CN209045343U - High-frequency current transformer with replaceable coil - Google Patents
High-frequency current transformer with replaceable coil Download PDFInfo
- Publication number
- CN209045343U CN209045343U CN201821400626.1U CN201821400626U CN209045343U CN 209045343 U CN209045343 U CN 209045343U CN 201821400626 U CN201821400626 U CN 201821400626U CN 209045343 U CN209045343 U CN 209045343U
- Authority
- CN
- China
- Prior art keywords
- coil
- shell
- magnetic core
- frequency magnetic
- current transformer
- 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.)
- Active
Links
- 238000004804 winding Methods 0.000 claims abstract description 20
- 230000001681 protective effect Effects 0.000 claims abstract description 14
- 230000004323 axial length Effects 0.000 claims description 7
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000006355 external stress Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Transformers For Measuring Instruments (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
The utility model provides a high-frequency current transformer with a replaceable coil, which comprises a high-frequency magnetic core, a coil protection outer protective shell, a BNC joint, a coil with a variable winding and a coil inner supporting shell; the coil inner supporting shell is in a hollow tubular shape, and a high-frequency magnetic core is penetrated into the coil inner supporting shell and fixed with the high-frequency magnetic core; the coil winding inner support shell is axially wound and fixed on the outer surface of the coil inner support shell; the winding size of the coil is determined by the number of winding turns of the coil; the coil protection outer protection shell is in a hollow tubular shape and is fixedly sleeved outside the coil and the coil inner support shell; the BNC connector is arranged on the coil protection outer protection shell, one end of the BNC connector penetrates through the inner side wall of the coil protection outer protection shell and is connected with the two ends of the coil, and the other end of the BNC connector extends to the outside of the coil protection outer protection shell. Implement the utility model discloses, under the unchangeable circumstances of high frequency magnetic core, adopt and separate independent different coils with high frequency magnetic core can realize the performance change, greatly reduced purchasing cost.
Description
Technical Field
The utility model relates to a current measurement technical field especially relates to a high frequency current transformer of removable coil.
Background
Partial discharge parameters are important indexes of the health state of a high-voltage cable line, and currently, a high-frequency pulse current method is mainly adopted for live detection, and a high-frequency current transformer is required to be adopted in the method.
As shown in fig. 1, the conventional high frequency current transformer includes a case 1/High frequency magnetic core 2/Coil 3/And BNC connector 4/(ii) a Wherein the coil 3/Wound around a high-frequency core 2/Upper and lower with the high frequency magnetic core 2/Is mounted to the housing 1/Inside, the two ends of which are introduced with BNC joints 4/Penetrating into the housing 1/And through the BNC connector 4/The other end of which penetrates out of the shell 1/Is connected with other current collecting equipment and is filled with solidified filler in the high-frequency magnetic core 2/And a housing 1/In the gap therebetween for reducing the external stress to the high-frequency core 2/And a coil 3/The damage of (2).
However, the existing high-frequency current transformer is expensive in product price, and more importantly, the winding characteristics of the high-frequency current transformer determine part of performance indexes of the product, once the product is produced, the winding characteristics are solidified but cannot be changed, so that a plurality of high-frequency current transformers with different performances are needed for obtaining more performance indexes, and cost waste is easily caused.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a technical problem that will solve provides a high frequency current transformer of removable coil, under the unchangeable circumstances of high frequency magnetic core, adopts and can realize the performance change with the independent different coils of high frequency magnetic core separation, greatly reduced purchasing cost.
In order to solve the above technical problem, an embodiment of the present invention provides a high-frequency current transformer with a replaceable coil, which includes a high-frequency magnetic core, a coil protection outer protection shell, a BNC connector, a coil with a variable winding, and a coil inner support shell; wherein,
the coil inner supporting shell is in a hollow tubular shape, and the high-frequency magnetic core is penetrated into the coil inner supporting shell and fixed with the coil inner supporting shell;
the coil is axially wound around the coil inner support shell and is fixed on the outer surface of the coil inner support shell; wherein the winding size of the coil is determined by the number of winding turns of the coil;
the coil protection outer protection shell is in a hollow tubular shape and is fixedly sleeved outside the coil and the coil inner support shell;
the BNC connector is arranged on the coil protection outer protection shell, one end of the BNC connector penetrates through the inner side wall of the coil protection outer protection shell and is connected with the two ends of the coil, and the other end of the BNC connector extends to the outside of the coil protection outer protection shell.
Wherein the cross-sectional profile shape of the support shell in the coil is consistent with the cross-sectional profile shape of the high-frequency magnetic core.
Wherein the coil inner supporting shell is made of magnetic Fe3O4The material is prepared.
Wherein the axial length of the coil protection outer protective shell is greater than or equal to the axial length of the coil inner support shell.
Wherein, still include: a magic tape fixing band pasted on the high-frequency magnetic core; the magic tape is used for fixing the two high-frequency magnetic cores together.
Implement the embodiment of the utility model provides a, following beneficial effect has:
1. in the embodiment of the utility model, the number of turns of the coil wound on the inner supporting shell of the coil can be changed, so that under the condition that the high-frequency magnetic core is not changed, performance change can be realized by adopting different coils (different numbers of turns of winding) separated and independent from the high-frequency magnetic core, the problems of single production performance and high price of the high-frequency current transformer are solved, and the purchasing cost is greatly reduced;
2. the embodiment of the utility model provides an in, because support shell, coil and coil protection outer protective housing in the coil dismantles and the installation is convenient, not only simple structure, still labour saving and time saving.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings obtained from these drawings still belong to the scope of the present invention without inventive laboriousness.
FIG. 1 is a plan view of a conventional horizontal cross needle;
fig. 2 is a plan structure view of a high-frequency current transformer with replaceable coils according to an embodiment of the present invention;
fig. 3 is a plane explosion diagram of the coil protection outer protective shell, the BNC connector, the coil with variable winding and the coil inner supporting shell in the high-frequency current transformer with replaceable coil provided by the embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 2 and fig. 3, in an embodiment of the present invention, a coil-replaceable high-frequency current transformer is provided, which includes a high-frequency magnetic core 1, a coil protection outer protection shell 2, a BNC connector 3, a winding-variable coil 4, and a coil inner support shell 5; wherein,
the coil inner supporting shell 5 is in a hollow tubular shape, and a high-frequency magnetic core 1 is penetrated into the coil inner supporting shell and is fixed with the high-frequency magnetic core 1;
the coil 4 is axially wound around the coil inner support shell 5 and fixed to the outer surface of the coil inner support shell 5 (as shown by arrow a in fig. 3); wherein, the winding size of the coil 4 is determined by the number of winding turns;
the coil protection outer protection shell 2 is a hollow tube, and is fixedly sleeved on the coil 4 and the outside of the coil inner protection shell 5 (as shown by an arrow b in fig. 3);
BNC connects 3 and sets up on coil protection outer protective housing 2, and its one end runs through the inside wall of coil protection outer protective housing 2 and links to each other with the both ends of coil 4, and the other end extends to the outside of coil protection outer protective housing 2, can realize linking to each other with external current collection equipment.
It should be noted that the manner of fixing the coil inner support case 5 to the high-frequency core 1 and the manner of fixing the coil protective outer case 2 to the coil inner support case 5 include, but are not limited to, a snap fit or the like.
It can be understood that, according to actual current's measurement needs, can change coil 4 and support winding number of turns on shell 5 and change the winding size in the coil to changed high frequency current transformer's performance unicity, again because high frequency magnetic core 1 is the most expensive part on the high frequency current transformer, consequently the embodiment of the utility model provides an in not needing to change high frequency magnetic core 1, just can realize high frequency current transformer's performance change, greatly reduced purchasing cost. Meanwhile, the coil protection outer protection shell 2, the BNC connector 3, the coil 4 and the coil inner support shell 5 are convenient to disassemble and assemble, time-saving, labor-saving and simple in structure. Of course, the axial length of the support shell 5 in the coil should be as long as possible to satisfy the winding length of the coil 4.
The embodiment of the utility model provides an in, the cross-section outline shape of support shell 5 is unanimous with the cross-section outline shape of high frequency magnetic core 1 in the coil, can make the two cooperation easier like this, and the fixed mode that the two adopted is more convenient moreover.
In the embodiment of the utility model, the inner supporting shell 5 of the coil is made of magnetic Fe3O4The material is prepared, and the magnetism generated by the high-frequency magnetic core 1 can be improved.
The embodiment of the utility model provides an in, the axial length of casing 5 in the axial length more than or equal to coil of coil protection outer protective housing 2 avoids exposing of casing 5 and coil 4 in the coil like this, further strengthens the protectiveness.
The embodiment of the utility model provides an in, still include: paste fixed band 6 is pasted to magic on high frequency magnetic core 1, and this magic is pasted fixed band 6 and is formed closed magnetic field with two high frequency magnetic cores 1 are fixed together, can further strengthen the embodiment of the utility model provides an in high frequency current transformer's response sensitivity.
Implement the embodiment of the utility model provides a, following beneficial effect has:
1. in the embodiment of the utility model, the number of turns of the coil wound on the inner supporting shell of the coil can be changed, so that under the condition that the high-frequency magnetic core is not changed, performance change can be realized by adopting different coils (different numbers of turns of winding) separated and independent from the high-frequency magnetic core, the problems of single production performance and high price of the high-frequency current transformer are solved, and the purchasing cost is greatly reduced;
2. the embodiment of the utility model provides an in, because support shell, coil and coil protection outer protective housing in the coil dismantles and the installation is convenient, not only simple structure, still labour saving and time saving.
The above disclosure is only a preferred embodiment of the present invention, and certainly should not be taken as limiting the scope of the invention, which is defined by the claims and their equivalents.
Claims (5)
1. A high-frequency current transformer with a replaceable coil is characterized by comprising a high-frequency magnetic core (1), a coil protection outer protection shell (2), a BNC joint (3), a coil (4) with a variable winding and a coil inner support shell (5); wherein,
the coil internal support shell (5) is in a hollow tubular shape, penetrates into the high-frequency magnetic core (1) and is fixed with the high-frequency magnetic core (1);
the coil (4) is axially wound around the coil inner support shell (5) and fixed on the outer surface of the coil inner support shell (5); wherein the winding size of the coil (4) is determined by the number of winding turns;
the coil protection outer protection shell (2) is in a hollow tubular shape and is fixedly sleeved outside the coil (4) and the coil inner support shell (5);
BNC connects (3) set up in on coil protection outer protective housing (2), its one end run through the inside wall of coil protection outer protective housing (2) and with the both ends of coil (4) link to each other, and the other end extends to the outside of coil protection outer protective housing (2).
2. The coil-replaceable high-frequency current transformer according to claim 1, characterized in that a sectional profile shape of the support case (5) in the coil is conformed to a sectional profile shape of the high-frequency core (1).
3. The coil-replaceable high-frequency current transformer according to claim 2, characterized in that the coil inner supporting shell (5) is made of magnetic Fe3O4The material is prepared.
4. The coil-replaceable high-frequency current transformer according to claim 3, characterized in that the axial length of the coil protection outer protective shell (2) is greater than or equal to the axial length of the coil inner support shell (5).
5. The coil-replaceable high-frequency current transformer according to claim 4, further comprising: a magic tape fixing band (6) adhered on the high-frequency magnetic core (1); the magic tape fixing band (6) fixes two adjacent high-frequency magnetic cores (1) together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821400626.1U CN209045343U (en) | 2018-08-29 | 2018-08-29 | High-frequency current transformer with replaceable coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821400626.1U CN209045343U (en) | 2018-08-29 | 2018-08-29 | High-frequency current transformer with replaceable coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209045343U true CN209045343U (en) | 2019-06-28 |
Family
ID=67031832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821400626.1U Active CN209045343U (en) | 2018-08-29 | 2018-08-29 | High-frequency current transformer with replaceable coil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209045343U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112201454A (en) * | 2020-12-10 | 2021-01-08 | 南京博纳威电子科技有限公司 | High-precision intelligent current transformer |
-
2018
- 2018-08-29 CN CN201821400626.1U patent/CN209045343U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112201454A (en) * | 2020-12-10 | 2021-01-08 | 南京博纳威电子科技有限公司 | High-precision intelligent current transformer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102436897B (en) | Flexible Rogowski coil used for detecting direct-current system short-circuit current and method for designing same | |
| CN209045343U (en) | High-frequency current transformer with replaceable coil | |
| CN101122619A (en) | Flexible rogowski coil for impulse current measurement | |
| CN201489038U (en) | Flexible Roche coil for measuring impulse current | |
| CN201465789U (en) | Open type current mutual inductor | |
| CN207541141U (en) | High Frequency Current Sensor based on Rogowski coil principle | |
| CN207765247U (en) | A kind of Rogowski coil current transformer | |
| CN102024557A (en) | Electronic type current transformer | |
| US4249153A (en) | Ring transformer for resistance butt welders | |
| CN105703221B (en) | A kind of lightning rod of remote transmission thunder-strike current | |
| CN105810388B (en) | A kind of filter inductor | |
| CN108008264A (en) | Sensor for high voltage electric equipment partial discharge monitoring | |
| CN201503285U (en) | Novel electromagnetic flow meter | |
| CN209591780U (en) | A kind of electric current metering transformer device with microcrystalline iron core | |
| CN203759228U (en) | Magnetic device multipolar magnetic flux measuring tool | |
| CN208862648U (en) | A kind of assembling structure of water-cooled stator | |
| CN202695120U (en) | Armored shielded high-voltage test transformer | |
| CN207263817U (en) | A kind of open type Rogowski coil | |
| CN202905447U (en) | Modified outdoor current transformer | |
| CN203406126U (en) | Hollow coil provided with closed magnetic circuit | |
| CN206584809U (en) | Dry-type transformer coil | |
| CN206685246U (en) | A kind of transformer coiling skeleton | |
| CN204882679U (en) | Flexible differential current sensor that low temperature floats | |
| CN206471185U (en) | A kind of novel high-frequency transformer | |
| CN205280858U (en) | Leakage current sensor for power equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |