CN210921373U - Integrated low-nitrogen gas burner - Google Patents
Integrated low-nitrogen gas burner Download PDFInfo
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- CN210921373U CN210921373U CN201921033976.3U CN201921033976U CN210921373U CN 210921373 U CN210921373 U CN 210921373U CN 201921033976 U CN201921033976 U CN 201921033976U CN 210921373 U CN210921373 U CN 210921373U
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Abstract
The utility model discloses a low nitrogen gas burner of integral type, include: combustor body and controller, this internal impeller that is provided with of combustor, the impeller is rotated by the motor drive with controller signal connection, establish the air outlet at the front end of combustor body, the air intake is established to the rear end, air intake department at the combustor body is provided with the air inlet end cover, be provided with the aperture adjustment mechanism that can adjust the air intake aperture in the air inlet end cover, install the flame tube in the air outlet department of combustor body, be provided with the gas rifle that ignites at the center of flame tube, it is provided with a plurality of outside gas guns to surround around igniting the gas rifle in the flame tube, outside gas gun divides two sets ofly, interval distribution around two sets of outside gas guns are. The utility model has the advantages that: simple structure, installation easy maintenance, the combustor is igniteed the success rate height, enables gas and combustion air ability intensive mixing even to effectively restrain the nitrogen oxide and discharge.
Description
Technical Field
The utility model relates to a combustion apparatus technical field, concretely relates to low nitrogen gas burner for industry and commercial boiler.
Background
At present, emission standards of atmospheric pollutants of boilers are established in many parts of China, and nitrogen oxides (NOx) are required to be controlled within 30mg/Nm or 50mg/Nm in dry labor and year harvesting. Low-NOx burners are the most commonly used and economical low-NO burnersXCombustion technology. However, the gas burners used in China at present all have the defects of nonuniform mixing of gas and combustion air, nonuniform combustion temperature, incapability of effectively inhibiting the generation amount of nitrogen oxides and the like.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a low nitrogen gas burner of integral type that enables gas and combustion-supporting air intensive mixing.
In order to achieve the above purpose, the utility model adopts the following technical scheme: low nitrogen gas burner of integral type includes: combustor body and controller, this internal impeller that is provided with of combustor, the impeller is rotated by the motor drive with controller signal connection, establish the air outlet at the front end of combustor body, the air intake is established to the rear end, air intake department at the combustor body is provided with the air inlet end cover, be provided with the aperture adjustment mechanism that can control regulation air intake aperture in the air inlet end cover, a flame tube is installed to air outlet department at the combustor body, be provided with the gas rifle that ignites at the center of a flame tube, it is provided with a plurality of outside gas guns to surround around igniting the gas rifle in a flame tube, outside gas gun divides two sets ofly, interval distribution around two sets of outside gas guns are.
Further, the aforementioned integrated low-nitrogen gas burner, wherein: the structure of the opening degree adjusting mechanism comprises: set up first air door adjusting damper and second air door adjusting damper in the air inlet end cover side by side, first air door adjusting damper articulates in the air inlet end cover through first pivot, second air door adjusting damper articulates in the air inlet end cover through the second pivot, first pivot parallels with the second pivot, second pivot one side axle head is connected with servo motor's output shaft, servo motor and controller signal connection, the opposite side axle head of second pivot is connected with the homonymy axle head of first pivot through link assembly, when controller control servo motor drives second pivot and second air door adjusting damper and rotates, the second pivot can drive first pivot and first air door adjusting damper synchronous rotation through link assembly, thereby make two air door adjusting damper adjust the air intake aperture.
Further, the aforementioned integrated low-nitrogen gas burner, wherein: the front end of the flame tube is provided with a porous air uniform distribution plate, the nozzles of the two groups of outer gas guns are respectively positioned on the front side and the rear side of the air uniform distribution plate, and the nozzles of the group of outer gas guns positioned on the front side outwards extend out of the flame tube.
Further, the aforementioned integrated low-nitrogen gas burner, wherein: the nozzles of the group of outer gas guns positioned on the front side are provided with a central spray hole and side spray holes; the nozzles of a group of outer gas guns positioned at the rear side are all provided with a central spray hole and lateral radial spray holes.
Further, the aforementioned integrated low-nitrogen gas burner, wherein: the impeller is sleeved on the output shaft of the motor and fixed on the output shaft of the motor through a plurality of locking bolts, so that the impeller is detachably and fixedly arranged on the output shaft of the motor.
Further, the aforementioned integrated low-nitrogen gas burner, wherein: the upper cover plate at the top of the burner body is provided with a fire observation hole for observing the combustion condition of flame.
Further, the aforementioned integrated low-nitrogen gas burner, wherein: each gas gun is connected with a gas pipe through a gas valve group, the gas valve group is in signal connection with a controller, and the gas valve group comprises a filter, a pressure stabilizing valve, a pressure gauge, a low-pressure switch, a combination valve, an ignition valve, a leakage detection switch and a regulating valve which are arranged on the gas pipe.
Through the implementation of the above technical scheme, the beneficial effects of the utility model are that: (1) the structure is simple, the installation and the maintenance are convenient, and the ignition success rate of the burner is high; (2) the fuel gas and the combustion air can be fully and uniformly mixed, the combustion is stable, the combustion temperature is more uniform, and the emission of nitrogen oxides is effectively inhibited; (3) the electronic proportion adjustment of the fuel gas and the combustion air can be realized, so that the ultralow emission of nitrogen oxides is realized on the basis of energy conservation.
Drawings
Fig. 1 is a schematic structural view of the integrated low-nitrogen gas burner of the present invention.
Fig. 2 is a schematic structural view in a top view of fig. 1.
Fig. 3 is a schematic structural view of the C-C section shown in fig. 1.
Fig. 4 is a schematic structural diagram of the gas valve group in fig. 1.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, 2, 3 and 4, the integrated low-nitrogen gas burner includes: the gas burner comprises a burner body 1 and a controller 2, wherein an impeller 3 is arranged in the burner body 1, the impeller 3 is driven by a motor 4 in signal connection with the controller 2 to rotate, an air outlet is formed in the front end of the burner body 1, an air inlet is formed in the rear end of the burner body 1, an air inlet end cover 5 is arranged at the air inlet of the burner body 1, an opening degree adjusting mechanism capable of adjusting the opening degree of the air inlet is arranged in the air inlet end cover 5, a flame tube 6 is installed at the air outlet of the burner body 1, an ignition gas gun 7 is arranged at the center of the flame tube 6, a plurality of outer gas guns are arranged in the flame tube 6 around the ignition gas gun 7 and are divided into two groups, namely a front outer gas gun group 81 and a rear outer gas gun group 82, and the front outer gas gun group 81 and the rear outer gas gun group 82 are; the front outer side gas gun group 81 and the rear outer side gas gun group 82 are designed to be distributed at intervals in the front-rear direction, so that the gas and the combustion air are partially pre-mixed in the flame tube, a single uniform mixed gas flow is gradually formed before the mixed gas is sprayed out of the flame tube, stable flame can be formed after ignition, and the gas can be used for injecting fluid at high speed to inject the flue gas backflow in the hearth, thereby being beneficial to reducing the flame temperature and reducing nitrogen oxides;
in this embodiment, the structure of the opening degree adjustment mechanism includes: the first air door adjusting baffle 91 and the second air door adjusting baffle 92 are arranged in the air inlet end cover 5 side by side, the first air door adjusting baffle 91 is hinged in the air inlet end cover 5 through a first rotating shaft 101, the second air door adjusting baffle 92 is hinged in the air inlet end cover 5 through a second rotating shaft 102, the first rotating shaft 101 is parallel to the second rotating shaft 102, one side shaft end of the second rotating shaft 102 is connected with an output shaft of a servo motor 11, the servo motor 11 is in signal connection with a controller 2, the other side shaft end of the second rotating shaft 102 is connected with the same side shaft end of the first rotating shaft 101 through a connecting rod assembly 12, when the controller 2 controls the servo motor 11 to drive the second rotating shaft 102 and the second air door adjusting baffle 92 to rotate, the second rotating shaft 102 can drive the first rotating shaft 101 and the first air door adjusting baffle 91 to synchronously rotate through the connecting rod assembly 12, thereby the opening degree of the air, the opening of the air inlet is adjusted, so that the air inlet amount of combustion air can be accurately controlled, the oxygen content in the flue gas is accurately controlled, and the emission of low nitrogen oxides is realized;
in this embodiment, a porous air uniform distribution plate 13 is disposed at the front end of the flame tube 6, the nozzles of the front outer side gas gun group 81 and the nozzles of the rear outer side gas gun group 82 are respectively located at the front side and the rear side of the air uniform distribution plate 13, and the nozzles of the front outer side gas gun group 81 located at the front side extend outwards out of the flame tube 6, so that when the gas sprayed from the rear outer side gas gun group 82 and the combustion air in the flame tube 6 pass through the air uniform distribution plate 13, partial premixing is realized, the gas and the combustion air can be further and fully mixed uniformly, the combustion temperature is more uniform, and the emission of nitrogen oxides is further effectively inhibited;
in this embodiment, the nozzles of the outer gas guns in the front outer gas gun group 81 are provided with a central nozzle hole and a side nozzle hole; the nozzles of each outer gas gun in the rear outer gas gun group 82 are provided with central spray holes and radial spray holes which enable the gas to be vertically sprayed to the side surface of the flame tube, and the spray holes are designed to facilitate partial mixing of the gas and air, so that temperature uniformity is realized, and the emission of nitrogen oxides is further effectively inhibited;
in the embodiment, the impeller 3 is sleeved on the output shaft of the motor 4 and is fixed on the output shaft of the motor 4 through a plurality of locking bolts, so that the impeller can be detachably and fixedly arranged on the output shaft of the motor, the installation is fast and convenient, the coaxiality is high, the assembly efficiency is improved, and the noise generated during the operation of the motor is reduced;
in the present embodiment, a fire observation hole 14 for observing the combustion condition of flames is provided on the upper cover plate 111 on the top of the burner body 1; in this embodiment, each gas gun is connected to a gas pipe through a gas valve group 15, the gas valve group 15 is in signal connection with the controller 2, and the gas valve group 15 includes a filter 151, a pressure stabilizing valve 152, a pressure gauge 153, a low-voltage switch 154, a combination valve 155, an ignition valve 156, a leak detection switch 157 and a regulating valve 158 which are arranged on the gas pipe, so that fuel required by combustion of the burner can be safely and stably supplied to a combustion area, the combustion temperature is more uniform, and nitrogen oxide emission is further effectively inhibited;
the working principle of the utility model is as follows:
the controller 2 controls the starting motor 4 and opens the gas valve group 15, the motor 4 drives the impeller 3 to rotate, combustion-supporting air is introduced into the burner body 1 through the air inlet, and then is sprayed into the hearth from the flame tube 5 through the air distribution plate 13, meanwhile, gas in the gas tube enters the ignition gas gun 7, the front outer side gas gun group 81 and the rear outer side gas gun group 82 through the gas valve group 15, the gas sprayed out of the rear outer side gas gun group 82 and the combustion-supporting air in the flame tube 6 are partially premixed and then are sprayed into the hearth through the air distribution plate 13, the gas sprayed out of the front outer side gas gun group 81 can be directly sprayed into the hearth, and after the ignition gas gun 7 is ignited, the combustion-supporting air and the gas are fully combusted in the hearth; in the combustion process, can adjust the air intake aperture through controller 2 control aperture adjustment mechanism, the accurate control combustion air's intake to oxygen content in the accurate control flue gas realizes low nitrogen oxide's emission, and the concrete operation process of air intake aperture regulation is: the controller 2 controls the servo motor 11 to drive the second rotating shaft 102 and the second air door adjusting baffle 92 to rotate, and the second rotating shaft 102 drives the first rotating shaft 101 and the first air door adjusting baffle 91 to synchronously rotate through the connecting rod assembly 12, so that the two air door adjusting baffles adjust the opening degree of the air inlet.
The utility model has the advantages that: (1) the structure is simple, the installation and the maintenance are convenient, and the ignition success rate of the burner is high; (2) the fuel gas and the combustion air can be fully and uniformly mixed, the combustion is stable, the combustion temperature is more uniform, and the emission of nitrogen oxides is effectively inhibited; (3) the electronic proportion adjustment of the fuel gas and the combustion air can be realized, so that the ultralow emission of nitrogen oxides is realized on the basis of energy conservation.
Claims (7)
1. Low nitrogen gas burner of integral type includes: combustor body and controller, its characterized in that: this internal impeller that is provided with at the combustor, the impeller is rotated by the motor drive with controller signal connection, establish the air outlet at the front end of combustor body, the air intake is established to the rear end, air intake department at the combustor body is provided with the air inlet end cover, be provided with the aperture adjustment mechanism that can adjust the air intake aperture in the air inlet end cover, install the flame tube in the air outlet department of combustor body, be provided with the gas rifle of igniteing at the center of flame tube, it is provided with a plurality of outside gas guns to surround the gas rifle of igniteing in the flame tube, outside gas gun divides two sets ofly, interval distribution around two sets of outside gas guns are.
2. The integrated low-nitrogen gas burner of claim 1, wherein: the structure of the opening degree adjusting mechanism comprises: set up first air door adjusting damper and second air door adjusting damper in the air inlet end cover side by side, first air door adjusting damper articulates in the air inlet end cover through first pivot, second air door adjusting damper articulates in the air inlet end cover through the second pivot, first pivot parallels with the second pivot, second pivot one side axle head is connected with servo motor's output shaft, servo motor and controller signal connection, the opposite side axle head of second pivot is connected with the homonymy axle head of first pivot through link assembly, when controller control servo motor drives second pivot and second air door adjusting damper and rotates, the second pivot can drive first pivot and first air door adjusting damper synchronous rotation through link assembly, thereby make two air door adjusting damper adjust the air intake aperture.
3. The integrated low-nitrogen gas burner of claim 1, wherein: the front end of the flame tube is provided with a porous air uniform distribution plate, the nozzles of the two groups of outer gas guns are respectively positioned on the front side and the rear side of the air uniform distribution plate, and the nozzles of the group of outer gas guns positioned on the front side outwards extend out of the flame tube.
4. The integrated low-nitrogen gas burner as claimed in claim 1, 2 or 3, wherein: the nozzles of the group of outer gas guns positioned on the front side are provided with a central spray hole and side spray holes; the nozzles of a group of outer gas guns positioned at the rear side are all provided with a central spray hole and lateral radial spray holes.
5. The integrated low-nitrogen gas burner of claim 1, wherein: the impeller is sleeved on the output shaft of the motor and fixed on the output shaft of the motor through a plurality of locking bolts, so that the impeller is detachably installed and fixed on the output shaft of the motor.
6. The integrated low-nitrogen gas burner of claim 1, wherein: the upper cover plate at the top of the burner body is provided with a fire observation hole for observing the combustion condition of flame.
7. The integrated low-nitrogen gas burner of claim 1, wherein: each gas gun is connected with a gas pipe through a gas valve group, the gas valve group is in signal connection with a controller, and the gas valve group comprises a filter, a pressure stabilizing valve, a pressure gauge, a low-pressure switch, a combination valve, an ignition valve, a leakage detection switch and a regulating valve which are arranged on the gas pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921033976.3U CN210921373U (en) | 2019-07-04 | 2019-07-04 | Integrated low-nitrogen gas burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921033976.3U CN210921373U (en) | 2019-07-04 | 2019-07-04 | Integrated low-nitrogen gas burner |
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| CN210921373U true CN210921373U (en) | 2020-07-03 |
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| CN201921033976.3U Active CN210921373U (en) | 2019-07-04 | 2019-07-04 | Integrated low-nitrogen gas burner |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111765460A (en) * | 2020-08-05 | 2020-10-13 | 北京硕融科技有限公司 | Outdoor full-premixing ultra-low nitrogen combustor |
-
2019
- 2019-07-04 CN CN201921033976.3U patent/CN210921373U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111765460A (en) * | 2020-08-05 | 2020-10-13 | 北京硕融科技有限公司 | Outdoor full-premixing ultra-low nitrogen combustor |
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