CN2814639Y - Sulfur hexafluoride current mutual inductor - Google Patents
Sulfur hexafluoride current mutual inductor Download PDFInfo
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- CN2814639Y CN2814639Y CN 200520068474 CN200520068474U CN2814639Y CN 2814639 Y CN2814639 Y CN 2814639Y CN 200520068474 CN200520068474 CN 200520068474 CN 200520068474 U CN200520068474 U CN 200520068474U CN 2814639 Y CN2814639 Y CN 2814639Y
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- sulfur hexafluoride
- current mutual
- mutual inductor
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Abstract
The utility model relates to a sulfur hexafluoride current transformer which comprises a primary conducting rod, a shell, a secondary winding, a primary connecting terminal, a casing tube, etc., wherein the primary conducting rod penetrates through an inner shield and the secondary winding, extends out of the shell, and forms the current transformer, and the primary conducting rod is composed of a plurality of conducting rods which are shielded; the secondary winding is arranged in the shell of the inner shield, and both ends of the primary conducting rod are respectively and fixedly provided with the connecting terminal; the shell is formed by casting the alloy of aluminum, the bottom end of the inner cavity of the lower shell is arc-shaped and is in the shape of a curved surface, and the intersection between the bottom end of the inner cavity of the lower shell and a base plane is provided with a transitional circular arc. Because the primary conducting rod is composed of a plurality of conducting rods, different currents and voltages can be generated through the wire connection and the variation of the connecting terminal. Because an umbrella skirt adopts silicone rubber to be made into a whole, cracking and aging is avoided, and the ability of pollution flashover resistance is enhanced; because the inner shield is provided, the shell is made of the material of aluminum alloy, and design is optimized, the distribution of an electric field is improved and weight is reduced.
Description
Technical field
The utility model relates to a kind of current transformer that power industry is used, and saying so more specifically and adopting sulphur hexafluoride is a kind of sulfur hexafluoride current mutual inductor of medium.
Background technology
Relevant by retrieval patent documentation, not retrieving the employing sulphur hexafluoride identical with the utility model structure as yet at present is the sulfur hexafluoride current mutual inductor of medium.High-tension current inductor mainly contains two kinds at present: oil-immersed current transformer and sulfur hexafluoride current mutual inductor.Oil-immersed current transformer adopts the oilpaper wrapping as the main insulation body, and this structure wrapping and vacuum drying time of device body are longer, and as puncturing, main insulation can not be recovered, and main insulation is aging easily, and the annual chemical examination that need make oil, and dielectric loss is gone up easily.Sulfur hexafluoride current mutual inductor is that the good and stable SF6 gas of employing insulation property is medium, substitute paper oil insulation as main insulation, main insulation need not be wrapped up and device body vacuum drying treatment, the electrode of optimal design can guarantee that the local apparent discharge capacity of product is controlled at very low level, even high-energy discharge occurs, the pressure that is produced is advanced the speed the compressibility owing to insulating gas is become slowly, thereby has prevented breaking of transformer casing.The primary conductive bar of existing sulfur hexafluoride current mutual inductor generally all is a conducting rod, because structural reason is restricted the electric current of equipment, the adjustment of voltage, be difficult to satisfy actual needs, so be necessary to develop new current transformer to satisfy actual requirement.
Summary of the invention
The purpose of this utility model is that a kind of improvement on existing sulfur hexafluoride current mutual inductor will be provided, by pressing a some position changing-over, can conveniently realize multiple current ratio, and, improved a kind of sulfur hexafluoride current mutual inductor along the face electric field of internal electric field distribution and external insulation casing pipe greatly by optimal design.
Technical characterictic of the present utility model is: considering that changing-over is convenient, performance is designed to comprise the primary conductive bar on the more stable basis, housing, secondary winding, the primary connection terminal, flange, sleeve pipe, bucking electrode, the secondary lead wires pipe, base flange, base, the secondary connection terminal, a kind of sulfur hexafluoride current mutual inductor of inner shield, the primary conductive bar passes inner shield, secondary winding is stretched out housing and is constituted current transformer, the sleeve pipe that the below of housing is fixed with flange and is attached thereto, the secondary lead wires pipe links to each other with secondary winding, and passes bucking electrode, sleeve pipe is connected with secondary connection terminal on the base; Be full of sulfur hexafluoride gas in the seal that described housing, sleeve pipe, base form; Described primary conductive bar is made of through the overcoat shielded-plate tube at least two conducting rods, and secondary winding is arranged in the housing of inner shield that profile is the circular arc ring-type; Two ends at the primary conductive bar are fixed with the primary connection terminal respectively; Described sleeve pipe can be made of glass reinforced plastic pipe and insulator or glass reinforced plastic pipe and integral type silicon rubber full skirt.Described housing adopts the alloy aluminum casting to form.The lower housing cavity bottom of described housing is the arc shape curve form, is provided with a transition arc with the intersection, baseplane.Described flange adopts the aluminium alloy integral cast to be shaped, and its inner hole wall is provided with several seal groove.The glass reinforced plastic pipe of described sleeve pipe is the wound form glass reinforced plastic pipe.It is that material is made that bulk silicon rubber full skirt on the described sleeve pipe adopts high-temperature silicon disulfide rubber.Described bucking electrode adopts aluminium sheet to make, and its lower end is to lift up bent circular arc end face.Described base adopts aluminium alloy to cast, and its structure is the version that is connecting four splayed foots under the base plate.The aluminum enclosure that described inner shield is the circular arc ring-type by two half profile combines, and the outer surface of itself and secondary lead wires pipe phase connection is circular-arc curved surface.
During use, the binding post at primary conductive bar two ends is linked to each other with circuit, electric current flows through from the primary conductive bar, pass through electromagnetic induction, on secondary winding, induce electric current, reach the secondary connection terminal through the secondary lead wires pipe, line current information pass to detecting instrument, metering, control device.Be full of sulphur hexafluoride in housing and the sleeve pipe, its objective is the height insulation that the utilizes sulphur hexafluoride lonely performance of going out, the instrument transformer built-in electrical insulation is designed, the primary conductive bar is designed to the form of many root architectures, its objective is in order to increase the regulation stall of instrument transformer, fully adapt to various electrical equipment, situation designs the electric current of facility, the needs of voltage.
The utility model has the advantages that: owing to adopt many conducting rods to constitute the primary conductive bar, thus after the binding post wiring changes, can produce different current/voltages; Because the full skirt of sleeve pipe adopts silicon rubber to make whole version, thereby the phenomenon of having avoided traditional folded stationary full skirt to be prone to cracking, to wear out has improved the dirty ability of anti-sudden strain of a muscle; Because secondary winding is arranged in the inner shield that profile is the circular arc ring-type, it is that material is made that shell body adopts alloy aluminum, and through the electric Field Optimization structural design, thereby improved the distribution of internal electric field, make cavity internal pressure even, reduced local generation high-volume, and alleviated the weight of head; Because the flange of joint sleeve and the glass reinforced plastic pipe connection of sleeve pipe are provided with multiple-sealed groove, thereby have improved sealing property; Owing to be provided with bucking electrode, and adopt aluminium sheet to make its lower end to have and lift up bent circular arc, thereby reduced point discharge; Because it is material that base adopts aluminium alloy, thereby has improved rustless property, has alleviated its weight; Because rational in infrastructure, superior performance is so there is very big practical and popularizing value.
Description of drawings
Below with reference to description of drawings embodiment of the present utility model:
Accompanying drawing 1 is the structural representation of a kind of sulfur hexafluoride current mutual inductor of the utility model;
Accompanying drawing 2 is polycrystalline substance schematic diagrames of a kind of lower house of sulfur hexafluoride current mutual inductor housing;
Accompanying drawing 3 is structural representations of a kind of flange of sulfur hexafluoride current mutual inductor;
Accompanying drawing 4 is structural representations of a kind of bucking electrode of sulfur hexafluoride current mutual inductor;
Accompanying drawing 5 is structural representations of a kind of inner shield of sulfur hexafluoride current mutual inductor.
Embodiment
With reference to accompanying drawing 1, sulfur hexafluoride current mutual inductor described in the utility model, comprise primary conductive bar 1, housing 2, secondary winding 3, primary connection terminal 4, flange 5, sleeve pipe 6, bucking electrode 7, secondary lead wires pipe 8, base flange 9, base 10, secondary connection terminal 11, inner shield 12, primary conductive bar 1 passes inner shield 12, secondary winding 3 is stretched out housing 2 and is constituted current transformer, described primary conductive bar 1 is made of through the overcoat shielded-plate tube at least two conducting rods, the primary conductive bar 1 of present embodiment is designed to four: the two ends at every conducting rod of primary conductive bar 1 are fixed with primary connection terminal 4a with bolt respectively, 4b, several conducting rods can carry out parallel connection or make it become series connection by binding post, and the two ends of primary connection terminal link to each other with circuit.The below of housing 2 is fixed with flange 5 with bolt, carries out sealing and fixing by fluid sealant between flange 5 and the sleeve pipe 6.Secondary winding 3 is arranged in the housing of inner shield 12, and the profile of inner shield 12 is the circular arc ring-type; Secondary lead wires pipe 8 links to each other with secondary winding 3, and passes bucking electrode 7, sleeve pipe 6 and be connected with secondary connection terminal 11 on the base 10; Bucking electrode 7 is packed on the lower house of housing 2.In the seal that housing 2, sleeve pipe 6, base 10 form, be full of sulfur hexafluoride gas.Sleeve pipe 6 can be made of glass reinforced plastic pipe and insulator or glass reinforced plastic pipe and integral type silicon rubber full skirt, present embodiment is made of glass reinforced plastic pipe 6a and integral type silicon rubber full skirt 6b, glass reinforced plastic pipe 6a is the wound form glass reinforced plastic pipe, and it is that the material monolithic cast is made that silicon rubber full skirt 6b adopts high-temperature silicon disulfide rubber.The lower end of sleeve pipe 6 and base flange 9 sealing and fixing, base flange 9 usefulness bolts are packed on the base 10.Base 10 adopts aluminium alloy to cast, and its structure is the version that is connecting four splayed foot 10a under the base plate.
With reference to accompanying drawing 2, housing 2 adopts the alloy aluminum casting to form, and the lower housing cavity bottom 2a of housing 2 is the arc shape curve form, is provided with a transition arc 2b with the intersection, baseplane.
With reference to accompanying drawing 3, flange 5 adopts the aluminium alloy integral cast to be shaped, and its inner hole wall is provided with several seal groove 5a.
With reference to accompanying drawing 4, bucking electrode 7 adopts aluminium sheet to make, and its lower end 7a lifts up bent circular arc end face.
With reference to accompanying drawing 5, the aluminum enclosure 12a that inner shield 12 is the circular arc ring-type by two half profile combines, and the outer surface 12b of itself and secondary lead wires pipe 8 phase connections is circular-arc curved surface.
Claims (8)
1, a kind of sulfur hexafluoride current mutual inductor, comprise primary conductive bar (1), housing (2), secondary winding (3), primary connection terminal (4), flange (5), sleeve pipe (6), bucking electrode (7), secondary lead wires pipe (8), base flange (9), base (10), secondary connection terminal (11), inner shield (12), primary conductive bar (1) passes inner shield (12), secondary winding (3) is stretched out housing (2) and is constituted current transformer, the sleeve pipe (6) that the below of housing (2) is fixed with flange (5) and is attached thereto, secondary lead wires pipe (8) links to each other with secondary winding (3), and passes bucking electrode (7), sleeve pipe (6) is connected with secondary connection terminal (11) on the base (10); It is characterized in that: be full of sulfur hexafluoride gas in the seal that described housing (2), sleeve pipe (6), base (10) form; Described primary conductive bar (1) is made of through the overcoat shielded-plate tube at least two conducting rods, and secondary winding (3) is arranged in the housing of the inner shield that profile is the circular arc ring-type (12); Be fixed with primary connection terminal (4) respectively at the two ends of primary conductive bar (1); Described sleeve pipe (6) can be made of glass reinforced plastic pipe and insulator or glass reinforced plastic pipe and integral type silicon rubber full skirt.
2, a kind of sulfur hexafluoride current mutual inductor according to claim 1 is characterized in that: the lower housing cavity bottom of described housing (2) is the arc shape curve form, is provided with a transition arc with the intersection, baseplane.
3, a kind of sulfur hexafluoride current mutual inductor according to claim 1 is characterized in that: described flange (5) adopts the aluminium alloy integral cast to be shaped, and its inner hole wall is provided with several seal groove.
4, a kind of sulfur hexafluoride current mutual inductor according to claim 1 is characterized in that: the glass reinforced plastic pipe of described sleeve pipe (6) is the wound form glass reinforced plastic pipe.
5, according to claim 1 or 4 described a kind of sulfur hexafluoride current mutual inductors, it is characterized in that: it is that material is made that the bulk silicon rubber full skirt on the described sleeve pipe (6) adopts high-temperature silicon disulfide rubber.
6, a kind of sulfur hexafluoride current mutual inductor according to claim 1 is characterized in that: described bucking electrode (7) adopts aluminium sheet to make, and its lower end is to lift up bent circular arc end face.
7, a kind of sulfur hexafluoride current mutual inductor according to claim 1 is characterized in that: described base (10) adopts aluminium alloy to cast, and its structure is the version that is connecting four splayed foots under the base plate.
8, a kind of sulfur hexafluoride current mutual inductor according to claim 1, it is characterized in that: the aluminum enclosure that described inner shield (12) is the circular arc ring-type by two half profile combines, and the outer surface of itself and secondary lead wires pipe (8) phase connection is circular-arc curved surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520068474 CN2814639Y (en) | 2005-01-19 | 2005-01-19 | Sulfur hexafluoride current mutual inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520068474 CN2814639Y (en) | 2005-01-19 | 2005-01-19 | Sulfur hexafluoride current mutual inductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2814639Y true CN2814639Y (en) | 2006-09-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520068474 Expired - Fee Related CN2814639Y (en) | 2005-01-19 | 2005-01-19 | Sulfur hexafluoride current mutual inductor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2814639Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1808645B (en) * | 2005-01-19 | 2010-12-08 | 江苏思源赫兹互感器有限公司 | Sulfur hexafluoride current transformer |
| CN106783113A (en) * | 2015-11-19 | 2017-05-31 | 江苏华江科技有限公司 | A kind of gas storage cabinet device of new SF6 gas insulated high voltage current transformers |
-
2005
- 2005-01-19 CN CN 200520068474 patent/CN2814639Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1808645B (en) * | 2005-01-19 | 2010-12-08 | 江苏思源赫兹互感器有限公司 | Sulfur hexafluoride current transformer |
| CN106783113A (en) * | 2015-11-19 | 2017-05-31 | 江苏华江科技有限公司 | A kind of gas storage cabinet device of new SF6 gas insulated high voltage current transformers |
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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: 20060906 Termination date: 20100220 |