CN211404267U - Glass fiber reinforced plastic capacitive type large-current transformer bushing - Google Patents
Glass fiber reinforced plastic capacitive type large-current transformer bushing Download PDFInfo
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- CN211404267U CN211404267U CN202020463773.4U CN202020463773U CN211404267U CN 211404267 U CN211404267 U CN 211404267U CN 202020463773 U CN202020463773 U CN 202020463773U CN 211404267 U CN211404267 U CN 211404267U
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- aluminum pipe
- pressure equalizing
- current transformer
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Abstract
A glass fiber reinforced plastic capacitive large-current transformer bushing comprises a copper conductor, a sealing ring, an air end voltage-sharing seat, an aluminum pipe, a capacitor core, a composite outer sleeve, a flange, an oil end insulating ring and an oil end voltage-sharing ball. The utility model provides a large current transformer bushing, between copper conductor and the air end voltage-sharing seat, all through a plurality of bolted connection between air end voltage-sharing seat and the aluminum pipe, the contact surface all is equipped with the sealing washer, and bolted connection is firm reliable, and then guarantees reliably sealed, and the performance can not change under the long-term use. An oil end insulating ring is arranged at the lower end between the copper conductor and the aluminum pipe, a plurality of oil through holes are formed in the oil end insulating ring, an oil end pressure equalizing ball is connected with the end portion of the aluminum pipe through a plurality of bolts, the oil end pressure equalizing ball is positioned and fixed in position after being installed, and due to the fact that no spring pressing device is arranged, the height of the oil end pressure equalizing ball is small, the total height of the part below the flange can be reduced, or the insulation distance can be increased under the total height of the part below the same flange.
Description
The technical field is as follows:
the utility model relates to a heavy current transformer bushing, concretely relates to glass steel electric capacity type heavy current transformer bushing.
Background art:
from the past, the glass fiber reinforced plastic capacitive large-current transformer bushing adopted by the power transformer generally uses a glue-impregnated fiber capacitor core wound on a thin-wall aluminum pipe, a spring pressing device is arranged at the lower end of a metal conductor for fastening after the metal conductor is arranged in a capacitor core barrel, the spring pressing device is positioned by a bolt, and a sealing ring between the metal conductor and the capacitor core is pressed by the elasticity of the spring to realize sealing. The fastening connection and the sealing between the metal conductor and the capacitor core of the structure completely depend on the elastic force of the spring, the spring fatigue can occur under the long-term use, the stability and the sealing performance of the overall structure of the sleeve are further influenced, and the hidden danger is brought to the use of the transformer sleeve.
The invention content is as follows:
the utility model aims at providing a glass steel electric capacity type heavy current transformer bushing, this transformer bushing structural design is reasonable, sealed good, stable performance, operation are reliable.
The utility model provides a pair of glass steel electric capacity type heavy current transformer bushing, including copper conductor, sealing washer, air terminal equalizer seat, aluminum pipe, electric capacity core, compound overcoat, flange, oil terminal insulating ring, oil terminal equalizer ball. The method is characterized in that: sealing rings are arranged between the copper conductor and the air end pressure equalizing seat, between the air end pressure equalizing seat and the aluminum pipe and between the air end pressure equalizing seat and the capacitor core; the copper conductor is connected with the air end pressure equalizing seat through a plurality of bolts, and the air end pressure equalizing seat is connected with the aluminum pipe through a plurality of bolts.
The capacitor core is formed by curing glue-dipped fibers wound on an aluminum pipe, and is bonded into a whole after curing and forming.
The aluminum pipe is a thick-wall aluminum pipe with the thickness of about 20 mm.
And the capacitor core and the flange are packaged by epoxy pouring sealant.
The sealing ring is an O-shaped sealing ring made of nitrile rubber.
And the oil end insulating ring is arranged at the lower end between the copper conductor and the aluminum pipe, and the oil end voltage-sharing ball is installed to position and fix the oil end insulating ring.
The oil end insulating ring is made of epoxy resin, and a plurality of oil through holes are formed in the oil end insulating ring.
The oil end pressure equalizing ball is connected with the aluminum pipe through a plurality of bolts.
The composite coat is composed of a silicon rubber umbrella skirt.
According to the utility model provides a pair of glass steel electric capacity type heavy current transformer bushing has following advantage:
1. all through a plurality of bolted connection between copper conductor and the air end voltage-sharing seat, between air end voltage-sharing seat and the aluminum pipe, the contact surface is equipped with the sealing washer, and bolted connection is firm reliable, and then guarantees reliably sealed, and the performance can not change under the long-term use.
2. The capacitor core is formed by winding glue-dipped fibers on a thick-wall aluminum pipe with the thickness of about 20mm and solidifying, the air end pressure equalizing seat and the oil end pressure equalizing ball can be connected with the end part of the aluminum pipe through a plurality of bolts through the thick-wall aluminum pipe, the connection reliability is improved, and the thick-wall aluminum pipe is also favorable for heat dissipation of a sleeve.
3. The capacitor core is a glass fiber reinforced plastic capacitor type structure, and has the advantages of uniform field intensity distribution, stable insulating property, light weight and the like.
4. The oil end pressure equalizing ball arranged at the lower end of the capacitor core has a simple structure, and because no spring pressing device is arranged, the height of the oil end pressure equalizing ball is smaller, so that the total height of the part below the flange can be reduced, or the insulation distance can be increased under the same total height of the part below the flange.
5. The composite coat is composed of the silicon rubber umbrella skirt and has the advantages of high mechanical strength, strong pollution resistance, good explosion resistance and the like.
Description of the drawings:
fig. 1 is a schematic diagram of an embodiment structure provided by a glass fiber reinforced plastic capacitive large-current transformer bushing according to the present invention, which includes a copper conductor 1, a sealing ring 2, a sealing ring 3, a sealing ring 4, an air-end voltage-equalizing seat 5, an aluminum pipe 6, a capacitor core 7, a composite outer sleeve 8, a flange 9, an oil-end insulating ring 10, and an oil-end voltage-equalizing ball 11.
The specific implementation mode is as follows:
an embodiment of the utility model is shown in figure 1, including copper conductor 1, sealing washer 2, sealing washer 3, sealing washer 4, air end pressure equalizing seat 5, aluminum pipe 6, electric capacity core 7, compound overcoat 8, flange 9, oil end insulating ring 10, oil end pressure equalizing ball 11.
A sealing ring 2 is arranged between the copper conductor 1 and the air end pressure equalizing seat 5, a sealing ring 3 is arranged between the air end pressure equalizing seat 5 and the aluminum pipe 6, and a sealing ring 4 is arranged between the air end pressure equalizing seat 5 and the capacitor core 7; the copper conductor 1 is connected with the air end pressure equalizing seat 5 through a plurality of bolts, and the air end pressure equalizing seat 5 is connected with the aluminum pipe 6 through a plurality of bolts.
The aluminum pipe 6 is a thick-wall aluminum pipe with the thickness of about 20mm, and the capacitor core 7 is formed by winding glue-dipped fibers on the aluminum pipe 6 and solidifying the glue-dipped fibers.
And the capacitor core 7 and the flange 9 are packaged by epoxy pouring sealant.
An oil end insulating ring 10 is arranged at the lower end between the copper conductor 1 and the aluminum pipe 6, the oil end voltage-sharing ball 11 is connected with the aluminum pipe 6 through a plurality of bolts, and the oil end insulating ring 10 is positioned and fixed after the oil end voltage-sharing ball 11 is installed.
The oil end insulating ring 10 is made of epoxy resin, and a plurality of oil through holes are formed in the oil end insulating ring.
The composite coat 8 is composed of a silicon rubber umbrella skirt.
The above preferred embodiments are provided for illustrative purposes only and are not intended to limit the present invention. The present invention is not limited to the above embodiments, but may be modified in various ways without departing from the spirit and scope of the present invention.
Claims (5)
1. A glass fiber reinforced plastic capacitive large-current transformer bushing comprises a copper conductor, a sealing ring, an air end voltage-sharing seat, an aluminum pipe, a capacitor core, a composite outer sleeve, a flange, an oil end insulating ring and an oil end voltage-sharing ball; the method is characterized in that: sealing rings are arranged between the copper conductor and the air end pressure equalizing seat, between the air end pressure equalizing seat and the aluminum pipe and between the air end pressure equalizing seat and the capacitor core; the copper conductor is connected with the air end pressure equalizing seat through a plurality of bolts, and the air end pressure equalizing seat is connected with the aluminum pipe through a plurality of bolts.
2. The glass reinforced plastic capacitive high current transformer bushing of claim 1, wherein: the aluminum pipe is a thick-wall aluminum pipe with the thickness of about 20 mm.
3. The glass reinforced plastic capacitive high current transformer bushing of claim 1, wherein: and the oil end insulating ring is arranged at the lower end between the copper conductor and the aluminum pipe, and the oil end voltage-sharing ball is installed to position and fix the oil end insulating ring.
4. The glass reinforced plastic capacitive high current transformer bushing of claim 1, wherein: the oil end pressure equalizing ball and the end part of the aluminum pipe are connected with the end part of the aluminum pipe through a plurality of bolts.
5. The glass reinforced plastic capacitive high current transformer bushing of claim 1, wherein: the oil end insulating ring is made of epoxy resin, and a plurality of oil through holes are formed in the oil end insulating ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020463773.4U CN211404267U (en) | 2020-03-31 | 2020-03-31 | Glass fiber reinforced plastic capacitive type large-current transformer bushing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020463773.4U CN211404267U (en) | 2020-03-31 | 2020-03-31 | Glass fiber reinforced plastic capacitive type large-current transformer bushing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211404267U true CN211404267U (en) | 2020-09-01 |
Family
ID=72215393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020463773.4U Active CN211404267U (en) | 2020-03-31 | 2020-03-31 | Glass fiber reinforced plastic capacitive type large-current transformer bushing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211404267U (en) |
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2020
- 2020-03-31 CN CN202020463773.4U patent/CN211404267U/en active Active
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