CN203384999U - Inlet air heater of air preheater of generator set boiler - Google Patents
Inlet air heater of air preheater of generator set boiler Download PDFInfo
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- CN203384999U CN203384999U CN201320267351.XU CN201320267351U CN203384999U CN 203384999 U CN203384999 U CN 203384999U CN 201320267351 U CN201320267351 U CN 201320267351U CN 203384999 U CN203384999 U CN 203384999U
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- air heater
- air
- boiler
- heater
- steam
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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 inlet air heater of an air preheater of a generator set boiler and belongs to the technical field of air preheater devices. The inlet air heater is used for reducing the resistance of the air heater and effectively recycling the waste heat of the boiler. The technical scheme is that an outlet air flue of the air heater is vertically connected with an inlet air flue of the air preheater; a membrane type radiating tube bundle is mounted at the air flue wall of the air heater; fin radiating pipes are mounted at the air flue of the air heater; air inlets of the membrane type radiating tube bundle and the fin radiating pipes are communicated with an air heater gas source by pipelines; a heat source inlet header is mounted at the upper part of the air heater; a heat source outlet header is mounted at the lower part of the air heater; a boiler waste heat pipeline is connected with an inlet of the heat source inlet header; the membrane type radiating tube bundle and the fin radiating pipes are connected with the heat source inlet header and the heat source outlet header by pipelines. The inlet air heater of the air preheater of the generator set boiler has the advantages that the structure is simple, the use is convenient, the effect is excellent, the resistance of the air heater is reduced, the waste heat of the boiler is utilized, the temperature at the cold end of the air preheater is improved, and the steam consumption of the air heater is reduced.
Description
Technical field
The utility model relates to the full recuperation of heat air preheater entrance steam air heater of a kind of applicable 300MW and above generating set boiler, belongs to the air preheater equipment technical field.
Background technology
Air preheater is one of equipment of generating set boiler, and the effect of air preheater entrance steam air heater is that heating enters the air that boiler participates in burning, prevents in the situation that the low air preheater heat accumulating element that causes of entrance wind-warm syndrome produces cold end corrosion.The problem that the air preheater entrance steam air heater used at present exists is as follows:
1) the air preheater entrance steam air heater of traditional 300MW and above generating set boiler is rearranged by many groups of intensive Round fin radiating tubes, and windage is high, and in general, the windage of a wind side can be up to the 500Pa left and right.
2) the air preheater entrance steam air heater of traditional 300MW and above generating set boiler is horizontal positioned, the inclination certain angle, and impeded drainage, easily cause water attack.
3) tube wall of air preheater entrance steam air heater is thin, and water attack often occurs, and leaks frequently, affects stable operation.
4) there are continuous blowdown in 300MW and above generating set boiler in normal course of operation, and boiler soot-blowing discharges water, and the large waste heat of companion's thermal drain three, all directly drain by former design, do not utilized, and has serious energy waste.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of generating set boiler air preheater entrance steam air heater, this air preheater entrance steam air heater is applicable to 300MW and above generating set boiler is used, can reduce the steam air heater resistance, and boiler afterheat is effectively reclaimed.
The technical scheme solved the problems of the technologies described above is:
A kind of generating set boiler air preheater entrance steam air heater, its steam air heater is positioned at the below in air preheater entrance air channel, the outlet air channel of steam air heater and vertical connection of air preheater entrance air channel, membrane type radiating tube row is installed on the wind path wall of steam air heater, in the air channel of steam air heater, tuberculated pipe is installed, the air inlet of membrane type radiating tube row and tuberculated pipe is connected with the steam air heater source of the gas by pipeline.
Above-mentioned generating set boiler air preheater entrance steam air heater, the top of described steam air heater is equipped with the thermal source influent header, the bottom of steam air heater is equipped with the thermal source outlet header, the boiler afterheat pipeline is connected with the import of thermal source influent header, the membrane type radiating tube row be connected with the thermal source influent header by pipeline with the air inlet of tuberculated pipe, and the membrane type radiating tube row be connected with the thermal source outlet header with the exhaust outlet of tuberculated pipe.
Above-mentioned generating set boiler air preheater entrance steam air heater, described membrane type radiating tube row is arranged on the one side of steam air heater wind path wall, or is arranged on two sides or three or the four sides of steam air heater wind path wall.
Above-mentioned generating set boiler air preheater entrance steam air heater, described tuberculated pipe is one or more groups.
The beneficial effects of the utility model are:
The utility model is removed original Round fin radiating tube on the steam air heater tube wall, is replaced by by membrane type radiating tube row, and duct dimension and cross-sectional area are constant, have reduced the resistance formed because flowing through Round fin radiating tube tube wall, reach the purpose that reduces windage; The steam air heater air channel is vertically mounted on the below of air preheater, and draining is smooth and easy, can not cause water attack; Boiler all main waste heats comprises continuous blowdown, blows that ash is hydrophobic, the waste heat of companion's thermal drain is pooled to steam air heater and heats the air that enters boiler, reaches the purpose of full recuperation of heat.The utility model is simple in structure, easy to use, respond well, has reduced the steam air heater resistance, has utilized again boiler afterheat, has improved the air preheater cold junction temperature, has reduced the steam air heater steam consumption.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure, mark is as follows: steam air heater 1, membrane type radiating tube row 2, tuberculated pipe 3, air preheater entrance air channel 4, steam air heater source of the gas 5, thermal source influent header 6, thermal source outlet header 7, boiler afterheat pipeline 8, air inlet 9.
The specific embodiment
In figure, show, steam air heater 1 is positioned at the below in air preheater entrance air channel 4, the outlet air channel of steam air heater 1 and 4 vertical connections of air preheater entrance air channel, and its advantage is that draining is smooth and easy, can not cause water attack.
Show in figure, original Round fin radiating tube on steam air heater 1 tube wall is removed, be replaced by by membrane type radiating tube row 2, duct dimension and cross-sectional area are constant, have reduced the resistance formed because flowing through Round fin radiating tube tube wall, reach the purpose that reduces windage.Tuberculated pipe 3 also is installed in the air channel of steam air heater 1.The air inlet of membrane type radiating tube row 2 and tuberculated pipe 3 is connected with steam air heater source of the gas 5 by pipeline.
Membrane type radiating tube row 2 can be arranged on the one side of steam air heater 1 wind path wall, also can be arranged on two sides or three or the four sides of steam air heater 1 wind path wall.Tuberculated pipe 3 can be one or more groups.
In figure, show, in order to realize taking full advantage of boiler afterheat, the top of steam air heater 1 is equipped with thermal source influent header 6, the bottom of steam air heater 1 is equipped with thermal source outlet header 7, boiler afterheat pipeline 8 is connected with the import of thermal source influent header 6, membrane type radiating tube row 2 is connected with thermal source influent header 6 by pipeline with the air inlet of tuberculated pipe 3, and the exhaust outlet of membrane type radiating tube row 2 and tuberculated pipe 3 is connected for 7 the casees with thermal source outlet connection.
Boiler afterheat enters by thermal source influent header 6, membrane type radiating tube row 2 and tuberculated pipe 3, high-temperature steam and the thermogenetic high temperature carbonated drink of boiler residual medium that membrane type radiating tube row 2 and tuberculated pipe 3 inside are steam air heater vapour source 5, these heats pass to the air of flowing through in steam air heater 1 air channel by tube wall, both reached the purpose that adds hot-air, also boiler afterheat had been carried out to effective utilization.
Claims (4)
1. a generating set boiler air preheater entrance steam air heater, it is characterized in that: its steam air heater (1) is positioned at the below in air preheater entrance air channel (4), the outlet air channel of steam air heater (1) and vertical connection of air preheater entrance air channel (4), membrane type radiating tube row (2) is installed on the wind path wall of steam air heater (1), tuberculated pipe (3) is installed in the air channel of steam air heater (1), and the air inlet of membrane type radiating tube row (2) and tuberculated pipe (3) is connected with steam air heater source of the gas (5) by pipeline.
2. generating set boiler air preheater entrance steam air heater according to claim 1, it is characterized in that: the top of described steam air heater (1) is equipped with thermal source influent header (6), the bottom of steam air heater (1) is equipped with thermal source outlet header (7), boiler afterheat pipeline (8) is connected with the import of thermal source influent header (6), the air inlet of membrane type radiating tube row (2) and tuberculated pipe (3) is connected with thermal source influent header (6) by pipeline, the exhaust outlet of membrane type radiating tube row (2) and tuberculated pipe (3) is connected with thermal source outlet header (7).
3. generating set boiler air preheater entrance steam air heater according to claim 2, it is characterized in that: described membrane type radiating tube row (2) is arranged on the one side of steam air heater (1) wind path wall, or is arranged on two sides or three or the four sides of steam air heater (1) wind path wall.
4. generating set boiler air preheater entrance steam air heater according to claim 3 is characterized in that: described tuberculated pipe (3) is one or more groups.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320267351.XU CN203384999U (en) | 2013-05-16 | 2013-05-16 | Inlet air heater of air preheater of generator set boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320267351.XU CN203384999U (en) | 2013-05-16 | 2013-05-16 | Inlet air heater of air preheater of generator set boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203384999U true CN203384999U (en) | 2014-01-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320267351.XU Expired - Fee Related CN203384999U (en) | 2013-05-16 | 2013-05-16 | Inlet air heater of air preheater of generator set boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203384999U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105423331A (en) * | 2015-11-20 | 2016-03-23 | 张建存 | Boiler inlet air preheating device with siliencing function |
-
2013
- 2013-05-16 CN CN201320267351.XU patent/CN203384999U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105423331A (en) * | 2015-11-20 | 2016-03-23 | 张建存 | Boiler inlet air preheating device with siliencing function |
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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: 20140108 Termination date: 20160516 |