EP3725734B1 - Procédé et appareil pour remplir un récipient - Google Patents

Procédé et appareil pour remplir un récipient Download PDF

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Publication number
EP3725734B1
EP3725734B1 EP19305503.5A EP19305503A EP3725734B1 EP 3725734 B1 EP3725734 B1 EP 3725734B1 EP 19305503 A EP19305503 A EP 19305503A EP 3725734 B1 EP3725734 B1 EP 3725734B1
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EP
European Patent Office
Prior art keywords
values
flow rate
current value
relation
pressure
Prior art date
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Not-in-force
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EP19305503.5A
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German (de)
English (en)
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EP3725734A1 (fr
Inventor
Stefano d'Errico
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.)
Sidel Participations SAS
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Sidel Participations SAS
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Priority to EP19305503.5A priority Critical patent/EP3725734B1/fr
Priority to PCT/EP2020/056627 priority patent/WO2020212029A1/fr
Publication of EP3725734A1 publication Critical patent/EP3725734A1/fr
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Publication of EP3725734B1 publication Critical patent/EP3725734B1/fr
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    • 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
    • B67C3/007—Applications of control, warning or safety devices in filling machinery
    • 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
    • B67C3/286—Flow-control devices, e.g. using valves related to flow rate control, i.e. controlling slow and fast filling phases
    • 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 present invention relates to a method and an apparatus for filling containers, for example bottles or the like, with a pourable product.
  • Filling machines are known, essentially comprising a carousel rotating around a vertical axis, a tank containing the pourable product, and a plurality of filling apparatus peripherally carried by the carousel, connected to the tank by means of respective circuits or ducts and conveyed from the carousel itself along a circular transfer path.
  • Each filling apparatus essentially comprises:
  • modulating filling valves of the known type essentially comprise:
  • the tubular body has a longitudinal axis parallel to the axis of the carousel and ends at a lower end with an axial outlet opening fluidically communicating, in use, with an end opening defined by an upper edge of the respective container to be filled.
  • the channel defined by the tubular body comprises a stretch having a constant section, usually cylindrical, and a stretch with variable section, positioned above the outlet opening and narrowing in the direction of the latter, up to a minimum-diameter section.
  • the shutter is movable within the channel of the tubular body in a plurality of positions ranging between a position of maximum closure, wherein the shutter closes in a sealed manner the minimum-diameter section, in order to interrupt the flow of the pourable product towards the outlet opening, and a position of maximum aperture, wherein the shutter delimits together with the minimum-diameter section, an annular outflow passage of maximum aperture fluidically communicating with the outlet opening, so as to allow the flow of the pourable product towards the end opening of the respective container.
  • the shutter is movable between the position of maximum closure and the position of maximum aperture through a plurality of intermediate opening positions, defining with the minimum-diameter section respective intermediate annular outflow passages with increasing dimensions.
  • the modulating filling valves comprise an actuator, typically of the electromagnetic type.
  • the actuator comprises a coil arranged inside the tubular body and magnetically coupled to one or more permanent magnets appropriately included in the shutter.
  • the aforementioned filling apparatus further comprise a flow rate sensor, preferably a flowmeter, configured for measuring the flow rate of the pourable product passing through the channel of the tubular body and for generating a correlated flow rate signal, and a position sensor configured for measuring the position of the shutter inside the channel and for generating a correlated position signal.
  • the filling apparatus of the known type furthermore comprise, a control unit configured for receiving the aforementioned flow rate and position signals and for controlling the movement of the shutter as a function of said flow rate and position signals.
  • the coil of the actuator receives, in use, a command signal from the control unit and produces, according to a known mode of operation typical of the coils, a corresponding magnetic field adapted to move the shutter by means of magnetic interaction with the permanent magnets included in the shutter itself.
  • the applicant has observed that the measurement of the above-mentioned flow rate obtained by means of a flowmeter, is particularly inefficient for controlling the opening of the modulating valves currently in use in the field, since the output rates of the flow rate signals generated by the known flowmeters are at least an order of magnitude greater than process times of current control units.
  • the known flowmeters output flow rate samples with time periods of approximately 50 milliseconds, whereas the control unit can update the command signal for the modulating valve with a rate of approximately 0.5 milliseconds. Therefore, an individual modulating filling valve receives the updated command signal from the control unit with a considerable delay, due to the slowness of the flow rate measurements.
  • the aim of the present invention is to provide a method and an apparatus for filling a container that allow overcoming the aforementioned drawbacks, related to the known apparatus, in a simple and economic manner.
  • this aim is achieved by a method and an apparatus for filling a container, as defined in the appended set of claims.
  • number 1 indicates as a whole, an apparatus for filling, to a predetermined level, a respective container 2 with a pourable product, for example still water.
  • the apparatus 1 is connected, in a fluidic manner and by means of a duct 4, to a tank 3 (only partially illustrated) containing the pourable product.
  • the apparatus 1 comprises a filling valve 5 of the modulating type, which can be selectively activated to control the outflow of the pourable product towards the container 2 to be filled.
  • the container 2 is positioned below and spaced from the valve 5, in order to receive from the latter, the pourable product by the action of gravity.
  • the apparatus 1 is configured for carrying out a "contactless filling operation".
  • the container 2 may be supported in fluid tight contact against the corresponding valve 5, so that a "contact filling operation" may be carried out.
  • the valve 5 essentially comprises:
  • the tubular body 6 has an upper end portion 9 provided with an inlet opening 10 axially configured to receive the pourable product from the tank 3 through the duct 4, an intermediate portion 11, and a lower end portion 12 ending with an outlet opening 13 axially configured for feeding the pourable product into the respective container2.
  • the channel 7 comprises, at the lower end portion 12 of the tubular body 6, a portion with variable section 14 having two frustum conical stretches 15, 16.
  • the stretch 15 is positioned upstream of the stretch 16 in respect to the feeding direction of the pourable product inside the channel 7, namely arranged superiorly with respect to the stretch 16 itself, and has a section tapering towards the latter; the stretch 16 instead has a diameter increasing from the stretch 15 up to the outlet opening 13. Therefore, the two stretches 15, 16 define between one another, a narrowed section 17, namely a minimum-diameter section.
  • the shutter 8 is axially fitted within the channel 7 of the tubular body 6.
  • the shutter 8 comprises an upper end portion 18, an intermediate portion 19, having a diameter greater than the diameter of the upper portion 18 and axially extending therefrom in the direction of the outlet opening 13, and a shaped terminal portion 20, configured for cooperating with the portion of the tubular body 6 defining the portion with variable section 14 of the channel 7.
  • the terminal portion 20 is provided with a sealing ring 21, preferably an O-ring made in elastomeric material, configured for selectively cooperating in a fluid-tight manner with the narrowed section 17 of the channel 7, in order to prevent or enable the outflow of the pourable product towards the outlet opening 13 and, therefore, into the container 2 to be filled.
  • a sealing ring 21 preferably an O-ring made in elastomeric material, configured for selectively cooperating in a fluid-tight manner with the narrowed section 17 of the channel 7, in order to prevent or enable the outflow of the pourable product towards the outlet opening 13 and, therefore, into the container 2 to be filled.
  • the shutter 8 is movable within the channel 7 of the tubular body 6 through a plurality of positions ranging, in particular, between:
  • the shutter 8 is movable, between the aforementioned positions of closure and maximum aperture, through a plurality of intermediate opening positions, which are virtually unlimited and define respective intermediate outflow annular passages with gradually increasing openings, as the shutter 8 proceeds from the position of closure to the position of maximum aperture.
  • the shutter 8 delimits with the narrowed section 17 an outflow passage with variable dimension adapted to control the filling speed of the container 2.
  • the valve 5 comprises an actuator 22, preferably of the electromagnetic type.
  • the actuator 22 comprises a coil 23 arranged around channel 7 at the intermediate portion 11 of the tubular body 6 and configured to be magnetically coupled to one or more permanent magnets 24 appropriately included in the intermediate portion 19 of the shutter 8.
  • the apparatus 1 further comprises:
  • both the position signal L and the pressure signal P may consist of respective time series of values, in particular according to a given sampling frequency, wherein each value of the position signal L is associated to a relative value of the pressure signal P.
  • the pressure sensor 28 may detect a single value to form the pressure signal P, wherein such a single value is associated to each of the values forming the position signal L.
  • the position sensor 26 is arranged at the upper portion 18 of the shutter 8.
  • Control unit 27 comprises a memory portion 27a storing a first relation between values of the quantity measurable through the pressure sensor 28 and respective values of a reference flow rate of the pourable product, which flows through the valve 5 when the shutter 8 is at a given reference position.
  • control unit 27 is provided with prior information about the specific influence that pressure has on the flow rate flowing through the valve 5 for a given constant reference position of the shutter 8.
  • the reference position may be any one of the infinite intermediate opening positions of the shutter 8 or, possibly, the position of maximum opening. Such a reference position, preferably, is stored in the memory portion 27a.
  • the above first relation is based on a two-dimensional table T1 ( Figure 1 ), which is preferably stored in the memory portion 27a and contains a plurality of flow rate values that are globally associated to the same reference position and one by one associated to respective sample pressure values, which fall within the range of the pressure sensor 28.
  • sample pressure values span uniformly a pressure interval, such that the differences between consecutive sample pressure values are all equal to one another and, for example, equal to 50 ⁇ 10 -3 bar.
  • the above first relation is defined by a corresponding analytical expression, e.g. a polynomial of the second order, which fits the flow rate values contained in table T1 as a function of pressure, i.e. of the quantity measured by the pressure sensor 28.
  • a corresponding analytical expression e.g. a polynomial of the second order, which fits the flow rate values contained in table T1 as a function of pressure, i.e. of the quantity measured by the pressure sensor 28.
  • Figure 3 shows an exemplary continuous curve R1 representing graphically the first relation: the horizontal axis represents the pressure of the pourable product, i.e. the supply pressure to the valve 5, whereas the vertical axis represents the reference flow rate.
  • the symbols q ref and p indicate respectively the reference flow rate and the pressure of the pourable product.
  • the first relation may be defined directly by the table T1, which can be interpolated in known manners by the control unit 27 as a function of any pressure value for the extraction of a corresponding value of the reference flow rate, although the latter value is not contained within table T1.
  • table T1 represents by itself a mathematical model of the valve 5, i.e. defines a plurality of discrete estimates of the flow rate of the pourable product flowing through the valve 5 as a function of the pressure when the shutter 8 is at the reference position.
  • Table T1 and/or the related analytical expression are peculiar to valve 5 and predetermined, in the sense that at least one of them is present in the memory portion 27a before any filling operation has been started through filling apparatus 1.
  • Table T1 and/or the related analytical expression, i.e. the first relation may be for instance provided to control unit 27 thanks to a testing procedure of the valve 5, as it will be disclosed in the following with greater detail, or simply be provided by the producer of the modulating valve 5 based on a prior knowledge of the technical properties of the valve 5.
  • control unit 27 further comprises another memory portion 27b storing a second relation between values of the quantity measured by the position sensor 26 and respective values of a parameter, which is defined by a ratio between the actual flow rate (i.e. the flow rate flowing through the valve 5 as a function of the pressure of the pourable product and the position of the shutter 8) and the reference flow rate, at the reference position of the shutter 8, according to the same pressure leading to the actual flow rate.
  • a parameter which is defined by a ratio between the actual flow rate (i.e. the flow rate flowing through the valve 5 as a function of the pressure of the pourable product and the position of the shutter 8) and the reference flow rate, at the reference position of the shutter 8, according to the same pressure leading to the actual flow rate.
  • C x q act p x q ref p
  • C, p, x, q ref , q act indicates respectively the parameter, the pressure, the position of the shutter 8, the reference flow rate and the actual flow rate.
  • the Applicant discovered that for each position of the shutter 8, the parameter takes respective different values that, on the other hand, do not change if the pressure of the pourable product changes. In other words, the Applicant discovered that the parameter is invariant with respect to pressure variations.
  • control unit 27 is provided with further prior information, which this time is about the specific influence that the position of the shutter 8 has on the flow rate flowing through the valve 5 for any pressure of the shutter 8.
  • control unit 27 receives the position signal L and the pressure signal P
  • the same control unit 27 is provided with sufficient information, thanks to the first and the second relation, to estimate reliably the actual flow rate.
  • the reference flow rate is related to the pressure signal P, according to the first relation
  • the actual flow rate is related to the reference flow rate and to the position signal L, according to the second relation.
  • the second relation is based, in particular, on another two-dimensional table T2, which is preferably stored in the memory portion 27b and contains a plurality of values of the parameter respectively associated to sample position values, which fall within the range of the position sensor 26.
  • sample position values span uniformly a position interval, such that the differences between consecutive sample position values are all equal to one another and, for example, equal to 0.1 mm.
  • the bounds of the position interval coincide with the position of closure and the position of maximum aperture.
  • the above second relation is defined by a corresponding analytical expression, e.g. a polynomial of the second order, which fits the values of the parameter contained in table T2 as a function of the position of the shutter, i.e. of the quantity measured by the position sensor 26.
  • a corresponding analytical expression e.g. a polynomial of the second order, which fits the values of the parameter contained in table T2 as a function of the position of the shutter, i.e. of the quantity measured by the position sensor 26.
  • Figure 4 shows an exemplary continuous curve R2 representing graphically the second relation: the horizontal axis represents the position of the shutter 8, whereas the vertical axis represents the parameter.
  • the symbols C and x indicate respectively the actual flow rate and the pressure of the pourable product.
  • the second relation may be defined directly by the table T2, which can be interpolated in known manners by the control unit 27 as a function of any position taken by the shutter 8 for the extraction of a corresponding value of the parameter, although the latter value is not actually contained within table T2.
  • table T2 represents by itself a mathematical model of the valve 5, i.e. defines a plurality of discrete estimates of the parameter as a function of the position of the shutter 8, independently of the pressure of the pourable product.
  • Table T2 and/or the related analytical expression are peculiar to valve 5 and predetermined, in the sense that at least one of them is present in the memory portion 27b before any filling operation has been started through filling apparatus 1.
  • Table T2 and/or the related analytical expression may be provided to control unit 27 in the same way table T1 and/or the related analytical expression are provided, i.e. thanks to a testing procedure of the valve 5 or to prior knowledge of the technical properties of the valve 5.
  • the second relation is even derivable from a third relation, conveniently stored in the memory portion 27b, between values of the quantity measurable through the position sensor 26 and respective values of the actual flow rate when the pressure takes a given reference pressure.
  • the reference pressure may be any positive pressure value within the range of the pressure sensor 28. Such a reference pressure, preferably, is stored in the memory portion 27b.
  • the third relation is based on a two dimensional table T3, which is preferably stored in the memory portion 27b and contains a plurality of flow rate values that are globally associated to the same reference pressure and one by one associated to respective sample position values, which more preferably are the same for which table T2 is built.
  • a special value is the one associated to the sample position value that is equal to the aforementioned reference position. Such a special value can be, nevertheless, separately stored in the memory portion 27b if not included in table T3.
  • Table T2 is related to table T3, and thus derivable therefrom, since the values of the parameter contained in table T2 are defined by respective ratios between the flow rate values contained in table T3 and the special value.
  • the third relation is defined by a corresponding analytical expression, e.g. a polynomial of the second order, which fits the flow rate values contained in table T3 as a function of the position of the shutter, i.e. the quantity measured by the position sensor 26.
  • a corresponding analytical expression e.g. a polynomial of the second order, which fits the flow rate values contained in table T3 as a function of the position of the shutter, i.e. the quantity measured by the position sensor 26.
  • the second relation is related to the third relation, and hence derivable therefrom, since the two respective analytical expressions are equal each other, except for a constant, which is the special value divided to the whole analytical expression of the third relation for obtaining the analytical expression of the second relation.
  • Figure 5 shows a plurality of continuous curves R3 that are respectively associated to a plurality of possible reference pressures and represent graphically respective possible third relations that may be each used for deriving the second relation: the horizontal axis represents the position of the shutter 8, whereas the vertical axis represents the actual flow rate.
  • the symbols q act and x indicate respectively the actual flow rate and the position of the shutter 8; moreover, the symbol x ref indicates here an exemplary reference position, to which a plurality of possible special values (here indicated with the symbol q spec ) correspond according to the represented third relations.
  • each of the possible third relations shown in Figure 5 is related to a different reference pressure, but all the resultant second relations that are derived from such third relations result coincident to each other, since the parameter is invariant with respect to pressure variations.
  • table T2 may define the second relation
  • table T3 may analogously define the third relation.
  • Table T3 and/or the related analytical expression may be provided to control unit 27 in the same way table T1 and/or the related analytical expression are provided, i.e. thanks to a testing procedure of the valve 5 or to prior knowledge of the technical properties of the valve 5.
  • control unit 27 is configured for extracting, according to a given sampling frequency, one current value of the quantity measurable through position sensor 26 and one current value of the quantity measurable through pressure sensor 28, at each sample time, respectively from signals L, P received from the position sensor 26 and the pressure sensor 28.
  • control unit 27 is configured for determining a current value of the parameter through the second relation.
  • control unit 27 is configured for accessing table T2 with the extracted current value from the position signal L and for interpolating table T2 to extract therefrom the current value of the parameter.
  • control unit 27 is configured for computing the current value of the parameter by substituting the extracted current value from the position signal L into the analytical expression defining the second relation.
  • control unit 27 is configured for determining a current value of the reference flow rate through the first relation.
  • control unit 27 is configured for accessing table T1 with the extracted current value from the pressure signal P and for interpolating table T1 to extract therefrom the current value of the reference flow rate.
  • control unit 27 is configured for computing the current value of the reference flow rate by substituting the extracted current value from the pressure signal P into the analytical expression defining the first relation.
  • control unit 27 is configured to determine, for each sample time, a current value of the actual flow rate from the current values of the parameter and of the reference flow rate.
  • control unit 27 perform the product of the current value of the parameter with the current value of the reference flow rate, so as to obtain the current value of the actual flow rate.
  • control unit 27 updates a flow rate signal Q, which consists of a time series of the determined current values of the actual flow rate.
  • the coil 23 receives, in use, a command signal CS from the control unit 27, correlated with the flow rate signal Q, and consequently produces, according to a known mode of operation of the coils, an electromagnetic field adapted to magnetically interact with the permanent magnets 24 included in the shutter 8, so as to move the shutter 8 itself inside the channel 7.
  • control unit 27 determines a set position signal L set that is sample-by-sample compared with the position signal L, which defines, therefore, a feedback signal for closed-loop controlling the actual position of the shutter 8.
  • command signal CS is proportional to the difference between the feedback position signal L and the set position signal L set and, more in particular, to the integral and the derivative thereof; in other words, control unit 27 implements a so-called PID ("partial-integrative-derivative") control for controlling the position of the shutter 8.
  • PID partial-integrative-derivative
  • the set position signal L set includes:
  • Control unit 27 determines the end of the constant portion, which coincides with the beginning of the closure ramp, during filling by performing numerical integration of the flow rate signal Q until a filling threshold is reached.
  • the end of the constant portion occurs at the time sample when the filling threshold is reached.
  • the slopes of the opening and closure ramps are hold in any one of the memory portions 27a, 27b of control unit 27, whereas the end of the constant portion is determined during the filling.
  • the filling threshold coincides with the desired filling level for the container 2 and is hold in any one of the memory portions 27a, 27b; preferably, the filling threshold is updated after each filling by subtracting a filling lag to such desired filling level.
  • the filling lag is defined as the volume of pourable product supplied to the container 2 during the closure ramp and the same filling lag is computed by control unit 27 through a numerical integration of a portion of the flow rate signal Q, which corresponds to the closure ramp.
  • control unit 27 commands the position of shutter 8 along the axis A as a function of the position signal L and the flow rate signal Q, the latter being generated from the determined current values of the actual flow rate.
  • apparatus 1 is devoid of any flow rate sensor.
  • tables T1, T3 can be built during respective testing operations by means of a testing apparatus 101, which allows the performance of a plurality of measurements of the actual flow rate of a testing fluid through the valve 5, prior to the first filling of a container 2 and for a plurality of given positions of the shutter 8 and pressures of the testing fluid, specifically supply pressures to the valve 5.
  • testing apparatus 101 is defined by the apparatus 1 with the addition of a flow rate sensor, in particular a flowmeter 125 coupled to the apparatus 1, and the possible replacement of control unit 27 with a different control unit 127.
  • Testing apparatus 101 is connected in a fluidic manner and by means of a duct 104, to a tank 103 (only partially illustrated) containing the testing fluid.
  • Flowmeter 125 is connected to control unit 127 and is configured to measure the actual flow rate of the testing fluid passing through the valve 5, generate a flow rate signal Q meas correlated with the measured actual flow rate, and send the signal Q meas to the control unit 127.
  • the flowmeter 125 is arranged in correspondence of the duct 104, in order to measure, during the testing operations, the actual flow rate of the testing fluid passing through the duct 104 itself and direct it towards the valve 5.
  • the tank 103 is filled with a quantity of testing fluid, e.g. water, having the above-mentioned reference pressure.
  • a quantity of testing fluid e.g. water
  • control unit 127 progressively sends to coil 23 a plurality of commands CS' correlated to a respective plurality of desired position values of the shutter 8, i.e. desired opening grades of the valve 5, so that the shutter 8 moves accordingly inside the channel 7.
  • a plurality of commands CS' correlated to a respective plurality of desired position values of the shutter 8, i.e. desired opening grades of the valve 5, so that the shutter 8 moves accordingly inside the channel 7.
  • Each of the desired position values corresponds to one of the above-mentioned sample position values.
  • control unit 127 associates the current value measured by the position sensor 26 and the current flow rate value measured by the flowmeter 125.
  • control unit 127 stores such current value and such current flow rate value in table T3.
  • the tank 103 is repeatedly refilled with respective quantities of testing fluid at distinct desired pressures equal to the above-mentioned pressure sample values, while the position of the shutter 8 is maintained fixed at the aforementioned reference position.
  • control unit 127 associates the current value measured by the pressure sensor 28 and the current reference flow rate value measured by the flowmeter 125.
  • control unit 127 stores such current value and such current reference flow rate value in table T1.
  • the table T2 can be possibly derived by control unit 127 from table T3 and all tables T1, T2, T3 are respectively transferred to the memory portions 27a, 27b of the control unit 27.
  • only tables T1, T3 or only tables T1, T2 may be transferred to the respective memory portions 27a, 27b.
  • control unit 127 may be configured to fit analytical expressions to table T1 and to at least one of tables T2, T3, such that the latter expressions may be transferred to the respective memory portions 27a, 27b.
  • the flowmeter 125 is removed from testing apparatus 101 to obtain the apparatus 1, which is connected in a fluidic manner to the tank 3 by means of the duct 4, so as to become ready for use.
  • tables T1, T2, T3 may be occasionally updated by repeating the testing operations after the performance of a filling operation, for example during a programmed or undesired machine downtime.
  • apparatus 1 is separated from tank 3 and connected to tank 103 via the duct 104, in which flowmeter 125 is arranged and fixed thereto.
  • tables T1, T2, T3 are adapted to the actual technical properties of the valve 5 after intensive use thereof.
  • the first relation is provided, in particular to control unit 27, between values of the quantity measurable through the pressure sensor 28 and respective values of the reference flow rate.
  • the third relation is provided, in particular to control unit 27, between the values of the quantity measurable through the position sensor 26 and respective values of the actual flow rate when the pressure of the pourable product takes the reference pressure.
  • the second relation is provided and, in particular, determined by control unit 27 based on the third relation and the aforementioned special value; the second relation being between the values of the quantity measurable through the position sensor 26 and respective values of the parameter.
  • the current values of the respective quantity measurable through the sensors 26, 28, are get and more specifically received by the control unit 27 from the sensors 26, 28.
  • the current value of the parameter is determined, in particular by the control unit 27, through the second relation according to the current value of the quantity measurable through the position sensor 26 (step 506) .
  • the current value of the reference flow rate is determined, in particular by the control unit 27, through the first relation (step 507) according to the current value of the quantity measurable through the pressure sensor 28.
  • the current value of the actual flow rate is computed from the current value of the reference flow rate and the current value of the parameter.
  • the position of the shutter 8 is controlled based on the determined current value of the actual flow rate (step 509) .
  • the actuator 22 of the shutter 8 of the valve 5 receives the command signal CS from the control unit 27 at a speed of many orders of magnitude greater in respect to the hypothetical case in which the command signal CS would have been a function of flow rate values measured by a flow rate sensor, such as, for instance, flowmeter 125.
  • control unit 27 should have waited to receive the flow rate signal Q directly from the flowmeter 125 before being able to control the movement of the shutter 8.
  • valve 5 Thanks to the discovered invariance of the parameter to pressure variations, it is possible to gain complete information about the technical properties of valve 5 with a strongly reduced quantity of testing data.
  • tables T1, T2, T3 may be replaced by one or more general databases.
  • Table T2 and the related analytical expression may lack within control unit 27; in the latter case, the second relation would be based on a ratio between the special value and the flow rate values, in particular extracted by interpolation from table T3 or obtained by substitution into the related analytical expression, as a function of corresponding values of the quantity measurable through the position sensor 26.
  • control unit 27 would be configured to extract from table T3 or to compute through the corresponding analytical expression the current value of the actual flow rate at the reference pressure as a function of the current value of the quantity measureable through the position sensor 26. Moreover, the control unit 27 would be further configured to compute a ratio between the same current value of the actual flow rate at the reference pressure and the special value to determine the current value of the parameter.
  • the special value may also be computed by the control unit 27 by extraction from table T3 or through substitution of the reference position into the related analytical expression.
  • memory portions 27a, 27b may coincide to each other.
  • the testing operations may be performed through a testing apparatus including a modulating valve, which is distinct from modulating valve 5 but has the same technical properties of the latter.
  • the testing operations performed with the aid of the testing apparatus 101 may include procedures different from those described above; in particular, the order of the flow rate measurements may be any appropriate order from the practical point of view.
  • the pressure sensor 28 may be used for measuring the pressure of the pourable product at the outlet opening 13 or anywhere else in the channel 7 or in the duct 4.
  • Position sensor 26 and pressure sensor 28 are not strictly necessary and, therefore, may be lacking.
  • the current values of the respective measurable quantities may be gotten, for instance, from the command signal CS, as regard the position of the shutter 8, or known a priori, as regard the pressure, more specifically the supply pressure.
  • control unit 27 may comprise control unit 127, so that no replacement of control units 27, 127 occurs.
  • the shape of the containers 2 may be different from the one of a bottle and the pourable product may be a food product or any other kind of industrial product.

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Basic Packing Technique (AREA)

Claims (15)

  1. Procédé de remplissage d'un contenant (2) avec un produit versable au moyen d'une vanne modulante (5) pourvue d'un obturateur (8) mobile pour adopter une pluralité de positions ; le procédé comprenant les étapes suivantes :
    - obtention (504) d'une première valeur actuelle d'une première grandeur indiquant la position dudit obturateur (8) ;
    - obtention (505) d'une deuxième valeur actuelle d'une deuxième grandeur indiquant une pression dudit produit versable ;
    - commande (509) de la position dudit obturateur (8) sur la base d'une troisième valeur actuelle indiquant un débit réel dudit produit versable s'écoulant au travers de ladite vanne (5) ;
    le procédé comprenant en outre les étapes suivantes :
    - fourniture (501) d'une première relation (R1 ; T1) entre des valeurs de ladite deuxième grandeur et des valeurs respectives d'un débit de référence dudit produit versable s'écoulant au travers de ladite vanne (5) lorsque ledit obturateur (8) occupe une position de référence donnée ;
    - fourniture (503) d'une deuxième relation (R2 ; T2) entre des valeurs de ladite première grandeur et des valeurs respectives d'un paramètre, lequel est défini par un rapport entre ledit débit réel et ledit débit de référence et est invariant par rapport à des variations de pression ;
    - détermination (506) d'une quatrième valeur actuelle dudit paramètre grâce à ladite deuxième relation (R2 ; T2) selon ladite première valeur actuelle ;
    - détermination (507) d'une cinquième valeur actuelle dudit débit de référence grâce à ladite première relation (R1 ; T1) selon ladite deuxième valeur actuelle ; et
    - calcul (508) de ladite troisième valeur actuelle à partir de ladite quatrième valeur actuelle et de ladite cinquième valeur actuelle.
  2. Procédé selon la revendication 1, dans lequel l'étape d'obtention (504) de ladite première valeur actuelle comprend la réalisation d'une mesure correspondante de ladite première grandeur ; et/ou
    dans lequel l'étape d'obtention (505) de ladite deuxième valeur actuelle comprend la réalisation d'une mesure correspondante de ladite deuxième grandeur.
  3. Procédé selon la revendication 1 ou 2, dans lequel ladite pression est la pression d'alimentation appliquée à ladite vanne (5).
  4. Procédé selon l'une quelconque des revendications précédentes, dans lequel l'étape de fourniture (501) de ladite première relation (R1 ; T1) comprend la fourniture d'au moins un premier objet entre une première table de correspondance (T1) et une première expression analytique (R1) ; ledit premier objet associant lesdites valeurs de ladite deuxième grandeur auxdites valeurs dudit débit de référence.
  5. Procédé selon l'une quelconque des revendications précédentes, dans lequel l'étape de fourniture (503) de ladite deuxième relation (R2 ; T2) comprend la fourniture (502) d'une troisième relation (R3 ; T3) entre lesdites valeurs de ladite première grandeur et des valeurs respectives dudit débit réel à une pression de référence donnée ;
    ladite deuxième relation (R2 ; T2) étant basée sur ladite troisième relation (R3 ; T3) et sur une valeur spéciale dudit débit réel correspondant à ladite position de référence et à ladite pression de référence.
  6. Procédé selon la revendication 5, dans lequel l'étape de fourniture (502) de ladite troisième relation (R3 ; T3) comprend la fourniture d'une deuxième table de correspondance (T3) associant lesdites valeurs de ladite première grandeur auxdites valeurs dudit débit réel à la pression de référence donnée ;
    dans lequel ladite deuxième relation (R2 ; T2) :
    - est basée sur un rapport entre lesdites valeurs dudit débit réel, extraites de ladite deuxième table de correspondance (T3) en association avec lesdites valeurs de ladite première grandeur, et ladite valeur spéciale ; ou
    - est basée sur une troisième table de correspondance (T2) déduite de ladite deuxième table de correspondance (T3) sur la base de ladite valeur spéciale ; ladite troisième table de correspondance (T2) associant lesdites valeurs de ladite première grandeur et lesdites valeurs dudit paramètre.
  7. Procédé selon la revendication 5, dans lequel l'étape de fourniture (502) de ladite troisième relation (R3 ; T3) comprend la fourniture d'une deuxième expression analytique (R3) associant lesdites valeurs de ladite première grandeur auxdites valeurs dudit débit réel à la pression donnée ;
    dans lequel ladite deuxième relation (R2 ; T2) :
    - est basée sur un rapport entre lesdites valeurs dudit débit réel, obtenu grâce à ladite deuxième expression analytique (R3) en fonction desdites valeurs de ladite première grandeur, et ladite valeur spéciale ; ou
    - est basée sur une troisième expression analytique (R2) déduite en divisant ladite valeur spéciale par l'intégralité de ladite deuxième expression analytique (R3).
  8. Procédé selon l'une quelconque des revendications 1 à 4, dans lequel l'étape de fourniture (503) de ladite deuxième relation (R2 ; T2) comprend la fourniture d'au moins un deuxième objet entre une quatrième table de correspondance (T2) et une quatrième expression analytique (R2) ; le deuxième objet associant lesdites valeurs de ladite première grandeur auxdites valeurs dudit paramètre.
  9. Appareil (1) de remplissage d'un contenant (2) avec un produit versable, l'appareil comprenant une vanne modulante (5) pourvue d'un obturateur (8) mobile pour adopter une pluralité de positions ; l'appareil comprenant en outre :
    - un premier moyen électronique (26) configuré pour obtenir, durant le remplissage, une première valeur actuelle d'une première grandeur indiquant la position dudit obturateur (8) ;
    - un deuxième moyen électronique (28) configuré pour obtenir, durant le remplissage, une deuxième valeur actuelle d'une deuxième grandeur indiquant une pression dudit produit versable ; et
    - une unité de commande (27), laquelle :
    a) est couplée à la fois audit premier et audit deuxième moyen électronique (26, 28) pour recevoir ladite première et ladite deuxième valeur actuelle ; et
    b) est configurée pour commander la position dudit obturateur (8) durant le remplissage sur la base d'une troisième valeur actuelle indiquant un débit réel dudit produit versable s'écoulant au travers de ladite vanne (5) ;
    caractérisé en ce que ladite unité de commande (27) comprend :
    - une première mémoire (27a) stockant une première relation (R1 ; T1) entre des valeurs de ladite deuxième grandeur et des valeurs respectives d'un débit de référence dudit produit versable s'écoulant au travers de ladite vanne (5) lorsque ledit obturateur (8) occupe une position de référence donnée ; et
    - une deuxième mémoire (27b) stockant une deuxième relation (R2 ; T2) entre des valeurs de ladite première grandeur et des valeurs respectives d'un paramètre, lequel est défini par un rapport entre ledit débit réel et ledit débit de référence et est invariant par rapport à des variations de pression ;
    et en ce que ladite unité de commande (27) est configurée en outre pour :
    - déterminer une quatrième valeur actuelle dudit paramètre grâce à ladite deuxième relation (R2 ; T2) selon ladite première valeur actuelle ;
    - déterminer une cinquième valeur actuelle dudit débit de référence grâce à ladite première relation (R1 ; T1) selon ladite deuxième valeur actuelle ; et
    - calculer ladite troisième valeur actuelle à partir de ladite quatrième valeur actuelle et de ladite cinquième valeur actuelle.
  10. Appareil selon la revendication 9, dépourvu de capteurs de débit.
  11. Appareil selon la revendication 9 ou 10, dans lequel ledit premier moyen électronique (26) comprend un capteur de position configuré pour détecter ladite première valeur actuelle ; et/ou
    dans lequel ledit deuxième moyen électronique (28) comprend un capteur de pression configuré pour détecter ladite deuxième valeur actuelle.
  12. Appareil selon l'une quelconque des revendications 9 à 11, dans lequel ladite première mémoire (27a) stocke au moins un premier objet entre une première table de correspondance (T1) et une première expression analytique (R1), premier objet sur lequel ladite première relation (R1 ; T1) est basée ; ledit premier objet associant lesdites valeurs de ladite deuxième grandeur auxdites valeurs dudit débit de référence.
  13. Appareil selon l'une quelconque des revendications 9 à 12, dans lequel :
    - ladite deuxième mémoire (27b) stocke une troisième relation (R3 ; T3) définie par une deuxième table de correspondance (T3) associant lesdites valeurs de ladite première grandeur à des valeurs dudit débit réel à une pression de référence donnée ;
    - ladite unité de commande (27) est configurée pour extraire de ladite deuxième table de correspondance (T3) une valeur spéciale dudit débit réel correspondant à ladite position de référence et à ladite pression de référence, et/ou ladite valeur spéciale est stockée dans ladite deuxième mémoire (27b) ;
    - ladite deuxième relation est basée sur un rapport entre lesdites valeurs dudit débit réel, extraites de ladite deuxième table de correspondance (T3) en association avec lesdites valeurs de ladite première grandeur, et ladite valeur spéciale ;
    et dans lequel ladite unité de commande (27) est configurée en outre pour :
    - accéder à ladite deuxième table de correspondance (T3) avec ladite première valeur actuelle et, en conséquence, extraire de ladite deuxième table de correspondance (T3) une sixième valeur actuelle dudit débit réel à la pression de référence donnée ; et
    - déterminer ladite quatrième valeur actuelle grâce à ladite deuxième relation en calculant un rapport entre ladite sixième valeur actuelle et ladite valeur spéciale.
  14. Appareil selon l'une quelconque des revendications 9 à 12, dans lequel :
    - ladite deuxième mémoire (27b) stocke une troisième relation (R3 ; T3) définie par une deuxième expression analytique (R3) associant lesdites valeurs de ladite première grandeur à des valeurs dudit débit réel à une pression de référence donnée ;
    - ladite unité de commande (27) est configurée pour obtenir, à partir de ladite deuxième expression analytique (R3), une valeur spéciale dudit débit réel correspondant à ladite position de référence et à ladite pression de référence, et/ou ladite valeur spéciale est stockée dans ladite deuxième mémoire (27b) ;
    - ladite deuxième relation est basée sur un rapport entre lesdites valeurs dudit débit réel, obtenues grâce à ladite deuxième expression analytique (R3) en fonction desdites valeurs de ladite première grandeur, et ladite valeur spéciale ;
    et dans lequel ladite unité de commande (27) est configurée en outre pour :
    - calculer une sixième valeur actuelle dudit débit réel à la pression de référence donnée grâce à ladite deuxième expression analytique (R3) en fonction de ladite première valeur actuelle ; et
    - déterminer ladite quatrième valeur actuelle grâce à ladite deuxième relation en calculant un rapport entre ladite sixième valeur actuelle et ladite valeur spéciale.
  15. Appareil selon l'une quelconque des revendications 9 à 12, dans lequel ladite deuxième mémoire (27b) stocke au moins un deuxième objet entre une troisième table de correspondance (T2) et une troisième expression analytique (R2), deuxième objet sur lequel ladite deuxième relation (R2 ; T2) est basée ; le deuxième objet associant lesdites valeurs de ladite première grandeur auxdites valeurs dudit paramètre.
EP19305503.5A 2019-04-18 2019-04-18 Procédé et appareil pour remplir un récipient Not-in-force EP3725734B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP19305503.5A EP3725734B1 (fr) 2019-04-18 2019-04-18 Procédé et appareil pour remplir un récipient
PCT/EP2020/056627 WO2020212029A1 (fr) 2019-04-18 2020-03-12 Procédé et appareil de remplissage d'un contenant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19305503.5A EP3725734B1 (fr) 2019-04-18 2019-04-18 Procédé et appareil pour remplir un récipient

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EP3725734A1 EP3725734A1 (fr) 2020-10-21
EP3725734B1 true EP3725734B1 (fr) 2021-11-10

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Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITPR20070026A1 (it) * 2007-04-11 2008-10-12 Sbc Bottling & Canning S P A Valvola di riempimento e un procedimento per riempire un contenitore
PL3106425T3 (pl) * 2013-03-22 2021-02-08 Pepsico Inc Układ napełniania pojemnika
DE102014110161A1 (de) * 2014-07-18 2016-01-21 Krones Aktiengesellschaft Verfahren zum Befüllen eines Behälters mit einem Füllprodukt mittels eines Proportionalventils
EP3323773A1 (fr) * 2016-11-21 2018-05-23 Sidel Participations Machine de remplissage pour le remplissage de récipients avec un produit versable

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WO2020212029A1 (fr) 2020-10-22

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