EP3169440A1 - Procédé de régulation du fonctionnement d'une centrifugeuse - Google Patents

Procédé de régulation du fonctionnement d'une centrifugeuse

Info

Publication number
EP3169440A1
EP3169440A1 EP15735924.1A EP15735924A EP3169440A1 EP 3169440 A1 EP3169440 A1 EP 3169440A1 EP 15735924 A EP15735924 A EP 15735924A EP 3169440 A1 EP3169440 A1 EP 3169440A1
Authority
EP
European Patent Office
Prior art keywords
centrifuge
noise
noise level
measurement
manipulated variable
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
EP15735924.1A
Other languages
German (de)
English (en)
Other versions
EP3169440B1 (fr
Inventor
Markus Fleuter
Wilfried Mackel
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.)
GEA Mechanical Equipment GmbH
Original Assignee
GEA Mechanical Equipment GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
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Application filed by GEA Mechanical Equipment GmbH filed Critical GEA Mechanical Equipment GmbH
Publication of EP3169440A1 publication Critical patent/EP3169440A1/fr
Application granted granted Critical
Publication of EP3169440B1 publication Critical patent/EP3169440B1/fr
Active legal-status Critical Current
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Links

Classifications

    • 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, 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 noise level of the centrifuge is controlled by: a. at least one noise level limit is defined, b. during operation, i. during a rotation of the drum of the centrifuge, the noise of the centrifuge is measured with a sensor device, c. the data measured by the sensor device are forwarded to a control device, with which the measured data is compared with desired data and with which at least one manipulated variable is determined based on this comparison, and d. with the control device based on the at least one manipulated variable or with multiple manipulated variables so influence on the operation of the centrifuge is taken that the noise does not exceed the at least one noise level limit.
  • the current operation of the centrifuge is optimized in the centrifugal processing of a product, with no or only marginally error detection in the Rather, it focuses on minimizing the noise as a function of at least one or more predetermined limits.
  • the sound pressure level is referred to as a measure.
  • the A-weighted sound level for example, is modeled on the human ear in a frequency-dependent manner with correction factors so that the perceived volume can be simulated better. The calculation of the total sound pressure level then takes place
  • Fig. 1 shows a schematic representation of a separator for the centrifugal processing of a product
  • Fig. 2a and b show two views of another separator for centrifugal
  • Figures 3a and b show two views of a decanter for centrifugal processing of a product.
  • Fig. 4a and b show two diagrams, which means a noise reduction
  • 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 illustrated in Fig. 1 separator has a (here only schematically illustrated) rotatable drum 1 with preferably vertical axis of rotation, which has a (not shown here) drive spindle which is driven via a (not shown here) 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.
  • 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.
  • FIG. 2 also shows a microphone 7 and, alternatively, a sensor 7 'for measuring 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 outlet 6 of the drum first
  • the noise at emptying e.g. by means of a spool 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 sound 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 can be designed in another way, for example as a full-cup 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 1 m is set, for example, less than 1 m, in particular less than 50 cm, more preferably less than 30 cm.
  • FIGS. 2 and 3 using the example of a separator (FIG. 2) with a vertical axis of rotation with a structure-borne sound sensor 7 '(or transducer, in particular an electroacoustic transducer for structure-borne sound measurement) for measuring structure-borne noise at the oscillating system, here at one Drum surrounding hood 17, which is particularly well suited.
  • a separator FIG. 2
  • FIGS. 2 and 3 using the example of a separator (FIG. 2) with a vertical axis of rotation with a structure-borne sound sensor 7 '(or transducer, in particular an electroacoustic transducer for structure-borne sound measurement) for measuring structure-borne noise at the oscillating system, here at one Drum surrounding hood 17, which is particularly well suited.
  • a noise level limit I is 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 value I is not reached or undershot at nominal speed when starting up to a rated speed (operating times 1 to 2) and then during idling (ready for operation, operating times 2 to 3). Then, during operation of the centrifugal processing of the product (operating times 3 - 4), the noise level limit is reached and then exceeded.
  • control device 8 which also calculates a modified manipulated variable - here a changed speed. Thereafter (operating times 4 - 5), the control device 8 reduces the rotational speed (see also FIG. 1) until it again falls below the noise level limit value I.
  • This method can be used well for example in separators, in particular nozzle separators or decanters.
  • a noise level limit value I is to be respected, if possible not exceeded, or exceeded only briefly, but unlike in FIG. 4a it defines not as a peak value but as an average value of the noise level is.
  • 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.
  • 4b shows the noise development on so-called self-draining separators, in which solids are emptied at intervals by a brief opening of solids discharge openings.
  • 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.

Landscapes

  • Centrifugal Separators (AREA)

Abstract

L'invention concerne un procédé de régulation du fonctionnement d'une centrifugeuse comprenant un tambour rotatif (1), notamment un séparateur ou un décanteur, lors du traitement centrifuge d'un produit, notamment lors d'une clarification d'un produit et/ou lors d'une séparation d'un produit en différentes phases liquides avec le tambour (1). L'invention est caractérisée en ce que le bruit produit par la centrifugeuse est pris en compte lors de la régulation du fonctionnement de la centrifugeuse.
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 true EP3169440A1 (fr) 2017-05-24
EP3169440B1 EP3169440B1 (fr) 2019-09-04

Family

ID=53539700

Family Applications (1)

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

Country Status (4)

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

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3442618B1 (fr) * 2016-04-14 2021-03-17 Terumo BCT, Inc. Chargement d'article jetable
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
DE102021002118B3 (de) * 2021-04-22 2022-05-05 Groschopp Aktiengesellschaft Drives & More Verfahren zum Ausschleudern von Honigwaben und Honigschleuder

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE108467C (fr)
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
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
EP0868215B1 (fr) * 1995-12-01 2002-01-30 Baker Hughes Incorporated Procede de commande et de surveillance d'une centrifugeuse a alimentation en continu et appareil correspondant
US5879279A (en) * 1996-09-05 1999-03-09 U.S. Centrifuge Centrifugal separator apparatus having a vibration sensor
DE10024412A1 (de) 2000-05-19 2001-11-29 Westfalia Separator Ind Gmbh Verfahren zur Steuerung von Maschinen und Informationssystemen
US9427748B2 (en) 2010-04-02 2016-08-30 Pneumatic Scale Corporation Centrifuge system and method that determines fill status through vibration sensing
CN104011627B (zh) 2012-12-11 2017-12-05 英特尔公司 用于计算设备的情境感测

Also Published As

Publication number Publication date
CN106536062B (zh) 2019-12-10
WO2016008755A1 (fr) 2016-01-21
US20170203307A1 (en) 2017-07-20
EP3169440B1 (fr) 2019-09-04
CN106536062A (zh) 2017-03-22
US10639649B2 (en) 2020-05-05

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