EP2362144A1 - Barreau de grille - Google Patents

Barreau de grille Download PDF

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Publication number
EP2362144A1
EP2362144A1 EP10154136A EP10154136A EP2362144A1 EP 2362144 A1 EP2362144 A1 EP 2362144A1 EP 10154136 A EP10154136 A EP 10154136A EP 10154136 A EP10154136 A EP 10154136A EP 2362144 A1 EP2362144 A1 EP 2362144A1
Authority
EP
European Patent Office
Prior art keywords
grate
grate bar
longitudinal
slot
bar according
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.)
Withdrawn
Application number
EP10154136A
Other languages
German (de)
English (en)
Inventor
Dieter Koch
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.)
Seko-Patent GmbH
Seko Patent GmbH
Original Assignee
Seko-Patent GmbH
Seko Patent 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 Seko-Patent GmbH, Seko Patent GmbH filed Critical Seko-Patent GmbH
Priority to EP10154136A priority Critical patent/EP2362144A1/fr
Publication of EP2362144A1 publication Critical patent/EP2362144A1/fr
Withdrawn legal-status Critical Current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
    • F23H3/00—Grates with hollow bars
    • F23H3/02—Grates with hollow bars internally cooled

Definitions

  • the present invention relates to a grate bar according to the preamble of claim 1.
  • combustion plants with combustion chambers are conventionally used, in which the fuel is applied, for example, to a mechanically operated grate and burned on it ,
  • Combustion plants are generally processed combustion material with high and low calorific value, so that in the grate elements used large heat-related problems can occur. Particularly in the area of the grate tips, stress cracks can occur due to the resulting high temperatures in known grate arrangements.
  • the object of the present invention is to prevent stress cracks occurring on a combustion grate as a result of different temperatures.
  • the object of the invention is achieved by means of a grate bar according to the wording of claim 1.
  • a grate bar for incinerators with a substantially closed, the combustion side facing surface, a rear, for resting on a grate support for forming the grate formed carrier area and a front, between the surface and top rounded nose area with formed on the bottom support area, and with from the bottom of the grate projecting cooling fins for air cooling. It is proposed that at least one longitudinal slot extending at least along a part of the surface be provided in the grate surface.
  • the slot is arranged substantially centrally in the longitudinal direction in the surface of the grate.
  • the substantially longitudinally extending slot may correspond to at least half the length of the grate element. Also, a longer longitudinal extent, for example, according to 3 ⁇ 4 the length of the grate element is possible.
  • the proposed longitudinal slot may be formed in its cross section such that it is formed in the upper, directed against the surface of the grate element part by parallel side walls, to form a substantially rectilinear slot, while the lower opening, directed against the region of the cooling fins of the grate element, the slot towards the opening has obliquely outwardly extending walls or conically diverging longitudinal walls.
  • the grate elements proposed according to the invention may have additional slot-like openings in the head or nose region, as known from the prior art.
  • FIG. 1 shows in plan view of a grate bar 1 according to the invention for an incinerator.
  • Such grate bars or elements can be arranged side by side to virtually any width connected to form a movable grate bar for use in an incinerator.
  • the rear, in FIG. 1 The left end of the grate bar 1 is formed nose-like as a support portion 2 to be fixed in a combustion device in a conventional manner in a holder.
  • the front end of the grate bar 1 has a rounded edge, respectively.
  • Nose 3 as a continuation of the overhead combustion surface 5 on.
  • Supporting area 2 as well as nose 3 are formed such that grate bars 1 overlap in an imbricated manner overlap, that is, in each case the support surfaces 4 located below the nose 3 are supported on the surfaces 5 of the following grate bars 1 respectively. rest and thus form the grate surface of the incinerator.
  • the surface is made transparent so that the cooling ribs 11 arranged underneath can be seen. Also visible are transverse ribs 12 for reinforcing the grate bar and for resting on an underlying support structure (not shown) for holding or optionally moving the individual grate bars or elements.
  • the combustion air can pass through the thus formed rust surface from the space below the grate in the incinerator in the combustion chamber above the combustion tube, in the side wall 13 of the individual grate bars 1 advantageous Siken resp.
  • Recesses 1 'and 1 are formed, which each form a passage gap for the combustion air between adjacent grate bars 1.
  • These recesses 1' and 1" are advantageously arranged extending at least in the front grate bar region from the nose 3 to the rear, for various purposes in the Length between about 15% to 80% of the total length of the grate bar.
  • FIGS. 4 and 5 are cross sections through the grate bar 1 off FIG. 1 shown, along the lines BB and AA. It can be seen along with the formation of the central longitudinal section 7 that the below-projecting cooling fins 11 may have different expansions down. While according to FIG. 4 two more projecting and two cooling ribs are provided with a small width, have the cooling fins in the region of the section AA in FIG. 5 equal expansions down.
  • FIG. 4 are also the side recesses 1 'visible in the side walls 13 of the grate bar 1, while no recesses are provided in the region of the section AA.
  • FIG. 6 shows in cross-section and in enlargement longitudinal slot 7, which in the upper region 8, the surface 5 of the grate bar 1 facing parallel longitudinal walls, while facing the cooling fins in the lower region 10, the walls are tapered outwardly. That is, in the lower region, the longitudinal slot 7 has a funnel-like opening.
  • the longitudinal slot 7 now prevents stress cracks in the grate surface 5 by the grate surface can expand towards the slot at elevated temperatures.
  • the funnel-shaped design of the slot down also leads to cooling air from below against the Surface 5 of the grate bar 1 is guided to allow a certain relaxation in the grate surface.
  • FIG. 7 a further embodiment variant of a grate bar 1 according to the invention is represented, in that here longitudinal slots 17 are each formed in the region of the side surfaces or longitudinal edges of the grate bar. As a result, a relaxation of the grate surface 5 is made possible against the side edges.
  • longitudinal slots 17 are each formed in the region of the side surfaces or longitudinal edges of the grate bar.
  • Another advantage in the inventive design of the grate elements or a grate assembly of an incinerator is that as a material for the individual grate elements, for example, steel can be used, with different material thickness.
  • a material for the individual grate elements for example, steel can be used, with different material thickness.
  • FIGS. 1 to 7 illustrated embodiments are only variants that modified in x-any manner, modified or by other elements can be supplemented.
  • the illustrated grate elements have air cooling, the arrangement of longitudinal slots is also possible with grate bars with liquid cooling or the use of a cooling tube register.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Incineration Of Waste (AREA)
EP10154136A 2010-02-19 2010-02-19 Barreau de grille Withdrawn EP2362144A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP10154136A EP2362144A1 (fr) 2010-02-19 2010-02-19 Barreau de grille

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10154136A EP2362144A1 (fr) 2010-02-19 2010-02-19 Barreau de grille

Publications (1)

Publication Number Publication Date
EP2362144A1 true EP2362144A1 (fr) 2011-08-31

Family

ID=42561164

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10154136A Withdrawn EP2362144A1 (fr) 2010-02-19 2010-02-19 Barreau de grille

Country Status (1)

Country Link
EP (1) EP2362144A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200471741Y1 (ko) 2013-12-17 2014-03-11 용호금속(주) 소각로용 화격자 유닛
DE102014004660A1 (de) 2014-02-10 2015-08-13 Joachim Kümmel Verfahren zur Verbrennung von Abfall und Biomassen auf einem luftgekühlten Rost sowie Vorrichtung zur Durchführung des Verfahrens
DE102014008858A1 (de) 2014-06-16 2015-12-17 Joachim Kümmel Verfahren zur Verbrennung von Abfall und Biomassen auf einem Flossenwand-Stufenrost sowie Vorrichtung zur Durchführung des Verfahrens

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0757206A2 (fr) * 1995-08-02 1997-02-05 Asea Brown Boveri Ag Grille pour un foyer
DE19650742C1 (de) * 1996-12-06 1998-02-19 Metallgesellschaft Ag Mit Wasser gekühlter Verbrennungsrost
EP1103762A1 (fr) * 1999-11-27 2001-05-30 Rheinkalk GmbH & Co. KG Barreau de grille pour grille mobile
WO2002021049A1 (fr) * 2000-09-04 2002-03-14 Theodor Koch Barreau de grille a refroidissement par du liquide pour des incinerateurs

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0757206A2 (fr) * 1995-08-02 1997-02-05 Asea Brown Boveri Ag Grille pour un foyer
DE19650742C1 (de) * 1996-12-06 1998-02-19 Metallgesellschaft Ag Mit Wasser gekühlter Verbrennungsrost
EP1103762A1 (fr) * 1999-11-27 2001-05-30 Rheinkalk GmbH & Co. KG Barreau de grille pour grille mobile
WO2002021049A1 (fr) * 2000-09-04 2002-03-14 Theodor Koch Barreau de grille a refroidissement par du liquide pour des incinerateurs

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200471741Y1 (ko) 2013-12-17 2014-03-11 용호금속(주) 소각로용 화격자 유닛
DE102014004660A1 (de) 2014-02-10 2015-08-13 Joachim Kümmel Verfahren zur Verbrennung von Abfall und Biomassen auf einem luftgekühlten Rost sowie Vorrichtung zur Durchführung des Verfahrens
DE102014008858A1 (de) 2014-06-16 2015-12-17 Joachim Kümmel Verfahren zur Verbrennung von Abfall und Biomassen auf einem Flossenwand-Stufenrost sowie Vorrichtung zur Durchführung des Verfahrens

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