CN203731469U - Plate air preheater and flue gas heat energy recovery system comprising same - Google Patents
Plate air preheater and flue gas heat energy recovery system comprising same Download PDFInfo
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- CN203731469U CN203731469U CN201420118080.6U CN201420118080U CN203731469U CN 203731469 U CN203731469 U CN 203731469U CN 201420118080 U CN201420118080 U CN 201420118080U CN 203731469 U CN203731469 U CN 203731469U
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- plate
- air
- air preheater
- flue gas
- shell
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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 discloses a plate air preheater and a flue gas heat energy recovery system comprising the same. The plate air preheater comprises a shell and a heat exchange device located in the shell; a flue gas inlet is formed in the top part of the shell; a flue gas outlet is formed in the bottom part of the shell; an air inlet is formed in the lower part of one of side faces of the shell; an air outlet is formed in the upper part of the other side face of the shell; the heat exchange device consists of a plurality of sheets arranged side by side. The plate air preheater is characterized in that each sheet comprises a sheet body; first welding parts are respectively formed at both ends in the width direction of each sheet body; second welding parts are respectively formed at both ends of the length direction of each sheet body; the first welding parts of one of the sheet bodies and the first welding parts of the adjacent sheet body are hermetically welded and connected to form a flue gas passage; the second welding parts of one of the sheet bodies and the second welding parts of the adjacent sheet body are welded and connected to form an air passage. The plate air preheater disclosed by the utility model has the characteristics that the air preheating uniformity is good, a heat dissipation effect is good, and the cost is low.
Description
Technical field
The utility model relates to technical field of heat exchange, relates in particular a kind of plate air preheater and has the smoke heat energy recovery system of this preheater.
Background technology
Air preheater refers to and will enter air preheat before the boiler equipment to uniform temperature, it utilizes the heat of flue gas in inner fin absorption boiler back-end ductwork, conduct in cleaned air again, and then can improve the heat exchange performance of whole boiler, fall low-energy-consumption.
Chinese invention patent publication number CN103134067A discloses a kind of flat-plate air air preheater, comprise the heat exchange device in shell and shell, the top that the bottom that the top of described shell is provided with gas approach, shell is provided with air exit, a side of shell is provided with air outlet slit, shell is provided with air intlet below another side; Described heat exchange device comprises two groups of heat-transfer pipes, and every group of heat-transfer pipe has identical a plurality of, and each heat-transfer pipe superposes mutually, each heat-transfer pipe axially identical; The upper shed of one group of heat-transfer pipe is connected with gas approach, and the under shed of another group heat-transfer pipe is connected with exhanst gas outlet, two groups of upper and lower arrangements of heat-transfer pipe, and the under shed that is positioned at the heat-transfer pipe of top is connected with the upper shed that is positioned at the heat transmitter of below; Each heat-transfer pipe comprises flow-interfering bar and two identical plate bodys, and the shape in the vertical direction cross section of plate body is " door " font, and the openend of two plate bodys connects and forms pipeline formation pipeline; Described flow-interfering bar has many, and they are connected to inner surface and the outer surface of plate body; The length direction of flow-interfering bar and the length direction of pipeline of inner surface that is connected to plate body is consistent, and flow-interfering bar is linear pattern; The length direction of flow-interfering bar and the length direction of pipeline of outer surface that is connected to plate body is vertical, and this flow-interfering bar is " S " type.
But above-mentioned plate body is only used for forming flue gas flow channel, for air flow channel, cannot play the function of restriction simultaneously, air flow channel is to be limited by shell completely, so at least has following defect:
One, it cannot be realized the air in air flow channel is carried out to homogeneous heating, such as the air themperature near plate part can be higher, lower near the air themperature of housing parts;
Two, the shape that is outer shell completely to the multipaths design of air flow channel retrains, and its production and processing for shell requires too high, causes production cost height and the large shortcoming of processing and manufacturing difficulty.
In view of this, the inventor is for above-mentioned defect of the prior art, and further investigation has this case to produce then.
Utility model content
The first object of the present utility model is to provide a kind of plate air preheater, to solve, has the shortcoming that air preheat is inhomogeneous, production cost is high and processing and manufacturing difficulty is large in prior art.
In order to reach above-mentioned purpose, solution of the present utility model is:
A kind of plate air preheater, comprise shell and the heat exchange device that is positioned at shell, the top of described shell is provided with gas approach, the bottom of shell is provided with exhanst gas outlet, the bottom of a side of shell is provided with air intake, the top of another side of shell is provided with air outlet slit, and the plate that this heat exchange device is arranged side by side by polylith forms; Wherein, each plate includes plate body, this plate body is all formed with the first weld part at width two ends, this plate body in the longitudinal direction two ends is all formed with the second weld part, this plate body first weld part is connected to construct flue gas flow channel with the first weld part seal welding of the plate of an adjacent side, and the second weld part of the plate of this plate body the second weld part and adjacent opposite side is weldingly connected to construct air flow channel.
Further, on this plate body, also give prominence to and be formed with how group first is given prominence to ripples and organized the second outstanding ripples more, every group first outstanding ripple all has along spaced many of plate body width, every group second outstanding ripple has along spaced many of plate body width, and each first outstanding ripple is all cross-shaped with the arbitrary second outstanding ripple.
Further, in same flow channel space, between the outstanding ripple of adjacent set first, be provided with one group of second outstanding ripple, between the outstanding ripple of adjacent set second, be provided with one group of first outstanding ripple.
Further, on this plate body, be also formed with at least one seal bead, each seal bead is extended along the width of plate body, and the seal bead rigidity in adjacent plate is supported together and formed at least two flow processs to separate out air flow channel.
Further, this at least one seal bead all has a planar base, in adjacent plate the planar base of seal bead each other rigidity support.
Further, this plate air preheater also comprises zigzag deflection plate, and this zigzag deflection plate one end indention is also embedded in the circulation of air in a side with partition adjacent run of the outside of plate the first weld part.
Further, the sectional area of this flue gas flow channel is greater than the sectional area of air flow channel, and the spacing in this flue gas flow channel between adjacent plate is more than or equal to 20mm.
Further, this plate air preheater also comprises each test suite that is arranged on the upper and lower both sides of plate, each test suite all has the first flange, the second flange, the first plugboard and the second plugboard, this first flange and the second flange all have connecting plate, the connecting plate of this first flange and the second flange is connected with the plate sealing of polylith plate meta in both sides respectively, this first plugboard and the second plugboard all have zigzag inserted terminal, the salable side that is plugged on a plurality of plates of this zigzag inserted terminal, this first flange, the second flange, the first plugboard and the second plugboard also all have bending plate, this first flange, the second flange, the bending plate of the first plugboard and the second plugboard has equal height plane.
Another object of the present utility model is to provide a kind of smoke heat energy recovery system with this preheater, wherein, also comprise cyclone separator, plate air preheater, air-introduced machine and air blast, this cyclone separator has high-temperature flue gas entry, ash discharging hole and high-temperature flue gas outlet, the high-temperature flue gas entry of this cyclone separator is connected with boiler exhaust mouth, this high-temperature flue gas outlet is connected with the gas approach of plate air preheater, the outlet of this air blast is connected with the air intake of plate air preheater, the air outlet slit of this plate air preheater is connected with the air inlet of boiler, the exhanst gas outlet of this plate air preheater is connected with air-introduced machine.
Further, this smoke heat energy recovery system also comprises the first reducer pipe and the second reducer pipe, and this first reducer pipe is arranged on gas approach place, and this second reducer pipe is arranged on smoke outlet.
Adopt after said structure, a kind of plate air preheater that the utility model relates to, it is by molding two the first weld parts and two the second weld parts, so make to be provided with flue gas flow channel between two air flow channels, between two flue gas flow channels, be provided with air flow channel, thereby allow the air in air flow channel can contact and have fully the feature of preheating good uniformity with plate; Moreover obtain because above-mentioned plate can adopt one processing, and can realize by zigzag deflection plate is set the effect that changes air flow channel, without shell being carried out to multiprocessing, greatly reduce production cost and difficulty of processing.
Accompanying drawing explanation
Fig. 1 is the structural representation that the utility model relates to a kind of plate air preheater the first embodiment;
Fig. 2 is the structural representation that the utility model relates to heat exchange device in a kind of plate air preheater the second embodiment;
Fig. 3 is the enlarged diagram at top in Fig. 2;
Fig. 4 is the structural representation of a plate in Fig. 2;
Fig. 5 is the structural representation of the first flange in Fig. 2;
Fig. 6 is the structural representation of the first plugboard in Fig. 2;
Fig. 7 is the structural representation that the utility model relates to a kind of smoke heat energy recovery system.
In figure:
Plate air preheater 1 shell 11
Gas approach 111 exhanst gas outlets 112
Air intake 113 air outlet slits 114
Heat exchange device 12 plate bodies 121
The first weld part 122 second weld parts 123
The outstanding ripple 125 of the first outstanding ripple 124 second
Seal bead 126 zigzag deflection plates 13
Test suite 14 first flanges 141
The second flange 142 first plugboards 143
The second plugboard 144 connecting plates 145
Zigzag inserted terminal 146 bending plates 147
Flue gas flow channel 15 air flow channels 16
Cyclone separator 2 high-temperature flue gas entries 21
Ash discharging hole 22 high-temperature flue gas outlets 23
Air-introduced machine 3 air blasts 4
Boiler 5 first reducer pipes 6
The second reducer pipe 7
The specific embodiment
In order further to explain the technical solution of the utility model, below by specific embodiment, the utility model is elaborated.
As shown in Figure 1, it is a kind of plate air preheater 1 first embodiment of the utility model, this plate air preheater 1 comprises shell 11 and is positioned at the heat exchange device 12 of shell 11, the top of described shell 11 is provided with gas approach 111, the bottom of shell 11 is provided with exhanst gas outlet 112, the bottom of 11 1 sides of shell is provided with air intake 113, and the top of shell 11 another sides is provided with air outlet slit 114, and the plate that this heat exchange device 12 is arranged side by side by polylith forms.
Main improvement of the present utility model is, each plate includes plate body 121, this plate body 121 is all formed with the first weld part 122 at width two ends, this plate body 121 in the longitudinal direction two ends is all formed with the second weld part 123, these plate body 121 first weld parts 122 are connected to construct flue gas flow channel 15 with the first weld part 122 seal weldings of the plate of an adjacent side, and these plate body 121 second weld parts 123 are weldingly connected to construct air flow channel 16 with the second weld part 123 of the plate of adjacent opposite side.
Like this, the utility model is by molding two the first weld parts 122 and two the second weld parts 123, so make to be provided with flue gas flow channel 15 between two air flow channels 16, between two flue gas flow channels 15, be provided with air flow channel 16, thereby allow the air in air flow channel 16 can contact and have fully the feature of preheating good uniformity with plate; Moreover obtain because above-mentioned plate can adopt one processing, and can realize by zigzag deflection plate 13 is set the effect that changes air flow channel 16, without shell 11 being carried out to multiprocessing, greatly reduce production cost and difficulty of processing.
Preferably, in order to increase air flow channel 16 and flue gas flow channel 15 flow disturbance before, on this plate body 121, also give prominence to and be formed with how group first is given prominence to ripples 124 and organized the second outstanding ripples 125 more, every group first outstanding ripple 124 all has along spaced many of plate body 121 widths, every group second outstanding ripple 125 has along spaced many of plate body 121 widths, and each first outstanding ripple 124 is all cross-shaped with the arbitrary second outstanding ripple 125.So can be so that the gas of the spatial flow between slave plate sheet, the air and the flue gas that specifically in air flow channel 16 and flue gas flow channel 15, pass through, all can form netted changeable complexity stream, greatly strengthen the disturbance of fluid, greatly improve the heat exchange property of whole air preheater.In order further to improve heat exchange property, in same flow channel space, between the outstanding ripple 124 of adjacent set first, be provided with one group of second outstanding ripple 125, between the outstanding ripple 125 of adjacent set second, be provided with one group of first outstanding ripple 124.
As shown in Figures 2 to 4, on this plate body 121, be also formed with at least one seal bead 126, each seal bead 126 is extended along the width of plate body 121, and seal bead 126 rigidity in adjacent plate are supported together and formed at least two flow processs to separate out air flow channel 16.So, because seal bead 126 can one-shot forming in plate forming process, therefore need again to weld band iron or band steel without the same with prior art at all, it has not only greatly reduced installation procedure, and owing to having reduced welding times, on complex procedures degree, also greatly reduce; In addition, simultaneously due to without using band iron or band steel, but directly on plate body 121, adopt and mold seal bead 126 such as modes such as punching presses, so in material cost, also greatly reduce.More preferably, this at least one seal bead 126 all has a planar base, in adjacent plate the planar base of seal bead 126 each other rigidity support.
As shown in Figure 2, this plate air preheater 1 also comprises zigzag deflection plate 13, and these zigzag deflection plate 13 one end indentions are also embedded in the circulation of air in a side with partition adjacent run of the outside of plate the first weld part 122.In the second embodiment shown in Fig. 2, the middle part of plate body 121 is formed with altogether 3 seal bead 126, and these plate body 121 length direction two ends are also formed with seal bead 126, the seal bead 126 of each plate body 121 end is all weldingly connected with the seal bead 126 of an adjacent plate end.So utilize above-mentioned seal bead 126, can form 4 separate passages.In the present embodiment, also by adding 3 zigzag deflection plates 13, can, so that in the figure shown in Fig. 2, allow one air carry out 4 heating.Utilize the design of above-mentioned seal bead 126 and zigzag deflection plate 13, can choose at random the combination of a plurality of flow processs, such as a plurality of flow processs circulations being connected to improve the temperature of air, also can allow a plurality of flow processs independently of one another and the flow of increase air.
The situation generation of stopping up in order to reduce flue gas, the sectional area of this flue gas flow channel 15 is greater than the sectional area of air flow channel 16, and the spacing in this flue gas flow channel 15 between adjacent plate is more than or equal to 20mm.So can allow flue gas flow channel 15 flow more smooth and easy, reduce the risk that wherein flue gas dust stratification stops up.In addition, from relation between medium temperature and volume, temperature is higher, and volume is larger, so for the flue gas of high temperature, by its cross-sectional area arrange large than air side, can also improve whole heat transfer property.
As shown in Figure 5 and Figure 6, in order to play the effect of being convenient to sealing property test, this plate air preheater 1 also comprises each test suite 14 that is arranged on the upper and lower both sides of plate, each test suite 14 all has the first flange 141, the second flange 142, the first plugboard 143 and the second plugboard 144, this first flange 141 and the second flange 142 all have connecting plate 145, the connecting plate 145 of this first flange 141 and the second flange 142 is connected with the plate sealing of polylith plate meta in both sides respectively, this first plugboard 143 and 144 of the second plugboards all have zigzag inserted terminal 146, the salable side that is plugged on a plurality of plates of this zigzag inserted terminal 146, this first flange 141, the second flange 142, the first plugboard 143 and the second plugboard 144 also all have bending plate 147, this first flange 141, the second flange 142, the bending plate 147 of the first plugboard 143 and the second plugboard 144 has equal height plane.Like this, the utility model is when needs carry out welded seal test, only testing equipment need to be connected on the test suite 14 of a side, then opposite side test suite 14 is blocked, toward polylith plate, be directly filled with gases at high pressure so again, after maintaining, by detecting gas pressure change, can obtain rapidly the quality of welding performance.Compared with prior art, the utility model, by after the first flange 141, the second flange 142, the first plugboard 143 and the second plugboard 144 are set, has improved the comfort level of whole plate air preheater 1 when performing leak test greatly.
As shown in Figure 7, the utility model also discloses a kind of smoke heat energy recovery system with this preheater, wherein, also comprise cyclone separator 2, plate air preheater 1, air-introduced machine 3 and air blast 4, this cyclone separator 2 has high-temperature flue gas entry 21, ash discharging hole 22 and high-temperature flue gas outlet 23, the high-temperature flue gas entry 21 of this cyclone separator 2 is connected with boiler 5 exhaust outlets, this high-temperature flue gas outlet 23 is connected with the gas approach 111 of plate air preheater 1, the outlet of this air blast 4 is connected with the air intake 113 of plate air preheater 1, the air outlet slit 114 of this plate air preheater 1 is connected with the air inlet of boiler 5, 112 of the exhanst gas outlets of this plate air preheater 1 are connected with air-introduced machine 3.
More preferably, this smoke heat energy recovery system also comprises the first reducer pipe 6 and the second reducer pipe 7, and this first reducer pipe 6 is arranged on gas approach 111 places, and this second reducer pipe 7 is arranged on exhanst gas outlet 112 places.So, the utility model can not only be realized heat recovery, and because dust is much all directly discharged, therefore also there is the air-polluting of reduction effect.
Above-described embodiment and graphic and non-limiting product form of the present utility model and style, suitable variation or modification that any person of an ordinary skill in the technical field does it, all should be considered as not departing from patent category of the present utility model.
Claims (10)
1. a plate air preheater, comprise shell and the heat exchange device that is positioned at shell, the top of described shell is provided with gas approach, the bottom of shell is provided with exhanst gas outlet, the bottom of a side of shell is provided with air intake, the top of another side of shell is provided with air outlet slit, and the plate that this heat exchange device is arranged side by side by polylith forms; It is characterized in that, each plate includes plate body, this plate body is all formed with the first weld part at width two ends, this plate body in the longitudinal direction two ends is all formed with the second weld part, this plate body first weld part is connected to construct flue gas flow channel with the first weld part seal welding of the plate of an adjacent side, and the second weld part of the plate of this plate body the second weld part and adjacent opposite side is weldingly connected to construct air flow channel.
2. a kind of plate air preheater as claimed in claim 1, it is characterized in that, on this plate body, also give prominence to and be formed with how group first is given prominence to ripples and organized the second outstanding ripples more, every group first outstanding ripple all has along spaced many of plate body width, every group second outstanding ripple has along spaced many of plate body width, and each first outstanding ripple is all cross-shaped with the arbitrary second outstanding ripple.
3. a kind of plate air preheater as claimed in claim 2, is characterized in that, in same flow channel space, is provided with one group of second outstanding ripple between the outstanding ripple of adjacent set first, is provided with one group of first outstanding ripple between the outstanding ripple of adjacent set second.
4. a kind of plate air preheater as claimed in claim 1, it is characterized in that, on this plate body, be also formed with at least one seal bead, each seal bead is extended along the width of plate body, and the seal bead rigidity in adjacent plate is supported together and formed at least two flow processs to separate out air flow channel.
5. a kind of plate air preheater as claimed in claim 4, is characterized in that, this at least one seal bead all has a planar base, in adjacent plate the planar base of seal bead each other rigidity support.
6. a kind of plate air preheater as claimed in claim 1, it is characterized in that, this plate air preheater also comprises zigzag deflection plate, and this zigzag deflection plate one end indention is also embedded in the circulation of air in a side with partition adjacent run of the outside of plate the first weld part.
7. a kind of plate air preheater as claimed in claim 1, is characterized in that, the sectional area of this flue gas flow channel is greater than the sectional area of air flow channel, and the spacing in this flue gas flow channel between adjacent plate is more than or equal to 20mm.
8. a kind of plate air preheater as claimed in claim 1, it is characterized in that, this plate air preheater also comprises each test suite that is arranged on the upper and lower both sides of plate, each test suite all has the first flange, the second flange, the first plugboard and the second plugboard, this first flange and the second flange all have connecting plate, the connecting plate of this first flange and the second flange is connected with the plate sealing of polylith plate meta in both sides respectively, this first plugboard and the second plugboard all have zigzag inserted terminal, the salable side that is plugged on a plurality of plates of this zigzag inserted terminal, this first flange, the second flange, the first plugboard and the second plugboard also all have bending plate, this first flange, the second flange, the bending plate of the first plugboard and the second plugboard has equal height plane.
9. a smoke heat energy recovery system with plate air preheater as described in any one in claim 1 to 8, it is characterized in that, also comprise cyclone separator, plate air preheater, air-introduced machine and air blast, this cyclone separator has high-temperature flue gas entry, ash discharging hole and high-temperature flue gas outlet, the high-temperature flue gas entry of this cyclone separator is connected with boiler exhaust mouth, this high-temperature flue gas outlet is connected with the gas approach of plate air preheater, the outlet of this air blast is connected with the air intake of plate air preheater, the air outlet slit of this plate air preheater is connected with the air inlet of boiler, the exhanst gas outlet of this plate air preheater is connected with air-introduced machine.
10. a kind of smoke heat energy recovery system as claimed in claim 9, it is characterized in that, this smoke heat energy recovery system also comprises the first reducer pipe and the second reducer pipe, and this first reducer pipe is arranged on gas approach place, and this second reducer pipe is arranged on smoke outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420118080.6U CN203731469U (en) | 2014-03-14 | 2014-03-14 | Plate air preheater and flue gas heat energy recovery system comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420118080.6U CN203731469U (en) | 2014-03-14 | 2014-03-14 | Plate air preheater and flue gas heat energy recovery system comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203731469U true CN203731469U (en) | 2014-07-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420118080.6U Expired - Fee Related CN203731469U (en) | 2014-03-14 | 2014-03-14 | Plate air preheater and flue gas heat energy recovery system comprising same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203731469U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103868094A (en) * | 2014-03-14 | 2014-06-18 | 福建省泉州市江南冷却器厂 | Plate-type air pre-heater and flue gas heat energy recovery system with plate-type air pre-heater |
-
2014
- 2014-03-14 CN CN201420118080.6U patent/CN203731469U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103868094A (en) * | 2014-03-14 | 2014-06-18 | 福建省泉州市江南冷却器厂 | Plate-type air pre-heater and flue gas heat energy recovery system with plate-type air pre-heater |
| CN103868094B (en) * | 2014-03-14 | 2016-08-17 | 福建省泉州市江南冷却器厂 | A kind of plate air preheater and there is the smoke heat energy recovery system of this preheater |
| CN106016342A (en) * | 2014-03-14 | 2016-10-12 | 福建省泉州市江南冷却器厂 | Good-effect plate air preheater |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140723 Termination date: 20160314 |
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| CF01 | Termination of patent right due to non-payment of annual fee |