CN204991429U - Insulator formula compound inslation dry -type current transformer - Google Patents
Insulator formula compound inslation dry -type current transformer Download PDFInfo
- Publication number
- CN204991429U CN204991429U CN201520746073.5U CN201520746073U CN204991429U CN 204991429 U CN204991429 U CN 204991429U CN 201520746073 U CN201520746073 U CN 201520746073U CN 204991429 U CN204991429 U CN 204991429U
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- external insulation
- insulator
- current transformer
- insulation insulator
- pressure
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Abstract
The utility model relates to an electric power system high voltage measurement device, specifically speaking are insulator formula compound inslation dry -type current transformer, are equipped with a partial conductor and pressure -equalizing device, including external insulation insulator and insulating compound, external insulation insulator both ends are continuous with the pressure -equalizing device of a partial conductor respectively, pack through the insulating compound between an external insulation insulator and the partial conductor, the lateral surface of external insulation insulator is the alternate structure of big umbellule along length direction, and every umbrella is the arc end along the edge. The utility model discloses an outer insulation system of insulator formula effectively avoids the be injured fracture of external insulation.
Description
Technical field
The utility model relates to a kind of electric power system high-pressure measurement mechanism, specifically a kind of porcelain bushing type combined insulated dry current transformer.
Background technology
Outdoor high-voltage current transformer is the equipment measuring electric current, electric energy metrical or relaying protection in electric power system; current high-tension current inductor is divided into oil immersed type and dry type (compound inslation) two kinds of structures, and combined insulated dry current transformer due to have without oil, without gas (SF6), non-leakage, do not explode, not aging, no environmental pollution, volume are little, lightweight, easy maintenance, advanced technology, the feature such as safe and reliable and widely user's employing.As shown in Figure 1, what traditional combined insulated dry current transformer external insulation structure adopted is silicon rubber external insulation structure, the external insulation structure made due to silicon rubber is softer, the injured cracking of capacity, the especially more easy shortcoming such as injured in environment serious pollution and the larger area of dust storm, thus this kind of product needs regularly special maintenance and maintenance, and working life is low; Above problems are a puzzlement power system operation and maintainer's difficult problem all the time, the problem being also the transformation of electric power system outdoor dry-type high-voltage current transformer and urgently solving in developing.
Utility model content
The purpose of this utility model is to provide a kind of porcelain bushing type combined insulated dry current transformer, adopts porcelain bushing type external insulation structure, effectively avoids the injured cracking of external insulation.
The purpose of this utility model is achieved through the following technical solutions:
A kind of porcelain bushing type combined insulated dry current transformer, be provided with Primary Conductor and pressure-equalizing device, also comprise external insulation insulator and insulating paste, described external insulation insulator two ends are connected with the pressure-equalizing device in Primary Conductor respectively, are filled between described external insulation insulator and Primary Conductor by insulating paste.
The lateral surface of described external insulation insulator alongst sized by umbrella interphase structure, each umbrella is arc end along edge.
Described external insulation insulator two ends are connected with the pressure-equalizing device of Primary Conductor respectively by flange.
Be provided with porcelain sand surface layer between described external insulation insulator and flange, described porcelain sand surface layer is provided with silicon rubber away from the outermost of flange disk.
Advantage of the present utility model and good effect are:
1, the utility model due to external insulation insulator surface ratio harder, enhance bending strength, be not easy to affect by dust storm etc. to occur cracking phenomena, and there is good uvioresistant, wind erosion-resistance performance, do not need periodic maintenance, extend useful life.
2, the utility model adopts external insulation insulator, ensure that product has very large surface insulation and good tracking resistance and electrical erosion resistance energy, greatly increase pollution flashover voltage, effectively can prevent the generation of pollution flashover fault, test result meets the requirement of national standard completely.
3, the structure that sized by external insulation insulator outer surface of the present utility model, umbrella is alternate, each umbrella of every platform is equipped with the arc end with certain circular arc degree along edge, increases overall creepage distance.
4, external insulation insulator two ends of the present utility model are connected with the pressure-equalizing device of Primary Conductor respectively by flange, porcelain sand surface layer is provided with outside between insulated porcelain sleeve and flange, and described porcelain sand surface layer is provided with silicon rubber away from the outermost of flange disk, realizes insulated enclosure.
Accompanying drawing explanation
Fig. 1 is that the external insulation structure (silastic structure) of prior art arranges schematic diagram,
Fig. 2 is layout schematic diagram of the present utility model,
Fig. 3 is the cutaway view of Fig. 2 China and foreign countries insulated porcelain sleeve,
Fig. 4 is the I place enlarged drawing in Fig. 3,
Fig. 5 is II place's enlarged drawing in Fig. 3.
Wherein, 1 is external insulation insulator, and 2 is flange, and 3 is porcelain sand surface layer, and 4 is silicon rubber, and 5 is arc end.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in figures 2-3, the utility model comprises external insulation insulator 1, flange 2 and insulating paste, described external insulation insulator 1 two ends are connected with the pressure-equalizing device of Primary Conductor respectively by flange 2, filled by insulating paste between described external insulation insulator 1 and Primary Conductor, make that external insulation is creepage to carry out along insulator surface.Described external insulation insulator, insulating paste and Primary Conductor form a second part of current sensor jointly.Described insulating paste is techniques well known.
The lateral surface of described external insulation insulator 1 alongst sized by umbrella interphase structure, as shown in Figure 5, each umbrella is the arc end 5 with certain circular arc degree along edge, so just increases overall creepage distance.
As shown in Figure 4, in the end of described external insulation insulator 1, be provided with porcelain sand surface layer 3 between insulated porcelain sleeve 1 and flange 2 outside, and described porcelain sand surface layer 3 seals further by silicon rubber 4 away from the outermost of flange 2 disk.
Operation principle of the present utility model is:
Described external insulation insulator, insulating paste and Primary Conductor form a second part of current sensor jointly, make that external insulation is creepage to carry out along insulator surface, and each umbrella is the arc end 5 with certain circular arc degree along edge, so just increase overall creepage distance.
Claims (4)
1. a porcelain bushing type combined insulated dry current transformer, be provided with Primary Conductor and pressure-equalizing device, it is characterized in that: comprise external insulation insulator (1) and insulating paste, described external insulation insulator (1) two ends are connected with the pressure-equalizing device in Primary Conductor respectively, are filled between described external insulation insulator (1) and Primary Conductor by insulating paste.
2. porcelain bushing type combined insulated dry current transformer according to claim 1, it is characterized in that: the lateral surface of described external insulation insulator (1) alongst sized by umbrella interphase structure, each umbrella is arc end (5) along edge.
3. porcelain bushing type combined insulated dry current transformer according to claim 1, is characterized in that: described external insulation insulator (1) two ends are connected with the pressure-equalizing device of Primary Conductor respectively by flange (2).
4. porcelain bushing type combined insulated dry current transformer according to claim 1, it is characterized in that: be provided with porcelain sand surface layer (3) between described external insulation insulator (1) and flange (2), described porcelain sand surface layer (3) is provided with silicon rubber (4) away from the outermost of flange (2) disk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520746073.5U CN204991429U (en) | 2015-09-24 | 2015-09-24 | Insulator formula compound inslation dry -type current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520746073.5U CN204991429U (en) | 2015-09-24 | 2015-09-24 | Insulator formula compound inslation dry -type current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204991429U true CN204991429U (en) | 2016-01-20 |
Family
ID=55125771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520746073.5U Expired - Fee Related CN204991429U (en) | 2015-09-24 | 2015-09-24 | Insulator formula compound inslation dry -type current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204991429U (en) |
-
2015
- 2015-09-24 CN CN201520746073.5U patent/CN204991429U/en not_active Expired - Fee Related
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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: 20160120 Termination date: 20210924 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |