CN107166380A - Vortex burner surely fires ring structure - Google Patents
Vortex burner surely fires ring structure Download PDFInfo
- Publication number
- CN107166380A CN107166380A CN201710502585.0A CN201710502585A CN107166380A CN 107166380 A CN107166380 A CN 107166380A CN 201710502585 A CN201710502585 A CN 201710502585A CN 107166380 A CN107166380 A CN 107166380A
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- China
- Prior art keywords
- steady
- pressing plate
- tooth
- steady flame
- ring body
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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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
Ring structure is surely fired the invention discloses a kind of vortex burner, including steady combustion ring body, also include several steady flame tooth, pressing plate, bolt assemblies, the steady flame tooth is pressed together in steady combustion ring body by pressing plate, pressing plate is arranged in steady combustion ring body, and bolt assembly is through steady combustion ring body, pressing plate and steady flame tooth, so that steady flame tooth is fixed on steady combustion ring, steady flame tooth is disposed in an evenly spaced relation in steady combustion ring body, and the windward side of the steady flame tooth is made up of carborundum.Silicon surely fire ring can heat resistant and wear resistant damage, can effectively prevent that surely fire tooth scaling loss comes off, the service life of extension burner, raising power plant safety and economy.
Description
Technical field
The invention belongs to power plant's turbulent burner technical field, more particularly to a kind of turbulent burner low NOx is low negative
Lotus smooth combustion apparatus.
Background technology
Steady combustion loop device is arranged on the primary air piping outlet end of turbulent burner, coal dust when breeze airflow passes through the device
Particle is assembled to primary air piping outer ring, improves the growing amount of coal powder density, effectively reduction NOx, reduces ignition heat, is conducive to low negative
Breeze airflow catches fire and stablizes burning in time during lotus and during burning inferior coal.
Turbulent burner with steady flame tooth is used to strengthen catching fire for breeze airflow, primary wind and powder equipped with steady combustion ring, steady combustion ring
Air-flow forms certain density breeze airflow in flame flame stabilization ring near zone, and combustion air is divided into two strands, realization by flame stabilization ring
The fractional combustion of burner, is conducive to the growing amount for catching fire and burning and reduce NOX in process of coal combustion of breeze airflow.
In burning an annular return region can be formed about there is provided the enough heat energy that catches fire in steady flame tooth, steady combustion ring,
Prevent Secondary Air to be mixed into too early simultaneously, coal dust is caught fire in time, stable burning can also form one in combustion centre region and return
Flow area, it is ensured that the further after-flame of coal dust.
Steady flame tooth is mainly the turbulence of increase breeze airflow, improves the ignition speed of coal dust, improves low-load combustion-stabilizing.And
And steady flame tooth coordinates the drop realized in the big frame of the overall air distribution design of boiler, burner structure and air distribution as a part
Low NOx effect.
Annular steady flame tooth is tooth form ring-type, and the inner side of flame stabilization ring forms primary air eddy flow, and promoting volume to inhale high-temperature flue gas makes
Pulverized coal particle catches fire rapidly.When breeze airflow is by pulverized coal concentrator, the velocity component of circumferential movement is obtained, most of coal dust is leaned on
Around near-ring shape flame holder, so as to improve the coal powder density near flame stabilization ring, steady combustion ability is enhanced, is adapted to underload steady
Fixed burning.
Turbulent burner surely fires ring at burner outlet using flame, and high temperature gases recirculating heats rapidly coal dust so that
Quick ignition, improves efficiency of combustion, and enhancing low-load combustion-stabilizing ability is strong, and the quick firing coal-dust of burner energy, maintains highly concentrated
Pulverized coal flame is spent, the oxygen concentration in flame is rapidly reduced.Make a part of NO produced in flue gas, the quilt in high temperature flame
The hydrocarbons such as CH are decomposed, and are finally reduced into N2, so as to reduce NOx generation.
At present, the turbulent burner that station boiler is applied, because domestic electricity coal quality is very different, has coking tight
Weight, discharged nitrous oxides height, the easy scaling loss of spout, annular strain is surely fired, the shortcomings of steady combustion tooth comes off.
In the past, steady combustion ring and steady combustion tooth used identical material monoblock cast, because residing air temperature and current washes away environment not
Together, steady combustion odontotripsis is often resulted in serious, steady combustion annular strain is damaged, the problems such as steady combustion tooth hardening cracks, come off, service life is short, sternly
Ghost image rings safe operation of the boiler and increases power plant's maintenance cost.Especially, steady combustion tooth fires the most important part of ring as steady, surely
The abrasion of combustion ring is burnt out and will greatly influence the overall performance of burner, and greatly unsafe factor will be brought to boiler.
The content of the invention
There is provided during the technical problem to be solved in the present invention one kind can heat resistant and wear resistant damage, can effectively prevent from surely firing tooth scaling loss
The vortex burner come off surely fires ring structure.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is：A kind of vortex burner surely fires ring knot
Structure, including steady combustion ring body, in addition to several steady flame tooth, pressing plate, bolt assemblies, the steady flame tooth are pressed together on steady combustion by pressing plate
In ring body, pressing plate is arranged in steady combustion ring body, and bolt assembly is through steady combustion ring body, pressing plate and steady flame tooth, so that will
Steady flame tooth is fixed on steady combustion ring, and steady flame tooth is disposed in an evenly spaced relation in steady combustion ring body, and the windward side of the steady flame tooth is by carbon
SiClx is made.
Further, surely fire ring is divided into the quartering along annular, and each aliquot is in 90 ° of arc, and adjacent grade divides it
Between set 3~5mm gap,
Further, the lower windward side of the steady flame tooth is obliquely installed for reducing the friction with air-flow.
As one of which preferably, the pressing plate is in minor arc row, and two ends set screw to be passed through for bolt assembly, described steady
Flame tooth includes trapezoidal fixed part and teeth portion, and the bottom of fixed part and the upper bottom edge in teeth portion are overlapped, the fixation
Portion is fixed in steady combustion ring body by the pressing of pressing plate fitted bolt component, and pressing plate, the tooth of the steady flame tooth stretch out in the teeth portion
Windward side is also obliquely installed in tooth portion, and sets several annular grooves storage carbonized particles to be used to meet in reduction on upper windward side
Wind face and the direct abrasion of air-flow.
As it is another preferably, the pressing plate be in minor arc row, two ends set screw passed through for bolt assembly, the steady flame
Tooth includes fixed part and teeth portion, and the fixed part is fixed in steady combustion ring body by the pressing of pressing plate fitted bolt component, fixed
Portion is provided with the dovetail part that horizontal direction stretches out pressing plate, and the teeth portion is provided with the dovetail groove that fixed part is engaged, teeth portion
It is flexibly connected by dovetail groove with fixed part, the teeth portion is made up of carbofrax material, and fixed part is made up of heat-resisting stiff alloy,
The upper windward side of the steady flame tooth is also obliquely installed, and sets several annular grooves storage carbonized particles to be used on upper windward side
The direct abrasion of windward side and air-flow in reduction.
From above-mentioned technical proposal it can be seen that this practicality has advantages below：Silicon surely fires ring being capable of heat resistant and wear resistant damage, energy
Effectively prevent that surely firing tooth scaling loss comes off, extend the service life of burner, improve power plant safety and economy, teeth portion it is upper
Windward side is also obliquely installed, and set on upper windward side several annular grooves store carbonized particles be used for reduce windward side with
The direct abrasion of air-flow.The structure can be convenient for changing and install after the damage of steady flame tooth, simple in construction, and not influence machinery
Intensity.
Brief description of the drawings
Fig. 1 is top view of the invention；
Fig. 2 is side sectional view of the invention；
Fig. 3 is the structural representation of center platen of the present invention；
Fig. 4 is the first structural representation of steady flame tooth in the present invention；
Fig. 5 is steady flame second of structural representation of tooth in the present invention.
Embodiment
The embodiment of the present invention is elaborated below in conjunction with accompanying drawing.
As shown in Fig. 1 Fig. 2, vortex burner of the invention surely fires ring structure, including steady combustion ring body 1, dry steady flame
Tooth 3, pressing plate 2, bolt assembly 4, the steady flame tooth 3 are pressed together in steady combustion ring body by pressing plate 2, and pressing plate 2 is arranged on steady combustion ring sheet
On body, its shape is engaged with steady combustion ring body, and bolt assembly 4 fires ring body 1, pressing plate 2 and steady flame tooth 3 through steady, so that
Steady flame tooth 3 is fixed in steady combustion ring body, steady flame tooth 3 is disposed in an evenly spaced relation in steady combustion ring body, and carborundum surely fires tooth edge
Ring is uniform, and quantity is according to jet size unusual 12 or 16.The windward side of the steady flame tooth 3 is made up of carborundum.
Steady combustion ring body material uses the monoblock cast of high temperature resistant 2520, and surely fire ring is divided into the quartering along annular, and each aliquot is in
3~5mm gap is set between 90 ° of arc, adjacent decile, as expansion gap, installed in primary air piping front end, bolt
Component uses heat-resisting alloy steel material.
Silicon surely fire ring can heat resistant and wear resistant damage, can effectively prevent that surely firing tooth scaling loss comes off, extension burner the use longevity
Life, improves power plant safety and economy.
The lower windward side of steady flame tooth 3 can be obliquely installed for reducing the friction with air-flow.
As shown in figure 3, the pressing plate is in minor arc row, two ends set screw to be passed through for bolt assembly, wherein steady flame tooth can
To use following shape：As shown in figure 4, steady flame tooth 3 includes trapezoidal fixed part 5 and teeth portion 6, the bottom of fixed part 5
The upper bottom edge in side and teeth portion is overlapped, and the fixed part 5 is fixed in steady combustion ring body 1 by the pressing of pressing plate fitted bolt component,
Pressing plate 2 is stretched out in the teeth portion 6, and the teeth portion 6 is made up of carbofrax material.This is simple in construction, and steady flame tooth can be played
Good fixation, prevents steady flame tooth from coming off.The upper windward side in teeth portion 6 is also obliquely installed, and if being set on upper windward side
Dry annular groove is used to store the direct abrasion that pulverized coal particle is used to reduce windward side and breeze airflow.
In steady flame tooth can use following shape：As shown in figure 5, steady flame tooth includes fixed part 5 and teeth portion 6, it is described solid
Determine portion 5 to be fixed in steady combustion ring body by the pressing of pressing plate fitted bolt component, fixed part 5 is provided with horizontal direction and stretches out pressing plate
Dovetail part, the teeth portion 6 is provided with the dovetail groove that fixed part is engaged, and teeth portion 6 is connected by dovetail groove and fixed part activity
Connect, the teeth are made up of carbofrax material, fixed part is made up of heat-resisting stiff alloy, the upper windward side in teeth portion, which is also tilted, to be set
Put, and set several annular grooves to store the direct mill that carbonized particles are used to reduce windward side and air-flow on upper windward side
Damage.The structure can be convenient for changing and install after the damage of steady flame tooth, simple in construction, and not influence mechanical strength.
The typical method of embodiments of the present invention is described in detail above in association with accompanying drawing, still, the present invention is not limited to
Detail in above-mentioned embodiment, in the range of the technology design of the present invention, can be carried out to technical scheme
A variety of simple variants, these simple variants belong to protection scope of the present invention.
It is further to note that each particular technique feature described in above-mentioned embodiment, in not lance
In the case of shield, simple structure change can be passed through.In order to avoid unnecessary repetition, the present invention is to various possible changes
Mode no longer separately illustrates.
In addition, any simple structure can also be carried out between a variety of embodiments of the present invention changes thin with size
Small to change, as long as it is without prejudice to the thought of the present invention, it should equally be considered as content disclosed in this invention.
Claims (7)
1. a kind of vortex burner surely fires ring structure, including steady combustion ring body, it is characterised in that:Also include several steady flames
Tooth, pressing plate, bolt assembly, the steady flame tooth are pressed together in steady combustion ring body by pressing plate, and pressing plate is arranged in steady combustion ring body, spiral shell
Bolt assembly is through steady combustion ring body, pressing plate and steady flame tooth, so as to steady flame tooth is fixed on steady combustion ring, steady flame tooth uniform intervals
It is arranged in steady combustion ring body, the windward side of the steady flame tooth is made up of carborundum.
2. vortex burner according to claim 1 surely fires ring structure, it is characterised in that：It is steady to fire being divided into along annular for ring
The quartering, each aliquot is in that 3~5mm gap is set between 90 ° of arc, adjacent decile.
3. the vortex burner according to claims 1 or 2 surely fires ring structure, it is characterised in that：The steady flame tooth
Lower windward side is obliquely installed for reducing the friction with air-flow.
4. the vortex burner according to claims 1 or 2 surely fires ring structure, it is characterised in that：The pressing plate is in bad
Arc row, two ends set screw to be passed through for bolt assembly, and the steady flame tooth includes trapezoidal fixed part and teeth portion, fixed
The bottom in portion and the upper bottom edge in teeth portion are overlapped, and the fixed part is fixed on steady combustion ring sheet by the pressing of pressing plate fitted bolt component
On body, pressing plate is stretched out in the teeth portion.
5. vortex burner according to claim 4 surely fires ring structure, it is characterised in that：The teeth portion of the steady flame tooth
Upper windward side is also obliquely installed, and sets several annular grooves to store carbonized particles for reducing windward side on upper windward side
With the direct abrasion of air-flow.
6. the vortex burner according to claims 1 or 2 surely fires ring structure, it is characterised in that：The pressing plate is in bad
Arc row, two ends set screw to be passed through for bolt assembly, and the steady flame tooth includes fixed part and teeth portion, and the fixed part is by pressing
The pressing of plate fitted bolt component is fixed in steady combustion ring body, and fixed part is provided with the dovetail part that horizontal direction stretches out pressing plate, institute
State teeth portion and be provided with the dovetail groove that fixed part is engaged, teeth portion is flexibly connected by dovetail groove with fixed part, the teeth portion
It is made up of carbofrax material, fixed part is made up of heat-resisting stiff alloy.
7. vortex burner according to claim 5 surely fires ring structure, it is characterised in that：The steady flame tooth it is upper windward
Face is also obliquely installed, and sets several annular grooves to store carbonized particles for reducing windward side and air-flow on upper windward side
Direct abrasion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710502585.0A CN107166380A (en) | 2017-06-27 | 2017-06-27 | Vortex burner surely fires ring structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710502585.0A CN107166380A (en) | 2017-06-27 | 2017-06-27 | Vortex burner surely fires ring structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107166380A true CN107166380A (en) | 2017-09-15 |
Family
ID=59826825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710502585.0A Pending CN107166380A (en) | 2017-06-27 | 2017-06-27 | Vortex burner surely fires ring structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107166380A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108758629A (en) * | 2018-07-10 | 2018-11-06 | 东方电气集团东方锅炉股份有限公司 | low nitrogen oxide gas burner |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1477330A (en) * | 2003-06-23 | 2004-02-25 | 西安交通大学 | Radial gradient two air-controlled cyclone coal dust combustor |
| CN201014435Y (en) * | 2007-02-13 | 2008-01-30 | 杭州意能节能技术有限公司 | Stable combustion tooth energy-saving coal powder combustor |
| CN202598507U (en) * | 2012-06-07 | 2012-12-12 | 哈尔滨锅炉厂有限责任公司 | Novel steady burning tooth for lignite swirling burner |
| CN203309255U (en) * | 2013-06-26 | 2013-11-27 | 武汉钢铁(集团)公司 | Anti-abrasion conical regulating valve of annular gap scrubber |
| CN205897134U (en) * | 2016-08-15 | 2017-01-18 | 东方电气集团东方锅炉股份有限公司 | Wear proof device of steady flame tooth among vortex burner |
-
2017
- 2017-06-27 CN CN201710502585.0A patent/CN107166380A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1477330A (en) * | 2003-06-23 | 2004-02-25 | 西安交通大学 | Radial gradient two air-controlled cyclone coal dust combustor |
| CN201014435Y (en) * | 2007-02-13 | 2008-01-30 | 杭州意能节能技术有限公司 | Stable combustion tooth energy-saving coal powder combustor |
| CN202598507U (en) * | 2012-06-07 | 2012-12-12 | 哈尔滨锅炉厂有限责任公司 | Novel steady burning tooth for lignite swirling burner |
| CN203309255U (en) * | 2013-06-26 | 2013-11-27 | 武汉钢铁(集团)公司 | Anti-abrasion conical regulating valve of annular gap scrubber |
| CN205897134U (en) * | 2016-08-15 | 2017-01-18 | 东方电气集团东方锅炉股份有限公司 | Wear proof device of steady flame tooth among vortex burner |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108758629A (en) * | 2018-07-10 | 2018-11-06 | 东方电气集团东方锅炉股份有限公司 | low nitrogen oxide gas burner |
| CN108758629B (en) * | 2018-07-10 | 2024-04-12 | 东方电气集团东方锅炉股份有限公司 | Low-oxynitride gas burner |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170915 |
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| RJ01 | Rejection of invention patent application after publication |