CN211604892U - Wedge-shaped full-sealed flange-mounted transformer bushing - Google Patents
Wedge-shaped full-sealed flange-mounted transformer bushing Download PDFInfo
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- CN211604892U CN211604892U CN202020472162.6U CN202020472162U CN211604892U CN 211604892 U CN211604892 U CN 211604892U CN 202020472162 U CN202020472162 U CN 202020472162U CN 211604892 U CN211604892 U CN 211604892U
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Abstract
The utility model relates to the field of transformers, and provides a wedge-shaped totally-sealed flange-mounted transformer bushing, which comprises a conducting rod, an insulating sheath and a porcelain bushing which are arranged in sequence from inside to outside; the lower part of the porcelain bushing is provided with an annular convex part protruding outwards, and the vertical section of the convex part is rectangular; a wedge-shaped sealing gasket is arranged on the outer side of the porcelain sleeve, the upper part of the wedge-shaped sealing gasket is arranged in contact with the lower part of the protruding part, and the width of the upper part of the wedge-shaped sealing gasket is larger than that of the cross section of the protruding part; an aluminum alloy flange is further arranged on the outer side of the wedge-shaped sealing gasket and the outer side of the protruding portion, epoxy adhesive is further arranged between the wedge-shaped sealing gasket and the protruding portion, and the wedge-shaped sealing gasket, the protruding portion of the porcelain sleeve and the aluminum alloy flange are fixed into a whole through the epoxy adhesive. The utility model discloses sealing performance is good, and no seepage does not have partial discharge to exist under the operating voltage, makes the product have reliable electrical property.
Description
Technical Field
The utility model relates to a transformer field provides a wedge totally enclosed clamps flange formula of structure and puts transformer bushing in low office very much.
Background
A flange type transformer bushing of 40.5kV or below, which is commonly used in the domestic transformer industry, is usually formed by bonding an aluminum alloy flange and a porcelain bushing together by adopting cements, resins and the like. The mounting mode is that the sealing rubber pad is pressed and mounted at the porcelain table to meet the sealing requirement, because the porcelain sleeve is a brittle material, the porcelain table is easy to damage due to the existence of shearing force during pressing, the aluminum alloy flange and the porcelain sleeve are bonded by cement adhesive, the important defects of unstable bonding effect, poor mechanical strength, no sealing effect at the bonding position and the like exist, and the defects of large mounting size and unattractive appearance of the sleeve are also existed. In order to reduce the mounting size of the flanges, it is now conventional practice to choose a seal between the metal flanges. This causes oil leakage at the flange joint of the product. Therefore, the flange type transformer bushing in the prior art cannot meet the requirements of the power industry on higher performance indexes of the transformer product, and particularly, the improvement and the improvement on the safety performance, the sealing performance, the mechanical performance and the like are urgently needed. The safe operation of the power grid is guaranteed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a wedge omniseal clamps flange formula transformer bushing, has solved the sealed problem of flange formula transformer bushing flange bonding department.
The utility model discloses technical scheme as follows:
the utility model provides a wedge-shaped totally-sealed flange-mounted transformer bushing, which comprises a conducting rod, an insulating sheath and a porcelain bushing which are arranged in sequence from inside to outside; the lower part of the porcelain bushing is provided with an annular convex part protruding outwards, and the vertical section of the convex part is rectangular; a wedge-shaped sealing gasket is arranged on the outer side of the porcelain sleeve, the upper part of the wedge-shaped sealing gasket is arranged in contact with the lower part of the protruding part, and the width of the upper part of the wedge-shaped sealing gasket is larger than that of the cross section of the protruding part; an aluminum alloy flange is further arranged on the outer side of the wedge-shaped sealing gasket and the outer side of the protruding portion, epoxy adhesive is further arranged between the wedge-shaped sealing gasket and the protruding portion, and the wedge-shaped sealing gasket, the protruding portion of the porcelain sleeve and the aluminum alloy flange are fixed into a whole through the epoxy adhesive.
Specifically, a wedge-shaped sealing gasket is clamped between the aluminum alloy flange and the porcelain sleeve under the action of certain pressure, so that the deformation of the wedge-shaped sealing gasket is ensured to meet the sealing requirement. After the aluminum alloy flange and the porcelain sleeve are clamped, epoxy adhesive is poured between the aluminum alloy flange and the porcelain sleeve to enable the aluminum alloy flange and the porcelain sleeve to form an integral structure, and the stable sealing requirement is met.
Further, the oblique angle of the wedge-shaped sealing gasket is smaller than the friction angle between the aluminum alloy flange and the wedge-shaped sealing gasket.
In particular, the self-locking of the aluminum alloy flange after clamping is ensured not to be loosened
Further, a semiconductor glaze layer is arranged on the outer layer from the bottom umbrella of the porcelain sleeve to the aluminum alloy flange.
Particularly, the reliable connection of the semiconductor glaze layer and the aluminum alloy flange can ensure that the electric field of the porcelain bushing is uniformly distributed at the position close to the aluminum alloy flange and no suspension potential exists, so that the electrical performance of the product is improved.
The utility model has good sealing performance and no leakage; a wedge-shaped sealing gasket is clamped between the aluminum alloy flange and the porcelain sleeve, pressure is applied to the aluminum alloy flange to enable the wedge-shaped sealing gasket to have enough deformation, and after the wedge-shaped sealing gasket is compressed, the aluminum alloy flange can be self-locked and cannot loosen as the oblique angle of the wedge-shaped sealing gasket is smaller than the friction angle between the aluminum alloy flange and the wedge-shaped sealing gasket; the aluminum alloy flange, the porcelain sleeve and the wedge-shaped sealing gasket are firmly combined into a whole under the action of the epoxy adhesive by pouring the epoxy adhesive, so that the sealing requirement of a product is met. And secondly, a semiconductor glaze layer is coated on the position from the bottom umbrella of the porcelain sleeve to the aluminum alloy flange and is reliably connected with the aluminum alloy flange, so that the electric field distribution at the position is more uniform, partial discharge does not exist under the operating voltage, and the product has reliable electrical performance.
Drawings
Figure 1 is the utility model discloses a wedge totally enclosed clamps flange formula transformer bushing's structural schematic.
Fig. 2 is the wedge full-sealing clamps the structural schematic diagram of the flange type transformer bushing wedge-shaped sealing gasket.
Description of the drawings: 1-porcelain bushing; 2-a semiconductor glaze layer; 3-epoxy glue; 4-aluminum alloy flange; 5-a wedge-shaped gasket; 6-insulating sheath; 7-conductive rod.
Detailed Description
Example 1
The embodiment provides a wedge-shaped full-sealed clamped flange type transformer bushing which comprises a conducting rod 7, an insulating sheath 6 and a porcelain bushing 1 which are sequentially arranged from inside to outside; the lower part of the porcelain bushing 1 is provided with an annular convex part protruding outwards, and the vertical section of the convex part is rectangular; a wedge-shaped sealing gasket 5 is arranged on the outer side of the porcelain bushing 1, the upper part of the wedge-shaped sealing gasket 5 is arranged in contact with the lower part of the convex part, and the width of the upper part of the wedge-shaped sealing gasket 5 is larger than the width of the cross section of the convex part; the wedge-shaped sealing gasket 5 and the outer side of the protruding portion are further provided with an aluminum alloy flange 4, epoxy glue 3 is further arranged between the wedge-shaped sealing gasket 5 and the protruding portion, and the wedge-shaped sealing gasket 5, the protruding portion of the porcelain bushing 1 and the aluminum alloy flange 4 are fixed into a whole through the epoxy glue 3. The oblique angle of the wedge-shaped sealing gasket 5 is smaller than the friction angle between the aluminum alloy flange 4 and the wedge-shaped sealing gasket 5.
Specifically, a wedge-shaped sealing gasket 5 is clamped between the aluminum alloy flange 4 and the porcelain bushing 1 under the action of certain pressure, and the deformation of the wedge-shaped sealing gasket 5 is ensured to meet the sealing requirement. After the aluminum alloy flange 4 and the porcelain sleeve 1 are clamped, the epoxy adhesive 3 is poured between the aluminum alloy flange and the porcelain sleeve to enable the aluminum alloy flange, the porcelain sleeve and the porcelain sleeve to form an integral structure, and the stable sealing requirement is met.
Specifically, the oblique angle of the wedge-shaped sealing gasket 5 is smaller than the friction angle between the aluminum alloy flange 4 and the wedge-shaped sealing gasket 5, so that the self-locking of the clamped aluminum alloy flange 4 is ensured to be not loosened.
Example 2
The embodiment provides a wedge-shaped full-sealed clamped flange type transformer bushing which comprises a conducting rod 7, an insulating sheath 6 and a porcelain bushing 1 which are sequentially arranged from inside to outside; the lower part of the porcelain bushing 1 is provided with an annular convex part protruding outwards, and the vertical section of the convex part is rectangular; a wedge-shaped sealing gasket 5 is arranged on the outer side of the porcelain bushing 1, the upper part of the wedge-shaped sealing gasket 5 is arranged in contact with the lower part of the convex part, and the width of the upper part of the wedge-shaped sealing gasket 5 is larger than the width of the cross section of the convex part; an aluminum alloy flange 4 is further arranged on the outer sides of the wedge-shaped sealing gasket 5 and the protruding portion, an epoxy adhesive 3 is further arranged between the wedge-shaped sealing gasket 5 and the protruding portion, and the wedge-shaped sealing gasket 5, the protruding portion of the porcelain bushing 1 and the aluminum alloy flange 4 are fixed into a whole through the epoxy adhesive 3; and a semiconductor glaze layer 2 is arranged on the outer layer from the bottom umbrella of the porcelain bushing 1 to the aluminum alloy flange 4.
Specifically, a wedge-shaped sealing gasket 5 is clamped between the aluminum alloy flange 4 and the porcelain bushing 1 under the action of certain pressure, and the deformation of the wedge-shaped sealing gasket 5 is ensured to meet the sealing requirement. After the aluminum alloy flange 4 and the porcelain sleeve 1 are clamped, the epoxy adhesive 3 is poured between the aluminum alloy flange and the porcelain sleeve to enable the aluminum alloy flange, the porcelain sleeve and the porcelain sleeve to form an integral structure, and the stable sealing requirement is met.
Specifically, the reliable connection of the semiconductor glaze layer 2 and the aluminum alloy flange 4 can ensure that the electric field of the porcelain bushing 1 is uniformly distributed at the position close to the aluminum alloy flange 4 and no suspension potential exists, so that the electrical performance of the product is improved.
Example 3
The embodiment provides a wedge-shaped full-sealed clamped flange type transformer bushing which comprises a conducting rod 7, an insulating sheath 6 and a porcelain bushing 1 which are sequentially arranged from inside to outside; the lower part of the porcelain bushing 1 is provided with an annular convex part protruding outwards, and the vertical section of the convex part is rectangular; a wedge-shaped sealing gasket 5 is arranged on the outer side of the porcelain bushing 1, the upper part of the wedge-shaped sealing gasket 5 is arranged in contact with the lower part of the convex part, and the width of the upper part of the wedge-shaped sealing gasket 5 is larger than the width of the cross section of the convex part; the wedge-shaped sealing gasket 5 and the outer side of the protruding portion are further provided with an aluminum alloy flange 4, epoxy glue 3 is further arranged between the wedge-shaped sealing gasket 5 and the protruding portion, and the wedge-shaped sealing gasket 5, the protruding portion of the porcelain bushing 1 and the aluminum alloy flange 4 are fixed into a whole through the epoxy glue 3.
Specifically, a wedge-shaped sealing gasket 5 is clamped between the aluminum alloy flange 4 and the porcelain bushing 1 under the action of certain pressure, and the deformation of the wedge-shaped sealing gasket 5 is ensured to meet the sealing requirement. After the aluminum alloy flange 4 and the porcelain sleeve 1 are clamped, the epoxy adhesive 3 is poured between the aluminum alloy flange and the porcelain sleeve to enable the aluminum alloy flange, the porcelain sleeve and the porcelain sleeve to form an integral structure, and the stable sealing requirement is met.
Further, the wedge-shaped gasket 5 itself has a smaller bevel angle than the friction angle between the aluminum alloy flange 4 and the wedge-shaped gasket 5.
In particular, this ensures that the aluminium alloy flange 4 is self-locking and not loose after clamping.
Further, a semiconductor glaze layer 2 is arranged on the outer layer from the bottom umbrella of the porcelain sleeve 1 to the aluminum alloy flange 4.
Specifically, the reliable connection of the semiconductor glaze layer 2 and the aluminum alloy flange 4 can ensure that the electric field of the porcelain bushing 1 is uniformly distributed at the position close to the aluminum alloy flange 4 and no suspension potential exists, so that the electrical performance of the product is improved.
The utility model is not the best known technology.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (3)
1. The utility model provides a wedge totally enclosed clamps flange formula transformer bushing which characterized in that: comprises a conducting rod (7), an insulating sheath (6) and a porcelain bushing (1) which are arranged from inside to outside in sequence;
the lower part of the porcelain bushing (1) is provided with an annular convex part protruding outwards, and the vertical section of the convex part is rectangular; a wedge-shaped sealing gasket (5) is arranged on the outer side of the porcelain sleeve (1), the upper part of the wedge-shaped sealing gasket (5) is in contact with the lower part of the protruding part, and the width of the upper part of the wedge-shaped sealing gasket (5) is larger than the width of the cross section of the protruding part; the wedge-shaped sealing gasket (5) and the outer side of the protruding portion are further provided with an aluminum alloy flange (4), epoxy glue (3) is further arranged between the wedge-shaped sealing gasket (5) and the protruding portion, and the wedge-shaped sealing gasket (5), the protruding portion of the porcelain sleeve (1) and the aluminum alloy flange (4) are fixed into a whole through the epoxy glue (3).
2. The wedge-shaped totally enclosed clamp flange type transformer bushing of claim 1, wherein: the oblique angle of the wedge-shaped sealing gasket (5) is smaller than the friction angle between the aluminum alloy flange (4) and the wedge-shaped sealing gasket (5).
3. The wedge-shaped totally enclosed clamp flange type transformer bushing of claim 1, wherein: the outer layer from the bottom umbrella of the porcelain bushing (1) to the aluminum alloy flange (4) is provided with a semiconductor glaze layer (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020472162.6U CN211604892U (en) | 2020-04-02 | 2020-04-02 | Wedge-shaped full-sealed flange-mounted transformer bushing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020472162.6U CN211604892U (en) | 2020-04-02 | 2020-04-02 | Wedge-shaped full-sealed flange-mounted transformer bushing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211604892U true CN211604892U (en) | 2020-09-29 |
Family
ID=72583281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020472162.6U Active CN211604892U (en) | 2020-04-02 | 2020-04-02 | Wedge-shaped full-sealed flange-mounted transformer bushing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211604892U (en) |
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2020
- 2020-04-02 CN CN202020472162.6U patent/CN211604892U/en active Active
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