CN217503718U - Flow guiding device capable of enabling flow velocity of flue gas to be distributed uniformly - Google Patents
Flow guiding device capable of enabling flow velocity of flue gas to be distributed uniformly Download PDFInfo
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- CN217503718U CN217503718U CN202220186053.7U CN202220186053U CN217503718U CN 217503718 U CN217503718 U CN 217503718U CN 202220186053 U CN202220186053 U CN 202220186053U CN 217503718 U CN217503718 U CN 217503718U
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Abstract
The utility model discloses a can make even guiding device of flue gas velocity distribution relates to power plant boiler technical field, and the problem of solution or the purpose that reaches provide one kind can make that the resistance of flue gas wind system reduces, the flow field is relatively even, investment cost low, slow down the even guiding device of flue gas velocity distribution of advantages such as wearing and tearing. The rectangular flue gas duct comprises a rectangular flue gas duct turning section positioned at the joint of the vertical section of the rectangular flue gas duct and the horizontal section of the rectangular flue gas duct; and the steel structure is arranged at the position where the vertical section of the rectangular smoke and air channel is close to the inner angle of the bent section of the rectangular smoke and air channel. The first guide plate is positioned at the inner angle of the turning section of the rectangular flue duct; and the second guide plate is arranged in the middle of the inside of the turning section of the rectangular flue duct.
Description
Technical Field
The utility model relates to a power plant boiler technical field especially relates to a can make even guiding device of flue gas velocity of flow distribution.
Background
The flue duct is an important part for conveying air and flue gas in a flue-air system of a power station boiler. The newly-built unit generally adopts circular cigarette wind channel, and the analysis is from the technical characteristics alone, and circular cigarette wind channel has many advantages that rectangle cigarette wind channel can not reach, as long as arrange reasonable solution, the superiority in circular cigarette wind channel will obtain full play. The rectangular flue duct has the advantages that the section length ratio can be adjusted at will, the arrangement is convenient in the limited space of the power station, and the arrangement of the circular flue duct is difficult, so that the rectangular duct bodies are adopted in the flue duct of the power station for a long time, and meanwhile, elbows are mostly elbow bends, as shown in figure 1. Therefore, the problems of large resistance of a smoke air duct, uneven flow velocity of smoke and serious abrasion caused by overhigh local flow velocity are easily caused.
With the continuous deep excavation of the coal-electric machine set for saving energy and reducing consumption, the research for reducing the resistance of the smoke and wind system is more and more. How to reduce the flue resistance is one of means for reducing the power consumption of the power station boiler.
The transformation of the square flue into the round flue is one item, as shown in fig. 2, but the transformation cost is too large, the input-output ratio is too low, and the transformation cannot be widely popularized. The increase of the guide plate inside the flue duct is a relatively economic modification mode. The flue duct guide plate is arranged inside the flue duct and is often positioned at a pipe turning part, so that the functions of distributing media and reducing fluid resistance loss are achieved.
However, some special parts, such as the parts which are limited by the steel structure and can not be greatly modified, are provided. If the change is larger, the investment is larger, and the parts such as the rigid beam and the like need to be changed. How to have larger output under the condition of smaller input. A portion of the flow area may be sacrificed and instead a better flow field structure may be obtained.
Disclosure of Invention
In view of this, the utility model provides a can make even guiding device of flue gas velocity of flow distribution, main aim at provide one kind can make flue gas wind system resistance reduce, the flow field is relatively even, investment cost is low, slow down the even guiding device of flue gas velocity of flow distribution of advantages such as wearing and tearing.
In order to achieve the above object, the utility model mainly provides the following technical scheme:
the embodiment of the utility model provides a can make even guiding device of flue gas velocity distribution. It includes:
the rectangular flue gas duct comprises a rectangular flue gas duct turning section positioned at the connecting part of the vertical section of the rectangular flue gas duct and the horizontal section of the rectangular flue gas duct;
and the steel structure is arranged at the position where the vertical section of the rectangular smoke and air channel is close to the inner angle of the bent section of the rectangular smoke and air channel.
The first guide plate is positioned at the inner angle of the turning section of the rectangular flue duct;
and the second guide plate is arranged in the middle of the inside of the turning section of the rectangular flue duct.
As mentioned above, the first guide plate includes a small-bending-radius guide plate connected to the vertical section of the rectangular flue duct and a straight guide plate connected to the small-bending-radius guide plate and connected to the horizontal section of the rectangular flue duct.
As previously described, the small bend radius baffle is a 90 ° small bend radius baffle.
As mentioned above, the size of the bending radius of the small-bending-radius guide plate is one tenth of the height of the horizontal section of the rectangular flue duct.
As previously mentioned, the second baffle is a curved baffle.
Borrow by above-mentioned technical scheme, the utility model discloses a can make even guiding device of flue gas velocity of flow distribution have following advantage at least:
the flow guiding device capable of uniformly distributing the flow velocity of the flue gas is provided with the first flow guiding plate which is positioned at the inner angle of the turning section of the rectangular flue gas duct; the second guide plate, its intermediate position of installing in rectangle cigarette wind channel turn section inside to set up first guide plate include with little bend radius guide plate that rectangle cigarette wind channel vertical section is connected and with the straight guide plate that little bend radius guide plate is connected and is connected with rectangle cigarette wind channel horizontal segment reduces the through flow area in rectangle cigarette wind channel, sets up less guide plate, can make cigarette wind system resistance reduce, and the flow field is relatively even, and advantages such as wearing and tearing alleviate can also reach less investment, obtain the effect of great income, and the utility model discloses need not to change the steel construction, the change volume is little, and the investment recovery phase is short, adopts the characteristics of minimum input, great output, is the highest technical transformation scheme of input-output ratio.
The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings.
Drawings
FIG. 1 is a schematic view of a rectangular flue duct structure;
FIG. 2 is a schematic structural diagram of a rectangular flue gas duct turning section of a rectangular flue gas duct transformed into a round-chamfered rectangular flue gas duct turning section in the prior art;
fig. 3 is a schematic structural view of the flow guiding device for making the flow velocity distribution of the flue gas uniform.
Detailed Description
To further explain the technical means and effects of the present invention adopted to achieve the intended purpose, the following detailed description of the embodiments, structures, features and effects according to the present invention will be made with reference to the accompanying drawings and preferred embodiments. In the figure, the direction of the arrows is the direction of the flue gas flow.
As shown in fig. 3, an embodiment of the present invention provides a flow guiding device capable of making a flow velocity distribution of flue gas uniform, which includes: rectangle flue 1, steel construction 2, first guide plate 3 and second guide plate 4.
As shown in fig. 3, the rectangular flue duct 1 includes a rectangular flue duct turning section 13 located at a connection of the rectangular flue duct vertical section 11 and the rectangular flue duct horizontal section 12. And the steel structure 2 is arranged at the position of the rectangular flue duct vertical section 11 close to the inner angle of the rectangular flue duct turning section 13. First guide plate 3, it is located the internal angle department of rectangle cigarette wind channel turn section 13, it is specific, first guide plate 3 include with little bend radius guide plate 31 that rectangle cigarette wind channel vertical section 11 is connected and the straight plate guide plate 32 of being connected with little bend radius guide plate 31 and being connected with rectangle cigarette wind channel horizontal segment 12 the utility model discloses in, little bend radius guide plate 31 adopts 90 little bend radius guide plates, and little bend radius guide plate 31's bend radius's size is the ten minutes of rectangle cigarette wind channel horizontal segment 12 height-size. Second guide plate 4, it is installed the inside intermediate position of rectangle cigarette wind channel turn section 13 the utility model discloses in, second guide plate 4 is crooked guide plate.
The flow guiding device capable of uniformly distributing the flow velocity of the flue gas provided by the embodiment of the utility model is provided with the first flow guiding plate which is positioned at the inner angle of the turning section of the rectangular flue gas duct; the second guide plate, its intermediate position of installing in rectangle cigarette wind channel turn section inside to set up first guide plate include with little bend radius guide plate that rectangle cigarette wind channel vertical section is connected and with the straight guide plate that little bend radius guide plate is connected and is connected with rectangle cigarette wind channel horizontal segment reduces the through flow area in rectangle cigarette wind channel, sets up less guide plate, can make cigarette wind system resistance reduce, and the flow field is relatively even, and advantages such as wearing and tearing alleviate can also reach less investment, obtain the effect of great income, and the utility model discloses need not to change the steel construction, the change volume is little, and the investment recovery phase is short, adopts the characteristics of minimum input, great output, is the highest technical transformation scheme of input-output ratio.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention are all within the scope of the technical solution of the present invention.
Claims (4)
1. A can make even guiding device of flue gas velocity distribution which characterized in that: it comprises the following steps:
the rectangular flue gas duct comprises a rectangular flue gas duct turning section positioned at the connecting part of the vertical section of the rectangular flue gas duct and the horizontal section of the rectangular flue gas duct;
the steel structure is arranged at the position, close to the inner angle of the bent section of the rectangular flue gas duct, of the vertical section of the rectangular flue gas duct;
the first guide plate is positioned at the inner angle of the turning section of the rectangular flue duct;
and the second guide plate is arranged in the middle of the inside of the turning section of the rectangular flue duct.
2. The flow guide device for making the flow velocity distribution of the flue gas uniform is characterized in that,
the first guide plate comprises a guide plate with small bending radius connected with the vertical section of the rectangular flue gas duct and a straight guide plate connected with the guide plate with small bending radius and connected with the horizontal section of the rectangular flue gas duct;
the size of the bending radius of the small-bending-radius guide plate is one tenth of the height of the horizontal section of the rectangular flue duct.
3. The flow guide device capable of making the flow velocity distribution of the flue gas uniform according to claim 2,
the small-bending-radius guide plate is a 90-degree small-bending-radius guide plate.
4. The flow guide device for making the flow velocity distribution of the flue gas uniform is characterized in that,
the second baffle is a curved baffle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220186053.7U CN217503718U (en) | 2022-01-24 | 2022-01-24 | Flow guiding device capable of enabling flow velocity of flue gas to be distributed uniformly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220186053.7U CN217503718U (en) | 2022-01-24 | 2022-01-24 | Flow guiding device capable of enabling flow velocity of flue gas to be distributed uniformly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217503718U true CN217503718U (en) | 2022-09-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202220186053.7U Active CN217503718U (en) | 2022-01-24 | 2022-01-24 | Flow guiding device capable of enabling flow velocity of flue gas to be distributed uniformly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217503718U (en) |
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2022
- 2022-01-24 CN CN202220186053.7U patent/CN217503718U/en active Active
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