CN110085390A - A kind of modular current transformer - Google Patents
A kind of modular current transformer Download PDFInfo
- Publication number
- CN110085390A CN110085390A CN201910482244.0A CN201910482244A CN110085390A CN 110085390 A CN110085390 A CN 110085390A CN 201910482244 A CN201910482244 A CN 201910482244A CN 110085390 A CN110085390 A CN 110085390A
- Authority
- CN
- China
- Prior art keywords
- current transformer
- coil
- cathode
- guide rail
- unit piece
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000011162 core material Substances 0.000 claims description 30
- 238000000034 method Methods 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims 1
- 238000012360 testing method Methods 0.000 abstract description 5
- 230000008859 change Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- 229910052802 copper Inorganic materials 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- 230000008901 benefit Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000013475 authorization Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/0092—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring current only
-
- 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
- H01F27/04—Leading of conductors or axles through casings, e.g. for tap-changing arrangements
-
- 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
- H01F27/245—Magnetic cores made from sheets, e.g. grain-oriented
-
- 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
-
- 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
- H01F27/29—Terminals; Tapping arrangements for signal inductances
-
- 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
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/346—Preventing or reducing leakage fields
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Transformers For Measuring Instruments (AREA)
Abstract
The invention 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.Current transformer of the invention 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 present invention 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.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of current transformer, adapting it to property is strong, leakage field is small and detects
Data stabilization.
In order to solve the above technical problems, the present invention adopts the following technical scheme:
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, between magnetic core,
It is 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 present invention, the magnetic core is formed by sheet core material is cross-superimposed, at both ends after superposition
Shape 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, in the unit piece, one end of positive guide rail is double lamellar structures, 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 present invention has at least 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；Meanwhile between multiple coils can automatic average, reduce the problem of inconsistency of coil manufacturing process coil, it is whole
Coil 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 more stable.
Detailed description of the invention
The above is merely an overview of the technical solutions of the present invention, in order to better understand the technical means of the present invention, below
In conjunction with attached drawing, the present invention is described in further detail with specific embodiment.
Fig. 1 is the unit piece structural schematic diagram of the current transformer in the embodiment of the present invention；
Fig. 2 is the unit piece configuration schematic diagram of the current transformer in the embodiment of the present invention；
Fig. 3 is two unit piece connection schematic diagrams of the current transformer in the embodiment of the present invention；
Fig. 4 is the current transformer structure schematic diagram (non-housing) that multiple connectors in the embodiment of the present invention are formed；
Fig. 5 is the current transformer structure schematic diagram (having shell) that multiple connectors in the embodiment of the present invention are formed；
Fig. 6 is the schematic diagram of current transformer in the embodiment of the present invention.
Specific embodiment
Overall technology thinking of the invention is to take the structure type of multiple unit pieces head and the tail connections, in each unit part
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
Connection between part indeed achieves the parallel connection of the coil of each unit piece, can be in the upper of some unit piece after in parallel
It states and draws positive and negative electrode connector (not shown) 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, preferably positive guide rail 41
One end (first end) is double lamellar structures, is respectively arranged with card slot or card hole 412 in double lamellar structures；Positive guide rail 41 it is another
The lamellar structure side at end (second end) is provided with detent protrusion 411；In unit piece connection, cooperate shown in Fig. 3, first list
The lamellar structure of the second end of the positive guide rail 41 of element is inserted into the biplate of the first end of the positive guide rail 41 of second unit piece
In layer structure, corresponding detent protrusion 411 is connected together with card slot or card hole；The structure type of cathode guide rail 42 is the same as above-mentioned anode
The structure type of guide 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
On 11.When two unit piece connections, the positioning protrusion 111 of the first end of the bottom case 11 of first unit can be installed from top to bottom
Into the locating groove 112 of the second end of second unit piece, while the connection in order to guarantee the two, it can be in upper cover 12 close to fixed
The position of position card slot open side is connected with flip lid (not shown), and flip lid can be fastened with bottom case 11, and preferably flip lid buckles into positioning
In the upper side opening of card slot 112.For the purposes of guaranteeing mutually rotate between adjacent unit piece, meets cricoid demand, make
For preferred scheme, above-mentioned 111 periphery of positioning protrusion is circle, and locating groove 112 is U-shaped structure, is in addition had on bottom case 11
The shell end (first end, second end) of positioning protrusion 111 and locating groove 112 is 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.
Current transformer of the invention uses the form of unit piece, detachable, contact connectio between each unit part, each unit
It is parallel form between the coil of part, the length and shape of unit piece can arbitrarily change, and be applicable to various complex environments, meet
The demand of different cable size sizes and the demand of copper bar of different shapes.Due to using parallel connection between the coil of each unit part
Form, 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, reduce
The problem of inconsistency of coil manufacturing process coil, whole coil are stablized, and testing result is stablized.In addition each unit part interface is adopted
With crossbar architectures, whole leakage field is small, and testing result is stablized.
The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, this
Field technical staff makes a little simple modification, equivalent variations or modification using the technology contents of the disclosure above, all falls within this hair
In bright protection scope.
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, it is characterised in that the positioning protrusion periphery is circle, institute
Stating locating groove is U-shaped structure.
9. modular current transformer according to claim 7, it is characterised 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, it is characterised in that the current transformer packet
Include 3 or more unit pieces.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910482244.0A CN110085390A (en) | 2019-06-04 | 2019-06-04 | A kind of modular current transformer |
| PCT/CN2019/116564 WO2020244144A1 (en) | 2019-06-04 | 2019-11-08 | Unit-type current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910482244.0A CN110085390A (en) | 2019-06-04 | 2019-06-04 | A kind of modular current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110085390A true CN110085390A (en) | 2019-08-02 |
Family
ID=67423431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910482244.0A Pending CN110085390A (en) | 2019-06-04 | 2019-06-04 | A kind of modular current transformer |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110085390A (en) |
| WO (1) | WO2020244144A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN113063448A (en) * | 2021-03-24 | 2021-07-02 | 北京森社电子有限公司 | Modular Hall sensor |
| WO2021206324A1 (en) * | 2020-04-06 | 2021-10-14 | 삼성전자(주) | Transformer device and electronic device comprising same |
| CN114334337A (en) * | 2021-12-28 | 2022-04-12 | 浙江工业大学 | Modularized alternating magnetic field magnetic core with adjustable field intensity and coil device |
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| JP2006140248A (en) * | 2004-11-11 | 2006-06-01 | Midori Anzen Co Ltd | Current transformer for measuring instrument |
| JP2006138689A (en) * | 2004-11-11 | 2006-06-01 | Midori Anzen Co Ltd | Current transformer for measuring instrument |
| JP2006138690A (en) * | 2004-11-11 | 2006-06-01 | Midori Anzen Co Ltd | Core unit |
| KR101164603B1 (en) * | 2011-03-30 | 2012-07-11 | 제이앤디전자(주) | Current transfomer with split core |
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| CN2691026Y (en) * | 2003-11-20 | 2005-04-06 | 北京航天常兴科技发展有限公司 | Counter plug type high precision current mutual inductor |
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2019
- 2019-06-04 CN CN201910482244.0A patent/CN110085390A/en active Pending
- 2019-11-08 WO PCT/CN2019/116564 patent/WO2020244144A1/en active Application Filing
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| WO2021206324A1 (en) * | 2020-04-06 | 2021-10-14 | 삼성전자(주) | Transformer device and electronic device comprising same |
| CN113063448A (en) * | 2021-03-24 | 2021-07-02 | 北京森社电子有限公司 | Modular Hall sensor |
| CN114334337A (en) * | 2021-12-28 | 2022-04-12 | 浙江工业大学 | Modularized alternating magnetic field magnetic core with adjustable field intensity and coil device |
| CN114334337B (en) * | 2021-12-28 | 2024-05-03 | 浙江工业大学 | Modularized alternating magnetic field magnetic core with adjustable field strength and coil device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020244144A1 (en) | 2020-12-10 |
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