CN205174432U - Boiler air inlet preheating device with amortization function - Google Patents
Boiler air inlet preheating device with amortization function Download PDFInfo
- Publication number
- CN205174432U CN205174432U CN201520929007.1U CN201520929007U CN205174432U CN 205174432 U CN205174432 U CN 205174432U CN 201520929007 U CN201520929007 U CN 201520929007U CN 205174432 U CN205174432 U CN 205174432U
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- China
- Prior art keywords
- pipe
- heat exchanger
- preheating device
- air
- boiler
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- 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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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 230000030279 gene silencing Effects 0.000 claims description 17
- 229920002472 Starch Polymers 0.000 abstract description 5
- 230000001965 increasing effect Effects 0.000 abstract description 5
- 235000019698 starch Nutrition 0.000 abstract description 5
- 239000008107 starch Substances 0.000 abstract description 5
- 239000000498 cooling water Substances 0.000 abstract description 2
- 206010037660 Pyrexia Diseases 0.000 abstract 1
- 238000001816 cooling Methods 0.000 abstract 1
- 230000007613 environmental effect Effects 0.000 abstract 1
- 230000002349 favourable effect Effects 0.000 abstract 1
- 239000013049 sediment Substances 0.000 abstract 1
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 208000011580 syndromic disease Diseases 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000003009 desulfurizing effect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000004630 mental health Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- 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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- Air Supply (AREA)
Abstract
The utility model relates to a boiler air inlet preheating device with amortization function belongs to environmental protection and energy saving equipment. The utility model provides a boiler air inlet preheating device with amortization function is equipped with the intake stack of fan including the air intake, and the fan air -out of intake stack is established and is traded hot air duct, establishes the tube bank heat exchanger that has the fin in trading hot air duct, and the cold wind that lets in heat source medium and fan inspiration in the tube bank heat exchanger carries out the heat exchange. The utility model has the advantages of: to restrain the heat exchanger and insert and to preheat the air inlet in the overfire air fan, the heat source medium can adopt cold sediment machine cooling water or starch factory used heat water or high -temperature steam, high temperature oil, utilizes probably direct dumped heat source, sparingly preheats the cost. Being equipped with the fin in the tube bank of tube bank cooling tube, not only increasing heat transfer area, also be favorable to producing the torrent at the outside of tubes wall, strengthened heat transfer efficiency, the air inlet resistance has the increase slightly simultaneously, has reduced the noise in distinguished and admirable the moving.
Description
Technical field
The utility model relates to a kind of inlet air of boiler preheating device with silencing function, belongs to environment protection energy-saving equipment.
Background technology
Because design reasons exhaust gas temperature (load is at 90t/h) on the low side exhaust gas temperature is at about 90 DEG C, causes low-temperature corrosion of air preheater serious, not only reduce boiler efficiency, and add the maintenance workload of boiler.Low double dry desulfurizing tower of exhaust gas temperature, the normal operation of sack cleaner is unfavorable.Semi-dry desulphurization tower tower body is easily caused to corrode, sack cleaner cloth bag blockage problem.Improving exhaust gas temperature adopts raising EAT to carry out usually.
Originally fan inlet design muffler erasure effect is bad, causes noise comparatively large (in-site measurement reaches 70 decibels).Affect the physical and mental health of field personnel.
Summary of the invention
The purpose of this utility model is to provide a kind of inlet air of boiler preheating device with silencing function, the problem that boiler inlet temperature is low and air intake blower fan noise is large.
For achieving the above object, the technical solution adopted in the utility model is:
There is the inlet air of boiler preheating device of silencing function, comprise the intake stack that air inlet is provided with blower fan, heat exchanging air duct is established in the blower fan air-out of intake stack, establishes the pipe bundle heat exchanger with fin in heat exchanging air duct, and the cold wind passing into heat source medium and blower fan inspiration in pipe bundle heat exchanger carries out heat exchange.
As preferably, what described pipe bundle heat exchanger comprised superposed inlet pipe and bottom goes out pipe, inlet pipe and go out pipe for coiled pipe, inlet pipe and go out between pipe to be connected with multiple heat exchanger tube, and fin is established on heat exchanger tube surface.
As preferably, the fin pitch on described heat exchanger tube surface is 5mm, and the annular width of fin is 15mm, and the thickness of fin is 0.5mm.
As preferably, inlet pipe passes into heat source medium, and go out pipe access drain tank, the heat source medium that described inlet pipe enters is adjustable.
As preferably, described inlet pipe and the heat exchanger tube gone out between pipe are uniformly distributed, and same position place at least establishes a heat exchanger tube.
As preferably, described inlet pipe and the heat exchanger tube gone out between pipe are three at same position place.
As further preferred, described heat source medium is the one in high-temperature water, high-temperature steam or high temperature oil.
As preferably, the pipe bundle heat exchanger rear of described intake stack is provided with temperature-detecting device.
The utility model has the advantage of: pipe bundle heat exchanger is accessed in an overfire air fan and preheating is carried out to air intake, heat source medium can adopt lag cooler cooling water or starch factory spent hot water or high-temperature steam, high temperature oil, the thermal source that utilization may directly be discarded, saves preheating cost.Fin is equipped with in the tube bank of tube bank radiating tube, not only increases heat transfer area, be also conducive to, in pipe outer wall turbulization, enhancing heat transfer efficiency, air intake resistance has increased slightly simultaneously, reduces the noise in wind flow.Reach the EAT increasing boiler and the double effects reducing air intake blower fan noise.
Accompanying drawing explanation
Fig. 1 is enforcement structural representation of the present utility model,
Fig. 2 is heat exchanging air duct schematic cross-section of the present utility model,
Fig. 3 is heat exchanging air duct left view of the present utility model,
Fig. 4 is heat exchanging air duct top view of the present utility model.
Fig. 5 is heat exchanger tube Section View of the present utility model.
Reference numeral: 1, blower fan, 2, heat exchanging air duct, 3, intake stack, 4, tube bank radiator, 5, valve, 6, drain tank, 7, inlet pipe, 8, go out pipe, 9, heat exchanger tube, 10, fin.
Detailed description of the invention
Structure of the present utility model is as Fig. 1
There is the inlet air of boiler preheating device of silencing function, comprise the inlet air of boiler pipeline 3 being provided with blower fan 1, heat exchanging air duct 2 is established in the blower fan air-out of intake stack 3, establish the pipe bundle heat exchanger 4 with fin 10 in heat exchanging air duct 2, the cold wind passing into heat source medium and blower fan 1 inspiration in pipe bundle heat exchanger 4 carries out heat exchange.What pipe bundle heat exchanger 4 comprised superposed inlet pipe 7 and bottom goes out pipe 8, inlet pipe 7 and go out pipe 8 for coiled pipe, inlet pipe 7 and go out between pipe 8 to be connected with multiple heat exchanger tube 9, and circular fin 10 is established on heat exchanger tube 9 surface.Fin 10 spacing on heat exchanger tube 9 surface is 5mm, and the annular width of fin is 15mm, and the thickness of fin is 0.5mm.
Inlet pipe 7 passes into heat source medium, goes out pipe 8 and accesses drain tank 6, goes out pipe 8 place and is also provided with valve 5, the heat source medium temperature that described inlet pipe 7 enters and flow adjustable.Inlet pipe 7 and the heat exchanger tube 9 gone out between pipe 8 are uniformly distributed, and inlet pipe 7 and the heat exchanger tube 9 gone out between pipe 8 are three at same position place.
Heat source medium is the one in high-temperature water, high-temperature steam or high temperature oil.Pipe bundle heat exchanger 4 rear of intake stack 3 is provided with temperature-detecting device.
Embodiment
Two groups are had on the inlet air of boiler preheating device access inlet air of boiler pipeline of silencing function, wherein on the inlet pipe going out after pipe access one group of last group, a conduct air intake preheating of last group, rear one group as secondary air preheating.Adopt starch factory spent hot water as heat source medium.
The one group of inlet air of boiler preheating device overall heat exchange area with silencing function: 1050m
2, operating pressure: 0.8MPa, inflow temperature <120 DEG C, leaving water temperature <52 DEG C, flow: 50-90t/h material: 20# steel.
Adding the every Data Comparison table of boiler before and after the inlet air of boiler preheating device with silencing function:
After the inlet air of boiler preheating device with silencing function, the wind of blower fan inspiration is carried out preheating by the spent hot water after starch utilizes, wind-warm syndrome in intake stack raises, the air of raised temperature is passed into boiler, realize improving EAT, reach the object improving exhaust gas temperature, improve the service life of cleaner.
Meanwhile, because the atmospheric density after heating up is little, reduce blower fan suction gas power consumption, reduce the use power of blower fan, reach energy-conservation effect.
The gas that blower fan sucks flows in tube bank radiator, and because the statement restraining radiator is provided with fin, the air of flowing is in fin and heat exchanger tube surface turbulization, and enhance heat transfer efficiency, air intake resistance has increased slightly simultaneously, reduces the noise in wind flow.Reach the effect increasing and reduce air intake blower fan noise.
To sum up, after this device of use, following problem is solved:
1, solve the low problem of boiler inlet temperature, improve Combustion Operation of Boilers, reduce the consumption of coal.
2, the cold end corrosion problem of heated surface at the end of boiler is alleviated.Because exhaust gas temperature is lower before transformation, the stifled ash of preheater tubes corrosion is serious, and boiler operatiopn cycle time, maintenance workload is large.After using the utility model, boiler fan import wind-warm syndrome and exhaust gas temperature improve, and significantly reduce cold end corrosion degree, improve the working environment of semi-dry desulphurization and sack cleaner.Be beneficial to its long-term operation.
3, the raising of boiler fan air intake wind-warm syndrome, reduces the energy consumption of first and second blower fan.
4, Starch Production or other discarded thermals source be recycled utilization, reach energy-saving and cost-reducing object.
5, blower fan ambient noise obviously reduces, and improves the environment of workman's field operation.
Claims (8)
1. one kind has the inlet air of boiler preheating device of silencing function, comprise the inlet air of boiler pipeline (3) being provided with blower fan (1), it is characterized in that, heat exchanging air duct (2) is established in the blower fan air-out of intake stack (3), establish the pipe bundle heat exchanger (4) with fin (10) in heat exchanging air duct (2), the cold wind passing into heat source medium and blower fan (1) inspiration in pipe bundle heat exchanger (4) carries out heat exchange.
2. the inlet air of boiler preheating device with silencing function according to claim 1, it is characterized in that, what described pipe bundle heat exchanger (4) comprised superposed inlet pipe (7) and bottom goes out pipe (8), inlet pipe (7) and go out pipe (8) be coiled pipe, inlet pipe (7) and go out pipe (8) between be connected with multiple heat exchanger tube (9), circular fin (10) is established on heat exchanger tube (9) surface.
3. the inlet air of boiler preheating device with silencing function according to claim 2, is characterized in that, fin (10) spacing on described heat exchanger tube (9) surface is 5mm, and the annular width of fin is 15mm, and the thickness of fin is 0.5mm.
4. the inlet air of boiler preheating device with silencing function according to claim 2, it is characterized in that, described, inlet pipe (7) passes into heat source medium, go out pipe (8) access drain tank (6), go out pipe (8) place be also provided with valve (5), the temperature of the heat source medium that described inlet pipe (7) enters and flow adjustable.
5. the inlet air of boiler preheating device with silencing function according to claim 3, is characterized in that, described inlet pipe (7) and the heat exchanger tube (9) gone out between pipe (8) are uniformly distributed, and same position place at least establishes a heat exchanger tube (9).
6. the inlet air of boiler preheating device with silencing function according to claim 5, is characterized in that, described inlet pipe (7) and the heat exchanger tube (9) gone out between pipe (8) are three at same position place.
7., according to the described inlet air of boiler preheating device with silencing function arbitrary in claim 1-6, it is characterized in that, described heat source medium is the one in high-temperature water, high-temperature steam or high temperature oil.
8. the inlet air of boiler preheating device with silencing function according to claim 7, is characterized in that, pipe bundle heat exchanger (4) rear of described intake stack (3) is provided with temperature-detecting device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520929007.1U CN205174432U (en) | 2015-11-20 | 2015-11-20 | Boiler air inlet preheating device with amortization function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520929007.1U CN205174432U (en) | 2015-11-20 | 2015-11-20 | Boiler air inlet preheating device with amortization function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205174432U true CN205174432U (en) | 2016-04-20 |
Family
ID=55738421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520929007.1U Expired - Fee Related CN205174432U (en) | 2015-11-20 | 2015-11-20 | Boiler air inlet preheating device with amortization function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205174432U (en) |
Cited By (2)
| 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 |
| CN110671572A (en) * | 2019-09-11 | 2020-01-10 | 华电重工股份有限公司 | Noise reduction structure and waste heat boiler |
-
2015
- 2015-11-20 CN CN201520929007.1U patent/CN205174432U/en not_active Expired - Fee Related
Cited By (2)
| 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 |
| CN110671572A (en) * | 2019-09-11 | 2020-01-10 | 华电重工股份有限公司 | Noise reduction structure and waste heat boiler |
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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: 20160420 Termination date: 20181120 |