EP0519581A2 - Guidage de paroi latérale pour grilles de combustion - Google Patents
Guidage de paroi latérale pour grilles de combustion Download PDFInfo
- Publication number
- EP0519581A2 EP0519581A2 EP92250137A EP92250137A EP0519581A2 EP 0519581 A2 EP0519581 A2 EP 0519581A2 EP 92250137 A EP92250137 A EP 92250137A EP 92250137 A EP92250137 A EP 92250137A EP 0519581 A2 EP0519581 A2 EP 0519581A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- grate
- grate bar
- bars
- grate bars
- fixed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
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 bars 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 between them, 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 shields, so that thermal expansion of the fixed grate bar supports is possible. It is not disclosed how the movable grate bar rows are to be designed in this system and how they can cooperate with the side plates. However, 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 row of grate bars 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 firebox end is formed from a sealing rail on the furnace wall and a side plate loosely mounted on the fixed grate bar support and displaceable 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 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 under the 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 rectilinear advance 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 movement 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 enables 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 carrier, 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.
- Different temperatures can prevail in the longitudinal direction of the furnace, so that the calculable expansion of the grate bars must be adapted to these temperature conditions.
- the stretch to the left or right furnace wall can be determined by choosing the position of the fixed point. If the fixed point is arranged at one end of a grate bar support, a sliding side plate can be omitted on this furnace side. However, this is not recommended for very wide ovens, since it cannot be guaranteed that the rows of grate bars will sink completely to the previous rows of grate bars when worn.
- 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 and sliding contact with the outermost grate bars on the movable grate bar rows, 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 gap strip 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 strip of the side plate. This ensures that the side plate can move when thermal expansion and still an air seal is achieved.
- the combustion chamber 15 of a waste incinerator is shielded from the environment by a furnace 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 onto the fixed grate bar supports 7.
- a sleeve 6 rests on the pin 18 with play, to which a supporting wall 4 and rib 5 are welded.
- 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 from 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 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)
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 true EP0519581A2 (fr) | 1992-12-23 |
EP0519581A3 EP0519581A3 (en) | 1993-03-17 |
EP0519581B1 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)
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 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH585372A5 (fr) * | 1975-03-17 | 1977-02-28 | Von Roll Ag | |
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 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
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 |
-
1991
- 1991-06-10 DE DE4119405A patent/DE4119405C1/de not_active Expired - Fee Related
-
1992
- 1992-06-02 EP EP92250137A patent/EP0519581B1/fr not_active Expired - Lifetime
- 1992-06-02 ES ES92250137T patent/ES2066554T3/es not_active Expired - Lifetime
- 1992-06-02 DE DE59200898T patent/DE59200898D1/de not_active Expired - Fee Related
- 1992-06-02 AT AT92250137T patent/ATE115266T1/de not_active IP Right Cessation
- 1992-06-08 KR KR1019920009886A patent/KR100200407B1/ko not_active IP Right Cessation
- 1992-06-10 US US07/896,331 patent/US5259362A/en not_active Expired - Fee Related
- 1992-06-10 CA CA002070980A patent/CA2070980C/fr not_active Expired - Fee Related
-
1995
- 1995-02-06 GR GR950400221T patent/GR3014965T3/el unknown
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH585372A5 (fr) * | 1975-03-17 | 1977-02-28 | Von Roll Ag | |
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 |
Also Published As
Publication number | Publication date |
---|---|
ATE115266T1 (de) | 1994-12-15 |
ES2066554T3 (es) | 1995-03-01 |
DE59200898D1 (de) | 1995-01-19 |
DE4119405C1 (fr) | 1993-04-08 |
KR100200407B1 (ko) | 1999-06-15 |
US5259362A (en) | 1993-11-09 |
EP0519581B1 (fr) | 1994-12-07 |
KR930000884A (ko) | 1993-01-16 |
CA2070980A1 (fr) | 1992-12-11 |
EP0519581A3 (en) | 1993-03-17 |
GR3014965T3 (en) | 1995-05-31 |
CA2070980C (fr) | 1997-07-08 |
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