EP0822375B1 - Busette de soufflage d'air secondaire dans un foyer de combustion - Google Patents
Busette de soufflage d'air secondaire dans un foyer de combustion Download PDFInfo
- Publication number
- EP0822375B1 EP0822375B1 EP97401781A EP97401781A EP0822375B1 EP 0822375 B1 EP0822375 B1 EP 0822375B1 EP 97401781 A EP97401781 A EP 97401781A EP 97401781 A EP97401781 A EP 97401781A EP 0822375 B1 EP0822375 B1 EP 0822375B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- walls
- axis
- nozzle
- box
- flaps
- 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
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
- F23M9/00—Baffles or deflectors for air or combustion products; Flame shields
- F23M9/02—Baffles or deflectors for air or combustion products; Flame shields in air inlets
Definitions
- the present invention relates to a nozzle blowing secondary air into a combustion furnace.
- a nozzle of blowing secondary air into a combustion furnace comprising a box of rectangular section made up of four facing walls two by two said first walls and second walls and pivoted by means of a member of control along an axis known as a traversing axis of rotation said first walls, the box being open on two opposite faces, one being the air inlet face and the other the outlet face of this air in the hearth.
- Vertical series of such superimposed nozzles are generally installed at the four corners of the combustion at the top of the burner boxes and are used to balance the temperature inside the fireplace and thus can allow the reduction of oxide emissions nitrogen.
- orientable nozzles vertically so that secondary air can be blown out on a vertical range.
- they consist a rotary box on a horizontal axis thanks to a arrangement of studs arranged on the first walls vertical of this box, the rotation being actuated by a control member consisting of a rod fixed so articulated on one of these walls above the axis of rotation and pull or push to orient the nozzle.
- the invention allows the temperature to be adjusted in the entire focus, allowing adjustment of the orientation horizontal outgoing air flow, without modification of the existing vertical orientation arrangement.
- a flap structure perpendicular to the second walls is arranged in the box, each of the flaps being pivotable thanks to an actuation arrangement according respectively to a axis perpendicular to the axis of rotation and intersecting it.
- said flaps are parallel and integral.
- said actuation arrangement is connected to a shutter and consists of a clevis hinged on the shutter along an axis perpendicular to this shutter and mounted rotatable around its longitudinal axis on a workpiece articulated on a sliding actuation shaft according to its longitudinal axis and parallel to the second walls.
- the box is made of sheet metal wavy.
- the box can be reinforced on the outlet face of bars integral with the second walls and parallel to the first walls.
- Figure 1 is a horizontal sectional view of a combustion hearth.
- Figures 2A and 2B are vertical section views a blowing nozzle according to the invention, in upright position and in an upward facing position.
- Figures 3A and 3B are sectional views horizontal of a blowing nozzle conforming to the invention, in a straight position and in a position oriented towards the right.
- Figure 4 is a cross-sectional view of detail.
- Figure 5 is a front view of a nozzle blowing according to the invention, seen from the side of the combustion.
- the combustion hearth 1, represented in FIG. 1, of rectangular horizontal section has four corners of the burner boxes 2 fitted with secondary air supply 3. These burner boxes are consisting of series of nozzles superimposed on one part the height of the fireplace.
- these nozzles 3 blow air secondary on spaces 4 of horizontal dimension constant. There are then spaces 5 in the hearth in which cannot be injected with secondary air and where the temperature cannot be regulated.
- these nozzles 3 are also horizontally orientable without modification of the vertical adjustment arrangement and therefore are orientable in all directions and it is possible to adjust the temperature in the entire fireplace.
- the nozzles 3 are preferably designed as shown in the other figures.
- the blowing nozzle 3 comprises a box 6 of rectangular section consisting of four facing walls screws two by two, two vertical walls 6A called first walls and two walls slightly inclined with respect to the horizontal 6B said second walls, advantageously in corrugated sheet in order to be slightly deformable under the effect of temperature.
- Box 6 is open on two sides opposite, one being the 6D inlet face of the air and the other the outlet face 6C of this air in the hearth.
- the box 6 is supported by a support structure 8 and can be rotated by means of a control member according to a horizontal axis 7 said axis of rotation passing through said first walls 6A.
- This control member is made up a rod 9 hingedly attached to one of the walls vertical 6A above the axis of rotation 7 and drawn or push to vertically orient the box 6 which can pivot thanks to an arrangement of tenons arranged on the vertical walls 6A of this box 6.
- the box 6 is reinforced on the outlet face 6C of bars 11 integral with the inclined walls 6B and parallel with vertical walls 6A.
- a structure 12 of flaps perpendicular to the walls 6B is inclined in box 6.
- This structure 12 consists of flaps 12A, 12B parallel and secured by means of flat profiles 12C, 12D on which the shutters are connected.
- Each of the flaps 12A, 12B is pivotable on two pivoting joints 20A and 20B arranged on the second walls 6B of box 6 thanks to an arrangement actuation along an axis 13 respectively perpendicular to the axis of rotation 7 and cutting it.
- This actuation arrangement is connected to a flap, advantageously the central flap 12A and consists of a yoke 14 articulated on the flap 12A along an axis perpendicular to this flap 12A and rotatably mounted around its longitudinal axis on a part 14A articulated on a horizontal actuating shaft 15 sliding along its axis longitudinal and supported by guide rings 18 held by gussets 19 on the support structure 8. More specifically, the part 14A is a flat profile provided of an oblong light 16 receiving a tenon 17 passing through the shaft 15 as shown in FIG. 4.
- the orientation vertical of the secondary air flow by maneuvering the rod 9 by pushing or pulling it and adjusting its horizontal orientation by sliding the shaft 15. These two adjustments can be made simultaneously which allows orientation in all directions.
- the horizontal orientation arrangement can be installed on an existing orientation nozzle vertical.
Description
Claims (5)
- Busette de soufflage d'air secondaire dans un foyer de combustion comportant un caisson (6) de section rectangulaire constitué de quatre parois en vis à vis deux à deux dites premières parois (6A) et secondes parois (6B) et pouvant être tourné au moyen d'un organe de commande selon un axe dit axe de rotation (7) traversant lesdites premières parois (6A), le caisson étant ouvert sur deux faces opposées (6C, 6D), l'une étant la face d'entrée (6D) de l'air et l'autre la face de sortie (6C) de cet air dans le foyer, caractérisée en ce qu'une structure (12) de volets perpendiculaires aux secondes parois (6B) est disposée dans le caisson (6), chacun des volets (12A, 12B) pouvant être tourné grâce à un agencement d'actionnement selon respectivement un axe (13) perpendiculaire à l'axe de rotation (7) et coupant celui-ci.
- Busette selon la revendication 1, caractérisée en ce que lesdits volets (12A, 12B) sont parallèles et solidaires.
- Busette selon la revendication 2, caractérisée en ce que ledit agencement d'actionnement est relié à un volet (12A) et est constitué d'une chape (13) articulée sur le volet (12A) selon un axe perpendiculaire à ce volet et montée rotative autour de son axe longitudinal sur une pièce (14) articulée sur un arbre d'actionnement (15) coulissant selon son axe longitudinal et parallèle aux secondes parois (12B).
- Busette selon l'une des revendications précédentes, caractérisée en ce que le caisson (6) est constitué de tôle ondulée.
- Busette selon l'une des revendications précédentes, caractérisée en ce que le caisson (6) est renforcé sur la face de sortie (6C) de barreaux (11) solidaires des secondes parois (6B) et parallèles aux premières parois (6A).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9609646 | 1996-07-31 | ||
FR9609646A FR2752042B1 (fr) | 1996-07-31 | 1996-07-31 | Busette de soufflage d'air secondaire dans un foyer de combustion |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0822375A1 EP0822375A1 (fr) | 1998-02-04 |
EP0822375B1 true EP0822375B1 (fr) | 2001-10-31 |
Family
ID=9494675
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97401781A Expired - Lifetime EP0822375B1 (fr) | 1996-07-31 | 1997-07-24 | Busette de soufflage d'air secondaire dans un foyer de combustion |
Country Status (9)
Country | Link |
---|---|
EP (1) | EP0822375B1 (fr) |
CN (1) | CN1174959A (fr) |
CA (1) | CA2210958C (fr) |
DK (1) | DK0822375T3 (fr) |
ES (1) | ES2165005T3 (fr) |
FR (1) | FR2752042B1 (fr) |
PT (1) | PT822375E (fr) |
RU (1) | RU2152563C1 (fr) |
ZA (1) | ZA976701B (fr) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104048294B (zh) * | 2013-03-15 | 2016-08-31 | 北京航天动力研究所 | 一种可控火焰摆动式燃气燃烧器 |
CN103234199B (zh) * | 2013-04-27 | 2015-08-12 | 上海交通大学 | 摆动式燃尽风装置及燃尽风系统以及燃尽风控制方法 |
CN106861963B (zh) * | 2017-03-10 | 2023-10-10 | 晋能控股煤业集团有限公司 | 货运列车防冻液喷淋装置 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3942419A (en) * | 1974-02-21 | 1976-03-09 | Donald Bramston Beach | Barrel type air diffuser |
US5020454A (en) * | 1990-10-31 | 1991-06-04 | Combustion Engineering, Inc. | Clustered concentric tangential firing system |
CA2091341C (fr) * | 1990-10-31 | 1995-12-05 | John Leonard Marion | Controle des emissions no _par jet d'air passant au-dessus d e la flamme |
FR2689211B1 (fr) * | 1992-03-30 | 1994-05-06 | Stein Industrie | Busette orientable en materiau refractaire pour injection d'air et de combustible dans les bruleurs de chaudieres de centrales thermiques. |
-
1996
- 1996-07-31 FR FR9609646A patent/FR2752042B1/fr not_active Expired - Fee Related
-
1997
- 1997-07-24 DK DK97401781T patent/DK0822375T3/da active
- 1997-07-24 PT PT97401781T patent/PT822375E/pt unknown
- 1997-07-24 EP EP97401781A patent/EP0822375B1/fr not_active Expired - Lifetime
- 1997-07-24 ES ES97401781T patent/ES2165005T3/es not_active Expired - Lifetime
- 1997-07-28 ZA ZA9706701A patent/ZA976701B/xx unknown
- 1997-07-29 CN CN97115470A patent/CN1174959A/zh active Pending
- 1997-07-30 RU RU97113085/03A patent/RU2152563C1/ru active
- 1997-07-30 CA CA002210958A patent/CA2210958C/fr not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
ZA976701B (en) | 1998-02-10 |
DK0822375T3 (da) | 2002-02-25 |
FR2752042A1 (fr) | 1998-02-06 |
CA2210958A1 (fr) | 1998-01-31 |
PT822375E (pt) | 2002-04-29 |
CA2210958C (fr) | 2000-10-10 |
FR2752042B1 (fr) | 1998-09-11 |
EP0822375A1 (fr) | 1998-02-04 |
ES2165005T3 (es) | 2002-03-01 |
CN1174959A (zh) | 1998-03-04 |
RU2152563C1 (ru) | 2000-07-10 |
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