CN112128743A - Primary air uniform distribution device for water-cooled air chamber of CFB boiler - Google Patents
Primary air uniform distribution device for water-cooled air chamber of CFB boiler Download PDFInfo
- Publication number
- CN112128743A CN112128743A CN202010905764.0A CN202010905764A CN112128743A CN 112128743 A CN112128743 A CN 112128743A CN 202010905764 A CN202010905764 A CN 202010905764A CN 112128743 A CN112128743 A CN 112128743A
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- Prior art keywords
- water
- air
- air chamber
- cfb boiler
- primary air
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- 238000009827 uniform distribution Methods 0.000 title claims abstract description 17
- 238000001816 cooling Methods 0.000 claims abstract description 35
- 238000009826 distribution Methods 0.000 claims abstract description 15
- 230000001105 regulatory effect Effects 0.000 claims abstract description 10
- 229910001220 stainless steel Inorganic materials 0.000 claims description 18
- 239000010935 stainless steel Substances 0.000 claims description 18
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 239000011148 porous material Substances 0.000 abstract description 5
- 230000003014 reinforcing effect Effects 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- 230000003068 static effect Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C10/00—Fluidised bed combustion apparatus
- F23C10/18—Details; Accessories
- F23C10/20—Inlets for fluidisation air, e.g. grids; Bottoms
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention relates to a primary air uniform distribution device for a water-cooled air chamber of a CFB boiler. When the primary air of the circulating fluidized bed boiler adopts the air inlet mode at the bottom of the water cooling air chamber, most of the air intensively and directly blows the air distribution plate facing the air inlet area because the air vertically flows, the static pressure characteristic obtained in the area is large, and the air quantity in the area is directly large. The utility model provides a wind equipartition device once for CFB boiler water-cooled wind room, its constitution includes: the flow regulating device comprises a flow regulating pore plate (1), a fixing bracket (2) and a primary air channel (5), wherein the lower part of the fixing bracket is fixedly connected with the flow regulating pore plate, four corners of the fixing bracket are respectively and vertically connected with a supporting upright post (3), the bottom of each supporting upright post is provided with a group of reinforcing ribs (4) with the same structure, and the supporting upright posts and the reinforcing ribs are fixedly connected with the bottom of a water cooling air chamber (6). The invention is applied to the field of circulating fluidized bed boilers.
Description
The technical field is as follows:
the invention relates to a primary air uniform distribution device for a water-cooled air chamber of a CFB boiler.
Background art:
when the primary air of the circulating fluidized bed boiler adopts the air inlet mode from the bottom of the water cooling air chamber, most of the air flows vertically and is intensively and directly blown to the air distribution plate facing the air inlet area, the static pressure characteristic obtained in the area is large, the air quantity in the area is directly large, and the air distribution plate is uneven in air distribution, so that the operation of the boiler is seriously influenced.
The invention content is as follows:
the invention aims to provide a primary air uniform distribution device for a water cooling air chamber of a CFB boiler.
The above purpose is realized by the following technical scheme:
the utility model provides a wind equipartition device once for CFB boiler water-cooled wind room, its constitution includes: flow control orifice plate, mounting bracket and wind channel once, mounting bracket below with the perpendicular fixed connection of flow control orifice plate, four bights of mounting bracket be connected with a support post is perpendicular respectively, every the bottom of support post install the same enhancement fin of a set of structure, just the support post with the bottom fixed connection of enhancement fin and water-cooling plenum, the flow control orifice plate the mounting bracket the support post with the enhancement fin constitute a wind equipartition device of water-cooling plenum, the wind intake upper portion at water-cooling plenum bottom is installed to a wind equipartition device of water-cooling plenum.
The primary air uniform distribution device for the water-cooled air chamber of the CFB boiler is characterized in that the flow regulating pore plate is a square stainless steel plate, and circular holes with different numbers are formed in each area of the stainless steel plate.
The primary air uniform distribution device for the water-cooled air chamber of the CFB boiler is low in aperture ratio of the middle area of the stainless steel plate and high in aperture ratio of the peripheral area.
The primary air uniform distribution device for the water-cooling air chamber of the CFB boiler is characterized in that the bottom of the water-cooling air chamber is connected with a primary air channel, and the top of the water-cooling air chamber is connected with a hearth.
The primary air uniform distribution device for the water-cooling air chamber of the CFB boiler is characterized in that an air distribution plate is arranged above the water-cooling air chamber.
The invention has the beneficial effects that:
1. the invention solves the problem of uneven distribution of static pressure characteristics of each area of the air distribution plate when the primary air of the CFB boiler enters from the bottom of the water-cooling air chamber, and enables the air distribution plate to obtain more uniform air distribution effect.
The invention is mainly used for the CFB boiler with primary air entering from the bottom of the water-cooling air chamber, and the static pressure characteristic of the air distribution plate is adjusted to ensure that the air distribution is uniform. The stainless steel flow regulating orifice plate is a core component of the patent, and the air volume of each area is adjusted by controlling the aperture ratio of each area on the stainless steel plate, so that the air distribution is uniform.
3. The structure of the invention has the advantages of simple manufacture, practicality, reliability, good air quantity adjusting effect and the like.
The invention is composed of a stainless steel flow adjusting orifice plate, a fixed bracket, a supporting upright post and a strengthening fin, and is integrally arranged at the upper part of an air inlet at the bottom of a water-cooling air chamber. The flow regulating orifice plate is a square stainless steel plate, circular holes with different numbers are arranged in each area of the stainless steel plate, the aperture ratio of the middle area of the stainless steel plate is low, and the aperture ratio of the peripheral area of the stainless steel plate is high. The stainless steel flow regulating orifice plate is fixed on the fixed bracket, four corners of the fixed bracket are respectively connected with a supporting upright post, the bottom of the supporting upright post is provided with a reinforcing sheet, and the supporting upright post and the reinforcing sheet are welded at the bottom of the water-cooling air chamber.
Description of the drawings:
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a top view of fig. 1.
Fig. 3 is a schematic view of the mounting structure of fig. 1.
Fig. 4 is a bottom view of fig. 3.
In the figure: 1. the device comprises a flow regulating pore plate, 2, a fixing bracket, 3, a primary air channel, 4, a supporting upright post, 5, reinforcing ribs, 6, a water cooling air chamber, 7, a hearth, 8 and an air distribution plate.
The specific implementation mode is as follows:
example 1:
the utility model provides a wind equipartition device once for CFB boiler water-cooled wind room, its constitution includes: flow control orifice plate 1, mounting bracket 2 and wind channel 5 once, mounting bracket below with the perpendicular fixed connection of flow control orifice plate, four bights of mounting bracket be connected with a support post 3 is perpendicular respectively, every the bottom of support post install the same enhancement fin 4 of a set of structure, just the support post with the bottom fixed connection of enhancement fin and water-cooling plenum 6, the flow control orifice plate the mounting bracket the support post with the enhancement fin constitute a wind equipartition device of water-cooling plenum, a wind equipartition device of water-cooling plenum install the air intake upper portion in water-cooling plenum bottom.
Example 2:
according to the primary air uniform distribution device for the water-cooling air chamber of the CFB boiler in the embodiment 1, the flow regulating pore plate is a square stainless steel plate, and circular holes with different numbers are formed in all areas of the stainless steel plate.
Example 3:
according to the primary air uniform distribution device for the water-cooled air chamber of the CFB boiler in the embodiment 1 or 2, the aperture ratio of the middle area of the stainless steel plate is low, and the aperture ratio of the peripheral area of the stainless steel plate is high.
Example 4:
according to the primary air uniform distribution device for the water-cooling air chamber of the CFB boiler in the embodiment 1, 2 or 3, the bottom of the water-cooling air chamber is connected with a primary air channel, and the top of the water-cooling air chamber is connected with a hearth 7.
Example 5:
according to the primary air uniform distribution device for the water-cooling air chamber of the CFB boiler in the embodiment 1, 2, 3 or 4, the air distribution plate 8 is arranged above the water-cooling air chamber.
Claims (5)
1. The utility model provides a wind equipartition device once for CFB boiler water-cooled wind room, its constitution includes: flow control orifice plate, fixed bracket and wind channel once, characterized by: fixing bracket below with the perpendicular fixed connection of flow control orifice plate, four bights of fixing bracket be connected perpendicularly with a support post respectively, every the bottom of support post install the same enhancement fin of a set of structure, just the support post with the bottom fixed connection of enhancement fin and water-cooling plenum, flow control orifice plate fixing bracket the support post with the enhancement fin constitute the once wind equipartition device of water-cooling plenum, the once wind equipartition device of water-cooling plenum install the air intake upper portion in water-cooling plenum bottom.
2. The primary air uniform distribution device for the water-cooled air chamber of the CFB boiler as claimed in claim 1, which is characterized in that: the flow regulating orifice plate is a square stainless steel plate, and circular holes with different numbers are formed in each area of the stainless steel plate.
3. The primary air uniform distribution device for the water-cooled air chamber of the CFB boiler as claimed in claim 2, which is characterized in that: the stainless steel plate has low opening rate in the middle area and high opening rate in the peripheral area.
4. The primary air uniform distribution device for the water-cooled air chamber of the CFB boiler as claimed in claim 3, which is characterized in that: the bottom of the water-cooling air chamber is connected with the primary air channel, and the top of the water-cooling air chamber is connected with the hearth.
5. The primary air uniform distribution device for the water-cooled air chamber of the CFB boiler as claimed in claim 4, which is characterized in that: and an air distribution plate is arranged above the water-cooling air chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010905764.0A CN112128743A (en) | 2020-09-01 | 2020-09-01 | Primary air uniform distribution device for water-cooled air chamber of CFB boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010905764.0A CN112128743A (en) | 2020-09-01 | 2020-09-01 | Primary air uniform distribution device for water-cooled air chamber of CFB boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112128743A true CN112128743A (en) | 2020-12-25 |
Family
ID=73847761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010905764.0A Pending CN112128743A (en) | 2020-09-01 | 2020-09-01 | Primary air uniform distribution device for water-cooled air chamber of CFB boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112128743A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202532461U (en) * | 2012-03-16 | 2012-11-14 | 华西能源工业股份有限公司 | Air distribution device for circulating fluidized bed boiler |
| WO2016161821A1 (en) * | 2015-04-08 | 2016-10-13 | 东方电气集团东方锅炉股份有限公司 | Circulating fluidized bed oxygen-enriched combustion apparatus and operation method therefor |
| CN207936056U (en) * | 2018-03-19 | 2018-10-02 | 杭州锅炉集团股份有限公司 | Circulating fluidized bed boiler First air Even air distribution device |
| CN209341244U (en) * | 2018-12-12 | 2019-09-03 | 刘家君 | A kind of blast cap of circulating fluidized bed |
-
2020
- 2020-09-01 CN CN202010905764.0A patent/CN112128743A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202532461U (en) * | 2012-03-16 | 2012-11-14 | 华西能源工业股份有限公司 | Air distribution device for circulating fluidized bed boiler |
| WO2016161821A1 (en) * | 2015-04-08 | 2016-10-13 | 东方电气集团东方锅炉股份有限公司 | Circulating fluidized bed oxygen-enriched combustion apparatus and operation method therefor |
| CN207936056U (en) * | 2018-03-19 | 2018-10-02 | 杭州锅炉集团股份有限公司 | Circulating fluidized bed boiler First air Even air distribution device |
| CN209341244U (en) * | 2018-12-12 | 2019-09-03 | 刘家君 | A kind of blast cap of circulating fluidized bed |
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