CN202473586U - Insulation structure of current transformer for electric locomotive - Google Patents
Insulation structure of current transformer for electric locomotive Download PDFInfo
- Publication number
- CN202473586U CN202473586U CN2012201049543U CN201220104954U CN202473586U CN 202473586 U CN202473586 U CN 202473586U CN 2012201049543 U CN2012201049543 U CN 2012201049543U CN 201220104954 U CN201220104954 U CN 201220104954U CN 202473586 U CN202473586 U CN 202473586U
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- CN
- China
- Prior art keywords
- electric
- insulation
- sleeve
- current transformer
- sleeve pipe
- 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
- 238000009413 insulation Methods 0.000 title claims abstract description 25
- 230000003137 locomotive effect Effects 0.000 title claims abstract description 16
- 238000004804 winding Methods 0.000 claims abstract description 10
- 239000003990 capacitor Substances 0.000 claims abstract description 6
- 239000002131 composite material Substances 0.000 claims abstract description 6
- 229920002379 silicone rubber Polymers 0.000 claims abstract description 6
- 239000004945 silicone rubber Substances 0.000 claims abstract description 6
- 239000003822 epoxy resin Substances 0.000 claims abstract description 5
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 5
- 230000004888 barrier function Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 2
- 239000004020 conductor Substances 0.000 abstract 1
- 238000012423 maintenance Methods 0.000 abstract 1
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 2
- 229910052573 porcelain Inorganic materials 0.000 description 2
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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Abstract
The utility model provides an insulation structure of a current transformer for an electric locomotive. The insulation structure comprises a pouring body and a sleeve penetrating the middle of the pouring body, wherein secondary windings are encapsulated in the pouring body; the top end of the sleeve is fixedly connected with a primary electric conductor; and the sleeve is a capacitive composite silicone rubber insulating wall feed-through sleeve. The utility model has the advantages and positive results that as the capacitive composite silicone rubber insulating wall feed-through sleeve is adopted, the radial dimension of an iron core is greatly reduced, and accordingly the size and the weight of the whole product are effectively reduced; epoxy resin casts the whole sealing structure, the potential hazard that the product is probably subject to leakage and dampened is eliminated, insulation and reliability are achieved and maintenance is avoided; and as the capacitive insulation structure is adopted, the difference between field strengths on the surfaces of all electric screens of serially connected capacitors are further reduced along with the quantity increase of the electric screens, and the insulation power can be utilized more sufficiently.
Description
Technical field
The utility model belongs to electric power system high-pressure measurement mechanism field, especially relates to a kind of insulation system of electric locomotive Current Transformer.
Background technology
The electric locomotive Current Transformer is loaded on the electric locomotive top, is high pressure unique passage into the car, cooperates with overcurrent relay simultaneously, and as the former limit overcurrent protection of electric locomotive main circuit, its reliability is related to the security of operation of electric locomotive.
The insulation system of traditional current transformer is installed insulating sleeve for the pour mass end; Said sleeve pipe is an insulated porcelain sleeve, and this structure is prone to take place flashover and bursts when running into filth or wet weather; Cause the tripping operation of traction power supply electric substation; Even blow contact line conducting wire, thus cause accidents such as disrupted circuit transportation, influence the order of railway normal transport.
And, owing to adopt the porcelain sleeve structure, cause the current transformer complex structure that matches, oversize, the influence of these factors causes the whole volume and weight of product huge.
Summary of the invention
The problem that the utility model will solve provides a kind of insulation system of reliable, electric locomotive Current Transformer that volume is little.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is:
A kind of insulation system of electric locomotive Current Transformer; Comprise pour mass and the sleeve pipe that passes the pour mass middle part; Seal secondary winding in the said pour mass, pass on it on upper surface of sleeve pipe and be provided with the annular block that the circular hole outside is the full skirt shape through the bolt center; The top of said sleeve pipe is fixedly connected the primary conductive body; Said sleeve pipe is condenser type composite silicone rubber insulation wall bushing; Be provided with some middle electric screens in the middle of in its insulating barrier; A capacitor is formed in per two electric screens and middle insulation thereof; Be electrically connected with immediate electric screen of winding and primary conductive body, with the immediate electric screen ground connection of secondary winding.
Further, said pour mass is an epoxy resin poured body.
Further, the outside of the said sleeve pipe full skirt of size interval that is equally spaced, thus have bigger surface creepage distance, also strengthen the insulation level under the outdoor ruuning situation.
Advantage and the good effect that the utlity model has are:
Because adopt condenser type composite silicone rubber insulation wall bushing, the radial dimension of the iron core of the current transformer that matches reduces greatly, thereby effectively reduced the whole volume and weight of product; Adopt simple, reliable poured with epoxy resin integral sealing structure, eliminated product possibility seepage and the hidden danger of making moist, insulation is reliable, and is non-maintaining; The capacitor type insulating structure: the difference of each electric screen surface electric field intensity of series capacitor will further be dwindled along with the increase of electric screen number, and insulation can obtain utilizing more fully.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Among the figure:
1, pour mass 2, sleeve pipe 3, primary conductive body
4, full skirt 5, block
Embodiment
As shown in Figure 1, a kind of embodiment preferred of the utility model is:
A kind of insulation system of electric locomotive Current Transformer comprises epoxy resin poured body 1 and the sleeve pipe 2 that passes pour mass 1 middle part; Seal secondary winding in the said pour mass 1, pass on it on upper surface of sleeve pipe 2 and be provided with the annular block 5 that the circular hole outside is the full skirt shape through the bolt center; The top of said sleeve pipe 2 is fixedly connected primary conductive body 3; Said sleeve pipe 2 is condenser type composite silicone rubber insulation wall bushing; Be provided with some middle electric screens in the middle of in its insulating barrier; A capacitor is formed in per two electric screens and middle insulation thereof, is electrically connected with immediate electric screen of winding and primary conductive body 3, with the immediate electric screen ground connection of secondary winding; The be equally spaced full skirt 4 of size interval of the outside of said sleeve pipe 2.
The course of work of this instance: at first; The roof of the electric locomotive of current transformer being installed at needs is opened the installing hole of a circle; Above-mentioned installing hole is aimed in the installation position of this current transformer, the top that annular block 5 just in time covers in electric locomotive, sealing and fixing.
More than the embodiment of the utility model is specified, but said content is merely the preferred embodiment of the utility model, can not be considered to be used to limit the practical range of the utility model.All equalizations of doing according to the utility model application range change and improve etc., all should still belong within the patent covering scope of the utility model.
Claims (3)
1. the insulation system of an electric locomotive Current Transformer comprises pour mass (1) and passes the sleeve pipe (2) at pour mass (1) middle part that said pour mass is sealed secondary winding in (1); The top of said sleeve pipe (2) is fixedly connected primary conductive body (3); It is characterized in that:
Pass on the said pour mass (1) on the upper surface of sleeve pipe (2) and be provided with the annular block (5) that the circular hole outside is the full skirt shape through the bolt center; Said sleeve pipe (2) is condenser type composite silicone rubber insulation wall bushing; Be provided with some middle electric screens in the middle of in its insulating barrier; A capacitor is formed in per two electric screens and middle insulation thereof; Be electrically connected with immediate electric screen of winding and primary conductive body (3), with the immediate electric screen ground connection of secondary winding.
2. the insulation system of electric locomotive Current Transformer according to claim 1 is characterized in that: said pour mass (1) is an epoxy resin poured body.
3. the insulation system of electric locomotive Current Transformer according to claim 1 is characterized in that: the be equally spaced full skirt (4) of size interval of the outside of said sleeve pipe (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201049543U CN202473586U (en) | 2012-03-20 | 2012-03-20 | Insulation structure of current transformer for electric locomotive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201049543U CN202473586U (en) | 2012-03-20 | 2012-03-20 | Insulation structure of current transformer for electric locomotive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202473586U true CN202473586U (en) | 2012-10-03 |
Family
ID=46921730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201049543U Expired - Fee Related CN202473586U (en) | 2012-03-20 | 2012-03-20 | Insulation structure of current transformer for electric locomotive |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202473586U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105186417A (en) * | 2015-08-26 | 2015-12-23 | 芜湖市凯鑫避雷器有限责任公司 | High-voltage wall bushing with double-layer crack monitoring device |
| CN114050041A (en) * | 2021-11-17 | 2022-02-15 | 许昌许继软件技术有限公司 | High-voltage bushing integrated with low-power-consumption current transformer coil |
| US20230110022A1 (en) * | 2021-10-11 | 2023-04-13 | Schweitzer Engineering Laboratories, Inc. | Polymeric mounting suspension for a split core current transformer |
| US12500032B2 (en) | 2022-11-03 | 2025-12-16 | Schweitzer Engineering Laboratories, Inc. | Magnetic core winder for powerline-mounted devices |
-
2012
- 2012-03-20 CN CN2012201049543U patent/CN202473586U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105186417A (en) * | 2015-08-26 | 2015-12-23 | 芜湖市凯鑫避雷器有限责任公司 | High-voltage wall bushing with double-layer crack monitoring device |
| US20230110022A1 (en) * | 2021-10-11 | 2023-04-13 | Schweitzer Engineering Laboratories, Inc. | Polymeric mounting suspension for a split core current transformer |
| US11662369B2 (en) * | 2021-10-11 | 2023-05-30 | Schweitzer Engineering Laboratories, Inc. | Polymeric mounting suspension for a split core current transformer |
| CN114050041A (en) * | 2021-11-17 | 2022-02-15 | 许昌许继软件技术有限公司 | High-voltage bushing integrated with low-power-consumption current transformer coil |
| US12500032B2 (en) | 2022-11-03 | 2025-12-16 | Schweitzer Engineering Laboratories, Inc. | Magnetic core winder for powerline-mounted devices |
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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: 20121003 Termination date: 20150320 |
|
| EXPY | Termination of patent right or utility model |