EP3348904B1 - Rouille pour installation de combustion - Google Patents

Rouille pour installation de combustion Download PDF

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Publication number
EP3348904B1
EP3348904B1 EP18150396.2A EP18150396A EP3348904B1 EP 3348904 B1 EP3348904 B1 EP 3348904B1 EP 18150396 A EP18150396 A EP 18150396A EP 3348904 B1 EP3348904 B1 EP 3348904B1
Authority
EP
European Patent Office
Prior art keywords
grate
pin
coupling element
opening
row
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.)
Active
Application number
EP18150396.2A
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German (de)
English (en)
Other versions
EP3348904A1 (fr
Inventor
Andreas Hehn-Mark
Bernd Stein
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.)
Richard Kablitz GmbH
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Richard Kablitz GmbH
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Filing date
Publication date
Application filed by Richard Kablitz GmbH filed Critical Richard Kablitz GmbH
Publication of EP3348904A1 publication Critical patent/EP3348904A1/fr
Application granted granted Critical
Publication of EP3348904B1 publication Critical patent/EP3348904B1/fr
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Classifications

    • 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
    • F23H17/00—Details of grates
    • F23H17/12—Fire-bars

Definitions

  • the invention relates to a grate for combustion plants with grate bars, which are arranged along a row direction side by side to a grate row, wherein the grate bars each have a flat extending bottom on an upper surface, the bottoms in their entirety form a portion of a grate surface for kiln.
  • Grates for combustion plants and corresponding firing systems are known from the prior art, for example DE 195 25 106 C1 .
  • a grate is acted upon from the upper side at its grate surface with kiln, which is guided over the grate, wherein from the bottom air is supplied for combustion.
  • the grate rows consist of several adjacently arranged grate bars, which are bolted together by means of nuts and threaded rods, which are guided through passages in the grate bars (several grate bars blocked into a block).
  • the kiln can be passed over the grate surface as possible unhindered, these fittings are arranged on the underside of the grate bars.
  • EP 0 056 139 A2 discloses a furnace grate for a combustion furnace with grate bars, wherein projections formed on the ribs of the side walls of adjacent grate bars towards the underwinding area and can be connected to one another via a coupling element.
  • the projections are strip-like and formed on the rib so that they allow abutment of two adjacent side walls and protrude with a protrusion formed by a shoulder shoulder from the side walls, wherein the coupling element consists of a portion of a rectangular hollow profile with a cavity which the projections encompasses the side cheeks.
  • the invention has for its object to facilitate assembly and maintenance work on a grate for combustion plants with simple structural means.
  • the invention solves this problem with the features of claim 1.
  • the grate for combustion plants has grate bars which are arranged along a row direction next to one another to form a grate row, two in the grate row adjacent grate bars each have at least one pin on mutually facing sides, wherein the pin is arranged in an opening portion formed in the bottom, wherein a coupling element is provided which has a recess for one of the pins on opposite side surfaces, and wherein the coupling element is formed is that this can be inserted from the top into an opening which is formed by the opening portions of the two adjacent grate bars, and pushed along a sliding direction on the pins, so that the recesses and the pins engage behind each other in the row direction.
  • grate bars are interlocked with each other, such blocks may consist of 4 to 5 grate bars.
  • a row of grate bars can be completely locked together and consist of several blocks (several blocks blocked together form a row of grate bars).
  • the coupling element can be easily introduced from the top of the grate surface in a direction open to the grate surface opening and pushed onto the pins.
  • the coupling element To disassemble the coupling element only has to be moved along the direction of displacement and out of the opening be removed. These steps can be done by hand or by hammer and chisel.
  • the pin and the recess are preferably dimensioned such that the coupling element can be pushed by hand onto the pins.
  • the coupling element can also be referred to as a clip.
  • the coupling element may be formed as a steel part (casting). In addition to a configuration of a grate bar on one side with a pin and a configuration with two or three pins on one side is conceivable.
  • the bottom has at the opening portion on a side open to the adjacent grate bar recess.
  • the pins and / or the opening sections are preferably aligned with one another on mutually facing sides of the adjacent grate bars.
  • the grate row extends in particular transversely to the conveying direction of the combustible material.
  • a row of grates may be configured as stationary relative to the grate or as grate row movable in particular along the conveying direction. This allows the kiln to be circulated and pushed further.
  • the combustion system can be a cogeneration plant, in particular a solid combustion cogeneration plant.
  • waste fractions with a high calorific value such as RDF (Refuse Derived Fuel), biomass such as wood chips, bark, wood pellets, rice hulls or the like can be used.
  • the grate bar may have at the bottom a recess for supporting the grate bar on a grate bar (e.g., a round shaft).
  • a grate bar e.g., a round shaft
  • the grate bar on the grate surface have a perforated and a hole-free section. It is also conceivable that the grate bar on the oriented in the row direction sides each have a side wall from which protrudes the pin.
  • a spacer or spacer may be provided, which is designed such that it can be inserted into the opening and closes the not closed by the coupling element cross-section of the opening.
  • the spacer serves to secure the position of the coupling element.
  • a closed grate surface is achieved by the spacer, so that the firing material can be further promoted unhindered and no kiln gets into the area under the grate.
  • the spacer closes when fully pushed onto the pin coupling element, the free opening cross-section.
  • the coupling element and the spacer element are formed such that they close the opening together.
  • the coupling element and the spacer element are arranged flush or slightly recessed to the grate surface, for example by 1 to 3 millimeters.
  • the spacer element may be formed cuboid.
  • the spacer element may have a groove extending from one end surface to an opposite end surface of the spacer element. Due to the weakening of the cross section of the spacer element a predetermined breaking point is formed, which facilitates disassembly of the spacer element, since this can be separated, for example by a hammer blow in several parts that can be easily removed.
  • the groove may extend over at least 50 percent of the height of the spacer element.
  • a groove may be formed in the coupling element, the longitudinal direction of which extends parallel to a longitudinal direction of the recess or recesses.
  • a predetermined breaking point is created in an overload in the row direction (transverse direction of the grate bars).
  • the grate bars are thus protected from damage, since at an overload in the row direction, the coupling element breaks at the groove, but not a grate bar.
  • the disassembly of the coupling element is facilitated, since the coupling element, if no break has been made on the groove, for example, can be separated by a hammer blow into several parts that can be easily removed.
  • the groove may extend over at least 50 percent of the height of the coping element.
  • the coupling element and / or the pin may have a length of 30 to 50 percent of the length of the opening in the sliding direction. This is in particular the extent of the opening orthogonal to Row direction in the grate area.
  • the coupling element can be easily inserted into the opening, wherein a stable coupling of the grate bars is created by the length of the engagement between the recess and pin in the sliding direction.
  • a guide may be formed on the mutually facing sides of the grate bars, in each case on the side facing away from the bottom of the pin, whose guide surface is oriented parallel to the ground or to the grate surface. This is avoided by simple structural means falling through of coupling element and / or spacer element through the opening under the rust, as they rest on the guide. It is also advantageous if the guide is positioned such that when inserted into the opening coupling element, the pins and the recesses for the pins are aligned. The guide can thus serve as an insertion aid for the coupling element.
  • the guide may be formed as a web which protrudes from a side surface or a side wall of the grate bar. The longitudinal direction of the web can be arranged parallel to the ground or to the grate surface.
  • the pin may extend along an extension direction of the grate bar, in particular from a side surface or a side wall of the grate bar, wherein on the pin at least one rear grip portion is formed, the transverse or oblique, preferably orthogonal, to the extension direction protrudes from the pin.
  • the pin and the rear grip portion are integrally formed with a side surface or a side wall of the grate bar.
  • the extension direction may coincide with the width direction.
  • a pin has two rear engagement portions facing away from each other, wherein the pin may be formed in cross-section, for example T-shaped (pin with double rear handle sections similar to a dovetail guide).
  • the rear grip portion may be rounded in particular semicircular at its free end, have a rectangular cross section or have a cross section which widens towards the free end.
  • the recess may be complementary to the pin.
  • the complementary recess extends in particular along a longitudinal direction through the coupling element.
  • the recesses and the pins can engage behind each other in a direction oriented orthogonal to the grate surface.
  • the connection between the coupling element and pin is further optimized because a positive connection in two Directions can be achieved, not only in the width direction, but also orthogonal to the grate surface.
  • the grate bars are secured not only in the row direction but also orthogonal to the grate surface relative to each other.
  • the coupling element may have a tongue which engages behind the pin, in particular on the side remote from the rear grip portion.
  • This tongue is also important in disassembly, as in a possibly necessary parts (eg by hammer blow) of the coupling element in several components, the tongue avoids falling down of the coupling element under the grate bar by contact with the pin or the guide.
  • the grate bar can have an opening section with a respective pin arranged in each case on both sides oriented in the direction of the row.
  • a grate bar in the row direction can be coupled on both sides with other grate bars.
  • the grate bar can have at least one of the two sides oriented in the direction of the row two opening sections each having a pin arranged therein.
  • FIG. 1 shows a grate for combustion plants, which is generally designated by the reference numeral 10.
  • the grate 10 has grate bars 12 which are arranged along a row direction 14 next to one another to form a grate row 16, 18.
  • the grate bars 12 each have on a top side 20 a flatly extending bottom 22.
  • the bottoms 22 in their entirety form a portion of a grate surface 24 for kiln.
  • Each pin 34, 36 is disposed in an opening portion 38, 40 formed in the bottom 22.
  • a coupling element 42 is provided, which on opposite side surfaces 44, 46 each have a recess 48, 50 for one of the pins 34,36 (see FIG. 2 and 4 ).
  • the coupling element 42 is designed such that it can be inserted from the upper side 20 into an opening 52 which is formed by the opening sections 38, 40 of the two adjacent grate bars 12 and pushed along a sliding direction 54 onto the pins 34, 36.
  • the recesses 48, 50 and the pins 34, 36 engage behind each other in the row direction 14.
  • the row direction 14 is oriented transversely to the feed direction 56, along which the kiln is guided over the grate 10 (see FIG FIG. 1 ).
  • a grate bar 12 has at its bottom 22 a perforated zone 58 and a hole-free zone 60.
  • the grate bar 12 has a side wall 62 on each side.
  • the grate bar 12 has on its underside a receptacle for supporting the grate bar 12 on a grate bar 64, for example a round shaft.
  • the grate 10 may have moving and stationary rows of grates.
  • the grate row 16 is designed to be displaceable relative to the fixed grid row 18 and can be moved along the feed direction 56 (not shown).
  • a spacer 66 is provided, which is designed such that it can be inserted into the opening 52 and the not closed by the coupling element 42 cross-section of the opening 52 closes (see FIG. 1 and 2 ). Coupling element 42 and spacer 66 completely close the opening 52 with each other. Coupling element 42 and spacer 66 have a cuboid shape.
  • the spacer 66 has a groove 68 extending from one end surface 70 to an opposite end surface 72 of the spacer 66 (see FIG FIG. 5 ).
  • the groove 68 represents a predetermined breaking point.
  • the groove 68 extends over a height of about 50 percent of the spacer 66.
  • a groove 74 is formed, whose longitudinal direction 76 extends parallel to a longitudinal direction 78 of the recess 48, 50 (see FIG. 2 ).
  • the groove 74 represents a predetermined breaking point, which yields in an acting on the grate bars 12 overload in the row direction 14 and thus prevents damage to the grate bars 12.
  • the groove 74 extends over a height of about 50 percent of the coupling element 42 (see FIG. 4 ).
  • the coupling element 42 and the pins 34, 36 have a length of 30 to 50 percent of the length of the opening 52 in the sliding direction 54 (see FIG. 2 and 3 ).
  • a guide 80 is formed in each case on the side facing away from the bottom 22 of the pin 34, 36, the guide surface 82 is formed parallel to the bottom 22 (see FIG. 3 and 4 ).
  • the guide 80 is formed as a web which protrudes from the side surface or side wall 62 of the grate bar 12.
  • the pin 34 extends along an extension direction 84 away from the grate bar 12 of the side wall 62, wherein on the pin 34, 36 at least one rear grip portion 86 is formed, which protrudes orthogonal to the extension direction 84 from the pin 34, 36 in the direction of the bottom 22 (according to above).
  • the rear grip portion 86 is rounded at its free end, in particular with a semicircular cross-section.
  • the rear grip portion 86 may also protrude away from the bottom 22 away from the spigot 34, 36 (see FIG FIG. 6 and 7 ). In this case, the rear grip portion 86 may have a constant rectangular cross-section (see FIG. 7 ). It is also conceivable that the rear grip portion 86 widens in the direction of its free end (see FIG. 6 ).
  • the recess 48, 50 is in particular complementary to the pin 34, 36 is formed.
  • the recesses 48, 50 and the pins 34, 36 engage behind each other in a direction orthogonal to the grate surface 24 oriented direction 88.
  • the coupling element 42 may have a tongue portion 90 which engages behind the pin 34, 36 on the side remote from the rear grip portion 86 side (see FIG. 4 . 6 and 7 ).

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Incineration Of Waste (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)

Claims (10)

  1. Grille (10) pour des fours avec des barreaux de grille (12) qui, le long d'une direction de rangées (14), sont agencés côte à côte en une rangée de grille (16), dans laquelle les barreaux de grille (12) présentent chacun un plancher (22) s'étendant à plat au niveau d'un côté supérieur (20), dans laquelle les planchers (22) forment dans leur ensemble une section d'une surface de grille (24) pour un produit à cuire, dans laquelle deux barreaux de grille adjacents (26, 28) dans la rangée de grille (16) présentent chacun une broche (34, 36) sur des côtés opposés (30, 32), dans laquelle la broche (34, 36) est agencée dans une section d'ouverture (38, 40) formée dans le plancher (22), dans laquelle un élément de couplage (42) est prévu, qui présente un évidement (48, 50) pour l'une des broches (34, 36) respectivement sur des surfaces latérales opposées (44, 46), et dans laquelle l'élément de couplage (42) est formé de telle sorte que celui-ci peut être inséré depuis le côté supérieur (20) dans une ouverture (52) qui est formée à travers la section d'ouverture (38, 40) des deux barreaux de grille adjacents (26, 28), et peut être coulissée le long d'une direction de coulissement (54) sur les broches (34, 36), dans laquelle les évidements (48, 50) et les broches (34, 36) viennent en prise les uns avec les autres dans la direction de rangée (14).
  2. Grille (10) selon la revendication 1, dans laquelle
    un élément d'espacement (66) est prévu, qui est formé pour pouvoir être inséré dans l'ouverture (52) et pour fermer la section transversale de l'ouverture (52) non fermée par l'élément de couplage (42).
  3. Grille (10) selon la revendication 2, dans laquelle
    l'élément d'espacement (66) présente une rainure (68) s'étendant d'une surface d'extrémité (70) à une surface d'extrémité opposée (72) de l'élément d'espacement (66).
  4. Grille (10) selon l'une quelconque des revendications précédentes, dans laquelle une rainure (74) est formée dans l'élément de couplage (42), dont la direction longitudinale (76) s'étend parallèlement à une direction longitudinale (78) de l'évidement (48, 50).
  5. Grille (10) selon l'une quelconque des revendications précédentes, dans laquelle l'élément de couplage (42) et/ou la broche (34, 36) présente(nt) une longueur de 30 à 50 % de la longueur de l'ouverture (52) dans la direction de coulissement (54).
  6. Grille (10) selon l'une quelconque des revendications précédentes, dans laquelle un guide (80) est formé sur les côtés se faisant face (30, 32) des barreaux de grille (12) respectivement au niveau du côté opposé au plancher (22) de la broche (34, 36), dont la surface de guidage (82) est formée parallèlement au plancher (22).
  7. Grille (10) selon l'une quelconque des revendications précédentes, dans laquelle la broche (34, 36) s'étend le long d'une direction d'extension (84) depuis le barreau de grille (12), et dans laquelle au moins une section de mise en prise (86) est formée au niveau de la broche (34, 36), faisant saillie transversalement ou obliquement par rapport à la direction d'extension (84) à partir de la broche (34, 36).
  8. Grille (10) selon l'une quelconque des revendications précédentes, dans laquelle l'évidement (48, 50) est formé complémentaire à la broche (34, 36).
  9. Grille (10) selon l'une quelconque des revendications précédentes, dans laquelle l'évidement (48, 50) et la broche (34, 36) viennent en prise l'un avec l'autre dans une direction (88) orientée orthogonalement par rapport à la surface de grille (24).
  10. Four avec une grille (10) selon l'une quelconque des revendications précédentes.
EP18150396.2A 2017-01-11 2018-01-05 Rouille pour installation de combustion Active EP3348904B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102017100408.4A DE102017100408B4 (de) 2017-01-11 2017-01-11 Rost für Feuerungsanlagen

Publications (2)

Publication Number Publication Date
EP3348904A1 EP3348904A1 (fr) 2018-07-18
EP3348904B1 true EP3348904B1 (fr) 2019-10-30

Family

ID=60935724

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18150396.2A Active EP3348904B1 (fr) 2017-01-11 2018-01-05 Rouille pour installation de combustion

Country Status (2)

Country Link
EP (1) EP3348904B1 (fr)
DE (1) DE102017100408B4 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020199099A1 (fr) * 2019-04-01 2020-10-08 深圳市能源环保有限公司 Segment de grille anti-feu basculante d'incinérateur d'ordures intégré doté d'une couche de soudure de cordon

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019129171A1 (de) * 2019-10-29 2021-04-29 Alite Gmbh Roststab für Stufenrost
EP3982044B1 (fr) * 2020-10-08 2024-04-24 Martin GmbH für Umwelt- und Energietechnik Procédé pour maintenir ensemble des barreaux de grille adjacents, ainsi qu'un ensemble de barreaux de grille
DE102020006801A1 (de) 2020-10-08 2022-04-14 Martin GmbH für Umwelt- und Energietechnik Verfahren zum Zusammenhalten von nebeneinander liegenden Roststäben sowie eine Roststabanordnung
CN112228885B (zh) * 2020-10-30 2023-06-27 重庆电力高等专科学校 一种炉排出灰防卡结构

Family Cites Families (6)

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Publication number Priority date Publication date Assignee Title
GB220143A (en) * 1923-07-18 1924-08-14 James Jones Improvements in or relating to firegrates
DE3049086C2 (de) * 1980-12-24 1983-07-14 Widmer & Ernst AG, 5430 Wettingen Roststabreihe für Feuerungsroste von Verbrennungsöfen
DE3612391A1 (de) * 1986-04-12 1987-10-15 Kablitz Richard Ges Schraegrost fuer feuerungen
FR2622278B1 (fr) * 1986-05-22 1991-07-12 Mediterranee Const Navales Ind Dispositif de liaison de barreaux d'une grille a mouvement de recul d'un foyer de combustion
FR2609530B1 (fr) * 1987-01-09 1991-01-11 Traitement Indl Residus Urbain Grille de foyer, avec des barreaux transversaux en elements solidarises par leurs faces frontales
DE19525106C1 (de) 1995-06-29 1997-03-13 Richard Kablitz & Mitthof Gmbh Feuerungsanlage

Non-Patent Citations (1)

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Title
None *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020199099A1 (fr) * 2019-04-01 2020-10-08 深圳市能源环保有限公司 Segment de grille anti-feu basculante d'incinérateur d'ordures intégré doté d'une couche de soudure de cordon

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Publication number Publication date
DE102017100408B4 (de) 2018-10-31
DE102017100408A1 (de) 2018-07-12
EP3348904A1 (fr) 2018-07-18

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