CN211879209U - Mutual inductor capable of balancing magnetic field - Google Patents
Mutual inductor capable of balancing magnetic field Download PDFInfo
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- CN211879209U CN211879209U CN202020830072.XU CN202020830072U CN211879209U CN 211879209 U CN211879209 U CN 211879209U CN 202020830072 U CN202020830072 U CN 202020830072U CN 211879209 U CN211879209 U CN 211879209U
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- magnetic field
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Abstract
The utility model discloses a can balance mutual-inductor in magnetic field relates to current detection, solves the technical problem that there is unbalanced magnetic field in the mutual inductance device of current, the mutual-inductor includes the shell, shell cavity's middle part is equipped with the installation base of coaxial arrangement, the periphery of installation base is equipped with magnetic field balance piece, first induction coil respectively, first induction coil passes through magnetic field balance piece is connected shell cavity bottom, it is equipped with the second and responds the coil to surround on the first induction coil, be equipped with the electric conductor that is used for connecting the detection wire of two interval arrangements in the installation base, two the one end protrusion of electric conductor in installation base top, two the other end of electric conductor is followed respectively the shell bottom is extended to the outside. 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 mutual-inductor that can balanced magnetic field.
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 is caused, and the detection precision is influenced by 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 mutual-inductor that can balanced magnetic field.
The technical scheme of the utility model is that: the utility model provides a can balance mutual-inductor 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, it responds to the coil to surround being equipped with the second 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 the installation boss top, two the other end of electric conductor is followed respectively shell bottom extends to the outside, one side of shell be equipped with respectively with two first terminals of first induction coil electric connection, with two second terminals of second induction coil electric connection.
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.
Further, an insulating partition plate is arranged between the two electric conductors.
Furthermore, a mounting hole is formed in the mounting boss, the two electric conductors are respectively located on two sides of the mounting hole, and a partition plate mounting groove used for mounting the insulating partition plate is formed in the middle of the mounting hole.
Further, the shell is provided with a first mounting groove used for mounting the first binding post and a second mounting groove used for mounting the second binding post, a symmetrical arrangement structure is arranged between the first mounting groove and the second mounting groove, and the first mounting groove and the second mounting groove are communicated with the inner cavity of the shell.
Furthermore, the bottom of the shell is respectively provided with positioning bosses corresponding to the two electric conductors, and the electric conductors are provided with positioning holes matched with the positioning bosses.
Furthermore, the other side of shell is equipped with two symmetric arrangement's the boss of stepping down.
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: 1-shell, 2-installation boss, 3-magnetic field balance sheet, 4-first induction coil, 5-second induction coil, 6-conductor, 7-first binding post, 8-second binding post, 9-limit boss, 10-insulation partition board, 11-installation hole, 12-partition board installation groove, 13-first installation groove, 14-second installation groove, 15-positioning boss and 16-abdicating boss.
Detailed Description
The invention will be further described with reference to specific embodiments shown in the drawings.
Referring to fig. 1-3, a mutual inductor capable of balancing magnetic fields comprises a shell 1, wherein a mounting boss 2 which is coaxially arranged is arranged in the middle of an inner cavity of the shell 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. One side of shell 1 is equipped with two first terminal 7 with first induction coil 4 electric connection respectively, with two second terminal 8 of second induction coil 5 electric connection, and the both ends end of a thread of first induction coil 4 is connected respectively on two first terminal 7 promptly, and the both ends end of a thread of second induction coil 5 is connected respectively on two second terminal 8, and first terminal 7, second terminal 8 are used for pegging graft the welding hole on the 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 9 which are uniformly arranged around the axial lead of the shell 1. Spacing boss 9 is used for further adjusting the distance of magnetic core and shell 1 bottom, improves the equilibrium in magnetic field. The height of the limit boss 9 can be set according to actual conditions, and in the embodiment, the height of the limit boss 9 is 1-3 mm.
An insulating spacer 10 is provided between the two electrical conductors 6. Be equipped with mounting hole 11 in the installation boss 2, two electric conductors 6 are located the both sides of mounting hole 11 respectively, and the middle part of mounting hole 11 is equipped with the baffle mounting groove 12 that is used for installing insulating barrier 10.
The shell 1 is provided with a first mounting groove 13 for mounting the first binding post 7 and a second mounting groove 14 for mounting the second binding post 8, the first mounting groove 13 and the second mounting groove 14 are symmetrically arranged, and the first mounting groove 13 and the second mounting groove 14 are communicated with the inner cavity of the shell 1. The both ends end of a thread of first induction coil 4 is connected respectively on two first terminals 7 through first mounting groove 13, and the both ends end of a thread of second induction coil 5 is connected respectively on two second terminals 8 through second mounting groove 14, 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 positioning boss 15 corresponding to the two electric conductors 6, and the electric conductors 6 are provided with positioning holes matched with the positioning bosses 15. The positioning boss 15 is in interference fit with the positioning hole, and can play a role in fixing the conductor 6.
Two symmetrically arranged abdicating bosses 16 are arranged on the other side of the shell 1, so that the influence on the work of the mutual inductor caused by the over-small distance between the element on the circuit board and the shell 1 can be avoided.
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 (8)
1. The mutual inductor capable of balancing the magnetic field comprises an outer 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 outer 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 outer shell (1) through the magnetic field balancing piece (3), a second induction coil (5) is arranged on the first induction coil (4) in an encircling mode, two electric conductors (6) which are arranged at intervals and used for being connected with detection wires are arranged in the mounting boss (2), one end of each electric conductor (6) protrudes out of the top of the mounting boss (2), the other end of each electric conductor (6) extends outwards from the bottom of the outer shell (1), and two first binding posts (binding posts) which are electrically connected with the first induction coil (4) are respectively arranged on one side of the outer shell (1) 7) And two second binding posts (8) electrically connected with the second induction coil (5).
2. The mutual inductor capable of balancing magnetic fields according to claim 1, wherein the magnetic field balancing sheet (3) is a silicon steel sheet or an iron sheet.
3. The mutual inductor capable of balancing magnetic fields according to claim 1, wherein the bottom of the inner cavity of the shell (1) is provided with a plurality of limiting bosses (9) uniformly arranged around the axial lead of the shell (1).
4. A transformer according to claim 1, characterised in that an insulating barrier (10) is provided between the two conductors (6).
5. The mutual inductor capable of balancing magnetic fields according to claim 4, wherein a mounting hole (11) is formed in the mounting boss (2), the two electric conductors (6) are respectively located on two sides of the mounting hole (11), and a partition mounting groove (12) for mounting the insulating partition (10) is formed in the middle of the mounting hole (11).
6. The mutual inductor capable of balancing magnetic fields according to claim 1, wherein the housing (1) is provided with a first mounting groove (13) for mounting the first terminal (7) and a second mounting groove (14) for mounting the second terminal (8), the first mounting groove (13) and the second mounting groove (14) are symmetrically arranged, and the first mounting groove (13) and the second mounting groove (14) are communicated with an inner cavity of the housing (1).
7. The mutual inductor capable of balancing magnetic fields according to claim 1, wherein the bottom of the housing (1) is respectively provided with a positioning boss (15) corresponding to the two conductors (6), and the conductors (6) are provided with positioning holes adapted to the positioning bosses (15).
8. The mutual inductor capable of balancing magnetic fields according to any one of claims 1 to 7, wherein the other side of the housing (1) is provided with two symmetrically arranged offset bosses (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020830072.XU CN211879209U (en) | 2020-05-18 | 2020-05-18 | Mutual inductor capable of balancing magnetic field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020830072.XU CN211879209U (en) | 2020-05-18 | 2020-05-18 | Mutual inductor capable of balancing magnetic field |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211879209U true CN211879209U (en) | 2020-11-06 |
Family
ID=73234396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020830072.XU Active CN211879209U (en) | 2020-05-18 | 2020-05-18 | Mutual inductor capable of balancing magnetic field |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211879209U (en) |
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2020
- 2020-05-18 CN CN202020830072.XU patent/CN211879209U/en active Active
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