EP0519581B1 - Guidage de paroi latérale pour grilles de combustion - Google Patents

Guidage de paroi latérale pour grilles de combustion Download PDF

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Publication number
EP0519581B1
EP0519581B1 EP92250137A EP92250137A EP0519581B1 EP 0519581 B1 EP0519581 B1 EP 0519581B1 EP 92250137 A EP92250137 A EP 92250137A EP 92250137 A EP92250137 A EP 92250137A EP 0519581 B1 EP0519581 B1 EP 0519581B1
Authority
EP
European Patent Office
Prior art keywords
grate
bars
grating
grate bars
furnace
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.)
Expired - Lifetime
Application number
EP92250137A
Other languages
German (de)
English (en)
Other versions
EP0519581A3 (en
EP0519581A2 (fr
Inventor
Friedrich Krieger
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.)
Noell Abfall- und Energietechnik GmbH
Original Assignee
Noell Abfall- und Energietechnik 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 Noell Abfall- und Energietechnik GmbH filed Critical Noell Abfall- und Energietechnik GmbH
Publication of EP0519581A2 publication Critical patent/EP0519581A2/fr
Publication of EP0519581A3 publication Critical patent/EP0519581A3/de
Application granted granted Critical
Publication of EP0519581B1 publication Critical patent/EP0519581B1/fr
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
    • F23H17/00—Details of grates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23H—GRATES; CLEANING OR RAKING GRATES
    • F23H11/00—Travelling-grates

Definitions

  • the invention relates to a sliding grate for incinerators with grate bars arranged on fixed and movable grate bar supports and a lateral guidance and sealing of a combustion grate.
  • a particular problem is formed by the low-temperature non-ferrous metal waste flowing through such gaps between and next to the grate bars or e.g. B. also steel scrap, which clamps between the grate bars and thus limits the mobility of the grate bars.
  • Feed grates for waste incinerators are also known (CH-C-585 372), the grate rods of which are spring-loaded without gaps and which extend transversely to the grate and have rows of grate bars which can be moved in the feed direction of the grate.
  • This oven has a plate that limits the grate on the side, which is also pressed onto the grate bars using coil springs.
  • a system is known in practice in which such shields compress the grate bars with the aid of a tensioning device supported on the furnace wall.
  • the tensioning device is formed from several hinges and spring-loaded telescopic guides in between, which are attached to the plate and the furnace wall.
  • the system is very complex to build due to its variety of parts.
  • a sliding grate is known from EP-B-0 165 432, in which the grate bars arranged in the manner of roof tiles have air outlet slots for under air at the front and the side shields are connected together by a tie rod, disc springs being arranged between the grate bars to compensate for expansion. Sealing profiles attached to the furnace wall have a defined play with the side plates, so that thermal expansion of the fixed grate bar supports is possible. It is not disclosed how the movable grate bar rows should be designed in this system and how they can cooperate with the side plates. The problem of uncontrolled access to under air is only eliminated with relatively new stoves. As soon as the grate bars are worn out due to temperature influences and friction on their surfaces, they no longer lie on top of each other.
  • the tie rod prevents the grate bar row from sinking onto the grate bars of the previous row, thus creating gaps between the surfaces and lower surfaces of the grate bars.
  • the invention is therefore based on the problem of tensioning the grate bars of the fixed and movable grate bar rows as simply as possible, wherein no significant air gaps should arise between the individual grate bars and towards the furnace wall.
  • each grate bar support has a fixed bearing, the adjacent grate bars being connected to one another and at least on one side of the sliding grate a combustion chamber closure is formed from a sealing rail on the furnace wall and a side plate which is loosely mounted on the fixed grate bar support and can be displaced by means of drivers on the outer grate bars.
  • the side plate itself consists of a sleeve loosely encompassing the grate bar support and a support wall screwed or welded to it, which in turn is connected to a cover strip which is parallel to parts of the sealing rail and a wear plate which positively grips the driver with play.
  • the outer grate bars on the furnace walls have a variable width and are fitted in the cold state with play to the wear plates.
  • the grate bars coupled in a row lie loosely, positively held in the feed direction, on the grate bar supports. This allows them to perform a slight vertical tilting movement around their point of support and therefore always rest on the grate bars in front of them. This compensates for surface wear on the grate bars and avoids undesired gaps with uncontrolled supply of air through the rows of grate bars.
  • the grate bars do not wear uniformly over their entire surface, but instead form linear depressions along the row of grate bars.
  • the primary straight-line feed of the movable grate bar supports is converted into an increasingly sinusoidal movement of the heads of the grate bars with increasing duration of the furnace travel. This sequence of movements of the grate bars is only made possible by tilting the grate bars on the grate bar support. This type of attachment of the grate bars allows easy replacement of individual grate bars when the furnace is not in operation.
  • the outer grate bars are dimensioned so that after placing all grate bars on a grate bar support, they leave the remaining gap between the wear plate and the extreme one Close the grate bar. This compensates for the manufacturing tolerances of the grate bars.
  • a circular segment-like driver is screwed to the outer grate bars towards the furnace wall, which engages in a gap in the side plate and can thus move this side plate, which is supported on the grate bar support with play, when the grate bars expand.
  • the shape of the driver ensures that the side plate is moved even when the grate bars tilt.
  • the side plates arranged one behind the other only rest on the fixed grate bar supports.
  • the movable grate bar supports of the sliding grate arranged between these have no such driver, since they carry out their lifting movement between the side plates.
  • the side shields are equipped with wear plates, which can consist of cast plates, for example. Due to thermal expansion and contact with the combustion material on the sliding grate as well as sliding contact with the outermost grate bars on the movable rows of grate bars, these wear plates must be replaced from time to time. As mentioned at the beginning, the wear plates only extend from one fixed grate bar support to the next and there there is little play to the adjacent wear plates. The typical length of the wear plates is, for example, 600 mm; they are therefore easy to replace due to their arrangement and size.
  • a split bar can also be arranged, which is held positively by the sealing rail in the lateral direction and rests loosely on the surface of the cover bar of the side plate. This ensures that the side plate can move with thermal expansion and still an air seal is achieved.
  • the combustion chamber 15 of a waste incinerator is shielded from the environment by an oven wall 2 consisting of a sheet steel construction 1.
  • a two-lane sliding grate the surface of which is formed by the grate bars 11, 12 on the fixed grate bar supports 7 and grate bars 27 on the movable grate bar supports 26 (FIG. 2), lies on a substructure consisting of double-T beams 20 and fixed grate bar supports 7 and the movable grate bar supports, not shown in FIG. 1.
  • the right path of the sliding grate shown is limited on the one hand by the furnace wall 2 and on the other hand by the central support 21.
  • a support bar 19, which ends in a cylindrical pin 18 on both sides, is welded to the fixed grate bar supports 7.
  • This support wall 4 serves as a support for the cover strip 10 and as an abutment for the wear plate 9 made of cast iron, both of which are connected to the support wall by screw connections 24.
  • This complete side plate 16 made of the parts 4, 9, 10 screwed together is positively connected to the grate bars 11, 12 by the segment-like drivers 8 (FIG. 3) which are held on the grate bar 12 by screw connections 22.
  • a bracket 3 is welded onto the sheet steel construction 1 of the furnace wall 2 and serves as a bearing for the sealing rail 13.
  • the gap between the Sealing rail 13 and the cover strip 10 is closed by a split strip 14, which is loosely arranged in a recess between the sealing rail 13 and the holder 3.
  • a split strip 14 which is loosely arranged in a recess between the sealing rail 13 and the holder 3.
  • a grate bar 11 is fixed in the middle of the grate bar support 7 in the horizontal direction by two stops 28.
  • the sealing rail 17 is arranged on the center support 21 towards the center of the furnace.
  • the sliding grate is laterally delimited by a side plate 16, which is identical to the side plate arranged on the right-hand furnace side.
  • no gap strip is arranged here between the sealing rail 17 and the cover strip 10.
  • Fig. 2 shows that the wear plates 9 each rest on the fixed grate bar supports 7 and their length is limited to the distance between the fixed grate bar supports 7.
  • the intermediate movable grate bar support 26 with grate bar 27 ends in front of the wear plates 9.
  • the support wall 4 is twice as long as a wear plate 9; the support walls 4 have their butt joints between the fixed grate bar supports 7.
  • Fig. 3 shows the attachment of the driver 8 by screw 22 on the grate bar 12; these grate bars 12 and all other grate bars have a conically opening recess 25 - larger than necessary for a positive fit with a support bar 19 - and therefore sit loosely on the support bar 19 of the fixed grate bar support 7 so that they can tip forward.
  • a grate bar length of approximately 500 mm a thickness of approximately 120 mm and an installation angle of approximately 24 °

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Incineration Of Waste (AREA)
  • Baking, Grill, Roasting (AREA)

Claims (4)

  1. Four comportant des barreaux de grille (11, 12, 27) qui sont posés de façon lâche sur des supports de barreaux (7, 26) en alternance fixes et mobiles et qui forment une grille d'avance, dans lequel au moins un barreau de grille a un point fixe (28) agissant horizontalement, sur chaque support de barreau, les barreaux de grille voisins étant reliés entre eux, et qui comporte, au moins sur un côté d'un foyer (15), une bordure comprenant un rail d'étanchéité (13) et une plaque latérale (16) montée de façon lâche sur les supports de barreaux mobiles (7) et apte à être déplacée à l'aide d'un organe d'entraînement (8) prévu sur les barres de grille extérieures (12).
  2. Four selon la revendication 1, caractérisé en ce que le point fixe (28) se trouve approximativement au milieu du support de barreau (7, 26).
  3. Four selon la revendication 1, caractérisé en ce que la plaque latérale (16) se compose d'un manchon (6) entourant de façon lâche le support de barreau (7), d'une paroi d'appui (4) reliée fermement audit manchon, d'une barre de recouvrement (10) et d'une plaque d'usure (9) qui entoure l'organe d'entraînement (8) par complémentarité de forme et avec du jeu.
  4. Four selon l'une des revendications 1 à 3, caractérisé en ce qu'un interstice entre le rail d'étanchéité (13) et la plaque latérale (16) est fermé par une barre d'interstice (14) posée de façon lâche sur la plaque latérale.
EP92250137A 1991-06-10 1992-06-02 Guidage de paroi latérale pour grilles de combustion Expired - Lifetime EP0519581B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4119405A DE4119405C1 (fr) 1991-06-10 1991-06-10
DE4119405 1991-06-10

Publications (3)

Publication Number Publication Date
EP0519581A2 EP0519581A2 (fr) 1992-12-23
EP0519581A3 EP0519581A3 (en) 1993-03-17
EP0519581B1 true EP0519581B1 (fr) 1994-12-07

Family

ID=6433791

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92250137A Expired - Lifetime EP0519581B1 (fr) 1991-06-10 1992-06-02 Guidage de paroi latérale pour grilles de combustion

Country Status (8)

Country Link
US (1) US5259362A (fr)
EP (1) EP0519581B1 (fr)
KR (1) KR100200407B1 (fr)
AT (1) ATE115266T1 (fr)
CA (1) CA2070980C (fr)
DE (2) DE4119405C1 (fr)
ES (1) ES2066554T3 (fr)
GR (1) GR3014965T3 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5377663A (en) * 1993-06-07 1995-01-03 Wheelabrator Environmental Systems, Inc. Grate combustion system
DE4431266C1 (de) * 1994-09-02 1995-10-05 Noell Abfall & Energietech Vorrichtung zur Lagerung von Rosten
DE29809059U1 (de) 1998-05-19 1999-02-04 Stadick, Robert, 85599 Parsdorf Rost für Brennstoffkessel
ES2490252T3 (es) * 2011-10-21 2014-09-03 Martin GmbH für Umwelt- und Energietechnik Módulo de parrilla de etapas para una parrilla de combustión de empuje

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH585372A5 (fr) * 1975-03-17 1977-02-28 Von Roll Ag
DE2622965C2 (de) * 1976-05-21 1978-04-06 Josef Martin Feuerungsbau Gmbh, 8000 Muenchen Kompensationseinrichtung für Abmessungsänderungen von Bauteilen aufgrund von Temperaturschwankungen, insbesondere bei Feuerungen
DE2652475C3 (de) * 1976-11-18 1979-08-16 L. & C. Steinmueller Gmbh, 5270 Gummersbach Verbrennungsrost
EP0165432B1 (fr) * 1984-05-21 1989-05-10 KOCH, Theodor Four, notamment pour la combustion des ordures, du charbon, du bois et des déchets industriels
DE3813441A1 (de) * 1987-04-25 1988-11-03 Mrklas Louis Roststabelement fuer eine schubrostfeuerung zur muellverbrennung
SE459521B (sv) * 1987-11-13 1989-07-10 B & S Miljoeteknik As Taetningsanordning vid axel till roerlig rost
DE4105331C1 (fr) * 1991-02-18 1992-04-16 Noell - K + K Abfalltechnik Gmbh, 4040 Neuss, De

Also Published As

Publication number Publication date
EP0519581A3 (en) 1993-03-17
ES2066554T3 (es) 1995-03-01
GR3014965T3 (en) 1995-05-31
DE59200898D1 (de) 1995-01-19
KR100200407B1 (ko) 1999-06-15
CA2070980A1 (fr) 1992-12-11
KR930000884A (ko) 1993-01-16
DE4119405C1 (fr) 1993-04-08
CA2070980C (fr) 1997-07-08
ATE115266T1 (de) 1994-12-15
US5259362A (en) 1993-11-09
EP0519581A2 (fr) 1992-12-23

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