CN204155743U - A kind of novel current transformer - Google Patents
A kind of novel current transformer Download PDFInfo
- Publication number
- CN204155743U CN204155743U CN201420457278.7U CN201420457278U CN204155743U CN 204155743 U CN204155743 U CN 204155743U CN 201420457278 U CN201420457278 U CN 201420457278U CN 204155743 U CN204155743 U CN 204155743U
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- insulation crust
- iron core
- grab
- current transformer
- core
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Abstract
The utility model discloses a kind of novel current transformer, aiming to provide a kind of syndeton by improving iron core, realizing the compact siro spinning technology of iron core, ensure the effectively stable of iron core magnetic flux, improve hermetically-sealed construction and the syndeton of insulation crust, realize the totally-enclosed connection of shell, avoid the problem occurring partial discharge, thus the effective novel current transformer of the function-stable of assurance device, its drip irrigation device is a kind of novel current transformer, comprise square core and insulation crust, square core is arranged in insulation crust, square core is provided with secondary winding, be wound with between the square core of secondary winding and insulation crust and be filled with insulating protective layer, square core comprises the first iron core and the second iron core, first iron core and the second iron core are provided with the syndeton cooperatively interacted, insulation crust comprises the first insulation crust and the second insulation crust, first insulation crust and the second insulation crust are provided with the hermetically-sealed construction and interface arrangment that cooperatively interact.
Description
Technical field
The utility model relates to a kind of electric power system high-tension measurement and protective device, and more particularly, it relates to a kind of novel current transformer.
Background technology
Instrument transformer is also called instrument transformer; it is the general designation of current transformer and voltage transformer; high voltage can be become low-voltage, big current becomes small area analysis; for measuring or protection system; high voltage or big current scaling transformation are mainly become normal low voltage (100V) or standard small area analysis (5A or 1A by its function; all refer to rated value); to realize the standardization of measuring instrument, proterctive equipment and automatic control equipment, miniaturization; instrument transformer also can be used to separate high-voltage system simultaneously, to ensure the safety of the person and equipment.
The structure of current transformer is comparatively simple, be made up of winding, secondary winding, iron core and a framework, housing, binding post etc. of mutually insulated, its operation principle and transformer are substantially identical, according to electromagnetic induction principle work, transformer conversion being voltage and current transformer conversion be electric current, winding N1 connects tested electric current, is called a winding (or former limit winding, armature winding); Winding N2 connects measuring instrument, be called secondary winding (or vice-side winding, secondary winding), the number of turn N1 of a winding is less, is directly series in power circuit, when a load current is by a winding, the alternating flux induction of generation produces the secondary current reduced in proportion; The number of turn N2 of secondary winding is more, connect with the secondary load of the current coils such as instrument, relay, transmitter and form closed-loop path, due to one time, winding has equal ampere-turn with secondary winding, I1N1=I2N2, in current transformer rated transformation ratio current transformer actual motion, load impedance is very little, secondary winding, close to short-circuit condition, is equivalent to the transformer of a short circuit operation.
Current transformer of the prior art in use, a tested wire is generally needed to block and could install, installing/dismounting is very inconvenient, though or utilize a kind of straight-through current transformer not need tested cable to block and could install, but must closely cooperate with cable installation process when installing, namely installing cables must carry out with installation instrument transformer simultaneously, otherwise, instrument transformer cannot installation in position, and installing/dismounting is very inconvenient.
At present, the application number on market be 201220366663.1 Chinese patent disclose a kind of current transformer, include square core, comprise the first iron core and the second iron core; Secondary winding, comprises the first secondary winding and the second secondary winding, and described first secondary winding comprises two the first secondary connection ends, and described first secondary winding is wound on described first iron core; Described second secondary winding comprises two the second secondary connection ends, and described second secondary winding is wound on described second iron core; First secondary connection end described in any one is connected with the second secondary connection end described in any one; Insulating protective layer, comprises the first insulating protective layer and the second insulating protective layer; Wherein, described square core and described secondary winding are all cast in described insulating protective layer.
Although the beneficial effects of the utility model are installed simply, easy to maintenance, the small form factor requirements of user can be met, precision and capacity can be ensured again, solve existing current transformer installing/dismounting inconvenient, increase the problem of difficulty of construction and construction volume, but the current transformer of this detachable is being installed and used in process, first iron core directly contacts connection with the second iron core, easily there is loose contact, cause iron core magnetic flux unstable, affect current transformer functional stabilization, the flame-resistant insulation shell of current transformer utilizes hold-down screw to connect, easily occur in connection procedure connecting gap, the hermetically sealed effect of flame-resistant insulation shell cannot be ensured, there will be partial discharges fault, cause current transformer disabler.
Utility model content
For the deficiency that prior art exists, the purpose of this utility model is that providing a kind of improves the first iron core and the second iron core connected mode, realizes the closely stable of iron core connection, is reached through the effectively stable of iron core magnetic flux; Improve the connected mode of the first insulation crust and the second insulation crust, realize the totally-enclosed of insulation crust connection, avoid partial discharge occurs, simplify simultaneously and connect difficulty, thus the effective novel current transformer of assurance device function-stable.
For achieving the above object, the utility model provides following technical scheme: a kind of novel current transformer, comprise square core and insulation crust, described square core is arranged in insulation crust, described square core is wound with secondary winding, described being wound with between the square core of secondary winding and described insulation crust is filled with insulating protective layer, it is characterized in that: described square core comprises the first iron core and second iron core corresponding with described first iron core, described first iron core and described second iron core are provided with the syndeton of mutual corresponding matching, described insulation crust comprises the first insulation crust and second insulation crust corresponding with the first insulation crust, described first insulation crust and described second insulation crust are provided with hermetically-sealed construction and the interface arrangment of mutual corresponding matching.
By adopting technique scheme, first iron core and second iron core corresponding with the first iron core are provided with the syndeton cooperatively interacted, syndeton is utilized to ensure that the compactness that iron core connects, there will not be the problem of contact area deficiency and loose contact, thus realize producing on iron core stablizing effective magnetic flux, make current transformer stable, the hermetically-sealed construction and interface arrangment that cooperatively interact are set on the first insulation crust and the second insulation crust corresponding with the first insulation crust simultaneously, hermetically-sealed construction is utilized to ensure that the insulated enclosure that insulation crust connects, interface arrangment is utilized to ensure that the insulated enclosure that insulation crust connects and efficient and convenient property, realizing current transformer will cause the problem of partial discharge to produce because of occurring connecting gap, thus ensure that current transformer is stable.
The utility model is set to further: described syndeton comprises lug boss and concave part, described first iron core is provided with the first lug boss with the one end of the link that described second iron core is connected, the other end is provided with the first concave part, the one end of the link that described second iron core is connected with described first iron core is provided with the second concave part with described first lug boss corresponding matching, the other end is provided with the second lug boss with described first concave part corresponding matching, described first lug boss and the second lug boss are set to triangular hill structure, described first concave part and the second concave part are set to triangular groove structure.
By adopting technique scheme, syndeton is set to lug boss and the concave part with lug boss corresponding matching, comprise the first lug boss on link one end of the first iron core, the first concave part on the other end, with on link one end of the second iron core with the second concave part of the first raised portion fits, the second lug boss that the other end coordinates with the first concave part, first lug boss and the second lug boss are set to triangular hill structure simultaneously, first concave part and the second concave part are set to triangular groove structure, thus achieve when iron core connects and can fully contact, to lead the convenient and swift property be connected with utilizing triangle, ensure the compactness that iron core connects, make the magnetic field flux of generation effectively stable, make current transformer stable.
The utility model is set to further: described hermetically-sealed construction comprises boss portion and pocket, described first insulation crust is provided with the first boss portion with the one end of the link that described second insulation crust is connected, the other end is provided with the first pocket, the one end of the link that described second insulation crust is connected with described first insulation crust is provided with the second pocket with described first boss portion corresponding matching, the other end is provided with the second boss portion with described first pocket corresponding matching, described first boss portion and described second lug boss are provided with electro-insulating rubber sealing strip.
By adopting technique scheme, hermetically-sealed construction is set to boss portion and the pocket with boss portion corresponding matching, comprise the first boss portion on first insulation crust link one end, the first pocket on the other end, with the second pocket that second insulation crust link one end coordinates with the first boss portion, the second boss portion that the other end coordinates with the first pocket, in the first boss portion and the second lug boss, be provided with electro-insulating rubber sealing strip simultaneously, thus ensure that the insulated enclosure that insulation crust connects, there will not be partial discharge, thus ensure that current transformer is stable.
The utility model is set to further: described interface arrangment comprises grab group and grab groove group, described first boss portion is provided with the first grab group, described first pocket is provided with the first grab groove group, described second pocket is provided with the second grab groove group with described first grab group corresponding matching, described second boss portion is provided with the second grab group with described first grab groove group corresponding matching, the grab in described grab group is set to the Split type structure of the adjustable interval size be made up of the first grab and the second grab.
By adopting technique scheme, interface arrangment is set to grab group and the grab groove group with grab group corresponding matching, comprise the first grab group on the first boss portion connecting end surface, the first grab groove group on first pocket connecting end surface, on second pocket connecting end surface with the second grab groove group of the first grab group corresponding matching, with the second grab group of the first grab groove group corresponding matching on second boss portion connecting end surface, grab simultaneously in grab group is set to the Split type structure of the adjustable interval size be made up of the first grab and the second grab, ensure that the insulated enclosure that insulation crust connects and efficient and convenient property, there will not be partial discharge, thus ensure that current transformer is stable.
Accompanying drawing explanation
Fig. 1 is the schematic appearance of a kind of novel current transformer of the utility model;
Fig. 2 is the cross-sectional schematic of a kind of novel current transformer of the utility model;
Fig. 3 is the partial enlarged drawing at A place in Fig. 2;
Fig. 4 is the internal structure schematic diagram of a kind of novel current transformer of the utility model.
Reference numeral: 1, square core; 1.1, the first iron core; 1.2, the second iron core; 2, insulation crust; 2.1, the first insulation crust; 2.2, the second insulation crust; 3, secondary winding; 4, insulating protective layer; 4.1, the first insulating protective layer; 4.2, the second insulating protective layer; 5, lug boss; 5.1, the first lug boss; 5.2, the second lug boss; 6, concave part; 6.1, the first concave part; 6.2, the second concave part; 7, boss portion; 7.1 first boss portion; 7.2, the second boss portion; 8, pocket; 8.1, the first pocket; 8.2, the second pocket; 9, electro-insulating rubber sealing strip; 10, grab group; 10.1, the first grab group; 10.2, the second grab group; 11, grab groove group; 11.1, the first grab groove group; 11.2, the second grab groove group; 12, the first grab; 13, the second grab.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in detail.
Referring to figs. 1 through Fig. 4, the embodiment of a kind of novel current transformer of the utility model is described further.
A kind of novel current transformer, comprise square core 1 and insulation crust 2, square core 1 is arranged in insulation crust 2, square core 1 is wound with secondary winding 3, be wound with between the square core 1 of secondary winding 3 and insulation crust 2 and be filled with insulating protective layer 4, wherein, square core 1 comprises the first iron core 1.1 and second iron core 1.2 corresponding with the first iron core 1.1, first iron core 1.1 and the second iron core 1.2 are provided with the syndeton of mutual corresponding matching, insulation crust 2 comprises the first insulation crust 2.1 and second insulation crust 2.2 corresponding with the first insulation crust 2.1, first insulation crust 2.1 and the second insulation crust 2.2 are provided with hermetically-sealed construction and the interface arrangment of mutual corresponding matching, insulating protective layer 4 comprises the first insulating protective layer 4.1 be filled between the first iron core 1.1 and the first insulation crust 2.1 and the second insulating protective layer 4.2 be filled between the second iron core 1.2 and the second insulation crust 2.2.
Syndeton comprises lug boss 5 and concave part 6, the one end of the link that first iron core 1.1 is connected with the second iron core 1.2 is provided with the first lug boss 5.1, the other end is provided with the first concave part 6.1, the one end of the link that second iron core 1.2 is connected with the first iron core 1.1 is provided with the second concave part 6.2 with the first lug boss 5.1 corresponding matching, the other end is provided with the second lug boss 5.2 with the first concave part 6.1 corresponding matching, first lug boss 5.1 and the second lug boss 5.2 are set to triangular hill structure, first concave part 6.1 and the second concave part 6.2 are set to triangular groove structure, hermetically-sealed construction comprises boss portion 7 and pocket 8, the one end of the link that first insulation crust 2.1 is connected with the second insulation crust 2.2 is provided with the first boss portion 7.1, the other end is provided with the first pocket 8.1, the one end of the link that second insulation crust 2.2 is connected with the first insulation crust 2.1 is provided with the second pocket 8.2 with the first boss portion 7.1 corresponding matching, the other end is provided with the second boss portion 7.2 with the first pocket 8.1 corresponding matching, first boss portion 7.1 and the second lug boss 7.2 are provided with electro-insulating rubber sealing strip 9, interface arrangment comprises grab group 10 and grab groove group 11, first boss portion 7.1 is provided with the first grab group 10.1, first pocket 8.1 is provided with the first grab groove group 11.1, second pocket 8.2 is provided with the second grab groove group 11.2 with the first grab group 10.1 corresponding matching, second boss portion 7.2 is provided with the second grab group 10.2 stating the first grab groove group 11.1 corresponding matching, grab in grab group 10 is set to the Split type structure of the adjustable interval size be made up of the first grab 12 and the second grab 13.
In specific embodiment, first iron core 1.1 and second iron core 1.2 corresponding with the first iron core 1.1 are provided with the syndeton cooperatively interacted, syndeton is utilized to ensure that the compactness that square core 1 connects, there will not be the problem of contact area deficiency and loose contact, thus realize producing on square core 1 stablizing effective magnetic field flux, make current transformer stable, the hermetically-sealed construction and interface arrangment that cooperatively interact are set on the first insulation crust 2.1 and the second insulation crust 2.2 corresponding with the first insulation crust 2.1 simultaneously, hermetically-sealed construction is utilized to ensure that the insulated enclosure that insulation crust 2 connects, interface arrangment is utilized to ensure that the insulated enclosure that insulation crust 2 connects and efficient and convenient property, realizing current transformer will cause the problem of partial discharge to produce because of occurring connecting gap, thus ensure that current transformer is stable, syndeton is set to lug boss 5 and the concave part 6 with lug boss 5 corresponding matching, comprise the first lug boss 5.1 on link one end of the first iron core 1.1, the first concave part 6.1 on the other end, with the second concave part 6.2 that link one end of the second iron core 1.2 coordinates with the first lug boss 5.1, the second lug boss 5.2 that the other end coordinates with the first concave part 6.1, first lug boss 5.1 and the second lug boss 5.2 are set to triangular hill structure simultaneously, first concave part 6.1 and the second concave part 6.2 are set to triangular groove structure, thus achieve when square core 1 connects and can fully contact, to lead the convenient and swift property be connected with utilizing triangle, ensure the compactness that square core 1 connects, make the magnetic field flux of generation effectively stable, make current transformer stable, hermetically-sealed construction is set to boss portion 7 and the pocket 8 with boss portion 7 corresponding matching, comprise the first boss portion 7.1 on first insulation crust 4.1 link one end, the first pocket 8.1 on the other end, with the second pocket 8.2 that second insulation crust 4.2 link one end coordinates with the first boss portion 7.1, the second boss portion 7.2 that the other end coordinates with the first pocket 8.1, in the first boss portion 7.1 and the second lug boss 7.2, be provided with electro-insulating rubber sealing strip 9 simultaneously, thus ensure that the insulated enclosure that insulation crust 4 connects, there will not be partial discharge, thus ensure that current transformer is stable, interface arrangment is set to grab group 10 and the grab groove group 11 with grab group 10 corresponding matching, comprise the first grab group 10.1 on the first boss portion 7.1 connecting end surface, the first grab groove group 11.1 on first pocket 8.1 connecting end surface, on second pocket 8.2 connecting end surface with the second grab groove group 11.2 of the first grab group 10.1 corresponding matching, with the second grab group 10.2 of the first grab groove group 11.1 corresponding matching on second boss portion 7.2 connecting end surface, grab simultaneously in grab group 10 is set to the Split type structure of the adjustable interval size be made up of the first grab 12 and the second grab 13, ensure that the insulated enclosure that insulation crust 4 connects and efficient and convenient property, there will not be partial discharge, thus ensure that current transformer is stable.
The above is only preferred implementation of the present utility model, protection range of the present utility model be not only confined to above-described embodiment, and all technical schemes belonged under the utility model thinking all belong to protection range of the present utility model.It should be pointed out that for those skilled in the art, do not departing from the some improvements and modifications under the utility model principle prerequisite, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (7)
1. a novel current transformer, comprise square core and insulation crust, described square core is arranged in insulation crust, described square core is wound with secondary winding, described being wound with between the square core of secondary winding and described insulation crust is filled with insulating protective layer, it is characterized in that: described square core comprises the first iron core and second iron core corresponding with described first iron core, described first iron core and described second iron core are provided with the syndeton of mutual corresponding matching, described insulation crust comprises the first insulation crust and second insulation crust corresponding with the first insulation crust, described first insulation crust and described second insulation crust are provided with hermetically-sealed construction and the interface arrangment of mutual corresponding matching.
2. novel current transformer according to claim 1, it is characterized in that: described syndeton comprises lug boss and concave part, described first iron core is provided with the first lug boss with the one end of the link that described second iron core is connected, the other end is provided with the first concave part, the one end of the link that described second iron core is connected with described first iron core is provided with the second concave part with described first lug boss corresponding matching, and the other end is provided with the second lug boss with described first concave part corresponding matching.
3. novel current transformer according to claim 2, is characterized in that: described first lug boss and the second lug boss are set to triangular hill structure, and described first concave part and the second concave part are set to triangular groove structure.
4. novel current transformer according to claim 1, it is characterized in that: described hermetically-sealed construction comprises boss portion and pocket, described first insulation crust is provided with the first boss portion with the one end of the link that described second insulation crust is connected, the other end is provided with the first pocket, the one end of the link that described second insulation crust is connected with described first insulation crust is provided with the second pocket with described first boss portion corresponding matching, and the other end is provided with the second boss portion with described first pocket corresponding matching.
5. novel current transformer according to claim 4, is characterized in that: described first boss portion and described second lug boss are provided with electro-insulating rubber sealing strip.
6. novel current transformer according to claim 5, it is characterized in that: described interface arrangment comprises grab group and grab groove group, described first boss portion is provided with the first grab group, described first pocket is provided with the first grab groove group, described second pocket is provided with the second grab groove group with described first grab group corresponding matching, described second boss portion is provided with the second grab group with described first grab groove group corresponding matching.
7. novel current transformer according to claim 6, is characterized in that: the grab in described grab group is set to the Split type structure of the adjustable interval size be made up of the first grab and the second grab.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420457278.7U CN204155743U (en) | 2014-08-13 | 2014-08-13 | A kind of novel current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420457278.7U CN204155743U (en) | 2014-08-13 | 2014-08-13 | A kind of novel current transformer |
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| Publication Number | Publication Date |
|---|---|
| CN204155743U true CN204155743U (en) | 2015-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420457278.7U Expired - Fee Related CN204155743U (en) | 2014-08-13 | 2014-08-13 | A kind of novel current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204155743U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107408451A (en) * | 2015-03-04 | 2017-11-28 | Ntn株式会社 | Inductance element resin-case and inductance element |
| CN109378165A (en) * | 2018-12-13 | 2019-02-22 | 上海康比利仪表有限公司 | A kind of transformer housing structure |
-
2014
- 2014-08-13 CN CN201420457278.7U patent/CN204155743U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107408451A (en) * | 2015-03-04 | 2017-11-28 | Ntn株式会社 | Inductance element resin-case and inductance element |
| US10586643B2 (en) | 2015-03-04 | 2020-03-10 | Ntn Corporation | Inductance element resin case and inductance element |
| CN107408451B (en) * | 2015-03-04 | 2021-02-02 | Ntn株式会社 | Resin case for inductance element and inductance element |
| CN109378165A (en) * | 2018-12-13 | 2019-02-22 | 上海康比利仪表有限公司 | A kind of transformer housing structure |
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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: 20150211 Termination date: 20150813 |
|
| EXPY | Termination of patent right or utility model |