CN101819857B - Cooling system for power transformer - Google Patents
Cooling system for power transformer Download PDFInfo
- Publication number
- CN101819857B CN101819857B CN2010101411686A CN201010141168A CN101819857B CN 101819857 B CN101819857 B CN 101819857B CN 2010101411686 A CN2010101411686 A CN 2010101411686A CN 201010141168 A CN201010141168 A CN 201010141168A CN 101819857 B CN101819857 B CN 101819857B
- Authority
- CN
- China
- Prior art keywords
- heat exchanger
- water
- cooling system
- cooling
- waterworks
- 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.)
- Active
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 93
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 73
- 238000007789 sealing Methods 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 5
- 239000012535 impurity Substances 0.000 abstract description 5
- 239000007787 solid Substances 0.000 abstract description 5
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 239000000498 cooling water Substances 0.000 description 32
- 239000000945 filler Substances 0.000 description 11
- 238000005086 pumping Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000002826 coolant Substances 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 125000004122 cyclic group Chemical group 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 210000000481 breast Anatomy 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Landscapes
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention discloses a cooling system for a power transformer, which comprises a water supply device, a heat exchanger, a cooling tower, a water-softening device, a buffer device, a distributive pipe and a short-circuit board, wherein the water supply device is positioned at the bottom of a system; the outer parts of the heat exchanger, the cooling tower and the water supply device are fixedly connected in sequence from the top down and the inner parts of the three are communicated with one another; the water supply device and the water-softening device are communicated by the distributive pipe; the buffer device is arranged on the top of the system and comprises a buffer water tank; a water inlet of the buffer water tank is formed on the top of the buffer water tank and communicated with the water supply device by the distributive pipe; and the buffer water tank is fixedly connected with the outer part of the heat exchanger through a plurality of connecting elements and communicated with the inner part of the heat exchanger. The cooling system for the power transformer has the advantages that: the buffer device is introduced on the basis of the traditional cooler, so the cooling efficiency of the cooling system is improved and the service life of the system is prolonged; and the cooling system is provided with a filter and the solid impurities are all filtered out, so the damages to equipment are avoided and the cost is saved.
Description
Technical field
The present invention relates to a kind of cooling system that is used for power transformer.
Background technology
The cooler of the power transformer of prior art is through taking away the heat of the medium that is cooled in the pipe to the heat exchanger tube spraying cooling water, and hot water recycles after the cooling tower cooling.Like " a kind of indirect evaporation type cooling/condensing device " (2008.8 Chinese patent grant number such as Li Xianting: CN 201104060Y); This device passes through water pump, nozzle to filler, dividing wall type heat exchanger spraying cooling water; Simultaneously under the effect of blower fan; The gap of cold air flow between filler, dividing wall type heat exchanger makes the medium cooling that is cooled in the dividing wall type heat exchanger under the synergy of cooling water and cold air.
Above-mentioned cooler uses the interior medium that is cooled of water quench pipe of spray, and cooling water contacts insufficient with tube wall on the one hand; Cooling water relies on flow by gravity on the other hand, and flow is little, thereby cooling effect is restricted.
Summary of the invention
The purpose of this invention is to provide a kind of cooling system that heat exchanger, cooling tower and cooling water softening treatment plant etc. are integrated,, be specially adapted to the cooling of large-capacity power transformer through the pressure boiler water circulation of the medium that is cooled, coolant.
To achieve these goals, the present invention provides a kind of cooling system that is used for power transformer, comprises waterworks, heat exchanger, cooling tower, water-softening plant, distributive pipe and short circuit plate; Waterworks are positioned at the system bottom; The outside of heat exchanger, cooling tower and waterworks from top to bottom is fixedly connected through some Connection Elements successively, and the inside of heat exchanger, cooling tower and waterworks connects each other; Water-softening plant connects with waterworks through the short circuit plate and is connected; Distributive pipe connects waterworks and is connected with water-softening plant;
Be characterized in that this cooling system that is used for power transformer also comprises buffer unit;
Above-mentioned buffer unit is arranged on the system top, and it comprises buffer tank;
Described buffer tank top is provided with the buffer tank water inlet;
Described buffer tank water inlet connects with waterworks through distributive pipe and is connected;
Described buffer tank is fixedly connected through some Connection Elements with the outside of heat exchanger, and inside connects each other.
The above-mentioned cooling system that is used for power transformer, wherein, the top of buffer tank also is provided with the automatic exhaust steam valve that is used for the discharge of the gas in the buffer tank.
The above-mentioned cooling system that is used for power transformer, wherein, cooling system also comprises filter;
Described filter connects through distributive pipe with the buffer tank water inlet of the buffer unit at waterworks and system top respectively and is connected.
The blowdown pipe that described filter comprises filter body, draw from filter body and be arranged on the blowdown valve on the blowdown pipe.
The above-mentioned cooling system that is used for power transformer, wherein, cooling system also comprises the branch water plate that is arranged between buffer tank and the heat exchanger;
Described buffer tank, branch water plate are fixedly connected through some Connection Elements by extremely following on the outside with heat exchanger successively, and inside connects each other.
The above-mentioned cooling system that is used for power transformer, wherein, cooling system also comprises the trickle orifice plate that is arranged between heat exchanger and the cooling tower;
The outside of described trickle orifice plate, heat exchanger and waterworks from top to bottom is fixedly connected through some Connection Elements successively, and inside connects each other.
The above-mentioned cooling system that is used for power transformer, wherein, the connecting portion that divides water plate, buffer tank and heat exchanger is through the potted component sealing.
The above-mentioned cooling system that is used for power transformer, wherein, the connecting portion of trickle orifice plate, heat exchanger and waterworks is through the potted component sealing.
The above-mentioned cooling system that is used for power transformer, wherein, cooling system also comprises the base that is used to support whole system weight;
Described waterworks and water-softening plant are placed on the base.
The present invention compared with prior art, its advantage is: the present invention has introduced buffer unit on the basis of original cooler, has improved the cooling effectiveness of cooling system, has prolonged the useful life of system; The present invention is owing to be provided with filter, and solid impurity all is filtered, and has avoided the damage of equipment, provides cost savings, and has produced favorable economic benefit.
Description of drawings
Fig. 1 is a kind of structural representation that is used for the cooling system of power transformer provided by the invention.
Embodiment
Below in conjunction with Fig. 1, specify the preferred embodiment of the invention.
As shown in Figure 1, Fig. 1 is a kind of structural representation that is used for the cooling system of power transformer provided by the invention.
A kind of cooling system that is used for power transformer; Comprise waterworks 10, heat exchanger 20, cooling tower 30, water-softening plant 40, buffer unit 50, distributive pipe 60, short circuit plate 70, filter 80, divide water plate 90, trickle orifice plate 100, potted component 110 (present embodiment is selected rubber washer for use), some Connection Elements 120 (present embodiment is selected bolt, nut and screw for use) and be used to support the base 130 of whole system weight, waterworks 10 and water-softening plant 40 are installed on the base 130.
Waterworks 10 are positioned at the system bottom, comprise water tank 101, water pump 102.Water outlet of water tank 1011 is connected with buffer tank 50 through pump water inlet 1021, water pump 102, pumping line 1022, filter 80.Water tank inlet 1012 connects with water-softening plant 40 through short circuit plate 70 and is connected.
Heat exchanger 20 comprises heat exchanger casing 201, and the bosom of heat exchanger casing 201 is provided with heat exchanger tube 202, and the two ends of heat exchanger casing 201 are respectively that heat exchanger goes out head piece 203 and heat exchanger is gone into head piece 204.Going out head piece 203 and heat exchanger at heat exchanger goes into head piece 204 places and heat exchanger is installed respectively head piece current collector 205 and go into head piece current collector 206 with heat exchanger.Adopt the weldering complex method that expands to be connected between heat exchanger tube 202 and the heat exchanger casing 201, heat exchanger goes out head piece current collector 205 and heat exchanger and goes into that employing screw 120 is connected between head piece current collector 206 and the heat exchanger casing 201.
Cooling tower 30 comprises cooling tower tower body 301, filler body 302, in order to support the last filler body support frame 303 and the following filler body support frame 304 of filler body 302.Cooling tower 30 both sides are respectively cooling tower air inlet 305 and cooling tower discharge pipe 306.Be provided with flow deflector 3061 in the cooling tower discharge pipe 306.Heat exchanger casing 201 bottoms link together through connecting bolt 120 and trickle orifice plate 100, cooling tower tower body 301, seal at installation rubber washer 110 between heat exchanger casing 201 and the trickle orifice plate 100 and between cooling tower tower body 301 and the trickle orifice plate 100.Also be connected with an axial flow blower 307 in cooling tower discharge pipe 306 outsides, this axial flow blower 307 comprises axial-flow fan blade 3071, axial flow blower body 3072, Axial-flow fan motor 3073 and Axial-flow fan motor support 3074.Cooling tower tower body 301 welds together with cooling tower air inlet 305, and links to each other with axial flow blower 307 through cooling tower discharge pipe 306, and cooling tower tower body 301 bottoms and water tank 101 usefulness bolts 120 link together.
Water-softening plant 40 comprises softening water tank 401, and softening water tank import 4011 links to each other with pumping line 1022 through distributive pipe 60, and softening water tank outlet 4012 connects with water tank inlet 1012 through short circuit plate 70 and is connected.Water tank 101, water pump 102, softening water tank 401 are installed on the base.
Buffer unit 50 is arranged on the system top; It comprises buffer tank 501; Buffer tank 501 tops are provided with buffer tank water inlet 5011 and automatic exhaust steam valve 5012; The buffer tank water inlet 5011 of buffer unit 50 links to each other with pumping line 1022, and the below links together buffer tank 501, branch water plate 90, heat exchanger 20 through connecting bolt 120, and placement rubber washer 110 seals between buffer tank 501 and branch water plate 90 and between branch water plate 90 and the heat exchanger 20.
Distributive pipe 60 is pipelines that whole system is connected, and also is provided with shunt valve 601 on it, the flowing velocity of coolant in this shunt valve control distributive pipe 60.
Filter 80 connects through distributive pipe 60 with the buffer tank water inlet 5011 of the buffer unit 50 at waterworks 10 and system top respectively and is connected.The blowdown pipe 802 that filter 80 comprises filter body 801, draw from filter body 801 and be arranged on the blowdown valve 803 on the blowdown pipe 802.
Embodiment of the present invention are that waterworks 10, heat exchanger 20, cooling tower 30 and water-softening plant 40 are integrated, and increase buffer tank 50 and filter 80.Coolant (like cooling water) circulates through buffer tank 50, heat exchanger 20, cooling tower 30, water tank 101 through water pump 102; The medium that is cooled in cyclic process in the cooling heat transferring pipe 202; Simultaneously under the swabbing action of axial flow blower 307; Air flows through from the gap of filler body 302 through cooling tower air inlet 305, takes away the heat of cooling water, and cooling water temperature is reduced.The part cooling water gets into through distributive pipe 60 and returns water tank 50 after softening processing unit 40 softens processing, keeps the water quality of cooling water, avoids heat exchanger tube 202 outside foulings.Filter 80 prevents to get into buffer tank 50 and heat exchanger 20 from the solid impurity that cooling tower air inlet 305 gets into.
Two of cooling water circulation branch road scopes of the present invention: major cycle branch road and softening cycle of treatment branch road.
The major cycle branch road is: cooling water circulates through pump water inlet 1021, water pump 102, pumping line 1022, filter 80, buffer tank 501, heat exchanger 20, cooling tower 30; The cooling water of heat exchanger 20 of flowing through in the cyclic process is taken away the heat of the medium that is cooled in the heat exchanger tube 202, makes the medium cooling that is cooled.The hot water that heat exchanger 20 flows out is out-of-date from filler body 302 surface currents in the cooling tower 30, is passed through cooling tower air inlet 305, cooling tower 30, cooling tower discharge pipe 306 and axial flow blower 307 flow air and cools off the back reflow tank.
Softening cycle of treatment branch road is: cooling water gets into softening water tank 401 through pump water inlet 1021, water pump 102, pumping line 1022, filter 80, shunt valve 601, distributive pipe 60, the softening processing after short circuit plate 70 reflow tanks 101.
The concrete method of work of cooling system provided by the invention when cooling is following:
1. with external pipe the oil pump outlet of transformer is gone into head piece 204 with heat exchanger and be connected, the oil return opening of transformer goes out head piece 203 with heat exchanger and is connected, and transformer oil circulates between transformer, heat exchanger 20;
2. in water tank 101, fill it up with softened water as cooling water;
3. open water pump 102 and axial flow blower 307;
4. cooling water gets into buffer tank 501 through pump water inlet 1021, water pump 102, pumping line 1022, filter 80, and the air in the buffer tank 501 is discharged through automatic exhaust steam valve 5012;
5. the cooling water in the buffer tank 501 is through dividing the bar hole inflow heat exchanger 20 on the water plate 90; In start-up phase; Cooling water is discontented in the water tank 101, so cooling water is to rely on deadweight in heat exchanger 20, to flow, so flow velocity is less; Buffer tank 501 water levels increase gradually, in buffer tank 501, are full of cooling water;
6. cooling water flows through from the gap of heat exchanger tube 202 in the heat exchanger 20, and the transformer oil in the external pipe conducts heat to cooling water through tube wall.In heat exchanger casing 201 during the underfill cooling water; Cooling water relies on deadweight to flow into cooling tower 30 through trickle orifice plate 100; Flow is less than the flow through branch water plate 90 inflow heat exchangers 20, and water levels increase gradually in the heat exchanger 20, in heat exchanger 20, are full of cooling water;
7. after being full of cooling water in buffer tank 501, the heat exchanger 20, system gets into normal operating phase;
8. when normally moving, cooling water flows through outside heat exchanger tube 202 under the pressure effect of water pump 102 fast, takes away the heat of transformer oil, and through spraying on the filler body 302 of the trickle hole on the trickle orifice plate 100 in the cooling tower 30, flows into water tank 101 then;
9. air flows through gap, cooling tower discharge pipe 306, the axial flow blower 307 of cooling tower air inlet 305, filler body 302, and cooling water is cooled off.3061 guide functions of flow deflector in the cooling tower discharge pipe 306 make the air PARALLEL FLOW in the gap of the filler body 302 of flowing through, and play each cooling tower air inlet 305 intake of distribution;
10. a part of cooling water gets into softening water tank 401 through shunt valve 601, distributive pipe 60; 401 pairs of cooling waters of softening water tank soften to be handled after short circuit plate 70 flows into water tank 101; Keep cooling water quality, prevent to reduce heat-transfer effect because of heat exchanger tube 202 outer wall foulings;
11. regularly open the blowdown valve 803 of filter 80, from blowdown pipe 802, discharge the solid impurity that gets into from cooling tower air inlet 13.
The present invention compared with prior art, its advantage is: the present invention has introduced buffer unit on the basis of original cooler, has improved the cooling effectiveness of cooling system, has prolonged the useful life of system; The present invention is owing to be provided with filter, and solid impurity all is filtered, and has avoided the damage of equipment, provides cost savings, and has produced favorable economic benefit.
Although content of the present invention has been done detailed introduction through above-mentioned preferred embodiment, will be appreciated that above-mentioned description should not be considered to limitation of the present invention.After those skilled in the art have read foregoing, for multiple modification of the present invention with to substitute all will be conspicuous.Therefore, protection scope of the present invention should be limited appended claim.
Claims (8)
1. a cooling system that is used for power transformer comprises waterworks (10), heat exchanger (20), cooling tower (30), water-softening plant (40), distributive pipe (60) and short circuit plate (70); Waterworks (10) are positioned at the system bottom; The outside of heat exchanger (20), cooling tower (30) and waterworks (10) from top to bottom is fixedly connected through some Connection Elements (120) successively, and the inside of heat exchanger (20), cooling tower (30) and waterworks (10) connects each other; Water-softening plant (40) connects with waterworks (10) through short circuit plate (70) and is connected; Distributive pipe (60) connects waterworks (10) and is connected with water-softening plant (40);
It is characterized in that this cooling system that is used for power transformer also comprises buffer unit (50);
Described buffer unit (50) is arranged on the system top, and it comprises buffer tank (501);
Described buffer tank (501) top is provided with buffer tank water inlet (5011);
Described buffer tank water inlet (5011) connects with waterworks (10) through distributive pipe (60) and is connected;
Described buffer tank (501) is fixedly connected through some Connection Elements (120) with the outside of heat exchanger (20), and inside connects each other.
2. the cooling system that is used for power transformer as claimed in claim 1 is characterized in that, the top of described buffer tank (501) also is provided with the automatic exhaust steam valve (5012) that is used for the discharge of the gas in the buffer tank (501).
3. the cooling system that is used for power transformer as claimed in claim 2 is characterized in that, described cooling system also comprises filter (80);
Described filter (80) connects through distributive pipe (60) with the buffer tank water inlet (5011) of the buffer unit (50) at waterworks (10) and system top respectively and is connected.
The blowdown pipe (802) that described filter (80) comprises filter body (801), draw from filter body (801) and be arranged on the blowdown valve (803) on the blowdown pipe (802).
4. the cooling system that is used for power transformer as claimed in claim 3 is characterized in that, described cooling system also comprises the branch water plate (90) that is arranged between buffer tank (501) and the heat exchanger (20);
Described buffer tank (501), branch water plate (90) from top to bottom are fixedly connected through some Connection Elements (120) with the outside of heat exchanger (20) successively, and inside connects each other.
5. the cooling system that is used for power transformer as claimed in claim 4 is characterized in that, described cooling system also comprises the trickle orifice plate (100) that is arranged between heat exchanger (20) and the cooling tower (30);
The outside of described trickle orifice plate (100), heat exchanger (20) and waterworks (10) from top to bottom is fixedly connected through some Connection Elements (120) successively, and inside connects each other.
6. the cooling system that is used for power transformer as claimed in claim 5 is characterized in that, water plate (90), buffer tank (501) sealed through potted component (110) with the connecting portion of heat exchanger (20) in described minute.
7. the cooling system that is used for power transformer as claimed in claim 6 is characterized in that, the connecting portion of described trickle orifice plate (100), heat exchanger (20) and waterworks (10) is through potted component (110) sealing.
8. the cooling system that is used for power transformer as claimed in claim 1 is characterized in that, described cooling system also comprises the base (130) that is used to support whole system weight;
Described waterworks (10) are placed on the base (130) with water-softening plant (40).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101411686A CN101819857B (en) | 2010-04-06 | 2010-04-06 | Cooling system for power transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101411686A CN101819857B (en) | 2010-04-06 | 2010-04-06 | Cooling system for power transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101819857A CN101819857A (en) | 2010-09-01 |
| CN101819857B true CN101819857B (en) | 2012-01-25 |
Family
ID=42654899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101411686A Active CN101819857B (en) | 2010-04-06 | 2010-04-06 | Cooling system for power transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101819857B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102945730A (en) * | 2012-11-11 | 2013-02-27 | 国家电网公司 | Power transformer |
| CN110931217B (en) * | 2019-11-06 | 2020-12-18 | 南京玻璃纤维研究设计院有限公司 | Transformer that electric stove was used is smelted to rock wool goods |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070075971A (en) * | 2006-01-17 | 2007-07-24 | 임성황 | Transformer water cooling system using refrigerant vaporization heat |
| CN201117398Y (en) * | 2007-11-02 | 2008-09-17 | 中电电气集团有限公司 | Water cooling device for transformer |
-
2010
- 2010-04-06 CN CN2010101411686A patent/CN101819857B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070075971A (en) * | 2006-01-17 | 2007-07-24 | 임성황 | Transformer water cooling system using refrigerant vaporization heat |
| CN201117398Y (en) * | 2007-11-02 | 2008-09-17 | 中电电气集团有限公司 | Water cooling device for transformer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101819857A (en) | 2010-09-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8353979B2 (en) | Heat recovery apparatus and heat recovery method | |
| CN104748610B (en) | A kind of cooling tower cooling system | |
| CN205784091U (en) | A kind of highly efficient cooling device of mould | |
| CN201983650U (en) | Separated heat transfer spray closed cooling tower | |
| CN102538516A (en) | Horizontal fixed tube sheet type heat exchanging device and method | |
| CN109595947B (en) | Industrial slag sensible heat recovery system and recovery method thereof | |
| CN101819857B (en) | Cooling system for power transformer | |
| CN201488598U (en) | Evaporative closed-type water cooling tower | |
| CN101832623A (en) | Pre-heat system of thermal power plant | |
| CN202326099U (en) | Heat recovery system of water-cooling air compressor | |
| CN206818029U (en) | A kind of pure Ti-heat exchanger device of combined type | |
| CN104457338A (en) | Heat exchanging method for horizontal type heat exchanger for steam cooling with high degree of superheat | |
| CN104864770A (en) | Online cleaning system and method for circulating cooling water heat exchanger | |
| CN209621560U (en) | A kind of residual heat of air compressor recycling supplying hot water circulating water saving system | |
| CN204064029U (en) | A kind of industrial waste water disposal device | |
| CN207922904U (en) | A kind of cooling circulating water unit | |
| CN104110975B (en) | A kind of industrial waste water disposal device | |
| CN102529050B (en) | Heat exchange device for high gloss mold temperature controller | |
| CN202304486U (en) | Anti-corrosion cooling tower coil pipe type heat radiator | |
| CN107339905B (en) | Device and method for controlling medium temperature by circulating cooling water | |
| CN204944231U (en) | The cooling tower circulatory system | |
| CN219346946U (en) | Efficient intelligent reverse circulation slurry cooling system | |
| CN221527443U (en) | Fin tube air cooler applied to aromatic hydrocarbon extraction | |
| CN213599613U (en) | Improved evaporation cooling structure | |
| CN103045823A (en) | Air cooling device for quenching liquid |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240313 Address after: 461000 No. 1666, Jinlong street, Xuchang Economic and Technological Development Zone, Xuchang City, Henan Province Patentee after: Henan Jingrui Cooling Technology Co.,Ltd. Country or region after: China Address before: 201713 No. 101 Kang Road, Zhujiajue Industrial Park, Qingpu District, Shanghai Patentee before: SHANGHAI HAIDING INDUSTRIAL DEVELOPMENT Co.,Ltd. Country or region before: China |
|
| TR01 | Transfer of patent right |