CN220627583U - Patch type current transformer - Google Patents
Patch type current transformer Download PDFInfo
- Publication number
- CN220627583U CN220627583U CN202322144736.3U CN202322144736U CN220627583U CN 220627583 U CN220627583 U CN 220627583U CN 202322144736 U CN202322144736 U CN 202322144736U CN 220627583 U CN220627583 U CN 220627583U
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- shell
- coil
- current transformer
- annular magnetic
- magnetic core
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- 239000003822 epoxy resin Substances 0.000 claims abstract description 10
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 10
- 238000004804 winding Methods 0.000 claims description 17
- 238000005260 corrosion Methods 0.000 abstract description 6
- 230000007797 corrosion Effects 0.000 abstract description 6
- 230000007613 environmental effect Effects 0.000 abstract description 6
- 230000003647 oxidation Effects 0.000 abstract description 6
- 238000007254 oxidation reaction Methods 0.000 abstract description 6
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 description 5
- 238000005538 encapsulation Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009545 invasion Effects 0.000 description 2
- 238000012806 monitoring device Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Transformers For Measuring Instruments (AREA)
Abstract
The utility model relates to the technical field of current transformers, in particular to a patch type current transformer which comprises a shell, an annular magnetic core arranged in the shell and a coil wound on the annular magnetic core, wherein a mounting hole is formed in the edge of the bottom of the shell, a groove communicated with each mounting hole is formed in the end face of the bottom of the shell, the end part of a lead wire of the coil is connected into the mounting hole along the groove, a lead needle connected with the end part of the lead wire of the coil is further arranged on the shell, the lead needle is inserted into the mounting hole, and an epoxy resin layer for wrapping the annular magnetic core and the coil is poured into the shell. According to the utility model, the epoxy resin layer is poured into the shell to wrap the annular magnetic core and the coil, so that the integrity of the electronic device is enhanced, the resistance to external impact and vibration can be increased, and meanwhile, corrosion and oxidation caused by environmental attack can be avoided; thereby prolonging the service life of the current transformer and improving the practicability.
Description
Technical Field
The utility model relates to the technical field of current transformers, in particular to a patch type current transformer.
Background
The high-voltage cable is widely applied to high-voltage power transmission and transformation networks, and mostly adopts the installation modes of direct burial, tunnel or bridge. In order to fully understand the real-time state of the cable, an online detection mode is generally adopted, that is, an online monitoring device such as a circulation monitoring device, a cable induction energy-taking device and the like is installed, and each detection device is generally provided with a current transformer. The current transformer principle is based on the electromagnetic induction principle, and the current transformer consists of an annular magnetic core and a coil.
However, the patch type alternating current transformer in the prior art has poor encapsulation sealing effect, gaps exist in encapsulation, and components are extremely easy to oxidize and corrode in the process of contacting with humid environment, light radiation, heat radiation and dust; and there is the space between coil and the encapsulation, and is low to the resistance of external impact, vibrations, and then leads to whole current transformer's life to reduce, and the practicality is relatively poor.
Disclosure of Invention
In order to solve the problems of the background technology, the utility model provides a patch type current transformer, which can avoid corrosion and oxidation caused by environmental attack; the integrity of the electronic device is enhanced, and the resistance to external impact and vibration can be increased, so that the service life of the current transformer is prolonged, and the practicability is improved.
The utility model solves the technical problems by adopting the following scheme: the utility model provides a paster type current transformer, includes the shell, sets up annular magnetic core and winding and the coil on the annular magnetic core in the shell, its characterized in that: the shell is characterized in that a mounting hole is formed in the edge of the bottom of the shell, grooves communicated with the mounting holes are formed in the end face of the bottom of the shell, the lead end parts of the coils are connected into the mounting holes along the grooves, a lead pin connected with the lead end parts of the coils is further arranged on the shell, the lead pin is inserted into the mounting hole, and an epoxy resin layer wrapping the annular magnetic core and the coils is poured into the shell.
By adopting the technical scheme, corrosion and oxidation caused by environmental attack can be avoided; the integrity of the electronic device is enhanced, and the resistance to external impact and vibration can be increased, so that the service life of the current transformer is prolonged, and the practicability is improved.
Further, the top of the shell is round, and the top of the shell and the annular magnetic core are coaxially arranged.
By adopting the technical scheme, the coil can be fixed at the center of the shell.
Furthermore, a positioning block is arranged at one corner of the upper surface of the bottom of the shell.
By adopting the technical scheme, the coil input direction of the current transformer can be distinguished through the positioning block.
Further, the projection surface of the guide pin is of an L-shaped structure and comprises a vertical end and a horizontal end, the vertical end is inserted into the mounting hole, and the horizontal end extends towards the outer side of the shell.
By adopting the technical scheme, the guide pin can be fixed on the shell, the vertical end in the mounting hole is connected with the end part of the lead wire of the coil through the groove, and the horizontal end extends out of the shell.
Further, the coil comprises a primary winding and a secondary winding, and the primary winding and the secondary winding are alternately wound on the annular magnetic core.
By adopting the technical scheme, the coil winding arrangement mode can use smaller iron cores, so that the volume of the current transformer is reduced.
In summary, the beneficial effects of the utility model are as follows: according to the utility model, the annular magnetic core and the coil wound on the annular magnetic core are arranged in the shell, the edge of the bottom of the shell is provided with the mounting holes, the end face of the bottom of the shell is provided with the grooves communicated with the mounting holes, the lead ends of the coil are connected into the mounting holes along the grooves, the shell is also provided with the guide pins connected with the lead ends of the coil, the guide pins are inserted into the mounting holes, and the shell is internally filled with the epoxy resin layer wrapping the annular magnetic core and the coil, so that corrosion and oxidation caused by environmental invasion can be avoided; the integrity of the electronic device is enhanced, and the resistance to external impact and vibration can be increased, so that the service life of the current transformer is prolonged, and the practicability is improved.
The foregoing description is only an overview of the technical solution of the present utility model, and may be implemented according to the content of the specification in order to make the technical means of the present utility model more clearly understood, and in order to make the above and other objects, features and advantages of the present utility model more clearly understood, the following specific preferred embodiment is given by way of the following detailed description in conjunction with the accompanying drawings.
Drawings
Fig. 1 is a schematic diagram of a first structure of a patch type current transformer according to the present embodiment;
fig. 2 is a schematic diagram of a second structure of the patch type current transformer of the present embodiment;
in the figure: 1. a housing; 11. a positioning block; 12. a groove; 2. a coil; 3. a toroidal core; 4. a needle; 5. an epoxy resin layer.
Detailed Description
In order that the utility model may be more readily understood, a further description of the utility model will be rendered by reference to specific embodiments that are illustrated in the appended drawings.
It should be noted that, as used herein, the terms "center," "upper," "lower," "front," "rear," "left," "right," "top," "inner," "outer," and the like indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, merely to facilitate description of the present utility model and simplify description, and do not indicate or imply that the devices or elements being referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Unless otherwise indicated, the meaning of "a plurality" is two or more.
Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the two elements can be directly connected or indirectly connected through an intermediate medium, and can be communicated with each other. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in a specific case.
As shown in fig. 1 and fig. 2, a patch type current transformer comprises a housing 1, an annular magnetic core 3 arranged in the housing 1, and a coil 2 arranged on the annular magnetic core 3, wherein the coil 2 comprises a primary winding and a secondary winding and is alternately wound on the annular magnetic core 3, and a smaller iron core can be used for arranging the coil 2 in a winding mode, so that the volume of the current transformer is reduced, the annular magnetic core 3 can be made of various known materials, preferably silicon steel sheets, the coil 2 can be wound on the annular magnetic core 3 more tightly, eight guide pins 4 are symmetrically arranged at the bottom of the housing 1, the projection surface is of an L-shaped structure, the vertical ends of the guide pins 4 are spliced in mounting holes at the edge of the square bottom of the housing 1, the horizontal ends extend towards the outer side of the housing 1, the input end and the output end of the primary winding and the input end and the output end of the secondary winding are respectively welded with corners of the guide pins 4, and each end is connected with the guide pins 4 on the outer side.
As shown in fig. 1 and 2, the housing 1 is a plastic box, but may be a box made of other insulating materials. The shell 1 is divided into two parts, the top is round for limiting the coil 2, and the top of the round shell 1 and the coil 2 are coaxially arranged, so that the epoxy resin layer 5 is conveniently poured. The bottom of the housing 1 is square, and the end face of the bottom is provided with four grooves 12 communicated with the mounting holes, and the end parts of the leads of the coil 2 can be connected into the mounting holes along the grooves 12 so as to be welded with the lead pins 4. One corner of the square surface of the bottom of the shell 1 is provided with a positioning block 11, the positioning block 11 is a cylindrical bulge, and the direction of the coil 2 of the current transformer can be distinguished through the positioning block 11.
As shown in fig. 1 and 2, after the coil 2, the annular magnetic core 3, the lead pin 4 and the shell 1 are assembled, the epoxy resin layer 5 is poured into the shell 1, and all the components are connected into a whole by solidification of the epoxy resin layer 5, so that the resistance to external impact and vibration can be increased, and meanwhile, corrosion and oxidation caused by environmental attack can be avoided, so that the service life of the current transformer is prolonged, and the practicability is improved.
In the embodiment of the utility model, preferably, the length of the shell 1 is 17mm, the width is 16mm, the height is 10.8mm, wherein the maximum distance between the pins 4 at two sides of the bottom of the shell 1 is 20.1m, the area of the bottom surface of the pins 4 is 0.4x0.6 mm, the distance between the pins 4 symmetrically arranged at the same side of the shell 1 is 2.54mm, and the distance between two rows is 17mm.
The working principle of the embodiment is as follows: according to the utility model, the annular magnetic core 3 and the coil 2 wound on the annular magnetic core 3 are arranged in the shell 1, the mounting holes are formed in the edge of the bottom of the shell 1, the end face of the bottom of the shell 1 is provided with the grooves 12 communicated with the mounting holes, the lead ends of the coil 2 are connected into the mounting holes along the grooves 12, the shell 1 is also provided with the lead pins 4 connected with the lead ends of the coil 2, the lead pins 4 are inserted into the mounting holes, and the shell 1 is internally filled with the epoxy resin layer 5 wrapping the annular magnetic core 3 and the coil 2, so that corrosion and oxidation caused by environmental invasion can be avoided; the integrity of the electronic device is enhanced, and the resistance to external impact and vibration can be increased, so that the service life of the current transformer is prolonged, and the practicability is improved.
The above examples are only preferred embodiments of the present utility model, and the scope of the present utility model is not limited thereto, but any insubstantial changes and modifications made by those skilled in the art based on the present utility model are included in the scope of the present utility model.
Claims (5)
1. The utility model provides a paster type current transformer, includes shell (1), sets up annular magnetic core (3) and winding and annular magnetic core (3) on coil (2), its characterized in that in shell (1): the novel coil winding device is characterized in that mounting holes are formed in the bottom edge of the housing (1), grooves (12) communicated with the mounting holes are formed in the end face of the bottom of the housing (1), the lead ends of the coils (2) are connected to the mounting holes along the grooves (12), the housing (1) is further provided with lead pins (4) connected with the lead ends of the coils (2), the lead pins (4) are inserted into the mounting holes, and epoxy resin layers (5) wrapping the annular magnetic cores (3) and the coils (2) are poured into the housing (1).
2. The patch-type current transformer of claim 1, wherein: the top of the shell (1) is round, and the top of the shell (1) and the annular magnetic core (3) are coaxially arranged.
3. The patch-type current transformer of claim 1, wherein: a positioning block (11) is arranged at one corner of the upper surface of the bottom of the shell (1).
4. The patch-type current transformer of claim 1, wherein: the projection surface of the guide pin (4) is of an L-shaped structure and comprises a vertical end and a horizontal end, the vertical end is inserted into the mounting hole, and the horizontal end extends towards the outer side of the shell (1).
5. A chip current transformer as claimed in claim 1, wherein: the coil (2) comprises a primary winding and a secondary winding, and the primary winding and the secondary winding are alternately wound on the annular magnetic core (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322144736.3U CN220627583U (en) | 2023-08-10 | 2023-08-10 | Patch type current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322144736.3U CN220627583U (en) | 2023-08-10 | 2023-08-10 | Patch type current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220627583U true CN220627583U (en) | 2024-03-19 |
Family
ID=90214924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322144736.3U Active CN220627583U (en) | 2023-08-10 | 2023-08-10 | Patch type current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220627583U (en) |
-
2023
- 2023-08-10 CN CN202322144736.3U patent/CN220627583U/en active Active
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