CN106871116B - Shaft rotational flow stepless regulation type low-nitrogen combustor - Google Patents
Shaft rotational flow stepless regulation type low-nitrogen combustor Download PDFInfo
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- CN106871116B CN106871116B CN201710138253.9A CN201710138253A CN106871116B CN 106871116 B CN106871116 B CN 106871116B CN 201710138253 A CN201710138253 A CN 201710138253A CN 106871116 B CN106871116 B CN 106871116B
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- pipe
- adjusting
- wind
- axial
- ring
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D1/00—Burners for combustion of pulverulent fuel
- F23D1/02—Vortex burners, e.g. for cyclone-type combustion apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2201/00—Burners adapted for particulate solid or pulverulent fuels
- F23D2201/20—Fuel flow guiding devices
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Abstract
The invention discloses a shaft rotational flow stepless regulation type low-nitrogen burner in the field of burners, which comprises an oil gun, a central air pipe, a gas pipe, a coal air pipe and an axial flow air pipe which are sleeved from inside to outside, wherein a gas channel is formed between the gas pipe and the central air pipe, a rotational flow air regulating mechanism is arranged in the gas channel and comprises a plurality of rotational flow air regulating fan plates uniformly arranged on the periphery of the central air pipe, the rotational flow air regulating fan plates are arranged on the periphery of the central air pipe through positioning screws, the rotational flow air regulating fan plates can swing around the positioning screws, the tail parts of the rotational flow air regulating fan plates are connected to a rotational flow air regulating ring through flexible shafts, the tail parts of the rotational flow air regulating ring are rotatably sleeved on the periphery of the central air pipe, and a first regulating rod for controlling the rotational flow air regulating ring to rotate is connected to the tail parts of the rotational flow air regulating ring.
Description
Technical Field
The present invention relates to a burner, and more particularly, to a burner nozzle.
Background
With the development of industry and the aggravation of industrial pollution, the environmental protection of industrial combustion equipment is more and more concerned, and the energy saving and emission reduction performance requirements of the industry on the industrial combustion equipment are also continuously improved, so that new requirements are put forward on the structural design of the industrial combustion equipment. Since industrial kilns require burners that burn fuels of different media, they maintain a properly stable flame diameter and flame length while simultaneously requiring the levels of pollutants emitted by them to be low.
The prior art has a multi-medium multi-channel discrete low NOx pulverized coal burner of a cement rotary kiln, and the publication number is: CN 101556041a, patent application number: 200910302580.9 it comprises four annular channels, from outside to inside in proper order axial flow wind channel 1, whirl wind channel 2, coal wind channel 3 and central wind channel 4, and the combustor center sets up coal water slurry pipeline 5, and the exit of coal water slurry pipeline 5 sets up coal water slurry nozzle 7. The device has the advantages that the entrainment capacity of the axial flow wind to the secondary wind is enhanced through the Laval pipe nozzles which are arranged discretely, the rotational flow wind flow is regulated through the upstream valve, the Laval pipe nozzles themselves do not have the capacity of regulating the axial flow wind flow, the rotational flow angle of the rotational flow wind cannot be regulated, and the full mixing of fuel and air cannot be ensured when the working condition changes.
Disclosure of Invention
The invention aims to provide a shaft rotational flow stepless regulation type low-nitrogen combustor which can be suitable for combustion of various mixed fuels, ensure combustion efficiency and reduce generation of NOx.
The purpose of the invention is realized in the following way: the utility model provides a stepless regulation formula low nitrogen combustor of axle whirl, includes by interior and overcoat oil gun, center tuber pipe, gas pipe, coal tuber pipe and the axial flue of arranging, form the gas passageway between gas pipe and the center tuber pipe, be provided with whirl wind adjustment mechanism in the gas passageway, whirl wind adjustment mechanism is including evenly a plurality of whirl wind adjusting fan plates of installing at center tuber pipe periphery, whirl wind adjusting fan plates installs at center tuber pipe periphery through set screw, whirl wind adjusting fan plates can swing around set screw, the afterbody of whirl wind adjusting fan plates is connected on whirl wind adjusting ring through flexible axle, the rotatable suit of whirl wind adjusting ring is in the periphery of center tuber pipe, the afterbody of whirl wind adjusting ring is connected with the first regulation pole of control whirl wind adjusting ring pivoted.
Compared with the prior art, the invention has the beneficial effects that:
1) The rotational flow angle of the rotational flow wind is adjustable and has an indication;
2) The rotational flow wind flow is adjustable and has an indication;
3) The blade angle of the cyclone wind outlet with adjustable wind speed is stepless adjustable, and the invention is suitable for the requirements of different working conditions on the cyclone strength and the cyclone angle of the burner, and can be used in the combustion work of various industrial kilns.
As an improvement of the invention, the cyclone fan adjusting fan plate is processed into a T-shaped structure, the positioning screw penetrates through the middle part of the cyclone fan adjusting fan plate to mount the cyclone fan adjusting fan plate on the central air pipe, the cyclone fan adjusting ring is processed into a step-shaped structure, the front end of the cyclone fan adjusting ring is inserted into a gap between the cyclone fan adjusting fan plate and the central air pipe, the flexible shaft is vertically arranged with the axis phase of the burner, one end of the flexible shaft is fixedly connected with the tail part of the adjusting fan plate, the other end of the flexible shaft is fixedly connected with the front end of the cyclone fan adjusting ring, the tail part of the cyclone fan adjusting ring is provided with a inclined chute, a pin roll is arranged in the inclined chute in a sliding way, the two ends of the pin roll are fixed on a U-shaped fork, the tail part of the U-shaped fork is fixedly connected with the first adjusting rod, and the rotation of the cyclone fan adjusting ring is realized by controlling the axial movement of the first adjusting rod. The flexible shaft can be flexibly installed in a narrow space in the combustor relative to the common shaft and the joint bearing, has a larger position offset angle, the common shaft and the joint bearing are 15 degrees and have larger installation space, the offset angle of the flexible shaft can reach 30 degrees to 45 degrees, the narrow space is flexible to install, and the maximum 50-degree adjustment requirement of the swirl vane can be met.
In order to enable the axial movement of the first adjusting rod to be more convenient, the moving distance is indicated, the tail of the first adjusting rod is connected with a first adjusting inner screw pipe, the first adjusting inner screw pipe is installed on a first installation flange, clamp spring grooves are formed in the positions of two sides of the first installation flange, clamp springs for a first shaft are arranged in the clamp spring grooves, the first adjusting inner screw pipe is guaranteed to be only rotatably arranged on the first installation flange and not to move back and forth, the tail of the first adjusting rod is provided with a first pointer, and a first scale matched with the first pointer is arranged on the outer wall of the central air pipe.
As a further improvement of the invention, an axial flow air adjusting mechanism is arranged in the axial flow air duct, the end part of the axial flow air duct is sealed by the end part of the coal air duct, and the axial flow air adjusting mechanism comprises a plurality of Laval nozzle-shaped through holes which are uniformly formed in the end part of the coal air duct.
As a further improvement of the invention, a locating pin is fixed on the end surface of the inner side of the coal air pipe, the axial flow air duct is provided with a mounting ring, a locating hole matched with the locating pin is formed in the mounting ring, a plurality of conical adjusting columns matched with the through holes are further arranged on the mounting ring, a second adjusting rod is fixedly connected to the mounting ring, and the axial movement of the second adjusting rod drives the mounting ring to axially slide along the outer wall of the coal air pipe. Compared with a conventional Laval pipe, the axial flow wind adjusting mechanism not only maintains the advantages that the conventional Laval pipe is used for accelerating in a expansion pipe by decelerating in supersonic air flow and in a contraction pipe, but also achieves the supersonic flow of the air flow under different pressure working conditions with different flow rates by arranging conical adjusting columns at the through holes, thereby achieving the requirements of the burner on small air quantity and large thrust, reducing the surplus coefficient of combustion-supporting air, promoting the full mixing of air and fuel, forming a high-efficiency smoke reflux area at the end part of a burner nozzle and reducing the generation of NOx.
In order to make the axial displacement of the second adjusting rod more convenient, and the displacement distance has the instruction, the second adjusting rod stretches out the axial-flow air duct setting, and the afterbody is connected with the second and adjusts interior screwed pipe, and the second is adjusted interior screwed pipe and is installed on second mounting flange, and the second is adjusted interior screwed pipe and is provided with the jump ring groove respectively in second mounting flange both sides position, the jump ring is used to the installation second shaft in the jump ring groove, ensures that it only rotationally sets up on second mounting flange and can not the drunkenness from beginning to end, and the afterbody of second adjusting rod also is provided with the second pointer, is provided with on the outer wall of coal tuber pipe with second pointer complex second scale.
In order to enable the fixing of the first adjusting rod and the second adjusting rod to be more stable and reliable, a first supporting lug plate for supporting the first adjusting rod is arranged on the outer wall of the central air pipe, and a second supporting lug plate for manufacturing the second adjusting rod is arranged on the outer wall of the coal air pipe.
In order to make the maintenance and installation of the invention more convenient and adapt to various working conditions, the ends of the central air pipe, the gas pipe, the coal air pipe and the axial flow air pipe are fixedly connected with nozzles, and the rotational flow air adjusting mechanism and the axial flow air adjusting mechanism are arranged in the corresponding nozzles.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present invention.
Fig. 2 is an enlarged view at a in fig. 1.
Fig. 3 is an enlarged view at B in fig. 1.
Fig. 4 is an enlarged view of fig. 1 at C.
FIG. 5 is a schematic view of the fit of the Laval nozzle-like through-hole and the tapered adjustment column of the present invention.
FIG. 6 is a schematic diagram of a cyclone wind adjusting mechanism in the present invention.
Fig. 7 is a schematic structural view of an axial flow wind adjusting mechanism in the present invention.
The spiral-flow type air-conditioning device comprises a 1 oil gun, a 2 central air pipe, a 3 gas pipe, a 4 coal air pipe, a 5 axial flow air pipe, a 6 rotational flow air adjusting mechanism, a 601 first adjusting rod, a 602U-shaped fork, a 603 pin shaft, a 604 rotational flow air adjusting ring, a 604a inclined sliding groove, a 605 flexible shaft, 606 positioning screws, 607 rotational flow air adjusting fan plates, 608 first pointers, 609 first scales, 610 first mounting flanges, 611 first shaft snap springs, 612 first adjusting inner spiral pipes, 7 axial flow air adjusting mechanisms, 701 positioning pins, 702 second adjusting rods, 703 mounting rings, 704 screws, 705 second pointers, 706 second scales, 707 second mounting flanges, 708 second shaft snap springs, 709 second adjusting inner spiral pipes, 710 through holes and 711 conical adjusting columns.
Detailed Description
The shaft rotational flow stepless regulation type low-nitrogen burner as shown in figures 1-7 comprises an oil gun 1, a central air pipe 2, a gas pipe 3, a coal air pipe 4 and an axial flow air pipe 5 which are sleeved from inside to outside, wherein a gas channel is formed between the gas pipe 3 and the central air pipe 2;
the gas channel is internally provided with a cyclone wind adjusting mechanism 6, the cyclone wind adjusting mechanism 6 comprises a plurality of cyclone wind adjusting fan plates 607 which are uniformly arranged on the periphery of the central air pipe 2, the cyclone wind adjusting fan plates 607 are processed into a T-shaped structure, the cyclone wind adjusting fan plates 607 are arranged on the periphery of the central air pipe 2 through positioning screws 606, the positioning screws 606 penetrate through the middle parts of the cyclone wind adjusting fan plates 607 to mount the cyclone wind adjusting fan plates 607 on the central air pipe 2, the cyclone wind adjusting fan plates 607 can swing around the positioning screws 606, the tail parts of the cyclone wind adjusting fan plates 607 are connected on the cyclone wind adjusting ring 604 through flexible shafts 605, the cyclone wind adjusting ring 604 is processed into a step-shaped structure, the front ends of the cyclone wind adjusting ring 604 are inserted into a gap between the cyclone wind adjusting fan plates 607 and the central air pipe 2, the flexible shafts 605 are vertically arranged with the axial phase of the burner, one ends of the flexible shafts 605 are fixedly connected with the tail parts of the adjusting fan plates, the other end is fixedly connected with the front end of a cyclone wind adjusting ring 604, the cyclone wind adjusting ring 604 is rotatably sleeved on the periphery of a central air pipe 2, the tail part of the cyclone wind adjusting ring 604 is connected with a first adjusting rod 601 for controlling the cyclone wind adjusting ring 604 to rotate, the tail part of the cyclone wind adjusting ring 604 is provided with a inclined chute 604a, a pin shaft 603 is arranged in the inclined chute 604a in a sliding way, two ends of the pin shaft 603 are fixed on a U-shaped fork 602, the tail part of the U-shaped fork 602 is fixedly connected with the first adjusting rod 601, the rotation of the cyclone wind adjusting ring 604 is realized by controlling the axial movement of the first adjusting rod 601, the tail part of the first adjusting rod 601 is connected with a first adjusting inner screw 612, the first adjusting inner screw 612 is arranged on a first mounting flange 610, clamping spring grooves are respectively arranged at two sides of the first mounting flange 610 on the first adjusting inner screw 612, a first shaft clamping spring 611 is arranged in the clamping spring groove, ensuring that the first adjusting inner screw tube 612 is only rotatably arranged on the first mounting flange 610 and does not move back and forth, the tail part of the first adjusting rod 601 is provided with a first pointer 608, and the outer wall of the central air tube 2 is provided with a first scale 609 matched with the first pointer 608;
an axial flow air adjusting mechanism 7 is arranged in the axial flow air duct, the end part of the axial flow air duct is sealed by the end part of the coal air duct 4, the axial flow air adjusting mechanism 7 comprises a plurality of Laval nozzle-shaped through holes 710 which are uniformly formed in the end part of the coal air duct 4, a positioning pin 701 is fixed on the end surface of the inner side of the coal air duct 4, the axial flow air duct is provided with a mounting ring 703, a positioning hole matched with the positioning pin 701 is formed in the mounting ring 703, a plurality of conical adjusting columns 711 matched with the through holes 710 are further arranged on the mounting ring 703, a second adjusting rod 702 is fixedly connected to the mounting ring 703 through screws 704, the axial movement of the second adjusting rod 702 drives the mounting ring 703 to axially slide along the outer wall of the coal air duct 4, the second adjusting rod 702 extends out of the axial flow air duct 5 and is connected with a second adjusting inner screw 709 at the tail part, the second adjusting inner screw 709 is mounted on a second mounting flange 707, clamp springs 708 are respectively arranged at the two sides of the second mounting flange 707, and the second adjusting inner screw 709 is only rotatably arranged on the second mounting flange without moving forward and backward, and the second pointer 705 is matched with a second pointer 706 on the second pointer 706;
the outer wall of the central air pipe 2 is provided with a first supporting lug plate for supporting the first adjusting rod 601, the outer wall of the coal air pipe 4 is provided with a second supporting lug plate for manufacturing the second adjusting rod 702, the end parts of the central air pipe 2, the gas pipe 3, the coal air pipe 4 and the axial flow air pipe 5 are fixedly connected with nozzles, and the rotational flow air adjusting mechanism 6 and the axial flow air adjusting mechanism 7 are arranged in the corresponding nozzles.
When the cyclone air outlet angle needs to be adjusted in the operation of the burner, the first adjusting inner screw pipe 612 is rotated to drive the first adjusting rod 601 which is in threaded connection with the inner part of the first adjusting inner screw pipe to axially move, the end part of the first adjusting rod 601 slides along the inclined sliding groove 604a on the cyclone air adjusting ring 604, and as the inclined sliding groove 604a is of an inclined arrangement structure, the axial movement of the first adjusting rod 601 realizes the rotation of the cyclone air adjusting ring 604, so that the flexible shaft 605 rotates, the rotation of the flexible shaft 605 pulls the tail part of the cyclone air adjusting fan plate 607 to swing around the positioning screw 606 to drive the head end of the cyclone air adjusting fan plate 607 to swing, and finally the adjustment of the cyclone air outlet angle is realized; when the air output of the axial flow air and the wind speed are required; the second adjusting inner screw 709 is rotated to drive the second adjusting rod 702 in threaded connection with the second adjusting inner screw to axially move, and the mounting ring 703 at the end of the second adjusting rod 702 pushes the conical adjusting column 711 to extend into the through hole 710 to adjust the air outlet gap, so that the axial flow air outlet quantity and the air speed are realized.
The invention is not limited to the above embodiments, and based on the technical solution disclosed in the invention, a person skilled in the art may make some substitutions and modifications to some technical features thereof without creative effort according to the technical content disclosed, and all the substitutions and modifications are within the protection scope of the invention.
Claims (3)
1. The utility model provides a stepless regulation formula low nitrogen combustor of axle whirl, includes by inside and overcoat dress oil gun, center tuber pipe, gas pipe, coal tuber pipe and axial flue pipe of arranging, form the gas passageway between gas pipe and the center tuber pipe, be provided with whirl wind adjustment mechanism in the gas passageway, characterized by, whirl wind adjustment mechanism includes even a plurality of whirl wind adjustment fan plates of installing in the periphery of center tuber pipe, whirl wind adjustment fan plates installs in the periphery of center tuber pipe through set screw, whirl wind adjustment fan plates can wind set screw swing, the afterbody of whirl wind adjustment fan plates is connected on whirl wind adjustment ring through flexible axle, the rotatable suit of whirl wind adjustment ring is in the periphery of center tuber pipe, the afterbody of whirl wind adjustment ring is connected with the first regulation pole of control whirl wind adjustment ring rotation, whirl wind adjustment fan plates processes into T shape structure, the positioning screw passes through the middle part of the cyclone wind adjusting fan plate to mount the cyclone wind adjusting fan plate on the central air pipe, the cyclone wind adjusting ring is processed into a step structure, the front end of the cyclone wind adjusting ring is inserted into a gap between the cyclone wind adjusting fan plate and the central air pipe, the flexible shaft is vertically arranged with the axis phase of the burner, one end of the flexible shaft is fixedly connected with the tail part of the adjusting fan plate, the other end of the flexible shaft is fixedly connected with the front end of the cyclone wind adjusting ring, the tail part of the cyclone wind adjusting ring is provided with an inclined chute, a pin shaft is slidingly arranged in the inclined chute, two ends of the pin shaft are fixed on a U-shaped fork, the tail part of the U-shaped fork is fixedly connected with a first adjusting rod, the rotation of the cyclone wind adjusting ring is realized by controlling the axial movement of the first adjusting rod, the tail part of the first adjusting rod is connected with a first adjusting inner screw pipe which is mounted on a first mounting flange, the utility model provides a first regulation internal screw pipe is provided with the jump ring groove respectively in first mounting flange both sides position, be provided with the jump ring for the first axle in the jump ring groove, ensure that the first regulation internal screw pipe only rotationally set up on first mounting flange and can not the front and back drunkenness, first regulation pole afterbody is provided with first pointer, be provided with on the outer wall of center tuber pipe with first pointer complex first scale, be provided with axial-flow wind adjustment mechanism in the axial-flow tuber pipe, axial-flow wind pipe's tip seals through the tip of coal tuber pipe, axial-flow wind adjustment mechanism includes a plurality of tip laval nozzle-like through-holes of evenly seting up at the coal tuber pipe, be fixed with the locating pin on the terminal surface of coal tuber pipe inboard, axial-flow tuber pipe is provided with the collar, set up on the collar with locating pin complex locating hole, still be provided with a plurality of and on the collar the toper spliced regulation post of through-hole, still fixedly connected with second regulation pole on the collar, the axial displacement of second regulation pole drives the collar and slides along coal tuber pipe outer wall axial displacement, and the second regulation pole stretches out the setting up, and the axial-flow is connected with the second pointer is installed in the second flange on the second flange that can not install in the second flange, can's the second flange is installed respectively to the second end, can be installed with the second end of second regulation pin.
2. The shaft swirl stepless regulation type low-nitrogen burner of claim 1, wherein a first support lug plate for supporting the first regulation rod is arranged on the outer wall of the central air pipe, and a second support lug plate for manufacturing the second regulation rod is arranged on the outer wall of the coal air pipe.
3. The stepless regulation type low-nitrogen burner of shaft rotational flow according to claim 2, wherein the ends of the central air pipe, the gas pipe, the coal air pipe and the axial flow air pipe are fixedly connected with nozzles, and the rotational flow air regulating mechanism and the axial flow air regulating mechanism are arranged in the corresponding nozzles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710138253.9A CN106871116B (en) | 2017-03-09 | 2017-03-09 | Shaft rotational flow stepless regulation type low-nitrogen combustor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710138253.9A CN106871116B (en) | 2017-03-09 | 2017-03-09 | Shaft rotational flow stepless regulation type low-nitrogen combustor |
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| Publication Number | Publication Date |
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| CN106871116A CN106871116A (en) | 2017-06-20 |
| CN106871116B true CN106871116B (en) | 2023-08-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710138253.9A Active CN106871116B (en) | 2017-03-09 | 2017-03-09 | Shaft rotational flow stepless regulation type low-nitrogen combustor |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109931628B (en) * | 2019-03-27 | 2020-08-04 | 北京理工大学 | Annular cavity rotational flow opposite-spraying structure based on RDE combustion chamber |
| CN110081417B (en) * | 2019-04-11 | 2024-04-30 | 西安航天源动力工程有限公司 | Combustion head and alcohol group low-nitrogen combustion device |
| CN111828959B (en) * | 2020-07-23 | 2022-05-20 | 郑州轻工业大学 | Pulverized coal burner with adjustable shade and swirl blades |
| CN111795381B (en) * | 2020-07-23 | 2022-07-19 | 郑州轻工业大学 | Cyclone with adjustable swirl vanes for pulverized coal burner |
| CN112628728B (en) * | 2020-12-22 | 2023-05-12 | 江苏羚羊机械有限公司 | Novel rotary kiln combustor adjustable cyclone device |
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| CN101482265A (en) * | 2009-02-24 | 2009-07-15 | 上海题桥纺织染纱有限公司 | Low NOX dry ash extraction coal powder burner |
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