CN215637128U - Nozzle for boiler coal mill equipment - Google Patents
Nozzle for boiler coal mill equipment Download PDFInfo
- Publication number
- CN215637128U CN215637128U CN202121946074.6U CN202121946074U CN215637128U CN 215637128 U CN215637128 U CN 215637128U CN 202121946074 U CN202121946074 U CN 202121946074U CN 215637128 U CN215637128 U CN 215637128U
- Authority
- CN
- China
- Prior art keywords
- nozzle
- blunt
- plate
- nozzle body
- outer spacer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model discloses a nozzle for boiler coal mill equipment, which comprises a nozzle body and an outer spacer bush, wherein the outer side wall of the nozzle body is fixedly connected with the inner side wall of the outer spacer bush through a plurality of connecting plates, a blunt body plate I and a blunt body plate II are sequentially arranged inside the nozzle body, the blunt body plate I and the blunt body plate II are fixedly connected with the nozzle body through a plurality of connecting columns, a feeding hole is formed in one end of the nozzle body and one end of the outer spacer bush, and a discharging hole is formed in the other end of the nozzle body and the other end of the outer spacer bush. Has the advantages that: the problems of thermal deformation and burning loss of the burner nozzle and falling of the blunt body plate are solved, the uniform injection of materials can be realized, the combustion efficiency is improved, the energy conservation and emission reduction are realized, the service life of the burner nozzle is greatly prolonged, the overhaul time and cost are saved for owners, and the efficiency is improved.
Description
Technical Field
The utility model relates to the technical field of burner nozzles, in particular to a nozzle for boiler coal mill equipment.
Background
The pulverized coal produced by grinding rotates along with the grinding roller and is thrown above the air ring under the action of centrifugal force and the pushing action of the continuously ground coal and pulverized coal. Hot primary air enters an annular drying space at a certain air speed to dry the pulverized coal after being rectified by an air ring of the impeller device, and is carried into the upper part of the coal mill to enter a rotary separator. Unqualified coarse coal powder is separated in the separator, returned to the grinding area for re-grinding, and qualified coal powder is taken out of the mill by the hot primary air through the separator, enters the hot primary air pipe, and directly enters the hearth through the combustor to participate in combustion.
The pulverized coal burner is an important part of boiler equipment, and the burning loss of the burner has great influence on the combustion condition in the boiler, so that the control is particularly important. When the thermal deformation burning loss condition of the burner nozzle occurs, the deflection of the flame center is most commonly caused, so the consequences of high-temperature corrosion and water wall coking are brought, the safe operation of the boiler and the economic loss are greatly influenced, the workload of maintenance is greatly increased, and effective prevention and control measures are required to be taken to deal with the problem.
Most commonly, the falling of the burner blunt plate enters a slag discharge system, and under the condition that the operation time of the unit is continuously increased, the center of the combustion flame of the boiler begins to deviate, the temperature of main steam and re-steam on the left side and the right side of the boiler also deviates, and the temperature of inlet flue gas of an air preheater also deviates. These conditions are closely related to the burning of the burner and the falling of the blunt plate. The materials are selected according to the regional temperature of the combustor in design, the heat resistance and the wear resistance are increased, the cross section area of the peripheral wind nozzle of the combustor is reasonably designed, and the blunt body plate structure design of the combustor is optimized. The structural design and the material selection of the burner nozzle are unreasonable, and when the burner nozzle is subjected to thermal deformation and burning loss, the center of flame is most commonly deflected, so that high-temperature corrosion and water-cooled wall coking are caused.
An effective solution to the problems in the related art has not been proposed yet.
SUMMERY OF THE UTILITY MODEL
In view of the problems in the related art, the present invention is directed to a nozzle for a coal mill installation of a boiler to overcome the above-mentioned problems in the related art.
Therefore, the utility model adopts the following specific technical scheme:
the utility model provides a nozzle for boiler coal pulverizer equipment, includes nozzle body and outer spacer, the lateral wall of nozzle body with through a plurality of connecting plate fixed connection between the inside wall of outer spacer, the inside of nozzle body has set gradually blunt body board one and blunt body board two, blunt body board one with blunt body board two with through a plurality of spliced pole fixed connection between the nozzle body, the nozzle body with the one end of outer spacer is provided with the feed inlet, the nozzle body with the other end of outer spacer is provided with the discharge gate.
Furthermore, the middle positions of the two sides of the outer spacer sleeve are provided with grooves, and the grooves are of inverted trapezoidal structures.
Furthermore, a plurality of hoisting holes are formed in the middle of the nozzle body, close to the two sides of the groove.
Further, a buffer cavity is formed between the nozzle body and the outer spacer bush, and the connecting plate is located inside the buffer cavity.
Further, blunt body board one with blunt body board two is parallel structure, blunt body board one with blunt body board two comprises the mainboard body and arc ejection of compact section, arc ejection of compact section fixed connection in the one end of mainboard body.
Furthermore, the deflector groove has all been seted up to the mainboard body with the both sides of arc ejection of compact section and the inside wall of nozzle body.
Further, the nozzle body, the outer spacer bush, the blunt body plate I, the blunt body plate II, the connecting plate and the connecting column are all made of tungsten-cobalt alloy.
Furthermore, the connecting plate with the nozzle body with between the outer spacer, the spliced pole with blunt body board one, blunt body board two with be welded connection structure between the nozzle body.
The utility model has the beneficial effects that: through setting up the nozzle that is used for boiler coal pulverizer equipment by nozzle body, outer spacer sleeve, connecting plate, blunt body board one, blunt body board two, spliced pole, feed inlet, discharge gate constitute to solved burner nozzle heat altered shape scaling loss, blunt body board drops the problem, can realize the even injection of material, improved combustion efficiency, both played energy saving and emission reduction, make burner nozzle life-span increase substantially again, saved maintenance time and cost for the owner, raise the efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural view of a nozzle for a coal pulverizer apparatus for a boiler in accordance with an embodiment of the present invention;
FIG. 2 is a schematic illustration of a bluff body plate configuration for a nozzle of a boiler mill apparatus according to an embodiment of the present disclosure;
FIG. 3 is a side view of a nozzle for a boiler mill apparatus according to an embodiment of the present invention.
In the figure:
1. a nozzle body; 2. an outer spacer sleeve; 3. a connecting plate; 4. a blunt plate I; 5. a blunt plate II; 6. connecting columns; 7. a feed inlet; 8. a discharge port; 9. grooving; 10. hoisting holes; 11. a buffer chamber; 12. a main board body; 13. an arc discharge section; 14. and a diversion trench.
Detailed Description
For further explanation of the various embodiments, the drawings which form a part of the disclosure and which are incorporated in and constitute a part of this specification, illustrate embodiments and, together with the description, serve to explain the principles of operation of the embodiments, and to enable others of ordinary skill in the art to understand the various embodiments and advantages of the utility model, and, by reference to these figures, reference is made to the accompanying drawings, which are not to scale and wherein like reference numerals generally refer to like elements.
According to an embodiment of the present invention, a nozzle for a boiler coal mill apparatus is provided.
The first embodiment is as follows:
as shown in fig. 1 to 3, the nozzle for a boiler coal mill device according to the embodiment of the utility model comprises a nozzle body 1 and an outer spacer 2, wherein the outer side wall of the nozzle body 1 is fixedly connected with the inner side wall of the outer spacer 2 through a plurality of connecting plates 3, a blunt body plate 1 and a blunt body plate 5 are sequentially arranged inside the nozzle body 1, the blunt body plate 4 and the blunt body plate 5 are fixedly connected with the nozzle body 1 through a plurality of connecting columns 6, one end of the nozzle body 1 and one end of the outer spacer 2 are provided with a feed inlet 7, and the other end of the nozzle body 1 and the other end of the outer spacer 2 are provided with a discharge outlet 8.
By means of the technical scheme, through setting up the nozzle that is used for boiler coal pulverizer equipment by nozzle body 1, outer spacer 2, connecting plate 3, blunt body board one 4, blunt body board two 5, spliced pole 6, feed inlet 7, discharge gate 8 constitutes, thereby the burner nozzle heat altered shape loss of burning has been solved, the blunt body board problem of droing, can realize the even injection of material, combustion efficiency has been improved, not only play energy saving and emission reduction, make burner nozzle life-span increase substantially again, maintenance time and cost have been saved for the owner, and efficiency is improved.
Example two:
as shown in fig. 1-3, the outer side wall of the nozzle body 1 is fixedly connected with the inner side wall of the outer spacer 2 through a plurality of connecting plates 3, the nozzle body 1 is internally provided with a blunt body plate I4 and a blunt body plate II 5 in sequence, the blunt body plate I4 and the blunt body plate II 5 are fixedly connected with the nozzle body 1 through a plurality of connecting columns 6, one end of the nozzle body 1 and one end of the outer spacer 2 are provided with a feed inlet 7, the other end of the nozzle body 1 and the other end of the outer spacer 2 are provided with a discharge outlet 8, the middle positions of the two sides of the outer spacer 2 are both provided with a slot 9, the slot 9 is of an inverted trapezoidal structure, a plurality of hoisting holes 10 are arranged at the middle positions of the nozzle body 1 close to the two sides of the open slot 9, a buffer cavity 11 is formed between the nozzle body 1 and the outer spacer 2, and the connecting plate 3 is positioned inside the buffer cavity 11.
Example three:
as shown in fig. 1-3, the outer side wall of the nozzle body 1 and the inner side wall of the outer spacer 2 are fixedly connected through a plurality of connecting plates 3, a blunt body plate 1 and a blunt body plate two 5 are sequentially arranged inside the nozzle body 1, the blunt body plate 4 and the blunt body plate two 5 are fixedly connected with the nozzle body 1 through a plurality of connecting posts 6, one ends of the nozzle body 1 and the outer spacer 2 are provided with a feeding port 7, the other ends of the nozzle body 1 and the outer spacer 2 are provided with a discharging port 8, the blunt body plate 4 and the blunt body plate two 5 are in a parallel structure, the blunt body plate 4 and the blunt body plate two 5 are both composed of a main plate body 12 and an arc discharging section 13, the arc discharging section 13 is fixedly connected to one end of the main plate body 12, both sides of the main plate body 12 and the arc discharging section 13 and the inner side wall of the nozzle body 1 are provided with guiding grooves 14, the nozzle body 1 the outer spacer 2 the blunt body board is one 4 the blunt body board two 5 the connecting plate 3 with the spliced pole 6 is the tungsten cobalt alloy material, the connecting plate 3 with the nozzle body 1 with between the outer spacer 2 the spliced pole 6 with the blunt body board one 4 the blunt body board two 5 with be the welded connection structure between the nozzle body 1.
For the convenience of understanding the technical solutions of the present invention, the following detailed description will be made on the working principle or the operation mode of the present invention in the practical process.
In practical application, the sectional area through the perimeter wind spout to the combustor carries out reasonable design to and nozzle body 1, outer spacer 2, blunt body board one 4, blunt body board two 5, chooseing for use of connecting plate 3 and 6 materials of spliced pole, the special design of blunt body board one 4 and blunt body board two 5 has solved the combustor nozzle heat altered shape scaling loss, the blunt body board drops the problem, can realize the even injection of material, combustion efficiency has been improved, not only play energy saving and emission reduction, make the combustor nozzle life-span increase substantially again.
In summary, according to the technical scheme of the utility model, the nozzle for the boiler coal mill equipment, which is composed of the nozzle body 1, the outer spacer sleeve 2, the connecting plate 3, the blunt body plate I4, the blunt body plate II 5, the connecting column 6, the feeding hole 7 and the discharging hole 8, is arranged, so that the problems of thermal deformation burning loss and falling-off of the blunt body plate of the burner nozzle are solved, the uniform injection of materials can be realized, the combustion efficiency is improved, the energy conservation and emission reduction are achieved, the service life of the burner nozzle is greatly prolonged, the overhaul time and cost are saved for an owner, and the efficiency is improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. The utility model provides a nozzle for boiler coal pulverizer equipment, its characterized in that, including nozzle body (1) and outer spacer (2), the lateral wall of nozzle body (1) with through a plurality of connecting plate (3) fixed connection between the inside wall of outer spacer (2), the inside of nozzle body (1) has set gradually blunt body board (4) and blunt body board two (5), blunt body board (4) with blunt body board two (5) with through a plurality of spliced pole (6) fixed connection between nozzle body (1), nozzle body (1) with the one end of outer spacer (2) is provided with feed inlet (7), nozzle body (1) with the other end of outer spacer (2) is provided with discharge gate (8).
2. The nozzle for the boiler coal mill equipment as claimed in claim 1, wherein the middle positions of the two sides of the outer spacer sleeve (2) are both provided with a slot (9), and the slots (9) are of an inverted trapezoidal structure.
3. The nozzle for a coal mill equipment of a boiler as claimed in claim 2, characterized in that the nozzle body (1) is provided with a plurality of lifting holes (10) near the middle of the two sides of the slot (9).
4. Nozzle for a boiler coal mill installation according to claim 1, characterized in that a buffer chamber (11) is formed between the nozzle body (1) and the outer spacer (2), the connection plate (3) being located inside the buffer chamber (11).
5. The nozzle for a coal mill equipment of a boiler as recited in claim 1, characterized in that the blunt plate one (4) and the blunt plate two (5) are in a parallel structure, and the blunt plate one (4) and the blunt plate two (5) are both composed of a main plate body (12) and an arc discharge section (13), and the arc discharge section (13) is fixedly connected to one end of the main plate body (12).
6. The nozzle for a boiler coal mill apparatus as claimed in claim 5, characterized in that the two sides of the main plate body (12) and the arc-shaped discharge section (13) and the inner side wall of the nozzle body (1) are provided with guide grooves (14).
7. The nozzle for a boiler coal mill apparatus according to claim 1, wherein the nozzle body (1), the outer spacer (2), the blunt plate one (4), the blunt plate two (5), the connecting plate (3) and the connecting column (6) are all of tungsten-cobalt alloy.
8. The nozzle for a boiler coal mill installation according to claim 1, characterized in that welded connections are provided between the connection plate (3) and the nozzle body (1) and the outer spacer (2), and between the connection column (6) and the blunt plate one (4), the blunt plate two (5) and the nozzle body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121946074.6U CN215637128U (en) | 2021-08-19 | 2021-08-19 | Nozzle for boiler coal mill equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121946074.6U CN215637128U (en) | 2021-08-19 | 2021-08-19 | Nozzle for boiler coal mill equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215637128U true CN215637128U (en) | 2022-01-25 |
Family
ID=79899320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121946074.6U Active CN215637128U (en) | 2021-08-19 | 2021-08-19 | Nozzle for boiler coal mill equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215637128U (en) |
-
2021
- 2021-08-19 CN CN202121946074.6U patent/CN215637128U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4924784A (en) | Firing of pulverized solvent refined coal | |
| CN101532678B (en) | Brown gas (oxyhydrogen gas) ignition system of coal burning boiler of power plant | |
| CN106016345B (en) | A kind of device for reducing water-cooling wall temperature deviation installed in supercritical W-shaped flame boiler | |
| CN111412483A (en) | Medium-speed grinding powder system for grinding high-moisture lignite | |
| CN215637128U (en) | Nozzle for boiler coal mill equipment | |
| CN101280919B (en) | Forward and backward wall opposite rushing combustion boiler hearth as well as method for arranging air nozzle on side wall | |
| CN100532937C (en) | Turbulent burner for little oil quantity gasification and burning, lateral-igniting and central coal powder-feeding | |
| CN212005752U (en) | Medium-speed grinding powder system for grinding high-moisture lignite | |
| CN209084811U (en) | A kind of pulverized coal preparation system that flame kernel is controllable mill dislocation pulverized coal channel arrangement system | |
| CN100578085C (en) | Multiple fire hole flame-free ceramic burner | |
| CN102818247B (en) | Efficient steam boiler for gasification and combined combustion of pulverized coal | |
| CN206222341U (en) | The automatic continuous ash discharging gear of bagasse boiler fixed grate | |
| CN210069832U (en) | A hood for circulating fluidized bed boiler | |
| CN214370150U (en) | Plasma ignition self-sustaining stable-combustion low-nitrogen combustion device | |
| CN101571317B (en) | Fire coal self-controlled boiler | |
| JP7475876B2 (en) | Emission device, solid fuel pulverizer, boiler system, and method for operating the emission device | |
| CN214682256U (en) | Impeller device for medium-speed coal mill | |
| CN209801472U (en) | A spacing formula hood for circulating fluidized bed boiler | |
| CN219083153U (en) | Horizontally arranged powder accumulation prevention gas-solid two-phase flow double-adjustable distributor | |
| CN219995328U (en) | Swirl burner | |
| CN220186817U (en) | Heat-accumulating energy-saving catalytic combustion furnace | |
| CN211261742U (en) | Fuel furnace for smelting metal | |
| CN215831895U (en) | Multi-purpose combustor of biomass boiler | |
| CN203148019U (en) | High-efficiency coal powder gasification and coal powder compound combustion hot water boiler | |
| CN201050782Y (en) | Opposite flowing type coal power burner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |