CN201555472U - Enamel screwed pipe type air heat exchanger - Google Patents
Enamel screwed pipe type air heat exchanger Download PDFInfo
- Publication number
- CN201555472U CN201555472U CN200920240329XU CN200920240329U CN201555472U CN 201555472 U CN201555472 U CN 201555472U CN 200920240329X U CN200920240329X U CN 200920240329XU CN 200920240329 U CN200920240329 U CN 200920240329U CN 201555472 U CN201555472 U CN 201555472U
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- Prior art keywords
- heat exchanger
- enamel
- tube
- air heat
- type air
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Abstract
The utility model discloses an enamel screwed pipe type air heat exchanger, which includes two tube plate arranged oppositely; a plurality of heat exchange tubes are arranged between the two tube plates and include screwed pipes; and the inner surfaces of the screwed pipes are enameled with an enamel layer which has the advantages of corrosion resistance, wear resistance, smoke scouring resistance and high smoothness, so that the air heat exchanger efficiently avoids low temperature corrosion, ash fouling and abrasion problems, and has the service life 1.5-2 times longer than a plain tube.
Description
Technical field
The utility model relates to a kind of air heat exchanger, relates to a kind of enamel screw tube type air heat exchanger of corrosion-resistant, good effect of heat exchange specifically, belongs to technical field of heat exchangers.
Technical background
Normal optical tubular type air heat exchanger simple structure, manufacturing, easy for installation, low price, it is also reliable to work, and has a wide range of applications at industrial departments such as China's power, oil, metallurgy, chemical industry.But normal optical tubular type air heat exchanger heat exchange effect is not remarkable, add the growing tension of China's coal resource, the steam coal medium is variation day by day, the sulfur-bearing coal is also more and more, during the sulfur-bearing coal combustion, the sulfur dioxide that produces is oxidized to sulfur trioxide by remaining oxygen in the flue gas, water vapour in sulfur trioxide and the flue gas is combined to sulfuric acid vapor, when the heating surface temperature is lower than acid dew-point temperature, sulfuric acid vapor is just formed liquid in the tube surface cooling, form sulfuric acid solution, light pipe is had strong corrosiveness.Based on the problems referred to above, the air heat exchanger of researching and developing a kind of novel good effect of heat exchange, acid-alkali-corrosive-resisting is most important.
The utility model content
Problem to be solved in the utility model is in order to solve the defective that normal optical tubular type air heat exchanger exists, a kind of a kind of enamel screw tube type air heat exchanger corrosion-resistant, wear-resistant, good effect of heat exchange that changes to be provided.
For addressing the above problem, the utility model by the following technical solutions:
A kind of enamel screw tube type air heat exchanger comprises two tube sheets that are oppositely arranged, and is provided with some heat exchanger tubes between two tube sheets, and it is characterized in that: described heat exchanger tube comprises screwed pipe, and coating has enamel layer on the inner surface of screwed pipe.
Owing to be coated with corrosion-resistant, wear-resistant, the anti-sweep of gases of last layer, enamel that smoothness is high at the screwed pipe inner surface, this air heat exchanger has effectively been avoided cold end corrosion, stifled ash and wear problem, and service life is than 1.5～2 times of optical tube lengths.
Below be the utility model for further improvement of these options:
Thread segment on the described screwed pipe is the outer concavity of convex.
Further improve:
Described some heat exchanger tubes are staggered between two tube sheets, and air is walked outside the pipe, and flue gas is from top to bottom in the flush pipe.
Further improve: the two ends of described heat exchanger tube and tube sheet be welded seal respectively.
The utility model adopts such scheme, has the following advantages:
1, the heat-transfer effect of screwed pipe is better than light pipe, and its heat transfer coefficient improves about 50% than light pipe; Wall temperature increases about 20 ℃ than light pipe.This be because, when flue gas flows and air flows, all be subjected to the disturbance of thread groove outside screwed pipe in screwed pipe, strengthened the heat transfer of pipe medial and lateral.
2, anti-dust stratification is can force rate light pipe formula strong: when flue gas flows at the thread groove of tube wall, advance with the eddy flow state, increased the flue gas propulsive force that rotatablely moves, the flying dust of carrying under one's arms in the flue gas is difficult for depositing, add the enamel smooth surface in addition, flying dust just more is difficult for adhering to, and has improved the heat exchange effect.
The utility model is described in further detail below in conjunction with drawings and Examples:
Description of drawings
Accompanying drawing 1 is the structural representation of the utility model embodiment;
Accompanying drawing 2 is the schematic cross-section of heat exchanger tube among the utility model embodiment.
The specific embodiment
Embodiment, as shown in Figure 1, a kind of enamel screw tube type air heat exchanger, comprise that two tube sheets 1 that are oppositely arranged are provided with some heat exchanger tubes 21 of two tube sheet, described heat exchanger tube comprises screwed pipe, as shown in Figure 2, coating has enamel layer 4 on the inner surface of screwed pipe 3, its preparation method is that the employing glass enamel is a matrix, mix high temperature resistant, corrosion-resistant, wear-resistant new material, be made into enamel by certain scientific formula, be evenly coated in the inner surface of screwed pipe, at high temperature sintering forms then.The heat-transfer effect of screwed pipe is better than light pipe, and its heat transfer coefficient improves about 50% than light pipe; Wall temperature increases about 20 ℃ than light pipe, and this heat exchanger adopts vertical stagger arrangement to arrange that air is walked outside the pipe, and flue gas is from top to bottom in the flush pipe.Adopt welded seal between tube sheet 1 and the heat exchanger tube 2, thread segment on the described screwed pipe is the outer concavity of convex, when flue gas flows at the thread groove of tube wall, advance with the eddy flow state, increased the flue gas propulsive force that rotatablely moves, the flying dust of carrying under one's arms in the flue gas is difficult for depositing, add the enamel smooth surface in addition, flying dust just more is difficult for adhering to, and has improved the heat exchange effect, because the screwed pipe heat-transfer capability is strong, can adopt pipe manufacturing than major diameter such as Φ 50mm or Φ 60mm, be implemented under the constant situation of heat exchange amount, can make the weight and volume of boiler heat-exchanger reduce 1/2～3/5, thereby save steel.
Claims (4)
1. enamel screw tube type air heat exchanger, comprise two tube sheets (1) that are oppositely arranged, be provided with some heat exchanger tubes (2) between two tube sheets (1), it is characterized in that: described heat exchanger tube (2) comprises screwed pipe (3), and coating has enamel layer (4) on the inner surface of screwed pipe (3).
2. a kind of enamel screw tube type air heat exchanger according to claim 1 is characterized in that: the thread segment on the described screwed pipe (3) is the outer concavity of convex.
3. a kind of enamel screw tube type air heat exchanger according to claim 1 and 2, it is characterized in that: described some heat exchanger tubes (2) are staggered between two tube sheets (1).
4. a kind of enamel screw tube type air heat exchanger according to claim 3 is characterized in that: the two ends of described heat exchanger tube (2) and tube sheet (1) be welded seal respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920240329XU CN201555472U (en) | 2009-10-26 | 2009-10-26 | Enamel screwed pipe type air heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920240329XU CN201555472U (en) | 2009-10-26 | 2009-10-26 | Enamel screwed pipe type air heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201555472U true CN201555472U (en) | 2010-08-18 |
Family
ID=42615157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920240329XU Expired - Lifetime CN201555472U (en) | 2009-10-26 | 2009-10-26 | Enamel screwed pipe type air heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201555472U (en) |
Cited By (1)
| 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 |
-
2009
- 2009-10-26 CN CN200920240329XU patent/CN201555472U/en not_active Expired - Lifetime
Cited By (1)
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANDONG HENGTAO ENERGY SAVING + ENVIRONMENTAL PRO Free format text: FORMER OWNER: FANG XITAO Effective date: 20111202 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20111202 Address after: 261500, Gaomi City, Shandong province Heng Tao energy-saving environmental protection Co., Ltd. Heng Tao Industrial Park Patentee after: Shandong Hengtao Energy-Saving Environment Protection Co., Ltd. Address before: 261500 No. 3699, north of Yi An Avenue, Xia Zhuang Industrial Park, Shandong, Gaomi City Patentee before: Fang Xitao |
|
| CX01 | Expiry of patent term |
Granted publication date: 20100818 |
|
| CX01 | Expiry of patent term |