CN212869835U - Air blower system for adjusting outlet temperature of air preheater - Google Patents
Air blower system for adjusting outlet temperature of air preheater Download PDFInfo
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- CN212869835U CN212869835U CN202020690171.2U CN202020690171U CN212869835U CN 212869835 U CN212869835 U CN 212869835U CN 202020690171 U CN202020690171 U CN 202020690171U CN 212869835 U CN212869835 U CN 212869835U
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- air heater
- steam supply
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- heater
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- 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
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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Abstract
The utility model discloses an air heater system for adjusting air preheater outlet temperature, including the female pipe of air heater steam supply, the hydrophobic female pipe of air heater, a wind air heater and overgrate air heater, the female union coupling of air heater steam supply has the auxiliary steam supply pipeline, the exit end of auxiliary steam supply pipeline is provided with the steam supply electrically-operated gate, the export of the female pipe of air heater steam supply is linked together with the import of a wind air heater and overgrate air heater respectively, the export of a wind air heater and overgrate air heater all is linked together with the hydrophobic female pipe import of air heater, the inlet connection of the female pipe of air heater steam supply has closed water supply pipe, be provided with the electrically-operated gate of intaking on the closed water supply pipe, adopt the utility model discloses air heater system can reduce air preheater outlet temperature, makes boiler safe operation.
Description
Technical Field
The utility model belongs to the technical field of air heater, a fan system for adjusting air preheater exit temperature is related to.
Background
The air preheater is called as an air preheater for short in the industry, and has the function of exchanging heat between flue gas discharged from a flue at the tail part of a boiler and air entering the boiler so as to enable the air to reach a certain temperature, so that the economical efficiency of the boiler is facilitated, the energy consumption of the boiler is reduced, and meanwhile, the flue gas with a lower temperature is discharged into the air, and the influence degree on the environment is lower.
However, when the natural environment temperature is high, for example, in summer, due to the fact that the environment temperature is high and the fan does work, the temperature of air entering the boiler is high, even if the temperature of air at the inlet of the air preheater of the air heater is 50-60 ℃ after the air heater is out of operation, the difference between the temperature of the air entering the boiler and the temperature of flue gas discharged from a flue at the tail of the boiler is small, the heat exchange efficiency is reduced, the temperature of the flue gas at the outlet of the air preheater is far higher than a design value, and the boiler efficiency is reduced and the safe operation of the boiler is threatened under the condition. Therefore, people need to find a system capable of adjusting the temperature of the flue gas at the outlet of the air preheater so as to ensure that the boiler can safely and stably run at high temperature or low temperature.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an air blower system for adjusting air preheater exit temperature has solved the problem that current system of adjusting air preheater exit temperature can not reduce air preheater exit temperature.
The utility model provides an adopted technical scheme is, an air heater system for adjusting air preheater outlet temperature, including the female pipe of air heater steam supply, the hydrophobic female pipe of air heater, a wind air heater and overgrate air heater, the female union coupling of air heater steam supply has the auxiliary steam supply pipeline, and the exit end of auxiliary steam supply pipeline is provided with the steam supply electrically operated gate, and the export of the female pipe of air heater steam supply is linked together with the import of a wind air heater and overgrate air heater respectively, and the export of a wind air heater and overgrate air heater all is linked together with the hydrophobic female pipe import of air heater, and the inlet connection of the female pipe of air heater steam supply has the closed water supply pipe, is provided with the electrically operated gate of intaking on the closed water supply pipe.
The utility model is also characterized in that,
the outlet end of the main drainage pipe of the air heater is connected with a drainage water return pipeline, and a drainage electric door is arranged between the main drainage pipe of the air heater and the drainage water return pipeline.
The outlet end of the main drainage pipe of the air heater is connected with a closed water return pipe, and a return water electric door is arranged on the closed water return pipe.
The primary air heater is provided with a primary air port connected with the air preheater.
And a secondary air port connected with the air preheater is arranged on the secondary air heater.
The utility model has the advantages that the steam supply main pipe of the air heater is connected with the auxiliary steam supply pipeline, the outlet end of the auxiliary steam supply pipeline is provided with a steam supply electric door, the outlet of the steam supply main pipe of the air heater is respectively communicated with the inlets of the primary air heater and the secondary air heater, the outlets of the primary air heater and the secondary air heater are both communicated with the inlet of the drainage main pipe of the air heater, the inlet end of the steam supply main pipe of the air heater is connected with a closed water supply pipe, the water inlet electric door is arranged on the closed water supply pipe, the outlet temperature of the air preheater is adjusted by adopting closed water and hot steam, when the exhaust temperature is lower, the hot steam is introduced into the primary air heater and the secondary air heater, so that the temperature of the primary air and the secondary air entering the air preheater is raised, and the exhaust temperature is improved; when the exhaust gas temperature is higher, closed water is introduced into the primary air heater and the secondary air heater, so that the temperature of primary air and secondary air entering the air preheater is reduced, the exhaust gas temperature is reduced, the problem that the outlet temperature of the air preheater cannot be reduced by the conventional system for adjusting the outlet temperature of the air preheater is solved, the exhaust gas temperature is reduced when needed, and the safe operation of a unit can be ensured; is convenient for flexible adjustment and convenient operation.
Drawings
Fig. 1 is a schematic structural diagram of an air blower system for adjusting the outlet temperature of an air preheater according to the present invention.
In the figure, 1, an air preheater, 2, a primary air pipe, 3, a secondary air pipe, 4, a primary air heater, 5, a secondary air heater, 6, a steam supply main pipe of the air heater, 7, a drainage main pipe of the air heater, 8, an auxiliary steam supply pipeline, 9, a drainage water return pipeline, 10, a closed water supply pipe, 11, a closed water return pipe, 12, a steam supply electric door, 13, a drainage electric door, 14, a water inlet electric door and 15, a water return electric door.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The utility model relates to an air heater system for adjusting air preheater exit temperature, refer to fig. 1, including the female pipe 6 of air heater steam supply, the hydrophobic female pipe 7 of air heater, a wind air heater 4 and overgrate air heater 5, the female pipe 6 of air heater steam supply is connected with auxiliary steam supply pipeline 8, auxiliary steam supply pipeline 8's exit end is provided with steam supply electrically operated gate 12, the female pipe 6's of air heater steam supply export is linked together with the import of a wind air heater 4 and overgrate air heater 5 respectively, the export of a wind air heater 4 and overgrate air heater 5 all is linked together with the hydrophobic female pipe 7 import of air heater, the female pipe 6's of air heater steam supply inlet point is connected with closed water supply pipe 10, be provided with the electronic door 14 of intaking of regulation rivers size on the closed water supply pipe 10.
The outlet end of the main drainage pipe 7 of the air heater is connected with a drainage water return pipeline 9, and a drainage electric door 13 for adjusting the water flow is arranged between the main drainage pipe 7 of the air heater and the drainage water return pipeline 9.
The outlet end of the main drainage pipe 7 of the air heater is connected with a closed water return pipe 11, and a return water electric door 15 for adjusting the water flow is arranged on the closed water return pipe 11.
The primary air heater 4 is provided with a primary air port connected with the air preheater 1, and the secondary air heater 5 is provided with a secondary air port connected with the air preheater 1.
Use the utility model discloses during the air heater system for adjusting air preheater exit temperature, at the air heater 4 once wind gap of installation between 1 of air heater tuber pipe 2, install overgrate air pipe 3 between overgrate air wind gap and air heater 1 of overgrate air heater 5.
When the boiler exhaust gas temperature is lower (the cold end comprehensive temperature is lower than the design value of 5 ℃), open steam supply electrically operated gate 12 and hydrophobic electrically operated gate 13, assist steam supply pipeline 8 to deliver the hot steam of heating to air heater steam supply main pipe 6 and send to primary air heater 4 and overgrate air heater 5 in, hot steam and flue gas carry out the heat transfer, the heat after the cooling evaporates and gasifies into rivers to the hydrophobic main pipe 7 of air heater in, rivers advance hydrophobic return water pipeline 9, be convenient for retrieve reutilization. In this process, the water inlet power door 14 and the water return power door 15 are kept closed. Through heat exchange with hot steam, the air temperature is improved, so that the air temperature entering a hearth is improved, the boiler efficiency is improved, and the risk of low-temperature corrosion of the air preheater is reduced.
When the boiler exhaust gas temperature is higher (the cold end comprehensive temperature is higher than the design value 10 ℃), open the electrically operated gate of intaking 14 and return water 15, closed water flows to the warm air ware 4 of primary air and during the overgrate air warm-air device 5 through the warm air ware steam supply main pipe 6 in the closed water delivery pipe 10, closed water and the primary air in warm air ware 4 of primary air and the overgrate air warm-air device 5, the overgrate air carries out the heat transfer, closed water temperature after the heat transfer risees, get back to closed water return pipe 11 through the hydrophobic main pipe of warm air ware, this in-process, steam supply electrically operated gate 12 and hydrophobic electrically operated gate 13 keep the closed condition. After heat exchange, the temperature of primary air and secondary air is reduced, and then the air inlet temperature of the air preheater is reduced, so that the smoke exhaust temperature is reduced, the operation safety of a tail flue is improved, and the influence of high-temperature smoke on the environment is avoided.
When the exhaust gas temperature is not high or low, the steam supply electric door 12, the water drainage electric door 13, the water inlet electric door 14 and the water return electric door 15 are kept closed, and the primary air 2 and the secondary air 3 are not heated or cooled.
Claims (5)
1. The utility model provides an air heater system for adjusting air preheater outlet temperature, a serial communication port, including the main pipe of air heater steam supply (6), the main pipe of air heater drainage (7), primary air heater (4) and overgrate air heater (5), the main pipe of air heater steam supply (6) are connected with auxiliary steam supply pipeline (8), the exit end of auxiliary steam supply pipeline (8) is provided with steam supply electrically operated gate (12), the export of the main pipe of air heater steam supply (6) is linked together with the import of primary air heater (4) and overgrate air heater (5) respectively, the export of primary air heater (4) and overgrate air heater (5) all is linked together with the main pipe of air heater drainage (7) import, the entrance connection of the main pipe of air heater steam supply (6) has water closed supply pipe (10), be provided with into water electrically operated gate (14) on water supply pipe (10).
2. The air blower system for adjusting the outlet temperature of the air preheater according to claim 1, wherein a hydrophobic water return pipe (9) is connected to an outlet end of the hydrophobic main pipe (7) of the air blower, and a hydrophobic electric door (13) is arranged between the hydrophobic main pipe (7) of the air blower and the hydrophobic water return pipe (9).
3. The air blower system for adjusting the outlet temperature of the air preheater according to claim 2, wherein the outlet end of the air blower drainage main pipe (7) is connected with a closed water return pipe (11), and a return water electric door (15) is arranged on the closed water return pipe (11).
4. The air blower system for adjusting the outlet temperature of the air preheater as claimed in claim 1, wherein the primary air heater (4) is provided with a primary air port connected with the air preheater (1).
5. The air blower system for adjusting the outlet temperature of the air preheater as claimed in claim 1, wherein the secondary air heater (5) is provided with a secondary air port connected with the air preheater (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020690171.2U CN212869835U (en) | 2020-04-29 | 2020-04-29 | Air blower system for adjusting outlet temperature of air preheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020690171.2U CN212869835U (en) | 2020-04-29 | 2020-04-29 | Air blower system for adjusting outlet temperature of air preheater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212869835U true CN212869835U (en) | 2021-04-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020690171.2U Expired - Fee Related CN212869835U (en) | 2020-04-29 | 2020-04-29 | Air blower system for adjusting outlet temperature of air preheater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212869835U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113513766A (en) * | 2021-06-02 | 2021-10-19 | 西安热工研究院有限公司 | System for heating air heater by using waste heat of industrial steam supply and working method |
-
2020
- 2020-04-29 CN CN202020690171.2U patent/CN212869835U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113513766A (en) * | 2021-06-02 | 2021-10-19 | 西安热工研究院有限公司 | System for heating air heater by using waste heat of industrial steam supply and working method |
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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: 20210402 |
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| CF01 | Termination of patent right due to non-payment of annual fee |