CN213914269U - Air circulation system - Google Patents
Air circulation system Download PDFInfo
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- CN213914269U CN213914269U CN202022347756.7U CN202022347756U CN213914269U CN 213914269 U CN213914269 U CN 213914269U CN 202022347756 U CN202022347756 U CN 202022347756U CN 213914269 U CN213914269 U CN 213914269U
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- coal mill
- circulation system
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- 239000003245 coal Substances 0.000 claims abstract description 61
- 238000001816 cooling Methods 0.000 claims abstract description 10
- 238000000605 extraction Methods 0.000 claims abstract description 4
- 238000009423 ventilation Methods 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 206010010904 Convulsion Diseases 0.000 claims description 4
- 230000036461 convulsion Effects 0.000 claims description 4
- 238000010248 power generation Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 4
- 239000000446 fuel Substances 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 208000001034 Frostbite Diseases 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Abstract
The utility model relates to an electric power generation technical field especially relates to an air circulation system. The air circulation system is used for cooling the internal environment of a boiler plant and comprises a coal mill air supply system and an indoor air extraction system; the coal mill air supply system comprises a coal mill air supply channel and a first fan assembly, wherein a first air inlet at one end of the coal mill air supply channel is communicated with the outside, and a first air outlet at the other end of the coal mill air supply channel is communicated with the coal mill system; the indoor air draft system comprises an indoor air draft channel, a second air inlet at one end of the indoor air draft channel is communicated with the internal environment of the boiler plant, and a second air outlet at the other end of the indoor air draft channel is communicated with an air supply channel of the coal mill between the first air inlet and the first fan assembly. The air circulation system can repeatedly utilize heat in a boiler plant, effectively utilizes a heat source, and greatly saves energy.
Description
Technical Field
The utility model relates to an electric power generation technical field particularly, relates to an air circulation system.
Background
Northern winter is very cold, so northern thermal power factory is for preventing frostbite, designs the boiler factory building into enclosed construction usually, has mainly arranged equipment such as coal fired boiler, fan coal pulverizer in the factory building. The fuel in the coal-fired boiler generates a large amount of heat in the combustion process, in order to prevent the heat from being dissipated, heat insulation materials are usually used at the periphery and the top of the boiler, however, because the temperature in the boiler is very high (up to about 900-.
In order to reduce the ambient temperature in the boiler plant, in the prior art, an unpowered ventilator is usually installed on the top of the boiler plant, and some windows are added in the middle upper part of the boiler plant for heat dissipation and ventilation, so as to reduce the ambient temperature in the boiler plant. Although the temperature in the boiler plant is reduced in the mode, the quantity of the unpowered ventilators is limited due to the fact that the space at the top of the boiler plant is limited, and the heat exchange quantity of hot air of the powered ventilators is not enough to reduce the temperature in the boiler plant to the proper temperature. Moreover, the window is opened at the middle upper part of the boiler plant, so that the ventilation effect is increased, but as a passive measure, the cooling effect is limited and uncontrollable. In addition, based on the safety consideration of the pressure-bearing of the top of the boiler plant, the maintenance of the unpowered fan belongs to high-altitude operation, and a large safety risk exists.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an air circulation system to there is the too high technical problem of temperature in the boiler plant among the solution prior art.
The utility model provides an air circulation system which is used for cooling the internal environment of a boiler plant; the air circulation system comprises a coal mill air supply system and an indoor air extraction system which are positioned in a boiler plant;
the coal mill air supply system comprises a coal mill air supply channel, a first fan assembly and an air preheater, wherein the first fan assembly and the air preheater are communicated with the coal mill air supply channel, and air in the coal mill air supply channel (210) can sequentially pass through the first fan assembly (220) and the air preheater (230) to generate high-pressure high-temperature gas and convey the high-pressure high-temperature gas to the coal mill system so as to dry and heat coal in the coal mill system; a first air inlet at one end of the coal mill air supply channel is communicated with the outside, and a first air outlet at the other end of the coal mill air supply channel is communicated with a coal mill system;
the indoor air draft system comprises an indoor air draft channel; the second air inlet of indoor convulsions passageway one end communicates in the internal environment of boiler factory building, and the second air outlet of the other end communicates in being located first air inlet with coal pulverizer air supply passageway between the first fan subassembly.
Furthermore, the second air inlet is formed in the boiler plant and close to the roof.
Further, the second air inlets are at least two, at least one of the second air inlets is located near the middle rear part of the roof, and at least one of the second air inlets is located near the middle front part of the roof.
Furthermore, a valve is arranged on an indoor air exhaust channel between the second air inlet and the first fan assembly.
Further, the valve is an adjusting valve capable of adjusting the opening degree of the valve.
Further, the roof of the boiler plant is provided with a skylight.
Furthermore, there are a plurality of skylights, and the interval sets up in the roof of boiler factory building.
Further, still include the second fan subassembly, the second fan subassembly sets up in the skylight.
Further, the second fan assembly is an unpowered fan.
Furthermore, a filter screen is arranged at the first air inlet; and/or a filter screen is arranged at the second air inlet.
The utility model provides an air circulation system can produce following beneficial effect:
the utility model provides an among the air circulation system, indoor exhaust system has been set up in the boiler factory building, and communicate indoor exhaust system's indoor exhaust channel in the inlet side of the first fan subassembly of coal pulverizer air supply system, so set up, coal pulverizer air supply system is the coal pulverizer system air supply in-process, the inlet side of first fan subassembly has certain negative pressure, thereby inhale the hot-air in outdoor air and the boiler factory building to the coal pulverizer air supply passageway in, first fan subassembly is with gaseous pressurization, air heater is with gas heating, then carry the hot-air after will heating to the coal pulverizer system, in order to heat the coal charge, provide high-quality fuel for the boiler. In this working process, the high temperature air in the boiler factory building that boiler work caused is at least partly taken out, for the effective cooling of indoor environment, in addition, because indoor hot air is taken out, based on the air characteristic, can have outdoor cold air and pass through the door and window of boiler factory building and enter into to the boiler factory building in, cold and hot air forms the convection current to have good cooling effect, further cool down boiler factory building internal environment. Meanwhile, the heat in the boiler plant is recycled, the heat source is effectively utilized, and the energy is greatly saved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required 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 embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic view of an air circulation system according to an embodiment of the present invention.
Description of reference numerals:
100-boiler plant;
110-skylight;
120-a second fan assembly;
200-a coal mill air supply system;
210-a coal mill air supply channel; 211-a first air inlet; 212-a first outlet;
220-a first fan assembly;
230-an air preheater;
240-coal pulverizer system;
300-indoor air draft system;
310-indoor air draft channel; 311-a second air inlet; 312-a second air outlet;
320-a valve;
400-boiler.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The present embodiment provides an air circulation system for cooling the internal environment of a boiler plant 100; as shown in FIG. 1, the air circulation system includes a pulverizer air supply system 200 and an indoor air extraction system 300 located within the boiler plant 100.
As shown in fig. 1, the coal mill air supply system 200 includes a coal mill air supply passage 210, and a first fan assembly 220 and an air preheater 230 communicated with the coal mill air supply passage 210, and air in the coal mill air supply passage 210 can sequentially pass through the first fan assembly 220 and the air preheater 230 to generate high-pressure and high-temperature gas and deliver the high-pressure and high-temperature gas to the coal mill system 240 so as to heat coal in the coal mill system 240; the first air inlet 211 at one end of the coal mill air supply passage 210 is communicated with the outdoor, and the first air outlet 212 at the other end is communicated with the coal mill system 240.
The indoor ventilation system 300 includes an indoor ventilation channel 310; the second air inlet 311 at one end of the indoor air draft channel 310 is communicated with the internal environment of the boiler plant, and the second air outlet 312 at the other end is communicated with the coal mill air supply channel 210 between the first air inlet 211 and the first fan assembly 220.
Among the air circulation system that this embodiment provided, indoor exhaust system has been set up in the boiler factory building, and communicate indoor exhaust channel of indoor exhaust system in the inlet side of the first fan subassembly of coal pulverizer air supply system, so set up, coal pulverizer air supply system is the coal pulverizer system air supply in-process, the inlet side of first fan subassembly has certain negative pressure, thereby inhale the hot-air in outdoor air and the boiler factory building to the coal pulverizer air supply passageway in, first fan subassembly is with gas pressurization, air heater is with gas heating, then carry the hot-air after will heating to the coal pulverizer system, in order to heat the coal charge, provide high-quality fuel for boiler 400. In this working process, the high temperature air in the boiler factory building that boiler 400 work caused is at least partly taken out, for the effective cooling of indoor environment, in addition, because indoor hot air is taken out, based on the air characteristic, has outdoor cold air and gets into to the boiler factory building in through the door and window of boiler factory building, cold and hot air forms the convection current to have good cooling effect, further cool down boiler factory building internal environment. Meanwhile, the heat in the boiler plant is recycled, the heat source is effectively utilized, and the energy is greatly saved.
It should be noted that, in this embodiment, at least part of the hot air at the top of the boiler plant is actively drawn away by the first fan assembly, so that accurate control can be performed according to actual working requirements, that is, the control by workers is facilitated.
In this embodiment, as shown in fig. 1, the second air inlet 311 is disposed in the boiler plant 100 near the roof. So set up, can take away the hot-air of roof position department in advance, the cold air of being convenient for gets into (mends) to the boiler plant in from being close to boiler plant lower part position department, and then effectively cools down boiler plant internal environment.
In this embodiment, as shown in fig. 1, the second air inlets 311 have at least two inlets, at least one second air inlet 311 is located near the middle rear portion of the roof, and at least one second air inlet 311 is located near the middle front portion of the roof. So set up, can follow a plurality of position points and take away hot-air, make indoor heat transfer more even.
In this embodiment, as shown in fig. 1, a valve 320 is disposed in the indoor exhaust channel 310 between the second air inlet 311 and the first fan assembly 220. Preferably, the valve 320 is a regulating valve capable of regulating the opening degree thereof. So set up, can be according to the quantity of the selection second air intake 311 of the indoor concrete ambient temperature adaptability of boiler plant to the aperture of the corresponding valve 320 of control, and then realize the air flow of convulsions passageway in the control room, and then the ambient temperature in the effective control boiler plant. In addition, the setting position of the valve is more flexible, for example, the valve can be arranged at a height convenient for workers to operate, so that the high-altitude operation of the workers is reduced or even avoided, and the safety risk in the maintenance work is reduced or even avoided.
It should be noted that, when there are a plurality of second air inlets 311, the branches of the indoor exhaust channel 310 are communicated with each other through a multi-way valve, for example: three-way valves, four-way valves, etc., without limitation.
In this embodiment, as shown in fig. 1, a roof of the boiler plant 100 is provided with a skylight 110. Preferably, the plurality of louvers 110 are provided at intervals on the roof of the boiler plant 100. So set up, the setting in skylight can be discharged the heat from the skylight, and then reduces the indoor ambient temperature in the boiler building.
In this embodiment, as shown in fig. 1, at the position of the skylight 110, a second fan assembly 120 is disposed, and preferably, the second fan assembly 120 is an unpowered fan. So set up, second fan subassembly 120 during operation can accelerate the interior air flow velocity of boiler plant, and then fast with the hot-air outgoing in the boiler plant outdoor, the ambient temperature in the boiler plant of being convenient for descends fast.
In this embodiment, the first air inlet 211 and the second air inlet 311 are both provided with a filter screen (not shown in the figure) to isolate dust, reduce or even prevent the dust from being sucked into the indoor air draft channel and the air supply channel of the coal pulverizer. In other embodiments of the present application, the first intake vent 211 or the second intake vent 311 is provided with a filter, which is not limited herein.
It should be noted that, in this embodiment, when the first fan assembly works, according to the power level, the opening of the corresponding valve is adjusted to control the intake air volume of the second air inlet, the air suction effect of the air inlet draws away the hot air at the top in the boiler plant, the cold air outside the boiler plant can enter the room through the doors and windows at the bottom and the middle part of the boiler plant, and the cold air and the hot air form convection, so that the cooling effect is good, the indoor environment temperature in the top and even in the whole plant in the boiler plant is greatly reduced (controllable at about 30 ℃ in summer and about 25 ℃ in winter), so that the equipment and workers in the boiler plant are all in the adaptive working environment, the electronic equipment is effectively protected, and the working environment comfort level of the workers is improved.
Moreover, the adjusting valve can be nimble carry out the size regulation of valve aperture to the amount of wind that the adjustment pipeline induced drafted controls the hot-air displacement volume at boiler factory building top, thereby can be comparatively accurate control boiler factory building top and even the ambient temperature in the whole boiler factory building. For example, the regulating valve may be closed when the winter environmental temperature is too low.
Moreover, in northern summer, the outdoor environment temperature is generally about 30 ℃, and is lower in spring and autumn, the temperature difference between the first air inlet and the environment temperature in the boiler plant is at least about 20 ℃, and when hot air in the boiler plant is pumped into the coal mill air supply channel, the air supply temperature of the coal mill air supply channel is improved to a certain extent, and a certain energy-saving effect is achieved.
In a word, adopt the air circulation system that this embodiment provided, through setting up indoor convulsions passageway, adjusting valve etc. through control adjusting valve's aperture size, carry out cyclic utilization with the hot-air at boiler plant top, solved the high problem of the inside ambient temperature of boiler plant promptly, effectively utilized the heat source again, had energy-conserving effect.
Finally, it is further noted that, herein, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to the embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. An air circulation system, characterized by being used for cooling the internal environment of a boiler plant (100); the air circulation system comprises a coal mill air supply system (200) and an indoor air extraction system (300) which are positioned in a boiler plant (100);
the coal mill air supply system (200) comprises a coal mill air supply channel (210), and a first fan assembly (220) and an air preheater (230) which are communicated with the coal mill air supply channel (210), wherein air in the coal mill air supply channel (210) can sequentially pass through the first fan assembly (220) and the air preheater (230) to generate high-pressure high-temperature gas and convey the high-pressure high-temperature gas to the coal mill system (240) so as to heat coal in the coal mill system (240); a first air inlet (211) at one end of the coal mill air supply channel (210) is communicated with the outside, and a first air outlet (212) at the other end of the coal mill air supply channel is communicated with a coal mill system (240);
the indoor ventilation system (300) comprises an indoor ventilation channel (310); the second air intake (311) of indoor convulsions passageway (310) one end communicates in the internal environment of boiler factory building, and second air outlet (312) of the other end communicate in be located first air intake (211) with coal pulverizer air supply passageway (210) between first fan subassembly (220).
2. The air circulation system according to claim 1, wherein the second air inlet (311) is arranged in the boiler plant (100) near the roof.
3. The air circulation system according to claim 2, wherein the second air intake openings (311) have at least two, at least one of the second air intake openings (311) is located near the middle rear portion of the roof, and at least one of the second air intake openings (311) is located near the middle front portion of the roof.
4. An air circulation system according to any of claims 1-3, characterized in that the indoor air draft channel (310) between the second air intake (311) and the first fan assembly (220) is provided with a valve (320).
5. The air circulation system according to claim 4, wherein the valve (320) is a regulating valve whose opening degree can be regulated.
6. An air circulation system according to any of the claims 1-3, characterized in that the roof of the boiler plant (100) is provided with a skylight (110).
7. The air circulation system of claim 6, wherein the plurality of louvers (110) are spaced apart on the roof of the boiler plant (100).
8. The air circulation system of claim 7, further comprising a second fan assembly (120) disposed in the skylight (110).
9. The air circulation system of claim 8, wherein the second fan assembly (120) is an unpowered fan.
10. An air circulation system according to any of claims 1-3, characterized in that a filter screen is arranged at the first air inlet (211); and/or a filter screen is arranged at the second air inlet (311).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022347756.7U CN213914269U (en) | 2020-10-20 | 2020-10-20 | Air circulation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022347756.7U CN213914269U (en) | 2020-10-20 | 2020-10-20 | Air circulation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213914269U true CN213914269U (en) | 2021-08-10 |
Family
ID=77163150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022347756.7U Expired - Fee Related CN213914269U (en) | 2020-10-20 | 2020-10-20 | Air circulation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213914269U (en) |
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2020
- 2020-10-20 CN CN202022347756.7U patent/CN213914269U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210810 |
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| CF01 | Termination of patent right due to non-payment of annual fee |