CN109599778B - Box-type substation convenient for replacing transformer - Google Patents
Box-type substation convenient for replacing transformer Download PDFInfo
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- CN109599778B CN109599778B CN201910029138.7A CN201910029138A CN109599778B CN 109599778 B CN109599778 B CN 109599778B CN 201910029138 A CN201910029138 A CN 201910029138A CN 109599778 B CN109599778 B CN 109599778B
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- transformer
- connecting rod
- locking
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- wire holder
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B7/00—Enclosed substations, e.g. compact substations
- H02B7/06—Distribution substations, e.g. for urban network
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- Power Engineering (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The invention discloses a box-type substation convenient for replacing a transformer, which comprises a box body, a base arranged at the bottom of the box body and a top seat arranged at the upper part of the box body, wherein the base is arranged at the bottom of the box body; the interior of the box body is sequentially divided into a high-pressure chamber, a variable-pressure chamber and a low-pressure chamber from left to right; a high-voltage switch cabinet is arranged in the high-voltage chamber; a low-voltage switch cabinet is arranged in the low-voltage chamber; the transformer room is internally provided with two guide rails which are symmetrically arranged, positioning blocks which are positioned at the inner side ends of the two guide rails, and a butt joint locking device which is used for locking and fixing the transformer and can be used for electrically connecting the transformer with the high-voltage switch cabinet and the low-voltage switch cabinet respectively. The design makes the change of transformer more convenient to reduce the maintenance time of transformer substation, ensure the normal use of electric power.
Description
Technical Field
The invention relates to the technical field of box-type substations, in particular to a box-type substation convenient for replacing a transformer.
Background
The box-type substation is also called a pre-installed substation or a pre-installed substation. The high-voltage switch equipment, the distribution transformer and the low-voltage distribution device are factory prefabricated indoor and outdoor compact distribution equipment which are integrated according to a certain wiring scheme, namely, the functions of transformer voltage reduction, low-voltage distribution and the like are organically combined together and are arranged in a steel structure box which is damp-proof, rust-proof, dust-proof, rat-proof, fireproof, anti-theft, heat-insulating, totally-closed and movable. The box-type transformer substation is suitable for mines, factory enterprises, oil-gas fields and wind power stations, replaces the original civil power distribution room and power distribution station, and becomes a novel complete set of power transformation and distribution device.
The box-type substation in the prior art comprises a box body, high-voltage switch equipment, low-voltage distribution equipment and a transformer; the transformer is very troublesome and difficult to replace due to the fact that the transformer is large in size and heavy in weight, and once the transformer goes wrong, the transformer is difficult to replace, time and labor are wasted, and therefore long-time transmission and use of electric power are affected.
Disclosure of Invention
The invention aims to provide a box-type transformer substation with a transformer convenient to replace.
The purpose of the invention is realized as follows: a box-type substation convenient for replacing a transformer comprises a box body, a base arranged at the bottom of the box body and a top seat arranged at the upper part of the box body; the interior of the box body is sequentially divided into a high-pressure chamber, a variable-pressure chamber and a low-pressure chamber from left to right; a high-voltage switch cabinet is arranged in the high-voltage chamber; the low-voltage chamber is internally provided with a low-voltage switch cabinet.
The transformer room is internally provided with two guide rails which are symmetrically arranged, positioning blocks which are positioned at the inner side ends of the two guide rails, a detachable transformer which can linearly move along the guide rails, and a butt joint locking device which is used for locking and fixing the transformer and enabling the transformer to be electrically connected with the high-voltage switch cabinet and the low-voltage switch cabinet respectively.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, the transformer is designed to be capable of moving linearly along the guide rail, and the positioning block is arranged for auxiliary positioning, so that the transformer can conveniently enter the voltage transformation chamber, and quick positioning is realized; in addition, the invention also provides a butt joint locking device, which realizes the quick connection and locking of the terminal assembly of the transformer and realizes the locking and fixing of the transformer; in conclusion, the invention finally realizes the design of easy replacement of the power converter, thereby reducing the maintenance time and ensuring the normal supply of electric power.
As a preferred scheme of the present invention, the transformer includes an oil tank, further includes symmetrically disposed heat dissipation grilles respectively disposed on four end faces of the oil tank, further includes a plurality of rollers disposed at the bottom of the oil tank, further includes a guide block disposed at an inner end of the oil tank, slidably engaged with the guide rail, and used for guiding the transformer to move along the guide rail, and further includes two terminal assemblies disposed at the top of the oil tank; the wiring terminal assemblies are respectively a high-voltage wiring terminal assembly and a low-voltage wiring terminal assembly; a pair of heat dissipation grids of the transformer are respectively provided with a locking seat; a locking groove is arranged on the locking seat; a handle is arranged at the outer side end of the oil tank; when the transformer lock is fastened, the guide block abuts against the positioning block.
As a preferred embodiment of the present invention, the butt-joint locking device includes a wire holder assembly electrically connected to the wire terminal assembly, a locking mechanism simultaneously engaged with the wire holder assembly and the wire terminal assembly for firmly butt-joint locking the wire terminal assembly and the wire holder assembly, and a driving device for driving the wire holder assembly and the locking mechanism to move up and down and relatively; a pair of wire holder assemblies and locking mechanisms are respectively arranged on two sides of the transformer, and the wire holder assemblies and the locking mechanisms move relatively; the two wire holder assemblies are respectively and electrically connected with the corresponding high-voltage switch cabinet or low-voltage switch cabinet.
As a preferred scheme of the present invention, the driving device comprises four vertically arranged lead screws respectively located at four corners of the pressure changing chamber and horizontally rotatably installed on the base and the top seat, a transmission disc arranged at the upper end of the lead screw, and two driving motors respectively arranged at the upper ends of the two obliquely symmetrical lead screws and coaxially connected with the lead screws in a transmission manner; two adjacent screw rods are in transmission connection through a transmission disc; the wire holder assembly comprises a lower sliding seat, a wire holder and a guide hole, wherein the lower sliding seat is arranged on the two lead screws on the same side and can move up and down along the lead screws, the wire holder is arranged on the lower sliding seat and is used for being matched with a terminal on the wire terminal assembly, and the guide hole is arranged between the adjacent wire holders; the locking mechanism comprises an upper sliding seat, two guide plates and an expansion mechanism, wherein the upper sliding seat is arranged on the two lead screws on the same side and can move up and down along the lead screws, the two guide plates are symmetrically arranged on the upper sliding seat, and the expansion mechanism is arranged on the upper sliding seat and used for locking and fixing a butted wiring terminal assembly and a butted wiring holder assembly; the butt-joint locking device also comprises two symmetrically arranged locking rods, wherein two ends of each locking rod are respectively and fixedly arranged on the two upper sliding seats; when the transformer lock is fastened, the locking rods are matched with the corresponding locking grooves respectively.
As a preferred scheme of the present invention, the expansion mechanism includes a guide post vertically disposed on the upper sliding seat and corresponding to the guide hole, an upper sliding sleeve and a lower sliding sleeve slidably disposed on the guide post, and two sets of expansion units symmetrically disposed; the expansion unit comprises a first connecting rod, a second connecting rod, a third connecting rod, a fourth connecting rod and an expansion plate; one end of the first connecting rod is hinged to the root of the guide pillar, the other end of the first connecting rod is hinged to the second connecting rod, and the other end of the second connecting rod is hinged to the upper sliding sleeve; one end of the third connecting rod is hinged on the upper sliding sleeve, the other end of the third connecting rod is hinged with the fourth connecting rod, and the other end of the fourth connecting rod is hinged on the lower sliding sleeve; the expansion plate is hinged with the first connecting rod and the second connecting rod at the hinged positions, and is hinged with the third connecting rod and the fourth connecting rod at the hinged positions.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a sectional view taken along line a-a of fig. 1.
Fig. 3 is a partially enlarged schematic view of C in fig. 2.
Fig. 4 is a schematic structural diagram of the locking mechanism of the present invention.
Fig. 5 is a schematic structural diagram of the wire holder assembly of the present invention.
Fig. 6 is a sectional view taken along line B-B in fig. 1.
Fig. 7 is a front view of the transformer of the present invention.
The high-voltage switch cabinet comprises a box body 1, a high-voltage chamber 101, a high-voltage switch cabinet 101a, a variable-voltage chamber 102, a low-voltage chamber 103, a low-voltage switch cabinet 103a, a base 2, a top seat 3, a guide rail 4, a positioning block 5, a transformer 6, an oil tank 601, a heat dissipation grid 602, a locking seat 602a, a locking groove 602b, a roller 603, a guide block 604, a high-voltage terminal assembly 605, a low-voltage terminal assembly 606, a handle 607, a wire holder assembly 7, a lower sliding seat 701, a wire holder 702, a guide hole 703, a locking mechanism 8, an upper sliding seat 801, a guide plate 802, a 803 expansion mechanism, a guide column 803a, an upper sliding sleeve 803b, a lower sliding sleeve 803c, a first connecting rod 803d, a second connecting rod 803e, a third connecting rod 803f, a fourth connecting rod 803g, an expansion plate 803h, a locking rod 9.
Detailed Description
As shown in fig. 1-7, a box-type substation convenient for replacing a transformer comprises a box body 1, a base 2 arranged at the bottom of the box body 1, and a top seat 3 arranged at the upper part of the box body 1; the interior of the box body 1 is divided into a high-pressure chamber 101, a variable-pressure chamber 102 and a low-pressure chamber 103 from left to right in sequence; a high-voltage switch cabinet 101a is arranged in the high-voltage chamber 101; a low-voltage switch cabinet 103a is arranged in the low-voltage chamber 103; two guide rails 4 which are symmetrically arranged are arranged in the pressure changing chamber 102, a positioning block 5 which is positioned at the inner side ends of the two guide rails 4 is also arranged, a detachable transformer 6 which can linearly move along the guide rails 4 is also arranged, and a butt joint locking device which is used for locking and fixing the transformer 6 and enabling the transformer to be electrically connected with the high-voltage switch cabinet 101a and the low-voltage switch cabinet 103a respectively is also arranged.
The transformer 6 comprises an oil tank 601, symmetrically arranged heat dissipation grilles 602 respectively arranged on four end faces of the oil tank 601, a plurality of rollers 603 arranged at the bottom of the oil tank 601, a guide block 604 arranged at the inner side end of the oil tank 601, in sliding fit with the guide rail 4, and used for guiding the transformer 6 to move along the guide rail 4, and two terminal assemblies arranged at the top of the oil tank 601; the terminal assemblies are respectively a high-voltage terminal assembly 605 and a low-voltage terminal assembly 606; a pair of heat dissipation grids 602 of the transformer 6 are respectively provided with a locking seat 602 a; a locking groove 602b is formed on the locking seat 602 a; a handle 607 is arranged at the outer side end of the oil tank 601; when the transformer 6 is locked and fastened, the guide block 604 abuts against the positioning block 5.
The butt joint locking device comprises a wire holder assembly 7 electrically connected with the wiring terminal assembly, a locking mechanism 8 which is matched with the wire holder assembly 7 and the wiring terminal assembly simultaneously and is used for enabling the wiring terminal assembly and the wiring holder assembly 7 to be firmly butt-jointed and locked, and a driving device which is used for driving the wire holder assembly 7 and the locking mechanism 8 to move up and down and relatively; a pair of wire holder assemblies 7 and a locking mechanism 8 are respectively arranged on two sides of the transformer 6, and the wire holder assemblies 7 and the locking mechanism 8 move relatively; the two wire holder assemblies 7 are electrically connected to the corresponding high-voltage switch cabinet 101a or low-voltage switch cabinet 103a, respectively.
The driving device comprises four vertically arranged screw rods 10 which are respectively positioned at four corners of the pressure changing chamber 102 and can be horizontally and rotatably arranged on the base 2 and the top seat 3, a transmission disc 11 arranged at the upper end of the screw rods 10, and two driving motors 12 which are respectively arranged at the upper ends of the two obliquely symmetrical screw rods 10 and are coaxially connected with the two obliquely symmetrical screw rods in a transmission way; two adjacent screw rods 10 are in transmission connection through a transmission disc 11; the wire holder assembly 7 comprises a lower slide seat 701 which is arranged on the two lead screws 10 at the same side and can move up and down along the lower slide seat, a wire holder 702 which is arranged on the lower slide seat 701 and is used for being matched with a terminal on the wire holder assembly, and a guide hole 703 which is arranged between the adjacent wire holders 702; the locking mechanism 8 comprises an upper sliding seat 801 which is arranged on the two lead screws 10 at the same side and can move up and down along the upper sliding seat, two guide plates 802 which are symmetrically arranged on the upper sliding seat 801, and an expansion mechanism 803 which is arranged on the upper sliding seat 801 and is used for locking and fixing the butted terminal assembly and the terminal seat assembly 7; the butt joint locking device also comprises two symmetrically arranged locking rods 9, two ends of each locking rod are respectively and fixedly arranged on the two upper sliding seats 801; when the transformer 6 is locked tightly, the locking rods 9 are engaged with the corresponding locking recesses 602b, respectively.
The expansion mechanism 803 comprises a guide post 803a vertically arranged on the upper slide carriage 801 and corresponding to the guide hole 703, an upper sliding sleeve 803b and a lower sliding sleeve 803c which are arranged on the guide post 803a in a vertically sliding manner, and two groups of symmetrically arranged expansion units; the expansion unit includes a first link 803d, a second link 803e, a third link 803f, a fourth link 803g, and an expansion plate 803 h; one end of the first link 803d is hinged to the root of the guide pillar 803a, and the other end is hinged to a second link 803e, and the other end of the second link 803e is hinged to the upper sliding sleeve 803 b; one end of the third connecting rod 803f is hinged to the upper sliding sleeve 803b, and the other end is hinged to the fourth connecting rod 803g, and the other end of the fourth connecting rod 803g is hinged to the lower sliding sleeve 803 c; the expansion plate 803h is hinged to the first and second links 803d, 803e at the hinge joint, and is also hinged to the third and fourth links 803f, 803g at the hinge joint.
When the replacement is carried out, firstly, the power supply of the transformer substation is cut off; then starting the driving motor 12, the screw rod 10 rotates along with the rotation, the locking mechanism 8 and the wire holder assembly 7 move back to back, one moves upwards and the other moves downwards, and the wire holder assembly and the transformer 6 are gradually loosened, so that the transformer 6 can move; then directly removing the transformer 6 along the guide rail 4; then, the spare transformer 6 is sent into the voltage transformation chamber 102 along the guide rail 4 until the guide block 604 of the transformer 6 abuts against the positioning block 5; finally, the motor 12 is started again, so that the locking mechanism 8 and the wire holder assembly 7 move oppositely until the wire holder assembly 7, the locking mechanism 8 and the wiring terminal assembly are matched to complete the electrical connection, and meanwhile, the locking rod 9 is also matched with the locking groove 602b to complete the locking and fixing of the transformer 6; the replacement of the transformer 6 is now completed.
The present invention is not limited to the above-mentioned embodiments, and based on the technical solutions disclosed in the present invention, those skilled in the art can make some substitutions and modifications to some technical features without creative efforts according to the disclosed technical contents, and these substitutions and modifications are all within the protection scope of the present invention.
Claims (2)
1. The utility model provides a conveniently replace box-type substation of transformer which characterized in that: the box-type substation comprises a box body (1), a base (2) arranged at the bottom of the box body (1), and a top seat (3) arranged at the upper part of the box body (1); the interior of the box body (1) is sequentially divided into a high-pressure chamber (101), a variable-pressure chamber (102) and a low-pressure chamber (103) from left to right; a high-voltage switch cabinet (101 a) is arranged in the high-voltage chamber (101); a low-voltage switch cabinet (103 a) is arranged in the low-voltage chamber (103);
two guide rails (4) which are symmetrically arranged are arranged in the variable pressure chamber (102), positioning blocks (5) which are positioned at the inner side ends of the two guide rails (4) are also arranged, a detachable transformer (6) which can linearly move along the guide rails (4) is also arranged, and a butt joint locking device which is used for locking and fixing the transformer (6) and electrically connecting the transformer with the high-voltage switch cabinet (101 a) and the low-voltage switch cabinet (103 a) respectively is also arranged;
the transformer (6) comprises an oil tank (601), symmetrically arranged heat dissipation grids (602) respectively arranged on four end faces of the oil tank (601), a plurality of rollers (603) arranged at the bottom of the oil tank (601), a guide block (604) which is arranged at the inner side end of the oil tank (601), is in sliding fit with the guide rail (4) and is used for guiding the transformer (6) to move along the guide rail (4), and two terminal assemblies arranged at the top of the oil tank (601); the terminal assemblies are respectively a high-voltage terminal assembly (605) and a low-voltage terminal assembly (606); a pair of heat dissipation grids (602) of the transformer (6) are respectively provided with a locking seat (602 a); a locking groove (602 b) is formed in the locking seat (602 a); a handle (607) is arranged at the outer side end of the oil tank (601);
when the transformer (6) is locked and fastened, the guide block (604) is abutted against the positioning block (5);
the butt joint locking device comprises a wire holder assembly (7) electrically connected with the wiring terminal assembly, a locking mechanism (8) which is matched with the wire holder assembly (7) and the wiring terminal assembly simultaneously and used for enabling the wiring terminal assembly and the wiring holder assembly (7) to be in butt joint and locked firmly, and a driving device used for driving the wire holder assembly (7) and the locking mechanism (8) to move up and down and relatively; a pair of wire holder assemblies (7) and a locking mechanism (8) are respectively arranged on two sides of the transformer (6), and the wire holder assemblies (7) and the locking mechanism (8) move relatively; the two wire holder assemblies (7) are respectively and electrically connected with the corresponding high-voltage switch cabinet (101 a) or low-voltage switch cabinet (103 a);
the driving device comprises four vertically arranged screw rods (10) which are respectively positioned at four corners of the pressure changing chamber (102) and can be horizontally and rotatably arranged on the base (2) and the top seat (3), a transmission disc (11) arranged at the upper end of the screw rods (10), and two driving motors (12) which are respectively arranged at the upper ends of the two obliquely symmetrical screw rods (10) and are coaxially connected with the two obliquely symmetrical screw rods in a transmission way; two adjacent screw rods (10) are in transmission connection through a transmission disc (11);
the wire holder assembly (7) comprises a lower sliding seat (701) which is arranged on the two lead screws (10) at the same side and can move up and down along the lower sliding seat, a wire holder (702) which is arranged on the lower sliding seat (701) and is used for being matched with a terminal on the wire holder assembly, and a guide hole (703) which is arranged between the adjacent wire holders (702);
the locking mechanism (8) comprises an upper sliding seat (801) which is arranged on the two lead screws (10) at the same side and can move up and down along the upper sliding seat, two guide plates (802) which are symmetrically arranged on the upper sliding seat (801), and an expansion mechanism (803) which is arranged on the upper sliding seat (801) and is used for locking and fixing the butted wiring terminal assembly and wiring holder assembly (7);
the butt joint locking device also comprises two symmetrically arranged locking rods (9) of which two ends are respectively and fixedly arranged on the two upper sliding seats (801); when the transformer (6) is locked and fastened, the locking rods (9) are respectively matched with the corresponding locking grooves (602 b).
2. The box-type substation convenient for replacing the transformer in claim 1 is characterized in that: the expansion mechanism (803) comprises a guide post (803 a) which is vertically arranged on the upper sliding seat (801) and corresponds to the guide hole (703), an upper sliding sleeve (803 b) and a lower sliding sleeve (803 c) which are arranged on the guide post (803 a) in a vertically sliding manner, and two groups of expansion units which are symmetrically arranged;
the expansion unit comprises a first connecting rod (803 d), a second connecting rod (803 e), a third connecting rod (803 f), a fourth connecting rod (803 g) and an expansion plate (803 h); one end of the first connecting rod (803 d) is hinged at the root of the guide pillar (803 a), the other end of the first connecting rod is hinged with a second connecting rod (803 e), and the other end of the second connecting rod (803 e) is hinged on the upper sliding sleeve (803 b); one end of the third connecting rod (803 f) is hinged on the upper sliding sleeve (803 b), the other end of the third connecting rod is hinged with a fourth connecting rod (803 g), and the other end of the fourth connecting rod (803 g) is hinged on the lower sliding sleeve (803 c); the expansion plate (803 h) is hinged with the first connecting rod (803 d) and the second connecting rod (803 e) at the hinged positions, and is hinged with the third connecting rod (803 f) and the fourth connecting rod (803 g) at the hinged positions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910029138.7A CN109599778B (en) | 2019-01-12 | 2019-01-12 | Box-type substation convenient for replacing transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910029138.7A CN109599778B (en) | 2019-01-12 | 2019-01-12 | Box-type substation convenient for replacing transformer |
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| Publication Number | Publication Date |
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| CN109599778A CN109599778A (en) | 2019-04-09 |
| CN109599778B true CN109599778B (en) | 2021-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910029138.7A Active CN109599778B (en) | 2019-01-12 | 2019-01-12 | Box-type substation convenient for replacing transformer |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111856167B (en) * | 2019-04-19 | 2023-06-27 | 宁波奥克斯智能科技股份有限公司 | Detection method of box-type transformer and transformer |
| CN111856166B (en) * | 2019-04-19 | 2023-08-01 | 宁波奥克斯智能科技股份有限公司 | Detection method of box-type transformer and transformer |
| CN110544571B (en) * | 2019-08-28 | 2020-12-11 | 温州新国余机械科技有限公司 | Voltage ware waterproof construction convenient to dismouting just has fire-retardant function |
| CN111952877B (en) * | 2020-08-11 | 2022-03-01 | 国家电网有限公司 | Mounting tool for mounting and maintaining transformer |
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| US5239278A (en) * | 1991-12-09 | 1993-08-24 | Basler Electric Company | Transformer and mounting bracket assembly |
| JPH07297039A (en) * | 1994-04-26 | 1995-11-10 | Hitachi Ltd | Stationary induction apparatus |
| CN201528142U (en) * | 2009-09-30 | 2010-07-14 | 吉林省金冠电气股份有限公司 | Combined box substation provided with transformer chassis truck |
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| CN107993802A (en) * | 2017-12-26 | 2018-05-04 | 铜陵三佳变压器科技股份有限公司 | A kind of connection structure of transformer pulling plate and folder |
| CN207651305U (en) * | 2018-04-27 | 2018-07-24 | 江西成功电气有限公司 | A kind of oil-immersed transformer structure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6865073B2 (en) * | 2003-03-06 | 2005-03-08 | General Electric Company | Panelboard metering arrangement and method of assembly thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5239278A (en) * | 1991-12-09 | 1993-08-24 | Basler Electric Company | Transformer and mounting bracket assembly |
| JPH07297039A (en) * | 1994-04-26 | 1995-11-10 | Hitachi Ltd | Stationary induction apparatus |
| CN201528142U (en) * | 2009-09-30 | 2010-07-14 | 吉林省金冠电气股份有限公司 | Combined box substation provided with transformer chassis truck |
| CN204390901U (en) * | 2014-12-23 | 2015-06-10 | 天威云南变压器股份有限公司 | Pressing device of transformer coil |
| CN107993802A (en) * | 2017-12-26 | 2018-05-04 | 铜陵三佳变压器科技股份有限公司 | A kind of connection structure of transformer pulling plate and folder |
| CN207651305U (en) * | 2018-04-27 | 2018-07-24 | 江西成功电气有限公司 | A kind of oil-immersed transformer structure |
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| CN109599778A (en) | 2019-04-09 |
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Denomination of invention: Box type substation convenient for replacing transformer Effective date of registration: 20211027 Granted publication date: 20210511 Pledgee: Bank of China Limited Hangjiang Branch, Yangzhou Pledgor: YANGZHOU LIV TRANSFORMER Co.,Ltd. Registration number: Y2021980011415 |
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Address after: 225000 Taida Road, Yangzhou Environmental Protection Technology Industrial Park, Hanjiang District, Yangzhou City, Jiangsu Province Patentee after: Jiangsu Liwei electric (Group) Co.,Ltd. Address before: 225000 Taida Road, Yangzhou Environmental Protection Technology Industrial Park, Hanjiang District, Yangzhou City, Jiangsu Province Patentee before: YANGZHOU LIV TRANSFORMER Co.,Ltd. |
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