CN108296150B - Spraying technology for transformer oil tank - Google Patents
Spraying technology for transformer oil tank Download PDFInfo
- Publication number
- CN108296150B CN108296150B CN201710869986.XA CN201710869986A CN108296150B CN 108296150 B CN108296150 B CN 108296150B CN 201710869986 A CN201710869986 A CN 201710869986A CN 108296150 B CN108296150 B CN 108296150B
- Authority
- CN
- China
- Prior art keywords
- oil tank
- spraying
- spraying technology
- paint film
- buffer layer
- 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.)
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- 238000005507 spraying Methods 0.000 title claims abstract description 35
- 238000005516 engineering process Methods 0.000 title claims abstract description 14
- 239000003973 paint Substances 0.000 claims abstract description 43
- 229920005989 resin Polymers 0.000 claims abstract description 32
- 239000011347 resin Substances 0.000 claims abstract description 32
- 238000001035 drying Methods 0.000 claims abstract description 20
- 238000004140 cleaning Methods 0.000 claims abstract description 6
- RWSXRVCMGQZWBV-WDSKDSINSA-N glutathione Chemical compound OC(=O)[C@@H](N)CCC(=O)N[C@@H](CS)C(=O)NCC(O)=O RWSXRVCMGQZWBV-WDSKDSINSA-N 0.000 claims description 18
- VLDPXPPHXDGHEW-UHFFFAOYSA-N 1-chloro-2-dichlorophosphoryloxybenzene Chemical compound ClC1=CC=CC=C1OP(Cl)(Cl)=O VLDPXPPHXDGHEW-UHFFFAOYSA-N 0.000 claims description 16
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 16
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 12
- 108010024636 Glutathione Proteins 0.000 claims description 9
- 229920002684 Sepharose Polymers 0.000 claims description 9
- 229960003180 glutathione Drugs 0.000 claims description 9
- WOBRFSDEZREQAB-UHFFFAOYSA-N trimethyl-(2-trimethylsilyloxycyclobuten-1-yl)oxysilane Chemical compound C[Si](C)(C)OC1=C(O[Si](C)(C)C)CC1 WOBRFSDEZREQAB-UHFFFAOYSA-N 0.000 claims description 9
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 8
- USIUVYZYUHIAEV-UHFFFAOYSA-N diphenyl ether Natural products C=1C=CC=CC=1OC1=CC=CC=C1 USIUVYZYUHIAEV-UHFFFAOYSA-N 0.000 claims description 8
- -1 diphenyl ether diamine Chemical class 0.000 claims description 8
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 5
- 239000003822 epoxy resin Substances 0.000 claims description 5
- 229910052742 iron Inorganic materials 0.000 claims description 5
- 229920000647 polyepoxide Polymers 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims description 5
- UXWKDYXFUUBISW-UHFFFAOYSA-N 2,2-dimethyl-1,3,6,9-tetraoxa-2-silacycloundecane Chemical compound C[Si]1(C)OCCOCCOCCO1 UXWKDYXFUUBISW-UHFFFAOYSA-N 0.000 claims description 3
- 239000000047 product Substances 0.000 description 13
- 230000000052 comparative effect Effects 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 239000013065 commercial product Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 238000007591 painting process Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
- B05D7/56—Three layers or more
- B05D7/58—No clear coat specified
- B05D7/586—No clear coat specified each layer being cured, at least partially, separately
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
- B05D7/26—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials synthetic lacquers or varnishes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D179/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen, with or without oxygen, or carbon only, not provided for in groups C09D161/00 - C09D177/00
- C09D179/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
- C09D179/08—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2504/00—Epoxy polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2518/00—Other type of polymers
- B05D2518/10—Silicon-containing polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2530/00—Rubber or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2601/00—Inorganic fillers
- B05D2601/20—Inorganic fillers used for non-pigmentation effect
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Paints Or Removers (AREA)
Abstract
The invention relates to a spraying technology of a transformer oil tank, which comprises the following steps: step 1, cleaning, phosphorizing and drying an oil tank to be sprayed; step 2, spraying a first paint film on the inner side and the outer side of the oil tank; step 3, after drying, spraying an elastic resin buffer layer on the first paint film of the oil tank; and 4, spraying a second paint film on the elastic resin buffer layer after drying.
Description
Technical Field
The invention relates to a spraying technology of a transformer oil tank.
Background
The oil tank is the shell of the transformer, the iron core and the winding are arranged in the oil tank and filled with transformer oil, and the iron core and the winding are immersed in the oil. The transformer oil plays the role of insulation and heat dissipation. The large transformer generally comprises two oil tanks, wherein one oil tank is a main body oil tank; one is an on-load voltage-adjusting oil tank, and a tap switch is arranged in the on-load voltage-adjusting oil tank. This is because the tap changer may generate an arc during operation, which may deteriorate the insulating property of oil if frequent operations are performed, and thus a separate tank is provided to place the tap changer separately.
The common transformer oil tank has 3 basic types, namely a tank type oil tank, a bell jar type oil tank and a sealed type oil tank according to the capacity of the oil tank.
CN102962187A discloses a painting process for a transformer oil tank and parts thereof, which comprises the following steps: firstly, blending paint; secondly, filtering the paint by using a 120-180-mesh sand screen after the paint is prepared; step three, painting is carried out; and fourthly, drying after the paint is coated.
CN106064139A discloses a surface coating process of a transformer oil tank, which comprises the following steps: 1) pre-degreasing the oil tank, the combined variable door plate and the workpiece with more oil stains on the surface; 2) oil and rust removal: a workpiece with light surface oil stain is directly put into a tank for normal temperature treatment; 3) first washing: operating at normal temperature, and swinging the workpiece left and right, front and back and up and down under liquid; 4) and (3) second water washing: operating at normal temperature, and swinging the workpiece left and right, front and back and up and down under liquid; 5) phosphorization; 6) soaking and washing with hot water: the temperature of the bath solution is not less than 70 ℃, and the time is 1-2 min; 7) drying; 8) coating a primer: spraying primer on the inner wall and the outer wall of the box body; 9) coating a middle layer paint: spraying middle layer paint on the inner wall and the outer wall of the box body; 10) coating finish paint: and spraying finish paint on the inner wall and the outer wall of the box body.
The main disadvantage of the existing paint film sprayed on the transformer oil tank is that the paint film is easy to fall off and crack, so that the tank body of the oil tank is rusted, and meanwhile, no measures are taken for preventing collision possibly generated in daily use.
Disclosure of Invention
The purpose of the invention is: the spraying technology for the transformer oil tank is characterized by comprising the following steps:
step 1, cleaning, phosphorizing and drying the oil tank to be sprayed.
And 2, spraying a first paint film on the inner side and the outer side of the oil tank.
And 3, after drying, spraying an elastic resin buffer layer on the first paint film of the oil tank.
And 4, spraying a second paint film on the elastic resin buffer layer after drying.
The first paint film is chlorinated rubber micaceous iron paint.
The preparation method of the elastic resin buffer layer comprises the following steps: according to the weight portion, pyromellitic dianhydride and diphenyl ether diamine are dissolved in dimethylformamide, 1, 2-bis (trimethylsiloxy) cyclobutene and 1, 1-dimethylsiloxane-11-crown ether-4 are added, the temperature is raised to 125-140 ℃, the reaction lasts for 3-8h, and after the reaction is finished, glutathione sepharose and calcium carbonate are added into the product, thus obtaining the elastic resin buffer layer.
The second paint film adopts epoxy resin paint.
The mass consumption of the diphenyl ether diamine is 60-75% of pyromellitic dianhydride.
The mass consumption of the 1, 2-bis (trimethylsiloxy) cyclobutene is 1.5-4.5% of pyromellitic dianhydride.
The mass consumption of the 1, 1-dimethyl sila-11-crown-4 is 1-3% of pyromellitic dianhydride.
The mass consumption of the glutathione sepharose gel is 1-3% of pyromellitic dianhydride.
The mass consumption of the calcium carbonate is 4-8% of that of the pyromellitic dianhydride.
The pyromellitic dianhydride is a product sold in the market, such as a product produced by Zhengzhou Jex chemical products Co., Ltd; the diphenyl ether diamine is a product sold in the market, such as a product produced by Shanghai Rong Biotechnology Limited; the 1, 2-bis (trimethylsiloxy) cyclobutene is a commercial product, such as a product produced by Hangzhou high chemical engineering company; the 1, 1-dimethyl sila-11-crown-4 is a commercial product, such as a product produced by Beijing Wai Ruike chemical company; glutathione sepharose is a commercially available product, such as a product produced by Xian blue Xiao Tech Co.
The product of the invention has the following beneficial effects:
the elastic resin buffer layer has good elasticity, ductility and adhesiveness, can buffer collision energy when a paint film of an oil tank is collided, adheres an inner paint film and an outer paint film, and protects the paint film of the oil tank from being damaged slightly; the elastic resin has excellent dielectric property and small dielectric constant, and is suitable for being used as a paint film of a transformer oil tank; the elastic resin layer contains calcium carbonate, the surface is relatively concave-convex, and the elastic resin layer is conveniently connected with the inner paint film and the outer paint film more tightly.
Detailed Description
The following examples are intended to further illustrate the present invention and are not intended to limit the scope of the invention.
Example 1
Step 1, cleaning, phosphorizing and drying the oil tank to be sprayed.
And 2, spraying a first chlorinated rubber micaceous iron paint film on the inner side and the outer side of the oil tank.
And 3, after drying, spraying an elastic resin buffer layer on the first paint film of the oil tank.
And 4, spraying a second epoxy resin paint film on the elastic resin buffer layer after drying.
The preparation method of the elastic resin buffer layer comprises the following steps: adding 100Kg of pyromellitic dianhydride, 67.5Kg of diphenyl ether diamine, 3Kg of 1, 2-bis (trimethylsiloxy) cyclobutene and 42Kg of 1, 1-dimethylsiloxane-11-crown ether into a reaction kettle, heating to 132 ℃, reacting for 5.5 hours, and adding 2Kg of glutathione sepharose and 6Kg of calcium carbonate into a product after the reaction is finished to obtain the elastic resin buffer layer.
Example 2
Step 1, cleaning, phosphorizing and drying the oil tank to be sprayed.
And 2, spraying a first chlorinated rubber micaceous iron paint film on the inner side and the outer side of the oil tank.
And 3, after drying, spraying an elastic resin buffer layer on the first paint film of the oil tank.
And 4, spraying a second epoxy resin paint film on the elastic resin buffer layer after drying.
The preparation method of the elastic resin buffer layer comprises the following steps: adding 100Kg of pyromellitic dianhydride, 60Kg of diphenyl ether diamine, 1.5Kg of 1, 2-bis (trimethylsiloxy) cyclobutene and 41Kg of 1, 1-dimethylsiloxane-11-crown ether into a reaction kettle, heating to 125 ℃, reacting for 3 hours, and adding 1Kg of glutathione sepharose and 4Kg of calcium carbonate into a product after the reaction is finished to obtain the elastic resin buffer layer.
Example 3
Step 1, cleaning, phosphorizing and drying the oil tank to be sprayed.
And 2, spraying a first chlorinated rubber micaceous iron paint film on the inner side and the outer side of the oil tank.
And 3, after drying, spraying an elastic resin buffer layer on the first paint film of the oil tank.
And 4, spraying a second epoxy resin paint film on the elastic resin buffer layer after drying.
The preparation method of the elastic resin buffer layer comprises the following steps: adding 100Kg of pyromellitic dianhydride, 75Kg of diphenyl ether diamine, 4.5Kg of 1, 2-bis (trimethylsiloxy) cyclobutene and 43Kg of 1, 1-dimethylsiloxa-11-crown ether into a reaction kettle, heating to 140 ℃, reacting for 8 hours, and adding 3Kg of glutathione sepharose and 8Kg of calcium carbonate into a product after the reaction is finished to obtain the elastic resin buffer layer.
Comparative example 1
The elastomeric resin was prepared without adding 1, 2-bis (trimethylsiloxy) cyclobutene under the same conditions as in example 1.
Comparative example 2
The same procedure as in example 1 was repeated except that 1, 1-dimethylsiloxa-11-crown-4 was not added to the elastomeric resin.
Comparative example 3
Glutathione sepharose was not added to the elastic resin and the other conditions were the same as in example 1.
Example 4
The dielectric constants of the elastic resins produced in examples 1 to 3 and comparative examples 1 to 3 were examined, respectively, and the elongation of the elastic resin was examined.
TABLE 1 dielectric constants of the elastic resins produced in examples 1 to 3 and comparative examples 1 to 3.
Claims (5)
1. A spraying technology for a transformer oil tank is characterized by comprising the following steps:
cleaning, phosphorizing and drying an oil tank to be sprayed;
secondly, spraying a first paint film on the inner side and the outer side of the oil tank;
step three, after drying, spraying an elastic resin buffer layer on the first paint film of the oil tank;
step four, spraying a second paint film on the elastic resin buffer layer after drying;
the preparation method of the elastic resin buffer layer coating comprises the following steps: according to the weight parts, pyromellitic dianhydride and diphenyl ether diamine are dissolved in dimethylformamide, 1, 2-bis (trimethylsiloxy) cyclobutene and 1, 1-dimethylsiloxane-11-crown ether-4 are added, the temperature is increased to 125-140 ℃, the reaction is carried out for 3-8h, and after the reaction is finished, glutathione sepharose and calcium carbonate are added into the product, thus obtaining the elastic resin buffer layer coating;
the mass usage of the diphenyl ether diamine is 60-75% of pyromellitic dianhydride;
the 1, 2-bis (trimethylsiloxy) cyclobutene accounts for 1.5 to 4.5 mass percent of the pyromellitic dianhydride;
the mass consumption of the 1, 1-dimethyl sila-11-crown-4 is 1-3% of pyromellitic dianhydride.
2. The spraying technology for the oil tank of the transformer as claimed in claim 1, wherein the spraying technology comprises the following steps: the first paint film is chlorinated rubber micaceous iron paint.
3. The spraying technology for the oil tank of the transformer as claimed in claim 1, wherein the spraying technology comprises the following steps: the second paint film adopts epoxy resin paint.
4. The spraying technology for the oil tank of the transformer as claimed in claim 3, wherein the spraying technology comprises the following steps: the mass consumption of the glutathione sepharose gel is 1-3% of pyromellitic dianhydride.
5. The spraying technology for the oil tank of the transformer as claimed in claim 3, wherein the spraying technology comprises the following steps: the mass consumption of the calcium carbonate is 4-8% of that of the pyromellitic dianhydride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710869986.XA CN108296150B (en) | 2017-09-23 | 2017-09-23 | Spraying technology for transformer oil tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710869986.XA CN108296150B (en) | 2017-09-23 | 2017-09-23 | Spraying technology for transformer oil tank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108296150A CN108296150A (en) | 2018-07-20 |
| CN108296150B true CN108296150B (en) | 2020-08-25 |
Family
ID=62869442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710869986.XA Active CN108296150B (en) | 2017-09-23 | 2017-09-23 | Spraying technology for transformer oil tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108296150B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102962187A (en) * | 2012-12-17 | 2013-03-13 | 江苏亨特集团华特电气有限公司 | Transformer oil tank and painting technique for parts thereof |
| CN105140013A (en) * | 2015-09-23 | 2015-12-09 | 江苏宏源电气有限责任公司 | Paint spraying process for corrugated oil tank of oil-immersed transformer |
| CN106064139A (en) * | 2016-04-27 | 2016-11-02 | 南通盛洋电气有限公司 | A kind of external coating technique of oil tank of transformer |
-
2017
- 2017-09-23 CN CN201710869986.XA patent/CN108296150B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102962187A (en) * | 2012-12-17 | 2013-03-13 | 江苏亨特集团华特电气有限公司 | Transformer oil tank and painting technique for parts thereof |
| CN105140013A (en) * | 2015-09-23 | 2015-12-09 | 江苏宏源电气有限责任公司 | Paint spraying process for corrugated oil tank of oil-immersed transformer |
| CN106064139A (en) * | 2016-04-27 | 2016-11-02 | 南通盛洋电气有限公司 | A kind of external coating technique of oil tank of transformer |
Non-Patent Citations (1)
| Title |
|---|
| 变压器油箱涂装设计一例;李敏风等;《腐蚀与防护》;20061130;第27卷(第11期);579-582 * |
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| Publication number | Publication date |
|---|---|
| CN108296150A (en) | 2018-07-20 |
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Effective date of registration: 20221025 Address after: No. 1 Xinggong Road, Jiangdong District, Jiangshan Economic Development Zone, Quzhou City, Zhejiang Province 324123 Patentee after: ZHEJIANG JIANGSHAN POWER TRANSFORMER Co.,Ltd. Address before: 324100 3 building, 24 West Ring Road, Jiangshan City, Quzhou, Zhejiang. Patentee before: JIANGSHAN HAIWEI TECHNOLOGY Co.,Ltd. |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A Spraying Technology for Transformer Oil Tank Granted publication date: 20200825 Pledgee: Zhejiang Jiangshan rural commercial bank Limited by Share Ltd. Pledgor: ZHEJIANG JIANGSHAN POWER TRANSFORMER Co.,Ltd. Registration number: Y2024980017429 |