CN201741623U - Outdoor high-voltage intelligent permanent magnetic vacuum switch - Google Patents
Outdoor high-voltage intelligent permanent magnetic vacuum switch Download PDFInfo
- Publication number
- CN201741623U CN201741623U CN2010202470795U CN201020247079U CN201741623U CN 201741623 U CN201741623 U CN 201741623U CN 2010202470795 U CN2010202470795 U CN 2010202470795U CN 201020247079 U CN201020247079 U CN 201020247079U CN 201741623 U CN201741623 U CN 201741623U
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- Prior art keywords
- insulating sleeve
- permanent magnet
- magnet mechanism
- switch
- permanent magnetic
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- 230000007246 mechanism Effects 0.000 claims abstract description 45
- 230000005389 magnetism Effects 0.000 claims description 16
- 230000003068 static effect Effects 0.000 abstract description 2
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- 238000013461 design Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000004146 energy storage Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 238000010338 mechanical breakdown Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
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- 238000007906 compression Methods 0.000 description 2
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- 238000005070 sampling Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
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- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The utility model relates to an outdoor high-voltage intelligent permanent magnetic vacuum switch, comprising an insulating sleeve (7) and an electric cabinet box (3), a central through hole of the insulating sleeve (7) is internally provided with a vacuum arc extinguish chamber (12), a static conducting block (11), a movable conducting block (6) and an insulating pull rod (5), wherein the controller power supply CT (9) and a CT (10) for protection are poured at the periphery of a lower line-outgoing terminal (8) at the inner side of the insulating sleeve (7) so as to be connected with the insulating sleeve (7) into a whole; three sets of structures of the insulating sleeve (7), a permanent magnetic mechanism (2) and a vacuum arc extinguish chamber (12) are fixed on the electric cabinet box (3); and the lower ends of permanent magnetic mechanism power output shafts (4) of the three sets of mechanisms are respectively contacted with a main shaft (14) of the electric cabinet box. The utility model provides an integrally-designed high-voltage intelligent permanent magnetic vacuum switch which adopts a monostable permanent magnetic braking mechanism, and can realize fast three-section type current protection and does not need an external power supply.
Description
Technical field
The utility model relates to a kind of permanent magnetism vacuum switch, and more particularly it is the intelligent permanent magnetism vacuum switch of a kind of outdoor high-voltage.
Background technology
Because the R﹠D direction of bistable structure as vacuum switch selected by some international famous big company that early enters Chinese market, this has especially played guiding function to the domestic manufacturing enterprise of China to a certain extent to Chinese market.Today, the seen independently developed permanent magnetism vacuum switch of Chinese Enterprise mostly was bistable structure or monostable single coil structure.The fault statistics of vacuum switch the analysis showed that 75% switch fault is a mechanical breakdown at present.And most bi-stable permanent magnetism operating mechanism vacuum switches are the same with the traditional vacuum switch, must use the threephase switch of band driving member actuating; Just replaced spring mechanism with permanent magnet mechanism on arrangements of elements, transmission mechanisms such as connecting lever and connecting rod are cancellation not, can't realize complete rectilinear motion, therefore can not eliminate the generation of mechanical breakdown comprehensively.Simultaneously normal employing of its operating power needs external power source or adopts solar energy, if adopt the CT power supply, use be that CT is used in protection, like this, just influenced defencive function, cause incorrect switching easily, influence the safe operation of electric power system.
Traditional voltage feeder automation pattern generally adopts automatic circuit scheme and voltage-time type sectionalizer scheme.Though it is simple that these two kinds of patterns have equipment disposition, the characteristics that the isolated fault success rate is high have following tangible drawback:
(1) each fault all can cause feeder line outlet switch trip.
(2) can not dwindle power supply interrupted district, non-faulty section also can cause power failure.
(3) isolated fault need feeder line go out wiretap repeatedly separating brake, close a floodgate to cooperate, cause non-fault zone repeatedly repeat have a power failure.
(4) the isolated fault required time is long, the combined floodgate segmentation on-load switch of need delaying time piecemeal.
For to extend the overhead feeder of radial pattern naturally, have many branch lines on the backbone, branch line extends many subbranch lines again, the line construction complexity, and the permanent each time or transient fault on the branch line can cause that all full bar feeder line has a power failure, coverage is bigger, and therefore traditional voltage feeder automation pattern can not satisfy the intelligentized development need of distribution.
The utility model content
The purpose of this utility model is in order to overcome the weak point of above-mentioned background technology, and provides a kind of outdoor high-voltage intelligent permanent magnetism vacuum switch.It adopts monostable twin coil permanent magnetism brake mechanism, can realize quick syllogic current protection, and does not need the integrated design high voltage permanent vacuum switch of external power supply.
The purpose of this utility model reaches by following measure: the intelligent permanent magnetism vacuum switch of outdoor high-voltage; it is characterized in that it comprises insulating sleeve and switch cabinet; be provided with vacuum interrupter in the center through hole of insulating sleeve; quiet conducting block; moving conductive piece and insulated tension pole; one end of the last outlet terminal of vacuum interrupter upper end stretches out insulating sleeve; one end of lower wire end that quiet conducting block side protrudes stretches out insulating sleeve; the insulating sleeve lower end links to each other with permanent magnet mechanism in the switch cabinet; also be provided with controller power source CT and protection CT in the described insulating sleeve; described controller power source CT and protection are cast in the periphery of inboard lower wire end of insulating sleeve with CT; fuse with insulating sleeve; described insulating sleeve; the structure of permanent magnet mechanism and vacuum interrupter is fixed three covers on switch cabinet, the permanent magnet mechanism power output shaft lower end of three cover mechanisms all contacts with the switch cabinet main shaft.
In technique scheme, described permanent magnet mechanism links to each other with the insulating sleeve lower end by the permanent magnet mechanism power output shaft.
In technique scheme, also be provided with the manual brake separating bar in the described switch cabinet, described manual brake separating bar is in tilted layout below permanent magnet mechanism.
In technique scheme; it also comprises power module; A/D converter; digital information processor and output circuit, described system device power supply CT is connected with power module, and protection is connected with A/D converter with CT; output circuit is connected with permanent magnet mechanism; power module respectively with A/D converter, digital information processor is connected with output circuit, digital information processor is between A/D converter and output circuit and be connected with output circuit with A/D converter respectively.
The utility model is for adapting to the intelligent permanent magnetism vacuum switch of 10kV outdoor high-voltage a kind of of new generation that intelligent grid self-healing function demand designs, can be used for the on-pole switch that main transformer 10kV side switch, transformer and distribution power station 10kV go out wiretap and power distribution network, also can be applicable to industrial and mining enterprises' distribution system.Can realize easily measuring, protect, control and communicate by letter, be the preferred unit of realizing the intelligent power distribution net.The utility model relates to the monostable twin coil permanent-magnet operating mechanism of employing, can realize quick syllogic current protection, does not need the integrated design high voltage permanent vacuum switch of external power supply; Permanent-magnet manipulating mechanism combines with protecting controller fast, and operate time is short; Insulation crust adopts the vacuum insulation pouring technology, and switch cabinet and operation control box body all adopt stainless steel to make Maintenance free; The remote controller that is equipped with the band Chinese character to show simultaneously can carry out straighforward operation.
Description of drawings
Fig. 1 is the structural representation of single cover operating mechanism in the utility model.
Fig. 2 is the structural representation of the intelligent permanent magnetism vacuum switch of the utility model outdoor high-voltage.
Fig. 3 is the block diagram of intelligent control part in the utility model.
1. manual brake separating bars, 2. permanent magnet mechanism, 3. switch cabinet among the figure; 4. permanent magnet mechanism power output shaft, 5. insulated tension pole, 6. moving conductive piece; 7. insulating sleeve, 8. lower wire end, 9. controller power source CT; 10. protect and use CT, 11. quiet conducting blocks, 12. vacuum interrupters; 13. last outlet terminal, 14. switch cabinet main shafts, 15. power modules; 16. A/D converter, 17. digital information processor, 18. output circuits.
Embodiment
Describe performance of the present utility model in detail below in conjunction with accompanying drawing, but they do not constitute to qualification of the present utility model, only do for example.Simultaneously by illustrating that advantage of the present utility model will become clear more and understanding easily.
Consult accompanying drawing as can be known: the intelligent permanent magnetism vacuum switch of the utility model outdoor high-voltage; it is characterized in that it comprises insulating sleeve 7 and switch cabinet 3; be provided with vacuum interrupter 12 in the center through hole of insulating sleeve 7; quiet conducting block 11; moving conductive piece 6 and insulated tension pole 5; one end of the last outlet terminal 13 of vacuum interrupter 12 upper ends stretches out insulating sleeve 7; one end of lower wire end 8 that quiet conducting block 11 sides protrude stretches out insulating sleeve 7; permanent magnet mechanism 2 in insulating sleeve 7 lower ends and the switch cabinet 3 links to each other; also be provided with controller power source CT9 and protection CT10 in the described insulating sleeve 7; described controller power source CT9 and protection are cast in the periphery of insulating sleeve 7 inboard lower wire end 8 with CT10; fuse with insulating sleeve 7; described insulating sleeve 7; the structure of permanent magnet mechanism 2 and vacuum interrupter 12 is fixed three covers on switch cabinet 3, permanent magnet mechanism power output shaft 4 lower ends of three cover mechanisms all contact (as Fig. 1 with switch cabinet main shaft 14; shown in Figure 2).
It also comprises power module 15; A/D converter 16; digital information processor 17 and output circuit 18; described controller power source CT9 is connected with power module 15; protection is connected with A/D converter 16 with CT10; output circuit 18 is connected with permanent magnet mechanism 2; power module 15 respectively with A/D converter 16; digital information processor 17 is connected with output circuit 18, and digital information processor 17 is between A/D converter 16 and output circuit 18 and be connected (as shown in Figure 3) with A/D converter 16 with output circuit 18 respectively.
The utlity model has following characteristics: (1) adopts monostable twin coil permanent magnetism vacuum mechanism as executive component, and employing three-phase independent agency, most of mechanical connecting element between independent agency and the vacuum interrupter has been removed, by permanent-magnet operating mechanism motion guide rod with link to each other with insulated tension pole, finish the breaking-closing operating of switch, only surplus next movable part, have up to a hundred movable parts at least with respect to traditional bistable switch, it has almost significantly reduced the possibility that produces mechanical breakdown.Simultaneously, owing to adopted twin coil, power supply to need not the commutation operation, improved the reliability of power supply.
(2) the utility model can adopt unique two CT designs mutually any one, and wherein as protection usefulness, controller power source CT9 is a controller power source with CT10 in protection, all disposable being cast in the insulating sleeve 7, and dispense with outer connecting power just can be realized electric operating.The utility model optional solar-energy photo-voltaic cell of while (or its combination) is as operating power.
(3) the utility model adopts rapid data collection and processing unit, adopts the sampling of digital information processor 17 and A/D converter 16 high-speed synchronous, has the ability of quick disjunction fault current, can isolate distribution fault fast, avoids the upper level switch trip.The utility model adopts advanced permanent-magnet manipulating mechanism to combine with novel quick protection controller; operate time is short; from the appearance of fault current to switch disjunction fault current; operate time is only about 20ms; broken through the notion that switch in the traditional concept can't replace fuse; can realize instantaneous fast tripping protection, in limited time fast tripping protection, regularly overcurrent protection, one-phase ground protection and automatic reclosing.
(4) the utility model is the intelligent switch of new generation that designs in order to adapt to intelligent grid self-healing function demand, insulation crust adopts the vacuum insulation pouring technology, the intensity height, are-tight ability is strong, have good anti-aging characteristic, compliance with environmental protection requirements, switch cabinet and operation control box body all adopt stainless steel to make, Maintenance free
(5) remote controller that is equipped with the band Chinese character to show need not can be operated by upper boom.The utility model can be realized easily measuring, protects, controls and communicate by letter, and is the preferred unit of realizing the intelligent power distribution net.
Brief description operating process of the present utility model:
(1) closing operation
In the separating brake position, the moving contact of vacuum interrupter 12 remains on the separating brake position by the tripping spring that is connected with insulated tension pole 5.When needing to carry out closing operation, energy storage capacitor injects a pulse current in the output circuit 18 in permanent magnet mechanism 2 coils, after the dynamic/static contact contact, and moving contact stop motion, but moving motion 2～3mm, the compression spring of compression contacts of continuing unshakable in one's determination.Realize snap close by magnetic force between moving iron core and the yoke, when the coil current that closing position cut-out output circuit 18 sends, moving iron core remains on closing position.Moving iron core makes the tripping spring energy storage when moving, for next sub-switching operation is got ready.
(2) sub-switching operation
During sub-switching operation, the energy storage capacitor of output circuit 18 injects a reverse impulse electric current to permanent magnet mechanism 2 coils.This electric current produces the part demagnetizing action to the magnetic material at mechanism center, reduced closing retention force, at this moment the opposite force of the tripping spring of energy storage and contact pressure spring makes unshakable in one's determination release, and to the accelerated motion of separating brake direction, final tripping spring remains on the separating brake position.
(3) operation principle of intelligent control part is as follows: protection is carried out synchronized sampling and AD conversion with the three-phase current signal of CT10 output through A/D converter 16; give digital information processor 17 after changing the digital simulation amount into; in digital information processor 17, finish quick protection algorithm; if satisfy the protection operation condition; then send trip command to permanent magnet mechanism 2, realize the quick isolation of electric network fault by output circuit 18.Controller power source CT9 provide power supply to power module, and power module 15 converts alternating current to work device needed dc supply, and respectively to A/D converter 16, digital information processor 17 and output circuit 18 power supplies.
The part of not describing in this specification is existing technology.
Claims (4)
1. the intelligent permanent magnetism vacuum switch of outdoor high-voltage; it is characterized in that it comprises insulating sleeve (7) and switch cabinet (3); be provided with vacuum interrupter (12) in the center through hole of insulating sleeve (7); quiet conducting block (11); moving conductive piece (6) and insulated tension pole (5); one end of the last outlet terminal (13) of vacuum interrupter (12) upper end stretches out insulating sleeve (7); one end of lower wire end (8) that quiet conducting block (11) side protrudes stretches out insulating sleeve (7); permanent magnet mechanism (2) in insulating sleeve (7) lower end and the switch cabinet (3) links to each other; also be provided with controller power source CT (9) and protection CT (10) in the described insulating sleeve (7); described controller power source CT (9) and protection are cast in the periphery of inboard lower wire end of insulating sleeve (7) (8) with CT (10); fuse with insulating sleeve (7); described insulating sleeve (7); the structure of permanent magnet mechanism (2) and vacuum interrupter (12) is fixed three covers on switch cabinet (3), permanent magnet mechanism power output shaft (4) lower end of three cover mechanisms all contacts with switch cabinet main shaft (14).
2. the intelligent permanent magnetism vacuum switch of outdoor high-voltage as claimed in claim 1 is characterized in that: described permanent magnet mechanism (2) links to each other with insulating sleeve (7) lower end by permanent magnet mechanism power output shaft (4).
3. the intelligent permanent magnetism vacuum switch of outdoor high-voltage as claimed in claim 1 is characterized in that: also be provided with manual brake separating bar (1) in the described switch cabinet (3), described manual brake separating bar (1) is in tilted layout in the below of permanent magnet mechanism (2).
4. the intelligent permanent magnetism vacuum switch of outdoor high-voltage as claimed in claim 1; it is characterized in that: it also comprises power module (15); A/D converter (16); digital information processor (17) and output circuit (18); described system device power supply CT (9) is connected with power module (15); protection is connected with A/D converter (16) with CT (10); output circuit (18) is connected with permanent magnet mechanism (2); power module (15) respectively with A/D converter (16); digital information processor (17) is connected with output circuit (18), and digital information processor (17) is positioned between A/D converter (16) and the output circuit (18) and is connected with output circuit (18) with A/D converter (16) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202470795U CN201741623U (en) | 2010-06-25 | 2010-06-25 | Outdoor high-voltage intelligent permanent magnetic vacuum switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202470795U CN201741623U (en) | 2010-06-25 | 2010-06-25 | Outdoor high-voltage intelligent permanent magnetic vacuum switch |
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| Publication Number | Publication Date |
|---|---|
| CN201741623U true CN201741623U (en) | 2011-02-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202470795U Expired - Lifetime CN201741623U (en) | 2010-06-25 | 2010-06-25 | Outdoor high-voltage intelligent permanent magnetic vacuum switch |
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| Country | Link |
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| CN (1) | CN201741623U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102290782A (en) * | 2011-08-16 | 2011-12-21 | 武汉百楚科技有限公司 | Permanent magnet vacuum switch on intelligent pole |
| CN103779137A (en) * | 2014-01-16 | 2014-05-07 | 西安交通大学 | Integrated permanent magnet mechanism vacuum switch |
| CN104466867A (en) * | 2013-09-25 | 2015-03-25 | 国家电网公司 | Overhead transmission line |
| CN109119285A (en) * | 2018-09-20 | 2019-01-01 | 辽宁易德实业集团有限公司 | A kind of permanent magnet direct-driven intelligent vacuum open-circuit system |
-
2010
- 2010-06-25 CN CN2010202470795U patent/CN201741623U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102290782A (en) * | 2011-08-16 | 2011-12-21 | 武汉百楚科技有限公司 | Permanent magnet vacuum switch on intelligent pole |
| CN104466867A (en) * | 2013-09-25 | 2015-03-25 | 国家电网公司 | Overhead transmission line |
| CN103779137A (en) * | 2014-01-16 | 2014-05-07 | 西安交通大学 | Integrated permanent magnet mechanism vacuum switch |
| CN109119285A (en) * | 2018-09-20 | 2019-01-01 | 辽宁易德实业集团有限公司 | A kind of permanent magnet direct-driven intelligent vacuum open-circuit system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Wuhan Baichu Technology Co., Ltd. Assignor: Wuhan Bairui Electric Power Technology Co., Ltd. Contract record no.: 2013420000054 Denomination of utility model: Outdoor high-voltage intelligent permanent magnetic vacuum switch Granted publication date: 20110209 License type: Exclusive License Record date: 20130609 Assignee: Wuhan Baichu Technology Co., Ltd. Assignor: Wuhan Bairui Electric Power Technology Co., Ltd. Contract record no.: 2013420000054 Denomination of utility model: Outdoor high-voltage intelligent permanent magnetic vacuum switch Granted publication date: 20110209 License type: Exclusive License Record date: 20130609 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| ASS | Succession or assignment of patent right |
Owner name: WUHAN SMART ELECTRICAL CO., LTD. Free format text: FORMER OWNER: WUHAN BAIRUI ELECTRIC POWER TECHNOLOGY CO., LTD. Effective date: 20131219 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 430014 WUHAN, HUBEI PROVINCE TO: 430205 WUHAN, HUBEI PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20131219 Address after: 430205, Yao hi tech Industrial Park, four hi tech Zone, 35 hi tech Zone, Wuhan, Hubei, East Lake Patentee after: Wuhan Baichu Technology Co., Ltd. Address before: 430014 Fuxing International Plaza, No. 186, Xinhua Road, Jianghan District, Hubei 2301, Wuhan Patentee before: Wuhan Bairui Electric Power Technology Co., Ltd. Effective date of registration: 20131219 Address after: 430205, Yao hi tech Industrial Park, four hi tech Zone, 35 hi tech Zone, Wuhan, Hubei, East Lake Patentee after: Wuhan Baichu Technology Co., Ltd. Address before: 430014 Fuxing International Plaza, No. 186, Xinhua Road, Jianghan District, Hubei 2301, Wuhan Patentee before: Wuhan Bairui Electric Power Technology Co., Ltd. |
|
| EC01 | Cancellation of recordation of patent licensing contract |
Assignee: Wuhan Baichu Technology Co., Ltd. Assignor: Wuhan Bairui Electric Power Technology Co., Ltd. Contract record no.: 2013420000054 Date of cancellation: 20140714 Assignee: Wuhan Baichu Technology Co., Ltd. Assignor: Wuhan Bairui Electric Power Technology Co., Ltd. Contract record no.: 2013420000054 Date of cancellation: 20140714 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| C56 | Change in the name or address of the patentee |
Owner name: WASION BAICHU POWER TECHNOLOGY CO., LTD. Free format text: FORMER NAME: WUHAN SMART ELECTRICAL CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 430205, Yao hi tech Industrial Park, four hi tech Zone, 35 hi tech Zone, Wuhan, Hubei, East Lake Patentee after: WASION BAICHU ELECTRIC POWER TECHNOLOGY CO., LTD. Address before: 430205, Yao hi tech Industrial Park, four hi tech Zone, 35 hi tech Zone, Wuhan, Hubei, East Lake Patentee before: Wuhan Baichu Technology Co., Ltd. Address after: 430205, Yao hi tech Industrial Park, four hi tech Zone, 35 hi tech Zone, Wuhan, Hubei, East Lake Patentee after: WASION BAICHU ELECTRIC POWER TECHNOLOGY CO., LTD. Address before: 430205, Yao hi tech Industrial Park, four hi tech Zone, 35 hi tech Zone, Wuhan, Hubei, East Lake Patentee before: Wuhan Baichu Technology Co., Ltd. |
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| TR01 | Transfer of patent right |
Effective date of registration: 20180306 Address after: 411201 No. 28, Bai Shi Road, Xiangtan City, Hunan Province Patentee after: WEISHENG ELECTRIC CO., LTD. Address before: 430205, Yao hi tech Industrial Park, four hi tech Zone, 35 hi tech Zone, Wuhan, Hubei, East Lake Patentee before: WASION BAICHU ELECTRIC POWER TECHNOLOGY CO., LTD. Effective date of registration: 20180306 Address after: 411201 No. 28, Bai Shi Road, Xiangtan City, Hunan Province Patentee after: WEISHENG ELECTRIC CO., LTD. Address before: 430205, Yao hi tech Industrial Park, four hi tech Zone, 35 hi tech Zone, Wuhan, Hubei, East Lake Patentee before: WASION BAICHU ELECTRIC POWER TECHNOLOGY CO., LTD. |
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| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110209 |