CN209625979U - A kind of modular current transformer - Google Patents
A kind of modular current transformer Download PDFInfo
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- CN209625979U CN209625979U CN201920833952.XU CN201920833952U CN209625979U CN 209625979 U CN209625979 U CN 209625979U CN 201920833952 U CN201920833952 U CN 201920833952U CN 209625979 U CN209625979 U CN 209625979U
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- current transformer
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- guide rail
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Abstract
The utility model discloses a kind of modular current transformers, including multiple unit pieces；Each unit piece includes shell, magnetic core, coil and electrode, and electrode includes anode and cathode；Coil is wound on magnetic core, and one end of coil connects anode, and the other end connects cathode；Multiple unit piece head and the tail connections are circlewise；Wherein to be detachably connected between shell, respectively connected between magnetic core, between positive interpolar and cathode；And wherein there is the positive and negative electrode connector for leading in a unit piece and being separately connected with positive and negative electrode.The current transformer of the utility model uses unit piece form, detachable between each unit part, contact connectio, it is parallel form between coil, make its entire length and shape can arbitrarily change but no-load voltage ratio is constant, it is adaptable and meet the stable code requirement of no-load voltage ratio, in addition, coils from parallel connection of coils also reduces the problem of inconsistency in coil manufacturing process, testing result is more stable.
Description
Technical field
The utility model relates to electromagnetic technology fields, more particularly to a kind of modular current transformer.
Background technique
Current transformer is used to cover the current signal extracted in cable on cable.If the electric current of cable is 1A, electric current is mutual
Coil on sensor magnetic core is 2000 circles, and the electric current that current transformer detects is 0.5mA, and extracting current signal has simplicity
Quick feature.
Conventional current transformer, generally integral type closed loop configuration, in use, need to cut off cable, it could be by electric current
Mutual inductor is put on, cumbersome and need to power off.In view of the foregoing drawbacks, the first patent of applicant, Authorization Notice No. are
CN2691026Y discloses a kind of counter plug type high precision current mutual inductor, consists of two parts, relative to conventional current mutual inductance
Device uses mutual-inserting type structure, in use, directly opening current transformer without cutting off cable, being put on, had
Using the small advantage of relatively convenient, leakage field, but its there is also following defects:
1, for the cable of different thicknesses, it is also necessary to the current transformer of different size.
2, for having rigidity that can not change the copper bar (general more be arranged side by side) of shape, above-mentioned current transformer due to
Structure type is fixed, and without form-dependent character, can not directly be put on, be limited its use.
3, since coil can have inconsistency in the fabrication process, so the detection data that will lead to certain coils is unstable
It is fixed.
It can be seen that above-mentioned existing current transformer is in structure and use, it is clear that there are still there is inconvenient and defect, and
It needs to be further improved.How adaptable, leakage field small, detection data stable Current Mutual Inductance of a kind of new is founded
Device becomes current industry and needs improved target.
Utility model content
The technical problem to be solved by the present invention is to provide a kind of current transformer, adapting it to property is strong, leakage field is small and
Detection data is stablized.
In order to solve the above technical problems, the utility model adopts the following technical solution:
A kind of modular current transformer includes multiple unit pieces；Each unit piece includes shell and is mounted on shell
Interior magnetic core, coil and electrode, the electrode include anode and cathode；The coil is wound on magnetic core, and one end of coil connects
Anode is connect, the other end connects cathode；
The multiple unit piece head and the tail connection is circlewise；Wherein, to be detachably connected between the shell of each unit part, magnetic core
Between, be respectively to connect between positive interpolar and cathode；And wherein has to lead in a unit piece and be separately connected with positive and negative electrode
Positive and negative electrode connector.
It is further improved as the utility model, the magnetic core is formed by sheet core material is cross-superimposed, two after superposition
The shape at end is interdigitation, plug connection between the magnetic core.
Further, one end of the sheet core material is linear, and the other end is semicircular structure, adjacent sheet core material
It reversely shifts to install, semicircular structure distal process goes out.
Further, the coil of each unit piece is 2000 circles.
Further, guide rail form, the positive guide rail between each unit part is respectively adopted in the positive electrode and negative electrode of the unit piece
Between and cathode guide rail between be respectively grafting form.
Further, one end of positive guide rail is double lamellar structures in the unit piece, is distinguished in double lamellar structures
It is provided with card slot or card hole；The lamellar structure side of the other end of the anode guide rail is provided with detent protrusion；It is described to be provided with
In the double lamellar structures for the positive guide rail that the lamellar structure of detent protrusion is used to be inserted into adjacent cells part, and by detent protrusion and
Card slot or card hole connection；The structure of the cathode guide rail is the same as positive guide rail structure.
Further, the shell includes upper cover and bottom case, is respectively arranged with positioning outside the two sides of described bottom case one end
Protrusion；Locating groove, side opening on the locating groove, the upper cover are respectively arranged in the two sides of the bottom case other end
It is mounted on bottom case, and the upper cover is also connected with flip lid close to the position of locating groove open side, the flip lid can be with bottom case
It fastens.
Further, the positioning protrusion periphery is circle, and the locating groove is U-shaped structure.
Further, the shell end with positioning protrusion and locating groove on the bottom case is semicircular structure.
Further, the current transformer includes 3 or more unit pieces.
By adopting such a design, the utility model at least has the following advantages:
1, the detachable chain structure formed using multiple unit pieces, length and shape can arbitrarily change, applicable
In the cable of various thicknesses and the copper bar of rigidity.
2, using form in parallel between the coil of each unit part, it is ensured that no-load voltage ratio is constant, meets the stable specification of no-load voltage ratio
It is required that；Simultaneously between multiple coils can automatic average, reduce the problem of inconsistency of coil manufacturing process coil, overall wire
Circle is stablized, and testing result is stablized.
3, each unit part interface uses crossbar architectures, and whole leakage field is small, and testing result is stablized.
Detailed description of the invention
Above-mentioned is only the general introduction of technical solutions of the utility model, in order to better understand the technology hand of the utility model
Section, below in conjunction with attached drawing, the utility model is described in further detail with specific embodiment.
Fig. 1 is the unit piece structural schematic diagram of the current transformer in the utility model embodiment；
Fig. 2 is the unit piece configuration schematic diagram of the current transformer in the utility model embodiment；
Fig. 3 is two unit piece connection schematic diagrams of the current transformer in the utility model embodiment；
Fig. 4 is the current transformer structure schematic diagram of multiple connectors formation in the utility model embodiment (without outer
Shell)；
Fig. 5 is that the current transformer structure schematic diagram that multiple connectors in the utility model embodiment are formed (has outer
Shell)；
Fig. 6 is the schematic diagram of current transformer in the utility model embodiment.
Specific embodiment
The overall technology thinking of the utility model is to take the structure type of multiple unit piece head and the tail connections, each unit part
Interior coils from parallel connection of coils keeps whole variable resistance constant, describes in detail below by specific embodiment.
It as shown in Figure 1, 2, is the structural schematic diagram of the unit piece of modular current transformer；Unit piece includes shell 1, outside
Magnetic core 2, coil 3 and electrode 4 are provided in shell 1；Its coil 3 is wound on magnetic core 2, is required according to no-load voltage ratio, in each unit
It is 2000/1 around the coil of corresponding number, such as no-load voltage ratio on the magnetic core 2 of part, then the coil on the magnetic core 2 of each unit piece is 2000
Circle；Electrode 4 divides for anode 41 and cathode 42, one end connection anode 41 of coil 3, other end connection cathode 42.
Connection from beginning to end is formed cyclic annular between multiple said units parts, the thickness or need of the cable that can be detected according to actual needs
The shape for the copper bar to be detected adjusts cricoid size and shape, and such as in certain embodiments, which can be 3 units
Part is formed by connecting, and in certain embodiments, which can be the unit piece connection of 4,5,6,7,8,9,10 etc. different joint numbers.
With reference to Figure 3, it shown in 4,5, when head and the tail connect, is detachably connected between the shell 1 of adjacent unit piece, it is adjacent
Unit piece magnetic core 2 and magnetic core 2 between to connect, be contact connectio between the anode 41 of adjacent unit piece and anode 41,
It is also contact connectio between the cathode 42 and cathode 42 of adjacent unit piece；Cooperation is refering to what is shown in Fig. 6, pass through above-mentioned each unit part
Between connection, indeed achieve the parallel connection of the coil of each unit piece, can be in the above-mentioned of some unit piece after in parallel
Positive and negative electrode connector (not shown) is drawn on anode 41 and cathode 42.
In the above-described embodiments, anode 41 is all made of the form of guide rail with cathode 42, certainly in certain embodiments, above-mentioned
Anode 41 can also be using the form of other conducting wires or the form of conductor with cathode 42, it is only necessary to guarantee in each unit piece
There is the contact jaw of electrode in connecting pin, when being connected with each other, it is ensured that is connected with each other between anode 41, mutually interconnects between cathode 42
It connects.
In certain some embodiment, as preferred mode, cooperate shown in Fig. 3, above-mentioned magnetic core 2 is intersected by sheet core material 21
It is formed by stacking, the shape after superposition at both ends is interdigitation；The design of interdigitation is, it can be achieved that the magnetic core piece of adjacent cells part
Close grafting.In order to guarantee can mutually to rotate between adjacent unit piece, meet cricoid demand, as a preferred option, piece
One end of shape core material 21 is linear, and the other end is semicircular structure, by taking a magnetic core is assembled by 20 sheet core materials as an example,
In have the one end of 10 semicircular structures towards unit piece, in addition 10 semicircular structures towards unit piece the other end,
Back span shifts to install, and combines later half circular configuration distal process and goes out, and linear end retracts, and is arranged by above structure, semicircle
Structure end can be achieved to relatively rotate function, adjust the interior angle of two adjacent unit pieces can as needed.
In certain embodiments, for the connection between the positive guide rail 41 of adjacent cells part and the company between cathode guide rail 42
It connects, can be cooperated shown in Fig. 2 by the way of grafting, by taking the connection of positive guide rail 41 as an example, the one of preferably positive guide rail 41
Holding (first end) is double lamellar structures, is respectively arranged with card slot or card hole 412 in double lamellar structures；The other end of positive guide rail 41
The lamellar structure side of (second end) is provided with detent protrusion 411；In unit piece connection, cooperate shown in Fig. 3, first unit
The lamellar structure of the second end of the positive guide rail 41 of part is inserted into the biplate layer of the first end of the positive guide rail 41 of second unit piece
In structure, corresponding detent protrusion 411 is connected together with card slot or card hole；The structure type of cathode guide rail 42 is led with above-mentioned anode
The structure type of rail 41.
The shell mechanism of said units part can self-setting according to demand, but in view of easy to assembly, in some embodiments
In, as preferred mode, cooperating shown in Fig. 2, shell 1 includes upper cover 12 and bottom case 11, and the two of 11 one end of bottom case (first end)
Positioning protrusion 111 is respectively arranged with outside side；Locating groove is respectively arranged in the two sides of 11 other end of bottom case (second end)
112, side opening on locating groove 112, magnetic core 2, coil 3 and electrode 4 are placed in bottom case 11, and upper cover 12 is mounted on bottom case 11
On.When the connection of two unit pieces, the positioning protrusion 111 of the first end of the bottom case 11 of first unit can be installed from top to bottom to the
In the locating groove 112 of the second end of two unit pieces, while the connection in order to guarantee the two, it can be in upper cover 12 close to positioning card
The position of channel opening side is connected with flip lid (not shown), and flip lid can be fastened with bottom case 11, and preferably flip lid buckles into locating groove
In 112 upper side opening.For the purposes of guaranteeing mutually rotate between adjacent unit piece, meet cricoid demand, as excellent
The scheme of choosing, above-mentioned 111 periphery of positioning protrusion are circle, and locating groove 112 is U-shaped structure, in addition have positioning on bottom case 11
Protrusion 111 and the shell end (first end, second end) of locating groove 112 are semicircular structure.
When specifically used, directly according to cable thickness or copper bar shape need, appropriate number of unit piece is selected to carry out
Assembling, makes its head and the tail be interconnected to form cricoid chain structure, and the coil of such as a certain unit piece goes wrong, will not shadow
Ring the normal work of other unit pieces.
The current transformer of the utility model uses the form of unit piece, detachable between each unit part, connect, respectively
It is parallel form between the coil of unit piece, the length and shape of unit piece can arbitrarily change, various complex environments are applicable to,
Meets the demand of the needs of different cable size sizes and copper bar of different shapes.Due to being used simultaneously between the coil of each unit part
The form of connection, it is ensured that no-load voltage ratio is constant, meets the stable code requirement of no-load voltage ratio；Simultaneously between multiple coils can automatic average, drop
The low problem of inconsistency of coil manufacturing process coil, whole coil are stablized, and testing result is stablized.In addition, each unit part
Interface uses crossbar architectures, and whole leakage field is small, and testing result is stablized.
The above descriptions are merely preferred embodiments of the present invention, not makees in any form to the utility model
Limitation, those skilled in the art make a little simple modification, equivalent variations or modification using the technology contents of the disclosure above,
It falls within the protection scope of the present utility model.
Claims (10)
1. a kind of modular current transformer, it is characterised in that including multiple unit pieces；
Each unit piece includes shell and installation magnetic core, coil and electrode inside the shell, the electrode include anode and
Cathode；The coil is wound on magnetic core, and one end of coil connects anode, and the other end connects cathode；
The multiple unit piece head and the tail connection is circlewise；Wherein between the shell of each unit part to be detachably connected, between magnetic core, anode
Between and cathode between be respectively connect；And wherein have led in a unit piece be separately connected with positive and negative electrode it is positive and negative
Pole connector.
2. modular current transformer according to claim 1, it is characterised in that the magnetic core is intersected folded by sheet core material
Add, the shape after superposition at both ends is interdigitation, plug connection between the magnetic core.
3. modular current transformer according to claim 2, it is characterised in that one end of the sheet core material is straight line
Shape, the other end are semicircular structure, and adjacent sheet core material reversely shifts to install, and semicircular structure distal process goes out.
4. modular current transformer according to claim 1, it is characterised in that the coil of each unit piece is
2000 circles.
5. modular current transformer according to claim 1-4, it is characterised in that the anode of the unit piece
Guide rail form is respectively adopted with cathode, between the positive guide rail between each unit part and is respectively grafting form between cathode guide rail.
6. modular current transformer according to claim 5, it is characterised in that in the unit piece, the one of positive guide rail
End is double lamellar structures, is respectively arranged with card slot or card hole in double lamellar structures；The piece of the other end of the anode guide rail
Layer texture edge is provided with detent protrusion；The lamellar structure for being provided with detent protrusion is used to be inserted into the anode of adjacent cells part
In double lamellar structures of guide rail, and it is connect by detent protrusion with card slot or card hole；
The structure of the cathode guide rail is the same as positive guide rail structure.
7. modular current transformer according to claim 1-4, it is characterised in that the shell includes upper cover
And bottom case, positioning protrusion is respectively arranged with outside the two sides of described bottom case one end；In the two sides of the bottom case other end respectively
It is provided with locating groove, side opening on the locating groove, the upper cover is mounted on bottom case, and the upper cover is close to positioning card
The position of channel opening side is also connected with flip lid, and the flip lid can be fastened with bottom case.
8. modular current transformer according to claim 7, which is characterized in that the positioning protrusion periphery is circle,
The locating groove is U-shaped structure.
9. modular current transformer according to claim 7, which is characterized in that on the bottom case have positioning protrusion and
The shell end of locating groove is semicircular structure.
10. modular current transformer according to claim 1-4, which is characterized in that the current transformer
Including 3 or more unit pieces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920833952.XU CN209625979U (en) | 2019-06-04 | 2019-06-04 | A kind of modular current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920833952.XU CN209625979U (en) | 2019-06-04 | 2019-06-04 | A kind of modular current transformer |
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| Publication Number | Publication Date |
|---|---|
| CN209625979U true CN209625979U (en) | 2019-11-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920833952.XU Active CN209625979U (en) | 2019-06-04 | 2019-06-04 | A kind of modular current transformer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110085390A (en) * | 2019-06-04 | 2019-08-02 | 北京航天常兴科技发展股份有限公司 | A kind of modular current transformer |
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2019
- 2019-06-04 CN CN201920833952.XU patent/CN209625979U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110085390A (en) * | 2019-06-04 | 2019-08-02 | 北京航天常兴科技发展股份有限公司 | A kind of modular current transformer |
| WO2020244144A1 (en) * | 2019-06-04 | 2020-12-10 | 北京航天常兴科技发展股份有限公司 | Unit-type current transformer |
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