CN201421775Y - Outdoor reversed current transformer for electric locomotive - Google Patents
Outdoor reversed current transformer for electric locomotive Download PDFInfo
- Publication number
- CN201421775Y CN201421775Y CN2009203000968U CN200920300096U CN201421775Y CN 201421775 Y CN201421775 Y CN 201421775Y CN 2009203000968 U CN2009203000968 U CN 2009203000968U CN 200920300096 U CN200920300096 U CN 200920300096U CN 201421775 Y CN201421775 Y CN 201421775Y
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- voltage
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- outdoor
- secondary winding
- current transformer
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Abstract
The utility model relates to an outdoor reversed current transformer for an electric locomotive, which comprises an iron core, a primary winding, a secondary winding, a primary wiring terminal, a secondary junction box, a high-voltage main insulating body which is packed with the primary winding and the secondary winding, and a low-voltage insulating post which are compounded into an integral structure through insulating materials and are integrally mounted on a flat panel type chassis, wherein the high-voltage main insulating body is a cylindrical shape, whose lateral direction is arranged onthe positive upper portion of the low-voltage insulating post and periphery is provided with a round corner, a high-voltage screening net is arranged on the periphery of the secondary winding in thehigh-voltage main insulating body, the low-voltage insulating post is a vertically-placed cylinder shape, whose outer portion is provided with big and small spaced umbrella skirts in equal distance, and the secondary winding and a second winding supporting stand are arranged in the low-voltage insulating post. The outdoor reversed current transformer has the characteristics of high dynamic-thermalstable electric current, low temperature rise, even electric field, stable insulation, big creepage distance, pollution flashover prevention, total enclosure, long maintenance circle, small volume, convenient installation, high mechanical intensity and the like.
Description
Technical field
The utility model relates to a kind of electric power system high-pressure measurement mechanism, the outdoor inverted type current transformer of specifically a kind of use for electric locomotive.
Background technology
Outdoor Current Transformer is an equipment of measuring electric current, monitoring in real time or relaying protection in the electric locomotive system, the employed Outdoor Current Transformer of electric locomotive roof is a kind of at present is the current transformer that adopts paper oil insulation and magnetic bottle insulation, because outdoor dynamic operation environment is comparatively abominable, seepage oil often appears in current transformer, oil quality deterioration, magnetic bottle easily accumulates dirt and then pollution flashover voltage takes place, and need often safeguard and service work; Another kind is that mounting structure is the wall-penetrating type product on the basis of paper oil insulation, and using needs when installing to open a round installing hole in the locomotive roof, and instrument transformer additionally need be born the function of sealing.In a word, defectives such as which kind of product exists all that Heavy Weight, volume are big, the dynamic and thermal stability electric current is low, temperature rise, installation inconvenience, useful life are low, all the time being a puzzlement electric locomotive maintainer difficult problem, also is the problem of the urgent solution of institute in electric locomotive production domesticization and the electrified development.
The utility model content
At above shortcomings part in the prior art, the technical problems to be solved in the utility model provides the outdoor inverted type current transformer of use for electric locomotive that a kind of maintenance period is long, resistant is dodged, volume is little, simple in structure.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is:
The outdoor inverted type current transformer of a kind of use for electric locomotive of the utility model for by iron core, winding, secondary winding, primary connection terminal, a secondary connection box, seal winding and the high pressure main insulation body of secondary winding and the integral structure that the low-voltage insulation pillar is composited by insulating material, integral installation on plate base, described high pressure main insulation body be horizontally set at the low-voltage insulation pillar directly over, periphery has the column type of fillet.
The periphery of the inner secondary winding of described high pressure main insulation body is provided with the high-tension shielding net; Described low-voltage insulation pillar is the column type of vertically placing, and its outside equidistantly distributes the full skirt of size interval, built-in secondary winding lead-in wire and secondary winding support; Described secondary connection box is arranged with in the bottom of low-voltage insulation pillar; Described high pressure main insulation body is provided with attached full skirt by its axis and the outer periphery that is parallel to base.
The utlity model has following beneficial effect and advantage:
1. dynamic and thermal stability electric current height, temperature rise are low.The utility model adopts inverted structure, and winding and secondary winding all are positioned at the top of low-voltage insulation post, guarantees a dynamic and thermal stability current design of product height, can effectively avoid system short-circuit and overcurrent to cause the too high and insulation damages of instrument transformer temperature rise.
2. electric field is even, insulation is stable.The periphery of the inner secondary winding of high pressure main insulation body of the present utility model is provided with the high-tension shielding net, makes low voltage electric field effectively be isolated from high voltage electric field inside, and the product insulation is more stable.
3. big, the anti-pollution flashover of creepage distance.It is insulating material that the utility model adopts epoxy resin and silicon rubber compound inslation, low-voltage insulation pillar outside equidistantly distributes the full skirt of size interval, it is big to guarantee that product has very big surface creepage distance, has good hydrophobicity, improve pollution flashover voltage widely, can prevent the generation of pollution flashover fault effectively.
Volume little, be convenient to install, the mechanical strength height.The utility model adopts epoxy resin and silicon rubber compound inslation and into a single integrated structure, and small product size is little, in light weight; The column support type structure is avoided destruction and the poor sealing of old-fashioned infrastructure product to locomotive shell, can cooperate fully with the Vintage Product installation dimension, and is flexible for installation; And the mechanical strength height, can effectively guarantee product in the electric locomotive dynamic running process, have anti-vibrating and impact, fatigue strength high etc. advantage.
Description of drawings
Fig. 1 is the utility model external structure front view;
Fig. 2 is the utility model internal structure schematic diagram;
Fig. 3 is the utility model external structure end view.
Embodiment
As Figure 1-3, the outdoor inverted type current transformer of the utility model use for electric locomotive is by iron core 1, a winding 2, secondary winding 3, primary connection terminal 4, secondary connection box 5, seal winding 2 and the high pressure main insulation body 6 of secondary winding 3 and the integral structure that low-voltage insulation pillar 7 is composited by insulating material, wherein secondary winding 3 is wound on the iron core 1 of circular ring type equably, and auxiliary wrapping insulating material, one time winding 2 is the slab construction form for the centre that single turn runs through for the cylindrical bar two ends, has primary connection terminal 4 through insulating after the processing that is welded and cushion wrapping and pass the endoporus of secondary winding 3, forming, the coil device body of winding 2 and secondary winding 3; Secondary winding 3 adopts special secondary support 10 to be fixed on the mould, the primary connection terminal 4 of a winding 2 is fixed on the mould, more even in order to guarantee the inside and outside electric field, pre-processed high-tension shielding net 9 is fixed on winding 2, and then connect the secondary winding lead terminal, adjust distance back epoxide resin vacuum cast cured explosive and silicon rubber compound inslation, become an integral structure by primary connection terminal 4, high pressure main insulation body 6, low-voltage insulation pillar 7, secondary connection box 5, last integral installation is on plate base 8 thereupon.
In the utility model, seal high pressure main insulation body 6 horizontally set directly over low-voltage insulation pillar 7 of winding 2 and secondary winding 3, for periphery has the cylindrical of fillet, can effectively guarantee rainwater, conduction dirt when helping product and moving out of doors and wash away; Seal the structure that the high pressure main insulation body 6 of winding 2 and secondary winding 3 utilizes low-voltage insulation pillar 7 to hold, being different from general current transformer high pressure main insulation body is horizontal type structure, but formation inverted structure as shown in Figure 1, promptly merely from appearance structure, the utility model upper volume is bigger, the bottom volume is less, otherwise conventional current instrument transformer of the prior art or voltage transformer are then.Inverted structure biggest advantage is the coiling processing of being convenient to a winding, and one time winding can design very big sectional area, and electrical length is shorter, and temperature rise is too high in the time of can normally not moving because of a winding.The low-voltage insulation pillar 7 of sealing secondary winding lead-in wire and secondary winding support 10 is vertical be provided with cylindrical, its outside equidistantly distributes the silicon rubber full skirt 11 of size interval, not only make product have bigger surface creepage distance, and strengthen the insulation level under the outdoor ruuning situation of product; Secondary connection box 5 is positioned at the bottom of low-voltage insulation pillar 7, and integral body is recessed in low-voltage insulation pillar 7 inside, can effectively guarantee the sealing of secondary connection terminal, can short circuit, corrosion because rainwater soaks, influence current measurement; The outer periphery that passes through its axis and be parallel to base 8 of sealing the high pressure main insulation body 6 of winding 2 and secondary winding 3 is provided with attached full skirt 12, can increase insulation level, guarantees not occur pollution flashover voltage.
Claims (5)
1. the outdoor inverted type current transformer of a use for electric locomotive, for by iron core, winding, secondary winding, primary connection terminal, a secondary connection box, seal winding and the high pressure main insulation body (6) of secondary winding (3) and the integral structure that low-voltage insulation pillar (7) is composited by insulating material, integral installation is characterized in that on plate base (8): described high pressure main insulation body (6) for be horizontally set at low-voltage insulation pillar (7) directly over, periphery has the column type of fillet.
2. by the outdoor inverted type current transformer of the described use for electric locomotive of claim 1, it is characterized in that: the periphery of the inner secondary winding of described high pressure main insulation body (6) (3) is provided with high-tension shielding net (9).
3. by the outdoor inverted type current transformer of the described use for electric locomotive of claim 1, it is characterized in that: the column type of described low-voltage insulation pillar (7) for vertically placing, its outside equidistantly distributes the full skirt (11) of size interval, built-in secondary winding lead-in wire and secondary winding support (10).
4. by the outdoor inverted type current transformer of the described use for electric locomotive of claim 1, it is characterized in that: described secondary connection box (5) is arranged with in the bottom of low-voltage insulation pillar (7).
5. by the outdoor inverted type current transformer of the described use for electric locomotive of claim 1, it is characterized in that: described high pressure main insulation body (6) is provided with attached full skirt (12) by its axis and the outer periphery that is parallel to base (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203000968U CN201421775Y (en) | 2009-01-07 | 2009-01-07 | Outdoor reversed current transformer for electric locomotive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203000968U CN201421775Y (en) | 2009-01-07 | 2009-01-07 | Outdoor reversed current transformer for electric locomotive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201421775Y true CN201421775Y (en) | 2010-03-10 |
Family
ID=41808436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203000968U Expired - Lifetime CN201421775Y (en) | 2009-01-07 | 2009-01-07 | Outdoor reversed current transformer for electric locomotive |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201421775Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102005293A (en) * | 2010-11-09 | 2011-04-06 | 大连华亿电力电器有限公司 | Current transformer |
| CN104143421A (en) * | 2014-08-12 | 2014-11-12 | 湖南大北互互感器有限公司 | Outdoor totally-enclosed composite insulated supporter type current transformer |
| CN104240928A (en) * | 2014-09-18 | 2014-12-24 | 江苏科兴电器有限公司 | All-working-condition type low-voltage current transformer |
-
2009
- 2009-01-07 CN CN2009203000968U patent/CN201421775Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102005293A (en) * | 2010-11-09 | 2011-04-06 | 大连华亿电力电器有限公司 | Current transformer |
| CN104143421A (en) * | 2014-08-12 | 2014-11-12 | 湖南大北互互感器有限公司 | Outdoor totally-enclosed composite insulated supporter type current transformer |
| CN104240928A (en) * | 2014-09-18 | 2014-12-24 | 江苏科兴电器有限公司 | All-working-condition type low-voltage current transformer |
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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: 20100310 |
|
| CX01 | Expiry of patent term |