CN216408944U - Primary air chamber structure of circulating fluidized bed boiler with air inlet at two sides and guide plates - Google Patents
Primary air chamber structure of circulating fluidized bed boiler with air inlet at two sides and guide plates Download PDFInfo
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- CN216408944U CN216408944U CN202122668199.3U CN202122668199U CN216408944U CN 216408944 U CN216408944 U CN 216408944U CN 202122668199 U CN202122668199 U CN 202122668199U CN 216408944 U CN216408944 U CN 216408944U
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Abstract
The utility model belongs to the technical field of boiler primary air chamber, in particular to a primary air chamber structure of a circulating fluidized bed boiler with air inlet at two sides and a guide plate, which comprises: the primary air chamber, the primary air inlet, the air distribution device, the horizontal guide plate, the arc-shaped guide plate, the rotating shaft and the control device are arranged on two sides of the primary air chamber, the air distribution device is arranged on the top of the primary air chamber, the horizontal guide plate is arranged in the primary air chamber, the rotating shaft is arranged in the primary air chamber, the arc-shaped guide plate is arranged in the primary air chamber, the rotating shaft is connected to the bottom of the arc-shaped guide plate, the control device controls the arc-shaped guide plate through the rotating shaft, the structure is simple, the air distribution uniformity of the air distribution plate can be improved through the guide plate, different angles of the arc-shaped guide plate are controlled through the rotating shaft, uniform air distribution is carried out on different air quantities under different operation loads, and a series of problems of poor combustion quality of a hearth, coking, blockage of an air cap, slag leakage, low desulfurization efficiency and the like caused by uneven air distribution are solved.
Description
Technical Field
The utility model relates to the technical field of primary air chambers of boilers, in particular to a primary air chamber structure of a circulating fluidized bed boiler with air inlets at two sides and a guide plate.
Background
The Circulating Fluidized Bed (CFB) is a clean coal burning technology and has the characteristics of high efficiency, low pollution and wide fuel adaptability. One of the basic conditions for stable operation of a CFB boiler is to ensure sufficient fluidization of the material in the furnace, which depends not only on the material characteristics, but also on the air distribution characteristics, the uniformity of which is the key to ensure fluidization quality.
The air distribution plate has a certain recombination effect on air flow, but the deviation of air flow reforming resistance is in direct proportion to the non-uniformity of air flow distribution in an air chamber below the air distribution plate. When the primary air chamber of the existing boiler is used, the flow direction of air flow cannot be controlled after the air flow enters the air chamber, the air flow cannot be guided, and the distribution deviation of the air flow in the air chamber is large.
SUMMERY OF THE UTILITY MODEL
This section is for the purpose of summarizing some aspects of embodiments of the utility model and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the abstract of the specification and the title of the application to avoid obscuring the purpose of this section, the abstract of the specification and the title of the application, and such simplifications or omissions are not intended to limit the scope of the utility model.
The present invention has been made in view of the above and/or other problems occurring in the primary plenum of the conventional boiler.
Therefore, the utility model aims to provide a primary air chamber structure of a circulating fluidized bed boiler with air inlets on two sides, which comprises a guide plate, wherein the air chamber structure is simple, the air distribution uniformity of an air distribution plate can be improved through the guide plate, a control device controls different opening degrees of an arc-shaped guide plate through a rotating shaft, the uniform air distribution is carried out on different air quantities under different operation loads, and a series of problems of poor combustion quality of a hearth, coking, blockage of an air cap, slag leakage, low desulfurization efficiency and the like caused by the nonuniform air distribution are reduced.
To solve the above technical problem, according to an aspect of the present invention, the present invention provides the following technical solutions:
a two-side air inlet circulating fluidized bed boiler primary air chamber structure containing a guide plate comprises: the air distribution device is arranged at the top of the primary air chamber, the transverse horizontal guide plate is arranged in the primary air chamber, the rotating shaft is arranged in the primary air chamber, the arc-shaped guide plate is arranged in the primary air chamber, the rotating shaft is connected to the bottom of the arc-shaped guide plate, and the control device controls the arc-shaped guide plate through the rotating shaft.
As a preferred scheme of the utility model, the utility model relates to a primary air chamber structure of a circulating fluidized bed boiler with air inlet at two sides and a guide plate, wherein: the horizontal guide plate, the arc-shaped guide plate and the rotating shaft are arranged in the primary air chamber in a double-layer structure.
As a preferred scheme of the utility model, the utility model relates to a primary air chamber structure of a circulating fluidized bed boiler with air inlet at two sides and a guide plate, wherein: the control device adopts a motor or a hydraulic device, and the output end of the motor or the hydraulic device is hinged with the bottom of the arc-shaped guide plate.
As a preferred scheme of the utility model, the utility model relates to a primary air chamber structure of a circulating fluidized bed boiler with air inlet at two sides and a guide plate, wherein: the air distribution device adopts a primary air chamber air outlet with a guide plate arranged inside, the guide plate is connected in the primary air chamber through a rotating shaft, and the rotating shaft is provided with a control device outside the primary air chamber to drive the rotating shaft.
As a preferred scheme of the utility model, the utility model relates to a primary air chamber structure of a circulating fluidized bed boiler with air inlet at two sides and a guide plate, wherein: a dust screen is arranged at the primary air inlet and is a metal mesh.
Compared with the prior art: the air chamber has a simple structure, the air distribution uniformity of the air distribution plate can be improved through the guide plate, the control device controls different opening degrees of the arc-shaped guide plate through the rotating shaft, the uniform air distribution is carried out on different air quantities under different operation loads, and a series of problems of poor combustion quality, coking, air cap blockage, slag leakage, low desulfurization efficiency and the like of a hearth caused by the nonuniform air distribution are reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail with reference to the accompanying drawings and detailed embodiments, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise. Wherein:
FIG. 1 is a schematic view of the structure of the present invention.
In the figure: 1 primary air chamber, 2 primary air inlets, 3 air distribution devices, 4 horizontal guide plates, 5 arc guide plates, 6 rotating shafts and 7 control devices.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described herein, and it will be apparent to those of ordinary skill in the art that the present invention may be practiced without departing from the spirit and scope of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Next, the present invention will be described in detail with reference to the drawings, wherein for convenience of illustration, the cross-sectional view of the device structure is not enlarged partially according to the general scale, and the drawings are only examples, which should not limit the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
The utility model provides a primary air chamber structure of a circulating fluidized bed boiler with air inlet at two sides of a guide plate, which has a simple air chamber structure, can improve the air distribution uniformity of an air distribution plate through the guide plate, and a control device controls different opening degrees of an arc-shaped guide plate through a rotating shaft to uniformly distribute air for different air quantities under different operation loads, thereby reducing a series of problems of poor combustion quality of a hearth, coking, blockage of an air cap, slag leakage, low desulfurization efficiency and the like caused by nonuniform air distribution, and please refer to fig. 1, which comprises the following steps: the air distribution device comprises a primary air chamber 1, a primary air inlet 2, an air distribution device 3, a horizontal guide plate 4, an arc guide plate 5, a rotating shaft 6 and a control device 7.
Referring to fig. 1 again, a primary air inlet 2 is formed at both sides of a primary air chamber 1, an air distribution device 3 is arranged at the top of the primary air chamber 1, a horizontal guide plate 4 and a rotating shaft 6 are arranged in the primary air chamber 1, an arc guide plate 5 is connected in the primary air chamber 1 through the rotating shaft 6, and a control device 7 drives the arc guide plate 5 through the rotating shaft.
The horizontal guide plate 4 is fixedly arranged in the primary air chamber 1, so that unstable air flow circulation caused by shaking of the horizontal guide plate 4 under the blowing of air flow is avoided, the arc-shaped guide plate 5 is connected into the primary air chamber 1 through the rotating shaft 6 to form a turnover hinge mechanism, and the arc-shaped guide plate 5 turns over around the rotating shaft 6 in the primary air chamber 1 to guide air flow.
As shown in figure 1, the tail end of an arc guide plate 5 is connected in a primary air chamber 1 through a rotating shaft 6, a control device 7 controls the opening degree of the arc guide plate 5 through the rotating shaft 6, multiple sections of rotating shafts 6 and arc guide plates 5 can be arranged according to the size of the structure of the primary air chamber 1, and the specific number can be modified according to the actual book usage so as to meet the use requirements in different air chambers.
The control device 7 adopts a motor or a hydraulic device, and the output end drives the arc-shaped guide plate 5 to rotate around the rotating shaft 6 through the rotating shaft 6.
The air distribution device 3 is arranged above an air outlet of a primary air chamber 1 internally provided with a guide plate, the guide plate is connected in the primary air chamber 1 through a rotating shaft 6, a control device 7 is arranged outside the primary air chamber 1, and the control device 7 drives the rotating shaft 6 to drive an arc-shaped guide plate 5 to turn over for guiding by utilizing a motor or a hydraulic device.
The dust screen is arranged at the primary air inlet 2 and adopts a metal mesh to filter the air flow entering the primary air inlet 2, so that larger impurities are prevented from entering the primary air inlet 2.
When the air distribution device is used specifically, air flow enters the primary air chamber 1 through the primary air inlet 2, is discharged from the air distribution device 3 under the cutting and flow guiding effects of the horizontal flow guide plate 4 and the arc flow guide plate 5, and in the flow guiding process, the control device 7 is utilized to drive the arc flow guide plate 5 to rotate around the rotating shaft 6, so that the flow guiding direction of the arc flow guide plate 5 is adjusted.
While the utility model has been described above with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model. In particular, the various features of the disclosed embodiments of the utility model may be used in any combination, provided that no structural conflict exists, and the combinations are not exhaustively described in this specification merely for the sake of brevity and resource conservation. Therefore, it is intended that the utility model not be limited to the particular embodiments disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.
Claims (5)
1. The utility model provides a both sides air inlet circulating fluidized bed boiler primary air chamber structure that contains the guide plate which characterized in that includes: the air distribution device comprises a primary air chamber (1), a primary air inlet (2), an air distribution device (3), a horizontal guide plate (4), an arc-shaped guide plate (5), a rotating shaft (6) and a control device (7), wherein the primary air inlet (2) is formed in two sides of the primary air chamber (1), the air distribution device (3) is arranged at the top of the primary air chamber (1), the horizontal guide plate (4) is arranged in the primary air chamber (1), the rotating shaft (6) is arranged in the primary air chamber, the arc-shaped guide plate (5) is arranged in the primary air chamber, the rotating shaft (6) is connected to the bottom of the arc-shaped guide plate (5), and the control device (7) controls the opening degree of the arc-shaped guide plate (5) through the rotating shaft (6).
2. The primary air chamber structure of the circulating fluidized bed boiler with air inlet on two sides comprising the guide plate according to claim 1, wherein the horizontal guide plate (4), the arc-shaped guide plate (5) and the rotating shaft (6) are arranged in the primary air chamber (1) in a double-layer structure.
3. The primary air chamber structure of the circulating fluidized bed boiler with air inlet on two sides of the guide plate as claimed in claim 1, wherein the control device (7) adopts a motor or a hydraulic device, and the output end of the motor or the hydraulic device is hinged with the bottom of the arc-shaped guide plate (5).
4. The primary air chamber structure of the circulating fluidized bed boiler with air inlet on two sides of the guide plate as claimed in claim 1, wherein the air distribution device (3) adopts an air outlet of the primary air chamber (1) with the guide plate arranged inside, and the arc-shaped guide plate (5) is connected in the primary air chamber (1) through a rotating shaft.
5. The primary air chamber structure of the circulating fluidized bed boiler with air inlet on two sides comprising the guide plate according to claim 1, wherein a dust screen is arranged at the primary air inlet (2), and the dust screen is a metal screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122668199.3U CN216408944U (en) | 2021-11-03 | 2021-11-03 | Primary air chamber structure of circulating fluidized bed boiler with air inlet at two sides and guide plates |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122668199.3U CN216408944U (en) | 2021-11-03 | 2021-11-03 | Primary air chamber structure of circulating fluidized bed boiler with air inlet at two sides and guide plates |
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| CN216408944U true CN216408944U (en) | 2022-04-29 |
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| CN202122668199.3U Active CN216408944U (en) | 2021-11-03 | 2021-11-03 | Primary air chamber structure of circulating fluidized bed boiler with air inlet at two sides and guide plates |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115289461A (en) * | 2022-08-04 | 2022-11-04 | 内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司 | Resistance uniformity processing structure and method for air distribution plate of circulating fluidized bed boiler |
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2021
- 2021-11-03 CN CN202122668199.3U patent/CN216408944U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115289461A (en) * | 2022-08-04 | 2022-11-04 | 内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司 | Resistance uniformity processing structure and method for air distribution plate of circulating fluidized bed boiler |
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