CN216209421U - Combined three-phase current transformer - Google Patents
Combined three-phase current transformer Download PDFInfo
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- CN216209421U CN216209421U CN202121860035.4U CN202121860035U CN216209421U CN 216209421 U CN216209421 U CN 216209421U CN 202121860035 U CN202121860035 U CN 202121860035U CN 216209421 U CN216209421 U CN 216209421U
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Abstract
The utility model discloses a combined three-phase current transformer, which comprises a shell, a transformer core and a transformer core, wherein the shell comprises an upper shell and a lower shell arranged at the bottom of the upper shell; each group of conducting elements comprises an annular iron core, a protective sleeve sleeved outside the annular iron core and a positioning sleeve sleeved outside the protective sleeve; fastening components includes the extension board, rotate the long screw of connection at the extension board top and the splint of sliding connection on the long screw, the conduction component is placed in the casing, the dismouting block that upper casing and inferior valve can carry out freedom makes mutual-inductor monomer conduction component is more convenient, when the mutual-inductor takes place the short circuit and arouses the tripping operation, only need not become flexible take off the upper casing from the inferior valve, change one of them set of conduction component in the casing inner chamber, do not need wholly to demolish the mutual-inductor from the electric wire, fastening components's setting can be fixed the mutual-inductor on the electric wire, prevent that the mutual-inductor from taking place the position and remove and cause the unsafe problem of detection data.
Description
Technical Field
The utility model relates to the technical field of transformers, in particular to a combined three-phase current transformer.
Background
The current transformer is the instrument that converts the heavy current of once side into the secondary side undercurrent and come the measurement according to the electromagnetic induction principle, in present current system, for the convenience of measuring, protection and control need convert into more unified electric current, current transformer has just played the effect of current conversion and electrical isolation, current transformer most of is single current transformer, though simple structure, small size, but need carry out the whole change when single current transformer breaks down, cause the problem of wasting of resources, consequently, a modular three phase current transformer has been designed.
SUMMERY OF THE UTILITY MODEL
This section is for the purpose of summarizing some aspects of embodiments of the utility model and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the abstract of the specification and the title of the application to avoid obscuring the purpose of this section, the abstract of the specification and the title of the application, and such simplifications or omissions are not intended to limit the scope of the utility model.
The present invention has been made in view of the above-mentioned problems of the conventional current transformers.
Therefore, the utility model aims to provide a combined three-phase current transformer, which can be freely disassembled and assembled, and solves the problem of resource waste caused by the fact that a single current transformer needs to be integrally replaced when a fault occurs.
In order to solve the technical problems, the utility model provides the following technical scheme: the utility model provides a modular three-phase current transformer which characterized in that: comprises a shell, a shell body and a cover, wherein the shell body comprises an upper shell and a lower shell arranged at the bottom of the upper shell;
each group of conducting elements comprises an annular iron core, a protective sleeve sleeved outside the annular iron core and a positioning sleeve sleeved outside the protective sleeve, and the conducting elements are arranged in the inner cavity of the shell;
the fastening assembly comprises a support plate, a long screw rotatably connected to the top of the support plate and a clamping plate slidably connected to the long screw, and is connected to the side wall of the bottom of the lower shell.
As a preferred scheme of the combined three-phase current transformer of the present invention, wherein: the annular iron core in one group of conducting elements is made of permalloy, and the annular iron core in the other group of conducting elements is made of silicon steel.
As a preferred scheme of the combined three-phase current transformer of the present invention, wherein: the top of the inner cavity of the upper shell is provided with two baffles, the bottom of the inner cavity of the lower shell is provided with a partition plate, and the two baffles are symmetrically arranged on two sides of the partition plate.
As a preferred scheme of the combined three-phase current transformer of the present invention, wherein: the bottom of epitheca is provided with first connecting plate, the top of inferior valve is provided with the second connecting plate, first connecting plate can link together with the second connecting plate.
As a preferred scheme of the combined three-phase current transformer of the present invention, wherein: the bottom of the first connecting plate is provided with a first groove, the top of the second connecting plate is provided with a first protrusion, and the first protrusion can be inserted into the first groove in a sliding mode.
As a preferred scheme of the combined three-phase current transformer of the present invention, wherein: the first connecting plate and the second connecting plate are connected with two first fixing pieces and two second fixing pieces, and one first fixing piece and one second fixing piece form a group.
As a preferred scheme of the combined three-phase current transformer of the present invention, wherein: the bottom of the inner cavity of the lower shell is provided with two supporting plates which are arranged on two sides of the partition plate.
As a preferred scheme of the combined three-phase current transformer of the present invention, wherein: the bottom side of inferior valve is provided with the second arch, set up first screw hole on the arch.
As a preferred scheme of the combined three-phase current transformer of the present invention, wherein: the fastening assembly is connected to the second protrusion, a through groove is formed in the side wall of the support plate, a short screw is arranged in the through groove, and the short screw is connected with a first threaded hole in the second protrusion in a threaded fit mode.
As a preferred scheme of the combined three-phase current transformer of the present invention, wherein: the top end of the support plate is provided with a second threaded hole, the long screw is rotatably connected in the second threaded hole, one end, far away from the support plate, of the long screw is connected with a clamping plate in a sliding mode, and a groove is formed in the bottom, close to the clamping plate, of the clamping plate.
The utility model has the beneficial effects that: the utility model discloses a combined three-phase current transformer, wherein two groups of conducting elements are placed in a shell, an upper shell and a lower shell can be freely assembled and disassembled to enable the conducting elements of a transformer monomer to be more conveniently assembled and disassembled, when the transformer is tripped due to short circuit, the upper shell is only required to be loosened and taken down from the lower shell, one group of conducting elements in the inner cavity of the shell is replaced, the transformer does not need to be integrally disassembled from an electric wire, the transformer can be fixed on the electric wire through the arrangement of a fastening assembly, and the problem of inaccurate detection data caused by the position movement of the transformer is solved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments 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 it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise. Wherein:
fig. 1 is a schematic view of the overall structure of the combined three-phase current transformer of the present invention.
Fig. 2 is a half-section schematic diagram of the combined three-phase current transformer of the utility model.
Fig. 3 is an exploded view of the combined three-phase current transformer of the present invention.
In the figure: the magnetic core comprises a shell 100, an upper shell 101, a lower shell 102, a conducting element 200, an annular iron core 201, a protective sleeve 202, a positioning sleeve 203, a fastening assembly 300, a support plate 301, a long screw 302, a clamping plate 303, a baffle plate 101a, a partition plate 102a, a first connecting plate 101b, a second connecting plate 102b, a first groove 101c, a first protrusion 102c, a first fixing piece 400, a second fixing piece 500, a support plate 102d, a protrusion 102e, a first threaded hole 102f, a through groove 301a, a short screw 301b, a second threaded hole 301c and a second groove 303 a.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Furthermore, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one implementation of the utility model. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
Furthermore, the present invention is described in detail with reference to the drawings, and in the detailed description of the embodiments of the present invention, the cross-sectional view illustrating the structure of the device is not enlarged partially according to the general scale for convenience of illustration, and the drawings are only exemplary and should not be construed as limiting the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.
Referring to fig. 1 to 3, there is provided a combined three-phase current transformer according to an embodiment of the present invention, which includes a case 100, two sets of conductive members 200 disposed in an inner cavity of the case 100, and a fastening assembly 300 attached to a sidewall of the case 100.
The housing 100 includes an upper case 101 and a lower case 102 mounted at the bottom of the upper case 101.
Each set of conducting elements 200 comprises an annular core 201, a protective sleeve 202 fitted over the annular core 201, and a positioning sleeve 203 fitted over the protective sleeve 202.
The top of the inner cavity of the upper shell 101 is provided with two baffles 101a, the bottom of the inner cavity of the lower shell 102 is provided with a partition 102a, the two baffles 101a are symmetrically arranged at two sides of the partition 102a, the partition 102a is arranged at the center of the bottom of the lower shell 102 to divide the shell 100 into two inner cavities, a group of conducting elements 200 are arranged in the two inner cavities of the shell 100, one voltage unit and one current unit in a single conducting element 200 are assembled together through combination, wherein the annular iron core 201 in one group of conducting elements (200) is made of permalloy, and the annular iron core 201 in the other group of conducting elements (200) is made of silicon steel.
The bottom of the upper shell 101 is provided with a first connecting plate 101b, the top of the lower shell 102 is provided with a second connecting plate 102b, the first connecting plate 101b and the second connecting plate 102b are connected with two first fixing pieces 400 and two second fixing pieces 500, one first fixing piece 400 and one second fixing piece 500 form a group, and the first connecting plate 101b and the second connecting plate 102b can be connected together through the first fixing piece 400 and the second fixing piece 500 to encapsulate the shell 100.
The bottom of the first connecting plate 101b is provided with a first groove 101c, the top of the second connecting plate 102b is provided with a first protrusion 102c, and the first protrusion 102c can be slidably inserted into the first groove 101c, so that rainwater can be prevented from entering the inside of the housing 100.
The bottom of the inner cavity of the lower shell 102 is provided with two sets of supporting plates 102d, the two sets of supporting plates 102d are arranged on two sides of the partition plate 102a, the supporting plates 102d on one side of the partition plate 102a are arranged side by side, when the conduction element 200 is placed in the shell 100, the bottom of the conduction element 200 is in contact with one end, far away from the bottom of the lower shell 102, of the supporting plate 102d, the conduction element 200 is prevented from being in direct contact with the shell 100, abrasion on the conduction element 200 can be reduced, and heat generated during the work of the emission transformer can be accelerated.
The bottom side end of the lower shell 102 is provided with a second protrusion 102e, the second protrusion 102e is provided with a first threaded hole 102f, and the second protrusion 102e is connected with a fastening assembly 300.
The fastening assembly 300 includes a plate 301, a long screw 302 pivotally attached to the top of the plate 301, and a clamp plate 303 slidably attached to the long screw 302.
The support plate 301 is an L-shaped plate, a through groove 301a is formed in the side wall of the support plate 301, a short screw 301b is arranged in the through groove 301a, the short screw 301b is connected with a first threaded hole 102f in a second boss 102e in a threaded fit manner, the support plate 301 is mounted on the second boss 102e in the side wall of the lower shell 102, and the short screw 301b can slide up and down in the through groove 301a to adjust the mounting height of the fastening assembly 300.
The use process comprises the following steps: firstly, placing the conducting element 200 in the inner cavity of the lower shell 102, then inserting two second fixing pieces 500 into holes of the second connecting plate 102b, placing the lower shell 102 below the electric wire, then sleeving the upper shell 101 on the electric wire to cover the lower shell 102, inserting a first protrusion 102c on the second connecting plate 102b into a first groove 101c at the bottom of the first connecting plate 101b, inserting the second fixing piece 500 inserted into the hole of the second connecting plate 102b into the hole of the first connecting plate 101b at the moment, preliminarily fixing the positions of the upper shell 101 and the lower shell 102, then rotating the first fixing piece 400 to be inserted into the connecting holes of the first connecting plate 101b and the second connecting plate 102b, and fixing the upper shell 101 and the lower shell 102 together; then, the support plate 301 is fixedly connected to a second bulge 102e at the bottom side end of the lower shell 102 through a short screw 301b, then a second groove 303a on the clamping plate 303 is sleeved on the electric wire, then a long screw 302 penetrates through a through hole of the clamping plate 303 and is rotatably connected to a second threaded hole 301c at the top end of the support plate 301, then the long screw 302 is rotated to drive the clamping plate 303 to approach the support plate 301 so as to extrude the electric wire to be clamped in the second groove 303a to fix the position of the transformer, and the transformer is prevented from moving; when the mutual inductor is tripped due to short circuit, only the first fixing piece 400 needs to be loosened, then the upper shell 101 is taken down from the lower shell 102, one group of conducting elements 200 in the inner cavity of the shell 100 is replaced, and the mutual inductor does not need to be integrally detached from an electric wire.
It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (10)
1. The utility model provides a modular three-phase current transformer which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
a housing (100) including an upper case (101) and a lower case (102) mounted at the bottom of the upper case (101);
two groups of conducting elements (200), wherein each group of conducting elements (200) comprises an annular iron core (201), a protective sleeve (202) sleeved outside the annular iron core (201) and a positioning sleeve (203) sleeved outside the protective sleeve (202), and the conducting elements (200) are arranged in the inner cavity of the shell (100);
the fastening assembly (300) comprises a support plate (301), a long screw (302) rotatably connected to the top of the support plate (301), and a clamping plate (303) slidably connected to the long screw (302), and the fastening assembly (300) is connected to the side wall of the bottom of the lower shell (102).
2. The combined three-phase current transformer of claim 1, wherein: the annular iron core (201) in one group of the conductive elements (200) is made of permalloy, and the annular iron core (201) in the other group of the conductive elements (200) is made of silicon steel.
3. The combined three-phase current transformer of claim 2, wherein: two baffles (101a) are arranged at the top of the inner cavity of the upper shell (101), a partition plate (102a) is arranged at the bottom of the inner cavity of the lower shell (102), and the two baffles (101a) are symmetrically arranged on two sides of the partition plate (102 a).
4. The combined three-phase current transformer of claim 3, wherein: the bottom of the upper shell (101) is provided with a first connecting plate (101b), the top of the lower shell (102) is provided with a second connecting plate (102b), and the first connecting plate (101b) and the second connecting plate (102b) can be connected together.
5. The combined three-phase current transformer of claim 4, wherein: the bottom of the first connecting plate (101b) is provided with a first groove (101c), the top of the second connecting plate (102b) is provided with a first protrusion (102c), and the first protrusion (102c) can be inserted into the first groove (101c) in a sliding mode.
6. The combined three-phase current transformer of claim 5, wherein: the first connecting plate (101b) and the second connecting plate (102b) are connected with two first fixing pieces (400) and two second fixing pieces (500), wherein one first fixing piece (400) and one second fixing piece (500) form a group.
7. The combined three-phase current transformer of claim 3, wherein: two supporting plates (102d) are arranged at the bottom of the inner cavity of the lower shell (102), and the two supporting plates (102d) are arranged on two sides of the partition plate (102 a).
8. The combined three-phase current transformer of claim 7, wherein: the bottom side end of the lower shell (102) is provided with a second bulge (102e), and a first threaded hole (102f) is formed in the bulge (102 e).
9. The combined three-phase current transformer of claim 8, wherein: the fastening assembly (300) is connected to the second protrusion (102e), a through groove (301a) is formed in the side wall of the support plate (301), a short screw (301b) is arranged in the through groove (301a), and the short screw (301b) is connected with a first threaded hole (102f) in the second protrusion (102e) in a threaded fit mode.
10. The combined three-phase current transformer of claim 9, wherein: the top end of the support plate (301) is provided with a second threaded hole (301c), the long screw (302) is rotatably connected in the second threaded hole (301c), one end, far away from the support plate (301), of the long screw (302) is connected with a clamping plate (303) in a sliding mode, and a second groove (303a) is formed in the bottom, close to the clamping plate (303), of the clamping plate (303).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121860035.4U CN216209421U (en) | 2021-08-10 | 2021-08-10 | Combined three-phase current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121860035.4U CN216209421U (en) | 2021-08-10 | 2021-08-10 | Combined three-phase current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216209421U true CN216209421U (en) | 2022-04-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121860035.4U Active CN216209421U (en) | 2021-08-10 | 2021-08-10 | Combined three-phase current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216209421U (en) |
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2021
- 2021-08-10 CN CN202121860035.4U patent/CN216209421U/en active Active
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