CN110260318B - Ultra-low nitrogen emission combustor - Google Patents
Ultra-low nitrogen emission combustor Download PDFInfo
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- CN110260318B CN110260318B CN201910572928.XA CN201910572928A CN110260318B CN 110260318 B CN110260318 B CN 110260318B CN 201910572928 A CN201910572928 A CN 201910572928A CN 110260318 B CN110260318 B CN 110260318B
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- connecting cylinder
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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
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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
- F23D14/46—Details, e.g. noise reduction means
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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
- F23D14/46—Details, e.g. noise reduction means
- F23D14/62—Mixing 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 relates to an ultra-low nitrogen emission combustor, which comprises a fan and a connecting cylinder, wherein the fan comprises a volute and a motor arranged on the volute, an air inlet and an air outlet are formed in the volute, the end part of one end of the connecting cylinder is connected with the air outlet of the volute, the other end of the connecting cylinder is connected with a mixing cylinder through a flange, the connecting cylinder is collinear with the central line of the mixing cylinder, a gas pipe is arranged in the mixing cylinder, one end of the gas pipe extends out of the connecting cylinder, an ignition assembly is arranged on the gas pipe, an annular plate with a circular ring-shaped section is fixedly connected to the inner wall of one end, far away from the air outlet, of the connecting cylinder, the end, far away from the air outlet, of the annular plate extends into the mixing cylinder, the outer wall of the annular plate is attached to the inner wall of the mixing cylinder, the combustion cylinder is horizontally arranged in the mixing cylinder, the outer wall of. The invention has the effect that the gas leakage does not occur at the joint of the connecting cylinder and the mixing cylinder.
Description
Technical Field
The invention relates to the technical field of ultralow-nitrogen clean combustion, in particular to an ultralow-nitrogen emission combustor.
Background
Nitrogen oxides are one of the main pollution sources of the atmosphere and are also important precursors of PM2.5 secondary particles. With the combustion and utilization of natural gas, liquefied petroleum gas and coal synthesis gas, the pollution problem of gas combustion, especially the reduction of the emission of nitrogen oxides, is an irreparable task. Therefore, the control of the generation of nitrogen oxides in the combustion process of natural gas and the vigorous development of low-nitrogen clean combustion technology have important significance. The combustion facilities including the combustor should have the characteristics of high combustion efficiency, low emission pollution and the like, and especially, attention needs to be paid to reducing the emission of nitrogen oxides to realize ultra-low nitrogen clean combustion.
The invention patent with application publication number CN109539253A discloses an ultralow-nitrogen gas burner, which comprises a fan and a horizontally arranged connecting cylinder, wherein the fan comprises a volute and a motor arranged on the volute, the volute is provided with an air inlet and an air outlet, the end part of one end of the connecting cylinder is connected with the air outlet of the volute, the other end of the connecting cylinder is connected with a horizontally arranged mixing cylinder through a flange, the connecting cylinder is collinear with the central line of the mixing cylinder, a gas pipe is arranged inside the mixing cylinder, one end of the gas pipe extends out of the outer side of the connecting cylinder through an extending hole arranged on the side wall of the connecting cylinder, and an ignition assembly is arranged on the gas pipe.
Among the above-mentioned technical scheme, the staff enters the air through the fan in to the mixing drum, the natural gas enters into the mixing drum through the gas pipe in, the ignition subassembly makes the oxygen in natural gas and the air burn in the one end that the air outlet was kept away from to the mixing drum, nevertheless because connecting cylinder and mixing drum are simple only through flange joint, thereby the junction leakproofness variation that can be perhaps because connecting bolt becomes loose through long-time use, thereby the flange gasket damages or circumstances such as flange board local deformation connecting cylinder and mixing drum, gas leakage can appear even, there is the potential safety hazard.
Disclosure of Invention
The invention aims to provide an ultra-low nitrogen emission burner which has the effect that gas leakage does not occur at the joint of a connecting cylinder and a mixing cylinder.
The above object of the present invention is achieved by the following technical solutions:
a burner with ultra-low nitrogen emission comprises a fan and a horizontally arranged connecting cylinder, wherein the fan comprises a volute and a motor arranged on the volute, the volute is provided with an air inlet and an air outlet, the end part of one end of the connecting cylinder is connected with the air outlet of the volute, the other end of the connecting cylinder is connected with a horizontally arranged mixing cylinder through a flange, the connecting cylinder is collinear with the central line of the mixing cylinder, a gas pipe is arranged inside the mixing cylinder, one end of the gas pipe extends out of the outer side of the connecting cylinder through an extending hole arranged on the side wall of the connecting cylinder, an ignition assembly is arranged on the gas pipe, an annular plate with a circular cross section is fixedly connected on the inner wall of one end of the connecting cylinder far away from the air outlet, the end of the annular plate far away from the air outlet extends into the mixing cylinder, the outer wall of the annular plate is attached to the inner wall of the mixing cylinder, the, the terminal surface that the one end of connecting cylinder is close to the combustion cylinder supports on the terminal surface of annular plate, the outside that the connecting cylinder was kept away from to the mixing drum is provided with water conservancy diversion circle and keeps away from the one end of connecting cylinder for the throat, and the terminal surface that the connecting cylinder was kept away from to the combustion cylinder one end is fixed on the inner wall of water conservancy diversion circle.
By adopting the technical scheme, the annular plate is fixed on the inner wall of one end of the connecting cylinder far away from the air outlet, the outer wall of the part of the annular plate extending into the mixing cylinder is attached to the inner wall of the mixing cylinder, when the connecting bolts of the flange become loose, the flange gasket is damaged or the flange plate is locally deformed due to long-term use, because of the existence of the annular plate, gas does not leak and the sealing performance of the joint of the connecting cylinder and the mixing cylinder is improved, the combustion cylinder is arranged in the mixing cylinder, the outer wall of the combustion cylinder is attached to the inner wall of the mixing cylinder, the end surface of one end of the combustion cylinder close to the connecting cylinder is propped against the end surface of the annular plate, the arrangement of the combustion cylinder can ensure that the mixing cylinder does not directly contact with the gas so as to play a role of heat insulation, and the contact surface of the combustion cylinder and the annular plate and the connection plane of the mixing cylinder and the connecting cylinder are not coplanar, so that the sealing property is improved, therefore, the ultra-low nitrogen emission combustor has the effect that gas leakage does not occur at the joint of the connecting cylinder and the mixing cylinder; the one end that the connecting cylinder was kept away from to the one end and the water conservancy diversion circle of connecting cylinder are kept away from to the water conservancy diversion circle setting at the mixing drum, the effect that the collection was drawn in can be played to the gas of mixing drum tip to the throat of water conservancy diversion circle, thereby it is more abundant when making the oxygen burning in natural gas and the air, because the outer wall of combustion cylinder and the inner wall laminating of mixing drum, can have inconveniently when dismantling the combustion drum alone, the terminal surface that the connecting cylinder was kept away from to the combustion drum is fixed on the inner wall of water conservancy diversion circle, thereby the combustion drum sets up as an organic whole with the water conservancy diversion circle, when needs are dismantled or are installed the combustion drum, only need to operate the water conservancy diversion circle in the mixing drum outside can, and is simple and convenient, thereby the structure that makes.
The invention is further configured to: the lower surface of one end of the annular plate, which is far away from the mixing barrel, is an arc-shaped guide surface.
Through adopting above-mentioned technical scheme, because the one end that the mixing drum was kept away from to the annular plate is just to the air outlet of fan, the air current can move along arc guide face, and the setting up of arc guide face makes the terminal surface of annular plate can not block the air current, and can play the effect of gathering to the air current.
The invention is further configured to: and one end of the annular plate, which is far away from the connecting cylinder, is provided with a high-temperature-resistant sealing gasket.
Through adopting above-mentioned technical scheme, when the one end that the combustion cylinder is close to the connecting cylinder supports the terminal surface at the annular plate, the setting up of high temperature resistant sealed pad can make the contact between the two inseparabler, can improve the leakproofness of junction to it is more reasonable to make the structure of ultralow nitrogen emission combustor.
The invention is further configured to: a plurality of fixed slots are formed in the outer wall of one end, away from the connecting cylinder, of the mixing cylinder, a plurality of fixing holes are formed in the positions, corresponding to the fixed slots, of the diversion rings, and fixing assemblies capable of fixing the positions of the diversion rings are arranged in the fixing holes and the fixed slots.
Through adopting above-mentioned technical scheme, fixed subassembly's setting can play fixed effect to the water conservancy diversion circle, and the relative mixing drum of fixed back water conservancy diversion circle can not move again, because the position of water conservancy diversion circle and combustion cylinder consequently setting up as an organic whole also obtains fixedly, when needs are dismantled water conservancy diversion circle and combustion cylinder directly take off fixed subassembly then extract combustion cylinder and water conservancy diversion circle can.
The invention is further configured to: the fixing assembly comprises a fixing screw rod, and the bottom of the fixing screw rod is in threaded connection with the inside of the fixing groove.
Through adopting above-mentioned technical scheme, when needs installation water conservancy diversion circle and combustion cylinder, the staff inserts the combustion cylinder the inside of mixing drum and the water conservancy diversion snare is established in the outside of mixing drum, and clamping screw passes the inside of fixed orifices and bottom threaded connection at the fixed slot, and the position of water conservancy diversion circle and combustion cylinder is fixed no longer to be removed this moment, when needs dismantle water conservancy diversion circle and combustion cylinder, unscrew clamping screw then take off can.
The invention is further configured to: the terminal surface fixedly connected with nut of the one end that fixed screw kept away from the fixed slot, the nut is kept away from and is seted up interior hexagonal groove on fixed screw's the lateral wall, and fixed screw's length is greater than the length of fixed orifices and is less than the whole length of fixed orifices and fixed slot.
Through adopting above-mentioned technical scheme, the nut is fixed in the one end that fixed slot was kept away from to clamping screw, because clamping screw's length is greater than the length of fixed orifices and is less than the whole length of fixed orifices and fixed slot, thereby when the nut was close to one side lateral wall of clamping screw and the outer wall laminating of water conservancy diversion circle, clamping screw's bottom can not contact the diapire of fixed slot, the nut has been kept away from and has been seted up the interior hexagonal groove on clamping screw's the lateral wall, the setting in interior hexagonal groove makes things convenient for the staff to rotate clamping screw, thereby be convenient for the dismantlement and the installation of water conservancy diversion circle.
The invention is further configured to: the fixing hole is a strip-shaped hole.
Through adopting above-mentioned technical scheme, because the fixed orifices is the bar hole to when fixed water conservancy diversion circle and combustion cylinder, the staff can change the position of water conservancy diversion circle and combustion cylinder, thereby the terminal surface that makes the combustion cylinder be close to the one end of connecting cylinder that can be more convenient supports on the annular plate, and after the position adjustment finishes, rotatory clamping screw made the lateral wall of nut and the laminating of the outer wall of water conservancy diversion circle.
In conclusion, the beneficial technical effects of the invention are as follows:
1. the annular plate is fixed on the inner wall of one end of the connecting cylinder far away from the air outlet, the outer wall of the part of the annular plate extending into the mixing cylinder is attached to the inner wall of the mixing cylinder, when the connecting bolts of the flange become loose, the flange gasket is damaged or the flange plate is locally deformed due to long-term use, because of the existence of the annular plate, gas does not leak and the sealing performance of the joint of the connecting cylinder and the mixing cylinder is improved, the combustion cylinder is arranged in the mixing cylinder, the outer wall of the combustion cylinder is attached to the inner wall of the mixing cylinder, the end surface of one end of the combustion cylinder close to the connecting cylinder is propped against the end surface of the annular plate, the arrangement of the combustion cylinder can ensure that the mixing cylinder does not directly contact with the gas so as to play a role of heat insulation, and the contact surface of the combustion cylinder and the annular plate and the connection plane of the mixing cylinder and the connecting cylinder are not coplanar, so that the sealing property is improved, therefore, the ultra-low nitrogen emission combustor has the effect that gas leakage does not occur at the joint of the connecting cylinder and the mixing cylinder;
2. the guide ring is arranged at one end of the mixing cylinder, which is far away from the connecting cylinder, and the end of the guide ring, which is far away from the connecting cylinder, is a necking;
3. because the fixed orifices are strip-shaped holes, when the guide ring and the combustion cylinder are fixed, the position of the guide ring and the combustion cylinder can be changed by workers, so that the end face, close to one end of the connecting cylinder, of the combustion cylinder can be more conveniently abutted to the annular plate, and after the position adjustment is finished, the fixing screw rod is rotated to enable the side wall of the nut to be attached to the outer wall of the guide ring.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic structural view of the present invention (with the connecting cylinder, mixing cylinder, combustion cylinder and flow guiding ring removed);
fig. 3 is a schematic cross-sectional structure of the present invention.
In the figure, 1, a fan; 11. a volute; 111. an air inlet; 112. an air outlet; 12. a motor; 2. a connecting cylinder; 21. an outlet hole; 22. an annular plate; 221. an arc-shaped guide surface; 222. a high temperature resistant seal gasket; 3. a mixing drum; 31. fixing grooves; 32. a fixing assembly; 321. fixing the screw rod; 322. a nut; 4. a gas pipe; 41. an adjusting valve group; 411. a butterfly valve; 412. a servo motor; 42. an ignition assembly; 51. a combustion can; 52. a flow guide ring; 521. and (7) fixing holes.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1 and 2, the ultra-low nitrogen emission burner disclosed by the invention comprises a fan 1 and a horizontally arranged connecting cylinder 2, wherein the fan 1 comprises a volute 11 and a motor 12 mounted on the volute 11, an air inlet 111 and an air outlet 112 are formed in the volute 11, one end of the connecting cylinder 2 is connected to the position of the air outlet 112 of the volute 11, the other end of the connecting cylinder is connected with the horizontally arranged mixing cylinder 3 through a flange, and the center lines of the connecting cylinder 2 and the mixing cylinder 3 are collinear. With reference to fig. 3, the inner wall of the end of the connecting cylinder 2 far away from the air outlet 112 is fixedly connected with an annular plate 22, the section of the annular plate 22 passing through the center line is annular, the end of the annular plate 22 far away from the air outlet 112 extends into the mixing cylinder 3 and the outer wall is attached to the inner wall of the mixing cylinder 3, and the lower surface of the end of the annular plate 22 far away from the mixing cylinder 3 is an arc-shaped guide surface 221 and the end far away from the connecting cylinder 2 is provided with a high-temperature-resistant sealing gasket 222.
Referring to fig. 3, a flow guiding ring 52 is arranged on the outer side of one end of the mixing cylinder 3, which is far away from the connecting cylinder 2, and one end of the flow guiding ring 52, which is far away from the connecting cylinder 2, is a throat, a combustion cylinder 51 is horizontally arranged in the mixing cylinder 3, the outer wall of the combustion cylinder 51 is attached to the inner wall of the mixing cylinder 3, the end surface of one end of the combustion cylinder 51, which is close to the connecting cylinder 2, abuts against the end surface of the annular plate 22, and the end surface of the other end is fixed on the inner.
Referring to fig. 3, a plurality of fixing grooves 31 are formed in an outer wall of one end of the mixing cylinder 3, which is away from the connecting cylinder 2, a plurality of fixing holes 521 are formed in the guide ring 52 at positions corresponding to the fixing grooves 31, and referring to fig. 1, the fixing holes 521 are strip-shaped holes, and a fixing member 32 capable of fixing the position of the guide ring 52 is disposed inside the fixing holes 521 and the fixing grooves 31. Fixed subassembly 32 includes fixing screw 321, and fixing screw 321's length is greater than the length of fixed orifices 521 and is less than the whole length of fixed orifices 521 and fixed slot 31, and fixing screw 321's bottom threaded connection is inside fixed slot 31, and fixing screw 321 keeps away from the terminal surface fixedly connected with nut 322 of the one end of fixed slot 31, and nut 322 keeps away from and has seted up interior hexagonal groove on fixing screw 321's the lateral wall.
Referring to fig. 2 and 3, a gas pipe 4 is disposed inside the combustion cylinder 51, one end of the gas pipe 4 extends out of the outer side of the connecting cylinder 2 through an extending hole 21 formed in the side wall of the connecting cylinder 2 and is connected with a regulating valve group 41, the regulating valve group 41 includes a butterfly valve 411 and a servo motor 412, and the butterfly valve 411 is connected to an output end of the servo motor 412. An ignition assembly 42 is mounted on the gas pipe 4.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by the embodiments, therefore: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (7)
1. The utility model provides an ultralow nitrogen discharges combustor, connecting cylinder (2) including fan (1) and level setting, fan (1) includes spiral case (11) and installs motor (12) on spiral case (11), air intake (111) and air outlet (112) have been seted up on spiral case (11), the tip of connecting cylinder (2) one end is connected and the other end passes through flange joint has mixing drum (3) that the level set up with air outlet (112) of spiral case (11), the central line collineation of connecting cylinder (2) and mixing drum (3), the inside of mixing drum (3) is provided with gas pipe (4), the one end of gas pipe (4) is installed ignition subassembly (42) on stretching out hole (21) of seting up on connecting cylinder (2) lateral wall and stretching out the outside of connecting cylinder (2) and gas pipe (4), its characterized in that: the cross-section of fixedly connected with crossing the central line is annular ring plate (22) on the inner wall of the one end of air outlet (112) is kept away from in connecting cylinder (2), the one end that air outlet (112) was kept away from in annular ring plate (22) stretches into the inside of mixing drum (3) and the inner wall laminating of outer wall and mixing drum (3), the inside level of mixing drum (3) is provided with the outer wall laminating of combustion drum (51) and mixing drum (3), the terminal surface that combustion drum (51) is close to the one end of connecting cylinder (2) supports on the terminal surface of annular ring plate (22), the outside that connecting cylinder (2) was kept away from in mixing drum (3) is provided with kuppe (52) and kuppe (52) keep away from the one end of connecting cylinder (2) for the throat, the terminal surface that connecting cylinder (2) was kept away from in combustion drum (51) is fixed on the inner wall of kuppe (52).
2. The ultra-low nitrogen emissions burner of claim 1, wherein: the lower surface of one end of the annular plate (22) far away from the mixing cylinder (3) is an arc-shaped guide surface (221).
3. The ultra-low nitrogen emissions burner of claim 1, wherein: and a high-temperature-resistant sealing gasket (222) is arranged at one end, far away from the connecting cylinder (2), of the annular plate (22).
4. The ultra-low nitrogen emissions burner of claim 2, wherein: a plurality of fixing grooves (31) are formed in the outer wall of one end, away from the connecting cylinder (2), of the mixing cylinder (3), a plurality of fixing holes (521) are formed in the positions, corresponding to the fixing grooves (31), of the guide ring (52), and fixing assemblies (32) capable of fixing the positions of the guide ring (52) are arranged inside the fixing holes (521) and the fixing grooves (31).
5. The ultra-low nitrogen emissions combustor as claimed in claim 4, wherein: the fixing component (32) comprises a fixing screw rod (321), and the bottom of the fixing screw rod (321) is in threaded connection with the inside of the fixing groove (31).
6. The ultra-low nitrogen emissions burner of claim 5, wherein: the end face of one end, far away from the fixing groove (31), of the fixing screw rod (321) is fixedly connected with a nut (322), an inner hexagonal groove is formed in the side wall, far away from the fixing screw rod (321), of the nut (322), and the length of the fixing screw rod (321) is larger than that of the fixing hole (521) and smaller than the whole length of the fixing hole (521) and the fixing groove (31).
7. The ultra-low nitrogen emissions combustor as claimed in claim 4, wherein: the fixing hole (521) is a strip-shaped hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910572928.XA CN110260318B (en) | 2019-06-28 | 2019-06-28 | Ultra-low nitrogen emission combustor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910572928.XA CN110260318B (en) | 2019-06-28 | 2019-06-28 | Ultra-low nitrogen emission combustor |
Publications (2)
| Publication Number | Publication Date |
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| CN110260318A CN110260318A (en) | 2019-09-20 |
| CN110260318B true CN110260318B (en) | 2020-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910572928.XA Active CN110260318B (en) | 2019-06-28 | 2019-06-28 | Ultra-low nitrogen emission combustor |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2927375B2 (en) * | 1992-08-25 | 1999-07-28 | 東京瓦斯株式会社 | Surface combustion burner device |
| CN206310490U (en) * | 2016-12-22 | 2017-07-07 | 天津源星化工有限公司 | A kind of novel intelligent combustor |
| CN207407340U (en) * | 2017-09-07 | 2018-05-25 | 温岭威索燃烧器有限公司 | Low NO |
| CN208057932U (en) * | 2018-04-21 | 2018-11-06 | 四川川钨硬质合金有限公司 | A kind of strengthened sealing ring |
| CN208253578U (en) * | 2018-05-21 | 2018-12-18 | 浙江斯特利热能设备制造有限公司 | gas burner |
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2019
- 2019-06-28 CN CN201910572928.XA patent/CN110260318B/en active Active
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