CN203659614U - Compact current transformer - Google Patents
Compact current transformer Download PDFInfo
- Publication number
- CN203659614U CN203659614U CN201320888182.1U CN201320888182U CN203659614U CN 203659614 U CN203659614 U CN 203659614U CN 201320888182 U CN201320888182 U CN 201320888182U CN 203659614 U CN203659614 U CN 203659614U
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- base
- outer cover
- housing
- coil
- flange
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- 238000004080 punching Methods 0.000 claims description 32
- 238000009413 insulation Methods 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 3
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 abstract 5
- 238000002955 isolation Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001808 coupling effect Effects 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 210000002615 epidermis Anatomy 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
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- Transformers For Measuring Instruments (AREA)
Abstract
A compact current transformer comprises a CT cross-core bus, a CT housing, a CT pedestal and a guide cover. The CT cross-core bus includes a CT cross-core bus casing. The upper side and the lower side of the CT cross-core bus casing are provided with a top flange and a bottom flange respectively, the diameter of the top flange being smaller than that of the bottom flange. The CT pedestal sleeves the CT cross-core bus casing and is fixedly connected on the bottom flange of the CT cross-core bus casing. The outside of the CT pedestal is connected with the CT housing. The upper side of the CT housing is connected with the guide cover. An enclosed CT oil space is formed between the CT housing and the CT pedestal. CT coils arranged in the CT coil space are connected with the bottom of the CT pedestal. The compact current transformer is used for a GIS/H-GIS. For compact arrangements of the GIS/H-GIS, each of all parts in a product needs to be considered, therefore, the external dimension is reduced to the maximum and the number of parts is minimized.
Description
Technical field
The utility model relates to a kind of GIS/H-GIS Current Transformer device.
Background technology
Along with the development of economic society, GIS/H-GIS(Cubicle Gas-Insulated Switchgear), maintenance period little with floor space is long, security reliability advantages of higher has obtained increasing application, particularly more extensive in the application of high pressure field (72.5kV and more than).
GIS/H-GIS equipment is compared with respect to AIS product in the past, has had very large change at the aspect such as overall dimension, floor space.But along with the day of land resource is becoming tight and pay attention to day by day to environmental protection, have higher requirement in the miniaturization to product design size and the aspect such as use amount that reduces parts, gas.
In order to guarantee power system security economical operation, must carry out monitoring and measuring to the ruuning situation of power equipment.But general measurement and protective device can not directly access high-tension apparatus No. one time; and the high voltage of primary system need to be become to low-voltage and little electric current with large current conversion; supplying with measuring instrument and protective device uses; carry out the equipment of these convert task, modal is exactly the instrument transformer that we say conventionally.Current transformer (CT) as a kind of traditional ruuning situation to electric power primary equipment protect, current measuring device, its structure is significant to overall product size and performance.
Utility model content
The purpose of this utility model is to provide a kind of compact conformation size little compact current transformer.
The technical solution of the utility model is:
A kind of compact current transformer, comprise CT punching bus, CT outer cover, CT base and kuppe, CT punching bus comprises CT punching bus housing, and the upper and lower sides of CT punching bus housing is respectively equipped with top flange and flange in the bottom, and the diameter of top flange is less than the diameter of flange in the bottom; CT base sheath is located at CT punching bus hull outside and is fixedly connected on the flange in the bottom of CT punching bus housing, the outside of CT base is connected with CT outer cover, the upside of CT outer cover is connected with kuppe, between CT outer cover and CT base, surround the CT coil space of sealing, in described CT coil space, be provided with CT coil; CT coil is connected with the bottom of CT base.
CT base comprises the cylinder of the base that is positioned at CT punching bus hull outside circumference, CT outer cover comprises that vertical housing parts and one are connected to the outer cover platform at housing parts top, the end of housing parts,, along being connected with the outer of CT base, is provided with insulation cushion between outer cover platform and cylinder of the base; Between CT base and CT punching bus housing, be provided with spacing; The position in the outer part of outer cover platform is lower to being connected with kuppe; Between the top flange of the top of kuppe and CT punching bus housing, being provided with insulation distinguishes.
Cylinder of the base is cylindric.
CT coil is connected on CT base by screw rod, is also connected with pressing plate on screw rod, and pressing plate is pressed against on CT coil.
The utility model is a kind of GIS/H-GIS compact current transformer device, arranges for the densification of realizing GIS/H-GIS, need consider the each parts in product, from reducing to greatest extent overall dimension, reduces amount of parts.The utility model possesses the features such as excellent water proofing property, reliability, economy, to product miniaturization, assembling practicality significant.
Beneficial effect:
1, the housing of CT punching bus is big or small flange-type design, can effectively reduce the internal diameter of CT coil, so just can guarantee, under the prerequisite that coil section is long-pending constant, to adopt less CT external diameter.Can reduce thus the use amount of material, and can reduce the overall height of equipment, also be convenient to CT punching bus and dock other equipment.2, CT coil can protect reliably by CT base and outer cover, and while preventing outdoor use, rainwater enters, and has guaranteed that CT coil can not be damaged.3, in addition, induced current can, by kuppe and the conducting of CT outer cover, divide isolation by insulation cushion, insulation layer between CT base and CT outer cover, can guarantee can not flow through induced current on the housing of CT bus, thereby affect CT certainty of measurement, guarantees the normal operation of CT.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation that adopts the punching bus housing of big or small flange;
Fig. 3 is waterproof construction schematic diagram;
Fig. 4 is the partial enlarged drawing A of Fig. 3;
Fig. 5 is induced current flow-guiding channel schematic diagram.
In figure, CT outer cover 1, CT base 2, kuppe 3, insulation cushion 4, CT coil 5, CT punching bus housing 6, pressing plate 7, insulation distinguishes 8, isolation earthing switch 9, circuit breaker 10, top flange 11, flange in the bottom 12, CT coil space 13, cylinder of the base 14, housing parts 15, outer cover platform 16, screw rod.
Embodiment
As shown in Figure 1, the utility model comprises CT punching bus, CT outer cover 1, CT base 2, kuppe 3, CT coil 5, and CT punching bus comprises CT punching bus housing 6.As shown in Figure 2, the upper and lower sides of CT punching bus housing 6 is respectively equipped with top flange 11 and flange in the bottom 12, and the diameter of top flange 11 is less than the diameter of flange in the bottom 12, and such CT coil 5 that is arranged so that is easy to just from the top down through going.
As shown in Figure 1, 2, assembling process of the present utility model:
1. CT base 2 is fixed on the flange in the bottom 12 of CT punching bus housing 6;
2. CT coil 5 is fastening by screw rod 17 from housing 6 top flange 11 penetrate successively according to main electrical scheme order, φ B > φ C > φ A in Fig. 1; Wherein, A is top flange 11 diameters, and B is flange in the bottom 12 diameters, and C is the internal diameter of CT coil 5;
3. insulation cushion 4 is stuck in to cylinder of the base 14 top edge of CT base 2 according to correct position;
4. CT outer cover 1 is rear fastening from the top flange 11 on CT punching bus 6 tops is overlapped;
5. kuppe 3 is installed, in the time of bolted, is used plain washer, guarantee that kuppe 3 is reliably connected with CT outer cover 1 and isolation earthing switch flange 9.
While use out of doors, if being subject to rainwater immersion, CT coil can cause fault.Therefore, as shown in Figure 3,4, on CT device, be provided with waterproof construction.In the time of rainwater weather, most of rainwater can directly flow down by passage a.If while running into strong wind and heavy rain weather, part rainwater exceeds the CT of the D portion outer cover 1 rainproof ring in inner side, or enters CT base 2 cylindrical shell inner sides by kuppe 3 docking ports, all can discharge from the flange notch of CT base 2 bottoms by passage b.
For 50HZ AC system, inevitably there is alternation coupling effect in GIS equipment, in the loop that therefore alternating current of major loop consists of at shell and support, earth connection (plate) electromagnetic induction, produces epidermis induced current.For guaranteeing on-site maintenance personnel's safety, need be by induced current by trusted path ground connection.
As shown in Figure 5, in the time that current transformer is normally worked, if induced current forms in CT coil section, through-flow (path b), will affect the certainty of measurement of CT device, causes serious consequence.
The utility model is provided with flow-guiding channel, the induced current producing on isolation earthing switch 9 housings is guided on CT outer cover 1 by CT kuppe 3, then by CT outer cover 1, electric current is guided on circuit breaker 10 housings, finally, by earthing device ground connection, seen the path c in Fig. 5.Because 8 setting is distinguished in insulation cushion 4 and insulation, in CT coil 5 inside not can and form path b, can guarantee the reliability service of CT device.
Claims (4)
1. a compact current transformer, it is characterized in that: comprise CT punching bus, CT outer cover, CT base and kuppe, CT punching bus comprises CT punching bus housing, the upper and lower sides of CT punching bus housing is respectively equipped with top flange and flange in the bottom, and the diameter of top flange is less than the diameter of flange in the bottom; CT base sheath is located at CT punching bus hull outside and is fixedly connected on the flange in the bottom of CT punching bus housing, the outside of CT base is connected with CT outer cover, the upside of CT outer cover is connected with kuppe, between CT outer cover and CT base, surround the CT coil space of sealing, in described CT coil space, be provided with CT coil; CT coil is connected with the bottom of CT base.
2. compact current transformer according to claim 1, it is characterized in that: CT base comprises the cylinder of the base that is positioned at CT punching bus hull outside circumference, CT outer cover comprises that vertical housing parts and one are connected to the outer cover platform at housing parts top, the end of housing parts,, along being connected with the outer of CT base, is provided with insulation cushion between outer cover platform and cylinder of the base; Between CT base and CT punching bus housing, be provided with spacing; The position in the outer part of outer cover platform is lower to being connected with kuppe; Between the top flange of the top of kuppe and CT punching bus housing, being provided with insulation distinguishes.
3. compact current transformer according to claim 2, is characterized in that: cylinder of the base is cylindric.
4. compact current transformer according to claim 1 and 2, is characterized in that: CT coil is connected on CT base by screw rod, is also connected with pressing plate on screw rod, and pressing plate is pressed against on CT coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320888182.1U CN203659614U (en) | 2013-12-31 | 2013-12-31 | Compact current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320888182.1U CN203659614U (en) | 2013-12-31 | 2013-12-31 | Compact current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203659614U true CN203659614U (en) | 2014-06-18 |
Family
ID=50925978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320888182.1U Expired - Lifetime CN203659614U (en) | 2013-12-31 | 2013-12-31 | Compact current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203659614U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104576007A (en) * | 2015-01-12 | 2015-04-29 | 广东电网有限责任公司电力科学研究院 | Flow-guide radiation combined transformer for high-voltage complete device |
| CN106328363A (en) * | 2015-06-30 | 2017-01-11 | 西门子公司 | External current transformer assembly and gas insulated switchgear with same |
| CN110911138A (en) * | 2018-09-14 | 2020-03-24 | 河南平芝高压开关有限公司 | Current transformer kuppe and GIS equipment |
| CN113871176A (en) * | 2021-08-25 | 2021-12-31 | 河南平高电气股份有限公司 | External current transformer and GIS |
-
2013
- 2013-12-31 CN CN201320888182.1U patent/CN203659614U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104576007A (en) * | 2015-01-12 | 2015-04-29 | 广东电网有限责任公司电力科学研究院 | Flow-guide radiation combined transformer for high-voltage complete device |
| CN106328363A (en) * | 2015-06-30 | 2017-01-11 | 西门子公司 | External current transformer assembly and gas insulated switchgear with same |
| CN110911138A (en) * | 2018-09-14 | 2020-03-24 | 河南平芝高压开关有限公司 | Current transformer kuppe and GIS equipment |
| CN113871176A (en) * | 2021-08-25 | 2021-12-31 | 河南平高电气股份有限公司 | External current transformer and GIS |
| CN113871176B (en) * | 2021-08-25 | 2024-04-05 | 河南平高电气股份有限公司 | External current transformer and GIS |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: HENAN PINGZHI HIGH VOLTAGE SWITCHGEAR CO., LTD. Free format text: FORMER NAME: HENAN PINGGAO TOSHIBA HIGH VOLTAGE SWITCHGEAR CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 467013 No. 645, east section, Jianshe Road, Henan, Pingdingshan Patentee after: HENAN PINGZHI HIGH VOLTAGE SWITCHGEAR Co.,Ltd. Address before: 467013 No. 645, east section, Jianshe Road, Henan, Pingdingshan Patentee before: HENAN PINGGAO TOSHIBA HIGH VOLTAGE SWITCHGEAR Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20140618 |
|
| CX01 | Expiry of patent term |