CN201663048U - Oilpaper-insulated upright-type current transformer - Google Patents
Oilpaper-insulated upright-type current transformer Download PDFInfo
- Publication number
- CN201663048U CN201663048U CN2010201109884U CN201020110988U CN201663048U CN 201663048 U CN201663048 U CN 201663048U CN 2010201109884 U CN2010201109884 U CN 2010201109884U CN 201020110988 U CN201020110988 U CN 201020110988U CN 201663048 U CN201663048 U CN 201663048U
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- CN
- China
- Prior art keywords
- current transformer
- primary conductor
- fuel tank
- porcelain bushing
- vertical current
- 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
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Abstract
The utility model discloses an oilpaper-insulated upright-type current transformer, comprising an expander, a connecting ring, a primary conducting bar, a high-voltage porcelain bushing, a primary conductor and an oil tank, wherein the front surface of the oil tank is provided with a secondary terminal board; the outer surface of the primary conductor is wrapped with a plurality of layers of cable papers and aluminium foil electric screens in an alternating manner, the primary conductor is arranged at the inner part of the high-voltage porcelain bushing and is of a 'U'-shaped structure; two feet of the 'U'-shaped structure of the primary conductor are close together, and the connecting position among the two feet and an arc bending at the lower part adopts an inward and opposite extruding mode to form the bending and combine a structure with jointed legs; a transition structure between the high-voltage porcelain bushing and the oil tank is profiled with the structure of the primary conductor at the inner part thereof, and simultaneously, the oil tank also adopts an elliptical profiling design which leads a product structure to be more compact and attractive; and compared with the original square straight-post-type design, the upright-type current transformer reduces fuel consumption by about 10-15%, and the total weight of the products is reduced by about 10%.
Description
Technical field
The utility model relates to the current transformer field, particularly a kind of paper oil insulation vertical current transformer.
Background technology
Current transformer is a kind of important power equipment; it is the transducer that secondary device such as measuring instrument, relaying protection obtains electric primary circuit current information in the electric power system; current transformer converts high electric current to low-voltage standards little electric current in proportion; the current transformer primary side is connected on primary system, secondary side joint measuring instrument, relaying protection etc.
Existing rated voltage is the just vertical high-tension current inductor of 110KV, normally Primary Conductor is finished " U " font, its outer multi-layer cable paper and aluminium foil electric screen of alternately being surrounded by, and the connector that its Primary Conductor occurs is more, secondary winding is sleeved on the bottom of a winding, and it is the lead-in wire position of a winding is good with the colligation of glass adhesive tape, vacuum drying treatment, reinstall fuel tank, put insulator and fill with transformer oil, adopt the current transformer of this mode, the transition structure between its insulator and the fuel tank all is the straight column type structure, do not have the profiling problem of consideration and Primary Conductor, thereby have the materials waste and influence problem attractive in appearance.In addition, existing fuel tank adopts square straight column type, does not have to consider and the conductor and the oval profiling problem of secondary winding of once having wrapped after insulating.
The utility model content
In view of this, the purpose of this utility model provides a kind of paper oil insulation vertical current transformer, intermediate location between fuel tank and the high voltage porcelain bushing, adopted imitated structure with Primary Conductor, make product structure compact, attractive in appearance more, can guarantee that the insulator assembling and the field intensity of uniform internal diameter meets design requirement simultaneously.
The purpose of this utility model is achieved through the following technical solutions: this paper oil insulation vertical current transformer, comprise expander, clamping ring, primary conductive row, high voltage porcelain bushing, Primary Conductor and fuel tank, the front of described fuel tank is provided with the secondary terminals daughter board, described Primary Conductor is arranged on the inside of high voltage porcelain bushing and is " U " shape structure, it is characterized in that: the bipod of described Primary Conductor " U " shape structure is drawn close mutually, bipod adopts the mode of inwardly relative extruding to form bending with the junction between the bottom arc is curved, form the structure that joins legs, the Primary Conductor structure profiling that the transition structure between described high voltage porcelain bushing and the fuel tank is inner with it.
Further, described transition structure is up-small and down-big imitated structure;
Further, the upper surface of described fuel tank is oval, and the lower surface of described transition structure is arranged on the center of fuel tank upper surface;
Further, arbitrary cross section of described fuel tank is ellipse, with the Primary Conductor and the secondary winding profiling of inside;
Further, the end of the main insulation electric capacity of described paper oil insulation vertical current transformer is arranged on the secondary terminals daughter board.
The beneficial effects of the utility model are:
1. Primary Conductor of the present utility model adopts " U " shape structure, transition structure between fuel tank and the high voltage porcelain bushing has adopted the structure with the Primary Conductor profiling, simultaneously, fuel tank has also adopted the elliptical cylinder-shape design, make product structure compact, attractive in appearance more, compare original straight column type design and reduced with oil mass about 10～15%; The total weight of product has reduced about 10%;
2. the utility model is an one with the end and the secondary terminals daughter board of main insulation electric capacity, has simplified the difficulty of processing, has also reduced the product breakthrough simultaneously;
3. the utility model adopts rational radius of curvature and takes effective reinforced insulation measure in the Primary Conductor position that joins legs, and guarantees that the insulator assembling and the field intensity of uniform internal diameter meets design requirement;
4. porcelain vase internal diameter of the present utility model has reduced 20mm with existing equivalents ratio, and the product oil mass reduces about 10kg, makes product appearance small and exquisite, attractive in appearance.
Other advantages of the present utility model, target and feature will be set forth to a certain extent in the following description, and to a certain extent, based on being conspicuous to those skilled in the art, perhaps can from practice of the present utility model, obtain instruction to investigating hereinafter.Target of the present utility model and other advantages can realize and obtain by following specification and claims.
Description of drawings
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing the utility model is described in further detail, wherein:
Fig. 1 is a front schematic view of the present utility model;
Fig. 2 is a side schematic view of the present utility model;
Fig. 3 is the structural representation of Primary Conductor.
Embodiment
Hereinafter with reference to accompanying drawing, preferred embodiment of the present utility model is described in detail.Should be appreciated that preferred embodiment only for the utility model is described, rather than in order to limit protection range of the present utility model.
As shown in Figure 1 and Figure 2, paper oil insulation vertical current transformer of the present utility model comprises expander 1, clamping ring 2, primary conductive row 3, high voltage porcelain bushing 4, Primary Conductor 5 and fuel tank 6, and the front of fuel tank 6 is provided with secondary terminals daughter board 7; The outer surface of Primary Conductor 5 alternately is surrounded by multi-layer cable paper and aluminium foil electric screen, is arranged on the inside of high voltage porcelain bushing 4.
As shown in Figure 3, Primary Conductor 5 is " U " shape structure, and its bipod is drawn close mutually, and bipod adopts the mode of inwardly relative extruding to form bending with the junction between the bottom arc is curved, forms the structure that joins legs.In the utility model, the Primary Conductor structure profiling that transition structure between high voltage porcelain bushing 4 and the fuel tank 68 is inner with it forms up-small and down-big oval frustum cone structure.By adopting contoured design, avoided the drawback of existing instrument transformer pattern heaviness, can economize on oil 10%～15% simultaneously.
Upper surface and arbitrary cross section of the fuel tank 6 in the present embodiment are ellipse, and with the Primary Conductor and the secondary winding profiling of inside, in addition, the lower surface of transition structure 8 is arranged on the center of fuel tank 6 upper surfaces.Adopt the purpose of this design to be to make package unit more compact, attractive in appearance, reduced the use of rapidoprint simultaneously, reduced manufacturing cost.
Main insulation of the present utility model is after finishing, putting into housing fixes, adopt multi-ply paper lath and profiling multi-ply paper lath to carry out spacing and fixing, and leave many places oil grooves flowing for transformer oil, the end of product main insulation electric capacity is cast on the secondary terminals daughter board 7, thereby make the dielectric dissipation factor of end screen little and stable, also reduced the many places leak source simultaneously for product.
The utility model is in conjunction with the operation present situation of old type tube product and the key technical indexes of product, adopt many main screens, thin insulating structure at the main insulation design aspect, improvement by the design and processes aspect, make the office of product discharge water flat had improved doubly a lot, adding under the anti-industrial frequency withstand voltage of 80% worker (under the 184kV, this control point GB and the equal no requirement (NR) of IEC standard) partial discharge quantity in advance less than 10PC; National standard and IEC are controlled to be to the requirement of partial discharge that partial discharge quantity is less than 10PC under the 126kV, and its impact resistance is good simultaneously, guarantees that its performance is more safe and reliable.
Explanation is at last, above embodiment is only unrestricted in order to the explanation the technical solution of the utility model, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from the aim and the scope of the technical program, it all should be encompassed in the middle of the claim scope of the present utility model.
Claims (5)
1. paper oil insulation vertical current transformer, comprise expander (1), clamping ring (2), primary conductive row (3), high voltage porcelain bushing (4), Primary Conductor (5) and fuel tank (6), the front of described fuel tank (6) is provided with secondary terminals daughter board (7), the outer surface of described Primary Conductor (5) alternately is surrounded by multi-layer cable paper and aluminium foil electric screen, be arranged on the inside of high voltage porcelain bushing (4) and be " U " shape structure, it is characterized in that: the bipod of described Primary Conductor (5) " U " shape structure is drawn close mutually, bipod adopts the mode of inwardly relative extruding to form bending with the junction between the bottom arc is curved, form the structure that joins legs, the Primary Conductor structure profiling that the transition structure (8) between described high voltage porcelain bushing (4) and the fuel tank (6) is inner with it.
2. paper oil insulation vertical current transformer according to claim 1 is characterized in that: described transition structure (8) is up-small and down-big imitated structure.
3. paper oil insulation vertical current transformer according to claim 1 and 2 is characterized in that: the upper surface of described fuel tank (6) is for oval, and the lower surface of described transition structure (8) is arranged on the center of fuel tank (6) upper surface.
4. paper oil insulation vertical current transformer according to claim 3 is characterized in that: arbitrary cross section of described fuel tank (6) is oval profiling.
5. paper oil insulation vertical current transformer according to claim 1 is characterized in that: the end of the main insulation electric capacity of described paper oil insulation vertical current transformer is arranged on the secondary connection plate (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201109884U CN201663048U (en) | 2010-02-09 | 2010-02-09 | Oilpaper-insulated upright-type current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201109884U CN201663048U (en) | 2010-02-09 | 2010-02-09 | Oilpaper-insulated upright-type current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201663048U true CN201663048U (en) | 2010-12-01 |
Family
ID=43233467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201109884U Expired - Fee Related CN201663048U (en) | 2010-02-09 | 2010-02-09 | Oilpaper-insulated upright-type current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201663048U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103746286A (en) * | 2014-01-07 | 2014-04-23 | 高秀敏 | Adjustable and controllable dye laser based on light fluid |
| CN105938155A (en) * | 2016-04-26 | 2016-09-14 | 广州供电局有限公司 | Current transformer |
-
2010
- 2010-02-09 CN CN2010201109884U patent/CN201663048U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103746286A (en) * | 2014-01-07 | 2014-04-23 | 高秀敏 | Adjustable and controllable dye laser based on light fluid |
| CN105938155A (en) * | 2016-04-26 | 2016-09-14 | 广州供电局有限公司 | Current transformer |
| CN105938155B (en) * | 2016-04-26 | 2019-03-22 | 广州供电局有限公司 | Current transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101201 Termination date: 20140209 |