CN203617118U - Oil-immersed inverted current transformer - Google Patents
Oil-immersed inverted current transformer Download PDFInfo
- Publication number
- CN203617118U CN203617118U CN201320865510.6U CN201320865510U CN203617118U CN 203617118 U CN203617118 U CN 203617118U CN 201320865510 U CN201320865510 U CN 201320865510U CN 203617118 U CN203617118 U CN 203617118U
- Authority
- CN
- China
- Prior art keywords
- oil
- radome
- current transformer
- shield pipe
- device body
- 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 - Lifetime
Links
- 238000009413 insulation Methods 0.000 claims abstract description 25
- 238000004804 winding Methods 0.000 claims abstract description 16
- 239000004020 conductor Substances 0.000 claims abstract description 13
- 239000012212 insulator Substances 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 229910052573 porcelain Inorganic materials 0.000 abstract 1
- 239000005030 aluminium foil Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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- Regulation Of General Use Transformers (AREA)
Abstract
The utility model relates to an oil-immersed inverted current transformer, which belongs to the technical field of transformer manufacturing equipment. According to the technical scheme, an expander (1), a body (2), an oil storage tank (5), a porcelain sleeve (6) and a base (7) are sequentially connected, a primary conductor (3) is arranged on the outer side of the body (2) and is not in contact with transformer oil (4), a secondary shielding tube (8), a shielding cover (12) and a secondary winding (13) are arranged in the body (2), the shielding cover (12) is arranged outside the secondary winding (13), the secondary shielding tube (8) and the shielding cover (12) are formed into an internal main shield which is connected with a low potential, and a main shield (11) is arranged outside the body and connected with a high potential. The oil-immersed inverted current transformer has the advantages that when a major insulation is broken down, short-circuit current enters a grounding network via the shielding cover, the secondary shielding tube and the base and thereby being prevented from harming personnel and equipment in a control room; a machine is adopted to wind the major insulation of the secondary shielding tube, only the two main shields are arranged on the periphery, and therefore the quality of the product and the efficiency of binding are increased.
Description
Technical field
The utility model relates to a kind of oil-immersed inverted current transformer, belongs to instrument transformer manufacturing equipment technical field.
Background technology
The outer Without Shielding Cover of existing oil-immersed inverted current transformer secondary winding, adopts support that secondary winding is supported fixing, and in the time that product main insulation punctures, short circuit current can enter control room by secondary winding, and the safety of personnel and equipment is threatened.Ring portion and straight line portion are connected into one and carry out main insulation wrapping, are generally manual wrapping, and wrapping efficiency is low, and quality is unstable.Four and above main screen are set in main insulation and all press, reduce electric field strength, main screen material selection aluminium foil, in order to prevent from forming short circuit circle, aluminium foil need disconnect in ring portion, has increased wrapping difficulty, has reduced wrapping efficiency.Primary Conductor is immersed in transformer oil, and overload capacity is low, and in the time that current transformer transships, Primary Conductor temperature raises, and likely can make Primary Conductor transformer oil temperature around exceed its long-term working temperature that allows, and affects product quality.
Utility model content
The utility model object is to provide a kind of oil-immersed inverted current transformer, Primary Conductor does not contact with transformer oil, ring portion and straight line portion independently carry out insulating wrapping, radome and electronegative potential are connected, short circuit current enters ground network by radome, secondary shield pipe, base, can not work the mischief to controlling indoor occupant and equipment, solve the problems referred to above that exist in background technology.
The technical solution of the utility model is: a kind of oil-immersed inverted current transformer, comprise expander, device body, Primary Conductor, transformer oil, oil conservator, insulator, base, secondary shield pipe, main insulation, end screen, main screen, radome and secondary winding, described expander, device body, oil conservator, insulator, base connects successively, Primary Conductor is arranged on the outside of device body, do not contact with each other with transformer oil, secondary shield pipe, radome, secondary winding is arranged on the inside of device body, radome is arranged on the outside of secondary winding, main screen in secondary shield pipe and radome form, interconnect with electronegative potential, main screen is arranged on the outside of device body, interconnect with high potential, main insulation is arranged on the outside of secondary shield pipe, end screen is arranged in main insulation, quantity is more than one, be provided with the poor structure of ladder.
Described main insulation is whole cable paper or banded cable, and wrapping mode is machine wrapping.
Described secondary shield pipe and radome are connected to each other by screw thread.
The beneficial effects of the utility model are: in the time that main insulation punctures, short circuit current enters ground network by radome, secondary shield pipe, base, can not work the mischief to controlling indoor occupant and equipment.Secondary shield pipe main insulation adopts machine wrapping, and ring portion only arranges two main screens, has improved product quality and wrapping efficiency.Improve product overload capacity, reduced the temperature rise of transformer oil in product.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the generalized section of the utility model device body;
In figure: expander 1; Device body 2; Primary Conductor 3; Transformer oil 4; Oil conservator 5; Insulator 6; Base 7; Secondary shield pipe 8; Main insulation 9; End screen 10; Main screen 11; Radome 12; Secondary winding 13.
Embodiment
Below in conjunction with accompanying drawing, by embodiment, the utility model is described in further detail.
A kind of oil-immersed inverted current transformer, comprise expander 1, device body 2, Primary Conductor 3, transformer oil 4, oil conservator 5, insulator 6, base 7, secondary shield pipe 8, main insulation 9, end screen 10, main screen 11, radome 12 and secondary winding 13, described expander 1, device body 2, oil conservator 5, insulator 6, base 7 connects successively, Primary Conductor 3 is arranged on the outside of device body 2, do not contact with each other with transformer oil 4, secondary shield pipe 8, radome 12, secondary winding 13 is arranged on the inside of device body 2, radome 12 is arranged on the outside of secondary winding 13, main screen in secondary shield pipe 8 and radome 12 form, interconnect with electronegative potential, main screen 11 is arranged on the outside of device body 2, interconnect with high potential, main insulation 9 is arranged on the outside of secondary shield pipe 8, end screen 10 is arranged in main insulation 9, quantity is more than one, be provided with the poor structure of ladder.
Described main insulation 9 is whole cable paper or banded cable, and wrapping mode is machine wrapping.
Described secondary shield pipe 8 is connected to each other by screw thread with radome 12.
In use, in device body 2, comprise radome 12 and secondary shield pipe 8, a radome 12 is set secondary winding 13 is outer.Ring portion only arranges two main screens, and radome 12 is an interior main screen with secondary shield pipe 8, connects electronegative potential, and outermost arranges a main screen 11, connects high potential.Secondary shield pipe 8 can be wrapped up main insulation 9 with machine separately, and main insulation can also can, with the wrapping of banded cable half lap, adopt multiple ends to shield 10 partial-pressure structures, and it be poor to reserve ladder with whole cable paper wrapping, conveniently connects with ring portion main insulation.Secondary shield pipe 8 can be linked together by screw thread and radome after wrapping main insulation 9, then carries out the wrapping of ring portion main insulation.Primary Conductor 3 is arranged in air and does not contact with transformer oil 4.
Claims (3)
1. an oil-immersed inverted current transformer, is characterized in that: comprise expander (1), device body (2), Primary Conductor (3), transformer oil (4), oil conservator (5), insulator (6), base (7), secondary shield pipe (8), main insulation (9), end screen (10), main screen (11), radome (12) and secondary winding (13), described expander (1), device body (2), oil conservator (5), insulator (6), base (7) connects successively, and Primary Conductor (3) is arranged on the outside of device body (2), does not contact with each other secondary shield pipe (8) with transformer oil (4), radome (12), secondary winding (13) is arranged on the inside of device body (2), radome (12) is arranged on the outside of secondary winding (13), main screen in secondary shield pipe (8) and radome (12) form, interconnect with electronegative potential, main screen (11) is arranged on the outside of device body (2), interconnects with high potential, and main insulation (9) is arranged on the outside of secondary shield pipe (8), it is upper that end screen (10) is arranged on main insulation (9), and quantity is more than one.
2. a kind of oil-immersed inverted current transformer according to claim 1, is characterized in that: described main insulation (9) is whole cable paper or banded cable, and wrapping mode is machine wrapping.
3. a kind of oil-immersed inverted current transformer according to claim 1, is characterized in that: described secondary shield pipe (8) is connected to each other by screw thread with radome (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320865510.6U CN203617118U (en) | 2013-12-26 | 2013-12-26 | Oil-immersed inverted current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320865510.6U CN203617118U (en) | 2013-12-26 | 2013-12-26 | Oil-immersed inverted current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203617118U true CN203617118U (en) | 2014-05-28 |
Family
ID=50769747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320865510.6U Expired - Lifetime CN203617118U (en) | 2013-12-26 | 2013-12-26 | Oil-immersed inverted current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203617118U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106384658A (en) * | 2016-11-18 | 2017-02-08 | 保定天威互感器有限公司 | Oil-immersed inversion type current transformer major insulation wrapping connection structure and method |
| CN106384657A (en) * | 2016-11-18 | 2017-02-08 | 保定天威互感器有限公司 | Inverted oil-immersed current transformer body supporting structure and manufacturing method thereof |
| CN107545998A (en) * | 2017-10-27 | 2018-01-05 | 江苏思源赫兹互感器有限公司 | A kind of isolating transformer |
| CN109360712A (en) * | 2018-11-27 | 2019-02-19 | 保定天威互感器有限公司 | A kind of transformer external current mutual inductor and its application method |
| CN110988610A (en) * | 2019-11-07 | 2020-04-10 | 国网河北省电力有限公司电力科学研究院 | Novel inverted current transformer, insulation detection method and detection device |
-
2013
- 2013-12-26 CN CN201320865510.6U patent/CN203617118U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106384658A (en) * | 2016-11-18 | 2017-02-08 | 保定天威互感器有限公司 | Oil-immersed inversion type current transformer major insulation wrapping connection structure and method |
| CN106384657A (en) * | 2016-11-18 | 2017-02-08 | 保定天威互感器有限公司 | Inverted oil-immersed current transformer body supporting structure and manufacturing method thereof |
| CN106384658B (en) * | 2016-11-18 | 2017-12-15 | 保定天威互感器有限公司 | A kind of oil-immersed inverted current transformer major insulation wraps up coupling method |
| CN107545998A (en) * | 2017-10-27 | 2018-01-05 | 江苏思源赫兹互感器有限公司 | A kind of isolating transformer |
| CN107545998B (en) * | 2017-10-27 | 2024-02-23 | 江苏思源赫兹互感器有限公司 | Isolation transformer |
| CN109360712A (en) * | 2018-11-27 | 2019-02-19 | 保定天威互感器有限公司 | A kind of transformer external current mutual inductor and its application method |
| CN109360712B (en) * | 2018-11-27 | 2023-10-17 | 保定天威互感器有限公司 | External current transformer for transformer and application method thereof |
| CN110988610A (en) * | 2019-11-07 | 2020-04-10 | 国网河北省电力有限公司电力科学研究院 | Novel inverted current transformer, insulation detection method and detection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140528 |
|
| CX01 | Expiry of patent term |