EP3218114B1 - Verfahren zum überwachen und/oder regeln des betriebs einer zentrifuge - Google Patents
Verfahren zum überwachen und/oder regeln des betriebs einer zentrifuge Download PDFInfo
- Publication number
- EP3218114B1 EP3218114B1 EP15784698.1A EP15784698A EP3218114B1 EP 3218114 B1 EP3218114 B1 EP 3218114B1 EP 15784698 A EP15784698 A EP 15784698A EP 3218114 B1 EP3218114 B1 EP 3218114B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- force
- centrifuge
- drum
- force sensors
- measurement
- 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.)
- Active
Links
- 238000000034 method Methods 0.000 title claims description 31
- 230000001105 regulatory effect Effects 0.000 title claims description 14
- 238000012544 monitoring process Methods 0.000 title claims description 8
- 238000005259 measurement Methods 0.000 claims description 41
- 238000012545 processing Methods 0.000 claims description 5
- 230000001276 controlling effect Effects 0.000 claims description 3
- 239000007791 liquid phase Substances 0.000 claims description 3
- 238000004458 analytical method Methods 0.000 claims description 2
- 238000011161 development Methods 0.000 claims 1
- 230000008569 process Effects 0.000 description 8
- 239000007787 solid Substances 0.000 description 8
- 238000010327 methods by industry Methods 0.000 description 4
- 230000003068 static effect Effects 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
Images
Classifications
-
- 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
- B04B9/12—Suspending rotary bowls ; Bearings; Packings for bearings
-
- 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
- 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 monitoring and / or controlling and / or regulating the operation of a centrifuge, in particular a separator, during the centrifugal processing of a product, in particular when clarifying a product and / or when separating a product into different liquid phases.
- the DE 4111933 C1 discloses drain monitoring based on a measurement of the increase in the current of the drive motor of the drum or a decrease in the speed of the drum.
- Another generic method is from the DE 102008062055 A1 is known, which discloses a method for detecting a machine state, in which an evaluation of measured values for detecting the machine state takes place, the machine controller assigning and evaluating the measured value of a sensor to a machine component as a function of the control state.
- the invention achieves this aim by the subject matter of claim 1. Thereafter, force measurements are carried out and evaluated with one or more force sensors. If there is a deviation from a specified behavior, an output is made. Optionally or alternatively, the force measurements or the evaluations of the force measurements are used in the control and / or regulation of the operation of the centrifuge.
- the ongoing operation of the centrifuge during centrifugal processing of a product is thus monitored by one or more force measurements with one or more force sensors.
- the operation is then regulated. Fault detection is possible, and preferably also optimization of the operation of the centrifuge by regulation as a function of predetermined limits of the force measurement (s).
- the force measurements are also set in relation to one or more reference measurements, which makes it possible to assess parameters of the current state of the machine, the process engineering process, or their respective changes.
- machine functions are then initiated to change the operating speed and / or process engineering process functions such as draining or changing the feed quantity.
- an adjustment run to carry out the reference measurement is carried out once or repeatedly.
- Force measuring rings and / or shear force transducers are preferably used to carry out the force measurements.
- the machine control (a control and preferably regulating device) initiates machine and process or process actions to optimize the operation and their effects supervised.
- a centrifuge in particular a separator with a vertical axis of rotation, is preferably set up on four elastic (foot) elements in which a drum is supported on elastic support bearings in the region of the drum bearing. This allows the supported system to move within narrow limits Movements result from the machine dynamic as well as the process engineering state of the centrifuge.
- the static and dynamic forces that act on the foot elements and / or the support bearings on the drum bearing can be determined or measured in each case via the force sensors in the form of force measurements.
- Fig. 1 shows a schematic representation of a separator for centrifugal processing of a product, in particular for clarifying a product from solids (or for concentrating such a phase) and / or for separating a product into different liquid phases.
- the illustrated separator - and preferably designed for continuous operation - has a rotatable drum 1 (shown here only schematically) with a preferably vertical axis of rotation.
- a separator plate package can be arranged in the drum 1 (not shown here).
- the drum 1 also has a drive spindle 2 which can be driven by a drive connection to a drive motor 3.
- the drive motor 3 could also be arranged as a direct drive in a direct extension of the drive spindle (not shown here).
- a lead 4 for a product to be processed leads into the drum 1.
- Liquids of different densities and possibly solids can be discharged through one or more drains 5a, 5b and possibly solids discharge openings 6 are guided out of the drum 1 (shown schematically).
- controllable (and preferably throttling) valves are provided (not shown here).
- the drum 1 is surrounded by a hood 7.
- the rotatable drum 1 and preferably the drive / motor 3 (and possibly further elements such as the hood 7 are arranged and supported on a machine frame 8.
- the machine frame 8 is in turn via one or more (preferably three or four) foot elements 9a , b, c, d, which has a spring element or — as here, for example, as a round bearing 14 — can be set up on a floor, in particular a foundation 10 (see Fig. 1 and 2nd )
- one or more force sensors 11a to 11d and / or 11e are measured in each case (step I in Fig. 4 ).
- the force sensors or force transducers 11a-11d and / or 11e can be provided in different areas of the centrifuge, in particular at points at which elements of the rotating system are resiliently supported on an abutment, i.e. in areas in which a movement of the rotating system in narrow limits is permitted or takes place. These movements result from the dynamic state of the machine, but also from the technical process, or changes in the centrifuge. The static and dynamic forces that act in this way can be measured via the force measurement.
- one or more, and particularly preferably all, of the foot elements 9a-d are each assigned one of the force sensors 11a, b, c, d for carrying out the force measurements on the respective foot elements 9a-9d ( Fig. 1 , 2nd ).
- one or more, particularly preferably at least 3, elastic support bearings 18 arranged in a circular symmetry in the region of a drum bearing are each assigned to one of the force sensors 11e for carrying out the force measurements on the respective support bearing 18 ( Fig. 1 , 3rd ). It is advantageous if on the support bearing or bearings 18 for resilient elastic support of a bearing housing 19 one of the force sensors 11e is provided on a section 20 of the machine frame 8 for carrying out the force measurements on the respective support bearing 18, for example below the respective support bearing 18 and above the machine frame section 20.
- the force sensors 11a-11d and / or 11e are preferably designed for measuring pressure forces.
- the force sensors 11a-11e are preferably connected, for example via a wire connection or wirelessly, to a control and / or regulating device 12 of the separator, on which their measurement results are evaluated (step II in FIG Fig. 4 ).
- the control device 12 is preferably designed to display the determined values, for example on an output unit such as a display (step III in FIG Fig. 4 ) and / or to control the operation of the centrifuge (step IV in Fig. 4 ). If there is a deviation from a pre-stored behavior, for example a deviation from one or more target values, a warning signal can be output.
- the measured data can also be used to control and / or regulate functions such as emptying solids during operation of the centrifuge (step IV).
- the control device 12 preferably also controls the drive motor 2 (directly or via an intermediate device).
- one of the force sensors 11a-11d designed for force measurement is used on each of the (one or more pieces) foot elements 9a, 9b, 9c, 9d.
- This movement of the separator results from the machine dynamic but also the process engineering state of the centrifuge, in particular the drum 1.
- the static and dynamic forces which act on the foot arrangements 9a-9d or the support bearings 18 of the machine can be measured by two, three or four foot elements (11a - 11d) or on the support bearings (11e) can be measured.
- a force sensor 11a designed as a force measuring ring is provided on a foot element 9a. It is arranged between the machine frame 8 and the actual foot element 9a, which here is a spring element and a cover 14 surrounded circular bearing 15. The circular bearing 15 is in turn supported on a foundation frame 16 which forms part of the foundation / floor 10.
- the elements of machine frame 8, circular bearing 14 and foundation frame 16 can be connected to one another with one or more bolts 17 oriented vertically here. This structure is preferably implemented on at least one or preferably on all of the foot arrangements 9a-9d.
- a preload is generated in the force sensor 11a by means of the fastening nut 13 and the bolt 17.
- the measurement takes place continuously continuously or at intervals.
- the data measured by the force sensor (s) 11a-11d and / or 11e are forwarded to the control (and preferably regulating) device 12, where they are evaluated. Only one force can be measured at a time. However, it is also conceivable to record the results of all force sensors and to link and evaluate them appropriately in order to use them to create specifications for the control.
- the recorded measurement data are compared with target data. At least one manipulated variable is determined on the basis of this comparison.
- the control and regulating device 12 influences the operation of the centrifuge with the aid of the at least one manipulated variable (or several manipulated variables) in such a way that the controlled variable - the force and / or the deflection on the foot elements - is changed so that it is a assumes desired behavior.
- measurements with which the weight of the centrifuge and / or changes in the weight of the centrifuge are / are determined can be carried out in a simple manner with the one or more force sensor (s). So it makes sense to carry out at least a first reference measurement with an empty drum (without product). A second measurement can then be carried out in an ideal operating state with a drum loaded with product. Deviations from these two states can then be determined and displayed. Caking inside the drum can be a cause of deviations from the desired states after the end of operation but also during operation. It may therefore make sense to conclude that the weight in the drum is increased if a limit value is exceeded.
- Suitable force sensors are e.g. HBM force measuring rings, BROSA shear force transducers.
- the forces are measured continuously or at intervals that are less than or equal to 1 min.
- the method according to the invention 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 separating plate package in the drum.
- a centrifuge in particular a separator with a vertical axis of rotation in continuous operation, which has a separating means such as a separating plate package in the drum.
- the centrifuge can be designed in a different way, for example as a solid-bowl screw centrifuge, in particular with a horizontal axis of rotation (not shown here).
Landscapes
- Centrifugal Separators (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014116404.0A DE102014116404A1 (de) | 2014-11-11 | 2014-11-11 | Verfahren zum Überwachen und/oder Regeln des Betriebs einer Zentrifuge |
PCT/EP2015/074615 WO2016074905A1 (de) | 2014-11-11 | 2015-10-23 | Verfahren zum überwachen und/oder regeln des betriebs einer zentrifuge |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3218114A1 EP3218114A1 (de) | 2017-09-20 |
EP3218114B1 true EP3218114B1 (de) | 2020-07-15 |
Family
ID=54347547
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15784698.1A Active EP3218114B1 (de) | 2014-11-11 | 2015-10-23 | Verfahren zum überwachen und/oder regeln des betriebs einer zentrifuge |
Country Status (9)
Country | Link |
---|---|
US (1) | US10639650B2 (zh) |
EP (1) | EP3218114B1 (zh) |
JP (1) | JP6698254B2 (zh) |
KR (1) | KR20170082513A (zh) |
CN (1) | CN107073485B (zh) |
BR (1) | BR112017006982B1 (zh) |
DE (1) | DE102014116404A1 (zh) |
RU (1) | RU2691346C2 (zh) |
WO (1) | WO2016074905A1 (zh) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015119165B4 (de) * | 2015-11-06 | 2022-06-09 | Gea Mechanical Equipment Gmbh | Verfahren zur Klärung eines fließfähigen Produktes mit einer Zentrifuge, insbesondere einem Separator |
EP3533522A1 (en) | 2018-02-28 | 2019-09-04 | Alfa Laval Corporate AB | Centrifugal separator and method of operating a centrifugal separator |
WO2019209732A1 (en) * | 2018-04-23 | 2019-10-31 | Carbon, Inc. | Resin extractor for additive manufacturing |
WO2020069152A1 (en) | 2018-09-26 | 2020-04-02 | Carbon, Inc. | Spin cleaning method and apparatus for additive manufacturing |
EP3877156B1 (en) | 2019-01-07 | 2023-01-04 | Carbon, Inc. | Systems and methods for resin recovery in additive manufacturing |
CN109876931B (zh) * | 2019-04-08 | 2020-07-03 | 浙江大学 | 一种超重力离心机不平衡量监测方法 |
US11440259B2 (en) | 2020-01-31 | 2022-09-13 | Carbon, Inc. | Resin reclamation centrifuge rotor for additively manufactured objects |
EP4225560A1 (en) | 2020-10-09 | 2023-08-16 | Carbon, Inc. | Vapor spin cleaning of additively manufactured parts |
DE102023105408A1 (de) | 2023-03-06 | 2024-09-12 | Gea Westfalia Separator Group Gmbh | Zentrifuge |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3541844A (en) * | 1969-05-07 | 1970-11-24 | Lebow Associates Inc | Force-measuring washer and readout arrangement |
SE422893B (sv) | 1975-02-12 | 1982-04-05 | Westfalia Separator Ag | Elastiskt lagrad centrifug for klarning och separering av vetskor |
DE2626763A1 (de) * | 1976-06-15 | 1977-12-22 | Heinkel Maschinenbau Kg Ernst | Vorrichtung und verfahren zur automatischen steuerung des speisungszyklus von diskontinuierlich arbeitenden zentrifugen |
JP3182761B2 (ja) * | 1990-10-29 | 2001-07-03 | 日本電気株式会社 | 遠心脱水乾燥装置 |
DE4111933C1 (en) | 1991-04-12 | 1992-06-17 | Westfalia Separator Ag, 4740 Oelde, De | Monitoring and regulating amt. emptied from self-emptying centrifuge - measuring current consumption of electromotor before and after partial emptying and comparing difference with stipulated value |
DE4316081C1 (de) * | 1993-05-13 | 1994-08-04 | Heinkel Ind Zentrifugen | Vorrichtung zur Durchführung einer Gewichtsmessung bei Zentrifugen |
US5604314A (en) * | 1994-10-26 | 1997-02-18 | Bonneville Scientific Incorporated | Triaxial normal and shear force sensor |
WO1996032190A1 (en) * | 1995-04-11 | 1996-10-17 | Floriall Holdings Limited | Process and reactor for heterogeneous exothermic synthesis of formaldehyde |
WO1997020634A1 (en) * | 1995-12-01 | 1997-06-12 | Baker Hughes Incorporated | Method and apparatus for controlling and monitoring continuous feed centrifuge |
DE19732006C1 (de) * | 1997-07-25 | 1998-11-19 | Heinkel Ind Zentrifugen | Vorrichtung zur Durchführung einer Gewichtsmessung bei Zentrifugen |
CN2307634Y (zh) * | 1997-07-25 | 1999-02-17 | 陈聪海 | 离心分离机自动脱渣的装置 |
US7102621B2 (en) * | 1997-09-30 | 2006-09-05 | 3M Innovative Properties Company | Force measurement system correcting for inertial interference |
JP2002248377A (ja) * | 2001-02-23 | 2002-09-03 | Joban Boring:Kk | 連続式遠心分離装置 |
KR20050101600A (ko) | 2004-04-19 | 2005-10-25 | 주식회사 한랩 | 원심 분리기 |
DE102008062055B4 (de) | 2008-12-12 | 2021-07-22 | Gea Mechanical Equipment Gmbh | Verfahren zur Überwachung der automatisierten Entleerung einer Zentrifuge |
SE533360C2 (sv) | 2009-02-24 | 2010-09-07 | Alfa Laval Corp Ab | Centrifugalseparator och metod för separering |
CN202301673U (zh) * | 2011-05-17 | 2012-07-04 | 长沙易达仪器有限公司 | 减震垫及具有该减震垫的离心机 |
CN203342956U (zh) * | 2013-07-09 | 2013-12-18 | 中国工程物理研究院总体工程研究所 | 土工离心机新型平衡自调节系统 |
US20140235420A1 (en) * | 2014-04-28 | 2014-08-21 | HilFlo, LLC | Control system for a decanter centrifuge |
-
2014
- 2014-11-11 DE DE102014116404.0A patent/DE102014116404A1/de not_active Withdrawn
-
2015
- 2015-10-23 KR KR1020177010169A patent/KR20170082513A/ko not_active IP Right Cessation
- 2015-10-23 EP EP15784698.1A patent/EP3218114B1/de active Active
- 2015-10-23 WO PCT/EP2015/074615 patent/WO2016074905A1/de active Application Filing
- 2015-10-23 US US15/525,828 patent/US10639650B2/en active Active
- 2015-10-23 BR BR112017006982-2A patent/BR112017006982B1/pt active IP Right Grant
- 2015-10-23 RU RU2017118571A patent/RU2691346C2/ru active
- 2015-10-23 JP JP2017517246A patent/JP6698254B2/ja active Active
- 2015-10-23 CN CN201580057607.6A patent/CN107073485B/zh active Active
Non-Patent Citations (1)
Title |
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None * |
Also Published As
Publication number | Publication date |
---|---|
CN107073485B (zh) | 2020-04-24 |
RU2691346C2 (ru) | 2019-06-11 |
WO2016074905A1 (de) | 2016-05-19 |
BR112017006982B1 (pt) | 2021-06-08 |
KR20170082513A (ko) | 2017-07-14 |
DE102014116404A1 (de) | 2016-05-12 |
US10639650B2 (en) | 2020-05-05 |
JP6698254B2 (ja) | 2020-05-27 |
JP2017533089A (ja) | 2017-11-09 |
RU2017118571A3 (zh) | 2019-02-13 |
CN107073485A (zh) | 2017-08-18 |
EP3218114A1 (de) | 2017-09-20 |
BR112017006982A2 (pt) | 2017-12-12 |
RU2017118571A (ru) | 2018-12-14 |
US20170312763A1 (en) | 2017-11-02 |
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