CN206504323U - Combustor nozzle outer shaft - Google Patents
Combustor nozzle outer shaft Download PDFInfo
- Publication number
- CN206504323U CN206504323U CN201720162458.6U CN201720162458U CN206504323U CN 206504323 U CN206504323 U CN 206504323U CN 201720162458 U CN201720162458 U CN 201720162458U CN 206504323 U CN206504323 U CN 206504323U
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- outer shaft
- air channel
- wall
- nozzle
- air
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Abstract
A kind of combustor nozzle outer shaft, the outer surface of the outer shaft is two cylindrical faces, the diameter of the cylindrical face of rear end is less than the diameter of the cylindrical face of front end, space between outer shaft rear end and outer wall is outer shaft stream air channel, the multiple taper grooves of appearance EDS maps of outer shaft front end, when outer shaft front end and outer wall cooperation, the inner surface of outer wall is covered on taper groove, now multiple taper grooves constitute outer shaft stream air channel, and as taper groove extends to nozzle direction, its area of section is gradually reduced.Compared to the prior art, the beneficial effects of the utility model：This outer shaft can change the outlet size for spraying air-flow, and change the direction for spraying air-flow, can preferably adjust the shape jetted out flames so that the random powder of coal dust layer can burn more abundant.
Description
Technical field
The utility model is related to a kind of combustor nozzle outer shaft.
Background technology
In traditional cement production process, mostly using simple single air channel, double air-channel coal powder combustors, these kinds
How black burner duration and degree of heating be long, and efficiency of combustion is low；Develop the eighties, the nineties triple channel, four-way coal burner in succession afterwards,
But still have that air channel structure design is not sufficiently stable its air feed, flame profile temperature is difficult to control, it is impossible to real-time basis
The change of production environment and process conditions is adjusted, it is impossible to adapt to the problem of coal quality is uneven.Telescopic joint is mainly used in mending
The dilatation that pipeline is produced by temperature change is repaid, pipeline is also used for because of the length compensation of the needs such as mounting and adjusting, patent
CN101566342A discloses a kind of gas burner of furnace, has used wavy metal to stretch in the connection of burner and blower fan
Section, is in order to avoid nozzle is given a shock.
Utility model content
In order to solve the technical problem that existing burner nozzle is present, the utility model provides a kind of flame profile adjustment essence
Really, the sufficient combustor nozzle outer shaft of coal dust firing.
The technical solution of the utility model is：
A kind of combustor nozzle outer shaft, the outer surface of the outer shaft is two cylindrical faces, the diameter of the cylindrical face of rear end
Less than the diameter of the cylindrical face of front end, the space between outer shaft rear end and outer wall is outer shaft stream air channel, the outer surface of outer shaft front end
Multiple taper grooves are distributed, when outer shaft front end and outer wall cooperation, the inner surface of outer wall is covered on taper groove, now multiple tapers
Groove constitutes outer shaft stream air channel, and as taper groove extends to nozzle direction, its area of section is gradually reduced.
The cross section of taper groove is that the deferent of circle where semicircle, its cross section is the appearance for being distributed in outer shaft front end
Face straight line.
Compared to the prior art, the beneficial effects of the utility model：This outer shaft can change the outlet size for spraying air-flow, and
And change the direction for spraying air-flow, it can preferably adjust the shape jetted out flames so that the random powder of coal dust layer, which can burn, more to be filled
Point.
Brief description of the drawings
Fig. 1 is the schematic diagram of burner.
Fig. 2 is Fig. 1 schematic top plan view.
Fig. 3 is the schematic diagram of burner.
Fig. 4 is Fig. 3 left view schematic diagram.
Fig. 5 is Fig. 3 diagrammatic cross-section.
Fig. 6 is the schematic diagram on the head of outer spin axis（A is stereogram, and b is front view, and c is top view, and d is profile）.
Fig. 7 is the schematic diagram of outer shaft wind groove（A is stereogram, and b is front view, and c is top view, and d is profile）.
Fig. 8 is the schematic diagram of middle spiral vortex device（A is stereogram, and b is profile, and c is front view）.
Fig. 9 is the enlarged diagram of Fig. 5 nozzle passages.
Embodiment
As shown in Fig. 1-2, a kind of burner includes the air-supply passage 89 and nozzle 80 of connection.
Air-supply passage 89 includes five passages, be followed successively by from the inside to surface fuel injection passage 91, interior air channel I 92, interior air channel II 93,
Coal dust air channel 94 and outer air duct 95.
Nozzle 80 includes five passages, is followed successively by from the inside to surface, jet 11, vortex air channel 12, swirl air duct 13, coal dust
Air channel 14, outer shaft stream air channel 15, five passages according to order from the inside to surface respectively with jet 91, interior air channel I 92, interior wind
Road II 93, coal dust air channel 94, outer air duct 95 are connected.
Nozzle 80 is followed successively by five layers of loop pipe from the inside to surface, is respectively：Spiral vortex device 20, outer spin axis 30, coal dust air channel
Inwall 40, outer shaft 50, outer wall 60.It is jet 11, the space between spiral vortex device 20, outer spin axis 30 in spiral vortex device 20
For vortex air channel 12, space between outer spin axis 30, coal dust air channel inwall 40 is swirl air duct 13, coal dust air channel inwall 40, outer
Space between axle 50 is coal dust air channel 14, and the space between outer shaft 50, outer wall 60 is outer shaft stream air channel 15.
Such as Fig. 8, Fig. 9, the rear end of spiral vortex device 20（Referring to reference 21）For column, its side is fixed multiple parallel
The helical raised 211 of setting, the front end of spiral vortex device 20（Referring to reference 22）To be pre-large post-small round table-like or
Prism-frustum-shaped.Accordingly, vortex air channel 12 is also classified into two parts：Rear portion is the spiral that is formed between adjacent spirals projection 211
Passage（Referring to reference 121）, front portion is circle（Rib）The passage of mesa-shaped.The benefit so designed is：Rear portion can be by advection wind
The mixing ratio of Whirl deposite tank, increase coal stratification of wind and air layer is changed to, increases the combusted proportion of coal stratification of wind；Front portion can pass through spiral vortex
Moved axially between device 20, outer spin axis 30, have adjusted the size of size at vortex ducting outlet（The external diameter inconvenience in exit, it is interior
Footpath can change with axial movement, thus have adjusted the size of size at vortex ducting outlet）, also with regard to air output can be adjusted.
Such as Fig. 6, Fig. 9, the outer surface of outer spin axis 30 is two cylindrical faces, and the diameter of the cylindrical face of rear end is less than the post of front end
The diameter in shape face, the space between the outer rear end of spin axis 30 and coal dust air channel inwall 40 connects interior air channel II 93.The outer front end of spin axis 30
The multiple helicla flutes of appearance EDS maps, when the outer front end of spin axis 30 and coal dust air channel inwall 40 coordinate, coal dust air channel inwall 40
Inner surface is covered on helicla flute, and now multiple helicla flutes constitute swirl air duct 13.The axis of the helicla flute is distributed in outer spin axis
On the outer surface of 30 front ends, as the helicla flute extends to nozzle direction, its area of section is gradually reduced.The section is shaped as
The deferent of circle is distributed on the outer surface of the outer front end of spin axis 30 where semicircle, the cross section of helicla flute.So design
Benefit is：The power that the helicla flute can inwardly be drawn in coal stratification of wind increase, extends the spray penetration of coal stratification of wind, adds coal stratification of wind
With the blending space of air；Meanwhile, when being moved axially between outer spin axis 30 and coal dust air channel inwall 40, the inwall in coal dust air channel
40 ends（It is exactly exit）The area of section of helicla flute follow adjustment, thus have adjusted the exit size of swirl air duct 13
Size and exit wind direction angle（It is exactly the tangential direction and the angle of the outer axial direction of spin axis 30 of the helicla flute）, have adjusted out
Air quantity.
In order to more preferably control flame, the wind direction angle in the exit of swirl air duct 13（Be exactly the helicla flute tangential direction with
The angle of the outer axial direction of spin axis 30）For 30-45 °.
Vortex air channel 12 collectively forms the interior crosswind in coal dust air channel 94 with swirl air duct 13, according to its adjustment, promotes in coal
Stratification of wind increase vortex, extends the mixing ratio of the spray penetration of coal stratification of wind, increase coal stratification of wind and air layer, increases the combustion of coal stratification of wind
Burning ratio.
Vortex air channel 12 is identical with the direction of rotation of swirl air duct 13, and the effect above is more preferable.
It is vortexed air channel 12 opposite with the direction of rotation of outer air duct 95, it is easier to tear up coal stratification of wind, combustion rate is higher.
Such as Fig. 7, Fig. 9, the outer surface of outer shaft 50 is two cylindrical faces, and the diameter of the cylindrical face of rear end is less than the column of front end
The diameter in face, the space between the rear end of outer shaft 50 and outer wall 60 connects outer air duct 95.The appearance EDS maps of the front end of outer shaft 50 are multiple
Taper groove 51, when the front end of outer shaft 50 and the cooperation of outer wall 60, the inner surface of outer wall 60 is covered on taper groove 51, now multiple cones
Shape groove 51 constitutes outer shaft stream air channel 15.As taper groove 51 extends to nozzle direction, its area of section is gradually reduced.Taper groove 51
Cross section be semicircle, the deferent of circle is the outer surface straight line for being distributed in the front end of outer shaft 50 where its cross section.This section
Face is shaped as semicircle.The benefit so designed is：The power that the helicla flute can inwardly be drawn in coal stratification of wind increase, extends coal
The spray penetration of stratification of wind, adds the blending space of coal stratification of wind and air；Meanwhile, moved axially between outer shaft 50 and outer wall 60
When, in the end of outer wall 60（It is exactly exit）The area of section of taper groove 51 follow adjustment, thus have adjusted outer air duct 95
The size of exit size, have adjusted air output.
In order to draw flame in, flame cover 69 is fixed in the end of outer wall 60.
As shown in Figure 1, Figure 2, interior air channel I 92, interior air channel II 93 and outer air duct 95 are respectively communicated with the first winding pipe 82, second entered
Wind branch pipe 83, the 3rd winding pipe 85, the first winding pipe 82, the second winding pipe 83, the 3rd winding pipe 85 all connect into
Wind house steward 87.So design an air inlet fan just.
First winding pipe 82, the second winding pipe 83, the 3rd winding pipe 85 are designed with valve, convenient regulation air intake
Amount.
In order to suspend in midair conveniently, suspension part 88 is fixed on air-supply passage 89.
Air-supply passage 89 and nozzle 80 are connected through a screw thread, and are specially：Air-supply passage 89 is also five-layer structure, and it is right respectively
Spiral vortex device 20, outer spin axis 30, coal dust air channel inwall 40, outer shaft 50, the five-layer structure of outer wall 60 of nozzle 80 are answered, each group
Counter structure junction is fixed for threaded connection.
For convenience between regulation spiral vortex device 20, outer spin axis 30, coal dust air channel inwall 40, outer shaft 50, outer wall 60
Axial distance, between the inside and outside wall in the interior air channel I 92 of air-supply passage 89, between the inside and outside wall in interior air channel II 93, outer air duct 95
Inside and outside wall between be respectively equipped with telescopic joint（Do not drawn in figure）, adjusted by the way that telescopic joint is convenient.
Its work was originally：
As existing five-duct burner operation principle, simply to the outlet chi of the interior outer air duct of coal dust layer at burner
The adjustment that becomes more meticulous has been done in very little and direction, and control flame more facilitates.
Other guide prior art.
Above-described is only preferred embodiment of the present utility model, it is noted that for those skilled in the art
For, under the premise of the utility model general idea is not departed from, some changes and improvements can also be made, these should also be considered as
Protection domain of the present utility model.
Claims (2)
1. a kind of combustor nozzle outer shaft, it is characterised in that：The outer shaft（50）Outer surface be two cylindrical faces, rear end
The diameter of cylindrical face is less than the diameter of the cylindrical face of front end, outer shaft（50）Rear end and outer wall（60）Between space be outer shaft stream wind
Road（15）, outer shaft（50）The multiple taper grooves of appearance EDS maps of front end（51）, work as outer shaft（50）Front end and outer wall（60）During cooperation,
Outer wall（60）Inner surface cover in taper groove（51）Above, now multiple taper grooves（51）Constitute outer shaft stream air channel（15）, with
Taper groove（51）Extend to nozzle direction, its area of section is gradually reduced.
2. combustor nozzle outer shaft as claimed in claim 1, it is characterised in that：Taper groove（51）Cross section be semicircle
The deferent of circle where shape, its cross section is to be distributed in outer shaft（50）The outer surface straight line of front end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720162458.6U CN206504323U (en) | 2017-02-23 | 2017-02-23 | Combustor nozzle outer shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720162458.6U CN206504323U (en) | 2017-02-23 | 2017-02-23 | Combustor nozzle outer shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206504323U true CN206504323U (en) | 2017-09-19 |
Family
ID=59840338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720162458.6U Active CN206504323U (en) | 2017-02-23 | 2017-02-23 | Combustor nozzle outer shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206504323U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111853761A (en) * | 2020-08-03 | 2020-10-30 | 扬州新建水泥技术装备有限公司 | Four-duct pulverized coal burner |
-
2017
- 2017-02-23 CN CN201720162458.6U patent/CN206504323U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111853761A (en) * | 2020-08-03 | 2020-10-30 | 扬州新建水泥技术装备有限公司 | Four-duct pulverized coal burner |
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