CN204130317U - A kind of power transformer iron core post of high usage - Google Patents
A kind of power transformer iron core post of high usage Download PDFInfo
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- CN204130317U CN204130317U CN201420585827.9U CN201420585827U CN204130317U CN 204130317 U CN204130317 U CN 204130317U CN 201420585827 U CN201420585827 U CN 201420585827U CN 204130317 U CN204130317 U CN 204130317U
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- millimeters
- silicon steel
- steel sheet
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 33
- 229910000976 Electrical steel Inorganic materials 0.000 claims abstract description 139
- 239000003921 oil Substances 0.000 claims abstract description 27
- 238000004519 manufacturing process Methods 0.000 abstract description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052802 copper Inorganic materials 0.000 abstract description 5
- 239000010949 copper Substances 0.000 abstract description 5
- 230000005855 radiation Effects 0.000 abstract description 5
- 229910052742 iron Inorganic materials 0.000 abstract description 4
- 230000007423 decrease Effects 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000003475 lamination Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- Coils Of Transformers For General Uses (AREA)
Abstract
The utility model discloses a kind of power transformer iron core post of high usage, comprise 27 grades of silicon steel sheets stacked, the rectangular in cross-section of every grade of silicon steel sheet, axisymmetric in the circumscribed circle of the total cross section that the cross section of every grade of silicon steel sheet is formed at all silicon steel sheets, left and right also axial symmetry, the circumscribed circle diameter of its core limb is 450 millimeters, and it is 153725 square millimeters that its core limb geometric cross section is amassed, and its cross section utilance is 96.66%; The oil duct for dispelling the heat is provided with between tenth secondary silicon steel sheet and the 13 grade of silicon steel sheet, between the tenth Pyatyi silicon steel sheet and the 16 grade of silicon steel sheet.The net sectional area of the power transformer iron core post of this high usage is more excellent, and the utilance of pair cross-section is higher, and manufacturing cost unshakable in one's determination is lower, and have the design of better heat radiation oil duct, its thermal diffusivity is better, and decreases the copper loss and iron loss that cause because of heating better.
Description
Technical field
The utility model relates to the technical field of power transformer, especially a kind of power transformer iron core post of high usage.
Background technology
For power transformer, iron core is important part, and it is the flux circuit of transformer, is again the supporting core of transformer.The iron core of power transformer is shaped as frame closing structure, and the part of wherein overlapping winding is core limb.Iron core has core type and the large basic structure form of shell-type two, and wherein, core type core structure is the core construction form that transformer manufacturing factory of China generally adopts.
In the design of power transformer, how the cross section of core limb is designed is a very important link.The design drawing of the core type core structure that China's transformer manufacturing industry adopts the whole nation unified usually.Can, according to knowhow for many years, each factory also exists the query to existing design: improve and how to improve these designs, both could improve result of use, can reduce again the cost of transformer simultaneously.
The area of core limb effective cross-section, equals that the geometric cross section of multistage core limb is long-pending is multiplied by lamination coefficient, and lamination coefficient is a constant.Wish during design that effective cross-section is as far as possible large, so both can save material, and can energy loss be reduced again.But not only consider that effective cross-section is maximum, also should consider the requirement of manufacturing process, could apply in practice well like this, just can be promoted better.In addition, because copper conductor can generate heat when electric current flows through cause copper loss, unshakable in one's determination the magnetic line of force by time can generate heat and cause iron loss.So, in order to improve inner heat radiation unshakable in one's determination, when core limb diameter is more than 380 millimeters, must cooling oil duct be set.Briefly, between some adjacent steps shape, leave the horizontal blanking of 6 millimeters thick exactly, in space, be full of oil, the oily heat taken away in iron core that circulates up and down during transformer work.Concrete oil duct number is chosen by industrial requirements, adjacent two parts core limb sectional area approximately equal that the position of the oil duct of design should make it split.
Circumscribed circle diameter is the power transformer iron core post of 450 millimeters is current utilization a kind of power transformer iron core post comparatively widely, has very wide application prospect.But also there is many defects in the design of its core limb cross-sectional configuration, the design of its cross-sectional configuration is desirable not enough, net sectional area is large not enough, the minimizing that is low not enough, energy loss of high not enough, the unshakable in one's determination manufacturing cost of circular section utilance is many not enough, thermal diffusivity process is good not enough.
At present, for the power transformer iron core post that circumscribed circle diameter is 450 millimeters, the standard Core Design layout design that the whole nation adopted by China's transformer manufacturing industry is unified, its activity coefficient unshakable in one's determination (circular section usage factor) is only about 93%, its utilance is high not enough, can not optimize effective cross-section well, can not reduce manufacturing cost unshakable in one's determination well; Because the net sectional area of core limb is large not, circular section utilance is high not enough, so energy loss can not be reduced well, some does not just design oil duct at all simultaneously, or the oil duct of some design makes the degree of approximation of adjacent sections not high enough, or do not take into full account thermal diffusivity, its result of use is not also fine.
Summary of the invention
The utility model is solve the problems of the technologies described above the power transformer iron core post providing a kind of high usage with new type section structure, be specially adapted to the power transformer iron core post that circumscribed circle diameter is 450 millimeters, its net sectional area is more excellent, utilance is higher, manufacturing cost unshakable in one's determination is lower, to reduce energy loss more and have the new type section structure of the power transformer iron core post of the advantages such as thermal diffusivity preferably.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is:
A kind of power transformer iron core post of high usage, it is characterized in that: comprise 27 grades of silicon steel sheets stacked, the rectangular in cross-section of every grade of silicon steel sheet, axisymmetric in the circumscribed circle of the total cross section that the cross section of every grade of silicon steel sheet is formed at all silicon steel sheets, left and right also axial symmetry, the circumscribed circle diameter of its core limb is 450 millimeters, and it is 153725 square millimeters that its core limb geometric cross section is amassed, and its cross section utilance is 96.66%; The oil duct for dispelling the heat is provided with between tenth secondary silicon steel sheet and the 13 grade of silicon steel sheet, between the tenth Pyatyi silicon steel sheet and the 16 grade of silicon steel sheet.
Arrange between described tenth secondary silicon steel sheet and the 13 grade of silicon steel sheet to be wide be 420 millimeters, thick be the oil duct of 6 millimeters; Arrange between tenth Pyatyi silicon steel sheet and the 16 grade of silicon steel sheet to be wide be 420 millimeters, thick be the oil duct of 6 millimeters.
The total cross section of 27 grades of silicon steel sheets is divided into three sub-cross sections by two set oil ducts, and the area approximation in three sub-cross sections is equal.
The specification of described 27 grades of silicon steel sheets is followed successively by:
The first order to be wide be 75 millimeters, thick be the silicon steel sheet of 6.4464 millimeters;
To be wide be in the second level 130 millimeters, thick be the silicon steel sheet of 8.1175 millimeters;
The third level to be wide be 175 millimeters, thick be the silicon steel sheet of 9.6309 millimeters;
The fourth stage to be loose be 215 millimeters, thick be the silicon steel sheet of 10.5753 millimeters;
Level V to be wide be 250 millimeters, thick be the silicon steel sheet of 10.9437 millimeters;
6th grade to be wide be 280 millimeters, thick be the silicon steel sheet of 13.0441 millimeters;
7th grade to be wide be 310 millimeters, thick be the silicon steel sheet of 12.8661 millimeters;
8th grade to be wide be 335 millimeters, thick be the silicon steel sheet of 15.229 millimeters;
9th grade to be wide be 360 millimeters, thick be the silicon steel sheet of 14.4803 millimeters;
Tenth grade to be wide be 380 millimeters, thick be the silicon steel sheet of 17.4421 millimeters;
Tenth one-level to be wide be 400 millimeters, thick be the silicon steel sheet of 22.3002 millimeters;
Tenth secondary be for 420 millimeters, thick be the silicon steel sheet of 23.1689 millimeters;
13 grade to be wide be 435 millimeters, thick be the silicon steel sheet of 24.16085 millimeters;
Tenth level Four to be wide be 445 millimeters, thick be the silicon steel sheet of 66.8954 millimeters;
Tenth Pyatyi to be wide be 435 millimeters, thick be the silicon steel sheet of 24.16085 millimeters;
16 grade to be wide be 420 millimeters, thick be the silicon steel sheet of 23.1689 millimeters;
17 grade to be wide be 400 millimeters, thick be the silicon steel sheet of 22.3002 millimeters;
18 grade to be wide be 380 millimeters, thick be the silicon steel sheet of 17.4421 millimeters;
19 grade to be wide be 360 millimeters, thick be the silicon steel sheet of 14.4803 millimeters;
20 grade to be wide be 335 millimeters, thick be the silicon steel sheet of 15.229 millimeters;
20 one-level to be wide be 310 millimeters, thick be the silicon steel sheet of 12.8661 millimeters;
20 secondary to be wide be 280 millimeters, thick be the silicon steel sheet of 13.0441 millimeters;
23 grade to be wide be 250 millimeters, thick be the silicon steel sheet of 10.9437 millimeters;
20 level Four to be wide be 215 millimeters, thick be the silicon steel sheet of 10.5753 millimeters;
20 Pyatyi to be wide be 175 millimeters, thick be the silicon steel sheet of 9.6309 millimeters;
26 grade to be wide be 130 millimeters, thick be the silicon steel sheet of 8.1175 millimeters;
27 grade to be wide be 75 millimeters, thick be the silicon steel sheet of 6.4464 millimeters.
The cross section of every grade of silicon steel sheet is symmetrical arranged along the cross section of the tenth level Four silicon steel sheet.
The beneficial effects of the utility model are:
The utility model have devised a kind of power transformer iron core post simultaneously with the high usage that net sectional area is more excellent, effect of optimization better, cross section utilance is higher; Axisymmetric in the circumscribed circle of the total cross section that the cross section of every grade of silicon steel sheet is formed at all silicon steel sheets, left and right also axial symmetry, it is 153725 square millimeters that its core limb geometric cross section is amassed, its cross section utilance is 96.66%, about 3.66% is improve than the design of using in current industrial manufacture, and more attractive in appearance; The advantages such as manufacturing cost unshakable in one's determination is lower, minimizing energy loss is more; Have better heat radiation oil duct to design, adjacent two parts core limb sectional area approximately equal degree that oil duct can be made to split is higher, thus makes its thermal diffusivity better, and decreases the copper loss and iron loss that cause because of heating better.
Accompanying drawing explanation
Fig. 1 is the structural representation of the power transformer iron core post of the utility model high usage.
Embodiment
As shown in Figure 1, a kind of power transformer iron core post of high usage, it is characterized in that: comprise 27 grades of silicon steel sheets stacked, the rectangular in cross-section of every grade of silicon steel sheet, upper axisymmetric in the circumscribed circle (29) of the total cross section that the cross section of every grade of silicon steel sheet is formed at all silicon steel sheets, left and right is axial symmetry also, and circumscribed circle (29) diameter of its core limb is 450 millimeters, it is 153725 square millimeters that its core limb geometric cross section is amassed, and its cross section utilance is 96.66%; The oil duct (28) for dispelling the heat is provided with between tenth secondary silicon steel sheet (12) and the 13 grade of silicon steel sheet (13), between the tenth Pyatyi silicon steel sheet (15) and the 16 grade of silicon steel sheet (16).
Arrange between described tenth secondary silicon steel sheet and the 13 grade of silicon steel sheet to be wide be 420 millimeters, thick be the oil duct (28) of 6 millimeters; Arrange between tenth Pyatyi silicon steel sheet and the 16 grade of silicon steel sheet to be wide be 420 millimeters, thick be the oil duct (28) of 6 millimeters.
The total cross section of 27 grades of silicon steel sheets is divided into three sub-cross sections by two set oil ducts (28), and the area approximation in three sub-cross sections is equal.
The power transformer iron core column section of 27 grades of silicon steel sheet formation is divided into 27 grades, is followed successively by the first order, the second level, the third level ... 27 grade, wherein:
The first order to be wide be 75 millimeters, thick be the silicon steel sheet (1) of 6.4464 millimeters;
To be wide be in the second level 130 millimeters, thick be the silicon steel sheet (2) of 8.1175 millimeters;
The third level to be wide be 175 millimeters, thick be the silicon steel sheet (3) of 9.6309 millimeters;
The fourth stage to be loose be 215 millimeters, thick be the silicon steel sheet (4) of 10.5753 millimeters;
Level V to be wide be 250 millimeters, thick be the silicon steel sheet (5) of 10.9437 millimeters;
6th grade to be wide be 280 millimeters, thick be the silicon steel sheet (6) of 13.0441 millimeters;
7th grade to be wide be 310 millimeters, thick be the silicon steel sheet (7) of 12.8661 millimeters;
8th grade to be wide be 335 millimeters, thick be the silicon steel sheet (8) of 15.229 millimeters;
9th grade to be wide be 360 millimeters, thick be the silicon steel sheet (9) of 14.4803 millimeters;
Tenth grade to be wide be 380 millimeters, thick be the silicon steel sheet (10) of 17.4421 millimeters;
Tenth one-level to be wide be 400 millimeters, thick be the silicon steel sheet (11) of 22.3002 millimeters;
Tenth secondary be for 420 millimeters, thick be the silicon steel sheet (12) of 23.1689 millimeters;
Insert above the tenth secondary wide be 420 millimeters, thick be the oil duct (28) of 6 millimeters, for heat radiation;
13 grade to be wide be 435 millimeters, thick be the silicon steel sheet (13) of 24.16085 millimeters;
Tenth level Four to be wide be 445 millimeters, thick be the silicon steel sheet (14) of 66.8954 millimeters;
Tenth Pyatyi to be wide be 435 millimeters, thick be the silicon steel sheet (15) of 24.16085 millimeters;
Insert above the tenth Pyatyi wide be 420 millimeters, thick be the oil duct (28) of 6 millimeters, for heat radiation;
16 grade to be wide be 420 millimeters, thick be the silicon steel sheet (16) of 23.1689 millimeters;
17 grade to be wide be 400 millimeters, thick be the silicon steel sheet (17) of 22.3002 millimeters;
18 grade to be wide be 380 millimeters, thick be the silicon steel sheet (18) of 17.4421 millimeters;
19 grade to be wide be 360 millimeters, thick be the silicon steel sheet (19) of 14.4803 millimeters;
20 grade to be wide be 335 millimeters, thick be the silicon steel sheet (20) of 15.229 millimeters;
20 one-level to be wide be 310 millimeters, thick be the silicon steel sheet (21) of 12.8661 millimeters;
20 secondary to be wide be 280 millimeters, thick be the silicon steel sheet (22) of 13.0441 millimeters;
23 grade to be wide be 250 millimeters, thick be the silicon steel sheet (23) of 10.9437 millimeters;
20 level Four to be wide be 215 millimeters, thick be the silicon steel sheet (24) of 10.5753 millimeters;
20 Pyatyi to be wide be 175 millimeters, thick be the silicon steel sheet (25) of 9.6309 millimeters;
26 grade to be wide be 130 millimeters, thick be the silicon steel sheet (26) of 8.1175 millimeters;
27 grade to be wide be 75 millimeters, thick be the silicon steel sheet (27) of 6.4464 millimeters.
After lamination stacks, installation is carried out to core limb fastening.
The cross section of every grade of silicon steel sheet is symmetrical arranged along the cross section of the tenth level Four silicon steel sheet (14).
The maximum of core limb geometric cross section of the present utility model long-pending (containing oil duct) can reach 153725 square millimeters, and circular section usage factor can reach 96.66%, improves about 3.66% than the design of using in current industrial manufacture.In addition, this design considers thermal diffusivity and has carried out better oil duct design to it, and adjacent two parts core limb sectional area approximately equal degree that oil duct is split is higher, thus makes its thermal diffusivity better, and decreases the copper loss and iron loss that cause because of heating better.Meanwhile, this design contemplates the requirement of manufacturing process, has very strong practicality.
Claims (5)
1. the power transformer iron core post of a high usage, it is characterized in that: comprise 27 grades of silicon steel sheets stacked, the rectangular in cross-section of every grade of silicon steel sheet, upper axisymmetric in the circumscribed circle (29) of the total cross section that the cross section of every grade of silicon steel sheet is formed at all silicon steel sheets, left and right also axial symmetry, circumscribed circle (29) diameter of its core limb is 450 millimeters, and it is 153725 square millimeters that its core limb geometric cross section is amassed, and its cross section utilance is 96.66%; The oil duct (28) for dispelling the heat is provided with between tenth secondary silicon steel sheet (12) and the 13 grade of silicon steel sheet (13), between the tenth Pyatyi silicon steel sheet (15) and the 16 grade of silicon steel sheet (16).
2. the power transformer iron core post of a kind of high usage according to claim 1, is characterized in that: arrange between described tenth secondary silicon steel sheet and the 13 grade of silicon steel sheet to be wide be 420 millimeters, thick be the oil duct (28) of 6 millimeters; Arrange between tenth Pyatyi silicon steel sheet and the 16 grade of silicon steel sheet to be wide be 420 millimeters, thick be the oil duct (28) of 6 millimeters.
3. the power transformer iron core post of a kind of high usage according to claim 1 and 2, is characterized in that: the total cross section of 27 grades of silicon steel sheets is divided into three sub-cross sections by two set oil ducts (28), and the area approximation in three sub-cross sections is equal.
4. the power transformer iron core post of a kind of high usage according to claim 1 and 2, is characterized in that: the specification of described 27 grades of silicon steel sheets is followed successively by:
The first order to be wide be 75 millimeters, thick be the silicon steel sheet (1) of 6.4464 millimeters;
To be wide be in the second level 130 millimeters, thick be the silicon steel sheet (2) of 8.1175 millimeters;
The third level to be wide be 175 millimeters, thick be the silicon steel sheet (3) of 9.6309 millimeters;
The fourth stage to be loose be 215 millimeters, thick be the silicon steel sheet (4) of 10.5753 millimeters;
Level V to be wide be 250 millimeters, thick be the silicon steel sheet (5) of 10.9437 millimeters;
6th grade to be wide be 280 millimeters, thick be the silicon steel sheet (6) of 13.0441 millimeters;
7th grade to be wide be 310 millimeters, thick be the silicon steel sheet (7) of 12.8661 millimeters;
8th grade to be wide be 335 millimeters, thick be the silicon steel sheet (8) of 15.229 millimeters;
9th grade to be wide be 360 millimeters, thick be the silicon steel sheet (9) of 14.4803 millimeters;
Tenth grade to be wide be 380 millimeters, thick be the silicon steel sheet (10) of 17.4421 millimeters;
Tenth one-level to be wide be 400 millimeters, thick be the silicon steel sheet (11) of 22.3002 millimeters;
Tenth secondary be for 420 millimeters, thick be the silicon steel sheet (12) of 23.1689 millimeters;
13 grade to be wide be 435 millimeters, thick be the silicon steel sheet (13) of 24.16085 millimeters;
Tenth level Four to be wide be 445 millimeters, thick be the silicon steel sheet (14) of 66.8954 millimeters;
Tenth Pyatyi to be wide be 435 millimeters, thick be the silicon steel sheet (15) of 24.16085 millimeters;
16 grade to be wide be 420 millimeters, thick be the silicon steel sheet (16) of 23.1689 millimeters;
17 grade to be wide be 400 millimeters, thick be the silicon steel sheet (17) of 22.3002 millimeters;
18 grade to be wide be 380 millimeters, thick be the silicon steel sheet (18) of 17.4421 millimeters;
19 grade to be wide be 360 millimeters, thick be the silicon steel sheet (19) of 14.4803 millimeters;
20 grade to be wide be 335 millimeters, thick be the silicon steel sheet (20) of 15.229 millimeters;
20 one-level to be wide be 310 millimeters, thick be the silicon steel sheet (21) of 12.8661 millimeters;
20 secondary to be wide be 280 millimeters, thick be the silicon steel sheet (22) of 13.0441 millimeters;
23 grade to be wide be 250 millimeters, thick be the silicon steel sheet (23) of 10.9437 millimeters;
20 level Four to be wide be 215 millimeters, thick be the silicon steel sheet (24) of 10.5753 millimeters;
20 Pyatyi to be wide be 175 millimeters, thick be the silicon steel sheet (25) of 9.6309 millimeters;
26 grade to be wide be 130 millimeters, thick be the silicon steel sheet (26) of 8.1175 millimeters;
27 grade to be wide be 75 millimeters, thick be the silicon steel sheet (27) of 6.4464 millimeters.
5. the power transformer iron core post of a kind of high usage according to claim 1 and 2, is characterized in that: the cross section of every grade of silicon steel sheet is symmetrical arranged along the cross section of the tenth level Four silicon steel sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420585827.9U CN204130317U (en) | 2014-10-07 | 2014-10-07 | A kind of power transformer iron core post of high usage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420585827.9U CN204130317U (en) | 2014-10-07 | 2014-10-07 | A kind of power transformer iron core post of high usage |
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| Publication Number | Publication Date |
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| CN204130317U true CN204130317U (en) | 2015-01-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420585827.9U Expired - Fee Related CN204130317U (en) | 2014-10-07 | 2014-10-07 | A kind of power transformer iron core post of high usage |
Country Status (1)
| Country | Link |
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| CN (1) | CN204130317U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105428032A (en) * | 2015-12-28 | 2016-03-23 | 保定天威保变电气股份有限公司 | Self-shielding leakage flux anti-overheating iron core |
-
2014
- 2014-10-07 CN CN201420585827.9U patent/CN204130317U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105428032A (en) * | 2015-12-28 | 2016-03-23 | 保定天威保变电气股份有限公司 | Self-shielding leakage flux anti-overheating iron core |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: WANGWEI ELECTRICAL (PIZHOU) CO., LTD. Free format text: FORMER OWNER: SHI YONGLI Effective date: 20150525 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhang Wei Inventor before: Shi Yongli Inventor before: Jiang Heping Inventor before: Wang Gang |
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| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 400055 BANAN, CHONGQING TO: 221300 XUZHOU, JIANGSU PROVINCE Free format text: CORRECT: INVENTOR; FROM: SHI YONGLI JIANG HEPING WANG GANG TO: ZHANG WEI |
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| TR01 | Transfer of patent right |
Effective date of registration: 20150525 Address after: Ring Road North, Pizhou City, Jiangsu province 221300 Hongqi Road Xuzhou City Economic Development Zone on the west side Patentee after: Electric (Pizhou) Co., Ltd. Address before: 400055 Banan District, Chongqing flower Bay No. 5, attached No. 7 Patentee before: Shi Yongli |
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| C41 | Transfer of patent application or patent right or utility model | ||
| CB03 | Change of inventor or designer information |
Inventor after: Huang Wei Inventor before: Zhang Wei |
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| COR | Change of bibliographic data | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20161227 Address after: 221300 Jiangsu Province Economic Development Zone Pizhou City Ring Road and Hongqi Road intersection Patentee after: Electro mechanical (Pizhou) Co., Ltd. Address before: Ring Road North, Pizhou City, Jiangsu province 221300 Hongqi Road Xuzhou City Economic Development Zone on the west side Patentee before: Electric (Pizhou) Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150128 Termination date: 20181007 |