CN201773690U - Hairpin type current transformer used for high-voltage direct current - Google Patents
Hairpin type current transformer used for high-voltage direct current Download PDFInfo
- Publication number
- CN201773690U CN201773690U CN2010202243077U CN201020224307U CN201773690U CN 201773690 U CN201773690 U CN 201773690U CN 2010202243077 U CN2010202243077 U CN 2010202243077U CN 201020224307 U CN201020224307 U CN 201020224307U CN 201773690 U CN201773690 U CN 201773690U
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- hair fastener
- winding
- fastener type
- current transformer
- fuel tank
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Abstract
The utility model relates to high voltage electricity current measurement equipment and discloses a hairpin type current transformer used for high-voltage direct current. The current transformer comprises a hairpin type primary winding, a secondary winding, an oil box, a straight sleeve, a porcelain box cap and an expander, wherein the hairpin type primary winding consists of an upper parallel lead section and a lower curve surrounding section, the secondary winding is sheathed on the lower curve surrounding section of the hairpin type primary winding, and the straight sleeve, the porcelain box cap and the expander are sequentially arranged on the oil box, wherein the lower curve surrounding section of the hairpin type primary winding is positioned in the oil box, and the upper parallel lead section runs through the straight sleeve and leads two high-voltage terminal blocks out from two sides of the porcelain box cap respectively; and the secondary winding leads a low-voltage terminal block to be out from the oil box.
Description
Technical field
The utility model relates to the high-tension electricity current measure device, particularly a kind of hair fastener type high voltage direct current Current Transformer.
Background technology
At present, the current transformer of high-tension electricity transmission line mostly is " U " type structure greatly, and the sleeve pipe that this structure is used is turriform, and volume is big, the cost height.
Summary of the invention
The purpose of this utility model is to provide a kind of hair fastener type high voltage direct current Current Transformer, and its external insulation adopts straight connector, and volume is little, and cost is low.
In order to achieve the above object, the utility model is achieved by the following technical solutions.
A kind of hair fastener type high voltage direct current Current Transformer, it is characterized in that, comprise winding of hair fastener type of forming around section by upper parallel lead segments and lower curve, be sleeved on the secondary winding of the lower curve of a winding of hair fastener type around section, fuel tank, and be successively set on straight connector, porcelain box cap and expander on the fuel tank; The lower curve of a winding of described hair fastener type is positioned at described fuel tank around section, and the upper parallel lead segments runs through straight connector and draws two-supremes crimping line terminals respectively from the porcelain box cap both sides; Described secondary winding is drawn low-voltage wiring terminal from fuel tank.
Further improvement of the utility model is, winding of described hair fastener type set gradually from inside to outside the high pressure screen that is used to insulate, shield; It further improves and is, between the high pressure screen of described upper parallel lead segments and the ground screen multilayer end screen is set.
In structural design of the present utility model, one time winding adopts hair fastener type structure, in its upper parallel lead segments insulation system design main screen in the middle of traditional capacitor type insulating is removed, zero screen and ground screen have been kept, between two screens, be provided with tens of layers of end screen, and change original turriform sleeve pipe into straight connector, and fuel tank adopts imitative type design, product has that compact conformation is attractive in appearance, volume is little, in light weight, characteristics that cost is low thereby make.
Description of drawings
Fig. 1 is the structural representation of a kind of 110kV hair fastener type high voltage direct current Current Transformer of the present utility model; Fig. 2 is the secondary winding in embodiment illustrated in fig. 1 and the structural representation of a winding of hair fastener type; Fig. 3 is the insulation system schematic diagram of the upper parallel lead segments of a winding of hair fastener type among Fig. 2; Among the figure: 1, fuel tank; 2, straight connector; 3, porcelain box cap; 4, expander; 5, winding of hair fastener type; 501, high pressure screen; 502, end screen; 503, shield; 6, secondary winding.
Embodiment
Referring to Fig. 1, be a kind of 110kV hair fastener type high voltage direct current Current Transformer, be provided with fuel tank 1, fuel tank 1 passes through top seal, offer on the top cover and the identical via hole of straight connector 2 internal diameters, the bottom of straight connector 2 is vertically fixing by bolt over against via hole, and the top of the bottom of straight connector 2 is by the bottom of flange and porcelain box cap 3, and porcelain box cap 3 tops are provided with the folded formula expander 4 of PBD.Fuel tank 1, straight connector 2 (being straight porcelain bushing), porcelain box cap 3, expander 4 are formed an airtight container, wherein fill insulating oil.
In conjunction with Fig. 2, a winding of present embodiment is the hair fastener type, winding 5 of hair fastener type is made up of around section upper parallel lead segments and lower curve, secondary winding 6 is sleeved on the lower curve of a winding 5 of hair fastener type around section, lower curve is positioned at fuel tank around section and secondary winding 6, the upper parallel lead segments runs through straight connector and draws two-supremes crimping line terminals from porcelain box cap 3 both sides respectively in fuel tank, is used to insert high tension loop; Secondary winding 6 is drawn low-voltage wiring terminal from fuel tank, is used for inserting measuring the loop.
In conjunction with Fig. 3 (only illustrating the insulation system of upper parallel lead segments among the figure), winding 5 of hair fastener type set gradually from inside to outside the high pressure screen 501 that is used to insulate, shield 503, and between the high pressure screen 501 of upper parallel lead segments and ground screen 503, multilayer end screen 502 is set.High pressure screen 501 and ground screen 503 materials are the copper wire band, end screen 502 materials are aluminium foil, specifically under power-frequency withstand voltage 200kV, total insulation thickness 96mm, the condition of axial dielectric apart from 1200mm, insulation thickness is between 0.8mm～1.1mm, the ladder difference is between 27mm～36mm, screen is long to be designed to 200mm, shields several 22.Above-mentioned parameter can satisfy under the industrial frequency experiment voltage radially high field intensity less than 13kV/mm, and axially high field intensity is less than the insulating requirements of 0.5kV/mm.
Claims (3)
1. hair fastener type high voltage direct current Current Transformer, it is characterized in that, comprise winding of hair fastener type of forming around section by upper parallel lead segments and lower curve, be sleeved on the secondary winding of the lower curve of a winding of hair fastener type around section, fuel tank, and be successively set on straight connector, porcelain box cap and expander on the fuel tank; The lower curve of a winding of described hair fastener type is positioned at described fuel tank around section, and the upper parallel lead segments runs through straight connector and draws two-supremes crimping line terminals respectively from the porcelain box cap both sides; Described secondary winding is drawn low-voltage wiring terminal from fuel tank.
2. hair fastener type high voltage direct current Current Transformer according to claim 1 is characterized in that, winding of described hair fastener type set gradually from inside to outside the high pressure screen that is used to insulate, shield.
3. hair fastener type high voltage direct current Current Transformer according to claim 2 is characterized in that, between the high pressure screen of described upper parallel lead segments and the ground screen multilayer end screen is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202243077U CN201773690U (en) | 2010-06-12 | 2010-06-12 | Hairpin type current transformer used for high-voltage direct current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202243077U CN201773690U (en) | 2010-06-12 | 2010-06-12 | Hairpin type current transformer used for high-voltage direct current |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201773690U true CN201773690U (en) | 2011-03-23 |
Family
ID=43753533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202243077U Expired - Lifetime CN201773690U (en) | 2010-06-12 | 2010-06-12 | Hairpin type current transformer used for high-voltage direct current |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201773690U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103187161A (en) * | 2013-01-31 | 2013-07-03 | 浙江天际互感器有限公司 | Primary winding of dry-type composite insulation current transformer and application of primary winding |
| WO2014169675A1 (en) * | 2013-04-16 | 2014-10-23 | 浙江天际互感器有限公司 | Primary winding of dry-type composite insulation current transformer, and application of primary winding |
-
2010
- 2010-06-12 CN CN2010202243077U patent/CN201773690U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103187161A (en) * | 2013-01-31 | 2013-07-03 | 浙江天际互感器有限公司 | Primary winding of dry-type composite insulation current transformer and application of primary winding |
| WO2014169675A1 (en) * | 2013-04-16 | 2014-10-23 | 浙江天际互感器有限公司 | Primary winding of dry-type composite insulation current transformer, and application of primary winding |
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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: 20110323 |
|
| CX01 | Expiry of patent term |