CN209655298U - A kind of low nitrogen burner of flame profile automatic adjustment - Google Patents
A kind of low nitrogen burner of flame profile automatic adjustment Download PDFInfo
- Publication number
- CN209655298U CN209655298U CN201920233065.9U CN201920233065U CN209655298U CN 209655298 U CN209655298 U CN 209655298U CN 201920233065 U CN201920233065 U CN 201920233065U CN 209655298 U CN209655298 U CN 209655298U
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- air duct
- spray gun
- burner
- automatic adjustment
- shaft
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Abstract
The utility model discloses a kind of low nitrogen burners of flame profile automatic adjustment, secondary air channel is formed between interior air duct and outer air duct, tertiary air channel is formed between outer air duct and box shell, eddy flow tray is provided in secondary air channel, primary fuel spray gun and igniting spray gun are located in First air channel, secondary fuel spray gun is located in secondary air channel, and Fuel lance is between tertiary air channel and box shell three times；Each swirl vane is located at outside interior air duct, the corresponding swirl vane of a piece shaft, the end of each shaft is fixed on the inner cylinder of eddy flow tray, each rotating vane is fixed in corresponding shaft, the root of swirl vane is provided with bar shaped plectrum, each bar shaped plectrum is connected with driver plate, and actuator is connected by transmission shaft with driver plate, which can adjust flame profile and air flow rate proportioning according to the size of boiler furnace.
Description
Technical field
The utility model belongs to ultralow nitrogen cleaning technical field of burner, is related to a kind of low nitrogen of flame profile automatic adjustment
Gas burner.
Background technique
Gas burner is broadly divided into pre-mixing type combustion apapratus and non-pre-mixing type combustion apapratus at present, wherein non-pre-mixing type combustion apapratus
It is all made of eddy flow air distribution combustion technology, recirculation zone reaches volume smoking gas and reinforcement air fuel is mixed to be formed in flame kernel
The effect of conjunction, the technology can efficiently reduce the production quantity of nitrogen oxides (NOx) in burning.
In recent years, with newest " atmosphere pollutants emission standards " (GB13223-2011) and the reality of each place " standard "
It applies, the NOx emission limit of China power station and Industrial Boiler has had reached 30mg/m3The history of (standard state, with reference to oxygen amount 3%) is most
Severe specifications, traditional burner face comprehensive substitution with the development that national " pollution treatment subtracts haze " works.But it is fired in replacement
During burner, inevitably there is new burner flame shape (length, diameter) and original boiler is unmatched asks
Topic, causes combustion instability and burner hearth surge, and flame can not be even formed when serious.Existing portioned product is matched regarding to the issue above
The outer air duct that can be pulled axially back and forth along burner has been set, has partially been configured with along the swirl air-distribution disk pulled axially back and forth, two classes
Product due to fuel nozzle ports apart from combustion air outlet distance limitation and regulated quantity is extremely limited, and can because air feed too early or mistake
Evening causes combustion instability, NOx and carbon monoxide (CO) production quantity to increase.In addition, larger gas boiler is logical according to capacity difference
Often there is the case where separate unit furnace configures two and the above burner, adjusts the necessity of burner flame shape not in such boiler
It is only embodied in the above problem, it is often more important that guarantee heating surface by adjusting flame direction of rotation to eliminate residual rotation in furnace
Load is uniform, and cannot achieve this purpose by the position of axially adjustable air duct or eddy flow tray.Based on problem above, it is badly in need of wanting
A kind of low NO that flame profile and air flow rate proportioning can safely, effectively be adjusted according to different boiler furnace sizes.
Utility model content
The shortcomings that the purpose of the utility model is to overcome the above-mentioned prior arts provides a kind of flame profile automatic adjustment
Low nitrogen burner, which can adjust flame profile and air flow rate proportioning according to the size of boiler furnace.
In order to achieve the above objectives, the low nitrogen burner of flame profile automatic adjustment described in the utility model includes interior
Air duct, outer air duct, box shell, eddy flow tray, actuator, several primary fuel spray guns, several igniting spray guns, several secondary fuel spray guns
And several Fuel lances three times；
Interior air duct, outer air duct and box shell successively empty set from inside to outside, and First air channel is formed in interior air duct, interior air duct with
Secondary air channel is formed between outer air duct, is formed tertiary air channel between outer air duct and box shell, is provided with rotation in secondary air channel
Flow table, primary fuel spray gun and igniting spray gun are located in First air channel, and secondary fuel spray gun is located in secondary air channel, three times
Fuel lance is between tertiary air channel and box shell；
The eddy flow tray includes driver plate, transmission shaft, shaft and several swirl vanes, and each swirl vane is located at outside interior air duct,
The corresponding swirl vane of a piece shaft, the end of each shaft are fixed on the inner cylinder of eddy flow tray, and each swirl vane is flexibly connected
In in corresponding shaft, the root of swirl vane is provided with bar shaped plectrum, and each bar shaped plectrum is connected with driver plate, and actuator passes through
Transmission shaft is connected with driver plate.
Primary fuel spout on primary fuel spray gun is arranged along the radial direction of primary fuel spray gun pipette tips；
The pipette tips of secondary fuel spray gun arrange along the direction perpendicular to secondary fuel spray gun gun barrel, and secondary fuel spray gun
Secondary fuel spout is towards eddy flow tray；
The pipette tips of Fuel lance circumferentially direct-injection three times.
The rotation angle range of swirl vane is 0 ° -180 °.
Connecting rod is vertically installed on driver plate, the end on transmission shaft is equipped with swing arm that is vertical and having bar shaped groove, even
Bar is located in the bar shaped groove.
Transmission shaft is sleeved and fixed by locating piece on interior air duct.
Transmission shaft is fixed on interior air duct by first bearing, and the end of transmission shaft passes through burner crust of weathering backboard and passes through
Second bearing is fixed on burner crust of weathering backboard.
Swirl vane is connected by fixed ring with shaft.
It further include burner management system, wherein the control terminal of actuator is connected with burner management system.
The utility model has the following beneficial effects:
For the low nitrogen burner of flame profile automatic adjustment described in the utility model when specific operation, actuator is logical
Crossing transmission shaft, driver plate and bar shaped plectrum drives swirl vane to realize eddy flow around pivot to adjust the angle of swirl vane
The aperture of disk and the adjusting for rotating angle, and then realize the real-time adjusting of flame profile and length, to effectively improve equipment
To the applicability of burner hearth, flue gas rotation direction is adjusted when can play more burner arrangements of single furnace especially for high-capacity gas boiler
The effect of residual rotation is eliminated, to protect furnace heating surface, improves boiler safety and economy.
Detailed description of the invention
Fig. 1 is the schematic diagram of the utility model；
Fig. 2 is the sectional view of the utility model；
Fig. 3 is the structural schematic diagram inside the utility model.
Wherein, 1 it is primary fuel spray gun, 2 be secondary fuel spray gun, 3 be Fuel lance three times, 4 be igniting spray gun, 5 is
First air channel, 6 be secondary air channel, 7 be tertiary air channel, 8 be eddy flow tray, 9 be outer air duct, 10 be swirl vane, 11 be
Bar shaped plectrum, 12 be shaft, 13 be interior air duct, 14 be driver plate, 15 be swing arm, 161 be first bearing, 162 be second bearing, 17
It is burner crust of weathering backboard for transmission shaft, 18.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing:
With reference to Fig. 1, Fig. 2 and Fig. 3, the low nitrogen burner of flame profile automatic adjustment described in the utility model includes
It is interior air duct 13, outer air duct 9, box shell, eddy flow tray 8, actuator, several primary fuel spray guns 1, several igniting spray guns 4, several secondary
Fuel lance 2 and several Fuel lance 3 three times；Interior air duct 13, outer air duct 9 and box shell successively empty set, and interior air duct from inside to outside
First air channel 5 is formed in 13, and secondary air channel 6, shape between outer air duct 9 and box shell are formed between interior air duct 13 and outer air duct 9
At tertiary air channel 7, eddy flow tray 8 is provided in secondary air channel 6, primary fuel spray gun 1 and igniting spray gun 4 are logical positioned at First air
In road 5, secondary fuel spray gun 2 is located in secondary air channel 6, and Fuel lance 3 is between tertiary air channel 7 and box shell three times；
The eddy flow tray 8 includes driver plate 14, transmission shaft 17, shaft 12 and several swirl vanes 11, and each swirl vane 11 is located at interior air duct
Outside 13, the corresponding swirl vane 11 of a shaft 12, the end of each shaft 12 is connected on the inner cylinder of eddy flow tray 8, each eddy flow
Blade 11 is movably connected in corresponding shaft 12, and each swirl vane 11 can be rotated around shaft 12, swirl vane 11
Root is provided with bar shaped plectrum 10, and each bar shaped plectrum 10 is connected with driver plate 14, and actuator passes through transmission shaft 17 and 14 phase of driver plate
Connection.
Primary fuel spout on primary fuel spray gun 1 is arranged along the radial direction of 1 pipette tips of primary fuel spray gun；Secondary fuel spray
The pipette tips of rifle 2 are arranged along the direction perpendicular to 2 gun barrel of secondary fuel spray gun, and the secondary fuel spout court of secondary fuel spray gun 2
To eddy flow tray 8；The pipette tips of Fuel lance 3 circumferentially direct-injection three times.
Connecting rod is vertically installed on driver plate 14, the end on transmission shaft 17 is equipped with swing arm that is vertical and having bar shaped groove
15, connecting rod is located in the bar shaped groove.The rotation angle range of swirl vane 11 is 0 ° -180 °.
Transmission shaft 17 is sleeved and fixed by locating piece on interior air duct 13；Transmission shaft 17 is fixed on by first bearing 161
On interior air duct 13, the end of transmission shaft 17 passes through burner crust of weathering backboard 18 and is fixed on burner wind by second bearing 162
On shell backboard 18；Swirl vane 11 is connected by fixed ring with shaft 12.
Be divided into mutually independent three layers in fuel header, and each layer respectively with primary fuel spray gun 1, secondary fuel spray gun 2
And Fuel lance 3 is connected three times, primary fuel spray gun 1, secondary fuel spray gun 2 and the individually control of Fuel lance 3 three times, with reality
The existing online grade separation ratio of fuel, igniting spray gun 4 are separately configured, are not connected with fuel header.
At work, actuator drives swirl vane 11 same by transmission shaft 17, swing arm 15, driver plate 14 and bar shaped plectrum 10
Step rotation, to realize the adjustment of 8 angle of eddy flow tray, the rotation angle of swirl vane 11 is ± 90 °, be can be realized from complete clockwise
It closes standard-sized sheet and arrives complete counterclockwise close again.The actuator is integrated in burner management system (BMS), to realize 11 jiaos of swirl vane
Spend Automatic Online adjusting.
Interior air duct is placed in rationally to avoid the primary fuel spray gun 1 for being located at interior 13 axle center of air duct and igniting spray gun 4, shaft 12
13 outside and with the non-coaxial arrangement of driver plate 14.
Finally, it should be noted that 8 assembly of eddy flow tray is provided simultaneously with the function for adjusting position axially back and forth in the utility model
Can, eddy flow tray 8 is concentrically mounted on the outside of interior air duct 13, and axially directed by 180 ° of two be arranged on interior air duct 13
Slot constraint, the constraint allow eddy flow tray 8 to move carry out fine position axially back and forth along interior air duct 13.
In addition, when the utility model at work, each point of graduation three ratio of fuel and combustion air: a centrally located combustion gas
Stable flame of centre is formed with First air；On the one hand the tangential swirl combustion air and secondary combustion gas that swirl vane 11 exports guarantee
Flame stabilization is propagated outward, it is often more important that is formed centrally within smoke backflow region, is reduced NOx discharge；Direct current tertiary air and
Combustion gas ensures that flame temperature in radially uniform distribution, and guarantees that fuel is completely burned off three times, it is ensured that the pernicious gases such as no CO are raw
At.
Claims (8)
1. a kind of low nitrogen burner of flame profile automatic adjustment, which is characterized in that including interior air duct (13), outer air duct
(9), box shell, eddy flow tray (8), actuator, several primary fuel spray guns (1), several igniting spray guns (4), the spray of several secondary fuels
Rifle (2) and several Fuel lances three times (3)；
Interior air duct (13), outer air duct (9) and box shell successively empty set from inside to outside, and First air channel is formed in interior air duct (13)
(5), secondary air channel (6) are formed between interior air duct (13) and outer air duct (9), forms tertiary air between outer air duct (9) and box shell
Channel (7), secondary air channel (6) is interior to be provided with eddy flow tray (8), and primary fuel spray gun (1) and igniting spray gun (4) are located at First air
In channel (5), secondary fuel spray gun (2) is located in secondary air channel (6), and Fuel lance (3) is located at outer air duct (9) and case three times
Between shell；
The eddy flow tray (8) includes driver plate (14), transmission shaft (17), shaft (12) and several swirl vanes (11), each eddy flow leaf
Piece (11) is located at interior air duct (13) outside, and the corresponding swirl vane (11) of a shaft (12), the end of each shaft (12) is fixed
In on the inner cylinder of eddy flow tray (8), each swirl vane (11) is movably connected on corresponding shaft (12), the root of swirl vane (11)
Portion is provided with bar shaped plectrum (10), and each bar shaped plectrum (10) is connected with driver plate (14), and actuator is by transmission shaft (17) and dials
Disk (14) is connected.
2. the low nitrogen burner of flame profile automatic adjustment according to claim 1, which is characterized in that primary fuel
Primary fuel spout on spray gun (1) is arranged along the radial direction of primary fuel spray gun (1) pipette tips；
The pipette tips of secondary fuel spray gun (2) are arranged along the direction perpendicular to secondary fuel spray gun (2) gun barrel, and secondary fuel spray gun
(2) secondary fuel spout is towards eddy flow tray (8)；
The pipette tips of Fuel lance (3) circumferentially direct-injection three times.
3. the low nitrogen burner of flame profile automatic adjustment according to claim 1, which is characterized in that swirl vane
(11) rotation angle range is 0 ° -180 °.
4. the low nitrogen burner of flame profile automatic adjustment according to claim 1, which is characterized in that driver plate (14)
On be vertically installed with connecting rod, the end on transmission shaft (17) is equipped with swing arm (15) that is vertical and having bar shaped groove, connecting rod position
In in the bar shaped groove.
5. the low nitrogen burner of flame profile automatic adjustment according to claim 1, which is characterized in that transmission shaft
(17) it is sleeved and fixed by locating piece on interior air duct (13).
6. the low nitrogen burner of flame profile automatic adjustment according to claim 1, which is characterized in that transmission shaft
(17) it is fixed on interior air duct (13) by first bearing (161), the end of transmission shaft (17) passes through burner crust of weathering backboard
(18) and by second bearing (162) it is fixed on burner crust of weathering backboard (18).
7. the low nitrogen burner of flame profile automatic adjustment according to claim 1, which is characterized in that swirl vane
(11) it is connected by fixed ring with shaft (12).
8. the low nitrogen burner of flame profile automatic adjustment according to claim 1, which is characterized in that further include combustion
Burner management system, wherein the control terminal of actuator is connected with burner management system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920233065.9U CN209655298U (en) | 2019-02-22 | 2019-02-22 | A kind of low nitrogen burner of flame profile automatic adjustment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920233065.9U CN209655298U (en) | 2019-02-22 | 2019-02-22 | A kind of low nitrogen burner of flame profile automatic adjustment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209655298U true CN209655298U (en) | 2019-11-19 |
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ID=68525008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920233065.9U Active CN209655298U (en) | 2019-02-22 | 2019-02-22 | A kind of low nitrogen burner of flame profile automatic adjustment |
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| Country | Link |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109724083A (en) * | 2019-02-22 | 2019-05-07 | 西安西热锅炉环保工程有限公司 | A kind of low nitrogen burner of flame profile automatic adjustment |
| CN112628732A (en) * | 2020-12-24 | 2021-04-09 | 西安交通大学 | Nozzle adjustable low NO suitable for middle-low heat value gasxBurner with a burner head |
| CN113048478A (en) * | 2021-04-01 | 2021-06-29 | 西安交大思源科技股份有限公司 | Low-calorific-value combustible gas cyclone low-nitrogen burner |
-
2019
- 2019-02-22 CN CN201920233065.9U patent/CN209655298U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109724083A (en) * | 2019-02-22 | 2019-05-07 | 西安西热锅炉环保工程有限公司 | A kind of low nitrogen burner of flame profile automatic adjustment |
| CN112628732A (en) * | 2020-12-24 | 2021-04-09 | 西安交通大学 | Nozzle adjustable low NO suitable for middle-low heat value gasxBurner with a burner head |
| CN113048478A (en) * | 2021-04-01 | 2021-06-29 | 西安交大思源科技股份有限公司 | Low-calorific-value combustible gas cyclone low-nitrogen burner |
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