CN102809149A - Gas swirling cap for boiler, and boiler of gas swirling cap - Google Patents
Gas swirling cap for boiler, and boiler of gas swirling cap Download PDFInfo
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- CN102809149A CN102809149A CN2012102808748A CN201210280874A CN102809149A CN 102809149 A CN102809149 A CN 102809149A CN 2012102808748 A CN2012102808748 A CN 2012102808748A CN 201210280874 A CN201210280874 A CN 201210280874A CN 102809149 A CN102809149 A CN 102809149A
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- blast cap
- boiler
- cap
- cyclone
- cyclone blast
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Abstract
The invention relates to a gas swirling cap for a boiler and a boiler of the gas swirling cap. According to the gas swirling cap for the boiler, an airflow channel for enabling the gas to form swirling eddy after running through the gas swirling cap is arranged on the gas swirling cap. The boiler is provided with the gas swirling cap on the bottom air inlet; and the gas swirling cap is provided with an airflow channel for enabling the gas to form swirling eddy after running through the gas swirling cap. The gas swirling cap can greatly enhance the air inflow swirling, enhance the burning efficiency of the coal and provide good effects to fault coal, coal gangue, and the like.
Description
Technical field
The present invention relates to a kind of boiler with the cyclone blast cap and adopt the boiler of this cyclone blast cap.
Background technology
Blast cap is the vitals of CFBB, fluidisation whether evenly, can decrease the efficiency of combustion that will directly influence boiler by heat resistant and wear resistant, more determining boiler whether can be safely, economical, stably move.Domestic CFB Wind cap for boiler has multiple pattern, and its shape is that the comparatively of fundamental mode see that the problem that reflects in service is also more more with the mushroom.For example blast cap burns out and heavy wear easily, and air outlet often occurs that stifled slag causes that fluidisation is uneven, a large amount of ashes etc. that leak in the air compartment, problem like that cause the fluid bed cycle of operation short, the cost of overhaul is high.Therefore, appropriate design with select fluidized bed hood for use, be to guarantee that CFB boiler fluidized bed combustion is stable, safety economy is reliable and the key of efficient operation.At present, everybody improves in the individual performance to blast cap, and the cap structure of integral body has also been done a large amount of research; For example: choose reasonable outlet wind speed; The aperture wind speed is big more, and air-flow is just strong more to the disturbance of bed bottom particle, helps oarse-grained fluidisation more.But blast cap aperture wind speed is excessive, and the blast cap resistance increases, and required fan pressure head is increased; Otherwise the aperture wind speed is low excessively, occurs the air distribution inequality easily, the coarse granule deposition, and bottom fluidization is bad, causes cold slag phosphorus content to increase, and especially when load reduces, often can not keep stable operation, causes the slagging scorification fire extinguishing.For example the blast cap layout can adopt along row, stagger arrangement or equilateral triangle layout again; Pitch is identical with original layout as far as possible or become integral multiple, is principle not change position, original air distribution plate hole, when not satisfying minimum safe distance; Should in the resistance allowed band, adjust little hole area and exit flow momentum; Change the blast cap external diameter in case of necessity increasing clear spacing, or the like improve and all make the performance of boiler fluidized bed hood obtain large increase, the utilization ratio of blast cap has also increased much.But we also notice, existing blast cap, and the geometric center lines of gas channel all is to coincide with the center that belongs to the plane; Want to increase and stream; Be the selection of pore size exactly, and this mode is for improving coal-fired efficiency of combustion, it is limited to increase the effect of streaming.Particularly for thinking colm, gangue etc. adopt the boiler combustion efficiency of traditional blast cap just not enough as comburant the time.
Summary of the invention
Not high in order to solve the efficiency of fire coal that exists in the prior art; Little problem is streamed in air inlet; The present invention provides a kind of novel cyclone blast cap and the boiler that adopts this cyclone blast cap, adopts cyclone blast cap of the present invention, can increase air inlet greatly and stream; Improve coal-fired efficiency of combustion, good effect is all arranged for colm and gangue etc.
The present invention adopts following technical scheme to realize:
A kind of boiler is used the cyclone blast cap, and the gas channel that makes gas pass through to form behind the cyclone blast cap swirling eddy is arranged on the wherein said cyclone blast cap.
Above-mentioned boiler is used the cyclone blast cap, and wherein said gas channel does not overlap with orthographic projection at cyclone blast cap inwall opening in the orthographic projection of cyclone blast cap opening of external wall.
Above-mentioned boiler is used the cyclone blast cap, and wherein said gas channel has two at least.
Above-mentioned boiler is used the cyclone blast cap, and wherein all gas channels are consistent in the direction that the orthographic projection of cyclone blast cap opening of external wall and orthographic projection at cyclone blast cap inwall opening depart from.
Above-mentioned boiler is used the cyclone blast cap, and wherein all gas channels are consistent in the angle that the orthographic projection of cyclone blast cap opening of external wall and orthographic projection at cyclone blast cap inwall opening depart from.
Above-mentioned boiler is used the cyclone blast cap, and wherein gas channel is positioned on the sidewall of cyclone blast cap.
A kind of boiler wherein is equipped with the cyclone blast cap in the bottom air inlet mouth position of boiler, and the gas channel that makes gas pass through to form behind the cyclone blast cap swirling eddy is arranged on the described cyclone blast cap.
Adopt cyclone blast cap of the present invention and boiler thereof, following advantage arranged:
1, make the air-flow that gets into boiler produce swirling eddy after through the cyclone blast cap, swirling eddy is disturbance bed bottom significantly, makes the disturbance of particle stronger, helps oarse-grained fluidisation.
2, the contact surface that has increased coal particle and air amasss, and makes burning more abundant.
3, for the boiler that uses colm to burn, also can reach certain heat release power.
Description of drawings
1, Fig. 1 is embodiment 1 a described cyclone blast cap cutaway view in the cyclone blast cap of the present invention;
2, Fig. 2 is embodiment 1 a described cyclone blast cap A-A cutaway view in the cyclone blast cap of the present invention;
3, Fig. 3 is the structural representation of a kind of boiler of the present invention.
The specific embodiment
Embodiment 1
As shown in Figure 1, the cyclone blast cap 7 that we adopt forms gas channel at the side-wall hole of blast cap 7, and gas channel does not overlap in the orthographic projection of the orthographic projection of the opening of external wall of cyclone blast cap 7 with wall opening in cyclone blast cap 7, and offset direction is consistent with angle.
As shown in Figure 3, furnace bin 1 links to each other with feeder 2, and feeder 2 rotates with coal unloading tube 3 and contacts; Coal unloading tube 3 enters in the body of heater, is provided with in the body of heater to evaporate heating surface 4, and body of heater one side has exhanst gas outlet 5; Siege is provided with air distribution plate 6 and cyclonic wind cap 7, has scum pipe 8 at the bottom of the siege.
Claims (7)
1. a boiler is used the cyclone blast cap, it is characterized in that having on the described cyclone blast cap gas channel that makes gas pass through to form behind the cyclone blast cap swirling eddy.
2. boiler as claimed in claim 1 is used the cyclone blast cap, it is characterized in that described gas channel does not overlap with orthographic projection at cyclone blast cap inwall opening in the orthographic projection of cyclone blast cap opening of external wall.
3. boiler as claimed in claim 1 is used the cyclone blast cap, it is characterized in that described gas channel has two at least.
4. boiler as claimed in claim 3 is used the cyclone blast cap, it is characterized in that all gas channels are consistent in the direction that the orthographic projection of cyclone blast cap opening of external wall and orthographic projection at cyclone blast cap inwall opening depart from.
5. boiler as claimed in claim 4 is used the cyclone blast cap, it is characterized in that all gas channels are consistent in the angle that the orthographic projection of cyclone blast cap opening of external wall and orthographic projection at cyclone blast cap inwall opening depart from.
6. boiler as claimed in claim 1 is used the cyclone blast cap, it is characterized in that gas channel is positioned on the sidewall of cyclone blast cap.
7. a boiler is characterized in that in the bottom air inlet mouth position of boiler the cyclone blast cap being installed, and the gas channel that makes gas pass through to form behind the cyclone blast cap swirling eddy is arranged on the described cyclone blast cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102808748A CN102809149A (en) | 2012-08-08 | 2012-08-08 | Gas swirling cap for boiler, and boiler of gas swirling cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102808748A CN102809149A (en) | 2012-08-08 | 2012-08-08 | Gas swirling cap for boiler, and boiler of gas swirling cap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102809149A true CN102809149A (en) | 2012-12-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102808748A Pending CN102809149A (en) | 2012-08-08 | 2012-08-08 | Gas swirling cap for boiler, and boiler of gas swirling cap |
Country Status (1)
| Country | Link |
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| CN (1) | CN102809149A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103994427A (en) * | 2014-01-23 | 2014-08-20 | 浙江富春江环保热电股份有限公司 | Low-nitrogen combustion blast cap of circulating fluidized bed boiler |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101251252A (en) * | 2008-04-17 | 2008-08-27 | 无锡太湖锅炉有限公司 | Swirling eddy defluvium-proof kirtle |
| CN102563629A (en) * | 2010-12-15 | 2012-07-11 | 中国科学院工程热物理研究所 | Spiral-flow type built-in cylindrical blast cap |
-
2012
- 2012-08-08 CN CN2012102808748A patent/CN102809149A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101251252A (en) * | 2008-04-17 | 2008-08-27 | 无锡太湖锅炉有限公司 | Swirling eddy defluvium-proof kirtle |
| CN102563629A (en) * | 2010-12-15 | 2012-07-11 | 中国科学院工程热物理研究所 | Spiral-flow type built-in cylindrical blast cap |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103994427A (en) * | 2014-01-23 | 2014-08-20 | 浙江富春江环保热电股份有限公司 | Low-nitrogen combustion blast cap of circulating fluidized bed boiler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wu Weiheng Inventor after: Luo Dajun Inventor before: Wu Weiheng Inventor before: Luo Dajun |
|
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20121205 |