CN206361707U - Boiler and for flue gas and the device of air heat exchange - Google Patents
Boiler and for flue gas and the device of air heat exchange Download PDFInfo
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- CN206361707U CN206361707U CN201720015191.8U CN201720015191U CN206361707U CN 206361707 U CN206361707 U CN 206361707U CN 201720015191 U CN201720015191 U CN 201720015191U CN 206361707 U CN206361707 U CN 206361707U
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- heat exchanger
- flue gas
- air
- exchanger tube
- efferent duct
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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 is disclosed in flue gas and the device of air heat exchange, flue gas heat exchanger and air heat exchanger to include input pipe, efferent duct and heat exchanger tube, and input pipe and efferent duct are separately positioned on the two ends of heat exchanger tube, and are connected with heat exchanger tube；The efferent duct of flue gas heat exchanger is connected with the input pipe of the input pipe of air heat exchanger and flue gas heat exchanger with the efferent duct of air heat exchanger by connecting pipe, to form recuperated cycle pipeline；Recuperated cycle pipeline is used to accommodate heat transferring medium, and circulating pump is arranged on recuperated cycle pipeline to drive heat transferring medium to carry out recuperated cycle flowing；Heat exchanger tube is provided with heat exchange fin.The program can solve the problem of current air preheater has relatively low cigarette air channel centralized arrangement, complicated, oversized, heat exchange efficiency, complicated manufacture and higher material cost.A kind of boiler is also disclosed in the application.
Description
Technical field
The utility model is related to boiler design technical field, more particularly to a kind of boiler and for flue gas and air heat exchange
Device.
Background technology
Boiler is more conventional firing equipment, is widely used in the fields such as hot drinking water supply, heating, thermal power generation,
Boiler can expend substantial amounts of fuel during work, and this causes the energy consumption of boiler larger, how ensure boiler compared with low energy
Worked in the state of consumption, be the important thinking direction of boiler developer.
In order to reduce the energy consumption of boiler and improve the heat utilization efficiency of fuel combustion, current boiler is usually provided with waste heat profit
With equipment, one important embodiment of waste heat utilization equipment is that the heat in the low-temperature flue gas to boiler is implemented to recycle, and real
The part of existing this purpose is air preheater.One kind that air preheater is provided in boiler tail is direct by low-temperature flue gas
The common apparatus for the cold air that heating will enter in boiler furnace, air preheater generally has direct heat-exchanging type (such as tubular type
Air preheater, plate air preheater), indirect heat exchange type (such as Rotary air preheater)；Direct heat-exchanging type air is pre-
Hot device by taking the tubular air preheater shown in Fig. 1 as an example, need to by cigarette air channel centralized arrangement, while be connected on air preheater,
Walked in pipe and walk air outside flue gas, pipe, the heat exchange of flue gas and air is realized by tube wall, the heat exchange if necessary to larger area is then needed
Arrange multi-staged air preheater, and then need increase turning cigarette air channel, because cigarette wind direct heat transfer coefficient is small, heating surface typically compared with
Heat exchange structure, physical dimension are huge using strengthening for hardly possible, and manufacture material takes higher, and pipe row amount is very more, and flue gas resistance is higher.Between
Heat exchange regenerative air heater is connect by taking Rotary air preheater as an example, Rotary air preheater be one group of heat accumulation plate in flue and
Rotated between air channel, heat accumulation plate absorbs in flue side rotates to air duct side completion indirect heat exchange process, cigarette after flue gas heat
Air channel also needs centralized arrangement, and Rotary air preheater rotary system is complex, and heat exchange material entrainment flue gas can be made to air
Into pollution, it is most important that, there is the problem of cigarette that leaks out is serious in Rotary air preheater, cause heat exchange efficiency relatively low.Very
Obviously, either all there is cigarette air channel centralized arrangement, structure in direct heat transfer regenerative air heater or indirect regenerative air heater
Complicated, oversized, heat exchange efficiency is relatively low, manufacture is complicated and the problem of higher material cost.
Utility model content
The technical problems to be solved in the utility model be air preheater on current boiler exist cigarette air channel centralized arrangement,
Complicated, oversized, heat exchange efficiency is relatively low, manufacture is complicated and the problem of higher material cost.
In order to solve the above-mentioned technical problem, the technical scheme of the utility model offer is：
It is a kind of to be used for flue gas and the device of air heat exchange, applied to boiler, including flue gas heat exchanger, air heat exchange
Device, circulating pump and connecting pipe；Wherein：
The flue gas heat exchanger is used to be arranged in the exhaust gases passes of the boiler, and the air heat exchanger is used to set
Put in the air duct of the boiler；
The flue gas heat exchanger and the air heat exchanger include input pipe, efferent duct and heat exchanger tube, described defeated
Enter pipe and the efferent duct is separately positioned on the two ends of the heat exchanger tube, and connected with the heat exchanger tube；
The efferent duct of the flue gas heat exchanger and the input pipe of the air heat exchanger and the cigarette
The input pipe of gas-heat exchanger is connected with the efferent duct of the air heat exchanger by the connecting pipe, with
Form the recuperated cycle pipeline；
The recuperated cycle pipeline is used to accommodate heat transferring medium, the circulating pump be arranged on the recuperated cycle pipeline with
The heat transferring medium is driven to carry out recuperated cycle flowing；The heat exchanger tube is provided with heat exchange fin.
Further, in addition to controller, the controller is connected with the circulating pump, for controlling the circulating pump
Power.
Further, the efferent duct of the flue gas heat exchanger and the input pipe of the flue gas heat exchanger are described
It is sequentially distributed on the flue gas circulating direction of exhaust gases passes.
Further, the heat exchange fin is by welding or being fixed by socket on the heat exchanger tube, and two heat transmission equipments are used
The heat exchanger tube of different tube diameters, the heat exchanger tube of the flue gas heat exchanger and the heat exchanger tube of the air heat exchanger
Caliber is unequal.
Further, the heat exchanger tube includes many branch pipes, the every branch pipe with the corresponding input pipe and
Efferent duct connection, the branch pipe includes multiple pipeline sections for being sequentially connected to constitute curved tube.
Further, it is mixed with antifreezing agent in the heat transferring medium.
Further, the wall thickness of the heat exchanger tube of the flue gas heat exchanger is more than the described of the air heat exchanger
The wall thickness of heat exchanger tube.
Further, the heat exchanger tube of the flue gas heat exchanger is made up of resistant material.
A kind of boiler, it is characterised in that including being used for flue gas and the device of air heat exchange described in as above any one.
The beneficial effects of the utility model are：
The device for being used for flue gas and air heat exchange that the utility model is provided is in the composition of work, flue gas heat exchanger
It is arranged in exhaust gases passes and flue gas heat exchange, air heat exchanger is arranged in air duct and air heat-exchange, flue gas heat exchange
On device, air heat exchanger and connecting pipe formation recuperated cycle pipeline, in the presence of circulating pump, heat transferring medium is in thermal cycle
Pipeline internal circulation flow, so by heat transferring medium by the heat transfer in exhaust gases passes to air duct, so as to realize flue gas pair
The heating of air, reaches the purpose of reduction energy consumption.Heat exchange is respectively provided with the heat exchanger tube of flue gas heat exchanger and air heat exchanger
Fin can realize high efficient heat exchanging, and two heat transmission equipments can be arranged on cigarette air channel optional position, be connected with hot channel, simplify boiler smoke
Air channel structure, its is simple in construction, easily manufactured, it is possible to decrease manufacturing cost.It can be seen that, the device that the application is provided can solve current
Air preheater on boiler has that cigarette air channel centralized arrangement, complicated, oversized, heat exchange efficiency be relatively low, manufacture is complicated
And material cost it is higher the problem of.
Brief description of the drawings
Fig. 1 is the operating diagram of tubular air heat exchanger；
Fig. 2 is the offer of the utility model embodiment for flue gas and the operating diagram of the device of air heat exchange；
Fig. 3 is the structural representation for the flue gas heat exchanger that the utility model embodiment is provided.
Embodiment
The utility model discloses a kind of boiler and for flue gas and the device of air heat exchange, those skilled in the art can
To use for reference present disclosure, technological parameter realization is suitably modified.It is important to note that all similar replacements and change are to this
It is it will be apparent that they are considered as being included in the utility model, and the obvious energy of related personnel for art personnel
Content described herein is modified on the basis of the utility model content, spirit and scope are not departed from or suitably changed and group
Close, to realize and using the utility model technology.
In the utility model, unless otherwise stated, Science and Technology noun used herein has this area
The implication that technical staff is generally understood that.
In order that those skilled in the art more fully understands the technical solution of the utility model, with reference to specific implementation
The utility model is described in further detail for example.
Fig. 2 and 3 are refer to, the embodiment of the present application provides a kind of for flue gas and the device of air heat exchange, applied to pot
Stove.Disclosed device includes flue gas heat exchanger 10, air heat exchanger 20, circulating pump 30 and connecting pipe 40.
Flue gas heat exchanger 10 is used to be arranged in the exhaust gases passes 50 of boiler, and flue gas heat exchanger 10 is used to change with flue gas
Heat.Air heat exchanger 20 is used to be arranged in the air duct 60 of boiler, is used for and air heat-exchange.
Flue gas heat exchanger 10 and the structure of air heat exchanger 20 can be with similar or even identical, the Hes of flue gas heat exchanger 10
Air heat exchanger 20 includes input pipe, efferent duct and heat exchanger tube.As shown in figure 3, by taking flue gas heat exchanger 10 as an example, flue gas
Heat exchanger 10 includes input pipe a, efferent duct b and heat exchanger tube c, and input pipe a and efferent duct b are separately positioned on the two of heat exchanger tube c
End, and connected with heat exchanger tube c.
The efferent duct b of flue gas heat exchanger 10 and the input pipe of air heat exchanger 20 and flue gas heat exchanger 10
Input pipe a is connected with the efferent duct of air heat exchanger 20 by connecting pipe 40, to form the recuperated cycle pipeline.
Recuperated cycle pipeline is used to accommodate heat transferring medium, and circulating pump 30 is arranged on recuperated cycle pipeline to drive heat exchange to be situated between
Matter carries out recuperated cycle flowing；The heat exchanger tube c of flue gas heat exchanger 10 and the heat exchanger tube of air heat exchanger are provided with heat exchange
Fin d.
Disclosed in the embodiment of the present application for flue gas and the device of air heat exchange in the composition of work, flue gas heat exchange
Device 10 is arranged in exhaust gases passes 50 and flue gas heat exchange, and air heat exchanger 20 is arranged in air duct 60 and air heat-exchange,
On flue gas heat exchanger 10, air heat exchanger 20 and the formation recuperated cycle pipeline of connecting pipe 40, in the presence of circulating pump,
Heat transferring medium leads to the heat transfer in exhaust gases passes 50 to air in thermal cycle pipeline internal circulation flow, and then by heat transferring medium
Road 69, so as to realize heating of the flue gas to air, reaches the purpose of reduction energy consumption.Flue gas heat exchanger 10 and air heat exchanger
Heat exchange fin is respectively provided with 20 heat exchanger tube, high efficient heat exchanging can be realized, structure is relatively simple, and manufactures relatively simple, will not
Increase manufacturing cost.It can be seen that, there is knot in the air heat exchanger that the device that the embodiment of the present application is provided can be solved on current boiler
The problem of structure complexity, relatively low heat exchange efficiency, complicated manufacture and higher manufacturing cost.
The device for being used for flue gas and air heat exchange that the embodiment of the present application is provided can also include controller, controller with
Circulating pump 30 is connected, and the power for controlling circulating pump 30 controls the stream of heat transferring medium by controlling the power of circulating pump 30
Dynamic speed, the problem of reaching regulation heat exchange rate.
It is more highly preferred to, the efferent duct b of flue gas heat exchanger 10 is with the input pipe of flue gas heat exchanger 10 in exhaust gases passes
It is sequentially distributed on 50 flue gas circulating direction, so as to realize the countercurrent flow of heat transferring medium and flue gas flow direction, heat exchange effect can be improved
Rate.
For the ease of stringing, it is preferred that heat exchange fin d is by welding or being fixed by socket in heat exchanger tube c, efferent duct b and defeated
Realization installation on fixed mount e can be fixed on by entering pipe a and heat exchanger tube c.Specifically, heat exchanger tube c includes many branch pipes, every branch pipe
Connected with corresponding input pipe a and efferent duct b, branch pipe includes multiple pipeline sections for being sequentially connected to constitute curved tube, Jin Erneng
Improve heat exchange efficiency.
Consider that winter operation prevents medium from freezing, antifreezing agent can be mixed with heat exchange medium.Specifically, can use-
The anti-icing fluid of 10~-40 DEG C of specifications.Circulating pump 30 is selected according to the drag overall for calculating flow and thermal cycle pipeline.
There is acid corrosion characteristic in view of fume side, the heat exchanger tube c of flue gas heat exchanger 10 wall thickness is more than air heat and handed over
The wall thickness of the heat exchanger tube of parallel operation 20, and then the heat exchanger tube c of flue gas heat exchanger 10 service life can be delayed.It is more highly preferred to,
The heat exchanger tube c and heat exchange fin d of flue gas heat exchanger 10 can be made up of resistant material.
In a kind of specific embodiment, the heat exchanger tube c of flue gas heat exchanger 10 can use φ 25mm × 3mm stainless steels
Pipe, the heat exchange fin d of flue gas heat exchanger 10 can be fixed on heat exchanger tube by the way of spiral welded.Flue gas heat exchanger
10 heat exchange fin d can use S30408 stainless steels or higher level resistant material.The heat exchanger tube c of flue gas heat exchanger 10 can
To include the branch pipe of single many snakelike in-line arrangements, branch pipe can carry out multiple half-turn.
Corrosivity is not present in view of air side, the heat exchanger tube of air heat exchanger 20 can use φ 16mm × 2mm purple
Copper pipe, heat exchange fin can use aluminium flake, and aluminium flake can be fixed on heat exchanger tube by the way of spiral welded.Air heat exchange
The branch pipe that device 20 can be arranged using multigroup single single snakelike in-line, branch pipe can carry out multiple half-turn.
A kind of boiler is also disclosed in the embodiment of the present application, and disclosed boiler includes the use any one of foregoing embodiments
In flue gas and the device of air heat exchange.
Device disclosed in the embodiment of the present application uses cigarette wind side separate type heat exchanger structure, has also had more circulating pump and pipe
Road, this arrangement is conducive to simplifying cigarette air channel structure, improves heat exchange efficiency, and reduction cigarette wind collateral resistance, reduction equipment take up an area face
Product, reduction equipment investment and operation energy consumption.
Described above is only preferred embodiment of the present utility model, it is noted that for the common skill of the art
For art personnel, on the premise of the utility model principle is not departed from, some improvements and modifications can also be made, these improve and
Retouching also should be regarded as protection domain of the present utility model.
Claims (9)
1. a kind of device for flue gas and air heat exchange, applied to boiler, it is characterised in that including flue gas heat exchanger,
Air heat exchanger, circulating pump and connecting pipe；Wherein：
The flue gas heat exchanger is used to be arranged in the exhaust gases passes of the boiler, and the air heat exchanger is used to be arranged on
In the air duct of the boiler；
The flue gas heat exchanger and the air heat exchanger include input pipe, efferent duct and heat exchanger tube, the input pipe
The two ends of the heat exchanger tube are separately positioned on the efferent duct, and are connected with the heat exchanger tube；
The efferent duct of the flue gas heat exchanger and the input pipe of the air heat exchanger and flue gas heat
The input pipe of exchanger is connected with the efferent duct of the air heat exchanger by the connecting pipe, to be formed
The recuperated cycle pipeline；
The recuperated cycle pipeline is used to accommodate heat transferring medium, and the circulating pump is arranged on the recuperated cycle pipeline to drive
The heat transferring medium carries out recuperated cycle flowing；The heat exchanger tube is provided with heat exchange fin.
2. device according to claim 1, it is characterised in that also including controller, the controller and the circulating pump
It is connected, the power for controlling the circulating pump.
3. device according to claim 1 or 2, it is characterised in that the efferent duct of the flue gas heat exchanger and institute
The input pipe for stating flue gas heat exchanger is sequentially distributed on the flue gas circulating direction of the exhaust gases passes.
4. device according to claim 1, it is characterised in that the heat exchange fin is by welding or being fixed by socket described
On heat exchanger tube, the caliber of the heat exchanger tube of the flue gas heat exchanger and the heat exchanger tube of the air heat exchanger not phase
Deng.
5. device according to claim 4, it is characterised in that the heat exchanger tube includes many branch pipes, the every branch pipe
Connected with the corresponding input pipe and the efferent duct, the branch pipe includes multiple pipeline sections for being sequentially connected to constitute song
Pipe.
6. device according to claim 1, it is characterised in that be mixed with antifreezing agent in the heat transferring medium.
7. device according to claim 1, it is characterised in that the wall thickness of the heat exchanger tube of the flue gas heat exchanger is big
In the wall thickness of the heat exchanger tube of the air heat exchanger.
8. device according to claim 7, it is characterised in that the heat exchanger tube of the flue gas heat exchanger is by corrosion-resistant
Material is made.
9. a kind of boiler, it is characterised in that including being used for flue gas and air heat exchange any one of claim 1-8
Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720015191.8U CN206361707U (en) | 2017-01-06 | 2017-01-06 | Boiler and for flue gas and the device of air heat exchange |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720015191.8U CN206361707U (en) | 2017-01-06 | 2017-01-06 | Boiler and for flue gas and the device of air heat exchange |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206361707U true CN206361707U (en) | 2017-07-28 |
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ID=59378906
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720015191.8U Active CN206361707U (en) | 2017-01-06 | 2017-01-06 | Boiler and for flue gas and the device of air heat exchange |
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| Country | Link |
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| CN (1) | CN206361707U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111706850A (en) * | 2020-06-19 | 2020-09-25 | 大唐东北电力试验研究院有限公司 | Boiler safety and energy saving comprehensive utilization system |
-
2017
- 2017-01-06 CN CN201720015191.8U patent/CN206361707U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111706850A (en) * | 2020-06-19 | 2020-09-25 | 大唐东北电力试验研究院有限公司 | Boiler safety and energy saving comprehensive utilization system |
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