CN202561795U - Air supply system of air pre-heater in power station - Google Patents
Air supply system of air pre-heater in power station Download PDFInfo
- Publication number
- CN202561795U CN202561795U CN2012201327996U CN201220132799U CN202561795U CN 202561795 U CN202561795 U CN 202561795U CN 2012201327996 U CN2012201327996 U CN 2012201327996U CN 201220132799 U CN201220132799 U CN 201220132799U CN 202561795 U CN202561795 U CN 202561795U
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- China
- Prior art keywords
- air
- air preheater
- wind
- heater
- power station
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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 supply system of an air pre-heater in a power station, comprising an air pre-heater, a primary air inlet pipe, a primary air outlet pipe, a secondary air inlet pipe, a secondary air outlet pipe, a flue gas air inlet pipe and a fuel gas air outlet pipe, wherein the primary air outlet pipe is provided with a first induced draft fan and the secondary air outlet pipe is provided with a second induced draft fan. By adopting the air supply system of an air pre-heater in a power station in the utility model, differential pressure of the two sides of the air pre-heater can be reduced, air leakage can be reduced, and the utilization efficiency of flue gas can be improved.
Description
Technical field
The utility model discloses a kind of auxiliary equipment of station boiler, be specifically related to a kind of supply air system of air preheater.
Background technology
Along with the raising of station boiler steam parameter and the increase of capacity; Usually need that configuration structure is compact, weight is light, the rotary regenerative air preheater of flexible arrangement; Wherein adopting maximum is the rotary regenerative air preheater that heating surface rotates; And rotary regenerative air preheater itself is a kind of rotary machine, exists certain clearance between the sound, directly has influence on the ratio of leaking out.
In the prior art, wind and secondary wind get into air preheater and adopt the pressure fan wind pushing form, and the wind and the secondary wind of the air preheater of flowing through are malleations, and the flue gas of air preheater opposite side is a negative pressure.In wind and secondary wind motion process, because there is bigger pressure reduction in the both sides of air preheater, make lower end and upper end at air preheater, most of air flow direction fume side causes the waste of energy.Show as: in the bottom, wind and secondary wind are cold wind, and the gap through the lower end flow into fume side, and intake is reduced, and pressure fan efficient is low, for satisfying air output, needs to increase the power of pressure fan; In the upper end of air preheater, from upper gap, flow to fume side through a wind after the preheating with the secondary wind part, cause the great amount of heat loss, and get into the air quantity minimizing of burner hearth.
The utility model content
The purpose of the utility model is to overcome above shortcoming, a kind of pressure reduction that can reduce the air preheater both sides is provided, thereby reduces inleakage, improves the supply air system of the power station air preheater of flue gas utilization efficient.
The technical scheme of the utility model is:
The supply air system of a kind of power station air preheater; Comprise air preheater, primary air intake pipe, wind discharge pipe, secondary air intake pipe, secondary wind discharge pipe, flue gas blast pipe, flue gas exhaust duct; A said wind discharge pipe is provided with first air-introduced machine, and said secondary wind discharge pipe is provided with second air-introduced machine.
Further, the power of said second air-introduced machine of the power ratio of said first air-introduced machine is little.
The supply air system of the power station air preheater that the utility model provides has following advantage:
Reduce the pressure reduction of air preheater both sides.The supply air system of the power station air preheater that the utility model provides; On wind discharge pipe of air preheater and secondary wind discharge pipe, air-introduced machine is installed respectively; Making blast and secondary blast in the air preheater is negative pressure state, and the fume side of air preheater is negative pressure state, therefore; Can significantly reduce the pressure reduction of air preheater both sides, reduce the inleakage that causes because of both sides pressure reduction.
Energy savings.In the bottom of air preheater, the amount that wind and secondary wind get into fume side reduces, and in air preheater, wind and secondary wind energy absorb the flue gas heat of fume side, realization pre-heat effect to greatest extent; When wind and secondary wind were flowed through the outlet of air preheater, the both sides pressure reduction of upper end reduced, and the amount that the hot blast after preheating gets into fume side reduces, thereby has improved the utilization ratio of flue gas heat.Simultaneously, because of inleakage in the air preheater reduces, the efficient of air-introduced machine improves.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment; To do to introduce simply to the accompanying drawing of required use among the embodiment below; Obviously, the accompanying drawing in describing below only is some embodiment of the utility model, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the schematic flow sheet of the utility model power station air preheater supply air system;
Reference numeral: 1-air preheater air side, 2-air preheater fume side, 3-primary air intake pipe, 4-secondary air intake pipe; Wind discharge pipe of 5-, 6-secondary wind discharge pipe, 7-flue gas blast pipe; 8-flue gas exhaust duct, 9-first air-introduced machine, 10-second air-introduced machine.
The specific embodiment
To combine the accompanying drawing among the utility model embodiment below, the technical scheme among the utility model embodiment is carried out clear, intactly description, obviously, described embodiment only is a part of embodiment of the utility model, rather than whole embodiment.Based on the embodiment of the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
The specific embodiment is following:
In conjunction with Fig. 1, the supply air system of a kind of power station air preheater comprises air preheater, a wind air intake; 3, wind discharge pipe 5, secondary air intake pipe 4, secondary wind discharge pipe 6, flue gas blast pipe 7, flue gas exhaust duct 8; Wherein, air preheater is divided into both sides, is respectively air preheater air side 1 and air preheater fume side 2; One time wind discharge pipe 5 is provided with first air-introduced machine 9, and secondary wind discharge pipe 6 is provided with second air-introduced machine 10.
One time wind discharge pipe 5 is connected with the burner hearth primary air intake pipe, and a wind after the air preheater preheating carries coal dust and gets into burner hearth; Secondary wind discharge pipe 6 is connected with the burner hearth secondary air intake pipe, and secondary wind is as replenishing air.
One time wind discharge pipe 5 is provided with first air-introduced machine 9, and secondary wind discharge pipe 6 is provided with second air-introduced machine 10, and what make air preheater air side 1 all is in negative pressure state into and out of airduct; Is negative pressure state because of air preheater fume side 2 into and out of airduct; Therefore, the pressure reduction of air preheater both sides is little, in the bottom and the upper end of air preheater; The inleakage that is caused by pressure reduction reduces, and the heat of fume side is fully used.
In running, because institute's required airflow of a wind is less than institute's required airflow of secondary wind, therefore, the power that is used for first air-introduced machine 9 of a wind can be littler than the power of second air-introduced machine 10 that is used for secondary wind, energy efficient.
Claims (2)
1. the supply air system of a power station air preheater; Comprise air preheater, primary air intake pipe, wind discharge pipe, secondary air intake pipe, secondary wind discharge pipe, flue gas blast pipe, flue gas exhaust duct; It is characterized in that; A said wind discharge pipe is provided with first air-introduced machine, and said secondary wind discharge pipe is provided with second air-introduced machine.
2. the supply air system of power station according to claim 1 air preheater is characterized in that, the power of said second air-introduced machine of the power ratio of said first air-introduced machine is little.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201327996U CN202561795U (en) | 2012-03-31 | 2012-03-31 | Air supply system of air pre-heater in power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201327996U CN202561795U (en) | 2012-03-31 | 2012-03-31 | Air supply system of air pre-heater in power station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202561795U true CN202561795U (en) | 2012-11-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201327996U Expired - Fee Related CN202561795U (en) | 2012-03-31 | 2012-03-31 | Air supply system of air pre-heater in power station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202561795U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104019695A (en) * | 2014-06-27 | 2014-09-03 | 上海市东方海事工程技术有限公司 | Laser-type air pre-heater air leakage control system and control method thereof |
| CN105020735A (en) * | 2015-07-10 | 2015-11-04 | 清华大学 | Suction-type rotary air preheater |
-
2012
- 2012-03-31 CN CN2012201327996U patent/CN202561795U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104019695A (en) * | 2014-06-27 | 2014-09-03 | 上海市东方海事工程技术有限公司 | Laser-type air pre-heater air leakage control system and control method thereof |
| CN104019695B (en) * | 2014-06-27 | 2016-02-24 | 上海市东方海事工程技术有限公司 | A kind of laser type air preheater air leak control system and control method thereof |
| CN105020735A (en) * | 2015-07-10 | 2015-11-04 | 清华大学 | Suction-type rotary air preheater |
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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: 20121128 Termination date: 20170331 |