EP0790464A2 - Grille de combustion, de préférence pour incinérateurs de déchets - Google Patents

Grille de combustion, de préférence pour incinérateurs de déchets Download PDF

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Publication number
EP0790464A2
EP0790464A2 EP97100975A EP97100975A EP0790464A2 EP 0790464 A2 EP0790464 A2 EP 0790464A2 EP 97100975 A EP97100975 A EP 97100975A EP 97100975 A EP97100975 A EP 97100975A EP 0790464 A2 EP0790464 A2 EP 0790464A2
Authority
EP
European Patent Office
Prior art keywords
grate
piston
furnace
plate
side plate
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
Application number
EP97100975A
Other languages
German (de)
English (en)
Other versions
EP0790464A3 (fr
EP0790464B1 (fr
Inventor
Walter Josef Martin
Johannes Josef Edmund Martin
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.)
Martin GmbH fuer Umwelt und Energietechnik
Original Assignee
Martin GmbH fuer Umwelt und Energietechnik
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 Martin GmbH fuer Umwelt und Energietechnik filed Critical Martin GmbH fuer Umwelt und Energietechnik
Priority to SI9730185T priority Critical patent/SI0790464T1/xx
Publication of EP0790464A2 publication Critical patent/EP0790464A2/fr
Publication of EP0790464A3 publication Critical patent/EP0790464A3/fr
Application granted granted Critical
Publication of EP0790464B1 publication Critical patent/EP0790464B1/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

Definitions

  • the invention relates to a furnace grate, in particular for waste incineration plants, with partially overlapping rows of grate bars, the rows of grate bars being alternately fixed and movable in the longitudinal direction of the grate bars and the grate bar rows being delimited by grate side plates which are movably supported transversely to their longitudinal direction and by tensioning devices which are held in the furnace wall and are designed as piston-cylinder units against which rows of grate bars can be pressed.
  • a known firing grate of this type (DE-41 05 331 C1)
  • the grate side plates on grate bar signs ie special guides that are U-shaped, are guided at the upper and lower edges, the grate bar signs being fastened to the grate bar supports.
  • Hydraulic cylinders which are provided at the ends of the grate side plates, serve as tensioning devices, each hydraulic unit pressing on both ends of adjacent grate side plates.
  • the longitudinally immovable grate bars lie directly on the grate side plates, while for the grate bars movable in the longitudinal direction a slide is provided in the grate side plates, on which an additional hydraulic cylinder unit acts, which engages freely with its tappet through the grate side plate.
  • the object of the invention is to develop a grate according to the preamble of claim 1 so that largely trouble-free operation of the grate and the clamping devices including the grate side plates is ensured with relatively little design effort.
  • each grate side plate is firmly connected to a piston of the tensioning device and is supported and guided exclusively by this, that the tensioning device comprises a cylinder open to the combustion chamber and a hollow piston guided therein, which is loaded by a spring element supported against the cylinder base and is firmly connected with its piston head to the grate side plate and is sealed in the cylinder with its piston skirt.
  • This configuration makes it possible to dispense with the additional guides for the grate side plates which are necessary in the prior art, since the guiding and supporting tasks are carried out by the tensioning device itself, to which the grate side plate is in each case firmly connected. Tilting and jamming and the associated malfunctions of the grate operation are thus avoided. Since there are no additional guides for the grate side plates, the design effort is also reduced.
  • the piston shirt has the piston shirt so that the piston of the tensioning device can perform the guiding tasks particularly reliably a length that is greater than the cylinder depth.
  • a further measure according to the invention which is advantageous for good piston guidance and thus for a tilt-proof guidance of the grate side plate, consists in the fact that the diameter of the piston having a circular cross section is greater than half the height of the grate plate. Due to this large dimensioning of the cylinder and the piston of the clamping device, which is also the guide device for the grate side plate, safe guidance of the grate side plates, even in the event of malfunctions during grate operation, is ensured with little design effort, which is caused by the penetration of solid bodies between adjacent grate bars can.
  • adjacent pistons are connected to one another by guide rods, which engage with their free ends in an articulated manner on adjacent pistons.
  • These guide rods not only act as an anti-rotation device for pistons which are circular in cross section, but also serve to influence adjacent pistons of adjacent clamping devices in such a way that a certain entrainment of a piston takes place by the adjacent piston.
  • the articulated connection between the piston and the guide rod comprises a joint pin which is at right angles to the longitudinal axis of the piston and extends through the guide rod and is held in fixedly arranged pistons and the guide rod is held between holding tabs.
  • the grate side plates can be double-walled and comprise a support plate connected to the piston and a grate limiting plate made of high-temperature resistant material suspended thereon. the one that runs transversely to the longitudinal direction on its side facing the support plate Has support ribs.
  • the grate side plate can be made smaller than usual in its dimensions, since it is covered by the grate limiting plate, which can have correspondingly larger dimensions in height and, if appropriate, also in length.
  • the grate-limiting plate can preferably comprise a plurality of partial plates arranged with little play to one another in the longitudinal direction of the support plate, the total length of which corresponds to the length of the support plate.
  • a further advantageous embodiment of the invention consists in that the grate side plates or the grate limiting plates have at their upper edge a flange projecting in the direction of the furnace wall, which is covered with little play by a cover strip attached to the furnace wall. This provides some protection against the ingress of dust and coarse particles that could get behind the grate side panels without such a cover.
  • an elastically yielding sealing body held on the furnace wall can be inserted between the free edge of the flange of the grate side plate or the grate limiting plate and the furnace wall.
  • Such sealing bodies consist in a known manner of mineral materials which are correspondingly heat-resistant and have sufficient elasticity to be able to follow the movements of the grate side plate or the grate limiting plate in a sealing manner.
  • a further improvement of the seal is that a web extending in the longitudinal direction of the grate side plate or the support plate is arranged on the back of the grate and engages sealingly in a groove of the sealing body.
  • the side of the cover strip facing the flange can have a cavity formed by an upturning of the cover strip, so that a between the flange of the grate side plate or the grate limiting plate and the cover strip Type labyrinth seal with relaxation space for the penetrated air is formed so that the passage of dust between the upper edge of the grate side plate or the grate limiting plate and the cover strip is largely prevented and thus the sealing body is less burdened with dust.
  • the sealing body can perform its sealing function over a longer period of time.
  • the spring element can be adjustable in its pretension in a further development of the invention.
  • a furnace wall denoted by 1 has a recess 2 at the grate height, in which a plurality of clamping devices, denoted overall by 3, are arranged.
  • Each clamping device comprises a cylinder which is open towards the combustion chamber side 4, which is attached with its open edge flush to the bottom 5 of the recess 2, for example by a weld 6.
  • a hollow piston 7 is guided with its piston skirt 8 and sealed by a seal 9, so that no dust can penetrate into the interior of the cylinder 4.
  • the piston skirt 8 is longer than the cylinder depth, so that it is always safely guided with all stroke movements.
  • a support plate 12 is fixedly connected by screws 11, to which individual grate limiting plates 13 are suspended to protect them against heat, for which purpose the grate limiting plates 14 have ribs 15 with hanging grooves 16 in the region of their upper bent end.
  • the grate limiting plate 13 has at its upper edge a flange 17 directed towards the open wall, which presses with its free end 18 against an elastic sealing body 19 which is held by means of a holder 20 on the bottom 5 of the recess 2 of the furnace wall 1.
  • a cover strip 21 is also provided, which lies with an upward bend 22 over the flange 17 of the grate limiting plate 13 at a short distance, with the bend 22 creating a cavity 23 which is largely covered by the flange 17, so that a relaxation room is created like a labyrinth seal.
  • the grate side plate is thus formed by the support plate 12 and the grate limiting plate 13. In the event that these two parts are made in one piece, the one-piece grate side plate has the same outer shape as the grate limiting plate 13.
  • the grate-limiting plate 13 assigned to a support plate 12 can be mutually transverse to the support plate 12 Move the grate longitudinal direction due to the grate expansion or due to the action of the tensioning device 3.
  • a compression spring 26 is provided in the interior of the hollow piston 7, which is supported at one end on the piston crown 10 and at the other end on a thrust bearing 27, which in the form of an inside diameter of the hollow piston 7 in essentially adapted plate and sits at the end of an adjusting screw 28 which is screwed into a nut 30 attached to the cylinder base 29 and secured by a lock nut 31.
  • the adjusting screw 28 has at its end located outside the cylinder 4 a handle 32 in the form of a head with a through hole 33 into which a correspondingly thick rod can be inserted for rotating the adjusting screw 28 in order to be able to adjust the prestress of the compression spring 26.
  • the piston 7 is so far beyond the cylinder 4 that the grate limiting plates 13 are substantially flush with the furnace wall 1.
  • adjacent pistons 7 are connected in an articulated manner by guide rods 34.
  • retaining tabs 35 are fastened to the piston skirt 8 of each piston 7 on both sides of the same, for example by welding, which receive the respective guide rod 34 between them, a pivot pin 36 inserted through the retaining tabs 35 and the guide rod 34 producing the articulated connection.
  • Each support plate 12 is assigned a clamping device 3, through which the support plate is held and guided, the diameter of the piston 7 and the associated cylinder 4 being as large as possible in order to achieve good guidance, the piston diameter almost corresponding to the height of the support plate 12.
  • the large length of the piston skirt 8 also contributes to stable guidance of the piston and thus of the support plate 12.
  • Each support plate 12 can either be assigned to a row of grate bars or the support plates can also have a greater length so that they can overlap part of the subsequent row of grate bars or even several rows of grate bars. So that the support plates can withstand the pressures that occur, webs 37 are attached to the back of the same, for example by welding.
  • the grate-limiting plates 13 To increase the stability of the grate-limiting plates 13, they have ribs 38 on their rear side, which extend transversely to the longitudinal direction of the support plates, that is to say essentially in the vertical direction, thereby creating cavities 39 into which fresh air flows from below in the area of the gap formed by the recess 2 Cooling of the grate limitation plates or the support plate can penetrate. Due to the sealing body 19, this air coming from the underwind box cannot flow laterally around the grate. Since there is practically no dust pollution from the downwind box, the seal 9 provided is sufficient to prevent dust from entering the cylinder 4.
  • Figure 4 shows a variant in the sealing between the grate limiting plates and the furnace wall.
  • the modification is that the sealing body 19 'has a greater height and is provided with a groove 40 into which an elongated web 37' penetrates in order to achieve an additional seal.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Incineration Of Waste (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Processing Of Solid Wastes (AREA)
  • Fertilizers (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Gasification And Melting Of Waste (AREA)
  • Paper (AREA)
EP97100975A 1996-02-19 1997-01-22 Grille de combustion, de préférence pour incinérateurs de déchets Expired - Lifetime EP0790464B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI9730185T SI0790464T1 (en) 1996-02-19 1997-01-22 Combustion grate, especially for waste incinerators

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19606107 1996-02-19
DE19606107A DE19606107C1 (de) 1996-02-19 1996-02-19 Feuerungsrost, insbesondere für Müllverbrennungsanlagen

Publications (3)

Publication Number Publication Date
EP0790464A2 true EP0790464A2 (fr) 1997-08-20
EP0790464A3 EP0790464A3 (fr) 1997-11-26
EP0790464B1 EP0790464B1 (fr) 2001-06-06

Family

ID=7785800

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97100975A Expired - Lifetime EP0790464B1 (fr) 1996-02-19 1997-01-22 Grille de combustion, de préférence pour incinérateurs de déchets

Country Status (18)

Country Link
US (1) US5722334A (fr)
EP (1) EP0790464B1 (fr)
JP (2) JP2948769B2 (fr)
AT (1) ATE201926T1 (fr)
BR (1) BR9701004A (fr)
CA (1) CA2197741C (fr)
CZ (1) CZ292636B6 (fr)
DE (2) DE19606107C1 (fr)
DK (1) DK0790464T3 (fr)
ES (1) ES2159780T3 (fr)
NO (1) NO308712B1 (fr)
PL (1) PL182698B1 (fr)
PT (1) PT790464E (fr)
RU (1) RU2116572C1 (fr)
SG (1) SG52919A1 (fr)
SI (1) SI0790464T1 (fr)
TW (1) TW316287B (fr)
UA (1) UA29508C2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109060352A (zh) * 2018-10-22 2018-12-21 浙江国际海运职业技术学院 轴系的轴承负荷测试工艺

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7766013B2 (en) * 2001-06-05 2010-08-03 Alexza Pharmaceuticals, Inc. Aerosol generating method and device
GB2413473B (en) * 2005-02-17 2006-05-10 Wildbird J C Foods Ltd Bird feeder port
JP5087221B2 (ja) * 2005-12-06 2012-12-05 株式会社荏原製作所 ストーカ式燃焼装置
WO2007090183A2 (fr) 2006-02-01 2007-08-09 Johnsondiversey, Inc. Dispositif et procede de couplage d'accessoire de nettoyage a une machine de nettoyage de sol
CN101078521B (zh) * 2006-05-24 2011-02-16 顾利平 一种炉排长销校正结构
CH701280B1 (de) * 2007-08-22 2010-12-31 Doikos Investments Ltd Flüssigkeitsgekühlte Rostplatte mit Verschleissplatten und aus solchen Rostplatten bestehender Stufenrost.
KR101175294B1 (ko) * 2012-03-02 2012-08-20 이승우 폐기물 소각장치용 화격자 간격유지장치
KR101230383B1 (ko) * 2012-06-20 2013-02-12 지이큐솔루션 주식회사 측면 수냉각을 통해 수냉식 화격자 상의 클링커를 억제하는 스토커 소각로

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4105331C1 (fr) 1991-02-18 1992-04-16 Noell - K + K Abfalltechnik Gmbh, 4040 Neuss, De

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE371535A (fr) *
US1565017A (en) * 1924-06-14 1925-12-08 Locomotive Stoker Co Resilient trough support
US2356144A (en) * 1942-03-09 1944-08-22 Detroit Stoker Co Traveling grate for stokers
US4328786A (en) * 1979-11-30 1982-05-11 Clayware Pty. Ltd. Coal burning grate
US4418816A (en) * 1981-10-19 1983-12-06 Lev Kropp Inertial conveyor
FR2661235B1 (fr) * 1990-04-23 1992-07-31 Traitement Indl Residus Urbains Poutre formant joint de dilatation entre deux nappes de grilles de foyer accolees, avec des barreaux alternativement fixes et mobiles.
US5377663A (en) * 1993-06-07 1995-01-03 Wheelabrator Environmental Systems, Inc. Grate combustion system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4105331C1 (fr) 1991-02-18 1992-04-16 Noell - K + K Abfalltechnik Gmbh, 4040 Neuss, De

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109060352A (zh) * 2018-10-22 2018-12-21 浙江国际海运职业技术学院 轴系的轴承负荷测试工艺
CN109060352B (zh) * 2018-10-22 2020-01-07 浙江国际海运职业技术学院 轴系的轴承负荷测试方法

Also Published As

Publication number Publication date
NO970720L (no) 1997-08-20
DE59703704D1 (de) 2001-07-12
CZ48797A3 (en) 1997-09-17
PT790464E (pt) 2001-11-30
DE19606107C1 (de) 1997-02-13
PL182698B1 (pl) 2002-02-28
BR9701004A (pt) 1998-10-27
SI0790464T1 (en) 2001-12-31
SG52919A1 (en) 1998-09-28
JPH11218319A (ja) 1999-08-10
CA2197741C (fr) 2000-05-30
CA2197741A1 (fr) 1997-08-20
EP0790464A3 (fr) 1997-11-26
JP2948769B2 (ja) 1999-09-13
EP0790464B1 (fr) 2001-06-06
US5722334A (en) 1998-03-03
JP3103066B2 (ja) 2000-10-23
ES2159780T3 (es) 2001-10-16
JPH09318033A (ja) 1997-12-12
DK0790464T3 (da) 2001-09-17
CZ292636B6 (cs) 2003-11-12
ATE201926T1 (de) 2001-06-15
NO308712B1 (no) 2000-10-16
UA29508C2 (uk) 2000-11-15
RU2116572C1 (ru) 1998-07-27
PL318519A1 (en) 1997-09-01
TW316287B (fr) 1997-09-21
NO970720D0 (no) 1997-02-17

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