CN105469967A - Medium-voltage outdoor open-close type current transformer - Google Patents
Medium-voltage outdoor open-close type current transformer Download PDFInfo
- Publication number
- CN105469967A CN105469967A CN201610006999.XA CN201610006999A CN105469967A CN 105469967 A CN105469967 A CN 105469967A CN 201610006999 A CN201610006999 A CN 201610006999A CN 105469967 A CN105469967 A CN 105469967A
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- China
- Prior art keywords
- frame
- iron core
- shaped
- plastic
- upper yoke
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/20—Instruments transformers
- H01F38/22—Instruments transformers for single phase ac
- H01F38/28—Current transformers
- H01F38/30—Constructions
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/02—Casings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
- H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
- H01F27/263—Fastening parts of the core together
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2823—Wires
- H01F27/2828—Construction of conductive connections, of leads
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2895—Windings disposed upon ring cores
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
- H01F27/306—Fastening or mounting coils or windings on core, casing or other support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/20—Instruments transformers
- H01F38/22—Instruments transformers for single phase ac
- H01F38/28—Current transformers
- H01F38/30—Constructions
- H01F2038/305—Constructions with toroidal magnetic core
Abstract
A medium-voltage outdoor open-close type current transformer is disclosed. The current transformer comprises a winding, an upper iron yoke plastic frame and a lower half-frame-shaped iron core plastic shell; an upper iron yoke is correspondingly arranged in the upper iron yoke plastic frame; a half-frame-shaped iron core is correspondingly arranged in the lower half-frame-shaped iron core plastic shell; the upper iron yoke plastic frame is hinged with one side of the lower half-frame-shaped iron core plastic shell; the upper iron yoke plastic frame is connected with the other side of the lower half-frame-shaped iron core plastic shell through a rapid open-close connecting apparatus; an elastic sheet is integrally arranged at the bottom of an inner cavity in the upper iron yoke plastic frame; the elastic sheet supports the upper iron yoke of the half-frame-shaped iron core; and when the upper iron yoke plastic frame and the lower half-frame-shaped iron core plastic shell are buckled, the elastic sheet can enable the upper iron yoke and the iron core to be tightly fitted. The medium-voltage outdoor open-close type current transformer is good in insulation and dampproof performance, and extremely easy to install, detach and maintain; the tight fit of the iron core groups is ensured by the elastic sheet; the measurement precision is improved; and in addition, the current transformer is quite simple and convenient to install, capable of greatly reducing the installation time and improving efficiency and safety performance, and good in electricity-stealing-prevention performance.
Description
Technical field
The invention belongs to electric device, particularly a kind of open-close type Outdoor Current Transformer.
Background technology
Middle pressure Outdoor Current Transformer adopts poured with epoxy resin to form usually, has good insulation property and humidity resistance, secondary line wiring end band lead sealing plastic jacket.Due in order to keep high accuracy, usual annular core is not folding, when causing installing, must be first enclosed within busbar by instrument transformer, then installs busbar and connect, otherwise instrument transformer cannot be installed.Meanwhile, when instrument transformer needs to change, also must pull down busbar, after changing instrument transformer, reinstall busbar again, cause changing the chronic of needs, and waste of material be very large, wastes time and energy.Therefore the middle pressure Outdoor Current Transformer of poured with epoxy resin also has employing retractable structure.Open-close type product is divided into two, and usually adopts anchor ear to be fixed together by product.This anchor ear connected mode can owing to tightening degree difference, and whether interface aligns and affect properties of product; In addition, after repeatedly installing, anchor ear screw can be caused to lose efficacy and product cannot normally be run.Owing to pressing Outdoor Current Transformer that epoxy resin must be used to carry out sealing in outdoor open-close type, production difficulty is large, complex process, and environmental protection and recyclable degree extreme difference.Press Outdoor Current Transformer secondary terminals binding post to connect in outdoor open-close type, also will increase anti-electricity-theft cover, install complicated, also there is the risk of second short circuit.
Because outdoor products requires good sealing property; Outdoor Current Transformer is pressed not protect due to interface in the open-close type of shell-type; can because water inlet for Outdoor Current Transformer; be easy to get rusty and cause Product Precision decline even to be scrapped; so shell-type open-close type current transformer can not be used for open air.Namely be used in indoor, also often because humidity causes problem of rustiness; And after two of open-close type current transformer iron cores fastenings, often occur that laminating is tight, affect mutual inductor measuring accuracy of measurement, therefore retractable structure is pressed in Outdoor Current Transformer and can not be used in shell-type.In addition, middle pressure Outdoor Current Transformer adopts terminal deriving structure, its anti-electricity-theft poor performance.
Summary of the invention
The present invention be directed to the shortcoming of above-mentioned existence, a kind of middle pressure Outdoor Current Transformer of shell-type is provided, adopt open-close type, it has good insulation property and humidity resistance, dismounting, install extremely convenient, its iron core section coincide intact, certainty of measurement is high, and has anti-stealing electricity function.
The technical scheme that the technical problem that the present invention solves adopts is:
Outdoor open-close type current transformer is pressed in one, it is characterized in that comprising winding 12, upper yoke plastic frame 1 and second shaped as frame iron core 4 plastic casing 2, in upper yoke plastic frame 1, correspondence is provided with upper yoke 3, in second shaped as frame iron core 4 plastic casing 2, correspondence is provided with half shaped as frame iron core 4, above-mentioned winding 12 is around on half shaped as frame iron core 4, upper yoke plastic frame 1 and second shaped as frame iron core 4 plastic casing 2 side are hinged, upper yoke plastic frame 1 is connected by quickly opening and closing jockey with the opposite side of second shaped as frame iron core 4 plastic casing 2, the surrounding of the joint between upper yoke plastic frame 1 and second shaped as frame iron core 4 plastic casing 2 is provided with seal 11, intracavity bottom on upper yoke plastic frame 1 is integrally formed with shell fragment 8, shell fragment 8 withstands on the upper yoke 3 of half shaped as frame iron core 4, when upper yoke plastic frame 1 and second shaped as frame iron core 4 plastic casing 2 fasten, above-mentioned shell fragment 8 can make upper yoke 3 and iron core fit tightly, and above-mentioned seal 11 ensures to seal between upper yoke plastic frame 1 and second shaped as frame iron core 4 plastic casing 2, plastic casing 2 place of second shaped as frame iron core 4 is provided with wire hole, and the output of winding 12 is directly drawn through the wire hole of second shaped as frame iron core 4 plastic casing 2 by lead-in wire 9, and lead-in wire 9 and wire hole place are provided with sealing ring 10.
The surrounding of the joint between upper yoke plastic frame and second shaped as frame iron core plastic casing is provided with seal, lead-in wire and wire hole place are provided with sealing ring, ensure that its integrally-built sealing, there is good insulation property and humidity resistance, outdoor occasion can be applied in, the output of winding is directly drawn through instrument transformer housing by drawing, namely ensure that the sealing property of product, solve again the risk problem of second short circuit, simultaneously, install and use very easy, ensure that its anti-electricity-theft performance.Upper yoke does not have winding in addition, therefore top and the bottom do not need connecting line, ensure that the sealing of product, intracavity bottom in addition on upper yoke plastic frame is integrally formed with shell fragment, shell fragment can make half shaped as frame iron core in upper and lower mutual inductor plastic housing and upper yoke fit tightly, iron core section coincide intact, and iron core closes complete, improves certainty of measurement.Shell fragment and iron yoke plastic frame integrative-structure, when it makes, shell fragment and iron yoke plastic frame one-body molded, cost is low, and there will not be offset phenomena, installs very convenient, be not easy lost efficacy.
During concrete enforcement, quickly opening and closing jockey comprises hasp 5 and projection 6, hasp 5 comprises iron hoop 52 and buckle 51, iron hoop 52 and buckle 51 are hinged, projection 6 is located on upper yoke plastic frame 1, buckle 51 and second shaped as frame iron core 4 plastic casing 2 are hinged, and when upper yoke plastic frame 1 and second shaped as frame iron core 4 plastic casing 2 fasten, buckle 51 can drive iron hoop 52 to be pressed into projection 6.During use, as long as lift buckle, iron hoop is thrown off from projection, and instrument transformer just can be opened, and is enclosed within by instrument transformer on cable, again closes, buckle drive iron hoop press-in projection, buckle strain, with regard to installation, dismounting, install extremely convenient.The technical program structure, both ensure that iron core section coincide intact, again very easily in installation, dismounting and maintenance, was a kind of very easy mounting means, can greatly reduces the set-up time, raise the efficiency and security performance.
During concrete enforcement, upper yoke plastic frame 1 and second shaped as frame iron core 4 plastic casing 2 close by left-right parts mould and form, and ultrasonic bonding is used in mould conjunction place 13.The present invention adopts air insulation mode, moulds shell matched moulds conjunction place ultrasonic bonding, is that product and external environment reliably completely cut off, effectively ensure that the useful life of product, and simple to operate, recyclable degree is high.
During concrete enforcement, shell fragment 8 is integrally located at the both sides of the intracavity bottom on upper yoke plastic frame 1, the curved structure of shell fragment 8.
The invention has the beneficial effects as follows: technical solution of the present invention structure, it has good insulation property and humidity resistance, very easily in installation, dismounting and maintenance, shell fragment ensure that iron core group fits tightly, improve certainty of measurement, mounting means is very easy, greatly can reduce the set-up time, raise the efficiency and security performance, there is good anti-electricity-theft performance.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, invention is further illustrated.
Fig. 1 is embodiment of the present invention contour structures schematic diagram.
Fig. 2 is the internal structure schematic diagram of the embodiment of the present invention.
Fig. 3 is embodiment of the present invention closure state side-looking structural representation.
Fig. 4 is embodiment of the present invention upper yoke plastic frame structural representation.
Fig. 5 is embodiment of the present invention upper yoke plastic frame sectional structure schematic diagram.
Fig. 6 is embodiment of the present invention hasp structure schematic diagram.
Fig. 7 is embodiment of the present invention seal configuration schematic diagram.
Fig. 8 is embodiment of the present invention ring structure schematic diagram.
In figure: 1, upper yoke plastic frame 2, plastic casing 3, upper yoke 4, half shaped as frame iron core 5, hasp 6, projection 7, rotating shaft 8, shell fragment 9, lead-in wire 10, sealing ring 11, seal 12, winding 13, mould conjunction place 51, buckle 52, iron hoop.
Embodiment
In Fig. 1 to Fig. 8, outdoor open-close type current transformer is pressed in one, it is characterized in that comprising winding 12, upper yoke plastic frame 1 and second shaped as frame iron core 4 plastic casing 2, upper yoke plastic frame 1 and second shaped as frame iron core 4 plastic casing 2 close by left-right parts mould and form, and ultrasonic bonding is used in mould conjunction place 13.In upper yoke plastic frame 1, correspondence is provided with upper yoke 3, in second shaped as frame iron core 4 plastic casing 2, correspondence is provided with half shaped as frame iron core 4, winding 12 is around on half shaped as frame iron core 4, upper yoke plastic frame 1 and second shaped as frame iron core 4 plastic casing 2 side are hinged by rotating shaft 7, upper yoke plastic frame 1 is connected by quickly opening and closing jockey with the opposite side of second shaped as frame iron core 4 plastic casing 2, quickly opening and closing jockey comprises hasp 5 and projection 6, hasp 5 comprises iron hoop 52 and buckle 51, iron hoop 52 and buckle 51 are hinged, projection 6 is located on upper yoke plastic frame 1, buckle 51 and second shaped as frame iron core 4 plastic casing 2 are hinged, when upper yoke plastic frame 1 and second shaped as frame iron core 4 plastic casing 2 fasten, buckle 51 can drive iron hoop 52 to be pressed into projection 6.The surrounding of the joint between upper yoke plastic frame 1 and second shaped as frame iron core 4 plastic casing 2 is provided with seal 11, intracavity bottom on upper yoke plastic frame 1 is integrally formed with shell fragment 8, shell fragment 8 is integrally located at the both sides of the intracavity bottom on upper yoke plastic frame 1, the curved structure of shell fragment 8, shell fragment 8 withstands on the upper yoke 3 of half shaped as frame iron core 4; When upper yoke plastic frame 1 and second shaped as frame iron core 4 plastic casing 2 fasten, shell fragment 8 can make upper yoke 3 and iron core fit tightly, and above-mentioned seal 11 ensures to seal between upper yoke plastic frame 1 and second shaped as frame iron core 4 plastic casing 2; Second shaped as frame iron core 4 plastic casing 2 place is provided with wire hole, and the output of winding 12 is directly drawn through the wire hole of second shaped as frame iron core 4 plastic casing 2 by lead-in wire 9, and lead-in wire 9 and wire hole place are provided with sealing ring 10.
During use, as long as lift buckle 51, iron hoop 52 from projection 6 throw off, instrument transformer just can be opened, and is enclosed within by instrument transformer on cable, again closes, and buckle 51 drives iron hoop 52 to be pressed into projection 6, and buckle 51 is strained, with regard to installation, dismounting, installation extremely convenient.The surrounding of the joint between upper yoke plastic frame 1 and second shaped as frame iron core 4 plastic casing 2 is provided with seal 11, lead-in wire 9 and wire hole place are provided with sealing ring 10, ensure that its integrally-built sealing, there is good insulation property and humidity resistance, outdoor occasion can be applied in, the output of winding 12 is directly drawn through instrument transformer housing by lead-in wire 9, namely ensure that the sealing property of product, solve again the risk problem of second short circuit, simultaneously, install and use very easy, ensure that its anti-electricity-theft performance.Upper yoke 3 does not have winding 12 in addition, therefore top and the bottom do not need connecting line, ensure that the sealing of product, intracavity bottom in addition on upper yoke plastic frame 1 is integrally formed with shell fragment 8, shell fragment 8 can make half shaped as frame iron core 4 in upper and lower mutual inductor plastic housing 2 and upper yoke 3 fit tightly, iron core section coincide intact, and iron core closes complete, improves certainty of measurement.Shell fragment 8 and iron yoke plastic frame 1 integrative-structure, when it makes, shell fragment 8 is one-body molded with iron yoke plastic frame 1, and cost is low, and there will not be offset phenomena, installs very convenient, is not easy to lose efficacy.The present invention adopts air insulation mode, moulds shell matched moulds conjunction place 13 ultrasonic bonding, is that product and external environment reliably completely cut off, effectively ensure that the useful life of product.
Claims (4)
1. press outdoor open-close type current transformer in one kind, it is characterized in that comprising winding (12), upper yoke plastic frame (1) and second shaped as frame iron core (4) plastic casing (2), upper yoke plastic frame (1) interior correspondence is provided with upper yoke (3), plastic casing (2) the interior correspondence of second shaped as frame iron core (4) is provided with half shaped as frame iron core (4), above-mentioned winding (12) is around on half shaped as frame iron core (4), upper yoke plastic frame (1) and second shaped as frame iron core (4) plastic casing (2) side are hinged, upper yoke plastic frame (1) is connected by quickly opening and closing jockey with the opposite side of second shaped as frame iron core (4) plastic casing (2), the surrounding of the joint between upper yoke plastic frame (1) and second shaped as frame iron core (4) plastic casing (2) is provided with seal (11), intracavity bottom on upper yoke plastic frame (1) is integrally formed with shell fragment (8), shell fragment (8) withstands on the upper yoke (3) of half shaped as frame iron core (4), when the plastic casing (2) of upper yoke plastic frame (1) and second shaped as frame iron core (4) fastens, above-mentioned shell fragment (8) can make upper yoke (3) and iron core fit tightly, and above-mentioned seal (11) ensures sealing between upper yoke plastic frame (1) and second shaped as frame iron core (4) plastic casing (2), second shaped as frame iron core (4) plastic casing (2) place is provided with wire hole, the output of winding (12) is directly drawn through plastic casing (2) wire hole of second shaped as frame iron core (4) by lead-in wire (9), and lead-in wire (9) and wire hole place are provided with sealing ring (10).
2. press outdoor open-close type current transformer in one according to claim 1, it is characterized in that quickly opening and closing jockey comprises hasp (5) and projection (6), hasp (5) comprises iron hoop (52) and buckle (51), iron hoop (52) and buckle (51) are hinged, projection (6) is located on upper yoke plastic frame (1), buckle (51) and second shaped as frame iron core (4) plastic casing (2) are hinged, when upper yoke plastic frame (1) and second shaped as frame iron core (4) plastic casing (2) fasten, buckle (51) can drive iron hoop (52) to be pressed into projection (6).
3. press outdoor open-close type current transformer in one according to claim 1 and 2, it is characterized in that upper yoke plastic frame (1) and second shaped as frame iron core (4) plastic casing (2) close by left-right parts mould and form, ultrasonic bonding is used in mould conjunction place (13).
4. press outdoor open-close type current transformer in one according to claim 1 and 2, it is characterized in that shell fragment (8) is integrally located at the both sides of the intracavity bottom on upper yoke plastic frame (1), shell fragment (8) curved structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610006999.XA CN105469967B (en) | 2016-01-06 | 2016-01-06 | Outdoor open-close type current transformer is pressed in one kind |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610006999.XA CN105469967B (en) | 2016-01-06 | 2016-01-06 | Outdoor open-close type current transformer is pressed in one kind |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105469967A true CN105469967A (en) | 2016-04-06 |
| CN105469967B CN105469967B (en) | 2018-01-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610006999.XA Active CN105469967B (en) | 2016-01-06 | 2016-01-06 | Outdoor open-close type current transformer is pressed in one kind |
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| Country | Link |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106373737A (en) * | 2016-10-14 | 2017-02-01 | 无锡市海升电子科技有限公司 | Conveniently used iron core |
| CN108172386A (en) * | 2018-03-06 | 2018-06-15 | 浙江天际互感器有限公司 | A kind of Open Type Electric Current Mutual Inductor of outdoor desirable voltage signal |
| CN108987082A (en) * | 2018-06-28 | 2018-12-11 | 江阴市星火电子科技有限公司 | A kind of open-close type current transformer and its assembly method equipped with electro-magnetic screen layer |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2924329Y (en) * | 2006-07-19 | 2007-07-18 | 陈建华 | Lighter |
| CN101447328A (en) * | 2008-09-12 | 2009-06-03 | 郑元豹 | Open-close type current transformer |
| CN203433984U (en) * | 2013-08-09 | 2014-02-12 | 江山市三江互感器省级高新技术研究开发中心 | Split type current transformer |
| CN204315380U (en) * | 2014-12-02 | 2015-05-06 | 广东电网有限责任公司东莞供电局 | A kind of open-close type current transformer |
| CN205319019U (en) * | 2016-01-06 | 2016-06-15 | 浙江天际互感器有限公司 | Outdoor split type current transformer of middling pressure |
-
2016
- 2016-01-06 CN CN201610006999.XA patent/CN105469967B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2924329Y (en) * | 2006-07-19 | 2007-07-18 | 陈建华 | Lighter |
| CN101447328A (en) * | 2008-09-12 | 2009-06-03 | 郑元豹 | Open-close type current transformer |
| CN203433984U (en) * | 2013-08-09 | 2014-02-12 | 江山市三江互感器省级高新技术研究开发中心 | Split type current transformer |
| CN204315380U (en) * | 2014-12-02 | 2015-05-06 | 广东电网有限责任公司东莞供电局 | A kind of open-close type current transformer |
| CN205319019U (en) * | 2016-01-06 | 2016-06-15 | 浙江天际互感器有限公司 | Outdoor split type current transformer of middling pressure |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106373737A (en) * | 2016-10-14 | 2017-02-01 | 无锡市海升电子科技有限公司 | Conveniently used iron core |
| CN106373737B (en) * | 2016-10-14 | 2018-03-09 | 嵊州市仲明新材料科技有限公司 | A kind of iron core of convenient use |
| CN108172386A (en) * | 2018-03-06 | 2018-06-15 | 浙江天际互感器有限公司 | A kind of Open Type Electric Current Mutual Inductor of outdoor desirable voltage signal |
| CN108987082A (en) * | 2018-06-28 | 2018-12-11 | 江阴市星火电子科技有限公司 | A kind of open-close type current transformer and its assembly method equipped with electro-magnetic screen layer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105469967B (en) | 2018-01-16 |
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Address after: No. 8, Jingtian Road, Jiangshan Economic Development Zone, Jiangshan City, Quzhou City, Zhejiang Province 324102 Patentee after: Zhejiang Tianji Instrument Transformer Co.,Ltd. Address before: No. 2, Shanhai Road, Shanhai Cooperation Zone, Jiangshan Economic Development Zone, Quzhou City, Zhejiang Province, 324123 Patentee before: ZHEJIANG HORIZON INSTRUMENT TRANSFORMERS Co.,Ltd. |