Nanocrystalline magnetic core of current transformer

Abstract

The utility model relates to the technical field of nanocrystalline magnetism, and discloses a nanocrystalline magnetic core of a current transformer, which comprises a first nanocrystalline magnetic core body, and a second nanocrystalline magnetic core body is arranged at the bottom of the first nanocrystalline magnetic core body. The first nanocrystalline magnetic core body and the second nanocrystalline magnetic core body are arranged on the base, and connecting protection assemblies are arranged on the first nanocrystalline magnetic core body and the second nanocrystalline magnetic core body. A middle protection pad in the connection protection assembly is arranged at the joint of a first nanocrystalline magnetic core body and a second nanocrystalline magnetic core body, so that connection between the first nanocrystalline magnetic core body and the second nanocrystalline magnetic core body is more stable; therefore, subsequent winding processing on the first nanocrystalline magnetic core body and the second nanocrystalline magnetic core body by a user is more convenient, the first nanocrystalline magnetic core body and the second nanocrystalline magnetic core body can be effectively protected, and subsequent processing and use of the first nanocrystalline magnetic core body and the second nanocrystalline magnetic core body can be facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to nanocrystalline magnetic core technical field, concretely is a nanocrystalline magnetic core of current transformer. BACKGROUND

[0002] Nanocrystalline magnetic core is the material that ferromagnetic element and amorphous element combination. It has low coercivity, high magnetic conductivity, low loss, low saturation magnetic induction, high resistivity, high temperature stability and excellent frequency characteristics, and adjustable magnetic function. This material can reduce total loss after proper annealing, so it has wide application in electronics, aviation, aerospace, machinery, microelectronics and many other fields.

[0003] Through the retrieval has authorized China patent announcement No. CN 221141809 U discloses a nanocrystalline magnetic core manufacturing device, belongs to nanocrystalline magnetic core heat treatment technical field, including heat treatment equipment, the installation base plate is placed in heat treatment equipment, the upper end of installation base plate is installed with a plurality of nanocrystalline magnetic core limiting device, nanocrystalline magnetic core limiting device is composed of installation base ring, support net board, support rod, support base ring, adjusting screw and rotating plate, support net board is installed on the inner wall of installation base ring, support rod has four and is symmetrically installed on installation base ring, support base ring is installed on the upper end of four support rods, by setting nanocrystalline magnetic core limiting device on installation base plate, the nanocrystalline magnetic core limiting device can limit each nanocrystalline magnetic core needing heat treatment, so that multiple nanocrystalline magnetic cores can be avoided to be accumulated together when nanocrystalline magnetic core is heat treated, and then nanocrystalline magnetic core can be uniformly heated when heat treated, finally the heat treatment effect of nanocrystalline magnetic core is better.

[0004] The nanocrystalline magnetic core in the above-mentioned patent still has certain deficiencies. Since the nanocrystalline matrix used in the nanocrystalline magnetic core for current transformers is a strip-shaped material, it is very brittle. If it is not wrapped or treated in any way, it has poor stress resistance and is prone to falling off and breaking, which brings inconvenience to installation and operation and may also cause short-circuit hazards to the circuit. It is necessary to provide an additional protective shell, but the existing additional protective shell for nanocrystalline magnetic cores is mostly wrapped integrally on the surface of the nanocrystalline material. This wrapping method not only increases the volume of the product itself, but also reduces the utilization rate of the inner hole of the magnetic ring, and is inconvenient to use. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies of the prior art, the utility model provides a nanocrystalline magnetic core for a current transformer, which solves the problem that the existing additional protective shell for nanocrystalline magnetic cores is mostly wrapped integrally on the surface of the nanocrystalline material. This wrapping method not only increases the volume of the product itself, but also reduces the utilization rate of the inner hole of the magnetic ring, and is inconvenient to use.

[0006] The utility model provides following technical scheme: A nanocrystalline magnetic core of current transformer, including first nanocrystalline magnetic core body, the bottom of first nanocrystalline magnetic core body is provided with second nanocrystalline magnetic core body, be provided with the connecting protection assembly on first nanocrystalline magnetic core body and second nanocrystalline magnetic core body,

[0007] The connecting protection assembly includes a middle protection pad disposed between the first nanocrystalline magnetic core body and the second nanocrystalline magnetic core body, a top protection sleeve is arranged at the top end of the first nanocrystalline magnetic core body, a top connecting slot is formed at the bottom end of the top protection sleeve, a top recess is formed at the top end of the top protection sleeve, a plurality of top connecting holes are uniformly formed around the top recess, a plurality of connecting jack holes are uniformly formed around the middle protection pad, four first outer side protection strips are uniformly arranged around the first nanocrystalline magnetic core body, a first mounting jack hole is formed in the middle of each first outer side protection strip, four second outer side protection strips are uniformly arranged around the second nanocrystalline magnetic core body, a second mounting jack hole is formed in the middle of each second outer side protection strip, a bottom protection sleeve is arranged at the bottom of the second nanocrystalline magnetic core body, a bottom connecting slot is formed at the side of the bottom protection sleeve, and a bottom recess is formed at the other side of the bottom protection sleeve.

[0008] Preferred technical solution one: four bottom jack holes are uniformly formed in the bottom recess, and a fixing screw rod is arranged outside the first nanocrystalline magnetic core body.

[0009] Preferred technical solution two: the fixing screw rod sequentially penetrates through the top connecting hole, the first mounting jack hole, the connecting jack hole, the second mounting jack hole, and the bottom jack hole, and two fixing nuts are symmetrically arranged at the two ends of the fixing screw rod.

[0010] Preferred technical solution three: the middle protection pad has a hollow circular shape.

[0011] This scheme can prevent the middle protection pad from affecting the middle winding operation of the first nanocrystalline magnetic core body and the second nanocrystalline magnetic core body.

[0012] Preferred technical solution four: the inner walls of the first outer side protection strips and the second outer side protection strips have a circular arc shape.

[0013] This scheme can make the first outer side protection strips and the second outer side protection strips more closely fit the outer walls of the first nanocrystalline magnetic core body and the second nanocrystalline magnetic core body.

[0014] Preferred technical solution five: the end portions of the fixing screw rod inserted into the top connecting hole and the bottom jack hole are smaller than the depths of the bottom recess and the top recess.

[0015] The fixed screw rod can fasten the top protective sleeve and the bottom protective sleeve to the outer side of the first nanocrystalline magnetic core body and the second nanocrystalline magnetic core body.

[0016] Compared with the prior art, the nanocrystalline magnetic core of the current transformer has the following beneficial effects:

[0017] (1) The utility model discloses a first nanocrystalline magnetic core body and second nanocrystalline magnetic core body are set up with connecting protection subassembly, wherein the middle protective pad in connecting protection subassembly is set up at the joint of first nanocrystalline magnetic core body and second nanocrystalline magnetic core body, and the top of first nanocrystalline magnetic core body is equipped with top protective sleeve, and the bottom of second nanocrystalline magnetic core body is equipped with bottom protective sleeve, and the top protective sleeve and bottom protective sleeve are connected fastening through the fixed screw rod in the top connecting hole, first installation jack, connecting jack, second installation jack and bottom jack middle part in proper order, so that the connection between first nanocrystalline magnetic core body and second nanocrystalline magnetic core body is more stable, and the outer side edge is effectively wrapped and protected, and the wrapping mode does not cover most of the area of first nanocrystalline magnetic core body and second nanocrystalline magnetic core body, does not reduce the utilization of the hole in first nanocrystalline magnetic core body and second nanocrystalline magnetic core body, is more convenient for the subsequent winding processing of first nanocrystalline magnetic core body and second nanocrystalline magnetic core body, can effectively protect and facilitate subsequent processing and use. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the structure of the utility model's stereogram schematic diagram;

[0019] Figure 2 It is the structure of the utility model's exploded schematic diagram;

[0020] Figure 3 It is the structure of the utility model's Figure 2 It is the structure of the utility model's top protective sleeve's structure enlargement diagram;

[0021] Figure 4 It is the structure of the utility model's Figure 2 It is the structure of the utility model's connecting jack's structure enlargement diagram;

[0022] Figure 5 It is the structure of the utility model's Figure 2 It is the structure of the utility model's bottom protective sleeve's structure schematic diagram.

[0023] In the drawing: 1, first nanocrystalline magnetic core body;2, second nanocrystalline magnetic core body;3, connecting protection subassembly;

[0024] 301, middle protective pad; 302, top protective sleeve; 303, top connecting slot; 304, top groove; 305, top connecting hole; 306, connecting jack; 307, first outer protective strip; 308, first mounting jack; 309, second outer protective strip; 310, second mounting jack; 311, bottom protective sleeve; 312, bottom connecting slot; 313, bottom groove; 314, bottom jack; 315, fixing screw; 316, fixing nut. DETAILED DESCRIPTION

[0025] Please refer to Figures 1-5 ,

[0026] Embodiment one: a nanocrystalline magnetic core of a current transformer, comprising a first nanocrystalline magnetic core body 1, a second nanocrystalline magnetic core body 2 is arranged at the bottom of the first nanocrystalline magnetic core body 1, and a connecting protective assembly 3 is arranged on the first nanocrystalline magnetic core body 1 and the second nanocrystalline magnetic core body 2.

[0027] The connecting protective assembly 3 comprises a middle protective pad 301 arranged between the first nanocrystalline magnetic core body 1 and the second nanocrystalline magnetic core body 2, a top protective sleeve 302 arranged at the top end of the first nanocrystalline magnetic core body 1, a top connecting slot 303 formed at the bottom end of the top protective sleeve 302, a top groove 304 formed at the top end of the top protective sleeve 302, a plurality of top connecting holes 305 evenly formed around the top groove 304, a plurality of connecting jacks 306 evenly formed around the middle protective pad 301, four first outer protective strips 307 evenly arranged around the first nanocrystalline magnetic core body 1, and a first mounting jack 308 formed at the middle of each first outer protective strip 307.

[0028] Four second outer protective strips 309 are evenly arranged around the second nanocrystalline magnetic core body 2, a second mounting jack 310 is formed at the middle of each second outer protective strip 309, a bottom protective sleeve 311 is arranged at the bottom of the second nanocrystalline magnetic core body 2, a bottom connecting slot 312 is formed at the side of the bottom protective sleeve 311, a bottom groove 313 is formed at the other side of the bottom protective sleeve 311, four bottom jacks 314 are evenly formed on the bottom groove 313, a fixing screw 315 is arranged outside the first nanocrystalline magnetic core body 1, the fixing screw 315 sequentially penetrates through the top connecting hole 305, the first mounting jack 308, the connecting jack 306, the second mounting jack 310, and the bottom jack 314, and two fixing nuts 316 are symmetrically arranged at the two ends of the fixing screw 315.

[0029] Embodiment two: the difference between this embodiment and embodiment one is that the middle protective pad 301 is in the shape of a hollow circle.

[0030] So that the middle protective pad 301 does not affect the middle winding operation of the first nanocrystalline magnetic core body 1 and the second nanocrystalline magnetic core body 2.

[0031] Embodiment three: The difference between this embodiment and embodiment one is that the inner wall of the first outer protective strip 307 and the second outer protective strip 309 is in the shape of a circular arc.

[0032] So that the first outer protective strip 307 and the second outer protective strip 309 are more closely attached to the outer wall of the first nanocrystalline magnetic core body 1 and the second nanocrystalline magnetic core body 2.

[0033] Embodiment four: The difference between this embodiment and embodiment one is that the end of the fixed screw rod 315 inserted into the top connecting hole 305 and the bottom insertion hole 314 is smaller than the depth of the bottom groove 313 and the top groove 304.

[0034] So that the fixed screw rod 315 can tightly connect the top protective sleeve 302 and the bottom protective sleeve 311 to the outer side of the first nanocrystalline magnetic core body 1 and the second nanocrystalline magnetic core body 2.

[0035] In this embodiment, since the existing nanocrystalline magnetic core protective shell is mostly wrapped on the surface of the nanocrystalline, this wrapping method not only increases the volume of the product itself, but also reduces the utilization rate of the inner hole of the magnetic ring, which is inconvenient to use.

[0036] In summary, in specific implementation, the first nanocrystalline magnetic core body 1 and the second nanocrystalline magnetic core body 2 are provided with a connecting protective assembly 3, wherein the middle protective pad 301 in the connecting protective assembly 3 is arranged at the joint of the first nanocrystalline magnetic core body 1 and the second nanocrystalline magnetic core body 2, the top end of the first nanocrystalline magnetic core body 1 is provided with a top protective sleeve 302, the top protective sleeve 302 is provided with a top connecting clamping groove 303, the top connecting clamping groove 303 can be clamped on the side edge of the top end of the first nanocrystalline magnetic core body 1, the bottom of the second nanocrystalline magnetic core body 2 is provided with a bottom protective sleeve 311, the side edge of the bottom protective sleeve 311 is provided with a bottom connecting clamping groove 312, and the bottom connecting clamping groove 312 can be sleeved on the side edge of the bottom end of the second nanocrystalline magnetic core body 2.

[0037] Then, the user inserts the fixed screw rod 315 into the top connecting hole 305, so that the fixed screw rod 315 penetrates the first installation insertion hole 308 in the middle of the first outer protective strip 307, penetrates the connecting insertion hole 306 and the second installation insertion hole 310 in the middle of the second outer protective strip 309, and penetrates out from the bottom insertion hole 314, and then the two ends of the fixed screw rod 315 are sleeved with fixed nuts 316, thereby tightly connecting the first nanocrystalline magnetic core body 1 and the second nanocrystalline magnetic core body 2.

[0038] The outer side portions of the first nanocrystalline magnetic core body 1 and the second nanocrystalline magnetic core body 2 are effectively wrapped and protected, and the wrapping manner does not cover most of the first nanocrystalline magnetic core body 1 and the second nanocrystalline magnetic core body 2, does not reduce the utilization rate of the inner holes of the first nanocrystalline magnetic core body 1 and the second nanocrystalline magnetic core body 2, and is more convenient for subsequent winding processing of the first nanocrystalline magnetic core body 1 and the second nanocrystalline magnetic core body 2. The first nanocrystalline magnetic core body 1 and the second nanocrystalline magnetic core body 2 can be effectively protected and conveniently used in subsequent processing.

Claims

1. A nanocrystalline magnetic core for a current transformer comprising a first nanocrystalline magnetic core body (1), characterized in that: The bottom of the first nanocrystalline magnetic core body (1) is provided with a second nanocrystalline magnetic core body (2), and the first nanocrystalline magnetic core body (1) and the second nanocrystalline magnetic core body (2) are provided with a connecting protection assembly (3); The connecting protection assembly (3) comprises a middle protection pad (301) arranged between the first nanocrystalline magnetic core body (1) and the second nanocrystalline magnetic core body (2), a top protection sleeve (302) arranged at the top end of the first nanocrystalline magnetic core body (1), a top connecting clamping groove (303) formed at the bottom end of the top protection sleeve (302), a top recess (304) formed at the top end of the top protection sleeve (302), a plurality of top connecting holes (305) uniformly formed around the top recess (304), a plurality of connecting insertion holes (306) uniformly formed around the middle protection pad (301), four first outer side protection strips (307) uniformly arranged around the first nanocrystalline magnetic core body (1), a first installation insertion hole (308) formed in the middle of each first outer side protection strip (307), four second outer side protection strips (309) uniformly arranged around the second nanocrystalline magnetic core body (2), a second installation insertion hole (310) formed in the middle of each second outer side protection strip (309), a bottom protection sleeve (311) arranged at the bottom of the second nanocrystalline magnetic core body (2), a bottom connecting clamping groove (312) formed at the side edge of the bottom protection sleeve (311), and a bottom recess (313) formed at the other side of the bottom protection sleeve (311).

2. A nanocrystalline magnetic core for a current transformer according to claim 1, characterized in that: Four bottom insertion holes (314) are uniformly formed in the bottom recess (313), and a fixing screw rod (315) is arranged outside the first nanocrystalline magnetic core body (1).

3. A nanocrystalline magnetic core for a current transformer according to claim 2, characterized in that: The fixing screw rod (315) penetrates the top connecting hole (305), the first installation insertion hole (308), the connecting insertion hole (306), the second installation insertion hole (310) and the bottom insertion hole (314) in sequence, and two fixing nuts (316) are symmetrically arranged at the two ends of the fixing screw rod (315).

4. A nanocrystalline magnetic core for a current transformer according to claim 3, characterized in that: The middle protection pad (301) is in the shape of a hollow circle.

5. A nanocrystalline magnetic core for a current transformer according to claim 4, characterized in that: The inner walls of the first outer side protection strips (307) and the second outer side protection strips (309) are in the shape of a circular arc.

6. A nanocrystalline magnetic core for a current transformer according to claim 5, characterized in that: The end portions of the fixing screw rod (315) inserted into the top connecting hole (305) and the bottom insertion hole (314) are smaller than the depth of the bottom recess (313) and the top recess (304).

Images