CN216528289U - Energy supply isolation transformer - Google Patents
Energy supply isolation transformer Download PDFInfo
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- CN216528289U CN216528289U CN202122958938.2U CN202122958938U CN216528289U CN 216528289 U CN216528289 U CN 216528289U CN 202122958938 U CN202122958938 U CN 202122958938U CN 216528289 U CN216528289 U CN 216528289U
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- voltage coil
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- insulating cylinder
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Abstract
And (4) supplying energy to the isolation transformer. Relates to the technical field of transformers. The structure is reasonable, and the shielding performance and the safety performance can be effectively improved. The insulation device comprises an insulation cylinder and a shell arranged below the insulation cylinder, wherein the bottom of the insulation cylinder is fixedly connected with and communicated with the top of the shell, and an equalizing ring is arranged at the joint of the insulation cylinder and the top of the shell; the high-voltage coil and the low-voltage coil are arranged in the shell, sulfur hexafluoride gas is filled between the high-voltage coil and the low-voltage coil, no solid medium exists between the high-voltage coil and the low-voltage coil, a lead is arranged on the high-voltage coil, the lead extends to the top of the insulating cylinder and is fixedly connected with the top plate, an electrode tube is further sleeved outside the lead, a first shielding cover and two second shielding covers are further arranged in the shell, the first shielding cover is located below the high-voltage coil, and the two second shielding covers are respectively located on two sides of the low-voltage coil.
Description
Technical Field
The utility model relates to the technical field of transformers, in particular to an energy supply isolation transformer.
Background
The high-voltage direct-current transmission is a mode widely popularized in national grids in recent years, and has the advantages of no inductive reactance, capacitive reactance, no synchronization problem and the like of direct current, low running electric energy loss, remarkable transmission energy-saving effect and suitability for high-power long-distance transportation. The converter station is a station which is set up for converting alternating current into direct current or converting direct current into alternating current and reaching a power system for safe and stable circuit transmission in high-voltage direct current transmission. The control and protection device is partially positioned at the high potential of the line, and an energy supply transformer is needed for supplying power to the devices, so that the characteristics of the control and protection device are obvious, namely the high potential is low voltage, the output voltage is normally 1-5V, and the potential is consistent with the corresponding line voltage and can reach +/-1000 kV at most.
However, after long-term use, the shielding performance and safety performance of the energy supply transformer are greatly attenuated, and the equipment is easily damaged, so that the optimization of the existing basic structure of the energy supply transformer becomes a technical problem to be solved by the technical personnel in the field.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model provides the energy supply isolation transformer which is reasonable in structure and can effectively improve the shielding performance and the safety performance.
The utility model is realized by adopting the following technical scheme: the energy supply isolation transformer comprises an insulation cylinder and a shell arranged below the insulation cylinder, wherein the bottom of the insulation cylinder is fixedly connected with and communicated with the top of the shell, and a grading ring is arranged at the joint of the insulation cylinder and the top of the shell;
the high-voltage coil and the low-voltage coil are arranged in the shell, sulfur hexafluoride gas is filled between the high-voltage coil and the low-voltage coil, no solid medium exists between the high-voltage coil and the low-voltage coil, a lead is arranged on the high-voltage coil, the lead extends to the top of the insulating cylinder and is fixedly connected with the top plate, an electrode tube is further sleeved outside the lead, a first shielding cover and two second shielding covers are further arranged in the shell, the first shielding cover is located below the high-voltage coil, and the two second shielding covers are respectively located on two sides of the low-voltage coil.
The radial section of the first shielding cover is parallel to the radial section of the insulating cylinder, and the radial section of the second shielding cover is perpendicular to the radial section of the insulating cylinder.
The outside of insulating cylinder is equipped with the outer electrode, the inside of insulating cylinder is equipped with the inner electrode, the outer electrode with the inner electrode all is located the downside of insulating cylinder.
The bottom of the shell is provided with a lower base, the top of the insulating cylinder is provided with an upper base, and the adjacent upper base and the lower base are fastened through bolts.
The insulating cylinder with the linking department of shell still the interval is equipped with a plurality of reinforcing plates, one side of reinforcing plate with can dismantle the connection between the shell, the other end laminating of reinforcing plate the outer wall of insulating cylinder.
Compared with the prior art, the transformer mounting structure has the advantages that compared with the existing mounting structure, the high potential and the grounding potential can be effectively separated, the middle part is shielded by the equalizing ring, and the stability of the whole electric field of the transformer is effectively improved; through the arrangement of the first shielding cover and the second shielding cover, the overall shielding performance of the transformer is improved, the structure is reasonable, and meanwhile, sulfur hexafluoride gas is filled, so that the electrical insulation performance of the transformer is obviously improved, the equipment can stably and reliably operate for a long time, and the safety performance of the transformer is improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
in the figure: 1. an insulating cylinder; 2. a housing; 3. a grading ring; 4. a high-voltage coil; 5. a low-voltage coil; 6. a lead wire; 7. a top plate; 8. an electrode tube; 9. a first shield case; 10. a second shield case; 11. an outer electrode; 12. an inner electrode; 13. a lower base; 14. an upper base; 15. a reinforcing plate.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.
As shown in fig. 1, the energy supply isolation transformer comprises an insulation cylinder 1 and a shell 2 arranged below the insulation cylinder 1, wherein the shell 2 is made of aluminum alloy, and has the characteristics of high fatigue resistance, high corrosion resistance and good welding performance, so that the overall structure of the transformer is more stable, the bottom of the insulation cylinder 1 is fixedly connected and communicated with the top of the shell 2, and a grading ring 3 is arranged at the joint of the insulation cylinder 1 and the top of the shell 2; compared with the existing installation structure, the high-potential and grounding potential can be effectively separated, the middle part of the high-potential and grounding potential is shielded by the equalizing ring 3, and the stability of the whole electric field of the transformer is effectively improved;
a high-voltage coil 4 and a low-voltage coil 5 are arranged in the shell 2, sulfur hexafluoride gas is filled between the high-voltage coil 4 and the low-voltage coil 5, no solid medium exists, a lead 6 is arranged on the high-voltage coil 4, the lead 6 extends to the top of the insulating cylinder 1 and is fixedly connected with a top plate 7, an electrode tube 8 is further sleeved outside the lead 6, the lead 6 is wrapped by the electrode tube 8, the lead 6 is not exposed outside, and the uniformity of an electric field of the lead 6 is effectively improved; still be equipped with a first shield cover 9 and two second shield covers 10 in the shell 2, first shield cover 9 is located high voltage coil 4's below, two second shield cover 10 is located respectively the both sides of low voltage coil 5. Through the arrangement of the first shielding cover 9 and the second shielding cover 10, the overall shielding performance of the transformer is improved, the structure is reasonable, and meanwhile, sulfur hexafluoride gas is filled, so that the electrical insulation performance of the transformer is obviously improved, the equipment can stably and reliably operate for a long time, and the safety performance of the transformer is improved.
The radial section of the first shield cover 9 is parallel to that of the insulation cylinder 1, and the radial section of the second shield cover 10 is perpendicular to that of the insulation cylinder 1. Therefore, the insulating property of the transformer is effectively improved.
The outer portion of insulating cylinder 1 is equipped with outer electrode 11, the inside of insulating cylinder 1 is equipped with inner electrode 12, outer electrode 11 with inner electrode 12 all is located the downside of insulating cylinder 1.
The bottom of the shell 2 is provided with a lower base 13, the top of the insulating cylinder 1 is provided with an upper base 14, and the adjacent upper base 14 and the lower base 13 are fastened through bolts. That is to say, through the bolted connection of upper base 14 and lower base 13, realize the series connection of a plurality of transformers, simultaneously, assemble the shielding cover between two adjacent transformers, further improve the insulating properties of transformer.
Insulating cylinder 1 with the linking department of shell 2 still the interval is equipped with a plurality of reinforcing plates 15, one side of reinforcing plate 15 with can dismantle the connection between the shell 2, the other end laminating of reinforcing plate 15 the outer wall of insulating cylinder 1. The reinforcing plate 15 is provided to improve the reliability of connection between the insulating cylinder 1 and the housing 2.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.
Claims (5)
1. Energy supply isolation transformer, its characterized in that: the device comprises an insulating cylinder and a shell arranged below the insulating cylinder, wherein the bottom of the insulating cylinder is fixedly connected with and communicated with the top of the shell, and a grading ring is arranged at the joint of the insulating cylinder and the top of the shell;
the high-voltage coil and the low-voltage coil are arranged in the shell, sulfur hexafluoride gas is filled between the high-voltage coil and the low-voltage coil, no solid medium exists between the high-voltage coil and the low-voltage coil, a lead is arranged on the high-voltage coil, the lead extends to the top of the insulating cylinder and is fixedly connected with the top plate, an electrode tube is further sleeved outside the lead, a first shielding cover and two second shielding covers are further arranged in the shell, the first shielding cover is located below the high-voltage coil, and the two second shielding covers are respectively located on two sides of the low-voltage coil.
2. The energy supply isolation transformer of claim 1, wherein: the radial section of the first shielding cover is parallel to the radial section of the insulating cylinder, and the radial section of the second shielding cover is perpendicular to the radial section of the insulating cylinder.
3. The energy supply isolation transformer of claim 1, wherein: the outside of insulating cylinder is equipped with the outer electrode, the inside of insulating cylinder is equipped with the inner electrode, the outer electrode with the inner electrode all is located the downside of insulating cylinder.
4. The energy supply isolation transformer of claim 1, wherein: the bottom of the shell is provided with a lower base, the top of the insulating cylinder is provided with an upper base, and the adjacent upper base and the lower base are fastened through bolts.
5. The energy supply isolation transformer of claim 1, wherein: the insulating cylinder with the linking department of shell still the interval is equipped with a plurality of reinforcing plates, one side of reinforcing plate with can dismantle the connection between the shell, the other end laminating of reinforcing plate the outer wall of insulating cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122958938.2U CN216528289U (en) | 2021-11-29 | 2021-11-29 | Energy supply isolation transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122958938.2U CN216528289U (en) | 2021-11-29 | 2021-11-29 | Energy supply isolation transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216528289U true CN216528289U (en) | 2022-05-13 |
Family
ID=81462756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122958938.2U Active CN216528289U (en) | 2021-11-29 | 2021-11-29 | Energy supply isolation transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216528289U (en) |
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2021
- 2021-11-29 CN CN202122958938.2U patent/CN216528289U/en active Active
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