CN202018036U - Re-injection device for circulating fluidized bed boiler - Google Patents
Re-injection device for circulating fluidized bed boiler Download PDFInfo
- Publication number
- CN202018036U CN202018036U CN2010206956020U CN201020695602U CN202018036U CN 202018036 U CN202018036 U CN 202018036U CN 2010206956020 U CN2010206956020 U CN 2010206956020U CN 201020695602 U CN201020695602 U CN 201020695602U CN 202018036 U CN202018036 U CN 202018036U
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- cavity
- partition wall
- valve body
- chamber
- standpipe
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- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
The utility model discloses a re-injection device for a circulating fluidized bed boiler, which comprises a stand pipe and a re-feeding pipe, wherein, a valve body is arranged between the stand pipe and the re-feeding pipe; a valve cavity in the valve body comprises a first cavity and a second cavity; the first cavity is connected with the stand pipe; the second cavity is connected with the re-feeding pipe; a partition wall is arranged inside the valve body and positioned between the first cavity and the second cavity; the first cavity and the second cavity are separated incompletely by the partition wall; a first air room and a second air room are respectively formed at the lower parts of the first cavity and the second cavity; and the partition wall is movably connected with the valve body. The partition wall adopts a detachable mobile structure, is convenient to install and dismount, greatly prolongs the service life, and reduces the cleaning time and intensity.
Description
Technical field
The utility model relates to a kind of boiler plant, relates to a kind of CFBB loop back device specifically.
Background technology
The basic function of material returning device is the high-temperature solid particle that cyclone separator is separated, and by the isobaric air compartment air-supply of material returning device bottom, sends high-temperature material back in combustion chamber second-time burning continuously and stably.U type valve is the equipment that connects standpipe and refeed line, and fixed size (according to boiler design time determine), and purpose is to guarantee that recycle stock is stablized to be conveyed into burner hearth, prevents the flue gas into separator of playing a reversed role simultaneously.Its principle is exactly the goods fluid that the fluidization air sent into from the bottom is collected separator, under the effect of standpipe and burner hearth pressure reduction material is sent into burner hearth.When outer circulation weakened, standpipe and burner hearth pressure reduction were little, and the returning charge amount reduces, the effect with self-balancing.Height of materials changes and reduces (promptly keeping certain controlling level) in the standpipe, prevents the flue gas anti-channeling.
The original U type valve of CFBB is a stationary structure, owing to require constantly to open stove and banking fire in the actual production, after the long-term production operation, U type valve damages or wearing and tearing cause U type valve size to change, thereby cause that returning charge is smooth, coking, boiler can't normally move, and in the blowing out scale removal process, must knock out original U type valve brick, build again behind for clearance the finishing.
The utility model content
The technical problems to be solved in the utility model provides a kind of CFBB loop back device, and the easy cleaning maintenance is to overcome the defective that exists in the prior art.
The utility model is by the following technical solutions:
A kind of CFBB loop back device, comprise standpipe, refeed line, valve body is located between standpipe and the refeed line, described valve body internal valve cavity comprises first chamber that is connected with standpipe, with second chamber that is connected with refeed line, establishes partition wall in the valve body, be between first, second chamber, described partition wall is not exclusively separated first, second chamber, and first, second below, chamber is respectively equipped with first, second air compartment, and described partition wall and valve body flexibly connect.
Preferably, described valve pocket is a U-shaped, establishes the corresponding through hole that cooperates with partition wall on the described valve body, and partition wall inserts in the corresponding through hole.
Preferably, described partition wall is a blocks, comprises stainless steel casing, establishes phosphate refractory concrete in reaching and fills.
Because the partition wall in the utility model is dismountable bascule, makes things convenient for installing/dismounting, prolongs its service life greatly and reduce clearance time and intensity.
Description of drawings
The schematic diagram of the CFBB loop back device that Fig. 1 relates to for the utility model, the arrow among Fig. 1 represents that material enters the path direction of material returning device.
The schematic diagram of U-shaped valve pocket in the CFBB loop back device that Fig. 2 relates to for the utility model, promptly among Fig. 1 A-A to schematic diagram.
The schematic diagram of the CFBB loop back device mid-board that Fig. 3 relates to for the utility model.
The specific embodiment
See Fig. 1, the cross sectional view of the CFBB loop back device that relates to for the utility model.As known in the figure, material returning device comprises charging aperture 7, standpipe 1 and refeed line 5, and valve body is located between standpipe 1 and the refeed line 5.The material that charging aperture 7 receives from cyclone separator.Charging aperture 7 connects standpipe 1, and material enters valve body from standpipe 1, by passing through refeed line 5 behind the valve body again, finally enters burner hearth.Valve body internal valve cavity 2 comprises first chamber 21 that is connected with standpipe 1, with second chamber 22 that is connected with refeed line 5, establishes partition wall 6 in the valve body, be between first, second chamber 21,22, described partition wall 6 is not exclusively separated first, second chamber 21,22, so valve pocket 2 is a U-shaped, sees Fig. 1.It is independent that first, second 21,22 belows, chamber are respectively equipped with 3,4, two air compartments of first, second air compartment, all to valve pocket 2 air-supplies, but the air output difference.Material is in the decline state in first chamber 21, and is in ascent stage in second chamber 22, realizes self-separation device flowing to burner hearth under the help of air, different air outputs can be regulated load, and avoid the anti-channeling of material decline stage, the side in first chamber 21 is provided with garbage collection mouth 8.Described partition wall 6 flexibly connects with valve body, promptly establishes the corresponding through hole that cooperates with partition wall 6 on the valve body, and partition wall 6 inserts in the corresponding through hole, sees Fig. 2.Described partition wall 6 is a blocks, comprises stainless steel casing, fills out phosphate refractory concrete in reaching, and sees Fig. 3.The not fragile distortion of this body of wall, and be dismountable bascule, make things convenient for installing/dismounting, prolong its service life greatly and reduce clearance time and intensity.
Claims (3)
1. CFBB loop back device, comprise standpipe (1), refeed line (5), valve body is located between standpipe (1) and the refeed line (5), described valve body internal valve cavity (2) comprises first chamber (21) that is connected with standpipe (1), with second chamber (22) that is connected with refeed line (5), establish partition wall (6) in the valve body, be in first, second chamber (21,22) between, described partition wall (6) not exclusively separates first, second chamber (21,22), first, second chamber (21,22) below is respectively equipped with first, second air compartment (3,4), it is characterized in that: described partition wall (6) flexibly connects with valve body.
2. CFBB loop back device according to claim 1 is characterized in that: described valve pocket (2) is a U-shaped, establishes the corresponding through hole that cooperates with partition wall (6) on the described valve body, and partition wall (6) inserts in the corresponding through hole.
3. CFBB loop back device according to claim 2 is characterized in that: described partition wall (6) is a blocks, comprises stainless steel casing, establishes phosphate refractory concrete in reaching and fills.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206956020U CN202018036U (en) | 2010-12-31 | 2010-12-31 | Re-injection device for circulating fluidized bed boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206956020U CN202018036U (en) | 2010-12-31 | 2010-12-31 | Re-injection device for circulating fluidized bed boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202018036U true CN202018036U (en) | 2011-10-26 |
Family
ID=44811706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206956020U Expired - Lifetime CN202018036U (en) | 2010-12-31 | 2010-12-31 | Re-injection device for circulating fluidized bed boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202018036U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102563633A (en) * | 2010-12-31 | 2012-07-11 | 贵州中烟工业有限责任公司 | Material return device for circulating fluidized bed boiler |
-
2010
- 2010-12-31 CN CN2010206956020U patent/CN202018036U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102563633A (en) * | 2010-12-31 | 2012-07-11 | 贵州中烟工业有限责任公司 | Material return device for circulating fluidized bed boiler |
| CN102563633B (en) * | 2010-12-31 | 2015-07-01 | 贵州中烟工业有限责任公司 | Material return device for circulating fluidized bed boiler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111026 |
|
| CX01 | Expiry of patent term |