CN101388284A - Current mutual inductor for GIS - Google Patents
Current mutual inductor for GIS Download PDFInfo
- Publication number
- CN101388284A CN101388284A CNA2008101502813A CN200810150281A CN101388284A CN 101388284 A CN101388284 A CN 101388284A CN A2008101502813 A CNA2008101502813 A CN A2008101502813A CN 200810150281 A CN200810150281 A CN 200810150281A CN 101388284 A CN101388284 A CN 101388284A
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- inner shield
- gis
- coil
- shield tube
- upper flange
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Abstract
The invention discloses a current transformer for a GIS, belonging to the field of high voltage apparatuses, which comprises an internal shield cylinder and a coil which is sleeved on the internal shield cylinder, and is characterized by further comprising an upper flange, wherein the upper flange is hermetically connected with the upper end of the shield cylinder, and the upper end of the shield cylinder is provided with ring-shaped convex edges, a semi-circular fastening element in an L-shape cross section is arranged on the lower portion of the convex edges, and the semi-circular fastening element is connected with the upper flange, a ring-shape tray is arranged on the lower end of the internal shield cylinder, and is used to bear the coil, and insulating resin is poured between the coil and the outer walls of the internal shield cylinder.
Description
Technical field
The present invention relates to the High-Voltage Electrical Appliances field, particularly a kind of GIS Current Transformer.
Background technology
GIS (insulated metal sealing switch equipment) adopts the gas isolated High-Voltage Electrical Appliances of SF6, pure SF6 gas has the best arc extinguishing and insulation property, and stable performance, but its insulation property often are subjected to the influence of electrically conductive particles and water content, and insulation property and arc extinction performance are descended.Electrically conductive particles moves under electric field action, and they are arranged in electric field and puncture voltage is reduced; Moisture can form condensation on the insulating part surface, it is unfavorable that insulation property are brought, can have influence on simultaneously the stability of SF6 gas, when moisture more for a long time, hydrolysis just may take place and produces hydrofluoric acid in SF6 gas more than 200 ℃, has very strong corrosivity, hydrolysate makes the arc extinction performance of SF6 gas descend simultaneously, so in the gas isolated High-Voltage Electrical Appliances of SF6, need be to the water content and the strict control of electrically conductive particles of SF6 gas, to improve the operational reliability of high voltage electric appliance.
The GIS Current Transformer is one of vitals of GIS electrical equipment.Usually whole parts of current transformer are assemblied in the GIS SF6 air chamber, and the cleannes of parts and moisture effects SF6 gas performance have increased the uncertain factor of security of operation.
Summary of the invention
Order of the present invention is to provide a kind of GIS Current Transformer, and it can reduce the assembling amount of parts of SF6 air chamber in the GIS, farthest reduces parts cleannes and moisture to SF6 gas-insulated performance, improves the security performance of GIS electrical equipment.
In order to achieve the above object, of the present inventionly be achieved by the following technical solutions: a kind of GIS Current Transformer comprises the inner shield tube, be sleeved on the coil on the inner shield tube, it is characterized in that, also comprise upper flange, described upper flange and inner shield tube upper end are tightly connected.
Characteristics of the present invention also are:
Described inner shield tube upper end has the convex annular edge, and the below, convex edge is provided with the semi-ring securing member that the cross section is the L type, and described semi-ring securing member is fixedlyed connected with upper flange.
Described inner shield tube lower end has annular pallet, and pallet carrying coil is cast with insulating resin between coil and the inner shield drum outer wall.
Because the present invention is tightly connected inner shield tube upper end with upper flange, the parts of current transformer place outside the SF6 air chamber of GIS electrical equipment, reduce the assembling amount of parts of SF6 air chamber, farthest reduce cleannes and moisture to SF6 gas-insulated Effect on Performance, improved the safety in operation of GIS electrical equipment on the one hand, on the other hand, the production requirement of GIS Current Transformer is significantly lowered.
Description of drawings
Below in conjunction with description of drawings and embodiment the present invention is further illustrated.
Fig. 1 is a 220KV GIS Current Transformer assembly structure schematic diagram; Wherein: 1 is upper flange, and 2 is shielding cylinder, and 3 is the semi-ring securing member, and 4 is shell, and 5 is insulating resin, and 6 is coil, and 7 is terminal box, and 8 is the GIS conductor.
Embodiment
With reference to Fig. 1, the upper end of inner shield tube 2 has the convex annular edge, and the lower end has annular pallet, and coil 6 is sleeved on the inner shield tube 2, and the annular pallet carrying by the lower end is cast with insulating resin 5 between coil 6 and inner shield tube 1 outer wall, and is combined into one.Present embodiment with all coils 6 suits after, carry out integrated poured with inner shield tube 2 outer walls then.
After coil 6 and inner shield tube 1 assembled, adopting the cross section that is arranged on below, inner shield tube 2 convex edges was the semi-ring securing member 3 of L type, is connected with upper flange 1 bolt, is provided with Gask-O-Seal between inner shield tube 2 convex edge upper surfaces and the upper flange 1.Shell 4 is welded between the outer of upper flange 1 outer and described inner shield tube 1 annular pallet, and coil 6 is wrapped in wherein, and the arranged outside of shell 4 has the terminal box 7 of coil 6.
When the assembling of the present invention and GIS electrical equipment was used, GIS conductor 8 passed inner shield tube 2 and upper flange 1, and the annular pallet of inner shield tube 2 and upper flange 1 are tightly connected with the SF6 air chamber of GIS electrical equipment respectively, are full of SF6 gas in the inner shield tube 2, and the GIS conductor is insulated.The parts that do not have current transformer in the whole SF6 air chamber, therefore, the cleannes of current transformer parts and moisture can not influence the insulation property of SF6 gas, have improved the safety in operation of GIS electrical equipment; On the other hand, the production requirement of GIS Current Transformer is significantly lowered, and production technology is simplified, and production cost reduces.
Claims (3)
1, a kind of GIS Current Transformer comprises the inner shield tube, is sleeved on the coil on the inner shield tube, it is characterized in that, also comprises upper flange, and described upper flange and inner shield tube upper end are tightly connected.
2, a kind of GIS Current Transformer according to claim 1 is characterized in that, described inner shield tube upper end has the convex annular edge, and the below, convex edge is provided with the semi-ring securing member that the cross section is the L type, and described semi-ring securing member is fixedlyed connected with upper flange.
3, a kind of GIS Current Transformer according to claim 1 is characterized in that, described inner shield tube lower end has annular pallet, and pallet carrying coil is cast with insulating resin between coil and the inner shield drum outer wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101502813A CN101388284A (en) | 2008-07-08 | 2008-07-08 | Current mutual inductor for GIS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101502813A CN101388284A (en) | 2008-07-08 | 2008-07-08 | Current mutual inductor for GIS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101388284A true CN101388284A (en) | 2009-03-18 |
Family
ID=40477627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008101502813A Pending CN101388284A (en) | 2008-07-08 | 2008-07-08 | Current mutual inductor for GIS |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101388284A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102013643A (en) * | 2010-11-18 | 2011-04-13 | 江苏省电力设计院 | 220kvGIS power distribution device |
| CN102033175A (en) * | 2010-10-22 | 2011-04-27 | 河南省电力公司平顶山供电公司 | Insulated obturator for measuring electromagnetic potential transformer |
| CN104360129A (en) * | 2014-11-05 | 2015-02-18 | 中国西电电气股份有限公司 | Electromagnetic current transformer body structure with internal support |
| CN106057405A (en) * | 2016-05-12 | 2016-10-26 | 宿迁市通用机械有限公司 | High-voltage transformer housing |
| CN107248448A (en) * | 2017-06-19 | 2017-10-13 | 河南平高电气股份有限公司 | A kind of GIS external current mutual inductors and GIS device |
| CN108369859A (en) * | 2015-12-18 | 2018-08-03 | Abb瑞士股份有限公司 | Current transformer for high pressure gas insulated switching installation substation |
-
2008
- 2008-07-08 CN CNA2008101502813A patent/CN101388284A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102033175A (en) * | 2010-10-22 | 2011-04-27 | 河南省电力公司平顶山供电公司 | Insulated obturator for measuring electromagnetic potential transformer |
| CN102033175B (en) * | 2010-10-22 | 2014-03-19 | 国家电网公司 | Insulated obturator for measuring electromagnetic potential transformer |
| CN102013643A (en) * | 2010-11-18 | 2011-04-13 | 江苏省电力设计院 | 220kvGIS power distribution device |
| CN104360129A (en) * | 2014-11-05 | 2015-02-18 | 中国西电电气股份有限公司 | Electromagnetic current transformer body structure with internal support |
| CN108369859A (en) * | 2015-12-18 | 2018-08-03 | Abb瑞士股份有限公司 | Current transformer for high pressure gas insulated switching installation substation |
| CN106057405A (en) * | 2016-05-12 | 2016-10-26 | 宿迁市通用机械有限公司 | High-voltage transformer housing |
| CN107248448A (en) * | 2017-06-19 | 2017-10-13 | 河南平高电气股份有限公司 | A kind of GIS external current mutual inductors and GIS device |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090318 |