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EP1983261A1 - Movement compensator - Google Patents

Movement compensator Download PDF

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Publication number
EP1983261A1
EP1983261A1 EP07024263A EP07024263A EP1983261A1 EP 1983261 A1 EP1983261 A1 EP 1983261A1 EP 07024263 A EP07024263 A EP 07024263A EP 07024263 A EP07024263 A EP 07024263A EP 1983261 A1 EP1983261 A1 EP 1983261A1
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EP
European Patent Office
Prior art keywords
grate
rectilinear
pipe
distribution cylinder
collecting distribution
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Granted
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EP07024263A
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German (de)
French (fr)
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EP1983261B1 (en
Inventor
Ernst Schenkel
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Individual
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Individual
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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
    • 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

Definitions

  • the present invention relates to a device according to the preamble of the independent claim.
  • feed grates are known to consist of a plurality of successively arranged rows of grate bars, which usually overlap each other like a tile and on which the material to be burned both moves forward and is simultaneously stoked.
  • This known dual function is achieved, inter alia, that every second row of grate bars movably mounted and periodically advanced and retracted on the front, stationary grate bar row lying in front of it.
  • the grate bars are constantly cooled in order to limit the resulting wear, d. H. from a continuous fluid, e.g. Cooling water flow flows through.
  • the European patent application EP 1 744 101 A2 describes a device for supplying coolant, which takes into account the reciprocating movement of the grate bars.
  • a variable in length cooling fluid cylinder in thedefluidzutube ein.
  • This cooling fluid cylinder consists of two telescopically guided tubes whose outer stationary, the inner but movably mounted in the outer and mechanically coupled with the movement of the grate bar.
  • this known device allows the supply of the coolant despite the constant reciprocating movement of the grate bars, but on the other hand has the disadvantage that in one direction of movement (extension) forces are exerted in the positive direction, in the other direction of movement (retraction) must be overcome in a negative sense, with the frictional forces still play a role. This has a negative effect on energy requirements at high system operating pressures. It should also be noted that the longer the path to be compensated, the greater the risk of buckling at the joint of piston and cylinder. Another disadvantage is the fact that according to this known solution when extending the hydraulic cross section increases and decreases when moving together, which can lead to vibrations in the attachment system, which can have a negative effect.
  • EP 0915294A1 is proposed for hydraulic compensation of the rust movement to protect the supply of cooling medium hoses from the influence of temperature and dirt by placing them outside of the underwinding area in a box and leads out through a slot arranged in the box to the outside.
  • the hoses located inside the box are connected to pipes and compensate for the movement of the pipes rigidly connected to the grate.
  • the continuous supply of cooling fluid to the movable rows of grate bars under extreme heat action is permanently secured.
  • a device is described with reference to the drawing, by means of which the cooling liquid is supplied to the movable grate elements.
  • a virtually identical device is arranged on the opposite side of the grate. If in the present description, therefore, the supply of the cooling liquid is mentioned, this also applies to the construction side for the discharge side.
  • Fig. 1 shows a reciprocating moving drive device 1, which has a piston movably mounted in a cylinder and engages via a connecting member 2 on a support 3 of the grate carriage 11, not shown in its entirety.
  • the movable rows of grate bars 4 b are placed over grate bar 12.
  • the fixed rows of grate bars rest on the grate frame.
  • the control of the drive device 1 is chosen so that by the latter of the grate - and this the entire movable grate bar series - is arranged on the front, stationary grate bar row periodically moved back and forth.
  • a cooling water pipe 5 is connected, the rectilinear portion 5a anchored stationary and, for example, can be sealed at one end 6.
  • the tubing may be provided with a gimbal attachment in view of achieving some adaptability, whereby the device is insensitive to expansions and unparallelism in the relative movement.
  • a collecting distribution cylinder 7 (see also FIG Fig. 2 ) arranged at both ends via interchangeable packings 13a, 13b and via retrofittable emergency seals on the rectilinear pipe section 5a rests.
  • the latter has at a certain point, which will have to be defined, two opposing openings 8, through which the cooling water can flow into the space designated 9 between the inner wall of the collective distribution cylinder 7 and the pipe 5. From this intermediate space, which is accordingly called function according to its function as collective distribution chamber 9, the cooling water then passes via one or more pipes 10 in the grate elements.
  • the cooling fluid for example, the cooling water, depending on their location relative to the grate bar series or laxative line is referred to in the present specification and in the claims for simplicity, regardless of their respective function, referred to as "pipe 5".
  • the pipe 10 is fixedly arranged on the movable grate element 4b, so that it participates in the reciprocating movement of the latter. In this case, this movement of the pipe 10 is transferred to the collective distribution cylinder 7, which thus slides - in time with the advancing movement of the grate on the circumference of the pipe section 5a back and forth.
  • a plurality of pipes 10 may be provided.
  • the position of the openings 8 on the pipe 5 is chosen so that these openings are always within the latter, regardless of the movement of the collecting-Verteilzylinders 7, so that the cooling water continuously into the collective distribution chamber 9 and from there via the pipe 10 in the Grate elements enters or exits.
  • the length L ( Fig.2 ) of the collecting-distribution cylinder 7 is to be sized and the position of the outflow openings 8 agree that the latter in the end positions of the reciprocating movement of the grate element are still within the overflow chamber 9 with certainty.
  • Fig. 4 shows the collecting distribution cylinder 7 in its other end position on the pipe section 5a.
  • the straight pipe section 5a in order to allow the reciprocating movement of the collecting distribution cylinder 7, must be at least twice the length, that is, at least twice the length. 2 L, of the latter exhibit.
  • the grate carriage 11 and thus the movable row of grate bars is supported by a roller 14 on a running rail 15 and is subject only to a rolling friction that can be easily overcome.
  • the movable grate elements 4b, the rigidly connected to the same pipes 10 and the collecting distribution cylinder 7, which the in Fig. 3 form a movable unit, are easily moved back and forth by sliding friction, which is limited exclusively to the aforementioned components.
  • the supply of the cooling liquid is not carried out by a variable in length cooling fluid cylinder from telescopically guided tubes, but the location of the cooling fluid supply a moving grate row is now variably arranged on an existing supply line.
  • the described device which performs the function of a linear motion compensator, is therefore always in relation to the movable grid row at the same position, wherein the supply line 5, or the rectilinear portion 5a thereof, at the same time carrier of the linear motion compensation causing collecting distribution cylinder 7 is.

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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)

Abstract

The device has an accumulated- shared cylinder (7) pivoted at a straight section (5a) of a cooling water pipeline (5). An inner wall of the container and an outer wall of the opening define an accumulated- shared chamber. An exhaust opening is provided at the section such that cooling water reaches the chamber provided between the cylinder and the section, where the chamber is provided in a pipeline (10) guided to a grate. The chamber is connected to a cool fluid system and to a cool pipe system of grate elements (4b) through the opening and the pipeline (10), respectively.

Description

Die vorliegende Erfindung betrifft eine Vorrichtung gemäss dem Oberbegriff des unabhängigen Patentanspruchs.The present invention relates to a device according to the preamble of the independent claim.

Derartige, in grosse Feuerungsanlagen eingebaute Vorschubroste bestehen bekanntlich aus einer Vielzahl von hintereinander angeordneten Roststabreihen, die meist einander dachziegelartig übergreifen und auf denen das zu verbrennende Material sowohl vorwärts bewegt als auch gleichzeitig geschürt wird. Diese bekannte Doppelfunktion wird unter anderem dadurch erzielt, dass jeweils jede zweite Roststabreihe beweglich gelagert und auf der davor liegenden, ortsfesten Roststabreihe periodisch vorgeschoben und wieder zurückgezogen wird. In Anbetracht der hohen, im Verbrennungsprozess auftretenden Temperaturen werden die Roststäbe zwecks Begrenzung des dadurch bedingten Verschleisses ständig gekühlt, d. h. von einem kontinuierlichen Fluid-, z.B. Kühlwasserstrom durchflossen.Such, installed in large furnaces feed grates are known to consist of a plurality of successively arranged rows of grate bars, which usually overlap each other like a tile and on which the material to be burned both moves forward and is simultaneously stoked. This known dual function is achieved, inter alia, that every second row of grate bars movably mounted and periodically advanced and retracted on the front, stationary grate bar row lying in front of it. In view of the high temperatures occurring in the combustion process, the grate bars are constantly cooled in order to limit the resulting wear, d. H. from a continuous fluid, e.g. Cooling water flow flows through.

Da diese Rostelemente zum Grossteil in Grossverbrennungsanlagen mit ständig wechselnder Zusammensetzung des Verbrennungsgutes, z.B. in Müllverbrennungsanlagen, eingesetzt werden, sind die Anforderungen an deren Betriebsverhalten sehr hoch. Bedenkt man beispielsweise, dass diese Verbrennungsanlagen laufend mit Gütern beschickt werden, die sich durch ihr spezifisches Gewicht, ihren Brennwert, ihre Luftdurchlässigkeit, den Feuchtigkeitsgehalt etc. unterscheiden, so lässt sich leicht einsehen, dass derartige Roste oft sehr hohen Temperaturen ausgesetzt sind und einen ungewöhnlichen technischen Aufwand erfordern, wenn sie die erwünschten Standzeiten bei optimalem Verbrennungsprozess erreichen sollen. Durch die beim Verbrennungsvorgang freiwerdende Hitze sind die Rostelemente ständig sowohl der Korrosion als auch dem mechanischen Verschleiss ausgesetzt und müssen zwecks Erzielung einer akzeptablen Lebensdauer ständig gekühlt werden, wobei die Kühlung nach Möglichkeit eine optimale Wärmeverteilung auf der Rostoberfläche gewährleisten sollte, so dass lokale Überhitzungen vermieden werden.Since these grate elements are mostly used in large combustion plants with constantly changing composition of the combustion material, eg in waste incineration plants, the demands on their performance are very high. Considering, for example, that these incinerators are constantly charged with goods that differ by their specific gravity, their calorific value, their air permeability, the moisture content, etc., it is easy to see that such grates are often exposed to very high temperatures and an unusual technical Require effort if they are to achieve the desired service life with optimal combustion process. Due to the heat released during the combustion process, the grate elements are constantly exposed to both corrosion and mechanical wear and must be constantly cooled in order to achieve an acceptable life, the cooling should, if possible, ensure optimum heat distribution on the grate surface, so that local overheating is avoided ,

Das mit der Kühlmittelversorgung der beweglichen Roststäbe verbundene Problem konnte bisher noch nicht auf befriedigende Weise gelöst werden. Zwar ist es bereits versucht worden, das Kühlwasser durch flexible Schläuche an die Roststäbe heranzuführen, so dass die Kühlwasserführung der Roststab- bewegung folgen konnte. Es zeigte sich aber, dass derartige flexible Schläuche, selbst wenn sie eine metallische oder sonstige wärmeabweisende Bewehrung tragen, dem auftretenden Verschleiss nur kurze Zeit standhalten können, so dass kostspielige Betriebsunterbrechungen unvermeidbar sind.The problem associated with the coolant supply of the movable grate bars has not yet been satisfactorily solved. Although it has already been attempted to bring the cooling water through flexible hoses to the grate bars, so that the cooling water flow could follow the grate bar movement. However, it has been found that such flexible hoses, even if they carry a metallic or other heat-resistant reinforcement, can only withstand the occurring wear for a short time, so that costly business interruptions are unavoidable.

Die europäische Patentanmeldung EP 1 744 101 A2 beschreibt eine der Kühlmittelzufuhr dienende Vorrichtung, welche der hin- und hergehenden Vorschubbewegung der Roststäbe Rechnung trägt. Zu diesem Zweck wird vorgeschlagen, in der Kühlfluidzuführleitung einen in der Länge variierbaren Kühlfluidzylinder einzubauen. Dieser Kühlfluidzylinder besteht aus zwei teleskopartig ineinander geführten Rohren, deren äusseres ortsfest, das innere aber im äusseren beweglich gelagert und mit der Bewegung des Roststabes mechanisch gekoppelt ist.The European patent application EP 1 744 101 A2 describes a device for supplying coolant, which takes into account the reciprocating movement of the grate bars. For this purpose, it is proposed to install a variable in length cooling fluid cylinder in the Kühlfluidzuführleitung. This cooling fluid cylinder consists of two telescopically guided tubes whose outer stationary, the inner but movably mounted in the outer and mechanically coupled with the movement of the grate bar.

Diese bekannte Vorrichtung gestattet zwar die Zufuhr des Kühlmittels trotz der ständig hin- und hergehenden Bewegung der Roststäbe, weist aber andererseits den Nachteil auf, dass in der einen Bewegungsrichtung (Ausfahren) Kräfte in positiver Richtung ausgeübt werden, die in der anderen Bewegungsrichtung (Zurückfahren) in negativem Sinne überwunden werden müssen, wobei auch die Reibungskräfte noch eine Rolle spielen. Dies wirkt sich bei hohen Anlagenbetriebsdrücken im Energiebedarf negativ aus. Auch ist zu beachten, dass, je länger der auszugleichende Weg ist, desto grösser die Gefahr des Ausknickens an der Verbindungsstelle von Kolben und Zylinder ist. Ein weiterer Nachteil ist darin zu sehen, dass gemäss dieser bekannten Lösung beim Ausfahren der hydraulische Querschnitt zunimmt und beim Zusammenfahren abnimmt, was im Anhangsystem zu Schwingungen führen kann, die sich negativ auswirken können.Although this known device allows the supply of the coolant despite the constant reciprocating movement of the grate bars, but on the other hand has the disadvantage that in one direction of movement (extension) forces are exerted in the positive direction, in the other direction of movement (retraction) must be overcome in a negative sense, with the frictional forces still play a role. This has a negative effect on energy requirements at high system operating pressures. It should also be noted that the longer the path to be compensated, the greater the risk of buckling at the joint of piston and cylinder. Another disadvantage is the fact that according to this known solution when extending the hydraulic cross section increases and decreases when moving together, which can lead to vibrations in the attachment system, which can have a negative effect.

Gemäss der europäischen Patentschrift EP 0989364B1 wird vorgeschlagen, nur die feststehenden Rostblöcke zum Kühlen mittels eines Kühlmittels auszugestalten. Die beweglichen Rostblöcke sollen dadurch an der Kühlung teilnehmen, dass die gekühlten, unbeweglichen Rostblöcke mit einem Fuss auf den beweglichen aufliegen und dabei einen Teil ihrer Kühlwirkung auf dieselben übertragen. Dieser Vorschlag umgeht zwar das Problem der Kühlung beweglicher Rostblöcke, nimmt dafür aber in Kauf, dass die Hälfte aller Rostblöcke, nämlich die beweglichen, praktisch nicht gekühlt wird, da die Kühlung über den auf den beweglichen Rostblöcken schleifenden Fuss wohl kaum die Wirkung eines kühlwasserdurchströmten Rostblocks ersetzen kann, zumal die Auflagefläche des schleifenden Fusses eine Länge zwischen 4 und 8 cm und der Hälfte der Gesamtlänge des feststehenden Rostblocks aufweisen soll. Die mit dieser Lösung verbundene ungleiche thermische Belastung der Rostblöcke führt überdies zu Wartungsproblemen und stark abweichendem Verschleisserhalten der beweglichen bzw. unbeweglichen Rostblöcke.According to the European patent specification EP 0989364B1 It is proposed to design only the fixed grate blocks for cooling by means of a coolant. The moving grate blocks are to participate in the cooling by the fact that the cooled, immovable grate blocks rest with one foot on the movable and thereby transfer part of their cooling effect on the same. Although this proposal circumvents the problem of cooling moving grate blocks, it takes into account that half of all grate blocks, namely the moving, practically is not cooled, since the cooling on the grinded on the moving grate foot hardly the effect of a cooling water flowed through rust block Especially since the bearing surface of the sanding foot should have a length between 4 and 8 cm and half the total length of the fixed grate block. The with this solution Associated uneven thermal load of the grate blocks also leads to maintenance problems and greatly differing Verschleisserhalten the movable or immovable grate blocks.

In der europäischen Patentanmeldung EP 0915294A1 wird zur hydraulischen Kompensation der Rostbewegung vorgeschlagen, die zur Zufuhr des Kühlmediums dienenden Schläuche vor dem Einfluss von Temperatur und Schmutz dadurch zu schützen, dass man sie ausserhalb des Unterwindbereiches in einem Kasten unterbringt und über einen im Kasten angeordneten Schlitz nach aussen führt. Die innerhalb des Kastens angeordneten Schläuche sind an Rohre angeschlossen und kompensieren die Bewegung der starr mit dem Rost verbundenen Rohre.In the European patent application EP 0915294A1 is proposed for hydraulic compensation of the rust movement to protect the supply of cooling medium hoses from the influence of temperature and dirt by placing them outside of the underwinding area in a box and leads out through a slot arranged in the box to the outside. The hoses located inside the box are connected to pipes and compensate for the movement of the pipes rigidly connected to the grate.

Diese konstruktiv aufwendige Lösung kann den vorzeitigen Verschleiss der flexiblen Leitungen nicht verhindern, da sich der Kasten in Anbetracht der hohen und schwankenden Temperaturen nur schwer abdichten lässt und ferner selbst den hohen Temperaturen - und als deren Folge hohem Verschleiss - ausgesetzt ist.This structurally complex solution can not prevent the premature wear of the flexible lines, since the box is difficult to seal in view of the high and fluctuating temperatures and further even the high temperatures - and as a result, high wear - is exposed.

Es ist somit die Aufgabe der vorliegenden Erfindung, eine die periodische Vorschubbewegung der bewegten Rostelemente kompensierende Vorrichtung zu schaffen, welche die Nachteile der vorbeschriebenen Lösungsversuche behebt und damit eine Lösung präsentiert, die den Einsatz flexibler Leitungen umgeht und die ferner in einem abseits der Hochtemperaturzone des Rostes liegenden Bereich untergebracht werden kann.It is thus the object of the present invention to provide a device which compensates for the periodic advancing movement of the moving grate elements, which overcomes the disadvantages of the above-described attempted solutions and thus presents a solution which avoids the use of flexible lines and which further in a remote from the high temperature zone of the grate lying area can be accommodated.

Diese Erfindung ist im kennzeichnenden Teil des unabhängigen Patentanspruchs definiert. Bevorzugte Ausführungsbeispiele ergeben sich aus den abhängigen Ansprüchen.This invention is defined in the characterizing part of the independent claim. Preferred embodiments will be apparent from the dependent claims.

Dank der erfindungsgemässen Vorrichtung ist die kontinuierliche Kühlfluidversorgung der beweglichen, unter extremer Hitzeeinwirkung stehenden Roststabreihen dauerhaft gesichert.Thanks to the device according to the invention, the continuous supply of cooling fluid to the movable rows of grate bars under extreme heat action is permanently secured.

Im vorliegenden Zusammenhang wird unter Bezugnahme auf die Zeichnung eine Vorrichtung beschrieben, mittels welcher die Kühlflüssigkeit den beweglichen Rostelementen zugeführt wird. Zur Ableitung der Kühlflüssigkeit aus den Rostelementen ist an der gegenüberliegenden Seite des Rostes eine praktisch identische Vorrichtung angeordnet. Wenn in der vorliegenden Beschreibung somit von der Zufuhr der Kühlflüssigkeit die Rede ist, so gilt dies in konstruktiver Hinsicht auch für die Abfuhrseite.In the present context, a device is described with reference to the drawing, by means of which the cooling liquid is supplied to the movable grate elements. For discharging the cooling liquid from the grate elements, a virtually identical device is arranged on the opposite side of the grate. If in the present description, therefore, the supply of the cooling liquid is mentioned, this also applies to the construction side for the discharge side.

Nachstehend wird anhand der beiliegenden Zeichnung ein Ausführungsbeispiel der vorliegenden Erfindung für die Seite der Kühlmittelzufuhr beschrieben. Es zeigen:

  • Fig. 1 eine vereinfachte Perspektivdarstellung einer Ausführungsform der erfindungsgemässen Vorrichtung in ihrer Einbaulage,
  • Fig. 2 ein Detail derselben Vorrichtung im Schnitt,
  • Fig. 3 eine weitere, vereinfachte Perspektivdarstellung, welche die starre Verbindung der erfindungsgemässen Vorrichtung mit der beweglichen Roststabreihe zeigt und
  • Fig. 4 die gesamte in Fig. 1 gezeigte Anlage in einer weiteren Betriebsstellung der erfindungsgemässen Vorrichtung.
An embodiment of the present invention for the coolant supply side will now be described with reference to the accompanying drawings. Show it:
  • Fig. 1 a simplified perspective view of an embodiment of the inventive device in its installed position,
  • Fig. 2 a detail of the same device in section,
  • Fig. 3 a further simplified perspective view showing the rigid connection of the inventive device with the movable grate bar row and
  • Fig. 4 the entire in Fig. 1 shown system in a further operating position of the inventive device.

Fig. 1 zeigt eine hin- und hergehend bewegte Antriebsvorrichtung 1, die einen in einem Zylinder beweglich gelagerten Kolben aufweist und über ein Anschlussorgan 2 an einem Träger 3 des in seiner Gesamtheit nicht dargestellten Rostwagens 11 angreift. Auf dem Rostwagen 11 sind über Roststabträger 12 die beweglichen Roststabreihen 4b aufgelegt. Die festen Roststab- reihen ruhen hingegen auf dem Rostgerüst. Die Steuerung der Antriebsvorrichtung 1 ist so gewählt, dass durch die letztere der Rostwagen - und mit diesem die gesamte bewegliche Roststabreihe - auf der davor angeordneten, ortsfesten Roststabreihe periodisch hin und her bewegt wird. Fig. 1 shows a reciprocating moving drive device 1, which has a piston movably mounted in a cylinder and engages via a connecting member 2 on a support 3 of the grate carriage 11, not shown in its entirety. On the grate carriage 11, the movable rows of grate bars 4 b are placed over grate bar 12. By contrast, the fixed rows of grate bars rest on the grate frame. The control of the drive device 1 is chosen so that by the latter of the grate - and this the entire movable grate bar series - is arranged on the front, stationary grate bar row periodically moved back and forth.

Zur kontinuierlichen Kühlung der mit Kühlrohren versehenen bewegten Rostelemente 4b ist eine Vorrichtung vorgesehen, die nachstehend unter Bezugnahme auf die beiliegende Zeichnung beschrieben wird.For continuously cooling the moving grate elements 4b provided with cooling tubes, a device is provided which will be described below with reference to the attached drawing.

An ein nicht dargestelltes Kühlwasser-Versorgungssystem ist eine Kühlwasser-Rohrleitung 5 angeschlossen, deren geradliniger Abschnitt 5a ortsfest verankert und beispielsweise an einem Ende 6 dicht verschlossen sein kann. Am Zufuhrabschnitt kann die Rohrleitung im Hinblick auf die Erzielung einer gewissen Anpassbarkeit mit einer kardanischen Befestigung versehen sein, wodurch die Vorrichtung hinsichtlich Ausdehnungen und Unparallelität in der Relativbewegung unempfindlich ist. Am Umfang des geradlinigen Abschnitts 5a der Rohrleitung 5 ist ein Sammel-Verteilzylinder 7 (s. auch Fig. 2) angeordnet, der an beiden Enden über auswechselbare Dichtungspackungen 13a, 13b und über nachrüst- bare Notdichtungen auf dem geradlinigen Rohrleitungsabschnitt 5a aufliegt. Der letztere weist an einer bestimmten Stelle, die noch zu definieren sein wird, zwei einander gegenüberliegende Öffnungen 8 auf, durch welche das Kühlwasser in den mit 9 bezeichneten Zwischenraum zwischen der Innenwand des Sammel- Verteilzylinders 7 und der Rohrleitung 5 einströmen kann. Von diesem Zwischenraum, der seiner Funktion entsprechend hinfort als Sammel-Verteilkammer 9 bezeichnet wird, gelangt das Kühlwasser dann über eine oder mehrere Rohrleitungen 10 in die Rostelemente.To a not shown cooling water supply system, a cooling water pipe 5 is connected, the rectilinear portion 5a anchored stationary and, for example, can be sealed at one end 6. At the feed section, the tubing may be provided with a gimbal attachment in view of achieving some adaptability, whereby the device is insensitive to expansions and unparallelism in the relative movement. At the periphery of the rectilinear portion 5a of the pipe 5, a collecting distribution cylinder 7 (see also FIG Fig. 2 ) arranged at both ends via interchangeable packings 13a, 13b and via retrofittable emergency seals on the rectilinear pipe section 5a rests. The latter has at a certain point, which will have to be defined, two opposing openings 8, through which the cooling water can flow into the space designated 9 between the inner wall of the collective distribution cylinder 7 and the pipe 5. From this intermediate space, which is accordingly called function according to its function as collective distribution chamber 9, the cooling water then passes via one or more pipes 10 in the grate elements.

Die das Kühlfluid, beispielsweise das Kühlwasser, je nach ihrer Lage bezüglich der Roststabreihe zu- oder abführende Leitung ist in der vorliegenden Beschreibung und in den Ansprüchen der Einfachheit halber, unabhängig von ihrer jeweiligen Funktion, als "Rohrleitung 5" bezeichnet.The cooling fluid, for example, the cooling water, depending on their location relative to the grate bar series or laxative line is referred to in the present specification and in the claims for simplicity, regardless of their respective function, referred to as "pipe 5".

Wie sich ferner aus Fig. 3 ergibt, ist die Rohrleitung 10 ortsfest am beweglichen Rostelement 4b angeordnet, so dass sie an der hin- und hergehenden Bewegung des letzteren teilnimmt. Dabei wird diese Bewegung der Rohrleitung 10 auf den Sammel-Verteilzylinder 7 übertragen, der somit- im Takt der Vorschubbewegung des Rostes- am Umfang des Rohrleitungsabschnitts 5a hin und her gleitet. In der praktischen Ausführung der Vorrichtung können auch mehrere Rohrleitungen 10 vorgesehen sein.As further out Fig. 3 results, the pipe 10 is fixedly arranged on the movable grate element 4b, so that it participates in the reciprocating movement of the latter. In this case, this movement of the pipe 10 is transferred to the collective distribution cylinder 7, which thus slides - in time with the advancing movement of the grate on the circumference of the pipe section 5a back and forth. In the practical embodiment of the device, a plurality of pipes 10 may be provided.

Die Lage der Öffnungen 8 an der Rohrleitung 5 ist so gewählt, dass diese Öffnungen ungeachtet der Bewegung des Sammel-Verteilzylinders 7 stets innerhalb des letzteren liegen, so dass das Kühlwasser kontinuierlich in die Sammel- Verteilkammer 9 und von dort über die Rohrleitung 10 in die Rostelemente gelangt oder austritt. Die Länge L (Fig.2) des Sammel-Verteilzylinders 7 ist so zu bemessen und auf die Lage der Ausströmöffnungen 8 abzustimmen, dass die letzteren in den Endlagen der hin und hergehenden Bewegung des Rostelementes immer noch mit Sicherheit innerhalb der Überströmkammer 9 liegen.The position of the openings 8 on the pipe 5 is chosen so that these openings are always within the latter, regardless of the movement of the collecting-Verteilzylinders 7, so that the cooling water continuously into the collective distribution chamber 9 and from there via the pipe 10 in the Grate elements enters or exits. The length L ( Fig.2 ) of the collecting-distribution cylinder 7 is to be sized and the position of the outflow openings 8 agree that the latter in the end positions of the reciprocating movement of the grate element are still within the overflow chamber 9 with certainty.

Fig 4 zeigt den Sammel-Verteilzylinder 7 in seiner anderen Endlage auf dem Rohrleitungsabschnitt 5a. Fig. 4 shows the collecting distribution cylinder 7 in its other end position on the pipe section 5a.

Der geradlinige Rohrleitungsabschnitt 5a muss, um die hin- und hergehende Bewegung des Sammel-Verteilzylinders 7 zu ermöglichen, mindestens die doppelte Länge, d.h. 2 L, des letzteren aufweisen.The straight pipe section 5a, in order to allow the reciprocating movement of the collecting distribution cylinder 7, must be at least twice the length, that is, at least twice the length. 2 L, of the latter exhibit.

Der Rostwagen 11 und damit die bewegliche Roststabreihe stützt sich über eine Laufrolle 14 auf eine Laufschiene 15 ab und unterliegt lediglich einer Rollreibung, die leicht überwunden werden kann. Die beweglichen Rostelemente 4b, die starr mit denselben verbundenen Rohrleitungen 10 und der Sammel-Verteilzylinder 7, welche die in Fig. 3 dargestellte bewegliche Einheit bilden, sind durch gleitende Reibung, die sich ausschliesslich auf die vorgenannten Bauteile beschränkt, leicht hin und her beweglich.The grate carriage 11 and thus the movable row of grate bars is supported by a roller 14 on a running rail 15 and is subject only to a rolling friction that can be easily overcome. The movable grate elements 4b, the rigidly connected to the same pipes 10 and the collecting distribution cylinder 7, which the in Fig. 3 form a movable unit, are easily moved back and forth by sliding friction, which is limited exclusively to the aforementioned components.

Im Gegensatz zu den bekannten Vorrichtungen dieser Art, erfolgt somit die Zufuhr der Kühlflüssigkeit nicht durch einen in der Länge variablen Kühlfluidzylinder aus teleskopartig ineinander geführten Rohren, sondern der Ort der Kühlfluidzufuhr einer bewegten Rostreihe ist nun variabel auf einer bestehenden Zufuhrleitung angeordnet. Die beschriebene Vorrichtung, welche die Funktion eines linearen Bewegungsausgleichers ausübt, befindet sich somit in Bezug auf die bewegliche Rostreihe immer an der gleichen Position, wobei die Zufuhrleitung 5, bzw. der geradlinige Abschnitt 5a derselben, gleichzeitig Träger des den linearen Bewegungsausgleich bewirkenden Sammel-Verteilzylinders 7 ist.In contrast to the known devices of this type, therefore, the supply of the cooling liquid is not carried out by a variable in length cooling fluid cylinder from telescopically guided tubes, but the location of the cooling fluid supply a moving grate row is now variably arranged on an existing supply line. The described device, which performs the function of a linear motion compensator, is therefore always in relation to the movable grid row at the same position, wherein the supply line 5, or the rectilinear portion 5a thereof, at the same time carrier of the linear motion compensation causing collecting distribution cylinder 7 is.

Dadurch, dass bei der beschriebenen Vorrichtung während der Bewegung keine Änderung der Einbaulänge erfolgt, sind Ausknickungen praktisch ausgeschlossen.Because no change in the installation length takes place in the described device during the movement, buckling are virtually eliminated.

Claims (8)

Vorrichtung an einem Vorschubrost oder einer Brennstoffaufgabe einer Verbrennungsanlage zur kontinuierlichen Versorgung eines linear beweglich gelagerten und einer ständigen hin- und hergehenden Bewegung unterworfenen, an eine Kühlfluid- Zu- und Abfuhr angeschlossenen Rostelementes (4), dadurch gekennzeichnet, dass die Zufuhr des Kühlfluids zu dem beweglichen Rostelement jeweils über einen ausserhalb desselben ortsfest gelagerten, geradlinigen Rohrleitungs- abschnitt (5a) erfolgt, an dessen Umfang ein mit dem beweglichen Träger (3) des hin- und hergehend bewegten Rostelementes (4b) starr verbundener Sammel-Verteilzylinder (7) angeordnet und an seinen beiden Enden, vorzugsweise mittels Gleitdichtungen (13a, 13b), auf dem genannten geradlinigen Abschnitt (5a) der Rohrleitung (5) verschiebbar gelagert ist, wobei die Innenwand des Sammel-Verteilzylinders (7) mit der Aussenwand des geradlinigen Rohrleitungsabschnitts (5a) eine den letzteren ringförmig umgebende Sammel-Verteilkammer (9) begrenzt, die einerseits über mindestens eine Ausströmöffnung (8) des geradlinigen Rohrleitungsabschnitts (5a) an das Kühlfluidsystem, andererseits über mindestens eine Leitung (10) an das Kühlrohrsystem des beweglichen Rostelementes (4b) angeschlossen ist und die Länge (L) des Sammel-Verteilzylinders (7) so bemessen und auf die Lage der Ausströmöffnung (8) abgestimmt ist, dass die letztere in den Endlagen der hin- und hergehenden Bewegung des beweglichen Rostelementes (4b) immer noch innerhalb der Sammel-Verteilkammer (9) liegt, derart, dass der auf dem ortsfesten und geradlinigen Abschnitt (5a) der Rohrleitung (5) verschiebbar gelagerte Sammel-Verteilzylinder (7) die aus der Rohrleitung (5) ausströmende Kühlflüssigkeit unter Vermeidung flexibler Flüssigkeitsführungen, unabhängig von der jeweiligen Stellung des Rostelementes, in das letztere weiterleitet.Device on a feed grate or a fuel supply of a combustion system for the continuous supply of a linearly movably mounted and a constant reciprocating motion, connected to a cooling fluid supply and discharge grate element (4), characterized in that the supply of the cooling fluid to the movable grate element in each case via an outside of the same stationarily mounted, rectilinear pipe section (5a) takes place at the periphery of a with the movable support (3) of the reciprocating grate element (4b) rigidly connected collecting distribution cylinder (7) and arranged at its two ends, preferably by sliding seals (13a, 13b), on the said rectilinear portion (5a) of the pipeline (5) is displaceably mounted, wherein the inner wall of the collecting distribution cylinder (7) with the outer wall of the rectilinear pipe section (5a) a circular distribution manifold surrounding the latter ( 9), which is connected on the one hand via at least one outflow opening (8) of the rectilinear pipe section (5a) to the cooling fluid system, on the other hand via at least one line (10) to the cooling pipe system of the movable grate element (4b) and the length (L) of the collection -Verteilzylinders (7) so dimensioned and matched to the position of the outflow opening (8), that the latter in the end positions of the reciprocating movement of the movable grate element (4b) is still within the collecting distribution chamber (9), such in that the collecting distribution cylinder (7) displaceably mounted on the stationary and rectilinear section (5a) of the pipeline (5) avoids the cooling liquid flowing out of the pipeline (5) flexible liquid guides, regardless of the respective position of the grate element, in the latter passes on. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Länge (L) des geradlinigen Rohrleitungsabschnitts (5a) mindestens der zweifachen Länge des Sammel-Verteilzylinders (7) entspricht.Apparatus according to claim 1, characterized in that the length (L) of the rectilinear pipe section (5a) corresponds to at least twice the length of the collecting distribution cylinder (7). Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Sammel- Verteilzylinder (7) mit den verbindenden Rohrleitungen (10) und mit ihm das darüber angeordnete bewegliche Rostelement (4b) über eine Stahlrolle (14) auf einer Schiene (12) rollend gelagert ist.Apparatus according to claim 1 or 2, characterized in that the collecting distribution cylinder (7) with the connecting pipes (10) and with it the above arranged movable grate element (4b) via a steel roller (14) mounted on a rail (12) rolling is. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der Sammel-Verteilzylinder (7) stirnseitig in Bezug auf die Rohrleitung (5) mit auswechselbaren Gleitdichtungen (7a,7b) versehen ist.Device according to one of claims 1 to 3, characterized in that the collecting distribution cylinder (7) at the end with respect to the pipe (5) with replaceable sliding seals (7a, 7b) is provided. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der genannte Rohrleitungsabschnitt (5a) konzentrisch durch den Sammel-Verteilzylinder (7) hindurchgeführt ist.Device according to one of claims 1 to 4, characterized in that said pipe section (5a) is passed concentrically through the collecting distribution cylinder (7). Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass die Rohrleitung (5) innerhalb der Sammel- Verteilkammer (9) zwei einander diametral gegenüberliegende Ausströmöffnungen (8) für das Kühlfluid aufweist.Apparatus according to claim 5, characterized in that the pipe (5) within the collective distribution chamber (9) has two diametrically opposite outflow openings (8) for the cooling fluid. Vorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die genannte Rohrleitung (5) ausserhalb des geradlinigen Rohrleitungsabschnittes (5a) im Hinblick auf eventuell auftretende Ausdehnungen und Unparallelität kardanisch befestigt ist.Device according to one of claims 1 to 6, characterized in that said pipe (5) outside of the rectilinear pipe section (5 a) is gimbal secured with regard to any expansions and unparallelism occurring. Vorrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die Ausströmöffnung (8) am geradlinigen Abschnitt (5a) der Rohrleitung (5) so angeordnet ist, dass sie in den beiden Endlagen des Sammel-Verteilzylinders (7) jeweils an einem Endabschnitt der Sammel-Verteilkammer (9) zu liegen kommt.Device according to one of claims 1 to 7, characterized in that the outflow opening (8) on the rectilinear portion (5a) of the pipe (5) is arranged so that in each of the two end positions of the collecting distribution cylinder (7) at one end portion the collecting distribution chamber (9) comes to rest.
EP20070024263 2007-04-20 2007-12-14 Combustion plant with a moving grate and a device to supply cooling liquid Active EP1983261B1 (en)

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KR101215075B1 (en) * 2012-06-20 2012-12-24 지이큐솔루션 주식회사 Stoker for water-cooled combustion grate and incinerator having the same
KR101230383B1 (en) * 2012-06-20 2013-02-12 지이큐솔루션 주식회사 Stoker incinerator to inhibit clinker generated on fire grate through side water-cooling

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EP0482251A1 (en) * 1981-03-27 1992-04-29 John N. Basic Sr. Incinerator improvements
WO1995018333A1 (en) * 1993-12-24 1995-07-06 Doikos Investments Limited Sliding fire grate module for refuse incineration in commercial-scale installations as well as method for its operation
EP0915294A1 (en) 1997-11-07 1999-05-12 Noell-KRC Energie- und Umwelttechnik GmbH Watercooled combustion grate
EP0924464A1 (en) * 1997-12-19 1999-06-23 KOCH, Theodor Grate for a combustion plant and method for its cooling
EP0989364B1 (en) 1998-09-24 2000-04-26 Von Roll Umwelttechnik AG Grate element and related method of cooling
WO2006109199A1 (en) * 2005-04-13 2006-10-19 Babcock & Wilcox Vølund Aps Cooling system for a combustion grate in an incineration plant
EP1744101A2 (en) 2005-07-16 2007-01-17 LLS Standardkessel Service GmbH Cooling fluid inlet with cylinder for grate bar

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JPS5913270U (en) * 1982-07-20 1984-01-26 采沢　賢一 automatic dishwasher
JP2989070B2 (en) * 1992-05-30 1999-12-13 澁谷工業株式会社 Cleaning equipment for filling equipment
JP2002349833A (en) * 2001-05-25 2002-12-04 Kubota Corp Grate cooling mechanism
JP2005321050A (en) * 2004-05-10 2005-11-17 Mitsui Chemicals Inc Electric fusion universal joint

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0482251A1 (en) * 1981-03-27 1992-04-29 John N. Basic Sr. Incinerator improvements
WO1995018333A1 (en) * 1993-12-24 1995-07-06 Doikos Investments Limited Sliding fire grate module for refuse incineration in commercial-scale installations as well as method for its operation
EP0915294A1 (en) 1997-11-07 1999-05-12 Noell-KRC Energie- und Umwelttechnik GmbH Watercooled combustion grate
EP0924464A1 (en) * 1997-12-19 1999-06-23 KOCH, Theodor Grate for a combustion plant and method for its cooling
EP0989364B1 (en) 1998-09-24 2000-04-26 Von Roll Umwelttechnik AG Grate element and related method of cooling
WO2006109199A1 (en) * 2005-04-13 2006-10-19 Babcock & Wilcox Vølund Aps Cooling system for a combustion grate in an incineration plant
EP1744101A2 (en) 2005-07-16 2007-01-17 LLS Standardkessel Service GmbH Cooling fluid inlet with cylinder for grate bar

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