CN201022050Y - Outside force damage and theft prevention high voltage dry current mutual inductor - Google Patents
Outside force damage and theft prevention high voltage dry current mutual inductor Download PDFInfo
- Publication number
- CN201022050Y CN201022050Y CNU2007200625766U CN200720062576U CN201022050Y CN 201022050 Y CN201022050 Y CN 201022050Y CN U2007200625766 U CNU2007200625766 U CN U2007200625766U CN 200720062576 U CN200720062576 U CN 200720062576U CN 201022050 Y CN201022050 Y CN 201022050Y
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- winding
- creepage
- high voltage
- current transformer
- line unit
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Abstract
A damage and creepage resistant high-tension dry current transformer comprises a primary winding, a secondary winding, a machine base, a casing, a primary expansion line device and a secondary expansion line device. The primary winding is coated with a high-strength ceramic bushing, and a colloid insulating material packed layer is arranged between the high-strength ceramic bushing and the primary winding. The utility model can effectively improve the external insulating mechanical strength and the damage-resistance property of the high-tension dry current transformer, and simultaneously resolves the creepage question of the primary winding interface. The utility model is especially applicable to provide power supply to high-pressure measuring, gauging, and display instruments or relay protection control devices.
Description
Technical field
The utility model relates to a kind of for metering, measurement, indicating instrument or relaying protection control device provide the High-Voltage Electrical Appliances of power supply, the anti-creepage high voltage dry-type current transformer of particularly a kind of external force resistance damage.
Background technology
The insulation system of high-tension current inductor mainly contains the dry-type current transformer of paper oil insulation current transformer, sulfur hexafluoride gas-insulating current transformer, poured with epoxy resin Insulated Current Transformers and compound inslation.Wherein the combined insulated dry current transformer is because have advantage such as do not have oil (transformer oil), no gas, no porcelain, little, in light weight, the fire-proof and explosion-proof ability of volume are strong, just put on market and developed rapidly, be listed in the row of high-voltage mutual inductor with paper oil insulation current transformer, sulfur hexafluoride gas-insulating current transformer three.The combined insulated dry current transformer adopts " U " font structure, two legs of " U " font pass behind the casing external insulation separately, the main insulation material adopts teflon oriented film, be furnished with capacitance plate between insulating barrier, adopted the capacitor voltage equalizing structure, outer insulating material adds the silicon rubber full skirt for the silicon rubber oversheath, filling liquid silicone oil between insulating barrier, with the space of liquid filled with silicone oil insulating tape interlayer, with partial discharge quantity that reduces product and the partial discharge voltage that improves product; It is that sealing takes bonding mode to solve, when its in outdoor long-time running, because heat, cold,, ultraviolet ray, the effect of factors such as insolation, use after the certain hour, the outer field heat-shrink tube of insulating tape is (particularly at interface, sealing part) aging phenomena such as corrosion appear in meeting, adding the liquid silicone oil that is sealed in the heat-shrink tube itself is exactly the goodish liquid of a kind of flowability, when product temperature raises, it can expand, in heat-shrink tube, produce a kind of external pressure, in case when the outer field heat-shrink tube of insulating tape weak link occurred because of wearing out, liquid silicone oil just might break through outer heat-shrink tube and exosmose.For a long time, this kind current transformer never obtains basic solution in the problem of interface, sealing part seepage silicone oil.
For solving the problems referred to above of combined insulated dry current transformer, Chinese patent CN2729877Y has announced a kind of winding of instrument transformer, wall bushing that adopts the silicon oil solidifying fabrication techniques, and it comprises Primary Conductor, is used to support the shielded-plate tube of Primary Conductor, at outermost heat-shrink tube and insulating tape between shielded-plate tube and heat-shrink tube and capacitance plate; Insulating tape is formed by solidifying silicone oil and oriented film, and the solidification of silicon oil level is between every strata tetrafluoroethene oriented film; Solidifying silicone oil is that an amount of curing agent of adding is formulated in silicone oil.Though it is to adopt the silicon oil solidifying technology to solve the silicone oil leakage problems, can effectively prevent because the electrical equipment accident that the silicone oil seepage causes takes place, guarantee safe operation of power system, but because its external insulation is made up of the heat-shrink tube and the silicon rubber full skirt of a winding, there is following deficiency in it:
1, between its heat-shrink tube and winding and between heat-shrink tube and full skirt the interface is arranged, have the creepage problem in interface;
2, its outer insulating material is the heat-shrink tube and the silicon rubber full skirt of a winding, they all are organic materials, its mechanical strength is relatively poor, external force resistance damages poor-performing, in transportation, storage or outdoor running, be easily external force or toy and sting and bite damage full skirt and heat-shrink tube, make product rejection or influence the serviceability of product.
Summary of the invention
The purpose of this utility model is to overcome the above-mentioned deficiency of prior art and provide the damage of a kind of external force resistance anti-creepage high voltage dry-type current transformer, its can be fine resistance external force damage and prevent that a winding high pressure is creepage, improved the durability and the fail safe of product.
The technical solution of the utility model is: the anti-creepage high voltage dry-type current transformer of a kind of external force resistance damage, and it comprises winding, secondary winding, base, shell, Outgoing Line Unit and secondary Outgoing Line Unit; Winding comprises Primary Conductor, is used to support the shielded-plate tube of Primary Conductor, is positioned at shielded-plate tube outer insulating tape and capacitance plate; The bottom of a winding is fixedly mounted on the base, secondary winding is sleeved on the bottom of a winding, the lower seal of a secondary winding and a winding is cased, and a winding top passes the hole from shell, and high-strength porcelain bushing top is connected with flange seal; One time Outgoing Line Unit is connected with a winding top; The secondary Outgoing Line Unit is connected with secondary winding by shell; One time winding is set with high-strength porcelain bushing outward, is provided with colloidal state filling insulating material layer between high-strength porcelain bushing and a winding.
The further technical scheme of the utility model is: the insulating tape of a described winding is formed by solidifying silicone oil and oriented film, and the solidification of silicon oil level is between every strata tetrafluoroethene oriented film.
The further technical scheme of the utility model is: described high-strength porcelain bushing top is connected with flange seal.
The utility model compared with prior art has following characteristics:
1, the utility model adopts two high-strength porcelain bushings to do the external insulation between winding one time, has overcome heat-shrink tube and silicon rubber full skirt and has done that the external insulation mechanical strength is relatively poor, external force resistance damages the poor-performing problem.
2, be provided with colloidal state filling insulating material layer between high-strength porcelain bushing and a winding, overcome between heat-shrink tube and winding and the interface between heat-shrink tube and full skirt, solved the creepage problem of interface high pressure.
Below in conjunction with the drawings and specific embodiments detailed structure of the present utility model is further described.
Description of drawings
Accompanying drawing 1 is a structural representation of the present utility model;
Accompanying drawing 2 is the A-A cutaway view of accompanying drawing 1;
Accompanying drawing 3 is the structural representation of a winding of the present utility model.
Embodiment
Embodiment
Shown in accompanying drawing 1-3: the anti-creepage high voltage dry-type current transformer of a kind of external force resistance damage, it comprises winding 1, secondary winding 2, base 3, shell 4, an Outgoing Line Unit 5 and a secondary Outgoing Line Unit 6; Winding comprises Primary Conductor 11, be used to support the shielded-plate tube 12 of Primary Conductor, be positioned at shielded-plate tube 12 outer insulating tape 13 and capacitance plate 14 (as shown in Figure 3); The bottom of a winding 1 is fixedly mounted on the base 3, and secondary winding 2 is sleeved on the bottom of a winding 1, and the lower seal of a secondary winding 2 and a winding 1 is contained in the shell 4, and winding 1 top passes the hole from shell 4; One time Outgoing Line Unit 5 is connected with winding 1 top; Secondary Outgoing Line Unit 6 is connected with secondary winding 2 by shell 4; Be set with high-strength porcelain bushing 7 outside the winding 1, be provided with colloidal state filling insulating material layer 8 between high-strength porcelain bushing 7 and a winding 1, high-strength porcelain bushing 7 and colloidal state filling insulating material layer 8 constitute the external insulation of a winding 1.
The insulating tape 13 of a described winding 1 is formed by solidifying silicone oil and oriented film, and the solidification of silicon oil level is between every strata tetrafluoroethene oriented film.
Described high-strength porcelain bushing 7 tops are connected with flange seal.
The utility model is not limited to above-mentioned concrete structure, is provided with colloidal state filling insulating material layer 8 between high-strength porcelain bushing 7 and high-strength porcelain bushing 7 and the winding 1 and just drops within the protection range of the present utility model as the high voltage dry-type current transformer of external insulation so long as adopt.
Claims (3)
1. the anti-creepage high voltage dry-type current transformer of external force resistance damage, it comprises winding, secondary winding, base, shell, Outgoing Line Unit and secondary Outgoing Line Unit; Winding comprises Primary Conductor, is used to support the shielded-plate tube of Primary Conductor, is positioned at shielded-plate tube outer insulating tape and capacitance plate; The bottom of a winding is fixedly mounted on the base, secondary winding is sleeved on the bottom of a winding, the lower seal of a secondary winding and a winding is cased, and a winding top passes the hole from shell, and high-strength porcelain bushing top is connected with flange seal; One time Outgoing Line Unit is connected with a winding top; The secondary Outgoing Line Unit is connected with secondary winding by shell; It is characterized in that: one time winding is set with high-strength porcelain bushing outward, is provided with colloidal state filling insulating material layer between high-strength porcelain bushing and a winding.
2. the anti-creepage high voltage dry-type current transformer of external force resistance damage according to claim 1 is characterized in that: the insulating tape of a described winding is formed by solidifying silicone oil and oriented film, and the solidification of silicon oil level is between every strata tetrafluoroethene oriented film.
3. the anti-creepage high voltage dry-type current mutual inductance of external force resistance damage according to claim 1 and 2, it is characterized in that: described high-strength porcelain bushing top is connected with flange seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200625766U CN201022050Y (en) | 2007-02-17 | 2007-02-17 | Outside force damage and theft prevention high voltage dry current mutual inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200625766U CN201022050Y (en) | 2007-02-17 | 2007-02-17 | Outside force damage and theft prevention high voltage dry current mutual inductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201022050Y true CN201022050Y (en) | 2008-02-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200625766U Expired - Fee Related CN201022050Y (en) | 2007-02-17 | 2007-02-17 | Outside force damage and theft prevention high voltage dry current mutual inductor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201022050Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102279344A (en) * | 2010-06-11 | 2011-12-14 | 李景禄 | Intelligent state sensor for distribution line |
| CN113674976A (en) * | 2021-07-27 | 2021-11-19 | 四川宝光电器设备有限公司 | Integrated current transformer, circuit breaker comprising same and control method |
-
2007
- 2007-02-17 CN CNU2007200625766U patent/CN201022050Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102279344A (en) * | 2010-06-11 | 2011-12-14 | 李景禄 | Intelligent state sensor for distribution line |
| CN113674976A (en) * | 2021-07-27 | 2021-11-19 | 四川宝光电器设备有限公司 | Integrated current transformer, circuit breaker comprising same and control method |
| CN113674976B (en) * | 2021-07-27 | 2023-08-18 | 四川宝光电器设备有限公司 | Integrated current transformer, circuit breaker comprising same and control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080213 Termination date: 20150217 |
|
| EXPY | Termination of patent right or utility model |