CN106439773B - A kind of boiler of large capacity π type twin flue arrangement - Google Patents
A kind of boiler of large capacity π type twin flue arrangement Download PDFInfo
- Publication number
- CN106439773B CN106439773B CN201610927413.3A CN201610927413A CN106439773B CN 106439773 B CN106439773 B CN 106439773B CN 201610927413 A CN201610927413 A CN 201610927413A CN 106439773 B CN106439773 B CN 106439773B
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- Prior art keywords
- flue
- boiler
- end ductwork
- large capacity
- horizontal
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/06—Flue or fire tubes; Accessories therefor, e.g. fire-tube inserts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J11/00—Devices for conducting smoke or fumes, e.g. flues
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J3/00—Removing solid residues from passages or chambers beyond the fire, e.g. from flues by soot blowers
- F23J3/02—Cleaning furnace tubes; Cleaning flues or chimneys
Abstract
The invention discloses a kind of boiler of large capacity π type twin flue arrangement, the boiler have π type structure and the boiler include burner hearth and with the sequentially connected horizontal flue in outlet and back-end ductwork above burner hearth, the back-end ductwork goes out mouth down setting；Horizontal flue includes the left side horizontal flue and right side horizontal flue for being separated and being set side by side, and back-end ductwork includes the left side back-end ductwork and right side back-end ductwork for being separated and being set side by side；Left side horizontal flue connect to form left flue with left side back-end ductwork, and right side horizontal flue connect to form right flue with right side back-end ductwork, the twin flue structure of left flue and right flue composition boiler.The present invention is by being divided into the two independent flues in left and right in transverse direction for the later flue of boiler furnace outlet, to reserve framework arrangement space for boiler middle part and be supported to top plate, is conducive to reduce top plate size and reduces the manufacture difficulty of top plate, reduce boiler manufacture cost and improve Boiler Stability.
Description
Technical field
The present invention relates to boiler technology fields, more particularly, are related to a kind of boiler of large capacity π type twin flue arrangement.
Background technique
Conventional π type arrangement boiler is an integral structure from furnace outlet rear pass in transverse direction, and tail vertical well is single cigarette
Road, twin flue, Multi-flue arrangement, its segregation form is by longitudinal before and after boiler when tail vertical well is arranged using twin flue or Multi-flue
It shares separation flue to be connected in parallel, independent arrangement.
In the boiler of this structure, for boiler top plate in the lesser situation of size of burner hearth, top plate can more conveniently
Arrangement.But as the enlargement of boiler develops, for the heavy duty boiler of 1300MW or more, size of burner hearth substantially increases,
Occur the various problems such as boiler top plate is oversized, transport is transfinited, the top plate enlargement accuracy of manufacture is difficult to meet the requirements therewith.
Such as 1300MW grade Opposite Firing Boiler, top plate length is about 42.5 meters, according to conventional scheme, i.e., in
Between without center pillar support scheme, since boiler load is excessive, big section top plate need to be chosen, highly will be more than 9 meters, two-fold beam monolithic is
It has been more than 4.3 meters of the delivery limit, shipping can not have been manufactured in factory.According to making in site, then have to the place at scene higher
Requirement, general scene can not provide the place met the requirements.It is separately exactly using three stoplog schemes, this scheme has been subjected to scientific research opinion
Card, scheme is that feasible but current difficult point is the accuracy of manufacture and installation accuracy, it is final assess three stoplog project risks compared with
Greatly, it should not use.According to conventional scheme, top plate specification is H9200 × 1600 × 50 × 140；L=42.5m, using this patent
Scheme top plate specification is H6000 × 1300 × 30 × 100；L=42.5m largely reduces top plate specification, it is made to meet system
Make shipping restrictive condition.
Summary of the invention
In order to solve the problems in the existing technology, the object of the present invention is to provide one kind to reserve for boiler middle part
Framework arrangement space, the boiler for reducing top plate size and reducing the large capacity π type twin flue arrangement of top plate manufacture difficulty.
The present invention provides a kind of boiler of large capacity π type twin flue arrangement, the boiler has π type structure and described
Boiler include burner hearth and with the sequentially connected horizontal flue in outlet and back-end ductwork above burner hearth, the back-end ductwork go out
Mouth down setting；Wherein, the horizontal flue includes being separated and the horizontal cigarette of the left side horizontal flue being set side by side and right side
Road, the back-end ductwork include the left side back-end ductwork and right side back-end ductwork for being separated and being set side by side；The horizontal cigarette in left side
Road connect to form left flue with left side back-end ductwork, and right side horizontal flue connect to form right flue with right side back-end ductwork, left cigarette
Road and right flue constitute the twin flue structure of boiler.
One embodiment of the boiler of large capacity π type twin flue arrangement according to the present invention, the left flue and right flue it
Between be provided with the boiler steel frame for being used to support top plate.
One embodiment of the boiler of large capacity π type twin flue arrangement according to the present invention, the left flue and right flue it
Between be provided with fixed soot blower.
One embodiment of the boiler of large capacity π type twin flue arrangement according to the present invention, in the left flue and right flue
It is respectively arranged with the gas proportioning damper for capableing of separately adjustable aperture.
One embodiment of the boiler of large capacity π type twin flue arrangement according to the present invention, the left side back-end ductwork and the right side
Side back-end ductwork is single flue structure, or the twin flue or three flue structures that are separated by partition wall.
One embodiment of the boiler of large capacity π type twin flue arrangement according to the present invention, the left side back-end ductwork and the right side
Low temperature heating surface is disposed in the back-end ductwork of side.
One embodiment of the boiler of large capacity π type twin flue arrangement according to the present invention, the low temperature heating surface are to save coal
Device, low-temperature reheater and/or low temperature superheater.
One embodiment of the boiler of large capacity π type twin flue arrangement according to the present invention, the left flue and right flue etc.
Set up separately and sets and cross-sectional area is equal.
Compared with prior art, the present invention is by being divided into left and right in transverse direction for the later flue of boiler furnace outlet
Two independent flues, to be conducive to reduce top plate to reserve framework arrangement space in the middle part of boiler and being supported top plate
Size and the manufacture difficulty for reducing top plate；In addition, the gas baffle in two flues in left and right can be separately adjustable, can independently adjust
The flue gas flow of left and right flue advantageously reduces boiler manufacture cost convenient for smoke temperature and Temperature Deviation at left and right sides of control boiler
And improve Boiler Stability.
Detailed description of the invention
Fig. 1 shows the right view structure of the boiler of large capacity π type twin flue arrangement according to an exemplary embodiment of the present invention
Schematic diagram.
Fig. 2 shows the plan structures of the boiler of large capacity π type twin flue according to an exemplary embodiment of the present invention arrangement
Schematic diagram.
Description of symbols:
10- burner hearth, 20- horizontal flue, the left side 21- horizontal flue, the right side 22- horizontal flue, 30- back-end ductwork, 31- are left
Flue, the left side 312- tail portion rear pass, the right side 321- tail portion before side back-end ductwork, the right side 32- back-end ductwork, the left side 311- tail portion
Tail portion rear pass, 40- partition wall on the right side of preceding flue, 322-；Double dashed arrow --- flow of flue gas direction.
Specific embodiment
All features disclosed in this specification or disclosed all methods or in the process the step of, in addition to mutually exclusive
Feature and/or step other than, can combine in any way.
Any feature disclosed in this specification (including any accessory claim, abstract and attached drawing), except non-specifically chatting
It states, can be replaced by other alternative features that are equivalent or have similar purpose.That is, unless specifically stated, each feature is only
It is an example in a series of equivalent or similar characteristics.
The structure for the boiler arranged to large capacity π type twin flue of the present invention and principle are described in detail below.
Wherein, large capacity refers to that the power of boiler is 1300MW or more；π type boiler be skilled in the art realises that boiler form,
Its type is gained the name like π, and it is water-cooling wall around burner hearth that the left side vertical portion of π type boiler, which is usually the burner hearth part of boiler, screen
Formula superheater is typically located at its top, and the upper surface of π type boiler horizontal component is usually the horizontal flue part of boiler, high
Warm superheater, high temperature reheater etc. are typically located in horizontal flue；The right vertical portion of π type boiler is usually the tail of boiler
The rear vertical well gas flue of portion's flue portion or referred to as boiler, low temperature superheater, low-temperature reheater and province's coal gas are often arranged in this
In.
Fig. 1 shows the right view structure of the boiler of large capacity π type twin flue arrangement according to an exemplary embodiment of the present invention
Schematic diagram, Fig. 2 shows the plan structures of the boiler of large capacity π type twin flue according to an exemplary embodiment of the present invention arrangement to show
It is intended to.
As depicted in figs. 1 and 2, an exemplary embodiment of the present invention, the boiler of the large capacity π type twin flue arrangement
With π type structure and boiler include burner hearth 10 and with the sequentially connected horizontal flue 20 in outlet of the top of burner hearth 10 and tail portion
Flue 30, back-end ductwork 30 go out mouth down setting.
Wherein, horizontal flue 20 includes the left side horizontal flue 21 and right side horizontal flue for being separated and being set side by side
22, back-end ductwork 30 includes the left side back-end ductwork 31 and right side back-end ductwork 32 for being separated and being set side by side.Left side tail portion
Flue 31 connect to form left flue with left side horizontal flue 21, and it is right that right side back-end ductwork 32 connect formation with right side horizontal flue 22
Flue, left flue and right flue constitute the twin flue structure of boiler.It is highly preferred that left flue and right flue etc. point setting and transversal
Area equation, however, the present invention is not limited thereto.
The present invention is independent twin flue arrangement form by separating boiler flue in a lateral direction, is on the one hand pot
Framework arrangement space is left in the middle part of furnace, it is possible thereby to which setting structure part is made in left flue and right flue region spaced intermediate
For the supporting point of top plate, thus, it is possible to realize the reduction of top plate size；It on the other hand, can be in left flue and right flue respectively
Flue gas is set and adjusts unit, and then adjusts separately the flue gas flow of left flue Yu right flue, convenient for control smoke temperature and Temperature Deviation.
Specifically, fuel and air burn in burner hearth 10 generation flue gas through 10 top of burner hearth and in the outlet of burner hearth 10
What punishment left and right two-way entered that transverse direction separates connect the left side formed with left side back-end ductwork 31 by left side horizontal flue 21
Flue and the right flue cocurrent formed is connect with right side back-end ductwork 32 by right side horizontal flue 22 goes out boiler.
Preferably, left flue and right flue it is mutually indepedent and it is intermediate there are certain distances, and in left flue and right flue
Between be provided with the boiler steel frame (not shown) for being used to support top plate, thus, it is possible to use size lesser top plate splicing, reduce
Top plate size reduces top plate manufacture shipping difficulty.Further, it is also possible to which fixed soot blower is arranged between left flue and right flue
(not shown), the ancillary measure as retractable soot blower.
Preferably, it is respectively set in left flue and right flue and is capable of the gas proportioning damper of separately adjustable aperture and (does not show
Out), it can adjust the flue gas flow of left flue and right flue, convenient for control boiler or so flue gas temperature deviation.
Wherein, left side back-end ductwork 31 and right side back-end ductwork 32 may each be single flue structure, be also possible to by partition wall
40 twin flue, three flues or the Multi-flue structures separated.
Figures 1 and 2 show that left side back-end ductwork 31 and right side back-end ductwork 32 are the structure of twin flue, specifically,
Left side back-end ductwork 31 includes flue 311 and left side tail portion rear pass 312 before the left side tail portion being separated by partition wall 40, right side
Back-end ductwork 32 includes flue 321 and right side tail portion rear pass 322 before the right side tail portion being separated by partition wall 40.
It can be province in addition, being disposed with corresponding low temperature heating surface in left side back-end ductwork 31 and right side back-end ductwork 32
Coal device, low-temperature reheater and/or low temperature superheater.
In conclusion the present invention is by being divided into left and right two solely in transverse direction for the later flue of boiler furnace outlet
Vertical flue, to be conducive to reduce top plate size simultaneously to reserve framework arrangement space in the middle part of boiler and being supported top plate
Reduce the manufacture difficulty of top plate；In addition, the gas baffle in two flues in left and right can be separately adjustable, left and right cigarette can be independently adjusted
The flue gas flow in road advantageously reduces boiler manufacture cost and improves convenient for smoke temperature and Temperature Deviation at left and right sides of control boiler
Boiler Stability.
The invention is not limited to specific embodiments above-mentioned.The present invention, which expands to, any in the present specification to be disclosed
New feature or any new combination, and disclose any new method or process the step of or any new combination.
Claims (7)
1. the boiler that a kind of power is arranged in the large capacity π type twin flue of 1300MW or more, which is characterized in that the boiler has
π type structure and the boiler include burner hearth and with the sequentially connected horizontal flue in outlet and back-end ductwork above burner hearth,
The back-end ductwork goes out mouth down setting；Wherein, horizontal flue and back-end ductwork separate in a lateral direction be independent it is double
Flue arrangement form, the horizontal flue include the left side horizontal flue and right side horizontal flue for being separated and being set side by side,
The back-end ductwork includes the left side back-end ductwork and right side back-end ductwork for being separated and being set side by side；The horizontal cigarette in left side
Road connect to form left flue with left side back-end ductwork, and the right side horizontal flue connect to form right flue with right side back-end ductwork,
The left flue is identical as the flow of flue gas direction in the twin flue structure of right flue composition boiler and left flue and right flue,
The boiler steel frame for being used to support top plate is provided between left flue and right flue.
2. the boiler of large capacity π type twin flue arrangement according to claim 1, which is characterized in that the left flue and the right side
Fixed soot blower is provided between flue.
3. the boiler of large capacity π type twin flue arrangement according to claim 1, which is characterized in that the left flue and the right side
The gas proportioning damper for capableing of separately adjustable aperture is respectively arranged in flue.
4. the boiler of large capacity π type twin flue arrangement according to claim 1, which is characterized in that left side tail portion cigarette
Road and right side back-end ductwork are single flue structure, or the twin flue or three flue structures that are separated by partition wall.
5. the boiler of large capacity π type twin flue arrangement according to claim 1, which is characterized in that left side tail portion cigarette
Low temperature heating surface is disposed in road and right side back-end ductwork.
6. the boiler of large capacity π type twin flue arrangement according to claim 5, which is characterized in that the low temperature heating surface
For economizer, low-temperature reheater and/or low temperature superheater.
7. the boiler of large capacity π type twin flue arrangement according to claim 1, which is characterized in that the left flue and the right side
Flue etc. point is arranged and cross-sectional area is equal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610927413.3A CN106439773B (en) | 2016-10-30 | 2016-10-30 | A kind of boiler of large capacity π type twin flue arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610927413.3A CN106439773B (en) | 2016-10-30 | 2016-10-30 | A kind of boiler of large capacity π type twin flue arrangement |
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| Publication Number | Publication Date |
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| CN106439773A CN106439773A (en) | 2017-02-22 |
| CN106439773B true CN106439773B (en) | 2019-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610927413.3A Active CN106439773B (en) | 2016-10-30 | 2016-10-30 | A kind of boiler of large capacity π type twin flue arrangement |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111736637A (en) * | 2020-05-20 | 2020-10-02 | 山东中实易通集团有限公司 | Steam temperature control system and method based on hearth temperature measurement |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201080505Y (en) * | 2007-08-17 | 2008-07-02 | 东北大学设计研究院（有限公司） | Large-sized aluminum cell upper gas collection smoke discharging structure |
| CN103438418A (en) * | 2013-08-08 | 2013-12-11 | 华能国际电力股份有限公司 | Double-reverse-U-shaped boiler |
| CN204372885U (en) * | 2014-10-31 | 2015-06-03 | 中国神华能源股份有限公司 | Boiler |
| CN206176331U (en) * | 2016-10-30 | 2017-05-17 | 东方电气集团东方锅炉股份有限公司 | Boiler that two flues of large capacity pi type were arranged |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI122627B (en) * | 2004-10-18 | 2012-04-30 | Andritz Oy | Boiler and method of boiler |
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2016
- 2016-10-30 CN CN201610927413.3A patent/CN106439773B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201080505Y (en) * | 2007-08-17 | 2008-07-02 | 东北大学设计研究院（有限公司） | Large-sized aluminum cell upper gas collection smoke discharging structure |
| CN103438418A (en) * | 2013-08-08 | 2013-12-11 | 华能国际电力股份有限公司 | Double-reverse-U-shaped boiler |
| CN204372885U (en) * | 2014-10-31 | 2015-06-03 | 中国神华能源股份有限公司 | Boiler |
| CN206176331U (en) * | 2016-10-30 | 2017-05-17 | 东方电气集团东方锅炉股份有限公司 | Boiler that two flues of large capacity pi type were arranged |
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| CN106439773A (en) | 2017-02-22 |
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