CN216308341U - Boiler cooling air system of thermal power plant - Google Patents
Boiler cooling air system of thermal power plant Download PDFInfo
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- CN216308341U CN216308341U CN202122466904.1U CN202122466904U CN216308341U CN 216308341 U CN216308341 U CN 216308341U CN 202122466904 U CN202122466904 U CN 202122466904U CN 216308341 U CN216308341 U CN 216308341U
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- 238000001816 cooling Methods 0.000 title claims abstract description 119
- 238000007789 sealing Methods 0.000 claims abstract description 24
- 239000003245 coal Substances 0.000 claims abstract description 6
- 238000001514 detection method Methods 0.000 claims description 8
- 238000010586 diagram Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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Abstract
The utility model provides a boiler cooling air system of a thermal power plant, which relates to the technical field of cooling air systems and comprises a first loop cooling air main pipe and a second loop cooling air main pipe which are arranged up and down around a boiler body, wherein the corner of the first loop cooling air main pipe is connected with the corner of the second loop cooling air main pipe through a vertical pipe, the first loop cooling air main pipe is connected with a first air supply pipeline, the second loop cooling air main pipe is connected with a second air supply pipeline, the first air supply pipeline is connected with a sealing fan and a boiler coal mill system, the sealing fan is connected with a sealing fan inlet filter screen, the second air supply pipeline is connected with a cooling fan, and the cooling fan is connected with a cooling fan inlet filter screen.
Description
Technical Field
The utility model relates to the technical field of cooling air systems, in particular to a cooling air system of a boiler of a thermal power plant.
Background
In order to reduce the energy consumption index and the production and operation cost of the power plant, the energy-saving potential of the equipment system is developed by optimizing the operation mode of the equipment system. Each auxiliary mechanical device of the power plant is a large energy-consuming user, and the number of auxiliary machines on the boiler side is large, so that the improvement of the operation efficiency of the device is necessary for the control cost of the power plant and the reduction of the plant power consumption rate.
The boiler of the thermal power plant needs various cooling air systems to provide cooling air sources for related systems, so that the normal temperature of equipment during operation is ensured. The cooling air systems are independent from each other and are composed of respective cooling fans and auxiliary pipeline valves thereof, so that the equipment investment in the construction period is increased, and the operation efficiency of the system is reduced. The existing scheme of the existing boiler cooling air system has two types: firstly, the cooling air systems are mutually independent and are provided with a plasma ignition cooling air system, a fire detection cooling air system and a flame television cooling air system. Secondly, each cooling air system is provided with a cooling air source by a respective fan. However, in the existing solutions, the first solution increases the equipment investment in the construction period, and the system of the second solution has low operation efficiency. In conclusion, the utility model is to provide a cooling air system which reduces the equipment investment in the construction period and improves the operation efficiency of the system.
SUMMERY OF THE UTILITY MODEL
The utility model provides a boiler cooling air system of a thermal power plant, which solves the problem of low operation efficiency of the existing boiler cooling air system of the thermal power plant.
In order to achieve the above purposes, the technical scheme adopted by the utility model is as follows:
the utility model provides a thermal power plant boiler cooling air system, includes around the female pipe of the first loop cooling air and the female pipe of second loop cooling air that set up from top to bottom of boiler body, the corner of the female pipe of first loop cooling air links to each other through the riser with the corner of the female pipe of second loop cooling air, the female pipe of first loop cooling air links to each other with first air feed pipeline, the female pipe of second loop cooling air links to each other with second air feed pipeline, first air feed pipeline links to each other with sealed fan and boiler coal pulverizer system, sealed fan links to each other with sealed fan entry filter screen, second air feed pipeline links to each other with cooling blower, cooling blower links to each other with cooling blower entry filter screen.
Preferably, a first check valve, a first butterfly valve and a sealing fan outlet electric door are sequentially arranged on a pipeline connecting the first air supply pipeline and the sealing fan.
Preferably, a sixth butterfly valve, a pressure sensor, a second check valve and a second butterfly valve are sequentially arranged on a pipeline connecting the second air supply pipeline and the cooling fan.
Preferably, the corners of the first loop cooling air header pipe and the second loop cooling air header pipe are arc-shaped.
Preferably, the vertical pipe is connected with a cooling air pipe for plasma ignition, the vertical pipe is connected with a cooling air pipe for fire detection, and the vertical pipe is connected with a cooling air pipe for a flame television.
Preferably, a third butterfly valve and a first pressure gauge are arranged on a pipeline between the vertical pipe and the cooling air pipe for plasma ignition, a fourth butterfly valve and a second pressure gauge are arranged on a pipeline between the vertical pipe and the cooling air pipe for fire detection, and a fifth butterfly valve and a third pressure gauge are arranged on a pipeline between the vertical pipe and the cooling air pipe for flame television.
The utility model has the beneficial effects that:
the utility model integrates all independent cooling air systems by arranging a universal boiler cooling air system, thereby achieving the effect of reducing equipment investment;
according to the utility model, the double-loop cooling air main pipes are arranged, and each main pipe is connected with two independent air sources, so that the effect of improving the safety is achieved;
according to the utility model, through setting the air source operation mode, the air source is provided by the sealing fan with higher efficiency during normal operation, and the arc transition is adopted at the corner of the loop cooling air main pipe, so that the on-way resistance loss is reduced, and the effect of improving the operation efficiency is achieved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a layout diagram of the air duct of the boiler of the present invention.
Fig. 2 is a layout diagram of a sealed fan air source of the utility model.
Fig. 3 is a layout diagram of a cooling fan air source of the present invention.
Fig. 4 is a layout diagram of the wind supply stand pipe of the present invention.
The reference numbers illustrate:
1. a boiler body; 2. a first loop cooling air main pipe; 3. a second loop cooling air main pipe; 4. a riser; 5. a first air supply duct; 6. a second air supply duct; 7. a sealing fan 8 and a boiler coal mill system; 9. sealing a filter screen at the inlet of the fan; 10. a cooling fan; 11. a filter screen at the inlet of the cooling fan; 12. a first check valve; 13. a first butterfly valve; 14. sealing the electric door at the outlet of the fan; 15. a pressure sensor; 16. a second non-return valve; 17. a second butterfly valve; 18. a cooling air pipe for plasma ignition; 19. a cooling air pipe for fire detection; 20. a cooling air pipe for a flame television; 21. a third butterfly valve; 22. a fourth butterfly valve; 23. a fifth butterfly valve; 24. a sixth butterfly valve; 25. a first pressure gauge; 26. a second pressure gauge; 27. and a third pressure gauge.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the utility model. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the absence of any contrary indication, these directional terms are not intended to indicate and imply that the device or element so referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be considered as limiting the scope of the present invention: the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.
The utility model provides a technical scheme that: the utility model provides a boiler cooling air system of thermal power plant, its structure is shown as figure 1-4, includes that the first loop cooling air of setting is female 2 and the female 3 of second loop cooling air from top to bottom around boiler body 1, and the corner of the female 2 of first loop cooling air and the female 3 of second loop cooling air is convex, reduces along journey resistance loss, guarantees that the wind pressure everywhere of female pipe is equal basically. The corners of the first loop cooling air main pipe 2 are connected with the corners of the second loop cooling air main pipe 3 through vertical pipes 4, and the vertical pipes 4 are used as cooling air main pipes of all corners of the boiler and used for taking air to all systems. The vertical pipe 4 is connected with a cooling air pipe 18 for plasma ignition, and a third butterfly valve 21 and a first pressure gauge 25 are arranged on the connecting pipe. The vertical pipe 4 is connected with a cooling air pipe 19 for fire detection, and a fourth butterfly valve 22 and a second pressure gauge 26 are arranged on the connecting pipe. The vertical pipe 4 is connected with a cooling air pipe 20 for the flame television, and a fourth butterfly valve 22 and a third pressure gauge 27 are arranged on the connecting pipe. The first loop cooling air main pipe 2 is connected with a first air supply pipeline 5, the second loop cooling air main pipe 3 is connected with a second air supply pipeline 6, and the first air supply pipeline 5 is connected with a sealing fan 7 and a boiler coal mill system 8 to provide sealing air for the coal mill system. A first check valve 12, a first butterfly valve 13 and a sealing fan outlet electric door 14 are sequentially arranged on the pipeline connecting the first air supply pipeline 5 and the sealing fan 7. The sealing fan 7 is connected with a sealing fan inlet filter screen 9, and the sealing fan inlet filter screen 9 filters impurities in the air. The second air supply pipeline 6 is connected with a cooling fan 10, the cooling fan 10 is connected with a cooling fan inlet filter screen 11, and the cooling fan inlet filter screen 11 filters impurities in air. And a sixth butterfly valve 24, a pressure sensor 15, a second check valve 16 and a second butterfly valve 17 are sequentially arranged on a pipeline connecting the second air supply pipeline 6 and the cooling fan 10.
According to the utility model, by arranging the double-loop main pipe and the vertical pipe, the turning part adopts arc transition, the on-way resistance loss is reduced, the efficiency is improved, and the wind pressure at each part of the main pipe is ensured to be basically equal.
The efficiency of a large fan of a similar fan is higher than that of a small fan, and a boiler sealing fan with higher power is adopted to provide an air source during normal operation.
In the working process, the boiler sealing fan 7 operates, the electric door 14 and the first butterfly valve 13 at the outlet of the sealing fan are opened, cooling air enters a boiler cooling air main pipe through the first air supply pipeline 5 and enters a branch cooling air pipe 18 for plasma ignition, a branch cooling air pipe 19 for fire detection and a branch cooling air pipe 20 for flame televisions through the vertical pipe 4 to supply cooling air for each system.
At this time, the cooling fan 10 is stopped, the second butterfly valve 17 and the sixth butterfly valve 24 are opened, and the cooling air is not discharged to the atmosphere through the cooling fan 10 due to the second check valve 16.
When the wind pressure of the pressure sensor 15 is lower than a set value 1, a signal is sent to the control module, the single cooling fan 10 is started, the cooling fan 10 provides boiler cooling wind, and the cooling wind enters the second air supply pipeline 6 through the second butterfly valve 17, the second check valve 16 and the sixth butterfly valve 24.
When the wind pressure of the pressure sensor 15 is lower than the set value 2, a signal is sent to the control module, all the cooling fans 10 are started, boiler cooling wind is provided by all the cooling fans 10, and the cooling wind enters the second wind supply pipeline 6 through the second butterfly valve 17, the second check valve 16 and the sixth butterfly valve 24.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (6)
1. The utility model provides a boiler cooling air system of thermal power plant which characterized in that: the boiler comprises a first loop cooling air main pipe (2) and a second loop cooling air main pipe (3) which are vertically arranged around a boiler body (1), wherein the corners of the first loop cooling air main pipe (2) are connected with the corners of the second loop cooling air main pipe (3) through a vertical pipe (4), the first loop cooling air main pipe (2) is connected with a first air supply pipeline (5), the second loop cooling air main pipe (3) is connected with a second air supply pipeline (6), the first air supply pipeline (5) is connected with a sealing fan (7) and a boiler coal mill system (8), the sealing fan (7) is connected with a sealing fan inlet filter screen (9), the second air supply pipeline (6) is connected with a cooling fan (10), and the cooling fan (10) is connected with a cooling fan inlet filter screen (11).
2. The heat-engine plant boiler cooling air system according to claim 1, characterized in that: and a first check valve (12), a first butterfly valve (13) and a sealing fan outlet electric door (14) are sequentially arranged on the pipeline connecting the first air supply pipeline (5) and the sealing fan (7).
3. The heat-engine plant boiler cooling air system according to claim 1, characterized in that: and a sixth butterfly valve (24), a pressure sensor (15), a second check valve (16) and a second butterfly valve (17) are sequentially arranged on the pipeline connecting the second air supply pipeline (6) and the cooling fan (10).
4. The heat-engine plant boiler cooling air system according to claim 1, characterized in that: the corners of the first loop cooling air main pipe (2) and the second loop cooling air main pipe (3) are arc-shaped.
5. The heat-engine plant boiler cooling air system according to claim 1, characterized in that: the vertical pipe (4) is connected with a cooling air pipe (18) for plasma ignition, the vertical pipe (4) is connected with a cooling air pipe (19) for fire detection, and the vertical pipe (4) is connected with a cooling air pipe (20) for a flame television.
6. The heat-engine plant boiler cooling air system according to claim 5, characterized in that: connect be provided with third butterfly valve (21) and first manometer (25) on the pipeline between riser (4) and cooling air pipe for plasma ignition (18), connect be provided with fourth butterfly valve (22) and second manometer (26) on the pipeline between riser (4) and cooling air pipe for fire detection (19), connect be provided with fifth butterfly valve (23) and third manometer (27) on riser (4) and the cooling air pipe for flame TV on the pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122466904.1U CN216308341U (en) | 2021-10-13 | 2021-10-13 | Boiler cooling air system of thermal power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122466904.1U CN216308341U (en) | 2021-10-13 | 2021-10-13 | Boiler cooling air system of thermal power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216308341U true CN216308341U (en) | 2022-04-15 |
Family
ID=81115334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122466904.1U Withdrawn - After Issue CN216308341U (en) | 2021-10-13 | 2021-10-13 | Boiler cooling air system of thermal power plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216308341U (en) |
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2021
- 2021-10-13 CN CN202122466904.1U patent/CN216308341U/en not_active Withdrawn - After Issue
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20220415 Effective date of abandoning: 20240112 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20220415 Effective date of abandoning: 20240112 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |