CN105609235A - Oil-immersed distribution transformer - Google Patents
Oil-immersed distribution transformer Download PDFInfo
- Publication number
- CN105609235A CN105609235A CN201610027240.XA CN201610027240A CN105609235A CN 105609235 A CN105609235 A CN 105609235A CN 201610027240 A CN201610027240 A CN 201610027240A CN 105609235 A CN105609235 A CN 105609235A
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- China
- Prior art keywords
- particle diameter
- box body
- distribution transformer
- powder
- type distribution
- 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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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000011812 mixed powder Substances 0.000 claims abstract description 11
- 239000002245 particle Substances 0.000 claims description 32
- 239000000843 powder Substances 0.000 claims description 32
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 241000270295 Serpentes Species 0.000 claims description 6
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 claims description 6
- 235000013312 flour Nutrition 0.000 claims description 6
- 239000000446 fuel Substances 0.000 claims description 6
- 239000010445 mica Substances 0.000 claims description 6
- 229910052618 mica group Inorganic materials 0.000 claims description 6
- 229910052759 nickel Inorganic materials 0.000 claims description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 239000004575 stone Substances 0.000 claims description 6
- -1 50 parts Substances 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 2
- 239000002355 dual-layer Substances 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 26
- 230000000052 comparative effect Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 238000004804 winding Methods 0.000 description 5
- 239000002828 fuel tank Substances 0.000 description 4
- 230000005855 radiation Effects 0.000 description 4
- 230000000875 corresponding effect Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 235000013339 cereals Nutrition 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/02—Casings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/06—Mounting, supporting or suspending transformers, reactors or choke coils not being of the signal type
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/085—Cooling by ambient air
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/12—Oil cooling
- H01F27/14—Expansion chambers; Oil conservators; Gas cushions; Arrangements for purifying, drying, or filling
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/33—Arrangements for noise damping
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/36—Electric or magnetic shields or screens
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transformer Cooling (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The invention provides an oil-immersed distribution transformer, which comprises a box body, a finned radiator, a fan motor and at least four conical grooves, wherein the finned radiator is arranged on the side surface of the box body; the fan motor is arranged at the bottom part of the finned radiator; the top part of the box body is provided with a high-voltage sleeve and a low-voltage sleeve; an oil storage tank is arranged at the upper part of the box body, and is communicated with the box body through a pipe; a gas relay is arranged at the middle part of the pipe; an iron core and a coil are arranged in the box body; the coil is arranged on the iron core; a base is arranged at the lower part of the box body; at least four fixing legs are arranged at the bottom part of the base and are conical; rubber which is 1.2-1.7cm thick wraps the outer surfaces of the fixing legs; the at least four conical grooves correspond to the fixing legs; rubber which is 1.2-1.7cm thick is arranged on the inner surfaces of the conical grooves; the box body wall of the box body is in a dual-layer structure formed by combining an inner box body plate and an outer box body plate; and mixed powder is filled in the middle of the inner box body plate and the outer box body plate.
Description
Technical field
The invention belongs to electrical equipment technical field, be specially a kind of oil immersion-type distribution transformer.
Background technology
Oil-filled transformer is mainly made up of iron core, winding, fuel tank, conservator, insulating sleeve, shunting switch and gas relay etc. Iron core is the magnetic circuit part of transformer. When operation, to produce magnetic hystersis loss and eddy-current loss and generate heat. For reducing heating loss and reducing volume and weight, iron core adopts and is less than the cold rolling grain oriented silicon steel sheet formation that 0.35mm magnetic capacity is high. Winding and iron core are all the core parts of transformer. There is contact resistance because winding itself has resistance or joint, know and will produce heat by I2Rt. Therefore winding can not pass through the electric current higher than rated current for a long time. The device body (winding and iron core) of another oil-filled transformer is all contained in the fuel tank that is full of transformer oil, and fuel tank is welded into steel plate. The fuel tank of medium and small transformer is made up of case shell and case lid, and the device body of transformer is placed in case shell, and case lid is opened and just can be hung out device body and overhaul.
At present, European and American developed countries also do not have power frequency electromagnetic field exposure limits standard or other international standards, only have the international Non-ionizing radiation protection committee (ICNIRP) to recommend the directive/guide of Electric and magnetic fields radiation limitations to countries in the world. The guiding principles for environmental evaluation normative reference electric-field intensity of China is 4 kilovolts/meter (kV/m), and magnetic field intensity is 100 micro-teslas (μ T), and in European community legislation, these two numerical value are respectively 5 kilovolts/meter and 100 micro-teslas; The same European Community of Australia; Britain is 12 kilovolts/meter and 1600 micro-teslas. Transformer noise is by body construction design, type selecting layout, installation, use procedure, mechanical noise irregular, that cause intermittently, continuously or at random and airborne noise summation that transformer body and cooling system produce. The noise that transformer produces extensively affects the places such as residential quarters, commercial center, light station, airport, factories and miness, enterprise, hospital, school. Application number is 201220447315 Chinese patent, the Chinese patent that application number is 201320356540 etc., although disclose the mode that reduces transformer noise, is not suitable for oil-filled transformer or noise reduction is lower.
Summary of the invention
The object of the invention is to overcome deficiency of the prior art, and a kind of low noise oil immersion-type distribution transformer with excellent heat-sinking capability is provided.
Oil immersion-type distribution transformer of the present invention, comprises casing, is arranged on the gilled radiator of described casing side, is arranged on the fan electromotor of described gilled radiator bottom, and the top of described casing is provided with bushing and low-tension bushing; Described casing top is provided with fuel reserve tank, and described fuel reserve tank is by casing described in pipeline communication, and the middle part of described pipeline is provided with gas relay, is provided with unshakable in one's determination and is arranged on the coil on described iron core in described casing, and the bottom of described casing is provided with base; Described base bottom is fixed with at least four Convenient tables, and described Convenient table is conical, and Convenient table outer surface is enclosed with the rubber that 1.2～1.7cm is thick; Also comprise that at least four with the corresponding cone-shaped groove of Convenient table, described cone-shaped groove inner surface is provided with the rubber that 1.2～1.7cm is thick; The box body wall of described casing is the double-decker that internal box plate and outer case plate are combined into, and is filled with the mixed-powder being made up of particle diameter 1 μ-nickel powder, particle diameter 10 micron graphite powder, 20 microns of snake stone flours of particle diameter, 40 microns of aluminum nitride powders of particle diameter, Tissuemat E powder in the middle of described internal box plate and outer case plate.
Oil immersion-type distribution transformer of the present invention, the distance between internal box plate and outer case plate is 0.6～0.7cm.
Oil immersion-type distribution transformer of the present invention, is vertically arranged with multiple baffle plates in the middle of internal box plate and outer case plate.
Oil immersion-type distribution transformer of the present invention, the Aspect Ratio of Convenient table is 3:1.
Oil immersion-type distribution transformer of the present invention, get by weight 60 parts of particle diameter 1 μ-nickel powders, 50 parts, particle diameter 10 micron graphite powder, 70 parts of 20 microns of snake stone flours of particle diameter, 140 parts of 40 microns of aluminum nitride powders of particle diameter, 20 parts, Tissuemat E powder, add the powder stirrer described mixed-powder that stirs to obtain.
Oil immersion-type distribution transformer of the present invention, described Convenient table is fixed on described base bottom by connecting rod, between described Convenient table and base, be provided with an annular gasket, described annular gasket bottom is provided with the rubber that 1.2～1.7cm is thick, described in when installation, annular gasket is fixed on described cone-shaped groove top, thereby described Convenient table is enclosed in described cone-shaped groove, in the gap between described Convenient table and described cone-shaped groove, is filled with 40 microns of mica powders of particle diameter and 20 microns of mica powders of particle diameter admixed finepowder by weight 1:2 ratio composition.
Oil immersion-type distribution transformer of the present invention, the side of casing is also provided with oil purifier.
Oil immersion-type distribution transformer of the present invention, by the box body wall interlayer of particular design, adds different grain size and different types of mixed-powder, has obtained optimized soundproof effect, has reduced the Electric and magnetic fields radiation of transformer simultaneously; In addition, the present invention has also designed unique Convenient table and corresponding cone-shaped groove structure, by this structural design exquisiteness, is filled with admixed finepowder in the gap between Convenient table and described cone-shaped groove simultaneously; Greatly reduce the transmission of transformer vibration and vibration and then reduced noise by this improvement. Oil immersion-type distribution transformer of the present invention passes through, and the improvement of the shielding of casing and transformer self damping two aspects has reached the very outstanding low noise effect of falling, and has reduced the external Electric and magnetic fields radiation of transformer simultaneously.
Brief description of the drawings
Fig. 1 is oil immersion-type distribution transformer structural representation of the present invention.
Fig. 2 is box body wall structural representation of the present invention.
Fig. 3 is Convenient table structural representation of the present invention.
Detailed description of the invention
The invention will be further described for embodiment plan given below; but can not be interpreted as it is limiting the scope of the invention; according to the present invention, content, to nonessential improvement and adjustment more of the present invention, still belongs to protection scope of the present invention to those skilled in the art.
Embodiment 1: oil immersion-type distribution transformer as shown in Figure 1, Figure 2, Figure 3 shows, comprises casing 1, is arranged on the gilled radiator 2 of casing 1 side, is arranged on the fan electromotor 3 of gilled radiator 2 bottoms, and the top of casing 1 is provided with bushing 4 and low-tension bushing 5; Casing 1 top is provided with fuel reserve tank 6, and fuel reserve tank 6 is communicated with casing 1 by pipeline 7, and the middle part of pipeline 7 is provided with gas relay 8, is provided with iron core 9 and is arranged on the coil 10 on unshakable in one's determination 9 in casing 1, and the bottom of casing 1 is provided with base 11; The side of casing 1 is also provided with oil purifier 23. Base 11 belows are provided with at least four Convenient tables 12, and Convenient table 12 is conical, and Convenient table 12 outer surfaces are enclosed with the rubber 13 that 1.2～1.7cm is thick; Also comprise that at least four with the corresponding cone-shaped groove 17 of Convenient table 12, cone-shaped groove 17 inner surfaces are provided with the rubber 18 that 1.2～1.7cm is thick; Convenient table 12 is fixed on base 11 belows by connecting rod 14, between Convenient table 12 and base 11, be provided with an annular gasket 15, annular gasket 15 bottoms are provided with the rubber 16 that 1.2～1.7cm is thick, when installation, annular gasket 15 is fixed on cone-shaped groove 17 tops, thereby Convenient table 12 is enclosed in cone-shaped groove 17, in the gap between Convenient table 12 and cone-shaped groove 17, is filled with 40 microns of mica powders of particle diameter and 20 microns of mica powders of particle diameter admixed finepowder 19 by weight 1:2 ratio composition. The box body wall of casing 1 is the double-decker that internal box plate 20 and outer case plate 21 are combined into, and in the middle of internal box plate 20 and outer case plate 21, is filled with mixed-powder 22. Distance between internal box plate 20 and outer case plate 21 is 0.6～0.7cm. Can in the middle of internal box plate 20 and outer case plate 21, be vertically arranged with multiple baffle plates to strengthen box body wall intensity. The Aspect Ratio of Convenient table 12 is 3:1. Mixed-powder 22 is by 60 parts of particle diameter 1 μ-nickel powders, 50 parts, particle diameter 10 micron graphite powder, 70 parts of 20 microns of snake stone flours of particle diameter, 140 parts of 40 microns of aluminum nitride powders of particle diameter, 20 parts, Tissuemat E powder, adds by weight the powder stirrer gained that stirs.
Comparative example 1: oil immersion-type distribution transformer structure is as embodiment 1, difference is that mixed-powder crosses following methods and make: get 60 parts of particle diameter 1 μ-nickel powders, 140 parts of 40 microns of aluminum nitride powders of particle diameter, 20 parts, Tissuemat E powder, add powder stirrer to stir; .
Comparative example 2: oil immersion-type distribution transformer structure is as embodiment 1, difference is that mixed-powder crosses following methods and make: get 60 parts of particle diameter 1 μ-nickel powders, 50 parts, particle diameter 10 micron graphite powder, 20 parts, Tissuemat E powder,, add powder stirrer to stir; .
Comparative example 3: oil immersion-type distribution transformer structure is as embodiment 1, difference is that mixed-powder crosses following methods and make: get 60 parts of particle diameter 1 μ-nickel powders, 70 parts of 20 microns of snake stone flours of particle diameter, 20 parts, Tissuemat E powder,, add powder stirrer to stir; .
Comparative example 4: oil immersion-type distribution transformer structure is as embodiment 1, difference is in the gap between Convenient table and cone-shaped groove, not fill admixed finepowder under oil immersion-type distribution transformer base.
Correlated noise experiment: being divided into five groups is respectively that the grand S9-500KVA of opening up oil immersion-type distribution transformer obtains according to technical scheme house of correction in embodiment 1, comparative example 1, comparative example 2, comparative example 3, comparative example 4. The acoustic power level of testing each group according to the method for testing in " JB/T10088-20046kV ~ 500kV level power transformer sound level ", the results are shown in Table 1. By the visible noise that adopts embodiments of the invention 1 of table 1, there is significant reduction with respect to other groups.
Claims (7)
1. oil immersion-type distribution transformer, comprises casing, is arranged on the gilled radiator of described casing side, is arranged on the fan electromotor of described gilled radiator bottom, and the top of described casing is provided with bushing and low-tension bushing; Described casing top is provided with fuel reserve tank, and described fuel reserve tank is by casing described in pipeline communication, and the middle part of described pipeline is provided with gas relay, is provided with unshakable in one's determination and is arranged on the coil on described iron core in described casing, and the bottom of described casing is provided with base; It is characterized in that described base bottom is fixed with at least four Convenient tables, described Convenient table is conical, and Convenient table outer surface is enclosed with the rubber that 1.2～1.7cm is thick; Also comprise that at least four with the corresponding cone-shaped groove of Convenient table, described cone-shaped groove inner surface is provided with the rubber that 1.2～1.7cm is thick; The box body wall of described casing is the double-decker that internal box plate and outer case plate are combined into, and is filled with the mixed-powder being made up of particle diameter 1 μ-nickel powder, particle diameter 10 micron graphite powder, 20 microns of snake stone flours of particle diameter, 40 microns of aluminum nitride powders of particle diameter, Tissuemat E powder in the middle of described internal box plate and outer case plate.
2. oil immersion-type distribution transformer according to claim 1, is characterized in that the distance between described internal box plate and outer case plate is 0.6～0.7cm.
3. oily oil immersion-type distribution transformer according to claim 1, is characterized in that being vertically arranged with multiple baffle plates in the middle of described internal box plate and outer case plate.
4. oil immersion-type distribution transformer according to claim 1, the Aspect Ratio that it is characterized in that described Convenient table is 3:1.
5. oil immersion-type distribution transformer according to claim 1, it is characterized in that getting by weight 60 parts of particle diameter 1 μ-nickel powders, 50 parts, particle diameter 10 micron graphite powder, 70 parts of 20 microns of snake stone flours of particle diameter, 140 parts of 40 microns of aluminum nitride powders of particle diameter, 20 parts, Tissuemat E powder, add the powder stirrer described mixed-powder that stirs to obtain.
6. oil immersion-type distribution transformer according to claim 1, it is characterized in that described Convenient table is fixed on described base bottom by connecting rod, between described Convenient table and base, be provided with an annular gasket, described annular gasket bottom is provided with the rubber that 1.2～1.7cm is thick, described in when installation, annular gasket is fixed on described cone-shaped groove top, thereby described Convenient table is enclosed in described cone-shaped groove, in gap between described Convenient table and described cone-shaped groove, be filled with 40 microns of mica powders of particle diameter and 20 microns of mica powders of particle diameter admixed finepowder by weight 1:2 ratio composition.
7. oil immersion-type distribution transformer according to claim 1, is characterized in that the side of described casing is also provided with oil purifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610027240.XA CN105609235B (en) | 2016-01-15 | 2016-01-15 | A kind of oil immersion-type distribution transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610027240.XA CN105609235B (en) | 2016-01-15 | 2016-01-15 | A kind of oil immersion-type distribution transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105609235A true CN105609235A (en) | 2016-05-25 |
| CN105609235B CN105609235B (en) | 2017-07-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610027240.XA Active CN105609235B (en) | 2016-01-15 | 2016-01-15 | A kind of oil immersion-type distribution transformer |
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| Country | Link |
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| CN (1) | CN105609235B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113053633A (en) * | 2021-04-02 | 2021-06-29 | 孙菁 | Oil-immersed power transformer with adjustable oil level and anti-disassembly function |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004104053A (en) * | 2002-09-05 | 2004-04-02 | Daiwa Kosei:Kk | Toroidal-transformer-oriented case |
| CN101577170A (en) * | 2008-05-06 | 2009-11-11 | 上海置信电气非晶有限公司 | Oil tank for oil immersion type transformer |
| CN201796683U (en) * | 2010-08-26 | 2011-04-13 | 江苏上能变压器有限公司 | Large-size oil immersed power transformer with a plurality of cooling types |
| CN203966754U (en) * | 2014-07-22 | 2014-11-26 | 浙江绿能电力科技有限公司 | Novel oil-immersed transformer |
| CN204760217U (en) * | 2015-07-13 | 2015-11-11 | 山东天燚电力设备有限公司 | Oil -immersed power transformer |
-
2016
- 2016-01-15 CN CN201610027240.XA patent/CN105609235B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004104053A (en) * | 2002-09-05 | 2004-04-02 | Daiwa Kosei:Kk | Toroidal-transformer-oriented case |
| CN101577170A (en) * | 2008-05-06 | 2009-11-11 | 上海置信电气非晶有限公司 | Oil tank for oil immersion type transformer |
| CN201796683U (en) * | 2010-08-26 | 2011-04-13 | 江苏上能变压器有限公司 | Large-size oil immersed power transformer with a plurality of cooling types |
| CN203966754U (en) * | 2014-07-22 | 2014-11-26 | 浙江绿能电力科技有限公司 | Novel oil-immersed transformer |
| CN204760217U (en) * | 2015-07-13 | 2015-11-11 | 山东天燚电力设备有限公司 | Oil -immersed power transformer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113053633A (en) * | 2021-04-02 | 2021-06-29 | 孙菁 | Oil-immersed power transformer with adjustable oil level and anti-disassembly function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105609235B (en) | 2017-07-14 |
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| C06 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zheng Shengsong Inventor after: Yang Longchao Inventor before: Zhang Qiaomu |
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| CB03 | Change of inventor or designer information | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20170613 Address after: 030014, 129, Ying Road, Taiyuan economic and Technological Development Zone, Shanxi Applicant after: Shanxi Huasong Power Group Co.,Ltd. Address before: 030001, room 122, 9225 Xuefu street, Xiaodian District, Shanxi, Taiyuan Applicant before: Zhang Qiaomu |
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| GR01 | Patent grant | ||
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Address after: 030014 Ma Lianying Road 129, Taiyuan Tanghuai Park, Shanxi Comprehensive Reform Demonstration Area, Taiyuan City, Shanxi Province Patentee after: Hua Song Electric Power Group Co.,Ltd. Address before: 030014, 129, Ying Road, Taiyuan economic and Technological Development Zone, Shanxi Patentee before: Shanxi Huasong Power Group Co.,Ltd. |
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| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 030014 No.129 malinying Road, Taiyuan Tanghuai Park, comprehensive reform demonstration zone, Taiyuan City, Shanxi Province Patentee after: Huasong Power Group Co.,Ltd. Address before: 030014 No.129 malinying Road, Taiyuan Tanghuai Park, Shanxi comprehensive reform demonstration zone, Taiyuan City, Shanxi Province Patentee before: Hua Song Electric Power Group Co.,Ltd. |
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| CP03 | Change of name, title or address | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: An oil immersed distribution transformer Granted publication date: 20170714 Pledgee: Bank of Communications Co.,Ltd. Shanxi Branch Pledgor: Huasong Power Group Co.,Ltd. Registration number: Y2024980032288 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |