CN218333434U - 145kV voltage transformer based on clean air - Google Patents
145kV voltage transformer based on clean air Download PDFInfo
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- CN218333434U CN218333434U CN202222535588.3U CN202222535588U CN218333434U CN 218333434 U CN218333434 U CN 218333434U CN 202222535588 U CN202222535588 U CN 202222535588U CN 218333434 U CN218333434 U CN 218333434U
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Abstract
The utility model relates to a 145kV voltage transformer based on clean air, its characterized in that: comprises a bottom plate, an outer shell, a top sealing cover, a transformer body, a conductive tube and a basin-type insulator; clean air is adopted as insulating air, and helium as a tracer gas is added so as to observe the leakage condition; the greenhouse effect value of the clean air is far lower than that of sulfur hexafluoride, so that the environment is protected; the insulating strength of the voltage transformer is increased by increasing the pressure of the clean gas in the voltage transformer to 0.7 MPa; in addition, the clean air has lower liquefaction temperature, and can meet the requirements of wide application and low-temperature areas under the same air pressure.
Description
Technical Field
The utility model relates to a voltage transformer technical field especially relates to a 145kV voltage transformer based on clean air.
Background
Sulfur hexafluoride (SF 6) gas is widely used in electrical equipment because of its excellent insulating properties, but the greenhouse effect of SF6 gas is many times 22800 times that of CO2, and is one of greenhouse gases prohibited from being emitted. With the importance of emission reduction of SF6 greenhouse gas at home and abroad, domestic power grid companies are constantly dedicated to research on relevant technologies such as reduction of usage and emission of SF6 greenhouse gas;
in recent years, research institutes at home and abroad have started to study the insulation characteristics of mixed insulating gases and have attempted to use them in GIS equipment. Under the condition that the structure of the existing mixed gas power equipment is not changed, SF6/N2 mixed gas insulation (SF 6: N2=30%: 70%) is mainly adopted, and the insulation strength of a product is ensured not to be reduced by properly increasing the gas pressure. The purpose of the domestic development of mixed gas insulation technology is to achieve the environment ' relatively ' friendly ' by improving the air pressure without changing the structure of the power equipment, but the final aim is to develop the insulating gas which is completely harmless to the environment. The insulating strength of clean air is only 30% of that of sulfur hexafluoride under the same air pressure condition, and the method for improving the insulating strength of the product at present mainly increases the air pressure of insulating gas.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a 145kV voltage transformer based on clean air can solve general current transformer gas leakage based on SF6 is the problem of easy damage environment.
In order to solve the technical problem, the utility model adopts the technical scheme that: the utility model provides a 145kV voltage transformer based on clean air, its innovation point lies in: comprises a bottom plate, an outer shell, a top sealing cover, a transformer body, a conductive tube and a basin-type insulator;
the lower surface of the bottom plate is provided with a mounting bracket, the bottom plate is provided with an inflation valve port and an explosion-proof port, and a wire outlet box mounting port is arranged at the central position of the bottom plate; an inflation valve is arranged at the inflation valve port on the bottom plate; an explosion-proof sheet is arranged at an explosion-proof port on the bottom plate; an outlet box is arranged at the outlet box mounting opening on the bottom plate;
the outer shell is of a cylindrical structure, and the top end of the outer shell and the bottom end of the outer shell are both provided with openings; the outer shell is arranged on the bottom plate, and the bottom end of the outer shell is installed on the upper surface of the bottom plate through a bolt; the outer shell is filled with clean air;
the top sealing cover is arranged on the top end of the outer shell to seal the top end of the outer shell; the side surface of the top sealing cover is provided with a conductive interface for accommodating the end part of the basin-type insulator to extend out;
the basin-type insulator is horizontally arranged in the top sealing cover, and the end part of the basin-type insulator penetrates through the conductive interface of the top sealing cover to extend out of the top sealing cover; the end part of the basin-type insulator extending out of the top sealing cover is provided with a conducting bar; the basin-type insulator is provided with a shielding cover, and the bottom end of the shielding cover is provided with a fixed port connected with the conductive pipe; the top end of the conductive tube is fixed at the bottom end of the shielding cover on the basin-type insulator, and the bottom end of the conductive tube is connected to the device body;
the device body is provided with three groups and is arranged in the outer shell in an annular array shape, and the bottom end of the device body is locked and fixed on the bottom plate through bolts; the transformer body comprises an iron core, an iron core clamping piece, a primary coil, a secondary coil and a winding framework; the iron core clamping piece is arranged in the outer shell, the bottom end of the iron core clamping piece is locked on the bottom plate through a connecting bolt, and the iron core clamping piece is of a U-shaped structure; the iron core is horizontally arranged in the iron core clamp; the secondary coil is embedded on the iron core; the winding framework is nested on the secondary coil; the primary coil is nested on the winding framework; and the output end of the primary coil penetrates through the conductive tube and is connected to the basin-type insulator.
Furthermore, a sealing groove is arranged on the upper surface of the bottom plate, and a sealing strip is arranged in the sealing groove; the bottom of shell body and the top of shell body all are provided with flange structure.
Furthermore, the trace gas is mixed in the clean air filled in the outer shell, and the air pressure of the clean air is not lower than 0.7MPa.
The utility model has the advantages that:
1) The utility model adopts clean air as insulating air, and adds tracer gas helium to observe leakage condition; the greenhouse effect value of the clean air is far lower than that of sulfur hexafluoride, so that the environment is protected; the insulating strength of the voltage transformer is increased by increasing the pressure of the clean gas in the voltage transformer to 0.7 MPa; in addition, the clean air has lower liquefaction temperature, and can meet the requirements of wide application and low-temperature areas under the same air pressure.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is the utility model discloses a 145kV voltage transformer's based on clean air structure schematic diagram.
Fig. 2 is a schematic view of the local structure of the 145kV voltage transformer body based on clean air.
Detailed Description
To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the attached drawings in the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are part of the embodiments of the present invention, rather than all embodiments. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Fig. 1 and 2 show a 145kV voltage transformer based on clean air, which comprises a bottom plate 1, an outer shell 2, a top cover 3, a body 4, a conductive tube 5 and a basin-type insulator 6.
The lower surface of the bottom plate 1 is provided with a mounting bracket 11, the bottom plate 1 is provided with an inflation valve port and an explosion-proof port, and a wire outlet box mounting port is arranged at the central position of the bottom plate 1; an inflation valve 12 is arranged at the inflation valve port on the bottom plate 1; an explosion-proof sheet 13 is arranged at an explosion-proof port on the bottom plate 1; an outlet box 14 is arranged at the outlet box mounting opening on the bottom plate 1.
The outer shell 2 is of a cylindrical structure, and the top end of the outer shell 2 and the bottom end of the outer shell are both provided with openings; the outer shell 2 is arranged on the bottom plate 1, and the bottom end of the outer shell 2 is installed on the upper surface of the bottom plate 1 through a bolt; the outer casing 2 is filled with clean air.
A top cover 3 is arranged on the top end of the outer shell 2 to seal the top end of the outer shell 2; the side surface of the top sealing cover 2 is provided with a conductive interface for accommodating the end part of the basin-type insulator to extend out.
The basin-type insulator 6 is horizontally arranged in the top sealing cover 3, and the end part of the basin-type insulator 6 passes through the conductive interface of the top sealing cover 3 and extends out of the top sealing cover 3; the end part of the basin-type insulator 6 extending out of the top sealing cover 3 is provided with a conducting bar; a shielding cover 61 is arranged on the basin-type insulator 6, and a fixed port connected with the conductive tube 5 is arranged at the bottom end of the shielding cover 61; the top end of the conductive tube 5 is fixed at the bottom end of the shielding case 61 on the basin-type insulator 6, and the bottom end of the conductive tube 5 is connected on the body 4.
The device bodies 4 are provided with three groups and are arranged in an outer shell in an annular array shape, and the bottom ends of the device bodies 4 are locked and fixed on the bottom plate 1 through bolts; the body 4 includes an iron core 41, an iron core clamp 42, a primary coil 43, a secondary coil 44 and a winding frame 45; the iron core clamping piece 42 is arranged in the outer shell 2, the bottom end of the iron core clamping piece is locked on the bottom plate 1 through a connecting bolt, and the iron core clamping piece 42 is of a U-shaped structure; the iron core 41 is horizontally arranged in the iron core clamp 42; the secondary coil 44 is embedded in the iron core 41; the winding framework 45 is nested on the secondary coil 44; the primary coil 43 is nested on the winding framework 45; the output end of the primary coil 43 is connected to the basin insulator 6 through the conductive tube 5.
A sealing groove is arranged on the upper surface of the bottom plate 1, and a sealing strip is arranged in the sealing groove; the bottom of shell body 2 and the top of shell body 2 all are provided with flange structure.
The clean air filled in the outer shell 2 is mixed with trace gas, and the air pressure of the clean air is not lower than 0.7MPa.
The utility model discloses a theory of operation is: clean air is adopted as insulating air, and helium as a tracer gas is added so as to observe the leakage condition; the greenhouse effect value of the clean air is far lower than that of sulfur hexafluoride, so that the environment is protected; the insulating strength of the voltage transformer is increased by increasing the pressure of the clean gas in the voltage transformer to 0.7 MPa; in addition, the clean air has lower liquefaction temperature, and can meet the requirements of wide application and low-temperature areas under the same air pressure.
It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (3)
1. The utility model provides a 145kV voltage transformer based on clean air which characterized in that: comprises a bottom plate, an outer shell, a top sealing cover, a transformer body, a conductive tube and a basin-type insulator;
the lower surface of the bottom plate is provided with a mounting bracket, the bottom plate is provided with an inflation valve port and an explosion-proof port, and a wire outlet box mounting port is arranged at the central position of the bottom plate; an inflation valve is arranged at the inflation valve port on the bottom plate; an explosion-proof sheet is arranged at an explosion-proof port on the bottom plate; an outlet box is arranged at the outlet box mounting opening on the bottom plate;
the outer shell is of a cylindrical structure, and the top end of the outer shell and the bottom end of the outer shell are both provided with openings; the outer shell is arranged on the bottom plate, and the bottom end of the outer shell is installed on the upper surface of the bottom plate through a bolt; the outer shell is filled with clean air;
the top sealing cover is arranged on the top end of the outer shell to seal the top end of the outer shell; the side surface of the top sealing cover is provided with a conductive interface for accommodating the end part of the basin-type insulator to extend out;
the basin-type insulator is horizontally arranged in the top sealing cover, and the end part of the basin-type insulator penetrates through the conductive interface of the top sealing cover to extend out of the top sealing cover; the end part of the basin-type insulator extending out of the top sealing cover is provided with a conducting bar; the basin-type insulator is provided with a shielding cover, and the bottom end of the shielding cover is provided with a fixed port connected with the conductive pipe; the top end of the conductive tube is fixed at the bottom end of the shielding cover on the basin-type insulator, and the bottom end of the conductive tube is connected to the device body;
the device body is provided with three groups and is arranged in the outer shell in an annular array shape, and the bottom end of the device body is locked and fixed on the bottom plate through bolts; the transformer body comprises an iron core, an iron core clamping piece, a primary coil, a secondary coil and a winding framework; the iron core clamping piece is arranged in the outer shell, the bottom end of the iron core clamping piece is locked on the bottom plate through a connecting bolt, and the iron core clamping piece is of a U-shaped structure; the iron core is horizontally arranged in the iron core clamp; the secondary coil is embedded on the iron core; the winding framework is nested on the secondary coil; the primary coil is nested on the winding framework; and the output end of the primary coil penetrates through the conductive tube and is connected to the basin-type insulator.
2. The clean air-based 145kV voltage transformer according to claim 1, wherein: a sealing groove is formed in the upper surface of the bottom plate, and a sealing strip is arranged in the sealing groove; the bottom of shell body and the top of shell body all are provided with flange structure.
3. The clean air-based 145kV voltage transformer according to claim 1, characterized in that: the trace gas is mixed in the clean air filled in the outer shell, and the air pressure of the clean air is not lower than 0.7MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222535588.3U CN218333434U (en) | 2022-09-26 | 2022-09-26 | 145kV voltage transformer based on clean air |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222535588.3U CN218333434U (en) | 2022-09-26 | 2022-09-26 | 145kV voltage transformer based on clean air |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218333434U true CN218333434U (en) | 2023-01-17 |
Family
ID=84837820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222535588.3U Active CN218333434U (en) | 2022-09-26 | 2022-09-26 | 145kV voltage transformer based on clean air |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218333434U (en) |
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2022
- 2022-09-26 CN CN202222535588.3U patent/CN218333434U/en active Active
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