CN202813371U - Naturally ventilated low NOx gas burner - Google Patents
Naturally ventilated low NOx gas burner Download PDFInfo
- Publication number
- CN202813371U CN202813371U CN201220447697.3U CN201220447697U CN202813371U CN 202813371 U CN202813371 U CN 202813371U CN 201220447697 U CN201220447697 U CN 201220447697U CN 202813371 U CN202813371 U CN 202813371U
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- burner
- cylindrical shell
- refractory brick
- fuel
- flame
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Abstract
The utility model belongs to the technical field of burner application and provides a naturally ventilated low NOx gas burner. The naturally ventilated low NOx gas burner comprises a burner barrel (5), a silencing cover (6), an air door, a flame stabilizing plate (1), an incandescent lighteverlasting light (4), fuel guns (3) and refractory bricks (2); the inner cavity of the burner barrel (5) is a combustion air channel (8); the lower part of the burner barrel (5) is positioned in the silencing cover (6), and the upper part of the burner barrel (5) is communicated with a flame path (9) in the middle of the refractory bricks; and a gap between the burner barrel (5) and a barrel of the silencing cover (6) is communicated with the combustion air channel (8) to form a U-shaped baffling channel. The utility model has the characteristics that the burner has a simple structure, the inlet air is distributed uniformly, combustion flame is rigid and straight but not instable, the combustion is full and NOx emission is effectively controlled, and an effect of integrating energy conservation, environmental protection friendliness and high efficiency is achieved.
Description
Technical field
The utility model belongs to the burner application technical field, relates generally to a kind of low Nox gas burner of gravity-flow ventilation.
Background technology
Along with the development of the combustion technology of industrial tube furnace burner and the day by day raising of environmental requirement.Reduce NO
XDischarge value becomes current measurement burner technical target of the product.
Usually burner reduces NO
XGenerally adopt air classification or fuel staging technology; Air classification is by repeatedly allocating stage by stage combustion air into, make fuel be in advance imperfect combustion in the reducing atmosphere in the first area, suppressing NO
XGeneration.Completing combustion in the environment of later stage fuel oxygen excess in the second or the 3rd zone.Air by surplus reduces the generation that regional flame temperature reduces NOX.Fuel staging is feed fuels stage by stage, allows per stage have a large amount of air to participate in burning and reducing this regional temperature.Flame region is large simultaneously, reduces the flame high-temperature region.Reach and reduce NO
XPurpose.
But in order to realize above-mentioned air classification and fuel staging, the burner structure more complicated, not only production cost is high, and gives and make and use and all cause a lot of inconvenience.
The utility model content
The purpose of this utility model is the low NO that proposes a kind of gravity-flow ventilation
XGas burner, it is simple in structure that it is had, the air intake distributed uniform, combustion flame upright and outspoken not unstable, flame is more stable, it is more abundant to burn, NO
XThe characteristics that discharging is effectively controlled, the effect that reach energy-saving and environmental protection, efficiently is integrated.
The utility model adopts following technical scheme for finishing above-mentioned purpose:
A kind of low NO of gravity-flow ventilation
XGas burner, described low NO
XGas burner includes burner cylindrical shell, silencer cover, air door, steady flame plate, altar lamp, fuel gun and refractory brick;
The inner chamber of described burner cylindrical shell is the combustion air passage; The top of described burner cylindrical shell is connected with the quirk at refractory brick center; The bottom of described burner cylindrical shell is positioned at silencer cover, and described burner cylindrical shell and the coaxial setting of silencer cover; The barrel diameter of described silencer cover is greater than the diameter of burner cylindrical shell; Gap between the cylindrical shell of described burner cylindrical shell and silencer cover is connected with described combustion air passage and consists of U-shaped baffling type passage;
Be provided with the air door of control combustion device cylindrical shell combustion air flow, the leading screw horizontal sliding valve board structure that described air door is served as reasons and transferred windshield plate and transfer the slight wind thick stick to consist of; Described accent windshield plate correspondence is positioned at the below of described burner cylindrical shell combustion air inlet port and is positioned at described silencer cover; Described accent windshield plate connects to be transferred the slight wind thick stick and described accent slight wind thick stick is cooperated with nut thread on being fixed on described silencer cover, consists of described air door and promote the structure that the accent windshield plate moves upward or moves downward the adjusting combustion air flow under the effect of transferring the slight wind bar.
A kind of low NO of gravity-flow ventilation
XGas burner, described refractory brick are arranged on the brick plate top of burner cylindrical shell, and described refractory brick is the cylinder of hollow structure; The center of described refractory brick has the quirk that is connected with the combustion air runner; The upper surface of described refractory brick has a plurality of projections of inwardly stretching out, a plurality of projections of described refractory brick upper surface circumferentially, and a plurality of protruding incline directions are consistent, and the incline direction of a plurality of projections is to arrange clockwise or arrange counterclockwise on the described refractory brick upper surface; Each protruding two side walls is mutually vertical; A plurality of in order to the through hole for installation fuel branched pipe being evenly distributed in of the quirk outside, and described through hole is between two adjacent projections; The top of described refractory brick outer side surface has a plurality of smoke ventilators that are uniformly distributed along the circumference.
A kind of low NO of gravity-flow ventilation
XGas burner, described burning rifle are circumferential a plurality of and be arranged in the external side of burner tube; Corresponding circumferential a plurality of burning rifles arrange annular air collecting chamber; Described annular air collecting chamber is communicated with branched fuel branched pipe, and described fuel branched pipe upper end is connected with fuel nozzle; Described fuel nozzle stretches out the upper surface of quirk; Have one or more spray orifice and spray orifices that ignite of catching fire on the described fuel nozzle; The axis of the described spray orifice that catches fire and the angle between the burner axis are 5 ~ 15 °, angle between the described side wall surface that draws flame spray orifice and refractory brick boss is 5 ~ 10 °, the described spray orifice that catches fire sprays fuel gas obliquely along the burner axis direction, the catch fire fuel of spray orifice ejection of the adjacent shower nozzle that ignites, the flame that the fuel combustion of spray orifice 17 ejections of catching fire forms is the main flame of burner.
The low NO of a kind of gravity-flow ventilation that the utility model proposes
XGas burner, adopt technique scheme to have following beneficial effect:
1) burner silencer cover and burner tube body form U-shaped baffling type passage in the utility model, effective control combustion device noise, and combustion noise can be controlled at below 50 decibels.Be better than 80 decibels of control of traditional side air inlet burner index.
2) air door adopts leading screw horizontal sliding valve board structure in the utility model.Can realize step-less adjustment, transfer windshield plate and burner cylindrical shell lower surface can guarantee equidistant adjusting, air bias current can not occur after entering burner, and the upright and outspoken stable boiler tube that do not add of burner flame is transferred between windshield plate and the sealing surface and can be realized pre-tightening seal, reaches zero and reveals.
3) the burner cylindrical shell is simple in structure, saves manufacturing cost, is convenient to regular maintenance.Combustion air evenly enters the burner cylindrical shell around the burner cylindrical shell, air is evenly smooth in the cylindrical shell, and not bias current so that flame combustion is more upright and more outspoken, has been avoided flame to produce deflection because air velocity is uneven and added the phenomenon of burning boiler tube;
4) fuel gun adopts the method for the adjacent fuel nozzle that mutually ignites successively to improve the stability of flame combustion, fuel gas arrives fuel nozzle by branched fuel branched pipe, have one or more spray orifices and draw the flame spray orifice of catching fire on the shower nozzle, the fuel gas that draws the ejection of flame spray orifice sprays to adjacent fuel nozzle along the refractory brick inwall, draw the fuel of flame spray orifice ejection along hot refractory brick inwall burning, the fuel gas that the adjacent shower nozzle that ignites simultaneously sprays, a plurality of fuel nozzles ignite successively mutually, draw the flame spray orifice and continuous flame front of flame formation of the fuel combustion of the spray orifice ejection of catching fire, flame combustion is more stable, fiery phenomenon can not occur taking off.The flame front of wide cut is not so that there is the localized hyperthermia district in flame, the fuel that draws simultaneously the ejection of flame hole forms negative pressuren zone at the fuel nozzle position, inner flue gas of the stove is introduced in the inner quirk of refractory brick by the through hole on the refractory brick, has reduced flame temperature, has effectively controlled the generation of thermodynamics NOx.For guaranteeing that low pollution emission plays vital effect.
5) arrange in order to change the original flow direction of combustion air in the quirk of refractory brick, form the steady flame plate of smoke backflow in the flame kernel district, steady flame plate can make air form above it a recirculating zone by quirk the time, and it is more abundant that the air of backflow mixes with fuel gas, reduces the flame lifting phenomenon.Can make combustion flame more stable.
6) the number of openings and opening diameter come the pressure drop of control combustion device on the diameter that burner described in the utility model can be by adjusting steady flame plate and the plate, steady flame plate is demountable structure, changes easy to adjustly, can satisfy the requirement of various stove negative pressure, adaptability is wider
7) this burner is compared with conventional burners, and the NOx growing amount can be reduced to 30ppm in the flue gas.
The low NO of a kind of gravity-flow ventilation that the utility model proposes in sum,
XGas burner, have simple in structure, the air intake distributed uniform, combustion flame upright and outspoken not unstable, flame is more stable, it is more abundant to burn, NO
XThe characteristics that discharging is effectively controlled, the effect that reached energy-saving and environmental protection, efficiently is integrated.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the top view of Fig. 1.
Fig. 3 is schematic three dimensional views of the present utility model.
Fig. 4 is the schematic diagram of fuel distribution in the utility model.
Fig. 5 is the structural representation of fuel nozzle in the utility model.
Among the figure: 1, steady flame plate, 2, refractory brick, 3, fuel gun, 4, altar lamp, 5, the burner cylindrical shell, 6, silencer cover, 7, transfer windshield plate, 8, the combustion air runner, 9, quirk, 10, transfer the slight wind thick stick, 11, the cylindrical shell lower edge, 12, smoke ventilator, 13, fuel nozzle, 14, the fuel branched pipe, 15, mounting flange, 16, annular air collecting chamber, 17, the spray orifice that catches fire, 18, draw the flame spray orifice.
The specific embodiment
With specific embodiment the utility model is illustrated by reference to the accompanying drawings:
As shown in Figure 1 and Figure 2, a kind of low NO of gravity-flow ventilation
XGas burner, described low NO
XGas burner includes burner cylindrical shell 5, silencer cover 6, air door, steady flame plate 1, altar lamp 4, fuel gun 3 and refractory brick 2; Described burner cylindrical shell 5 is cylindric or the metal cylinder of square tube shape structure, and the inner chamber of described burner cylindrical shell 5 is combustion air passage 8; The bottom of described burner cylindrical shell 5 is positioned at silencer cover 6, and top is connected with the quirk 9 at refractory brick center; Described silencer cover 6 be cylindric or the metal tape of square tube shape structure at the bottom of cylindrical shell, and the barrel diameter of described silencer cover 6 is greater than the diameter of burner cylindrical shell 5; Gap between the cylindrical shell of described burner cylindrical shell 5 and silencer cover 6 is connected with described combustion air passage 8 and consists of U-shaped baffling type passage, and U-shaped baffling type passage is the noise of control combustion device effectively;
Be provided with the air door of control combustion device cylindrical shell combustion air flow, the leading screw horizontal sliding valve board structure that described air door is served as reasons and transferred windshield plate 7 and transfer slight wind thick stick 10 to consist of; Described accent windshield plate 7 correspondences are positioned at the below of described burner cylindrical shell combustion air inlet port and are positioned at described silencer cover; Described accent windshield plate 7 connects to be transferred slight wind thick sticks 10 and described accent slight wind thick stick 10 is cooperated with nut thread on being fixed on described silencer cover, consists of the structure that described accent windshield plate moves upward under the effect of accent slight wind bar or moves downward the adjusting combustion air flow.Adopt leading screw horizontal sliding valve board structure can realize step-less adjustment, transfer between windshield plate 7 and the burner cylindrical shell lower surface and can equidistantly regulate, air bias current can not occur after entering burner, the upright and outspoken stable boiler tube that do not add of burner flame; Transfer between windshield plate 7 and the burner cylindrical shell lower surface and can realize pre-tightening seal, reach zero and reveal;
In conjunction with Fig. 3, described refractory brick 2 is arranged on the brick plate top of burner cylindrical shell 5, and described refractory brick 2 is the cylinder of hollow structure; The center of described refractory brick 2 has the quirk 9 that is connected with combustion air runner 8; The upper surface of described refractory brick 2 has a plurality of projections of inwardly stretching out, a plurality of projections of described refractory brick 2 upper surfaces circumferentially, and the incline direction of a plurality of projections is consistent, and the incline direction of a plurality of projections is to arrange clockwise or arrange counterclockwise on described refractory brick 2 upper surfaces; Each protruding two side walls is mutually vertical; A plurality of in order to the through hole for installation fuel gas branched pipe 14 being evenly distributed in of quirk 8 outsides, and described through hole is between two adjacent projections; The top of described refractory brick 2 outer side surfaces has a plurality of smoke ventilators that are uniformly distributed along the circumference 12, the effect of smoke ventilator is: fuel produces negative pressure in the quirk internal combustion, refractory brick outside inner flue gas of the stove is under this suction function, it is inner to be introduced into the refractory brick quirk by smoke ventilator, reduces the flame zone temperature; The spray orifice 17 that catches fire sprays fuel gas obliquely along the burner axis direction, draw flame spray orifice 18 along the oblique top that sprays to adjacent fuel nozzle of refractory brick one side wall surface, the ignite fuel of spray orifice 17 ejection of catching fire of adjacent shower nozzle fuel, the flame that the fuel combustion of the spray orifice that catches fire ejection forms is the main flame of burner.
In conjunction with Fig. 1, the center of described quirk 9 arranges in order to change the original flow direction of combustion air, forms the steady flame plate 1 in smoke backflow district in the flame kernel district, the platy structure of described steady flame plate 1 for having a plurality of holes or atresia; Described steady flame plate 1 is installed in by standing screw on the brick plate of burner cylindrical shell, and the air in the smoke backflow district and fuel mix are for smooth combustion creates favorable conditions.
In conjunction with Fig. 4, Fig. 5, described burning rifle 3 is for circumferential a plurality of and be arranged in the external side of burner tube; Corresponding circumferential a plurality of burning rifles arrange annular air collecting chamber 6; Described annular air collecting chamber 6 is communicated with branched fuel branched pipe 14, and described fuel branched pipe 14 upper ends are connected with fuel nozzle 13; Described fuel nozzle 13 stretches out the upper surface of quirk; Have one or more spray orifice 17 and spray orifices 18 that ignite of catching fire on the described fuel nozzle 13; The axis of the described spray orifice 17 that catches fire and the angle between the burner axis are 5 ~ 15 °, angle between the described side wall surface that draws flame spray orifice 18 and refractory brick boss is 5 ~ 10 °, the described spray orifice that catches fire sprays fuel gas obliquely along the burner axis direction, the catch fire fuel of spray orifice ejection of the adjacent shower nozzle that ignites, the flame that the fuel combustion of spray orifice 17 ejections of catching fire forms is the main flame of burner.The circular ring structure that described annular air collecting chamber 16 is formed in one or be the circular ring structure that two semicircular ring consist of; The fuel inlet of described burning rifle 3 is connected with described annular air collecting chamber 13 respectively.
Said burner in use, fuel enters fuel gun 3, by fuel nozzle 13 ejection, a part of fuel sprays to the fuel nozzle that closes on by drawing flame spray orifice 18 along the quirk tangential direction, simultaneously low-temperature flue gas in the stove is introduced the combustion zone and reduces flame temperature; Another part fuel is along the upwards ejection of burner axis direction, with larger jet velocity above the quirk 9 of refractory brick 2 with combustion air mixed combustion; Fully mixed combustion in fuel and the air smoke backflow district above steady flame plate 1; The smoke backflow of flame internal reflux and flame outside so that flame temperature be effectively suppressed, so thermodynamics Nox is effectively controlled.
Claims (3)
1. the low NO of a gravity-flow ventilation
XGas burner, described low NO
XGas burner includes burner cylindrical shell (5), silencer cover (6), air door, steady flame plate (1), altar lamp (1), fuel gun (3) and refractory brick (2);
The inner chamber of described burner cylindrical shell (5) is the combustion air passage; The top of described burner cylindrical shell is connected with the quirk (9) at refractory brick center; The bottom of described burner cylindrical shell is positioned at silencer cover (6), and described burner cylindrical shell (5) and the coaxial setting of silencer cover (6); Gap between the cylindrical shell of described burner cylindrical shell and silencer cover is connected with described combustion air passage and consists of U-shaped baffling type passage;
Be provided with the air door of control combustion device cylindrical shell combustion air flow, the leading screw horizontal sliding valve board structure that described air door is served as reasons and transferred windshield plate (7) and transfer slight wind thick stick (10) to consist of; Described accent windshield plate (7) correspondence is positioned at the below of described burner cylindrical shell combustion air inlet port and is positioned at described silencer cover (6); Described accent windshield plate (7) connect to transfer slight wind thick stick (10) and make described accent slight wind thick stick (10) and be fixed on described silencer cover on nut thread cooperates, consist of described air door and under the effect of transferring the slight wind bar, promote the structure that the accent windshield plate moves upward or moves downward the adjusting combustion air flow.
2. the low NO of a kind of gravity-flow ventilation according to claim 1
XGas burner is characterized in that: described refractory brick (2) is arranged on the brick plate top of burner cylindrical shell (5), and described refractory brick (2) is the cylinder of hollow structure; The center of described refractory brick has the quirk (9) that is connected with the combustion air runner; The upper surface of described refractory brick has a plurality of projections of inwardly stretching out, a plurality of projections of described refractory brick upper surface circumferentially, and a plurality of protruding incline directions are consistent, and the incline direction of a plurality of projections is to arrange clockwise or arrange counterclockwise on the described refractory brick upper surface; Each protruding two side walls is mutually vertical; A plurality of in order to the through hole for installation fuel branched pipe (14) being evenly distributed in of the quirk outside, and described through hole is between two adjacent projections; The top of described refractory brick outer side surface has a plurality of smoke ventilators that are uniformly distributed along the circumference.
3. the low NO of a kind of gravity-flow ventilation according to claim 1
XGas burner is characterized in that: described burning rifle (3) is for circumferential a plurality of and be arranged in the external side of burner tube; Corresponding circumferential a plurality of burning rifles arrange annular air collecting chamber (16); Described annular air collecting chamber (16) is communicated with branched fuel branched pipe (14), and described fuel branched pipe (14) upper end is connected with fuel nozzle (13); The upper surface that described fuel nozzle (13) stretches out quirk; Have one or more spray orifices that catch fire (17) and the spray orifice that ignites (18) on the described fuel nozzle; The axis of the described spray orifice that catches fire (17) and the angle between the burner axis are 5 ~ 15 °, and the angle between the described side wall surface that draws flame spray orifice (18) and refractory brick boss is 5 ~ 10 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220447697.3U CN202813371U (en) | 2012-09-05 | 2012-09-05 | Naturally ventilated low NOx gas burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220447697.3U CN202813371U (en) | 2012-09-05 | 2012-09-05 | Naturally ventilated low NOx gas burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202813371U true CN202813371U (en) | 2013-03-20 |
Family
ID=47872236
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220447697.3U Expired - Lifetime CN202813371U (en) | 2012-09-05 | 2012-09-05 | Naturally ventilated low NOx gas burner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202813371U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106122956A (en) * | 2016-06-07 | 2016-11-16 | 上海凌云瑞升燃烧设备有限公司 | A kind of full pre-mixing apparatus of low NO |
| CN106931437A (en) * | 2017-03-28 | 2017-07-07 | 长沙理工大学 | A kind of low NOx gas burners with air conducting cover |
-
2012
- 2012-09-05 CN CN201220447697.3U patent/CN202813371U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106122956A (en) * | 2016-06-07 | 2016-11-16 | 上海凌云瑞升燃烧设备有限公司 | A kind of full pre-mixing apparatus of low NO |
| CN106931437A (en) * | 2017-03-28 | 2017-07-07 | 长沙理工大学 | A kind of low NOx gas burners with air conducting cover |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 471003 No. 8, Yan Guang road, high and new technology development zone, Luoyang, Henan Patentee after: LUOYANG RUICHANG ENVIRONMENTAL ENGINEERING Co.,Ltd. Address before: 471003 No. 8, Yan Guang road, high and new technology development zone, Luoyang, Henan Patentee before: LUO YANG RUICHANG PETRO-CHEMICAL EQUIPMENT Co.,Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130320 |