CN205140672U - Transformer high -tension bushing tap grounding device - Google Patents
Transformer high -tension bushing tap grounding device Download PDFInfo
- Publication number
- CN205140672U CN205140672U CN201520932732.4U CN201520932732U CN205140672U CN 205140672 U CN205140672 U CN 205140672U CN 201520932732 U CN201520932732 U CN 201520932732U CN 205140672 U CN205140672 U CN 205140672U
- Authority
- CN
- China
- Prior art keywords
- ground connection
- cylindrical cavity
- nail
- spring
- spring holder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 230000006835 compression Effects 0.000 claims 2
- 238000007906 compression Methods 0.000 claims 2
- 230000006978 adaptation Effects 0.000 abstract 1
- 230000003211 malignant effect Effects 0.000 abstract 1
- 238000009413 insulation Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005283 ground state Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000009422 external insulation Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
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- Insulators (AREA)
Abstract
The utility model provides a transformer high -tension bushing tap grounding device, including the ground connection lid, the insulating stand, base and stem, ground connection lid and base fixed connection, top in the ground connection lid is equipped with the cylindrical cavity who places the spring, the cylindrical cavity inner wall is equipped with the internal thread, be equipped with hollow spring holder in the cylindrical cavity, the spring holder outer wall is equipped with the external screw thread with cylindrical cavity inner wall internal thread looks adaptation, the spring holder revolves in cylindrical cavity, the inner wall of hollow spring holder lower extreme is equipped with the step face, the spring holder endotheca is equipped with the ground connection nail of T shape, the afterbody of ground connection nail passes the hole of spring holder lower extreme, in the inner chamber of head restriction on the step face of spring holder of ground connection nail, the spring is located between the head of the cylindrical cavity's of ground connection lid top surface and the ground connection nail that T appeared, the terminal surface on the top of stem pushes up the afterbody terminal surface at the ground connection nail. The utility model has the advantages of simple and reasonable structure, the potential safety hazard that traditional device exists, the emergence of having avoided transformer malignant accident have been solved to the ground connection reliability of this device has been improved.
Description
Technical field
The utility model relates to power transformer field, especially a kind of transformer high-voltage bushing end shield earthing device.
Background technology
Along with the continuous progress of science and technology and developing rapidly of society, the importance of bushing is recognized by relevant department and staff gradually, become the inner most important electric equipment of electrical network, can make with powerful electric current and high-tension wire safety through metal shell, tank wall, ground connection wall etc., be then connected with other high voltage electric equipments.Bushing is in the normal process run; the ground state of end shield must be reliable; only have ground state reliable; the electric field on external insulation insulator surface just can be made to be uniformly distributed under all pressures effect of internal capacitance fuse; thus reach the object of protection capacitor core; improve constantly the electrical insulation properties of bushing, and bushing is not only as lead-in wire insulation over the ground, and is responsible for the important function of anchor leg.Sleeve pipe is the important component part of power transformer, mainly bear the insulation against ground of inside transformer outlet, support and current-carrying function, must possess enough electrically and mechanical strength, what can be in operation when bearing permanent load electric current and short circuit is instantaneous overheated, and has good thermal stability.If bushing shell for transformer existing defects or break down, will directly jeopardize safe operation and the power supply reliability of transformer.The ground connection of existing Transformer Bushing Tap earthing device is covered interior built-in cylinder grid arch jump ring and is realized with being mainly abutted against.When ground connection lid screw put in place time, end shield stem enters places the position of jump ring, and jump ring contacts with the entering part circumference palisade of end shield stem, then to be connected through transformer case by end shield device pedestal and casing flange and reach ground connection object.In use, easily there is distortion and damage in jump ring to the transformer high-voltage bushing end shield earthing device of above-mentioned prior art, causes the phenomenon of end shield stem imperfect earth, cause certain potential safety hazard.
Utility model content
The purpose of this utility model is exactly for above-mentioned prior art Problems existing, designs a kind of transformer high-voltage bushing end shield earthing device, can improve the reliability of end shield stem ground connection, simply rational in infrastructure, to improve the security performance of electric power system.
The purpose of this utility model is realized by such technical scheme, a kind of transformer high-voltage bushing end shield earthing device, comprise ground connection lid 2, insulation pad 3, base 1 and stem 4, ground connection lid 2 is fixedly connected with base 1, it is characterized in that the top in ground connection lid 2 is provided with the cylindrical cavity 11 placing spring 7, cylindrical cavity 11 inwall is provided with internal thread, the spring base 5 of hollow is provided with in cylindrical cavity 11, spring base 5 outer wall is provided with the external screw thread suitable with cylindrical cavity 11 inwall internal thread, spring base 5 is spun in cylindrical cavity 11, the inwall of spring base 5 lower end of hollow is provided with step surface 12, the grounding nail 6 of T-shaped is arranged with in spring base 5, the afterbody of the grounding nail 6 of T-shaped passes the hole of spring base 5 lower end, in inner chamber above the step surface 12 that the head of grounding nail 6 is limited in spring base 5, spring 7 is between the end face of cylindrical cavity 11 and the head of the grounding nail 6 of T-shaped of ground connection lid 2, the end face on the top of stem 4 withstands on the tail end face of grounding nail 6.
During concrete enforcement, the grounding nail 6 of T-shaped is the grounding nail of copper product.
During concrete enforcement, the top of stem 4 is provided with external screw thread, and be provided with and press suitable clamp nut 9 with the upper external thread of stem 4, clamp nut 9 is pressed on the end face of insulation pad 3.
During concrete enforcement, ground connection is covered 2 ends and is threaded with base 1, and ground connection is covered between 2 ends and base 1 and arranged sealing gasket 8.
The ground connection lid and bottom seat of transformer high-voltage bushing end shield earthing device of the present utility model is generally aluminium material and makes, and the ground connection of end shield stem leans on the contact being embedded in elastic force earthing rod with ground connection lid.The similar hollow bolt of spring base, the built-in spring of spring base, makes earthing rod keep the reduced amount of stretching and a pressure.The head of earthing rod and spring base coordinate through port ons, spring base and ground connection cover in cylindrical cavity correspondence position thread connection, make earthing rod and ground connection cover between contact resistance less.
Screwing in ground connection lid process, stem top first cover with ground connection in earthing rod end contact coincide, along with screwing of covering of ground connection puts in place, earthing rod is pushed into the depth of thread being slightly equal to ground connection and covering, and makes spring pressurized after earthing rod.Under the effect of springback power, earthing rod end face effectively contacts with binding post end face is vertical, and keeps certain contact.Through being connected and fixed of ground connection lid and end shield base and casing flange, realize the object (casing flange is connected with transformer case) of end shield binding post ground connection, its structural design is comparatively reasonable.
The beneficial effects of the utility model are: technical solutions of the utility model can guarantee end shield stem energy reliable ground, simple and reasonable, solve the potential safety hazard that conventional apparatus exists, the generation avoiding transformer serious accident, thus improve the Earthing Reliability of this device.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, utility model is further illustrated.
Fig. 1 is the structural representation of the utility model embodiment.
In figure: 1, base 2, ground connection lid 3, insulation pad 4, stem 5, spring base 6, grounding nail 7, spring 8, sealing gasket 9, clamp nut 10, pad 11, cylindrical cavity 12, step surface.
Embodiment
Below in conjunction with drawings and Examples, further non-limiting description is done to the utility model:
In Fig. 1, a kind of transformer high-voltage bushing end shield earthing device, comprise ground connection lid 2, insulation pad 3, base 1 and stem 4, ground connection lid 2 is fixedly connected with base 1, the top of stem 4 is provided with external screw thread, is provided with and presses suitable clamp nut 9 with the upper external thread of stem 4, and clamp nut 9 is pressed on the end face of insulation pad 3 by pad 10, ground connection is covered 2 ends and is threaded with base 1, and ground connection is covered between 2 ends and base 1 and arranged sealing gasket 8.Top in ground connection lid 2 is provided with the cylindrical cavity 11 placing spring 7, cylindrical cavity 11 inwall is provided with internal thread, the spring base 5 of hollow is provided with in cylindrical cavity 11, spring base 5 outer wall is provided with the external screw thread suitable with cylindrical cavity 11 inwall internal thread, spring base 5 is spun in cylindrical cavity 11, the inwall of spring base 5 lower end of hollow is provided with step surface 12, the grounding nail 6 of T-shaped is arranged with in spring base 5, the grounding nail 6 of T-shaped is brass material, the afterbody of the grounding nail 6 of T-shaped passes the hole of spring base 5 lower end, in inner chamber above the step surface 12 that the head of grounding nail 6 is limited in spring base 5, spring 7 is between the end face of cylindrical cavity 11 and the head of the grounding nail 6 of T-shaped of ground connection lid 2, the end face on the top of stem 4 withstands on the tail end face of grounding nail 6.Ground connection lid 2 and base 1 are made for aluminium material, and ground connection the leaning on of end shield stem 4 is covered 2 contacts being embedded in elastic force earthing rod with ground connection and come, and the similar hollow bolt of spring base 5, the built-in spring 7 of spring base 5, makes earthing rod keep the reduced amount of stretching and a pressure.The head of earthing rod 4 coordinates through port ons with spring base 5, and spring base 5 and ground connection cover the cylindrical cavity 11 correspondence position thread connection in 2, and the contact resistance that earthing rod 6 and ground connection are covered between 2 is less.The utility model is under the effect of springback power, and earthing rod end face effectively contacts with binding post end face is vertical, and keeps certain contact.Through being connected and fixed of ground connection lid and end shield base and casing flange, realize the object of end shield binding post ground connection, its structural design is comparatively reasonable.
Finally, it is also to be noted that what enumerate above is only specific embodiment of the utility model.Obviously, the utility model is not limited to above embodiment, can also have many distortion.All distortion that those of ordinary skill in the art can directly derive from disclosed content of the present utility model or associate, all should think protection range of the present utility model.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520932732.4U CN205140672U (en) | 2015-11-16 | 2015-11-16 | Transformer high -tension bushing tap grounding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520932732.4U CN205140672U (en) | 2015-11-16 | 2015-11-16 | Transformer high -tension bushing tap grounding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205140672U true CN205140672U (en) | 2016-04-06 |
Family
ID=55626440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520932732.4U Expired - Fee Related CN205140672U (en) | 2015-11-16 | 2015-11-16 | Transformer high -tension bushing tap grounding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205140672U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105761912A (en) * | 2016-05-16 | 2016-07-13 | 国网新疆电力公司阿克苏供电公司 | Matching structure for ensuring reliable contact of head portion of sleeve and carrying current |
| CN106710840A (en) * | 2017-03-14 | 2017-05-24 | 国网江苏省电力公司泗洪县供电公司 | Grounding line mounting opening insulation device |
| CN111474497A (en) * | 2020-04-14 | 2020-07-31 | 中国大唐集团科学技术研究院有限公司西北电力试验研究院 | A grounding state detection device for a built-in high-voltage bushing end screen |
| CN112041945A (en) * | 2018-03-22 | 2020-12-04 | Abb电网瑞士股份公司 | Sleeve with end screen assembly |
| WO2023029128A1 (en) * | 2021-09-06 | 2023-03-09 | 中国南方电网有限责任公司超高压输电公司贵阳局 | Tap terminal having dual-point grounding |
-
2015
- 2015-11-16 CN CN201520932732.4U patent/CN205140672U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105761912A (en) * | 2016-05-16 | 2016-07-13 | 国网新疆电力公司阿克苏供电公司 | Matching structure for ensuring reliable contact of head portion of sleeve and carrying current |
| CN106710840A (en) * | 2017-03-14 | 2017-05-24 | 国网江苏省电力公司泗洪县供电公司 | Grounding line mounting opening insulation device |
| CN106710840B (en) * | 2017-03-14 | 2018-03-27 | 国网江苏省电力公司泗洪县供电公司 | One kind ground wire installing port seal |
| CN112041945A (en) * | 2018-03-22 | 2020-12-04 | Abb电网瑞士股份公司 | Sleeve with end screen assembly |
| US11270817B2 (en) | 2018-03-22 | 2022-03-08 | Hitachi Energy Switzerland Ag | Bushing with a tap assembly |
| CN111474497A (en) * | 2020-04-14 | 2020-07-31 | 中国大唐集团科学技术研究院有限公司西北电力试验研究院 | A grounding state detection device for a built-in high-voltage bushing end screen |
| WO2023029128A1 (en) * | 2021-09-06 | 2023-03-09 | 中国南方电网有限责任公司超高压输电公司贵阳局 | Tap terminal having dual-point grounding |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20161117 Address after: 324102 Zhejiang province Jiangshan Huatong Road Economic Development Zone No. 17 Patentee after: SHENDA ELECTRIC GROUP Co.,Ltd. Address before: The 324100 Ring Road in Zhejiang province Jiangshan City 24 building 3 floor Patentee before: JIANGSHAN HAIWEI TECHNOLOGY Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160406 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |