CN210568425U - Multistage combustion biomass gas low-nitrogen combustor - Google Patents
Multistage combustion biomass gas low-nitrogen combustor Download PDFInfo
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- CN210568425U CN210568425U CN201921381499.XU CN201921381499U CN210568425U CN 210568425 U CN210568425 U CN 210568425U CN 201921381499 U CN201921381499 U CN 201921381499U CN 210568425 U CN210568425 U CN 210568425U
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Abstract
The utility model discloses a multistage burning living beings gas low nitrogen combustor, including central wind channel and at least two by interior toward encircleing in proper order outward the gas passageway that central wind channel set up, and the periphery of each gas passageway all is equipped with the supplementary wind channel that encircles its setting, supplementary wind channel separates adjacent gas passageway, the export of central wind channel, gas passageway and supplementary wind channel three front end flushes, other one-to-one is equallyd divide to central wind channel, gas passageway and supplementary wind channel three's rear end and is equipped with the entry. The utility model discloses a set up two at least gas passageways of variation in size of a dimension and form power adjustable's multistage combustor on the coaxial, the quantity of the gas passageway that the accessible control used like this comes controller combustion power with the size that corresponds to adapt to different power needs, overall structure is simple and easy to assemble.
Description
Technical Field
The utility model belongs to the technical field of combustion apparatus, concretely relates to multistage burning living beings gas low NOx burner.
Background
The biomass energy is the fourth most energy in the world and accounts for about 14 percent of the total energy consumption in the world. The biomass energy source is wide, the volatile content is high, the ash content is low, the sulfur content is low, and the growth environment absorbs CO2CO in an amount corresponding to the combustion emissions2Amount, therefore CO, achieved in energy conversion processes2The net discharge amount is approximate to zero, and the greenhouse effect is favorably improved. The research and development of the technology for efficiently utilizing the biomass energy, the conventional fossil energy conservation and the energy structure optimization have very important significance. The biomass gas is a combustible gas produced by crop straws and forestry wastes through a gasification furnace, is a way for biomass energy to develop towards large-scale industrial application, and is gradually popularized and utilized at present.
The power of the biomass burner is related to the shape and the size of the burner, generally, the larger the size is, the higher the corresponding power is, and conversely, the smaller the size is, the lower the corresponding power is. Generally, large-sized burners are used in high-load applications, while small-sized burners are used in low-load applications, which ensures that burners of different sizes are most efficient at the respective loads; however, when the load demand is not constant, the combustors with different shapes and sizes need to be installed at the same time, the whole structure is complex, the installation is troublesome, the cost is high, if the high-power combustor is forcibly powered down to be used at low load, the efficiency is reduced, the energy consumption is increased, insufficient combustion is caused, and energy is wasted.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome current technical defect, provide a multistage burning living beings gas low nitrogen combustor, form power adjustable multistage combustor through set up two at least gas passageways of variation in size of a dimension on the coaxial, the quantity of the gas passageway that the accessible control used like this and the size that corresponds come control burner power to adapt to different power needs, overall structure is simple and easy to assemble.
In order to solve the technical problem, the utility model provides a multistage burning living beings gas low nitrogen burner, including central wind channel and at least two by interior toward encircleing in proper order the gas passageway that central wind channel set up, and the periphery of each gas passageway all is equipped with the supplementary wind channel of encircleing its setting, supplementary wind channel separates adjacent gas passageway, the export of central wind channel, gas passageway and supplementary wind channel three front end flushes, other one-to-one is equipped with the entry is equallyd divide to central wind channel, gas passageway and supplementary wind channel three's rear end.
Furthermore, the central air duct, the auxiliary air duct and the gas channel are all annular channels.
Furthermore, the length of each annular channel from inside to outside in the multistage burning biomass gas low-nitrogen combustor is gradually reduced, and the rear end of each annular channel arranged on the inner side is made to protrude out of the rear end of the annular channel arranged around the periphery of the annular channel.
Furthermore, the inlets of the central air duct, the gas channel and the auxiliary air duct are correspondingly arranged on the periphery of the rear end of the central air duct.
Furthermore, the inlets of the gas channel and the auxiliary air channel are correspondingly arranged on the periphery of the rear end of the gas channel, and the inlet of the central air channel is arranged at the end part of the rear end of the central air channel.
Furthermore, the inlets of the gas channel and the auxiliary air channel face the same direction or face opposite directions respectively.
Furthermore, a plurality of guide fins arranged around the outlets of the central air duct and the auxiliary air duct are arranged at the outlets of the front ends of the central air duct and the auxiliary air duct.
Furthermore, the guide fins are obliquely arranged at the front end outlet of the central air duct or the auxiliary air duct in a clockwise or anticlockwise direction.
Furthermore, the inlets of the central air duct, the gas channel and the auxiliary air duct are all provided with connecting flanges.
Furthermore, valves for adjusting the flow are arranged on the central air duct, the fuel gas channel and the auxiliary air duct.
The utility model discloses following beneficial effect has:
the utility model discloses a multistage burning living beings gas low nitrogen burner forms power adjustable multistage burner through setting up at least two gas passageways that size is different on the same axle, and all be equipped with the auxiliary air duct in each gas passageway periphery and use with corresponding gas passageway cooperation, like this the burner power can be controlled through the quantity of the gas passageway of control use and corresponding size to adapt to different power needs, the burner simple structure of whole coaxial setting and convenient to assemble, can install this coaxial burner on the axis that makes the heated body best; and the guide fins which are obliquely arranged anticlockwise or clockwise are arranged at the outlets of the auxiliary air duct and the central air duct, so that air blown out of the air duct can be spirally diffused all around, and can be better mixed with gas flowing out of the gas channel for combustion.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, do not constitute a limitation of the invention, and in which:
FIG. 1 is a schematic diagram of a multi-stage biomass gas combustion low-nitrogen combustor in an embodiment;
FIG. 2 is a front view of a multi-stage biomass gas burning low-nitrogen burner in the embodiment;
FIG. 3 is a top view of a multi-stage biomass gas burning low-nitrogen burner in the embodiment;
FIG. 4 is a sectional view of a multi-stage biomass gas burning low-nitrogen burner in the embodiment.
Detailed Description
In order to fully understand the technical contents of the present invention, the present invention will be further described and explained with reference to the accompanying drawings and specific embodiments; it should be noted that, if "first" or "second" is described in the text, it is used to distinguish different components, and the like, and does not represent the order of precedence, and does not limit "first" and "second" to be different types.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments; based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.
Examples
As shown in fig. 1 to 4, the multi-stage biomass gas burning low-nitrogen burner shown in this embodiment includes a central air duct 1 and two gas passages 2 sequentially arranged from inside to outside around the central air duct 1, and an auxiliary air duct 3 arranged around the periphery of each gas passage 2 is provided at the periphery of each gas passage 2, the adjacent gas passages 2 are separated by the auxiliary air ducts 3, outlets at the front ends of the central air duct 1, the gas passages 2 and the auxiliary air ducts 3 are flush, and inlets for gas or air to flow into are respectively provided at the rear ends of the central air duct 1, the gas passages 2 and the auxiliary air ducts 3 in one-to-one correspondence; in the structure, the at least two gas channels with different sizes are coaxially arranged to form the multi-stage burner with adjustable power, and the periphery of each gas channel is provided with the auxiliary air channel to be matched with the corresponding gas channel for use, so that the power of the burner can be controlled by controlling the number of the used gas channels and the corresponding sizes to adapt to different power requirements.
Specifically, the central air duct 1, the auxiliary air duct 3 and the gas channel 2 are all annular channels; and the length of each annular channel outwards reduces gradually by interior in this multistage burning living beings gas low-nitrogen combustor, makes the rear end of each annular channel that sets up in the inboard all protrusion in the annular channel rear end that encircles its periphery and set up, and the rear end of each annular channel all shows out promptly, is favorable to coaxial entry setting of each annular channel, simplifies overall structure.
Specifically, the periphery of the exposed part at the rear end of each gas channel 2 and the auxiliary air channel 3 is respectively provided with a gas connecting pipe 21 and an air connecting pipe 31 which are integrally arranged, the gas connecting pipe 21 and the air connecting pipe 31 are used as inlets, and the inlet of the central air channel is arranged at the rear end part of the central air channel, namely the central air channel is a hollow pipe which penetrates through the front and the rear; and the rear end part of the central air duct and the front end parts of the gas connecting pipe and the air connecting pipe are respectively provided with a connecting flange 5, so that the central air duct and the gas connecting pipe are conveniently connected with an external air supply pipeline and an external air supply pipeline.
Specifically, the gas connecting pipe 21 and the air connecting pipe 31 face the same direction or face opposite directions respectively, and can be set according to actual site conditions, so that the gas connecting pipe is convenient and flexible; the arrangement in different directions can avoid the mutual influence of two adjacent connecting flanges, so that the axial size (namely the transverse size) of the multistage biomass gas burning low-nitrogen combustor can be reduced as much as possible.
In the embodiment, the front end outlets of the central air duct 1 and the auxiliary air duct 3 are respectively provided with a plurality of guide fins 4 arranged around the outlets, and the guide fins 4 are obliquely arranged at the front end outlets of the central air duct 1 or the auxiliary air duct 2 in a clockwise or anticlockwise direction, so that air blown out from the air ducts can be spirally emitted to the periphery, can be better mixed with gas flowing out from the gas channels for combustion, and can play a role in accelerating mixing; specifically, because the front end outlet of the central air duct is tubular, the guide fins 4 in the central air duct are blades which are obliquely distributed anticlockwise or clockwise, and the front end outlet of the auxiliary air duct is annular, the guide fins 4 in the central air duct are obliquely distributed anticlockwise or clockwise at equal intervals.
The utility model discloses an in other embodiments, all be equipped with the valve that is used for adjusting gas flow or air mass flow on central wind channel, gas passageway and the supplementary wind channel.
The utility model discloses an in other embodiments, still can be according to actual need, locate the periphery of its rear end with central wind channel entry, the rear end tip in central wind channel is inclosed promptly, sets up the air connecting pipe in the periphery of central wind channel rear end and uses as the entry.
The technical solutions provided by the embodiments of the present invention are described in detail above, and the principles and embodiments of the present invention are explained herein by using specific examples, and the descriptions of the above embodiments are only applicable to help understand the principles of the embodiments of the present invention; meanwhile, for a person skilled in the art, according to the embodiments of the present invention, there may be variations in the specific implementation manners and application ranges, and in summary, the content of the description should not be construed as a limitation to the present invention.
Claims (10)
1. The utility model provides a low nitrogen burner of multistage burning biomass gas, its characterized in that, includes central wind channel and at least two by interior toward encircleing in proper order outward the gas passageway that central wind channel set up, and the periphery of each gas passageway all is equipped with the supplementary wind channel of encircleing its setting, supplementary wind channel separates adjacent gas passageway, the export of central wind channel, gas passageway and supplementary wind channel three front end flushes, respectively the one-to-one is equipped with the entry is equallyd divide to central wind channel, gas passageway and supplementary wind channel three's rear end.
2. The multi-stage biomass-fired low-nitrogen burner as recited in claim 1, wherein the central air duct, the auxiliary air duct and the fuel gas channel are all annular channels.
3. The multi-stage biomass gas burning low-nitrogen burner as claimed in claim 2, wherein the length of each annular channel in the multi-stage biomass gas burning low-nitrogen burner is gradually reduced from inside to outside, so that the rear end of each annular channel arranged inside protrudes out of the rear end of the annular channel arranged around the periphery of the annular channel.
4. The multi-stage biomass gas burning low-nitrogen burner as claimed in claim 3, wherein the inlets of the central air duct, the gas channel and the auxiliary air duct are correspondingly arranged on the periphery of the rear end of the central air duct.
5. The multi-stage biomass gas burning low-nitrogen burner as claimed in claim 3, wherein inlets of the gas channel and the auxiliary air channel are correspondingly arranged on the periphery of the rear end of the burner, and an inlet of the central air channel is arranged at the end part of the rear end of the central air channel.
6. The multi-stage biomass-burning low-nitrogen burner as claimed in claim 5, wherein the inlets of the gas channel and the auxiliary air duct are both directed in the same direction or in opposite directions.
7. The multi-stage biomass gas burning low-nitrogen burner as claimed in any one of claims 1 to 6, wherein the outlets at the front ends of the central air duct and the auxiliary air duct are respectively provided with a plurality of guide fins arranged around the outlets.
8. The multi-stage biomass gas burning low-nitrogen burner as claimed in claim 7, wherein the guide fins are obliquely arranged at the front end outlet of the central air duct or the auxiliary air duct in a clockwise or counterclockwise direction.
9. The multi-stage biomass gas burning low-nitrogen burner as claimed in claim 8, wherein the inlets of the central air duct, the gas passage and the auxiliary air duct are provided with connecting flanges.
10. The multi-stage biomass gas burning low-nitrogen burner as claimed in claim 9, wherein valves for adjusting the flow rate are arranged on the central air duct, the gas passage and the auxiliary air duct.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921381499.XU CN210568425U (en) | 2019-08-23 | 2019-08-23 | Multistage combustion biomass gas low-nitrogen combustor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921381499.XU CN210568425U (en) | 2019-08-23 | 2019-08-23 | Multistage combustion biomass gas low-nitrogen combustor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210568425U true CN210568425U (en) | 2020-05-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921381499.XU Active CN210568425U (en) | 2019-08-23 | 2019-08-23 | Multistage combustion biomass gas low-nitrogen combustor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210568425U (en) |
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2019
- 2019-08-23 CN CN201921381499.XU patent/CN210568425U/en active Active
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