CN211555653U - Oil-immersed transformer core grounding structure - Google Patents
Oil-immersed transformer core grounding structure Download PDFInfo
- Publication number
- CN211555653U CN211555653U CN202020537965.5U CN202020537965U CN211555653U CN 211555653 U CN211555653 U CN 211555653U CN 202020537965 U CN202020537965 U CN 202020537965U CN 211555653 U CN211555653 U CN 211555653U
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- boss
- oil
- flange
- mounting hole
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Abstract
The utility model provides an oil-immersed transformer core ground structure belongs to transformer technical field. Oil-immersed transformer includes the oil tank, this ground structure is including seting up the mounting hole in the oil tank bottom, insert the rubber sleeve of leading electrical pillar and a tube-shape of ground connection of establishing in the mounting hole, the protruding muscle that the diameter is less than the mounting hole has on the mounting hole inner wall, the second grade boss that one-level boss and diameter are less than the one-level boss has on the ground connection electrical pillar, second grade boss diameter is greater than the ground connection wire post, the second grade boss is located the below of one-level boss, threaded connection has a locking cap on the ground connection wire post, the top of locking cap has the flange with the equal diameter of second grade boss, the rubber sleeve cover is established between second grade boss and flange, protruding muscle is inserted and is established between flange and second grade flange, the. The utility model has the advantages of good sealing performance and the like.
Description
Technical Field
The utility model belongs to the technical field of the transformer, a oil-immersed transformer core ground structure is related to.
Background
The iron core of the oil-immersed transformer extends out of the bottom of the oil tank and penetrates through the oil tank, the grounding conductor wire easily causes oil leakage of the oil tank at the position contacted with the oil tank, and rusting and oil leakage are easily caused by adopting modes such as welding and the like, so that the safety of the transformer is not facilitated.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the above-mentioned problem that exists to current technique, provide an oil-immersed transformer core ground structure, the utility model aims to solve the technical problem how improve the leakproofness between ground conductor post and the oil tank.
The purpose of the utility model can be realized by the following technical proposal: the utility model provides an oil-immersed transformer iron core ground structure, oil-immersed transformer include the oil tank, its characterized in that, this ground structure including set up at the mounting hole of oil tank bottom, insert the ground connection of establishing in the mounting hole and lead electrical pillar and a cylindrical rubber sleeve, the protruding muscle that the diameter is less than the mounting hole has on the mounting hole inner wall, ground connection has the second grade boss that one-level boss and diameter are less than the one-level boss on leading electrical pillar, second grade boss diameter is greater than the ground connection wire post, the second grade boss is located the below of one-level boss, threaded connection has a locking cap on the ground connection wire post, the top of locking cap has the flange with the equal diameter of second grade boss, the rubber sleeve cover is established between second grade boss and flange, protruding muscle is inserted and is established between flange and second grade flange, the internal diameter of protruding muscle is less than the.
The rubber sleeve is at one-level boss, the second grade boss, protruding muscle, form a lot of between flange and the ground connection wire post and compress tightly sealedly, wherein, to compressing tightly of rubber sleeve between the straight terminal surface of second grade boss and the up end of protruding muscle, the clamp to the rubber sleeve between the straight terminal surface of flange and the lower terminal surface of protruding muscle is realized through lock nut, the sealing of these two parts is plane seal, and sealing strength can be transferred through lock nut, the leakproofness and the joint strength between oil tank and the ground connection electric conduction post have been improved greatly.
In the oil-immersed transformer core grounding structure, two ends of the rubber sleeve are respectively provided with a convex strip extending out of the outer side surface of the rubber sleeve.
The sealing between mounting hole inner wall and the global of second grade boss can be realized to the sand grip, further strengthens sealed effect.
In the oil-immersed transformer core grounding structure, the grounding conductive column is in threaded connection with a locking nut located below the locking cap.
The locking nut can prevent the locking nut from loosening, and the reliability is improved.
Drawings
Fig. 1 is a cross-sectional view of the present grounding structure.
In the figure, 1, a fuel tank; 11. mounting holes; 12. a rib is protruded; 2. a rubber sleeve; 21. a convex strip; 31. a ground conductive post; 32. a first-stage boss; 33. a secondary boss; 4. a locking cap; 41. a flange.
Detailed Description
The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
As shown in fig. 1, the oil-immersed transformer includes an oil tank 1, the ground structure includes a mounting hole 11 opened at the bottom of the oil tank 1, a ground conductive column 31 inserted in the mounting hole 11 and a cylindrical rubber sleeve 2, a protruding rib 12 with a diameter smaller than that of the mounting hole 11 is provided on the inner wall of the mounting hole 11, a first-stage boss 32 and a second-stage boss 33 with a diameter smaller than that of the first-stage boss 32 are provided on the ground conductive column 31, the diameter of the second-stage boss 33 is larger than that of the ground conductive column, the second-stage boss 33 is located below the first-stage boss 32, a locking cap 4 is connected to the ground conductive column through a thread, a flange 41 with a diameter equal to that of the second-stage boss 33 is provided above the locking cap 4, the rubber sleeve 2 is sleeved between the second-stage boss 33 and the flange 41, the protruding rib 12 is inserted between the.
The two ends of the rubber sleeve 2 are respectively provided with a convex strip 21 extending out of the outer side surface of the rubber sleeve 2. The convex strip 21 can realize the sealing between the inner wall of the mounting hole 11 and the peripheral surface of the secondary boss 33, and the sealing effect is further enhanced.
The locking nut located below the locking cap 4 is connected to the grounding conductive column 31 through a thread. The locking nut can prevent the locking nut from loosening, and the reliability is improved.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (3)
1. The oil-immersed transformer iron core grounding structure comprises an oil tank (1) and is characterized by comprising a mounting hole (11) formed in the bottom of the oil tank (1), a grounding conductive column (31) inserted in the mounting hole (11) and a cylindrical rubber sleeve (2), wherein a convex rib (12) with the diameter smaller than that of the mounting hole (11) is arranged on the inner wall of the mounting hole (11), a first-stage boss (32) and a second-stage boss (33) with the diameter smaller than that of the first-stage boss (32) are arranged on the grounding conductive column (31), the diameter of the second-stage boss (33) is larger than that of a grounding wire column, the second-stage boss (33) is positioned below the first-stage boss (32), a locking cap (4) is connected to the grounding wire column in a threaded manner, a flange (41) with the diameter equal to that of the second-stage boss (33) is arranged above the locking cap (4), the rubber sleeve (2) is sleeved between the second-stage boss (33) and the flange (41), the convex rib (12) is inserted between the flange (41) and the second-stage flange (41), and the inner diameter of the convex rib (12) is smaller than the diameter of the second-stage boss (33).
2. The oil-immersed transformer core grounding structure according to claim 1, characterized in that both ends of the rubber sleeve (2) are respectively provided with a convex strip (21) extending to the outer side surface of the rubber sleeve (2).
3. The oil-filled transformer core grounding structure according to claim 1, wherein a locking nut located below the locking cap (4) is connected to the grounding conductive column (31) in a threaded manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020537965.5U CN211555653U (en) | 2020-04-13 | 2020-04-13 | Oil-immersed transformer core grounding structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020537965.5U CN211555653U (en) | 2020-04-13 | 2020-04-13 | Oil-immersed transformer core grounding structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211555653U true CN211555653U (en) | 2020-09-22 |
Family
ID=72497085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020537965.5U Expired - Fee Related CN211555653U (en) | 2020-04-13 | 2020-04-13 | Oil-immersed transformer core grounding structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211555653U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112599332A (en) * | 2020-11-30 | 2021-04-02 | 国网福建省电力有限公司电力科学研究院 | Iron core grounding lead structure for transformer |
-
2020
- 2020-04-13 CN CN202020537965.5U patent/CN211555653U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112599332A (en) * | 2020-11-30 | 2021-04-02 | 国网福建省电力有限公司电力科学研究院 | Iron core grounding lead structure for transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200922 |