CN218154241U - Baffle door closure system - Google Patents
Baffle door closure system Download PDFInfo
- Publication number
- CN218154241U CN218154241U CN202221749044.0U CN202221749044U CN218154241U CN 218154241 U CN218154241 U CN 218154241U CN 202221749044 U CN202221749044 U CN 202221749044U CN 218154241 U CN218154241 U CN 218154241U
- Authority
- CN
- China
- Prior art keywords
- air
- air pipe
- fan
- sealing
- flapper door
- Prior art date
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- 238000007789 sealing Methods 0.000 claims abstract description 39
- 230000009471 action Effects 0.000 claims description 4
- 241000238631 Hexapoda Species 0.000 claims description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 18
- 239000003546 flue gas Substances 0.000 description 18
- 238000006477 desulfuration reaction Methods 0.000 description 9
- 230000023556 desulfurization Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 238000004056 waste incineration Methods 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 1
- 238000004887 air purification Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/12—Heat utilisation in combustion or incineration of waste
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- Air-Flow Control Members (AREA)
Abstract
The utility model discloses a baffle door sealing system, which comprises a sealing fan, a baffle door, a shunting device and an air pipe, wherein the air pipe comprises a cold air pipe and a hot air pipe, one end of the cold air pipe is communicated with the outside air, one end of the hot air pipe is communicated with a boiler draught fan, the other ends of the cold air pipe and the hot air pipe are communicated with the sealing fan, the air outlet of the sealing fan is connected with the baffle door, and the shunting device is fixedly arranged on the air pipe; the utility model discloses a set up diverging device to can freely adjust the amount of wind that gets into sealed fan, thereby make the temperature and the pressure energy that act on the air of flapper door can satisfy the user demand, realize the closure to the flapper door.
Description
Technical Field
The utility model relates to a msw incineration field especially relates to a flapper door closed system.
Background
The waste incineration power generation is an important way for realizing the recycling, harmlessness and reduction of the waste, and the flue gas generated by the waste incineration boiler can be discharged through a chimney only after reaching the environmental emission standard through a desulfurization (FGD) and denitration (SCR) system. When the wet flue gas desulfurization and SCR denitration system breaks down or needs to be shut down for maintenance, the flue gas is discharged to a chimney through a bypass flue, and at the moment, a baffle door of the bypass flue of the desulfurization and denitration system needs to be opened, and the baffle door is closed to seal air; then closing the inlet and outlet sealing baffle doors of the flue of the desulfurization or denitrification system, and opening the inlet and outlet sealing baffle doors to seal air.
The flue gas damper door is usually a double-layer louver type, and generally requires 100% tightness under the action of maximum pressure difference. In addition to the sealing elements provided on each layer of the flapper door, a sealing air supply is provided to the cavity between the two layers of the flapper door to further provide sealing of the flapper door. If the bypass baffle door, the FGD system and the SCR system inlet baffle door and outlet baffle door are not provided with the sealing air system, because the blades of the baffles have gaps, when the FGD system and the SCR system are put into use, the raw flue gas leaks to the clean flue gas, and the flue gas emission is easy to exceed the standard; when the FGD and SCR systems are shut down, hot flue gas leaks into the FGD and SCR systems, or cold air of the FGD and SCR systems leaks into the bypass flue, so that corrosion in the systems and corrosion damage of the baffle door are caused. Meanwhile, the inlet baffle door and the outlet baffle door are provided with a sealing air system, and when the bypass flue runs and component inspection and maintenance are carried out in the flue system, the SCR and the washing tower, the sealing air baffle is used for preventing air leakage for personnel protection.
Existing damper door seal air systems typically include a seal fan and a backup seal fan. The sealing air pressure is at least 0.5kpa higher than the maximum pressure of the flue gas, the baffle door sealing air is provided with an electric heater, and the sealing air is heated to a certain temperature, so that the temperature difference deformation stress between the double-layer baffles is reduced, and the sealing reliability of the baffles is improved.
The baffle door sealing air system is in conventional configuration, and the investment is high because the sealing air system comprises a sealing fan and a heater; the electric energy consumed by heating the sealing air is large, the running resistance is large, the running cost is high, and the energy conservation is not facilitated; in addition, the frequent start and stop of the electric heater leads to frequent occurrence of burnout accidents, and the desulfurization and denitrification sealing air system cannot normally operate.
SUMMERY OF THE UTILITY MODEL
To the weak point that exists among the above-mentioned technique, the utility model provides a flapper door closed system is through setting up diverging device to can freely adjust the amount of wind that gets into sealed fan, thereby make the temperature and the pressure energy that act on the air of flapper door satisfy the user demand, realize the closure to the flapper door.
In order to achieve the above object, the utility model provides a flapper door closed system, including sealing fan, flapper door, diverging device and tuber pipe, the tuber pipe includes cold-blast main and hot-blast main, the one end and the outside air of cold-blast main are linked together, the one end and the boiler draught fan of hot-blast main are linked together, and the other end of cold-blast main, hot-blast main all is linked together with sealing fan, sealing fan's air outlet is connected with the flapper door, diverging device fixed mounting be in on the tuber pipe.
Preferably, the flow dividing device comprises a shell, a flow dividing mark and a control valve, wherein the control valve and the flow dividing mark are respectively arranged on the inner side and the outer side of the shell, the shell is of a cavity structure, and an air channel is arranged in the shell; one end of the shell is provided with an air inlet, the other end of the shell is provided with an air outlet, the flow dividing marks are arranged between the air inlet and the air outlet, and the two air outlets are respectively positioned on two sides of the flow dividing marks.
Preferably, the vertex angle of the branch flow indicator in the conical structure faces one side of the air inlet and is abutted with the air duct; the lower end of the branch flow indicator is movably pivoted on the inner side wall of the shell, and the branch flow indicator is driven to swing left and right under the action of the control valve and is abutted against the two sides of the air duct.
Preferably, the air outlet is further provided with a flow sensor, and the flow sensor is communicated with a display screen beside the control valve.
Preferably, an insect prevention filter screen is installed at the air inlet of the cold air pipe.
Preferably, the baffle door is a double-layer shutter type baffle door, and a control valve for controlling the baffle door to move is arranged beside the baffle door.
The beneficial effects of the utility model are that: compared with the prior art, the utility model respectively obtains hot air and cold air from the outlet flue of the draught fan and air; mixing the obtained hot air and cold air to meet a certain temperature, and sending sealing air into the baffle to be sealed by using a sealing fan to seal the required baffle to be sealed; the utility model discloses save the step that utilizes electric heater to heat sealed wind in fact, energy-conserving increase, just adopted hot-blast and cold wind to mix moreover before sealed fan, reduced the harm of high temperature to sealed fan, prolonged the life of equipment.
Drawings
FIG. 1 is a schematic view of the main structure of the present invention;
fig. 2 is an internal schematic view of the flow dividing structure of the present invention;
fig. 3 is a front view of the flow dividing structure of the present invention.
The main component symbols are as follows:
1. flow divider 2, flue gas inlet flue 3, bypass baffle door 4, outlet baffle door
5. Inlet baffle door 6, electric valve 8, sealing fan 9, pressure measuring point
10. Temperature control measuring point 11, air inlet 12, air outlet 13, shunt scale 14 and control valve
15. Display screen 71, cold air duct 72, hot air duct.
Detailed Description
In order to make the present invention clearer, the following description will be made with reference to the accompanying drawings, and the technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application. Based on the embodiments in the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description of the present invention and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or including indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, "plurality" means two or more unless specifically limited otherwise.
In the present application, the word "exemplary" is used to mean "serving as an example, instance, or illustration. Any embodiment described herein as exemplary is not necessarily to be construed as preferred or advantageous over other embodiments. The following description is presented to enable any person skilled in the art to make and use the invention. In the following description, details are set forth for the purpose of explanation. It will be apparent to one of ordinary skill in the art that the present invention may be practiced without these specific details. In other instances, well-known structures and processes are not shown in detail to avoid obscuring the description of the present invention with unnecessary detail. Thus, the present invention is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles disclosed herein.
Please refer to fig. 1 to fig. 3, the utility model discloses a flapper closed system, including sealed fan 8, flapper, diverging device 1 and tuber pipe, the tuber pipe includes cold air duct 71 and hot-blast main 72, and the one end of cold air duct 71 is linked together with the outside air, and the one end of hot-blast main 72 is linked together with the boiler draught fan, and the other end of cold air duct 71, hot-blast main 72 all is linked together with sealed fan 8, and sealed fan 8's air outlet is connected with the flapper, and diverging device 1 fixed mounting is on the tuber pipe. The damper is an inlet damper 5 and an outlet damper 4 respectively, more specifically, a flue gas inlet flue 2 is connected with a flue gas inlet and an outlet flue of a desulfurization or denitrification system, an outlet of the flue gas inlet flue 2 is connected with an inlet of an induced draft fan, and a bypass damper 3 is arranged at one side close to the induced draft fan in the flue gas inlet pipeline 2; the inlet baffle door 5 is arranged in the inlet flue gas conveying pipeline of the desulfurization or denitrification system; the outlet baffle door 4 is arranged in an outlet flue gas conveying pipeline of a desulfurization or denitrification system, one end of a sealed fan communicating pipeline is connected with a sealed fan 8, the other end of the sealed fan communicating pipeline is connected with a bypass baffle door 3, an inlet baffle door 5 and an outlet baffle door 4, the inlet end of the sealed fan communicating pipeline is provided with a pressure measuring point 9 and a temperature control measuring point 10, electric valves 6 are arranged among the bypass baffle door 3, the inlet baffle door 5, the outlet baffle door 4 and the sealed fan communicating pipeline, and the valves are all connected with a main control unit, so that remote control is realized. The bypass damper door 3, the inlet damper door 5 and the outlet damper door 4 are all double-layer shutter type damper doors.
In order to enable air driven by a sealing fan to be on a baffle door, so that the density air pressure of the baffle door is higher than the maximum pressure of smoke, the temperature reaches the relevant requirements, and the temperature difference deformation stress is reduced, a flow dividing device is particularly arranged, the air quantity passing through the sealing fan is adjusted by the flow dividing device, more specifically, the flow dividing device 1 comprises a shell, a flow dividing mark 13 and a control valve 14, the control valve 14 and the flow dividing mark 13 are respectively arranged on the inner side and the outer side of the shell, the shell is of a cavity structure, and an air channel is arranged in the shell; one end of the shell is provided with an air inlet 11, the other end of the shell is provided with an air outlet 12, the shunting marks 13 are arranged between the air inlet 11 and the air outlet 12, and two air outlets 12 are arranged and are respectively positioned at two sides of the shunting marks 13; the flow dividing mark 13 is in a conical structure, and the vertex angle of the flow dividing mark 13 faces one side of the air inlet 11 and is abutted with the air duct; the lower end of the branch flow indicator 13 is movably pivoted on the inner side wall of the shell, and the branch flow indicator 13 is driven to swing left and right under the action of the control valve 14 and is abutted against the two sides of the air channel. And a flow sensor is also arranged at the position of the air outlet 12 and communicated with a display screen 15 beside the control valve. An insect-proof filter screen is arranged at the air inlet of the cold air pipe. In the embodiment, the whole flow dividing device is arranged on the air pipe, so that air is discharged from the air inlet to the air outlet, a flow dividing mark is arranged between the air inlet and the air outlet, and the flow dividing mark swings left and right to drain the air, so that the air is discharged from different air outlets; of course, in order to ensure that air pollution is not caused, an air purification device may be installed at the air outlet communicated with the external buffer, so that the emission meets the relevant requirements.
The utility model discloses desulfurization or deNOx systems flue gas baffle sealing system of case has following advantage:
a heater of a sealing fan is omitted, and clean smoke at the outlet of the induced draft fan is used as sealing air, so that the investment of equipment is reduced; the power consumption is reduced, and the operation cost is saved; and the temperature of the sealing air can not fluctuate along with the change of the flow, thereby simplifying the sealing air flow and reducing the failure points of the equipment. The valves are connected with the main control unit, and remote control and intelligent adjustment can be achieved.
The flue gas at the outlet of the induced draft fan is used for replacing air, the pipeline arrangement is convenient and the distance is short, the energy consumption can be effectively reduced, and the purposes of energy conservation and emission reduction are achieved.
The sealing air system is suitable for various occasions such as wet desulphurization, denitration, dry desulphurization baffles, semi-dry desulphurization baffles and the like.
The above is only the preferred embodiment of the present invention, and the description of the embodiment is only used to help understand the method and the core idea of the present invention, and to limit the protection scope of the present invention, any modification or equivalent replacement made within the idea and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The baffle door sealing system is characterized by comprising a sealing fan, a baffle door, a flow dividing device and an air pipe, wherein the air pipe comprises a cold air pipe and a hot air pipe, one end of the cold air pipe is communicated with external air, one end of the hot air pipe is communicated with a boiler induced draft fan, the other ends of the cold air pipe and the hot air pipe are communicated with the sealing fan, an air outlet of the sealing fan is connected with the baffle door, and the flow dividing device is fixedly installed on the air pipe.
2. The flapper door closure system of claim 1, wherein the diverter means includes a housing, a diverter vane and a control valve, the control valve and the diverter vane being respectively disposed on both the inner and outer sides of the housing, the housing being of a hollow configuration with an air duct disposed therein; one end of the shell is provided with an air inlet, the other end of the shell is provided with an air outlet, the flow dividing marks are arranged between the air inlet and the air outlet, and the two air outlets are respectively positioned on two sides of the flow dividing marks.
3. The flapper door closure system of claim 2, wherein the diverter valve cone structure has a top angle facing the air inlet side and abutting the air duct; the lower end of the branch flow indicator is movably pivoted on the inner side wall of the shell, and the branch flow indicator is driven to swing left and right under the action of the control valve and is abutted against the two sides of the air duct.
4. The flapper door closure system of claim 3, further comprising a flow sensor positioned at the outlet port, the flow sensor in communication with a display screen positioned adjacent the control valve.
5. The flapper door closure system of claim 1, wherein an insect screen is mounted at the air inlet of the cold air duct.
6. The flapper door closure system of claim 1, wherein the flapper door is a double-layer louvered flapper door having a control valve disposed adjacent the flapper door for controlling movement of the flapper door.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221749044.0U CN218154241U (en) | 2022-07-08 | 2022-07-08 | Baffle door closure system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221749044.0U CN218154241U (en) | 2022-07-08 | 2022-07-08 | Baffle door closure system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218154241U true CN218154241U (en) | 2022-12-27 |
Family
ID=84590841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221749044.0U Active CN218154241U (en) | 2022-07-08 | 2022-07-08 | Baffle door closure system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218154241U (en) |
-
2022
- 2022-07-08 CN CN202221749044.0U patent/CN218154241U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |