CN213872687U - Multi-gun cyclone type low-nitrogen burner - Google Patents
Multi-gun cyclone type low-nitrogen burner Download PDFInfo
- Publication number
- CN213872687U CN213872687U CN202022702832.1U CN202022702832U CN213872687U CN 213872687 U CN213872687 U CN 213872687U CN 202022702832 U CN202022702832 U CN 202022702832U CN 213872687 U CN213872687 U CN 213872687U
- Authority
- CN
- China
- Prior art keywords
- cyclone
- gas
- ring
- gun
- burner
- 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.)
- Withdrawn - After Issue
Links
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 18
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 15
- 239000007789 gas Substances 0.000 claims abstract description 106
- 239000007921 spray Substances 0.000 claims abstract description 43
- 238000002485 combustion reaction Methods 0.000 claims abstract description 22
- 238000002347 injection Methods 0.000 claims abstract description 21
- 239000007924 injection Substances 0.000 claims abstract description 21
- 239000002737 fuel gas Substances 0.000 claims abstract description 16
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 14
- 239000003345 natural gas Substances 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 4
- 239000003546 flue gas Substances 0.000 description 4
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 239000010426 asphalt Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000000567 combustion gas Substances 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000003245 coal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000004449 solid propellant Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Images
Abstract
The utility model provides a multi-gun rotational flow type low-nitrogen burner, which comprises a cyclone, a gas injection system and a burner cylinder body; the swirler and the fuel gas injection system are arranged in the combustor cylinder; the cyclone comprises a cyclone outer ring and a cyclone inner ring which are concentrically arranged, and cyclone straight blades arranged between the cyclone outer ring and the cyclone inner ring; a plurality of blade grooves are formed in the rotational flow straight blade; the outer part of the cyclone outer circular ring is concentrically provided with a through hole circular ring, and a plurality of cyclone through holes are formed in the through hole circular ring; the gas injection system comprises a central gas spray gun and a plurality of annular gas spray guns; the combustor cylinder body is also provided with a gas inlet ring which is communicated with an annular gas inlet; the combustor cylinder is also communicated with a main fuel gas inlet. By applying the technical scheme, the combustion effect of mixed combustion of natural gas and air can be optimized.
Description
Technical Field
The utility model relates to a low nitrogen burner field specifically indicates a many guns spiral-flow type low nitrogen burner.
Background
The asphalt stirring equipment in China mainly uses liquid and solid fuels such as diesel oil, heavy residual oil, fuel oil and various qualities of coal powder. Compared with the fuel, the natural gas has unique advantages in the aspects of fuel pretreatment flow, operability and environmental protection. Today, the importance of environmental protection is recognized by various industries in international and domestic fields and the work of environmental protection is put to a very important place.
Therefore, the gas burner is increasingly applied to the stirring equipment, and the explosive growth is more occurred in recent years. The gas burner is a generic term for a device that injects natural gas and air in a certain manner for mixed combustion. And the flue gas generated by the combustion of the burner contains the atmospheric pollutants NOx. In recent years, with the strict implementation of energy-saving and emission-reduction policies, the requirement for emission limitation of NOx in industrial flue gas is higher and higher. At present, a plurality of asphalt mixing plants do not use optimally designed gas burners, and the emission concentration of NOx in the flue gas is higher, so that the environmental pollution is serious.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a many guns spiral-flow type low NOx burner realizes optimizing the combustion effect of natural gas and air hybrid combustion.
In order to solve the technical problem, the utility model provides a multi-gun cyclone type low-nitrogen burner, which comprises a cyclone, a gas injection system and a burner cylinder; the swirler and the fuel gas injection system are arranged in the combustor cylinder; the cyclone comprises a cyclone outer ring and a cyclone inner ring which are concentrically arranged, and cyclone straight blades arranged between the cyclone outer ring and the cyclone inner ring; a plurality of blade grooves are formed in the rotational flow straight blade; a through hole circular ring is concentrically arranged outside the rotational flow outer circular ring, and a plurality of rotational flow through holes are formed in the through hole circular ring;
the gas injection system comprises a central gas spray gun and a plurality of annular gas spray guns, and the annular gas spray guns are arranged in a centrosymmetric manner by taking the central gas spray gun as a center; the top ends of the central gas spray gun and the annular gas spray gun are respectively provided with a boss in a protruding manner, and the bosses are respectively arranged concentrically with the central gas spray gun and the annular gas spray gun; a plurality of first branch circulation holes are uniformly formed in the circumferential direction of the boss and the circumferential direction of the tail end of the central gas spray gun connected with the boss;
the combustor cylinder body is also provided with a gas inlet ring, and the gas inlet ring is communicated with an annular gas inlet; the combustor cylinder is also communicated with a main fuel gas inlet.
In a preferred embodiment, a plurality of abdicating holes are arranged on the through hole circular ring along the circumferential direction, the central gas spray gun passes through the center of the rotational flow inner circular ring, and the annular gas spray gun passes through the abdicating holes.
In a preferred embodiment, two ends of the rotational flow straight blade are respectively connected with the rotational flow inner circular ring and the rotational flow outer circular ring; the rotational flow straight blades and the rotational flow inner circular ring are arranged at intervals of an angle in the radial direction.
In a preferred embodiment, the blade grooves are spherical in shape, the depth of the blade grooves is less than one fourth of the thickness of the straight swirl blades, and the distance between two blade grooves is 3 to 5 times the radius of the blade grooves.
In a preferred embodiment, the combustor cylinder comprises a nose cover, a throat and a cylinder body which are arranged in sequence; the diameter of the throat opening is gradually increased from the cylinder body to the head cover; the throat and the head cover form a combustion chamber.
In a preferred embodiment, a plurality of second branch circulation holes are uniformly formed in the boss on the annular gas spray gun and the circumferential direction of the annular gas spray gun.
In a preferred embodiment, the central gas injection lance communicates with the main gas inlet, and the annular gas injection lance communicates with the gas inlet ring.
Compared with the prior art, the technical scheme of the utility model possess following beneficial effect:
(1) the utility model discloses a swirler can form a turbulent layer through the straight blade processing of whirl when the air current flows, helps forming strong rotatory disturbance and air current loss to this forms the aerodynamic field that is more suitable for the burning in the stove, and the perturbance nature reinforcing of combustion gas flow, the abundant burning of stove gas, combustion state is more stable. In the case where the swirler is provided in the burner, the degree of mixing of the gas and the air is increased, the combustion intensity is increased, and the combustion torch in the furnace is shortened.
(2) The utility model discloses still optimize the structure of gas air inlet, can realize selecting the gas air inlet according to the work demand volume and admit air to reduce the waste of natural gas, also prevented to cause NOx's emission because of the gas burning is not abundant.
(3) The utility model discloses a structure that the swirler that annular gas injection system and blade were handled was optimized comprehensively is a combustor that combustion efficiency is high, and the nitrogen oxide emission is low. Through the low-nitrogen combustor, the gas is high in ignition speed, stable in flame, sufficient in gas and stable in combustion state, the probability of backfire and misfire is reduced, and the emission of NOx is effectively reduced.
Drawings
FIG. 1 is a schematic view of a multi-gun cyclone low-NOx burner according to a preferred embodiment of the present invention;
FIG. 2 is a schematic structural view of a cyclone according to a preferred embodiment of the present invention;
fig. 3 is a partially enlarged schematic view of a through hole ring according to a preferred embodiment of the present invention;
fig. 4 is a schematic partial structural view of a gas injection system according to a preferred embodiment of the present invention;
fig. 5 is a schematic structural diagram of a gas injection system according to a preferred embodiment of the present invention.
Detailed Description
The invention is further described with reference to the drawings and the detailed description.
A multi-gun cyclone low-nitrogen burner, referring to FIGS. 1 to 5, comprises a cyclone 1, a gas injection system 2 and a burner barrel 3; the swirler 1 and the gas injection system 2 are arranged in the combustor cylinder 3; the combustor cylinder 3 comprises a head cover 33, a throat 34 and a cylinder body 35 which are arranged in sequence; the diameter of the throat 34 gradually increases from the barrel 35 to the head cover 33; the throat 34 and the nose cap 33 form a combustion chamber. Good vortex motion can be formed in the process of mixing gas and air under the combustion chamber, and the mixing quality is improved. The cyclone 1 comprises a cyclone outer ring 12 and a cyclone inner ring 11 which are concentrically arranged, and cyclone straight blades 13 arranged between the cyclone outer ring 12 and the cyclone inner ring 11; a plurality of blade grooves 131 distributed in the row are formed in the rotational flow straight blade 13; due to the existence of the blade grooves 131, a turbulent layer is formed on the surface of the straight swirl blade 13 by airflow, and the turbulent layer tightly attached to the surface of the straight swirl blade 13 can effectively prevent the airflow from being separated on the surface of the straight swirl blade 13, so that on one hand, the flow loss of the airflow at the position is effectively reduced, a large amount of natural gas is saved, on the other hand, stable mixed airflow is formed, and the flame stability boundary is widened. A through hole ring 14 is concentrically arranged outside the rotational flow outer ring 12, and a plurality of rotational flow through holes 141 are arranged on the through hole ring 14; the air entering from the swirl through holes 141 is well mixed with natural gas, and the action of the swirler 1 is combined to contribute to forming strong rotational disturbance, so that an aerodynamic field more suitable for combustion is formed in the furnace, and the disturbance of combustion airflow is enhanced.
In this embodiment, 24 swirl straight blades 13 are provided, and both ends of each swirl straight blade 13 are respectively connected to the swirl inner ring 11 and the swirl outer ring 12; the rotational flow straight blades 13 and the rotational flow inner circular ring 11 are arranged at intervals in the radial direction. The shape of the blade groove 131 should be spherical, the depth of the blade groove 131 is less than one fourth of the thickness of the swirl straight blade 13, and the distance between two blade grooves 131 is 3 to 5 times of the radius of the blade groove 131. The parameters of the swirl vanes can be properly adjusted according to the actual working state, so that the mixing degree of the fuel gas and the air is enhanced, the combustion intensity is increased, and the aim of reducing the generation of NOx is fulfilled.
The gas injection system 2 comprises a central gas spray gun 21 and a plurality of annular gas spray guns 22, and the annular gas spray guns 22 are arranged in a centrosymmetric manner by taking the central gas spray gun 21 as a center; the top ends of the central gas spray gun 21 and the annular gas spray gun 22 are respectively provided with a boss 201 in a protruding manner, and the bosses 201 are respectively arranged concentrically with the central gas spray gun 21 and the annular gas spray gun 22; a plurality of first branch circulation holes 202 are uniformly formed in the circumferential direction of the boss 201 and the circumferential direction of the tail end of the central gas spray gun 21 connected with the boss 201; the first shunting holes 202 are axially and uniformly arranged with the central gas spray gun 21 in a vertical mode, so that the gas is sprayed farther and more uniformly, and the strong disturbance of the swirler 1 is beneficial to the mixing of the gas and air, so that the local high temperature is avoided, and the emission of NOx is reduced. The boss 201 on the annular gas spray gun 22 and the circumference of the annular gas spray gun 22 are uniformly provided with a plurality of second branch circulation holes 203. The second through-opening 203 towards the centre is provided in the annular gas lance 22, so that there is sufficient gas in the surrounding area, and the movement of the fluid in the head housing 33 is more compact when the gas passes the vanes of the swirler 1.
The combustor cylinder 3 is also provided with a gas inlet ring 36, and the gas inlet ring 36 is communicated with an annular gas inlet 31; the combustor basket 3 is also communicated with a main gas inlet 32.
In this embodiment, a plurality of abdicating holes 142 are circumferentially arranged on the through hole ring 14, the center gas spray gun 21 penetrates through the center of the swirl inner ring 11, and the annular gas spray gun 22 penetrates through the abdicating holes 142. The central gas spray gun 21 is communicated with the main gas inlet 32, and the annular gas spray gun 22 is communicated with the gas inlet ring 36.
Compare in utilizing single injection passage to admit air and light and burn, the utility model discloses based on the mode that many spray guns sprayed, the mixed of air and gas has been reinforceed to stranded gas trickle, has shortened the dwell time of flue gas in the high temperature district, is favorable to reducing the temperature of burning flame, NOx's production when effectively having reduced the burning.
When the workload demand is large, on one hand, the fuel gas can be introduced from the annular fuel gas inlet 31, passes through the fuel gas inlet ring 36 and enters the annular fuel gas spray gun 22 for spraying after being distributed, and on the other hand, the fuel gas can be introduced from the main fuel gas inlet 32, passes through the central fuel gas spray gun 21 and then is sprayed out from the first branch through hole 202; when the workload demand is reduced, one of the two air inlets can be selected to prevent the waste of fuel gas. The swirler 1 that the gas was handled through the blade mixes with the air, improves the disturbance nature of combustion air current to form the aerodynamic field who does benefit to continuous combustion in the stove, thereby realize the quick ignition of gas, and continuous, stable, abundant burning. Wherein the plurality of conduits distribute the combustion gases and ignite the mixed gases. The introduced gas can be ignited quickly and timely, and the introduced other gas and the gas can form a good aerodynamic field in the combustor, so that the combustion condition of the gas is stabilized, the combustion efficiency is improved, and the generation of NOx is effectively inhibited.
The embodiment of the utility model provides an in 1 swirler and gas injection system 2's structure with implement closely to combine, also prevent the gas separation through the turbulent layer of 1 formation of special swirler under the sufficient circumstances of assurance gas, improve gas and air mixing quality, the burning quality improves and forms stable flame to NOx's formation has been suppressed.
The above, only be the preferred embodiment of the present invention, but the design concept of the present invention is not limited to this, and any skilled person familiar with the technical field is in the technical scope disclosed in the present invention, and it is right to utilize this concept to perform insubstantial changes to the present invention, all belong to the act of infringing the protection scope of the present invention.
Claims (7)
1. A multi-gun rotational flow type low-nitrogen burner is characterized by comprising a rotational flow device, a fuel gas injection system and a burner cylinder body; the swirler and the fuel gas injection system are arranged in the combustor cylinder; the cyclone comprises a cyclone outer ring and a cyclone inner ring which are concentrically arranged, and cyclone straight blades arranged between the cyclone outer ring and the cyclone inner ring; a plurality of blade grooves are formed in the rotational flow straight blade; a through hole circular ring is concentrically arranged outside the rotational flow outer circular ring, and a plurality of rotational flow through holes are formed in the through hole circular ring;
the gas injection system comprises a central gas spray gun and a plurality of annular gas spray guns, and the annular gas spray guns are arranged in a centrosymmetric manner by taking the central gas spray gun as a center; the top ends of the central gas spray gun and the annular gas spray gun are respectively provided with a boss in a protruding manner, and the bosses are respectively arranged concentrically with the central gas spray gun and the annular gas spray gun; a plurality of first branch circulation holes are uniformly formed in the circumferential direction of the boss and the circumferential direction of the tail end of the central gas spray gun connected with the boss;
the combustor cylinder body is also provided with a gas inlet ring, and the gas inlet ring is communicated with an annular gas inlet; the combustor cylinder is also communicated with a main fuel gas inlet.
2. The multi-gun cyclone-type low-nitrogen burner as claimed in claim 1, wherein a plurality of relief holes are circumferentially provided on the through-hole ring, the central gas injection lance passes through the center of the cyclone inner ring, and the annular gas injection lance passes through the relief holes.
3. The multi-gun cyclone-type low-nitrogen burner as claimed in claim 2, wherein both ends of the cyclone straight vanes are connected to the cyclone inner ring and the cyclone outer ring, respectively; the rotational flow straight blades and the rotational flow inner circular ring are arranged at intervals of an angle in the radial direction.
4. The multi-gun cyclone low-nitrogen burner as claimed in claim 3, wherein the vane grooves are spherical in shape, the depth of the vane grooves is less than a quarter of the thickness of the straight vanes, and the distance between two vane grooves is 3 to 5 times the radius of the vane grooves.
5. The multi-lance swirl-type low-nitrogen burner of claim 4, wherein the burner barrel comprises a nose cap, a throat and a barrel in this order; the diameter of the throat opening is gradually increased from the cylinder body to the head cover; the throat and the head cover form a combustion chamber.
6. The multi-gun cyclone low-nitrogen burner as claimed in claim 5, wherein the boss of the annular gas burner and the circumferential direction of the annular gas burner are uniformly provided with a plurality of second branch flow holes.
7. The multi-gun cyclonic low nitrogen burner of claim 6, wherein the central gas lance communicates with the main gas inlet and the annular gas lance communicates with the gas inlet ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022702832.1U CN213872687U (en) | 2020-11-20 | 2020-11-20 | Multi-gun cyclone type low-nitrogen burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022702832.1U CN213872687U (en) | 2020-11-20 | 2020-11-20 | Multi-gun cyclone type low-nitrogen burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213872687U true CN213872687U (en) | 2021-08-03 |
Family
ID=77035395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022702832.1U Withdrawn - After Issue CN213872687U (en) | 2020-11-20 | 2020-11-20 | Multi-gun cyclone type low-nitrogen burner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213872687U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112283706A (en) * | 2020-11-20 | 2021-01-29 | 华侨大学 | Multi-gun cyclone type low-nitrogen burner |
-
2020
- 2020-11-20 CN CN202022702832.1U patent/CN213872687U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112283706A (en) * | 2020-11-20 | 2021-01-29 | 华侨大学 | Multi-gun cyclone type low-nitrogen burner |
| CN112283706B (en) * | 2020-11-20 | 2024-05-14 | 华侨大学 | Multi-gun spiral-flow type low-nitrogen combustor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102003710B (en) | Low emission high-power staged-combustion gas burner and gas collocation method thereof | |
| CN107543201B (en) | One kind is oil-poor directly to spray and mixes low pollution combustor | |
| WO2016104725A1 (en) | Burner, combustor, and gas turbine | |
| CN110131750B (en) | Gas turbine low-emission combustion chamber using gas fuel | |
| CN202253758U (en) | Air swirler | |
| CN109404967B (en) | Combustion chamber of gas turbine and gas turbine | |
| CN208920103U (en) | The axially staged combustion chamber of gas turbine | |
| CN111520717A (en) | Hierarchical low-nitrogen gas burner based on rotational flow | |
| CN103791518B (en) | A kind of combustion chamber fuel oil sprays and mixing arrangement and aero-engine | |
| CN104566471A (en) | Spray nozzle and gas turbine with same | |
| CN111457371A (en) | Low-nitrogen burner | |
| CN106196051A (en) | A kind of tubule premixed swirl low stain gas burner | |
| CN109973994B (en) | Low-nitrogen burner | |
| CN104566472A (en) | Spray nozzle and gas turbine | |
| CN213872687U (en) | Multi-gun cyclone type low-nitrogen burner | |
| CN109140501B (en) | Double-oil-way double-nozzle centrifugal nozzle structure with double-layer air hood | |
| CN110887040B (en) | Gas burner and low-nitrogen combustion method thereof | |
| CN109059045A (en) | A kind of poor premixed swirl nozzle of gaseous fuel low pollution combustor and loopful combustion chamber | |
| CN201885229U (en) | Low-emission high-power sectionalized combustion gas burner | |
| CN112283706B (en) | Multi-gun spiral-flow type low-nitrogen combustor | |
| CN212227021U (en) | Low-nitrogen combustor | |
| CN208418734U (en) | A kind of low-NOx combustor for natural gas and coal dust | |
| CN209399411U (en) | A kind of nozzle of combustion chamber, combustion chamber and miniature gas turbine | |
| CN212777340U (en) | Hierarchical low-nitrogen gas burner based on rotational flow | |
| CN212108382U (en) | Multi-nozzle air distribution low-nitrogen combustor |
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: 20210803 Effective date of abandoning: 20240514 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20210803 Effective date of abandoning: 20240514 |