CN207334720U - A kind of smoke reverse-flow preventing device - Google Patents
A kind of smoke reverse-flow preventing device Download PDFInfo
- Publication number
- CN207334720U CN207334720U CN201721401838.7U CN201721401838U CN207334720U CN 207334720 U CN207334720 U CN 207334720U CN 201721401838 U CN201721401838 U CN 201721401838U CN 207334720 U CN207334720 U CN 207334720U
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- CN
- China
- Prior art keywords
- refeed line
- main pipe
- boiler
- preventing device
- wind main
- 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.)
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- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
The utility model provides a kind of smoke reverse-flow preventing device.Insulating layer including refeed line and parcel refeed line, further includes annular wind main pipe, is distributed multiple nozzles in the wind main pipe, the nozzle extends to the inner wall of the refeed line.When preventing ignition of the boiler and running in higher high-temperature flue gas anti-channeling to the refeed line of pressure in the burner hearth, avoid flue gas short-circuit, improve separator, so as to improve boiler thermal efficiency, ensure returning charge normally and boiler stable operation, improve circulating fluidized bed boiler igniting and run combustion stability.
Description
Technical field
It the utility model is related to a kind of device of anti-backfire or flue gas anti-channeling.
Background technology
It is to be made by U-typed returning charge valve under separator separation during regular circulation fluidized-bed combustion boiler revert system normal operation
The material back-conveying come is high to burner hearth circulating combustion, many typically no configuration returning charges of below 35t/h small-scale circulating fluidized bed boilers
Press roots blower, the high-pressure blast that U-typed returning charge valve is directly provided using primary air fan make goods fluid in dipleg and blow to
Burner hearth.And the wind pressure of primary air fan be generally not it is very high, at this time the higher high-temperature flue gas of pressure in the burner hearth may anti-channeling to returning
In expects pipe, local flue gas short circuit is caused, causes the reduction of splitter efficiency, returning charge is abnormal, and the thermal efficiency is low, boiler load
Do not carry, influence boiler normal operation.
The content of the invention
The purpose of this utility model is to provide a kind of smoke reverse-flow preventing device.
Implement the utility model the technical scheme adopted is that the insulating layer including refeed line and parcel refeed line, is also wrapped
Annular wind main pipe is included, is distributed multiple nozzles in the wind main pipe, the nozzle extends to the inner wall of the refeed line.
Further, annular wind main pipe entangles returning charge pipe outer wall.
Further, the both ends of annular wind main pipe connect insulating layer.
Further, the angle of the wind direction of the nozzle and refeed line center line is less than 60 degree.
The beneficial effects of the utility model are that the higher high-temperature flue gas of pressure in the burner hearth is anti-when preventing ignition of the boiler and operation
Alter to refeed line, avoid flue gas short-circuit, improve separator, so as to improve boiler thermal efficiency, ensure that returning charge is normal
And stable operation of the boiler, improve circulating fluidized bed boiler igniting and the combustion stability run.Available for the design of new boiler,
It can also be used for the transformation of old boiler.
Brief description of the drawings
Fig. 1 is the utility model structure diagram.
Fig. 2 is annular wind main pipe and the vertical view connection diagram of nozzle.
Embodiment
Referring to Fig. 1 and Fig. 2, including the insulating layer 1 of refeed line 2 and parcel refeed line, annular wind main pipe 3 is evenly distributed with multiple nozzles
5, nozzle 5 extends to the inner wall of refeed line 2.Annular wind main pipe 3 entangles 2 outer wall of refeed line.The both ends of annular wind main pipe 3 are insulations
Layer 1.The angle of 2 center line of wind direction and refeed line of nozzle 5 is about 30 degree.
Annular wind main pipe 3 is formed by welding with steel plate, and welding tip 5 in annular wind main pipe 3,5 export mixes annular of nozzle is stretched
Enter 2 inner wall of refeed line.Primary air fan high-pressure blast 4 enters annular wind main pipe 3, and by nozzle 5 spray into 2 inner wall of refeed line formed it is close
Feng Feng, so as to stop burner hearth high temperature and high pressure flue gas anti-channeling to separator.
Claims (4)
1. a kind of smoke reverse-flow preventing device, including the insulating layer of refeed line and parcel refeed line, it is characterised in that including annular wind
Main pipe, the interior multiple nozzles of distribution of annular wind main pipe, the nozzle extend to the inner wall of the refeed line.
2. a kind of smoke reverse-flow preventing device according to claim 1, it is characterised in that annular wind main pipe is entangled outside refeed line
Wall.
3. a kind of smoke reverse-flow preventing device according to claim 1 or 2, it is characterised in that the both ends of annular wind main pipe connect
Insulating layer.
4. a kind of smoke reverse-flow preventing device according to claim 1, it is characterised in that the wind direction and refeed line of the nozzle
The angle of center line is less than 60 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721401838.7U CN207334720U (en) | 2017-10-27 | 2017-10-27 | A kind of smoke reverse-flow preventing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721401838.7U CN207334720U (en) | 2017-10-27 | 2017-10-27 | A kind of smoke reverse-flow preventing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207334720U true CN207334720U (en) | 2018-05-08 |
Family
ID=62362949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721401838.7U Active CN207334720U (en) | 2017-10-27 | 2017-10-27 | A kind of smoke reverse-flow preventing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207334720U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114060802A (en) * | 2021-11-19 | 2022-02-18 | 无锡华光环保能源集团股份有限公司 | High-pressure air plugging method for processing material return interruption of circulating fluidized bed boiler |
-
2017
- 2017-10-27 CN CN201721401838.7U patent/CN207334720U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114060802A (en) * | 2021-11-19 | 2022-02-18 | 无锡华光环保能源集团股份有限公司 | High-pressure air plugging method for processing material return interruption of circulating fluidized bed boiler |
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