CN112628728B - Novel rotary kiln combustor adjustable cyclone device - Google Patents
Novel rotary kiln combustor adjustable cyclone device Download PDFInfo
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- CN112628728B CN112628728B CN202011530839.8A CN202011530839A CN112628728B CN 112628728 B CN112628728 B CN 112628728B CN 202011530839 A CN202011530839 A CN 202011530839A CN 112628728 B CN112628728 B CN 112628728B
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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
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
- F27B7/34—Arrangements of heating devices
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Abstract
The technology discloses a novel rotary kiln burner adjustable cyclone device, which comprises a spray head assembly, an extension pipe, an air plate, a telescopic pipe, a coal injection pipe, an eccentric shaft and a swinging oil cylinder; the nozzle comprises a nozzle shell, a nozzle ring, a fluted disc and a spacing ring, wherein the nozzle comprises a first round head and a second round head, the nozzle ring is circumferentially provided with a plurality of first hole site bayonets, the first round head of the nozzle can freely slide in the first hole site bayonets, the fluted disc is circumferentially provided with a plurality of second hole site bayonets, the second round head of the nozzle can freely slide in the second hole site bayonets, the spacing ring is positioned between the nozzle ring and the fluted disc, the nozzle ring, the spacing ring and the fluted disc are positioned inside the nozzle shell, the nozzle ring is connected with the nozzle shell, and the fluted disc can freely rotate inside the nozzle shell. The novel rotary kiln burner adjustable cyclone device realizes the online adjustment of the cyclone direction of cyclone wind, so that the adjustment of the cyclone wind angle is flexible, different combustion needs are adapted, the mechanism is simplified, and the rotary kiln burner adjustable cyclone device is easy to manufacture and maintain.
Description
Technical Field
The technology belongs to the field of clinker calcination equipment, in particular to a novel adjustable cyclone device of a pulverized coal burner in a cement rotary kiln, and provides a novel device which is provided with multiple air channels, multiple nozzles and can be used for adjusting cyclone angles in a linkage way.
Background
The cement rotary kiln is different from other thermal devices in that the flame shape of the pulverized coal burner has certain requirements, and the reasonable temperature distribution of each section in the kiln can be ensured only by the proper flame shape. The ideal flame shape is to keep round on any section, and the longitudinal section should be a proper fat stick shape. The flame shape can make the whole burning zone have strong and uniform heat radiation, thereby forming compact and stable kiln coating on the burning zone, improving kiln production quality, reducing heat consumption, prolonging the service life of the refractory brick of the rotary kiln, protecting the burner nozzle from being burnt out prematurely and balancing the temperature of the cylinder body.
The arrangement of each air duct of the traditional rotary kiln multi-air duct burner is basically consistent with each manufacturing factory, and the outer axial air flow, the coal air flow, the rotational flow air and the central passage/ignition passage are sequentially arranged from outside to inside (the central passage is generally not used). When the swirl intensity in the center of the jet flow increases to a certain value, a backflow area with an annular swirl shape is established in the center of the jet flow, and flame parameters such as flame stability, combustion intensity and the like depend on the size and intensity of the swirl. When the swirl intensity is increased, the attenuation of each velocity component of the jet beam along the axis direction is increased, the range is shortened, the diffusion angle is increased, the corresponding flame shape is thick and short, and conversely, the flame shape is slender.
In order to adjust the angle of the swirling wind, a swirler is generally arranged in the swirling wind channel, however, the traditional swirler is a semicircular spiral groove channel with a certain angle with the axis, and the spiral groove is fixed after the burner is manufactured into a finished product and cannot be adjusted according to the requirement. In fact, in the using process of the burner, due to different fuels and the change of combustion values, the swirler for controlling the direction of swirl wind is required to make corresponding angle adjustment in order to ensure that the flame of the burner can be in an optimal combustion state.
For the above reasons, the rotary kiln multi-channel burner needs to be improved, and a swirl device with adjustable flame shape of the burner needs to be designed to simplify the flame shape adjusting process and expand the adjusting range, so that the flame adjustment is more diversified, and the rotary kiln multi-channel burner is suitable for different working conditions, the long flame can be adjusted to be longer, the short flame can be adjusted to be shorter, and the thickness, angle and quadrant of the flame can be adjusted freely.
Disclosure of Invention
The technical problem to be solved by the technology is to provide a novel rotary kiln burner adjustable cyclone device aiming at the defects of the prior art, the novel rotary kiln burner adjustable cyclone device realizes the on-line adjustable cyclone direction of cyclone wind, so that the adjustment of the angle of the cyclone wind is flexible, different combustion needs are met, the mechanism is simplified, and the rotary kiln burner adjustable cyclone device is easy to manufacture and maintain.
In order to achieve the technical purpose, the technical scheme adopted by the technology is as follows:
the utility model provides a novel adjustable whirl of rotary kiln combustor device, includes adjustable whirl device, adjustable whirl device includes:
the device comprises a spray head assembly, an extension pipe, an air plate, an extension pipe, a coal injection pipe, an eccentric shaft and a swing type oil cylinder;
the spray head assembly comprises a spray head shell, a plurality of spray nozzles, a nozzle ring, a fluted disc and a spacing ring, wherein the spray nozzles are in a calabash shape and comprise a first round head and a second round head, a rotational flow air flue is arranged in the center of each spray nozzle, the nozzle ring is circumferentially provided with a plurality of first hole site bayonets, the first round head of each spray nozzle is embedded in each first hole site bay and can freely slide in each first hole site bay, the fluted disc is circumferentially provided with a plurality of second hole site bayonets, the second round head of each spray nozzle is embedded in each second hole site bay and can freely slide in each second hole site bay, the spacing ring is positioned between the nozzle ring and the fluted disc, the inner ring of the spacing ring is in sliding contact with the outer wall of each spray nozzle, the nozzle ring, the spacing ring and the fluted disc are all positioned in the spray head shell, the nozzle ring is connected with the spray head shell, and the fluted disc can freely rotate in the spray head shell;
the tail part of the spray head shell is fixedly connected with the front part of the coal injection pipe; the front part of the extension pipe is positioned in the nozzle ring and the inner ring of the fluted disc, the extension pipe can freely move in a spiral manner in the nozzle ring, the outer ring of the front part of the extension pipe is fixedly connected with a flat key, the inner ring of the fluted disc is provided with a through hole key slot, the flat key is embedded in the through hole key slot, and the flat key can move back and forth in the through hole key slot;
the tail end of the extension pipe is fixedly connected with the inner ring of the air plate, the outer ring of the air plate is connected with the tail end of the telescopic pipe, a plurality of air duct ports are formed in the circumferential direction of the air plate, the extension pipe and the telescopic pipe are both positioned in the coal injection pipe, and the extension pipe and the telescopic pipe can freely move in a spiral mode in the coal injection pipe;
the tail part of the eccentric shaft is connected with the first sleeve through a bearing, and the tail part of the eccentric shaft is connected with a driving shaft of the oscillating oil cylinder;
the swing type oil cylinder is used for driving the telescopic pipe and the extension pipe to move in a spiral mode through the eccentric shaft, the extension pipe is used for driving the fluted disc to rotate through the flat key, and the fluted disc is used for driving the nozzle to swing through the bayonet of the second hole site.
As a further improvement of the present technology, the size of the first rounded head is larger than the size of the second rounded head.
As the technical scheme of this technique further improvement, nozzle ring circumference evenly distributed has a plurality of first hole site bayonet socket, fluted disc circumference evenly distributed has a plurality of second hole site bayonet socket, the circumference outward circle evenly distributed of fluted disc has a plurality of bosss, two through-hole keyways have been seted up to the inner circle of fluted disc.
As a further improved technical scheme of the technology, the outer wall of the nozzle ring is connected with the inner wall of the spray head shell through cylindrical positioning pins uniformly distributed in the circumferential direction.
As a further improved technical scheme of the technology, a plurality of air duct openings are uniformly distributed in the circumferential direction of the air deflector.
As a further improved technical scheme of the technology, the tail end of the spray head shell is fixedly connected with the front end of the coal injection pipe in a welding mode; the outer ring at the front part of the extension pipe is fixedly connected with two flat keys in a welding mode; the outer ring of the tail end of the extension pipe is fixedly connected with the inner ring of the air plate in a welding mode; the outer ring of the air plate is fixedly connected with the inner ring at the front end of the telescopic pipe in a welding mode; the telescopic pipe is characterized in that one side of the tail of the telescopic pipe is fixedly connected with a first sleeve through a welding mode, the tail end of the first sleeve is sealed through a cover plate, the outer ring of the tail of the coal injection pipe is fixedly connected with a second sleeve through a welding mode, and the front of the second sleeve is fixedly connected with a swinging oil cylinder through a bolt.
As a further improved technical scheme of the technology, a plurality of stop blocks are uniformly and fixedly connected with the periphery of the outer ring of the telescopic tube; the inner ring of the tail part of the coal injection pipe is fixedly connected with a guide ring, a guide groove is formed in the guide ring, a wear-resistant guide bar is embedded in the guide groove, lubricating oil is smeared on the inner ring of the wear-resistant guide bar, and the tail part of the telescopic pipe is positioned on the inner side of the wear-resistant guide bar.
As a further improved technical scheme of the technology, the telescopic pipe is fixedly connected with the stop block in a welding mode, and the coal injection pipe is fixedly connected with the guide ring in a welding mode.
As a further improved technical scheme of the technology, the bearing is a radial spherical plain bearing, the tail part of the eccentric shaft is provided with a double key groove which is in matched connection with a flat key on a driving shaft of the swinging oil cylinder, the bottom of the swinging oil cylinder is provided with an oil inlet pipe interface and an oil outlet pipe interface, wherein the oil inlet pipe interface is connected with an oil pump electric cabinet through an oil inlet pipe, and the oil outlet pipe interface is connected with the oil pump electric cabinet through an oil outlet pipe.
As a further improved technical scheme of the technology, an outer axial flow device is arranged outside the adjustable cyclone device, an outer axial flow air duct is arranged on the outer axial flow device, a flame holding cover is arranged at the front end of an outer ring of the outer axial flow air duct, and an air outlet of the outer axial flow air duct is provided with a plurality of semicircular nozzle openings with taper.
The principle of the technology is that when the rotational flow angle needs to be regulated, an instruction is given only through an oil pump electric cabinet, the rotating angle and the rotating direction of a driving shaft can be set in advance, the oil inlet and the oil outlet are controlled by the oil pump electric cabinet to apply torque to a swinging type oil cylinder driving shaft, an eccentric shaft is driven to synchronously, homodromously and equiangularly rotate, a centripetal joint bearing on the eccentric shaft is utilized to drive a telescopic pipe to do spiral motion (rotate and move back and forth), a fluted disc is driven to synchronously, homodromously and equiangularly rotate through a flat key on the upper head part of an extension pipe, the fluted disc drives a nozzle to radially swing, the aim of regulating the angles of multiple nozzles in one-step linkage is achieved, and high-speed airflow flows along with the axial direction of the nozzle, so that the airflow direction of the burner is changed, and the airflow direction sprayed out of the burner is changed.
The beneficial effects of the technology are as follows:
(1) Compared with the prior art, the technology can realize the random adjustment of the swirl angle of the burner in a certain angle, form a unique outlet jet flow, strengthen the mixing of pulverized coal airflow and secondary hot air, furthest eliminate incomplete combustion, reduce unnecessary heat loss, and have a unique adjusting mechanism, thereby having a flexible and rapid flame adjusting means, enabling the flame shape to meet the requirements of the working condition in the kiln at any time, being beneficial to establishing a reasonable calcination system and improving the product quality, and having a detachable structure, simple structure, easy manufacture and maintenance and convenient replacement; meanwhile, due to the design of the conical nozzle opening of the outer axial flow air duct and the assistance of the flame holding cover, wind resistance is reduced, energy loss caused by wind resistance is reduced, and environmental protection is facilitated.
(2) The baffle blocks are uniformly distributed and welded at intervals on the outer ring of the middle part of the telescopic pipe in the circumferential direction and are used for supporting and guiding the telescopic pipe in the coal injection pipe. In addition, lubricating oil is smeared on the inner side of the wear-resistant guide bar, so that the wear-resistant guide bar can adapt to the severe working condition of a coal mill powder concentrator, and the flexible rotation of the telescopic tube is ensured to be free from clamping stagnation. The technology can effectively eliminate the phenomenon of hysteresis caused by manufacturing errors and/or assembly errors, and has higher adjustment accuracy.
Drawings
FIG. 1 is a schematic diagram of a burner duct structure of a rotary kiln in accordance with the present technology.
Fig. 2 is a schematic diagram of an external axial flow duct of the present technology.
Fig. 3 is a schematic structural view of an adjustable cyclone device in the prior art.
FIG. 4 is a schematic structural view of a spray head assembly of an adjustable swirling device according to the present technology
FIG. 5 is a schematic diagram of a toothed disc of an adjustable swirling device according to the present technique
Fig. 6 is a schematic diagram of the front end face structure of the telescopic tube of the adjustable cyclone device in the prior art.
Fig. 7 is a cross-sectional view A-A of fig. 6.
FIG. 8 is a schematic view of a nozzle of the adjustable swirling device of the present technology at a minimum rotation.
Fig. 9 is a sectional view of B-B in fig. 8.
Fig. 10 is a cross-sectional view of fig. 9C-C.
Fig. 11 is a schematic view of the structure of the nozzle of the adjustable swirling device in the prior art at the maximum rotation degree (right-hand rotation as an example).
Fig. 12 is a sectional view D-D of fig. 11.
Fig. 13 is a sectional view of E-E of fig. 12.
Detailed Description
The following further describes specific embodiments of the present technology with reference to the accompanying drawings:
referring to fig. 1, the arrangement of each air duct of the rotary kiln burner is that an outer axial air duct, a pulverized coal air duct (primary air), a rotational flow air duct (secondary high-temperature air) and a central passage/ignition passage are sequentially arranged from outside to inside (the central passage is generally not used). The internal wind is rotational wind, so that the flame is shortened and thickened; the external wind is axial flow wind, so that the flame is thinned and lengthened. Through the reasonable matching of the three main channels, the larger negative pressure entrainment region at the head of the coal injection pipe can be realized, the mixing of coal dust and high-temperature secondary air is enhanced, and the combustion efficiency is improved.
Referring to fig. 2, an outer axial flow duct 11 is provided on the outer axial flow device, and a flame holding cover 12 is added at the front end of the outer ring of the outer axial flow duct 11 in this embodiment to reduce the diffusion of flame and wrap the flame shape. In addition, the air outlet of the outer axial flow air duct 11 is arranged into a plurality of semicircular tapered nozzle forms, so that the wind resistance is reduced, the jet flow strength is improved, and the effects of stable combustion and flame protection can be realized. In order to reduce wind resistance, the conventional burner is usually designed to reduce wind resistance and wrap up swirl flames by increasing the intensity of primary coal wind and secondary high-temperature wind, so that waste is caused by low resource utilization rate, and the embodiment is also designed with a conical nozzle opening of the axial flow air duct 11 and is assisted by the flame gathering cover 12.
The novel adjustable swirling device of the rotary kiln burner shown in the figures 3-7 comprises a spray head shell 1.1, a nozzle ring 1.3, a plurality of nozzles 1.2, a fluted disc 1.4, a spacing ring 1.5, an extension pipe 2.1 (also a telescopic pipe), a telescopic pipe 2.3, a coal injection pipe 3.1, a guide ring 3.3, an eccentric shaft 4, a bearing 8, a swinging oil cylinder 5, an electric cabinet 7 and the like.
Front section of adjusting mechanism: referring to fig. 3-5, the spray head housing 1.1, the nozzle ring 1.3, the plurality of nozzles 1.2, the fluted disc 1.4 and the spacer ring 1.5 form a spray head assembly, the nozzle 1.2 adopts a design of big and small round heads, is similar to a gourd shape, and comprises a first round head and a second round head, wherein the first round head is a big round head, and the second round head is a small round head. The center of the nozzle 1.2 is provided with a rotational flow air channel, a plurality of first hole site bayonets which are uniformly distributed are circumferentially arranged on the nozzle ring 1.3, and a first round head of the nozzle 1.2 is embedded in the first hole site bayonets and can freely slide in the first hole site bayonets. The circumferential outer ring of the fluted disc 1.4 is provided with a plurality of evenly distributed bosses which are used for supporting and guiding the fluted disc 1.4 in the spray head shell 1.1. The fluted disc 1.4 circumference is provided with a plurality of second hole site bayonet sockets of equipartition, and the second button head of nozzle 1.2 imbeds in second hole site bayonet socket and second button head can freely slide in second hole site bayonet socket. The fluted disc 1.4 inner circle is provided with two keyway (i.e. two through-hole keyway), and flexible pipe 2.3 head has welded one section extension pipe 2.1, and its outer circle welding has two flat keys 2.4, and flat key 2.4 imbeds in the through-hole keyway and flat key 2.4 can reciprocate in the through-hole keyway, and flat key 2.4 and through-hole keyway cooperation still can realize fluted disc 1.4 and rotate in shower nozzle casing 1.1 in step. The front part of the extension tube 2.1 is located inside the inner ring of the nozzle ring 1.3 and the toothed disc 1.4, and the extension tube 2.1 can freely spiral inside the nozzle ring 1.3. The spacer ring 1.5 is positioned between the nozzle ring 1.3 and the fluted disc 1.4, the inner ring of the spacer ring 1.5 is in sliding contact with the outer wall of the nozzle 1.2, gaps are reserved between the spacer ring 1.5 and the nozzle ring 1.3 and between the spacer ring 1.4 and the fluted disc 1.4, the nozzle ring 1.3, the spacer ring 1.5 and the fluted disc 1.4 are positioned inside the spray head shell 1.1, the outer wall of the nozzle ring 1.3 is connected with the inner wall of the spray head shell 1.1 through cylindrical positioning pins 1.6 uniformly distributed in the circumferential direction, and the fluted disc 1.4 can freely rotate inside the spray head shell 1.1. The tail part of the spray head shell 1.1 is fixedly connected with the front part of the coal injection pipe 3.1 in a welding mode.
The rear section of the adjusting mechanism: referring to fig. 6 and 7, the tail end of the extension pipe 2.1 is fixedly connected with the inner ring of the air plate 2.2 in a welding manner, the outer ring of the air plate 2.2 is connected with the tail end of the telescopic pipe 2.3 in a welding manner, a plurality of air ports are uniformly distributed in the circumferential direction of the air plate 2.2, and the extension pipe 2.1 and the telescopic pipe 2.3 are both positioned in the coal injection pipe 3.1 and can move freely in a spiral manner in the coal injection pipe 3.1. And the outer ring of the middle part of the telescopic pipe 2.3 is uniformly provided with a welding stop block 2.6 in the circumferential direction at intervals for supporting and guiding the telescopic pipe 2.3 in the coal injection pipe 3.1. The inner ring at the tail of the coal injection pipe 3.1 is fixedly connected with a guide ring 3.3 in a welding mode, a guide groove is arranged in the guide ring 3.3, the guide groove is used for installing a wear-resistant guide bar 10 made of wear-resistant materials, lubricating oil is smeared on the inner side of the wear-resistant guide bar 10, a section area at the tail of the telescopic pipe 2.3 is finished by adopting a machining excircle mode, and spiral movement (rotation and forward and backward movement) of the telescopic pipe 2.3 is realized.
A driving mechanism: referring to fig. 3, 6 and 7, a first sleeve 2.5 is welded on one side of the tail of the telescopic tube 2.3 and is used for installing a bearing 8 (a radial spherical plain bearing is adopted, GE60UK-2 RS), the tail of the first sleeve 2.5 is sealed by a cover plate, the head of the eccentric shaft 4 is provided with the bearing 8 (the radial spherical plain bearing is adopted) and is fixed by a shaft retainer 9, and a double key groove is arranged in the tail shaft of the eccentric shaft 4 and is matched with a driving shaft flat key of the swinging oil cylinder 5. The end face of the tail of the swing type oil cylinder 5 is provided with a pointer and a dial, and the rotating angle of the eccentric shaft 4 in the pipe can be clearly known through the dial. The head of the coal injection pipe 3.1 is connected with the spray head shell 1.1, a second sleeve pipe 3.2 is welded at a corresponding position of the outer ring of the tail part, and the second sleeve pipe 3.2 is used for fixing the swing type oil cylinder 5 through bolts. The bottom of the swing type oil cylinder 5 is provided with an oil inlet pipe interface and an oil outlet pipe interface, which are respectively connected with an electric cabinet 7 through an oil inlet pipe and an oil outlet pipe (namely a hydraulic pipeline 6), and the electric cabinet 7 is an oil pump electric cabinet.
The oscillating cylinder 5 of this embodiment drives the telescopic tube 2.3 and the extension tube 2.1 to do spiral motion (i.e. rotate and move back and forth) through the eccentric shaft 4, the extension tube 2.1 drives the fluted disc 1.4 to rotate (the fluted disc 1.4 does not move back and forth and only rotates) through the flat key 2.4, the fluted disc 1.4 rotates, and the nozzle ring 1.3 does not rotate, so the fluted disc 1.4 drives the nozzle 1.2 to oscillate (i.e. the nozzle 1.2 oscillates in the fluted disc 1.4 and the nozzle ring 1.3), thereby forming a variation of the nozzle air duct.
Assuming that the eccentric distance of the eccentric shaft 4 is X, the rotation angle of the eccentric shaft 4 is a degrees (0-45 degrees), the diameter of the outer circle of the telescopic tube 2.3 is Q, the rotation angle of the telescopic tube 2.3 is b degrees, the axial displacement of the telescopic tube 2.3 is Y, the radial displacement of the telescopic tube 2.3 is Z, and the formula is as follows:
Y=Xcos(a°)，Z=Xsin(a°) =Q/2tan(b°)；
the maximum angle of the left and right swing of the nozzle 1.2 is usually designed to be 10 °, and the direction of the left and right swing of the nozzle 1.2 depends on the direction of the rotary kiln, in this embodiment, the rotary kiln is right-handed, the direction of the nozzle 1.2 will also be designed to be right-handed, i.e. the fluted disc 1.4 drives the small round head of the nozzle 1.2 to swing leftwards, the telescopic tube 2.3 rotates anticlockwise, and the maximum angle of the swing of the nozzle 1.2 is equal to the rotation angle b=5° of the telescopic tube 2.3.
In this embodiment, the number of nozzles 1.2 is 10, when the nozzles 1.2 swing from the center to the maximum position, a right cyclone is formed, the eccentric shaft 4 rotates by 90 ° (i.e. from 225 ° to 135 °), the telescopic tube 2.3 rotates by 10 ° (i.e. from-5 ° to 5 °), and at the same time, the telescopic tube 2.3 and the extension tube 2.1 axially displace from the retracted position (X-Y) to the end surface flush position (x=y) to the retracted position (X-Y).
Referring to fig. 8, 9 and 10, when the eccentric shaft 4 is located at the maximum eccentric distance (i.e. 180 °) and the extension tube 2.1 is flush with the front end of the nozzle head 1.2 (x=y), when the eccentric shaft 4 rotates to the third quadrant (i.e. 225 °), the extension tube 2.3 rotates clockwise by 5 ° and the front end of the extension tube 2.3 retracts by a distance (X-Y), the nozzle opening of the nozzle 1.2 is located at the minimum position of rotation, and the angle of the ejected wind is the minimum, so that a direct current wind is formed and long fine flame is ejected.
Referring to fig. 11, 12 and 13, when the eccentric shaft 4 is located at the maximum eccentric distance (i.e. 180 °) and the extension tube 2.1 is flush with the front end of the nozzle head 1.2 (x=y), when the eccentric shaft 4 rotates to the second quadrant (i.e. 135 °), the extension tube 2.3 rotates 5 ° counterclockwise, the front end of the extension tube 2.3 retracts by a distance (X-Y), the nozzle opening of the nozzle 1.2 is located at the maximum position of rotation, the ejection angle is the maximum, a swirl flow (in this example, a right cyclone) is formed, and the short and coarse flame is ejected.
The rotational flow linkage adjusting device can conveniently adjust the angle of the nozzle in one linkage, effectively avoids the phenomenon of stagnation when adjusting the angle of the nozzle, and has better angle consistency of the guide vane after adjustment.
The scope of the present technology includes, but is not limited to, the above embodiments, and any alterations, modifications, and improvements made to the technology that are easily conceivable to those skilled in the art are within the scope of the present technology.
Claims (10)
1. The utility model provides a novel adjustable whirl of rotary kiln combustor device which characterized in that: including adjustable whirl device, adjustable whirl device includes:
the device comprises a spray head assembly, an extension pipe (2.1), an air plate (2.2), a telescopic pipe (2.3), a coal injection pipe (3.1), an eccentric shaft (4) and a swing type oil cylinder (5);
the spray head assembly comprises a spray head shell (1.1), a plurality of spray nozzles (1.2), a spray nozzle ring (1.3), a fluted disc (1.4) and a spacing ring (1.5), wherein the spray nozzle (1.2) is in a calabash shape and comprises a first round head and a second round head, a swirl air duct is arranged in the center of the spray nozzle (1.2), the spray nozzle ring (1.3) is circumferentially provided with a plurality of first hole site bayonets, the first round head of the spray nozzle (1.2) is embedded in the first hole site bayonets and can freely slide in the first hole site bayonets, the fluted disc (1.4) is circumferentially provided with a plurality of second hole site bayonets, the second round head of the spray nozzle (1.2) is embedded in the second hole site bayonets and can freely slide in the second hole site bayonets, the spacing ring (1.5) is positioned between the spray nozzle ring (1.3) and the fluted disc (1.4), the inner ring of the spacing ring (1.5) is in sliding contact with the outer wall of the spray nozzle (1.2), and the spray nozzle ring (1.3) is in the shell (1.4), and the spray nozzle ring (1.4) is in the spacing ring (1.1.2);
the tail part of the spray head shell (1.1) is fixedly connected with the front part of the coal injection pipe (3.1); the front part of the extension pipe (2.1) is positioned inside a nozzle ring (1.3) and an inner ring of a fluted disc (1.4), the extension pipe (2.1) can freely move in a spiral mode inside the nozzle ring (1.3), a flat key (2.4) is fixedly connected with an outer ring at the front part of the extension pipe (2.1), a through-hole key slot is formed in the inner ring of the fluted disc (1.4), the flat key (2.4) is embedded in the through-hole key slot, and the flat key (2.4) can move back and forth in the through-hole key slot;
the tail end of the extension pipe (2.1) is fixedly connected with the inner ring of the air plate (2.2), the outer ring of the air plate (2.2) is connected with the tail end of the telescopic pipe (2.3), a plurality of air ports are circumferentially arranged on the air plate (2.2), the extension pipe (2.1) and the telescopic pipe (2.3) are both positioned in the coal injection pipe (3.1), and the extension pipe (2.1) and the telescopic pipe (2.3) can freely move in a spiral mode in the coal injection pipe (3.1);
the tail part of the telescopic pipe (2.3) is fixedly connected with a first sleeve (2.5), the tail end of the first sleeve (2.5) is sealed, the outer ring of the tail part of the coal injection pipe (3.1) is fixedly connected with a second sleeve (3.2), the front part of the second sleeve (3.2) is fixedly connected with a swinging oil cylinder (5), the head part of the eccentric shaft (4) is connected with the first sleeve (2.5) through a bearing (8), and the tail part of the eccentric shaft (4) is connected with a driving shaft of the swinging oil cylinder (5);
the swing type oil cylinder (5) is used for driving the telescopic pipe (2.3) and the extension pipe (2.1) to move in a spiral mode through the eccentric shaft (4), the extension pipe (2.1) is used for driving the fluted disc (1.4) to rotate through the flat key (2.4), and the fluted disc (1.4) is used for driving the nozzle (1.2) to swing through the second hole site bayonet.
2. The novel rotary kiln burner adjustable swirling device according to claim 1, wherein: the first rounded head has a size greater than the second rounded head.
3. The novel rotary kiln burner adjustable swirling device according to claim 1, wherein: the nozzle ring (1.3) circumference evenly distributed has a plurality of first hole site bayonet sockets, fluted disc (1.4) circumference evenly distributed has a plurality of second hole site bayonet sockets, the circumference outward circle evenly distributed of fluted disc (1.4) has a plurality of bosss, two through-hole keyways have been seted up to the inner circle of fluted disc (1.4).
4. The novel rotary kiln burner adjustable swirling device according to claim 1, wherein: the outer wall of the nozzle ring (1.3) is connected with the inner wall of the nozzle shell (1.1) through cylindrical positioning pins (1.6) uniformly distributed in the circumferential direction.
5. The novel rotary kiln burner adjustable swirling device according to claim 1, wherein: a plurality of air ports are uniformly distributed on the periphery of the air plate (2.2).
6. The novel rotary kiln burner adjustable swirling device according to claim 1, wherein: the tail end of the spray head shell (1.1) is fixedly connected with the front end of the coal injection pipe (3.1) in a welding mode; the outer ring at the front part of the extension pipe (2.1) is fixedly connected with two flat keys (2.4) in a welding mode; the outer ring of the tail end of the extension pipe (2.1) is fixedly connected with the inner ring of the air plate (2.2) in a welding mode; the outer ring of the air plate (2.2) is fixedly connected with the inner ring at the front end of the telescopic pipe (2.3) in a welding mode; the telescopic pipe is characterized in that one side of the tail of the telescopic pipe (2.3) is fixedly connected with a first sleeve (2.5) in a welding mode, the tail end of the first sleeve (2.5) is sealed by a cover plate, the outer ring of the tail of the coal injection pipe (3.1) is fixedly connected with a second sleeve (3.2) in a welding mode, and the front of the second sleeve (3.2) is fixedly connected with a swinging oil cylinder (5) through a bolt.
7. The novel rotary kiln burner adjustable swirling device according to claim 1, wherein: a plurality of stop blocks (2.6) are uniformly and fixedly connected to the circumference of the outer ring of the telescopic pipe (2.3); the coal injection pipe is characterized in that a guide ring (3.3) is fixedly connected to the inner ring of the tail of the coal injection pipe (3.1), a guide groove is formed in the guide ring (3.3), a wear-resistant guide bar (10) is embedded in the guide groove, lubricating oil is smeared on the inner ring of the wear-resistant guide bar (10), and the tail of the telescopic pipe (2.3) is located on the inner side of the wear-resistant guide bar (10).
8. The novel rotary kiln burner adjustable swirling device according to claim 7, wherein: the telescopic pipe (2.3) is fixedly connected with the stop block (2.6) in a welding mode, and the coal injection pipe (3.1) is fixedly connected with the guide ring (3.3) in a welding mode.
9. The novel rotary kiln burner adjustable swirling device according to claim 1, wherein: the bearing (8) is a radial spherical plain bearing, the tail part of the eccentric shaft (4) is provided with double key grooves which are connected with a flat key on a driving shaft of the swinging oil cylinder (5) in a matched mode, the bottom of the swinging oil cylinder (5) is provided with an oil inlet pipe interface and an oil outlet pipe interface, the oil inlet pipe interface is connected with an oil pump electric cabinet through an oil inlet pipe, and the oil outlet pipe interface is connected with the oil pump electric cabinet through an oil outlet pipe.
10. The novel rotary kiln burner adjustable swirling device according to claim 1, wherein: the outer axial flow device is arranged outside the adjustable cyclone device, the outer axial flow device is provided with an outer axial flow air duct (11), the front end of the outer ring of the outer axial flow air duct (11) is provided with a flame collecting cover (12), and the air outlet of the outer axial flow air duct (11) is provided with a plurality of semicircular tapered nozzle openings.
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| CN202011530839.8A CN112628728B (en) | 2020-12-22 | 2020-12-22 | Novel rotary kiln combustor adjustable cyclone device |
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| CN202011530839.8A CN112628728B (en) | 2020-12-22 | 2020-12-22 | Novel rotary kiln combustor adjustable cyclone device |
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| CN113464933A (en) * | 2021-07-02 | 2021-10-01 | 合肥水泥研究设计院有限公司 | Swirler with gradually changed spiral angle |
| CN115031230B (en) * | 2022-06-09 | 2023-03-24 | 安徽锐星节能科技有限公司 | Omnibearing kiln tail coal sprayer of combustor, use method and combustor |
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| CN2529083Y (en) * | 2002-04-02 | 2003-01-01 | 王姝森 | Rotary kiln five-duct coal burner |
| CN2577124Y (en) * | 2002-11-10 | 2003-10-01 | 王姝森 | Bispin five-duct fine coal burner for rotary furnace |
| AT507901B1 (en) * | 2009-05-19 | 2010-09-15 | Unitherm Cemcon Feuerungsanlag | DRAL ADJUSTMENT DEVICE FOR A BURNER |
| EP2597367A4 (en) * | 2011-05-27 | 2014-10-29 | Shanghai Boiler Works Ltd | Dense-phase swirl pulverized coal burner |
| CN103134051B (en) * | 2011-11-26 | 2014-05-14 | 牛博申 | Swing type boiler combustor for wall-type hedging pulverized coal boiler |
| CN206504326U (en) * | 2017-02-23 | 2017-09-19 | 河南汇金智能装备有限公司 | Air channel in combustor nozzle coal dust |
| CN211450910U (en) * | 2019-12-30 | 2020-09-08 | 河南汇金智能装备有限公司 | Kiln tail combustor |
| CN111023099A (en) * | 2020-01-09 | 2020-04-17 | 金华愉悦机械科技有限公司 | Angle-adjustable burner capable of using various fuels |
| CN214064902U (en) * | 2020-12-22 | 2021-08-27 | 江苏羚羊机械有限公司 | Novel adjustable cyclone device of rotary kiln combustor |
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| DE19648981A1 (en) * | 1996-11-26 | 1998-05-28 | Krupp Polysius Ag | Burner for combustion chamber of industrial furnace |
| DE10039152A1 (en) * | 2000-08-06 | 2002-02-14 | Webasto Thermosysteme Gmbh | atomizer burner |
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