CN103743258A - Water-saving dry closed cooling tower - Google Patents
Water-saving dry closed cooling tower Download PDFInfo
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- CN103743258A CN103743258A CN201410003754.2A CN201410003754A CN103743258A CN 103743258 A CN103743258 A CN 103743258A CN 201410003754 A CN201410003754 A CN 201410003754A CN 103743258 A CN103743258 A CN 103743258A
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Abstract
The invention discloses a water-saving dry closed cooling tower. The water-saving dry closed cooling tower comprises a tower body frame, a coiled heat exchange tube and a dry type heat exchange tube, wherein the tower body frame is provided with a cavity, the coiled heat exchange tube is fixedly inserted in the frame, and the dry type heat exchange tube is fixedly mounted in the cavity of the frame; the dry type heat exchange tube is provided with a cooling medium inlet, an air supply system which is used for supplying air to the dry type heat exchange tube is formed on the frame, a spraying assembly which is used for spraying water to the coiled heat exchange tube and cooling the coiled heat exchange tube is mounted above the coiled heat exchange tube, a water supplying assembly is connected to the spraying assembly, the dry type heat exchange tube is communicated with a cooling medium outlet tube through a first pipeline, the coiled heat exchange tube is communicated with the cooling medium outlet tube through a second pipeline, a first valve is arranged on the first pipeline, a second valve is arranged on the second pipeline, the coiled heat exchange tube and the dry type heat exchange tube are communicated through a third pipeline, and a third valve is arranged on the third pipeline. According to the water-saving dry closed cooling tower, the water-saving dry closed cooling tower can be used in a switchover mode at low-temperature or high-temperature periods of time, so that the evaporation loss of circulating water is reduced, and the normal operation of a production unit is guaranteed effectively.
Description
Technical field
The invention belongs to cooling device technical field, be specifically related to the dry closed cooling tower of a kind of water saving.
Background technology
Because the recirculated cooling water in cooling tower directly contacts with air, cause cooling water easily by airborne contaminating impurity, when using cooling tower in the large environment of the dust such as dust storm area, chemical plant, smeltery, cooling water contaminated rear operational efficiency and service life that directly has influence on cooling tower unit.Therefore in this type of area, water cooling equipment is widely used closed cooling tower.
In existing closed cooling tower, one of heat exchange method of water and air is, the air that flows through water surface directly contacts with water, by transmission of heat by contact and evaporative heat loss, heat in recirculated water is transferred to air, recirculated water is by the heat of cooling medium in sensible heat heat exchange pattern absorption coil, and heat is discharged in atmosphere by tower top.
Adopt the heat exchanger effectiveness of wet type heat-exchange system enclosed tower high, but recirculated water causes damage because of evaporation, evaporation loss speed and the temperature difference of the water yield are proportional, the larger water loss speed of the temperature difference is larger, wind also can cause the loss of water, and its exothermic temperature is higher, thereby causes evaporation capacity larger.So current wet type heat-exchange system enclosed tower is subject to being adapted to the area that water source is comparatively sufficient, can not ensure the normal operation of producing unit in the area of insufficient water sources.
Summary of the invention
For the deficiencies in the prior art, object of the present invention is intended to provide a kind of water saving dry closed cooling tower, reduces significantly the evaporation loss of recirculated water, has greatly improved the adaptability of cooling tower, effectively ensures the normal operation of producing unit.
For achieving the above object, the present invention adopts following technical scheme:
The dry closed cooling tower of a kind of water saving, comprise the tower body framework with cavity, fixedly be interspersed in the disc type heat exchanger tube in framework, be fixedly installed in the dry type heat exchanger tube in framework cavity, described dry type heat exchanger tube is provided with cooling medium entrance, on described framework, be formed with for the supply air system to the air-supply of dry type heat exchanger tube, the top of described disc type heat exchanger tube is provided with for the spray assembly to disc type heat exchanger tube spray cooling, on described spray assembly, be connected with for water assembly, described dry type heat exchanger tube is connected with cooling medium outlet by the first pipeline, disc type heat exchanger tube is connected with cooling medium outlet by the second pipeline, described the first pipeline is provided with the first valve, described the second pipeline is provided with the second valve, described disc type heat exchanger tube is connected by the 3rd pipeline with dry type heat exchanger tube, described the 3rd pipeline is provided with the 3rd valve.
Preferably, the upper end of described framework is upwards formed with ventilating duct, described ventilating duct upper end open, described supply air system comprise be opened in frame facet and toward the air inlet of dry type heat exchanger tube, be fixedly installed in the blower fan in ventilating duct cavity, be fixedly installed on framework for driving the motor of blower fan rotation.
Preferably, described for water assembly comprise be positioned at base of frame collecting-tank, for is connected with extraneous water source and for give collecting-tank replenishment cycles water water replanishing device, with spray the circulating water pipe that assembly is connected, the water pump being connected with circulating water pipe, described water pump is connected with collecting-tank by the 4th pipeline.
Preferably, described spray assembly comprises water collection device, spray piping and the packing that is fixedly installed in successively from top to bottom framework both sides inwall, and the lower end of described spray piping is provided with shower nozzle.
Preferably, described dry type heat exchanger tube is rib heat exchanging pipe, and it is comprised of some metal tubes, and described metal tube is to tilt or vertically places, and is provided with radiating fin.
Preferably, the below of described the second pipeline is connected with blow-off pipe, and described blow-off pipe is provided with the first blowoff valve, and described the first blowdown valve is positioned at the place ahead of the second valve.
Preferably, the lower end of described rib heat exchanging pipe is communicated with current divider, and described current divider one side is communicated with cooling medium entrance, and opposite side is communicated with the first blowoff valve by the 5th pipeline, and described the 5th pipeline is provided with the second blowoff valve.
Preferably, the outer cup of described framework is provided with shell, and the external stability of described framework is provided with maintenance ladder.
Preferably, the material of described framework is steel or mixed earth.
Beneficial effect of the present invention is:
The present invention by having additional dry type heat-exchanging component and disc type heat exchanger tube on framework, dry type heat-exchanging component is all connected with outlet with disc type heat exchanger tube, dry type heat-exchanging component is connected by the 3rd pipeline with disc type heat exchanger tube, integrates the advantage of dry type heat exchange and closed heat exchange.When low temperature season, the dry type that can be used alone heat exchange mode, when high temperature, when the dry district of cooling tower and enclosed district move simultaneously, High-temperature cooling medium to be cooled is first done district by cooling tower and is carried out cooling, then cooling by enclosed district again, can switch and use in the period of low temperature or high temperature, greatly improve the adaptability of cooling tower, reduced significantly the evaporation loss of recirculated water, effectively ensured the normal operation of producing unit.When the dry district of cooling tower and enclosed district move simultaneously, cooling medium has been lowered the temperature during by dry district, temperature approximately declines 3 ℃, so the evaporation rate at enclosed district recirculated water slows down, this has just reduced the warm air amount of discharging, and it is poor that the water temperature that significantly reduces enclosed area is fallen, reduced the evaporation loss of recirculated water, reach good water-saving result, as poor in total temperature drop is the cooling system of 10 ℃, approximately can reduce by 30% evaporation loss.Meanwhile, dry type heat exchanger tube is rib heat exchanging pipe, its by some successively end to end metal tube form, metal tube is to tilt or vertically places, and being provided with radiating fin, this design can, when guaranteeing the effect of cooling medium heat radiation, be convenient to change, safeguard and overhaul; In addition, blow-off pipe switches way of supplying water and when out of service, for the cooling medium in emptying pipe, prevents that cooling medium from freezing to swarm in pipeline at cooling tower.
Accompanying drawing explanation
Fig. 1 is the structural representation of first embodiment of the invention;
Fig. 2 is the structural representation of second embodiment of the invention.
Wherein, 1, ventilating duct; 2, blower fan; 3, motor; 4, framework; 5, water collection device; 6, spray piping; 7, shower nozzle; 8, packing; 9, cooling medium entrance; 10, circulating water pipe; 11, water pump; 12, the 4th pipeline; 13, collecting-tank; 14, current divider; 15, the second blowoff valve; 16, water replanishing device; 17, the 5th pipeline; 18, blow-off pipe; 19, rib heat exchanging pipe; 20, the first blowoff valve; 21, air inlet; 22, the first pipeline; 23, the first valve; 24, cooling medium outlet; 25, the 3rd valve; 26, the 3rd pipeline; 27, maintenance ladder; 28, shell; 29, disc type heat exchanger tube; 30, the second pipeline; 31, the second valve.
The specific embodiment
Below, by reference to the accompanying drawings and the specific embodiment, the present invention is described further:
As shown in Figure 1, structural representation for first embodiment of the invention, for the dry closed cooling tower of a kind of water saving, comprise the tower body framework 4 with cavity, fixedly be interspersed in the disc type heat exchanger tube 29 on framework 4, be fixedly installed in the dry type heat exchanger tube in framework 4 cavitys, described dry type heat exchanger tube is provided with cooling medium entrance 9, described framework 4 is formed with for the supply air system to the air-supply of dry type heat exchanger tube, the top of described disc type heat exchanger tube 29 is provided with for the spray assembly to disc type heat exchanger tube 29 spray coolings, on described spray assembly, be connected with for water assembly, described dry type heat exchanger tube and disc type heat exchanger tube 29 with by the first pipeline 22 and the second pipeline 30, be connected with cooling medium outlet 24 respectively, cooling medium outlet 24 is connected with unit, described the first pipeline 22 is provided with the first valve 23, described the second pipeline 30 is provided with the second valve 31, described disc type heat exchanger tube 29 is connected by the 3rd pipeline 26 with dry type heat exchanger tube, described the 3rd pipeline 26 is provided with the 3rd valve 25.Described dry type heat exchanger tube can be flowed through for cooling fluid, and described disc type heat exchanger tube 29 can be for cooling fluid circulation.
Preferably, the upper end of described framework 4 is upwards formed with ventilating duct 1, described ventilating duct 1 upper end open, described supply air system comprise be opened in framework 4 sides and toward the air inlet 21 of dry type heat exchanger tube, be fixedly installed in the blower fan 2 in ventilating duct 1 cavity, be fixedly installed on framework 4 for driving the motor 3 of blower fan 2 rotations.At framework 4, towards the direction of dry type heat exchanger tube, be formed with air inlet 21, under the effect of air inlet 21 and supply air system, can be dry type heat exchange mode dry and cold wind is provided, the medium to be cooled of cooling down high-temperature.
Preferably, described for water assembly comprise be positioned at framework 4 bottoms collecting-tank 13, for is connected with extraneous water source and for give collecting-tank 13 replenishment cycles water water replanishing device 16, with spray the circulating water pipe 10 that assembly is connected, the water pump 11 being connected with circulating water pipe 10, described water pump 11 passes through the 4th pipeline 12 and is connected with collecting-tank 13.When enclosed heat exchange, recirculated water will constantly incur loss, and need carry out by 16 pairs of collecting-tanks of water replanishing device 13 complement operation of recirculated water, guarantee the abundance of recirculated water.
Preferably, described spray assembly comprises water collection device 5, spray piping 6 and the packing 8 that is fixedly installed in successively from top to bottom framework 4 both sides inwalls, and the lower end of described spray piping 6 is provided with shower nozzle 7.
Preferably, described dry type heat exchanger tube is rib heat exchanging pipe 19, and it is comprised of some metal tubes, and described metal tube is slant setting, and is provided with radiating fin.
Preferably, the below of described the second pipeline 30 is connected with blow-off pipe 18, and described blow-off pipe 18 is provided with the first blowoff valve 20, and described the first blowoff valve 20 is positioned at the place ahead of the second valve 31.
Preferably, the lower end of described rib heat exchanging pipe 19 is communicated with current divider 14, and described current divider 14 1 sides are communicated with cooling medium entrance 9, and opposite side is communicated with blow-off pipe 18 by the 5th pipeline 17, and described the 5th pipeline 17 is provided with the second blowoff valve 15.
Preferably, the outer cup of described framework 4 is provided with shell 28, and the external stability of described framework 4 is provided with maintenance ladder 27.Shell 28 can play preventing gas flow short-circuit, reduces noise, and protection flies the effect of cooling device in water and protection tower, and maintenance ladder 27 can facilitate the maintenance of equipment.
Preferably, the material of described framework 4 is mixed earth.
As shown in Figure 2, be the structural representation of second embodiment of the invention, the difference of itself and the first embodiment is: the material of embodiment mono-framework 4 is mixed earth, and the material of embodiment bis-frameworks 4 is steel, can significantly strengthen the steadiness of framework 4; The motor 3 of embodiment mono-is the lateral walls that are fixedly installed in ventilating duct 1, and the motor 3 of embodiment bis-is to be fixedly installed in the cavity of ventilating duct 1, can effectively save space; The rib heat exchanging pipe 19 of embodiment mono-is comprised of the metal tube of some inclination mounting strap radiating fins, the rib heat exchanging pipe 19 of embodiment bis-is comprised of the metal tube of some vertical mounting strap radiating fins, this design can, when meeting aerodynamics requirement, be convenient to change, safeguard and overhaul; The maintenance ladder 27 of embodiment mono-be shaped as zigzag, the maintenance ladder 27 of embodiment bis-be shaped as H font, mixed earth framework 4 is for large cooling column, steel structure frame 4 is for relatively small-sized cooling tower, because tower body is huge, the maintenance ladder 27 inapplicable H fonts of mixed earth framework 4, therefore select Z-shaped maintenance ladder.Embodiment mono-can be used in combination mutually with the above-mentioned distinguishing characteristics of embodiment bis-.
The present invention when low temperature season, the dry type that can be used alone heat exchange mode.The specific embodiment is: at low temperature season, close the second valve 31 and the 3rd valve 25, open the first valve 23, motor 3 drives blower fan 2 to rotate, and continues to suck new air.The high temperature medium to be cooled flowing out from heat exchange unit is entered in current divider 14 by cooling medium entrance 9, current divider 14 is diverted in rib heat exchanging pipe 19 each finned tubes high temperature homogeneous media to be cooled, extraneous fresh air is entered in tower by air inlet 21, the new horizontal cross-current of air enters in tower through rib heat exchanging pipe 19, last air is extracted out by blower fan 2, cold dry air makes cooling medium cooling, enters cooling medium outlet 24 be back to heat exchange in unit through the cooled cooling medium of rib heat exchanging pipe 19.
When the isolated operation of Dang Gan district can not meet unit operation requirement, close the first valve 23, open the second valve 31 and the 3rd valve 25, motor 3 drives blower fan 2 high speed rotating that air in tower is discharged from ventilating duct 1, form negative pressure in tower, extraneous cold dry air is continuously drawn into and in tower, carries out heat exchange.The high temperature medium to be cooled flowing out from heat exchange unit is entered in current divider 14 by cooling medium entrance 9, current divider 14 is diverted in rib heat exchanging pipe 19 high temperature homogeneous media to be cooled, the horizontal cross-current of cold dry air entering in tower from air inlet 21 enters in tower and is extracted out by blower fan 2 through rib heat exchanging pipe 19, cold dry air makes cooling medium precooling cooling, through the cooled cooling medium of rib heat exchanging pipe 19, through the 3rd pipeline 26, enter in disc type heat exchanger tube 29, cooling medium spirals mobile from top to bottom in disc type heat exchanger tube 29, finally from cooling medium outlet 24, flow back into heat exchange in unit.Meanwhile, the circulating water pipe 10 of flowing through under the effect of water pump 11 of the recirculated water in collecting-tank 13, enters in spray piping 6.Shower nozzle 7 in spray piping 6 is sprayed at recirculated water on packing 8 uniformly, and on packing 8 surfaces, forms the moisture film of continuous uniform.Cold air from bottom to top with the moisture film reverse flow on packing 8 surfaces, in aqueous vapor contact process, carry out heat exchange, reduce recirculated water water temperature, cooled recirculated water evenly drops onto on disc type heat exchanger tube 29, on disc type heat exchanger tube 29, form continuous moisture film, at this recirculated water and air, again carry out heat exchange, recirculated water is lowered the temperature again, the damp-heat air after heat absorption is flowed through after water collection device 5 filters and is discharged by tower top ventilating duct 1.Meanwhile, at the mobile cooling medium of disc type heat exchanger tube 29 inside turns, by tube wall, heat is passed to recirculated water, make cooling medium secondary cooling, cooled medium flow back into heat exchange work unit from cooling medium outlet 24, so cycle heat exchange.
Blow-off pipe 18 of the present invention switches way of supplying water and when out of service, for the cooling medium in emptying pipe, prevents that cooling medium from freezing to swarm in pipeline at cooling tower.
Water replanishing device 16 of the present invention, packing 8 and water collection device 5 are prior art.Packing 8 is arranged in cooling tower, and making has abundant contact between water and air, has the packing material of heat, matter shift surface, and the packing 8 of the present embodiment can adopt PVC modified plastic sheet to make.
When the dry district of cooling tower and enclosed district move simultaneously, high temperature medium to be cooled has been lowered the temperature during by dry district, temperature is fallen about 3 ℃, so the evaporation rate at enclosed district recirculated water slows down, this has just reduced the warm air amount of discharging, and it is poor that the water temperature that significantly reduces wet district is fallen, reduced the evaporation loss of recirculated water, reach good water-saving result, as poor in total temperature drop is the cooling system of 10 ℃, approximately can reduce by 30% evaporation loss.
For a person skilled in the art, can make other various corresponding changes and distortion according to technical scheme described above and design, and these all changes and distortion all should belong to the protection domain of the claims in the present invention within.
Claims (9)
- One kind water saving dry closed cooling tower, it is characterized in that: comprise the tower body framework with cavity, fixedly be interspersed in the disc type heat exchanger tube in framework, be fixedly installed in the dry type heat exchanger tube in framework cavity, described dry type heat exchanger tube is provided with cooling medium entrance, on described framework, be formed with for the supply air system to the air-supply of dry type heat exchanger tube, the top of described disc type heat exchanger tube is provided with for the spray assembly to disc type heat exchanger tube spray cooling, on described spray assembly, be connected with for water assembly, described dry type heat exchanger tube is connected with cooling medium outlet by the first pipeline, disc type heat exchanger tube is connected with cooling medium outlet by the second pipeline, described the first pipeline is provided with the first valve, described the second pipeline is provided with the second valve, described disc type heat exchanger tube is connected by the 3rd pipeline with dry type heat exchanger tube, described the 3rd pipeline is provided with the 3rd valve.
- 2. the dry closed cooling tower of water saving as claimed in claim 1, it is characterized in that: the upper end of described framework is upwards formed with ventilating duct, described ventilating duct upper end open, described supply air system comprise be opened in frame facet and toward the air inlet of dry type heat exchanger tube, be fixedly installed in the blower fan in ventilating duct cavity, be fixedly installed on framework for driving the motor of blower fan rotation.
- 3. the dry closed cooling tower of water saving as claimed in claim 1, it is characterized in that: described for water assembly comprise be positioned at base of frame collecting-tank, for is connected with extraneous water source and for give collecting-tank replenishment cycles water water replanishing device, with spray the circulating water pipe that assembly is connected, the water pump being connected with circulating water pipe, described water pump is connected with collecting-tank by the 4th pipeline.
- 4. the dry closed cooling tower of water saving as claimed in claim 3, is characterized in that: described spray assembly comprises water collection device, spray piping and the packing that is fixedly installed in successively from top to bottom framework both sides inwall, and the lower end of described spray piping is provided with shower nozzle.
- 5. the dry closed cooling tower of water saving as claimed in claim 1, is characterized in that: described dry type heat exchanger tube is rib heat exchanging pipe, and it is comprised of some metal tubes, and described metal tube is to tilt or vertically places, and is provided with radiating fin.
- 6. the dry closed cooling tower of water saving as claimed in claim 1, is characterized in that: the below of described the second pipeline is connected with blow-off pipe, and described blow-off pipe is provided with the first blowoff valve, and described the first blowdown valve is positioned at the place ahead of the second valve.
- 7. the dry closed cooling tower of water saving as claimed in claim 6, it is characterized in that: the lower end of described rib heat exchanging pipe is communicated with current divider, described current divider one side is communicated with cooling medium entrance, and opposite side is communicated with the first blowoff valve by the 5th pipeline, and described the 5th pipeline is provided with the second blowoff valve.
- 8. the dry closed cooling tower of water saving as described in claim 1-7 any one, is characterized in that: the outer cup of described framework is provided with shell, and the external stability of described framework is provided with maintenance ladder.
- 9. the dry closed cooling tower of water saving as described in claim 1-7 any one, is characterized in that: the material of described framework is steel or mixed earth.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410003754.2A CN103743258B (en) | 2014-01-01 | 2014-01-01 | The dry closed cooling tower of a kind of water saving |
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| CN201410003754.2A CN103743258B (en) | 2014-01-01 | 2014-01-01 | The dry closed cooling tower of a kind of water saving |
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| CN103743258A true CN103743258A (en) | 2014-04-23 |
| CN103743258B CN103743258B (en) | 2016-05-18 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104296555A (en) * | 2014-09-24 | 2015-01-21 | 天津天宗化工设备有限公司 | Plate type water-saving air cooler |
| CN105588455A (en) * | 2016-03-14 | 2016-05-18 | 广州览讯科技开发有限公司 | Subdivision water-saving and fog-dissipating closed cooling tower |
| CN110118494A (en) * | 2019-06-13 | 2019-08-13 | 杭州蕴泽环境科技有限公司 | A kind of water-saving suitching type cooling tower |
| CN110398159A (en) * | 2019-06-27 | 2019-11-01 | 江苏赐福科技有限公司 | A kind of magnetic suspension evaporation cooling type cold water unit |
| CN110411043A (en) * | 2019-06-27 | 2019-11-05 | 江苏赐福科技有限公司 | A kind of magnetic suspension evaporative condenser all-in-one machine |
| CN110850946A (en) * | 2019-11-26 | 2020-02-28 | 武桂英 | Safe and reliable's software test equipment of heat dissipation of being convenient for cool down |
| RU2743442C1 (en) * | 2020-07-24 | 2021-02-18 | Открытое акционерное общество "Всероссийский дважды ордена Трудового Красного Знамени теплотехнический научно-исследовательский институт" (ОАО "ВТИ") | Floating unit for circulating water cooling |
| CN112700937A (en) * | 2019-10-22 | 2021-04-23 | 湖北中盛电气有限公司 | SYQT intelligent dynamic liquid resistance speed regulator heat dissipation device and using method thereof |
| CN112725645A (en) * | 2020-12-22 | 2021-04-30 | 大冶市兴进铝业有限公司 | Novel aluminium alloy preparation device |
| WO2021169837A1 (en) * | 2020-02-28 | 2021-09-02 | 西安交通大学 | Phase-change cooling system and working method therefor |
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| RU2734834C1 (en) * | 2019-12-30 | 2020-10-23 | Владимир Владимирович Рогожкин | Cooler for climate control |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104296555A (en) * | 2014-09-24 | 2015-01-21 | 天津天宗化工设备有限公司 | Plate type water-saving air cooler |
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| CN110118494A (en) * | 2019-06-13 | 2019-08-13 | 杭州蕴泽环境科技有限公司 | A kind of water-saving suitching type cooling tower |
| CN110398159A (en) * | 2019-06-27 | 2019-11-01 | 江苏赐福科技有限公司 | A kind of magnetic suspension evaporation cooling type cold water unit |
| CN110411043A (en) * | 2019-06-27 | 2019-11-05 | 江苏赐福科技有限公司 | A kind of magnetic suspension evaporative condenser all-in-one machine |
| CN112700937A (en) * | 2019-10-22 | 2021-04-23 | 湖北中盛电气有限公司 | SYQT intelligent dynamic liquid resistance speed regulator heat dissipation device and using method thereof |
| CN112700937B (en) * | 2019-10-22 | 2022-05-13 | 湖北中盛电气有限公司 | SYQT intelligent dynamic liquid resistance speed regulator heat dissipation device and using method thereof |
| CN110850946A (en) * | 2019-11-26 | 2020-02-28 | 武桂英 | Safe and reliable's software test equipment of heat dissipation of being convenient for cool down |
| CN110850946B (en) * | 2019-11-26 | 2021-09-14 | 韦晓枫 | Safe and reliable's software test equipment of heat dissipation of being convenient for cool down |
| WO2021169837A1 (en) * | 2020-02-28 | 2021-09-02 | 西安交通大学 | Phase-change cooling system and working method therefor |
| RU2743442C1 (en) * | 2020-07-24 | 2021-02-18 | Открытое акционерное общество "Всероссийский дважды ордена Трудового Красного Знамени теплотехнический научно-исследовательский институт" (ОАО "ВТИ") | Floating unit for circulating water cooling |
| CN112725645A (en) * | 2020-12-22 | 2021-04-30 | 大冶市兴进铝业有限公司 | Novel aluminium alloy preparation device |
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Effective date of registration: 20190214 Address after: 526000 Spinning Workshop of Zhaoqing Yongwang Textile Co., Ltd. Shali Industrial Park, Zhaoqing High-tech Zone, Zhaoqing City, Guangdong Province Patentee after: Guangdong Langxun Technology Development Co., Ltd. Address before: 510450 No. 8 Xinguanghua Road, Shuanggang Village, Jianggao Town, Baiyun District, Guangzhou City, Guangdong Province Patentee before: He Songjun |
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