EP2511609B1 - Modular grate bar, overlay element and foot element for same and moving grate of a combustion assembly - Google Patents

Modular grate bar, overlay element and foot element for same and moving grate of a combustion assembly Download PDF

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Publication number
EP2511609B1
EP2511609B1 EP12002650.5A EP12002650A EP2511609B1 EP 2511609 B1 EP2511609 B1 EP 2511609B1 EP 12002650 A EP12002650 A EP 12002650A EP 2511609 B1 EP2511609 B1 EP 2511609B1
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Prior art keywords
foot
grate
section
elements
overlay
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German (de)
French (fr)
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EP2511609A2 (en
EP2511609A3 (en
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Mathias Breiding
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WVT Breiding GmbH
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Wvt Breiding GmbH
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Priority claimed from DE202011005341.5U external-priority patent/DE202011005341U1/en
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    • 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
    • F23H2900/17002—Detachable or removable worn-out parts

Definitions

  • the invention relates to a grate bar, a support element and a foot element therefor, as well as a moving grate of an incinerator according to the preamble of claims 1, 4, 5 and 6, respectively.
  • each grate bar has a downwardly extending support section for connection to a holding or propulsion element for holding or to and fro Moving the grate bar relative to a vertically adjacent grate bar, in the front area a feed section for advancing the items to be fired on the grate bar located vertically below, and a surface for items to be fired.
  • Such grate bars are also from EP 2 306 086 A2 known.
  • the known grate bars for advancing grids have a number of disadvantages.
  • the known grate bars tend to clog air nozzles in the surface. This leads to the fact that the air flow is increasingly fed to the items to be fired via neighboring air nozzles and these air nozzles burn out. Firing residue trapped between the feed section and the surface can also cause high wear.
  • the grate bar when a grate bar is worn, the grate bar must always be replaced as a whole, for which purpose the entire staircase-shaped arrangement often has to be dismantled. This leads to long and costly downtimes. Storage is also expensive because large grate bars must always be kept in stock.
  • the known grate bars cannot be adapted to special firing conditions and different items to be fired.
  • the invention is therefore based on the object of creating a grate bar, a support element and a foot element for it, as well as a moving grate of an incinerator according to the preamble of claims 1, 4, 5 and 6, which have a flexible configuration, a enable increased service life as well as simplified handling, assembly, disassembly and repair.
  • the operation of the system can also be better controlled.
  • a grate bar for a moving grate of an incineration plant is created with a burning path section for items to be fired, a front foot section and a rear support section, which is modularly composed of individual exchangeable elements that are positively and / or non-positively connected to one another.
  • the grate bar can be flexibly assembled from suitable elements, in particular at least three and up to 20, 25 or 30 elements, according to the respective requirements. If there are signs of wear, breakage and the like, only the affected elements need to be replaced. This saves costs because less material has to be replaced.
  • the geometry of the grate bar can be changed flexibly and storage becomes cheaper, since only those elements have to be kept that frequently and / or quickly wear and / or fail.
  • the grate bar is composed of a support element forming the support section, one or more, in particular 2, 3, 4, 5, 6, 7 or 8 to 10, 15, 20, 25 or 30, the focal path section forming the focal path section, and a foot element forming the foot section.
  • This division has proven to be particularly useful, since it has the highest flexibility in the configuration and the greatest possible mechanical stability with the best wear resistance.
  • the support element preferably forms a support surface with a support section for placing the grate bar on a support bar or the like for the purpose of holding or moving it back and forth, and a connecting section for connecting to the foot section.
  • the connecting section has a rib, preferably two parallel lateral ribs, with part of a dovetail connection, for example the dovetail recess, and optionally a preferably central rib with a recess for a rod-shaped connecting element, which extends through a corresponding rib of a foot portion can extend.
  • a rib preferably two parallel lateral ribs, with part of a dovetail connection, for example the dovetail recess, and optionally a preferably central rib with a recess for a rod-shaped connecting element, which extends through a corresponding rib of a foot portion can extend.
  • the foot element can also have a connecting section for connection to the support section and a foot as well as a connecting rib extending between the connecting section and the foot for a focal path section, whereby a connection that can be easily and quickly established and released is created.
  • the fuel path element can have ribs on the underside with recesses for a rod-shaped connecting element. In this way, one or, if necessary, several fuel path elements can be fastened securely and releasably and preferably with play on the foot element in a simple manner with only one connection such as a rod or the like.
  • the focal path element is expediently provided with lateral recesses which form air nozzles of any shape and number. Recesses in adjacent focal path elements can jointly form air nozzles. Since the focal path elements can be assembled at a distance from one another due to the assembly clearance and, in the fastened state, can preferably be moved in a vertical direction, the air nozzles are self-cleaning. The high level of wear and burn-through known from the prior art is minimized.
  • the individual elements can each have different mechanical properties such as heat resistance and abrasion resistance and / or be formed from a different material and / or have a different material. This enables flexible adaptation to the particular conditions of the incineration system and to the items to be fired, and elements that are particularly heavily or lightly stressed can each be optimally designed.
  • the invention also creates a support element and a foot element for a grate bar, each of which is marketable by itself.
  • the components can be cast parts and / or made of steel / sheet metal alloys.
  • grate bar 1 for a moving grate of an incinerator is composed of a support element 2, for example four fuel path elements 3 and a foot element 4, which In the Figs. 2 to 4 are shown in detail.
  • the support element 2 has a surface which can be provided with a flat reinforcing element.
  • a support section 5 is provided for connection and / or for placing on a fastening and / or a drive mechanism for moving back and forth, preferably in the plane of the surface.
  • a dovetail connection 6 or the like on here two lateral ribs 7 of the support element 2 and on two likewise lateral ribs 8 of the foot element 4 connects the two to one another.
  • the foot element 4 is secured on the support element 2 by a screw connection 9 or the like.
  • the ribs 10 also have recesses 11 such as aligned bores into which a rod 12 can be pushed in order to fasten the focal path elements 3, which also have ribs 13 with recesses 11 here in pairs.
  • the end of the rod 12 can be fastened with closing elements 14 such as welded-on washers, with play preferably remaining so that the focal path elements 3 remain movable laterally by at least 2, 5, 7, 10, 15, 20 mm, in particular due to the hot air movements caused by combustion.
  • Air nozzles 16 can be provided in the surface of the fuel path elements 3 and in particular, as shown, on the mutually adjoining sides 15 of the fuel path elements 3, which here run obliquely and possibly tapered, for example.
  • the sides 15 can also be free of air nozzles, cf. Fig. 5 to prevent the grate from falling out in the discharge zone.
  • the modular structure also allows a different flexible adaptation of the different levels of a step grating on the basis of the standard components. For example, one stage can be designed with and another without air nozzles.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Incineration Of Waste (AREA)
  • Solid-Fuel Combustion (AREA)

Description

GEBIET DER ERFINDUNGFIELD OF THE INVENTION

Die Erfindung betrifft einen Roststab, ein Auflageelement und ein Fußelement dafür sowie einen Vorschubrost einer Verbrennungsanlage nach dem Oberbegriff des Anspruchs 1, 4, 5 bzw. 6.The invention relates to a grate bar, a support element and a foot element therefor, as well as a moving grate of an incinerator according to the preamble of claims 1, 4, 5 and 6, respectively.

HINTERGRUND DER ERFINDUNGBACKGROUND OF THE INVENTION

Bei dem aus der EP 1 975 507 A1 bekannten Vorschubrost für Feuerungsanlagen sind mehrere stufenförmige Roststäbe treppenartig übereinander angeordnet. Das Brenngut wird dabei durch Relativbewegung der Roststäbe In horizontaler Richtung entlang der so gebildeten Roststabtreppe nach unten verschoben. Jeder Roststab weist dabei im hinteren Bereich eine sich nach unten erstreckende Auflagepartie zur Verbindung mit einem Halte- oder Vortriebselement zum Halten oder Hin- und Herbewegen des Roststabs relativ zu einem vertikal benachbarten Roststab, im vorderen Bereich einen Vorschubabschnitt zum Vorschieben von Brenngut auf dem vertikal unterhalb benachbarten Roststab und sowie eine Oberläche für Brenngut auf. Derartige Roststäbe sind auch aus der EP 2 306 086 A2 bekannt. Schließlich offenbart WO 2010/115541 einen Roststab mit den Merkmalen des Oberbegriffs des Anspruchs 1.The one from the EP 1 975 507 A1 known moving grate for firing systems, several stepped grate bars are arranged one above the other like a staircase. The material to be fired is shifted downwards by the relative movement of the grate bars in the horizontal direction along the grate bar staircase formed in this way. In the rear area, each grate bar has a downwardly extending support section for connection to a holding or propulsion element for holding or to and fro Moving the grate bar relative to a vertically adjacent grate bar, in the front area a feed section for advancing the items to be fired on the grate bar located vertically below, and a surface for items to be fired. Such grate bars are also from EP 2 306 086 A2 known. Finally revealed WO 2010/115541 a grate bar with the features of the preamble of claim 1.

Die bekannten Roststäbe für Vorschubroste weisen eine Vielzahl von Nachteilen auf.The known grate bars for advancing grids have a number of disadvantages.

So neigen die bekannten Roststäbe dazu, dass sich Luftdüsen in der Oberfläche zusetzen. Dies führt dazu, dass der Luftstrom verstärkt über benachbarte Luftdüsen dem Brenngut zugeführt wird und diese Luftdüsen ausbrennen. Auch zwischen dem Vorschubabschnitt und der Oberfläche eingeklemmte Brenngutrückstände können einen hohen Verschleiß bewirken. Zudem muss bei Verschleiß eines Roststabes der Roststab stets als Ganzes ausgewechselt werden, wozu häufig die gesamte treppenförmige Anordnung zu demontieren ist. Dies führt zu langen und kostspieligen Stillstandzeiten. Auch ist die Lagerhaltung teuer, da stets große Roststäbe vorzuhalten sind. Schließlich können die bekannten Roststäbe nicht an besondere Feuerungsbedingungen und unterschiedliches Brenngut angepasst werden.The known grate bars, for example, tend to clog air nozzles in the surface. This leads to the fact that the air flow is increasingly fed to the items to be fired via neighboring air nozzles and these air nozzles burn out. Firing residue trapped between the feed section and the surface can also cause high wear. In addition, when a grate bar is worn, the grate bar must always be replaced as a whole, for which purpose the entire staircase-shaped arrangement often has to be dismantled. This leads to long and costly downtimes. Storage is also expensive because large grate bars must always be kept in stock. Finally, the known grate bars cannot be adapted to special firing conditions and different items to be fired.

ZUSAMMENFASSUNG DER ERFINDUNGSUMMARY OF THE INVENTION

Der Erfindung liegt daher die Aufgabe zu Grunde, einen Roststab, ein Auflageelement und ein Fußelement dafür sowie einen Vorschubrost einer Verbrennungsanlage nach dem Oberbegriff des Anspruchs 1, 4, 5 bzw. 6 zu schaffen, die bei einfacher und kostengünstiger Herstellbarkeit eine flexible Konfiguration, eine erhöhte Lebensdauer sowie eine vereinfachte Handhabung, Montage, Demontage und Reparatur ermöglichen. Auch die Fahrweise der Anlage kann besser gesteuert werden.The invention is therefore based on the object of creating a grate bar, a support element and a foot element for it, as well as a moving grate of an incinerator according to the preamble of claims 1, 4, 5 and 6, which have a flexible configuration, a enable increased service life as well as simplified handling, assembly, disassembly and repair. The operation of the system can also be better controlled.

Diese Aufgabe wird entsprechend den Merkmalen des Anspruchs 1, 4, 5 bzw. 6 gelöst.This object is achieved in accordance with the features of claims 1, 4, 5 and 6, respectively.

Demnach wird ein Roststab für einen Vorschubrost einer Verbrennungsanlage, mit einem Brennbahnabschnitt für Brenngut, einem frontseitigen Fußabschnitt und einem hinteren Auflageabschnitt, geschaffen, der modular aus einzelnen auswechselbaren Elementen zusammengesetzt ist, die form- und/oder kraftschlüssig miteinander verbunden sind.According to this, a grate bar for a moving grate of an incineration plant is created with a burning path section for items to be fired, a front foot section and a rear support section, which is modularly composed of individual exchangeable elements that are positively and / or non-positively connected to one another.

Hierdurch kann der Roststab flexibel den jeweiligen Bedürfnissen entsprechend aus geeigneten Elementen, insbesondere mindestens drei und bis zu 20 , 25 oder 30 Elementen, zusammengesetzt werden. Bei Verschleißerscheinungen, Bruch und dergleichen müssen nur die betroffenen Elemente ersetzt werden. Dies spart Kosten, da weniger Material ersetzt werden muss. Die Geometrie des Roststabs ist flexibel änderbar und die Lagerhaltung wird günstiger, da nur noch diejenigen Elemente vorgehalten werden müssen, die häufig und/oder schnell verschleißen und/oder versagen.As a result, the grate bar can be flexibly assembled from suitable elements, in particular at least three and up to 20, 25 or 30 elements, according to the respective requirements. If there are signs of wear, breakage and the like, only the affected elements need to be replaced. This saves costs because less material has to be replaced. The geometry of the grate bar can be changed flexibly and storage becomes cheaper, since only those elements have to be kept that frequently and / or quickly wear and / or fail.

Der Roststab ist aus einem den Auflageabschnitt bildenden Auflageelement, einem oder mehreren, insbesondere 2, 3, 4, 5, 6, 7 oder 8 bis 10, 15, 20, 25 oder 30 den Brennbahnabschnitt bildenden Brennbahnelementen und einem den Fußabschnitt bildenden Fußelement zusammengesetzt. Diese Aufteilung hat sich als besonders zweckmäßig erwiesen, da sie die höchste Flexibilität bei der Konfiguration und eine größtmögliche mechanische Stabilität bei bester Verschleißresistenz aufweist.The grate bar is composed of a support element forming the support section, one or more, in particular 2, 3, 4, 5, 6, 7 or 8 to 10, 15, 20, 25 or 30, the focal path section forming the focal path section, and a foot element forming the foot section. This division has proven to be particularly useful, since it has the highest flexibility in the configuration and the greatest possible mechanical stability with the best wear resistance.

Das Auflageelement bildet bevorzugt eine Auflagefläche mit einer Auflagepartie zur Auflage des Roststabs auf einen Auflagestab oder dergleichen zwecks Halten oder Hin- und Herbewegen, sowie einen Verbindungsabschnitt zur Verbindung mit dem Fußabschnitt.The support element preferably forms a support surface with a support section for placing the grate bar on a support bar or the like for the purpose of holding or moving it back and forth, and a connecting section for connecting to the foot section.

Der Verbindungsabschnitt weist dabei eine Rippe, bevorzugt zwei parallele seitliche Rippen, mit einem Teil einer Schwalbenschwanzverbindung, beispielsweise der Schwalbenschwanzausnehmung, und ggf. eine bevorzugt mittlere Rippe mit einer Aussparung für ein stabförmiges Verbindungselement aufweisen, das sich durch eine entsprechende Rippe eines Fußabschnitts erstrecken kann. Dies ermöglicht eine einfache Montage durch Einschieben in die Schwalbenschwanzverbindung und eine einfache Fixierung In dieser Position durch Verschraubung oder dergleichen.The connecting section has a rib, preferably two parallel lateral ribs, with part of a dovetail connection, for example the dovetail recess, and optionally a preferably central rib with a recess for a rod-shaped connecting element, which extends through a corresponding rib of a foot portion can extend. This enables simple assembly by pushing into the dovetail connection and simple fixation in this position by screwing or the like.

Das Fußelement kann ebenfalls eine einen Verbindungsabschnitt zur Verbindung mit dem Auflageabschnitt und einen Fuß sowie eine sich zwischen dem Verbindungsabschnitt und dem Fuß erstreckende Verbindungsrippe für einen Brennbahnabschnitt aufweisen, wodurch eine einfache und schnell herstell- sowie lösbare Verbindung geschaffen wird.The foot element can also have a connecting section for connection to the support section and a foot as well as a connecting rib extending between the connecting section and the foot for a focal path section, whereby a connection that can be easily and quickly established and released is created.

Das Brennbahnelement kann unterseitige Rippen mit Ausnehmungen für ein stabförmiges Verbindungselement aufweisen. So können auf einfache Weise ein oder ggf. mehrere Brennbahnelemente mit nur einer Verbindung wie etwa einer Stange oder dergleichen am Fußelement sicher und lösbar sowie vorzugsweise mit Spiel befestigt werden.The fuel path element can have ribs on the underside with recesses for a rod-shaped connecting element. In this way, one or, if necessary, several fuel path elements can be fastened securely and releasably and preferably with play on the foot element in a simple manner with only one connection such as a rod or the like.

Das Brennbahnelement ist zweckmäßigerweise mit seitlichen Ausnehmungen versehen, die Luftdüsen beliebiger Form und Anzahl bilden. Ausnehmungen benachbarter Brennbahnelemente können dabei gemeinsam Luftdüsen bilden. Da die Brennbahnelemente mit einem montagespielbedingten Abstand zueinander montiert werden können und in befestigtem Zustand bevorzugt In vertikaler Richtung gegeneinander beweglich sein können, sind die Luftdüsen selbstreinigend. Der aus dem Stand der Technik bekannte hohe Verschleiß nebst Durchbrennen wird minimiert.The focal path element is expediently provided with lateral recesses which form air nozzles of any shape and number. Recesses in adjacent focal path elements can jointly form air nozzles. Since the focal path elements can be assembled at a distance from one another due to the assembly clearance and, in the fastened state, can preferably be moved in a vertical direction, the air nozzles are self-cleaning. The high level of wear and burn-through known from the prior art is minimized.

Die einzelnen Elemente können Jeweils unterschiedliche mechanische Eigenschaften wie etwa Hitzebeständigkeit und Abriebfestigkeit aufweisen und/oder aus einem anderen Material gebildet sein und/oder ein anderes Material aufweisen. Damit ist eine flexible Anpassung an die jeweiligen Gegebenheiten der Verbrennungsanlage und an das Brenngut möglich und besonders stark oder schwach beanspruchte Elemente können jeweils optimal ausgestaltet werden.The individual elements can each have different mechanical properties such as heat resistance and abrasion resistance and / or be formed from a different material and / or have a different material. This enables flexible adaptation to the particular conditions of the incineration system and to the items to be fired, and elements that are particularly heavily or lightly stressed can each be optimally designed.

Bei einem Vorschubrost einer Verbrennungsanlage, der mehrere stufenartig angeordnete Roststäbe aufweist, ergeben sich die eingangs genannten Vorteile hinsichtlich Verschleißfestigkeit, Kostenverringerung und Flexibilität.In the case of a moving grate of an incineration plant, which has several grate bars arranged in steps, the advantages mentioned at the beginning with regard to wear resistance, cost reduction and flexibility result.

Die Erfindung schafft zudem ein Auflageelement und ein Fußelement für einen Roststab, die jeweils für sich verkehrsfähig sind. Die Bauteile können Gussteile und/oder aus Stahl-/Blechlegierungen gebildet sein.The invention also creates a support element and a foot element for a grate bar, each of which is marketable by itself. The components can be cast parts and / or made of steel / sheet metal alloys.

Es sind bei Defekten nur noch die jeweils verschlissenen Elemente, insbesondere die Brennbahnelemente, auszutauschen und nicht mehre der gesamte Roststab. Ein hohes Maß an Flexibilität bei der Gestaltung einschließlich der Möglichkeit, die Luftführung durch tauschbare Lostelle optimal abzustimmen, dies ggf. auch nach Erstmontage, wird ermöglicht. Die Geometrie kann durch Austausch einzelner Elemente verändert werden. Die Luftdüsen bleiben durch die Relativbewegungen stets frei. Verschiedene Zusammenbauvarlanten mit identischen Grundelementen verringern die Lagerhaltungskosten. Durch die Einzelelemente ist auch eine ökonomischere Fertigung möglich.In the event of defects, only the worn elements, in particular the fuel path elements, need to be replaced and not the entire grate bar. A high degree of flexibility in the design including the possibility of optimally coordinating the air flow through exchangeable loose points, possibly even after initial assembly, is made possible. The geometry can be changed by exchanging individual elements. The air nozzles always remain free due to the relative movements. Different assembly variants with identical basic elements reduce storage costs. The individual elements also enable more economical production.

Weitere Ausgestaltungen und Eigenschaften der Erfindung ergeben sich aus der nachfolgenden Beschreibung, den Figuren und den Ansprüchen.Further refinements and properties of the invention emerge from the following description, the figures and the claims.

FIGURENBESCHREIBUNGFIGURE DESCRIPTION

  • Fig. 1A, 1B und 1C zeigen einen Roststab aus verschiedenen Perspektiven, wobei in Fig. 1C einzelne Elemente durchscheinend dargestellt sind. Figure 1A , 1B and 1C show a grate bar from different perspectives, in Figure 1C individual elements are shown translucent.
  • Fig. 2A, 2B, 2C, 2D und 2E zeigt ein Auflageelement in Seitenansicht, Stirnansicht, Draufsicht, schräg von oben bzw. schräg von unten. Figures 2A, 2B, 2C, 2D and 2E shows a support element in side view, front view, top view, obliquely from above or obliquely from below.
  • Fig. 3A, 3B, 3C, 3D und 3E zeigt ein Auflageelement in Seitenansicht, Stirnansicht, Draufsicht, schräg von oben bzw. schräg von unten. Figures 3A, 3B, 3C, 3D and 3E shows a support element in side view, front view, top view, obliquely from above or obliquely from below.
  • Fig. 4A, 4B, 4C, 4D und 4E zeigt ein Brennbahnelement in Seltenansicht, Stirnansicht, Draufsicht, schräg von oben bzw. schräg von unten. Figures 4A, 4B, 4C, 4D and 4E shows a focal path element in a rare view, front view, top view, obliquely from above or obliquely from below.
  • Fig. 5A, 5B, 5C, 5D und 5E zeigt ein weiteres Brennbahnelement in Seitenansicht, Stirnansicht, Draufsicht, schräg von oben bzw. schräg von unten. Figures 5A, 5B, 5C, 5D and 5E shows another focal path element in side view, front view, top view, obliquely from above or obliquely from below.
DETAILLIERTE BESCHREIBUNG EINZELNER AUSFÜHRUNGSFORMENDETAILED DESCRIPTION OF INDIVIDUAL EMBODIMENTS

Der in Fig. 1 dargestellte Roststab 1 für einen Vorschubrost einer Verbrennungsanlage ist aus einem Auflageelement 2, beispielhaft vier Brennbahnelementen 3 und einem Fußelement 4 zusammengesetzt, die In den Fig. 2 bis 4 im einzelnen dargestellt sind.The in Fig. 1 shown grate bar 1 for a moving grate of an incinerator is composed of a support element 2, for example four fuel path elements 3 and a foot element 4, which In the Figs. 2 to 4 are shown in detail.

Das Auflageelement 2 weist eine Oberfläche auf, die mit einem flächigen Verstärkungselement versehen sein kann. Nach unten ist einen Auflagepartie 5 vorgesehen zur Verbindung und/oder zum Aufsetzten auf eine Besfestigung und/oder einen Antriebsmechanismus zum Hin- und Herbewegen vorzugsweise in der Flächenebene. Eine Schwalbenschwanzverbindung 6 oder dergleichen an hier zwei seitlichen Rippen 7 des Auflageelements 2 sowie an zwei ebenfalls seitlichen Rippen 8 des Fußelements 4 verbindet beide miteinander. Gesichert wird das Fußelement 4 am Auflageelement 2 durch eine Verschraubung 9 oder dergleichen.The support element 2 has a surface which can be provided with a flat reinforcing element. At the bottom, a support section 5 is provided for connection and / or for placing on a fastening and / or a drive mechanism for moving back and forth, preferably in the plane of the surface. A dovetail connection 6 or the like on here two lateral ribs 7 of the support element 2 and on two likewise lateral ribs 8 of the foot element 4 connects the two to one another. The foot element 4 is secured on the support element 2 by a screw connection 9 or the like.

Die in Fig. 1C durchscheinend dargestellten beiden mittleren Brennbahnelemente 3 lassen erkennen, dass das Fußelement 4 über Rippen 8, 10 die Brennbahnelemente 3 stützen kann. Die Rippen 10 weisen zudem Ausnehmungen 11 wie etwa fluchtende Bohrungen auf, in die eine Stange 12 einsgeschoben werden kann, um die Brennbahnelemente 3, die ebenfalls über hier paarweise Rippen 13 mit Ausnehmungen 11 verfügen, zu befestigen. Die Stange 12 kann endseitig mit Abschlusselementen 14 wie etwa angeschweißten Unterlegscheiben befestigt sein, wobei vorzugsweise ein Spiel verbleibt, damit die Brennbahnelemente 3 seitlich um mindestens 2, 5, 7, 10, 15, 20 mm insbesondere durch die Heißluftbewegungen infolge Verbrennung beweglich bleiben.In the Figure 1C The two middle focal path elements 3 shown translucently show that the foot element 4 can support the focal path elements 3 via ribs 8, 10. The ribs 10 also have recesses 11 such as aligned bores into which a rod 12 can be pushed in order to fasten the focal path elements 3, which also have ribs 13 with recesses 11 here in pairs. The end of the rod 12 can be fastened with closing elements 14 such as welded-on washers, with play preferably remaining so that the focal path elements 3 remain movable laterally by at least 2, 5, 7, 10, 15, 20 mm, in particular due to the hot air movements caused by combustion.

In der Fläche der Brennbahnelemente 3 und insbesondere wie dargestellt an den aneinander angrenzenden Seiten 15 der Brennbahnelemente 3 können Luftdüsen 16 vorgesehen sein, die hier beispielhaft schräg und ggf. verjüngt verlaufen. Die Seiten 15 können aber auch luftdüsenfrei sein, vgl. Fig. 5, um den Rostdurchfall in der Austragszone zu verhindern.Air nozzles 16 can be provided in the surface of the fuel path elements 3 and in particular, as shown, on the mutually adjoining sides 15 of the fuel path elements 3, which here run obliquely and possibly tapered, for example. However, the sides 15 can also be free of air nozzles, cf. Fig. 5 to prevent the grate from falling out in the discharge zone.

Der modulare Aufbau erlaubt auch eine unterschiedliche flexible Anpassung der verschiedenen Stufen eines Stufenrosts auf Basis der Standardbauteile. Beispielsweise kann eine Stufe mit und eine andere ohne Luftdüsen ausgestaltet sein.The modular structure also allows a different flexible adaptation of the different levels of a step grating on the basis of the standard components. For example, one stage can be designed with and another without air nozzles.

Claims (8)

  1. Grate bar (1) for a moving grate of a combustion assembly, having a focal track section for items to be burned, a front-side foot section, and a rear overlay section, wherein the grate bar (1) is modularly composed from individual, interchangeable elements (2, 3, 4) which are positively and/or non-positively connected to one another, wherein an overlay element (2) forming the overlay section and a focal track element (3) at least partially forming the focal track section are provided, characterized in that the focal track element (3) is supported on one foot element (4) forming the foot section, and the overlay element (2) has a rib (7) with one part of a dovetail joint (6) and the foot element (4) has a rib (8, 10) with a different part of the dovetail joint (6), in such a way that the overlay element (2) is/are detachably fixed together with the foot element (4) via the dovetail joint (6).
  2. Grate bar according to claim 1, characterized in that the focal track element (3) has ribs (13) on the underside with recesses for a rod-shaped connection element (12) and/or lateral recesses (16); and/or that multiple focal track elements (3) are provided to be movable relative to one another in a fixed state.
  3. Grate bar according to claim 1 or 2, characterized in that one of the elements (2, 3, 4) has a different mechanical property and/or is formed from a different material and/or has a different material from one of the other elements (2, 3, 4)
  4. Overlay element (2) for a grate bar (1) according to one of claims 1 to 3, characterized by a connection section for connecting to a foot element (4), wherein the connection section has a rib (7) with a part of a dovetail joint.
  5. Foot element (4) for a grate bar (1) according to one of claims 1 to 3, characterized by a connection section (9) for connecting to a overlay element (2) according to claim 4, wherein the connection section (9) has a part of a dovetail joint, and foot and a connection rib (8, 10), extending between the connection section (9) and the foot, for a focal track element (3) according to claim 5.
  6. Moving grate of a combustion assembly having multiple grate bars (1) according to one of claims 1 to 3 arranged step-wise.
  7. Moving grate according to claim 7, characterized in that two modularly designed steps are configured differently.
  8. Grate bar modular system having a plurality of overlay elements, focal track elements, and foot elements of the grate bars according to one of claims 1 to 3.
EP12002650.5A 2011-04-15 2012-04-16 Modular grate bar, overlay element and foot element for same and moving grate of a combustion assembly Active EP2511609B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202011005341.5U DE202011005341U1 (en) 2011-04-15 2011-04-15 Modular grate bar, support element, focal element and foot element for it as well as feed grate of a combustion plant
DE102011100369A DE102011100369A1 (en) 2011-04-15 2011-05-03 Modular grate bar, support element, focal element and foot element for it as well as feed grate of a combustion plant

Publications (3)

Publication Number Publication Date
EP2511609A2 EP2511609A2 (en) 2012-10-17
EP2511609A3 EP2511609A3 (en) 2015-02-11
EP2511609B1 true EP2511609B1 (en) 2020-12-30

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EP12002650.5A Active EP2511609B1 (en) 2011-04-15 2012-04-16 Modular grate bar, overlay element and foot element for same and moving grate of a combustion assembly

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EP (1) EP2511609B1 (en)
DE (1) DE102011100369A1 (en)

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Publication number Priority date Publication date Assignee Title
DE202013009741U1 (en) 2013-12-02 2015-03-03 Wvt Breiding Gmbh Grate element with cast-in ceramic insert and feed grate
DE102014004660A1 (en) 2014-02-10 2015-08-13 Joachim Kümmel Method for incinerating waste and biomass on an air-cooled grate, and device for carrying out the method
DE102014008858A1 (en) 2014-06-16 2015-12-17 Joachim Kümmel Method for incinerating waste and biomass on a fin-wall step grate and apparatus for carrying out the method
CN106287743B (en) * 2015-05-27 2018-11-30 南京凯盛国际工程有限公司 Combined fire-grating chip architecture
MY189420A (en) * 2015-06-12 2022-02-10 Hitachi Zosen Inova Ag Grate block for a combustion grate
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

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DE7521218U (en) * 1975-10-30 Claudius Peters Ag Grate plate with wear parts
CH663266A5 (en) * 1984-07-05 1987-11-30 Kuepat Ag ROD ROD FOR COMBUSTION OVENS.
DE9417829U1 (en) * 1994-11-07 1996-03-14 Babcock Materials Handling Division GmbH, 21614 Buxtehude Grate plate for the sliding grate of a radiator
DE19504588B4 (en) * 1995-02-11 2006-07-13 Khd Humboldt Wedag Gmbh Grate plate for grate cooler for cooling hot material
DE10221981A1 (en) * 2002-05-17 2003-11-27 Kloeckner Humboldt Wedag Grid plate for a cooler for cooling hot material, e.g. hot cement clinker, has a closing part formed as a cover of a part of the upper side of the plate base body and/or as a cover of the front pushing side
EP1975507A1 (en) 2007-03-29 2008-10-01 ThyssenKrupp Xervon Energy GmbH Grate for combustion plants
DE102009016523A1 (en) * 2009-04-08 2010-11-25 Baumgarte Boiler Systems Gmbh Grate bar for an incinerator and method of making a grate bar
DE102009042722A1 (en) 2009-09-23 2011-03-24 Thyssenkrupp Xervon Energy Gmbh grate bar

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Also Published As

Publication number Publication date
DE102011100369A1 (en) 2012-10-18
EP2511609A2 (en) 2012-10-17
EP2511609A3 (en) 2015-02-11

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