CN203336568U - Plate-type economizer - Google Patents
Plate-type economizer Download PDFInfo
- Publication number
- CN203336568U CN203336568U CN201220593752XU CN201220593752U CN203336568U CN 203336568 U CN203336568 U CN 203336568U CN 201220593752X U CN201220593752X U CN 201220593752XU CN 201220593752 U CN201220593752 U CN 201220593752U CN 203336568 U CN203336568 U CN 203336568U
- Authority
- CN
- China
- Prior art keywords
- heat exchange
- corrugated cardboard
- water tank
- plate
- cardboard sheet
- 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
Links
Images
Abstract
The utility model relates to a plate-type economizer, and belongs to the technical field of power station boiler waste heat recovery energy-efficient equipment. The plate-type economizer comprises a corrugated plate heat exchange core body (1), a heat exchanger shell (2), a first smoke inlet / outlet pipeline (3), a second smoke inlet / outlet pipeline (3'), a first water inlet / outlet water tank (4) and a second water inlet / outlet water tank (4'). The front side and the rear side of the heat exchanger shell (2) are connected with the first smoke inlet / outlet pipeline (3) and the second smoke inlet / outlet pipeline (3') respectively. The left side and the right side of the heat exchanger shell (2) are connected with the first water inlet / outlet water tank (4) and the second water inlet / outlet water tank (4') respectively. A first partition plate (19) and a second partition plate (19') are arranged in the first water inlet / outlet water tank (4) and the second water inlet / outlet water tank (4') respectively. The plate-type economizer solves the problem that the difference between water flow and smoke flow is large, increases the turbulivity of the smoke flow, improves heat transfer efficiency, and cannot be easily blocked by accumulated soot because a smoke flow pass has an automatic soot cleaning function.
Description
Technical field
The utility model belongs to station boiler waste heat recovering energy conserving equipment technical field, relates to a kind of board-like economizer.
Background technology
The economizer that station boiler adopts at present be take tubular type, fin tube type as main.Its condensate water is walked in pipe, thereby flue gas blows and plunders pipeline and realize heat exchange by blower fan.Adopt the cross-flow heat exchange between flue gas and condensate water.But this economizer exchange capability of heat is poor, need to consume a large amount of tubing, floor space is large, and, because flue gas and heat exchanger tube are vertical the contacts, causes flow resistance to increase, and easily dust stratification and heat exchanger tube wearing and tearing strengthen, and affect the life-span of economizer.
In prior art, less to the report of board-like economizer, the utility model patent that patent publication No. is CN202253576U provides a kind of plate type economizer for power station boiler.This patent, because smoke entrance plate plane area spacing only has half of ripple height, has affected the smoke entrance flow and has strengthened flue gas resistance.Simultaneously, the corrugated cardboard sheet of this board-like economizer is that the light face is straight-through, although can reduce flue gas resistance, fume side does not have the heat transfer measure of strengthening, must cause the fume side coefficient of heat transfer low, can cause unavoidably the poor result of whole economizer heat-transfer effect.In addition, due to flue gas and water ratio, density and coefficient of heat transfer gap are larger, if do not consider the series connection of water side, can only make up by increasing heat exchange area inevitable like this volume and the cost that can increase economizer.
The utility model content
The purpose of this utility model is that the defect for overcoming prior art provides a kind of Novel utility boiler board-like economizer, and this economizer compact conformation, heat exchange area increase, and good effect of heat exchange, has from the deashing function and is not easy dust stratification and fouling, and production cost is low.
For achieving the above object, the utility model is by the following technical solutions:
A kind of board-like economizer, comprise corrugated plating heat exchange core body, outer cover of heat exchanger, first, second smoke entrance pipeline and first, second water entrance water tank, the forward and backward both sides of described outer cover of heat exchanger are connected with respectively first, second smoke entrance pipeline, arranged on left and right sides is connected with respectively first, second water entrance water tank, in described first, second water entrance water tank, is provided with first, second dividing plate.
Described corrugated plating heat exchange core body is stacked together by 2 above heat exchange corrugated cardboard sheets, and wherein the heat exchange corrugated cardboard sheet is the thin plate that surrounding has first, second, third, fourth plane area, and wherein first, second plane area upwarps; Be distributed with the crest that be intervally arranged and the trough parallel with plane area on the plate face of described corrugated heat exchange plate, the height that first, second plane area on corrugated plating upwarps and the summit of trough are on a horizontal plane, and the second plane area width is than long 0～1/2 wavelength of the first plane area width.
Described heat exchange corrugated cardboard sheet stacks the number of plies and is preferably the 2-1000 piece.
The mode that stacks of described heat exchange corrugated cardboard sheet is: two adjacent heat exchange corrugated cardboard sheets, the trough of one of them heat exchange corrugated cardboard sheet is relative with the crest of another heat exchange corrugated cardboard sheet, duct between this crest and trough is the flue gas tubular conduit, and the crest of one of them heat exchange corrugated cardboard sheet contacts and stacks with the trough of another heat exchange corrugated cardboard sheet.
Described two adjacent heat exchange corrugated cardboard sheet dislocation stack and are formed with the plate bundle, and the waveform shape passage that the dislocation of adjacent panels interfascicular stacks formation is the current undulating path.By the height that reduces heat exchange corrugated cardboard sheet crest and the spacing that increases the plate bundle, tubular conduit also can be used as water stream channel, and plate interfascicular undulating path also can be used as exhaust gases passes.
Plate face in described heat exchange corrugated cardboard sheet is wavy (also claiming S shape) or is plane, and wherein the flue gas tubular conduit is S shape and becomes 15 °～90 ° angles with corrugated cardboard sheet plane area horizontal line.
The crest of described flue gas tubular conduit is or/and the trough upper punch is pressed with groove.
Described current undulating path is communicated with semicircular first, second water entrance water tank.
Be fixed with respectively first, second dividing plate on described first, second plane area, described first, second dividing plate level respectively is fixed in semicircular first, second water entrance water tank, its level altitude is respectively 1/3 and 2/3 of semicircular first, second water entrance water tank height, describedly fixedly is preferably welding.
Be welded with some flow guide bars on described first, second dividing plate, flow guide bar is the arrangement of Eight characters shape and is fixed on first, second dividing plate, the guiding water (flow) direction, in board-like economizer, Water flow-path has first, second, third 3 flow processs, and these three flow processs are carried out in semicircle the first water entrance water tank, current undulating path and semicircular the second water entrance water tank.
One end uniform welding of described flow guide bar is in the junction of first, second dividing plate and first, second plane area, the other end is welded on first, second dividing plate, the friendship of flow guide bar and the first dividing plate and first, second plane area is wired as 15 °～60 °, and unidirectional flow guide bar is parallel in twos.
The economizer that the utility model provides has following beneficial effect:
The board-like economizer that the utility model provides has solved water and the large problem of flue gas flow difference, has increased the turbulivity of flue gas fluid, has improved heat transfer efficiency, and flue gas flow channel has from the deashing function, is difficult for dust stratification and blocks.
The flue gas tubular conduit that the utility model provides is S-shaped, flue gas tubular conduit and corrugated cardboard sheet horizontal sextant angle are 15 °-90 ° (90 ° is straight channel), fluid produces secondary flow after entering heat exchanger channels, like this generation in boundary layer is produced to perturbation action, can arrive the effect of augmentation of heat transfer;
After corrugated plating crest place stamps out groove, the fume side heat exchange area increases to some extent, and the fluid turbulent effect increases, and heat transfer effect strengthens and has from the deashing function, and flue is difficult for dust stratification and blocks;
This kind of New-type plate economizer has that heat transfer coefficient is higher (can reach 100W/m
2. more than ℃); Flue gas resistance falls little (being generally less than 200Pa); Air pressure range wide (ability to bear is that vacuum is to 3MPa); Operating temperature range large (operating temperature is-100 ℃ to 900 ℃); Long service life; Easy for installation, the characteristics such as strong adaptability.
The accompanying drawing explanation
Fig. 1 is economizer overall structure decomposing schematic representation in the utility model embodiment.
Fig. 2 is economizer overall structure generalized section in the utility model embodiment.
Fig. 3 is three schematic flow sheets of water in the utility model embodiment.
Fig. 4 is the utility model embodiment heat exchange corrugated board structure schematic diagram.
Fig. 5 is the utility model embodiment heat exchange core body structural profile schematic diagram.
Fig. 6 is the utility model embodiment flue gas and water cross-flow adverse current mixture length schematic diagram.
Fig. 7 is the utility model embodiment flow guide bar structural representation.
The accompanying drawing mark:
1 corrugated plating heat exchange core body, 2 outer cover of heat exchanger,
3,3 ' first, second smoke entrance pipeline, 4,4 ' first, second water entrance water tank,
5 heat exchange corrugated cardboard sheets, 6,7,8 Water flow-paths
9 corrugated regions, 10 flue gas tubular conduits
11,12,13,13 ' first, second, third, fourth corrugated cardboard sheet plane area,
14 grooves, 15 current undulating paths,
16 troughs, 17 crests,
18 plate bundles, 19,19 ' first, second dividing plate,
20 flow guide bars, 21 flue gas tubular conduits and corrugated plating plane included angle.
The specific embodiment
Below in conjunction with the accompanying drawing illustrated embodiment, the utility model is further described.
A kind of board-like economizer (as shown in Figure 1-2), comprise corrugated plating heat exchange core body 1, outer cover of heat exchanger 2, first, second smoke entrance pipeline 3,3 ' and first, second water entrance water tank 4,4 ', the forward and backward both sides of outer cover of heat exchanger 2 are connected with respectively first, second smoke entrance pipeline 3,3 ', arranged on left and right sides is connected with respectively first, second water entrance water tank 4,4 ', first, second water entrance water tank 4, be provided with first, second dividing plate 19,19 ' in 4 '.
Corrugated plating heat exchange core body 1 is stacked together (as shown in Figure 2) by 2 above heat exchange corrugated cardboard sheets 5, and wherein heat exchange corrugated cardboard sheet 5 has first, second, third, fourth plane area 11,12 for surrounding, 13,13 ' thin plate, wherein first, second plane area 11,12 upwarps (as shown in Figure 4); On the plate face of corrugated heat exchange plate 5, be distributed with and the first, the 3rd plane area 11, the 13 parallel crest be intervally arranged 17 and troughs 16, first, second plane area 11 on corrugated plating, the summit of 12 height that upwarp and trough 16 is on a horizontal plane, and the second plane area 12 width are than long 0～1/2 wavelength of the first plane area 11 width.
It is the 2-1000 piece that heat exchange corrugated cardboard sheet 5 stacks the number of plies.
The mode that stacks of heat exchange corrugated cardboard sheet is: two adjacent heat exchange corrugated cardboard sheets 5, the trough of one of them heat exchange corrugated cardboard sheet 5 is relative with the crest of another heat exchange corrugated cardboard sheet 5, duct between this crest and trough is flue gas tubulose path 10, and the crest of one of them heat exchange corrugated cardboard sheet 5 contacts and stacks with the trough of another heat exchange corrugated cardboard sheet 5.
Two adjacent heat exchange corrugated cardboard sheet 5 dislocation stack and are formed with plate bundle 18(as shown in Figure 5), the waveform shape passage that 18 dislocation of adjacent panels bundle stack formation is current undulating path 15.Plate face in heat exchange corrugated cardboard sheet 5 is, and wavy (also become S shape, as shown in Figure 4), wherein flue gas tubulose path 10 is S shape and becomes 15 °～90 ° angles 21 with corrugated cardboard sheet plane area 13 horizontal lines.
The crest of flue gas tubulose path 10 is or/and the trough upper punch is pressed with groove 14.
Adjacent two plate bundles, 18 dislocation stack, and are formed with current undulating path 15 between the plate bundle.
Current undulating path 15 is communicated with semicircular first, second water entrance water tank 4,4 '.
Be fixed with respectively first, second dividing plate 19 on first, second plane area 11,12,19 ', first, second dividing plate 19,19 ' respectively level be fixed in semicircular first, second water entrance water tank 4, in 4 ', its level altitude is respectively 1/3 and 2/3 of semicircle first, second water entrance water tank 4,4 ' height and goes out, and is fixed as welding.
First, second dividing plate 19, be welded with some flow guide bar 20(on 19 ' as shown in Figure 7), flow guide bar 20 is the arrangement of Eight characters shape and is fixed on first, second dividing plate 19, on 19 ', the guiding water (flow) direction, in plate type heat exchanger, first, second, third Water flow-path is divided into 6,7,8 three flow processs, and these three flow processs are carried out in the semicircle water tank 4 of the first water entrance, current undulating path 15 and semicircle the second water entrance water tank 4 '.
One end uniform welding of flow guide bar 20 is in first, second dividing plate 19,19 ' and plane area first, second 11,12 junction, the other end is welded in first, second dividing plate 19, on 19 ', the friendship of flow guide bar and the first dividing plate 19 and first, second plane area 11,12 is wired as 15 °～60 °, and unidirectional flow guide bar is parallel in twos.
As shown in Figure 3, in order to improve heat transfer efficiency, the flow process more than 16,7 and 8 that water is set can make water fully heat, and has solved the problem that flue gas and discharge difference are large.Be welded with some flow guide bars 20 on dividing plate, flow guide bar 20 is the arrangement of Eight characters shape and is fixed on first, second dividing plate 19, on 19 ', the guiding water (flow) direction, in plate type heat exchanger, Water flow-path is divided into 6,7,8 three flow processs, and these three flow processs are carried out in semicircular the first water entrance water tank 4, current undulating path 15 and semicircular the second water entrance water tank 4 '.
Fig. 7 is the utility model embodiment flow guide bar structural representation, in order to make to import and export current, be evenly distributed, increased the flow guide bar 20 of guiding water (flow) direction on the first dividing plate 19, one end uniform welding of flow guide bar 20 is in first, second dividing plate 19,19 ' and first, second plane area 11,12 junction, the other end is welded in first, second dividing plate 19, on 19 ', flow guide bar and first dividing plate 19 and first, second plane area 11,12 friendship is wired as 15 °～60 °, and unidirectional flow guide bar is parallel in twos.Can find out from this Fig. 7, use dividing plate can change the flow process of water, water is heated back and forth, effectively improve the economizer heat transfer effect.
Fig. 6 is the schematic diagram of Water flow-path in another embodiment of the utility model.The import and export of water are in the both sides up and down of economizer, and water advances from an effluent, through cross-flow and flue gas heat exchange, secondly, through adverse current and flue gas heat exchange, finally after cross-flow and flue gas heat exchange, flow out again.This heat exchange mode can significantly improve the heat exchange efficiency of flue gas and water.
With reference to figure 4, corrugated cardboard sheet 5 is pressed into the bellows-shaped such as semiellipse, trapezoidal, rectangle, sine wave by corrosion resistant plate, titanium steel plate, carbon steel sheet and acid corrosion-resistant steel plate etc. by press.Corrugated plating 5 is comprised of corrugated regions 9 and first, second plane area 11,12 and 13, and 11,12 of first, second plane areas of corrugated plating side are to extend to crest 17 directions, and its first, second plane area 11,12 and crest 17 summits are on a horizontal plane.Plate bundle 18 is first, second plane area 11,12 welded seals in both sides, also can add the edge strip welded seal of 0.1mm-10mm at first, second plane area 11,12 by argon arc welding or laser weld.Plate bundle 18 stacks with 18 dislocation of plate bundle, and the gap between plate bundle 18 just forms the undulating path 15 of current.By the height that reduces corrugated cardboard sheet 5 crests 17 and the spacing that increases plate bundle 18, flue gas tubulose path 10 also can be used as water stream channel, and current undulating path 15 also can be used as exhaust gases passes.
In another preferred embodiment of the utility model, by the height that reduces heat exchange corrugated cardboard sheet 5 crests 17 and the spacing that increases the plate bundle, tubular conduit 10 also can be used as water stream channel, and plate interfascicular undulating path 15 also can be used as exhaust gases passes.
In another preferred embodiment of the utility model, the plate face in heat exchange corrugated cardboard sheet 5 is wavy S shape or is plane.
The board-like economizer that the utility model provides is applicable to gas-gas, solution-air and liquid-liquid heat exchanger, as air cooler, condenser and evaporimeter etc.
The above-mentioned description to embodiment is can understand and apply the utility model for ease of those skilled in the art.The person skilled in the art obviously can easily make various modifications to these embodiment, and General Principle described herein is applied in other embodiment and needn't passes through performing creative labour.Therefore, the utility model is not limited to the embodiment here, and those skilled in the art are according to announcement of the present utility model, and not breaking away from the improvement that the utility model category makes and revise all should be within protection domain of the present utility model.
Claims (10)
1. a board-like economizer, it is characterized in that: comprise corrugated plating heat exchange core body (1), outer cover of heat exchanger (2), first, second smoke entrance pipeline (3,3 ') and first, second water entrance water tank (4,4 '), the forward and backward both sides of described outer cover of heat exchanger (2) are connected with respectively first, second smoke entrance pipeline (3,3 '), arranged on left and right sides is connected with respectively first, second water entrance water tank (4,4 '), described first, second water entrance water tank (4,4 ') be provided with first, second dividing plate (19,19 ') in.
2. board-like economizer according to claim 1, it is characterized in that: described corrugated plating heat exchange core body (1) is stacked together by 2 above heat exchange corrugated cardboard sheets (5), wherein heat exchange corrugated cardboard sheet (5) has first, second, third, fourth plane area (11 for surrounding, 12,13,13 ') thin plate, wherein first, second plane area (11,12) upwarps;
Or on the plate face of described corrugated heat exchange plate (5), be distributed with and the first, the 3rd plane area (11,13) the parallel crest be intervally arranged (17) and trough (16), first, second plane area (11 on corrugated plating, the summit of the height 12) upwarped and trough (16) is on a horizontal plane, and the second plane area (12) width will be grown 0～1/2 wavelength than the first plane area (11) width.
3. board-like economizer according to claim 2, it is characterized in that: the number of plies that stacks of described heat exchange corrugated cardboard sheet (5) is the 2-1000 piece.
4. board-like economizer according to claim 2, it is characterized in that: the mode that stacks of described heat exchange corrugated cardboard sheet is: two adjacent heat exchange corrugated cardboard sheets (5), the trough of one of them heat exchange corrugated cardboard sheet (5) is relative with the crest of another heat exchange corrugated cardboard sheet (5), duct between this crest and trough is flue gas tubular conduit (10), and the crest of one of them heat exchange corrugated cardboard sheet (5) contacts and stacks with the trough of another heat exchange corrugated cardboard sheet (5).
5. board-like economizer according to claim 2, it is characterized in that: described two adjacent heat exchange corrugated cardboard sheet (5) dislocation stack and are formed with plate bundle (18), and the waveform shape passage that stacks formation that misplaces between adjacent panels bundle (18) is current undulating path (15).
6. board-like economizer according to claim 4, it is characterized in that: the plate face in described heat exchange corrugated cardboard sheet (5) is wavy or is plane, and wherein flue gas tubular conduit (10) is S shape and becomes 15 °～90 ° angles (21) with corrugated cardboard sheet plane area (13) horizontal line.
7. board-like economizer according to claim 4, it is characterized in that: the crest of described flue gas tubular conduit (10) is or/and trough is provided with groove (14).
8. board-like economizer according to claim 5, is characterized in that: described current undulating path (15) and semicircular first, second water entrance water tank (4,4 ') connection.
9. board-like economizer according to claim 1, it is characterized in that: described first, second plane area is fixed with respectively first, second dividing plate (19 on (11,12), 19 '), described first, second dividing plate (19,19 ') level is fixed in semicircular first, second water entrance water tank (4,4 ') respectively, and its level altitude is respectively semicircular first, second water entrance water tank (4,4 ') 1/3 and 2/3 of height, describedly fixedly be preferably welding.
10. board-like economizer according to claim 9, it is characterized in that: described first, second dividing plate (19,19 ') be welded with some flow guide bars (20) on, flow guide bar (20) is the arrangement of Eight characters shape and is fixed on first, second dividing plate (19,19 ') on, the guiding water (flow) direction, in plate type heat exchanger, first, second, third Water flow-path is divided into (6), (7), (8) three flow processs, and these three flow processs are carried out in semicircular the first water entrance water tank (4), current undulating path (15) and semicircular the second water entrance water tank (4 ');
Or an end uniform welding of described flow guide bar (20) is in first, second dividing plate (19,19 ') and first, second plane area (11,12) junction, the other end is welded in first, second dividing plate (19,19 ') on, the friendship of flow guide bar and the first dividing plate (19) and first, second plane area (11,12) is wired as 15 °～60 °, and unidirectional flow guide bar is parallel in twos.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220593752XU CN203336568U (en) | 2012-11-12 | 2012-11-12 | Plate-type economizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220593752XU CN203336568U (en) | 2012-11-12 | 2012-11-12 | Plate-type economizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203336568U true CN203336568U (en) | 2013-12-11 |
Family
ID=49705240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220593752XU Expired - Fee Related CN203336568U (en) | 2012-11-12 | 2012-11-12 | Plate-type economizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203336568U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102954459A (en) * | 2012-11-12 | 2013-03-06 | 同济大学 | Novel plate type economizer |
| CN104154784A (en) * | 2014-08-01 | 2014-11-19 | 浙江银轮机械股份有限公司 | Aluminum-seal utilized evaporator for road diesel engine waste heat utilization ORC (organic Rankine cycle) system |
| CN104930564A (en) * | 2015-07-14 | 2015-09-23 | 贺曼 | Hot water device utilizing cooking range waste heat |
| CN104976607A (en) * | 2015-06-17 | 2015-10-14 | 大唐(北京)能源管理有限公司 | Boiler smoke-exhaustion waste heat recycling system additionally provided with heat exchange elements |
| CN112964099A (en) * | 2021-02-02 | 2021-06-15 | 齐鲁工业大学 | All-welded plate-shell heat exchanger and machining method thereof |
-
2012
- 2012-11-12 CN CN201220593752XU patent/CN203336568U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102954459A (en) * | 2012-11-12 | 2013-03-06 | 同济大学 | Novel plate type economizer |
| CN102954459B (en) * | 2012-11-12 | 2014-09-17 | 同济大学 | Novel plate type economizer |
| CN104154784A (en) * | 2014-08-01 | 2014-11-19 | 浙江银轮机械股份有限公司 | Aluminum-seal utilized evaporator for road diesel engine waste heat utilization ORC (organic Rankine cycle) system |
| CN104154784B (en) * | 2014-08-01 | 2015-11-25 | 浙江银轮机械股份有限公司 | A kind of aluminium strip of paper used for sealing evaporimeter for road diesel engine Waste Heat Reuse ORC system |
| CN104976607A (en) * | 2015-06-17 | 2015-10-14 | 大唐(北京)能源管理有限公司 | Boiler smoke-exhaustion waste heat recycling system additionally provided with heat exchange elements |
| CN104976607B (en) * | 2015-06-17 | 2018-06-08 | 大唐(北京)能源管理有限公司 | A kind of boiler exhaust gas residual neat recovering system for adding heat exchange element |
| CN104930564A (en) * | 2015-07-14 | 2015-09-23 | 贺曼 | Hot water device utilizing cooking range waste heat |
| CN112964099A (en) * | 2021-02-02 | 2021-06-15 | 齐鲁工业大学 | All-welded plate-shell heat exchanger and machining method thereof |
| CN112964099B (en) * | 2021-02-02 | 2023-08-18 | 山东国辰实业集团热能装备有限公司 | All-welded plate-shell heat exchanger and processing method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102954459B (en) | Novel plate type economizer | |
| CN202253576U (en) | Plate type economizer for power station boiler | |
| CN202267394U (en) | Primary surface heat exchanger for flue gas waste heat recovery | |
| CN203336568U (en) | Plate-type economizer | |
| CN204648683U (en) | Double-air-duct multi-path bypass type condensation heat exchanger | |
| CN108917174B (en) | Gas-electricity coupling limit condensation cast aluminum silicon magnesium gas water heater | |
| CN106705716A (en) | Plate-type gas gas-heat exchanger | |
| CN105737182B (en) | Flue gas deep cooler | |
| CN204115231U (en) | Multi-way winding pipe type condensation heat exchanger | |
| CN105042622A (en) | Air preheater based one air-water heat exchange | |
| CN104033881B (en) | A kind of shell-and-plate economizer | |
| CN204202456U (en) | Asymmetric phase-change heat-exchanger | |
| CN107023817B (en) | Low-temperature economizer with straight-through structure | |
| CN113154426A (en) | Boiler system and self-whitening waste heat recovery device thereof | |
| CN203147732U (en) | Enameled plate type coal economizer | |
| CN103759288B (en) | Plate type air preheater | |
| CN203115974U (en) | Plate-shell-type coal economizer | |
| CN206656631U (en) | A kind of board-like gas gas-heat exchanger | |
| CN214581190U (en) | Boiler system and self-whitening waste heat recovery device thereof | |
| CN204372899U (en) | A kind of station boiler shell-and-plate economizer | |
| CN202432894U (en) | Efficient wave-surface plate type coal economizers | |
| CN112879895A (en) | Waste heat recovery system, boiler system and waste heat recovery method | |
| CN205137516U (en) | Air heater based on air water heat transfer | |
| CN107842873A (en) | A kind of composite plane type gas thermal energy converter | |
| CN216523302U (en) | Heat exchanger for recycling waste gas and waste heat |
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 |
Granted publication date: 20131211 Termination date: 20141112 |
|
| EXPY | Termination of patent right or utility model |