CN204494471U - Install the pressure fan pre-heating system of drainage arrangement additional - Google Patents
Install the pressure fan pre-heating system of drainage arrangement additional Download PDFInfo
- Publication number
- CN204494471U CN204494471U CN201420860428.9U CN201420860428U CN204494471U CN 204494471 U CN204494471 U CN 204494471U CN 201420860428 U CN201420860428 U CN 201420860428U CN 204494471 U CN204494471 U CN 204494471U
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- Prior art keywords
- pressure fan
- air
- supply duct
- drain water
- water piping
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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 the pressure fan pre-heating system installing drainage arrangement additional, it comprises pressure fan, air preheater and steam air heater, the air outlet of described pressure fan is connected with the air inlet of air preheater by air supply duct, the minimum point place of described air supply duct is provided with drain water piping, one end of described drain water piping is communicated with described air supply duct, the other end of described drain water piping is connected with pressure fan trench, and described drain water piping is provided with hydrophobic valve.Advantage of the present utility model: solve pressure fan because of the problem that steam air heater is revealed or after the flushing of air preheater water, ponding is serious, substantially increase the security reliability of unit operation; Solve air supply duct and outlet damper etching problem that pressure fan causes because of inner ponding, the prior substantial risk hidden danger being that of avoiding blade bite, freezing, damage, fracture, improves pressure fan reliability of operation.
Description
Technical field:
The utility model relates to a kind of pressure fan pre-heating system, particularly relates to a kind of pressure fan pre-heating system installing drainage arrangement additional.
Background technology:
Because the northern area of China wintry weather is colder, cold air enters air preheater and easily causes cold end corrosion and knot ash, at present, we mainly through installing the mode of steam air heater additional between pressure fan outlet and air preheater entrance, to improve air preheater inlet air temperature.But the situation that booster is revealed frequently appears in steam air heater in During Process of Long-term Operation, the steam of leakage condenses into aqueous reflux in pressure fan outlet conduits, causes the inner ponding of pressure fan.Meanwhile, air preheater due to dust stratification serious, check or all need to carry out internal water flushing before maintenance at every turn, flushing water with the wind road flow to pressure fan, deposits at pressure fan outlet conduits.And pressure fan outlet conduits is inner because do not have draining system so ponding can not be discharged, cause pressure fan outlet conduits and outlet damper corrosion aggravation, shorten pressure fan outlet conduits service life.More seriously, in temperature district lower, after winter, blower fan stopped transport, ponding also can be caused to freeze, and the motor-driven tune blade that causes blowing freezes bite, even there is the danger of the blade that fractures, seriously have impact on the stable operation of unit.
Utility model content:
The purpose of this utility model be to provide a kind of can in time by the pressure fan pre-heating system installing drainage arrangement additional that the ponding in air supply duct is discharged.
The utility model is implemented by following technical scheme, install the pressure fan pre-heating system of drainage arrangement additional, it comprises pressure fan, air preheater and steam air heater, the air outlet of described pressure fan is connected with the air inlet of air preheater by air supply duct, outlet damper is provided with in the described air supply duct at the air outlet place of described pressure fan, described steam air heater is provided with in the described air supply duct of the air inlet of described air preheater, the minimum point place of described air supply duct is provided with drain water piping, one end of described drain water piping is communicated with described air supply duct, the other end of described drain water piping is connected with pressure fan trench, described drain water piping is provided with hydrophobic valve.
Advantage of the present utility model: by installing hydrophobic pipeline transformation additional to pressure fan outlet conduits, steam air heater generation booster is revealed or air preheater water rinse after can draining in time, solve pressure fan and to reveal because of steam air heater or air preheater water rinses the serious problem of rear ponding; Meanwhile, pressure fan drain water piping installs draining valve additional respectively, during normal operation, keep draining valve to close, after there is steam air heater booster, draining valve will open draining in time, avoids the problem that operating pressure fan is communicated with air, substantially increases the security reliability of unit operation.Solve air supply duct and outlet damper etching problem that pressure fan causes because of inner ponding, the prior substantial risk hidden danger being that of avoiding blade bite, freezing, damage, fracture, improves pressure fan reliability of operation.
Accompanying drawing illustrates:
Fig. 1 is pressure fan pre-heating system structural representation before transformation.
Fig. 2 is the pressure fan pre-heating system structural representation that the utility model installs drainage arrangement additional.
Pressure fan 1, air preheater 2, steam air heater 3, air supply duct 4, drain water piping 5, hydrophobic valve 6, outlet damper 7.
Detailed description of the invention:
Install the pressure fan pre-heating system of drainage arrangement additional, it comprises pressure fan 1, air preheater 2 and steam air heater 3, the air outlet of pressure fan 1 is connected with the air inlet of air preheater 2 by air supply duct 4, outlet damper 7 is provided with in the air supply duct 4 at the air outlet place of pressure fan 1, steam air heater 3 is provided with in the air supply duct 4 of the air inlet of air preheater 2, the minimum point place of air supply duct 4 is provided with drain water piping 5, one end of drain water piping 5 is communicated with air supply duct 4, the other end of drain water piping 5 is connected with pressure fan trench, and drain water piping 5 is provided with hydrophobic valve 6.During normal operation, hydrophobic valve 6 is closed, after steam air heater 3 booster or air preheater 2 rinse, hydrophobic valve 6 is opened, in time the ponding in drain water piping 5 is entered pressure fan trench.Hydrophobic transformation not only eliminates air supply duct 4 ponding problem, also solves the problem of environmental pollution that drain discharge causes.
Claims (1)
1. install the pressure fan pre-heating system of drainage arrangement additional, it comprises pressure fan, air preheater and steam air heater, the air outlet of described pressure fan is connected with the air inlet of air preheater by air supply duct, outlet damper is provided with in the described air supply duct at the air outlet place of described pressure fan, described steam air heater is provided with in the described air supply duct of the air inlet of described air preheater, it is characterized in that, the minimum point place of described air supply duct is provided with drain water piping, one end of described drain water piping is communicated with described air supply duct, the other end of described drain water piping is connected with pressure fan trench, described drain water piping is provided with hydrophobic valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420860428.9U CN204494471U (en) | 2014-12-30 | 2014-12-30 | Install the pressure fan pre-heating system of drainage arrangement additional |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420860428.9U CN204494471U (en) | 2014-12-30 | 2014-12-30 | Install the pressure fan pre-heating system of drainage arrangement additional |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204494471U true CN204494471U (en) | 2015-07-22 |
Family
ID=53573784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420860428.9U Active CN204494471U (en) | 2014-12-30 | 2014-12-30 | Install the pressure fan pre-heating system of drainage arrangement additional |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204494471U (en) |
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2014
- 2014-12-30 CN CN201420860428.9U patent/CN204494471U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |