CN214536176U - Low-nitrogen type high-efficiency incandescent lamp - Google Patents
Low-nitrogen type high-efficiency incandescent lamp Download PDFInfo
- Publication number
- CN214536176U CN214536176U CN202120196815.7U CN202120196815U CN214536176U CN 214536176 U CN214536176 U CN 214536176U CN 202120196815 U CN202120196815 U CN 202120196815U CN 214536176 U CN214536176 U CN 214536176U
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- Prior art keywords
- fire
- fire gathering
- pipe
- plate
- hole
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 16
- 239000007789 gas Substances 0.000 claims abstract description 64
- 238000002485 combustion reaction Methods 0.000 claims abstract description 33
- 239000007921 spray Substances 0.000 claims abstract description 25
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 15
- 239000011148 porous material Substances 0.000 claims abstract description 11
- 238000005507 spraying Methods 0.000 claims abstract 2
- 239000000203 mixture Substances 0.000 claims description 14
- 239000002737 fuel gas Substances 0.000 claims description 8
- 238000006116 polymerization reaction Methods 0.000 description 4
- 238000005086 pumping Methods 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
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Abstract
The utility model discloses a low-nitrogen high-efficiency incandescent lamp, which comprises a gas pipe, a gas nozzle and a mixed gas pipe, wherein a plurality of self-suction air inlets are uniformly distributed on the circumferential wall of the lower part of the mixed gas pipe around the gas nozzle, the upper part of the mixed gas pipe is connected with a dilatation pressurizing chamber, a fire gathering disc with a T-shaped section is arranged at the top of the dilatation pressurizing chamber, a space-limited internal combustion chamber is arranged on the fire gathering disc, and an annular fire stabilizing disc is arranged on the fire-spraying port end surface of the space-limited internal combustion chamber; the fire gathering plate with the T-shaped section comprises a plate body and a central fire gathering pipe, the middle of the plate body is provided with a fire gathering hole for stabilizing fire, a plurality of anti-backfire spray holes are distributed on the plate body around the fire gathering hole, the bottom end of the central fire gathering pipe is provided with a fire gathering pore plate, a plurality of anti-backfire spray holes are distributed on the fire gathering pore plate, combustion-supporting air is injected at high speed by gas to be uniformly mixed in a mixed gas pipe, after reaching an expansion pressurizing chamber, the combustion-supporting air is uniformly sprayed out through the fire gathering hole after being expanded and pressurized, the combustion is stabilized after being ignited, and the central fire gathering hole and the annular fire stabilizing plate play a role in stabilizing flame.
Description
Technical Field
The utility model relates to a pilot lamp, especially a high-efficient pilot lamp of low nitrogen type suitable for spray gun for ignition.
Background
The pilot burner is used as an important component of an ignition system, is directly related to the safety problem of whether an ignition gas can be ignited in time, is one of key parts of the ignition system, and is widely applied to various ignition systems. The conventional pilot burner is usually formed by a relatively concentrated torch and jetting at a high speed because of pursuing flame rigidity, and the flame temperature is relatively high, so that a large amount of NOx is easily generated. NOx emission values are generally around 150mg/Nm and higher than current environmental protection standards. Some furnaces in the petrochemical refining industry do not need to provide external heat during normal operation, and often only a few incandescent lamps are lit as on-duty flames. In this case, the NOx emission of the heating furnace is always out of limits, and environmental penalties are faced. In addition, because the temperature in the heating furnace is lower under the working condition, the temperature is usually lower than the ignition temperature of CO at 600 ℃, so that the combustion of CO is incomplete, CO is discharged in an overproof manner, and the problem that NOx and CO are overproof needs to be solved at the same time.
Disclosure of Invention
The technical problem is as follows: the utility model aims at overcoming the defects existing in the prior art and providing the low-nitrogen high-efficiency incandescent lamp with simple structure, complete combustion, standard emission and good use effect.
The technical scheme is as follows: the utility model discloses a low-nitrogen high-efficiency pilot burner, including gas pipe, gas nozzle and mixed gas pipe, the gas nozzle is established at the gas pipe end, stretches into mixed gas pipe along with the gas pipe in, mixed gas pipe lower part be located the circumference wall around the gas nozzle on the equipartition have a plurality of from inhaling formula air intakes, mixed gas pipe upper portion is connected with the dilatation plenum chamber, the top of dilatation plenum chamber is equipped with the section and is the dish that gathers firely of T shape, gathers and is equipped with the spacing combustion chamber on the dish, is equipped with annular fire stabilizing disc on the bocca terminal surface of spacing combustion chamber; the fire gathering plate with the T-shaped section comprises a plate body and a central fire gathering pipe, wherein a fire gathering hole is formed in the middle of the plate body, a plurality of anti-backfire spray holes are distributed in the plate body around the fire gathering hole, a fire gathering pore plate is arranged at the bottom end of the central fire gathering pipe, a plurality of anti-backfire spray holes are distributed in the fire gathering pore plate, the top end of the central fire gathering pipe is fixed at a through hole in the middle of the plate body, and the central fire gathering pipe and the through hole in the middle of the plate body are on the same axis; the combustion-supporting air is injected at high speed by the fuel gas and is uniformly mixed in the mixed gas pipe, and the mixed gas is uniformly sprayed out through the fire gathering holes after reaching the capacity expansion pressurizing chamber for capacity expansion and pressurization.
The equivalent diameter ratio of the expansion pressurizing chamber to the mixed gas pipe is 2-3.
The section of the expansion pressurizing chamber is circular, square or polygonal.
The length-diameter ratio of the expansion pressurizing chamber is 1-5.
The anti-backfire spray hole has the aperture of 1-4 mm and the length-diameter ratio of 4-10.
The number of the plurality of tempering-proof spray holes on the fire gathering hole communicated with the fire gathering hole plate is 5-20% of the total number of the plurality of tempering-proof spray holes distributed on the disk body around the fire gathering hole.
The equivalent diameter ratio of the combustion chamber in the limited space to the equivalent diameter ratio of the expansion pressurizing chamber is 1-2.
The length-diameter ratio of the limited space internal combustion chamber is 0.5-2.
The hole area of the porous annular fire stabilizing plate accounts for 5-30% of the annular area.
Has the advantages that: since the technical scheme is used, the utility model discloses utilize evenly distributed's anti-backfire orifice with the dispersion of pilot burner flame as far as and the temperature is even to set up central authorities' steady fire and the steady fire structure of circumference, guarantee the stability and the burn-off rate of flame. The spacing space between the central fire gathering plate and the annular fire stabilizing plate forms a limited space internal combustion chamber, so that the degree of initial combustion in the limited space internal combustion chamber is ensured, and the burnout rate is improved. Because the flame energy that the hole of gathering sparks came out is great relatively, the fire is stablized more easily, makes the flame of gathering sparks hole the inside can not temper the dilatation pressure boost indoor through the hole of preventing tempering around gathering sparks hole to guarantee the safety of pilot burner. The combustion-supporting air is injected into the mixed air pipe through the high-speed injected fuel gas, the fuel gas is uniformly mixed and then enters the expansion pressurizing chamber, and the fuel gas is injected through the tempering-preventing spray holes and is ignited after being pressurized. The mixture of fuel and air sprayed from a part of small spray holes is collected by the fire gathering holes to form a certain amount of polymerization flame, the polymerization flame is stably combusted in the annular backflow zone around the fire gathering holes, so that the flame of the combustion chamber in the limited space is stabilized, and a plurality of small backflow zones are formed by the porous annular flame stabilizing disc arranged at the outlet of the combustion chamber in the limited space, so that the disturbance of the mixture is enhanced, and the stability of the flame is further enhanced. The novel energy-saving stove is simple in structure, convenient to use, complete in combustion, good in using effect and wide in practicability, and discharges after reaching standards.
Drawings
Fig. 1 is a schematic sectional view of the present invention.
Fig. 2 is a schematic perspective view of the present invention.
In the figure: 1-a gas inlet, 2-a gas pipe, 3-a gas nozzle, 4-a self-suction air inlet, 5-a mixed gas pipe, 6-an expansion pressurizing chamber, 7-a central fire gathering pipe, 8-an anti-backfire spray hole, 9-an annular fire stabilizing disc and 10-a limited space internal combustion chamber.
Detailed Description
The invention will be further described with reference to the following examples in which:
the utility model discloses a low-nitrogen high-efficiency pilot burner, which mainly comprises a gas pipe 2, a gas nozzle 3, a mixed gas pipe 5, a capacity expansion pressurizing chamber 6, a space-limited internal combustion chamber 10 and a fire gathering disc; gas nozzle 3 establishes at 2 ends of gas pipe, stretches into gas mixture pipe 5 along with gas pipe 2 in, gas nozzle 3 arranges with 5 coaxial lines of gas mixture pipe, 5 lower parts of gas mixture pipe be located the circumference wall around gas nozzle 3 and evenly arranged the self-priming air intake 4 of a plurality of bars, 5 upper portions of gas mixture pipe are connected with dilatation pumping chamber 6, dilatation pumping chamber 6 and gas mixture pipe 5's equivalent diameter ratio be 2~3, the cross-section of dilatation pumping chamber 6 is circular, square, or polygon, and 6 draw ratio of dilatation pumping chamber is 1~ 5. The top of dilatation plenum chamber 6 is equipped with the fire dish that gathers that the cross-section is T shape, gathers and is equipped with limit space internal combustion chamber 10 on the fire dish, the equivalent diameter ratio of the equivalent diameter of limit space internal combustion chamber 10 and dilatation plenum chamber 6 is 1~2, and the draw ratio of limit space internal combustion chamber 10 is 0.5~ 2. An annular fire stabilizing disc 9 is arranged on the end face of a fire nozzle of the space-limited internal combustion chamber 10; the hole area of the porous annular fire stabilizing plate 9 accounts for 5-30% of the annular area. The fire gathering plate with the T-shaped cross section comprises a plate body and a central fire gathering pipe 7, a fire gathering hole is formed in the middle of the plate body, a plurality of tempering-proof spray holes 8 entering the expansion pressurizing chamber 10 are distributed in the plate body around the fire gathering hole, the diameter of each tempering-proof spray hole 8 is 1-4 mm, and the length-diameter ratio of each tempering-proof spray hole is 4-10. The bottom end of the central fire gathering pipe 7 is provided with a fire gathering pore plate, a plurality of tempering-proof spray holes are distributed in the fire gathering pore plate, and the number of the tempering-proof spray holes in the fire gathering pore plate communicated with the fire gathering pore plate is 5-20% of the total number of the tempering-proof spray holes 8 distributed in the disk body around the fire gathering pore. The top end of the central fire gathering pipe 7 is fixed at the through hole in the middle of the disk body, and the central fire gathering pipe 7 and the through hole in the middle of the disk body are on the same axis and are positioned in the center of the expansion pressurizing chamber 6; the combustion-supporting air is injected at high speed by the fuel gas and is uniformly mixed in the mixed gas pipe 5, and the mixture is uniformly sprayed out through the fire gathering holes after reaching the expansion pressurizing chamber 6 for expansion and pressurization.
When the gas mixing device works, gas enters the gas pipe 2 from the gas inlet 1 and then enters the gas nozzle 3, the gas is sprayed out from the gas nozzle 3 at a high speed, air enters from the plurality of strip-shaped self-suction air inlets 4 at the bottom of the gas mixing pipe 5, and negative pressure is formed around the gas nozzle 3; air enters the mixed air pipe 5 from the self-suction air inlet 4 under the action of pressure difference, and fuel gas and air are mixed while moving in the mixed air pipe 5 and are uniformly mixed before flowing out of the mixed air pipe 5. The mixture of the gas and the air which are mixed uniformly enters the expansion pressurizing chamber 6 from the mixed gas pipe 5, a uniform pressure field is formed in the expansion pressurizing chamber 6, and then the mixture is uniformly sprayed out from the disk body around the fire gathering hole and the anti-backfire spray holes 8 on the fire gathering hole plate at the bottom end of the central fire gathering pipe 7 to enter the limited space internal combustion chamber 10 to form flame with a uniform temperature field. The flame gathering hole collects a part of the mixture of fuel and air sprayed from the backfire preventing nozzle hole in the central flame gathering pipe 7 to form a certain amount of polymerization flame, and the polymerization flame is stably combusted in an annular backflow zone around the flame gathering hole, so that the flame of the combustion chamber 10 in the limited space is stabilized. The porous annular fire stabilization plate 9 arranged at the outlet of the internal combustion chamber 10 in the limited space forms a plurality of small backflow areas, so that the disturbance of hot smoke is enhanced, and the stability of flame is further enhanced. The combustion-supporting air is injected at a high speed through the fuel gas and is uniformly mixed in the mixed gas pipe 5, the mixed gas reaches the expansion pressurizing chamber 6 for expansion pressurization, then the mixed gas is uniformly sprayed out through the flame spray port and is stably combusted after being ignited, the central fire gathering hole and the annular fire stabilizing disc 9 play a role in stabilizing flame, the uniformly distributed tempering-preventing spray holes 8 ensure the dispersion uniformity of the flame, the injected air quantity ensures the average temperature of the dispersed flame, and the two are combined to realize ultralow NOx emission. When the initial combustion reaches a certain degree in the limited space internal combustion chamber 10, the temperature in the limited space internal combustion chamber is raised by the heat generated by the combustion, the intensity of the initial combustion is ensured by the high-temperature environment, a large amount of CO is prevented from being generated, and the subsequent CO is ensured to be burnt out.
Claims (9)
1. The utility model provides a high-efficient incandescent lamp of low nitrogen type, includes gas pipe (2), gas nozzle (3) and gas mixture pipe (5), establishes at gas pipe (2) end in gas nozzle (3), stretches into gas mixture pipe (5) along with gas pipe (2) in its characterized in that: a plurality of self-suction air inlets (4) are uniformly distributed on the circumferential wall of the lower part of the mixed air pipe (5) around the gas nozzle (3), the upper part of the mixed air pipe (5) is connected with an expansion pressurizing chamber (6), a fire gathering plate with a T-shaped section is arranged at the top of the expansion pressurizing chamber (6), a space-limited inner combustion chamber (10) is arranged on the fire gathering plate, and an annular fire stabilizing plate (9) is arranged on the end face of a fire spraying port of the space-limited inner combustion chamber (10); the fire gathering plate with the T-shaped section comprises a plate body and a central fire gathering pipe (7), a fire gathering hole is formed in the middle of the plate body, a plurality of anti-backfire spray holes (8) are distributed in the plate body around the fire gathering hole, a fire gathering pore plate is arranged at the bottom end of the central fire gathering pipe (7), a plurality of anti-backfire spray holes are distributed in the fire gathering pore plate, the top end of the central fire gathering pipe (7) is fixed at a through hole in the middle of the plate body, and the central fire gathering pipe (7) and the through hole in the middle of the plate body are on the same axis; the combustion-supporting air is injected at high speed by the fuel gas and is uniformly mixed in the mixed gas pipe (5), and the mixture is uniformly sprayed out through the fire gathering holes after reaching the expansion pressurizing chamber (6) for expansion and pressurization.
2. A low nitrogen type high efficiency incandescent lamp as defined in claim 1, wherein: the equivalent diameter ratio of the expansion pressurizing chamber (6) to the mixed gas pipe (5) is 2-3.
3. A low nitrogen type high efficiency incandescent lamp as defined in claim 1 or 2, wherein: the section of the expansion pressurizing chamber (6) is circular, square or polygonal.
4. A low nitrogen type high efficiency incandescent lamp as defined in claim 1 or 2, wherein: the length-diameter ratio of the expansion pressurizing chamber (6) is 1-5.
5. A low nitrogen type high efficiency incandescent lamp as defined in claim 1, wherein: the anti-backfire spray hole (8) is 1-4 mm in aperture and 4-10 in length-diameter ratio.
6. A low nitrogen type high efficiency incandescent lamp as defined in claim 1, wherein: the number of the plurality of tempering-proof spray holes in the fire gathering hole communicated with the fire gathering hole plate is 5-20% of the total number of the plurality of tempering-proof spray holes (8) distributed on the disk body around the fire gathering hole.
7. A low nitrogen type high efficiency incandescent lamp as defined in claim 1, wherein: the equivalent diameter ratio of the finite space internal combustion chamber (10) to the equivalent diameter ratio of the expansion pressurizing chamber (6) is 1-2.
8. A low nitrogen type high efficiency incandescent lamp as defined in claim 1 or 7, wherein: the length-diameter ratio of the limited space internal combustion chamber (10) is 0.5-2.
9. A low nitrogen type high efficiency incandescent lamp as defined in claim 1, wherein: the hole area of the porous annular fire stabilizing plate (9) accounts for 5-30% of the annular area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120196815.7U CN214536176U (en) | 2021-01-25 | 2021-01-25 | Low-nitrogen type high-efficiency incandescent lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120196815.7U CN214536176U (en) | 2021-01-25 | 2021-01-25 | Low-nitrogen type high-efficiency incandescent lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214536176U true CN214536176U (en) | 2021-10-29 |
Family
ID=78311949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120196815.7U Withdrawn - After Issue CN214536176U (en) | 2021-01-25 | 2021-01-25 | Low-nitrogen type high-efficiency incandescent lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214536176U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112728539A (en) * | 2021-01-25 | 2021-04-30 | 江苏蓝创环保科技有限公司 | Low-nitrogen type high-efficiency incandescent lamp |
-
2021
- 2021-01-25 CN CN202120196815.7U patent/CN214536176U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112728539A (en) * | 2021-01-25 | 2021-04-30 | 江苏蓝创环保科技有限公司 | Low-nitrogen type high-efficiency incandescent lamp |
| CN112728539B (en) * | 2021-01-25 | 2024-08-27 | 江苏蓝创环保科技有限公司 | Low-nitrogen type pilot burner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20211029 Effective date of abandoning: 20240827 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20211029 Effective date of abandoning: 20240827 |