CN201028779Y - Combined air preheater - Google Patents
Combined air preheater Download PDFInfo
- Publication number
- CN201028779Y CN201028779Y CNU2007200351840U CN200720035184U CN201028779Y CN 201028779 Y CN201028779 Y CN 201028779Y CN U2007200351840 U CNU2007200351840 U CN U2007200351840U CN 200720035184 U CN200720035184 U CN 200720035184U CN 201028779 Y CN201028779 Y CN 201028779Y
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- China
- Prior art keywords
- heat exchanger
- heat
- heat interchanger
- pipe
- utility
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model relates to a combined air preheater which aims at conquering the shortages of small heat exchanging modulus, no strengthening heat exchanging in the prior heat interchanger pipes. The utility model comprises a fume channel 1 and an air channel 2. The utility model is characterized in that: the high temperature fume channel 1 and the cold air channel 2 are formed by the combined connection of a high temperature district heat interchanger 3, a middle temperature district heat interchanger 4 and a low temperature district heat interchanger 5; wherein, the high temperature district heat interchanger 3 is a screw groove pipe bramble stream troubling heat interchanger, the middle temperature district heat interchanger 4 is a hot pipe heat interchanger and the low temperature district heat interchanger 5 is a vitreous enamel screw groove pipe heat interchange and the pipe insides of the screw groove pipe bramble stream troubling heat interchanger and the vitreous enamel screw groove pipe heat interchange are provided with brambles so as to strengthen the heat exchanging. The utility model realizes the running with long period, and conquers the limitations of bare points cankering and high temperature easily being damaged of the prior heat interchangers, and simultaneously also greatly reduces the smoke discharging temperature by adopting the new technique and taking the advantages of other machines.
Description
Technical field
The utility model belongs to industrial equipment and establishes the art field, specifically a kind of combination type air preheater that is applied to the industrial heating furnace of oil refinery, metallurgy, chemical industry, power industry.
Background technology
At present, no matter home or overseas all utilizes industrial furnace discharged flue gas waste heat heating combustion air and gaseous fuel, improve theoretical temperature combustion, quickening programming rate, the fuel saving significantly of fuel with this.Usually using many heat exchangers has rotary type heat exchanger, tubular heat exchanger, heat-pipe heat exchanger etc., but they all have certain defective.The air leakage coefficient of rotary type heat exchanger is big, also damages easily simultaneously.The intraductal heat exchange coefficient of tubular heat exchanger is less, but has shortcomings such as easy dew point corrosion.The cold and hot side of heat-pipe heat exchanger all can be conducted heat by force, the coefficient of heat transfer is also bigger, but damages easily during its high temperature.Because traditional heat exchanger all has various defectives when doing, often service life shorter, can not realize long-term operation.
Summary of the invention
But the purpose of this utility model then is the weak point that exists at above-mentioned prior art and a kind of long-term operation, long service life, combination type air preheater that heat exchange efficiency is high are provided.
The purpose of this utility model can realize by following measure:
A kind of combination type air preheater, comprise exhaust gases passes 1 and air duct 2, it is characterized in that exhaust gases passes 1 and air duct 2 are connected by high-temperature region heat exchanger 3, middle warm area heat exchanger 4 and low-temperature space heat exchanger 5 forms, wherein high-temperature region heat exchanger 3 is a helicla flute tubular type brambles flow-disturbing heat exchanger, middle warm area heat exchanger 4 is a heat-pipe heat exchanger, and low-temperature space heat exchanger 5 is an enamel helicla flute tubular type heat exchanger.
The purpose of this utility model can also realize by following measure:
Be provided with brambles in the pipe of described helicla flute tubular type brambles flow-disturbing heat exchanger.
Be provided with brambles in the pipe of described enamel helicla flute tubular type heat exchanger.
Connect by middle nipple 6 between described high-temperature region heat exchanger 3, middle warm area heat exchanger 4 and the low-temperature space heat exchanger 5.
The utility model has been realized the long-term operation of heat exchanger, overcome the problem that the intraductal heat exchange coefficient is little, enhanced heat exchange is not enough of present various heat exchangers, and dew point corrosion and the flimsy defective of high temperature have been solved, also greatly reduce simultaneously exhaust gas temperature, can reduce by 50～80 ℃ than originally, it is about 0.5～1.5% to improve the thermal efficiency of stove, generally comes into operation and can recoup capital outlay in 3～6 months, and economic benefit is obvious.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is further described:
As shown in Figure 1, the utility model partly is made up of high-temperature region heat exchanger 3, middle warm area heat exchanger 4 and low-temperature space heat exchanger 5 three, by they connect to form exhaust gases passes 1 and air duct 2, be used for the discharge of flue gas and entering of air.Above-mentioned high-temperature region heat exchanger 3 adopts helicla flute tubular type brambles flow-disturbing heat exchanger, is provided with brambles in its pipe, to strengthen the heat exchange of air, can improve heat exchange efficiency 40～70%.Warm area heat exchanger 4 can adopt heat-pipe heat exchanger in described, and cold and hot like this side all can be conducted heat by force, and the coefficient of heat transfer is big.Described low-temperature space heat exchanger 5 has adopted enamel helicla flute tubular type heat exchanger, has equally also installed brambles in pipe additional, to strengthen air heat exchange effect, and also than can improving heat exchange efficiency 40～70% originally, and the problems such as low-temperature dew point corrosion before having overcome.High-temperature region heat exchanger 3, middle warm area heat exchanger 4 and low-temperature space heat exchanger 5 three partly are connected by middle nipple 6 each other.
The course of work of the present utility model is:
High-temperature flue gas → gas approach 7 → high-temperature region heat exchanger 3 → middle warm area heat exchanger 4 → low-temperature space heat exchanger 5 → flue gas discharge opening 9 to chimney is discharged.
Cold air → air intlet 8 → low-temperature space heat exchanger 5 → middle warm area heat exchanger 4 → high-temperature region heat exchanger 3 → combustion-supporting from hot air outlet 10 to heating furnace.
Claims (4)
1. combination type air preheater, comprise exhaust gases passes (1) and air duct (2), it is characterized in that exhaust gases passes (1) and air duct (2) are connected by high-temperature region heat exchanger (3), middle warm area heat exchanger (4) and low-temperature space heat exchanger (5) forms, wherein high-temperature region heat exchanger (3) is a helicla flute tubular type brambles flow-disturbing heat exchanger, middle warm area heat exchanger (4) is a heat-pipe heat exchanger, and low-temperature space heat exchanger (5) is an enamel helicla flute tubular type heat exchanger.
2. combination type air preheater according to claim 1 is characterized in that being provided with brambles in the pipe of described helicla flute tubular type brambles flow-disturbing heat exchanger.
3. combination type air preheater according to claim 1 is characterized in that being provided with brambles in the pipe of described enamel helicla flute tubular type heat exchanger.
4. combination type air preheater according to claim 1 is characterized in that connecting by middle nipple (6) between described high-temperature region heat exchanger (3), middle warm area heat exchanger (4) and the low-temperature space heat exchanger (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200351840U CN201028779Y (en) | 2007-03-21 | 2007-03-21 | Combined air preheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200351840U CN201028779Y (en) | 2007-03-21 | 2007-03-21 | Combined air preheater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201028779Y true CN201028779Y (en) | 2008-02-27 |
Family
ID=39132992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200351840U Expired - Lifetime CN201028779Y (en) | 2007-03-21 | 2007-03-21 | Combined air preheater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201028779Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107990545A (en) * | 2018-01-16 | 2018-05-04 | 广西节得乐生物质能源科技有限公司 | A kind of biomass thermal wind furnace heat-exchanger rig |
-
2007
- 2007-03-21 CN CNU2007200351840U patent/CN201028779Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107990545A (en) * | 2018-01-16 | 2018-05-04 | 广西节得乐生物质能源科技有限公司 | A kind of biomass thermal wind furnace heat-exchanger rig |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Tianjin Chenchuang Environment Engineering Science & Technology Co., Ltd. Assignor: Nanjing Zhonghao Heat Pipe And Petrochemical Equipment Manufacturing Co., Ltd. Contract fulfillment period: 2009.3.30 to 2014.3.30 Contract record no.: 2009120000073 Denomination of utility model: Turbolator and cast iron plate combined type air pre-heater Granted publication date: 20080227 License type: Exclusive license Record date: 20090630 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.3.30 TO 2014.3.30; CHANGE OF CONTRACT Name of requester: TIANJIN CHENCHUANG ENVIRONMENT ENGINEERING SCIENCE Effective date: 20090630 |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080227 |