taken into account accordingly and, where appropriate, also in a filling balance prepared over a longer period of time.
  • the currently determined zero point or measuring error or a correspondingly compensating correction factor can already be used to correct the error in a subsequent correction Measurement to be taken into account, which in one of the next filling phases of the rotary filler by means of another, soon so from its standby phase in the measuring phase ü transferred transducer is performed.
  • a corresponding alarm may also be triggered, if necessary, of a faulty rotary filler, for example due to a leaked valve and / or a defective transducer, and / or a faulty filling process, for example due to media properties deviating from corresponding quality specifications, suitably signaled.
  • a faulty rotary filler for example due to a leaked valve and / or a defective transducer
  • a faulty filling process for example due to media properties deviating from corresponding quality specifications, suitably signaled.
  • Fig. 1 is a schematic plan view of a Karusseli-Ab hypoxiamaschine
  • FIG. 2 is a schematic view of a filling point of a carousel
  • Fig. 1 is a schematic plan view of a sequential filling of containers, such as bottles, cups, ampoules or the like, each with a defined amount of, esp. At least proportionately or predominantly liquid medium serving carousel filling machine RF shown.
  • Medium may be virtually any flowable, meterable substance, such as a low viscosity or pasty liquid or e.g. also a granulate, a powder, be.
  • the carousel filling machine RF comprises a - here designed as a rotor - carousel K, on which along a circumference evenly distributed a plurality of substantially construction and functionally identical, esp. Same, filling AS1 - ASn is arranged.
  • the filling stations run during operation of the carousel Abcutnmaschine when driving the carousel K about a central axis of rotation DA on a defined by the carousel K and the arrangement of the corresponding filling points defined - in this case circular - orbit, with at least over a period of several revolutions kept substantially constant angular velocity.
  • the containers to be filled are sequentially, via a, for example by means of a conveyor belt and a so-called infeed star formed Zu intelligencesystem to the carousel K or to the respectively assigned filling point in a suitable manner! to hand over.
  • Each of the containers is filled during a bottling phase of the respective filling station marking the actual filling process, while the medium is allowed to flow into the assigned container until a previously defined filling quantity has been reached.
  • each of the containers is taken over by a, for example by means of a so-called outlet star and a discharge conveyor, discharge system, optionally also already suitably closed, and handed over to the next station for further treatment.
  • the carousel filling machine has inrangsbeispie shown here! 17 of such moved about the axis of rotation DA filling points A1 - An on, of which in Fig. 2 representatively a first filling A1 with a first transducer MW1 the carousel filling machine and placed below it, currently to be filled container FL and a second filling station A2 with a to the first transducer substantially structurally and functionally identical second transducer MW2 the carousel filling machine, but without container, are shown in a schematic side view. In the situation shown in Fig.
  • each of the filling stations of the carousel filling machine comprises, in addition to the respective measuring transducer MW1 temporarily flowed through by medium, a valve V arranged on the outlet side of the respective transducer and a filling tip FSP connected thereto.
  • the transducer MW1 itself has at least one in the course of the pipeline used, extending between an inlet of the transducer for inflowing medium and an outlet of the transducer for outflowing medium measuring tube MR1, which corresponds to the rotary axis DA during operation of the carousel filling machine RF - here circularly circulating and predominantly with an essentially constant held angular velocity - is moved, and by the process-related process is only temporarily allowed to flow through the medium to be measured.
  • valve V shown in Fig. 2 serving as an outlet valve can be provided in the filling parts in each case an inlet side of the respective Meßwandiers - so far serving as an inlet valve - whereby, for example, also emptying of the respective transducer outside the associated measurement phase or during its standby phase can be made possible.
  • the container FL to be filled is held below its filling tip FSP during the filling phase of the assigned filling point A1.
  • the container FL is guided on a turntable DT of the carousel K and, if necessary, during which HAT by an additional Hait für, for example, on the possibly existing bottleneck be fixed.
  • the current level in the container FL is indicated by a wavy line.
  • the medium to be filled into the container FL is supplied via the pipe RL from the reservoir.
  • the at least one measuring tube MR1 of the transducer MW1 is further housed in a protective transducer housing of the Meßwandier and may itself be at least partially substantially straight and / or at least partially curved.
  • a protective transducer housing of the Meßwandier On the inlet side, the at least one measuring tube and insofar the associated transducer MW via a medium feeding line segment RL a piping system with the medium suitable vorhaltenden - not shown here - reservoir, such as a tank connected, optionally with the interposition of said inlet valve.
  • a piping system with the medium suitable vorhaltenden - not shown here - reservoir such as a tank connected, optionally with the interposition of said inlet valve.
  • the connection to the outlet valve V and the filling tip FSP realizing line segment In the embodiment shown here is also the outlet side another, the connection to the outlet valve V and the filling tip FSP realizing line segment provided.
  • the connection of the transducer to the line segments can be done in
  • the transducers if necessary, also be disposed within the carousel filling machine RF such that the imaginary flow axis of each of the transducers imaginarily connecting the two respective connecting elements and the rotary axis of the carousel filling machine intersect at an angle of less than 90 °.
  • the transducer MW1 is further electrically connected to at least one first transducer electronics ME1, which represents the operation of the transducer as well as the generation of the first transducer electronics ME1 which represents the at least one measured variable, especially digital measurements. Accordingly, in the situation shown in FIG. 2, the quantity already filled or still to be filled by the medium into the container BL can be determined directly on site by means of the measuring electronics ME1 connected to the measuring transducer MW1 currently in the measuring phase.
  • transducer electronics ME1 and the transducer MW1 can - as shown schematically in Fig. 2 and quite common for such filling stations - to one, for example, designed as an in-line meter in compact design, independent Measuring system combined CDM1 be, in which the transducer electronics ME1 is housed in an outside of the transducer, for example, at the possibly existing transducer housing, suitably fixed electronics housing. To hold the electronics housing on the transducer housing this may for example have a corresponding connection piece with inserted therein cable entry for the electrical connection of the transducer electronics to the transducer serving connection lines.
  • the transducer electronics MW1 is also designed so that they are connected to a fieldbus system and
  • a higher-level electronic data transmission and data processing system such as a carousel-filling machine controlling programmable logic controller or a plant-wide process control system PL, can be integrated.
  • a higher-level electronic data transmission and data processing system such as a carousel-filling machine controlling programmable logic controller or a plant-wide process control system PL, can be integrated.
  • a higher-level electronic data transmission and data processing system such as a carousel-filling machine controlling programmable logic controller or a plant-wide process control system PL.
  • an external power supply serving for feeding the transducer electronics can also be connected to the fieldbus system in order to supply the measuring system with energy directly, in particular in the manner known to those skilled in the art, via the fieldbus system.
  • Measuring system CMD2 a corresponding, for the first transducer electronics ME1 essentially construction and functionally identical second Meßwandler- electronics ME2 connected.
  • each of the transducers in the individual filling points each has an associated - also housed here in a separate electronics housing - transducer electronics, according to an embodiment of the invention further provided that at least two of the Meßwandler- Electronics in operation - wirelessly by radio and / or wired - communicate with each other.
  • the transducer electronics of two currently each in a standby phase operated transducers internally stored measurements and / or corresponding internal correction values for the future generated by means of the transducer primary signals send or receive.
  • the carousel filling machine RF esp.
  • the speed at which the filling points are moved about the axis of rotation DA, and / or the respective start times at which the individual filling phases of the filling points are started and, consequently, the respective start times to which the Measuring phases of the respectively associated transducers are started is controlled and / or monitored according to an embodiment of the invention with the aid of a, for example, designed as a programmable logic control, measured values processing higher-level control electronics PLC.
  • the - for example, modular control PLC can both, at least proportionally, be arranged on the carousel K and, at least partially, outside thereof.
  • the control electronics PLC is advantageously also electrically connected to the respective transducer electronics of the filling points via corresponding signal lines SL, possibly also with the interposition of corresponding sliding ring contacts.
  • control electronics PLC and transducer electronics can also communicate wirelessly with each other wirelessly.
  • Messwandier electronics also control commands - wirelessly via wireless and / or wired - sends directly to the at least one valve of the respective associated filling point.
  • the control electronics PLC is connected according to another embodiment of the invention with a rotation rate sensor DS, which is arranged in the embodiment shown at the edge of the turntable DT, and detects the rotational movement of the carousel K. , For example, optically or inductively, and the recurring a currently measured speed of the Carousels representing, especially digital, speed value generated and provides for the control electronics PLC.
  • transducer - whether he is of the vibration type or of the magnetic-inductive type - at least temporarily generated a primary signal or two or more primary signals si, S 2 , for example inform of respect Amplitude and / or frequency variable voltages, with at least one suitable for the control of the filling process physical quantity, such as a flow rate, a mass flow m, Voiumen graspfiuß v and possibly also with a density p and / or a viscosity ⁇ , located in the measuring tube Medium correspond, and by the respective transducer electronics, esp. During the filling phase of the associated filling point, are converted into the corresponding measured values.
  • the at least one Primärsägnals serve arranged on the measuring tube and / or in its vicinity sensor arrangement of the Meßwandiers, which responds to changes of at least one physical variable in a corresponding at least one primary signal influencing manner, the changes by means of a measuring tube and / or arranged in the vicinity thereof, depending on the type of transducer used, for example, electromechanical or electro-magnetic, exciter arrangement of the transducer are induced.
  • the at least one measuring tube for generating voltage measurement signals serving as primary signals is at least temporarily penetrated by a magnetic field in a manner known to those skilled in the art, and is incorporated herein by reference the voltage known in the art tapped in the medium induced voltages by means of at least two, for example, galvanically and / or capacitively coupled to the medium, electrodes.
  • the primary signals are known to be vibration measuring signals which are out of phase with one another due to mass flow dependent Coriolis forces in the flowing medium Vibrations of the at least one, during operation at least temporarily vibrate let measuring tube of the respective transducer represent.
  • the Meßwandler- electronics updated - possibly in interaction with at least one of the other transducer electronics and / or in Caribbeanspie! with the control electronics PLC - in operation recurrently required for the Abdos réelle the given amount of filling in the currently located in the container filling point X M , such as a flow rate in the momentarily flowing through the medium to be measured transducer or based thereon a totalized flow, the ultimately represents the amount actually admitted so far in the container, or optionally also a density of the medium.
  • the control electronics PLC starts the filling process at each of the filling stations by opening the respective valve and thus defines the beginning of the filling phases of the filling points and, to that extent, the starting time of the measuring phases or the stopping time of the standby phases of the individual measuring transducers.
  • the transducer electronics determine - possibly in conjunction with at least one of the other transducer electronics - and / or the connected control electronics PLC based on the at least one updated measured value X M one the reaching of the filling amount present for the momentarily present in the filling container FL, the end of the current filling phase of the filling point and, concomitantly, the end of the current measuring phase of the associated transducer defining stop time.
  • the corresponding stop command or the corresponding closing signal for the valve V which ultimately prevents the medium to be measured again, to flow through the least one measuring tube of the transducer can, for example, be passed directly from the transducer electronics ME1 by means of Schaitausgang to the valve V.
  • the closing signal for the valve V can be transmitted directly from control electronics PLC via signal line SL to the valve V, see. for this purpose, for example, the aforementioned WO-A 04/049641.
  • the transducer electronics XM not only based on the at least one supplied by the transducer during the measuring phase primary signal - hereinafter referred to as primary signal first class determined - but also based on at least one - in the other than Secondary class primary signal - primary signal generated by one of the transducers installed on the carousel filling machine and thus also revolving around the axis of rotation DA during one of its repeating standby phases.
  • the second-class primary signal likewise used to determine the respective measured value X M thus corresponds to such a primary signal which is generated by means of a measuring transducer which is likewise moving about the axis of rotation but whose at least one measuring tube does not belong to the medium of the same primary signal of the second class at the time of generation is flowed through.
  • primary signal first class are used in the event that the transducers, as already mentioned, each designed as a transducer of the vibration type, one or more Schwingungsmeßsignale, each of which, esp. On and outlet side detected, vibrations of the moment - ie in the respective measuring phase of the associated transducer - represented by medium to be measured flows through at least one measuring tube.
  • the correction value XK can be determined, for example, by using the second-order primary signal after the same
  • Measurement methods such as those used conventionally on the basis of primary signals of the first class, ie without taking into account the influences on the primary signals of the first class associated with the rotary motion of the carousel filling machine and / or changes in its rotational speed, have been used to generate preliminary measured values X ' M is, a corresponding Hilfsmeßwert X' ⁇ is determined.
  • the extent to which the provisional measured value X ' M practically the same auxiliary measurement value X' ⁇ then corresponds to the error component to be corrected, which is contained as a result of the rotational movement of the carousel filling machine and the associated movement of the respective transducer in the primary signal first class.
  • the Hilfsmeßwert X ' ⁇ also represents a momentary displacement of the zero point of the measuring device formed by the corresponding transducer and the associated transducer electronics against an initial zero, which has been determined, for example, in a corresponding calibration of the measuring system with known medium under reference conditions.
  • the measured value X M represents a momentary or optionally also an average flow rate, for example a mass flow rate or a volume flow rate
  • the Hiifsmeßwert X ' ⁇ essentially corresponds to a measured instantaneous or average flow rate, which in the standby phase represents medium apparently flowing through the transducer.
  • the value represented by the Hiifsmeßwert X 1 "apparent flow can thereby be provoked during the guided in the measuring tube medium for example due to speed changes and consequent accelerations or deviations of the rotational speed of a corresponding set value and / or as a result of the rising gas bubbles.
  • the Hiifsmeßwert X' ⁇ can be very easily converted into the corresponding correction value XK and taken into account in the determination of the actual measured value X M , for example, by correct addition to an initially generated only by means of the primary signal first class provisional measured value, Accordingly the measured value can be determined in a simple manner according to the following relationship:
  • the primary signal of the second class is used to determine the actual measured value insofar as at least one correction value determined based on the second-class primary signal or a first detected first-order primary signal, for example in one digital volatile data memory of the respective transducer electronics and / or in a digital data memory of the control electronics PLC, and in determining the current reading is allowed to flow into the result accordingly.
  • the Meßwandler- electronics in operation at least temporarily, especially recurring, measurement data, for example, a measured value determined in a measuring phase and / or an auxiliary measured value determined in a standby phase and / or a corresponding correction value for the primary signal first class , to the control electronics sends.
  • the correction value determined in the aforementioned manner is very strongly correlated with a momentary angular velocity with which the at least one flowed through by measuring medium of the measuring transducer is moved about the axis of rotation of the carousel-filling machine, in such a way that the amount of the correction value X ⁇ increases with increasing speed.
  • the determination of flow rates based on one or more second-order primary signals can thus also serve as a measure of the current speed of the carousel filling machine and can also be taken into account in the control electronics in the speed control.
  • The, for example, non-volatile, stored speed value can also be generated externally of the Meßwandler- electronics, for example Mitteis the control electronics and / or by means of the aforementioned rotation rate sensor DS.
  • the control data representing the rotational speed of the carousel K is taken into account in good time, if possible before the start of a measuring phase, to the transducers associated with the respective transducers. Electronics transmitted.
  • some of the determined operating correction value X ⁇ can also be used to monitor the carousel filling machine, for example by the fact that excessively high within the electronic control system deviation of one or more of such correction value XK against advance correspondingly defined reference values are detected.
  • an appropriate, for example, a defective filling point may be generated, for example due to a faulty closing valve, a defective medium and / or a faulty measuring system signaling alarm, for example, on site and / or in a remote control room is displayed.

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Abstract

D'après le procédé selon l'invention, au moins un signal de mesure de vibrations servant de signal primaire de première catégorie et représentant les vibrations du tube de mesure (MR) traversé momentanément par le fluide à mesurer, ainsi qu'au moins un signal de mesure de vibrations servant de signal primaire de seconde catégorie et représentant les vibrations d'au moins un tube de mesure (MR), en particulier du convertisseur de mesure (MW), qui tourne autour de l'axe de rotation (DA) de la machine de remplissage à carrousel (RF) et n'est pas traversé par le fluide, sont générés. Au moins une valeur de mesure représentant une grandeur de mesure du fluide à mesurer, en particulier un débit massique et/ou un écoulement massique totalisé et/ou une densité du fluide à mesurer, est générée d'après le signal primaire de première catégorie et le signal primaire de seconde catégorie. L'invention concerne en outre un dispositif permettant de mettre en oeuvre ce procédé et/ou se présentant sous la forme d'une machine de remplissage à carrousel (RF).
EP09725331A 2008-03-27 2009-03-26 Procédé pour faire fonctionner un appareil de mesure disposé sur une machine de remplissage à carrousel rotative et appareil de mesure Active EP2257490B1 (fr)

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DE102008016235A DE102008016235A1 (de) 2008-03-27 2008-03-27 Verfahren zum Betreiben eines auf einer rotierenden Karussell-Abfüllmachine angeordneten Meßgeräts
PCT/EP2009/053626 WO2009118394A1 (fr) 2008-03-27 2009-03-26 Procédé pour faire fonctionner un appareil de mesure disposé sur une machine de remplissage à carrousel rotative

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US20090249890A1 (en) 2009-10-08
DE102008016235A1 (de) 2009-10-01
US7856891B2 (en) 2010-12-28
WO2009118394A1 (fr) 2009-10-01
EP2257490B1 (fr) 2012-06-27

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