CN203718818U - Rocking secondary air nozzle with adjustable area - Google Patents
Rocking secondary air nozzle with adjustable area Download PDFInfo
- Publication number
- CN203718818U CN203718818U CN201420035634.6U CN201420035634U CN203718818U CN 203718818 U CN203718818 U CN 203718818U CN 201420035634 U CN201420035634 U CN 201420035634U CN 203718818 U CN203718818 U CN 203718818U
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- area
- inside casing
- nozzle
- nozzle inside
- conditioning box
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Abstract
The utility model provides a rocking secondary air nozzle with adjustable area. The rocking secondary air nozzle comprises a nozzle inner frame, area adjusting frames, nozzle support devices, first bearings, and second bearings. The first bearings are used for rotating the nozzle inner frame; the second bearings are used for rotating the area adjusting frames. The nozzle inner frame is rotatably connected with the nozzle support devices through the first bearings; the area adjusting frames are rotatably connected with the nozzle inner frame. When the nozzle inner frame rocks, the area adjusting frames rock with the nozzle inner frame, and the flow direction of secondary air is adjusted accordingly; when the area adjusting frames rock independently, the speed of secondary air is changed by adjusting the depth of the nozzle inner frame clamped by the area adjusting frames so as to adjust the flow area of the nozzle. The rocking secondary air nozzle has the advantages that mixing of the secondary air and incompletely-burning combustibles can be enhanced by adjusting the flow direction of secondary air and the flow speed of the secondary air, burning efficiency of a boiler is guaranteed, hearth coke is decreased, emission of NOx is low, temperature difference of fume from an outlet of a hearth can be improved, uniformity of gas flow through the outlet of the hearth can be improved, and the boiler is more adaptable to changes in coal type and changes in load.
Description
Technical field
The utility model relates to the adjustable and swingable overfire air jet of a kind of area, belongs to combustion apparatus field.
Background technology
In service at boiler, Secondary Air provides fuel after-flame required air, by the adjusting of Secondary Air airflow direction and Secondary Air flow velocity, can strengthen mixing of Secondary Air and unburned combustible, ensure the efficiency of combustion of boiler, reduce the generation of burner hearth coking and NOx, can improve furnace outlet gas temperature deviation and furnace outlet airflow homogeneity simultaneously.Visible, the swingable property that the reasonability of Secondary Air flow velocity and Secondary Air flow to plays very important effect in boiler operatiopn.
But, at boiler during at actual motion, changing or load need to regulate time when using coal, actual required secondary air flow and best Secondary Air flow to corresponding variation also can occur.Traditional boiler-burner adopts the flow of the each overfire air jet of mode control of damper baffle plate conventionally.Because the overfire air jet of current boiler-burner is adopted as alloy-steel plate splicing or foundry goods conventionally, spout its actual internal area after factory machines is just definite.The flow velocity of spout can not be along with coal, load variations and is changed, thereby the performance of boiler can not get optimal value.
Therefore, need the adjustable and simultaneously swingable overfire air jet of a kind of area, to solve boiler coal type change, the caused Secondary Air flow velocity of load variations and Secondary Air direction variation issue accordingly.
Summary of the invention
Problem to be solved in the utility model is that the overfire air jet that overcomes boiler-burner in prior art can not be realized swingable defect of adjustable while of area of injection orifice, provides a kind of area adjustable and swingable overfire air jet.
In order to address the above problem, adjustable and the swingable overfire air jet of a kind of area that the technical solution of the utility model provides, is characterized in that: the bearing that overfire air jet is rotated for nozzle inside casing by nozzle inside casing, two parts area conditioning box, two parts nozzle support tumbler, two and four form for area conditioning box rolling bearing.Bracing or strutting arrangement becomes Γ type, can be cut or steel plate is spelled and formed by angle steel, and a side is fixed on bellows, and opposite side central upper portion has Φ 1 hole, and nozzle inside casing is rotationally connected by bearing and this hole, as the center of nozzle rotation, realizes the support to nozzle simultaneously.Nozzle inside casing is made up of two gripper shoes and some steel plate splicings, in two gripper shoes, one end central authorities open Φ 1 hole, be rotationally connected by bearing and bracing or strutting arrangement, for the support of whole nozzle and the oscillation center of nozzle inside casing, between two gripper shoes, there are some horizontal and vertical steel plates, form the frame structure with rigidity with two gripper shoes, can select the quantity of horizontal and vertical steel plate to ensure the rigidity of nozzle inside casing according to the size of nozzle, Secondary Air air-flow is carried out to rectification simultaneously, on nozzle inside casing steel plate, departing from Φ 1 hole site arranges one and draws a little, can with pendulous device active link, have two Φ 2 holes in gripper shoe Φ 1 both sides, hole, be rotationally connected by bearing and two conditioning boxes, nozzle inside casing can not only self swing, also Secondary Air air-flow is carried out to rectification, the strong point simultaneously rotating as area conditioning box.Two area conditioning boxes become groove shape, one end is straight groove, the other end is arc groove, be clipped in outside two gripper shoes of nozzle inside casing, on the dual-side of area conditioning box, have Φ 2 holes, Φ opens in 2 holes the concave surface side in the arc-shaped at conditioning box, be dynamically connected by bearing rotary with nozzle inside casing, the angle of arc section is γ, when its size will ensure the swing of nozzle inside casing and the swing of area conditioning box, the gap of area conditioning box edge and case shell inwall is constant to control inleakage, arranging one in the end of arc section draws a little, with pendulous device active link, when pendulous device pulls nozzle inside casing, nozzle starts to swing, conditioning box swings centered by Φ 1 hole with nozzle inside casing, nozzle inside casing can rotate beta angle to both sides centered by Φ 1 hole bearing, to realize the adjusting to Secondary Air airflow direction, in the time being connected in the swing transposition swing of conditioning box, conditioning box also rotates centered by Φ 2 holes, conditioning box can rotate α degree angle centered by Φ 2 hole bearings, press from both sides the circulation area of the depth adjustment nozzle of nozzle inside casing by changing conditioning box straight section, thereby change the speed of Secondary Air.
Preferably, the face area of described nozzle inside casing is greater than 1/3 with the ratio of described overfire air jet maximum area.
Preferably, described area conditioning box rotates α=0 ~ 30 ° centered by Φ 2 hole bearings.
Preferably, described nozzle inside casing rotates β=0 ~ 25 ° centered by Φ 1 hole bearing to both sides.
Preferably, the angle of the concave surface arc section of described conditioning box is γ=alpha+beta.
Adjustable and the swingable overfire air jet of a kind of area that the utility model provides, has following beneficial effect.
(1) by changing Secondary Air effluxvelocity and angle, can strengthen mixing of Secondary Air and unburned combustible, solve the problems such as fly ash combustible material height that in stove, integrated air classification technique brings, the efficiency of combustion of guarantee boiler.
(2) by changing Secondary Air angle, make burner hearth surrounding in enriched air district, reduce furnace wall overtemperature and burner hearth coking, increase the security of boiler operatiopn.
(3) by changing Secondary Air effluxvelocity and angle, regulate the incorporation time of a Secondary Air, reduce the discharge of NOx, environmental protection is had to important meaning.
(4) by changing Secondary Air effluxvelocity and angle, solve the problems such as the velocity of flue gas of the furnace outlet that tangential firing mode brings and temperature deviation are large, reduce furnace outlet gas temperature deviation and increase furnace outlet airflow homogeneity.
(5) by changing Secondary Air effluxvelocity and angle, increase the adaptive capacity of boiler to coal type change, increase stationarity and the security of boiler to variable load operation.
Adjustable and the swingable overfire air jet of a kind of area that the utility model provides, realized nozzle swingable in, can regulate its circulation area, realized Secondary Air flowed to and the control of Secondary Air flow velocity.
Brief description of the drawings
Fig. 1 be a kind of can horizontal hunting and the sectional elevation of the adjustable overfire air jet of area in the horizontal direction.
Fig. 2 be a kind of can horizontal hunting and the profilograph of the adjustable overfire air jet of area in the horizontal direction.
Fig. 3 be a kind of can horizontal hunting and in the horizontal direction the spout of the adjustable overfire air jet of area to figure.
Fig. 4 is a kind of swinging up and down and the sectional elevation of the adjustable overfire air jet of in the vertical direction area.
Fig. 5 is a kind of swinging up and down and the profilograph of the adjustable overfire air jet of in the vertical direction area.
Fig. 6 be a kind of swing up and down and the spout of the adjustable overfire air jet of in the vertical direction area to figure.
description of reference numerals
1,10----nozzle inside casing, 2-1,2-2,11-1,11-2----area conditioning box, 3-1,3-2,12-1,12-2----nozzle support tumbler, 4,9,13,18----bearing, 5,14----case shell, Φ 1----gripper shoe coordinates opening diameter with nozzle support tumbler, and 6,7,8,15,16,17----pendulous device, Φ 2----gripper shoe coordinates opening diameter, γ with area conditioning box
1, γ
2---the angle of-area conditioning box arc section, β
1, β
2----nozzle inside casing rotational angle, α
1, α
2----area conditioning box rotational angle.
detailed description of the invention
For the utility model is become apparent, hereby with two preferred embodiments, and coordinate accompanying drawing to be described in detail below.
embodiment 1: overfire air jet can horizontal hunting and area is adjustable in the horizontal direction.
Fig. 1 is the sectional elevation of embodiment 1 overfire air jet, Fig. 2 is the longitudinal section of embodiment 1 overfire air jet, Fig. 3 is that the spout of embodiment 1 overfire air jet is to figure, described overfire air jet is by nozzle inside casing (1), two parts area conditioning box (2-1,2-2), two parts nozzle support tumbler (3-1,3-2), two for nozzle inside casing (1) rotate bearing (4) and four form for area conditioning box (2-1,2-2) rolling bearing (9).Supporting rotating device (3-1,3-2) become Γ type, can by angle steel cut or steel plate spell form, one side is fixed on the upper lower clapboard of case shell (5), opposite side central upper portion has Φ 1 hole, nozzle inside casing (1) is connected with this hole by bearing (4), and the center horizontally rotating as nozzle, realizes simultaneously the support of nozzle is fixed.Nozzle inside casing (1) is made up of two gripper shoes and steel plate splicing, in two gripper shoes, one end central authorities open Φ 1 hole, by bearing (4) and bracing or strutting arrangement (3-1, 3-2) be rotationally connected, for the support of whole nozzle and the swing of nozzle inside casing (1), between two gripper shoes, there is one to be laterally listed as vertical steel plate with two, form the frame structure with rigidity with two gripper shoes, horizontal and vertical steel plate ensures the rigidity of nozzle inside casing (1), Secondary Air air-flow is carried out to rectification simultaneously, on nozzle inside casing (1) steel plate, departing from Φ 1 hole site arranges one and draws a little, can with horizontal hunting device (7) active link, have two Φ 2 holes in gripper shoe Φ 1 both sides, hole, be rotationally connected by bearing (9) and two conditioning boxes, nozzle inside casing (1) can not only own level swing, also Secondary Air air-flow is carried out to rectification, simultaneously as area conditioning box (2-1, fulcrum 2-2) horizontally rotating.Two area conditioning box (2-1,2-2) become groove shape, one end is straight groove, the other end is arc groove, is clipped in outside two gripper shoes of nozzle inside casing (1), at area conditioning box (2-1, on dual-side 2-2), have Φ 2 holes, Φ opens in 2 holes the concave surface side in the arc-shaped at conditioning box, is rotationally connected by bearing (9) with nozzle inside casing (1), and the angle of arc section is γ
1, its size will ensure nozzle inside casing (1) horizontal hunting and area conditioning box (2-1, 2-2) area conditioning box edge (2-1 when horizontal hunting, 2-2) constant to control inleakage with the gap of case shell (5) inwall, arranging one in the end of arc section draws a little, with horizontal hunting device (6, 8) active link, when horizontal hunting device (6, 8) pull nozzle inside casing (1), nozzle starts to swing, conditioning box (2-1, 2-2) swing centered by Φ 1 hole with nozzle inside casing (1), nozzle inside casing (1) can horizontally rotate β to both sides centered by Φ 1 hole bearing
1degree angle, to realize the adjusting to Secondary Air airflow direction, when being connected in conditioning box (2-1, when horizontal hunting transposition (6,8) 2-2) swings, conditioning box (2-1,2-2) also centered by Φ 2 holes, rotate, conditioning box (2-1,2-2) can horizontally rotate α centered by Φ 2 hole bearings (9)
1degree angle, the circulation area of pressing from both sides the depth adjustment nozzle of nozzle inside casing (1) by changing conditioning box (2-1,2-2) straight section, thereby the speed of change Secondary Air.
embodiment 2: overfire air jet can swing up and down and in the vertical direction area adjustable.
Fig. 4 is the sectional elevation of embodiment 2 overfire air jets, Fig. 5 is the longitudinal section of embodiment 2 overfire air jets, Fig. 6 is that the spout of embodiment 2 overfire air jets is to figure, described overfire air jet is by nozzle inside casing (10), two parts area conditioning box (11-1,11-2), two parts nozzle support tumbler (12-1,12-2), two for nozzle inside casing (10) rotate bearing (13) and four form for area conditioning box (11-1,11-2) rolling bearing (18).Supporting rotating device (12-1,12-2) become Γ type, can by angle steel cut or steel plate spell form, one side is fixed on the left and right plate of case shell (14), opposite side central upper portion has Φ 1 hole, nozzle inside casing (10) is connected with this hole by bearing (13), and the center of rotating up and down as nozzle, realizes simultaneously the support of nozzle is fixed.Nozzle inside casing (10) is made up of two gripper shoes and steel plate splicing, in two gripper shoes, one end central authorities open Φ 1 hole, by bearing (13) and bracing or strutting arrangement (12-1, 12-2) be rotationally connected, for the support of whole nozzle and the swing of nozzle inside casing (10), between two gripper shoes, there are two row laterally and three blocks of vertical steel plates, form the frame structure with rigidity with two gripper shoes, horizontal and vertical steel plate ensures the rigidity of nozzle inside casing (10), Secondary Air air-flow is carried out to rectification simultaneously, on nozzle inside casing (10) steel plate, departing from Φ 1 hole site arranges one and draws a little, can with swing up and down device (16) active link, have two Φ 2 holes in gripper shoe Φ 1 both sides, hole, be rotationally connected by bearing (18) and two conditioning boxes, nozzle inside casing (10) can not only self swing up and down, also Secondary Air air-flow is carried out to rectification, simultaneously as area conditioning box (11-1, fulcrum 11-2) rotating up and down.Two area conditioning box (11-1,11-2) become groove shape, one end is straight groove, the other end is arc groove, is clipped in outside two gripper shoes of nozzle inside casing (10), at area conditioning box (11-1, on dual-side 11-2), have Φ 2 holes, Φ opens in 2 holes the concave surface side in the arc-shaped at conditioning box, is rotationally connected by bearing (18) with nozzle inside casing (10), and the angle of arc section is γ
2, its size will ensure that nozzle inside casing (10) swings up and down and area conditioning box (11-1, area conditioning box edge (11-1 while 11-2) swinging up and down, 11-2) constant to control inleakage with the gap of case shell (14) inwall, arranging one in the end of arc section draws a little, with swing up and down device (15, 17) active link, when swinging up and down device (15, 17) pull nozzle inside casing (10), nozzle starts to swing, conditioning box (11-1, 11-2) swing centered by Φ 1 hole with nozzle inside casing (10), nozzle inside casing (10) can rotate up and down β centered by Φ 1 hole bearing
2degree angle, to realize the adjusting to Secondary Air airflow direction, when being connected in conditioning box (11-1,11-2) swing up and down transposition (15,17), while swing, conditioning box (11-1,11-2) also rotates centered by Φ 2 holes, conditioning box (11-1,11-2) can rotate up and down α centered by Φ 2 hole bearings (18)
2degree angle, the circulation area of pressing from both sides the depth adjustment nozzle of nozzle inside casing (10) by changing conditioning box (11-1,11-2) straight section, thereby the speed of change Secondary Air.
Claims (7)
1. the adjustable and swingable overfire air jet of area, is characterized in that described overfire air jet is by nozzle inside casing (1,10), area conditioning box (2-1,2-2,11-1,11-2), nozzle support tumbler (3-1,3-2,12-1,12-2), for nozzle inside casing (1,10) bearing (4 rotating, 13) with for area conditioning box (2-1,2-2,11-1,11-2) rolling bearing (9,18) composition, supporting rotating device (3-1,3-2,12-1, a 12-2) side is fixed on the upper of case shell (5,14), and opposite side central upper portion has Φ 1 hole, nozzle inside casing (1, 10) form frame structure by two gripper shoes and some steel plate splicings, in two gripper shoes, one end central authorities open Φ 1 hole, by bearing (4, 13) with bracing or strutting arrangement (3-1, 3-2, 12-1, 12-2) be rotationally connected, nozzle inside casing (1, 10) with pendulous device (7, 16) active link, have two Φ 2 holes in gripper shoe Φ 1 both sides, hole, two area conditioning box (2-1, 2-2, 11-1, 11-2) become groove shape, one end is straight groove, the other end is arc groove, be clipped in nozzle inside casing (1, 10) outside two gripper shoes, at area conditioning box (2-1, 2-2, 11-1, on dual-side 11-2), have Φ 2 holes, Φ opens in 2 holes the concave surface one end in the arc-shaped at conditioning box, with nozzle inside casing (1, 10) by bearing (9, 18) be rotationally connected, the angle of arc section is γ, arranging one in the end of arc section draws a little, with pendulous device (6, 8, 15, 17) active link, nozzle inside casing (1, 10) with Φ 1 hole bearing (4, 13) centered by, can rotate beta angle to both sides, conditioning box (2-1, 2-2, 11-1, 11-2) with Φ 2 hole bearings (9, 18) centered by, can rotate α degree angle.
2. the adjustable and swingable overfire air jet of a kind of area as claimed in claim 1, is characterized in that described supporting rotating device (3-1,3-2,12-1,12-2) becomes Γ type, can be cut or steel plate is spelled and formed by angle steel.
3. the adjustable and swingable overfire air jet of a kind of area as claimed in claim 1, is characterized in that the face area of described nozzle inside casing (1,10) and the ratio of described overfire air jet maximum area are greater than 1/3.
4. the adjustable and swingable overfire air jet of a kind of area as claimed in claim 1, is characterized in that described area conditioning box (2-1,2-2,11-1,11-2) rotates α=0 ~ 30 ° centered by Φ 2 hole bearings (9,18).
5. the adjustable and swingable overfire air jet of a kind of area as claimed in claim 1, is characterized in that described nozzle inside casing (1,10) rotates β=0 ~ 25 ° centered by Φ 1 hole bearing (4,13) to both sides.
6. the adjustable and swingable overfire air jet of a kind of area as claimed in claim 1, is characterized in that the angle of the concave surface arc section of described conditioning box (2-1,2-2,11-1,11-2) is γ=alpha+beta.
7. the adjustable and swingable overfire air jet of a kind of area as claimed in claim 1, is characterized in that described nozzle inside casing (1,10) has at least two row steel plates and nozzle inside casing (1,10) gripper shoe to be vertically connected to form frame structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420035634.6U CN203718818U (en) | 2014-01-21 | 2014-01-21 | Rocking secondary air nozzle with adjustable area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420035634.6U CN203718818U (en) | 2014-01-21 | 2014-01-21 | Rocking secondary air nozzle with adjustable area |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203718818U true CN203718818U (en) | 2014-07-16 |
Family
ID=51157965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420035634.6U Expired - Fee Related CN203718818U (en) | 2014-01-21 | 2014-01-21 | Rocking secondary air nozzle with adjustable area |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203718818U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104791833A (en) * | 2014-01-21 | 2015-07-22 | 四川川锅锅炉有限责任公司 | Area-adjustable secondary air nozzle capable of oscillating |
| EP3795332A3 (en) * | 2019-08-01 | 2021-04-14 | Brückner Maschinenbau GmbH & Co. Kg | Ventilation module and associated stretching system |
-
2014
- 2014-01-21 CN CN201420035634.6U patent/CN203718818U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104791833A (en) * | 2014-01-21 | 2015-07-22 | 四川川锅锅炉有限责任公司 | Area-adjustable secondary air nozzle capable of oscillating |
| EP3795332A3 (en) * | 2019-08-01 | 2021-04-14 | Brückner Maschinenbau GmbH & Co. Kg | Ventilation module and associated stretching system |
| US11759981B2 (en) | 2019-08-01 | 2023-09-19 | Brückner Maschinenbau GmbH | Ventilation module and associated stretching system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140716 Termination date: 20170121 |
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| CF01 | Termination of patent right due to non-payment of annual fee |