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EP1955772A3 - Grinding device for a power plant - Google Patents

Grinding device for a power plant Download PDF

Info

Publication number
EP1955772A3
EP1955772A3 EP08100832A EP08100832A EP1955772A3 EP 1955772 A3 EP1955772 A3 EP 1955772A3 EP 08100832 A EP08100832 A EP 08100832A EP 08100832 A EP08100832 A EP 08100832A EP 1955772 A3 EP1955772 A3 EP 1955772A3
Authority
EP
European Patent Office
Prior art keywords
cavity
power plant
impact
grinder
grinding device
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
EP08100832A
Other languages
German (de)
French (fr)
Other versions
EP1955772B1 (en
EP1955772A2 (en
Inventor
Peter Helmut Breuhaus
Jaroslaw Szwedowicz
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.)
GE Vernova GmbH
Original Assignee
Alstom Technology AG
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
Application filed by Alstom Technology AG filed Critical Alstom Technology AG
Priority to PL08100832T priority Critical patent/PL1955772T3/en
Publication of EP1955772A2 publication Critical patent/EP1955772A2/en
Publication of EP1955772A3 publication Critical patent/EP1955772A3/en
Application granted granted Critical
Publication of EP1955772B1 publication Critical patent/EP1955772B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/14—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices
    • B02C13/18—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor
    • B02C13/1807—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor the material to be crushed being thrown against an anvil or impact plate
    • B02C13/1835—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor the material to be crushed being thrown against an anvil or impact plate by means of beater or impeller elements fixed in between an upper and lower rotor disc
    • 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
    • B02C13/26—Details
    • B02C13/28—Shape or construction of beater elements
    • B02C13/2804—Shape or construction of beater elements the beater elements being rigidly connected to the rotor
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

Die vorliegende Erfindung betrifft eine Mahleinrichtung (1) für eine Kraftwerksanlage, insbesondere eine Schlaggradmühle für ein Kohlekraftwerk, mit einem rotierenden Mahlwerkzeug (2) und einem dieses umgebenden Mahlgehäuse (3). Dabei weist das rotierende Mahlwerkzeug (2) sich beim Betrieb der Mahleinrichtung (1) abnutzende Schlag-/Prallelemente (4) auf, in denen zumindest ein Hohlraum (5) vorgesehen ist, der mit Innendruck beaufschlagbar ist und der beabstandet zu einer der Abnutzung ausgesetzten Seite (6) des Schlag-/Prallelements (4) angeordnet ist und zwar derart, dass bei einem definierten Abnutzungsgrad ein Öffnen des Hohlraumes (5) erfolgt. Hierbei ist der zumindest eine Hohlraum (5) kommunizierend mit einer zumindest den Druck im Hohlraum (5) erfassenden Kontrolleinrichtung (9) verbunden.

Figure imgaf001
The present invention relates to a grinder (1) for a power plant, in particular a percussion grade mill for a coal power plant, with a rotating grinding tool (2) and a grinding housing (3) surrounding it. In this case, the rotating grinding tool (2) during operation of the grinder (1) abnutzende impact / baffle elements (4), in which at least one cavity (5) is provided, which is acted upon by internal pressure and the spaced exposed to wear Side (6) of the impact / impact element (4) is arranged in such a way that at a defined degree of wear opening of the cavity (5). Here, the at least one cavity (5) communicating with a at least the pressure in the cavity (5) detecting control device (9) is connected.
Figure imgaf001
EP08100832.8A 2007-02-08 2008-01-23 Grinding device for a power plant Not-in-force EP1955772B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL08100832T PL1955772T3 (en) 2007-02-08 2008-01-23 Grinding device for a power plant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH2102007 2007-02-08

Publications (3)

Publication Number Publication Date
EP1955772A2 EP1955772A2 (en) 2008-08-13
EP1955772A3 true EP1955772A3 (en) 2008-08-27
EP1955772B1 EP1955772B1 (en) 2013-07-17

Family

ID=38009759

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08100832.8A Not-in-force EP1955772B1 (en) 2007-02-08 2008-01-23 Grinding device for a power plant

Country Status (4)

Country Link
EP (1) EP1955772B1 (en)
AU (1) AU2008200366B2 (en)
DK (1) DK1955772T3 (en)
PL (1) PL1955772T3 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116033969B (en) 2020-11-20 2025-11-25 巴斯夫欧洲公司 Jet mill

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3314618A (en) * 1965-01-14 1967-04-18 Allis Chalmers Mfg Co Crushing chamber wear indicator
DD301325A7 (en) * 1990-01-02 1992-12-03 Energiewerke Schwarze Pumpe Ag,De DEVICE FOR DISPLAYING THE LIMITING DURATION OF PUSH BUTTONS
US6129297A (en) * 1997-07-30 2000-10-10 Martin Marietta Materials, Inc. Cone crusher with wear indicator
JP2003225582A (en) * 2002-02-05 2003-08-12 Komatsu Zenoah Co Chipper

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3314618A (en) * 1965-01-14 1967-04-18 Allis Chalmers Mfg Co Crushing chamber wear indicator
DD301325A7 (en) * 1990-01-02 1992-12-03 Energiewerke Schwarze Pumpe Ag,De DEVICE FOR DISPLAYING THE LIMITING DURATION OF PUSH BUTTONS
US6129297A (en) * 1997-07-30 2000-10-10 Martin Marietta Materials, Inc. Cone crusher with wear indicator
JP2003225582A (en) * 2002-02-05 2003-08-12 Komatsu Zenoah Co Chipper

Also Published As

Publication number Publication date
AU2008200366B2 (en) 2012-02-23
DK1955772T3 (en) 2013-09-23
PL1955772T3 (en) 2013-11-29
AU2008200366A1 (en) 2008-08-28
EP1955772B1 (en) 2013-07-17
EP1955772A2 (en) 2008-08-13

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