CN219775720U - Graded stable combustion disk for gas boiler - Google Patents
Graded stable combustion disk for gas boiler Download PDFInfo
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- CN219775720U CN219775720U CN202320518198.7U CN202320518198U CN219775720U CN 219775720 U CN219775720 U CN 219775720U CN 202320518198 U CN202320518198 U CN 202320518198U CN 219775720 U CN219775720 U CN 219775720U
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 70
- 239000000295 fuel oil Substances 0.000 claims abstract description 24
- 238000005507 spraying Methods 0.000 claims abstract description 7
- 238000010285 flame spraying Methods 0.000 claims abstract description 6
- 239000003034 coal gas Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 abstract description 74
- 230000000694 effects Effects 0.000 abstract description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 3
- 238000009851 ferrous metallurgy Methods 0.000 abstract description 2
- 230000000087 stabilizing effect Effects 0.000 description 9
- 239000000446 fuel Substances 0.000 description 4
- 239000002737 fuel gas Substances 0.000 description 4
- 239000003921 oil Substances 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Abstract
The utility model belongs to the technical field of ferrous metallurgy, and particularly relates to a grading type stable combustion disk for a gas boiler. The center of the grading type stable combustion disk is provided with a fuel oil ignition gun, an inner-middle-outer three-layer ignition unit is uniformly distributed around the fuel oil ignition gun, and each layer of ignition unit is provided with a wind mixing blade and a plurality of independent flame spraying ports; each flaming port consists of a gas channel gas outlet and a combustion-supporting air channel gas outlet at the outer side of the gas channel gas outlet; the fire-spraying mouth of the outer layer ignition unit is positioned in the outer layer mixing blade, and the fire-spraying mouth of the middle layer ignition unit is positioned outside the middle layer mixing blade. The utility model can well realize the low nitrogen effect and stabilize the root flame.
Description
Technical Field
The utility model belongs to the technical field of ferrous metallurgy, and particularly relates to a grading type stable combustion disk for a gas boiler.
Background
The burner is an important device on a gas boiler, and is a device for spraying and mixing fuel and air in a certain mode for combustion.
The flame stabilizing disc is also called a cyclone sheet, a cyclone disc, a flame stabilizing disc and the like, and has the main functions of organizing airflow, enabling flame to be stably combusted, and is an important accessory part of the combustor. The flame stabilizing disc can enable flame to be in a certain shape in the burner, mainly enables the flame to be stabilized at one point, and is particularly important for the design of the flame stabilizing disc in order to keep the flame stable in combustion, energy-saving and environment-friendly.
In view of this, the present utility model has been made.
Disclosure of Invention
In order to solve the technical problems, the utility model improves the structure of the stable combustion disk on the burner and provides a grading stable combustion disk for a gas boiler.
The basic conception of the adopted technical scheme is as follows:
the utility model discloses a grading type stable combustion disk for a gas boiler, which is positioned at the front end of a grading type combustor, a gas diversion chamber connected with blast furnace gas is arranged at the rear end of the combustor, and the gas diversion chamber conveys gas to the stable combustion disk through a plurality of independent gas channels communicated with the gas diversion chamber; the combustion-supporting air chamber is positioned between the stable combustion disk and the gas flow-dividing chamber; the combustion-supporting air chamber conveys combustion-supporting air to the stable combustion disk through a plurality of combustion-supporting air channels; the center of the grading type stable combustion disk is provided with a fuel oil ignition gun, an inner-middle-outer three-layer ignition unit is uniformly distributed around the fuel oil ignition gun, and each layer of ignition unit is provided with a wind mixing blade and a plurality of independent flame spraying ports; each flaming port consists of a gas channel gas outlet and a combustion-supporting air channel gas outlet at the outer side of the gas channel gas outlet; the fire-spraying mouth of the outer layer ignition unit is positioned in the outer layer mixing blade, and the fire-spraying mouth of the middle layer ignition unit is positioned outside the middle layer mixing blade.
As a preferable technical scheme, the outer layer ignition unit is communicated with the direct-current wind channel; the middle layer ignition unit is communicated with the cyclone air channel, and both the direct current air channel and the cyclone air channel supply air to the combustion-supporting air chamber.
As the preferable technical scheme, the air outlet of the outer layer gas channel is flush with the air outlet of the direct current air channel and is positioned at the position 8-10 cm inside the outer layer mixing blade, so that the gas and the direct current combustion air are sprayed out after being mixed in the space inside the outer layer mixing blade.
As the preferable technical proposal, the air outlet of the middle layer gas channel and the air outlet of the cyclone air channel are flush with the middle layer mixing blade, so that the gas and the combustion air are mixed at the outlet of the middle layer mixing blade.
As a preferable technical scheme, the density of the middle layer and the inner layer mixed wind blades is higher than that of the outer layer mixed wind blades.
As the preferable technical scheme, the number of the outer layer air mixing blades is 12, and the number of the outer layer flaming ports is 12.
As the preferable technical scheme, the number of the middle layer and the inner layer air mixing blades is 20, and the number of the middle layer flaming ports is 4.
As a preferable technical scheme, a direct-fired coal gas ignition gun is arranged on the middle layer ignition unit.
Compared with the prior art, the utility model has the following beneficial effects:
1. the stable combustion disk is used for the staged burner, and the gas outlet of each gas channel and the air outlet of the combustion-supporting air channel sleeved on the outer side of the gas channel form an independent flame spraying port, so that the full combustion and flame stabilization of the gas are realized.
2. The arrangement mode of staged combustion is adopted, the fuel gas and the combustion-supporting air of the outer layer ignition unit are combusted in a mixed mode, the fuel gas and the combustion-supporting air of the middle layer ignition unit are combusted in an external mixed mode, the alternating phases of the internal combustion and the external combustion are reflected, the low-nitrogen effect is well achieved, and the root flame is stable.
3. The fuel oil igniting gun takes fuel oil as a standby igniting mode so as to prevent abnormal ignition failure of the gas. The air blown out by the vent holes around the fuel oil ignition gun can prevent the gas and the combustion air in the boiler from flowing back along the burner, thereby playing a certain sealing effect.
The following describes the embodiments of the present utility model in further detail with reference to the accompanying drawings.
Drawings
In the drawings:
FIG. 1 is a front view of a prior art burner;
FIG. 2 is a side view of FIG. 1;
FIG. 3 is a schematic view of a burner of the present utility model;
FIG. 4 is a side view of FIG. 3;
FIG. 5 is a schematic view of a burner according to the present utility model.
In the figure: 1. a stable combustion disk; 2. a fuel oil ignition gun; 21. an oil inlet; 22. an air inlet; 3. a gas supply pipe; 4. a combustion-supporting air chamber; 41. a DC plenum; 411. a direct-current wind channel; 42. a cyclone air chamber; 421. a swirl wind channel; 5. a direct-fired gas ignition gun; 51. a gas inlet; 52. a combustion-supporting air inlet; 6. a gas diversion chamber; 7. a gas passage; 8. a flame spraying port; 9. a swirl plate; 10. an oil tank; 11. a vent hole; 12. an outer layer wind mixing blade; 13. middle layer wind mixing blade; 14. an air adjusting handle.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and the following embodiments are used to illustrate the present utility model.
The prior art burner is shown in fig. 1 and 2: comprises a fuel oil ignition gun 2 arranged at the axis of a blast furnace gas ignition device nozzle; a gas supply pipe 3 coaxially sleeved outside the fuel ignition gun; the stable combustion disc 1 is arranged at the front end of the fuel oil ignition gun 2; the combustion stabilizing disc 1 is communicated with the combustion supporting air chamber 4.
As shown in fig. 3 to 5, the present utility model discloses a staged combustion stabilizing plate for a gas boiler, which mainly functions to organize air flow so that flames can be stably combusted; the burner plate can shape the flame in the burner.
The novel hierarchical burner is based on providing a hierarchical burner for a gas boiler, and carries out corresponding structural improvement on a hierarchical stable combustion disk matched with the hierarchical burner, and the hierarchical burner is introduced at present, so that the structural characteristics and the technical effects of the hierarchical burner are convenient to understand.
The staged burner for the gas boiler comprises a stable combustion disk 1, a fuel oil ignition gun 2, a combustion-supporting air chamber 4, a direct-fired fuel gas ignition gun 5 and a gas diversion chamber 6;
the combustion stabilizing disc 1 is positioned at the front end of the whole equipment, the gas diversion chamber 6 connected with blast furnace gas is arranged at the rear end of the equipment, and the combustion supporting air chamber 4 is positioned between the combustion stabilizing disc 1 and the gas diversion chamber 6; the ignition end of the fuel oil ignition gun 2 passes through the gas diversion chamber 6 and the combustion-supporting air chamber 4 and is arranged at the center of the stable combustion disk 1, and the direct-fired fuel gas ignition gun 5 is positioned at one side of the fuel oil ignition gun 2. The device mainly adopts blast furnace gas as ignition fuel, can be directly ignited, is convenient and concise to ignite and realizes complete combustion of fuel; the fuel oil igniting gun 2 takes fuel oil as a standby igniting mode to prevent abnormal ignition failure of the gas.
The stable combustion disk 1 is uniformly distributed with three layers of ignition units, namely an inner layer ignition unit, a middle layer ignition unit and an outer layer ignition unit, around the fuel oil ignition gun 2, wherein the middle layer ignition unit and the outer layer ignition unit comprise a plurality of independent gas channels 7, and the rear end of the gas flow diversion chamber 6 gathers gas and then conveys the gas to the stable combustion disk 1 through each gas channel 7; the outside of each gas channel 7 is sleeved with a combustion-supporting air channel 11 communicated with the combustion-supporting air chamber 4, and the air outlet of each gas channel 7 and the air outlet of the combustion-supporting air channel 11 sleeved on the outside of the gas channel form an independent flame spraying opening 8 on the stable combustion disk 1, so that the full combustion and flame stabilization of the gas are realized.
Specifically, the combustion-supporting air chamber 4 is divided into two independent parts, namely a direct-current air chamber 41 and a cyclone air chamber 42, and a direct-current air channel 411 communicated with the direct-current air chamber 41 is arranged on the outer side of the outer-layer gas pipeline so as to provide combustion-supporting air for the outer-layer ignition unit; a cyclone air channel 421 communicated with the cyclone air chamber 42 is arranged on the outer side of the middle-layer gas pipeline so as to provide combustion air for the middle-layer ignition unit; preferably, a cyclone plate 9 is arranged in the cyclone air channel 421 at a position close to the cyclone air chamber, and combustion air of the cyclone air chamber 42 can enter the cyclone air channel 421 through the cyclone plate 9; because the direct-fired coal gas ignition gun 5 is positioned in the middle layer ignition unit, combustion supporting through swirl wind is needed; the fuel oil ignition gun 2 is positioned in the inner layer ignition unit, a plurality of ignition vent holes 11 are annularly distributed around the outer side of the inner layer ignition unit, and direct-current combustion-supporting air is sprayed out through the vent holes 11 during ignition and is mixed with fuel oil at the outlet of the fuel oil ignition gun 2 to play a role in ignition combustion-supporting, and the vent holes 11 are not ventilated any more after ignition, but are used for supporting combustion through the middle layer ignition unit and the outer layer ignition unit.
Preferably, each layer of ignition units in the stable combustion disk is provided with a wind mixing blade; the air outlet of the outer layer gas channel is level with the air outlet of the direct current air channel and is positioned at the position 8-10 cm inside the outer layer mixing blade 12, so that the gas and the direct current combustion air in the outer layer gas channel are mixed at the space inside the outer layer mixing blade 12 and then sprayed out; the air outlet of the middle-layer gas channel and the air outlet of the cyclone air channel are flush with the middle-layer air mixing blade 13, so that the gas in the middle-layer gas channel and the combustion air thereof are mixed at the outlet of the middle-layer air mixing blade; the utility model adopts the arrangement mode of staged combustion for coal gas and combustion air, adopts the staged combustion technology for the mixed combustion of the middle layer and the outer layer, and well realizes the low nitrogen effect and stabilizes the root flame. When in combustion, the flame root is positioned at a distance of 4 cm to 5 cm from the flame stabilizing disc.
Preferably, the density of the middle layer and the inner layer mixing blades is higher than that of the outer layer mixing blades, so as to ensure that the coal gas and the combustion-supporting air are fully mixed at the mixing blades during external mixing combustion; the outer layer gas and the combustion-supporting air are mixed in the stable combustion disk, so that the mixing effect is good due to the limitation of the inner space of the stable combustion disk, and the number of outer layer mixing blades can be properly reduced. Further preferably, the number of the outer layer air mixing blades is 12, the number of the outer layer flaming ports is 12, and each flaming port is arranged below the corresponding air mixing blade; the number of the middle layer and the inner layer air mixing blades is 20, and the number of the middle layer flaming ports is 4.
A gas inlet 51 and a combustion air inlet 52 are arranged on the direct-fired coal gas ignition gun 5, one part of blast furnace gas enters the direct-fired coal gas ignition gun 5 through the gas inlet 51, the other part of blast furnace gas enters the gas diversion chamber 6, and redundant gas is diffused; the fuel oil ignition gun 2 is provided with an oil inlet 21 connected with the fuel oil tank 10 and an air inlet 22 connected with fuel oil ignition atomized wind. One part of the combustion air is communicated with the combustion air chamber 4, and the other part is communicated with the direct-fired coal gas ignition gun 5 through the combustion air inlet 52.
While the utility model has been described in detail in the foregoing general description and specific examples, it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the utility model and are intended to be within the scope of the utility model as claimed.
Claims (8)
1. The staged stable combustion disk is positioned at the front end of the staged combustor, a gas diversion chamber connected with blast furnace gas is arranged at the rear end of the combustor, and the gas diversion chamber conveys gas to the stable combustion disk through a plurality of independent gas channels communicated with the gas diversion chamber; the combustion-supporting air chamber is positioned between the stable combustion disk and the gas flow-dividing chamber; the combustion-supporting air chamber conveys combustion-supporting air to the stable combustion disk through a plurality of combustion-supporting air channels; the method is characterized in that:
the center of the grading type stable combustion disk is provided with a fuel oil ignition gun, an inner-middle-outer three-layer ignition unit is uniformly distributed around the fuel oil ignition gun, and each layer of ignition unit is provided with a wind mixing blade and a plurality of independent flame spraying ports; each flaming port consists of a gas channel gas outlet and a combustion-supporting air channel gas outlet at the outer side of the gas channel gas outlet; the fire-spraying mouth of the outer layer ignition unit is positioned in the outer layer mixing blade, and the fire-spraying mouth of the middle layer ignition unit is positioned outside the middle layer mixing blade.
2. The staged combustion disk for a gas boiler as defined in claim 1, wherein: the outer ignition unit is communicated with the direct-current wind channel; the middle layer ignition unit is communicated with the cyclone air channel, and both the direct current air channel and the cyclone air channel supply air to the combustion-supporting air chamber.
3. The staged combustion disk for a gas boiler as defined in claim 2, wherein: the gas outlet of the outer layer gas channel is flush with the gas outlet of the direct current air channel, and is positioned at the position 8-10 cm inside the outer layer mixing blade, so that the gas and the direct current combustion air are sprayed out after being mixed in the space inside the outer layer mixing blade.
4. The staged combustion disk for a gas boiler as defined in claim 2, wherein: the gas outlet of the middle layer gas channel and the air outlet of the cyclone wind channel are level with the middle layer mixing blade, so that the gas and the combustion-supporting wind are mixed at the outlet of the middle layer mixing blade.
5. The staged combustion disk for a gas boiler as defined in claim 1, wherein: the density of the middle layer and the inner layer mixing blades is greater than that of the outer layer mixing blades.
6. The staged combustion disk for a gas boiler as defined in claim 5, wherein: the number of the outer layer air mixing blades is 12, and the number of the outer layer flaming ports is 12.
7. The staged combustion disk for a gas boiler as defined in claim 5, wherein: the number of the middle layer and the inner layer air mixing blades is 20, and the number of the middle layer flaming ports is 4.
8. The staged combustion disk for a gas boiler as defined in claim 1, wherein: a direct coal gas ignition gun is arranged on the middle layer ignition unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320518198.7U CN219775720U (en) | 2023-03-16 | 2023-03-16 | Graded stable combustion disk for gas boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320518198.7U CN219775720U (en) | 2023-03-16 | 2023-03-16 | Graded stable combustion disk for gas boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219775720U true CN219775720U (en) | 2023-09-29 |
Family
ID=88138007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320518198.7U Active CN219775720U (en) | 2023-03-16 | 2023-03-16 | Graded stable combustion disk for gas boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219775720U (en) |
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2023
- 2023-03-16 CN CN202320518198.7U patent/CN219775720U/en active Active
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