CN111594833A - Annular surface cold flame ultralow nitrogen combustor - Google Patents

Annular surface cold flame ultralow nitrogen combustor Download PDF

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Publication number
CN111594833A
CN111594833A CN202010448050.1A CN202010448050A CN111594833A CN 111594833 A CN111594833 A CN 111594833A CN 202010448050 A CN202010448050 A CN 202010448050A CN 111594833 A CN111594833 A CN 111594833A
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Prior art keywords
water
pipe
water pipe
tank
water outlet
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Pending
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CN202010448050.1A
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Chinese (zh)
Inventor
周国平
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Europa China Environmental Engineering Co ltd
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Europa China Environmental Engineering Co ltd
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Priority to CN202010448050.1A priority Critical patent/CN111594833A/en
Publication of CN111594833A publication Critical patent/CN111594833A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/48—Nozzles
    • F23D14/58—Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration
    • F23D14/583—Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration of elongated shape, e.g. slits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/62—Mixing devices; Mixing tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
    • F23D14/78—Cooling burner parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
    • F23D14/82—Preventing flashback or blowback

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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 technology discloses an annular surface cold flame ultralow-nitrogen combustor, which comprises a mixed gas cylinder body for inputting air and fuel gas, a water outlet pipe, a water inlet tank, a water outlet tank, an outer water pipe and an inner water pipe, wherein the mixer is connected with the mixed gas cylinder body; the both ends of outer water pipe and interior water pipe respectively with the perforated plate intercommunication of intaking and play water perforated plate, a plurality of perforated plates have been cup jointed to interior water pipe outside. The technology can effectively reduce the discharge amount of NOx, can replace and reform the original traditional combustor and the premixed combustor, changes the diameter and the length of the combustion surface of the combustor according to the power size and the space size of a combustion chamber of a boiler, can be well matched with the boiler, and realizes stable and uniform complete combustion of flame of the combustion surface.

Description

Annular surface cold flame ultralow nitrogen combustor
Technical Field
The technology relates to a burner, in particular to an annular surface cold flame ultralow nitrogen burner.
Background
At present, with the continuous improvement of environmental protection requirements, the emission requirements of NOx are stricter and stricter, the low-nitrogen modification of the original gas burners is basically completed, but the burners mainly adopt air classification for supplyThe feed and fuel staged combustion and the auxiliary flue gas external circulation are carried out, and the emission of NOx is mostly controlled at 50mg/Nm3In the above, the external flue gas external circulation fan is needed, so that the use power is increased, and meanwhile, in order to reduce the emission of NOx, the flue gas circulation amount needs to be increased, so that the output of a boiler and the combustion stability are influenced. In the low-nitrogen modification, a surface metal fiber mesh premixing burner is also adopted, but the normal use of the burner is influenced due to the risk that the surface of the metal fiber mesh is easy to block and possibly burnt out. Plate-type water-cooled burners are also used in domestic gas water heaters, but are limited to small wall-mounted furnaces. The existing strip seam combustor in the industrial field utilizes water-cooling pipes to cool flame, reduces the emission of NOx, but along with the increase of boiler power, the volume increase of the combustor is more, can not be well matched with a boiler, can not be used for low-nitrogen transformation of an old boiler, and is mainly applied to a brand-new integrated boiler.
Disclosure of Invention
This technique is in order to solve above problem, be convenient for simultaneously better to original gas boiler's low nitrogen transformation, an annular face cold flame ultralow nitrogen combustor has been proposed, this annular face cold flame ultralow nitrogen combustor can effectively reduce NOx's emission, can replace and reform transform original traditional combustor and premix combustor, when selecting this annular face cold flame ultralow nitrogen combustor, according to the power size and the combustion chamber spatial dimension of boiler, change the diameter and the length of annular face cold flame ultralow nitrogen combustor combustion face, just can well match with the boiler well, the stable even complete combustion of flame of combustion face has been realized, combustion stability is good.
In order to achieve the technical purpose, the technical scheme adopted by the technology is as follows:
the annular surface cold flame ultralow-nitrogen combustor comprises a mixed gas cylinder body for inputting air and fuel gas, a water outlet pipe, a water inlet tank, a water outlet tank, an outer water pipe and an inner water pipe, wherein the mixed gas cylinder body penetrates through the middle part of the water outlet tank and is connected with a water outlet porous plate on one side of the water outlet tank;
outer water pipe and interior water pipe's both ends respectively with the inlet water perforated plate of case one side of intaking and the play water perforated plate of case one side of going out through-connection mutually, outer water pipe and interior water pipe have a plurality ofly to arrange according to the annular, interior water pipe is located the inboard of outer water pipe, the outside suit of interior water pipe is connected with a plurality of perforated plates, and the clearance between two adjacent perforated plates of interior water pipe axis direction axial forms the circumferential weld, and the clearance between two adjacent interior water pipes of circumference has formed slit one, and the clearance between two adjacent outer water pipes of circumference has formed slit two, and slit one communicates with each other with slit two.
As a further improved technical scheme of the technology, the outer water pipes and the inner water pipes are arranged in a staggered mode in the circumferential direction, the outer water pipes are located on a perpendicular bisector between every two adjacent inner water pipes in the circumferential direction, the axis of each outer water pipe is opposite to the corresponding slit in the radial direction, the axis of each inner water pipe is opposite to the corresponding slit in the radial direction, and the first slit is communicated with the second slit in a bent mode.
As a further improved technical scheme of the technology, the outer water pipes and the inner water pipes are uniformly arranged in the circumferential direction according to the circumferential or fan-shaped arrangement, namely the distance between two circumferentially adjacent outer water pipes is equal, and the distance between two circumferentially adjacent inner water pipes is equal.
As the further improved technical scheme of this technique, the outside suit welding of interior water pipe has a plurality of perforated plates, has the arc gasket between two adjacent perforated plates, and the arc gasket is located the outside of interior water pipe.
As a further improved technical scheme of the technology, two ends of the outer water pipe and the inner water pipe are respectively communicated and welded with a water inlet porous plate of the water inlet tank and a water outlet porous plate of the water outlet tank; the water inlet pipe is communicated and welded with the middle part of the water inlet porous plate on one side of the water inlet tank.
As a further improved technical scheme of the technology, a connecting flange is welded on one side of the water outlet tank, the water outlet pipe penetrates through the connecting flange and is communicated with the water outlet tank, the mixed gas cylinder body penetrates through the connecting flange and the middle part of the water outlet tank and is welded with an inner hole of the water outlet porous plate, and the connecting flange is welded with the mixed gas cylinder body in the circumferential direction.
As a further improved technical scheme of the technology, the ignition and fire detection assembly and the fire observation mirror are circumferentially arranged on the connecting flange.
As the further improved technical scheme of the technology, the device also comprises a fan and a mixer; the fan is connected with the mixer, a fuel gas inlet is arranged on the mixer, and the mixer is connected with the mixed gas cylinder. Preferably, the mixer is connected with the mixed gas cylinder body through a flange; a fuel gas inlet is welded on the outer cylinder of the mixer; the fan is connected with the mixer through fan flexible coupling.
As a further improved technical scheme of the technology, the perforated plate is circular, the outer circular surface of the perforated plate is in a curve shape, the outer water pipe is connected with a concave part on the curve-shaped outer circular surface of the perforated plate, and a plurality of pipe holes for inserting the inner water pipe are distributed on the surface of the perforated plate along the circumferential direction of the perforated plate.
As a further improved technical scheme of the technology, the water outlet tank is an annular water tank;
the water outlet porous plate is annular, a plurality of outer pipe holes communicated with the outer water pipe are distributed on the surface of the water outlet porous plate, and a plurality of inner pipe holes communicated with the inner water pipe are distributed on the surface of the water outlet porous plate;
the perforated plate of intaking is circular, and the surperficial middle tube hole that is used for the intercommunication inlet tube that is equipped with of perforated plate of intaking, and the surface distribution of perforated plate of intaking has a plurality of outer tube holes that are used for the intercommunication outer water pipe, and the surface distribution of perforated plate of intaking has a plurality of inner tube holes that are used for the intercommunication inner tube pipe.
As a further improved technical scheme of the technology, the water inlet pipe is connected with a low water level water tank of the boiler, and the water outlet pipe is connected with a high water level water tank of the boiler.
The beneficial effect of this technique does: after air and fuel gas are uniformly mixed in the mixer, the mixture is sprayed out from the slits formed by the inner water pipe, the outer water pipe and the porous plate to be ignited, so that not only can the flame be prevented from being tempered, but also the temperature of the flame can be reduced, and the emission of NOx is reduced to be less than 30mg/Nm3. The higher air injection speed can cause the phenomenon of fire escape, and the outer water pipe is arranged at the center of the adjacent gap between the outer water pipe and the inner water pipe to prevent the mixtureThe gas mixing speed is high, the combustion is effectively and stably, meanwhile, the circulating water in the outer water pipe can take away heat, and the flame temperature is reduced; when the mixed gas enters the inner cavity through the mixed gas cylinder, the mixed gas can be uniformly distributed at each slit of a combustion surface formed by the inner water pipe, the outer water pipe and the perforated plate due to the resistance action of the slit I and the slit II, so that the flame of the combustion surface is stably, uniformly and completely combusted, the flame is effectively expanded on the combustion surface, the flame is controlled to be intensively combusted, and the combustion flame is reduced. Can replace and reform transform original traditional combustor and premix the combustor, when selecting this toroidal surface combustor, according to the power size and the combustion chamber space size of boiler, change the diameter and the length of toroidal surface combustor combustion face, just can well match with the boiler, simultaneously because water in this toroidal surface combustor water pipe, the outer water pipe is direct to link up with the interior water phase of boiler, has improved the thermal efficiency of boiler greatly, has practiced thrift the energy.
Drawings
Fig. 1 is a schematic overall structure diagram of the present embodiment.
FIG. 2 is a schematic sectional view of the water inlet/outlet pipeline of this embodiment
FIG. 3 is a schematic cross-sectional view of the combustion surface of the present embodiment.
Fig. 4 is a partially enlarged view of a in fig. 3.
FIG. 5 is a schematic view of the combustion surface of FIG. 1 shown in the orientation B (with the outer water tube removed).
FIG. 6 is a schematic diagram of the structure of the multi-well plate according to the present embodiment.
Fig. 7 is a schematic diagram of the structure of the water outlet porous plate of the present embodiment.
Fig. 8 is a schematic structural view of the water inlet porous plate of the present embodiment.
Detailed Description
Embodiments of the invention are further illustrated below with reference to figures 1-8:
the embodiment provides an ultralow nitrogen combustor of ring face cold flame, through natural gas and air homogeneous mixing, can realize the natural gas fully combustion, when the slit that simultaneously burning flame formed from interior water pipe 17, outer water pipe 16 and perforated plate 19 is erupted and is lighted, when can preventing the tempering, the flame temperature can effective control reduce, has reversed the production of NOx greatly. As shown in fig. 1 and 2, the ring-shaped surface cold flame ultra-low nitrogen burner of the present embodiment has a plurality of inner water tubes 17 and outer water tubes 16, and are arranged in a circumferential arrangement (or arranged in a sector according to the local heating requirement), the outer water tubes 16 are in one-to-one correspondence with the centers of adjacent gaps of the inner water tubes 17, as shown in fig. 3, 4 and 5, a plurality of perforated plates 19 are sleeved and welded outside the inner water tubes 17, arc-shaped gaskets 18 are arranged between the perforated plates 19 and outside the inner water tubes 17 (the arc-shaped gaskets 18 are used to prevent the arc-shaped gaskets 18 from extending into the first slits 21 to cause the first slits 21 to be too small), annular gaps 20 are formed between two adjacent perforated plates 19, the arc-shaped gaskets 18 are positioned between two adjacent perforated plates 19 to prevent the two perforated plates 19 from contacting, the plurality of perforated plates 19 are axially divided into a plurality of annular gaps 20 along the inner water tubes 17, the gaps between two adjacent inner water tubes 17 form the first, the outer water pipes 16 and the inner water pipes 17 are arranged in a staggered mode in the circumferential direction, the outer water pipes 16 are located on a perpendicular bisector between every two adjacent inner water pipes 17 in the circumferential direction, the axis of each outer water pipe 16 is opposite to the corresponding slit I21 in the radial direction, the axis of each inner water pipe 17 is opposite to the corresponding slit II 22 in the radial direction, and the slits I21 are communicated with the slits II 22 in a bent mode. Two ends of the outer water pipe 16 and the inner water pipe 17 are respectively communicated and welded with the water inlet porous plate 11 of the water inlet tank 12 and the water outlet porous plate 9 of the water outlet tank 8; the water inlet pipe 14 penetrates through the outer circle surface of the mixed gas cylinder 4 and is communicated and welded with the water inlet porous plate 11 of the water inlet tank 12 through the center of the combustion surface 10; the water outlet pipe 5 is communicated with the water inlet tank 8 through the connecting flange 6, the connecting flange 6 is welded with the water outlet tank 8, the mixed gas cylinder 4 penetrates through the connecting flange 6 to be butted and welded with the water inlet porous plate 9, the connecting flange 6 is circumferentially welded with the mixed gas cylinder 4, and the connecting flange 6 is circumferentially provided with an ignition and fire detection assembly and a fire observation mirror 13; the mixed gas barrel 4 is connected with the mixer 3 through a flange, a natural gas inlet 15 is welded on the barrel outside the mixer 3, the mixer 3 is connected with the fan flexible connection 2, and the fan flexible connection 2 is connected with the fan 1.
As shown in fig. 6, the perforated plate 19 is circular, the outer circumferential surface of the perforated plate 19 is curved, and a plurality of pipe holes for inserting the inner water pipes 17 are distributed on the surface of the perforated plate 19 along the circumferential direction. The water outlet tank 8 is a circular water tank. As shown in fig. 7, the water outlet porous plate 9 is circular, a plurality of outer pipe holes for communicating with the outer water pipe 16 are distributed on the surface of the water outlet porous plate 9, and a plurality of inner pipe holes for communicating with the inner water pipe 17 are distributed on the surface of the water outlet porous plate 9. As shown in fig. 8, the water inlet porous plate 11 is circular, a middle pipe hole for communicating with the water inlet pipe 14 is arranged in the middle of the surface of the water inlet porous plate 11, a plurality of outer pipe holes for communicating with the outer water pipe 16 are distributed on the surface of the water inlet porous plate 11, and a plurality of inner pipe holes for communicating with the inner water pipe 17 are distributed on the surface of the water inlet porous plate 11.
The outer water pipe 16, the inner water pipe 17 and the perforated plate 19 constitute the combustion surface 10. The surface diameter D2 and the length L of the combustion surface 10 of the annular surface cold flame burner of the embodiment can be matched and determined according to the boiler power and the size of the combustion chamber, the outer diameter of the mixed gas cylinder 4 is smaller than the inner diameter D1 formed by combining a plurality of perforated plates 19, the diameter D1=16mm-45mm of the inner water pipe 17, the diameter D2=16mm-45mm of the outer water pipe 16, the diameter of the inner water pipe 17 and the diameter of the outer water pipe 16 are combined according to the related requirements of a slit I21, the gap e =4mm-9mm, w =3mm-7mm, c =3mm-6mm is met, and e is more than or equal to w is more than or equal to c; the effective height H =20mm-30mm of the perforated plate 19, the thickness b1=1mm-2mm, and the thickness of the spacer 18 should satisfy the gap b2=0.8mm-1.5mm of the first slit 21; the diameter and the number of the water outlet pipes 5 can be configured according to requirements.
The technical scheme of the invention comprises the following working processes:
air enters the mixer 3 through the fan 1 and the fan flexible connection 2, meanwhile, natural gas enters the mixer 3 from a natural gas inlet 15 outside the mixer 3, the two gases are fully and uniformly mixed in the mixer 3 and then enter the slits I21 and II 22 of the combustion surface 10 through the mixed gas cylinder 4 to be sprayed out, and ignition and detection are carried out through the ignition and fire detection assembly 7; the inlet tube 14 links to each other with boiler low water level water tank, and outlet pipe 5 links to each other with boiler high water level water tank, and flame temperature effectively cools off through interior water pipe 17, outer water pipe 16 and the perforated plate 19 that links to each other the welded with interior water pipe 17, reduces flame combustion temperature to control NOx's emission, and the water absorption heat in outer water pipe 16 and the interior water pipe 17 gets into in the boiler, thereby makes energy effective use.
When the mixed gas is sprayed out from the first slit 21 and the second slit 22, the speed is high due to the small slits, and simultaneously, the flame can be effectively cooled due to the porous plate 19 connected and welded with the inner water pipe 17, so that the tempering is avoided; the high air injection speed can cause the phenomenon of fire escape, the outer water pipe 16 is arranged at the center of the adjacent gap of the inner water pipe 17, the mixed gas speed is blocked, the combustion is effectively and stably realized, meanwhile, the circulating water in the outer water pipe 16 can take away heat, and the flame temperature is reduced; when the mixed gas enters the inner cavity through the mixed gas cylinder 4, the mixed gas can be uniformly distributed at the slits two 22 of the combustion surface 10 due to the resistance action of the slits one 21 and the slits two 22, so that the flame of the combustion surface 10 is stably, uniformly and completely combusted, the flame is effectively spread on the combustion surface 10, the concentrated combustion of the flame is controlled, and the combustion flame is reduced.
The tempering is controlled by the first slit 21, the second slit 22 and the water cooling, the stable combustion is realized by the outer water pipe 16, the cooling of the water of the outer water pipe 16 and the inner water pipe 17 and the spread combustion of the flame on the surface of the combustion surface 10 reduce the combustion intensity, thereby realizing the emission of NOx less than 30mg/Nm3。
The scope of the present invention includes, but is not limited to, the above embodiments, and the present invention is defined by the appended claims, and any alterations, modifications, and improvements that may occur to those skilled in the art are all within the scope of the present invention.

Claims (10)

1. The utility model provides an ultralow nitrogen combustor of ring face cold flame which characterized in that: the gas mixing device comprises a gas mixing cylinder body (4) used for inputting air and fuel gas, a water outlet pipe (5), a water inlet pipe (14), a water inlet tank (12), a water outlet tank (8), an outer water pipe (16) and an inner water pipe (17), wherein the gas mixing cylinder body (4) penetrates through the middle part of the water outlet tank (8) and is connected with a water outlet porous plate (9) on one side of the water outlet tank (8), the water inlet pipe (14) penetrates through the gas mixing cylinder body (4) and is connected with the middle part of a water inlet porous plate (11) on one side of the water inlet tank (12) in a penetrating manner, and one end of the water outlet pipe (5) is connected with the water;
the two ends of the outer water pipe (16) and the inner water pipe (17) are respectively communicated with the water inlet porous plate (11) at one side of the water inlet tank (12) and the water outlet porous plate (9) at one side of the water outlet tank (8), the outer water pipe (16) and the inner water pipe (17) are provided with a plurality of water inlet pipes, and are arranged in a circular arrangement, the inner water pipes (17) are positioned at the inner side of the outer water pipes (16), the outer part of the inner water pipe (17) is sleeved and connected with a plurality of perforated plates (19), a circular seam (20) is formed in a gap between two axially adjacent perforated plates (19) along the axial direction of the inner water pipe (17), a first slit (21) is formed in a gap between two circumferentially adjacent inner water pipes (17), a second slit (22) is formed in a gap between two circumferentially adjacent outer water pipes (16), the outer water pipe (16) and the inner water pipe (17) are arranged in a staggered mode in the circumferential direction, and the first slit (21) is communicated with the second slit (22).
2. The toroidal cold flame ultra low nitrogen burner of claim 1, wherein: the outer water pipes (16) and the inner water pipes (17) are uniformly arranged in the circumferential direction according to a circumferential or fan-shaped arrangement.
3. The toroidal cold flame ultra low nitrogen burner of claim 2, wherein: the outside suit welding of interior water pipe (17) has a plurality of perforated plates (19), has arc gasket (18) between two adjacent perforated plates (19), and arc gasket (18) are located the outside of interior water pipe (17).
4. The toroidal cold flame ultra low nitrogen burner of claim 1, wherein: two ends of the outer water pipe (16) and the inner water pipe (17) are respectively communicated and welded with a water inlet porous plate (11) of the water inlet tank (12) and a water outlet porous plate (9) of the water outlet tank (8); the water inlet pipe (14) is communicated and welded with the middle part of the water inlet porous plate (11) on one side of the water inlet tank (12).
5. The toroidal cold flame ultra low nitrogen burner of claim 1, wherein: go out the welding of water tank (8) one side and have flange (6), outlet pipe (5) pass flange (6) and communicate with each other with water tank (8), gas mixture barrel (4) pass flange (6) and the middle part of water tank (8) and with the hole welding of play water perforated plate (9), flange (6) and gas mixture barrel (4) circumferential weld.
6. The toroidal cold flame ultra low nitrogen burner of claim 5, wherein: ignition and fire detection subassembly (7) and sight glass (13) are installed to flange (6) circumference.
7. The toroidal cold flame ultra low nitrogen burner of claim 1, wherein: the device also comprises a fan (1) and a mixer (3); the fan (1) is connected with the mixer (3), a fuel gas inlet (15) is arranged on the mixer (3), and the mixer (3) is connected with the mixed gas cylinder body (4).
8. The toroidal cold flame ultra low nitrogen burner of claim 1, wherein: the perforated plate (19) is circular, the outer circular surface of the perforated plate (19) is in a curve shape, the outer water pipe (16) is connected with a concave part on the curve-shaped outer circular surface of the perforated plate (19), and a plurality of pipe holes used for inserting the inner water pipe (17) are distributed on the surface of the perforated plate (19) along the circumferential direction of the perforated plate.
9. The toroidal cold flame ultra low nitrogen burner of claim 1, wherein:
the water outlet tank (8) is a circular water tank;
the water outlet porous plate (9) is annular, a plurality of outer pipe holes used for being communicated with an outer water pipe (16) are distributed on the surface of the water outlet porous plate (9), and a plurality of inner pipe holes used for being communicated with an inner water pipe (17) are distributed on the surface of the water outlet porous plate (9);
the perforated plate of intaking (11) are circular, and the surface middle part of the perforated plate of intaking (11) is equipped with the well tube orifice that is used for communicateing inlet tube (14), and the surface distribution of the perforated plate of intaking (11) has a plurality of outer tube orifices that are used for communicateing outer water pipe (16), and the surface distribution of the perforated plate of intaking (11) has a plurality of interior tube orifices that are used for communicateing interior water pipe (17).
10. The toroidal cold flame ultra low nitrogen burner of claim 1, wherein: the water inlet pipe (14) is connected with a low water level water tank of the boiler, and the water outlet pipe (5) is connected with a high water level water tank of the boiler.
CN202010448050.1A 2020-05-25 2020-05-25 Annular surface cold flame ultralow nitrogen combustor Pending CN111594833A (en)

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Application Number Priority Date Filing Date Title
CN202010448050.1A CN111594833A (en) 2020-05-25 2020-05-25 Annular surface cold flame ultralow nitrogen combustor

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Application Number Priority Date Filing Date Title
CN202010448050.1A CN111594833A (en) 2020-05-25 2020-05-25 Annular surface cold flame ultralow nitrogen combustor

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CN111594833A true CN111594833A (en) 2020-08-28

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112555828A (en) * 2020-12-15 2021-03-26 西安交通大学 Hearth and combustor cooling type surface cold flame premixing gas boiler
CN112815312A (en) * 2021-02-22 2021-05-18 北京富士特锅炉有限公司 Ultra-low nitrogen combustion equipment with post-premixing cold flame combustion coupling matrix tube mode wall structure
CN117091296A (en) * 2023-09-07 2023-11-21 上海卡维迪环境工程有限公司 Condensing device of efficient heat recovery gas water heater

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112555828A (en) * 2020-12-15 2021-03-26 西安交通大学 Hearth and combustor cooling type surface cold flame premixing gas boiler
CN112815312A (en) * 2021-02-22 2021-05-18 北京富士特锅炉有限公司 Ultra-low nitrogen combustion equipment with post-premixing cold flame combustion coupling matrix tube mode wall structure
CN112815312B (en) * 2021-02-22 2021-10-19 北京富士特锅炉有限公司 Ultra-low nitrogen combustion equipment with post-premixing cold flame combustion coupling matrix tube mode wall structure
CN117091296A (en) * 2023-09-07 2023-11-21 上海卡维迪环境工程有限公司 Condensing device of efficient heat recovery gas water heater
CN117091296B (en) * 2023-09-07 2024-04-30 上海卡维迪环境工程有限公司 Condensing device of efficient heat recovery gas water heater

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