CN211479834U - Voltage transformer - Google Patents
Voltage transformer Download PDFInfo
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- CN211479834U CN211479834U CN202020587268.0U CN202020587268U CN211479834U CN 211479834 U CN211479834 U CN 211479834U CN 202020587268 U CN202020587268 U CN 202020587268U CN 211479834 U CN211479834 U CN 211479834U
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- coil
- iron core
- fixing plate
- voltage transformer
- supporting component
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Abstract
The utility model relates to a voltage transformer, including the epoxy pouring body, set up coil assembly in the epoxy pouring body, set up the coil supporting component on the coil assembly, the coil assembly includes first iron core, sets up first coil, second iron core on first iron core, sets up the second coil on the second iron core, the coil supporting component including setting up first fixed plate on first coil, setting second fixed plate, backup pad, the bar copper on the second coil, the both ends of backup pad connect respectively on first fixed plate, second fixed plate, the lower extreme of bar copper connect on the middle part of backup pad, the upper end of bar copper is provided with the external screw thread connecting portion, coil assembly, coil supporting component through epoxy pouring into an organic whole and constitute the epoxy pouring body. The utility model has the advantages of simple structure, stable and reliable performance, good insulating property and low partial discharge.
Description
Technical Field
The utility model relates to a mutual-inductor technical field, concretely relates to voltage transformer.
Background
The voltage transformer is an instrument for transforming voltage on a line, and is mainly used for supplying power to a measuring instrument and a relay protection device, measuring voltage, power and electric energy of the line, or protecting valuable equipment, a motor and a transformer in the line when the line fails. The voltage transformer comprises a transformer body and a coil winding assembly arranged in the transformer body, the coil assembly comprises an iron core and coils arranged on the iron core, the structural design of the existing voltage transformer is unreasonable, the distance between two adjacent coils is too small, when epoxy resin is adopted for pouring, the thickness of an epoxy resin layer poured by the voltage transformer is uneven, the epoxy resin layer is easy to crack, and therefore the voltage transformer has the defects of poor insulation performance, unstable performance and high partial discharge.
Disclosure of Invention
An object of the utility model is to overcome prior art's defect, provide a voltage transformer that simple structure, stable performance are reliable, insulating properties is good, low office is put.
In order to achieve the purpose, the utility model adopts a voltage transformer, which comprises an epoxy resin casting body, a coil assembly arranged in the epoxy resin casting body, and a coil supporting component arranged on the coil assembly, the coil assembly comprises a first iron core, a first coil arranged on the first iron core, a second iron core and a second coil arranged on the second iron core, the coil supporting component comprises a first fixing plate arranged on the first coil, a second fixing plate arranged on the second coil, a supporting plate and a copper bar, the two ends of the supporting plate are respectively connected to the first fixing plate and the second fixing plate, the lower end of the copper bar is connected to the middle part of the supporting plate, the upper end of the copper bar is provided with an external thread connecting part, the coil assembly and the coil supporting component are integrally cast by epoxy resin to form the epoxy resin cast body.
The beneficial effect of above-mentioned structure is: be provided with coil supporting component between first coil and second coil, supporting component can keep the interval between first coil and the second coil to guaranteed the insulating distance between first coil and the second coil, be favorable to improving this voltage transformer's partial discharge qualification rate. When pouring epoxy, can connect the upper end of bar copper in mutual-inductor casting mold, can hoist and mount the coil assembly in mutual-inductor casting mold, thereby the epoxy pouring material can enter into completely between first coil, the second coil, thereby the thickness of the epoxy layer of having guaranteed the pouring is even, the fracture that the epoxy layer thickness is uneven caused has been avoided, thereby the yield of this voltage transformer's manufacturing has been improved, the dielectric strength of the epoxy pouring body has also been improved, thereby this combination mutual-inductor's local discharge volume can reach national standard, make whole voltage transformer's life prolong greatly. Therefore, the voltage transformer has the advantages of simple structure, stable and reliable performance, good insulating performance and low partial discharge.
Particularly, the lower end surfaces of the first fixing plate and the second fixing plate are respectively provided with arc-shaped fixing surfaces matched with the first coil and the second coil, and the arc-shaped fixing surfaces of the first fixing plate and the second fixing plate are respectively welded on the outer walls of the first coil and the second coil. Be provided with the arc stationary plane that can laminate on first coil, second coil on first fixed plate, second fixed plate respectively to first fixed plate, second fixed plate are more firm with being connected of first coil, second coil, can effectively avoid the interval undersize between first coil and the second coil, are favorable to improving this voltage transformer insulating properties.
Drawings
Fig. 1 is an internal structure diagram of the embodiment of the present invention.
Fig. 2 is a schematic structural view of a supporting member according to an embodiment of the present invention.
Detailed Description
As shown in fig. 1 and 2, an embodiment of the present invention is a voltage transformer, including an epoxy resin cast body 10, a coil assembly 20 disposed in the epoxy resin cast body 10, and a coil supporting component 30 disposed on the coil assembly 20, wherein the coil assembly 20 includes a first iron core 21, a first coil 22 disposed on the first iron core 21, a second iron core 23, and a second coil 24 disposed on the second iron core 23, the coil supporting component 30 includes a first fixing plate 31 disposed on the first iron core 22, a second fixing plate 32 disposed on the second coil 34, a supporting plate 33, and a copper rod 34, two ends of the supporting plate 33 are respectively connected to the first fixing plate 31 and the second fixing plate 32, a lower end of the copper rod 34 is connected to a middle portion of the supporting plate 33, an external thread connection portion 341 is disposed at an upper end of the copper rod 34, the coil assembly 20, The coil support member 30 is integrally molded by epoxy resin and constitutes the epoxy resin molded body 10. The lower end surfaces of the first fixing plate 31 and the second fixing plate 32 are respectively provided with arc-shaped fixing surfaces 300 matched with the first coil 22 and the second coil 24, and the arc-shaped fixing surfaces 300 of the first fixing plate 31 and the second fixing plate 32 are respectively welded on the outer walls of the first coil 22 and the second coil 24. Be provided with the arc stationary plane that can laminate on first coil, second coil on first fixed plate, second fixed plate respectively to first fixed plate, second fixed plate are more firm with being connected of first coil, second coil, can effectively avoid the interval undersize between first coil and the second coil, are favorable to improving this voltage transformer insulating properties.
Be provided with coil supporting component between first coil and second coil, supporting component can keep the interval between first coil and the second coil to guaranteed the insulating distance between first coil and the second coil, be favorable to improving this voltage transformer's partial discharge qualification rate. When pouring epoxy, can connect the upper end of bar copper in mutual-inductor casting mold, can hoist and mount the coil assembly in mutual-inductor casting mold, thereby the epoxy pouring material can enter into completely between first coil, the second coil, thereby the thickness of the epoxy layer of having guaranteed the pouring is even, the fracture that the epoxy layer thickness is uneven caused has been avoided, thereby the yield of this voltage transformer's manufacturing has been improved, the dielectric strength of the epoxy pouring body has also been improved, thereby this combination mutual-inductor's local discharge volume can reach national standard, make whole voltage transformer's life prolong greatly. Therefore, the voltage transformer has the advantages of simple structure, stable and reliable performance, good insulating performance and low partial discharge.
Claims (2)
1. The utility model provides a voltage transformer, includes epoxy resin casting body, sets up coil assembly in the epoxy resin casting body, sets up the coil supporting component on the coil assembly, its characterized in that: the coil assembly comprises a first iron core, a first coil arranged on the first iron core, a second iron core and a second coil arranged on the second iron core, wherein the coil supporting component comprises a first fixing plate arranged on the first coil, a second fixing plate arranged on the second coil, a supporting plate and a copper bar, the two ends of the supporting plate are respectively connected onto the first fixing plate and the second fixing plate, the lower end of the copper bar is connected onto the middle part of the supporting plate, an external thread connecting part is arranged at the upper end of the copper bar, and the coil assembly and the coil supporting component are integrally cast through epoxy resin and form the epoxy resin casting body.
2. The voltage transformer of claim 1, wherein: the lower end faces of the first fixing plate and the second fixing plate are respectively provided with arc fixing faces matched with the first coil and the second coil, and the arc fixing faces of the first fixing plate and the second fixing plate are respectively welded on the outer walls of the first coil and the second coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020587268.0U CN211479834U (en) | 2020-04-18 | 2020-04-18 | Voltage transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020587268.0U CN211479834U (en) | 2020-04-18 | 2020-04-18 | Voltage transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211479834U true CN211479834U (en) | 2020-09-11 |
Family
ID=72362528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020587268.0U Active CN211479834U (en) | 2020-04-18 | 2020-04-18 | Voltage transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211479834U (en) |
-
2020
- 2020-04-18 CN CN202020587268.0U patent/CN211479834U/en active Active
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