CN207350325U - A kind of new step arch W flame boiler furnace structure - Google Patents
A kind of new step arch W flame boiler furnace structure Download PDFInfo
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- CN207350325U CN207350325U CN201720797089.8U CN201720797089U CN207350325U CN 207350325 U CN207350325 U CN 207350325U CN 201720797089 U CN201720797089 U CN 201720797089U CN 207350325 U CN207350325 U CN 207350325U
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- Prior art keywords
- arch
- burner
- lower hearth
- boiler furnace
- hearth
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- 230000008878 coupling Effects 0.000 claims abstract description 5
- 238000010168 coupling process Methods 0.000 claims abstract description 5
- 238000005859 coupling reaction Methods 0.000 claims abstract description 5
- 238000002485 combustion reaction Methods 0.000 claims description 15
- 238000001816 cooling Methods 0.000 claims description 9
- 210000004894 snout Anatomy 0.000 claims description 8
- 210000000038 chest Anatomy 0.000 abstract description 3
- 239000003245 coal Substances 0.000 description 7
- 239000007789 gas Substances 0.000 description 3
- 241000143973 Libytheinae Species 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 2
- 239000003830 anthracite Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000002817 coal dust Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000004071 soot Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
- 238000003079 width control Methods 0.000 description 1
Landscapes
- Combustion Of Fluid Fuel (AREA)
Abstract
The utility model is a kind of new step arch W flame boiler furnace structure, the chamber structure is divided into upper furnace (7) and lower hearth (1) two parts from top to bottom, is connected among upper lower hearth by upper lower hearth coupling tube group (8).The forward and backward wall of lower hearth (1) forms the chimney arch (2) of step by bend pipe, and respectively one row's main burner (3) of arrangement, the burner are used and be staggered in arrangement on chimney arch (2) every grade of step of step.The technical program is by using new step arch W flame boiler furnace structure design, the double-row burner arrangement form that can be changed to former W flame boiler typical front-back wall arch upper single burner arrangement form on front-back wall step arch.After this step arch W flame pot thorax structure and the upper double-row burner arrangement form of arch, the furnace width of 1000MW and ratings above W flame boiler can be greatly reduced, and be provided simultaneously with economy and security features.
Description
Technical field
It the utility model is related to pulverized-coal fired boiler.It is super to be used for thermal power plant 1000MW capacitance grades more particularly, to one kind
The W flame boiler furnace structure of critical pulverized-coal fired boiler.
Background technology
W flame boiler be mainly used for burning low reaction characteristic anthracite and meager coal inferior, burner hearth by lower combustion chamber and
Top cooling chamber composition, fuel combustion process all carry out in lower combustion room substantially.Arch transition is used between upper lower hearth,
Burner arrangement is burnt in chimney arch position, breeze airflow from the downward spray ignition of vault.The coal dust in breeze airflow after catching fire
After particle undershoot to lower furnace portion, for pulverized coal particle due to burning weight loss weight saving, high-temperature flue gas is burned room lower part classification wind
Picking-up, in burner hearth divulge information uplift force under the action of upwards turnover flowing, in lower combustion room formed W type flames.It is such a
Chamber structure design can ensure the anthracite of low reaction characteristic and meager coal stable ignition and follow-up efficient burning in stove inferior.
For 600MW grades and following W flame boiler, one row's burner of each arrangement at the top of the forward and backward chimney arch of burner hearth.When W fire
When flame boiler capacity increases to 1000MW grades, limited by single burner heat input rate, number of burners need to increase to 48 left sides
The right side, if still one row's burner of each arrangement at the top of the forward and backward chimney arch of burner hearth, furnace width need to increase considerably, on stove cross direction
The large girder of suspension function is played to boiler and the buckstay of support and explosion-proof is played to boiler, and is responsible for combustion system confession
The structure design of the component such as the secondary air bellow framework of wind and soot blower system can run into unsurmountable technical problem.Cause
This to by W flame boiler 600MW class capabilities to more capacity develop, it is necessary to solve in acceptable furnace width such as
What accommodates the problem of more multi-combustor.And new burner hearth and the structure type of combustion system must are fulfilled for coal dust and stablize in stove
The requirement caught fire with follow-up efficient burning.
The content of the invention
The purpose of this utility model is to provide a kind of new double arch W flame boiler furnace structures, which does not change biography
Double domes of system W flame boiler, the arrangement of burner is more flexible, can effectively solve the problem that unit capacity increases to
The Layout Problem of 1000MW and ratings above afterburner, while by furnace width control in the range of acceptable 33 ~ 37 meters,
So as to avoid boiler steel structure large girder and the buckstay of support and explosion-proof is played to boiler, and it is responsible for combustion system confession
There is unsurmountable skill because burner hearth is wide in the structure design of the component such as the secondary air bellow framework of wind and soot blower system
Art obstacle.
In order to realize the purpose of this utility model, following technical scheme is proposed：
A kind of new double step arch W flame boiler furnace structure, the chamber structure are divided into 7 He of upper furnace from top to bottom
1 two parts of lower hearth, are connected by upper lower hearth coupling tube group 8 among upper lower hearth.The forward and backward wall of lower hearth 1 passes through bend pipe
The chimney arch 2 of step is formed, respectively one row's main burner 3 of arrangement, the burner use on every grade of step of chimney arch 2 of step
It is staggered in arrangement.
The height of described every grade of step of lower hearth chimney arch 2, which leaves enough spaces, can do horizontal support, meet chimney arch intensity
It is required that.
The lack of gas wind snout 5 and classification wind snout 6 that the main burner 3, burner hearth are equipped with are arranged in the forward and backward of lower hearth 1
On wall water-cooling wall.
The corner of the lower hearth 1 is corner cut formula structure type, and corner cut structure is formed after being bent by water-cooling wall pipe.
7 chimney arch of upper furnace, 2 gradient of the boiler furnace is inclined upwardly 15 ° ~ 20 °, each two rows of main combustions of arrangement on chimney arch 2
Burner 3, for 1000MW and ratings above W flame boiler furnace.
, can be typically front and rear by former W flame boiler by using new double step arch W flame boiler furnace structure design
The upper single burner arrangement form of wall arch is changed to the double-row burner arrangement form on front-back wall step arch.Encircleed using this step
After shape W flame pot thorax structure and the upper double-row burner arrangement form of arch, the furnace width of 1000MW and ratings above W flame boiler
It can be greatly reduced.
This double step arch W flame boiler furnace structure is provided simultaneously with economy and security features, suitable for 1000MW
And ratings above W flame boiler.
Brief description of the drawings
Fig. 1 is chamber structure side view；
Fig. 2 is chamber structure front view；
Fig. 3 is the upper burner arrangement schematic diagram of lower hearth arch；
Wherein：1 lower hearth, 2 chimney arch, 3 main burners, 4 burner hearth buckstays, 5 lack of gas wind snouts, 6 classification wind snouts, on 7
Burner hearth, lower hearth coupling tube group on 8.
Embodiment
It is below in conjunction with attached drawing and specifically real for the purpose of this utility model, technical solution and advantage is more clearly understood
Example is applied, the utility model is further described.
Fig. 1 is chamber structure side view；Fig. 2 is chamber structure front view.As shown in the figure, the double arch W flame pots of the utility model
Stove burner hearth is divided into 1 two parts of upper furnace 7 and lower hearth from top to bottom, is connected among upper lower hearth by upper lower hearth coupling tube group 8
Connect.The primary combustion system equipments such as main burner 3, lack of gas wind snout 5 and classification wind snout 6 are arranged in the front-back wall of lower hearth 1
On water-cooling wall.1 front-back wall of lower hearth forms step chimney arch 2 by bend pipe, and a row is respectively arranged on the every grade of step of step chimney arch 2
Main burner 3, while step leaves enough height, horizontal support can be done by leaving enough spaces, meet chimney arch intensity requirement.
Fig. 3 is the upper burner arrangement schematic diagram of lower hearth arch, and double arch W flame boiler furnace lower hearth corners are corner cut formula
Structure type, corner cut structure are formed after being bent by water-cooling wall pipe.The main combustion of front-back wall is shown by lower hearth viewgraph of cross-section
3 arrangement form of burner and burner hearth corner corner cut structure.Burner uses the double arrangement of stagger arrangement.
The structure is solved after boiler capacity increases to 1000MW and ratings above, the Layout Problem of burner.Often row master
Spacing between burner is chosen according to the Actual combustion and coking property of coal by standard.The design main burner level interval
2090m is set to according to coal characteristic, 48 main burners need to be arranged according to the requirement of 1000MW boiler capacities, such as by traditional front and rear
The single arrangement of burner of wall, often row need to arrange 24 main burners, consider further that most on side main burner to burner hearth side water cooling
The safe distance of wall, furnace width are up to 57585mm, and the burner hearth of such width is boiler steel structure, top plate（Large girder）With
The buckstay of support and explosion-proof is played to boiler, and is responsible for the secondary air bellow framework of combustion system air feed and boiler is blown
There is unsurmountable technology barrier because burner hearth is wide in the structure design of the components such as ash system.
New double-arch furnace structure, main burner can use double configuration mode on front and rear water cooling mural arch, often row master
Number of burners is reduced to 12 by original 24, on the premise of maintaining former main burner level interval 2090mm constant,
Furnace width can be greatly reduced to 34595mm, effectively shortens the size of furnace chamber width, can more reasonable Arrangement it is big
The boiler supports such as plate-girder, buckstay and bellows framework, make boiler supports structure similar to routine 600MW grade boilers, overcome
Stove is wide to increase considerably caused technical bottleneck., can be with meanwhile the upper main burner of step arch uses the arrangement form of double stagger arrangement
Effectively avoid catching fire the interfering with each other of initial stage in breeze airflow between burner, it is ensured that the combustion stability of every burner.
The utility model is adapted to 1000MW and above capacitance grade W flame boiler furnace structure.
By taking 1000MW capacity W flame boiler furnaces as an example, upper furnace depth is 13420mm, and lower furnace depth is
26620mm, upper and lower furnace width are 34595mm, and the chimney arch gradient is inclined upwardly 15 ° ~ 20 °, stove of the main burner 3 in lower hearth 1
Each arrangement is two rows of on arch 2, often arranges 12, every stove totally 48 main burners.
After this boiler furnace structure solves boiler capacity increase, the Layout Problem of burner, meanwhile, effectively shorten stove
The size of thorax width, can more boiler supports such as reasonable Arrangement large girder, buckstay and bellows framework, make boiler supports
Structure is similar to routine 600MW grade boilers, overcomes that stove is wide to increase considerably caused technical bottleneck.The upper double mistake of step arch
The arrangement form of row burner, it is possible to prevente effectively from catching fire the interfering with each other of initial stage in breeze airflow between burner, it is ensured that
The combustion stability of every burner.
Particular embodiments described above, has carried out into one the purpose of this utility model, technical solution and beneficial effect
The detailed description of step, it should be understood that the foregoing is merely specific embodiment of the utility model, is not limited to
The utility model, where within the spirit and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should all
It is included within the scope of protection of this utility model.
Claims (5)
1. a kind of new step arch W flame boiler furnace structure, it is characterised in that the chamber structure is divided into from top to bottom
Burner hearth (7) and lower hearth (1) two parts, are connected by upper lower hearth coupling tube group (8) among upper lower hearth, lower hearth (1)
Forward and backward wall forms the chimney arch (2) of step by bend pipe, the respectively arrangement main combustion of one row on chimney arch (2) every grade of step of step
Burner (3), the burner are used and are staggered in arrangement.
2. boiler furnace structure according to claim 1, it is characterised in that every grade of step of the lower hearth chimney arch (2)
Horizontal support can be done by highly leaving enough spaces.
3. boiler furnace structure according to claim 1, it is characterised in that the main burner (3), burner hearth are equipped with weary
Gas wind snout (5) and classification wind snout (6) are arranged on the forward and backward wall water-cooling wall of lower hearth (1).
4. boiler furnace structure according to claim 1, it is characterised in that the corner of the lower hearth (1) is corner cut formula
Structure type, corner cut structure are formed after being bent by water-cooling wall pipe.
5. boiler furnace structure according to claim 1, it is characterised in that the upper furnace (7) of the boiler furnace is front and rear
Wall is double step domes, and chimney arch (2) gradient of lower hearth is inclined upwardly 15 °~20 °, and each arrangement is two rows of on chimney arch (2)
Main burner (3), for 1000MW and ratings above W flame boiler furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720797089.8U CN207350325U (en) | 2017-07-04 | 2017-07-04 | A kind of new step arch W flame boiler furnace structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720797089.8U CN207350325U (en) | 2017-07-04 | 2017-07-04 | A kind of new step arch W flame boiler furnace structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207350325U true CN207350325U (en) | 2018-05-11 |
Family
ID=62359111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720797089.8U Withdrawn - After Issue CN207350325U (en) | 2017-07-04 | 2017-07-04 | A kind of new step arch W flame boiler furnace structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207350325U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107228358A (en) * | 2017-07-04 | 2017-10-03 | 北京巴布科克·威尔科克斯有限公司 | A kind of new step arch W flame boiler furnace structure |
-
2017
- 2017-07-04 CN CN201720797089.8U patent/CN207350325U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107228358A (en) * | 2017-07-04 | 2017-10-03 | 北京巴布科克·威尔科克斯有限公司 | A kind of new step arch W flame boiler furnace structure |
| CN107228358B (en) * | 2017-07-04 | 2024-01-30 | 北京巴布科克·威尔科克斯有限公司 | Double-step arched W-flame boiler hearth structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180511 Effective date of abandoning: 20240130 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20180511 Effective date of abandoning: 20240130 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |