CN202501494U - Enamel tube air preheater - Google Patents
Enamel tube air preheater Download PDFInfo
- Publication number
- CN202501494U CN202501494U CN2012200455342U CN201220045534U CN202501494U CN 202501494 U CN202501494 U CN 202501494U CN 2012200455342 U CN2012200455342 U CN 2012200455342U CN 201220045534 U CN201220045534 U CN 201220045534U CN 202501494 U CN202501494 U CN 202501494U
- Authority
- CN
- China
- Prior art keywords
- air
- temperature section
- bobbin carriage
- wind
- enamel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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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
Abstract
An enamel tube air preheater comprises a primary air low temperature section tube box (1), a secondary air low temperature section tube box (4), a secondary air high temperature section tube box (5), a primary air high temperature section tube box (8), a primary-air air channel (10), and a second-air air channel (11); wherein, the primary air low temperature section tube box, the secondary air low temperature section tube box, the secondary air high temperature section tube box, and the primary air high temperature section tube box are overlapped successively to assemble together, and are fixed by a steel frame; heat exchange tubes in the primary air low temperature section tube box (1) are enamel tubes (12), wherein, an inner layer of the enamel tube is made by carbon steel, an outer surface of the enamel tube is provided with an enamel layer, two ends of the enamel tube are respectively sealed and connected by using a carbon sealing ring (14) and a tube plate (13). Compared with a common steel tube air preheater, the enamel tube air preheater of the utility model has the advantages of corrosion resistance, wear resistance, small resistance, uneasy ash deposition, good heat transfer performance, convenient installation and maintenance, etc.
Description
Technical field
The utility model relates to the structure of the heat transmission equipment in a kind of boiler plant, a kind of Air Preheaters with Enamelled Tubers.
Background technology
In steam power plant; Normal air preheater (being called for short " air preheater ") adopts the shell-and-tube heat exchanger structure; Air flows in pipe, and flue gas flows outside pipe, and its low-temperature zone heat exchanger tube often corrodes because of the sulfuric acid vapor dewfall; Cause and leak out and dust stratification, influenced the safety and economic operation of boiler unit.When particularly using sulphur coal, the stifled ash of corrosion is particularly serious, and most of pipe is corroded, and makes the low-temperature zone of air preheater be no more than 1 year service life.
Summary of the invention
The utility model is intended to propose a kind of Air Preheaters with Enamelled Tubers, can be under the prerequisite that guarantees heat transfer property, and corrosion-resistant, wear-resistant, few dust stratification.
This Air Preheaters with Enamelled Tubers comprises wind low-temperature zone bobbin carriage, secondary wind low-temperature zone bobbin carriage, secondary wind high temperature section bobbin carriage, wind high temperature section bobbin carriage, wind air channel and secondary wind air channel.One time wind low-temperature zone bobbin carriage, secondary wind low-temperature zone bobbin carriage, secondary wind high temperature section bobbin carriage and a wind high temperature section bobbin carriage are superimposed successively and fit together, and are fixed by steelframe.The air outlet slit of a wind low-temperature zone bobbin carriage is linked to each other by a wind air channel with the air intlet of a wind high temperature section bobbin carriage, and the air outlet slit of secondary wind low-temperature zone bobbin carriage is linked to each other by the secondary wind air channel with the air intlet of secondary wind high temperature section bobbin carriage.Heat exchanger tube in wind low-temperature zone bobbin carriage is an enamel pipe, and the internal layer of this enamel pipe is a carbon steel, and outer surface has enamel layer, and the two ends of enamel pipe are tightly connected with tube sheet with the carbon sealing ring respectively mutually.
This Air Preheaters with Enamelled Tubers is because the heat exchanger tube in wind low-temperature zone bobbin carriage adopts enamel pipe, with the common steel tube air preheater relatively, have following characteristics:
1) corrosion-resistant.The main component of enamel is a silica, and content is up to about 80%, and its chemical stability, acid-alkali-corrosive-resisting ability are far longer than metal tube, and the low-temperature zone of Air Preheaters with Enamelled Tubers can reach 3～4 years service life.
2) wear-resistant.The hardness of enamel layer is several times of A3 steel hardness, has good abrasion resistance.
3) resistance is little, is difficult for dust stratification.Enamel layer smooth surface, long-play also are not easy dust stratification, and the flow of flue gas resistance is little.
4) good heat-transfer.The enamel pipe surface is not easy dust stratification, and its heat transfer property does not have to change basically, compare with common steel tube, the thermal resistance of enamel pipe with have the thermal resistance of the common steel tube of dirt to be more or less the same.
5) installation, easy to maintenance.Need not weld between enamel pipe and the tube sheet, adopt the carbon seal ring seal to connect, easy accessibility, sealing is reliable.
Description of drawings
Fig. 1 is the structure chart of this Air Preheaters with Enamelled Tubers;
Fig. 2 is the side view of Air Preheaters with Enamelled Tubers;
Fig. 3 is the partial enlarged drawing at I place;
Fig. 4 is the connected mode sketch map of enamel pipe end and tube sheet.
The specific embodiment
As depicted in figs. 1 and 2, this Air Preheaters with Enamelled Tubers comprises wind low-temperature zone bobbin carriage 1, secondary wind low-temperature zone bobbin carriage 4, secondary wind high temperature section bobbin carriage 5, wind high temperature section bobbin carriage 8, a wind air channel 10 and a secondary wind air channel 11.One time wind low-temperature zone bobbin carriage, secondary wind low-temperature zone bobbin carriage, secondary wind high temperature section bobbin carriage and a wind high temperature section bobbin carriage are superimposed successively and fit together, and are fixed by steelframe 9.The air outlet slit of a wind low-temperature zone bobbin carriage 1 is linked to each other by a wind air channel 10 with the air intlet of a wind high temperature section bobbin carriage 8, and the air outlet slit of secondary wind low-temperature zone bobbin carriage 4 is linked to each other by secondary wind air channel 11 with the air intlet of secondary wind high temperature section bobbin carriage 5.As shown in Figure 3, the heat exchanger tube in wind low-temperature zone bobbin carriage 1 is an enamel pipe 12, and the internal layer of this enamel pipe is a carbon steel, and outer surface has enamel layer, and is as shown in Figure 4, and the two ends of enamel pipe 12 are respectively with carbon sealing ring 14 be tightly connected mutually with tube sheet 13 (connecing sealing) for rising.The heat exchanger tube of the secondary wind low-temperature zone bobbin carriage in this Air Preheaters with Enamelled Tubers, secondary wind high temperature section bobbin carriage and a wind high temperature section bobbin carriage still adopts carbon steel pipe, is connected with the method for tube sheet with welding.2,3,6,7 is space between the bobbin carriage among the figure.
The course of work of this Air Preheaters with Enamelled Tubers is as depicted in figs. 1 and 2; Walk wind and secondary wind in the air preheater pipe; Walk flue gas outside the pipe; Wind and secondary wind get into from wind low-temperature zone of air preheater and secondary wind low-temperature zone respectively, come out with the secondary wind high temperature section from a wind high temperature section of air preheater, and the entering boiler furnace is combustion-supporting.Hot flue gas gets into from the air preheater high temperature section, comes out from the air preheater low-temperature zone, discharges boiler.
Claims (1)
1. Air Preheaters with Enamelled Tubers; Comprise a wind low-temperature zone bobbin carriage (1), secondary wind low-temperature zone bobbin carriage (4), secondary wind high temperature section bobbin carriage (5), a wind high temperature section bobbin carriage (8), a wind air channel (10) and secondary wind air channel (11); One time wind low-temperature zone bobbin carriage, secondary wind low-temperature zone bobbin carriage, secondary wind high temperature section bobbin carriage and a wind high temperature section bobbin carriage are superimposed successively and fit together; Fix by steelframe; The air outlet slit of a wind low-temperature zone bobbin carriage is linked to each other by a wind air channel with the air intlet of a wind high temperature section bobbin carriage; The air outlet slit of secondary wind low-temperature zone bobbin carriage is linked to each other by the secondary wind air channel with the air intlet of secondary wind high temperature section bobbin carriage, it is characterized in that the heat exchanger tube in the described wind low-temperature zone bobbin carriage (1) is enamel pipe (12), and the internal layer of this enamel pipe is a carbon steel; Outer surface has enamel layer, and the two ends of enamel pipe use carbon sealing ring (14) to be tightly connected mutually with tube sheet (13) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200455342U CN202501494U (en) | 2012-02-11 | 2012-02-11 | Enamel tube air preheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200455342U CN202501494U (en) | 2012-02-11 | 2012-02-11 | Enamel tube air preheater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202501494U true CN202501494U (en) | 2012-10-24 |
Family
ID=47038107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200455342U Expired - Lifetime CN202501494U (en) | 2012-02-11 | 2012-02-11 | Enamel tube air preheater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202501494U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106196128A (en) * | 2016-08-31 | 2016-12-07 | 哈尔滨锅炉厂有限责任公司 | For reclaiming the device of low-temperature flue gas heat and reclaiming thermal methods |
| CN106225004A (en) * | 2016-08-30 | 2016-12-14 | 江苏国信泗阳生物质发电有限公司 | A kind of enamel elliptical tube air preheater and installation method |
-
2012
- 2012-02-11 CN CN2012200455342U patent/CN202501494U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106225004A (en) * | 2016-08-30 | 2016-12-14 | 江苏国信泗阳生物质发电有限公司 | A kind of enamel elliptical tube air preheater and installation method |
| CN106196128A (en) * | 2016-08-31 | 2016-12-07 | 哈尔滨锅炉厂有限责任公司 | For reclaiming the device of low-temperature flue gas heat and reclaiming thermal methods |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121024 |
|
| CX01 | Expiry of patent term |