EP1744101A2 - Admission de liquide de refroidissement avec cylindre pour barreau de grille - Google Patents

Admission de liquide de refroidissement avec cylindre pour barreau de grille Download PDF

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Publication number
EP1744101A2
EP1744101A2 EP06014669A EP06014669A EP1744101A2 EP 1744101 A2 EP1744101 A2 EP 1744101A2 EP 06014669 A EP06014669 A EP 06014669A EP 06014669 A EP06014669 A EP 06014669A EP 1744101 A2 EP1744101 A2 EP 1744101A2
Authority
EP
European Patent Office
Prior art keywords
grate
feed
grate according
feed grate
cooling fluid
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Withdrawn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
EP06014669A
Other languages
German (de)
English (en)
Other versions
EP1744101A3 (fr
Inventor
Holger Kleen
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.)
Mitsubishi Power Europe GmbH
Original Assignee
LLS Standardkessel Service 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 LLS Standardkessel Service GmbH filed Critical LLS Standardkessel Service GmbH
Publication of EP1744101A2 publication Critical patent/EP1744101A2/fr
Publication of EP1744101A3 publication Critical patent/EP1744101A3/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Withdrawn legal-status Critical Current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
    • 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
    • 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
    • F23H2900/00—Special features of combustion grates
    • F23H2900/03021—Liquid cooled grates

Definitions

  • the present invention relates to a feed grate for combustion plants, which has cooled with a liquid cooling medium and for generating a feed movement back and forth movable grate bars, wherein at least one movable tube rodméfluidzutube protest is connected.
  • Such feed grates usually comprise a plurality of rows of grates consisting of a multiplicity of grate bars arranged parallel next to one another, which are arranged one behind the other and one above the other in a stepwise or roof tile-like manner.
  • a stationary and a forward and backward movable row of grates are usually provided in alternation.
  • the forward and backward movement of the movable grate rows causes the material to be burned to be advanced along the feed grate during the combustion process.
  • the fuel bed is stoked, which increases the efficiency of the combustion process.
  • the grate bars are cooled with a cooling medium.
  • liquid or gaseous fluids may be used, such as water or air.
  • air cooling air is passed between the grate bars, which serves both to cool the grate bars and to provide the primary air required for combustion.
  • a problem with the air cooling can arise when an optimal in relation to the combustion primary air volume flow is not sufficient for cooling the grate bars. In this case, the air flow must be increased in order to prevent wear of the grate bars, but at the same time adversely affects the combustion process. Such a mutual dependence of cooling air and primary air supply is correspondingly unfavorable. In the case of water cooling, however, the problem described above does not exist.
  • the cooling of the grate bars is carried out essentially by the guided through the grate bars cooling water, so that the guided between the grate bars primary air exerts no cooling function.
  • the cooling water and primary air supply are thus independent of each other and can be optimally adjusted according to their respective tasks, without negatively affecting the combustion process.
  • adefluidzumolus For cooling a movable grate bar with the aid of a liquid cooling medium, adefluidzumoltechnisch is usually connected to this.
  • thisdefluidzumoltechnisch can be passed according to a liquid cooling fluid to the grate bar, which then flows, for example, provided in the grate bar cooling channels, wherein a heat exchange between the grate bar and the cooling medium takes place.
  • a plurality of movable grate bars of a movable row of grates or even a plurality of movable grate rows can be fluidly connected to one another such that their cooling takes place with the aid of a singledefluidzuschreibtechnisch.
  • It can also be provided severaldefluidzuschreibschreiben, each supplying one or more Rostäbe or grate rows with the liquid cooling medium.
  • the correspondingdefluidzu113 To compensate for the forward and backward movement of the movable grate bars, it is known that the correspondingdefluidzu113 apparently has an elastic hose section, which can understand the movements of the grate bars.
  • This can be, for example, a plastic hose protected by a metal sheath, a less flexible metal hose or the like.
  • a tube section In addition to the flexibility to compensate for the movement of the grate bars, such a tube section must also have high heat resistance and dirt resistance, since it is used in a temperature and dirt-loaded area, which seems to preclude each other.
  • the cooling medium temperature of flexible metal hoses is limited to approx. ⁇ 100 ° C. For cylinders, the temperature and pressure can be increased significantly, which improves the heat utilization of the cooling medium.
  • the present invention provides a feed grate for combustion plants, which has a cooling by cooling fluid and for generating a feed movement movable back and forth grate bars, wherein at least one movable grate bardefluidzuschreibtechnisch is connected.
  • thedefiuidzu113 liber on a variable in length cooling fluid cylinder to compensate for the back and forth movement of the at least one tube rod, which replaces the known flexible hose portion of thedefluidzuschreibtechnisch.
  • the cooling fluid cylinder can be made of a material that is better for use in the temperature and compared to a flexible hose section dirt-loaded area below the underwinding area of the furnace is suitable because the use of a flexible material is not required for the cooling fluid cylinder.
  • the use of an extendable cooling fluid cylinder is also advantageous in that the associated with a leakage of the cooling fluid cylinder seal cooling fluid loss is only slightly, so that even with a damaged component always sufficient cooling of the feed grate can be guaranteed.
  • a plurality of movable grate bars or whole movable grate bar rows may be supplied with a liquid cooling medium via a single cooling fluid supply line by fluidly interconnecting the grate bars or rows of grates, whether parallel or in series.
  • severaldefluidzushell Kochen can be provided on different movable grate bars or movable grate rows to cool them accordingly. Each of thesedefluidzuschreibtechnischen is then provided to compensate for the movement with an extendable cooling fluid cylinder.
  • the stationary grate bars or grate bar rows are also supplied with liquid cooling medium via corresponding cooling fluid supply lines. But it should not be discussed in more detail, because according to the present invention, the compensation of the movement of the movable grate bars or grate bar rows is in the foreground.
  • the grate bars are step-like and each alternately fixed and arranged movable back and forth to ensure in this way a proper transport of the material to be burned through the furnace.
  • the grate bars preferably have meander-shaped cooling fluid channels, which are advantageously pipelines cast into the grate bars.
  • grate bar also includes grate blocks or grate rows that have no rod shape.
  • FIG. 1 is a perspective schematic diagram showing the operation of the feed grate invention. Shown are three grate bars 10, 12 and 14, which are arranged one behind the other and stepwise or roof tile superimposed. In the grate bars 10 and 14 are fixed grate bars, whereas the grate bar 12 can be moved back and forth, which is described in more detail with reference to Figures 2 and 3. Each of the grate bars 10, 12 and 14 has recess 16. The left recesses 16 of the grate bars 10, 12 and 14 shown in FIG. 1 are each in engagement with holding tubes of a holding structure of the feed grate, only one holding tube 18 of the grate bar holding structure 10 being shown in FIG. In this way, the grate blocks 10, 12 and 14 can be laid in a simple manner roof tiles on the holding device.
  • cooling fluid channels are provided through which a liquid cooling fluid can be passed to cool the grate bars.
  • the respective cooling fluid channels of the grate bars 10, 12 and 14 defluidzu 1900technischen 20, 22 and 24 are connected in the form of rigid pipes.
  • Thedefluidzu1700technisch 22 of the movable grate bar 12 comprises, in contrast to thedefluidzu2009 Gustaven 20 and 24 of the stationary grate bars 10 and 14 an intermediate, variable in length cooling fluid cylinder 26, which serves to compensate for the movement of the movable grate bar 12, which is explained in more detail below.
  • the cooling fluid cylinder 26 comprises two telescopically guided tubes 28 and 30, which are sealed against each other by means of a seal, not shown in Fig. 1.
  • the tube 28 of the Cooling fluid cylinder 26 is fixedly positioned by means of a fastening device 32, not shown, whereas the tube 30 of the cooling fluid cylinder 26 in the tube 28 can move freely back and forth to nachvoli convinced the movement of the grate bar 12.
  • Figure 2 shows the arrangement shown in Figure 1 in a second position in which the movable grate bar 12 has been moved from the rear end position shown in Figure 1 in the direction of arrow 34 by a distance d 1 by means of a feed drive, not shown.
  • the movement of the movable grate bar 12 is compensated by extending the tube 30 from the tube 28 of theharidzyfinders 26 by the distance d 1 .
  • Figure 3 shows the arrangement shown in Figures 1 and 2 in a front end position in which the movable grate bar is moved forward by the distance d 2, this forward movement is compensated again by extending the cooling fluid cylinder 26 by the distance d 2 .
  • the grate bar 12 can be moved back into the position shown in Figures 1, wherein this movement is compensated by retraction of the tube 30 in the stationarily positioned tube 28 of the cooling fluid cylinder 26.
  • FIG. 4 is a sectional detail view of that shown in FIGS.
  • the cooling fluid cylinder 26 includes two telescopically guided tubes 28 and 30.
  • a substantially annular spacer 36, an annular seal 38 and a Sliding bush 40 is arranged, wherein the sliding bush is supported against a provided on the inner circumference of the tube 28 paragraph 42.
  • the spacer 36 serves to position the tube 28 and the tube 30 at a predetermined distance from one another such that the seal 38 and the slide bushing 40 can be inserted between the two tubes.
  • the seal 38 seals the two tubes 28 and 30 fluid-tight against each other.
  • the sliding bushing 40 allows a smooth retraction and extension of the tube 30 in and out of the tube 28.
  • the spacer 36, the seal 38 and the sliding bushing 40 are made of temperature-resistant materials produced.
  • At the free ends of the tubes 28 and 30 of the cooling fluid cylinder 26 holding elements 44 and 46 are provided to secure the cooling fluid cylinder 26 to a support structure, not shown.
  • Fig. 5 is a perspective view of the cooling fluid cylinder 26 shown in Fig. 4.
  • the holding member 44 at the free end of the tube 28 comprises two outwardly projecting, opposing cylindrical projections 48 and 50 which are insertable into corresponding cylindrical receptacles of a support structure, that the cooling fluid cylinder 26 is pivotally held about the projections 48 and 50.
  • the retainer 44 also includes two outwardly projecting, opposing cylindrical projections 52 and 54 which are positionable in respective guide grooves or guide rails of the support structure so that the tube 30 is guided into and out of the tube 28 during extension and retraction ,
  • the use of a cooling fluid cylinder 26 has the advantage over the use of hose sections that materials can be used for the cooling fluid cylinder 26 which can better withstand the temperature and contamination stresses below the feed grate since the material used for the cooling fluid cylinder 26 has no elastic properties got to.
  • FIGS. 1 to 3 serves merely to describe the basic mode of operation of the feed grate according to the invention for furnaces and is accordingly not restrictive. Rather, modifications are possible without departing from the scope of the present invention, which is defined by the appended claims.

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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)
  • Apparatuses For Bulk Treatment Of Fruits And Vegetables And Apparatuses For Preparing Feeds (AREA)
EP06014669A 2005-07-16 2006-07-14 Admission de liquide de refroidissement avec cylindre pour barreau de grille Withdrawn EP1744101A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200520011215 DE202005011215U1 (de) 2005-07-16 2005-07-16 Vorschubrost für Feuerungsanlagen

Publications (2)

Publication Number Publication Date
EP1744101A2 true EP1744101A2 (fr) 2007-01-17
EP1744101A3 EP1744101A3 (fr) 2012-03-28

Family

ID=35070945

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06014669A Withdrawn EP1744101A3 (fr) 2005-07-16 2006-07-14 Admission de liquide de refroidissement avec cylindre pour barreau de grille

Country Status (2)

Country Link
EP (1) EP1744101A3 (fr)
DE (1) DE202005011215U1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1983261A1 (fr) 2007-04-20 2008-10-22 Ernst Schenkel Compensateur de mouvement
RU2377469C1 (ru) * 2007-03-29 2009-12-27 ТиссенКрупп Ксервон Енержи ГмбХ Переталкивающая колосниковая решетка для топок
KR101215075B1 (ko) 2012-06-20 2012-12-24 지이큐솔루션 주식회사 수냉식 화격자용 스토커 및 이를 구비한 소각로

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0915294A1 (fr) 1997-11-07 1999-05-12 Noell-KRC Energie- und Umwelttechnik GmbH Grille de combustion refroidie à l'eau
EP0989364A1 (fr) 1998-09-24 2000-03-29 Von Roll Umwelttechnik AG Elément de grille et procédé de refroidissement de ce dernier

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE94823C (fr) *
JPH11504700A (ja) * 1995-03-23 1999-04-27 コッホ，テオドール 燃焼炉の火格子
DE59800483D1 (de) * 1998-09-24 2001-03-29 Von Roll Umwelttechnik Ag Rostblock
JP2000146141A (ja) * 1998-11-06 2000-05-26 Hitachi Zosen Corp ストーカ式ごみ焼却炉の火格子の冷却構造
JP2002349833A (ja) * 2001-05-25 2002-12-04 Kubota Corp 火格子冷却機構

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0915294A1 (fr) 1997-11-07 1999-05-12 Noell-KRC Energie- und Umwelttechnik GmbH Grille de combustion refroidie à l'eau
EP0989364A1 (fr) 1998-09-24 2000-03-29 Von Roll Umwelttechnik AG Elément de grille et procédé de refroidissement de ce dernier

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2377469C1 (ru) * 2007-03-29 2009-12-27 ТиссенКрупп Ксервон Енержи ГмбХ Переталкивающая колосниковая решетка для топок
EP1983261A1 (fr) 2007-04-20 2008-10-22 Ernst Schenkel Compensateur de mouvement
JP2008267796A (ja) * 2007-04-20 2008-11-06 Schenkel Ernst 可動調整装置
KR101215075B1 (ko) 2012-06-20 2012-12-24 지이큐솔루션 주식회사 수냉식 화격자용 스토커 및 이를 구비한 소각로

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Publication number Publication date
DE202005011215U1 (de) 2005-09-29
EP1744101A3 (fr) 2012-03-28

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