CN202470103U - Enamel tube sheet type air preheater - Google Patents
Enamel tube sheet type air preheater Download PDFInfo
- Publication number
- CN202470103U CN202470103U CN2012200512415U CN201220051241U CN202470103U CN 202470103 U CN202470103 U CN 202470103U CN 2012200512415 U CN2012200512415 U CN 2012200512415U CN 201220051241 U CN201220051241 U CN 201220051241U CN 202470103 U CN202470103 U CN 202470103U
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- CN
- China
- Prior art keywords
- tube
- heat exchanger
- heat exchange
- air preheater
- tube sheet
- 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 - Fee Related
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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 enamel tube sheet type air preheater, comprising a plurality of heat exchange tubes, wherein two ends of each heat exchange tube are respectively connected to two tube sheets; and inner and outer surfaces of tube walls of each heat exchange tube are respectively provided with an enamel layer. The two tube sheets are respectively provided with heat exchange tube plug-in holes having the same number with the heat exchange tubes; the plurality of heat exchange tubes are sequentially inserted into the heat exchange tube plug-in holes of one tube sheet via a soft graphite gasket sleeved at a respective end; and the plurality of heat exchange tubes are sequentially inserted into the heat exchange tube plug-in holes of the other tube sheet via a soft graphite gasket sleeved at the other respective end. The enamel tube sheet type air preheater has the advantages of long service life and convenience for maintenance.
Description
Technical field
The utility model relates to a kind of boiler corollary equipment, is specifically related to a kind of enamel pipe plate air preheater.
Background technology
Traditional air preheater comprises many steel heat exchanger tubes, and the two ends of each heat exchanger tube are welded on respectively on two tube sheets.The deficiency of above-mentioned air preheater is can cause the heat exchanger tube wall temperature to be lower than dew-point temperature when boiler during in blowing out or misoperation, produces cold end corrosion; Cause preheater to leak out, increase the air-introduced machine load, reduce boiler load; Shorten preheater service life, make the boiler can not normal combustion.In addition, the two ends of heat exchanger tube are welded on respectively on two tube sheets, when heat exchanger tube damages, are difficult for changing the maintenance trouble.
Summary of the invention
One of technical problem that the utility model will solve provides a kind of air preheater of long service life.
For solving the problems of the technologies described above; The technical scheme of the utility model is following: the enamel pipe plate air preheater comprises many heat exchanger tubes; The two ends of each heat exchanger tube are connected on two tube sheets, and its design feature is: respectively be provided with enamel layer on the inside and outside surface of each heat exchanger tube tube wall.
Two of the technical problem that the utility model will solve provides a kind of air preheater easy to maintenance.
For realizing above-mentioned purpose; Doing following improvement on the basis of technique scheme: promptly be equipped with the heat exchanger tube plug-in opening that quantity equates with the quantity of heat exchanger tube on two tube sheets; The soft packing ring of graphite of an end is inserted in the heat exchanger tube plug-in opening on the tube sheet many heat exchanger tubes successively through being sleeved on separately, and the soft packing ring of graphite of the other end is inserted in the heat exchanger tube plug-in opening on another tube sheet many heat exchanger tubes successively through being sleeved on separately.
Owing on the inside and outside surface of heat exchanger tube tube wall, respectively be provided with enamel layer, make the corrosion resistance of heat exchanger tube improve greatly, thereby can prolong the service life of air preheater greatly.Because heat exchanger tube adopts the mode of plug-in mounting to link to each other with tube sheet, make that the dismounting of heat exchanger tube is very easy again, thus easy to maintenance.
In sum, the advantage of the utility model is: long service life, and easy to maintenance.
Description of drawings
Below in conjunction with accompanying drawing the specific embodiment of the utility model is done further to specify:
Fig. 1 is the structural representation of the utility model.
The specific embodiment
As shown in Figure 1, the enamel pipe plate air preheater comprises many heat exchanger tubes 1, and the two ends of each heat exchanger tube 1 are connected on two tube sheets 2, respectively are provided with enamel layer 3 on the inside and outside surface of each heat exchanger tube 1 tube wall.The concrete connected mode of heat exchanger tube 1 and two tube sheets 2 is described below.Be equipped with the heat exchanger tube plug-in opening 4 that quantity equates with the quantity of heat exchanger tube 1 on two tube sheets 2; The soft packing ring 5 of graphite of an end is inserted in the heat exchanger tube plug-in opening 4 on the tube sheet 2 many heat exchanger tubes successively through being sleeved on separately, and the soft packing ring 5 of graphite of the other end is inserted in the heat exchanger tube plug-in opening 4 on another tube sheet 2 many heat exchanger tubes successively through being sleeved on separately.
Claims (2)
1. an enamel pipe plate air preheater comprises many heat exchanger tubes (1), and the two ends of each heat exchanger tube (1) are connected on two tube sheets (2), it is characterized in that: respectively be provided with enamel layer (3) on the inside and outside surface of each heat exchanger tube (1) tube wall.
2. enamel pipe plate air preheater according to claim 1; It is characterized in that: be equipped with the heat exchanger tube plug-in opening (4) that quantity equates with the quantity of heat exchanger tube (1) on two tube sheets (2); The soft packing ring of graphite (5) of an end is inserted in the heat exchanger tube plug-in opening (4) on the tube sheet (2) many heat exchanger tubes successively through being sleeved on separately, and the soft packing ring of graphite (5) of the other end is inserted in the heat exchanger tube plug-in opening (4) on another tube sheet (2) many heat exchanger tubes successively through being sleeved on separately.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200512415U CN202470103U (en) | 2012-02-17 | 2012-02-17 | Enamel tube sheet type air preheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200512415U CN202470103U (en) | 2012-02-17 | 2012-02-17 | Enamel tube sheet type air preheater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202470103U true CN202470103U (en) | 2012-10-03 |
Family
ID=46918258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200512415U Expired - Fee Related CN202470103U (en) | 2012-02-17 | 2012-02-17 | Enamel tube sheet type air preheater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202470103U (en) |
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2012
- 2012-02-17 CN CN2012200512415U patent/CN202470103U/en not_active Expired - Fee Related
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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: 20121003 Termination date: 20160217 |