CN112447369A - Transformer on-load tap-changer capable of preventing gear shifting breakdown - Google Patents
Transformer on-load tap-changer capable of preventing gear shifting breakdown Download PDFInfo
- Publication number
- CN112447369A CN112447369A CN202011136372.9A CN202011136372A CN112447369A CN 112447369 A CN112447369 A CN 112447369A CN 202011136372 A CN202011136372 A CN 202011136372A CN 112447369 A CN112447369 A CN 112447369A
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- transformer
- rod
- wall
- load tap
- changer
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/29—Terminals; Tapping arrangements for signal inductances
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/085—Cooling by ambient air
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
- H01F27/306—Fastening or mounting coils or windings on core, casing or other support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F29/00—Variable transformers or inductances not covered by group H01F21/00
- H01F29/02—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings
- H01F29/025—Constructional details of transformers or reactors with tapping on coil or windings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F29/00—Variable transformers or inductances not covered by group H01F21/00
- H01F29/02—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings
- H01F29/04—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings having provision for tap-changing without interrupting the load current
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/0005—Tap change devices
- H01H9/0044—Casings; Mountings; Disposition in transformer housing
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Patch Boards (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The invention belongs to the technical field of transformers, and particularly relates to a transformer on-load tap changer capable of preventing gear shifting breakdown, which aims at solving the problems that when the existing transformer is used for gear shifting, the voltage and current change easily causes the breakdown of the transformer outside a box body, and the internal temperature is easily overhigh during long-time use, so that the circuit is damaged. The invention has simple operation and convenient use, can prevent the gear shifting breakdown of the box body, can control the temperature in the box body and is convenient for people to use.
Description
Technical Field
The invention relates to the technical field of transformers, in particular to a transformer on-load tap changer capable of preventing gear shifting breakdown.
Background
An on-load tap changer refers to a voltage regulating device suitable for operation under transformer excitation or load for changing the tapping connection position of a transformer winding. The basic principle is to realize the switching between taps in the transformer winding under the condition of ensuring that the load current is not interrupted, thereby changing the number of turns of the winding, namely the voltage ratio of the transformer, and finally realizing the purpose of voltage regulation.
When the existing transformer shifts gears, due to the change of voltage and current, breakdown of the transformer external box body is easily caused, and the internal temperature is easily overhigh when the existing transformer is used for a long time, so that the circuit is damaged, and therefore the transformer on-load tap-changer capable of preventing the shifting breakdown is provided.
Disclosure of Invention
The invention aims to solve the defects that the voltage and current change of the existing transformer easily causes breakdown of the transformer external box body when the gear is shifted, and the internal temperature is easily overhigh when the transformer is used for a long time, so that the line is damaged, and provides a transformer on-load tap-changer for preventing gear shifting breakdown.
In order to achieve the purpose, the invention adopts the following technical scheme:
a transformer on-load tap-changer capable of preventing gear shifting breakdown comprises a box body, wherein a positioning shaft is fixedly mounted on the inner wall of the box body, a winding coil is fixedly mounted on the positioning shaft, an external switch is fixedly mounted at the top of the box body and connected with the winding coil, two symmetrically-arranged positioning seats are fixedly mounted on the inner wall of the bottom of the box body, a metal rod is fixedly mounted on the positioning seats, an insulation protection plate is arranged on the inner wall of the box body, a screw rod is rotatably connected to the inner wall of the box body, a moving seat is in threaded connection with the screw rod and is in sliding connection with the metal rod, a conductive rod is in sliding connection with the top of the moving seat, a metal sheet is fixedly mounted at the top end of the conductive rod and is in contact with the winding coil, a rotating plate is fixedly mounted at one end of the screw rod and is in rotating connection with the box body, fixed mounting has a fixing base on the top inner wall of box, and the left side fixed mounting of fixing base has a motor, and fixed mounting has the bull stick on the motor, two through-holes have been seted up at the top of box, and fixed mounting has the dead lever on the inner wall of through-hole, rotates on the dead lever and is connected with the pivot, and the pivot is connected with the bull stick transmission, and fixed mounting has the flabellum in the pivot.
Preferably, the both ends of bull stick are all fixed mounting have first conical gear, and the bottom fixed mounting of pivot has second conical gear, first conical gear and the second conical gear intermeshing that corresponds, and pivoted bull stick can drive two pivots and rotate simultaneously through the intermeshing of first conical gear and second conical gear.
Preferably, the inner wall of the rotating rod is rotatably connected with two positioning boxes which are symmetrically arranged, the positioning boxes are rotatably connected with corresponding rotating shafts, the first bevel gears and the second bevel gears are located in the corresponding positioning boxes, and the positioning boxes are rotatably connected with the rotating rod and the rotating shaft to position the position between the rotating shaft and the rotating rod.
Preferably, the inner wall of the through hole is fixedly provided with a filter plate, the filter plate is matched with the fan blades, and the filter plate can filter flowing air formed by the rotating fan blades.
Preferably, the bottom fixed mounting of box has the bracing piece of four symmetries settings, and the bottom fixed mounting of bracing piece has the backing plate, and the backing plate can support and cushion the box through the bracing piece.
Preferably, the top of the moving seat is provided with a moving hole, the moving hole is connected with the conducting rod in a sliding mode, and the moving hole can be used for positioning the conducting rod through the sliding connection with the conducting rod.
Preferably, the buffer slot has been seted up to the conducting rod bottom, and sliding connection has the connecting rod in the buffer slot, and the bottom fixed mounting of connecting rod has the conducting strip, and the conducting strip contacts with the metal pole, and the metal pole can pass through conducting strip, metal pole and connecting rod and around establishing the coil and form the electrically conductive route.
Preferably, fixed mounting has supporting spring on the top inner wall of dashpot, supporting spring's bottom and connecting rod fixed connection, and supporting spring can support connecting rod and conducting rod through the dashpot for the sheetmetal with around establishing the coil fully contact, conducting strip and metal pole fully contact.
Preferably, the limiting groove has all been seted up on the both sides inner wall of activity hole, and sliding connection has the stopper in the limiting groove, stopper and the conducting rod fixed connection who corresponds, and the sliding connection of limiting groove and stopper can carry on spacingly to the conducting rod.
Preferably, the top fixed mounting of box has the controller, and the controller is connected with temperature monitor, and the controller is connected with the motor, and temperature monitor can start through controller control motor.
Compared with the prior art, the invention has the advantages that:
(1) according to the scheme, the supporting spring is arranged, so that the connecting rod and the conducting rod can be supported through the buffer groove, the metal sheet is in full contact with the winding coil, and the power-off phenomenon is prevented;
(2) the screw rod is connected with the moving seat in a threaded manner, and the moving seat is connected with the metal rod in a sliding manner, so that the rotating plate can drive the moving seat to move, and further drive the metal sheet to adjust the position of the wound coil;
(3) because the first bevel gear and the second bevel gear are meshed with each other, the rotating rod can drive the two rotating shafts to rotate, and then the two fan blades are driven to rotate, so that the fan blades can radiate heat in the box body.
The invention has simple operation and convenient use, can prevent the gear shifting breakdown of the box body, can control the temperature in the box body and is convenient for people to use.
Drawings
Fig. 1 is a schematic structural diagram of an on-load tap changer of a transformer for preventing gear shifting breakdown according to the present invention;
fig. 2 is a schematic side view of an on-load tap changer of a transformer for preventing shift breakdown according to the present invention;
fig. 3 is a schematic structural diagram of a portion a of the on-load tap changer of the transformer for preventing gear shifting breakdown according to the present invention;
fig. 4 is a schematic structural diagram of a part B of an on-load tap changer of a transformer for preventing gear shifting breakdown according to the present invention;
fig. 5 is a schematic structural diagram of a part C of the transformer on-load tap-changer for preventing gear shifting breakdown according to the present invention.
In the figure: 1. a box body; 2. positioning the shaft; 3. winding a coil; 4. an external switch; 5. positioning seats; 6. a metal rod; 7. a movable seat; 8. a screw; 9. rotating the plate; 10. a movable hole; 11. a conductive rod; 12. a connecting rod; 13. a support spring; 14. a metal sheet; 15. a conductive sheet; 16. a buffer tank; 17. a through hole; 18. a filter plate; 19. fixing the rod; 20. a rotating shaft; 21. a fan blade; 22. a fixed seat; 23. a motor; 24. a rotating rod; 25. a positioning box; 26. a first bevel gear; 27. a second bevel gear; 28. an insulating protection plate; 29. a temperature monitor; 30. a support bar; 31. a base plate; 32. and a controller.
Detailed Description
The technical solutions in the embodiments will be described clearly and completely with reference to the drawings in the embodiments, and it is obvious that the described embodiments are only a part of the embodiments, but not all embodiments.
Example one
Referring to fig. 1-5, a transformer on-load tap-changer for preventing gear shifting breakdown comprises a box body 1, a positioning shaft 2 is fixedly installed on the inner wall of the box body 1, a winding coil 3 is fixedly installed on the positioning shaft 2, an external switch 4 is fixedly installed on the top of the box body 1, the external switch 4 is connected with the winding coil 3, two symmetrically-arranged positioning seats 5 are fixedly installed on the inner wall of the bottom of the box body 1, a metal rod 6 is fixedly installed on the positioning seats 5, an insulating protection plate 28 is arranged on the inner wall of the box body 1, a screw rod 8 is rotatably connected on the inner wall of the box body 1, a moving seat 7 is in threaded connection on the screw rod 8, the moving seat 7 is in sliding connection with the metal rod 6, a conductive rod 11 is slidably connected on the top of the moving seat 7, a metal sheet 14 is fixedly installed on the top of the conductive rod 11, the metal sheet, the rotating plate 9 is connected with the box body 1 in a rotating mode, the temperature monitor 29 is fixedly mounted on the inner wall of the bottom of the box body 1, a fixing seat 22 is fixedly mounted on the inner wall of the top of the box body 1, a motor 23 is fixedly mounted on the left side of the fixing seat 22, a rotating rod 24 is fixedly mounted on the motor 23, two through holes 17 are formed in the top of the box body 1, a fixing rod 19 is fixedly mounted on the inner wall of the through hole 17, a rotating shaft 20 is connected to the fixing rod 19 in a rotating mode, the rotating shaft 20 is in transmission connection with the rotating rod 24.
In this embodiment, the two ends of the rotating rod 24 are both fixedly mounted with a first bevel gear 26, the bottom end of the rotating shaft 20 is fixedly mounted with a second bevel gear 27, and the first bevel gear 26 is meshed with the corresponding second bevel gear 27.
In this embodiment, two symmetrically disposed positioning boxes 25 are rotatably connected to the inner wall of the rotating rod 24, the positioning boxes 25 are rotatably connected to the corresponding rotating shafts 20, and the first bevel gear 26 and the second bevel gear 27 are both located in the corresponding positioning boxes 25.
In this embodiment, a filter plate 18 is fixedly mounted on the inner wall of the through hole 17, and the filter plate 18 is matched with the fan blades 21.
In this embodiment, four symmetrically arranged support rods 30 are fixedly installed at the bottom of the box body 1, and a backing plate 31 is fixedly installed at the bottom end of each support rod 30.
In this embodiment, the top of the movable base 7 is provided with a movable hole 10, and the movable hole 10 is slidably connected with the conductive rod 11.
In this embodiment, a buffer slot 16 is formed in the bottom end of the conducting rod 11, a connecting rod 12 is slidably connected in the buffer slot 16, a conducting strip 15 is fixedly mounted at the bottom end of the connecting rod 12, and the conducting strip 15 is in contact with the metal rod 6.
In this embodiment, the inner wall of the top of the buffer slot 16 is fixedly provided with a supporting spring 13, and the bottom end of the supporting spring 13 is fixedly connected with the connecting rod 12.
In this embodiment, the limiting groove has all been seted up on the both sides inner wall of activity hole 10, and sliding connection has the stopper in the limiting groove, stopper and the 11 fixed connection of conducting rod that correspond.
In this embodiment, a controller 32 is fixedly mounted on the top of the box 1, the controller 32 is connected with the temperature monitor 29, and the controller 32 is connected with the motor 23.
Example two
Referring to fig. 1-5, a transformer on-load tap changer capable of preventing gear shifting breakdown comprises a box body 1, a positioning shaft 2 is welded on the inner wall of the box body 1, a winding coil 3 is welded on the positioning shaft 2, an external switch 4 is welded on the top of the box body 1, the external switch 4 is connected with the winding coil 3, two symmetrically arranged positioning seats 5 are welded on the inner wall of the bottom of the box body 1, a metal rod 6 is welded on the positioning seats 5, an insulation protection plate 28 is arranged on the inner wall of the box body 1, a screw 8 is rotatably connected on the inner wall of the box body 1, a movable seat 7 is in threaded connection with the screw 8, the movable seat 7 is in sliding connection with the metal rod 6, a conductive rod 11 is slidably connected on the top of the movable seat 7, a metal sheet 14 is welded on the top of the conductive rod 11, the metal sheet 14 is in contact with the winding coil 3, a, there is temperature monitor 29 through the bolt fastening on the bottom inner wall of box 1, the welding has fixing base 22 on the top inner wall of box 1, there is motor 23 on the left side of fixing base 22 through the bolt fastening, the welding has bull stick 24 on the motor 23, two through-holes 17 have been seted up at the top of box 1, the welding has dead lever 19 on the inner wall of through-hole 17, it is connected with pivot 20 to rotate on the dead lever 19, pivot 20 is connected with the transmission of bull stick 24, and the welding has flabellum 21 in the pivot 20.
In this embodiment, the two ends of the rotating rod 24 are welded with first bevel gears 26, the bottom end of the rotating shaft 20 is welded with second bevel gears 27, the first bevel gears 26 are meshed with the corresponding second bevel gears 27, and the rotating rod 24 can drive the two rotating shafts 20 to rotate simultaneously through the mutual meshing of the first bevel gears 26 and the second bevel gears 27.
In this embodiment, the inner wall of the rotating rod 24 is rotatably connected with two symmetrically-arranged positioning boxes 25, the positioning boxes 25 are rotatably connected with the corresponding rotating shafts 20, the first bevel gears 26 and the second bevel gears 27 are both located in the corresponding positioning boxes 25, and the positioning boxes 25 are rotatably connected with the rotating rod 24 and the rotating shaft 20 to position the positions between the rotating shafts 20 and the rotating rod 24.
In this embodiment, the inner wall of the through hole 17 is welded with a filter plate 18, the filter plate 18 is matched with the fan blades 21, and the filter plate 18 can filter flowing air formed by the rotating fan blades 21.
In this embodiment, the bottom welding of box 1 has the bracing piece 30 of four symmetry settings, and the bottom welding of bracing piece 30 has backing plate 31, and backing plate 31 can support and cushion box 1 through bracing piece 30.
In this embodiment, the top of the moving seat 7 is provided with a moving hole 10, the moving hole 10 is slidably connected to the conducting rod 11, and the moving hole 10 can position the conducting rod 11 through the sliding connection with the conducting rod 11.
In this embodiment, the bottom end of the conducting rod 11 is provided with a buffer slot 16, the buffer slot 16 is internally slidably connected with a connecting rod 12, the bottom end of the connecting rod 12 is welded with a conducting strip 15, the conducting strip 15 is in contact with the metal rod 6, and the metal rod 6 can form a conducting path with the winding coil 3 through the conducting strip 15, the metal rod 6 and the connecting rod 12.
In this embodiment, the welding has supporting spring 13 on the top inner wall of buffer slot 16, and supporting spring 13's bottom and connecting rod 12 fixed connection, and supporting spring 13 can support connecting rod 12 and conducting rod 11 through buffer slot 16 for sheetmetal 14 with around establishing coil 3 abundant contact, conducting strip 15 and metal pole 6 abundant contact.
In this embodiment, all seted up the spacing groove on the both sides inner wall of activity hole 10, sliding connection has the stopper in the spacing groove, stopper and the 11 fixed connection of conducting rod that correspond, and the sliding connection of spacing groove and stopper can carry on spacingly to conducting rod 11.
In this embodiment, the top of box 1 is fixed with controller 32 through the bolt, and controller 32 is connected with temperature monitor 29, and controller 32 is connected with motor 23, and temperature monitor 29 can start through controller 32 control motor 23.
In this embodiment, when a gear is to be shifted, the rotating plate 9 is rotated, the rotating plate 9 drives the screw rod 8 to rotate, the screw rod 8 drives the moving seat 7 to move through the threaded connection with the moving seat 7, the moving seat 7 drives the conducting rod 11 to move through the movable hole 10, the conducting rod 11 drives the metal sheet 14 to move, so as to adjust the position of the metal sheet 14 at the winding coil 3, and further to shift the gear more conveniently, meanwhile, the supporting spring 13 is arranged to support the connecting rod 12 and the conducting rod 11 through the buffer slot 16, so that the metal sheet 14 is in full contact with the winding coil 3, and the power-off phenomenon is prevented, when the temperature monitor 29 monitors that the temperature in the box 1 is too high, the temperature monitor 29 starts the switch of the motor 23 through the controller 32, the output shaft of the motor 23 drives the rotating rod 24 to rotate, the rotating rod 24 drives the rotating shaft 20 to rotate through the mutual engagement of the first bevel gear 26 and the second bevel gear 27, the pivoted pivot 20 drives flabellum 21 and rotates to make flabellum 21 can cool down the temperature in the box 1, carry out voltage protection when setting up of insulating protection board 28 simultaneously can be to the gear shifting in the box 1, the people of being convenient for use. All structures in this application can carry out the selection of material and length according to actual use condition, and the attached drawing is schematic structure chart, and specific actual dimensions can make appropriate adjustment.
Claims (10)
1. The utility model provides a transformer that prevents gear shifting puncture has on-load tap-changer, includes box (1), its characterized in that, fixed mounting has location axle (2) on the inner wall of box (1), and fixed mounting has around establishing coil (3) on location axle (2), the top fixed mounting of box (1) has external switch (4), and external switch (4) are connected with around establishing coil (3), fixed mounting has two positioning seats (5) that the symmetry set up on the bottom inner wall of box (1), and fixed mounting has metal pole (6) on positioning seat (5), be equipped with insulating protection board (28) on the inner wall of box (1), it is connected with screw rod (8) to rotate on the inner wall of box (1), and threaded connection has removal seat (7) on screw rod (8), removes seat (7) and metal pole (6) sliding connection, the top sliding connection that removes seat (7) has conducting rod (11), the top end of the conducting rod (11) is fixedly provided with a metal sheet (14), the metal sheet (14) is contacted with the winding coil (3), one end of the screw rod (8) is fixedly provided with a rotating plate (9), the rotating plate (9) is rotationally connected with the box body (1), a temperature monitor (29) is fixedly arranged on the inner wall of the bottom of the box body (1), a fixed seat (22) is fixedly arranged on the inner wall of the top of the box body (1), a motor (23) is fixedly arranged on the left side of the fixed seat (22), a rotating rod (24) is fixedly arranged on the motor (23), two through-holes (17) have been seted up at the top of box (1), and fixed mounting has dead lever (19) on the inner wall of through-hole (17), rotates on dead lever (19) and is connected with pivot (20), and pivot (20) are connected with bull stick (24) transmission, and fixed mounting has flabellum (21) on pivot (20).
2. The on-load tap-changer of the transformer for preventing gear shifting breakdown according to claim 1, wherein both ends of the rotating rod (24) are fixedly provided with a first bevel gear (26), the bottom end of the rotating shaft (20) is fixedly provided with a second bevel gear (27), and the first bevel gear (26) is meshed with the corresponding second bevel gear (27).
3. The on-load tap-changer of the transformer for preventing gear shifting breakdown according to claim 1, characterized in that two symmetrically arranged positioning boxes (25) are rotatably connected to the inner wall of the rotating rod (24), the positioning boxes (25) are rotatably connected to the corresponding rotating shaft (20), and the first bevel gear (26) and the second bevel gear (27) are both located in the corresponding positioning boxes (25).
4. The on-load tap-changer of a transformer for preventing gear shifting breakdown according to claim 1, characterized in that a filter plate (18) is fixedly mounted on the inner wall of the through hole (17), and the filter plate (18) is matched with the fan blades (21).
5. The on-load tap-changer of the transformer for preventing gear shifting breakdown according to claim 1, characterized in that four symmetrically arranged support rods (30) are fixedly installed at the bottom of the box body (1), and a backing plate (31) is fixedly installed at the bottom ends of the support rods (30).
6. The on-load tap-changer of the transformer for preventing gear shifting breakdown according to claim 1, characterized in that a movable hole (10) is opened at the top of the movable base (7), and the movable hole (10) is slidably connected with the conductive rod (11).
7. The on-load tap-changer of the transformer for preventing shift breakdown according to claim 1, wherein a buffer groove (16) is formed at the bottom end of the conducting rod (11), a connecting rod (12) is slidably connected in the buffer groove (16), a conducting strip (15) is fixedly installed at the bottom end of the connecting rod (12), and the conducting strip (15) is in contact with the metal rod (6).
8. The on-load tap-changer of the transformer for preventing gear shifting breakdown according to claim 7, characterized in that a supporting spring (13) is fixedly installed on the inner wall of the top of the buffer tank (16), and the bottom end of the supporting spring (13) is fixedly connected with the connecting rod (12).
9. The on-load tap-changer of the transformer for preventing shift breakdown according to claim 6, wherein the inner walls of the two sides of the movable hole (10) are both provided with a limiting groove, a limiting block is connected in the limiting groove in a sliding manner, and the limiting block is fixedly connected with the corresponding conducting rod (11).
10. The on-load tap-changer of the transformer for preventing gear shifting breakdown according to claim 1, characterized in that a controller (32) is fixedly installed on the top of the box body (1), the controller (32) is connected with a temperature monitor (29), and the controller (32) is connected with a motor (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011136372.9A CN112447369B (en) | 2020-10-22 | 2020-10-22 | Transformer on-load tap-changer capable of preventing gear shifting breakdown |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011136372.9A CN112447369B (en) | 2020-10-22 | 2020-10-22 | Transformer on-load tap-changer capable of preventing gear shifting breakdown |
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| Publication Number | Publication Date |
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| CN112447369A true CN112447369A (en) | 2021-03-05 |
| CN112447369B CN112447369B (en) | 2023-03-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011136372.9A Active CN112447369B (en) | 2020-10-22 | 2020-10-22 | Transformer on-load tap-changer capable of preventing gear shifting breakdown |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113299457A (en) * | 2021-05-18 | 2021-08-24 | 国网山东省电力公司海阳市供电公司 | Debugging device and method for excitation capacitance-regulating transformer |
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|---|---|---|---|---|
| CN202034211U (en) * | 2011-04-12 | 2011-11-09 | 山东辉煌电力设备制造有限公司 | Intelligent onload voltage-regulation switch for transformer |
| CN204348498U (en) * | 2015-02-13 | 2015-05-20 | 高照远 | Dividual connecting switch for transformer device |
| CN108068272A (en) * | 2016-11-18 | 2018-05-25 | 柳道万和(苏州)热流道系统有限公司 | Housing assembly and with its Hot Runner System |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113299457A (en) * | 2021-05-18 | 2021-08-24 | 国网山东省电力公司海阳市供电公司 | Debugging device and method for excitation capacitance-regulating transformer |
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| Publication number | Publication date |
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| CN112447369B (en) | 2023-03-24 |
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Effective date of registration: 20220111 Address after: 264000 Jiefang Road 158, Zhifu District, Yantai, Shandong Applicant after: STATE GRID SHANDONG ELECTRIC POWER COMPANY YANTAI POWER SUPPLY Co. Address before: 264000 Jiefang Road 158, Zhifu District, Yantai, Shandong Applicant before: STATE GRID SHANDONG ELECTRIC POWER COMPANY YANTAI POWER SUPPLY Co. Applicant before: STATE GRID CORPORATION OF CHINA |
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