EP0825383A2 - Grate plate - Google Patents

Grate plate Download PDF

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Publication number
EP0825383A2
EP0825383A2 EP97111615A EP97111615A EP0825383A2 EP 0825383 A2 EP0825383 A2 EP 0825383A2 EP 97111615 A EP97111615 A EP 97111615A EP 97111615 A EP97111615 A EP 97111615A EP 0825383 A2 EP0825383 A2 EP 0825383A2
Authority
EP
European Patent Office
Prior art keywords
grate
cover segment
plate
base body
grate plate
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
EP97111615A
Other languages
German (de)
French (fr)
Other versions
EP0825383B1 (en
EP0825383A3 (en
Inventor
Rolf Merz
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 Power Systems GmbH
Original Assignee
EVT Energie und Verfahrenstechnick GmbH
Alstom Energy Systems 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
Application filed by EVT Energie und Verfahrenstechnick GmbH, Alstom Energy Systems GmbH filed Critical EVT Energie und Verfahrenstechnick GmbH
Publication of EP0825383A2 publication Critical patent/EP0825383A2/en
Publication of EP0825383A3 publication Critical patent/EP0825383A3/en
Application granted granted Critical
Publication of EP0825383B1 publication Critical patent/EP0825383B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23H—GRATES; CLEANING OR RAKING GRATES
    • F23H3/00—Grates with hollow bars
    • F23H3/02—Grates with hollow bars internally cooled
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23H—GRATES; CLEANING OR RAKING GRATES
    • F23H17/00—Details of grates
    • F23H17/12—Fire-bars
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23H—GRATES; CLEANING OR RAKING GRATES
    • F23H7/00—Inclined or stepped grates
    • F23H7/06—Inclined or stepped grates with movable bars disposed parallel to direction of fuel feeding
    • F23H7/08—Inclined or stepped grates with movable bars disposed parallel to direction of fuel feeding reciprocating along their axes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23H—GRATES; CLEANING OR RAKING GRATES
    • F23H2900/00—Special features of combustion grates
    • F23H2900/03021—Liquid cooled grates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23H—GRATES; CLEANING OR RAKING GRATES
    • F23H2900/00—Special features of combustion grates
    • F23H2900/17002—Detachable or removable worn-out parts

Definitions

  • the invention relates to a grate plate for feed grates, in particular for feed grates from Waste incineration plants, the feed grate consisting of several mutually movable, there are stepped grate plate rows and the grate plate extends over the entire width of the feed grate or the rust track and this through water or with one opposite Water is cooled by high-boiling coolant.
  • feed grids are by transversely to the direction of transport of the material extending, gradually overlapping rows of grate plates or grate bars. Every second row of grate plates or grate bars usually leads to the transport of the firing material a thrust movement caused by a drive device.
  • the waste becomes one transported and the other mixed and stirred.
  • the waste on the feed grate it is dried, preheated, degassed and gasified one after the other and burned out the combustible.
  • EP 0 621 449 B1 has disclosed a water-cooled grate plate which overlaps extends the entire width of the combustion grate or grate track, which is made of sheet metal, forms a hollow body with top and bottom and at least on one side of the bottom a connection piece and on the other side at least one discharge pipe for the Has supply and discharge of a liquid medium flowing through them for their temperature control.
  • a disadvantage of the known grate plate has been shown that when a replacement is required a grate plate, z. B. by mechanical abrasion, by thermal or Corrosive wear or damage, one complete grate plate replaced must become. Due to the grate plates, some of which are up to 3.0 m wide, problems arise with the Removing and installing such grate plates due to their high weight and bulk. It is also not justifiable from an economic point of view, a partially worn grate plate to be exchanged completely.
  • the object of the present invention is to provide a grate plate, the aforementioned Avoids disadvantages.
  • FIG. 1 shows sections of the schematic longitudinal section through one of several rows of grate plates 26 formed grate 25 for the combustion of waste.
  • the feed grate 25 is usually slightly inclined in the transport direction of the firing material.
  • Transport and mixing or agitation of the firing material is due to the pushing movement of mechanical or hydraulic drive devices driven grate plate carrier 28 or rows of grate plates 26 causes, usually every second row of grate plates 26 is driven and the intermediate rows of grate plates 26 are stationary.
  • Take over the grate plate carrier 28 the function of supporting the grate plates 1 and also the pushing movement.
  • the feeder The primary combustion air to the firing material comes through the below the feed grate 25 arranged air zones 27 and the nozzle-shaped in the grate plates 1 Air gaps 6, the air zones 27 in the longitudinal direction and possibly also in the transverse direction of the feed grate 25 are divided into several zones.
  • grate plate 1 according to the invention, which extends over the entire width of the feed grate 25 or a grate track of a multi-track feed grate 25 and the from a base body 2 and, depending on the width of the grate plate 1, from one or more cover segments 3 exists.
  • the base body 2 forms the grate plate base 4, which on the following, underlying row of grate plates 26 rests and forms the cover segment (s) 3 form the grate plate body 5, the front end of which closes with the grate plate head 22.
  • the grate plate 1 enables the partial replacement of cover segments 3, which are more exposed to the firing material than the base body 2 and are therefore more worn or damaged.
  • the base body 2 consists of two side plates 7, one bottom plate 8 arranged therebetween, depending on the width, with one or more if necessary Intermediate plates 9 and at least one, flowed through by a coolant and between the Side plates 7 or, in the case of existing intermediate plates 9, also between side plates 7 and intermediate plates 9 and between the intermediate plates 9 arranged hollow profiles 10 is formed.
  • intermediate plates 9 these are preferably across the width of the base body 2 evenly distributed.
  • the hollow profile 10 is preferably formed as a rectangular hollow profile and is in the longitudinal direction Grate plate 1 (i.e. in the direction of transport) seen opposite the front edge of the back plate 14 and lower plate 15 (grate plate head 22) of the cover segment 3 set back in such a way that between the lower plate 15 and the upper edge of the hollow profile 10, a nozzle-shaped air gap 6 is formed for supplying primary combustion air into the firing material.
  • the nozzle-shaped Air gap 6 is thus formed by base body 2 and cover segment 3 and extends across the width of the grate plate 1, interrupted only if necessary by intermediate plates 9.
  • the front edge of the base plate 8 is also opposite the front edge of the back plate 14 set back to the main load of the Brennguttransportes to the front to shift the back plate 14.
  • a grate plate 1 extends depending on the width of the grate plate 1 between two side plates 7 or between side plates 7 and Intermediate plates 9 and possibly between the intermediate plates 9 of a base body 2.
  • the cover segment 3 consists of two side plates 11, support element 13 arranged between them, Back and bottom plate 14, 15.
  • Side plates 11, support element 13, back and bottom plate 14, 15 form one of a coolant, e.g. B. water, flowed through cavity 12, which with several, a labyrinth-forming partition plates 16 is provided.
  • a coolant e.g. B. water
  • the cover segment 3 and the base body 2 each have separate coolant inflows and drains 18, 19 which are arranged to the side of the air zones 27. At least one each Inflow 18 is on one side of the lower plate 15 of the cover segment 3 and the hollow profile 10 of the base body 2 and at least one drain 19 is on the other side of the lower plate 15 of the cover segment 3 and the hollow profiles 10 of the base body 2 are arranged. Inlets and outlets 18, 19 are equipped with devices 20, for. B. a connecting piece for connection formed by connecting lines, not shown. For grate plates 1 with several in a row arranged hollow profiles 10 and cover segments 3 is the coolant drain 19th through a connecting line 21 to the coolant inflow 18 of the adjacent hollow profile 10 or cover segment 3 connected.
  • the lower plate 15 is angled in the area of the grate plate head 22 such that the middle Outflow angle ⁇ of the nozzle-shaped air gap 6 is at an angle to the horizontal from 10 - 60 °.
  • Base body 2 and cover segment 3 are preferably the same from steel sheets and profiles Made of material and welded in each case.
  • the base plate 8 is opposite the back plate 14 formed from more wear-resistant material.
  • the cover segment (s) 3 are with their side plates 11 by at least two Connecting means 17, e.g. B. screw connection, with the side plates 7 and intermediate plates 9th of the base body 2 connected.
  • the air gap 6 can be arranged in parallel according to FIG. 8 by inserting a guide plate 23 Air gap walls should be formed. A divergent air gap 6, if necessary, is also through appropriate design of the lower plate 15 and the guide plate 23 possible (not shown).
  • the upper part of the hollow profile 10 is designed in accordance with the contour of the guide plate 23 or in another desired shape be (not shown).

Abstract

The grate plate extends over the complete width of the feed grate and the grate path and is cooled by water or by a coolant boiling at a higher temperature than water. The grate plate is formed from a basic body (2) forming a grate plate foot (4) and at least one cover segment (3) forming a grate plate body (5). The cover segment and the basic body are releasably connected to one another. The base body and the cover segment are formed with at least one coolant inflow and outflow. Between the basic body and the cover segment is an air gap (6). The basic body is formed from two side plates between which is a floor plate and possibly one or more intermediate plates and at least one hollow profile through which coolant flows. The hollow profile is formed between the side plates or between the side plates and the intermediate plates or between the intermediate plates.

Description

Die Erfindung betrifft eine Rostplatte für Vorschubroste, insbesondere für Vorschubroste von Abfallverbrennungsanlagen, wobei der Vorschubrost aus mehreren zueinander beweglichen, stufenförmigen Rostplattenreihen besteht und die Rostplatte sich über die ganze Breite des Vorschubrostes bzw. der Rostbahn erstreckt und diese durch Wasser oder mit einem gegenüber Wasser höher siedendem Kühlmittel gekühlt wird.The invention relates to a grate plate for feed grates, in particular for feed grates from Waste incineration plants, the feed grate consisting of several mutually movable, there are stepped grate plate rows and the grate plate extends over the entire width of the feed grate or the rust track and this through water or with one opposite Water is cooled by high-boiling coolant.

Roste zum Verbrennen von Abfall und anderen Feststoffen sind seit langem bekannt. Für die Verbrennung von Hausmüll und anderem Abfall haben sich sogenannte Schubverbrennungsroste bestens bewährt. Neben den Rückschubrosten haben vor allem die Vorschubroste in Abfallverbrennungsanlagen seit vielen Jahren Verwendung gefunden.Grates for burning waste and other solids have long been known. For the Combustion of household waste and other waste have become so-called thrust combustion grates well proven. In addition to the push-back grids, the feed grids in waste incineration plants in particular has been used for many years.

Diese bekannten Vorschubroste werden durch quer zur Transportrichtung des Brenngutes sich erstreckende, stufenweise übereinanderliegende Reihen von Rostplatten oder Roststäben gebildet. Zum Transport des Brenngutes führt üblicherweise jede zweite Rostplatten- bzw. Roststabreihe eine Schubbewegung aus, die durch eine Antriebsvorrichtung bewirkt wird.These well-known feed grids are by transversely to the direction of transport of the material extending, gradually overlapping rows of grate plates or grate bars. Every second row of grate plates or grate bars usually leads to the transport of the firing material a thrust movement caused by a drive device.

Durch die Vorschubbewegung der Rostplattenreihen bzw. Roststabreihen wird der Abfall zum einen transportiert und zum anderen vermischt und geschürt. Während des Transportes des Abfalles auf dem Vorschubrost wird dieser nacheinander getrocknet, vorgewärmt, entgast, vergast und das Verbrennliche ausgebrannt.Through the feed movement of the rows of grate plates or rows of grate bars, the waste becomes one transported and the other mixed and stirred. During the transport of the waste on the feed grate, it is dried, preheated, degassed and gasified one after the other and burned out the combustible.

Es ist ferner bekannt, derartige Rostplatten bzw. Roststäbe von Vorschubrosten durch Kühlwasser abzukühlen, um dadurch zum einen durch die geringere Temperatur kostengünstigere Rostplatten- bzw. Roststabmaterialien einsetzen zu können und geringeren Verschleiß an den Rostplatten bzw. Roststäben zu erzielen und zum anderen die Primärverbrennungsluft, die von unterteilten Luftzonen unterhalb des Vorschubrostes durch in den Rostplatten bzw. Roststäben befindlichen Luftdüsen dem Verbrennungsgut zugeführt wird, gezielt auf die Bedürfnisse des Verbrennungsgutes einzustellen. Eine Überdosierung der Primärluft für die Kühlung der Rostplatten bzw. -stäbe ist hierbei nicht erforderlich.It is also known that such grate plates or grate bars of feed grates by cooling water cool down, in order to be able to use cheaper grate plate or grate rod materials due to the lower temperature and less wear on the grate plates to achieve grate bars and on the other hand the primary combustion air, which by divided Air zones below the moving grate due to the fact that they are located in the grate plates or grate bars Air nozzles are supplied to the combustion goods, specifically to the needs of the combustion goods adjust. An overdose of the primary air for cooling the grate plates or rods are not required.

Durch die EP 0 621 449 B1 ist eine wassergekühlte Rostplatte bekannt geworden, die sich über die ganze Breite des Verbrennungsrostes bzw. der Rostbahn erstreckt, die aus Blech gefertigt ist, einen Hohlkörper mit Ober- und Unterseite bildet und auf der einen Seite der Unterseite mindestens einen Anschlußstutzen und auf der anderen Seite mindestens einen Abführstutzen für die Zu- und Abfuhr eines sie durchströmenden, flüssigen Mediums zu ihrer Temperierung aufweist.EP 0 621 449 B1 has disclosed a water-cooled grate plate which overlaps extends the entire width of the combustion grate or grate track, which is made of sheet metal, forms a hollow body with top and bottom and at least on one side of the bottom a connection piece and on the other side at least one discharge pipe for the Has supply and discharge of a liquid medium flowing through them for their temperature control.

Als nachteilig an der bekannten Rostplatte hat sich gezeigt, daß bei einem erforderlichen Austausch einer Rostplatte, hervorgerufen z. B. durch mechanischen Abrieb, durch thermischen oder korrosiven Verschleiß oder durch Beschädigung, jeweils eine komplette Rostplatte ausgewechselt werden muß. Durch die teilweise bis zu 3,0 m breiten Rostplatten ergeben sich Probleme mit dem Aus- und Einbau solcher Rostplatten infolge des hohen Eigengewichtes und der Sperrigkeit. Es ist ferner aus ökonomischer Sicht nicht vertretbar, eine lediglich partiell verschlissene Rostplatte komplett auszutauschen.A disadvantage of the known grate plate has been shown that when a replacement is required a grate plate, z. B. by mechanical abrasion, by thermal or Corrosive wear or damage, one complete grate plate replaced must become. Due to the grate plates, some of which are up to 3.0 m wide, problems arise with the Removing and installing such grate plates due to their high weight and bulk. It is also not justifiable from an economic point of view, a partially worn grate plate to be exchanged completely.

Die Aufgabe der vorliegenden Erfindung ist es, eine Rostplatte zu schaffen, die die vorgenannten Nachteile vermeidet.The object of the present invention is to provide a grate plate, the aforementioned Avoids disadvantages.

Diese Aufgabe wird durch die kennzeichnenden Merkmale des Patentanspruches 1 gelöst.This object is achieved by the characterizing features of patent claim 1.

Weitere vorteilhafte Ausgestaltungen der Erfindung sind den Unteransprüchen zu entnehmen.Further advantageous embodiments of the invention can be found in the subclaims.

Durch die erfindungsgemäße Lösung ergeben sich die folgenden Vorteile:The following advantages result from the solution according to the invention:

Partielle Austauschmöglichkeit von verschlissenen oder beschädigten Partien des dem Brenngut zugewandten Teiles der Rostplatte bei gleichzeitiger Weiterverwendung des Rostplattengrundkörpers und ggf. partiell nicht verschlissener oder beschädigter Rostplatten-Abdecksegmente.Partial exchange of worn or damaged parts of the kiln facing part of the grate plate while continuing to use the grate plate body and possibly not worn or damaged grate plate cover segments.

Die Erfindung wird anhand der Beschreibung und der Zeichnungen näher erläutert.The invention is explained in more detail with reference to the description and the drawings.

Es zeigt

Fig. 1
einen schematischen Längsschnitt durch einen aus mehreren Rostplattenreihen gebildeten Vorschubrost in Perspektivansicht,
Fig. 2
einen schematischen Längsschnitt durch eine erfindungsgemäße Rostplatte,
Fig. 3
Ansicht 'A' gemäß Fig. 2
Fig. 4
Draufsicht auf den Grundkörper der erfindungsgemäßen Rostplatte,
Fig. 5
Schnitt 'B-B' gemäß Fig. 4,
Fig. 6
Draufsicht auf das/die Abdecksegment(e) der erfindungsgemäßen Rostplatte,
Fig. 7
Schnitt 'C-C' gemäß Fig. 6,
Fig. 8
Längsschnitt durch eine erfindungsgemäße Rostplatte mit alternativem Luftspalt
It shows
Fig. 1
2 shows a schematic longitudinal section through a feed grate formed from several rows of grate plates in perspective view,
Fig. 2
2 shows a schematic longitudinal section through a grate plate according to the invention,
Fig. 3
View 'A' according to FIG. 2
Fig. 4
Top view of the base body of the grate plate according to the invention,
Fig. 5
Section 'BB' according to FIG. 4,
Fig. 6
Top view of the cover segment (s) of the grate plate according to the invention,
Fig. 7
Section 'CC' according to FIG. 6,
Fig. 8
Longitudinal section through a grate plate according to the invention with an alternative air gap

Fig. 1 zeigt ausschnittsweise den schematischen Längsschnitt durch einen aus mehreren Rostplattenreihen 26 gebildeten Vorschubrost 25 zur Verbrennung von Abfall. Der Vorschubrost 25 ist üblicherweise in Transportrichtung des Brenngutes leicht geneigt. Der Transport und die Vermischung bzw. Schürung des Brenngutes wird durch die Schubbewegung der von mechanischen oder hydraulischen Antriebseinrichtungen angetriebenen Rostplattenträger 28 bzw. Rostplattenreihen 26 bewirkt, wobei üblicherweise jede zweite Rostplattenreihe 26 angetrieben ist und die dazwischen liegenden Rostplattenreihen 26 stationär sind. Die Rostplattenträger 28 übernehmen dabei die Funktion der Abstützung der Rostplatten 1 sowie auch der Schubbewegung. Die Zuführung der Primärverbrennungsluft zum Brenngut erfolgt durch die unterhalb des Vorschubrostes 25 angeordneten Luftzonen 27 und die in den Rostplatten 1 befindlichen düsenförmigen Luftspalten 6, wobei die Luftzonen 27 in Längsrichtung und ggf. auch in Querrichtung des Vorschubrostes 25 in mehrere Zonen aufgeteilt sind.1 shows sections of the schematic longitudinal section through one of several rows of grate plates 26 formed grate 25 for the combustion of waste. The feed grate 25 is usually slightly inclined in the transport direction of the firing material. Transport and mixing or agitation of the firing material is due to the pushing movement of mechanical or hydraulic drive devices driven grate plate carrier 28 or rows of grate plates 26 causes, usually every second row of grate plates 26 is driven and the intermediate rows of grate plates 26 are stationary. Take over the grate plate carrier 28 the function of supporting the grate plates 1 and also the pushing movement. The feeder The primary combustion air to the firing material comes through the below the feed grate 25 arranged air zones 27 and the nozzle-shaped in the grate plates 1 Air gaps 6, the air zones 27 in the longitudinal direction and possibly also in the transverse direction of the feed grate 25 are divided into several zones.

Durch die Wasserkühlung der Rostplatten 1 kann sich die Zufuhr von Primärluft und ggf. inertem Gas, z. B. Rauchgas, auf die Bedürfnisse des Brenngutes und dessen Verbrennungsvorgang (Trocknung, Ent-, Vergasung, Ausbrand) beschränken.Due to the water cooling of the grate plates 1, the supply of primary air and possibly inert Gas, e.g. B. flue gas, on the needs of the fuel and its combustion process Limit (drying, degassing, gasification, burnout).

Fig. 2 und 3 zeigen eine erfindungsgemäße Rostplatte 1, die sich über die ganze Breite des Vorschubrostes 25 bzw. einer Rostbahn eines mehrbahnigen Vorschubrostes 25 erstreckt und die aus einem Grundkörper 2 und je nach Breite der Rostplatte 1 aus einem oder mehreren Abdecksegmenten 3 besteht. Der Grundkörper 2 bildet den Rostplattenfuß 4, der auf der nachfolgenden, darunter liegenden Rostplattenreihe 26 aufliegt und das bzw. die Abdecksegment(e) 3 bildet bzw. bilden den Rostplattenkörper 5, dessen vorderes Ende mit dem Rostplattenkopf 22 abschließt.2 and 3 show a grate plate 1 according to the invention, which extends over the entire width of the feed grate 25 or a grate track of a multi-track feed grate 25 and the from a base body 2 and, depending on the width of the grate plate 1, from one or more cover segments 3 exists. The base body 2 forms the grate plate base 4, which on the following, underlying row of grate plates 26 rests and forms the cover segment (s) 3 form the grate plate body 5, the front end of which closes with the grate plate head 22.

Die erfindungsgemäße Rostplatte 1 ermöglicht den partiellen Austausch von Abdecksegmenten 3, die gegenüber dem Grundkörper 2 dem Brenngut stärker ausgesetzt und somit eher verschlissen oder beschädigt sind. The grate plate 1 according to the invention enables the partial replacement of cover segments 3, which are more exposed to the firing material than the base body 2 and are therefore more worn or damaged.

Der Grundkörper 2 gemäß Fig. 4 und 5 einer erfindungsgemäßen Rostplatte 1 erstreckt sich über die gesamte Breite der Rostplatte 1. Der Grundkörper 2 besteht aus zwei Seitenplatten 7, einer dazwischen angeordneten Bodenplatte 8, abhängig von der Breite mit ggf. einer oder mehreren Zwischenplatten 9 und mindestens einem, von einem Kühlmittel durchströmten und zwischen den Seitenplatten 7 bzw. bei vorhandenen Zwischenplatten 9 auch zwischen Seitenplatten 7 und Zwischenplatten 9 und zwischen den Zwischenplatten 9 angeordnete Hohlprofile 10 gebildet ist.4 and 5 of a grate plate 1 according to the invention extends over the entire width of the grate plate 1. The base body 2 consists of two side plates 7, one bottom plate 8 arranged therebetween, depending on the width, with one or more if necessary Intermediate plates 9 and at least one, flowed through by a coolant and between the Side plates 7 or, in the case of existing intermediate plates 9, also between side plates 7 and intermediate plates 9 and between the intermediate plates 9 arranged hollow profiles 10 is formed.

Bei vorhandenen Zwischenplatten 9 sind diese bevorzugt über die Breite des Grundkörpers 2 gleichmäßig verteilt angeordnet.In the case of intermediate plates 9, these are preferably across the width of the base body 2 evenly distributed.

Das Hohlprofil 10 ist bevorzugt als Rechteck-Hohlprofil ausgebildet und ist in Längsrichtung der Rostplatte 1 (d. h. in Transportrichtung) gesehen gegenüber der Vorderkante des Rückenbleches 14 und Unterbleches 15 (Rostplattenkopf 22) des Abdecksegmentes 3 derart zurückversetzt, daß zwischen dem Unterblech 15 und der Oberkante des Hohlprofiles 10 ein düsenförmiger Luftspalt 6 zur Zuführung von Primärverbrennungsluft in das Brenngut gebildet wird. Der düsenförmige Luftspalt 6 wird somit durch Grundkörper 2 und Abdecksegment 3 gebildet und erstreckt sich über die Breite der Rostplatte 1, unterbrochen nur ggf. von Zwischenplatten 9.The hollow profile 10 is preferably formed as a rectangular hollow profile and is in the longitudinal direction Grate plate 1 (i.e. in the direction of transport) seen opposite the front edge of the back plate 14 and lower plate 15 (grate plate head 22) of the cover segment 3 set back in such a way that between the lower plate 15 and the upper edge of the hollow profile 10, a nozzle-shaped air gap 6 is formed for supplying primary combustion air into the firing material. The nozzle-shaped Air gap 6 is thus formed by base body 2 and cover segment 3 and extends across the width of the grate plate 1, interrupted only if necessary by intermediate plates 9.

In bevorzugter Weise wird auch die Vorderkante der Bodenplatte 8 gegenüber der Vorderkante des Rückenbleches 14 zurückversetzt, um die Hauptlast des Brennguttransportes auf die Stirnseite des Rückenbleches 14 zu verlagern.In a preferred manner, the front edge of the base plate 8 is also opposite the front edge of the back plate 14 set back to the main load of the Brennguttransportes to the front to shift the back plate 14.

Das Abdecksegment 3 gemäß Fig. 6 und 7 einer erfindungsgemäßen Rostplatte 1 erstreckt sich je nach Breite der Rostplatte 1 zwischen zwei Seitenplatten 7 bzw. zwischen Seitenplatten 7 und Zwischenplatten 9 und ggf. zwischen den Zwischenplatten 9 eines Grundkörpers 2. Das Abdecksegment 3 besteht aus zwei Seitenplatten 11, dazwischen angeordnetem Trägerelement 13, Rücken- und Unterblech 14, 15. Seitenplatten 11, Trägerelement 13, Rücken- und Unterblech 14, 15 bilden einen von einem Kühlmittel, z. B. Wasser, durchströmten Hohlraum 12, der mit mehreren, ein Labyrinth bildenden Trennblechen 16 versehen ist.6 and 7 of a grate plate 1 according to the invention extends depending on the width of the grate plate 1 between two side plates 7 or between side plates 7 and Intermediate plates 9 and possibly between the intermediate plates 9 of a base body 2. The cover segment 3 consists of two side plates 11, support element 13 arranged between them, Back and bottom plate 14, 15. Side plates 11, support element 13, back and bottom plate 14, 15 form one of a coolant, e.g. B. water, flowed through cavity 12, which with several, a labyrinth-forming partition plates 16 is provided.

Das Abdecksegment 3 und der Grundkörper 2 haben jeweils separate Kühlmittelzuflüsse und -abflüsse 18, 19, die zu der Seite der Luftzonen 27 hin angeordnet sind. Jeweils mindestens ein Zufluß 18 ist an einer Seite des Unterbleches 15 des Abdecksegmentes 3 sowie des Hohlprofiles 10 des Grundkörpers 2 und jeweils mindestens ein Abfluß 19 ist an der anderen Seite des Unterbleches 15 des Abdecksegmentes 3 sowie der Hohlprofile 10 des Grundkörpers 2 angeordnet. Zu- und Abflüsse 18, 19 sind mit Einrichtungen 20, z. B. einem Anschlußstutzen, zum Anschließen von nicht dargestellten Anschlußleitungen ausgebildet. Bei Rostplatten 1 mit mehreren hintereinander angeordneten Hohlprofilen 10 und Abdecksegmenten 3 ist der Kühlmittelabfluß 19 durch eine Verbindungsleitung 21 mit dem Kühlmittelzufluß 18 des angrenzenden Hohlprofiles 10 bzw. Abdecksegmentes 3 verbunden.The cover segment 3 and the base body 2 each have separate coolant inflows and drains 18, 19 which are arranged to the side of the air zones 27. At least one each Inflow 18 is on one side of the lower plate 15 of the cover segment 3 and the hollow profile 10 of the base body 2 and at least one drain 19 is on the other side of the lower plate 15 of the cover segment 3 and the hollow profiles 10 of the base body 2 are arranged. Inlets and outlets 18, 19 are equipped with devices 20, for. B. a connecting piece for connection formed by connecting lines, not shown. For grate plates 1 with several in a row arranged hollow profiles 10 and cover segments 3 is the coolant drain 19th through a connecting line 21 to the coolant inflow 18 of the adjacent hollow profile 10 or cover segment 3 connected.

Das Unterblech 15 ist im Bereich des Rostplattenkopfes 22 derart angewinkelt, daß der mittlere Ausströmwinkel α des düsenförmigen Luftspaltes 6 gegenüber der Horizontalen einen Winkel von 10 - 60° bildet.The lower plate 15 is angled in the area of the grate plate head 22 such that the middle Outflow angle α of the nozzle-shaped air gap 6 is at an angle to the horizontal from 10 - 60 °.

Grundkörper 2 und Abdecksegment 3 sind bevorzugt aus Stahlblechen und -profilen gleichen Werkstoffes gefertigt und jeweils verschweißt.Base body 2 and cover segment 3 are preferably the same from steel sheets and profiles Made of material and welded in each case.

In einer weiteren bevorzugten Ausführungsform ist die Bodenplatte 8 gegenüber dem Rückenblech 14 aus verschleißfesterem Material ausgebildet.In a further preferred embodiment, the base plate 8 is opposite the back plate 14 formed from more wear-resistant material.

Das bzw. die Abdecksegment(e) 3 sind mit ihren Seitenplatten 11 durch jeweils mindestens zwei Verbindungsmittel 17, z. B. Schraubverbindung, mit den Seitenplatten 7 bzw. Zwischenplatten 9 des Grundkörpers 2 verbunden.The cover segment (s) 3 are with their side plates 11 by at least two Connecting means 17, e.g. B. screw connection, with the side plates 7 and intermediate plates 9th of the base body 2 connected.

Der Luftspalt 6 kann gemäß Fig. 8 durch Einsetzen eines Leitbleches 23 mit parallel angeordneten Luftspaltwänden ausgebildet sein. Auch ein divergenter Luftspalt 6, falls erforderlich, ist durch entsprechende Ausbildung des Unterbleches 15 und des Leitbleches 23 möglich (nicht abgebildet).The air gap 6 can be arranged in parallel according to FIG. 8 by inserting a guide plate 23 Air gap walls should be formed. A divergent air gap 6, if necessary, is also through appropriate design of the lower plate 15 and the guide plate 23 possible (not shown).

Anstelle der Verwendung eines gesonderten Leitbleches 23 kann der obere Teil des Hohlprofiles 10 gleich entsprechend der Kontur des Leitbleches 23 oder in anderer gewünschter Form ausgebildet sein (nicht abgebildet). Instead of using a separate guide plate 23, the upper part of the hollow profile 10 is designed in accordance with the contour of the guide plate 23 or in another desired shape be (not shown).

LegendeLegend

11
RostplatteGrate plate
22nd
GrundkörperBasic body
33rd
AbdecksegmentCover segment
44th
RostplattenfußRust plate base
55
RostplattenkörperGrate plate body
66
LuftspaltAir gap
77
Seitenplatte GrundkörperSide plate base body
88th
BodenplatteBase plate
99
ZwischenplatteIntermediate plate
1010th
HohlprofilHollow profile
1111
Seitenplatte AbdecksegmentSide plate cover segment
1212th
Hohlraumcavity
1313
TrägerelementCarrier element
1414
RückenblechBack panel
1515
UnterblechLower plate
1616
TrennblechDivider
1717th
VerbindungsmittelLanyard
1818th
KühlmittelzuflußCoolant inflow
1919th
KühlmittelabflußCoolant drain
2020th
Einrichtung für Zu- bzw. AbflußDevice for inflow or outflow
2121
VerbindungsleitungConnecting line
2222
RostplattenkopfGrate head
2323
LeitblechBaffle
2424th
2525th
VorschubrostMoving grate
2626
RostplattenreihenRows of grate plates
2727
LuftzonenAir zones
2828
RostplattenträgerGrate plate support

Claims (8)

Rostplatte für Vorschubroste, insbesondere für Vorschubroste von Abfallverbrennungsanlagen, wobei der Vorschubrost aus mehreren zueinander beweglichen, stufenförmigen Rostplattenreihen besteht und die Rostplatte sich über die ganze Breite des Vorschubrostes bzw. der Rostbahn erstreckt und diese durch Wasser oder mit einem gegenüber Wasser höher siedendem Kühlmittel gekühlt wird, dadurch gekennzeichnet, daß die Rostplatte (1) aus einem einen Rostplattenfuß (4) bildenden Grundkörper (2) und mindestens einem einen Rostplattenkörper (5) bildenden Abdecksegment (3) gebildet ist und Abdecksegment (3) und Grundkörper (2) miteinander lösbar verbunden sind, der Grundkörper (2) und das Abdecksegment (3) jeweils mit mindestens einem Kühlmittelzu- und -abfluß (18, 19) ausgebildet sind, und zwischen Grundkörper (2) und Abdecksegment (3) ein Luftspalt (6) ausgebildet ist. Grate plate for feed grates, in particular for feed grates of waste incineration plants, the feed grate consisting of a plurality of step-shaped grate plate rows which can be moved relative to one another and the grate plate extends over the entire width of the feed grate or the grate track and is cooled by water or with a coolant which boils higher than water , characterized in that the grate plate (1) is formed from a base body (2) forming a grate plate base (4) and at least one cover segment (3) forming a grate plate body (5) and cover segment (3) and base body (2) are detachably connected to one another, the base body (2) and the cover segment (3) are each formed with at least one coolant inflow and outflow (18, 19), and an air gap (6) is formed between the base body (2) and the cover segment (3). Rostplatte nach Anspruch 1, dadurch gekennzeichnet, daß der Grundkörper (2) aus zwei Seitenplatten (7), einer dazwischen angeordneten Bodenplatte (8), ggf. einer oder mehreren Zwischenplatten (9) und mindestens einem, von einem Kühlmittel durchströmten und zwischen den Seitenplatten (7) bzw. Seitenplatten (7) und Zwischenplatten (9) bzw. Zwischenplatten (9) angeordnetem, Hohlprofil (10) gebildet ist, wobei das Hohlprofil (10) mit mindestens einer Einrichtung (20) zum Kühlmittelzufluß (18) an der einen Seite des Hohlprofiles (10) und mit mindestens einer Einrichtung (20) zum Kühlmittelabfluß (19) an der anderen Seite des Hohlprofiles (10) ausgebildet ist und bei über die Breite des Grundkörpers (2) unterteilten Hohlprofilen (10) die Einrichtung (20) des Kühlmittelabflusses (19) durch eine Verbindungsleitung (21) mit der Einrichtung (20) des Kühlmittelzuflusses (18) des angrenzenden Hohlprofiles (10) verbunden ist, das Abdecksegment (3) aus zwei Seitenplatten (11) und dazwischen angeordnetem Trägerelement (13), Rücken- und Unterblech (14, 15) gebildet ist, wobei Seitenplatten (11), Trägerelement (13), Rücken- und Unterblech (14, 15) einen von einem Kühlmittel durchströmten Hohlraum (12) bilden sowie mehrere im Hohlraum (12) ein Labyrinth bildende Trennbleche (16), wobei das Unterblech (15) mit mindestens einer Einrichtung (20) zum Kühlmittelzufluß (18) an der einen Seite des Abdecksegmentes (3) und mit mindestens einer Einrichtung (20) zum Kühlmittelabfluß (19) an der anderen Seite des Abdecksegmentes (3) ausgebildet ist und bei mehreren Abdecksegmenten (3) die Einrichtung (20) des Kühlmittelabflusses (19) durch eine Verbindungsleitung (21) mit der Einrichtung (20) des Kühlmittelzuflusses (18) des angrenzenden Abdecksegmentes (3) verbunden ist, und mit mindestens zwei Mitteln (17) je Seitenplatte (7, 11) zum lösbaren Verbinden von Grundkörper (2) und Abdecksegment (3). Grate plate according to claim 1, characterized in that the base body (2) consists of two side plates (7), a base plate (8) arranged between them, optionally one or more intermediate plates (9) and at least one coolant flow and between the side plates (7) or side plates (7) and intermediate plates (9) or intermediate plates (9) arranged, hollow profile (10) is formed, wherein the hollow profile (10) with at least one device (20) for coolant inflow (18) on one side of the hollow profile (10) and with at least a device (20) for coolant drain (19) is formed on the other side of the hollow profile (10) and, in the case of hollow profiles (10) divided over the width of the base body (2), the device (20) of the coolant drain (19) is connected by a connecting line 21) is connected to the device (20) of the coolant inflow (18) of the adjacent hollow profile (10), the cover segment (3) is formed from two side plates (11) and a support element (13), back and bottom plate (14, 15) arranged between them, side plates (11), support element (13), back and bottom plate (14, 15 ) form a cavity (12) through which a coolant flows and a plurality of separating plates (16) forming a labyrinth in the cavity (12), the lower plate (15) having at least one device (20) for supplying coolant (18) on one side of the cover segment (3) and with at least one device (20) for the coolant drain (19) on the other side of the cover segment (3) and in the case of several cover segments (3) the device (20) of the coolant drain (19) through a connecting line (21) is connected to the device (20) of the coolant inflow (18) of the adjacent cover segment (3), and with at least two means (17) per side plate (7, 11) for releasably connecting the base body (2) and cover segment (3). Rostplatte nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Grundkörper (2) und das Abdecksegment (3) aus Stahlblech und ggf. Stahlprofilen gefertigt sind.Grate plate according to claim 1 or 2, characterized in that the base body (2) and the cover segment (3) is made of sheet steel and, if necessary, steel profiles. Rostplatte nach einem der vorgenannten Ansprüche, dadurch gekennzeichnet, daß das Material der Bodenplatte (8) des Grundkörpers (2) gegenüber dem Material des Rückenbleches (14) des Abdecksegmentes (3) verschleißfester ist.Grate plate according to one of the preceding claims, characterized in that the material the base plate (8) of the base body (2) relative to the material of the back plate (14) of the cover segment (3) is more wear-resistant. Rostplatte nach einem der vorgenannten Ansprüche, dadurch gekennzeichnet, daß das Hohlprofil (10) als Rechteckprofil ausgebildet ist.Grate plate according to one of the preceding claims, characterized in that the Hollow profile (10) is designed as a rectangular profile. Rostplatte nach einem der vorgenannten Ansprüche, dadurch gekennzeichnet, daß der Luftspalt (6) an seiner oberen Peripherie durch das Unterblech (15) des Abdecksegmentes (3) und an seiner unteren Peripherie durch die Oberkante des Hohlprofiles (10) des Grundkörpers (2) begrenzt wird und düsenförmig ausgebildet ist.Grate plate according to one of the preceding claims, characterized in that the Air gap (6) on its upper periphery through the lower plate (15) of the cover segment (3) and on its lower periphery through the upper edge of the hollow profile (10) of the base body (2) is limited and is nozzle-shaped. Rostplatte nach einem der vorgenannten Ansprüche, dadurch gekennzeichnet, daß der mittlere Ausströmwinkel α des düsenförmigen Luftspaltes (6) gegenüber der Horizontalen einen Winkel von 10 - 60° bildet.Grate plate according to one of the preceding claims, characterized in that the middle Outflow angle α of the nozzle-shaped air gap (6) relative to the horizontal one Forms an angle of 10 - 60 °. Rostplatte nach einem der vorgenannten Ansprüche, dadurch gekennzeichnet, daß die Vorderkante des Grundkörpers (2) gegenüber der Vorderkante des Abdecksegmentes (3) zurückversetzt ist.Grate plate according to one of the preceding claims, characterized in that the front edge of the base body (2) in relation to the front edge of the cover segment (3) is.
EP97111615A 1996-08-10 1997-07-09 Grate plate Expired - Lifetime EP0825383B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19632316 1996-08-10
DE19632316A DE19632316C1 (en) 1996-08-10 1996-08-10 Grate plate for feed grate for rubbish burning plant

Publications (3)

Publication Number Publication Date
EP0825383A2 true EP0825383A2 (en) 1998-02-25
EP0825383A3 EP0825383A3 (en) 1998-09-16
EP0825383B1 EP0825383B1 (en) 2002-01-23

Family

ID=7802317

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97111615A Expired - Lifetime EP0825383B1 (en) 1996-08-10 1997-07-09 Grate plate

Country Status (7)

Country Link
EP (1) EP0825383B1 (en)
AT (1) ATE212429T1 (en)
CZ (1) CZ291546B6 (en)
DE (2) DE19632316C1 (en)
HU (1) HU218993B (en)
PL (1) PL321534A1 (en)
SK (1) SK106697A3 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19851471A1 (en) * 1998-11-09 2000-05-11 Mitteldeutsche Feuerungs Und U Feed grate cover for combustion furnace has narrow S-shaped gaps to allow very little material to fall through and uses stair-step-type bars in close contact
DE19912944C1 (en) * 1999-03-23 2000-07-27 Didier Werke Ag Rubbish burning grate cheek sealing body is for steel lining of chamber in which grate is arranged, and is formed by steel plate supporting fireproof layer on chamber side
FR2894012A1 (en) * 2005-11-28 2007-06-01 Cometal France Sarl Bar for household rubbish combustion furnace grid, has lower surface carried by outsole which is provided at main part of bar body that comprises shield possessing surface supported on plane, where shield and outsole form wearing part
CN112610955A (en) * 2020-12-18 2021-04-06 上海康恒环境股份有限公司 Combined grate bar structure of incinerator grate

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19753981C2 (en) * 1997-12-05 2000-04-06 Alstom Energy Syst Gmbh Liquid-cooled grate plate
EP0924464A1 (en) * 1997-12-19 1999-06-23 KOCH, Theodor Grate for a combustion plant and method for its cooling
DE19860553C2 (en) * 1998-12-22 2001-03-29 Mannesmann Ag Liquid-cooled combustion grate
DE19860552C2 (en) * 1998-12-22 2001-02-08 Mannesmann Ag Coolable combustion grate

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0621449B1 (en) 1993-04-20 1995-08-09 Doikos Investments Ltd Method for the combustion of refuse on a combustion grate as well as combustion grate for carrying out the method and grate plate for manufacturing such a combustion grate

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2833255A1 (en) * 1978-07-28 1980-02-07 Pauli Gmbh Waermetechnik AIR COOLED ROD
IT1235900B (en) * 1985-10-11 1992-12-02 Vaifro Vittorio Bonomelli MOBILE STEAM COMBUSTION GRID FOR SOLID FUELS, IN PARTICULAR SOLID URBAN AND SIMILAR WASTE
FR2694376B1 (en) * 1992-07-31 1994-09-30 A3C Metal Bar for household waste incineration grid.

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0621449B1 (en) 1993-04-20 1995-08-09 Doikos Investments Ltd Method for the combustion of refuse on a combustion grate as well as combustion grate for carrying out the method and grate plate for manufacturing such a combustion grate

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19851471A1 (en) * 1998-11-09 2000-05-11 Mitteldeutsche Feuerungs Und U Feed grate cover for combustion furnace has narrow S-shaped gaps to allow very little material to fall through and uses stair-step-type bars in close contact
DE19912944C1 (en) * 1999-03-23 2000-07-27 Didier Werke Ag Rubbish burning grate cheek sealing body is for steel lining of chamber in which grate is arranged, and is formed by steel plate supporting fireproof layer on chamber side
FR2894012A1 (en) * 2005-11-28 2007-06-01 Cometal France Sarl Bar for household rubbish combustion furnace grid, has lower surface carried by outsole which is provided at main part of bar body that comprises shield possessing surface supported on plane, where shield and outsole form wearing part
CN112610955A (en) * 2020-12-18 2021-04-06 上海康恒环境股份有限公司 Combined grate bar structure of incinerator grate

Also Published As

Publication number Publication date
DE59706162D1 (en) 2002-03-14
HUP9701047A3 (en) 1999-09-28
HUP9701047A2 (en) 1998-04-28
PL321534A1 (en) 1998-02-16
SK106697A3 (en) 1998-06-03
HU218993B (en) 2001-01-29
DE19632316C1 (en) 1997-09-04
CZ291546B6 (en) 2003-04-16
EP0825383B1 (en) 2002-01-23
HU9701047D0 (en) 1997-08-28
CZ249297A3 (en) 1998-03-18
EP0825383A3 (en) 1998-09-16
ATE212429T1 (en) 2002-02-15

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