CN204114940U - The ultralow nitrogen oxide burner of a kind of combustion gas fractional combustion - Google Patents
The ultralow nitrogen oxide burner of a kind of combustion gas fractional combustion Download PDFInfo
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- CN204114940U CN204114940U CN201420563045.5U CN201420563045U CN204114940U CN 204114940 U CN204114940 U CN 204114940U CN 201420563045 U CN201420563045 U CN 201420563045U CN 204114940 U CN204114940 U CN 204114940U
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Abstract
The utility model discloses the ultralow nitrogen oxide burner of a kind of combustion gas fractional combustion, comprise furnace plate, igniter and combustion chamber, described combustion chamber is connected with air fuel gas blender by pipeline, described air fuel gas blender is provided with air intlet and the first fuel gas inlet, described air intlet place is provided with mass air flow sensor, described first fuel gas inlet place is provided with the first gas valve group, side, described combustion chamber is also provided with the second fuel gas inlet, described second fuel gas inlet place is provided with the second gas valve group, described first gas valve group comprises the first gas consumption adjusting valve, described second gas valve group comprises the second gas consumption adjusting valve, the signal transmitting terminal of described mass air flow sensor connects the first gas consumption adjusting valve and the second gas consumption adjusting valve respectively.The utility model can realize the correct proportioning of air-fuel ratio; Thus can guarantee that air and combustion gas fully mix, carry out fractional combustion simultaneously, mist is burnt more abundant, reduce nitrogen oxide emission.
Description
Technical field
The utility model relates to a kind of burner, particularly relates to the ultralow nitrogen oxide burner of a kind of combustion gas fractional combustion.
Background technology
The general air of the ultralow nitrogen oxide burner of existing combustion gas fractional combustion and combustion gas are delivered to combustion chamber and are lighted a fire after mixing; and the mixing of air and combustion gas often can cause mixing abundant not because of reasons such as the flow direction or incorporation times; therefore the waste of combustion gas can be produced; and the more difficult control of ratio of air and combustion gas in the mist of general premix burner; and the extraneous factor such as burner hearth back pressure, stack friction, draft also can have an impact to burning; thus cause burning insufficient, increase the discharge capacity of nitrogen oxide.
Utility model content
The utility model is in order to solve defect and the deficiency of the existence of above-mentioned prior art, provide one and can guarantee that air and combustion gas fully mix, simultaneously can according to air flow control gas flow, ensure that the ratio of air and combustion gas is reasonable, carry out fractional combustion, mist is burnt more abundant, reduce the ultralow nitrogen oxide burner of combustion gas fractional combustion of nitrogen oxide emission.
The technical solution of the utility model: the ultralow nitrogen oxide burner of a kind of combustion gas fractional combustion, comprise furnace plate, be arranged on the igniter on furnace plate and combustion chamber, described combustion chamber is connected with air fuel gas blender by pipeline, described air fuel gas blender is provided with air intlet and the first fuel gas inlet, described air intlet place is provided with mass air flow sensor, described first fuel gas inlet place is provided with the first gas valve group, side, described combustion chamber is also provided with the second fuel gas inlet, described second fuel gas inlet place is provided with the second gas valve group, described air intlet is vertical with the first fuel gas inlet to be arranged, described first gas valve group comprises the first gas electromagnetic valve and the first gas consumption adjusting valve, described second gas valve group comprises the second gas electromagnetic valve and the second gas consumption adjusting valve, the signal transmitting terminal of described mass air flow sensor connects the first gas consumption adjusting valve and the second gas consumption adjusting valve respectively.
The utility model provides two control signals separately in parallel to the first gas consumption adjusting valve and the second gas consumption adjusting valve by controlling mass air flow sensor, control once with the gas flow of second-time burning, to realize the correct proportioning of air-fuel ratio; Thus can guarantee that air and combustion gas fully mix, according to air flow control gas flow, can ensure that the ratio of air and combustion gas is reasonable, carry out fractional combustion simultaneously, mist is burnt more abundant, reduce nitrogen oxide emission.
Primary combustion excess air factor α >=1.4 in the utility model, reduce flame front temperature, make formation of nitrogen oxides≤5ppm; Second-time burning makes excess air factor≤1.15 of flue gas, and still can keep ultralow nitrogen oxide emission.
Preferably, described air fuel gas blender is hollow cylindrical, described first fuel gas inlet place is provided with first and enters Gas Pipe, described first gas valve group is arranged on first and enters in Gas Pipe, described first enters Gas Pipe end vertical is welded with double-deck seamless steel pipe, described first enters Gas Pipe end penetrates in air fuel gas blender and makes double-deck seamless steel pipe be positioned in the middle part of air fuel gas blender, described double-deck seamless steel pipe and air fuel gas blender are coaxially arranged, outer seamless steel pipe with form blast tube and first between internal layer seamless steel pipe and enter Gas Pipe and be communicated with, outer seamless steel pipe and air fuel gas mixer inner walls form outer air duct, air channel in internal layer seamless steel pipe inside is formed.
This kind of structure makes blast tube between outer air duct and interior air channel, and what air and combustion gas were mixed in air fuel gas blender is more fully reliable; In the utility model, outer air duct, interior air channel and blast tube are annular channel.
Preferably, described air fuel gas blender side is provided with centrifugal blower, and the suction opeing of centrifugal blower is communicated with air fuel gas blender, and the air outlet of centrifugal blower is by pipeline and combustion chamber.
This kind of structure makes air and combustion gas mix more fully reliably in air fuel gas blender, also facilitates mist to be sent in combustion chamber from air fuel gas blender simultaneously.
Preferably, described Inner Wall of Combustion Chamber is evenly distributed with the radial cloth vent hole arranged.
The setting of the utility model radial cloth vent hole on Inner Wall of Combustion Chamber, axial force and radial load distributional effects is had after making gaseous mixture enter combustion chamber, make mixture gas miscarry raw rotation to reach the object that gaseous mixture mixes further, make the mixing of gaseous mixture more fully thoroughly.
Preferably, described combustion chamber is provided with spark arrester, and spark arrester is the back-fire relief pipe of a band wire netting, and described spark arrester is fixed on gas outlet and the air inlet pipe of isolated combustion chamber on furnace plate.
In the utility model, arranging of spark arrester can prevent from flame from being gone here and there in combustion chamber by gas outlet, combustion chamber being communicated with air inlet pipe, thus solves the problem of burning tempering.
The utility model provides two control signals separately in parallel to the first gas consumption adjusting valve and the second gas consumption adjusting valve by controlling mass air flow sensor, control once with the gas flow of second-time burning, to realize the correct proportioning of air-fuel ratio; Thus can guarantee that air and combustion gas fully mix, according to air flow control gas flow, can ensure that the ratio of air and combustion gas is reasonable, carry out fractional combustion simultaneously, mist is burnt more abundant, reduce nitrogen oxide emission.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the first structural representation entering Gas Pipe and air fuel gas blender in the utility model;
Fig. 3 is the structural representation of Inner Wall of Combustion Chamber in the utility model.
1. air fuel gas blenders in figure, 2. combustion chamber, 3. furnace plate, 4. mass air flow sensor, 5. first enters Gas Pipe, 6. centrifugal blower, 7. spark arrester, 8. igniter, 9. outer air duct, 10. air channel in, 11. blast tubes, 12. second enter Gas Pipe, 13. double-deck seamless steel pipes, 14. first gas electromagnetic valves, 15. first gas consumption adjusting valves, 16. second gas electromagnetic valves, 17. second gas consumption adjusting valves, 18. cloth vent holes, a. air inlet, b. direction is injected in two combustion gas, c. flue gas direction, d. air volume test control signal one, e. wind direction detection control signal two.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail, but is not the restriction to the utility model protection domain.
As illustrated in fig. 1 and 2, the ultralow nitrogen oxide burner of a kind of combustion gas fractional combustion, comprise furnace plate 3, be arranged on the igniter 8 on furnace plate 3 and combustion chamber 2, combustion chamber 2 is connected with air fuel gas blender 1 by pipeline, air fuel gas blender 1 is provided with air intlet and the first fuel gas inlet, air intlet place is provided with mass air flow sensor 4, first fuel gas inlet place is provided with the first gas valve group, side, combustion chamber 2 is also provided with the second fuel gas inlet, second fuel gas inlet place is provided with the second gas valve group, air intlet is vertical with the first fuel gas inlet to be arranged, first gas valve group comprises the first gas electromagnetic valve 14 and the first gas consumption adjusting valve 15, second gas valve group comprises the second gas electromagnetic valve 16 and the second gas consumption adjusting valve 17, the signal transmitting terminal of mass air flow sensor 4 connects the first gas consumption adjusting valve 16 and the second gas consumption adjusting valve 17(respectively and controls by the air flow rate signal of mass air flow sensor the gas quantity that the first gas consumption adjusting valve and the second gas consumption adjusting valve regulate primary combustion and second-time burning to adopt).Air fuel gas blender 1 is in hollow cylindrical, first fuel gas inlet place is provided with first and enters Gas Pipe 5, first gas valve group is arranged on first and enters in Gas Pipe 5, first enters Gas Pipe 5 end vertical is welded with double-deck seamless steel pipe 13, first enters Gas Pipe 5 end penetrates in air fuel gas blender 1 and makes double-deck seamless steel pipe 13 be positioned in the middle part of air fuel gas blender 1, double-deck seamless steel pipe 13 is coaxially arranged with air fuel gas blender 1, outer seamless steel pipe with form blast tube 11 and first between internal layer seamless steel pipe and enter Gas Pipe 5 and be communicated with, outer seamless steel pipe and air fuel gas blender 1 inwall form outer air duct 9, air channel 10 in internal layer seamless steel pipe inside is formed.Air fuel gas blender 1 side is provided with centrifugal blower 6, and the suction opeing of centrifugal blower 6 is communicated with air fuel gas blender 1, and the air outlet of centrifugal blower 6 is communicated with combustion chamber 2 by pipeline.Combustion chamber 2 is provided with spark arrester 7, and spark arrester 7 is the back-fire relief pipe of a band wire netting, and spark arrester 7 is fixed on gas outlet and the air inlet pipe of 3 isolated combustion chambers 2 on furnace plate.
The utility model air flow gauge is orifice flowmeter.
As shown in Figure 3, combustion chamber 2 inwall is evenly distributed with the radial cloth vent hole 18 arranged.
During utility model works, air enters air fuel gas blender, air mass flow is measured by air mass flow, mass air flow sensor exports two air mass flow detection control signals in parallel separately, control signal control respectively the first gas consumption adjusting valve and the second gas consumption adjusting valve regulate once with the gas quantity of second-time burning, realize primary combustion excess air factor α >=1.4, reduce the sharp side temperature of combustion flame, to reach the effect reducing discharged nitrous oxides; Gaseous mixture enters before burner hearth carries out second-time burning by combustion chamber, forms High Rotation Speed and flows through the air-flow on spark arrester surface, promoting gas and vapor permeation, through excess air factor α≤1.15 of second-time burning flue gas, and still can keep the minimum discharge amount of nitrogen oxide.
The utility model air flow gauge, centrifugal exhaust fan are the product purchased on the market, therefore do not describe in detail, and the air flow rate signal that mass air flow sensor records sends gas consumption adjusting valve to by signal transmission line, gas consumption adjusting valve, by the air-fuel ratio of setting in advance, realizes control and the adjustment of gas flow; Wherein gas consumption adjusting valve also has for what purchase on the market the product arranging function.
The utility model provides two control signals separately in parallel to the first gas consumption adjusting valve and the second gas consumption adjusting valve by controlling mass air flow sensor, control once with the gas flow of second-time burning, to realize the correct proportioning of air-fuel ratio; Thus can guarantee that air and combustion gas fully mix, according to air flow control gas flow, can ensure that the ratio of air and combustion gas is reasonable, carry out fractional combustion simultaneously, mist is burnt more abundant, reduce nitrogen oxide emission.
Claims (5)
1. the ultralow nitrogen oxide burner of combustion gas fractional combustion, comprise furnace plate, be arranged on the igniter on furnace plate and combustion chamber, it is characterized in that: described combustion chamber is connected with air fuel gas blender by pipeline, described air fuel gas blender is provided with air intlet and the first fuel gas inlet, described air intlet place is provided with mass air flow sensor, described first fuel gas inlet place is provided with the first gas valve group, side, described combustion chamber is also provided with the second fuel gas inlet, described second fuel gas inlet place is provided with the second gas valve group, described air intlet is vertical with the first fuel gas inlet to be arranged, described first gas valve group comprises the first gas electromagnetic valve and the first gas consumption adjusting valve, described second gas valve group comprises the second gas electromagnetic valve and the second gas consumption adjusting valve, the signal transmitting terminal of described mass air flow sensor connects the first gas consumption adjusting valve and the second gas consumption adjusting valve respectively.
2. the ultralow nitrogen oxide burner of a kind of combustion gas fractional combustion according to claim 1, it is characterized in that: described air fuel gas blender is hollow cylindrical, described first fuel gas inlet place is provided with first and enters Gas Pipe, described first gas valve group is arranged on first and enters in Gas Pipe, described first enters Gas Pipe end vertical is welded with double-deck seamless steel pipe, described first enters Gas Pipe end penetrates in air fuel gas blender and makes double-deck seamless steel pipe be positioned in the middle part of air fuel gas blender, described double-deck seamless steel pipe and air fuel gas blender are coaxially arranged, outer seamless steel pipe with form blast tube and first between internal layer seamless steel pipe and enter Gas Pipe and be communicated with, outer seamless steel pipe and air fuel gas mixer inner walls form outer air duct, air channel in internal layer seamless steel pipe inside is formed.
3. the ultralow nitrogen oxide burner of a kind of combustion gas fractional combustion according to claim 2, it is characterized in that: described air fuel gas blender side is provided with centrifugal blower, the suction opeing of centrifugal blower is communicated with air fuel gas blender, and the air outlet of centrifugal blower is by pipeline and combustion chamber.
4. the ultralow nitrogen oxide burner of a kind of combustion gas fractional combustion according to claim 3, is characterized in that: described Inner Wall of Combustion Chamber is evenly distributed with the radial cloth vent hole arranged.
5. the ultralow nitrogen oxide burner of a kind of combustion gas fractional combustion according to claim 1, it is characterized in that: described combustion chamber is provided with spark arrester, spark arrester is the back-fire relief pipe of a band wire netting, and described spark arrester is fixed on gas outlet and the air inlet pipe of isolated combustion chamber on furnace plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420563045.5U CN204114940U (en) | 2014-09-28 | 2014-09-28 | The ultralow nitrogen oxide burner of a kind of combustion gas fractional combustion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420563045.5U CN204114940U (en) | 2014-09-28 | 2014-09-28 | The ultralow nitrogen oxide burner of a kind of combustion gas fractional combustion |
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| Publication Number | Publication Date |
|---|---|
| CN204114940U true CN204114940U (en) | 2015-01-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420563045.5U Expired - Fee Related CN204114940U (en) | 2014-09-28 | 2014-09-28 | The ultralow nitrogen oxide burner of a kind of combustion gas fractional combustion |
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| CN (1) | CN204114940U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104266186A (en) * | 2014-09-28 | 2015-01-07 | 力聚热力设备科技有限公司 | Gas staged combustion super-low nitrogen oxide emission combustor |
-
2014
- 2014-09-28 CN CN201420563045.5U patent/CN204114940U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104266186A (en) * | 2014-09-28 | 2015-01-07 | 力聚热力设备科技有限公司 | Gas staged combustion super-low nitrogen oxide emission combustor |
| CN104266186B (en) * | 2014-09-28 | 2017-02-01 | 力聚热力设备科技有限公司 | Gas staged combustion super-low nitrogen oxide emission combustor |
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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: 20150121 Termination date: 20180928 |