EP0499911B1 - Spanneinrichtung und Spannverfahren für Verbrennungsroste - Google Patents

Spanneinrichtung und Spannverfahren für Verbrennungsroste Download PDF

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Publication number
EP0499911B1
EP0499911B1 EP92102122A EP92102122A EP0499911B1 EP 0499911 B1 EP0499911 B1 EP 0499911B1 EP 92102122 A EP92102122 A EP 92102122A EP 92102122 A EP92102122 A EP 92102122A EP 0499911 B1 EP0499911 B1 EP 0499911B1
Authority
EP
European Patent Office
Prior art keywords
grating
grate
bars
row
rows
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.)
Expired - Lifetime
Application number
EP92102122A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0499911A3 (en
EP0499911A2 (de
Inventor
Friedrich Krieger
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.)
Noell Abfall- und Energietechnik GmbH
Original Assignee
Noell Abfall- und Energietechnik 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 Noell Abfall- und Energietechnik GmbH filed Critical Noell Abfall- und Energietechnik GmbH
Publication of EP0499911A2 publication Critical patent/EP0499911A2/de
Publication of EP0499911A3 publication Critical patent/EP0499911A3/de
Application granted granted Critical
Publication of EP0499911B1 publication Critical patent/EP0499911B1/de
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 grate for incinerators of waste incineration plants.
  • a particular problem is formed by the low-temperature non-ferrous metal waste flowing through such gaps between 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.
  • each block transverse row has been provided with a tensioning device which engages one of the two outermost grate bars of this transverse row and whose grate bars are resiliently pressed against one another. Because of the large number of parts to be moved during rough operation of the furnace at high temperatures, this spring construction is prone to failure, complex and uncontrollable.
  • BE-A-371 535 describes a grate for incinerators with arranged rows of laterally tensioned grate bars, in which hydraulic clamping devices for the grate bars are arranged on the side of the incinerator outside of a combustion chamber.
  • these grate bars are not arranged like roof tiles and are not guided in rows by a grate bar support.
  • Such a grate is described in EP-A-0 165 432, disc springs are arranged and a tie rod is provided for each grate bar row, which connects all grate bars together in a resilient manner.
  • the disc springs, on which very high compressive forces act, are a problem.
  • the disc springs must also pass through a large temperature range Apply the same spring forces to the thermal expansion of the grate bars and the tie rod in a variable pressure range. This is not guaranteed.
  • the springs and movable rod parts are exposed to the high combustion chamber temperatures and the inevitable incineration of combustion material. The voltage can only be changed when the grate has cooled; the same applies to their inspection and repair.
  • the invention is therefore based on the problem of tensioning the grate bars of each grate bar row in a controlled manner and adapting this tension depending on the furnace operating mode in such a way that no gaps arise between the individual grate bars and no counter-pressure forces are derived into the furnace wall.
  • waste incineration plants with rows of laterally braced grate bars arranged in a tile-like manner, which are guided in rows by a grate bar support, in particular alternating movable and fixed grate bar supports arranged one behind the other, hydraulic tensioning devices lying on the side of the incinerator, outside the combustion chamber are arranged for the grate bars and that For two or more consecutive, fixed grate bar supports with connected common counter pressure plates are provided for absorbing the reaction forces, which also absorb the clamping forces acting on the movable grate bar supports. As a result, the reaction forces occurring within the grate system remain bound and do not burden the furnace wall.
  • Each hydraulic tensioning device for each grate bar support should be controllable individually or together for several movable or fixed grate bar supports. Furthermore, two adjacent fixed grate bar supports can be acted upon by the hydraulic tensioning device via a connecting pressure plate.
  • the pressing forces can be determined by a measuring device, the measuring device indicating the pressing path in the simplest case.
  • the clamping devices for pressing the grate bars of each row of grate bars can also be cyclically loaded and relieved again. Fixed rows of grate bars can also be exposed to constant clamping pressure.
  • the movable grate bars are preferably pressed against one another during a standstill phase.
  • a hydraulic tensioning device With a hydraulic tensioning device, the pressure between the grate bars can be adjusted sensitively, thus avoiding an air slot between the grate bars, both when the grate is cold and when it is warm. The air is then only discharged through the air slots provided in the grate bars.
  • a particular advantage is that for everyone Grate bar row, as for each grate bar support, a separate pressing force can be set, which is kept constant by valves and pressure storage devices.
  • a hydraulic tensioning device is predestined for the application of high forces. It follows that even very wide furnaces with a large number of grate bars on each row of grate bars can be subjected to higher pressures than would be possible by mechanical means.
  • the rust side change possible due to the temperature expansion or other events i. H. the change in the total width of all grate bars arranged on a grate bar support can be observed at any time by, for. B. a displacement measuring device, which is arranged as a measuring pin with a scale on one side of the grate bar support and protrudes through the furnace wall. It can thus be determined whether, contrary to expectations, for example, molten non-ferrous metal or pieces of steel have gotten between the grate bars and this creates air slots, which inevitably leads to a change in the overall width of the grate, which can be read on the measuring pin.
  • the possibility according to the invention offers a particular advantage of reducing the pressing force between the movable grate bars during the grate stroke and thus preventing unnecessary wear between sliding pieces on both sides of the furnace.
  • this, also cyclically adjustable, variation of the pressing pressure gives the possibility of foreign bodies such as ash or accidentally getting between the grate bars Remove steel pieces from these gaps by alternately pressing and releasing the grate bars. Such a problem can always arise if the grate bar surfaces or parts of the side surfaces are already damaged after a long furnace journey.
  • the clamping system can optionally be designed differently using the inventive idea. From each furnace side, for example, a fixed and a movable row of grate bars can be acted upon by a fluid cylinder, or a hydraulic cylinder can act on two adjacent rows of grate bars from one oven side with the aid of a linkage leading to the opposite oven side.
  • One side of the furnace is designed as a fixed side.
  • the middle grate side is designed as a fixed side and the outer grate side as a loose side.
  • FIG. 1 shows a furnace 21, in the furnace wall 20 hydraulic cylinders 1, 2 are embedded, which are acted upon by hydraulic controls and hydraulic drives, not shown.
  • Movable grate bar rows 7 and fixed grate bar rows 6 lie on each row of grate bar supports 17 (FIG. 2) in the combustion chamber 21.
  • the combustion grate is designed as a feed grate, ie with each stroke the movable grate bar row 7, which lies like a roof tile over the fixed grate bar row 6, is pushed over the fixed grate bar row 6.
  • the firing material is pushed upwards.
  • the hydraulic cylinders 1, 2 act on plungers 3, 4, which are arranged in guide tubes 9.
  • Four adjacent guide tubes 9 are supported in a common grate bar support plate 10.
  • This shield absorbs the opposing forces of the four cylinders which act on the grate rod rows 6, 7 at the tips of the tappets 3, 4.
  • the fixed grate bar rows 6 are acted upon by a common adjustable side plates 5 through the plunger 3 with a variably adjustable pressure. Due to the intermittent arrangement of the grate side plates 5 under each tappet 3 on each fixed grate bar row 6, adjacent grate bar rows 6 can expand relative to one another at the same pressure.
  • the plunger 4 of the Hydraulic cylinders 2 pierce the grate side plate 5 and press on the movable grate bar rows 7 via sliders 8.
  • the pressure of the cylinders 2 is also variably adjustable. Between the slides 8 and the movable grate bar rows 7 there is pressure-dependent sliding friction with each stroke of the movable grate bar rows 7.
  • This system also makes it possible for each of the fixed grate bar rows 6 and each of the movable grate bar rows 7 to expand and contract differently, depending on the temperature, with the pressing pressure remaining the same.
  • Figure 2 shows according to section CC in Figure 1, the two outer loose sides of a grate.
  • the fixed side, not shown, of each row of grate bars 6, 7 is located in the middle of the furnace.
  • the movable row of grate bars 7, here on grate bar supports 17, and the stationary row of grate bars 6 are stretched between the grate bar plates 10, 16 guided by grate bar plates 10, 16.
  • the clamping device 2, which acts on the movable grate bar row 7 via the plunger 4 and the slider 8, is fastened in the furnace wall 20 in such a way that the operating side and the hydraulic control and the hydraulic drive sit outside the furnace 21 and the furnace wall 20.
  • a measuring pin 18 ends in the slider 8 and extends through both the grate bar support plate 10 and the grate side plate 5 and the furnace wall 20. Each expansion of the movable grate bar row 7 leads to a change in the length of the measuring pin 18, which, on a scale, not shown, outside the Oven atmosphere is readable. In an analogous manner, not shown, 6 measuring pins are also arranged in the movable grate bar rows, but these end there in the grate side plates 5 because the fixed grate bar rows 6 have no sliders 8.
  • FIG. 3 shows a firing grate in which each row of grate bars 6, 7 is acted upon on both sides by hydraulic cylinders 1, 2.
  • FIG. 4 shows hydraulic cylinders 23 which act in the middle between two rows of grate bars 6, 7 on a transverse linkage 22 connecting these rows.
  • FIG. 5 finally shows a firing grate in which a hydraulic cylinder 24 acts on both sides from an oven side on two adjacent movable and stationary grate bar rows 6, 7 by means of pressure beams 25, transverse linkage 26 and longitudinal linkage 27.

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)
EP92102122A 1991-02-18 1992-02-08 Spanneinrichtung und Spannverfahren für Verbrennungsroste Expired - Lifetime EP0499911B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4105331A DE4105331C1 (enrdf_load_stackoverflow) 1991-02-18 1991-02-18
DE4105331 1991-02-18

Publications (3)

Publication Number Publication Date
EP0499911A2 EP0499911A2 (de) 1992-08-26
EP0499911A3 EP0499911A3 (en) 1993-01-07
EP0499911B1 true EP0499911B1 (de) 1995-06-21

Family

ID=6425509

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92102122A Expired - Lifetime EP0499911B1 (de) 1991-02-18 1992-02-08 Spanneinrichtung und Spannverfahren für Verbrennungsroste

Country Status (5)

Country Link
US (1) US5178128A (enrdf_load_stackoverflow)
EP (1) EP0499911B1 (enrdf_load_stackoverflow)
KR (1) KR100200405B1 (enrdf_load_stackoverflow)
DE (2) DE4105331C1 (enrdf_load_stackoverflow)
ES (1) ES2074745T3 (enrdf_load_stackoverflow)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4119405C1 (enrdf_load_stackoverflow) * 1991-06-10 1993-04-08 Noell Abfall- Und Energietechnik Gmbh, 4040 Neuss, De
DE4320725A1 (de) * 1993-06-23 1995-01-05 Kloeckner Humboldt Deutz Ag Schubrostkühler zum Abkühlen von heißem Gut
EP0791784A1 (de) * 1996-01-25 1997-08-27 Oschatz Gmbh Verbrennungsrost
DE19606107C1 (de) * 1996-02-19 1997-02-13 Martin Umwelt & Energietech Feuerungsrost, insbesondere für Müllverbrennungsanlagen
EP1840463A1 (en) * 2006-03-27 2007-10-03 Babcock & Wilcox Voelund ApS Combustion grate spanning system
CN101078521B (zh) * 2006-05-24 2011-02-16 顾利平 一种炉排长销校正结构
CN101876442B (zh) * 2010-08-06 2012-03-07 无锡华光锅炉股份有限公司 炉排侧梁的安装结构
CN110940694A (zh) * 2019-09-20 2020-03-31 江苏宏大特种钢机械厂有限公司 一种带式焙烧机用篦条热膨胀测试系统及其测试方法
CN119436153B (zh) * 2024-12-04 2025-07-11 北京中科润宇环保科技股份有限公司 垃圾焚烧炉炉排间隙调整装置及调整方法

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE371535A (enrdf_load_stackoverflow) *
DE1265247B (de) * 1966-12-08 1968-04-04 Siemens Ag Zeitmultiplex-UEbertragungsverfahren fuer die UEbertragung einer Mehrzahl von binaeren Nachrichten in einem transparenten Kanal
FR1532280A (fr) * 1966-12-27 1968-07-12 Grille pour foyers de grandes dimensions avec cloisons latérales de séparation entre les nappes de grille
CH585372A5 (enrdf_load_stackoverflow) * 1975-03-17 1977-02-28 Von Roll Ag
DE2552475A1 (de) * 1975-11-22 1977-05-26 Sennheiser Electronic Hoer-sprech-garnitur fuer drahtlose und drahtgebundene versorgung individueller hoergeraete, gegensprechsystem infrarot/ultra-schall/induktion
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
US4328786A (en) * 1979-11-30 1982-05-11 Clayware Pty. Ltd. Coal burning grate
EP0165432B1 (de) * 1984-05-21 1989-05-10 KOCH, Theodor Ofen, insbesondere zur Verbrennung von Müll, Kohle, Holz und Industrieabfällen
IT1235900B (it) * 1985-10-11 1992-12-02 Vaifro Vittorio Bonomelli Griglia di combustione a gradini mobili per combustibili solidi in particolare rifiuti solidi urbani e assimilabili
DE3813441A1 (de) * 1987-04-25 1988-11-03 Mrklas Louis Roststabelement fuer eine schubrostfeuerung zur muellverbrennung

Also Published As

Publication number Publication date
EP0499911A3 (en) 1993-01-07
KR920016772A (ko) 1992-09-25
US5178128A (en) 1993-01-12
DE4105331C1 (enrdf_load_stackoverflow) 1992-04-16
ES2074745T3 (es) 1995-09-16
KR100200405B1 (ko) 1999-06-15
EP0499911A2 (de) 1992-08-26
DE59202572D1 (de) 1995-07-27

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