CN116293687B - Natural ventilation low-nitrogen burner - Google Patents
Natural ventilation low-nitrogen burner Download PDFInfo
- Publication number
- CN116293687B CN116293687B CN202310381342.1A CN202310381342A CN116293687B CN 116293687 B CN116293687 B CN 116293687B CN 202310381342 A CN202310381342 A CN 202310381342A CN 116293687 B CN116293687 B CN 116293687B
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- fixedly connected
- wall
- air
- gas
- shell
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 35
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 23
- 238000009423 ventilation Methods 0.000 title abstract description 11
- 239000007789 gas Substances 0.000 claims abstract description 50
- 239000002737 fuel gas Substances 0.000 claims abstract description 22
- 239000003245 coal Substances 0.000 claims abstract description 20
- 238000005507 spraying Methods 0.000 claims abstract description 15
- 239000003570 air Substances 0.000 claims abstract description 14
- 239000002817 coal dust Substances 0.000 claims description 20
- 239000012530 fluid Substances 0.000 claims description 11
- 230000004224 protection Effects 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 8
- 238000000926 separation method Methods 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 6
- 239000003034 coal gas Substances 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims description 4
- 239000007787 solid Substances 0.000 abstract description 14
- 239000000126 substance Substances 0.000 abstract description 4
- 239000000843 powder Substances 0.000 description 17
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 13
- 238000002485 combustion reaction Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 6
- 230000000903 blocking effect Effects 0.000 description 5
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 2
- 235000017491 Bambusa tulda Nutrition 0.000 description 2
- 241001330002 Bambuseae Species 0.000 description 2
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 2
- 239000011425 bamboo Substances 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000009979 protective mechanism Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000010405 reoxidation reaction Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D17/00—Burners for combustion conjointly or alternatively of gaseous or liquid or pulverulent fuel
- F23D17/005—Burners for combustion conjointly or alternatively of gaseous or liquid or pulverulent fuel gaseous or pulverulent fuel
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
The invention discloses a natural ventilation low-nitrogen burner, which relates to the technical field of low-nitrogen burners and comprises a uniform mechanism, wherein the uniform mechanism is arranged above the inner side surface of a fixed seat, a fan guides air into the uniform mechanism through a connecting pipe, pulverized coal, air and fuel gas are respectively introduced into the uniform mechanism, and substances with different components are fully mixed in the uniform mechanism; the air-jet type air-jet machine comprises a mechanism wall and a spiral sheet, wherein the spiral sheet guides air to change the rotation direction of the air, and the inner side surface of the mechanism wall is fixedly connected with a material-jet assembly. According to the natural ventilation low-nitrogen burner, the pulverized coal is conveyed to the gas conveying end of the gas pipe by the spraying component, the pulverized coal and the gas are impacted by the air in a guiding way through the spiral piece, the mixed components of the air, the pulverized coal and the gas are fully mixed at the position, close to the edge, of the surface of the flow guiding component, the problem that the air, the pulverized coal and the gas are ignited in the cylinder body, and the gas is sprayed out to the ignition time is insufficient, so that the gas and the solid are uniformly mixed is solved.
Description
Technical Field
The invention relates to the technical field of low-nitrogen combustors, in particular to a natural ventilation low-nitrogen combustor.
Background
The low-nitrogen oxide burner is a burner with low nitrogen oxide emission in the fuel combustion process, and the nitrogen oxide emission in the combustion process can be reduced by using the low-nitrogen oxide burner, and generally, NO generated by fuel combustion mainly comes from two aspects: firstly, the oxidation of nitrogen (combustion supporting air) in combustion air, secondly, the thermal decomposition and reoxidation of nitride in the combustion process, the most basic of the existing low-nitrogen burner technology is that a grading burner and FGR flue gas reflux technology are combined to achieve the ultralow nitrogen effect, a majority of heating furnaces in Daqing oilfield heating furnaces are negative pressure boilers of a return stroke and water pipe heating furnaces, the size of a boiler hearth is large, the flue gas after combustion is directly discharged from a chimney, the exhaust temperature is high, the thermal efficiency of the boiler is low, the boiler has two tendencies, firstly, a forced ventilation system is not provided, the nitrogen oxides are difficult to reach below 30mg/m < 3 > because the combustion is participated by the negative pressure induced draft of the boiler, and secondly, the carbon monoxide exceeds the standard because the ambient temperature in the hearth cannot reach the spontaneous combustion temperature of carbon monoxide during low-load operation.
The existing natural ventilation low-nitrogen burner has the problems that due to the structural design defect, air, coal dust and fuel gas are ignited in a cylinder body, the fuel gas is sprayed out to the ignition time is insufficient, so that the gas and the solid are uniformly mixed, and the fuel gas and the coal dust are ignited, so that carbon slag is clamped in an igniter gap, and the ignition cannot be performed.
Disclosure of Invention
The present invention provides a natural draft low nitrogen burner that solves the problems noted in the background art above.
In order to achieve the above purpose, the invention is realized by the following technical scheme: a natural draft low nitrogen burner comprising
The fixing seat is fixedly connected with a connecting pipe at the upper position of the surface of the fixing seat, one end of the connecting pipe, which is far away from the fixing seat, is fixedly connected with a fan, and a limiting table is fixedly connected at the lower position of the surface of the fan;
the uniform mechanism is arranged above the inner side surface of the fixed seat, the fan guides air into the uniform mechanism through the connecting pipe, pulverized coal, air and fuel gas are respectively introduced into the uniform mechanism, and substances with different components are fully mixed in the uniform mechanism; the device comprises a mechanism wall and a spiral sheet, wherein the spiral sheet guides air to change the rotation direction of the air, a spraying component is fixedly connected to the inner side surface of the mechanism wall, a flow guiding component is fixedly connected to the inner side surface of the mechanism wall, the spraying component quantitatively conveys pulverized coal to the position of the flow guiding component, and the air, the pulverized coal and fuel gas are impacted and mixed at the position, close to the edge, of the surface of the flow guiding component;
the protection mechanism is arranged at a position, far away from the fixed seat, of the surface of the uniform mechanism and used for guiding fluid mixed on the surface of the flow guide assembly, gas carries pulverized coal into the protection mechanism and is then ignited to spray out of the wall of the mechanism, the input end of the fan is communicated with external air, the output end of the fan is communicated with the connecting pipe, the connecting pipe conveys air into the wall of the mechanism, and the gas pipe conveys gas to a position, close to the edge, of the surface of the flow guide assembly.
Preferably, the surface of the mechanism wall is fixedly connected with the upper position of the inner side surface of the fixed seat, the inner side surface of the mechanism wall is fixedly connected with a flow separation barrel, and the inner side surface of the mechanism wall is fixedly connected with a gas pipe at a position close to the flow separation barrel.
Preferably, the material spraying component comprises a pipe body, the surface of the pipe body is fixedly connected with the middle position of the inner side surface of the mechanism wall, the inner side surface of the pipe body is rotationally connected with a screw rod, solid powder is conveyed in the pipe body, the screw rod is externally connected with driving equipment to enable the screw rod to rotate, and the screw on the surface of the screw rod enables the solid powder to be conveyed to the perforated wall.
Preferably, the surface of the pipe body is fixedly connected with an opening wall, a hole is formed in the position, close to the edge, of the opening wall, and a stirring piece is fixedly connected to one end, close to the opening wall, of the screw rod.
Preferably, the guide assembly comprises a connecting sheet, the surface of the connecting sheet is fixedly connected with the inner side surface of the mechanism wall, the middle position of the surface of the connecting sheet is fixedly connected with an arc-shaped wall, and the middle position of the inner side surface of the arc-shaped wall is fixedly connected with a guide cylinder.
Preferably, the protection mechanism comprises a flange plate, the surface fixedly connected with connecting plate of flange plate, the one end fixedly connected with that the flange plate was kept away from to the connecting plate drives the subassembly, the medial surface that drives the subassembly and the surface fixedly connected with of mechanism wall, the flight sets up in separating a class section of thick bamboo and the opposite intermediate position of mechanism wall, separates a class section of thick bamboo and separates the air, and the flight makes the air of connecting pipe input form the spiral shell rotation to wind.
Preferably, the inner side surface of the driving assembly is rotationally connected with a worm, the inner side surface of the driving assembly is fixedly connected with a blade, and the lower position of the inner side surface of the driving assembly is fixedly connected with a hiding assembly.
Preferably, the driving assembly comprises a shell, the surface of the shell is fixedly connected with one end, far away from the flange plate, of the connecting plate, and a rotating ring is rotationally connected to the inner side surface of the shell, close to the wall of the mechanism.
Preferably, one side of the rotating ring extends to the inside of the mechanism wall, the surface of the rotating ring is fixedly connected with the surface of the blade, the upper and lower positions of the inner side surface of the shell are respectively provided with an inner cavity, the worm is externally connected with rotating equipment to enable the rotating equipment to rotate, the rotating ring drives the blade to rotate, the blade rotates to enable air flow of the inner side surface of the mechanism wall to be guided to the rotating ring, and the air flow is mixed fluid of fuel gas, air and coal dust.
Preferably, grooves are formed in the surfaces of the shell and the mechanism wall, a worm wheel is fixedly connected to one side, close to the shell, of the surface of the rotating ring, and the surface of the worm wheel is meshed with the surface of the worm.
Preferably, the hidden component comprises a vent pipe, the surface of the vent pipe is fixedly connected with the lower position of the surface of the shell, the bottom of the shell is fixedly connected with a sealing plate, the top of the sealing plate is fixedly connected with an igniter, the directionality of the spiral air is stronger, the kinetic energy of the air flowing to impact coal dust and fuel gas is larger, the components are more evenly mixed, and the worm drives the blades to rotate through the driving component.
The invention provides a natural ventilation low-nitrogen burner. The beneficial effects are as follows:
1. according to the natural ventilation low-nitrogen burner, the pulverized coal is conveyed to the gas conveying end of the gas pipe by the spraying component, the pulverized coal and the gas are impacted by the air in a guiding way through the spiral piece, the mixed components of the air, the pulverized coal and the gas are fully mixed at the position, close to the edge, of the surface of the flow guiding component, the problem that the air, the pulverized coal and the gas are ignited in the cylinder body, and the gas is sprayed out to the ignition time is insufficient, so that the gas and the solid are uniformly mixed is solved.
2. This natural draft low nitrogen combustor, stirring piece throws away the hole wall through the trompil with the solid powder in the hole wall, the device is through carrying solid powder to replace current through the air current transport powder, can effectively avoid powder granule adhesion to cause the jam at the medial surface of body, after the buggy was thrown away the hole wall, spiral air current impact buggy and gas, mixed fluid striking is at the surface of arc wall for intensive mixing between the composition, simultaneously, the solid powder can be through the rotation rate ration transport buggy of change the hob.
3. This natural draft low nitrogen combustor, the top fixed connection of ring flange through bolt and boiler, the connecting plate supports driving the subassembly, and air, gas and buggy are at the surface intensive mixing back of water conservancy diversion subassembly, and axial-flow wind drives mixed material and is guided the discharge mechanism wall, hides the inside that the subassembly hidden to driving the subassembly, and the ignition head is not with buggy direct contact, has solved gas and buggy and has been lighted for the clearance clamp of some igniters has carbon residue and leads to unable problem of ignition.
4. This natural draft low nitrogen combustor, breather pipe are to the below position of casing medial surface independently let in gas, and the some firearm ignites this gas, and the closing plate can effectively avoid gas to reveal through the bottom and cause the resource loss, and the blade rotation makes the inside gas that is lighted of casing guide to the mechanism wall in for the mixed fluid of gas, air and buggy is lighted, makes some firearm and buggy direct contact and realizes the ignition.
5. The worm drives the worm wheel to rotate on the inner side surface of the shell through tooth surface engagement, gas ignited by the igniter enters the wall of the mechanism through the grooves, air impacts coal dust and gas to the surfaces of the connecting sheet and the arc wall, the blades are driven by the worm wheel to rotate, so that the mixed gas carries the coal dust to flow to the blades through the guide cylinder, and the ignited gas enables the mixed fluid to be ignited to rush out of the wall of the mechanism, so that the gas inside the boiler is ignited.
Drawings
FIG. 1 is a schematic view of the overall structure of a natural draft low nitrogen burner of the present invention;
FIG. 2 is a schematic view of the structure of the inside of the natural draft low nitrogen burner of the present invention;
FIG. 3 is a schematic structural view of the uniformity mechanism of the present invention;
FIG. 4 is a schematic view of a spray assembly according to the present invention;
FIG. 5 is a schematic view of a flow guiding assembly according to the present invention;
FIG. 6 is a schematic structural view of the protection mechanism of the present invention;
FIG. 7 is a schematic diagram of a driving assembly according to the present invention;
fig. 8 is a schematic structural view of a hidden component of the present invention.
In the figure: 1. a fixing seat; 2. a limiting table; 3. a blower; 4. a connecting pipe; 5. a uniformity mechanism; 51. a mechanism wall; 52. a gas pipe; 53. a flow separation cylinder; 54. a spiral sheet; 55. a spraying component; 551. a tube body; 552. a perforated wall; 553. a screw rod; 554. a stirring piece; 56. a flow guiding assembly; 561. a connecting sheet; 562. an arc-shaped wall; 563. a guide cylinder; 6. a protective mechanism; 61. a flange plate; 62. a connecting plate; 63. driving the assembly; 631. a housing; 632. an inner cavity; 633. a rotating ring; 634. a worm wheel; 635. slotting; 64. a worm; 65. a blade; 66. hiding the component; 661. a vent pipe; 662. a sealing plate; 663. an igniter.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1-3, the present invention provides a technical solution: a natural draft low nitrogen burner comprising
The fixing seat 1 is fixedly connected with a connecting pipe 4 at the upper position of the surface of the fixing seat 1, one end of the connecting pipe 4 away from the fixing seat 1 is fixedly connected with a fan 3, and the lower position of the surface of the fan 3 is fixedly connected with a limiting table 2;
the uniform mechanism 5 is arranged above the inner side surface of the fixed seat 1, the fan 3 guides air into the uniform mechanism 5 through the connecting pipe 4, pulverized coal, air and fuel gas are respectively introduced into the uniform mechanism 5, and substances with different components are fully mixed in the uniform mechanism 5; the device comprises a mechanism wall 51 and a spiral sheet 54, wherein the spiral sheet 54 guides air to change the rotation direction, a material spraying assembly 55 is fixedly connected to the inner side surface of the mechanism wall 51, a flow guiding assembly 56 is fixedly connected to the inner side surface of the mechanism wall 51, the material spraying assembly 55 quantitatively conveys coal dust to the position of the flow guiding assembly 56, and air, coal dust and fuel gas are impacted and mixed at the position of the surface of the flow guiding assembly 56 close to the edge;
the surface of the mechanism wall 51 is fixedly connected with the upper position of the inner side surface of the fixed seat 1, the inner side surface of the mechanism wall 51 is fixedly connected with a flow separation barrel 53, and the inner side surface of the mechanism wall 51 is fixedly connected with a gas pipe 52 at a position close to the flow separation barrel 53;
the protection mechanism 6 is arranged on the surface of the uniform mechanism 5 at a position far away from the fixed seat 1 and is used for guiding the fluid mixed on the surface of the diversion component 56, and gas carries coal dust into the protection mechanism 6 and is then ignited to spray out the mechanism wall 51.
When the air jet device is used, the input end of the fan 3 is communicated with external air, the output end of the fan 3 is communicated with the connecting pipe 4, the connecting pipe 4 conveys air into the mechanism wall 51, the gas pipe 52 conveys gas to the position, close to the edge, of the surface of the flow guiding assembly 56, the material spraying assembly 55 conveys coal dust to the gas conveying end of the gas pipe 52, the air is guided to rotate through the spiral piece 54 to impact coal dust and gas, mixed components of the air, the coal dust and the gas are fully mixed at the position, close to the edge, of the surface of the flow guiding assembly 56, the problem that the air, the coal dust and the gas are ignited in the cylinder body, and the gas is sprayed out to the position, close to the edge, of the surface of the flow guiding assembly 56, so that the gas and the solid are uniformly mixed is solved.
As shown in fig. 4 and 5, the material spraying component 55 includes a pipe body 551, the surface of the pipe body 551 is fixedly connected with the middle part of the inner side of the mechanism wall 51, the inner side of the pipe body 551 is rotationally connected with a screw rod 553, the surface of the pipe body 551 is fixedly connected with an opening wall 552, a hole is formed at the position of the opening wall 552 near the edge, one end of the screw rod 553 near the opening wall 552 is fixedly connected with a stirring sheet 554, the flow guiding component 56 includes a connecting sheet 561, the surface of the connecting sheet 561 is fixedly connected with the inner side of the mechanism wall 51, the middle part of the surface of the connecting sheet 561 is fixedly connected with an arc wall 562, and the middle part of the inner side of the arc wall 562 is fixedly connected with a flow guiding cylinder 563.
During the use, the inside of body 551 is carried there is solid powder, the external equipment that drives of hob 553 makes it rotatory, the spiral on hob 553 surface makes solid powder be carried to trompil wall 552, stir piece 554 throws away the solid powder in the trompil wall 552 through the trompil, the device is through carrying solid powder to replace current through air current transport powder, can effectively avoid powder particle adhesion to cause the jam at the medial surface of body 551, after the buggy is thrown away the hole wall 552, spiral air current impact buggy and gas, mixed fluid strikes the surface at arc wall 562 for intensive mixing between the composition, simultaneously, the buggy can be carried through the rotation rate ration of change hob 553 to solid powder.
As shown in fig. 3 and 6, the spiral piece 54 guides air to change the rotation direction, the inner side surface of the mechanism wall 51 is fixedly connected with the material spraying component 55, the inner side surface of the mechanism wall 51 is fixedly connected with the flow guiding component 56, the material spraying component 55 quantitatively conveys pulverized coal to the position of the flow guiding component 56, the inner side surface of the mechanism wall 51 is fixedly connected with the flow blocking cylinder 53, the position, close to the flow blocking cylinder 53, of the inner side surface of the mechanism wall 51 is fixedly connected with the gas pipe 52, the protection mechanism 6 comprises a flange plate 61, the surface of the flange plate 61 is fixedly connected with a connecting plate 62, one end, far from the flange plate 61, of the connecting plate 62 is fixedly connected with the driving component 63, the inner side surface of the driving component 63 is fixedly connected with the surface of the mechanism wall 51, the inner side surface of the driving component 63 is rotationally connected with a worm 64, the inner side surface of the driving component 63 is fixedly connected with a blade 65, and the lower position, close to the inner side surface of the driving component 63, of the driving component is fixedly connected with the hiding component 66.
When the air flow blocking device is used, the spiral piece 54 is arranged in the middle of the opposite surfaces of the flow blocking cylinder 53 and the mechanism wall 51, the flow blocking cylinder 53 blocks air, the spiral piece 54 enables air input by the connecting pipe 4 to form spiral rotation to wind, the surface of the flange plate 61 is fixedly connected with the top of the boiler through bolts, the connecting plate 62 supports the driving component 63, after the air, the fuel gas and the coal powder are fully mixed on the surface of the flow guiding component 56, the axial flow wind drives the mixed substances to be guided and discharged out of the mechanism wall 51, the hiding component 66 is hidden in the driving component 63, the ignition head is not in direct contact with the coal powder, and the problem that the fuel gas and the coal powder are ignited, and the igniter 663 is clamped with carbon residues in a gap to cause incapacity of ignition is solved.
As shown in fig. 6, 7 and 8, the driving assembly 63 includes a housing 631, a surface of the housing 631 is fixedly connected with one end of the connecting plate 62 away from the flange 61, a position of an inner side surface of the housing 631, which is close to the mechanism wall 51, is rotationally connected with a rotating ring 633, one side of the rotating ring 633 extends to an inside of the mechanism wall 51, a surface of the rotating ring 633 is fixedly connected with a surface of the blade 65, inner cavities 632 are respectively arranged above and below the inner side surface of the housing 631, grooves 635 are respectively arranged on the surfaces of the housing 631 and the mechanism wall 51, a worm wheel 634 is fixedly connected with one side of the surface of the rotating ring 633, a surface of the worm wheel 634 is meshed with a surface of the worm 64, the hiding assembly 66 includes a ventilation pipe 661, a surface of the ventilation pipe 661 is fixedly connected with a lower position of the surface of the housing 631, a sealing plate 662 is fixedly connected with a bottom of the housing 631, and an igniter 663 is fixedly connected with a top of the sealing plate 662.
When the device is used, the worm 64 is externally connected with rotating equipment to enable the rotating ring 633 to drive the blades 65 to rotate, the blades 65 rotate to enable air flow on the inner side face of the mechanism wall 51 to be guided to the rotating ring 633, the air flow is mixed fluid of fuel gas, air and coal dust, the air pipe 661 independently introduces the fuel gas to the lower position of the inner side face of the shell 631, the igniter 663 ignites the fuel gas, the sealing plate 662 can effectively avoid resource loss caused by leakage of the fuel gas through the bottom, the blades 65 rotate to enable the ignited gas inside the shell 631 to be guided into the mechanism wall 51, the mixed fluid of the fuel gas, the air and the coal dust is ignited, and the igniter 663 is not in direct contact with the coal dust to achieve ignition.
As shown in fig. 5 and 7, the surface of the connection piece 561 is fixedly connected with the inner side surface of the mechanism wall 51, the middle position of the surface of the connection piece 561 is fixedly connected with the arc wall 562, the middle position of the inner side surface of the arc wall 562 is fixedly connected with the guide cylinder 563, the surface of the shell 631 is fixedly connected with one end of the connection plate 62 far away from the flange plate 61, the position of the inner side surface of the shell 631 close to the mechanism wall 51 is rotationally connected with the rotating ring 633, one side of the rotating ring 633 extends to the inside of the mechanism wall 51, the surface of the rotating ring 633 is fixedly connected with the surface of the blade 65, the upper and lower positions of the inner side surface of the shell 631 are respectively provided with the inner cavity 632, the surfaces of the shell 631 and the mechanism wall 51 are respectively provided with the grooves 635, one side of the surface of the rotating ring 633 close to the shell 631 is fixedly connected with the worm wheel 634, and the surface of the worm wheel 634 is meshed with the surface of the worm 64.
During use, the directionality of the spiral wind is stronger, so that the kinetic energy of air cyclone flowing to impact coal dust and fuel gas is larger, the components are mixed more uniformly, the worm 64 drives the blade 65 to rotate through the driving component 63, the worm 64 drives the worm wheel 634 to rotate on the inner side surface of the shell 631 through tooth surface engagement, gas ignited by the igniter 663 enters the mechanism wall 51 through the grooves 635, the air impacts the coal dust and the fuel gas to the surfaces of the connecting sheet 561 and the arc wall 562, the blade 65 is driven to rotate by the worm wheel 634, the mixed air current carries the coal dust to flow to the blade 65 through the guide cylinder 563, and the ignited gas enables the mixed fluid to be ignited to be flushed out of the mechanism wall 51, so that the gas inside the boiler is ignited.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The term "comprising" an element defined by the term "comprising" does not exclude the presence of other identical elements in a process, method, article or apparatus that comprises the element.
Claims (2)
1. A natural draft low nitrogen burner, characterized by: comprising
The device comprises a fixed seat (1), wherein a connecting pipe (4) is fixedly connected to the upper position of the surface of the fixed seat (1), a fan (3) is fixedly connected to one end, far away from the fixed seat (1), of the connecting pipe (4), and a limit table (2) is fixedly connected to the lower position of the surface of the fan (3);
the uniform mechanism (5) is arranged above the inner side surface of the fixed seat (1), the fan (3) guides air into the uniform mechanism (5) through the connecting pipe (4), pulverized coal, air and fuel gas are respectively introduced into the uniform mechanism (5), and the pulverized coal, the air and the fuel gas are fully mixed in the uniform mechanism (5); the device comprises a mechanism wall (51) and a spiral sheet (54), wherein the spiral sheet (54) guides air to change the rotation direction of the air, a spraying component (55) is fixedly connected to the inner side surface of the mechanism wall (51), a diversion component (56) is fixedly connected to the inner side surface of the mechanism wall (51), the spraying component (55) quantitatively conveys pulverized coal to the position of the diversion component (56), and the air, the pulverized coal and fuel gas are impacted and mixed at the position, close to the edge, of the surface of the diversion component (56);
the protection mechanism (6) is arranged on the surface of the uniform mechanism (5) at a position far away from the fixed seat (1) and is used for guiding the fluid mixed on the surface of the flow guide assembly (56), and the gas carries coal dust into the protection mechanism (6) and is then ignited to spray out a mechanism wall (51);
the surface of the mechanism wall (51) is fixedly connected with the upper position of the inner side surface of the fixed seat (1), the inner side surface of the mechanism wall (51) is fixedly connected with a flow separation barrel (53), and the inner side surface of the mechanism wall (51) is fixedly connected with a gas pipe (52) at a position close to the flow separation barrel (53);
the material spraying assembly (55) comprises a pipe body (551), the surface of the pipe body (551) is fixedly connected with the middle position of the inner side surface of the mechanism wall (51), and the inner side surface of the pipe body (551) is rotationally connected with a screw rod (553);
the surface of the pipe body (551) is fixedly connected with an opening wall (552), a hole is formed in the position, close to the edge, of the opening wall (552), and one end, close to the opening wall (552), of the screw rod (553) is fixedly connected with a stirring sheet (554);
the guide assembly (56) comprises a connecting sheet (561), the surface of the connecting sheet (561) is fixedly connected with the inner side surface of the mechanism wall (51), the middle position of the surface of the connecting sheet (561) is fixedly connected with an arc-shaped wall (562), and the middle position of the inner side surface of the arc-shaped wall (562) is fixedly connected with a guide cylinder (563).
2. A natural draft low nitrogen burner according to claim 1 wherein: the protection mechanism (6) comprises a flange plate (61), a connecting plate (62) is fixedly connected to the surface of the flange plate (61), a driving assembly (63) is fixedly connected to one end, away from the flange plate (61), of the connecting plate (62), and the inner side surface of the driving assembly (63) is fixedly connected with the surface of the mechanism wall (51);
the inner side surface of the driving assembly (63) is rotationally connected with a worm (64), the inner side surface of the driving assembly (63) is fixedly connected with a blade (65), and the lower part of the inner side surface of the driving assembly (63) is fixedly connected with a hiding assembly (66);
the driving assembly (63) comprises a shell (631), the surface of the shell (631) is fixedly connected with one end of the connecting plate (62) far away from the flange plate (61), and a rotating ring (633) is rotationally connected to the inner side surface of the shell (631) at a position close to the mechanism wall (51);
one side of the rotating ring (633) extends into the mechanism wall (51), the surface of the rotating ring (633) is fixedly connected with the surface of the blade (65), and inner cavities (632) are arranged above and below the inner side surface of the shell (631);
the surface of the shell (631) and the surface of the mechanism wall (51) are provided with grooves (635), one side, close to the shell (631), of the surface of the rotating ring (633) is fixedly connected with a worm wheel (634), and the surface of the worm wheel (634) is meshed with the surface of the worm (64);
the hidden component (66) comprises a vent pipe (661), the surface of the vent pipe (661) is fixedly connected with the lower position of the surface of the shell (631), the bottom of the shell (631) is fixedly connected with a sealing plate (662), and the top of the sealing plate (662) is fixedly connected with an igniter (663).
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| CN202310381342.1A CN116293687B (en) | 2023-04-11 | 2023-04-11 | Natural ventilation low-nitrogen burner |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310381342.1A CN116293687B (en) | 2023-04-11 | 2023-04-11 | Natural ventilation low-nitrogen burner |
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| CN116293687A CN116293687A (en) | 2023-06-23 |
| CN116293687B true CN116293687B (en) | 2023-08-29 |
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|---|---|
| CN116293687A (en) | 2023-06-23 |
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