CN207365101U - The burner of fuel nozzle and gas turbine - Google Patents
The burner of fuel nozzle and gas turbine Download PDFInfo
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- CN207365101U CN207365101U CN201721135164.0U CN201721135164U CN207365101U CN 207365101 U CN207365101 U CN 207365101U CN 201721135164 U CN201721135164 U CN 201721135164U CN 207365101 U CN207365101 U CN 207365101U
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- cyclone
- inner cylinder
- centerbody
- fuel nozzle
- outside
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Abstract
The utility model discloses a kind of fuel nozzle and the burner of gas turbine, the fuel nozzle includes centerbody, shroud, inner cylinder, outside cyclone and inner side cyclone, the shroud is sleeved on outside the centerbody, and circular passage is formed between the shroud and the centerbody；Inner cylinder, the inner cylinder has inlet end and an outlet end, the inner cylinder is arranged in the circular passage so that the circular passage to be divided into the interior annular passage between the exterior annular passage between the inner cylinder and the shroud and the inner cylinder and the centerbody, and the port of export of the inner cylinder is ripple valvular structure；The outside cyclone is located in the exterior annular passage, and the inner side cyclone is located in the interior annular passage.The mixing effect of the utility model fuel and air is good, beneficial to the discharge for reducing pollutant, can effectively reduce tempering risk, avoids the problem of easily damaging fuel nozzle caused by directly substituting cyclone using lobe structure.
Description
Technical field
Gas turbine technology field is the utility model is related to, more particularly to the burning of a kind of fuel nozzle and gas turbine
Device.
Background technology
In gas turbine, air is compressed into pressure-air through compressor and enters from diffuser in combustion chamber, in chamber head
Portion enters the nozzle of head of combustion chamber after turning back, mixed in nozzle with fuel, subsequently into flame cylinder roasting.So
And air mixes uneven, the easily pollutant emission such as increase NOx with fuel in nozzle, increase partial flame spread speed,
So as to bring the flame-out equivalent risk of tempering.
In correlation technique, existing cyclone is substituted using lobe structure in fuel nozzle, it is integrated with eddy flow and enhancing
The effect of air and fuel blending.However, easily there is low-speed region in lobe structure in above-mentioned fuel nozzle, once occur back
Fire, whole fuel nozzle are easily destroyed in a short time.
Utility model content
The utility model is intended to solve at least some of the technical problems in related technologies.
For this reason, on the one hand the utility model is directed to a kind of fuel nozzle, the mixing effect of its fuel and air is good, profit
In the discharge for reducing pollutant, tempering risk can be effectively reduced, avoids and is directly caused using lobe structure replacement cyclone
Easy the problem of damaging fuel nozzle.
On the other hand the utility model also proposes a kind of burner of gas turbine.
Included according to the fuel nozzle of the embodiment of the utility model one side：Centerbody；Shroud, the shroud are sleeved on institute
State outside centerbody, circular passage is formed between the shroud and the centerbody；Inner cylinder, the inner cylinder have input end and go out
Mouth end, the inner cylinder are arranged in the circular passage outer between the inner cylinder and the shroud the circular passage to be divided into
Interior annular passage between side circular passage and the inner cylinder and the centerbody, the port of export of the inner cylinder is lobe shape knot
Structure；Outside cyclone and inner side cyclone, the outside cyclone are located in the exterior annular passage, the inner side cyclone
It is located in the interior annular passage.
Fuel nozzle according to the present utility model, is divided into outside by inner cylinder by the circular passage between centerbody and shroud
Inner side cyclone and outer sidespin are respectively equipped with circular passage and interior annular passage, interior annular passage and exterior annular passage
Flow device, and the port of export of inner cylinder be ripple valvular structure, can effectively fuel blend and air, beneficial to the row of reduction pollutant
Put, reduce tempering risk, avoid the problem of easily damaging fuel nozzle caused by directly substituting cyclone using lobe structure.
In certain embodiments, the outside cyclone is different with the eddy flow angle of the inner side cyclone.
In certain embodiments, the outside cyclone is different with the eddy flow direction of the inner side cyclone.
In certain embodiments, the outside cyclone and the inner side cyclone are respectively provided with jet hole, the outer sidespin
The jet hole for flowing device is different from the aperture of the jet hole of the inner side cyclone.
In certain embodiments, one end corresponding with the port of export of the inner cylinder of the centerbody is tapered.
In certain embodiments, one end corresponding with the port of export of the inner cylinder of the centerbody is in truncated cone shape.
In certain embodiments, one end of the truncated cone shape of the centerbody is equipped with fuel channel on duty.
In certain embodiments, fuel channel, the fuel channel and the outside cyclone are equipped with the centerbody
Connected with the inner side cyclone.
In certain embodiments, one end corresponding with the input end of the inner cylinder of the centerbody is equipped with mounting flange.
According to the burner of the gas turbine of the utility model another aspect, it includes the fuel nozzle of above-described embodiment.
Brief description of the drawings
Fig. 1 is the longitudinal section of the fuel nozzle of embodiment according to the present utility model；
Fig. 2 is the overall structure figure of the fuel nozzle of embodiment according to the present utility model；
Fig. 3 is the cross-sectional view of the fuel nozzle of embodiment according to the present utility model.
Reference numeral：
Centerbody 1, shroud 2, inner cylinder 3, the input end 31 of inner cylinder 3, the port of export 32 of inner cylinder 3, circular passage 4, outer side ring
Shape passage 41, interior annular passage 42, cyclone 5, outside cyclone 5, inner side cyclone 6, jet hole 7, fuel channel 8, peace
Fill flange 9, fuel 10, air 11.
Embodiment
The embodiment of the utility model is described below in detail, the example of the embodiment is shown in the drawings.Below by
The embodiment being described with reference to the drawings is exemplary, it is intended to for explaining the utility model, and it is not intended that new to this practicality
The limitation of type.
As shown in Figs. 1-3, centerbody 1, shroud 2, inner cylinder 3, outer is included according to the fuel nozzle of the utility model embodiment
Side cyclone 5 and inner side cyclone 6.
Shroud 2 is sleeved on centerbody 1 and is diametrically spaced apart each other, so as to form ring between shroud 2 and centerbody 1
Shape passage 4.
Inner cylinder 3 has input end 31 and the port of export 32, such as shown in Fig. 1, fuel 10 and air 11 be from bottom to top into
Enter, then the lower end of inner cylinder 3 is input end 31, and upper end is the port of export 32.Inner cylinder 3 is arranged in circular passage 4 so that circular passage 4 to be divided
For exterior annular passage 41 and interior annular passage 42, exterior annular passage 41 is formed between inner cylinder 3 and shroud 2, interior side ring
Shape passage 42 is formed between inner cylinder 3 and centerbody 1.In other words, as shown in Figure 1, inner cylinder 3 is located in circular passage 4 and along set
Cover 2 axial direction extension, and inner cylinder 3 respectively with centerbody 1 and shroud 2 radially (such as above-below direction shown in Fig. 1)
It is spaced apart, exterior annular passage 41 and inner cylinder 3 and the center circular passage 4 being diametrically divided between inner cylinder 3 and shroud 2
Interior annular passage 42 between body 1.
The port of export 32 (upper end as shown in Figure 1) of inner cylinder 3 is ripple valvular structure, it is to be understood that the upper end of inner cylinder 3
Edge there is fold to form ripple valvular structure, such as Fig. 2, shown in 3, fold can be formed in the upper end-face edge of inner cylinder 3
To form the cirque structure of whole lobe shape on one whole circle.Fuel in exterior annular passage 41 and interior annular passage 42
10 and the pre-blended mixture of air 11 eddy flow drop out effects carried out by the ripple valvular structure of 3 port of export 32 of inner cylinder further mix
It is mixed, to improve mixing uniformity.
Outside cyclone 5 and inner side cyclone 6, outside cyclone 5 are located in exterior annular passage 41, inner side cyclone 6
It is located in interior annular passage 6.In other words, outside cyclone 5 is set between inner cylinder 3 and shroud 2, and inner side cyclone 6 is located at inner cylinder 3
Between centerbody 1.By outside cyclone 5 and inner side cyclone 6, circular passage 41 and interior side ring laterally can be distinguished
42 spray fuel of shape passage, to be mixed respectively with the air in exterior annular passage 41 and interior annular passage 42.It is appreciated that
, due to being respectively equipped with cyclone in exterior annular passage 41 and interior annular passage 42, can be controlled according to being actually needed
Cyclone in different circular passages, for example, the cyclone mode of outside cyclone 5 and inner side cyclone 6 can be controlled respectively, rotation
Flow angle, eddy flow direction etc. reduces pollutant emission to improve the mixing effect of fuel and air.
Fuel nozzle according to the present utility model, is layered circular passage by inner cylinder, exterior annular passage and interior
It is equipped with cyclone in the circular passage of side, and the port of export of inner cylinder is arranged to ripple valvular structure, nozzle fuel and air
Mixing effect is good, beneficial to the discharge for reducing pollutant, can effectively reduce tempering risk, avoid and directly replaced using lobe structure
The problem of for fuel nozzle is easily damaged caused by cyclone.
In certain embodiments, the eddy flow angle of the inner side cyclone 6 of the outside cyclone 5 of cyclone 5 and cyclone 5 is not
Together., can be with by controlling the eddy flow angle of outside cyclone 5 that cyclone 5 is radially divided into and inner side cyclone 6 respectively
The mixing effect of fuel and air is improved, shortens blending distance, reduces tempering risk.It is understood that 5 He of outside cyclone
The eddy flow angle of inner side cyclone 6 can be the same or different, and be made choice according to actual needs.
In certain embodiments, outside cyclone 5 is different with the eddy flow direction of inner side cyclone 6.By controlling rotation respectively
The eddy flow direction of the outside cyclone 5 that is radially divided into of stream device 5 and inner side cyclone 6, can improve fuel and air
Mixing effect, further shortens blending distance, reduces tempering risk.It is understood that outside cyclone 5 and inner side cyclone
6 eddy flow direction can be the same or different, and be made choice according to actual needs.
In certain embodiments, jet hole 7 is equipped with outside cyclone 5 and inner side cyclone 6, in order to by fuel 10
Injection in exterior annular passage 41 and in interior annular passage 42 with exterior annular passage 41 is interior and interior annular passage 42
Interior air 11 mixes.It is understood that jet hole 7 is respectively equipped with outside cyclone 5 and inner side cyclone 6, with respectively
Easy to which fuel 10 is ejected into exterior annular passage 41 and in interior annular passage 42.Further, outside jet hole 71
It is different from the aperture of inner side jet hole 72.Penetrated by controlling respectively on the jet hole 7 and inner side cyclone 6 on the cyclone 5 of outside
The aperture of discharge orifice 7, can control the emitted dose of different circular passage fuels 10, so as to control the premix of fuel 10 and air 11
The equivalent proportion of mixture, further controls downstream flame front shape to control DS NOx Est.
In certain embodiments, centerbody 1 is tapered with 32 corresponding one end of the port of export of inner cylinder 3.In other words, as schemed
Shown in 1, the upper end of centerbody 1 is corresponding with the port of export (upper end) 32 of centerbody 1, and the radial dimension of the upper end of centerbody 1 is under
It is gradually reduced upwards to form taper.In other optional embodiments, the upper end of centerbody 1 is in truncated cone shape.Further
Ground, the top of the truncated cone shape of centerbody 1 is equipped with fuel channel (not shown) on duty, to reduce tempering risk.It is appreciated that
, the upper end shape of centerbody 1 is not limited to this, can be specifically chosen in favor of the injection of fuel according to being actually needed.
In certain embodiments, for the ease of supplying fuel into cyclone 5, centerbody 1 is equipped with fuel channel 8, combustion
Material passage 8 is connected with outside cyclone 5 and inner side cyclone 6, so that cyclone 5 and inner side cyclone 6 supply laterally respectively
It should burn and be injected fuel into by respective jet hole 7 in corresponding circular passage.More specifically, as shown in Figure 1, fuel
Passage 8 is arranged on the center of centerbody 1 and is connected with outside cyclone 5 and inner side cyclone 6.
In certain embodiments, centerbody 1 with 31 corresponding one end of input end of inner cylinder 3 is equipped with mounting flange 9.Change speech
It, as shown in Fig. 2, the upper end of centerbody 1 is located at the inner side of shroud 2, the lower end of centerbody 1 be located on the outside of shroud 2 and centerbody 1
Lower end is corresponding with the input end 31 of inner cylinder 3, and the lower end of centerbody 1 is equipped with mounting flange 9, in order to which fuel nozzle is installed on
In the burner of gas turbine.
Fuel nozzle below with reference to Fig. 1 and Fig. 2 descriptions according to the utility model specific embodiment.
As shown in Figs. 1-2, centerbody 1, shroud 2, inner cylinder 3, outer is included according to the fuel nozzle of the utility model embodiment
Side cyclone 5, inner side cyclone 6 and mounting flange 9.Centerbody 1, shroud 2 and inner cylinder 3 set coaxially to each other and three it is transversal
Face is circular ring shape.
Shroud 2 is sleeved on the outside of centerbody 1 and is diametrically spaced apart each other, so as to be formed between shroud 2 and centerbody 1
Circular passage 4.
Inner cylinder 3 is located in circular passage 4 and extends from the lower end of shroud 2 to the upper end of shroud 2, inner cylinder 3 respectively with center
Body 1 and shroud 2 are spaced radially apart, and circular passage 4 is divided for exterior annular passage 41 and interior annular passage 42, outer side ring
Shape passage 41 is formed between inner cylinder 3 and shroud 2, and interior annular passage 42 is formed between inner cylinder 3 and centerbody 1.
Outside cyclone 5 and inner side cyclone 6, outside cyclone 5 and inner side cyclone 6 are located at exterior annular passage respectively
41 and interior annular passage 42 in and positioned at close to inner cylinder 3 input end (lower end) 31 position, inner cylinder 3 the port of export (on
End) 32 it is ripple valvular structure.The premix gas of fuel 10 and air 11 in exterior annular passage 41 and exterior annular passage 42 leads to
The eddy flow drop out effects for crossing ripple valvular structure further blend, to improve mixing uniformity.
It is equipped with jet hole 7 on outside cyclone 5 and inner side cyclone 6, the outside jet hole 7 of outside cyclone 5 and interior
The aperture of the inner side jet hole 7 of side cyclone 6 is different.By controlling jet hole 7 and inner side eddy flow on the cyclone 5 of outside respectively
The aperture of jet hole 7 on device 6, can control the emitted dose of different circular passage fuels 10, so as to control fuel 10 and air
The equivalent proportion of 11 pre-blended mixture, further controls downstream flame front shape to control DS NOx Est.
The center of centerbody 1 is equipped with fuel channel 8, and 8 outside cyclone 5 of fuel channel is connected with inner side cyclone 6, with
Easy to supply fuel 10 in cyclone 5 laterally and inner side cyclone 6.The upper end of centerbody 1 is located in shroud 2 and tapered,
In favor of spray fuel 10, the lower end of centerbody 1 is located at the outside of shroud 2 and is equipped with mounting flange 9, in order to which fuel nozzle is pacified
Loaded in the burner of gas turbine.
According to the burner of the gas turbine of the utility model another aspect, it includes the fuel nozzle of above-described embodiment.
Although the embodiment of the utility model has been shown and described above, it is to be understood that above-described embodiment is
Exemplary, it is impossible to the limitation to the utility model is interpreted as, those of ordinary skill in the art are in the scope of the utility model
It is interior above-described embodiment to be changed, changed, replaced and modification.
Claims (10)
- A kind of 1. fuel nozzle, it is characterised in that including：Centerbody；Shroud, the shroud are sleeved on outside the centerbody, and circular passage is formed between the shroud and the centerbody；Inner cylinder, the inner cylinder have inlet end and an outlet end, and the inner cylinder is arranged in the circular passage so that the annular is logical Road is divided into the interior side ring between the exterior annular passage between the inner cylinder and the shroud and the inner cylinder and the centerbody Shape passage, the port of export of the inner cylinder is ripple valvular structure；Outside cyclone and inner side cyclone, the outside cyclone are located in the exterior annular passage, the inner side eddy flow Device is located in the interior annular passage.
- 2. fuel nozzle according to claim 1, it is characterised in that the outside cyclone and the inner side cyclone Eddy flow angle is different.
- 3. fuel nozzle according to claim 1, it is characterised in that the outside cyclone and the inner side cyclone Eddy flow direction is different.
- 4. fuel nozzle according to claim 1, it is characterised in that the outside cyclone and the inner side cyclone are equal With jet hole, the jet hole of the outside cyclone is different from the aperture of the jet hole of the inner side cyclone.
- 5. fuel nozzle according to claim 1, it is characterised in that the port of export pair with the inner cylinder of the centerbody The one end answered is tapered.
- 6. fuel nozzle according to claim 1, it is characterised in that the port of export pair with the inner cylinder of the centerbody The one end answered is in truncated cone shape.
- 7. fuel nozzle according to claim 6, it is characterised in that one end of the truncated cone shape of the centerbody is equipped with duty Fuel channel.
- 8. fuel nozzle according to claim 1, it is characterised in that be equipped with fuel channel, the combustion in the centerbody Material passage is connected with the outside cyclone and the inner side cyclone.
- 9. according to the fuel nozzle any one of claim 1-8, it is characterised in that the centerbody with the inner cylinder The corresponding one end of input end be equipped with mounting flange.
- 10. a kind of burner of gas turbine, it is characterised in that sprayed including fuel as claimed in any one of claims 1-9 wherein Mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721135164.0U CN207365101U (en) | 2017-09-05 | 2017-09-05 | The burner of fuel nozzle and gas turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721135164.0U CN207365101U (en) | 2017-09-05 | 2017-09-05 | The burner of fuel nozzle and gas turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207365101U true CN207365101U (en) | 2018-05-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721135164.0U Active CN207365101U (en) | 2017-09-05 | 2017-09-05 | The burner of fuel nozzle and gas turbine |
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| CN (1) | CN207365101U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107620981A (en) * | 2017-09-05 | 2018-01-23 | 中国联合重型燃气轮机技术有限公司 | The burner of fuel nozzle and gas turbine |
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2017
- 2017-09-05 CN CN201721135164.0U patent/CN207365101U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107620981A (en) * | 2017-09-05 | 2018-01-23 | 中国联合重型燃气轮机技术有限公司 | The burner of fuel nozzle and gas turbine |
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