EP2125236B1 - Procédé de fonctionnement d'un broyeur à batteurs rotatifs et appareil de commande pour commander un broyeur à batteurs rotatifs - Google Patents

Procédé de fonctionnement d'un broyeur à batteurs rotatifs et appareil de commande pour commander un broyeur à batteurs rotatifs Download PDF

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Publication number
EP2125236B1
EP2125236B1 EP08734747.2A EP08734747A EP2125236B1 EP 2125236 B1 EP2125236 B1 EP 2125236B1 EP 08734747 A EP08734747 A EP 08734747A EP 2125236 B1 EP2125236 B1 EP 2125236B1
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EP
European Patent Office
Prior art keywords
power consumption
average value
sliding average
prebeater
drive
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
Application number
EP08734747.2A
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German (de)
English (en)
Other versions
EP2125236A1 (fr
Inventor
Manfred Gietz
Werner Koch
Volker SCHÜLE
Wolfgang Rieker
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.)
General Electric Technology GmbH
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General Electric Technology GmbH
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Publication date
Application filed by General Electric Technology GmbH filed Critical General Electric Technology GmbH
Priority to PL08734747T priority Critical patent/PL2125236T3/pl
Publication of EP2125236A1 publication Critical patent/EP2125236A1/fr
Application granted granted Critical
Publication of EP2125236B1 publication Critical patent/EP2125236B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C25/00—Control arrangements specially adapted for crushing or disintegrating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/10—Disintegrating by mills having rotary beater elements ; Hammer mills with horizontal rotor shaft and axial flow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C2210/00—Codes relating to different types of disintegrating devices
    • B02C2210/01—Indication of wear on beaters, knives, rollers, anvils, linings and the like

Definitions

  • the feeder is placed in front of the beater mill and crushes the lignite before it enters the beater mill.
  • the suggestor consists of a plurality of radially arranged to a rotational axis of the impact arms, at the outer ends of club heads are arranged. These solidly designed clubheads are usually made of steel and are exposed to heavy wear by the abrasive components of lignite. They are therefore releasably connected to the impact arms so that they are replaced after reaching the maximum allowable wear
  • Such a beater wheel mill is off DD301241 known.
  • club heads are replaced after 1,500-3,000 hours of operation.
  • the time of replacement of the club heads according to experience for example, an operating time of 1,800 hours, set.
  • the beater arms and other component of the proposal are affected in practice, the intervals within which the club heads are replaced, chosen relatively short and a certain "wear reserve" accepted.
  • the wear of the club heads can not be determined. For this, the mill must be stopped and the club heads visually checked for wear.
  • the wear of the club heads does not depend solely on the duration of operation, but also, for example, the proportion of abrasive particles in the coal, the time-controlled replacement of the club heads is usually not satisfactory, since usually the maximum operating time of the club heads is not utilized or it comes to unnecessarily many stoppages of the beater wheel mill.
  • the invention has for its object to provide a method for operating a beater mill with a suggestive, which allows optimal utilization of the life of the club heads and at the same time offers a high level of security against too long operation of the club heads.
  • the method according to the invention should adequately take into account the dependence of the service life of the club heads on the coal used and other external agents.
  • the object underlying the invention is achieved according to the invention in a method for operating a proposal of a beater mill, wherein the proposer has a plurality of plunger heads, characterized in that the power consumption of the drive of the proposer is detected and that determines the wear of the plunger heads in dependence of the power consumption of the drive becomes.
  • the method according to the invention is also very cost-effective to realize, since only the power consumption of the drive of the proposer is required as input to the process.
  • the power consumption is, if it is not already detected anyway, easy to capture, so that the hardware requirements in the form of sensors and signal lines are very low.
  • a sliding time average of the power consumption is formed, that the sliding time average of the power consumption is compared with a first threshold and that a first warning message is issued when the sliding time average of the power consumption of the first Threshold I warn undershoot.
  • This averaging acts as a low-pass filter, so that short-term fluctuations in power consumption do not lead to the issue of a warning message. This can cause short-term fluctuations in power consumption, such as those be caused by short-term fluctuations in the composition of the coal or due to other disturbing influences are filtered out.
  • the sliding time average of the power consumption with a second threshold I max . wear is compared and that a second warning message is issued when the sliding time average of the power consumption of the second threshold I max . Wear falls below.
  • a second warning message is output, which includes not only an optical but also an acoustic signal, for example.
  • the operator of the power plant is unequivocally pointed to the required replacement of the club heads.
  • the drive of the proposer is designed as an electric drive with an electric motor.
  • the time interval, starting in the present, is extended into the recent past, so that the moving time average determined in this way reflects the state of the club heads as promptly as possible.
  • the object mentioned at the outset is likewise achieved by a computer program and control and / or regulating device for a proposer, wherein the computer program and the control and / or regulating device work according to one of the methods according to the invention.
  • FIG. 1 is a known from the prior art beater wheel mill shown cut with a proposer.
  • a striking wheel 2 is arranged in a mill housing 1. Storage and drive of the beater 2 are in FIG. 1 not shown.
  • This suggestor consists essentially of a Vorellerrotor 3.
  • the Vorellerrotor 3 in turn consists of impact arms 3.1, which extend radially outward.
  • the Vortrainrrotor 3 is driven by an electric motor 5.
  • the storage of the proposal and the drive motor 5 are arranged in a frame 6.
  • FIG. 2 To clarify what is said in FIG. 2 a mill door 9 with the Vorellerrotor 3 and the associated shaft 10, which is part of the storage 7, shown. In this isometric view, the shape of the beater arms 3.1 and the beater heads 3.2 can be clearly seen.
  • the proposal heads 3.2 are made of a wear-resistant material, in particular steel, and are characterized by the abrasive components of the brown coal to be crushed with continuous operating time smaller and smaller. In addition, naturally all edges that cause a particularly effective comminution of brown coal, removed and the shape of the proposal heads is always "streamlined". As a result, the efficiency of the pre-crushing by the suggestor decreases, so that the power consumption of the motor 5 decreases. This connection is in FIG. 3 shown in diagram form.
  • FIG. 4 a flowchart of the method according to the invention is shown.
  • the procedure starts in a starting block.
  • a first step 15 the power consumption of the motor 5 is detected and a sliding time average I means formed.
  • this sliding time average I means is compared with a first threshold I warn . If the moving time average I M is greater than the first threshold, the process branches again before the first block 15. Otherwise, a first warning is output in a third block 19.
  • a fourth block 21 it is compared whether the power consumption I average is less than a second threshold value I max. Wear is. If this is not the case, the process branches back behind the start block. Otherwise, a second warning message is output in a fifth block 23.
  • the method then passes through a sixth block 25.
  • this sixth block it is checked whether the power consumption I mean is less than a third threshold I shutdown . If no, the program branches again behind the start block. Otherwise, in a seventh block 27, the beater wheel mill is turned off. Then the procedure ends.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Earth Drilling (AREA)

Claims (9)

  1. Procédé de fonctionnement d'un pré-broyeur motorisé d'un broyeur à percussion (2), dans lequel le pré-broyeur comporte au moins un rotor (3) avec plusieurs têtes de marteau (3.2), caractérisé en ce que la consommation d'énergie d'un entraînement (8) du pré-broyeur est détectée et en ce que l'usure des têtes de marteau (3.2) est déterminée en fonction de la consommation d'énergie de l'entraînement (8).
  2. Procédé selon la revendication 1, caractérisé en ce qu'une valeur moyenne temporelle glissante (lM) de la consommation d'énergie est formée, en ce que la valeur moyenne temporelle glissante (IM) de la consommation d'énergie est comparée à une première valeur de seuil (Iavertissement) et en ce qu'un premier message d'avertissement est fourni lorsque la valeur moyenne temporelle glissante (IM) de la consommation d'énergie devient inférieure à la première valeur de seuil (Iavertissement).
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que la valeur moyenne temporelle glissante (IM) de la consommation d'énergie est formée, en ce que la valeur moyenne temporelle glissante (IM) de la consommation d'énergie est comparée à une deuxième valeur de seuil (Imax. usure) et en ce qu'un deuxième message d'avertissement est fourni lorsque la valeur moyenne temporelle glissante (IM) de la consommation d'énergie devient inférieure à la deuxième valeur de seuil (Imax. usure).
  4. Procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce que la valeur moyenne temporelle glissante (IM) de la consommation d'énergie est formée, en ce que la valeur moyenne temporelle glissante (IM) de la consommation d'énergie est comparée à une troisième valeur de seuil (Icoupure) et en ce que le pré-broyeur est automatiquement arrêté lorsque la valeur moyenne temporelle glissante (IM) de la consommation d'énergie devient inférieure à la troisième valeur de seuil (Icoupure).
  5. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que l'entraînement est réalisé sous forme d'entraînement électrique avec un moteur électrique (8).
  6. Procédé selon la revendication 5, caractérisé en ce que la consommation d'énergie de l'entraînement électrique (8) est détectée via une mesure de courant.
  7. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que la consommation d'énergie de l'entraînement pendant un intervalle de temps d'une à 24 heures de fonctionnement, de préférence d'une à huit heures de fonctionnement, est exploitée pour déterminer la valeur moyenne temporelle glissante (IM).
  8. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que la consommation d'énergie de l'entraînement pendant une période antérieure récente est exploitée pour déterminer la valeur moyenne temporelle glissante (IM).
  9. Dispositif de commande et/ou de régulation pour un pré-broyeur, caractérisé en ce que toutes les étapes d'un procédé selon l'une quelconque des revendications 1 à 8 peuvent être exécutées avec ce dispositif.
EP08734747.2A 2007-03-23 2008-03-25 Procédé de fonctionnement d'un broyeur à batteurs rotatifs et appareil de commande pour commander un broyeur à batteurs rotatifs Active EP2125236B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL08734747T PL2125236T3 (pl) 2007-03-23 2008-03-25 Sposób sterowania działaniem młyna z kołami bijakowymi i urządzenie sterujące do sterowania młynem z kołami bijakowymi

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007014129A DE102007014129A1 (de) 2007-03-23 2007-03-23 Verfahren zum Betreiben einer Schlagradmühle und Steuergerät zur Steuerung einer Schlagradmühle
PCT/EP2008/002337 WO2008116624A1 (fr) 2007-03-23 2008-03-25 Procédé de fonctionnement d'un broyeur à batteurs rotatifs et appareil de commande pour commander un broyeur à batteurs rotatifs

Publications (2)

Publication Number Publication Date
EP2125236A1 EP2125236A1 (fr) 2009-12-02
EP2125236B1 true EP2125236B1 (fr) 2018-10-17

Family

ID=39590775

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08734747.2A Active EP2125236B1 (fr) 2007-03-23 2008-03-25 Procédé de fonctionnement d'un broyeur à batteurs rotatifs et appareil de commande pour commander un broyeur à batteurs rotatifs

Country Status (8)

Country Link
US (1) US8104700B2 (fr)
EP (1) EP2125236B1 (fr)
CN (1) CN101641159B (fr)
AU (1) AU2008232025B2 (fr)
CA (1) CA2680341C (fr)
DE (1) DE102007014129A1 (fr)
PL (1) PL2125236T3 (fr)
WO (1) WO2008116624A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10655851B2 (en) 2016-12-02 2020-05-19 General Electric Technology Gmbh System and method for preheating a beater mill

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2821637A1 (de) * 1978-05-18 1979-11-22 Babcock Ag Geblaeseschlaegermuehle
DE3136323A1 (de) * 1981-09-12 1983-03-31 Boehringer Mannheim Gmbh, 6800 Mannheim Verfahren zum betreiben einer kugelmuehle und entsprechende kugelmuehle
SE456138B (sv) * 1987-09-10 1988-09-12 Boliden Ab Forfarande for reglering av krosspaltbredden i en gyratorisk kross
DD301241A7 (de) * 1990-01-02 1992-11-05 Energiewerke Schwarze Pumpe Ag,De Einrichtung zur grenzwertanzeige des schlagplattenverschleisses an schlagraedern
DE19518390C2 (de) * 1995-05-19 1999-02-18 Inofex Gmbh Verfahren und Schaltungsanordnung zur Steuerung und Regelung eines Antriebssystems für die Verarbeitung eines Rohstoffes, vorzugsweise für Fleischereimaschinen
FI20021327A (fi) * 2002-07-05 2004-01-06 Metso Minerals Tampere Oy Menetelmä ja laitteisto murskaimen asetuksen mittaamiseksi ja säätämiseksi
US6467707B1 (en) * 2000-10-05 2002-10-22 Robert M. Williams Control logic for use in controlling grinding mill systems
SE524784C2 (sv) * 2003-02-10 2004-10-05 Sandvik Ab Sätt och anordning för styrning av kross samt visarinstrument för indikering av belastning av kross
US7028931B2 (en) * 2003-11-03 2006-04-18 Riley Power, Inc. Dynamic ring classifier for a coal pulverizer

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
AU2008232025A1 (en) 2008-10-02
WO2008116624A1 (fr) 2008-10-02
US20100108789A1 (en) 2010-05-06
CN101641159A (zh) 2010-02-03
CA2680341A1 (fr) 2008-10-02
CA2680341C (fr) 2013-02-05
US8104700B2 (en) 2012-01-31
EP2125236A1 (fr) 2009-12-02
PL2125236T3 (pl) 2019-01-31
AU2008232025B2 (en) 2010-11-25
DE102007014129A1 (de) 2008-09-25
CN101641159B (zh) 2013-07-24

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