EP3169440B1 - Procédé de régulation du fonctionnement d'une centrifugeuse - Google Patents

Procédé de régulation du fonctionnement d'une centrifugeuse Download PDF

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Publication number
EP3169440B1
EP3169440B1 EP15735924.1A EP15735924A EP3169440B1 EP 3169440 B1 EP3169440 B1 EP 3169440B1 EP 15735924 A EP15735924 A EP 15735924A EP 3169440 B1 EP3169440 B1 EP 3169440B1
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EP
European Patent Office
Prior art keywords
centrifuge
noise
noise level
measuring
takes place
Prior art date
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Active
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EP15735924.1A
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German (de)
English (en)
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EP3169440A1 (fr
Inventor
Markus Fleuter
Wilfried Mackel
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GEA Mechanical Equipment GmbH
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GEA Mechanical Equipment GmbH
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B11/00—Feeding, charging, or discharging bowls
    • B04B11/04—Periodical feeding or discharging; Control arrangements therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
    • B04B1/20—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl
    • B04B1/2016—Driving control or mechanisms; Arrangement of transmission gearing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B13/00—Control arrangements specially designed for centrifuges; Programme control of centrifuges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B9/00—Drives specially designed for centrifuges; Arrangement or disposition of transmission gearing; Suspending or balancing rotary bowls
    • B04B9/10—Control of the drive; Speed regulating

Definitions

  • the invention relates to a method for controlling the operation of a centrifuge with a rotatable drum, in particular a separator or a decanter, with for noise reduction in the centrifugal processing of a product, in particular in a clarification of a product and / or in a separation of a product into different liquid phases with the drum.
  • the current operation of the centrifuge is optimized in the centrifugal processing of a product, with no or only marginally fault detection is in the center but rather a minimization of noise as a function of at least one or more predetermined limits.
  • the sound pressure level is referred to as a measure.
  • dB decibels
  • other physical quantities as a basis for reducing the volume of the centrifuge are also sound power levels (expressed in dB), the loudness (indicated in "sone”) the volume in Fon, or weighted sound pressure or sound power levels.
  • the A-weighted sound level is modeled on the human ear in a frequency-dependent manner with correction factors in order to be able to simulate the perceived volume better.
  • Fig. 1 shows a schematic representation of a separator for the centrifugal processing of a product, in particular for clarifying a product of solids (or for concentrating such a phase) and / or for separating a product into different liquid phases.
  • the in Fig. 1 shown separator has a (here only schematically shown) rotatable drum 1 with preferably vertical axis of rotation, which has a (not shown here) drive spindle, which is driven via a (here also not shown) drive connection with a motor 2.
  • Liquids of different density and optionally solids can be passed out of the drum through one or more outlets 4, 5 and possibly solids discharge openings 6.
  • In the supply line 3 and the discharge (s) 4 and 5 preferably controllable (and preferably throttled) valves are provided (not shown here).
  • the rotatable drum 1 and preferably the drive / motor 2 are mounted on a machine frame 13.
  • the machine frame 13 is in turn placed on a foundation 15 via one or more foot elements 14, which may have a spring or may be formed as such. In Fig. 2 this spring is shown as block 16.
  • the noise of the centrifuge, in particular in the vicinity of the drum 1, with a corresponding thereto suitable sensor device, in particular with a microphone 7, is measured.
  • This measurement takes place continuously, continuously or at intervals.
  • the data measured by the sensor device are forwarded to a control device 8 (which, among other things, has a computer), where it is evaluated. So only the sound level can be measured. However, it is also conceivable to record and evaluate a frequency spectrum.
  • Fig. 2 Also shown is a microphone 7 and, alternatively, a sensor 7 'for measurement directly on a hood of a separator.
  • the measured data are compared with desired data. Based on this comparison, at least one manipulated variable is determined.
  • the control device 8 is taken with the help of at least one manipulated variable (or more manipulated variables) so influence on the operation of the centrifuge that the controlled variable - the noise - is changed so that it assumes a desired behavior.
  • the inlet 3 and / or the discharge pressures in the processes 4, 5 and / or the emptying / emptying frequency via the drain 6 of the drum 1.
  • the noise at emptying e.g. by means of a piston valve at discharge openings - with a smaller volume less than with solid discharges with a larger volume. But more frequent emptying are necessary to achieve the total intended emptying volume.
  • the airborne sound is particularly preferably determined with the sensor device, which is transmitted through the centrifuge and surrounding machine parts and / or through a gas surrounding the drum.
  • the structure-borne noise could also be detected.
  • the preferred frequency band recorded for both airborne and structure-borne noise measurements is 50-12,000 Hz, preferably 50-8,000 Hz, very particularly preferably 50-5,000 Hz.
  • noise level limits I and II it is conceivable to define one or more upper noise level limits I and II, and to operate the machine in such a way that, depending on the time of day, one or the other of the limits is adhered to, for example in order to comply with noise regulations. which prescribe a quieter operation at night than during the day.
  • Controlled are preferably as manipulated variables or the discharge pressures, the volume flow to be processed, the emptying amount, the emptying frequency and the rotational speed of the drum. If z. B. a separator MSE 500 at 50 m 3 / h and 6 bar discharge pressure generates a sound pressure of 84 dB (A) (measured by way of example in 1 m distance), this delivers at operation with 35 m 3 / h and 4.5 bar discharge pressure a significantly reduced sound pressure of only 80 dB (A).
  • the regulation of the noise level is preferably supplemented by a control of further variables, for example a regulation of the turbidity with the aid of a turbidity measurement in the sequence for determining the separation efficiency.
  • the measurement of the noise level takes place at intervals which are less than or equal to 1 h, preferably less than or equal to 10 min, in particular less than or equal to 1 min. However, it is also conceivable to carry out the measurement less frequently, for example only if, after a predetermined time of day, a change in the noise level is desired.
  • the inventive method is suitable for operating a centrifuge, in particular a separator with a vertical axis of rotation in continuous operation, which has a separating means such as a separator disk package in the drum.
  • the centrifuge may be formed in other ways, for example as a solid bowl screw centrifuge, in particular with a horizontal axis of rotation (not shown here).
  • the distance of the sensor device to the centrifuge can be influenced whether more or less noise influences from the environment are included in the measurement.
  • the usual distance to the surface of 1m is included for example, less than 1m, in particular less than 50 cm, more preferably set to less than 30 cm.
  • this measurement preferably sensing on the oscillating system of the centrifuge, will be carried out at a location which can oscillate particularly intensively, for example on the hood.
  • the machine itself must be isolated from the environment via one or more dampers. In this way, the influence of structure-borne noise from the environment on the measurement of noise can be minimized.
  • a separator Fig. 2
  • a structure-borne sound sensor 7 ' or -auf disturbing, in particular an electro-acoustic transducer for structure-borne sound
  • a noise level limit I should be respected or not possible or if only briefly exceeded.
  • a noise level limit I is set.
  • the structure-borne noise and / or the airborne sound is determined for measuring the noise of the centrifuge, here by means of preferably a microphone or more microphones 7 as a sensor device.
  • the noise level limit I when starting up to a rated speed (operating times 1 to 2) and then in idle (ready, operating times 2 to 3) at rated speed is not reached or fallen below. Then, in the case of centrifugal processing of the product (operating times 3. - 4.) reaches the noise level limit and then exceeded.
  • control device 8 which also calculates a modified manipulated variable - here a changed speed. Thereupon (operating times 4 - 5), the control device 8 reduces the speed (see also Fig.1 ) until again falling below the noise level limit I.
  • This method can be well applied, for example, in separators, in particular nozzle separators, or decanters.
  • Fig. 4b illustrated variant of a method according to the invention is again a noise level limit I observed or not possible or if only briefly exceeded, but here but different than in Fig. 4a not defined as a peak but as an average of the noise.
  • the thus defined noise level limit / average I is set.
  • the structure-borne noise and / or the airborne sound is determined for measuring the noise of the centrifuge, again by means of preferably a microphone or a plurality of microphones 7 as a sensor device.
  • Fig. 4b shows the noise at so-called self-draining separators, in which solids are discharged at intervals by a brief opening of Feststoffaustragsö Maschinen Maschinennnen.
  • the regulating device advantageously uses as manipulated variables and simply uses the emptying amount at the outlet and the emptying frequency at the outlet 6 of the drum 1 of the separator, and possibly changes it.
  • drum 1 engine 2 supply 3 derivations 4, 5 solids discharge 6 microphone 7 control device 8th management 9 data lines 10, 11, 12 machine frame 13 foot elements 14 foundation 15 feather 16 Hood 17 decanter 18 axis of rotation 19

Landscapes

  • Centrifugal Separators (AREA)

Claims (12)

  1. Procédé de régulation du fonctionnement d'une centrifugeuse comportant un tambour rotatif (1), en particulier un séparateur ou un décanteur, pour réduire le bruit lors du traitement par centrifugation d'un produit, en particulier lors d'une clarification d'un produit et/ou d'une séparation d'un produit en différentes phases liquides avec le tambour (1), caractérisé en ce que, lors de la régulation du fonctionnement de la centrifugeuse, la production de bruit de la centrifugeuse est régulée
    a. en définissant au moins une limite de niveau de bruit (I, II),
    b. en mesurant la production de bruit de la centrifugeuse avec un dispositif capteur pendant le fonctionnement, c'est-à-dire pendant une rotation du tambour (1) de la centrifugeuse,
    c. en transmettant les données mesurées par le dispositif capteur à un dispositif de régulation (8) avec lequel les données mesurées sont comparées à des données de consigne et avec lequel au moins une grandeur réglante est déterminée à l'aide de cette comparaison et
    d. en exerçant, avec le dispositif de régulation (8), une influence sur le fonctionnement de la centrifugeuse à l'aide de ladite au moins une grandeur réglante ou de plusieurs grandeurs réglantes de telle sorte que la production de bruit ne dépasse pas ladite au moins une limite de niveau de bruit (I, II),
    e. la vitesse de rotation de la broche d'entraînement étant utilisée comme ladite au moins une grandeur réglante et/ou la ou les pressions de sortie dans une entrée ou dans une ou plusieurs sorties (4, 5) du tambour (1) étant utilisées comme ladite au moins une grandeur réglante et/ou le débit volumique traité étant utilisé comme ladite au moins une grandeur réglante.
  2. Procédé selon la revendication 1, caractérisé en ce que l'on détermine le son solidien et/ou le son aérien pour mesurer la production de bruit de la centrifugeuse.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que le niveau de bruit est mesuré à l'aide d'au moins un microphone ou de plusieurs microphones (7) comme dispositif capteur.
  4. Procédé selon l'une des revendications précédentes, caractérisé en ce que le niveau de bruit est mesuré à l'aide d'au moins un capteur piézoélectrique ou d'au moins un vibromètre laser à effet Doppler.
  5. Procédé selon l'une des revendications précédentes, caractérisé en ce que le niveau de bruit est mesuré en permanence de façon continue.
  6. Procédé selon l'une des revendications 1 à 4 précédentes, caractérisé en ce que le niveau de bruit est mesuré à intervalles réguliers.
  7. Procédé selon la revendication 6, caractérisé en ce que le niveau de bruit est mesuré à des intervalles inférieurs ou égaux à 1 heure, de préférence inférieurs ou égaux à 10 minutes, en particulier inférieurs ou égaux à 1 minute.
  8. Procédé selon l'une des revendications précédentes, caractérisé en ce que la quantité de vidange à la sortie (6) est en outre utilisée comme ladite au moins une grandeur réglante.
  9. Procédé selon l'une des revendications précédentes, caractérisé en ce que la fréquence de vidange à la sortie (6) est en outre utilisée comme ladite au moins une grandeur réglante.
  10. Procédé selon l'une des revendications précédentes, caractérisé en ce que plusieurs limites supérieures de niveau de bruit I et II sont définies, et que la centrifugeuse est régulée de telle sorte que l'une des limites de niveau de bruit I et Il ne soit pas dépassée en fonction de l'heure.
  11. Procédé selon l'une des revendications précédentes, caractérisé en ce que la régulation du niveau de bruit est combinée avec au moins une autre régulation, par exemple une régulation de turbidité.
  12. Procédé selon l'une des revendications précédentes, caractérisé en ce que la mesure du son est effectuée sous la forme d'une mesure de son solidien, en particulier au niveau d'une coiffe.
EP15735924.1A 2014-07-17 2015-07-06 Procédé de régulation du fonctionnement d'une centrifugeuse Active EP3169440B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014110072 2014-07-17
PCT/EP2015/065353 WO2016008755A1 (fr) 2014-07-17 2015-07-06 Procédé de régulation du fonctionnement d'une centrifugeuse

Publications (2)

Publication Number Publication Date
EP3169440A1 EP3169440A1 (fr) 2017-05-24
EP3169440B1 true EP3169440B1 (fr) 2019-09-04

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EP15735924.1A Active EP3169440B1 (fr) 2014-07-17 2015-07-06 Procédé de régulation du fonctionnement d'une centrifugeuse

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US (1) US10639649B2 (fr)
EP (1) EP3169440B1 (fr)
CN (1) CN106536062B (fr)
WO (1) WO2016008755A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4079151A1 (fr) * 2021-04-22 2022-10-26 Groschopp AG Drives & More Procédé d'extraction de rayons de miel et extracteur centrifuge à miel

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200005479A1 (en) * 2016-04-14 2020-01-02 Terumo Bct, Inc. Loading of Disposable
DE102016116391B3 (de) * 2016-09-01 2018-02-01 Gea Mechanical Equipment Gmbh Verfahren zum Überwachen einer Schneckenzentrifuge
DE102017111479A1 (de) * 2017-05-24 2018-11-29 Hengst Se Verfahren zum Betreiben eines Zentrifugalabscheiders
DE102017126973A1 (de) * 2017-11-16 2019-05-16 Gea Mechanical Equipment Gmbh Verfahren zum Erkennen des Betriebszustands einer Zentrifuge

Citations (7)

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Publication number Priority date Publication date Assignee Title
DE1197814B (de) 1961-09-27 1965-07-29 Ruetgerswerke Ag Einrichtung zur Kontrolle und Steuerung der Fuellung einer Schleudertrommel
US3408001A (en) 1965-10-18 1968-10-29 Alfa Laval Ab Sludge centrifuge
DE4004584A1 (de) 1990-02-15 1991-08-22 Krauss Maffei Ag Verfahren und vorrichtung zum betrieb einer filterzentrifuge
US5879279A (en) 1996-09-05 1999-03-09 U.S. Centrifuge Centrifugal separator apparatus having a vibration sensor
US5948271A (en) 1995-12-01 1999-09-07 Baker Hughes Incorporated Method and apparatus for controlling and monitoring continuous feed centrifuge
US20130012371A1 (en) 2010-04-02 2013-01-10 Pneumatic Scale Corporation Centrifuge System and Method
WO2014089749A1 (fr) 2012-12-11 2014-06-19 Intel Corporation Détection de contexte pour dispositifs informatiques

Family Cites Families (5)

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Publication number Priority date Publication date Assignee Title
DE108467C (fr)
DE4315694A1 (de) 1993-05-11 1994-11-17 Kloeckner Humboldt Deutz Ag Maschine mit Vorrichtungen zur Verminderung von Körperschallübertragungen
DE4327291C2 (de) 1993-08-13 1997-07-31 Krauss Maffei Ag Verfahren und Vorrichtung zur Bestimmung von Meßgrößen einer Zentrifuge
SE505385C2 (sv) * 1995-11-17 1997-08-18 Alfa Laval Ab Rotor för en centrifugalseparator
DE10024412A1 (de) 2000-05-19 2001-11-29 Westfalia Separator Ind Gmbh Verfahren zur Steuerung von Maschinen und Informationssystemen

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1197814B (de) 1961-09-27 1965-07-29 Ruetgerswerke Ag Einrichtung zur Kontrolle und Steuerung der Fuellung einer Schleudertrommel
US3408001A (en) 1965-10-18 1968-10-29 Alfa Laval Ab Sludge centrifuge
DE4004584A1 (de) 1990-02-15 1991-08-22 Krauss Maffei Ag Verfahren und vorrichtung zum betrieb einer filterzentrifuge
US5948271A (en) 1995-12-01 1999-09-07 Baker Hughes Incorporated Method and apparatus for controlling and monitoring continuous feed centrifuge
US5879279A (en) 1996-09-05 1999-03-09 U.S. Centrifuge Centrifugal separator apparatus having a vibration sensor
US20130012371A1 (en) 2010-04-02 2013-01-10 Pneumatic Scale Corporation Centrifuge System and Method
WO2014089749A1 (fr) 2012-12-11 2014-06-19 Intel Corporation Détection de contexte pour dispositifs informatiques

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4079151A1 (fr) * 2021-04-22 2022-10-26 Groschopp AG Drives & More Procédé d'extraction de rayons de miel et extracteur centrifuge à miel

Also Published As

Publication number Publication date
US10639649B2 (en) 2020-05-05
WO2016008755A1 (fr) 2016-01-21
CN106536062B (zh) 2019-12-10
CN106536062A (zh) 2017-03-22
EP3169440A1 (fr) 2017-05-24
US20170203307A1 (en) 2017-07-20

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