CN211742916U - Current transformer with balanced magnetic field - Google Patents
Current transformer with balanced magnetic field Download PDFInfo
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- CN211742916U CN211742916U CN202020830063.0U CN202020830063U CN211742916U CN 211742916 U CN211742916 U CN 211742916U CN 202020830063 U CN202020830063 U CN 202020830063U CN 211742916 U CN211742916 U CN 211742916U
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- current transformer
- induction coil
- mounting groove
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Abstract
The utility model discloses a magnetic field balance's current transformer relates to the current detection, solve the technical problem that there is magnetic field imbalance in the current transformer device, current transformer includes the shell, shell cavity's middle part is equipped with the installation base, the periphery of installation base is equipped with the magnetic field balance piece respectively, first induction coil passes through the magnetic field balance piece and connects shell cavity bottom, it is equipped with second induction coil to surround on the first induction coil, be equipped with two electric conductors that are used for connecting the detection wire in the installation base, the one end protrusion of two electric conductors is in the installation base top, the other end of two electric conductors extends to the outside along the shell bottom respectively, shell outlying one side is equipped with two lock joint bosss of radial extension and symmetrical arrangement. The utility model discloses a set up the magnetic field balance piece between shell bottom and first induction coil, can improve the equilibrium in magnetic field, improve and detect the precision.
Description
Technical Field
The utility model relates to a current detection, more specifically say, it relates to a magnetic field balance's current transformer.
Background
The current transformer is an instrument for measuring primary side heavy current into secondary side small current according to the electromagnetic induction principle, so as to realize standardization and miniaturization of measuring instruments, protective equipment and automatic control equipment. At present, the phenomenon that the magnetic field of the current mutual inductance device is unbalanced due to the unreasonable structure of the current mutual inductance device can affect the detection precision due to the unbalanced magnetic field.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is not enough to the above-mentioned of prior art, the utility model aims at providing a can improve magnetic field balance's current transformer.
The technical scheme of the utility model is that: the utility model provides a balanced current transformer in magnetic field, includes the shell, the middle part of shell inner chamber is equipped with the installation boss of coaxial arrangement, the periphery of installation boss is equipped with magnetic field balance piece, first induction coil respectively, first induction coil passes through magnetic field balance piece is connected shell inner chamber bottom, the second induction coil that surrounds on the first induction coil, be equipped with two interval arrangement's the electric conductor that is used for connecting the detection wire in the installation boss, two the one end protrusion in installation boss top, two the other end of electric conductor is followed respectively shell bottom extends to the outside, shell outlying one side is equipped with two radial extension and symmetrical arrangement's lock joint boss, be equipped with on the shell of lock joint boss one side with two first terminal of first induction coil electric connection, be equipped with on the shell of lock joint boss opposite side with two second of second induction coil electric connection connect the terminal And (4) a wire column.
As a further improvement, the magnetic field balance sheet is a silicon steel sheet or an iron sheet.
Furthermore, the bottom of the inner cavity of the shell is provided with a plurality of limiting bosses which are uniformly arranged around the axial lead of the shell.
Furthermore, an inclined rib plate extending axially is arranged between the buckling boss and the shell.
Further, an insulating partition plate is arranged between the two electric conductors.
Furthermore, a through hole is formed in the mounting boss, the two electric conductors are respectively located on two sides of the through hole, and a partition mounting groove used for mounting the insulating partition is formed in the middle of the through hole.
Further, be equipped with respectively on the shell and be used for the installation the first mounting groove of first terminal, be used for the installation the second mounting groove of second terminal, first mounting groove, second mounting groove all communicate the shell inner chamber.
Furthermore, the bottom of the housing is respectively provided with a first bottom plate corresponding to the first mounting groove and a second bottom plate corresponding to the second mounting groove, and the bottoms of the first bottom plate and the second bottom plate are respectively provided with a conductor mounting groove adapted to the conductor.
Furthermore, the first bottom plate and the second bottom plate are respectively provided with an inserting groove, and the electric conductor is provided with an inserting plate inserted in the inserting groove.
Advantageous effects
Compared with the prior art, the utility model, the advantage that has does: the utility model discloses a set up the magnetic field balance piece between shell bottom and first induction coil, make the magnetic core in the first induction coil and the electric conductor of shell bottom pull open the distance, reduce magnetic field interference, can improve the equilibrium in magnetic field to improve and detect the precision.
Drawings
Fig. 1 is an exploded schematic view of the present invention;
FIG. 2 is a schematic structural view of the housing of the present invention;
fig. 3 is a schematic structural diagram of the bottom of the middle housing of the present invention.
Wherein: the method comprises the following steps of 1-shell, 2-installation boss, 3-magnetic field balance sheet, 4-first induction coil, 5-second induction coil, 6-electric conductor, 7-buckling boss, 8-first binding post, 9-second binding post, 10-limiting boss, 11-inclined rib plate, 12-insulating partition plate, 13-through hole, 14-partition plate installation groove, 15-first installation groove, 16-second installation groove, 17-first bottom plate, 18-second bottom plate, 19-electric conductor installation groove and 20-splicing groove.
Detailed Description
The invention will be further described with reference to specific embodiments shown in the drawings.
Referring to fig. 1-3, a magnetic field balanced current transformer comprises a housing 1, and a mounting boss 2 coaxially arranged is arranged in the middle of an inner cavity of the housing 1. The periphery of installation boss 2 is equipped with magnetic field balance piece 3, first induction coil 4 respectively in the cover, and first induction coil 4 passes through magnetic field balance piece 3 and connects 1 inner chamber bottom of shell, and first induction coil 4 is made on the magnetic core by the winding of copper line. And a second induction coil 5 is arranged on the first induction coil 4 in a winding manner, namely the second induction coil 5 is formed by winding a copper wire on the first induction coil 4. Be equipped with two interval arrangement's the electric conductor 6 that is used for connecting the detection wire in the installation boss 2, electric conductor 6 is the sheet structure, and the one end protrusion in installation boss 2 top of two electric conductors 6, the other end of two electric conductors 6 extends to the outside along 1 bottoms of shell respectively. Two fastening bosses 7 which extend radially and are symmetrically arranged are arranged on one side of the periphery of the shell 1 and are used for fastening on a circuit board. Two first binding posts 8 electrically connected with the first induction coil 4 are arranged on the shell 1 on one side of the fastening boss 7, namely, two ends of the first induction coil 4 are respectively connected to the two first binding posts 8. Two second binding posts 9 electrically connected with the second induction coil 5 are arranged on the shell 1 on the other side of the fastening boss 7, namely, two ends of the second induction coil 5 are respectively connected to the two second binding posts 9. The first binding post 8 and the second binding post 9 are used for being plugged into welding holes on a circuit board. Through set up magnetic field balance piece 3 between shell 1 bottom and first induction coil 4, make the magnetic core in the first induction coil 4 and the electric conductor 6 of shell 1 bottom pull open the distance, reduce magnetic field interference, can improve the equilibrium in magnetic field to improve and detect the precision.
In the present embodiment, the magnetic field balance sheet 3 is a silicon steel sheet or an iron sheet. The bottom of the inner cavity of the shell 1 is provided with a plurality of limiting bosses 10 which are uniformly arranged around the axial lead of the shell 1, and the limiting bosses 10 are used for further adjusting the distance between the magnetic core and the bottom of the shell 1 and improving the balance of a magnetic field. The height of the limiting boss 10 can be set according to actual conditions, and in the embodiment, the height of the limiting boss 10 is 1-3 mm.
The inclined rib plate 11 extending axially is arranged between the fastening boss 7 and the shell 1, so that the working strength of the fastening boss 7 can be improved.
An insulating partition 12 is provided between the two electrical conductors 6. The installation boss 2 is internally provided with a through hole 13, the two electric conductors 6 are respectively positioned at two sides of the through hole 13, and the middle part of the through hole 13 is provided with a partition installation groove 14 for installing an insulating partition 12.
Be equipped with the first mounting groove 15 that is used for installing first terminal 8, the second mounting groove 16 that is used for installing second terminal 9 on the shell 1 respectively, first mounting groove 15, second mounting groove 16 all communicate the 1 inner chamber of shell. The both ends end of a thread of first induction coil 4 is connected respectively on two first terminals 8 through first mounting groove 15, and the both ends end of a thread of second induction coil 5 is connected respectively on two second terminals 9 through second mounting groove 16, when pouring insulating material toward shell 1 in, insulating material can cover the both ends end of a thread of first induction coil 4 and the both ends end of a thread of second induction coil 5.
The bottom of the shell 1 is respectively provided with a first bottom plate 17 corresponding to the first mounting groove 15 and a second bottom plate 18 corresponding to the second mounting groove 16, and the bottom of the first bottom plate 17 and the bottom of the second bottom plate 18 are respectively provided with a conductor mounting groove 19 adapted to the conductor 6 for positioning and mounting the conductor 6. The first bottom plate 17 and the second bottom plate 18 are further respectively provided with an insertion groove 20, the electric conductor 6 is provided with an insertion plate inserted in the insertion groove 20, and the insertion plate and the insertion groove 20 are in interference fit, so that the electric conductor 6 can be fixed.
The above is only a preferred embodiment of the present invention, and it should be noted that for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which will not affect the utility of the invention and the utility of the patent.
Claims (9)
1. A current transformer with balanced magnetic field comprises a shell (1) and is characterized in that a mounting boss (2) which is coaxially arranged is arranged in the middle of an inner cavity of the shell (1), a magnetic field balancing piece (3) and a first induction coil (4) are respectively sleeved on the periphery of the mounting boss (2), the first induction coil (4) is connected with the bottom of the inner cavity of the shell (1) through the magnetic field balancing piece (3), a second induction coil (5) is arranged on the first induction coil (4) in a surrounding mode, two electric conductors (6) which are arranged at intervals and used for being connected with a detection lead are arranged in the mounting boss (2), one ends of the two electric conductors (6) protrude out of the top of the mounting boss (2), the other ends of the two electric conductors (6) respectively extend outwards along the bottom of the shell (1), two buckling bosses (7) which radially extend and are symmetrically arranged are arranged on one side of the periphery of the shell (1), be equipped with on shell (1) of lock joint boss (7) one side with two first terminal (8) of first induction coil (4) electric connection, be equipped with on shell (1) of lock joint boss (7) opposite side with two second terminal (9) of second induction coil (5) electric connection.
2. The magnetic field balanced current transformer according to claim 1, characterized in that the magnetic field balance sheet (3) is a silicon steel sheet or an iron sheet.
3. A magnetic field balanced current transformer according to claim 1, characterized in that the bottom of the inner cavity of the housing (1) is provided with a plurality of limit bosses (10) evenly arranged around the axial lead of the housing (1).
4. A magnetic field balanced current transformer according to claim 1, characterized in that axially extending inclined ribs (11) are provided between the snap-fit boss (7) and the housing (1).
5. A magnetic field balanced current transformer according to claim 1, characterized in that an insulating barrier (12) is provided between the two conductors (6).
6. The current transformer with balanced magnetic field according to claim 5, characterized in that a through hole (13) is arranged in the mounting boss (2), the two conductors (6) are respectively located at two sides of the through hole (13), and a partition mounting groove (14) for mounting the insulating partition (12) is arranged in the middle of the through hole (13).
7. The magnetic field balanced current transformer according to claim 1, characterized in that the housing (1) is respectively provided with a first mounting groove (15) for mounting the first terminal (8) and a second mounting groove (16) for mounting the second terminal (9), and the first mounting groove (15) and the second mounting groove (16) are both communicated with the inner cavity of the housing (1).
8. The magnetic field balanced current transformer according to claim 7, characterized in that the bottom of the housing (1) is respectively provided with a first bottom plate (17) corresponding to the first mounting groove (15) and a second bottom plate (18) corresponding to the second mounting groove (16), and the bottom of the first bottom plate (17) and the bottom of the second bottom plate (18) are respectively provided with a conductor mounting groove (19) adapted to the conductor (6).
9. The magnetic field balanced current transformer according to claim 8, characterized in that the first bottom plate (17) and the second bottom plate (18) are respectively provided with a plug-in slot (20), and the conductor (6) is provided with a plug-in board plugged in the plug-in slot (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020830063.0U CN211742916U (en) | 2020-05-18 | 2020-05-18 | Current transformer with balanced magnetic field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020830063.0U CN211742916U (en) | 2020-05-18 | 2020-05-18 | Current transformer with balanced magnetic field |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211742916U true CN211742916U (en) | 2020-10-23 |
Family
ID=72851680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020830063.0U Active CN211742916U (en) | 2020-05-18 | 2020-05-18 | Current transformer with balanced magnetic field |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211742916U (en) |
-
2020
- 2020-05-18 CN CN202020830063.0U patent/CN211742916U/en active Active
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