Nanometer magnetic core of precise current transformer

Abstract

The utility model relates to the technical field of nanometer magnetic cores, in particular to a nanometer magnetic core of a precise current transformer, which comprises a packaging lower shell, positioning rods distributed in an array mode are fixedly connected to the upper side of the packaging lower shell, jacking columns are connected to the upper side of the packaging lower shell in an array mode, and a packaging upper shell is connected to the upper sides of the positioning rods and the jacking columns in a clamping mode. According to the nanometer magnetic core, the positioning rod, the top column and the two movable connecting plates can be connected with the packaging upper shell together, in this way, the nanometer magnetic core can be packaged and fixed by the packaging lower shell and the packaging upper shell together in a clamping mode, and the nanometer magnetic core can be conveniently disassembled to be replaced; the dismounting and replacing efficiency of the nanometer magnetic core is improved, the disc is moved and adjusted through rotation of the screw rod and used for positioning and clamping the nanometer magnetic core, then the limiting circular plate and the movable pressing plate with elasticity can elastically clamp the nanometer magnetic core together, the nanometer magnetic core is firmer, and the stability of the nanometer magnetic core is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of nano-magnetic cores, in particular to a nano-magnetic core of a precision current transformer. Background Art

[0002] The nano-core current transformer is mainly composed of a main coil, a secondary coil and a nano-crystalline core. The main coil is the coil for measuring the current passing through, the secondary coil is the coil for measuring the induced electromotive force, and the nano-crystalline core plays the role of amplifying the electromagnetic induction signal.

[0003] The prior art discloses patent application number "CN202322783402.0", which is a nanocrystalline magnetic core of a current transformer, including a magnetic core body, a positioning leg provided on the outside of the magnetic core body, an installation notch provided on the positioning leg, and a packaging mechanism wrapped around the magnetic core body. Screws can be connected to the docking holes on the first docking seat and the second docking seat to fix the first sealing shell and the second sealing shell on the magnetic core body.

[0004] The nanocrystalline magnetic core can only be fixed to the magnetic core by screws using two sealing shells. In actual use, the nanomagnetic core as mentioned above is usually packaged and fixed with screws, which makes the removal of the nanomagnetic core cumbersome and time-consuming, resulting in the inability to conveniently disassemble and replace the nanomagnetic core, thereby affecting the efficiency of disassembly, assembly and replacement of the nanomagnetic core and making it inconvenient to use. Utility Model Content

[0005] The purpose of the present utility model is to provide a nano-magnetic core for a precision current transformer to solve the problems raised in the above background technology.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A nanomagnetic core for a precision current transformer includes a package lower shell, an array of positioning rods fixedly connected to the upper side of the package lower shell, a top column connected to the upper side of the package lower shell, an upper package shell clamped to the upper sides of the positioning rods and the top column, a nanomagnetic core body fixedly disposed inside the package lower shell, and a second L-shaped side plate installed at both ends of the package lower shell;

[0008] A first L-shaped side panel is installed at both ends of the package upper shell, and a movable connecting plate is rotatably connected to the inside of the two second L-shaped side panels. The movable connecting plate is located inside the first L-shaped side panel, and both ends of the two movable connecting plates are slidably connected to movable clamping rods for fixing the movable connecting plates. A No. 1 connecting spring is connected between the four movable clamping rods and the movable connecting plates, and an array of heat dissipation holes are provided inside the package lower shell and the package upper shell.

[0009] Preferably, the top array inside the upper shell of the package is connected to a No. 2 connecting spring, and a limiting circular plate for fixing the nanomagnetic core body is installed on the lower side of the No. 2 connecting spring. The internal thread of the lower shell of the package is connected to an array of screws, and the inner side of the screw is installed with a disk for fixing the nanomagnetic core body.

[0010] Preferably, the interior of the package upper shell is fixedly connected to the array-distributed vertical rods, the outer surface of the vertical rods is slidably connected to a movable pressure plate for fixing the nano-magnetic core body, and a No. 3 connecting spring is fixedly connected between the movable pressure plate and the package upper shell.

[0011] Preferably, two mounting seats are fixedly mounted on the inner side surfaces of the packaging lower shell and the packaging upper shell, and the inner side surfaces of the two mounting seats are clamped with support inserts, and both ends of the support inserts are connected to two embedded circular pads.

[0012] Preferably, two embedded card slots are provided inside the two first L-shaped side panels, the embedded card slots are adapted to the movable card rod, and the outer surface of the movable card rod is slidably engaged with the interior of the first L-shaped side panel through the embedded card slots.

[0013] Preferably, two grooves are provided on the inner side surfaces of the four mounting seats, the grooves are adapted to the embedded circular pads, and one side of the embedded circular pads is snap-connected to the inner side surface of the mounting seats through the grooves.

[0014] Beneficial effects of the utility model:

[0015] 1. The utility model can connect the package upper shell together by using the positioning rod, the top column and the two movable connecting plates. In this way, the package lower shell and the package upper shell can be used to encapsulate and fix the nano-magnetic core together by means of a snap connection, which is conducive to conveniently disassembling and replacing the nano-magnetic core, thereby improving the efficiency of disassembling and replacing the nano-magnetic core;

[0016] 2. The utility model allows the disc to move and adjust by rotating the screw, which is used to position and clamp the nano-magnetic core. Then the elastic limiting circular plate and the movable pressure plate can elastically clamp the nano-magnetic core together, making the nano-magnetic core more stable and firm, preventing the nano-magnetic core from loosening, and improving the stability of the nano-magnetic core. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, it is possible for a person skilled in the art to derive other drawings based on these drawings without inventive effort.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This utility model Figure 1 Enlarged view of point A in the middle;

[0020] Figure 3 This utility model Figure 1 Installation diagram of the middle positioning rod and top column;

[0021] Figure 4 This utility model Figure 1 Schematic diagram of the structure of the middle package lower shell and the package upper shell;

[0022] Figure 5 This utility model Figure 4 Enlarged view of point B in the middle;

[0023] Figure 6 This utility model Figure 1 Schematic diagram of the structure of the middle mounting seat and groove;

[0024] Figure 7 This utility model Figure 1 Installation diagram of the middle No. 2 connecting spring and the limiting circular plate;

[0025] Figure 8 This utility model Figure 1 Installation diagram of the middle disc and movable pressure plate;

[0026] The reference numerals in the figures are as follows:

[0027] 1. Package lower shell; 2. Nano-magnetic core body; 3. Positioning rod; 4. Top column; 5. Package upper shell; 6. First L-shaped side panel; 7. Second L-shaped side panel; 8. Active connecting plate; 9. Active latching rod; 10. No. 1 connecting spring; 11. Heat dissipation hole; 12. Mounting seat; 13. Support plug-in plate; 14. Embedded circular pad; 15. No. 2 connecting spring; 16. Limiting circular plate; 17. Screw; 18. Disc; 19. Vertical rod; 20. Active pressure plate; 21. No. 3 connecting spring; 111. Embedded slot; 222. Groove. DETAILED DESCRIPTION

[0028] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] like Figures 1 to 8As shown, a nanomagnetic core of a precision current transformer includes a packaging lower shell 1, an array of positioning rods 3 is fixedly connected to the upper side of the packaging lower shell 1, a top column 4 is connected to the upper side of the packaging lower shell 1 in an array, and a packaging upper shell 5 is clamped on the upper sides of the positioning rods 3 and the top column 4. By installing and using the positioning rods 3 and the top column 4, the two can be used to preliminarily clamp and fix the packaging upper shell 5, so that the packaging lower shell 1 and the packaging upper shell 5 encapsulate the nanomagnetic core of the precision current transformer. A nanomagnetic core body 2 is fixed inside the packaging lower shell 1. The nanomagnetic core of the precision current transformer is mainly used in power transmission, smart meters, leakage protection switches, etc., and a second L-shaped side plate 7 is installed at both ends of the packaging lower shell 1.

[0030] Both ends of the package upper shell 5 are installed with a first L-shaped side panel 6, and the interiors of the two second L-shaped side panels 7 are rotatably connected with a movable connecting plate 8, and the movable connecting plate 8 is located inside the first L-shaped side panel 6. Both ends of the two movable connecting plates 8 are slidably connected with an movable clamping rod 9 for fixing the movable connecting plate 8, and a No. 1 connecting spring 10 is connected between the four movable clamping rods 9 and the movable connecting plate 8. Through the setting of the movable clamping rod 9, the two elastic movable clamping rods 9 are compressed, so that the limit of the movable connecting plate 8 can be released, so that the package upper shell 5 can be disassembled and assembled. The operation is simple and convenient, and it is easy to use. The interiors of the package lower shell 1 and the package upper shell 5 are provided with an array of heat dissipation holes 11. The heat dissipation holes 11 can be used to dissipate heat, take away the heat of the nanomagnetic core, and protect the nanomagnetic core.

[0031] The top array inside the package upper shell 5 is connected to the No. 2 connecting spring 15, and the lower side of the No. 2 connecting spring 15 is installed with a limiting circular plate 16 for fixing the nanomagnetic core body 2. The internal thread of the package lower shell 1 is connected to the array-distributed screws 17, and the inner side of the screw 17 is installed with a disk 18 for fixing the nanomagnetic core body 2.

[0032] The interior of the package upper shell 5 is fixedly connected to an array of vertical rods 19, and the outer surface of the vertical rod 19 is slidably connected to a movable pressure plate 20 for fixing the nanomagnetic core body 2. Through the installation and use of the movable pressure plate 20, the elastic movable pressure plate 20 can be moved on the vertical rod 19 to position nanomagnetic cores of different thicknesses. It has good applicability and is easy to use. A No. 3 connecting spring 21 is fixedly connected between the movable pressure plate 20 and the package upper shell 5.

[0033] Two mounting seats 12 are fixedly installed on the inner sides of the packaging lower shell 1 and the packaging upper shell 5, and the inner sides of the two mounting seats 12 are clamped with support plug-ins 13. Two ends of the support plug-ins 13 are connected to two embedded circular pads 14. Through the installation and use of the support plug-ins 13 and the embedded circular pads 14, the support plug-ins 13 can be clamped into the mounting seats 12 by using the embedded circular pads 14, which are used to support and reinforce the packaging lower shell 1 and the packaging upper shell 5, thereby improving the strength of the packaging lower shell 1 and the packaging upper shell 5.

[0034] Two embedded slots 111 are provided inside the two first L-shaped side panels 6 . The embedded slots 111 match the movable clamping rod 9 . The outer surface of the movable clamping rod 9 is slidably engaged with the interior of the first L-shaped side panels 6 through the embedded slots 111 .

[0035] Two grooves 222 are formed on the inner side surfaces of the four mounting seats 12 . The grooves 222 are adapted to fit the embedded circular pads 14 . One side of the embedded circular pads 14 is engaged with the inner side surface of the mounting seats 12 through the grooves 222 .

[0036] The working principle of the nano-magnetic core of a precision current transformer provided by the utility model is as follows:

[0037] After the first and second cams are in the closed position, the cam 11 is in the closed position, and the cam 12 is in the closed position, so that the cam 12 is in the closed position and the cam 13 is in the closed position.

[0038] By placing the nano-magnetic core body 2 into the interior of the lower package shell 1, and then rotating the disk 18 equipped with the screw 17 in sequence, the disk 18 can be moved and adjusted to position and clamp the nano-magnetic core body 2. Then, with the clamping package of the upper package shell 5, the limiting circular plate 16 equipped with the second connecting spring 15 and the movable pressure plate 20 equipped with the third connecting spring 21 can be driven, so that the elastic limiting circular plate 16 and the movable pressure plate 20 can be elastically clamped together to the top of the nano-magnetic core body 2, making the nano-magnetic core body 2 more stable and firm, avoiding the loosening of the nano-magnetic core, and improving the stability of the nano-magnetic core.

[0039] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention as claimed.

Claims

1. A nano-magnetic core for a precision current transformer, comprising a packaging lower shell (1), characterized in that: The upper side of the package lower shell (1) is fixedly connected to positioning rods (3) distributed in an array, the upper side of the package lower shell (1) is connected to top pillars (4) in an array, the upper sides of the positioning rods (3) and the top pillars (4) are clamped with the package upper shell (5), the interior of the package lower shell (1) is fixedly provided with a nano-magnetic core body (2), and both ends of the package lower shell (1) are installed with second L-shaped side plates (7); Both ends of the package upper shell (5) are installed with a first L-shaped side plate (6), and the interiors of the two second L-shaped side plates (7) are rotatably connected with a movable connecting plate (8), and the movable connecting plate (8) is located inside the first L-shaped side plate (6). Both ends of the two movable connecting plates (8) are slidably connected with a movable clamping rod (9) for fixing the movable connecting plate (8), and a No. 1 connecting spring (10) is connected between the four movable clamping rods (9) and the movable connecting plates (8). The interiors of the package lower shell (1) and the package upper shell (5) are both provided with array-distributed heat dissipation holes (11).

2. The nanomagnetic core of a precision current transformer according to claim 1, characterized in that: The top end of the package upper shell (5) is connected to a No. 2 connection spring (15) in an array array, and a limiting circular plate (16) for fixing the nano-magnetic core body (2) is installed on the lower side of the No. 2 connection spring (15). The internal thread of the package lower shell (1) is connected to an array of screw rods (17), and the inner side surface of the screw rod (17) is installed with a disk (18) for fixing the nano-magnetic core body (2).

3. The nano-magnetic core of a precision current transformer according to claim 1, characterized in that: The interior of the package upper shell (5) is fixedly connected to an array of vertical rods (19), and the outer surface of the vertical rod (19) is slidably connected to a movable pressure plate (20) for fixing the nano-magnetic core body (2), and a No. 3 connecting spring (21) is fixedly connected between the movable pressure plate (20) and the package upper shell (5).

4. The nanomagnetic core of a precision current transformer according to claim 1, characterized in that: Two mounting seats (12) are fixedly mounted on the inner side surfaces of the packaging lower shell (1) and the packaging upper shell (5), and the inner side surfaces of the two mounting seats (12) are clamped with support inserts (13), and two ends of the support inserts (13) are connected to two embedded circular pads (14).

5. The nano-magnetic core of a precision current transformer according to claim 1, characterized in that: Two embedded card slots (111) are provided inside the two first L-shaped side panels (6), and the embedded card slots (111) are adapted to the movable card rod (9). The outer surface of the movable card rod (9) is slidably engaged with the interior of the first L-shaped side panel (6) through the embedded card slots (111).

6. The nano-magnetic core of a precision current transformer according to claim 4, characterized in that: The inner side surfaces of the four mounting seats (12) are each provided with two grooves (222), the grooves (222) being adapted to the embedded circular pads (14), and one side of the embedded circular pads (14) being snap-connected to the inner side surface of the mounting seat (12) via the grooves (222).

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