CN218585744U - Totally-enclosed current transformer - Google Patents
Totally-enclosed current transformer Download PDFInfo
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- CN218585744U CN218585744U CN202222574681.5U CN202222574681U CN218585744U CN 218585744 U CN218585744 U CN 218585744U CN 202222574681 U CN202222574681 U CN 202222574681U CN 218585744 U CN218585744 U CN 218585744U
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Abstract
The utility model discloses a totally closed current transformer belongs to the current transformer field, and it includes: the current transformer assembly comprises a mounting shell and a mounting end cover matched with the mounting shell, wherein a current transformer assembly is mounted in the mounting shell; the four corners of the front surface of the mounting shell are provided with threaded mounting holes, and the two sides of the mounting shell are provided with clamping components; wherein, the position of four corners of installation end cover and corresponding four screw thread mounting holes all is provided with the mounting bolt that matches with screw thread mounting hole, and the joint subassembly includes the slip kelly of sliding connection on the installation shell, the tip fixedly connected with operation block of slip kelly. The utility model discloses a cooperation between installation shell, installation end cover and the current transformer subassembly, realized a totally closed current transformer, adopt the mode of joint, easily carry out the dismouting to current transformer, consequently when current transformer appears damaging, conveniently maintain it, thereby improved the utility model discloses current transformer's practicality.
Description
Technical Field
The utility model belongs to the technical field of current transformer, particularly, relate to a totally closed current transformer.
Background
The current transformer is an instrument for measuring by converting a large primary side current into a small secondary side current according to the electromagnetic induction principle. The similar current transformer products are mostly of a semi-closed structure, and the semi-closed current transformer is produced by the fact that an iron core leaks outside, a semi-conductor paint is coated, magnetic leakage is large, partial discharge does not reach the standard, the service life of the product is greatly shortened, and therefore the totally-closed current transformer is produced.
For example, patent document No. CN201859769U discloses a totally-enclosed current transformer, in which a P1 terminal of the totally-enclosed current transformer is welded with a U-shaped transition plate to connect a primary coil, and the primary coil passes through a secondary coil and is welded on a P2 terminal after the number of turns of the primary coil meets the number of turns of the core; the three secondary coils are arranged in a delta shape, wherein the right secondary coil and the left secondary coil are horizontally arranged, and the lower secondary coil, the right secondary coil and the left secondary coil are vertically arranged; the secondary coil is formed by uniformly winding an enameled wire on an iron core, outgoing wires of the secondary coil are respectively welded on the embedded part according to the polarity, and secondary outgoing wire terminal identification is determined according to the number of windings and the transformation ratio condition; and epoxy resin is poured into the current transformer at one time. The current transformer is designed to be fully enclosed, so that the defect of semi-enclosure is overcome, and the service life of the current transformer is greatly prolonged;
however, the current transformer in the technical scheme is formed by pouring epoxy resin, so that a whole is formed, when the current transformer needs to be maintained, the integrity of the epoxy resin needs to be damaged, the damage is irreversible, the epoxy resin needs to be poured again after the maintenance is completed, and the steps are complicated.
SUMMERY OF THE UTILITY MODEL
The totally closed current transformer to prior art existence maintains inconvenient problem, the utility model provides a totally closed current transformer convenient to maintain.
In order to realize the technical purpose, the utility model discloses a technical scheme as follows:
a totally-enclosed current transformer comprises a mounting shell and a mounting end cover matched with the mounting shell, wherein a current transformer assembly is further mounted inside the mounting shell;
the four corners of the front surface of the mounting shell are provided with threaded mounting holes, and the two sides of the mounting shell are provided with clamping components;
and mounting bolts matched with the threaded mounting holes are arranged at the four corners of the mounting end cover and correspond to the four threaded mounting holes.
Adopt above-mentioned technical scheme's totally closed current transformer mainly comprises installation shell, installation end cover, current transformer subassembly, joint subassembly and construction bolt, adopts the mounting means of joint, easily carries out the dismouting to current transformer, consequently when current transformer appears damaging, conveniently maintains it, thereby has improved the utility model discloses current transformer's practicality.
Further, the joint subassembly includes sliding connection and is in slip kelly on the installation shell, the tip fixedly connected with operation piece of slip kelly is located the operation piece and between the installation shell the cover is equipped with the cover spring on the slip kelly.
Further, the current transformer subassembly includes cyclic annular iron core, the equal fixedly connected with installation ear in cyclic annular iron core's both sides, the installation ear is kept away from one side of cyclic annular iron core seted up with slip kelly assorted card hole, the winding has set gradually a side winding and secondary side winding on the cyclic annular iron core, side winding's tip fixedly connected with side terminal once, secondary side winding's tip fixedly connected with secondary side terminal.
Further, the top and the bottom of installation shell and installation end cover just correspond terminal storage tank has all been seted up to the position of once side terminal and secondary side terminal.
Furthermore, one side of the operation block, which is far away from the sliding clamping rod, is fixedly connected with an operation handle.
Furthermore, set up the spacing hole that the symmetry set up on the installation ear, on the inner wall of installation shell and corresponding the position fixedly connected with in spacing hole with spacing hole assorted spacing post.
Further, the end of the limiting column is designed to be arc-shaped, and the limiting column is connected with the inner wall of the limiting hole in a sliding mode.
Compared with the prior art, the utility model, following beneficial effect has:
the utility model discloses a cooperation between installation shell, installation end cover and the current transformer subassembly has realized a totally closed current transformer, adopts the mode of joint, easily carries out the dismouting to current transformer, consequently when current transformer appears damaging, conveniently maintains it, thereby has improved the utility model discloses current transformer's practicality.
Drawings
FIG. 1 is a schematic view of the three-dimensional structure of the totally enclosed current transformer of the present invention;
FIG. 2 is a schematic view of the sectional structure of the totally-enclosed current transformer of the present invention;
FIG. 3 is a schematic structural view of the mounting case in the totally enclosed current transformer of the present invention;
fig. 4 is a schematic view of a part a of the present invention shown in fig. 3;
FIG. 5 is a schematic structural view of the mounting end cap in the totally enclosed current transformer of the present invention;
fig. 6 is the structure schematic diagram of the current transformer assembly in the totally-enclosed current transformer of the utility model.
The notation in the figure is:
1-mounting a housing; 2, mounting an end cover; 3-a current transformer assembly;
101-a threaded mounting hole; 102-a clamping assembly;
1021-sliding catch bar; 1022 — an operation block; 1023-a coil spring;
201-mounting bolts;
301-toroidal core; 302-mounting ears; 10211-card hole; 303-primary side winding; 304-primary side terminal; 305-secondary side winding; 306-secondary side terminals;
3021-a limiting hole; 3022-a limiting column; 3041-terminal receiving groove.
Detailed Description
In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention.
As shown in fig. 1 to 6, the present embodiment provides a totally enclosed current transformer, which includes a mounting shell 1 and a mounting end cover 2 matched with the mounting shell 1, wherein a current transformer assembly 3 is installed inside the mounting shell 1.
Threaded mounting hole 101 has all been seted up to the positive four corners of installing shell 1, and the both sides of installing shell 1 all are provided with joint subassembly 102.
The four corners of the mounting end cover 2 and the positions corresponding to the four threaded mounting holes 101 are provided with mounting bolts 201 matched with the threaded mounting holes 101.
The clamping assembly 102 includes a sliding rod 1021 slidably connected to the mounting housing 1, an operation block 1022 is fixedly connected to an end of the sliding rod 1021, and a spring 1023 is sleeved on the sliding rod 1021 between the operation block 1022 and the mounting housing 1.
The current transformer assembly 3 comprises an annular iron core 301, mounting lugs 302 are fixedly connected to two sides of the annular iron core 301, a clamping hole 10211 matched with the sliding clamping rod 1021 is formed in one side, away from the annular iron core 301, of each mounting lug 302, a primary side winding 303 and a secondary side winding 305 are sequentially wound on the annular iron core 301, a primary side terminal 304 is fixedly connected to the end portion of the primary side winding 303, and a secondary side terminal 306 is fixedly connected to the end portion of the secondary side winding 305.
The totally-enclosed current transformer adopts the clamping installation mode, and is easy to disassemble and assemble, so that the current transformer is convenient to maintain when being damaged, and the practicability of the current transformer is improved.
The top and bottom of the mounting housing 1 and the mounting end cap 2 are provided with terminal receiving grooves 3041 corresponding to the positions of the primary terminal 304 and the secondary terminal 306, and the terminal receiving grooves 3041 are used for receiving the primary terminal 304 and the secondary terminal 306.
Wherein, one side fixedly connected with operation handle that slip card pole 1021 was kept away from to operation piece 1022, the operation handle of setting conveniently pulls operation piece 1022 to the stability and the neatness of the convenient current transformer subassembly 3 installation of current transformer subassembly 3 dismouting have been improved.
In order to increase the stability of the current transformer assembly 3 in installation and installation of the housing 1, the mounting lug 302 is provided with symmetrically arranged limiting holes 3021, the inner wall of the installation housing 1 corresponding to the limiting holes 3021 is fixedly connected with limiting posts 3022 matched with the limiting holes 3021, the end portions of the limiting posts 3022 are arc-shaped, and the limiting posts 3022 are slidably connected with the inner walls of the limiting holes 3021; the mounting lug 302 is limited by the mutual matching of the limiting column 3022 and the limiting hole 3021, so that the stability of the current transformer assembly 3 in the mounting and mounting shell 1 is improved.
The working principle is as follows: when the current transformer assembly 3 needs to be disassembled and maintained, only the mounting bolt 201 needs to be loosened, so that the mounting end cover 2 can be conveniently taken down, then the operating block 1024 is pulled through the operating handle, so that the sliding clamping rod 1021 can be driven to move, the sliding clamping rod 1021 is separated from the clamping hole 10211, the current transformer assembly 3 can be conveniently taken down, and the current transformer assembly 3 is conveniently maintained; after the maintenance is completed, the mounting lug 302 at the two sides of the current transformer assembly 3 is placed into the mounting shell 1, the limiting hole 3021 is clamped into the limiting post 3022, then the sliding clamping rod 1021 is driven to be clamped into the clamping hole 10211 under the elastic action of the sleeve spring 1023, and convenient mounting of the current transformer assembly 3 is achieved.
The fully-enclosed current transformer provided by the application is described in detail above. The description of the specific embodiments is only intended to facilitate an understanding of the methods of the present application and their core concepts. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.
Claims (7)
1. A totally enclosed current transformer, comprising:
a mounting housing (1) within which a current transformer assembly (3) is mounted, and
with installation end cover (2) of installation shell (1) assorted, wherein:
threaded mounting holes (101) are formed in four corners of the front face of the mounting shell (1), and clamping components (102) are arranged on two sides of the mounting shell (1);
four corners of installation end cover (2) and correspond four the position of screw thread mounting hole (101) all be provided with screw thread mounting hole (101) assorted mounting bolt (201).
2. A totally enclosed current transformer according to claim 1, characterized in that: joint subassembly (102) include sliding connection and are in slip card pole (1021) on installation shell (1), the tip fixedly connected with operation piece (1022) of slip card pole (1021), be located operation piece (1022) and between installation shell (1) the cover is equipped with set spring (1023) on slip card pole (1021).
3. A totally enclosed current transformer according to claim 2, characterized in that: the current transformer assembly (3) comprises an annular iron core (301), mounting lugs (302) are fixedly connected to two sides of the annular iron core (301), one side, far away from the annular iron core (301), of each mounting lug (302) is provided with a clamping hole (10211) matched with the sliding clamping rod (1021), a primary winding (303) and a secondary winding (305) are sequentially wound on the annular iron core (301), a primary side terminal (304) is fixedly connected to the end portion of the primary side winding (303), and a secondary side terminal (306) is fixedly connected to the end portion of the secondary side winding (305).
4. A totally enclosed current transformer according to claim 3, characterised in that: terminal accommodating grooves (3041) are formed in the top and the bottom of the mounting shell (1) and the mounting end cover (2) and correspond to the positions of the primary side terminal (304) and the secondary side terminal (306).
5. A totally enclosed current transformer according to claim 2, characterised in that: an operating handle is fixedly connected to one side, far away from the sliding clamping rod (1021), of the operating block (1022).
6. A totally enclosed current transformer according to claim 3, characterized in that: the installation shell is characterized in that limiting holes (3021) symmetrically arranged are formed in the installation lugs (302), and the inner wall of the installation shell (1) corresponds to the position of each limiting hole (3021) and is fixedly connected with limiting columns (3022) matched with the limiting holes (3021).
7. A totally enclosed current transformer according to claim 6, characterized in that: the end part of the limiting column (3022) is designed in an arc shape, and the limiting column (3022) is connected with the inner wall of the limiting hole (3021) in a sliding manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222574681.5U CN218585744U (en) | 2022-09-28 | 2022-09-28 | Totally-enclosed current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222574681.5U CN218585744U (en) | 2022-09-28 | 2022-09-28 | Totally-enclosed current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218585744U true CN218585744U (en) | 2023-03-07 |
Family
ID=85367864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222574681.5U Active CN218585744U (en) | 2022-09-28 | 2022-09-28 | Totally-enclosed current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218585744U (en) |
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2022
- 2022-09-28 CN CN202222574681.5U patent/CN218585744U/en active Active
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