CN208983408U - A kind of dual circuit gaseous fuel burners structure for gas turbines - Google Patents
A kind of dual circuit gaseous fuel burners structure for gas turbines Download PDFInfo
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- CN208983408U CN208983408U CN201821276539.XU CN201821276539U CN208983408U CN 208983408 U CN208983408 U CN 208983408U CN 201821276539 U CN201821276539 U CN 201821276539U CN 208983408 U CN208983408 U CN 208983408U
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- pipeline
- fuel pipe
- fuel
- gas fuel
- road gas
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Abstract
A kind of dual circuit gaseous fuel burners structure for gas turbines, ecto-entad is followed successively by outside air pipeline, main road gas fuel pipe, inside air pipeline, secondary road gas fuel pipe and central fuel pipeline, in arranged concentric, the outlet of each pipeline is all combustion chamber.Inside air tube outlet is equipped with water conservancy diversion chip cyclone, without cyclone in secondary road gas fuel pipe.Below the outlet of secondary road gas fuel pipe, the fuel that the rotational flow air of formation can be ejected with secondary road fuel gas pipeline mixes inside air tube outlet；Secondary road gas fuel pipe exports gradually constriction, the pyramidal structure formed between central fuel pipeline, the design can accurately adjust secondary road gas fuel pipe fuel inlet, compared with existing structure, when putting into secondary road fuel, the air velocity in secondary road gas fuel pipe can be greatly reduced, prevent unit from humming increase, stable operation of unit is maintained, unit performance is further played.
Description
Technical field
The utility model relates to integrated gasification combined cycle for power generation system low-calorific-value gas turbine technical fields, especially relate to
And a kind of dual circuit gaseous fuel burners structure for IGCC system gas turbine.
Background technique
Integrated gasification combined cycle plants (Integrated gasification combined cycle, IGCC) are a kind of
The synthesis gas that the solid fuel gasifications such as coal generate is used for the generation technology of Gas-steam Combined Cycle.Synthesis gas it is main
Combusting component is CO and H2, calorific value is lower, is 1/5th of natural gas, to prevent hydrogen-rich combustion flashback phenomenon, using diffusion
Combustion system.In general, the gas fuel pipe for using the gas turbine burner design of synthesis gas is divided into main road and secondary road.Into
The fuel on secondary road enters inside air pipeline through several apertures on top and mixes with air, and enters combustion chambers burn through spinning disk.
When actual motion, secondary road is passed through gaseous fuel, and that unit can be made to hum is excessive, causes chaser, which has limited units
Performance.
Summary of the invention
In order to overcome the defects of the prior art described above, the purpose of this utility model is to provide a kind of for gas turbines
Dual circuit gaseous fuel burners structure, can long-term safety reliability service, each gas fuel pipe can come into operation,
IGCC system efficiency is played to greatest extent, so that unit safety stable operation.
In order to achieve the above object, the technical solution of the present invention is:
A kind of dual circuit gaseous fuel burners structure for gas turbines, ecto-entad are followed successively by outside air pipeline
15, main road gas fuel pipe 14, inside air pipeline 13, secondary road gas fuel pipe 12 and central fuel pipeline 11, in same
Heart arrangement；The outside air pipeline 15, main road gas fuel pipe 14, inside air pipeline 13, secondary road gas fuel pipe
12 and central fuel pipeline 11 outlet be combustion chamber；Air pipe line water conservancy diversion chip eddy flow is installed in the outside air pipeline 15
Device 23, fuel gas pipeline water conservancy diversion chip cyclone 22 is equipped with inside main road gas fuel pipe 14, and inside air pipeline 13 exports
Place is equipped with air pipe line water conservancy diversion chip cyclone 21, without cyclone, secondary road gaseous fuel in secondary road gas fuel pipe 12
There is ignitor 31 in the outlet of pipeline 12；Pair road gas fuel pipe 12 exports gradually constriction, with the central fuel pipeline
Pyramidal structure is formed between 11.
The air conducting chip cyclone 21, flow deflector angle with horizontal plane are 15 °~25 °.
The outlet of inside air pipeline 13 1.5cm~2cm below the secondary road gas fuel pipe 12 exports, forms
The fuel that can be ejected with secondary road gas fuel pipe 12 of rotational flow air be sufficiently mixed.
The taper that gas fuel pipe 12 outlet in the pair road is gradually formed between constriction, with the central fuel pipeline 11
Structure, it is preferable that the cone angle of the pyramidal structure is 30 °~60 °.Pair road gas fuel pipe 12 and the inside air
Tube wall between pipeline 13 is 41, which is to can accurately adjust fuel inlet when putting into secondary road fuel gas.
In existing burner structure, the tube wall between secondary road gas fuel pipe 12 and inside air pipeline is 42, is had on tube wall 42 small
Hole, the synthesis gas for being passed through the secondary road gas fuel pipe 12 enter inside air pipeline 13 by the aperture on tube wall 42, with
After air mixing therein, enter combustion chamber through cyclone 21.Secondary road can be greatly reduced in the structure of the utility model burner
Air velocity in gas fuel pipe prevents unit from humming increase, and forms certain air flow impulse, so that secondary road fuel shape
At flame kernel far from burner, prevent burner scaling loss.
The benefit effect of the utility model is:
The utility model is compared with existing burner, removes the aperture knot of existing burner pair road gas fuel pipe 12
Structure extends the tube wall 41 between secondary road gas fuel pipe 12 and inside air pipeline 13 to combustion chamber, so that secondary road gas combustion
Material becomes diffusion combustion, and the flow velocity of synthesis gas in secondary road gas fuel pipe 12 is greatly reduced.It is small under existing burner structure
Fuel gas flow-rate in hole can achieve 300m/s, and impact 13 wall surface of inside air pipeline, increases gas turbine and hums, makes
At chaser.In the utility model structure, the flow velocity of secondary 12 synthesis gas of road gas fuel pipe is greatly reduced, up to 70m/s
Left and right, is injected directly into combustion chamber, is mixed and burned with the rotational flow air that inside air pipeline 13 sprays, will not impact combustor
It is excessive that wall surface causes unit to hum, and forms certain air flow impulse, so that the flame kernel that secondary road fuel is formed is far from burning
Device prevents burner scaling loss, guarantees stable operation of unit, further plays unit performance.
Detailed description of the invention
Fig. 1-1 is the schematic cross-section of the utility model burner structure.
Fig. 1-2 is the bottom view of the utility model burner structure.
Fig. 2-1 is the utility model burner structure pair road gas fuel pipe and inside air pipeline partial schematic diagram.
Fig. 2-2 is existing burner structure pair road gas fuel pipe and inside air pipeline partial schematic diagram.
Specific embodiment
The utility model is described in detail with reference to the accompanying drawing.
As shown in Fig. 1-1 and Fig. 1-2, one of the present embodiment dual circuit gaseous fuel burners for gas turbines
Structure, including ignitor 31, outside air pipeline 15, main road gas fuel pipe 14, inside air pipeline 13, secondary road gas
Fuel conduit 12 and central fuel pipeline 11 are in arranged concentric.Air pipe line water conservancy diversion is installed in the outside air pipeline 15
Chip cyclone 23, is equipped with fuel gas pipeline water conservancy diversion chip cyclone 22 inside the main road gas fuel pipe 14, it is described in
Air pipe line 13 exit in side is equipped with air conducting chip cyclone 21, without eddy flow in pair road gas fuel pipe 12
There are ignitor 31 in device, the secondary outlet of road gas fuel pipe 12；Pair road gas fuel pipe 12 exports gradually constriction, with institute
It states and forms pyramidal structure between central fuel pipeline 11.
Referring to Fig. 2-1 and Fig. 2-2, it can be seen that the difference of the utility model and existing burner structure.The utility model
In, it is seamless tube wall between the inside air pipeline 13 and the secondary road gas fuel pipe 12, is not connected between each other,
The outlet of the pair road gas fuel pipe 12 is combustion chamber, and the flow velocity of synthesis gas is substantially in pair road gas fuel pipe 12
It reduces, up to 70m/s or so is injected directly into combustion chamber, and the rotational flow air sprayed with the inside air pipeline 13 is mixed
Combination burning, will not impact combustor wall surface to cause unit to hum excessive, and certain air flow impulse is formed, so that secondary road fuel shape
At flame kernel far from burner, prevent burner scaling loss, guarantee stable operation of unit, further play unit performance.And
Existing burner structure has aperture, secondary road gas on the tube wall 42 between inside air pipeline 13 and secondary road gas fuel pipe 12
Synthesis gas in fluid fuel pipeline 12 enters inside air pipeline 13 by the aperture on tube wall 42, and gas flow rate can achieve
300m/s, and 13 wall surface of inside air pipeline is impacted, increase gas turbine and hum, causes chaser.
The outlet of inside air pipeline 13 1.5cm~2cm below the secondary road fuel gas pipeline 12 exports, it is described
The outlet of inside air pipeline 13 is equipped with air conducting chip cyclone 21, can form rotational flow gas.The air conducting chip
The flow deflector of cyclone 21 is horizontal by 15 °~25 ° angles.The pair gas-guide pipeline 12 exports no cyclone, ejects
Fuel gas can be mixed and burned with rotational flow air that the inside air pipeline 13 ejects.
Pair road gas fuel pipe 12, which exports, gradually forms taper knot between constriction, with the central fuel pipeline 11
Structure, preferred cone angle are 30 °~60 °.
There is the ignitor 31 in gas fuel pipe 12 exit in the pair road.Pair road gas fuel pipe 12
It is the pipeline for injecting igniter gas.When unit starting, the igniter gas of injection is lighted through the ignitor 31, the center combustion of igniting
The fuel oil that oil pipe line 11 injects.
According to different unit load situations, main road gas fuel pipe and secondary road gas fuel pipe are used.Secondary road gas
Fuel conduit can undertake the gas fuel flow rate of unit 0%-25% load, and main road gas fuel pipe can undertake unit
The gas fuel flow rate of 0%-100% load.When main road gas fuel pipe is unable to maintain that stable gas fuel combustion, beat
The road Kai Fu gas fuel pipe, main road gas fuel pipe co- controlling gas fuel flow rate, so that steady fuel is burnt.
In addition to the implementation, the utility model further includes having other embodiments, all to use equivalents or equivalent
The technical solution that alternative is formed, should all fall within the protection scope of the utility model claims.
Claims (4)
1. a kind of dual circuit gaseous fuel burners structure for gas turbines, it is characterised in that: ecto-entad is followed successively by outer
Side air pipe line (15), main road gas fuel pipe (14), inside air pipeline (13), secondary road gas fuel pipe (12) and in
Heart fuel pipe (11) is in arranged concentric；The outside air pipeline (15), main road gas fuel pipe (14), inside air
Pipeline (13), secondary road gas fuel pipe (12) and central fuel pipeline (11) outlet are combustion chamber；The outside air pipeline
(15) air pipe line water conservancy diversion chip cyclone (23) is installed in, fuel gas pipeline is installed inside main road gas fuel pipe (14)
Water conservancy diversion chip cyclone (22), inside air pipeline (13) exit are equipped with air pipe line water conservancy diversion chip cyclone (21), secondary
Without cyclone in road gas fuel pipe (12), secondary road gas fuel pipe (12) outlet has ignitor (31)；The pair
Road gas fuel pipe (12) outlet gradually forms pyramidal structure between constriction, with the central fuel pipeline (11).
2. a kind of dual circuit gaseous fuel burners structure for gas turbines according to claim 1, feature exist
In: the air conducting chip cyclone (21), flow deflector angle with horizontal plane are 15 °~25 °.
3. a kind of dual circuit gaseous fuel burners structure for gas turbines according to claim 1, feature exist
In: inside air pipeline (13) outlet exports lower section 1.5cm~2cm in the secondary road gas fuel pipe (12), is formed
The fuel that can be ejected with secondary road gas fuel pipe (12) of rotational flow air be sufficiently mixed.
4. a kind of dual circuit gaseous fuel burners structure for gas turbines according to claim 1, feature exist
In: the cone angle of the pyramidal structure is 30 °~60 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821276539.XU CN208983408U (en) | 2018-08-08 | 2018-08-08 | A kind of dual circuit gaseous fuel burners structure for gas turbines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821276539.XU CN208983408U (en) | 2018-08-08 | 2018-08-08 | A kind of dual circuit gaseous fuel burners structure for gas turbines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208983408U true CN208983408U (en) | 2019-06-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821276539.XU Active CN208983408U (en) | 2018-08-08 | 2018-08-08 | A kind of dual circuit gaseous fuel burners structure for gas turbines |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109237514A (en) * | 2018-08-08 | 2019-01-18 | 中国华能集团有限公司 | A kind of dual circuit gaseous fuel burners for gas turbines |
-
2018
- 2018-08-08 CN CN201821276539.XU patent/CN208983408U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109237514A (en) * | 2018-08-08 | 2019-01-18 | 中国华能集团有限公司 | A kind of dual circuit gaseous fuel burners for gas turbines |
| CN109237514B (en) * | 2018-08-08 | 2024-02-23 | 中国华能集团有限公司 | Double-pipeline gas fuel burner for gas turbine |
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