CN201237973Y - Sulfur hexafluoride current mutual inductor with small-diameter casing tube - Google Patents
Sulfur hexafluoride current mutual inductor with small-diameter casing tube Download PDFInfo
- Publication number
- CN201237973Y CN201237973Y CNU2008200371980U CN200820037198U CN201237973Y CN 201237973 Y CN201237973 Y CN 201237973Y CN U2008200371980 U CNU2008200371980 U CN U2008200371980U CN 200820037198 U CN200820037198 U CN 200820037198U CN 201237973 Y CN201237973 Y CN 201237973Y
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- Prior art keywords
- sleeve pipe
- flange
- secondary winding
- mutual inductor
- sulfur hexafluoride
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Abstract
The utility model relates to a thin-diameter sleeve sulphur hexafluoride current transformer used in the electric power industry, which comprises a shell, a primary conducting rod, a secondary winding, a sleeve, a shielding electrode, a base flange, a wiring tube connector,and the like; wherein, the sleeve is connected with an upper flange; the shell is fixed on the upper flange; the secondary winding is arranged in the cavity of the shell; the primary conducting rod passes through internal shield and the secondary winding and is extended out of the shell, so that the current transformer is formed; a secondary wiring tube is connected with the secondary winding through the wiring tube connector; the sleeve is a thin-diameter sleeve; the shielding electrode is arranged outside the secondary wiring tube in the bore of the sleeve; and the lower end of the sleeve is provided with the base flange. Because the shape of the cavity of the shell is similar to the shape of the secondary winding, the internal electric field is optimized; since the sleeve is designed into the thin-diameter structure form, the overall weight is reduced; because the length of the conical surface of the shielding electrode is increased, the shielding effect is improved; and because the base flange is provided with a plurality of seal rings, the sealing property is improved.
Description
Technical field
The utility model relates to a kind of current transformer that power industry is used, and a kind of specifically sulphur hexafluoride that adopts is the thin diameter sleeve pipe sulfur hexafluoride current mutual inductor of medium.
Background technology
Relevant by retrieval patent documentation does not retrieve the thin diameter sleeve pipe sulfur hexafluoride current mutual inductor that the employing sulphur hexafluoride identical with the utility model structure is medium at present as yet.Existing high-tension current inductor can be divided into oil-immersed current transformer and sulfur hexafluoride current mutual inductor.Oil-immersed current transformer adopts the oilpaper wrapping as the main insulation body, and wrapping of this kind structure and vacuum drying time of device body are longer, and should puncture, and phenomenons such as aging take place main insulation easily.Sulfur hexafluoride current mutual inductor is that the SF6 gas of employing stable insulation is that medium is as main insulation, because it has good insulation and stability, so be widely used in High-Voltage Electrical Appliances, the name of the applicant's application is called " a kind of sulfur hexafluoride current mutual inductor ", the patent No. is " ZL200520068474.6 ", discloses to adopt the current transformer of sulphur hexafluoride as dielectric.The phenomenon that this patent has 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, has improved the distribution of internal electric field.But also because casing diameter is thicker, make weight heavier relatively, wind resistance is not ideal enough, thus be necessary existing product is improved, 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, and has the thin diameter sleeve pipe sulfur hexafluoride current mutual inductor of in light weight, wind resistance and good seal performance.
Technical characterictic of the present utility model is: considering that volume is little, in light weight, performance is designed to comprise housing on the more stable basis, the primary conductive bar, secondary winding, sleeve pipe, bucking electrode, the secondary lead wires pipe, base flange, the secondary connection terminal, upper flange, the thin diameter sleeve pipe sulfur hexafluoride current mutual inductor of fairlead joint, on sleeve pipe, be connected with upper flange, on upper flange, be fixed with housing, in the housing inner chamber, be provided with secondary winding, the primary conductive bar passes inner shield, secondary winding is stretched out housing and is constituted current transformer, in the inner chamber of sleeve pipe, be provided with the secondary lead wires pipe that links to each other with secondary winding, the secondary lead wires pipe is connected with secondary winding by the fairlead joint, and described sleeve pipe is thin diameter sleeve pipe; The periphery of secondary lead wires pipe is provided with bucking electrode in the inner chamber of sleeve pipe; The secondary lead wires pipe links to each other with secondary winding, is provided with base flange in the lower end of sleeve pipe; On base flange, be provided with the secondary connection terminal.
The inner chamber of described housing is the version similar with the profile of secondary winding.
Described sleeve pipe is that thin diameter sleeve pipe is meant that its endoporus is the wound form fiberglass full skirt sleeve pipe of Φ 280mm～Φ 320mm.
The length that its conical surface length 1 of described bucking electrode is 0.5～0.7 secondary lead wires pipe L.
Described base flange is made up of flange seal circle, flange, end face seal, is provided with the groove that several is used for device flange sealing ring on flange, is provided with the groove that is used for the device end face seal on flange.
Described fairlead joint is made up of fairlead plinth, fairlead sealing ring, and the fairlead sealing ring is arranged in the inner chamber groove of fairlead plinth.
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, utilize the high insulating property of sulphur hexafluoride, make the instrument transformer built-in electrical insulation.Sleeve design becomes thin diameter, for weight reduction designs.
The utility model has the advantages that:, thereby optimized the distribution of internal electric field because the inner chamber of housing is taked the version similar with the profile of secondary winding; Because sleeve design becomes the version of thin diameter, thereby has alleviated overall weight, has improved wind resistance; Because the conical surface length of bucking electrode is compared with existing current transformer and is rised appreciably, thereby has improved shield effectiveness; Because base flange is provided with several sealing rings, thereby has improved sealing property; 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 the thin diameter sleeve pipe of the utility model sulfur hexafluoride current mutual inductor;
Accompanying drawing 2 is structural representations of thin diameter sleeve pipe sulfur hexafluoride current mutual inductor housing parts;
Accompanying drawing 3 is structural representations of the base flange part of thin diameter sleeve pipe sulfur hexafluoride current mutual inductor;
Accompanying drawing 4 is structural representations of the fairlead blank area of thin diameter sleeve pipe sulfur hexafluoride current mutual inductor.
Embodiment
With reference to accompanying drawing 1, accompanying drawing 2, accompanying drawing 3, accompanying drawing 4, thin diameter sleeve pipe sulfur hexafluoride current mutual inductor of the present utility model comprises housing 1, primary conductive bar 2, secondary winding 3, sleeve pipe 4, bucking electrode 5, secondary lead wires pipe 6, base flange 7, secondary connection terminal 8, upper flange 9, fairlead joint 10, on sleeve pipe 4, be connected with upper flange 9, on upper flange 9, be fixed with housing 1, in housing 1 inner chamber, be provided with secondary winding 3, primary conductive bar 2 passes inner shield, secondary winding 3 is stretched out housing 1 and is constituted current transformer, and the inner chamber of described housing 1 is the version similar with the profile of secondary winding 3.In the inner chamber of sleeve pipe 4, be provided with the secondary lead wires pipe 6 that links to each other with secondary winding 3, secondary lead wires pipe 6 is connected with secondary winding 3 by fairlead joint 10, described fairlead joint 10 is made up of fairlead plinth 101, fairlead sealing ring 102, and fairlead sealing ring 102 is arranged in the inner chamber groove of fairlead plinth 101.Described sleeve pipe 4 is thin diameter sleeve pipe, and sleeve pipe 4 is meant that for thin diameter sleeve pipe its endoporus is the wound form fiberglass full skirt sleeve pipe of Φ 280mm～Φ 320mm, and present embodiment sleeve pipe 4 diameter of bores are Φ 300mm.The periphery of secondary lead wires pipe 6 is provided with bucking electrode 5 in the inner chamber of sleeve pipe 4, and described bucking electrode 5 its conical surface length l are the length of 0.5～0.7 secondary lead wires pipe 6L, and present embodiment 1 is 0.6L.Secondary lead wires pipe 6 links to each other with secondary winding 3, be provided with base flange 7 in the lower end of sleeve pipe 4, described base flange 7 is made up of flange seal circle 71, flange 72, end face seal 73, on flange 72, be provided with the groove that several is used for device flange sealing ring 71, on flange 72, be provided with the groove that is used for device end face seal 73.On base flange 7, be provided with secondary connection terminal 8.
Claims (6)
1, thin diameter sleeve pipe sulfur hexafluoride current mutual inductor, comprise housing (1), primary conductive bar (2), secondary winding (3), sleeve pipe (4), bucking electrode (5), secondary lead wires pipe (6), base flange (7), secondary connection terminal (8), upper flange (9), fairlead joint (10), on sleeve pipe (4), be connected with upper flange (9), on upper flange (9), be fixed with housing (1), in housing (1) inner chamber, be provided with secondary winding (3), primary conductive bar (2) passes inner shield, secondary winding (3) is stretched out housing (1) and is constituted current transformer, in the inner chamber of sleeve pipe (4), be provided with the secondary lead wires pipe (6) that links to each other with secondary winding (3), secondary lead wires pipe (6) is connected with secondary winding (3) by fairlead joint (10), it is characterized in that: described sleeve pipe (4) is thin diameter sleeve pipe; The periphery of secondary lead wires pipe (6) is provided with bucking electrode (5) in the inner chamber of sleeve pipe (4); Secondary lead wires pipe (6) links to each other with secondary winding (3), is provided with base flange (7) in the lower end of sleeve pipe (4); On base flange (7), be provided with secondary connection terminal (8).
2, thin diameter sleeve pipe sulfur hexafluoride current mutual inductor according to claim 1 is characterized in that: the inner chamber of described housing (1) for the similar version of profile of secondary winding (3).
3, thin diameter sleeve pipe sulfur hexafluoride current mutual inductor according to claim 1, it is characterized in that: described sleeve pipe (4) is meant that for thin diameter sleeve pipe its endoporus is the wound form fiberglass full skirt sleeve pipe of Φ 280mm～Φ 320mm.
4, thin diameter sleeve pipe sulfur hexafluoride current mutual inductor according to claim 1 is characterized in that: its conical surface length l of described bucking electrode (5) is the length of 0.5～0.7 secondary lead wires pipe (6) L.
5, thin diameter sleeve pipe sulfur hexafluoride current mutual inductor according to claim 1, it is characterized in that: described base flange (7) is made up of flange seal circle (71), flange (72), end face seal (73), on flange (72), be provided with the groove that several is used for device flange sealing ring (71), on flange (72), be provided with the groove that is used for device end face seal (73).
6, thin diameter sleeve pipe sulfur hexafluoride current mutual inductor according to claim 1, it is characterized in that: described fairlead joint (10) is made up of fairlead plinth (101), fairlead sealing ring (102), and fairlead sealing ring (102) is arranged in the inner chamber groove of fairlead plinth (101).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200371980U CN201237973Y (en) | 2008-06-01 | 2008-06-01 | Sulfur hexafluoride current mutual inductor with small-diameter casing tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200371980U CN201237973Y (en) | 2008-06-01 | 2008-06-01 | Sulfur hexafluoride current mutual inductor with small-diameter casing tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201237973Y true CN201237973Y (en) | 2009-05-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200371980U Expired - Fee Related CN201237973Y (en) | 2008-06-01 | 2008-06-01 | Sulfur hexafluoride current mutual inductor with small-diameter casing tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201237973Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102005292A (en) * | 2010-10-18 | 2011-04-06 | 北京瑞奇恩电器设备有限公司 | Antirust open type current transformer |
| CN103680906A (en) * | 2013-12-13 | 2014-03-26 | 中国西电电气股份有限公司 | Insulation structure of extra-high-voltage open type transformer substation current transformer |
| CN107508224A (en) * | 2016-06-14 | 2017-12-22 | 沈阳和新套管有限公司 | The core body mucilage binding structure and method at gas-insulated end in a kind of direct-current wall bushing |
| CN113899936A (en) * | 2021-10-13 | 2022-01-07 | 中国电力科学研究院有限公司 | Electromagnetic current transformer |
-
2008
- 2008-06-01 CN CNU2008200371980U patent/CN201237973Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102005292A (en) * | 2010-10-18 | 2011-04-06 | 北京瑞奇恩电器设备有限公司 | Antirust open type current transformer |
| CN102005292B (en) * | 2010-10-18 | 2012-09-26 | 北京瑞奇恩互感器设备有限公司 | Antirust open type current transformer |
| CN103680906A (en) * | 2013-12-13 | 2014-03-26 | 中国西电电气股份有限公司 | Insulation structure of extra-high-voltage open type transformer substation current transformer |
| CN107508224A (en) * | 2016-06-14 | 2017-12-22 | 沈阳和新套管有限公司 | The core body mucilage binding structure and method at gas-insulated end in a kind of direct-current wall bushing |
| CN107508224B (en) * | 2016-06-14 | 2023-10-20 | 沈阳和新套管有限公司 | Core body gluing structure and method for gas insulation end in direct-current wall bushing |
| CN113899936A (en) * | 2021-10-13 | 2022-01-07 | 中国电力科学研究院有限公司 | Electromagnetic current transformer |
| CN113899936B (en) * | 2021-10-13 | 2024-05-03 | 中国电力科学研究院有限公司 | Electromagnetic current transformer |
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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: 20090513 Termination date: 20160601 |