CN107424797A - Transformer passes in and out two-wire sleeve pipe - Google Patents
Transformer passes in and out two-wire sleeve pipe Download PDFInfo
- Publication number
- CN107424797A CN107424797A CN201710708904.3A CN201710708904A CN107424797A CN 107424797 A CN107424797 A CN 107424797A CN 201710708904 A CN201710708904 A CN 201710708904A CN 107424797 A CN107424797 A CN 107424797A
- Authority
- CN
- China
- Prior art keywords
- conducting rod
- cover plate
- contact shoe
- sleeve pipe
- insulation crust
- 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.)
- Granted
Links
- 238000009413 insulation Methods 0.000 claims abstract description 41
- 239000007789 gas Substances 0.000 claims abstract description 12
- 238000007789 sealing Methods 0.000 claims description 8
- 239000012212 insulator Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 229920000260 silastic Polymers 0.000 claims description 5
- 239000004020 conductor Substances 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims 4
- 229910000831 Steel Inorganic materials 0.000 claims 2
- 239000010959 steel Substances 0.000 claims 2
- 238000000605 extraction Methods 0.000 abstract description 4
- 238000003754 machining Methods 0.000 abstract 1
- 206010039509 Scab Diseases 0.000 description 19
- 239000003822 epoxy resin Substances 0.000 description 7
- 229920000647 polyepoxide Polymers 0.000 description 7
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 4
- 239000003365 glass fiber Substances 0.000 description 4
- 238000000338 in vitro Methods 0.000 description 4
- 239000007769 metal material Substances 0.000 description 2
- 238000010125 resin casting Methods 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 241000233855 Orchidaceae Species 0.000 description 1
- 239000005030 aluminium foil Substances 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920002379 silicone rubber Polymers 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
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
-
- 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
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/323—Insulation between winding turns, between winding layers
-
- 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
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Insulators (AREA)
- Housings And Mounting Of Transformers (AREA)
- Insulating Bodies (AREA)
Abstract
A kind of transformer passes in and out two-wire sleeve pipe, with insulation crust, its upper and lower side is connected to cover plate and the flange cylinder being connected with transformer flange, two conducting rods are provided with insulation crust, the lower end of every conducting rod is connected with contact shoe, two conducting rods are nested or side by side, the upper end of one conducting rod is connected with cover plate, Second terminal plate is fixed with cover plate, the upper end of another conducting rod is stretched out from the through hole of cover plate, the first end daughter board by cover plate support is connected with its external part, first end daughter board insulate with cover plate, filled with SF6 pressed gas in insulation crust.The extraction of the present invention into and out of line is placed in same sleeve pipe, compact-sized, simple, and inside pipe casing can ensure that dielectric level and machining yield is high, improve cost performance filled with SF6 gases.
Description
Technical field
The present invention relates to transformer to pass in and out two-wire sleeve pipe.
Background technology
At present, when bushing shell for transformer has tolerance HVDC requirements, using epoxy resin impregnated paper sleeve pipe, this sleeve pipe is using exhausted
Edge paper and aluminium foil turn to capacitance core, then are formed epoxy resin casting is carried out outside capacitance core.Passed in and out needing single coil
When line is drawn, into and out of each sleeve pipe of extraction of line, the coil on transformer is more, then sleeve pipe is more.Epoxy resin impregnated paper set
Pipe can be mixed into air when carrying out epoxy resin casting in epoxy layer, and so as to form bubble, bubble has shadow to insulating properties
Ring, so the yield rate of this structures shape epoxy resin impregnated paper sleeve pipe is relatively low, the price of sleeve pipe is also just higher.Asphalt mixtures modified by epoxy resin
The ability for the DC break down voltage that fat impregnated paper sleeve pipe is born is relatively low, if requiring to bear higher DC break down voltage, epoxy resin impregnated paper set
The diameter dimension of pipe can accordingly increase a lot.
The content of the invention
A kind of extraction it is an object of the invention to propose single coil into and out of line is placed in same sleeve pipe and structure is tight
Gather, the transformer disengaging two-wire sleeve pipe that cost performance is improved.
To reach above-mentioned purpose, the present invention takes the first following technical scheme：The present invention has insulation crust, insulate outer
Shell upper and lower side is connected to cover plate and the flange cylinder being connected with transformer flange, and cover plate is provided with through hole, in insulation crust
Interior conducting rod provided with coaxial inner conductor and the hollow outer conducting rod outside interior conducting rod is covered, insulated between inside and outside conducting rod, outside
The upper end of conducting rod is connected with cover plate, Second terminal plate is fixed with cover plate, the upper end of interior conducting rod is from the through hole of cover plate
Stretch out, the first end daughter board by cover plate support is connected with its external part, first end daughter board insulate with cover plate, under outer conducting rod
End is connected with the first contact shoe, is connected between outer conducting rod and the first contact shoe by some first fingertips, the lower end of interior conducting rod
Outer conducting rod is stretched out, its lower end is connected with the second contact shoe, is connected between interior conducting rod and the second contact shoe by some second fingertips
Connect, the second contact shoe is in the first contact shoe and mutually insulated, filled with SF6 pressed gas in the inner chamber of insulation crust.
The insulating washer around interior conducting rod, the upper and lower end of insulating washer are provided between the first end daughter board and cover plate
Sealing ring is respectively embedded with face.
The bottom of second contact shoe is provided with the platform extended to surrounding, and the bottom of the first contact shoe is closed in the second contact
On the platform of son, the second contact shoe and the first contact shoe, which are harmonious between face, is provided with insulation sleeve.
Gap is provided between the inside and outside conducting rod, SF6 gases enter in gap.
First fingertip is fixed on the inwall of the first contact shoe or is fixed on the outer wall of outer conducting rod；Described
Two fingertips are fixed on the inwall of the second contact shoe or are fixed on the outer wall of interior conducting rod.
The insulation crust is that glass fibre reinforced plastic cylinder wraps up in silastic material or is insulator in vitro.
To reach above-mentioned purpose, the present invention takes following second of technical scheme：The present invention has insulation crust, insulate outer
The upper and lower end of shell is connected to cover plate and the flange cylinder being connected with transformer flange, and parallel first is provided with insulation crust
Conducting rod and the second conducting rod, cover plate are provided with through hole corresponding with the first conducting rod, and the upper end of the first conducting rod passes through cover plate
On through hole stretch out, the first end daughter board by cover plate support is connected with its external part, first end daughter board insulate with cover plate, second
The upper end of conducting rod is connected with cover plate, and Second terminal plate is fixed with cover plate, and the lower end of the first conducting rod is connected with contact shoe,
The lower end of second conducting rod is connected with contact shoe, and first, second conducting rod is respectively connected between contact shoe by some fingertips, insulation
Filled with SF6 pressed gas in the inner chamber of shell.
The insulating washer around interior conducting rod, the upper and lower end of insulating washer are provided between the first end daughter board and cover plate
Sealing ring is respectively embedded with face.
The fingertip is fixed on the inwall of contact shoe or is fixed on the outer wall of conducting rod.
The insulation crust is that glass fibre reinforced plastic cylinder wraps up in silastic material or is insulator in vitro.
The present invention has following good effect：1st, the extraction of the present invention into and out of line is placed in same sleeve pipe, is led using two
Electric pole and two tactile sons, a conducting rod and a tactile son coordinate, formation double guide rod, double tactile minor structures, particularly into and out of line
The outside that another conducting rod is enclosed on using a conducting rod is drawn, a contact shoe covers on the outside of another contact shoe, institute
With compact-sized, simple, it is convenient to be provided for assembling.2nd, due to SF6 gas of the cannula cavity filled with certain pressure, it can ensure that sleeve pipe
Meet the dielectric level requirement such as lightning impulse, switching impulse, HVAC, HVDC.Again due to using metal material conducting rod, adding
Work is convenient, high yield rate, so as to reduce production cost, improves cost performance.
Brief description of the drawings
Fig. 1 is the top view of embodiment 1.
Fig. 2 is Fig. 1 A-A sectional views.
Fig. 3 is the enlarged drawing of Fig. 2 bottom, the main connection reflected between first, second contact shoe, inside and outside conducting rod
Figure.
Fig. 4 is another connected mode of fingertip.
Fig. 5 is the enlarged drawing on Fig. 2 tops, the connection figure mainly reflected between cover plate, inside and outside conducting rod.
Fig. 6 is the view of embodiment 2
Mark in accompanying drawing is as follows：
1. first end daughter board, 2. Second terminal plates, 3. cover plates, 4. grading rings, 5. insulation crusts, conducting rod in 6., 7. is outer conductive
Bar, 8. flange cylinders, 9. insulating washers, 10. first contact shoes, 11. second contact shoes, 12. first guide rings, 13. first fingertips,
14. the second guide ring, 15. insulation sleeves, 16. sealing rings, 17. second fingertips, 18. first conducting rods, 19. second conducting rods,
20. contact shoe, 21. fingertips.
Embodiment
Embodiment 1
See Fig. 1 to Fig. 5, the present invention has insulation crust 5, and the insulation crust 5 of the present embodiment wraps up in silicon rubber in vitro using glass fibre reinforced plastic cylinder
Glue material is insulator.The upper and lower end of insulation crust 5 is connected to cover plate 3 and flange cylinder 8, and cover plate 3 is provided with through hole.This
In embodiment, flange cylinder 8 is both ends open and cylinder.
Interior conducting rod 6 is provided with insulation crust 5 and it is hollow outer conducting rod 7, inside and outside conducting rod is metal material,
Outer 7 sets of conducting rod has gap between the outside of interior conducting rod 6 and the coaxial inner conductor of inside and outside conducting rod 6, inside and outside conducting rod 6,7
D.The upper end of outer conducting rod 7 is connected with cover plate 3, and Second terminal plate 2 is fixed with cover plate 3.The upper end of interior conducting rod 6 is from cover plate
Stretched out in 3 through hole, the first end daughter board 1 supported by cover plate 3 is connected with its external part, between first end daughter board 1 and cover plate 3
Provided with the insulating washer 9 around interior conducting rod 6, sealing ring 16 is respectively embedded with the upper and lower end face of insulating washer 9, so as to ensure
Seal and insulate between one terminal board 1 and cover plate 3.In the present embodiment, outer conducting rod 7, cover plate 3, Second terminal plate 2 are one
, interior conducting rod 6 and first end daughter board 1 are integral.Here one can be integrally welded.
The lower end of outer conducting rod 7 is connected with the first contact shoe 10, and outer conducting rod 7 is stretched out in the lower end of interior conducting rod 6, and is stretching
Go out on end and be connected with the second contact shoe 11.Second contact shoe 11 is in the first contact shoe 10, and two contact shoes are with center line and stretch
Go out flange cylinder 8.The bottom of second contact shoe 11 is provided with the platform 11-1 extended to surrounding, and the bottom of the first contact shoe 10 is closed the
On the platform 11-1 of two contact shoes 10, the second contact shoe 11 and the first contact shoe 10, which are harmonious between face, is provided with insulation sleeve 15, makes
Insulated between two contact shoes 11 and the first contact shoe 10.By some first fingertips 13 between the outer contact shoe 10 of conducting rod 7 and first
Connection；Connected between the interior contact shoe 11 of conducting rod 6 and second by some second fingertips 17.First fingertip 13 is fixed on
On the inwall of one contact shoe 10（See Fig. 3）Or it is fixed on the outer wall of outer conducting rod 7（With reference to figure 4）, second fingertip 17 or
It is fixed on the inwall of the second contact shoe 11（See Fig. 3）Or it is fixed on the outer wall of interior conducting rod 6（See Fig. 4）.
Be provided with first contact shoe 10 and in the top of its fingertip 13 can by the first guide ring 12 of outer conducting rod 7, the
The second guide ring 14 of interior conducting rod 6 can be passed through by being provided with two contact shoes 11 and in the top of its fingertip 15.
Sleeve pipe is connected by flange cylinder 8 with transformer flange sealing, and the lead of transformer connects with corresponding contact shoe.Insulation
Filled with SF6 pressed gas in the inner chamber of shell 5, pressed gas can be entered in interior, conducting rod 6,7 clearance D, ensured interior, conductive
Insulation between bar.
The enclosing cover periphery of insulation crust 5 is provided with grading ring 4.
Embodiment 2
See Fig. 5 and Fig. 6, embodiment 2 has an insulation crust 5, the insulation crust 5 or wraps up in silastic material in vitro for glass fibre reinforced plastic cylinder
Or it is insulator.The upper and lower end of insulation crust 5 is connected to cover plate 3 and flange cylinder 8, and parallel first is provided with insulation crust 5
The conducting rod 19 of conducting rod 18 and second, cover plate 3 is provided with is more than first with 18 corresponding through hole of the first conducting rod, the aperture of through hole
The bar footpath of conducting rod 18, the upper end of the first conducting rod 18 are stretched out by the through hole on cover plate 3, are connected with its external part by cover plate 3
The first end daughter board 1 of support, first end daughter board 1 insulate with cover plate 3, are provided between first end daughter board 1 and cover plate 3 and surround interior conduction
The insulating washer 9 of bar 6, sealing ring 16 is respectively embedded with the upper and lower end face of insulating washer 9, so as to ensure first end daughter board 1 and cover plate
Seal and insulate between 3.The upper end of second conducting rod 19 is connected with cover plate 3, and Second terminal plate 2 is fixed with cover plate 3.First
The lower end of conducting rod 18 is connected with contact shoe 20, and the lower end of the second conducting rod 19 is equally connected with contact shoe 20, and first, second leads
Electric pole is respectively connected between contact shoe 20 by some fingertips 21, and fingertip 21 can be fixed on the inwall of contact shoe 20, fingertip 21
It can also be fixed on the outer wall of conducting rod.Two contact shoes 20 stretch out flange cylinder 8.Sleeve pipe passes through flange cylinder 8 and transformer method
Orchid is tightly connected, and the lead of transformer connects with corresponding contact shoe.Filled with SF6 pressed gas in the inner chamber S of insulation crust 5.
The enclosing cover periphery of insulation crust 5 is provided with grading ring 4.
Claims (10)
1. a kind of transformer passes in and out two-wire sleeve pipe, there is insulation crust（5）, it is characterised in that：Insulation crust（5）Upper and lower side is distinguished
It is connected with cover plate（3）And the flange cylinder being connected with transformer flange（8）, cover plate（3）It is provided with through hole, insulation crust（5）It is interior
Interior conducting rod provided with coaxial inner conductor（6）With cover in interior conducting rod（6）Outside hollow outer conducting rod（7）, inside and outside conducting rod it
Between insulate, outer conducting rod（7）Upper end and cover plate（3）It is connected, cover plate（3）On be fixed with Second terminal plate（2）, interior conducting rod
（6）Upper end from cover plate（3）Through hole in stretch out, be connected with its external part by cover plate（3）The first end daughter board of support（1）,
First end daughter board（1）With cover plate（3）Insulation, outer conducting rod（7）Lower end be connected with the first contact shoe（10）, outer conducting rod（7）
With the first contact shoe（10）Between by some first fingertips（13）Connection, interior conducting rod（6）Lower end stretch out outer conducting rod（7）,
Its lower end is connected with the second contact shoe（11）, interior conducting rod（6）With the second contact shoe（11）Between by some second fingertips（17）
Connection, the second contact shoe（11）In the first contact shoe（10）Interior and mutually insulated, insulation crust（5）Inner chamber（S）In filled with
SF6 pressed gas.
2. transformer according to claim 1 passes in and out two-wire sleeve pipe, it is characterised in that：First end daughter board（1）With cover plate（3）
Between be provided with surround interior conducting rod（6）Insulating washer（9）, insulating washer（9）Upper and lower end face on be respectively embedded with sealing ring
（16）.
3. transformer according to claim 1 passes in and out two-wire sleeve pipe, it is characterised in that：Second contact shoe（11）Bottom set
The platform of oriented surrounding extension（11-1）, the first contact shoe（10）Bottom close in the second contact shoe（11）Platform（11-1）
On, the second contact shoe（11）With the first contact shoe（10）It is harmonious between face and is provided with insulation sleeve（15）.
4. transformer according to claim 1 passes in and out two-wire sleeve pipe, it is characterised in that：The inside and outside conducting rod（6、7）It
Between be provided with gap（D）, SF6 gases enter gap（D）It is interior.
5. transformer according to claim 1 passes in and out two-wire sleeve pipe, it is characterised in that：First fingertip（13）It is or fixed
In the first contact shoe（10）Inwall on or be fixed on outer conducting rod（7）Outer wall on；Second fingertip（17）Or it is fixed on
Second contact shoe（11）Inwall on or be fixed on interior conducting rod（6）Outer wall on.
6. transformer according to claim 1 passes in and out two-wire sleeve pipe, it is characterised in that：The insulation crust（5）Or it is glass
Glass steel cylinder wraps up in silastic material outside or is insulator.
7. a kind of transformer passes in and out two-wire sleeve pipe, there is insulation crust（5）, it is characterised in that：Insulation crust（5）Upper and lower end
It is connected to cover plate（3）The flange cylinder being connected with transformer flange（8）, insulation crust（5）It is interior to be led provided with parallel first
Electric pole（18）With the second conducting rod（19）, cover plate（3）It is provided with and the first conducting rod（18）Corresponding through hole, the first conducting rod
（18）Upper end pass through cover plate（3）On through hole stretch out, be connected with by cover plate on its external part（3）The first end daughter board of support
（1）, first end daughter board（1）With cover plate（3）Insulation, the second conducting rod（19）Upper end and cover plate（3）It is connected, cover plate（3）On
It is fixed with Second terminal plate（2）, the first conducting rod（17）Lower end be connected with contact shoe（20）, the second conducting rod（19）Lower end
It is connected with contact shoe（20）, first, second conducting rod is respectively and contact shoe（20）Between by some fingertips（21）Connection, insulation crust
（5）Inner chamber（S）In filled with SF6 pressed gas.
8. transformer according to claim 7 passes in and out two-wire sleeve pipe, it is characterised in that：First end daughter board（1）With cover plate（3）
Between be provided with surround interior conducting rod（6）Insulating washer（9）, insulating washer（9）Upper and lower end face on be respectively embedded with sealing ring
（16）.
9. transformer according to claim 7 passes in and out two-wire sleeve pipe, it is characterised in that：The fingertip（21）Or it is fixed on and connects
Touch son（20）Inwall on or be fixed on the outer wall of conducting rod.
10. transformer according to claim 7 passes in and out two-wire sleeve pipe, it is characterised in that：The insulation crust（5）Or it is glass
Glass steel cylinder wraps up in silastic material outside or is insulator.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710708904.3A CN107424797B (en) | 2017-08-17 | 2017-08-17 | Double-wire sleeve for transformer |
| CN202311032129.6A CN117457342A (en) | 2017-08-17 | 2017-08-17 | Parallel double-guide-rod type transformer inlet and outlet double-wire sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710708904.3A CN107424797B (en) | 2017-08-17 | 2017-08-17 | Double-wire sleeve for transformer |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311032129.6A Division CN117457342A (en) | 2017-08-17 | 2017-08-17 | Parallel double-guide-rod type transformer inlet and outlet double-wire sleeve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107424797A true CN107424797A (en) | 2017-12-01 |
| CN107424797B CN107424797B (en) | 2023-09-15 |
Family
ID=60436974
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710708904.3A Active CN107424797B (en) | 2017-08-17 | 2017-08-17 | Double-wire sleeve for transformer |
| CN202311032129.6A Pending CN117457342A (en) | 2017-08-17 | 2017-08-17 | Parallel double-guide-rod type transformer inlet and outlet double-wire sleeve |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311032129.6A Pending CN117457342A (en) | 2017-08-17 | 2017-08-17 | Parallel double-guide-rod type transformer inlet and outlet double-wire sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN107424797B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2932588Y (en) * | 2006-03-28 | 2007-08-08 | 中电电气集团有限公司 | Integrated cable plug-in module of transformer |
| CN201444538U (en) * | 2009-06-09 | 2010-04-28 | 新东北电气(沈阳)高压开关有限公司 | Composite bushing |
| CN205016450U (en) * | 2015-08-18 | 2016-02-03 | 湖北华亿电气集团有限公司 | High -pressure vacuum circuit breaker on outdoor post |
| CN207217259U (en) * | 2017-08-17 | 2018-04-10 | 常州东芝变压器有限公司 | A kind of transformer passes in and out two-wire sleeve pipe |
-
2017
- 2017-08-17 CN CN201710708904.3A patent/CN107424797B/en active Active
- 2017-08-17 CN CN202311032129.6A patent/CN117457342A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2932588Y (en) * | 2006-03-28 | 2007-08-08 | 中电电气集团有限公司 | Integrated cable plug-in module of transformer |
| CN201444538U (en) * | 2009-06-09 | 2010-04-28 | 新东北电气(沈阳)高压开关有限公司 | Composite bushing |
| CN205016450U (en) * | 2015-08-18 | 2016-02-03 | 湖北华亿电气集团有限公司 | High -pressure vacuum circuit breaker on outdoor post |
| CN207217259U (en) * | 2017-08-17 | 2018-04-10 | 常州东芝变压器有限公司 | A kind of transformer passes in and out two-wire sleeve pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107424797B (en) | 2023-09-15 |
| CN117457342A (en) | 2024-01-26 |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 213002 Wuxing bridge, outer ring road, Zhonglou District, Changzhou City, Jiangsu Province Patentee after: Shandong Electric Group Changzhou Dongzhi Transformer Co.,Ltd. Country or region after: China Address before: 213002 Wuxing bridge, outer ring road, Zhonglou District, Changzhou City, Jiangsu Province Patentee before: CHANGZHOU TOSHIBA TRANSFORMER Co.,Ltd. Country or region before: China |
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| CP03 | Change of name, title or address |