CN107166381B - A kind of tangential movable nozzle turbulent burner - Google Patents
A kind of tangential movable nozzle turbulent burner Download PDFInfo
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- CN107166381B CN107166381B CN201710508792.7A CN201710508792A CN107166381B CN 107166381 B CN107166381 B CN 107166381B CN 201710508792 A CN201710508792 A CN 201710508792A CN 107166381 B CN107166381 B CN 107166381B
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- swing angle
- angle control
- nozzle
- fuel nozzle
- control panel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D1/00—Burners for combustion of pulverulent fuel
- F23D1/02—Vortex burners, e.g. for cyclone-type combustion apparatus
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
A kind of tangential movable nozzle turbulent burner, including spreading nozzle, the fuel nozzle being connect with fuel transfer pump, the air lance being connect with airlift mump and the center cooling duct being connect with cooling wind delivery pump, center cooling duct is located in diffusion nozzle, the one end for spreading nozzle is feeding end, the other end is spout end, fuel nozzle swing angle control panel is successively arranged on the cooling duct of center from feeding end to the direction at spout end, air lance swing angle control panel and spout chuck, the spout end of fuel nozzle and air lance is successively adjacent to be mounted in the mounting hole being arranged on spout chuck, the feeding end of fuel nozzle is mounted in the mounting hole being arranged in fuel nozzle swing angle control panel, the feeding end of air lance is mounted in the mounting hole being arranged in air lance swing angle control panel.The present invention changes the incident angle of fuel and air jet by changing the spout incident angle of the fuel nozzle and air lance, reduces gas-flow resistance, reduces the abrasion of component.
Description
Technical field
The present invention relates to field of energy utilization, specifically a kind of tangential movable nozzle turbulent burner.
Background technique
Pulverized coal cyclone burner is the pulverized-coal fired boiler capital equipment using rotation flow impact combustion system, and breeze airflow enters furnace
The arrangement of the form of thorax and each level air-distribution largely affects the kindling of pulverized coal particle, stablizes burning and NOxIt is dirty
Contaminate the generation of object.Mostly use shade type enhanced ignition-dual register burner both at home and abroad at present, primary wind and powder is deep or light by inertial separation
Two strands of air-flows, Secondary Air be it is double adjust wind structures, be divided into two strands inside and outside, high temperature gases recirculating can be changed by adjusting swirl strength
Mixing between the size in area, position and each stock wind.This combustion system make burner have very strong coal adaptability with
And low-load combustion-stabilizing ability, but still thering are some problems to reflect in actual application, technology current first is in coal dust gas
It is mostly level-one inertial separation on the air-coal separating of stream, gained coal powder density rich-lean ratio is usually less than 2.5, dense for unburnable coal
Phase side fails to form sufficiently high fuel concentration, thus influences effective foundation of " San Gaoqu "；Secondly current technology is in First air
It is eddy flow inner second air on the outside of powder spout, may cause the too early mixing of First air Secondary Air, to influence breeze airflow
Kindling and NOxThe inhibition that pollutant generates.
The performance of burner has a great impact to the stability and economy of burning.One burner of good performance can
With highly organized aerodynamic field, fuel is mixed well with air, guarantees the stability and economy of burning；It adapts to each
Kind different fuel, ability and biggish adjustable range with regulation performance are to adapt to the variation of fuel and load；It can
Control NOxGeneration；It is reliable for operation, it is not easy to wear.
Summary of the invention
The present invention provides a kind of tangential movable nozzle turbulent burner, which may be implemented the rotation of fuel and air air-flow
Transhipment is dynamic, and interior recirculating zone is generated inside rotating jet, and volume inhales high ambient temperatures flue gas, guarantees that fuel and air are sufficiently mixed, surely
Determine fuel gas stream kindling, reduces the flow resistance of fuel and air, and the difference of fuel and air jet stream swing angle may be implemented
Control changes Central backflow area size to adapt to the fuel of different kindling complexities, and center cooling wind can also inhibit to catch fire
Stage NOxGeneration.
The technical solution that the present invention uses to solve above-mentioned technical problem are as follows: a kind of tangential movable nozzle turbulent burner,
Including diffusion nozzle, the fuel nozzle being connect with fuel transfer pump, the air lance that is connect with airlift mump and with cooling
The center cooling duct of wind delivery pump connection, center cooling duct are located in diffusion nozzle, and the one end for spreading nozzle is feeding end,
The other end for spreading nozzle is spout end, spreads and offers ignition burner installation hole, center cooling duct on the spout end of nozzle
On fuel nozzle swing angle control panel, air lance swing angle control panel and spout are successively arranged with from feeding end to the direction at spout end
The spout end of chuck, fuel nozzle is mounted in the mounting hole being arranged on spout chuck, and the feeding end of fuel nozzle is mounted on combustion
In the mounting hole being arranged in material jet pipe swing angle control panel；The spout end of air lance is mounted on the mounting hole being arranged on spout chuck
In, the feeding end of air lance is mounted in the mounting hole being arranged in air lance swing angle control panel；
Wherein, fuel nozzle swing angle control panel and air lance swing angle control panel are rotatably installed on the cooling duct of center,
Spout chuck is fixedly mounted on the inner wall of diffusion nozzle, is controlled by rotation fuel nozzle swing angle control panel and air lance swing angle
Disk, and then fuel nozzle and air lance are adjusted in the spout incident angle of diffusion nozzle feeding end.
As a preferred embodiment, the outer peripheral surface of fuel nozzle swing angle control panel is equipped with fuel nozzle swing angle control-rod,
Fuel nozzle swing angle control-rod passes through the fuel nozzle swing angle limiting groove being provided on diffusion internal wall of pipe orifice；Air lance swing angle control
One outer peripheral surface of disk processed is equipped with air lance swing angle control-rod, and air lance swing angle control-rod passes through setting in diffusion nozzle
Air lance swing angle limiting groove；By rotating fuel nozzle swing angle control-rod, air lance swing angle control-rod, make fuel nozzle
Swing angle control-rod rotates in the range of fuel nozzle swing angle limiting groove limits, and air lance swing angle control-rod is revolved in air lance
It is rotated in the range of the limitation of angle limiting groove.
As a preferred embodiment, the fuel nozzle swing angle control panel and air lance swing angle control panel are round control
Disk processed, and multiple arcs notch is evenly equipped on each circular control plate, so that circular control plate outer rim forms multiple installation ends.
As a preferred embodiment, uniformly distributed on each circular control plate there are four arc notch, so that circular control plate outer rim
Four installation ends are formed, each installation end correspondence in fuel nozzle swing angle control panel and air lance swing angle control panel is evenly equipped with confession
The mounting hole that fuel nozzle and air lance pass through, the installation in fuel nozzle swing angle control panel and air lance swing angle control panel
Hole mutually staggers 45 °.
As a preferred embodiment, it is equipped with positioned at the end of the center cooling duct at diffusion nozzle spout end and expands flow cone.
As a preferred embodiment, the fuel nozzle swing angle control-rod is welded in fuel nozzle swing angle control panel, institute
Air lance swing angle control-rod is stated to be welded in air lance swing angle control panel.
As a preferred embodiment, the center cooling duct positioned at diffusion nozzle feeding end is equipped with external screw thread, fuel spray
The center of pipe swing angle control panel and air lance swing angle control panel is equipped with to be cooperatively connected with the external screw thread on the cooling duct of center
Internal screw thread.
Compared with prior art, the invention has the following advantages:
(1) the present invention provides a kind of tangential movable nozzle turbulent burner, which may be implemented fuel and air gas
Rotary motion is flowed, interior recirculating zone is generated inside rotating jet, volume inhales high ambient temperatures flue gas, guarantees that fuel and air are sufficiently mixed
It closes, the kindling of steady fuel air-flow reduces the flow resistance of fuel and air, and fuel and air jet stream swing angle may be implemented
It controls respectively, changes Central backflow area size to adapt to the fuel of different kindling complexities, center cooling wind can also inhibit
Kindling stage NOxGeneration；
(2) the present invention provides a kind of tangential movable nozzle turbulent burners, by changing the fuel nozzle and air
The spout incident angle of jet pipe changes the incident angle of fuel and air jet, compares vane type and scroll casing type swirl flow combustion
Device reduces gas-flow resistance, reduces the abrasion of component；
(3) the present invention provides a kind of tangential movable nozzle turbulent burner, fuel nozzle swing angle limiting groove and air sprays
Pipe swing angle limiting groove can limit the rotation angle of fuel nozzle and air lance, so that the swirl strength of fuel and air air-flow
It is unlikely to excessive and causes flame overlap, makes furnace wall or water-cooling wall slagging, it can also be to avoid jet pipe because swing angle is excessive and jet pipe swing angle
Control panel collides；
(4) the present invention provides a kind of tangential movable nozzle turbulent burners, by adjusting separately fuel nozzle and air
The spout incident angle of jet pipe, cooperation center cooling duct change the power of center cooling wind, may be implemented to adjust separately fuel
With the swirl strength of air jet, change the size of interior recirculating zone, adapts to the fuel of different kindling complexities, adjust flame temperature
Degree reduces NOxDischarge；
(5) in the present invention, the spout end of center cooling duct, which is equipped with, expands flow cone, and the recirculating zone for expanding flow cone tail helps to fire
The kindling for expecting air-flow, mixes well with air fuel, guarantees the stability and economy of burning.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention；
Fig. 2 be Fig. 1 in fuel nozzle swing angle limiting groove, air lance swing angle limiting groove, fuel nozzle swing angle control-rod and
Air lance swing angle control-rod fit structure right view；
Appended drawing reference: 1, fuel nozzle swing angle control-rod, 2, air lance swing angle control-rod, 3, center cooling duct, 4,
Fuel nozzle, 5, fuel nozzle swing angle control panel, 6, air lance, 7, air lance swing angle control panel, 8, diffusion nozzle, 9, spray
Mouth chuck, 10, expansion flow cone, 11, ignition burner installation hole, 12, fuel nozzle swing angle limiting groove, 13, the limitation of air lance swing angle
Slot.
Specific embodiment
It elaborates with reference to the accompanying drawing to the embodiment of the present invention, before the present embodiment is with technical solution of the present invention
It mentions, the detailed implementation method and specific operation process are given, but protection scope of the present invention is not limited to following embodiments.
As shown in Figure 1, a kind of tangential movable nozzle turbulent burner, connect including diffusion nozzle 8, with fuel transfer pump
Fuel nozzle 4, the air lance 6 being connect with airlift mump and the center cooling duct 3 being connect with cooling wind delivery pump, in
Heart cooling duct 3 is located in diffusion nozzle 8, and one end of diffusion nozzle 8 is feeding end, and the other end of diffusion nozzle 8 is spout end,
It spreads and offers ignition burner installation hole 11 on the spout end of nozzle 8, from feeding end to the side at spout end on center cooling duct 3
To being successively arranged with fuel nozzle swing angle control panel 5, air lance swing angle control panel 7 and spout chuck 9, the spray of fuel nozzle 4
Mouth end is mounted in the mounting hole being arranged on spout chuck 9, and the feeding end of fuel nozzle 4 is mounted on fuel nozzle swing angle control panel
In the mounting hole being arranged on 5；The spout end of air lance 6 is mounted in the mounting hole being arranged on spout chuck 9, air lance 6
Feeding end be mounted in the mounting hole being arranged in air lance swing angle control panel 7；Preferably, the spout of fuel nozzle 4
End is mounted in the mounting hole being arranged on spout chuck 9 by oscillating bearing, and the feeding end of fuel nozzle 4 is pacified by oscillating bearing
In the mounting hole being arranged in fuel nozzle swing angle control panel 5；The spout end of air lance 6 is mounted on spray by oscillating bearing
In the mounting hole being arranged on mouth chuck 9, the feeding end of air lance 6 is mounted on air lance swing angle control panel by oscillating bearing
In the mounting hole being arranged on 7；Oscillating bearing described herein is spherical joint bearing, and the mode that is coupled is the prior art,
This will not be repeated here.The center of circle for the mounting hole being arranged on spout chuck 9 is located on same circumference, air lance swing angle control panel 7
The center of circle of the mounting hole of upper setting is located on same circumference, the center of circle position for the mounting hole being arranged in fuel nozzle swing angle control panel 5
In on same circumference.
Wherein, fuel nozzle swing angle control panel 5 and air lance swing angle control panel 7 are rotatably installed in center cooling duct 3
On, spout chuck 9 is fixedly mounted on the inner wall of diffusion nozzle 8, is revolved by rotation fuel nozzle swing angle control panel 5 and air lance
Angle control panel 7, and then fuel nozzle 4 and air lance 6 are adjusted in the spout incident angle of diffusion 8 feeding end of nozzle.
The above are basic embodiments of the invention, can be improved further, optimize or limit on the basis of above.
Further, the outer peripheral surface of fuel nozzle swing angle control panel 5 is equipped with fuel nozzle swing angle control-rod 1, fuel spray
Pipe swing angle control-rod 1 passes through the fuel nozzle swing angle limiting groove 12 being provided on diffusion 8 inner wall of nozzle；The control of air lance swing angle
One outer peripheral surface of disk 7 is equipped with air lance swing angle control-rod 2, and air lance swing angle control-rod 2 passes through setting in diffusion nozzle 8
Interior air lance swing angle limiting groove 13；By rotating fuel nozzle swing angle control-rod 1, air lance swing angle control-rod 2, make to fire
Material jet pipe swing angle control-rod 1 rotates in the range of fuel nozzle swing angle limiting groove 12 limits, and air lance swing angle control-rod 2 exists
Air lance swing angle limiting groove 13 rotates in the range of limiting.Wherein, fuel nozzle swing angle limiting groove 12 and air lance swing angle
The setting of the length of limiting groove 13, when rotating fuel nozzle swing angle control panel 5 and air lance swing angle control panel 7, avoid because
Air lance swing angle control panel 7 caused by swing angle is excessive collides with fuel nozzle 4.At the same time it can also limit fuel nozzle 4
It in turn results in flame so that the swirl strength of fuel and air air-flow is unlikely to excessive with the rotation angle of air lance 6 and flies
Side causes furnace wall or water-cooling wall the defect of slagging occur.
Further, the fuel nozzle swing angle control panel 5 and air lance swing angle control panel 7 are circular control plate,
And multiple arcs notch is evenly equipped on each circular control plate, so that circular control plate outer rim forms multiple installation ends, circle control
The setting of arc notch on disk reserves rotation space to fuel nozzle and air lance.
It is further, uniformly distributed on each circular control plate that there are four arc notch, fuel nozzle swing angle control panel 5 and air sprays
Each installation end in pipe swing angle control panel 7, which corresponds to, is evenly equipped with the mounting hole passed through for fuel nozzle 4 and air lance 6, fuel spray
Mounting hole in pipe swing angle control panel 5 and air lance swing angle control panel 7 mutually staggers 45 °.As shown in Fig. 2, fuel nozzle revolves
Angle control panel 5, air lance swing angle control panel 7 and spout chuck 9 are arranged concentrically, fuel nozzle swing angle control panel 5 and air spray
Angle in pipe swing angle control panel 7 between each adjacent two mounting hole is 45 °.In addition it is also possible on each circular control plate
Five arc notch of cloth, the i.e. shape of fuel nozzle swing angle control panel 5 and air lance swing angle control panel 7 are five notches of band
It is star-like, at this point, the mounting hole in fuel nozzle swing angle control panel 5 and air lance swing angle control panel 7 mutually staggers 36 °, controlling
Uniformly distributed arc notch, can mitigate the weight of control panel on disk processed.
Further, it is equipped with positioned at the end of the center cooling duct 3 at diffusion 8 spout end of nozzle and expands flow cone 10.
Further, the fuel nozzle swing angle control-rod 1 is welded in fuel nozzle swing angle control panel 5, the air
Jet pipe swing angle control-rod 2 is welded in air lance swing angle control panel 7.
Further, the center cooling duct 3 positioned at diffusion 8 feeding end of nozzle is equipped with external screw thread, fuel nozzle swing angle
The center of control panel 5 and air lance swing angle control panel 7 be equipped with on center cooling duct 3 external screw thread be cooperatively connected in
Screw thread.
Claims (8)
- Including diffusion nozzle (8), the fuel nozzle that is connect with fuel transfer pump 1. a kind of tangential movable nozzle turbulent burner (4), the air lance (6) being connect with airlift mump and the center cooling duct (3) being connect with cooling wind delivery pump, center Cooling duct (3) is located in diffusion nozzle (8), and one end of diffusion nozzle (8) is feeding end, and the other end of diffusion nozzle (8) is Spout end spreads and offers ignition burner installation hole (11) on the spout end of nozzle (8), it is characterised in that: center cooling duct (3) fuel nozzle swing angle control panel (5), air lance swing angle control panel are successively arranged on from feeding end to the direction at spout end (7) and spout chuck (9), the spout end of fuel nozzle (4) is rotatably assorted the mounting hole for being mounted on and being arranged on spout chuck (9) In, the feeding end of fuel nozzle (4) is rotatably assorted in the mounting hole for being mounted on and being arranged in fuel nozzle swing angle control panel (5)；It is empty The spout end of gas blowout pipe (6) is rotatably assorted in the mounting hole for being mounted on and being arranged on spout chuck (9), the pan feeding of air lance (6) End is rotatably assorted in the mounting hole for being mounted on and being arranged in air lance swing angle control panel (7)；Wherein, fuel nozzle swing angle control panel (5) and air lance swing angle control panel (7) are rotatably installed in center cooling duct (3) on, spout chuck (9) be fixedly mounted on diffusion nozzle (8) inner wall, by rotation fuel nozzle swing angle control panel (5) and Air lance swing angle control panel (7), and then fuel nozzle (4) and air lance (6) are adjusted in the spray of diffusion nozzle (8) feeding end Mouth incident angle.
- 2. a kind of tangential movable nozzle turbulent burner according to claim 1, it is characterised in that: fuel nozzle swing angle control The outer peripheral surface of disk (5) processed is equipped with fuel nozzle swing angle control-rod (1), and fuel nozzle swing angle control-rod (1) passes through and is provided with expansion Fuel nozzle swing angle limiting groove (12) on separate tube mouth (8) inner wall；One outer peripheral surface of air lance swing angle control panel (7) is equipped with Air lance swing angle control-rod (2), air lance swing angle control-rod (2) pass through air lance of the setting in diffusion nozzle (8) Swing angle limiting groove (13)；By rotating fuel nozzle swing angle control-rod (1), air lance swing angle control-rod (2), make fuel nozzle Swing angle control-rod (1) rotates in the range of fuel nozzle swing angle limiting groove (12) limits, and air lance swing angle control-rod (2) exists It is rotated in the range of air lance swing angle limiting groove (13) limitation.
- 3. a kind of tangential movable nozzle turbulent burner according to claim 1, it is characterised in that: the fuel nozzle rotation Angle control panel (5) and air lance swing angle control panel (7) are circular control plate, and multiple arcs are evenly equipped on each circular control plate V notch v, so that circular control plate outer rim forms multiple installation ends.
- 4. a kind of tangential movable nozzle turbulent burner according to claim 3, it is characterised in that: on each circular control plate Uniformly distributed there are four arc notch, so that circular control plate outer rim forms four installation ends, fuel nozzle swing angle control panel (5) and sky Each installation end correspondence in gas blowout pipe swing angle control panel (7) is evenly equipped with the installation passed through for fuel nozzle (4) and air lance (6) Hole, the mounting hole in fuel nozzle swing angle control panel (5) and air lance swing angle control panel (7) mutually stagger 45 °.
- 5. a kind of tangential movable nozzle turbulent burner according to claim 1, it is characterised in that: be located at diffusion nozzle (8) end of the center cooling duct (3) at spout end, which is equipped with, expands flow cone (10).
- 6. a kind of tangential movable nozzle turbulent burner according to claim 2, it is characterised in that: the fuel nozzle rotation Angle control-rod (1) is welded in fuel nozzle swing angle control panel (5), and the air lance swing angle control-rod (2) is welded on air In jet pipe swing angle control panel (7).
- 7. a kind of tangential movable nozzle turbulent burner according to claim 1, it is characterised in that: be located at diffusion nozzle (8) the center cooling duct (3) of feeding end is equipped with external screw thread, fuel nozzle swing angle control panel (5) and air lance swing angle control The center of disk (7) processed is equipped with the internal screw thread being cooperatively connected with the external screw thread on center cooling duct (3).
- 8. a kind of tangential movable nozzle turbulent burner according to claim 1, it is characterised in that: fuel nozzle (4) Spout end is mounted in the mounting hole on spout chuck (9) by oscillating bearing, and the feeding end of fuel nozzle (4) passes through joint shaft It holds in the mounting hole being mounted in fuel nozzle swing angle control panel (5)；It is installed by oscillating bearing at the spout end of air lance (6) In the mounting hole on spout chuck (9), the feeding end of air lance (6) is mounted on air lance swing angle control by oscillating bearing In mounting hole on disk (7) processed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710508792.7A CN107166381B (en) | 2017-06-28 | 2017-06-28 | A kind of tangential movable nozzle turbulent burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710508792.7A CN107166381B (en) | 2017-06-28 | 2017-06-28 | A kind of tangential movable nozzle turbulent burner |
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| Publication Number | Publication Date |
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| CN107166381A CN107166381A (en) | 2017-09-15 |
| CN107166381B true CN107166381B (en) | 2018-12-11 |
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| CN201710508792.7A Active CN107166381B (en) | 2017-06-28 | 2017-06-28 | A kind of tangential movable nozzle turbulent burner |
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Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202561738U (en) * | 2012-05-16 | 2012-11-28 | 神华集团有限责任公司 | Tangential cyclone air inlet mechanism for pulverized coal burner |
| CN103017162A (en) * | 2012-12-28 | 2013-04-03 | 北京哈宜节能环保科技开发有限公司 | Spray pipe of burner and burner |
| CN203771395U (en) * | 2014-02-25 | 2014-08-13 | 中国建筑材料科学研究总院 | Oxygen-enriched and low-NOx pulverized coal burner and dedicated spray nozzle |
| KR101721057B1 (en) * | 2015-06-18 | 2017-03-29 | 한국생산기술연구원 | Burner swirl intensity control apparatus and method for controlling the intensity |
| CN205119057U (en) * | 2015-08-26 | 2016-03-30 | 清华大学 | Nitrogen gas burner is thoughtlessly hanged down in advance to percussion flow part |
| CN205480976U (en) * | 2016-01-27 | 2016-08-17 | 北京泷涛环境科技有限公司 | Hierarchical ultralow nitrogen gas burner of strong whirl fuel |
| CN106524152B (en) * | 2016-11-28 | 2018-11-27 | 北京水木星源环保科技有限公司 | A kind of classification combustion gas low NO |
| CN206247331U (en) * | 2016-11-28 | 2017-06-13 | 北京水木星源环保科技有限公司 | One kind classification combustion gas low NO |
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- 2017-06-28 CN CN201710508792.7A patent/CN107166381B/en active Active
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