CN108679608A - A kind of big load boiler gas burner of ultra-low NOx emission - Google Patents

A kind of big load boiler gas burner of ultra-low NOx emission Download PDF

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Publication number
CN108679608A
CN108679608A CN201810810457.7A CN201810810457A CN108679608A CN 108679608 A CN108679608 A CN 108679608A CN 201810810457 A CN201810810457 A CN 201810810457A CN 108679608 A CN108679608 A CN 108679608A
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CN
China
Prior art keywords
rifle
inner ring
cover board
gas
ring type
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201810810457.7A
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Chinese (zh)
Inventor
游述怀
谭宏
吴时骅
田海柏
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Yueyang Mapower Thermprocess & Electromagnetic Technology Co ltd
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Yueyang Mapower Thermprocess & Electromagnetic Technology Co ltd
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Application filed by Yueyang Mapower Thermprocess & Electromagnetic Technology Co ltd filed Critical Yueyang Mapower Thermprocess & Electromagnetic Technology Co ltd
Priority to CN201810810457.7A priority Critical patent/CN108679608A/en
Publication of CN108679608A publication Critical patent/CN108679608A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23DBURNERS
    • F23D14/00Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/02Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23DBURNERS
    • F23D14/00Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46Details, e.g. noise reduction means
    • F23D14/48Nozzles
    • F23D14/58Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23DBURNERS
    • F23D14/00Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46Details, e.g. noise reduction means
    • F23D14/62Mixing devices; Mixing tubes

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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 kind of big load boiler gas burners of ultra-low NOx emission, including brazier brick, cylinder, shutter air adjustment actuator, control section, upper and lower bispin flow component, air box sealing structure component, outer ring-like gas bag rifle, inner ring type gas bag rifle part, altar lamp component, fire inspection component, flame-observing hole.The present invention realizes low NOx combustion discharge, design special multi-level brazier brick, the different size of spray orifice of countless different angles is designed on outer ring rifle, the branched height that annular barral of a gun designs differs and spray orifice size, angle are different, and air makes the air into burner hearth form powerful Whirl deposite tank by upper and lower bispin flow component;Fuel gas is sufficiently mixed with Whirl deposite tank again by multilayer classifying, to utilize furnace cavity to greatest extent, combustion gas is set to burn in the space as big as possible of entire combustion chamber, so that the thermic load of various pieces is uniform in burner hearth, flame mean temperature and peak temperature are reduced, to reduce the discharge of NOx.

Description

A kind of big load boiler gas burner of ultra-low NOx emission
Technical field
The invention belongs to petrochemical industry burner arts, more particularly to one kind meeting bottom burning formula, formula, blue circle are burnt in side Vortex flame, fuel are the big load boiler gas burner of ultra-low NOx emission of natural gas, catalysis drying gas, self-produced dry gas.
Background technology
It is all old-fashioned mixed oil-gas burner, flue gas to have most petrochemical industry boiler, boiler of power plant burner at present Emission severely exceeds, existing State Environmental Protection Administration's publication《Petroleum refining industry pollutant emission standard》(GB 31570- 2015)Regulation 2015-07-01 comes into effect, and to stack gas emissions, more stringent requirements are proposed, therefore researches and develops the ultralow of a new generation The big load boiler gas burner of NOx emission is extremely urgent.
Invention content
Technical problem to be solved by the present invention lies in propose that higher is wanted to stack gas emissions in for the above-mentioned prior art The problem of asking, provide a kind of automatic control, brazier brick design it is special, using upper and lower bispin flow component, shutter tune wind Mechanism, air box sealing structure component reduce the big load boiler gas burner of ultra-low NOx emission of NOx emission.
In order to solve the above technical problems, the present invention adopts the following technical scheme that:
A kind of big load boiler gas burner of ultra-low NOx emission, including control section, it is sequentially connected logical fire pot from top to bottom Brick, cylinder, shutter air adjustment actuator.
Upper and lower bispin flow component is equipped in the cylinder.The shutter air adjustment actuator is equipped with air box sealing structure group Part.The lateral surface of the cylinder is surrounded with combustion gas endless tube.The combustion gas endless tube is connected with external charging Gas Pipe.Institute The outer surface for stating brazier brick is surrounded with outer ring-like gas bag rifle.The gas connection pipe is set in cylinder.
The bottom of the gas connection pipe is connected with combustion gas endless tube.The top of the gas connection pipe passes through outer ring-like gas Packet rifle connecting tube is connected with outer ring-like gas bag rifle.The middle part of the gas connection pipe is equipped with inner ring type gas bag rifle part.It is described Inner ring type gas bag rifle part is put in the brazier brick.The control section respectively with the air box sealing structure component and blinds Window sealing structural component is connected.
The brazier brick is hollow structure, and hollow space is air flow channel.It is in eight that the entrance of air flow channel, which slopes inwardly, Font.The corresponding brazier brick side wall of outlet section of air flow channel is uniformly surrounded with 20~40 groups of burner ports.The brazier brick Outside be equipped at least one layer of step.The vertical plane of the step is inclined-plane.It is set on the corresponding side wall in middle part of the brazier brick There is outer ring-like gas bag rifle connection pore.
The outer ring-like gas bag rifle is equipped with 2~4 outer rifle spray orifices of circle in one of the embodiments, and often encloses outer rifle spray The angle of inclination in hole and size are all different.
It includes 30~60 outer rifle spray orifices often to enclose outer rifle spray orifice, and the angle of inclination of each outer rifle spray orifice and size are not Together.
The inner ring type gas bag rifle part includes inner ring type rifle connecting tube, inner ring type rifle gas in one of the embodiments, It assures, 10~20 inner ring type barrals of a gun.
The gas connection pipe is connected by inner ring type rifle connecting tube with inner ring type rifle gas bag pipe.In described 10~20 Ring-like barral of a gun uniform ring is arranged around distribution on the inner ring type rifle gas bag pipe.Every inner ring type barral of a gun all puts in the brazier brick It is interior.The height of every inner ring type barral of a gun is all inconsistent and its height surround arrangement in increasing or decreasing shape.Every inner ring type barral of a gun Top be designed with interior rifle spray orifice, each interior rifle jet nozzle angle and size are all inconsistent.
In one of the embodiments, it is described up and down bispin flow component include forward spin flow piece part, lower spinning disk part, Spinning disk fixed column, spinning disk enclose cabinet.
The forward spin flow piece part setting is enclosed in the spinning disk in cabinet.The spinning disk encloses the cylinder that cabinet is both ends open Shape.The forward spin flow piece part is connected by spinning disk fixed column with the lower spinning disk part.The forward spin flow piece part Outer surface top from low to high rotary setting of each blade around spinning disk fixed column.Each blade of the lower spinning disk part encloses Around the outer surface lower part of spinning disk fixed column rotary setting from low to high, strong Whirl deposite tank is formed later convenient for air warp.
The shutter air adjustment actuator includes panel, middle partition board, connecting plate, adjusts vane, the in one of the embodiments, One connecting rod, second connecting rod, one group of blade, one group of shaft, one group of linked block, handle portion.
The connecting plate is arranged in the bottom of the cylinder.The panel is arranged on brattice siding.The panel and company Middle partition board is equipped between fishplate bar.It is fixed by first connecting rod between the panel and middle partition board.The middle partition board and connecting plate it Between fixed by second connecting rod.The first hole is equipped among the connecting plate.The shutter air adjustment actuator passes through the first hole and institute Inner barrel is stated to be connected.The bottom of one group of shaft penetrates the middle partition board and is circumferentially positioned on the middle partition board, and The top of each shaft is connected with the connecting plate.The bottom of each shaft is welded with link member.The tune wind One group of linked block is welded on ring.Each linked block is connected by pitman pin with the link member, and a gearing Block corresponds to a shaft, realizes linkage.The blade is arranged in the shaft and a blade corresponds to a shaft, the tune Vane is equipped with handle portion.
The air box sealing structure component includes cover board, fixed plate, at least four fixations in one of the embodiments, Column, chromium plating handwheel, lead screw, two locating rods, pulling claw, big seal cover board, small seal cover board, high temperature resistant bearing.
It is fixed with cover board on the panel.The fixed plate is arranged on the middle partition board and passes through at least four fixed columns It is fixed with the cover board so that cover board forms parallel track with fixed plate.One end of the lead screw sequentially pass through the cover board, Panel, fixed plate are simultaneously connected by high temperature resistant bearing with small seal cover board.The centre of the big seal cover board is equipped with small sealing cover Plate hole.The small sealing cover plate hole matches with the small seal cover board.The outer edge of the big seal cover board and described first Hole matches.It is fixed with pulling claw on the big seal cover board.Two positioning are equipped between the small seal cover board and the pulling claw Bar so that small seal cover board keeps vertical direction when retreating.That end of the lead screw far from the small seal cover board is equipped with chromium plating Handwheel.
The big load boiler gas burner of the ultra-low NOx emission further includes lamp group kept burning day and night in one of the embodiments, Part, fire inspection component.The altar lamp component is connected with the control section, realizes automatic electronic igniting.The altar lamp component Air box sealing structure component is sequentially passed through with fire inspection component, shutter air adjustment actuator, cylinder, is put in the brazier brick.It is described Air box sealing structure component is equipped with flame-observing hole, lamp hole kept burning day and night and fire inspection component holes.
Pass through the cross-sectional area and inner ring type rifle connecting tube of the design gas connection pipe in one of the embodiments, Cross-sectional area ratio, it is 80%~85% to realize that the outer ring-like gas bag rifle accounts for fuel ratio, the inner ring type gas bag rifle part It is 15%~20% to account for fuel ratio.
The cylinder includes the low heat conductivity layer set gradually from inside to outside, noise reduction layer in one of the embodiments,.
In one of the embodiments, the handle portion include first handle, second handle, index dial, arm pivot post, Rack, gear, axle sleeve.
The axle sleeve setting is on the panel.The index dial is arranged on the axle sleeve.In the first handle Portion is equipped with arm pivot post.The arm pivot post sequentially passes through the axle sleeve, panel, reaches on the middle partition board.It is described first-hand One end of handle is connected with second handle, and the other end can be fixed by positioning pin and index dial.The rack is fixed on the tune wind On ring.The arm pivot post is equipped with gear.The gear matches with the rack on the tune vane, realizes and adjusts turning for vane It is dynamic.
Advantages of the present invention and advantageous effect:
1, it is in splayed configuration that the entrance of the air flow channel of brazier brick of the present invention, which slopes inwardly, so that air is smoothly transitioned into
In air flow channel;The outside of brazier brick is equipped at least quadruple board platform rank, and the vertical plane of step is inclined-plane, in favor of part of fuel Gas disperses combustion along step and inclined-plane stabilization;The corresponding brazier brick side wall of outlet section of air flow channel is uniformly surrounded with 20~40 groups of burner ports, the design are conducive to burner and uniformly stablize burning, and the partially combusted flame of inner ring type gas bag rifle passes through combustion Hole burning passes to brazier brick outer layer to stablize the outer rifle that ignites, and NOx is inhibited to generate.
2, the outer ring-like gas bag rifle of the present invention is equipped with 2~4 outer rifle spray orifices of circle, and often enclose the angle of inclination of outer rifle spray orifice with greatly It is small all different;It includes 30~60 outer rifle spray orifices often to enclose outer rifle spray orifice, and each angle of inclination of outer rifle spray orifice and of different sizes, It is 80%~85% that outer ring rifle, which accounts for fuel ratio, which makes brazier brick periphery form multilayer flame, to sharp to greatest extent With furnace cavity so that combustion gas can burn in the space as big as possible of entire combustion chamber so that the heat of various pieces in burner hearth Load is uniform, reduces flame mean temperature and peak value, to reduce the discharge of NOx, and effectively prevents the generation of CO, combustion It burns reliable and stable.
3, inner ring type gas bag rifle part of the present invention includes inner ring type rifle connecting tube, inner ring type rifle gas bag pipe, in 10~20 Ring-like barral of a gun, 10~20 inner ring type barral of a gun uniform rings are arranged around distribution on inner ring type rifle gas bag pipe.Every inner ring type barral of a gun It all puts in brazier brick, the height of every inner ring type barral of a gun is all inconsistent and its height surround arrangement in increasing or decreasing shape, often Interior rifle spray orifice is designed at the top of branch inner ring type barral of a gun, each interior rifle jet nozzle angle and size are all inconsistent;The design can be formed Oxygen-enriched disperses combustion, to reduce the generation of NOx.
4, the flow component of bispin up and down of present invention special designing in cylinder passes through upper and lower bispin flow group convenient for air Strong Whirl deposite tank is formed after part, combustion gas is facilitated more uniformly to be mixed with air, rotates elegant flame to form vortex.
5, the shutter air adjustment actuator of special designing of the present invention designs special shutter air adjustment actuator in cylinder body bottom, One is facilitate air around shutter air adjustment actuator even into the present invention inside, the second is easy to operation simply be easy to control System.
6, the air box sealing structure component of present invention special designing on air duct, slip can be reduced to zero, convenient for control Burner hearth oxygen content is adjusted, to reduce the generation of NOx.
7, the present invention realizes low NOx combustion discharge, designs special multi-level brazier brick, while designing inner ring type gas bag rifle Partly, outer ring-like gas bag rifle, designs the different size of spray orifice of countless different angles on outer ring rifle, and the design of annular barral of a gun is more Zhi Gaodu differs and spray orifice size, angle are different, and air passes through shutter air adjustment actuator, bellows sealing mechanism component, double up and down Spinning disk component makes the air into burner hearth form powerful Whirl deposite tank;Fuel gas by multilayer classifying again with Whirl deposite tank into Row is sufficiently mixed, and to utilize furnace cavity to greatest extent, combustion gas is enable to be fired in the space as big as possible of entire combustion chamber It burns so that the thermic load of various pieces is uniform in burner hearth, reduces flame mean temperature and peak temperature, to reduce NOx's Discharge, and carbon monoxide generation is effectively prevented, flameholding is reliable.
8, the present invention uses the altar lamp and automatic control of automatic electronic igniting, cylinder to use noise elimination structure and low-heat Conduction design, heat preservation and insulation is excellent, and the outside radiation loss of cylinder is made to minimize, thus reaches efficient, energy saving, low NOX The environmentally friendly purpose of disposal of pollutants and low noise.
Description of the drawings
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is the vertical view of the present invention.
Fig. 3 is the stereogram of inner ring type gas bag rifle part of the present invention and outer ring-like gas bag rifle connecting tube.
Fig. 4 is the front view of inner ring type gas bag rifle part of the present invention and outer ring-like gas bag rifle.
Fig. 5 is the vertical view of inner ring type gas bag rifle part of the present invention and outer ring-like gas bag rifle.
Fig. 6 is the stereogram of the present invention or more bispin flow component.
Fig. 7 is the stereogram of shutter air adjustment actuator of the present invention.
Fig. 8 is the main sectional view of shutter air adjustment actuator of the present invention.
Fig. 9 is the vertical view of shutter air adjustment actuator of the present invention.
Figure 10 is the structural schematic diagram for adjusting vane, linked block, link member in Figure 10.
Figure 11 is the structural schematic diagram of the handle portion of shutter air adjustment actuator of the present invention.
Figure 12 is the structural schematic diagram of air box sealing structure component of the present invention.
Figure 13 is the part A enlarged drawing of Figure 12.
Figure 14 is the main sectional view of brazier brick of the present invention.
Specific implementation mode
To facilitate the understanding of the present invention, the present invention is comprehensively described below with reference to relevant drawings.It is given in attached drawing The preferred embodiment of the present invention is gone out.But the present invention can be embodied in many different forms, however it is not limited to described herein Embodiment.On the contrary, purpose of providing these embodiments is make it is more thorough and comprehensive to the disclosure.
It should be noted that when element is referred to as " being arranged " in another element, it can be directly in another element Above or there may also be elements placed in the middle.When an element be considered as with another element " being connected ", it can be direct It is connected to another element, or may be simultaneously present centering elements.
Unless otherwise defined, practical all technical and scientific terms and belong to the technical field of the present invention herein The normally understood meaning of technical staff is identical.Used term is intended merely to description tool in the description of the invention herein The purpose of body embodiment, it is not intended that in the limitation present invention.
Embodiment 1
As shown in Figure 1, a kind of big load boiler gas burner of ultra-low NOx emission, including control section, altar lamp component 31, Fire inspection component 32 is sequentially connected logical brazier brick 1, cylinder 3, shutter air adjustment actuator 5 from top to bottom.
Wherein, upper and lower bispin flow component 7 is equipped in cylinder 3.Shutter air adjustment actuator 5 is equipped with air box sealing structure group Part 9.
Specifically, as shown in Fig. 1, Fig. 3, Fig. 4, Fig. 5, the lateral surface of cylinder 3 is surrounded with combustion gas endless tube 4.Combustion gas ring Pipe 4 is connected with external charging Gas Pipe 41.The outer surface of brazier brick 1 is surrounded with outer ring-like gas bag rifle 6.Combustion gas connects Pipe 43 is set in cylinder 3.The bottom of gas connection pipe 43 is connected with combustion gas endless tube 4.The top of gas connection pipe 43 passes through outer Ring-like gas bag rifle connecting tube 61 is connected with outer ring-like gas bag rifle 6.The middle part of gas connection pipe 43 is equipped with inner ring type gas bag rifle portion Divide 8.Inner ring type gas bag rifle part 8 is put in the brazier brick 1.Control section respectively with air box sealing structure component 9 and blinds Window sealing structural component 5 is connected.
Specifically, as shown in Figure 1, Figure 2 and shown in Fig. 9, altar lamp component 31 is connected with control section, realizes autoelectrinic point Fire.Altar lamp component 31 and fire inspection component 32 sequentially pass through air box sealing structure component 9, shutter air adjustment actuator 5, cylinder 3, stretch Into in brazier brick 1.Air box sealing structure component 9 is equipped with flame-observing hole 33, lamp hole kept burning day and night 34 and fire inspection component holes 35.
Wherein, as shown in Fig. 1, Figure 14, brazier brick 1 is hollow structure, and hollow space is air flow channel 11.
Specifically, it is in splayed configuration that the entrance of air flow channel 11, which slopes inwardly, so that air is smoothly transitioned into air In runner 11.Corresponding 1 side wall of brazier brick of outlet section of air flow channel 11 is uniformly surrounded with 20~40 groups of burner ports 13, should Design is conducive to burner and uniformly stablizes burning, and 8 burned flame of inner ring type gas bag rifle part passes to brazier brick 1 by burner port 13 Outer layer inhibits NOx to generate to stablize the outer ring-like gas bag rifle 6 that ignites.The outside of brazier brick 1 is equipped at least one layer of step 15, The vertical plane of step 15 is inclined-plane 17, so that part of fuel gas is stablized and disperses combustion along step 15 and inclined-plane 17.Fire pot The corresponding side wall in middle part of brick 1 is equipped with outer ring-like gas bag rifle and connects pore 19.
Wherein, outer ring-like gas bag rifle 6 is equipped with 2~4 outer rifle spray orifices of circle, and often encloses angle of inclination and the size of outer rifle spray orifice All different, it includes 30~60 outer rifle spray orifices often to enclose outer rifle spray orifice, and each angle of inclination of outer rifle spray orifice and of different sizes;It should Design is so that 1 periphery of brazier brick forms multilayer flame, to utilize furnace cavity to greatest extent so that combustion gas can entirely fire Burn and burn in the space as big as possible of room so that the thermic load of various pieces is uniform in burner hearth, reduce flame mean temperature and Peak value to reduce the discharge of NOx, and effectively prevents the generation of CO, and flameholding is reliable.
Wherein, as shown in Fig. 3, Fig. 4, Fig. 5, inner ring type gas bag rifle part includes inner ring type rifle connecting tube 81, inner ring type rifle 83,10~20 inner ring type barrals of a gun 85 of gas bag pipe.
Specifically, gas connection pipe 43 is connected by inner ring type rifle connecting tube 81 with inner ring type rifle gas bag pipe 83.10~ 20 85 uniform rings of inner ring type barral of a gun are arranged around distribution on inner ring type rifle gas bag pipe 83.Every inner ring type barral of a gun 85 all puts in fire In basin brick 1.The height of every inner ring type barral of a gun 85 is all inconsistent and its height surround arrangement, every inner ring in increasing or decreasing shape The top of type barral of a gun 85 is designed with interior rifle spray orifice, and each interior rifle jet nozzle angle and size are all inconsistent;The design can form oxygen-enriched Disperses combustion, to reduce the generation of NOx.
Specifically, the present invention is by designing the cross-sectional area and inner ring type rifle connecting tube 81 of the gas connection pipe 43 Cross-sectional area ratio, it is 80%~85% to realize that outer ring-like gas bag rifle 6 accounts for fuel ratio, and inner ring type gas bag rifle part 8 accounts for fuel ratio It is 15%~20%.
Wherein, as shown in fig. 6, bispin flow component 7 includes forward spin flow piece part 71, lower spinning disk part 73, rotation up and down Flow fixed column 75, spinning disk enclose cabinet 77.
Specifically, the setting of forward spin flow piece part 71 is enclosed in spinning disk in cabinet 77.Spinning disk encloses the circle that cabinet 77 is both ends open Cylindricality.Forward spin flow piece part 71 is connected by spinning disk fixed column 75 with lower spinning disk part 73.Forward spin flow piece part 71 it is each Outer surface top from low to high rotary setting of the blade around spinning disk fixed column 75.Each blade of lower spinning disk part 73 surrounds The outer surface lower part of spinning disk fixed column 75 rotary setting from low to high forms strong Whirl deposite tank, side later convenient for air warp Just combustion gas is more uniformly mixed with air, rotates elegant flame to form vortex.
Wherein, as shown in Fig. 7, Fig. 8, Fig. 9, Figure 10, Figure 11, shutter air adjustment actuator 5 include panel 51, middle partition board 52, Connecting plate 53, adjust vane 54, first connecting rod 55,56, one groups of second connecting rod, 57, one groups of blade shaft, 58, one groups of linked blocks 543, Handle portion 2.
Specifically, connecting plate 53 is arranged in the bottom of cylinder 3.Panel 51 is arranged on brattice siding 50.Panel 51 and company Middle partition board 52 is equipped between fishplate bar 53.It is fixed by first connecting rod 55 between panel 51 and middle partition board 52.Middle partition board 52 with connect It is fixed by second connecting rod 56 between plate 53.The first hole is equipped among connecting plate 53.Shutter air adjustment actuator 5 by the first hole with It is connected inside cylinder 3.The bottom of one group of shaft 58 penetrates middle partition board 52 and is circumferentially positioned on middle partition board 52, and each shaft 58 top is all connected with connecting plate 53.The bottom of each shaft 58 is welded with link member 541.It adjusts and is welded with one group on vane 54 Linked block 543.Each linked block 543 is connected by pitman pin 545 with link member 541, and a linked block 543 corresponds to one Root shaft 58 realizes linkage;Blade 57 is arranged in shaft 58 and a blade 57 corresponds to a shaft 58, adjusts and is set on vane 54 There is handle portion 2;
Wherein, as shown in figure 11, handle portion 2 includes first handle 21, second handle 22, index dial 23, arm pivot post 24, tooth Item 25, gear 26, axle sleeve 27.
Specifically, the setting of axle sleeve 27 is on the panel 51.Index dial 23 is arranged on axle sleeve 27.The middle part of first handle 21 is set There is arm pivot post 24.Arm pivot post 24 sequentially passes through axle sleeve 27, panel 51, reaches on middle partition board 52.One end of first handle 21 It is connected with second handle 22, the other end can be fixed by positioning pin 28 and index dial 23.Rack 25, which is fixed on, to be adjusted on vane 54.Hand Handle shaft 24 is equipped with gear 26.Gear 26 matches with the rack 25 on vane 54 is adjusted, and realizes the rotation for adjusting vane 54.
Wherein, as shown in Figure 12 and Figure 13, air box sealing structure component 9 is consolidated including cover board 91, fixed plate 92, at least four Fixed column 93, chromium plating handwheel 94, lead screw 95, two locating rods 96, pulling claw 97, big seal cover board 98, small seal cover board 99, high temperature resistants Bearing 90.
Specifically, being fixed with cover board 91 on panel 51.Fixed plate 92 is arranged on middle partition board 52 and passes through four fixed columns 93 fix with cover board 91 so that cover board 91 forms parallel track with fixed plate 92(Ensure that vertical direction moves lead screw always It is dynamic).One end of lead screw 95 sequentially passes through cover board 91, panel 51, fixed plate 92 and by high temperature resistant bearing 90 and small seal cover board 99 are connected.The centre of big seal cover board 98 is equipped with small sealing cover plate hole.Small sealing cover plate hole matches with small seal cover board 99.Greatly The outer edge of seal cover board 98 matches with the first hole.It is fixed with pulling claw 97 on big seal cover board 98.Small seal cover board 99 and drawing Two locating rods 96 are equipped between pawl 97 so that small seal cover board 99 keeps vertical direction when retreating.Lead screw 95 is far from small sealing That end of cover board 99 is equipped with chromium plating handwheel 94.
The course of work and its operation principle of the present invention:
Present invention employs fuel staging, strengthen mixing, non-equivalent sectional combustion, bias combustion, from fluidics, burner hearth flue gas Recirculating technique reduces combustion flame central temperature, controls NOXThe combustion technology of generation.The present invention is adjusted than big, operating flexibility Width, to by fuel gas classification, sectional combustion, realize the fully complete combustion method of fuel combustion;The present invention is as far as possible Ground efficiently uses the flame in industrial boiler furnace, by special brazier brick 1, is formed and stablizes the cylindric flame of annular, reduced Flame mean temperature and peak temperature, and it is allowed to be formed cycle in flue gas, reach and inhibits NOx emission optimum efficiency;To realize Ultra-low NOx emission.
Shutter air adjustment actuator 5 of the present invention, takes away positioning pin 28, by 22 driving handle shaft 24 of second handle, arm pivot post 24 On gear 26 driving adjust vane 54 on rack 25, due to rack 25 be integrally fixed at adjust vane 54 on, adjust vane 54 with It the rotation of rack 25 and rotates.Linked block 543 is welded with vane 54 is adjusted, and link member 541 is welded with shaft 58, passes through link pin Axis 545 connects, and realizes the adjusting of the linked switch and air quantity of the present invention of shutter.
The present invention fixes cover board 91 on the panel 51, then fixes fixed plate 92 with four 93 both ends of fixed column, makes Cover board 91 forms parallel track with fixed plate 92, when chromium plating handwheel 94 drives lead screw 95 to run, big seal cover board 98 and small Seal cover board 99 can be run along parallel orbit, ensure that sealing plate running precision.When present invention state before igniting, greatly Seal cover board 98 and small seal cover board 99 are in sealing state, prevent air from leaking in burner hearth.When the present invention needs to light a fire When, it needs to open big seal cover board 98 and small seal cover board 99, admits air into combustion-supporting, but since wind pressure is very big, plating When chromium handwheel 94 drives lead screw 95, small seal cover board 99 is opened first, certain distance is pulled to then along locating rod 96 and lets out After pressure, 99 back of small seal cover board, which can be withstood, grasps 97, and big seal cover board 98 is opened.This structure solves wind pressure mistake well The problem that can not be switched greatly.
The air of the present invention enters shutter tune wind turbine from the outside of shutter air adjustment actuator 5 by the gap between blade Inside structure 5, big seal cover board 98 and small seal cover board 99 are opened, air enters from 5 inside of shutter air adjustment actuator in cylinder 3, Whirl deposite tank is formed by upper and lower bispin flow component 7 inside cylinder 3, is entered back into brazier brick 1.
It is of the invention full-automatic, it is controlled by control section.
Advantages of the present invention and advantageous effect:
1, it is in splayed configuration that the entrance of the air flow channel 11 of brazier brick 1 of the present invention, which slopes inwardly, in favor of the stable transition of air Into air flow channel 11;The outside of brazier brick 1 is equipped at least quadruple board platform rank 15, and the vertical plane of step 15 is inclined-plane 17, in favor of Part of fuel gas is stablized and disperses combustion along step 15 and inclined-plane 17;Corresponding 1 side of brazier brick of outlet section of air flow channel 11 Wall is uniformly surrounded with 20~40 groups of burner ports 13, which is conducive to burner and uniformly stablizes burning, inner ring type gas bag rifle portion Divide 8 burned flames to pass to 1 outer layer of brazier brick by burner port 13 to stablize the outer rifle that ignites, and NOx is inhibited to generate.
2, the outer ring-like gas bag rifle 6 of the present invention is equipped with 2~4 outer rifle spray orifices of circle, and often enclose the angle of inclination of outer rifle spray orifice with Size is all different;It includes 30~60 outer rifle spray orifices often to enclose outer rifle spray orifice, and the angle of inclination of each outer rifle spray orifice and size are not Together, it is 80%~85% that outer ring rifle, which accounts for fuel ratio, which makes the periphery of brazier brick 1 form multilayer flame, to greatest extent Utilize furnace cavity so that combustion gas can burn in the space as big as possible of entire combustion chamber so that various pieces in burner hearth Thermic load it is uniform, reduce flame mean temperature and peak value, to reduce the discharge of NOx, and effectively prevent the production of CO Raw, flameholding is reliable.
3, inner ring type gas bag rifle part 8 of the present invention includes inner ring type rifle connecting tube 81, inner ring type rifle gas bag pipe 83,10~20 85,10~20 85 uniform rings of inner ring type barral of a gun of branch inner ring type barral of a gun are arranged around distribution on inner ring type rifle gas bag pipe 83.Every Inner ring type barral of a gun 85 is all put in brazier brick 1, and the height of every inner ring type barral of a gun 85 is all inconsistent and its height is in be incremented by or pass Subtract shape around arrangement, the top of every inner ring type barral of a gun 85 is designed with interior rifle spray orifice, and each interior rifle jet nozzle angle and size all differ It causes;The design can form oxygen-enriched disperses combustion, to reduce the generation of NOx.
4, the flow of the bispin up and down component 7 of present invention special designing in cylinder 3 passes through upper and lower bispin flow convenient for air Strong Whirl deposite tank is formed after component 7, combustion gas is facilitated more uniformly to be mixed with air, rotates elegant flame to form vortex.
5, the shutter air adjustment actuator 5 of special designing of the present invention designs special shutter air adjustment actuator in 3 bottom of cylinder 5, one is facilitate air around shutter air adjustment actuator 5 even into the present invention inside, the second is it is easy to operation it is simple easily In control.
6, the air box sealing structure component 9 of present invention special designing on air duct, slip can be reduced to zero, convenient for control Burner hearth oxygen content is adjusted, to reduce the generation of NOx.
7, the present invention realizes low NOx combustion discharge, designs special multi-level brazier brick 1, while designing inner ring type gas bag Rifle part 8, outer ring-like gas bag rifle 6, design the different size of spray orifice of countless different angles, annular on ring-like gas bag rifle 6 outside The branched height that barral of a gun 85 designs differs and spray orifice size, angle are different, and air passes through shutter air adjustment actuator 5, bellows sealer Structure component 9, upper and lower bispin flow component 7 make the air into burner hearth form powerful Whirl deposite tank;Fuel gas is by multi-level point Grade is sufficiently mixed with Whirl deposite tank again, to utilize furnace cavity to greatest extent, combustion gas is enable to the greatest extent may be used in entire combustion chamber It burning in space that can be big so that the thermic load of various pieces is uniform in burner hearth, reduces flame mean temperature and peak temperature, To reduce the discharge of NOx, and carbon monoxide generation is effectively prevented, flameholding is reliable.
8, the present invention uses the altar lamp and automatic control of automatic electronic igniting, and cylinder 3 is using noise elimination structure and low Heat transfer designs, and heat preservation and insulation is excellent, and 3 outside radiation loss of cylinder is made to minimize, thus reaches efficient, energy saving, low NOXThe environmentally friendly purpose of disposal of pollutants and low noise.
One embodiment of the present invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously Cannot the limitation to the scope of the claims of the present invention therefore be interpreted as.It should be pointed out that for those of ordinary skill in the art For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention Protect range.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.

Claims (10)

1. a kind of big load boiler gas burner of ultra-low NOx emission, which is characterized in that including control section, from top to bottom according to The secondary brazier brick being connected, cylinder, shutter air adjustment actuator, the cylinder is interior to be equipped with upper and lower bispin flow component, the blinds Window air adjustment actuator is equipped with air box sealing structure component, and the lateral surface of the cylinder is surrounded with combustion gas endless tube, the combustion gas Endless tube is connected with external charging Gas Pipe, and the outer surface of the brazier brick is surrounded with outer ring-like gas bag rifle, the combustion Gas connecting tube is set in cylinder, and the bottom of the gas connection pipe is connected with combustion gas endless tube, the top of the gas connection pipe It is connected with outer ring-like gas bag rifle by outer ring-like gas bag rifle connecting tube, the middle part of the gas connection pipe is equipped with inner ring type gas bag Rifle part, the inner ring type gas bag rifle part are put in the brazier brick, and the control section seals with the bellows tie respectively Structure component is connected with shutter sealing structural component;
The brazier brick is hollow structure, and hollow space is air flow channel, and it is in splayed configuration that the entrance of air flow channel, which slopes inwardly, The corresponding brazier brick side wall of outlet section of air flow channel is uniformly surrounded with 20~40 groups of burner ports, the outside of the brazier brick Equipped at least one layer of step, the vertical plane of the step is inclined-plane, and the corresponding side wall in middle part of the brazier brick is equipped with outer shroud Type gas bag rifle connects pore.
2. the big load boiler gas burner of ultra-low NOx emission according to claim 1, which is characterized in that the outer shroud Type gas bag rifle is equipped with 2~4 outer rifle spray orifices of circle, and often the angle of inclination of the outer rifle spray orifice of circle and size are all different;
It includes 30~60 outer rifle spray orifices often to enclose outer rifle spray orifice, and each angle of inclination of the outer rifle spray orifice and of different sizes.
3. the big load boiler gas burner of ultra-low NOx emission according to claim 1, which is characterized in that the inner ring Type gas bag rifle part includes inner ring type rifle connecting tube, inner ring type rifle gas bag pipe, 10~20 inner ring type barrals of a gun;
The gas connection pipe is connected by inner ring type rifle connecting tube with inner ring type rifle gas bag pipe, 10~20 inner ring types Barral of a gun uniform ring is arranged around distribution on the inner ring type rifle gas bag pipe, and every inner ring type barral of a gun is all put in the brazier brick, The height of every inner ring type barral of a gun is all inconsistent and its height surround arrangement, the top of every inner ring type barral of a gun in increasing or decreasing shape Portion is designed with interior rifle spray orifice, and each interior rifle jet nozzle angle and size are all inconsistent.
4. the big load boiler gas burner of ultra-low NOx emission according to claim 1, which is characterized in that above and below described Bispin flow component includes that forward spin flow piece part, lower spinning disk part, spinning disk fixed column, spinning disk enclose cabinet;
The forward spin flow piece part setting is enclosed in the spinning disk in cabinet, and the spinning disk encloses the cylinder that cabinet is both ends open, The forward spin flow piece part is connected by spinning disk fixed column with the lower spinning disk part, each leaf of the forward spin flow piece part Around the outer surface top of spinning disk fixed column, rotary setting, each blade of the lower spinning disk part surround rotation to piece from low to high The outer surface lower part of flow fixed column rotary setting from low to high forms strong Whirl deposite tank later convenient for air warp.
5. the big load boiler gas burner of ultra-low NOx emission according to claim 1, which is characterized in that the blinds Window air adjustment actuator include panel, middle partition board, connecting plate, adjust vane, first connecting rod, second connecting rod, one group of blade, one group of shaft, One group of linked block, handle portion;
The connecting plate is arranged in the bottom of the cylinder, and the panel is arranged on brattice siding, the panel and connecting plate Between be equipped with middle partition board, fixed by first connecting rod between the panel and middle partition board, between the middle partition board and connecting plate lead to It crosses second connecting rod to fix, the first hole is equipped among the connecting plate, the shutter air adjustment actuator passes through the first hole and the cylinder Internal portion is connected, and the bottom of one group of shaft penetrates the middle partition board and is circumferentially positioned on the middle partition board, and each The top of the shaft is all connected with the connecting plate, and the bottom of each shaft is welded with link member, on the tune vane It is welded with one group of linked block, each linked block is connected by pitman pin with the link member, and a linked block pair Ying Yigen shafts realize linkage, and the blade is arranged in the shaft and a blade corresponds to a shaft, the tune vane It is equipped with handle portion.
6. the big load boiler gas burner of ultra-low NOx emission according to claim 5, which is characterized in that the bellows Sealing structural component includes cover board, fixed plate, at least four fixed columns, chromium plating handwheel, lead screw, two locating rods, pulling claw, big close Cover plate, small seal cover board, high temperature resistant bearing;
Cover board is fixed on the panel, the fixed plate is arranged on the middle partition board and passes through at least four fixed columns and institute It states cover board to fix so that cover board forms parallel track with fixed plate, and one end of the lead screw sequentially passes through the cover board, face Plate, fixed plate are simultaneously connected by high temperature resistant bearing with small seal cover board, and the centre of the big seal cover board is equipped with small seal cover board Hole, the small sealing cover plate hole match with the small seal cover board, the outer edge of the big seal cover board and first hole Match, pulling claw be fixed on the big seal cover board, two locating rods are equipped between the small seal cover board and the pulling claw, So that small seal cover board keeps vertical direction, that end of the lead screw far from the small seal cover board to be equipped with chromium plating hand when retreating Wheel.
7. the big load boiler gas burner of ultra-low NOx emission according to claim 1, which is characterized in that described ultralow The big load boiler gas burner of NOx emission further includes altar lamp component, fire inspection component, the altar lamp component and the control Part is connected, and realizes that automatic electronic igniting, the altar lamp component and fire inspection component sequentially pass through air box sealing structure component, hundred Leaf window air adjustment actuator, is put in the brazier brick cylinder, and the air box sealing structure component is equipped with flame-observing hole, lamp hole kept burning day and night Component holes are examined with fire.
8. the big load boiler gas burner of ultra-low NOx emission according to claim 3, which is characterized in that pass through design The cross-sectional area ratio of the cross-sectional area and inner ring type rifle connecting tube of the gas connection pipe realizes the outer ring-like gas bag It is 80%~85% that rifle, which accounts for fuel ratio, and it is 15%~20% that the inner ring type gas bag rifle part, which accounts for fuel ratio,.
9. the big load boiler gas burner of ultra-low NOx emission according to claim 1, which is characterized in that the cylinder Including set gradually from inside to outside low heat conductivity layer, noise reduction layer.
10. the big load boiler gas burner of ultra-low NOx emission according to claim 5, which is characterized in that the handle Part includes first handle, second handle, index dial, arm pivot post, rack, gear, axle sleeve;
On the panel, the index dial is arranged on the axle sleeve, is set in the middle part of the first handle for the axle sleeve setting There are arm pivot post, the arm pivot post to sequentially pass through the axle sleeve, panel, reach on the middle partition board, the first handle One end is connected with second handle, and the other end can be fixed by positioning pin and index dial, and the rack is fixed on the tune vane, The arm pivot post is equipped with gear, and the gear matches with the rack on the tune vane, realizes the rotation for adjusting vane.
CN201810810457.7A 2018-07-23 2018-07-23 A kind of big load boiler gas burner of ultra-low NOx emission Pending CN108679608A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109737408A (en) * 2019-03-10 2019-05-10 岳阳钟鼎热工电磁科技有限公司 The big load pyrolysis furnace gas burner of flat fan flame ultra-low NOx emission
CN110332535A (en) * 2019-08-13 2019-10-15 岳阳钟鼎热工电磁科技有限公司 The cooling low NO of super large load waterxGas burner
CN110848683A (en) * 2019-11-28 2020-02-28 岳阳远东节能设备有限公司 Ultralow NOx and CO emission combustor with high-low pressure and high-low heat value dual fuel gas
CN110848681A (en) * 2019-11-04 2020-02-28 岳阳远东节能设备有限公司 Large-load ultralow-nitrogen combustor suitable for low-heat-value and low-pressure fuel gas
CN115789638A (en) * 2022-11-29 2023-03-14 岳阳钟鼎热工电磁科技有限公司 Full premix type flameless combustion system for pure oxygen combustion

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2600676Y (en) * 2003-01-10 2004-01-21 泰州市沪江特种设备有限公司 Regulating indicating mechanism of blast valve
CN200992569Y (en) * 2006-12-29 2007-12-19 中国铝业股份有限公司 Reduction jar sealing device
CN101832559A (en) * 2009-02-27 2010-09-15 阿尔斯托姆科技有限公司 Be used for the swirl block register design of wall fired burners
DE102014105166B3 (en) * 2014-03-12 2015-08-06 Max Weishaupt Gmbh Swirl generator for a burner and provided therewith mixing device and provided burner
CN105972596A (en) * 2016-07-06 2016-09-28 王鸿川 Low-nitrogen burner
CN107191932A (en) * 2017-07-07 2017-09-22 江阴创捷电气设备有限公司 Low NO
CN107355781A (en) * 2017-08-30 2017-11-17 山西煜能科技开发有限公司 A kind of methanol burner flame vortex device
CN107726323A (en) * 2017-11-28 2018-02-23 岳阳钟鼎热工电磁科技有限公司 Ultra-low NOx emission circular flame oil and gas combination burner
CN108050515A (en) * 2018-01-15 2018-05-18 岳阳钟鼎热工电磁科技有限公司 A kind of flat ultralow NO of attached wall flamexGas burner
CN208606171U (en) * 2018-07-23 2019-03-15 岳阳钟鼎热工电磁科技有限公司 A kind of big load boiler gas burner of ultra-low NOx emission

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2600676Y (en) * 2003-01-10 2004-01-21 泰州市沪江特种设备有限公司 Regulating indicating mechanism of blast valve
CN200992569Y (en) * 2006-12-29 2007-12-19 中国铝业股份有限公司 Reduction jar sealing device
CN101832559A (en) * 2009-02-27 2010-09-15 阿尔斯托姆科技有限公司 Be used for the swirl block register design of wall fired burners
DE102014105166B3 (en) * 2014-03-12 2015-08-06 Max Weishaupt Gmbh Swirl generator for a burner and provided therewith mixing device and provided burner
CN105972596A (en) * 2016-07-06 2016-09-28 王鸿川 Low-nitrogen burner
CN107191932A (en) * 2017-07-07 2017-09-22 江阴创捷电气设备有限公司 Low NO
CN107355781A (en) * 2017-08-30 2017-11-17 山西煜能科技开发有限公司 A kind of methanol burner flame vortex device
CN107726323A (en) * 2017-11-28 2018-02-23 岳阳钟鼎热工电磁科技有限公司 Ultra-low NOx emission circular flame oil and gas combination burner
CN108050515A (en) * 2018-01-15 2018-05-18 岳阳钟鼎热工电磁科技有限公司 A kind of flat ultralow NO of attached wall flamexGas burner
CN208606171U (en) * 2018-07-23 2019-03-15 岳阳钟鼎热工电磁科技有限公司 A kind of big load boiler gas burner of ultra-low NOx emission

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109737408A (en) * 2019-03-10 2019-05-10 岳阳钟鼎热工电磁科技有限公司 The big load pyrolysis furnace gas burner of flat fan flame ultra-low NOx emission
CN109737408B (en) * 2019-03-10 2023-11-24 岳阳钟鼎热工电磁科技有限公司 Gas burner for flat fan-shaped flame ultralow NOx emission high-load cracking furnace
CN110332535A (en) * 2019-08-13 2019-10-15 岳阳钟鼎热工电磁科技有限公司 The cooling low NO of super large load waterxGas burner
CN110332535B (en) * 2019-08-13 2024-05-03 岳阳钟鼎热工电磁科技有限公司 Super-load water cooling low NOxGas burner
CN110848681A (en) * 2019-11-04 2020-02-28 岳阳远东节能设备有限公司 Large-load ultralow-nitrogen combustor suitable for low-heat-value and low-pressure fuel gas
CN110848683A (en) * 2019-11-28 2020-02-28 岳阳远东节能设备有限公司 Ultralow NOx and CO emission combustor with high-low pressure and high-low heat value dual fuel gas
CN115789638A (en) * 2022-11-29 2023-03-14 岳阳钟鼎热工电磁科技有限公司 Full premix type flameless combustion system for pure oxygen combustion
CN115789638B (en) * 2022-11-29 2024-02-13 湖南钟鼎热工科技股份有限公司 Full-premix pure oxygen combustion flameless combustion system

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