CN205480930U - Utilize preheating of air system of thermal de aeration feedwater - Google Patents
Utilize preheating of air system of thermal de aeration feedwater Download PDFInfo
- Publication number
- CN205480930U CN205480930U CN201620302868.1U CN201620302868U CN205480930U CN 205480930 U CN205480930 U CN 205480930U CN 201620302868 U CN201620302868 U CN 201620302868U CN 205480930 U CN205480930 U CN 205480930U
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- air
- outlet
- water
- pipe
- steam boiler
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Abstract
The utility model provides an utilize preheating of air system of thermal de aeration feedwater, air heater include the heat transfer chamber and with cold air inlet, heat outlet, hot water import and the cooling water outlet of heat transfer chamber intercommunication, cold air inlet communicates the air exit of air -blower, the heat outlet communicates the air inlet of combustor, hot water import communicates the outlet of oxygen -eliminating device, the cooling water inlet of economizer surface tube bank and air heater's cooling water outlet intercommunication, the hot water export that the facial canal that is heated was restrainted communicates steam boiler's water inlet. Has following advantage: effectively improve air heater's heat exchange efficiency, both improved the temperature that gets into the combustion air of combustor, reduced the ignition heat loss, the also effectual boiler exhaust gas temperature that has reduced, in addition, the volume that has reduced air heater effectively is area, reduces tail flue gas business turn over air heater's flue and arranges to system's cost has been reduced.
Description
Technical field
The utility model belongs to air preheat technical field, is specifically related to a kind of sky utilizing thermal de-aeration to feed water
Gas pre-heating system.
Background technology
The air preheater of steam boiler system is the heat burner utilizing boiler tail high-temperature flue gas
Normal temperature combustion air, while reducing afterbody exhaust gas temperature, improves the temperature of combustion air, thus improves combustion
The heat-exchange device of fuel economy.
But, the air preheater of existing steam boiler system is primarily present following deficiency: (1) gas it
Between thermal conductivity relatively low, it is impossible to more effectively heat exchange；(2) volume of air preheater is relatively big, needs in system
Flue to be arranged is longer, thus adds system cost.
Utility model content
The defect existed for prior art, the utility model provides a kind of air utilizing thermal de-aeration to feed water
Pre-heating system, can effectively solve the problems referred to above.
The technical solution adopted in the utility model is as follows:
The utility model provides a kind of air preheating system utilizing thermal de-aeration to feed water, including: air preheat
Device, oxygen-eliminating device, combustor, economizer and steam boiler；Wherein, described combustor includes that burner is with outer
The air blast put；
Described air preheater include heat exchanging chamber and the cold air import connected with described heat exchanging chamber, heat outlet,
Hot water inlet and cooling water outlet；Described cold air inlet communication is to the exhaust outlet of described air blast；Described hot gas
Outlet is to the burning of the air inlet of described burner, the exhaust outlet of described burner and described steam boiler
Room connects；Described hot water inlet is communicated to the discharge outlet of described oxygen-eliminating device；
Described economizer is installed on the smoke evacuation back-end ductwork of described steam boiler, including heated surface bundle, institute
State heated surface bundle and there is cooling water inlet and hot water outlet；The cooling water inlet of described heated surface bundle and described sky
The cooling water outlet connection of air preheater, the hot water outlet of described heated surface bundle is communicated to described steam boiler
Water inlet, for injecting hot water to described steam boiler.
Preferably, the 1st bypass water-supply-pipe is also included；
One end of described 1st bypass water-supply-pipe is communicated to defeated between described air preheater of described oxygen-eliminating device
On waterpipe；Described 1st bypass water-supply-pipe the other end be communicated to described air preheater to described economizer it
Between aqueduct on.
Preferably, the 2nd bypass water-supply-pipe is also included；
One end of described 2nd bypass water-supply-pipe is communicated to defeated between described economizer of described air preheater
On waterpipe；The other end of described 2nd bypass water-supply-pipe is communicated to described economizer between described steam boiler
Aqueduct on.
The air preheating system utilizing thermal de-aeration to feed water that the utility model provides has the advantage that
It is effectively increased the heat exchange efficiency of air preheater, both improves the temperature of the combustion air entering burner
Degree, reduces igniting heat loss；Also exhaust gas temperature is effectively reduced；It addition, efficiently reduce
The volume of air preheater i.e. floor space, reduces the flue layout of tail flue gas turnover air preheater, from
And reduce system cost.
Accompanying drawing explanation
The structural representation of the air preheating system utilizing thermal de-aeration to feed water that Fig. 1 provides for the utility model.
Detailed description of the invention
In order to make the utility model be solved the technical problem that, technical scheme and beneficial effect clearer,
Below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that herein
Described specific embodiment, only in order to explain the utility model, is not used to limit the utility model.
Existing air preheater heat exchange thermal source is improved by the utility model, by original economizer (joint
Can device) boiler tail flue gas and the combustion air heat exchange discharged, be modified to boiler feedwater that oxygen-eliminating device discharges with
Combustion air heat exchange, after heat exchange completes, combustion air temperature improves, and enters burner and reduces igniting heat waste
Losing, the boiler feed temperature that oxygen-eliminating device is discharged simultaneously reduces, and low temperature boiler feedwater enters economizer and high temperature pot
Stove tail flue gas completes heat convection, effectively reduces exhaust gas temperature.
In conjunction with Fig. 1, the utility model provides a kind of air preheating system utilizing thermal de-aeration to feed water, including:
Air preheater, oxygen-eliminating device, combustor, economizer and steam boiler；Wherein, combustor includes burner
With external air blast；Air preheater includes heat exchanging chamber and the cold air import connected with heat exchanging chamber, hot gas
Outlet, hot water inlet and cooling water outlet；Cold air inlet communication is to the exhaust outlet of air blast；Heat outlet is even
Lead to the air inlet of burner, the exhaust outlet of burner and the combustion chamber of steam boiler；Hot water inlet is even
Lead to the discharge outlet of oxygen-eliminating device；
Economizer is installed on the smoke evacuation back-end ductwork of steam boiler, including heated surface bundle, heated surface bundle
There is cooling water inlet and hot water outlet；The cooling water inlet of heated surface bundle connects with the cooling water outlet of air preheater
Logical, the hot water outlet of heated surface bundle is communicated to the water inlet of steam boiler, for injecting heat to steam boiler
Water.
It addition, also include the 1st bypass water-supply-pipe；See the mark 1 of Fig. 1, be the 1st bypass water-supply-pipe；1st is other
One end of road water-supply-pipe is communicated to oxygen-eliminating device to the aqueduct between air preheater；1st bypass water-supply-pipe
The other end be communicated to air preheater to the aqueduct between economizer.
Also include the 2nd bypass water-supply-pipe；See the mark 2 of Fig. 1, be the 2nd bypass water-supply-pipe；2nd bypass water delivery
One end of pipe is communicated to air preheater to the aqueduct between economizer；2nd bypasses another of water-supply-pipe
End is communicated to economizer to the aqueduct between steam boiler.
By installing the 1st bypass water-supply-pipe and the 2nd bypass water-supply-pipe, the flexibility that system uses can be increased.
In the utility model, steam boiler is by the equipment of steam needed for fuel combustion heating water generation user；
Economizer is for being connected with boiler back end ductwork, improves the equipment of boiler feed temperature；Oxygen-eliminating device be for
The equipment of deaerated water is provided to boiler.Air preheater is for realizing setting of deaerated water and combustion air heat exchange
Standby.
The operation principle of the above-mentioned air preheating system utilizing thermal de-aeration to feed water is: the boiler that oxygen-eliminating device is discharged
The combustion air that feedwater is discharged with air blast carries out heat exchange, after heat exchange completes, combustion-supporting sky in air preheater
Temperature improves, and enters back into burner, thus reduces igniting heat loss；Boiler feed temperature reduces, shape
Becoming low temperature boiler feedwater, low temperature boiler feedwater enters economizer and completes heat convection with high-temperature boiler tail flue gas,
Effectively reduce exhaust gas temperature, form high-temperature boiler feedwater after low temperature boiler feedwater heat exchange, reinject
To steam boiler.
As can be seen here, the air preheating system utilizing thermal de-aeration to feed water that the utility model provides has following
Advantage:
It is effectively increased the heat exchange efficiency of air preheater, both improves the temperature of the combustion air entering burner
Degree, reduces igniting heat loss；Also exhaust gas temperature is effectively reduced；It addition, efficiently reduce
The volume of air preheater i.e. floor space, reduces the flue layout of tail flue gas turnover air preheater, from
And reduce system cost.
The above is only preferred embodiment of the present utility model, it is noted that for the art
For those of ordinary skill, on the premise of without departing from the utility model principle, it is also possible to make some improvement
And retouching, these improvements and modifications also should regard protection domain of the present utility model.
Claims (3)
1. the air preheating system utilizing thermal de-aeration to feed water, it is characterised in that including: air preheat
Device, oxygen-eliminating device, combustor, economizer and steam boiler；Wherein, described combustor includes that burner is with outer
The air blast put；
Described air preheater include heat exchanging chamber and the cold air import connected with described heat exchanging chamber, heat outlet,
Hot water inlet and cooling water outlet；Described cold air inlet communication is to the exhaust outlet of described air blast；Described hot gas
Outlet is to the burning of the air inlet of described burner, the exhaust outlet of described burner and described steam boiler
Room connects；Described hot water inlet is communicated to the discharge outlet of described oxygen-eliminating device；
Described economizer is installed on the smoke evacuation back-end ductwork of described steam boiler, including heated surface bundle, institute
State heated surface bundle and there is cooling water inlet and hot water outlet；The cooling water inlet of described heated surface bundle and described sky
The cooling water outlet connection of air preheater, the hot water outlet of described heated surface bundle is communicated to described steam boiler
Water inlet, for injecting hot water to described steam boiler.
The air preheating system utilizing thermal de-aeration to feed water the most according to claim 1, it is characterised in that
Also include the 1st bypass water-supply-pipe；
One end of described 1st bypass water-supply-pipe is communicated to defeated between described air preheater of described oxygen-eliminating device
On waterpipe；Described 1st bypass water-supply-pipe the other end be communicated to described air preheater to described economizer it
Between aqueduct on.
The air preheating system utilizing thermal de-aeration to feed water the most according to claim 1, it is characterised in that
Also include the 2nd bypass water-supply-pipe；
One end of described 2nd bypass water-supply-pipe is communicated to defeated between described economizer of described air preheater
On waterpipe；The other end of described 2nd bypass water-supply-pipe is communicated to described economizer between described steam boiler
Aqueduct on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620302868.1U CN205480930U (en) | 2016-04-12 | 2016-04-12 | Utilize preheating of air system of thermal de aeration feedwater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620302868.1U CN205480930U (en) | 2016-04-12 | 2016-04-12 | Utilize preheating of air system of thermal de aeration feedwater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205480930U true CN205480930U (en) | 2016-08-17 |
Family
ID=56640369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620302868.1U Expired - Fee Related CN205480930U (en) | 2016-04-12 | 2016-04-12 | Utilize preheating of air system of thermal de aeration feedwater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205480930U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107036073A (en) * | 2017-05-11 | 2017-08-11 | 博瑞特热能设备股份有限公司 | Boiler circulatory system |
-
2016
- 2016-04-12 CN CN201620302868.1U patent/CN205480930U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107036073A (en) * | 2017-05-11 | 2017-08-11 | 博瑞特热能设备股份有限公司 | Boiler circulatory system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160817 Termination date: 20210412 |