CN203810956U - V-shaped dry and wet closed cooling tower - Google Patents
V-shaped dry and wet closed cooling tower Download PDFInfo
- Publication number
- CN203810956U CN203810956U CN201420212730.3U CN201420212730U CN203810956U CN 203810956 U CN203810956 U CN 203810956U CN 201420212730 U CN201420212730 U CN 201420212730U CN 203810956 U CN203810956 U CN 203810956U
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- Prior art keywords
- heat exchanger
- cooling tower
- dry
- closed cooling
- side heat
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- 238000001816 cooling Methods 0.000 title claims abstract description 71
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 49
- 238000004140 cleaning Methods 0.000 claims abstract description 30
- 239000007921 spray Substances 0.000 claims description 28
- 239000000779 smoke Substances 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 13
- 238000005507 spraying Methods 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000012546 transfer Methods 0.000 description 8
- 229910000838 Al alloy Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 125000004122 cyclic group Chemical group 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000013589 supplement Substances 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 2
- 238000005219 brazing Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 238000013517 stratification Methods 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model relates to a V-shaped dry and wet closed cooling tower. The V-shaped dry and wet closed cooling tower comprises a box body, a heat exchanger arranged in the box body, a draught fan arranged on the top of the box body, a water collector, a spraying device and a cleaning trolley, wherein the heat exchanger is in a V-shaped structure and formed by two side heat exchange plates with inclined angles; each side heat exchange plate is an inner-outer fin flat tube bundle. The V-shaped dry and wet closed cooling tower has the beneficial effects that radiating space in the box body of an air cooler can be utilized effectively; the spraying cooling and cleaning effects of fin tubes are improved; the high heat exchange performance of the inner-outer fin flat tubes is fully played; the cooling and heat exchange effects of the inner-outer fin flat tubes in the air cooler is improved.
Description
Technical field
The utility model belongs to industrial cooling device, relates in particular to dry, the wet closed cooling tower of a kind of V-type.
Background technology
According to " the 12 five-year-plan outline of national economy and social development ", during " 12 ", unit GDP energy resource consumption and unit industrial added value water consumption need to reduce respectively 16%, 30%.According to this target, be on average 3.2% and 6% to annual energy-saving and water-saving target.The proportion of the shared energy consumption of industrial colling and water consumption is 20%～30%, and taking thermal power plant, in example whole plant water consumption, direct air cooling system is than traditional water-cooling system water saving 65%, and as can be seen here, exploitation air cooler can effectively reduce energy consumption and water consumption.Adopt finned tube, especially the air cooler water-saving result of the flat pipe of inside and outside fin is obvious, its main heat exchange element is for mostly being vertically disposed finned tube, its defect is effectively to utilize the heat-dissipating space in air cooler casing, poor to the cooling and cleaning performance of the spraying of finned tube, affect the cooling effect of air cooler.
Summary of the invention
The purpose of this utility model is the technical scheme that proposes dry, the wet closed cooling tower of a kind of V-type, effectively utilize with the heat-dissipating space in air cooler casing, the spraying that improves finned tube is cooling poor with cleaning performance, thereby improves the cooling heat transferring effect of the flat pipe of inside and outside fin in air cooler.
To achieve these goals, the technical solution of the utility model is: dry, the wet closed cooling tower of a kind of V-type, comprise casing, be arranged on heat exchanger in casing, be arranged on casing top blower unit, be arranged on water collection device, spray equipment, the cleaning dolly of blower unit below; Described heat exchanger forms V character form structure by two side heat exchanger plates that are provided with inclination angle; Described side heat exchanger plates is the flat pipe tube bank of inside and outside fin.
Further, the flat pipe tube bank of described inside and outside fin comprises the flat pipe of inside and outside fin, the flat pipe of described inside and outside fin is the platypelloid type radiating tube of both ends open, the internal diameter of the flat pipe of inside and outside fin is provided with the inner fin that internal diameter is separated into multiple paths, and the external diameter of the flat pipe of inside and outside fin is provided with many radiating fins.
Further, described heat exchanger is positive V character form structure, and described two side heat exchanger plates connect in lower end.
Further, described heat exchanger is inverted v-shaped structure, and described two side heat exchanger plates connect in upper end.
Further, the angle between described two side heat exchanger plates is 40 ° to 100 °.
Further, in order to strengthen heat exchange effect under hot climate condition, described spray equipment is arranged on the side top of described side heat exchanger plates; Spray equipment is provided with the shower nozzle that sprays water smoke to side heat exchanger plates.
Further, in order to keep the clean of heat exchanger, above the side of each described side heat exchanger plates, be provided with described cleaning dolly, cleaning dolly is arranged on to clean on guide rail and moves as vertical and horizontal, clean dolly cleaning the complete whole side heat exchanger plates of mobile covering on guide rail, clean dolly and be provided with the single or multiple high-pressure nozzles to side heat exchanger plates by high pressure water jets.
Further, described blower unit comprises by motor-driven air-introduced machine, and the diameter of described air-introduced machine is 2m～11m; Described motor straight connects in succession or connects air-introduced machine by arrangements for speed regulation; Every air-introduced machine is arranged in an air duct.
Further, in order to be conducive to carry out suitability for industrialized production, reduce costs, dry, the wet closed cooling tower of described V-type comprises one or more foursquare cooling units; Each cooling unit is provided with independently heat exchanger, blower unit, water collection device, spray equipment and cleaning dolly; Multiple cooling unit linear array connect into dry, the wet closed cooling tower of complete V-type by casing; The heat exchanger of multiple cooling units is connected by pipeline.
Further, it is characterized in that, the length of side of described square cooling unit is 3m～12m.
The beneficial effects of the utility model are: can effectively utilize with the heat-dissipating space in air cooler casing, the spraying that improves finned tube is cooling poor with cleaning performance, give full play to the good heat exchange property of the flat pipe of inside and outside fin, improved the cooling heat transferring effect of the flat pipe of inside and outside fin in air cooler; Adopt having unit structure, in order to be conducive to carry out suitability for industrialized production, reduce costs.
Below in conjunction with drawings and Examples, the utility model is described in detail.
Brief description of the drawings
Fig. 1 is the utility model structure chart, and heat exchanger is positive v-shaped structure;
Fig. 2 is the structure chart of the flat pipe tube bank of the utility model inside and outside fin;
Fig. 3 is the having unit structure schematic diagram that the utlity model has four cooling units;
Fig. 4 is that the utility model heat exchanger is inverted V-shaped structure chart;
Fig. 5 is the having unit structure schematic diagram that the utlity model has two cooling units.
Detailed description of the invention
Adopt the flat pipe of inside and outside fin as heat exchange element, fin flat tube effective heat transfer area compared with common finned tube is larger, and heat transfer dead angle is less.Adopt the flat tube can attenuate wall thickness, thermal resistance be less simultaneously, and heat transfer coefficient is higher.
The width dimensions of flat tube is larger, single fin flat tube can replace the heat transfer effect of many row's fin pipes, so fin flat tube adopts single row configuration more, the disorderly caused pipe bursting by freezing of thermal balance and corrosion between the dust stratification problem that the finned tubes of row more than can effectively avoiding bring and inner and outer pipes.Because single row configuration air side resistance is little, therefore can select the air blast of smaller power.
Fin flat tube adopts inside and outside fin structure, inner fin can play drainage, and to be thermal medium more even at the inner flow velocity of flat tube, and inner fin can improve flat tube in addition rigidity and intensity avoid pipe due to the unstable phenomenon of rigidity deficiency under external and internal pressure effect.The increase of inner fin can reduce the wall thickness of flat tube in addition, and thermal resistance reduces and effectively improves heat transfer coefficient, saves material and cost.
The flat pipe of inside and outside fin conventionally adopts with water-spray system and is used in conjunction with, and can regulate according to operating mode, and the sprinkling that nebulizes when unlatching, at fin surface evaporation endothermic, improves air side heat transfer coefficient.Realize winter and do not spray water, summer auxiliary heat-exchanging.In identical heat exchange amount situation, can select less heat exchange area, reduce equipment cost.
Can use and clean dolly periodic cleaning tube bank surface at the inner surface of the flat pipe tube bank of inside and outside fin, avoid dust stratification and environmental contaminants to affect heat-transfer effect in tube bank surface attachment.
Use the flat pipe tube bank of inside and outside fin cooler in fields such as chemical industry, electric power, petrochemical industry, can efficiency improve 25% than conventional dry air cooling, specific humidity air cooling water saving 50%.
As Fig. 1, in order further to improve the effect of the flat pipe of inside and outside fin in air cooler, the utility model proposes dry, the wet closed cooling tower of a kind of V-type, comprise casing 10, be arranged on the heat exchanger 20 in casing, the blower unit 30 that is arranged on casing top, the water collection device 40 that is arranged on blower unit below, spray equipment 50, cleaning dolly 60; Described heat exchanger forms V character form structure by two side heat exchanger plates that are provided with inclination angle; Described side heat exchanger plates is the flat pipe tube bank of inside and outside fin.
As Fig. 2, the flat pipe tube bank of described inside and outside fin comprises the flat pipe 21 of inside and outside fin, the flat pipe of described inside and outside fin is the platypelloid type radiating tube of both ends open, the internal diameter of the flat pipe of inside and outside fin is provided with the interior wing 22 that internal diameter is separated into multiple paths, and the external diameter of the flat pipe of inside and outside fin is provided with many radiating fins 23.
The material of the flat pipe of inside and outside fin adopts aluminium alloy conventionally, formed by brazing fin outside the aluminum flat tube through strengthening, the parameter of flat tube is as follows: flat width 100mm～400mm, flat tube height 5mm～30mm, flat tube thickness 0.5mm～3mm, flat tube length 2m～24m, flat tube inner chamber is provided with 1～16 of reinforcement, thickness 0.15mm～the 0.4mm of aluminium fin, fin brazed is in the plane of flat tube both sides.
Described heat exchanger can be positive V character form structure, and two side heat exchanger plates connect in lower end; Heat exchanger can be also inverted v-shaped structure, and two side heat exchanger plates connect in upper end.
Included angle A between described two side heat exchanger plates is 40 ° to 100 °.
Described spray equipment is arranged on the side top of described side heat exchanger plates; Spray equipment is provided with the shower nozzle 51 that sprays water smoke to side heat exchanger plates.
Above the side of each described side heat exchanger plates, be provided with described cleaning dolly, cleaning dolly is arranged on to clean on guide rail 61 and moves as vertical and horizontal, clean dolly cleaning the complete whole side heat exchanger plates of mobile covering on guide rail, clean dolly and be provided with the single or multiple high-pressure nozzles 62 to side heat exchanger plates by high pressure water jets.
Described blower unit comprises the air-introduced machine 32 being driven by motor 31, and the diameter of described air-introduced machine is 2m～11m; Described motor straight connects in succession or connects air-introduced machine by arrangements for speed regulation; Every air-introduced machine is arranged in an air duct 33.
Dry, the wet closed cooling tower of V-type can adopt normalized mode to manufacture, and every dry, wet closed cooling tower of V-type comprises one or more foursquare cooling units; Each cooling unit is provided with independently heat exchanger, blower unit, water collection device, spray equipment and cleaning dolly; Multiple cooling unit linear array connect into dry, the wet closed cooling tower of complete V-type by casing; The heat exchanger of multiple cooling units is connected by pipeline.The length of side S of square cooling unit is 3m～12m.
Embodiment mono-:
Fig. 3 as shown in Figure 1, Figure 2,, dry, the wet closed cooling tower of a kind of V-type, comprises casing 10, is arranged on the heat exchanger 20 in casing, the blower unit 30 that is arranged on casing top, the water collection device 40 that is arranged on blower unit below, spray equipment 50, cleaning dolly 60.
As Fig. 3, the square cooling unit that the present embodiment is 3m by four length of sides forms, and each cooling unit is provided with independently heat exchanger, blower unit, water collection device, spray equipment and cleaning dolly; Four cooling unit linear array connect into dry, the wet closed cooling tower of complete V-type by casing; The heat exchanger of four cooling units is connected by pipeline.
Described casing is rectangle, long 12 meters of casing, and casing is wide 3 meters, and casing is high 4.7 meters.
Described heat exchanger forms positive V character form structure by two side heat exchanger plates that are provided with inclination angle, and two side heat exchanger plates connect in lower end, included angle A=45 ° between two side heat exchanger plates.
Described side heat exchanger plates is the flat pipe tube bank of inside and outside fin.The material of the flat pipe of inside and outside fin adopts aluminium alloy, is formed by brazing fin outside the aluminum flat tube through strengthening, and the internal diameter of the flat pipe of inside and outside fin is separated into 10 square paths; Outer fin is snakelike, and the parameter of flat tube is as follows: flat width 220mm, and flat tube height 8mm, flat tube thickness 1.0mm, flat tube length 2.5m, flat tube inner chamber is provided with 9 of reinforcements, and the fin clearance D of outer fin is 5mm, and height H is 28mm.The flat pipe of inside and outside fin adopts aluminium and aluminium alloy to make.The thickness 0.20mm of outer fin, fin brazed is in the plane of flat tube both sides.
Have the top that 4 air-introduced machines are arranged on described casing, every corresponding cooling unit of air-introduced machine, the diameter of air-introduced machine is 2.4m.Described water collection device is installed below air-introduced machine.
Described spray equipment is provided with multiple shower nozzles that spray water smoke to the tube bank of inside and outside fin flat tube.Spray equipment also comprises cyclic water tank 52, ball-cock assembly 53, water supplement port 54, and described cyclic water tank is positioned at described bottom half, is connected with described water supplement port for the described ball-cock assembly of controlling water supplement port break-make, and ball-cock assembly is arranged in described cyclic water tank; Having two circulating pumps 55 to be arranged on respectively casing both sides is that shower nozzle supplies water; Every circulating pump water inlet is communicated with cyclic water tank, and the water inlet of circulating pump delivery port and an electric water treatment device 56 is by pipeline communication, and the delivery port of electric water treatment device connects described shower nozzle by pipeline.
Towards a side at casing center, described cleaning dolly is installed in the flat pipe tube bank of inside and outside fin.Each cooling unit has two cleaning dollies to be arranged on the longitudinal rail and cross slide way being fixed on casing, described longitudinal rail and cross slide way are arranged on respectively the inner side of the flat pipe tube bank of inside and outside fin of both sides, every cleaning dolly is provided with two high-pressure nozzles, clean dolly and on guide rail, do horizontal and vertical scanning motion from top to bottom, the water under high pressure of injection is covered to the flat pipe tube bank of whole inside and outside fins; The level run speed of cleaning dolly is 1.5 m/min, and described water under high pressure is deionized water or fresh water, and the spray flow of single high-pressure nozzle is 10 liters/min, and the pressure of described water under high pressure is 9 MPa.
The utility model in use, through the flat pipe tube bank of inside and outside fin, lower the temperature to the process fluid in heat exchanger under air-introduced machine effect by air; Shower water is opened where necessary, auxiliary temperature-reducing.
Casing adopts frame structure, and entirety is firm, realizes operational effect; Frame structure can be steel construction, aluminium alloy structure, reinforced concrete structure.
Adopt the structure of assembled unit to be conducive to carry out suitability for industrialized production, reduce costs, ensure the quality of products.
Blower fan also can adopt many minor diameter blower fans.
The quantity of the flat pipe tube bank of inside and outside fin can be increased and decreased by required heat exchange area.
The utility model utilizes the direct cooling circulating water of air cooler, then by shower water auxiliary temperature-reducing, heat transfer coefficient is large, and heat exchange efficiency is high, and compact equipment is lightweight, and volume is little, and floor space is little, saves material.The successful of saving water and energy.
Adopt V-arrangement heat exchanger can make full use of the heat-dissipating space in air cooler casing, can increase by 10% heat exchange area compared with vertically disposed heat exchanger.The flat pipe tube bank of inside and outside fin has good heat exchange performance, evenly abundant by the air quantity of the flat pipe of inside and outside fin with mounted angle, can better bring into play its heat exchange performance; But the flat pipe tube bank of inside and outside fin need to be in operation and keep clean, the flat pipe tube bank of vertically arranged inside and outside fin is unfavorable for the clean of water under high pressure.While work under hot climate condition, need to spray water smoke to the tube bank of inside and outside fin flat tube, the flat pipe tube bank of at right angle setting inside and outside fin is unfavorable for giving full play to the effect of spraying heat radiation.
Embodiment bis-:
The present embodiment is to implement one one improvement.
As Fig. 4, Fig. 5, dry, the wet closed cooling tower of a kind of V-type, comprises casing, blower unit, water collection device, the flat pipe tube bank of inside and outside fin, spray equipment, cleaning dolly.
As Fig. 5, the square cooling unit that the present embodiment is 3m by two length of sides forms, and each cooling unit is provided with independently heat exchanger, blower unit, water collection device, spray equipment and cleaning dolly; Two cooling unit linear array connect into dry, the wet closed cooling tower of complete V-type by casing; The heat exchanger of two cooling units is connected by pipeline.
Described casing is rectangle, long 6 meters of casing, and casing is wide 3 meters, and casing is high 4.7 meters.The inner side of casing is provided with the flat pipe tube bank of inside and outside fin.Described heat exchanger forms inverted v-shaped structure by two side heat exchanger plates that are provided with inclination angle, and two side heat exchanger plates connect in upper end.
Have two air-introduced machines to be arranged on the top of casing, every air-introduced machine is corresponding to a cooling unit, and air-introduced machine diameter is 2.4m.Described water collection device is installed below blower unit, and described spray equipment is provided with multiple shower nozzles that spray water smoke to the tube bank of inside and outside fin flat tube, towards a side at casing center, described cleaning dolly is installed in the flat pipe tube bank of inside and outside fin.
Claims (10)
1. dry, the wet closed cooling tower of V-type, comprise casing, be arranged on heat exchanger in casing, be arranged on casing top blower unit, be arranged on water collection device, spray equipment, the cleaning dolly of blower unit below; It is characterized in that, described heat exchanger forms V character form structure by two side heat exchanger plates that are provided with inclination angle; Described side heat exchanger plates is the flat pipe tube bank of inside and outside fin.
2. dry, the wet closed cooling tower of a kind of V-type according to claim 1, it is characterized in that, the flat pipe tube bank of described inside and outside fin comprises the flat pipe of inside and outside fin, the flat pipe of described inside and outside fin is the platypelloid type radiating tube of both ends open, the internal diameter of the flat pipe of inside and outside fin is provided with the inner fin that internal diameter is separated into multiple paths, and the external diameter of the flat pipe of inside and outside fin is provided with many radiating fins.
3. dry, the wet closed cooling tower of a kind of V-type according to claim 1, is characterized in that, described heat exchanger is positive V character form structure, and described two side heat exchanger plates connect in lower end.
4. dry, the wet closed cooling tower of a kind of V-type according to claim 1, is characterized in that, described heat exchanger is inverted v-shaped structure, and described two side heat exchanger plates connect in upper end.
5. dry, the wet closed cooling tower of a kind of V-type according to claim 1, is characterized in that, the angle between described two side heat exchanger plates is 40 ° to 100 °.
6. dry, the wet closed cooling tower of a kind of V-type according to claim 1, is characterized in that, described spray equipment is arranged on the side top of described side heat exchanger plates; Spray equipment is provided with the shower nozzle that sprays water smoke to side heat exchanger plates.
7. dry, the wet closed cooling tower of a kind of V-type according to claim 1, it is characterized in that, above the side of each described side heat exchanger plates, be provided with described cleaning dolly, cleaning dolly is arranged on to clean on guide rail and moves as vertical and horizontal, clean dolly cleaning the complete whole side heat exchanger plates of mobile covering on guide rail, clean dolly and be provided with the single or multiple high-pressure nozzles to side heat exchanger plates by high pressure water jets.
8. dry, the wet closed cooling tower of a kind of V-type according to claim 1, is characterized in that, described blower unit comprises by motor-driven air-introduced machine, and the diameter of described air-introduced machine is 2m～11m; Described motor straight connects in succession or connects air-introduced machine by arrangements for speed regulation; Every air-introduced machine is arranged in an air duct.
9. dry, the wet closed cooling tower of a kind of V-type according to claim 1, is characterized in that, dry, the wet closed cooling tower of described V-type comprises one or more foursquare cooling units; Each cooling unit is provided with independently heat exchanger, blower unit, water collection device, spray equipment and cleaning dolly; Multiple cooling unit linear array connect into dry, the wet closed cooling tower of complete V-type by casing; The heat exchanger of multiple cooling units is connected by pipeline.
10. dry, the wet closed cooling tower of a kind of V-type according to claim 9, is characterized in that, the length of side of described square cooling unit is 3m～12m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420212730.3U CN203810956U (en) | 2014-04-29 | 2014-04-29 | V-shaped dry and wet closed cooling tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420212730.3U CN203810956U (en) | 2014-04-29 | 2014-04-29 | V-shaped dry and wet closed cooling tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203810956U true CN203810956U (en) | 2014-09-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420212730.3U Expired - Lifetime CN203810956U (en) | 2014-04-29 | 2014-04-29 | V-shaped dry and wet closed cooling tower |
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| Country | Link |
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| CN (1) | CN203810956U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114436357A (en) * | 2022-01-19 | 2022-05-06 | 苏州科技大学 | Surface spraying energy recovery type sewage treatment device |
-
2014
- 2014-04-29 CN CN201420212730.3U patent/CN203810956U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114436357A (en) * | 2022-01-19 | 2022-05-06 | 苏州科技大学 | Surface spraying energy recovery type sewage treatment device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140903 |
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| CX01 | Expiry of patent term |