CN214254984U - Mobile electricity transmission vehicle and graphitization furnace power supply switching device - Google Patents
Mobile electricity transmission vehicle and graphitization furnace power supply switching device Download PDFInfo
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- CN214254984U CN214254984U CN202120071884.5U CN202120071884U CN214254984U CN 214254984 U CN214254984 U CN 214254984U CN 202120071884 U CN202120071884 U CN 202120071884U CN 214254984 U CN214254984 U CN 214254984U
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Abstract
The utility model provides a portable power transmission car and graphitizing furnace power supply auto-change over device belongs to the power supply auto-change over device field, and portable power transmission car includes the automobile body, be equipped with on the automobile body: a busbar; the electrode clamping assembly is used for clamping the conductive electrode of the furnace end; the vehicle-mounted conducting bar assembly is connected with the electrode clamping assembly; and the pressing mechanism is connected with the vehicle-mounted conductive bar assembly and is used for driving the vehicle-mounted conductive bar assembly to move so as to realize the pressing and separation of the busbar. The utility model discloses a portable power transmission car is when using, and the tight furnace end of electrode clamping component clamp is led the electric electrode, drives on-vehicle electrically conductive row's subassembly and female arranging through hold-down mechanism and compresses tightly, and closing a floodgate this moment can carry out the power transmission, and the power transmission finishes when changing the stove only need according to above-mentioned process opposite operation can, can realize accomplishing switching work in 20-30min, has solved the long consuming time, with high costs, the big scheduling problem of area that current power transmission switching mode exists.
Description
Technical Field
The utility model belongs to the power supply auto-change over device field, concretely relates to portable defeated trolley, in addition, the utility model discloses still relate to a graphitization furnace power supply auto-change over device including above-mentioned portable defeated trolley.
Background
At present, after the power transmission of a furnace end (tail) of a graphitization furnace is finished, a clamping device of an aluminum bus connected to the electrode of the furnace end through copper flexible connection needs to be unscrewed manually, and after the clamping device of a ready power transmission furnace is disconnected, the clamping device is screwed down, so that normal power transmission production can be carried out.
The power transmission switching mode has at least the following defects:
1. the switching time is long, and each switching can be completed only by consuming 2-3h by about 5 workers;
2. the occupied area is large, the existing method needs to weld a branch bus bar at the lower side of a main bus bar of a furnace end (furnace tail), and needs to connect the branch bus bar to a furnace end electrode copper in a flexible way, and the branch bus bar and the furnace end electrode copper occupy most space of the furnace end (furnace tail);
3. the method has potential safety hazards, the non-electrified graphitization furnace in the prior method is realized by adding an epoxy resin insulating plate between the branch busbar and the copper flexible connection for separation, the graphite powder in a graphitization workshop is gathered between the branch busbar and the copper flexible connection to cause short-circuit accidents, and if a conductive object falls down from the electrified branch busbar and is connected with a workshop steel column, the electrified branch busbar can also cause short-circuit;
4. the cost is high, about 320 tons of aluminum bars and 90 tons of copper bars are needed for the graphitization furnace according to 10000 tons/year, and about 55 tons of steel materials are needed for the clamping device.
SUMMERY OF THE UTILITY MODEL
Based on the background problem, the utility model aims to provide a mobile power transmission car, after the graphitization furnace finishes power transmission, the manually operated mobile power transmission car moves to be aligned with the furnace to be transmitted, the clamping assembly is operated to be respectively connected with the main bus bar and the furnace end electrode to finish the furnace replacement work, the consumed time is short, the existing short circuit potential safety hazard is eliminated, and the cost is reduced; the utility model also aims to provide a graphitization furnace power supply switching device comprising the mobile power transmission vehicle.
In order to achieve the above object, on the one hand, the embodiment of the present invention provides a technical solution:
portable defeated trolley, including the automobile body, be equipped with on the automobile body:
a busbar;
the electrode clamping assembly is used for clamping the furnace end electrode;
the vehicle-mounted conducting bar assembly is connected with the electrode clamping assembly;
and the pressing mechanism is connected with the vehicle-mounted conductive bar assembly and is used for driving the vehicle-mounted conductive bar assembly to move so as to realize the pressing and separation of the busbar.
In one embodiment, the vehicle mounted conductive bar assembly comprises:
a copper soft belt;
two groups of conductive copper plates are arranged at two ends of the copper soft belt respectively;
and the copper bus is connected between the two ends of the copper soft belt.
Preferably, the two groups of conductive copper plates are arranged on the inner side of the electrode clamping assembly and are tightly attached to the furnace end electrode; and the conductive copper plate positioned between the two ends of the copper soft belt is connected with the pressing mechanism so as to be driven by the pressing mechanism to be pressed and separated with the busbar.
In one embodiment, the vehicle mounted conductor bar assembly further comprises:
and the bus side copper plate is fixed on the pressing mechanism and is connected with the copper bus.
In one embodiment, the pressing mechanism comprises a telescopic cylinder, the telescopic cylinder is fixed on the vehicle body, and the bus-bar-side copper plate is fixed at the telescopic end of the telescopic cylinder.
In one embodiment, the electrode clamping assembly is of a clamp-type construction.
Preferably, the electrode clamping assembly comprises:
the clamping arm I and the clamping arm II are symmetrically arranged and are used for being abutted against the side wall of the furnace end electrode;
the connecting plate stretches across the clamping arm I and the clamping arm II, one end of the connecting plate is hinged with the clamping arm I, and the other end of the connecting plate is hinged with the clamping arm II;
and the pressing power source is connected between the clamping arm I and the clamping arm II, and is respectively hinged with the clamping arm II of the clamping arm I for driving the clamping and separating of the clamping arm I and the clamping arm II.
In one embodiment, the vehicle body includes:
the lower chassis is movably arranged on a preset guide rail;
the upper chassis is movably arranged on the lower chassis, and the moving direction of the upper chassis is vertical to that of the lower chassis, so that the vehicle body can move along two directions of the furnace length and the furnace width of the graphitization furnace.
On the other hand, the embodiment of the utility model provides a graphitizing furnace power supply auto-change over device, including foretell portable defeated trolley.
In one embodiment, the two groups of mobile power transmission vehicles are respectively an anode mobile power transmission vehicle and a cathode mobile power transmission vehicle, the anode mobile power transmission vehicle corresponds to the anode conductive electrode of the furnace end, the cathode mobile power transmission vehicle corresponds to the cathode conductive electrode of the furnace end, and the anode mobile power transmission vehicle and the cathode mobile power transmission vehicle are connected on the corresponding guide rails in a sliding manner.
Compared with the prior art, the utility model discloses following effect has:
1. the utility model discloses a portable power transmission car is when using, and electrode clamping component presss from both sides tight furnace end electrode, drives on-vehicle electrically conductive row subassembly and female arranging through hold-down mechanism and compresses tightly, and closing a floodgate this moment can carry out the power transmission, and the power transmission finishes when changing the stove only need according to above-mentioned process opposite operation can, can realize accomplishing switching work in 20-30min, has solved the long problem consuming time that current power transmission switching mode exists.
2. The utility model discloses a portable defeated trolley-bus has saved the female branch mother row of arranging welding downwards in every furnace end both sides, has saved the female soft hookup of copper of arranging to every furnace end electrode connection of branch, has saved the steel pressure strip that the female side of arranging of furnace end electrode side and branch is used for compressing tightly, whole reducible cost 300 adds 500 ten thousand yuan, and economic benefits is high.
3. The utility model discloses a vehicle-mounted conductive bar component which comprises a copper soft belt, conductive copper plates arranged at two ends of the copper soft belt and conductive copper plates arranged between the two ends of the copper soft belt; the arrangement of the copper soft belt enables the vehicle-mounted conductive bar assembly to move up and down smoothly, and the arrangement of the conductive copper plate enables the vehicle-mounted conductive bar assembly to be in good contact with the conductive electrode and the busbar.
4. The utility model discloses an automobile body comprises last chassis and lower chassis, and the portable setting on lower chassis is on predetermineeing the guide rail, and the portable setting on lower chassis can realize like this that the automobile body moves along two directions of furnace length, the stove width of graphitizing furnace, the operation of being convenient for.
5. The utility model can realize single operation, and can realize automatic operation after increasing corresponding electric control, thereby reducing the operation intensity; just the utility model discloses a power supply auto-change over device has subtracted the branch of furnace end terminal surface and has female arranging, under the same area condition, very big improvement workman's operational environment, saved the space.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below.
Fig. 1 is a schematic side view of a mobile power transmission train in embodiment 1 of the present invention;
fig. 2 is a plan view of a clamping assembly according to embodiment 1 of the present invention;
fig. 3 is a schematic structural view of an on-vehicle busbar assembly according to embodiment 1 of the present invention;
fig. 4 is a schematic structural view of a power supply switching device of a graphitization furnace in embodiment 2 of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "top", "bottom", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "rear", and the like indicate the orientation or positional relationship based on the use state of the product, and are only for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. It should be further noted that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as limiting or implying only relative importance or implying any number of technical features known to be indicated.
Example 1
In order to solve the long, with high costs, the big scheduling problem of area of switching time that current power transmission auto-change over device exists, the embodiment of the utility model provides a portable power transmission car, as shown in fig. 1, including automobile body 1, be equipped with on automobile body 1: the bus bar comprises a bus bar 2, an electrode clamping assembly 3, a vehicle-mounted conductive bar assembly 4 and a pressing mechanism 5.
In this embodiment, the vehicle body 1 is configured to drive the busbar 2, the electrode clamping assembly 3, and the vehicle-mounted conducting bar assembly 4 to move, and specifically, the vehicle body 1 includes a lower chassis 101 and an upper chassis 102.
The lower surface of the lower chassis 101 is provided with a sliding block 103, and the lower chassis 101 can be connected to a preset guide rail in a sliding manner through the sliding block 103; the upper chassis 102 is movably arranged on the lower chassis 101, and the moving direction of the upper chassis 102 is vertical to that of the lower chassis 101, so that the vehicle body 1 can move along two directions of the furnace length and the furnace width of the graphitization furnace; taking fig. 1 as an example, the lower chassis 101 can move forward and backward, and the upper chassis 102 can move left and right along the lower chassis 101.
For the specific structure of the upper chassis 102, the embodiment is not particularly limited, and specifically, a sliding groove may be embedded in the upper surface of the lower chassis 101, and a pulley is disposed on the lower surface of the upper chassis 102 and is connected to the sliding groove in a sliding manner, so that the upper chassis 102 can move left and right along the lower chassis 101, but the invention is not limited thereto.
In this embodiment, the busbar 2 is an aluminum busbar, and the busbar 2 is disposed right above the pressing mechanism 5, so that when the pressing mechanism 5 drives the busbar-side copper plate 404 to move upwards, the busbar 2 can be pressed.
In this embodiment, the electrode clamping assembly 3 is used for clamping a burner electrode, specifically, the electrode clamping assembly 3 is fixed on the upper chassis 102 through a support rod, and since the burner electrode is provided with three groups, the electrode clamping assembly in this embodiment is also provided with three groups corresponding to the burner electrode one to one.
In this embodiment, the electrode clamping assembly 3 is of a clamp structure, and as shown in fig. 2, the electrode clamping assembly includes: a clamp arm I301, a clamp arm II 302, a compression power source 303, and a connecting plate 304.
The clamping arm I301 and the clamping arm II 302 are symmetrically arranged, and the clamping arm I301 and the clamping arm II 302 are abutted to the side wall of the furnace end electrode when being clamped, in this embodiment, the clamping arm I301 and the clamping arm II 302 are both L-shaped structures, in order to ensure close contact with the furnace end electrode 100, the inner side surfaces of the clamping arm I301 and the clamping arm II 302 are both planes, and the structures of the clamping arm I301 and the clamping arm II 302 are not limited thereto, and in other embodiments, the clamping arm I301 and the clamping arm II 302 may also be arc-shaped structures.
The connecting plate 304 is arranged across the clamping arm I301 and the clamping arm II 302, that is, one end of the connecting plate 304 is fixed on the clamping arm I301, and the other end is fixed on the clamping arm II 302, for connecting the clamping arm I301 and the clamping arm II 302. Specifically, the connecting plate 304 is rotatably connected to the clamping arm I301 and the clamping arm II 302, and the rotatable connection may be a pin connection, but is not limited thereto.
The pressing power source 303 is connected between the clamping arm I301 and the clamping arm II 302, and specifically, as shown in fig. 2, the pressing power source 303 is connected between the clamping arm I301 and the left end of the clamping arm II, that is, is disposed away from the burner electrode.
The pressing power source 303 is used for driving the clamping arm I301 and the clamping arm II 302 to clamp and separate, the pressing power source 303 in this embodiment is a hydraulic cylinder, a fixed end of the hydraulic cylinder is hinged to the clamping arm II 302, and a telescopic end of the hydraulic cylinder is hinged to the clamping arm I301, as shown in fig. 2, when the hydraulic cylinder extends, the clamping arm I301 is driven to rotate clockwise around a hinge joint with the connecting plate 304, and under the action of the connecting plate 304, the clamping arm II 302 rotates counterclockwise, so that the clamping arm I301 and the clamping arm II 302 are driven to approach to each other to clamp the furnace end electrode; when the hydraulic cylinder contracts, the clamping arm I301 is driven to rotate anticlockwise around the hinged position of the connecting plate 304, and under the action of the connecting plate 304, the clamping arm II 302 can rotate clockwise to drive the clamping arm I301 and the clamping arm II 302 to separate, so that the furnace end electrode is released.
It should be noted that the hydraulic cylinder of this embodiment is a single-head hydraulic cylinder, in other embodiments, a double-head hydraulic cylinder may also be used, and two telescopic ends of the double-head hydraulic cylinder respectively control the rotation of the clamping arm I301 and the clamping arm II 302; in addition, the pressing power source 303 is not limited to a hydraulic cylinder, and in other embodiments, an electric push rod, a pneumatic cylinder, or the like may be used; the pressing power source 303 is not limited to be disposed away from the burner electrode, and may be disposed on the burner electrode side, or may be interchanged with the connection plate 304 in fig. 2.
It should be noted that the electrode clamping assembly is not limited to the driving structure of the pressing power source of the embodiment, and in other embodiments, the electrode clamping assembly may be connected to the burner electrode by fastening with a bolt or the like.
In this embodiment, as shown in fig. 1, the on-vehicle busbar assembly 4 is connected to the electrode clamping assemblies 3 and the pressing mechanism 5, and the on-vehicle busbar assembly 4 includes three sets of electrode clamping assemblies 3.
Specifically, as shown in fig. 3, the vehicle-mounted conductive bar assembly 4 includes: a copper soft belt 401, a first conductive copper plate 402, a second conductive copper plate, a copper bus bar 403, and a bus bar-side copper plate 404; the first conductive copper plate 401 and the second conductive copper plate are respectively disposed at both ends of the copper flexible band 401, the bus-side copper plate 404 is disposed at a telescopic end of a telescopic cylinder 501, which will be described later, and the copper bus 403 is connected between both ends of the copper flexible band 401 and fixed to the bus-side copper plate 404.
As shown in fig. 1, the first conductive copper plate 402 and the second conductive copper plate are respectively disposed at two sides inside the electrode clamping assembly 3, and are tightly attached to the furnace end electrode during power transmission, and the bus-side copper plate 404 is fixed to the pressing mechanism 5, so as to drive the bus-side copper plate 404 to be pressed against and separated from the busbar 2 through the pressing mechanism 5.
In this embodiment, as shown in fig. 1, the pressing mechanism 5 includes a telescopic cylinder 501, the telescopic cylinder 501 is fixed on the upper chassis 102, the bus-side copper plate 404 is further fixed at the telescopic end of the telescopic cylinder 501, when the telescopic cylinder 501 extends, the bus-side copper plate 404 is driven to press the bus bar 2, and when the telescopic cylinder 501 contracts, the bus-side copper plate 404 is driven to separate from the bus bar 2.
The telescopic cylinder 501 in this embodiment is specifically a hydraulic cylinder, but is not limited to this, and in other embodiments, a pneumatic cylinder or an electric push rod may be used.
It should be noted that the telescopic cylinder 501 of this embodiment drives the bus-side copper plate 405 to move up and down to compress and separate from the bus bar 2, in other embodiments, the bus bar 2 may also be disposed at the rear side of the bus-side copper plate 405, and the telescopic cylinder is disposed horizontally and supported on the upper chassis 102 through a support rod, and drives the bus-side copper plate 405 to move back and forth through the telescopic cylinder to compress and separate from the bus bar 2; similarly, the busbar 2 may be disposed on the right side of the busbar-side copper plate 405.
Example 2
As shown in fig. 4, the graphitization furnace power supply switching device includes a positive electrode mobile power transmission vehicle 100 and a negative electrode mobile power transmission vehicle 200, the positive electrode mobile power transmission vehicle 100 corresponds to the positive electrode conductive electrode 400 of the graphitization furnace 300, and the negative electrode mobile power transmission vehicle 200 corresponds to the negative electrode conductive electrode 500 of the graphitization furnace 300.
In this embodiment, referring to fig. 4 as an example, the graphitization furnace 300 is provided with a first guide rail on the left side and a second guide rail on the right side, the first guide rail and the second guide rail both extend in the front-back direction, the positive movable type power transmission train 100 is connected to the first guide rail in a sliding manner, the negative movable type power transmission train 200 is connected to the second guide rail in a sliding manner, and specifically, the first guide rail and the second guide rail are connected to each other in a sliding manner by a slider provided on the movable type power transmission train.
When the electric vehicle starts to work, the positive movable electric vehicle 100 and the negative movable electric vehicle 200 are aligned with the furnace end of the graphitization furnace 300, during power transmission, the positive movable electric vehicle 100 moves to enable the electrode clamping component 3 to clamp the positive conductive electrode 400 of the furnace end, then the telescopic cylinder 501 is driven to extend to drive the bus-bar side copper plate 404 to move upwards until the bus-bar side copper plate is tightly pressed with the busbar 2 and reaches good contact, the operation of the negative movable electric vehicle 200 is the same as the operation process of the positive movable electric vehicle 100, and at the moment, power transmission can be switched on.
When the furnace needs to be changed for power supply switching, the telescopic cylinder 501 of the positive electrode mobile power transmission car 100 is operated to contract to drive the bus-bar-side copper plate 404 to move downwards, at this time, the bus-bar-side copper plate 404 is separated from the busbar 2, then the positive electrode conductive electrode 400 is loosened by the electrode clamping assembly 3 and moved leftwards, the negative electrodes are operated in the same manner, and finally the positive electrode mobile power transmission car 100 and the negative electrode mobile power transmission car 200 are moved to the front of the graphitizing furnace to be powered, and then the power transmission can be carried out according to the power transmission mode.
The present invention is mainly applied to switching of power supply to an acheson graphitization furnace, but is not limited thereto.
It should be noted that, for those skilled in the art, without departing from the inventive concept, several variations and modifications can be made, which are within the scope of the present invention.
Claims (10)
1. Portable defeated trolley, its characterized in that includes the automobile body, be equipped with on the automobile body:
a busbar;
the electrode clamping assembly is used for clamping the furnace end electrode;
the vehicle-mounted conducting bar assembly is connected with the electrode clamping assembly;
and the pressing mechanism is connected with the vehicle-mounted conductive bar assembly and is used for driving the vehicle-mounted conductive bar assembly to move so as to realize the pressing and separation of the busbar.
2. The mobile power delivery train of claim 1, wherein the on-board power strip assembly comprises:
a copper soft belt;
two groups of conductive copper plates are arranged at two ends of the copper soft belt respectively;
and the copper bus is connected between the two ends of the copper soft belt.
3. The mobile power transmission trolley according to claim 2, wherein two sets of the conductive copper plates are arranged inside the electrode clamping assembly and closely attached to the furnace end electrodes; the copper bus is connected with the pressing mechanism so as to be driven by the pressing mechanism to be pressed and separated with the busbar.
4. The mobile power delivery train of claim 3, wherein the on-board power strip assembly further comprises:
and the bus side copper plate is fixed on the pressing mechanism and is connected with the copper bus.
5. The mobile power transmission train according to claim 4, wherein the pressing mechanism includes a telescopic cylinder fixed to the train body, and the bus bar-side copper plate is fixed to a telescopic end of the telescopic cylinder.
6. The mobile power delivery vehicle of claim 1, wherein the electrode clamping assembly is of a clamp-type construction.
7. The mobile power delivery train of claim 6, wherein the electrode clamping assembly comprises:
the clamping arm I and the clamping arm II are symmetrically arranged and are used for being abutted against the side wall of the furnace end electrode;
the connecting plate stretches across the clamping arm I and the clamping arm II, one end of the connecting plate is hinged with the clamping arm I, and the other end of the connecting plate is hinged with the clamping arm II;
and the pressing power source is connected between the clamping arm I and the clamping arm II, and is respectively hinged with the clamping arm II of the clamping arm I for driving the clamping and separating of the clamping arm I and the clamping arm II.
8. The mobile power delivery train of claim 1, wherein the vehicle body comprises:
the lower chassis is movably arranged on a preset guide rail;
the upper chassis is movably arranged on the lower chassis, and the moving direction of the upper chassis is vertical to that of the lower chassis, so that the vehicle body can move along two directions of the furnace length and the furnace width of the graphitization furnace.
9. A power supply switching apparatus for a graphitization furnace, characterized by comprising the mobile power transmission train according to any one of claims 1 to 8.
10. The power supply switching device for the graphitization furnace as claimed in claim 9, wherein the movable power transmission vehicles are provided with two groups, namely a positive movable power transmission vehicle corresponding to a positive conductive electrode of the furnace head and a negative movable power transmission vehicle corresponding to a negative conductive electrode of the furnace head, and the positive movable power transmission vehicle and the negative movable power transmission vehicle are connected to the corresponding guide rails in a sliding manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120071884.5U CN214254984U (en) | 2021-01-12 | 2021-01-12 | Mobile electricity transmission vehicle and graphitization furnace power supply switching device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120071884.5U CN214254984U (en) | 2021-01-12 | 2021-01-12 | Mobile electricity transmission vehicle and graphitization furnace power supply switching device |
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| CN214254984U true CN214254984U (en) | 2021-09-21 |
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| CN202120071884.5U Active CN214254984U (en) | 2021-01-12 | 2021-01-12 | Mobile electricity transmission vehicle and graphitization furnace power supply switching device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115313118A (en) * | 2022-07-28 | 2022-11-08 | 青岛宜博铜业集团有限公司 | Ultrahigh-current graphitizing furnace multilayer conductive equipment and control method thereof |
-
2021
- 2021-01-12 CN CN202120071884.5U patent/CN214254984U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115313118A (en) * | 2022-07-28 | 2022-11-08 | 青岛宜博铜业集团有限公司 | Ultrahigh-current graphitizing furnace multilayer conductive equipment and control method thereof |
| CN115313118B (en) * | 2022-07-28 | 2023-05-30 | 青岛宜博铜业集团有限公司 | Multi-layer conductive equipment of graphitization furnace and control method thereof |
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Effective date of registration: 20220413 Address after: No.10 Dazhong West Road, Jiuhua demonstration zone, Xiangtan City, Hunan Province Patentee after: XIANGTAN HUAXIA SPECIAL TYPE TRANSFORMER Co.,Ltd. Address before: 610000 Silicon Valley talent entrepreneurship building, No. 66, Dayu East Road, Pidu District, Chengdu, Sichuan Patentee before: Wei Kaijun |
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Address after: No.10 Dazhong West Road, Jiuhua demonstration zone, Xiangtan City, Hunan Province Patentee after: Hunan Huaxia Tebian Co.,Ltd. Address before: No.10 Dazhong West Road, Jiuhua demonstration zone, Xiangtan City, Hunan Province Patentee before: XIANGTAN HUAXIA SPECIAL TYPE TRANSFORMER Co.,Ltd. |