CN204005983U - A kind of burner structure for gas boiler - Google Patents
A kind of burner structure for gas boiler Download PDFInfo
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- CN204005983U CN204005983U CN201420330737.5U CN201420330737U CN204005983U CN 204005983 U CN204005983 U CN 204005983U CN 201420330737 U CN201420330737 U CN 201420330737U CN 204005983 U CN204005983 U CN 204005983U
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- gas
- cyclone
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- coal
- air cavity
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Abstract
The utility model provides a kind of burner structure for gas boiler, the mixed air cavity (2) of described burner structure is communicated with air duct (3) and gas piping (4) respectively, in mixed air cavity (2), air cyclone (5) and coal gas cyclone (6) are set, air swirl sheet (7) and coal gas spinning disk (8) are set respectively on air cyclone (5) and coal gas cyclone (6), air cyclone (5) is connected with the control assembly (16) that can control air cyclone (5) and coal gas cyclone (6) positive and negative rotation with coal gas cyclone (6), control assembly (16) is connected with gauge tap (17).Burner structure described in the utility model, simple in structure, can improve the mixed effect of low combustion value furnace gas and air, the stability while strengthening gas-fired, reduces blast furnace gas simultaneously and in the time of Initial Stage after Ignition and underload, exotic fuels is relied on.
Description
Technical field
The utility model belongs to gas boiler technical field, more particularly, relates to a kind of burner structure for gas boiler.
Background technology
Because blast furnace gas calorific value is low, ignition point is high, poor combustion stability, so, blast furnace gas Stable Combustion Technology receives much concern, along with gas-fired technology is constantly progressive, and the new and effective gas double turbulent burner of domestic one, front-back wall (or two side walls) arrangement is widely used in Blast Furnace Gas-fired Boiler.For mixing the coal-powder boiler of coal gas, burner is mostly four jiaos of layouts, and taking DC burner as main, mix while burning and often need combustion-supporting oil, mixed-fuel burning proportion is generally no more than 30%, because blending gas boiler thermal output is lower and national industrial policies restriction, along with combustion technology progress, the comprehensive utilization of coal gas is mainly that burner model is all so that double-cyclone is as main in the same way taking clean burn or combined cycle mode as main, and reverse combustion technology grew up in recent years.For the upgrading of former blending gas coal-powder boiler, industry Nei Ge power plant way differs larger.Four jiaos of layouts of reverse double-cyclone gas burner, in steel industry, also do not used at home at present, its main cause is: coal gas system operation is had relatively high expectations to device security, the excessive dispersed placement of pipeline, can greatly improve construction cost, and technical requirement is high, transformation difficulty is large, generally adopt now two side walls or front-back wall mode to arrange, even four jiaos of gas boilers of arranging are also to adopt combustion technology in the same way.Burner structure of the prior art, in the time that fire box temperature is higher, burn highly stable, but at Initial Stage after Ignition, due to the de-fire of the low easy generation of fire box temperature, relatively oppositely comparatively difficult when igniting, coal gas is also relative poor with air mixing condition, therefore need to be by means of exotic fuels, affect the effect of burner structure ignition and combustion.
Utility model content
Technical problem to be solved in the utility model is: provide a kind of simple in structure, can improve the mixed effect of low combustion value furnace gas and air, stability while strengthening gas-fired reduces the burner structure for gas boiler that blast furnace gas relies on exotic fuels in the time of Initial Stage after Ignition and underload simultaneously.
Solve above-described technical problem, the technical scheme that the utility model is taked is:
The utility model is a kind of burner structure for gas boiler, described burner structure comprises combustion chamber, mixed air cavity, mixed air cavity is communicated with air duct and gas piping respectively, in mixed air cavity, air cyclone and coal gas cyclone are set, multi-disc air swirl sheet and multi-disc coal gas spinning disk are set respectively on air cyclone and coal gas cyclone, air cyclone is connected with the control assembly that can control air cyclone and coal gas cyclone positive and negative rotation with coal gas cyclone, and control assembly is connected with gauge tap.
Described combustion chamber and mixed air cavity link together, and in described mixed air cavity, multiple mixture gas nozzles are set, and multiple mixture gas nozzles are all set to extend to the structure in combustion chamber, and mixture gas nozzle is connected with the control assembly of controlling mixture gas nozzle start and stop.
Described air duct and gas piping are communicated with air source of the gas and gas source respectively, gas source comprises blast furnace coal source of the gas and coke-oven coal source of the gas, blast furnace coal source of the gas and coke-oven coal source of the gas are communicated with mixed air cavity by blast furnace coal pipeline and coke-oven coal pipeline respectively, and described combustion chamber outer setting is for the cooling-part in cooling combustion chamber.
Described mixture gas nozzle is set to be positioned at the structure on the mixed air cavity left side of mixing air cavity, and air cyclone and coal gas cyclone are set to be positioned at the position of mixed air cavity left part, and air swirl sheet and multi-disc coal gas spinning disk are set to the structure that direction of rotation is contrary.
Described burner structure also comprises secondary air channel, and secondary air channel is communicated with mixed air cavity.
Adopt the technical solution of the utility model, can obtain following beneficial effect:
Burner structure for gas boiler described in the utility model, by air cyclone and the coal gas cyclone of switched in opposite are set in mixed air cavity, the air swirl sheet of air cyclone and the coal gas spinning disk of coal gas cyclone carry out eddy flow mixing to the air and the coal gas that enter mixed air cavity respectively, thereby can improve the mixed effect of low combustion value furnace gas and air, stability while strengthening gas-fired, adopt burner structure of the present utility model, in the time of Initial Stage after Ignition and underload, can use the good blast furnace gas of mixed effect, can reduce blast furnace gas relies on exotic fuels in the time of Initial Stage after Ignition and underload, in the time that coal type change is larger, can also play steady combustion and combustion-supporting effect, be conducive to boiler safety stable operation, strengthen the flexibility of gas balance.Structure of the present utility model, can also effectively prevent blast furnace gas tempering, de-fiery phenomenon, plays stable and combustion-supporting effect, ensures gas safety stable operation, can in enterprise's private station boiler operatiopn, promote.
Brief description of the drawings
Mark in the each accompanying drawing of this description expressed content and figure is made to brief description below:
Fig. 1 is the structural representation of the burner structure for gas boiler described in the utility model;
Accompanying drawing acceptance of the bid note is respectively: 1, combustion chamber; 2, mixed air cavity; 3, air duct; 4, gas piping; 5, air cyclone; 6, coal gas cyclone; 7, air swirl sheet; 8, coal gas spinning disk; 9, mixture gas nozzle; 10, air source of the gas; 11, gas source; 12, blast furnace coal source of the gas; 13, coke-oven coal source of the gas; 14, blast furnace coal pipeline; 15, coke-oven coal pipeline; 16, control assembly; 17, gauge tap; 18, cooling-part; 19, mixed air cavity left side; 20, mixed air cavity left part; 21, secondary air channel.
Detailed description of the invention
Contrast accompanying drawing below, by the description to embodiment, detailed description of the invention of the present utility model is described in further detail as effect and the operation principle etc. of the mutual alignment between the shape of related each member, structure, each several part and annexation, each several part:
As shown in Figure 1, the utility model is a kind of burner structure for gas boiler, described burner structure comprises combustion chamber 1, mixed air cavity 2, mixed air cavity 2 is communicated with air duct 3 and gas piping 4 respectively, mixed interior air cyclone 5 and the coal gas cyclone 6 of arranging of air cavity 2, multi-disc air swirl sheet 7 and multi-disc coal gas spinning disk 8 are set respectively on air cyclone 5 and coal gas cyclone 6, air cyclone 5 is connected with the control assembly 16 that can control air cyclone 5 and coal gas cyclone 6 positive and negative rotations with coal gas cyclone 6, control assembly 16 is connected with gauge tap 17.
Above-mentioned structure setting, can improve the mixed effect of blast furnace gas and air, guarantees that igniting is relatively easy, and in the afterburner of catching fire, mixture combustion is stable, combustion-supporting without steady combustion sources such as exotic fuels.
Described combustion chamber 1 and mixed air cavity 2 link together, described mixed air cavity 2 is interior arranges multiple mixture gas nozzles 9, multiple mixture gas nozzles 9 are all set to extend to the structure in combustion chamber 1, mixture gas nozzle 9 is connected with the control assembly 16 of controlling mixture gas nozzle 9 start and stop, gaseous mixture is ejected in combustion chamber 1 by multiple mixture gas nozzles 9, thereby realizes reliable ignition and the burning of combustion chamber 1 interior gaseous mixture.
Described air duct 3 and gas piping 4 are communicated with air source of the gas 10 and gas source 11 respectively, gas source 11 comprises blast furnace coal source of the gas 12 and coke-oven coal source of the gas 13, blast furnace coal source of the gas 12 and coke-oven coal source of the gas 13 are communicated with mixed air cavity 2 by blast furnace coal pipeline 14 and coke-oven coal pipeline 15 respectively, and combustion chamber 1 outer setting is for the cooling-part 18 in cooling combustion chamber 1.Blast furnace coal pipeline 14 and coke-oven coal pipeline 15 provide blast furnace coal source of the gas 12 and coke-oven coal source of the gas 13 respectively in mixed air cavity, and cooling-part is used to combustion chamber cooling.
Described mixture gas nozzle 9 is set to be positioned at the structure on the mixed air cavity left side 19 of mixing air cavity 2; thereby guarantee that gaseous mixture is accurately and reliably ejected in combustion chamber; air cyclone 5 and coal gas cyclone 6 are set to be positioned at the position of mixed air cavity left part 20, and air swirl sheet 7 and multi-disc coal gas spinning disk 8 are set to the structure that direction of rotation is contrary.Air swirl sheet 7 is contrary with multi-disc coal gas spinning disk 8 direction of rotation, contribute to coal gas and air efficiently, fast mix, guaranteeing that gaseous mixture is realized fully mixes, and improves combustion efficiency.
Described burner structure also comprises secondary air channel 21, and secondary air channel 21 is communicated with mixed air cavity 2.
Burner structure for gas boiler described in the utility model, by air cyclone and the coal gas cyclone of switched in opposite are set in mixed air cavity, the air swirl sheet of air cyclone and the coal gas spinning disk of coal gas cyclone carry out eddy flow mixing to the air and the coal gas that enter mixed air cavity respectively, thereby can improve the mixed effect of low combustion value furnace gas and air, stability while strengthening gas-fired, adopt burner structure of the present utility model, in the time of Initial Stage after Ignition and underload, can use the good blast furnace gas of mixed effect, can reduce blast furnace gas relies on exotic fuels in the time of Initial Stage after Ignition and underload, in the time that coal type change is larger, can also play steady combustion and combustion-supporting effect, be conducive to boiler safety stable operation, strengthen the flexibility of gas balance.Structure of the present utility model, can also effectively prevent blast furnace gas tempering, de-fiery phenomenon, plays stable and combustion-supporting effect, ensures gas safety stable operation, can in enterprise's private station boiler operatiopn, promote.
By reference to the accompanying drawings the utility model is carried out to exemplary description above; obviously the concrete realization of the utility model is not subject to the restrictions described above; as long as the various improvement that adopted method design of the present utility model and technical scheme to carry out; or without improving, design of the present utility model and technical scheme are directly applied to other occasions, all in protection domain of the present utility model.
Claims (5)
1. the burner structure for gas boiler, it is characterized in that: described burner structure comprises combustion chamber (1), mixed air cavity (2), mixed air cavity (2) is communicated with air duct (3) and gas piping (4) respectively, in mixed air cavity (2), air cyclone (5) and coal gas cyclone (6) are set, multi-disc air swirl sheet (7) and multi-disc coal gas spinning disk (8) are set respectively on air cyclone (5) and coal gas cyclone (6), air cyclone (5) is connected with the control assembly (16) that can control air cyclone (5) and coal gas cyclone (6) positive and negative rotation with coal gas cyclone (6), control assembly (16) is connected with gauge tap (17).
2. the burner structure for gas boiler according to claim 1, it is characterized in that: described combustion chamber (1) and mixed air cavity (2) link together, in described mixed air cavity (2), multiple mixture gas nozzles (9) are set, multiple mixture gas nozzles (9) are all set to extend to the structure in combustion chamber (1), and mixture gas nozzle (9) is connected with the control assembly (16) of controlling mixture gas nozzle (9) start and stop.
3. the burner structure for gas boiler according to claim 2, it is characterized in that: described air duct (3) and gas piping (4) are communicated with air source of the gas (10) and gas source (11) respectively, gas source (11) comprises blast furnace coal source of the gas (12) and coke-oven coal source of the gas (13), blast furnace coal source of the gas (12) and coke-oven coal source of the gas (13) are communicated with mixed air cavity (2) by blast furnace coal pipeline (14) and coke-oven coal pipeline (15) respectively, described combustion chamber (1) outer setting is for the cooling-part (18) in cooling combustion chamber (1).
4. according to the burner structure for gas boiler described in claim 2 or 3, it is characterized in that: described mixture gas nozzle (9) is set to be positioned at the structure on the mixed air cavity left side (19) of mixed air cavity (2), air cyclone (5) and coal gas cyclone (6) are set to be positioned at the position of mixed air cavity left part (20), and air swirl sheet (7) and multi-disc coal gas spinning disk (8) are set to the structure that direction of rotation is contrary.
5. the burner structure for gas boiler according to claim 4, is characterized in that: described burner structure also comprises secondary air channel (21), and secondary air channel (21) is communicated with mixed air cavity (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420330737.5U CN204005983U (en) | 2014-06-19 | 2014-06-19 | A kind of burner structure for gas boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420330737.5U CN204005983U (en) | 2014-06-19 | 2014-06-19 | A kind of burner structure for gas boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204005983U true CN204005983U (en) | 2014-12-10 |
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ID=52045981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420330737.5U Expired - Fee Related CN204005983U (en) | 2014-06-19 | 2014-06-19 | A kind of burner structure for gas boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204005983U (en) |
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2014
- 2014-06-19 CN CN201420330737.5U patent/CN204005983U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20141210 Termination date: 20210619 |