CN207729578U - A kind of super critical boiler cyclone burner - Google Patents
A kind of super critical boiler cyclone burner Download PDFInfo
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- CN207729578U CN207729578U CN201721726675.XU CN201721726675U CN207729578U CN 207729578 U CN207729578 U CN 207729578U CN 201721726675 U CN201721726675 U CN 201721726675U CN 207729578 U CN207729578 U CN 207729578U
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- coal
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- thin powdered
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Abstract
The utility model discloses a kind of super critical boiler cyclone burners, including external fine coal ring shaped separator, coal pulverizer, tailing separator, primary wind and powder manifold, thick coal culm First air branch pipe, thin powdered coal First air branch pipe, thick coal culm burner nozzle and thin powdered coal burner nozzle, coal pulverizer connects tailing separator, tailing separator connects primary wind and powder manifold, primary wind and powder manifold connection external fine coal ring shaped separators, external fine coal ring shaped separator connects thick coal culm First air branch pipe and thin powdered coal First air branch pipe, thick coal culm First air branch pipe connects thick coal culm burner nozzle, thin powdered coal First air branch pipe connects thin powdered coal burner nozzle.
Description
Technical field
The utility model belongs to Electric Power Generating Equipment field, especially a kind of super critical boiler cyclone burner.
Background technology
Currently, China's Thermal generation unit gradually develops to high parameter, large capacity direction, it is overcritical at present (to face containing super
It is boundary, the same below) unit installed capacity accounts for coal-fired total installation of generating capacity ratio and alreadys exceed 40%, and super critical boiler burning includes quadrangle
Three kinds of (or four walls) circle of contact straight flow combustion, W type undershoot straight flow combustions and opposed firing swirl flow combustion main ways.Wherein, preceding
Wall liquidates swirl flow combustion mode because big, power regulation is conveniently with burner hearth breadth depth ratio accommodation, coal adaptability is good etc. afterwards
Advantage is used widely.
All it is to carry out coal using the built-in pulverized coal concentrator of burner using the boiler of opposed firing swirl flow combustion mode
Powder air-coal separating is used to stablize burning and reduces NOx emission, and the coal powder distribation adjusting of same layer combustion system relies primarily on once
The adjustable contraction of wind pulverized coal channel can be influenced by pipeline flow area and minimum coal dust flow velocity in production, make coal powder distribation
The amplitude of accommodation is limited, causes the wind powder of furnace chamber width to distribute uneven, leading to flue width direction, there are larger smoke temperature is inclined
Difference and wall temperature of heated surface deviation, have seriously affected the safety of boiler operatiopn.
Utility model content
The utility model carries out the predistribution of burning load, and same layer combustion system using external coal powder distribation mode
Burner load arranged using differentiation, improve the amplitude of accommodation of coal powder distribation, gas temperature windage and heated can be effectively relieved
It faces the wall and meditates warm offset issue.
To solve the above-mentioned problems, the utility model proposes a kind of super critical boiler cyclone burners.
Technical solution used by the utility model is：
A kind of super critical boiler cyclone burner, including the separation of external fine coal ring shaped separator, coal pulverizer, coarse powder
Device, primary wind and powder manifold, thick coal culm First air branch pipe, thin powdered coal First air branch pipe, thick coal culm burner nozzle and thin powdered coal combustion
Burner spout, coal pulverizer connect tailing separator, and tailing separator connects primary wind and powder manifold, and primary wind and powder manifold connections are external
Formula fine coal ring shaped separator, external fine coal ring shaped separator connect thick coal culm First air branch pipe and thin powdered coal First air branch pipe,
Thick coal culm First air branch pipe connects thick coal culm burner nozzle, and thin powdered coal First air branch pipe connects thin powdered coal burner nozzle.
Further, the external fine coal ring shaped separator includes under upper surface, outer housing, inner housing, deep or light isolation
End face, pre-separation deflector, separate blade, light powder deflection cone, primary wind and powder import, thin powdered coal outlet, thick coal culm export and divide
Light powder internal channel is flowed, outer housing top connects upper surface, and outer housing lower part connects thin powdered coal outlet, and the connection of shell body side surface is primary
Wind powder import, primary wind and powder import connect primary wind and powder manifold, and connection thick coal culm exports in the middle part of upper surface, the connection of upper surface lower part
Separate blade, separate blade lower part connect deep or light isolation lower face, are provided with circular hole in the middle part of deep or light isolation lower face, circular hole is located at
Thick coal culm outlet lower section, deep or light isolation lower face bottom connect inner housing, and inner casing body side surface connects pre-separation deflector and light powder
Deflection cone, the connection of inner housing lower part shunt light powder internal channel, and pre-separation deflector and light powder deflection cone are located at primary wind and powder
Above and below import, shunts light powder internal channel and connected with thin powdered coal outlet.
Preferably, the shunting light powder internal channel lower part is provided with the light powder outer tunnel of shunting, shunts light powder outer tunnel and passes through
Outer housing simultaneously connects outside outer housing with thin powdered coal outlet.It shunts and connects with thin powdered coal outlet outside light powder outer tunnel outer housing
It is logical, it is mutually blended with thick coal culm for avoiding part thin powdered coal air-flow from entering inner housing from the light powder internal channel of shunting.
Preferably, the separate blade along inner housing axle center in being arranged circumferentially, and each separate blade off-axis
Heart radial direction certain angle.Separate blade along inner housing axle center in being arranged circumferentially, and each separate blade disalignment diameter
To certain angle, breeze airflow is made to play vortex centrifugation.
Preferably, the pre-separation deflector along inner housing axle center in being arranged circumferentially, and each pre-separation water conservancy diversion
Plate disalignment radial direction certain angle.Pre-separation deflector along inner housing axle center in being arranged circumferentially, and each pre-separation
Deflector disalignment radial direction certain angle plays preconditioning and guide functions to breeze airflow concentration.
Preferably, there are gaps between the light powder deflection cone and outer housing.The lower cone of light powder deflection cone and outer housing
There are gaps between body, form the through-flow mouth of light powder, and light powder deflection cone plays adjustment effect to coal powder light-dark segregation ratio, and right
Thin powdered coal air-flow plays guide functions.
Preferably, the outer housing is identical with the axis of inner housing, and outer housing and inner housing lower part are taper knot
Structure, the axis that upper surface, deep or light isolation lower face, thick coal culm outlet and thin powdered coal export overlap.Pyramidal structure is conducive to
Reduce gas-flow resistance.Axis coincidence facilitates processing, and gas flow is short, and resistance is small.
Preferably, the thick coal culm burner nozzle and thin powdered coal burner nozzle are positioned apart from.Be conducive to along boiler
Furnace chamber width adjusts the distribution of coal powder density, to improve the ability that boiler adjusts Load Distribution.
Preferably, the thick coal culm burner nozzle is located at centre, and thin powdered coal burner nozzle is located at both sides.Be conducive to edge
Boiler furnace width direction adjusts the distribution of coal powder density, to improve the ability that boiler adjusts Load Distribution.
The utility model compared with the existing technology has the following advantages and effect：
1, the utility model carries out the predistribution of burning load using external coal powder distribation mode, is combined with First air coal
The adjustable contraction of powder pipeline uses, and can promote the differentiation assigned degree of the burner load of sustained height layer combustion system,
The amplitude of accommodation of coal powder distribation is improved, gas temperature windage and wall temperature of heated surface offset issue can be effectively relieved.
2, the utility model is designed reasonably, simple in structure, dependable performance.
3, the utility model carries out Pulverized Coal Concentration and air-coal separating to the coal dust for entering external fine coal ring shaped separator, and
And the air-coal separating of progress twice, coal dust is adjusted, gas temperature windage and wall temperature of heated surface offset issue can be effectively relieved.
4, separate blade and pre-separation deflector is arranged by circumferential annular in the utility model, so that coal dust is formed vortex, just
In the circulation of coal dust.
Description of the drawings
The attached drawing constituted part of this application is used to provide a further understanding of the present invention, the utility model
Illustrative embodiments and their description are not constituted improper limits to the present invention for explaining the utility model.
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the structural schematic diagram of external fine coal ring shaped separator；
Fig. 3 is sectional views of the Fig. 1 in the directions A-A；
Fig. 4 is sectional views of the Fig. 1 in the directions B-B；
Fig. 5 light, thick coal culm burner nozzle structural schematic diagrams for embodiment 7；
Fig. 6 light, thick coal culm burner nozzle structural schematic diagrams for embodiment 8.
Label declaration：
Upper surface 1；Deep or light isolation lower face 2；Outer housing 3；Inner housing 4；
Primary wind and powder import 5；Light powder deflection cone 6；Shunt light powder internal channel 7；
Thick coal culm outlet 8；Separate blade 9；Inner chamber body 10；Pre-separation deflector 11；
Outer chamber 12；Light powder is through-flow mouth 13；Shunt light powder outer tunnel 14；Thin powdered coal outlet 15；
Thick coal culm First air branch pipe 16；External fine coal ring shaped separator 17；Thin powdered coal First air branch pipe 18；
Primary wind and powder manifold 19；Tailing separator 20；Coal pulverizer 21；Wall 22 on the left of burner hearth；
Thin powdered coal burner nozzle 23；Thick coal culm burner nozzle 24；Burner hearth right-side wall 25；
Deep or light isolation lower face circular hole 26.
Specific implementation mode
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only explaining this
Utility model is not used to limit the utility model.
Embodiment 1：As shown in Figures 1 to 4, a kind of super critical boiler cyclone burner, is detached by external coal powder light-dark
Device 17, coal pulverizer 21, tailing separator 20, primary wind and powder manifold 19, thick coal culm First air branch pipe 16, thin powdered coal First air branch pipe
18, thick coal culm burner nozzle 24 and thin powdered coal burner nozzle 23 form, and coal pulverizer 21 connects tailing separator 20, coarse powder point
Primary wind and powder manifold 19, the connection externals of primary wind and powder manifold 19 fine coal ring shaped separator 17, external coal dust are connected from device 20
Dense-and-weak separator 17 connects thick coal culm First air branch pipe 16 and thin powdered coal First air branch pipe 18, and thick coal culm First air branch pipe 16 connects
Thick coal culm burner nozzle 24, thin powdered coal First air branch pipe 18 connect thin powdered coal burner nozzle 23, thin powdered coal burner nozzle
23 and thick coal culm burner nozzle 24 connect with boiler furnace.External fine coal ring shaped separator 17 includes upper surface 1, outer housing
3, inner housing 4, deep or light isolation lower face 2, pre-separation deflector 11, separate blade 9, light powder deflection cone 6, primary wind and powder import 5,
Thin powdered coal outlet 15, thick coal culm outlet 8 and the light powder internal channel 7 of shunting, inner housing 4 will be divided into outer chamber 12 inside outer housing 3
With inner chamber body 10,3 top of outer housing connects upper surface 1, and 3 lower part of outer housing connects thin powdered coal outlet 15, the connection of 3 side of outer housing
Primary wind and powder import 5, primary wind and powder import 5 connect primary wind and powder manifold 19, and 1 middle part of upper surface is welded and fixed thick coal culm outlet 8,
Deep or light isolation lower face 2 is parallel with upper surface 1, in short transverse between the two, by the separate blade 9 that is circumferentially circular layout into
Row is connected and is fixed, and 2 middle part of deep or light isolation lower face is provided with deep or light isolation lower face circular hole 26, deep or light isolation lower face circular hole
26 are located at thick coal culm outlet lower section 9, and deep or light 2 bottom of isolation lower face connects inner housing 4, and the connection pre-separation of 4 side of inner housing is led
Flowing plate 11 and light powder deflection cone 6, the connection of 4 lower part of inner housing shunt light powder internal channel 7, pre-separation deflector 11 and light powder deflection cone
6 are located above and below primary wind and powder import 5, and pre-separation deflector 11 is circumferentially circular layout, and light powder deflection cone 6 is
Tapered disk shunts light powder internal channel 7 and is connect with thin powdered coal outlet 15.
In use, raw coal is ground by delivering into coal pulverizer 21, and after being sieved by tailing separator 20, granularity
Qualified drying coal dust enters primary wind and powder manifold 19, and under the conveying of First air effect, into external coal powder light-dark point
From device 17, Pulverized Coal Concentration and air-coal separating, the breeze airflow from primary wind and powder manifold 19, via primary wind and powder are carried out wherein
Import 5 enters the outer chamber 12 of external fine coal ring shaped separator 17, and a portion air-flow passes through pre-separation deflector 11,
Tangential vortex effect is lower to carry out first time coal powder light-dark pre-separation, and the thick coal culm air-flow after first time pre-separation passes through outer chamber 12
Then the separate blade 9 on top enters inner chamber body 10, in the vortex of separate blade 9 from the center hole of deep or light isolation lower face 2
Under effect, the thick coal culm air-flow after first time pre-separation has carried out second of air-coal separating, and final thick coal culm air-flow is from inner chamber body
8 outflow of thick coal culm outlet that 10 tops are connected to, it is light after first time coal powder light-dark pre-separation into thick coal culm First air branch pipe 16
Coal dust, the breeze airflow entered from primary wind and powder import 5 with a part, jointly from 3 lower part cone of outer housing and light powder deflection cone 6
The through-flow mouth 13 of light powder constituted enters 12 lower part of outer chamber, finally by 15 outflow of thin powdered coal outlet, into thin powdered coal First air branch
Pipe 18.Thin powdered coal after second of air-coal separating then flows out outer housing 3 by the light powder internal channel 7 of the shunting of 10 lower part of inner chamber body, and
Converge with the thin powdered coal air-flow of 12 lower part cone of outer chamber.By the thick coal culm of concentration, under the conveying effect of part First air,
Thick coal culm First air branch pipe 16 is entered by the thick coal culm outlet 8 on 17 top of external fine coal ring shaped separator, finally via dense coal
Powder burner spout 24 burns into boiler furnace.Remaining thin powdered coal is acted in the conveying of another part First air
Under, thin powdered coal First air branch pipes 18 are entered by the thin powdered coal outlet 15 of 17 lower part of external fine coal ring shaped separator, finally via
Thin powdered coal burner nozzle 23 burns into boiler furnace.
Embodiment 2：
The present embodiment is substantially the same manner as Example 1, and distinctive points are：Light 7 lower part of powder internal channel setting is shunted in embodiment 2
There is the light powder outer tunnel 14 of shunting, shunt light powder outer tunnel 14 across outer housing 3 and connects from 3 outside of outer housing with thin powdered coal outlet 15
It connects.
In use, the thin powdered coal after second of air-coal separating, then flowed out by the light powder internal channel of the shunting of 10 lower part of inner chamber body 7
Outer housing 3 converges then via light powder outer tunnel 14 is shunted with the thin powdered coal air-flow of 12 lower part cone of outer chamber.
Embodiment 3：
The present embodiment is substantially the same manner as Example 2, and distinctive points are：In embodiment 3, separate blade 9 is along 4 axle center of inner housing
In being arranged circumferentially, and 9 disalignment radial direction certain angle of each separate blade, the angle are 50 °.
Embodiment 4：
The present embodiment is substantially the same manner as Example 2, and distinctive points are：In embodiment 4, pre-separation deflector 11 is along inner housing
4 axle center are in be arranged circumferentially, and each 11 disalignment radial direction certain angle of pre-separation deflector, the angle are 30 °..
Embodiment 5：
The present embodiment is substantially the same manner as Example 2, and distinctive points are：In embodiment 5, light powder deflection cone 6 and outer housing 3
There are gap between the cone of lower part, the through-flow mouth of light powder 13 is formd.
Embodiment 6：
The present embodiment is substantially the same manner as Example 3, and distinctive points are：In embodiment 6, the axis of outer housing 3 and inner housing 4
It is identical, and outer housing 3 and 4 lower part of inner housing are pyramidal structure, upper surface 1, deep or light isolation lower face 2, thick coal culm outlet 8
It overlaps with the axis of thin powdered coal outlet 15.
Embodiment 7：
The present embodiment is substantially the same manner as Example 6, and distinctive points are：In embodiment 7, as shown in figure 5, the thick coal culm fires
Burner spout 24 and thin powdered coal burner nozzle 23 are positioned apart from, 23 both sides of thin powdered coal burner nozzle respectively with burner hearth on the left of
Wall 22 and burner hearth right-side wall 25 connect.
Embodiment 8：
The present embodiment is substantially the same manner as Example 6, and distinctive points are：In embodiment 8, as shown in fig. 6, thick coal culm burner
Spout 24 is located at centre, and thin powdered coal burner nozzle 23 is located at both sides, and 23 both sides of thin powdered coal burner nozzle are left with burner hearth respectively
Side wall 22 and burner hearth right-side wall 25 connect.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all in this practicality
Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model
Within the scope of shield.
Claims (9)
1. a kind of super critical boiler cyclone burner, which is characterized in that including external fine coal ring shaped separator, coal pulverizer,
Tailing separator, primary wind and powder manifold, thick coal culm First air branch pipe, thin powdered coal First air branch pipe, thick coal culm burner nozzle and
Thin powdered coal burner nozzle, coal pulverizer connect tailing separator, and tailing separator connects primary wind and powder manifold, primary wind and powder manifold
External fine coal ring shaped separator is connected, external fine coal ring shaped separator connects thick coal culm First air branch pipe and thin powdered coal is primary
Wind branch pipe, thick coal culm First air branch pipe connect thick coal culm burner nozzle, and thin powdered coal First air branch pipe connects thin powdered coal burner
Spout.
2. super critical boiler cyclone burner according to claim 1, which is characterized in that the external coal powder light-dark
Separator includes upper surface, outer housing, inner housing, deep or light isolation lower face, pre-separation deflector, separate blade, light powder water conservancy diversion
Cone, primary wind and powder import, thin powdered coal outlet, thick coal culm export and shunt light powder internal channel, and outer housing top connects upper surface, outside
Lower part of the housing connects thin powdered coal outlet, and shell body side surface connects primary wind and powder import, and it is total that primary wind and powder import connects primary wind and powder
Pipe, the outlet of upper surface middle part connection thick coal culm, upper surface lower part connect separate blade, and separate blade lower part connects under deep or light isolation
End face, deep or light isolation lower face middle part are provided with circular hole, and circular hole is located at thick coal culm outlet lower section, and deep or light isolation lower face bottom connects
Inner housing is connect, inner casing body side surface connects pre-separation deflector and light powder deflection cone, and the connection of inner housing lower part shunts light powder internal channel,
Pre-separation deflector and light powder deflection cone are located above and below primary wind and powder import, shunt light powder internal channel and light coal
Powder outlet connection.
3. super critical boiler cyclone burner according to claim 2, which is characterized in that the light powder internal channel of shunting
Lower part is provided with the light powder outer tunnel of shunting, shunts light powder outer tunnel across outer housing and connects with thin powdered coal outlet outside outer housing
It connects.
4. super critical boiler cyclone burner according to claim 3, which is characterized in that the separate blade is along inner casing
Body axle center is in being arranged circumferentially, and each separate blade disalignment radial direction certain angle.
5. super critical boiler cyclone burner according to claim 3, which is characterized in that pre-separation deflector edge
Inner housing axle center is in being arranged circumferentially, and each pre-separation deflector disalignment radial direction certain angle.
6. super critical boiler cyclone burner according to claim 3, which is characterized in that the light powder deflection cone with it is outer
There are gaps between shell.
7. according to any super critical boiler cyclone burner of claim 4,5,6, which is characterized in that the outer housing
It is identical with the axis of inner housing, and outer housing and inner housing lower part are pyramidal structure, upper surface, deep or light isolation lower face,
Thick coal culm exports and the axis of thin powdered coal outlet overlaps.
8. super critical boiler cyclone burner according to claim 7, which is characterized in that the thick coal culm burner spray
Mouth and thin powdered coal burner nozzle are positioned apart from.
9. super critical boiler cyclone burner according to claim 7, which is characterized in that the thick coal culm burner spray
Mouth is located at centre, and thin powdered coal burner nozzle is located at both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721726675.XU CN207729578U (en) | 2017-12-13 | 2017-12-13 | A kind of super critical boiler cyclone burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721726675.XU CN207729578U (en) | 2017-12-13 | 2017-12-13 | A kind of super critical boiler cyclone burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207729578U true CN207729578U (en) | 2018-08-14 |
Family
ID=63098275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721726675.XU Expired - Fee Related CN207729578U (en) | 2017-12-13 | 2017-12-13 | A kind of super critical boiler cyclone burner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207729578U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108167821A (en) * | 2017-12-13 | 2018-06-15 | 华电电力科学研究院 | Super critical boiler cyclone burner |
-
2017
- 2017-12-13 CN CN201721726675.XU patent/CN207729578U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108167821A (en) * | 2017-12-13 | 2018-06-15 | 华电电力科学研究院 | Super critical boiler cyclone burner |
| CN108167821B (en) * | 2017-12-13 | 2024-03-26 | 华电电力科学研究院 | Cyclone combustion device for supercritical boiler |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180814 Termination date: 20181213 |