CN206257696U - A kind of Combined air preheater - Google Patents
A kind of Combined air preheater Download PDFInfo
- Publication number
- CN206257696U CN206257696U CN201621395271.2U CN201621395271U CN206257696U CN 206257696 U CN206257696 U CN 206257696U CN 201621395271 U CN201621395271 U CN 201621395271U CN 206257696 U CN206257696 U CN 206257696U
- Authority
- CN
- China
- Prior art keywords
- air preheater
- heat exchange
- exchange tubes
- channel
- combined air
- 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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Classifications
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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
The utility model discloses a kind of Combined air preheater, belong to heat exchanger combination technique field, including set of heat exchange tubes, the set of heat exchange tubes is by the set of heat exchange tubes that is arranged side by side into the two ends of the set of heat exchange tubes are arranged on the tube sheet being oppositely arranged, it is characterised in that, the set of heat exchange tubes includes upper module and lower module, the tube sheet top of the lower module is provided with channel-section steel and is connected with the upper module, is provided with the channel-section steel and encapsulant is filled with guide plate, the channel-section steel groove.For the different problem of air preheater difference section corrosion condition, optimize the integrated mode of air preheater, air preheater is carried out into piecemeal, using the pipe and tube sheet of seriously corroded section as a separate modular, convenient simply changed when the partial tube reaches to compare when service life needs and changes, on the one hand maintenance cost, the time needed on the other hand shortening maintenance again are reduced.
Description
Technical field
The utility model is related to heat exchanger combination technique field, and in particular to a kind of Combined air preheater.
Background technology
Air preheater is the visual plant of boiler low-temperature section flue gas waste heat recovery, recently as to the overall boiler energy
It is increasingly harsh that utilization ratio is examined, and how further to reduce one of the important topic of exhaust gas temperature as boiler research.
At present for most of boilers, air preheater as boiler smoke discharge before final stage heat transmission equipment, to determine
Exhaust gas temperature is significant, and with the increasingly variation of boiler oil, the operating condition of air preheater is also more next
It is more severe, this aggravation for also causing air preheater heat exchanger tube extent of corrosion and the shortening of service life.
Every examination parameter of boiler operatiopn can be had a strong impact on when causing to leak out due to heat exchanger tube corrosion and damage, leaks out serious
Shi Bixu carries out blowing out replacing.Flue gas, air carry out heat exchange in tube case of air preheater, and the temperature of flue gas gradually drops
It is low, and then the order of severity of aggravation air preheater heat exchanger tube corrosion significantly, with the accumulation of run time, on air preheater
The pipe in portion has no problem but the pipe of its underpart may corrode leakage, if carry out integral replacing do not only exist it is unnecessary
Waste, engineering difficulty also can improve accordingly, bring larger loss.
Utility model content
The utility model provides a kind of Combined air preheater, different for air preheater difference section corrosion condition
Problem, optimize the integrated mode of air preheater, air preheater is carried out into piecemeal, by the heat exchanger tube of seriously corroded section and
Tube sheet can compare convenient simple as a separate modular when the part heat exchanger tube reaches when service life needs and changes
Changed, on the one hand reduce maintenance cost, the time needed on the other hand shortening maintenance again.
To achieve these goals, the technical solution adopted in the utility model is as follows：
A kind of Combined air preheater, including set of heat exchange tubes, the set of heat exchange tubes by the set of heat exchange tubes that is arranged side by side into,
The two ends of the set of heat exchange tubes are arranged on the tube sheet being oppositely arranged, it is characterised in that the set of heat exchange tubes includes upper module
And lower module, the tube sheet top of the lower module is provided with channel-section steel and is connected with the upper module, is provided with the channel-section steel and led
Position plate, is filled with encapsulant in the channel-section steel groove.
Preferably, the encapsulant is asbestos packing sheet, good airproof performance.
Preferably, the guide plate is the metallic composite that metal is made with ceramic particle, and wearability is good.
Preferably, the heat exchanger tube is connected with the tube sheet by thread seal mode.
Preferably, the heat exchange pipe outer wall is provided with enamel layer.
Preferably, the enamel layer thickness is 0.34 ± 0.06mm.
The beneficial effects of the utility model show：It is effective that bottom in flue is several by this kind of modular combination mode
The heat exchanger tube for arranging easy deterioration region arranges that the life-span to air preheater is distinguished by as an integral module, improves bottom
The economy and convenience of vulnerable zone replacing heat-exchange tube, can have when the part heat exchanger tube needs and changes it is being directed to, relatively simple,
Timesaving completes, the need on the one hand avoiding air preheater integral replacing as far as possible, so that corresponding maintenance cost is reduced, it is another
The time of maintenance is greatly shortened when aspect is changed to lower module again, the overall longevity of air preheater operation is extended
Life, is cost that enterprise alleviates air preheater operation maintenance；Using enamel heat exchanger tube, be difficult to accumulate dust, it is corrosion-resistant and
Wear resistance is strong, and long service life is more than 2 times of traditional heat exchangers.
Brief description of the drawings
Fig. 1 is a kind of overall structure diagram of Combined air preheater of the utility model；
Fig. 2 is a kind of close-up schematic view of Combined air preheater of the utility model.
In figure：1- upper modules, 2- lower modules, 3- heat exchanger tubes, 31- heat exchanger tube I, 4- tube sheet, 41- tube sheet I, 5- grooves
Steel, 6- guide plates, 7- encapsulants.
Specific embodiment
For the ease of it will be appreciated by those skilled in the art that being further described to the utility model below in conjunction with the accompanying drawings.
A kind of Combined air preheater as Figure 1-Figure 2, including set of heat exchange tubes, the set of heat exchange tubes by setting side by side
The heat exchanger tube 3 put is constituted, and the two ends of the set of heat exchange tubes are arranged on the tube sheet 4 being oppositely arranged, and the set of heat exchange tubes includes upper
Portion's module 1 and lower module 2, the tube sheet I41 tops of the lower module 2 are provided with channel-section steel 5 and are connected with the upper module 1, institute
State to be provided with channel-section steel 5 and encapsulant 7 is filled with guide plate 6, the groove of the channel-section steel 5.
The encapsulant 7 is asbestos packing sheet, and good airproof performance, the guide plate 6 is that metal is made with ceramic particle
Metallic composite, wearability is good, and the heat exchanger tube 3 is connected with the tube sheet 4 by thread seal mode, the heat exchanger tube 3
Outer wall is provided with enamel layer, and the enamel layer thickness is 0.34 ± 0.06mm.
The combination of air preheater is improved, by air preheater module, by original integrated air preheater
Set of heat exchange tubes is divided into upper module 1 and lower module 2 according to cigarette temperature (or corrosion condition of heat exchanger tube), and low-temperature zone is easily corroded
Heat exchanger tube I31 it is overall arrange channel-section steel 5 as mating groove on the tube sheet I41 tops of lower module 2 as a lower module 2,
Filling asbestos packing sheet is used as encapsulant 7 in groove.Only need to arrange certain inside flue when lower module 2 needs and changes
Branch loop wheel machine structure slings upper module 1, extracts lower module 2 out replacing, puts down former upper module 1 after changing in place, utilizes
The compacting of encapsulant 7 is played sealing function by the self gravitation of upper module 1, and then completes the maintenance replacing work of air preheater
Make.
Above content is only to structure example of the present utility model and explanation, the technology of affiliated the art
Personnel are made various modifications or supplement to described specific embodiment or are substituted using similar mode, without departing from
The structure of utility model surmounts scope defined in the claims, all should belong to protection domain of the present utility model.
Claims (6)
1. a kind of Combined air preheater, including set of heat exchange tubes, the set of heat exchange tubes is by the set of heat exchange tubes that is arranged side by side into institute
The two ends for stating set of heat exchange tubes are arranged on the tube sheet that is oppositely arranged, it is characterised in that the set of heat exchange tubes include upper module and
Lower module, the tube sheet top of the lower module is provided with channel-section steel and is connected with the upper module, is provided with the channel-section steel and leads position
Encapsulant is filled with plate, the channel-section steel groove.
2. a kind of Combined air preheater according to claim 1, it is characterised in that the encapsulant is asbestos rubber
Offset plate.
3. a kind of Combined air preheater according to claim 1, it is characterised in that the guide plate is metal and pottery
The metallic composite that porcelain particle is made.
4. a kind of Combined air preheater according to claim 1, it is characterised in that the heat exchanger tube and the tube sheet
Connected by thread seal mode.
5. a kind of Combined air preheater according to claim 1, it is characterised in that the heat exchange pipe outer wall is provided with wards off
Enamel coating.
6. a kind of Combined air preheater according to claim 5, it is characterised in that the enamel layer thickness is 0.34
±0.06mm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621395271.2U CN206257696U (en) | 2016-12-19 | 2016-12-19 | A kind of Combined air preheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621395271.2U CN206257696U (en) | 2016-12-19 | 2016-12-19 | A kind of Combined air preheater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206257696U true CN206257696U (en) | 2017-06-16 |
Family
ID=59030037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621395271.2U Expired - Fee Related CN206257696U (en) | 2016-12-19 | 2016-12-19 | A kind of Combined air preheater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206257696U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107747778A (en) * | 2017-09-15 | 2018-03-02 | 西安工程大学 | Modular board tubular indirect evaporative cooling air conditioning group |
-
2016
- 2016-12-19 CN CN201621395271.2U patent/CN206257696U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107747778A (en) * | 2017-09-15 | 2018-03-02 | 西安工程大学 | Modular board tubular indirect evaporative cooling air conditioning group |
| CN107747778B (en) * | 2017-09-15 | 2019-11-12 | 西安工程大学 | Modular board tubular indirect evaporative cooling air conditioning group |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20170616 Termination date: 20181219 |