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EP2433051A2 - Dispositif d'ajustement du tourbillonnement pour un brûleur - Google Patents

Dispositif d'ajustement du tourbillonnement pour un brûleur

Info

Publication number
EP2433051A2
EP2433051A2 EP10721098A EP10721098A EP2433051A2 EP 2433051 A2 EP2433051 A2 EP 2433051A2 EP 10721098 A EP10721098 A EP 10721098A EP 10721098 A EP10721098 A EP 10721098A EP 2433051 A2 EP2433051 A2 EP 2433051A2
Authority
EP
European Patent Office
Prior art keywords
slats
burner
adjusting
primary air
axis
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Withdrawn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
EP10721098A
Other languages
German (de)
English (en)
Inventor
Heinz Lederer
Thomas FÜLLERER
Stephanie Witzmann
Alexander Lederer
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.)
Unitherm Cemcon Feuerungsanlagen GmbH
Original Assignee
Unitherm Cemcon Feuerungsanlagen 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 Unitherm Cemcon Feuerungsanlagen GmbH filed Critical Unitherm Cemcon Feuerungsanlagen GmbH
Publication of EP2433051A2 publication Critical patent/EP2433051A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C7/00—Combustion apparatus characterised by arrangements for air supply
    • F23C7/002—Combustion apparatus characterised by arrangements for air supply the air being submitted to a rotary or spinning motion
    • F23C7/004—Combustion apparatus characterised by arrangements for air supply the air being submitted to a rotary or spinning motion using vanes
    • F23C7/006—Combustion apparatus characterised by arrangements for air supply the air being submitted to a rotary or spinning motion using vanes adjustable
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C7/00—Combustion apparatus characterised by arrangements for air supply
    • F23C7/008—Flow control devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D1/00—Burners for combustion of pulverulent fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
    • F23D11/36—Details, e.g. burner cooling means, noise reduction means
    • F23D11/38—Nozzles; Cleaning devices therefor
    • F23D11/383—Nozzles; Cleaning devices therefor with swirl means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/20—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone
    • F23D14/22—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other
    • F23D14/24—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other at least one of the fluids being submitted to a swirling motion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/48—Nozzles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D17/00—Burners for combustion conjointly or alternatively of gaseous or liquid or pulverulent fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
    • F23D2900/01001—Pulverised solid fuel burner with means for swirling the fuel-air mixture
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
    • F23D2900/14—Special features of gas burners
    • F23D2900/14241—Post-mixing with swirling means

Definitions

  • the invention relates to a device for adjusting the outflow direction, in particular a swirl, of air and / or fuel gases in a burner for the combustion of pulverulent or fine-grained, liquid and / or gaseous fuels, in particular for rotary kilns, with at least one primary air duct and at least one combustion nozzle.
  • the invention further relates to a burner for the combustion of pulverulent or fine-grained, liquid and / or gaseous fuels, in particular for rotary kilns, with at least one primary air duct and at least one firing nozzle.
  • DD-PS 132 022 From DD-PS 132 022 a burner has become known in which the air guide system is rigidly installed. Depending on the predefined arrangement, which can not be adjusted during operation, an angle of attack of up to 80 ° can be specified, which, however, can not be changed during operation.
  • EP 132 831 A1 discloses an injector burner in which flexible tubes are used. With such a design, the corrugated surface of the flexible tubes, which are formed as a ring shaft tube, exploited in order to achieve a better mixing. Such a hose can be installed in a bent position, whereby the turbulence can be amplified. A change in the angle of attack is not provided in the operation in this training and not possible.
  • the primary air duct contains a plurality of flexible tubes whose ends facing away from the burner nozzle are rotatable concentrically to the axis of the burner and / or slidably mounted in the axial direction of the burner and their ends facing the burner nozzle are mounted displaceably and / or pivotally in the axial direction of the burner.
  • a coaxial, annular air flow is divided into partial flows, wherein the axial partial air flows can be continuously set in a desired rotation, whereby the plunger shape can be influenced in a suitable manner.
  • the invention therefore aims to further improve the adjustability of the outflow direction to allow even better control and adjustment of the flame shape.
  • the setting of a divergent or convergent flow is to be made possible.
  • the device according to the invention substantially consists in that the primary air channel has at least one plurality of parallel lamellae comprehensive lamella packet, wherein the lamellae are rotatable relative to each other about a common axis and / or mounted against each other and in the basic position at least a first group with each other have aligned recesses, which together form a channel, wherein the channel in relation to the basic position successively rotated or shifted slats one from the basic position deviating, in particular inclined and / or curved, in particular helical course has, and that an adjusting device is provided for rotating or moving the slats.
  • the primary air flow is split into a plurality of partial air streams, wherein a channel is provided for each partial air flow, which is provided by a plurality of successively arranged outlets. is formed recesses of the parallel lamellae of the disk set.
  • a channel is provided for each partial air flow, which is provided by a plurality of successively arranged outlets.
  • any fine adjustment is possible if the individual slats can assume any adjustment positions.
  • a rotation of the individual slats such that each slat is rotated starting from the basic position to a larger angle compared to the previous slat of a disk set around a common axis of rotation, a curved course formed in the disk pack channels to each end of the channels in simple manner possible, since in contrast to the prior art no straight end sections remain. Due to the curved course of the channels results in a twisting of the current.
  • both the spin and the divergence / convergence of the current can be set.
  • the adjusting device according to the invention is extremely space-saving and it can be arranged a plurality of partial air flows in the intended Primär Kunststoffgueruß. Characterized in that the individual channels for the primary air streams do not require their own structural facilities, if the lamellae have a plurality of corresponding recesses to form the channels, a particularly space-saving arrangement, so that even with small outer dimensions of the primary air duct enough channels are used for the twist setting can. Almost any arrangement of the channels within the primary air cross-section can be made, whereby the requirement of the highest possible flexibility is taken into account.
  • the lamellae have a plurality of groups of recesses which are in each case aligned with one another in the basic position and jointly form a channel in each case, wherein the channels are preferably uniformly distributed in the circumferential direction.
  • Another advantage of the invention is the improved cooling of the primary air channel due to the lamellae. This is the case in particular if, as is the case with a preferred development, the recesses of grooves are formed on the outer circumference of the lamellae.
  • the individual channels formed in the disk pack are thereby limited by the mentioned grooves and the outer jacket of the primary air channel. As a result, the partial air streams flowing in the individual channels come into contact with the outer jacket, as a result of which improved cooling is achieved.
  • a particularly efficient air flow, combined with an effective swirl adjustment, is achieved in accordance with a preferred development in that the primary air duct has an annular cross-section and the blades essentially complete completely. Due to the fact that the lamellae substantially completely fill the annular cross section of the primary air channel, there remains no residual cross section for primary air, which would not be influenced in the sense of a swirl setting.
  • each channel must be formed in a separate disc pack.
  • a plurality of disk packs is provided, each having at least one channel.
  • the disk packs are advantageously distributed around the axis of the burner.
  • a further improvement of the flow behavior is achieved according to a further preferred embodiment in that the lamellae of the disk pack abut each other. As a result, a uniform flow is achieved in the channels formed in the disk set and in particular prevents the occurrence of turbulence.
  • an adjusting device for rotating or moving the slats includes Actuating device thereby at least one of the slats passing through, preferably extending outside the axis of rotation of the slats, pivotable control rod.
  • the adjusting rod can be fixed at one end, so that the pivoting of the pivotable free end of the adjusting rod causes the lamellae penetrated by the adjusting rod to rotate differently depending on the respective distance of the individual blades from the pivot point of the actuating rod forming fixed end or be moved so that the channels formed in the disk set can be changed from an axis-parallel course to a corresponding inclined or curved, eg helical course.
  • the training is in this case made such that one end of the control rod in a bearing on a burner-fixed component, in particular the sealing plate, and the other end of the control rod cooperates with a first adjusting ring or is held therein.
  • the adjusting ring is rotatably mounted about the axis of rotation of the slats.
  • a rotary drive may, for example, comprise a toothed sleeve whose toothing meshes with a drive pinion or is driven via a link.
  • At least one end, preferably the collar-side end, of the adjusting rod is displaceably mounted in a guide in the longitudinal direction.
  • the control rod In order to translate the adjustment of the control rod in a simple manner in a rotational movement of the slats, it is advantageously provided that the control rod penetrates openings, in particular slots of the slats, the longitudinal dimension corresponds in the radial direction of the slats at least twice the diameter of the control rod.
  • the swirl characteristic of the burner depends, inter alia, on the curvature of the channels formed in the disk pack as a function of the setting rod pivoting.
  • the swirl adjustment device can be preconfigured for example for the purpose of forming helically extending channels or for forming a course of the channels deviating from the helical shape.
  • the kinematics of the swirl adjustment device can be changed, for example, by the control rod engaging at different radial distances from the axis of rotation of the slats on the respective slats, so that different ratios prevail on each slat.
  • This can be realized in a structurally particularly simple manner in that the rod is inclined in the basic position of the slats to the axis of rotation of the slats, wherein the distance between the rod and the axis of rotation of the slats decreases from the burner fixed end of the rod towards the pivotal end ,
  • the actuating element preferably engages on the rotatably mounted, first adjusting ring for rotating the blades.
  • an angle lever For radial displacement of the collar side end of the control rod an angle lever is provided with advantage.
  • the angle lever can be designed and arranged such that with this an axial actuating direction is translated into the radial displacement of the collar-side end of the control rod.
  • the angle lever engages a second adjusting ring, which is displaceable in the axial direction.
  • the actuating element for the radial displacement of the slats in particular the angle lever, should be included in the rotation of the slats. be led.
  • the training is preferably made for this purpose such that the actuating element for rotating the first adjusting ring has at least one driver for the second adjusting ring.
  • the driver can be simultaneously formed as an axial guide for the second adjusting ring.
  • the invention provides that the disk set is formed by a block of deformable material, in particular rubber.
  • the twist can be adjusted by turning the side of the block facing the mouth of the burner relative to the side of the burner facing away from the burner.
  • the same or similar drives as in the variant with the lamellar package can be used.
  • FIG. 2 shows a cross-section along the line H-II of FIG. 1
  • FIG. 3 shows a view of the swirl adjusting device in a swirl position partly in section
  • FIG 4 shows a cross-section along the line IV-IV of Figure 3
  • Figure 5 shows a modified embodiment in section, in which an adjustment of the divergence / convergence of the flow can be made
  • Fig. 6 is a cross section along the line VI-VI of Fig. 5
  • Fig. 7 is a longitudinal section according to the line VII-VII of Fig. 6
  • Fig. 8 is a section along the line VIII-VIII of Fig. 5 in a basic position of the slats
  • Fig. 9 is a view according to FIG. 8 in an adjusted position of the slats.
  • the flexible swirl adjusting device is located in a circular primary air channel 1 at a distance from a burner exhaust nozzle 2.
  • the primary air duct 1 is bounded by the outer shell 3 of the burner and a cylindrical wall 4. Within the primary air duct 1 there are further channels 5, 6 and 7 for fuel.
  • the arranged in the primary air duct 1 Dralleinstellvorraum consists of a disk pack 8, which is composed of a plurality of fins 9.
  • the lamellae 9 have regularly distributed over the circumference recesses 10, which are aligned in the basic position of the Dralleinstellvortechnik shown in Fig.l and 2, so that there is a straight, parallel to the axis 11 of the burner 12 channels.
  • the burner nozzle 2 facing end is pivotally mounted in a sealing plate 14, wherein the sealing plate 14 in the primary air duct 1, and in particular on the cylindrical tube 4, is fixed.
  • the control rod 13 is fixed to a rotatably mounted about the axis 11 collar 15.
  • the adjusting ring 15 has a gear 16, with which the pinion 17 meshes a rotary drive, not shown.
  • the control rod 13 is fixed via a pivot bearing 18 on the adjusting ring 15.
  • the pivot bearing 18 is slidably guided in a running in the direction of the axis 11 guide 19 on the adjusting ring 15.
  • a modified embodiment is shown, which simultaneously allows the adjustment of the swirl and the convergence / divergence of the flow. It is in contrast to the embodiment according to FIGS. 1-4 not a single disc pack 8 is provided in which all channels 12 are formed, but a plurality of disc packs 8, in each of which a channel 12 is formed (Fig. 6).
  • the distributed in the circumferential direction disc packs 8 is associated with a collar 25.
  • the individual slats of the disk packs 8 are each held by means of two locking rods passing through the slats 13, one end of which is pivotally held in the sealing plate 14 and the other end of a slot 23 of the adjusting ring 25 passes.
  • an angle lever 26 is provided, the axis of rotation of which is formed by a bolt 27 and whose legs are designated by 28 and 29.
  • the leg 28 carries at its free end a bolt 30 which has two openings in which the two adjusting rods 13 are received and guided.
  • the leg 29 has at its free end a bolt 31 which is guided in a fixed to a collar 33 slide 32.
  • an actuating element 34 cooperates, which can be moved in the axial direction.
  • An axial adjustment of the actuating element 34 causes a VerSchwenkung the angle lever 26, as indicated by dashed lines, and a substantially radial displacement of the collar side end of the control rod 13, so that the adjusting rods 13 are pivoted radially outward or inward accordingly and the Take slats of the disk pack 8 according to the double arrow 24.
  • the twist setting is due to a rotation of the adjusting ring 25.
  • a collar 35 is provided which is connected to the adjusting ring 25 via threaded rods 36.
  • a plurality of threaded rods 36 is provided.
  • the rotation of the adjusting ring 35 corresponding to the double arrow 22 takes place via the actuating element 37.
  • the adjusting ring 25 takes with it the rotation of the elongated holes 23 of the adjusting ring 25 passing through the adjusting rods 13, so Starting from the basic position shown in Fig. 8, the position shown in Fig.
  • the angle lever 26 is taken in principle during the rotation of the adjusting ring 25, which results from the illustration according to FIG. 7, that the adjusting ring 33, in the slot 32 of the angle lever 26 is mounted, is guided on the threaded rod 36 in the axial direction ,
  • the actuating element 34 (FIG. 5) is adjusted in the axial direction.
  • the actuating element 34 in this case has an annular part 39 with a U-shaped profile, which cooperates positively in the axial direction with a projection on the adjusting ring 33.
  • a relative movement of the adjusting ring and the U-profile is possible, which may be provided to reduce the friction rollers either on the adjusting ring 33 or on the U-profile 39.

Landscapes

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

Abstract

L'invention concerne un dispositif pour ajuster le sens d'écoulement, notamment d'un tourbillonnement, d'air ou de gaz de combustion dans un brûleur pour la combustion de combustibles pulvérulents ou en grains fins, fluides et/ou gazeux, notamment pour des fours tubulaires rotatifs, comprenant au moins un canal d'air primaire (1) et au moins un bec brûleur (2). Le canal d'air primaire (1) présente au moins un paquet de lamelles (8) comportant une pluralité de lamelles (9) parallèles, les lamelles (9) étant montées de manière à pouvoir tourner les unes par rapport aux autres autour d'un axe commun (11) et/ou de manière déplaçable les unes par rapport aux autres et présentant dans la position de base au moins un premier groupe d'évidements (10) alignés les uns sur les autres qui forment ensemble un canal (12), le canal (12) présentant en présence de lamelles (9) tournées ou déplacées successivement par rapport à la position de base un tracé s'écartant de la position de base, notamment incliné et/ou courbe, notamment en forme d'hélice. Un dispositif d'ajustement est prévu pour faire tourner ou pour déplacer les lamelles (9).
EP10721098A 2009-05-19 2010-05-19 Dispositif d'ajustement du tourbillonnement pour un brûleur Withdrawn EP2433051A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT7872009A AT507901B1 (de) 2009-05-19 2009-05-19 Dralleinstellvorrichtung für einen brenner
AT13902009A AT507902B1 (de) 2009-05-19 2009-09-03 Dralleinstellvorrichtung für einen brenner
PCT/AT2010/000172 WO2010132911A2 (fr) 2009-05-19 2010-05-19 Dispositif d'ajustement du tourbillonnement pour un brûleur

Publications (1)

Publication Number Publication Date
EP2433051A2 true EP2433051A2 (fr) 2012-03-28

Family

ID=42676635

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10721098A Withdrawn EP2433051A2 (fr) 2009-05-19 2010-05-19 Dispositif d'ajustement du tourbillonnement pour un brûleur

Country Status (5)

Country Link
EP (1) EP2433051A2 (fr)
CN (1) CN102460014A (fr)
AT (2) AT507901B1 (fr)
BR (1) BRPI1013066A2 (fr)
WO (1) WO2010132911A2 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012007884A1 (de) * 2012-04-23 2013-10-24 Babcock Borsig Steinmüller Gmbh Brenner für staub- und/oder partikelförmige Brennstoffe mit veränderlichem Drall
DE102014105166B3 (de) * 2014-03-12 2015-08-06 Max Weishaupt Gmbh Drallerzeuger für einen Brenner sowie damit versehene Mischeinrichtung und damit versehener Brenner
CN108730970A (zh) * 2017-04-15 2018-11-02 南京建安机械制造有限公司 五通道煤粉燃烧器
PL236104B1 (pl) * 2018-04-25 2020-12-14 Pellasx Spolka Z Ograniczona Odpowiedzialnoscia Spolka Komandytowa Palnik peletów z dopalaczem
CN112628728B (zh) * 2020-12-22 2023-05-12 江苏羚羊机械有限公司 一种新型回转窑燃烧器可调旋流装置
CN114674146B (zh) * 2022-03-18 2024-06-07 天津水泥工业设计研究院有限公司 一种水泥回转窑燃烧器智能控制系统及其控制方法

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Publication number Priority date Publication date Assignee Title
GB899766A (en) * 1958-03-06 1962-06-27 Liago S A Improvements relating to air regulating device, especially for oilburners
JPS6162704A (ja) * 1984-08-31 1986-03-31 Onoda Cement Co Ltd バ−ナ
GB2253476B (en) * 1991-03-08 1994-09-07 Ind Tech Res Inst A swirl generator with improved radial vanes
ATA211493A (de) * 1993-10-20 1996-07-15 Unitherm Oesterreich Gmbh Brenner
DE19648981B4 (de) * 1996-11-26 2007-02-15 Polysius Ag Brenner
DE202005011690U1 (de) * 2005-07-21 2005-11-17 Sks Gmbh Gasbrenner
JP2009264654A (ja) * 2008-04-24 2009-11-12 Babcock Hitachi Kk 微粉炭バーナ

Non-Patent Citations (1)

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Title
See references of WO2010132911A3 *

Also Published As

Publication number Publication date
WO2010132911A3 (fr) 2011-12-01
AT507901B1 (de) 2010-09-15
WO2010132911A2 (fr) 2010-11-25
BRPI1013066A2 (pt) 2016-04-05
AT507902B1 (de) 2010-09-15
AT507901A4 (de) 2010-09-15
CN102460014A (zh) 2012-05-16
AT507902A4 (de) 2010-09-15

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