Current transformer convenient to disassemble

Abstract

The current transformer convenient to disassemble comprises a shell, an iron core, a primary coil and a secondary coil, the shell comprises a bottom box and a cover body, a groove is formed in the top of the bottom box, a first fixing block protruding upwards is arranged at the bottom of the groove, a first clamping groove is formed in the top of the first fixing block, and a second clamping groove is formed in the top of the second fixing block. The top of the first fixing block is detachably connected with a second fixing block, a second clamping groove is formed in the bottom of the second fixing block, the primary coil is wound around one end of the iron core, the two ends of the primary coil extend outwards through a first lead port in the bottom box, and the secondary coil is wound around the other end of the iron core. The two ends of the secondary coil extend outwards through a second lead wire opening in the bottom box, and the cover body is detachably installed on the top of the bottom box. The shell of the mutual inductor, the fixing block used for clamping and fixing the iron core in the shell and the led-out coil can form a detachable structure during assembly, the current transformer can be conveniently maintained, and operation is easy and convenient.

Description

Technical Field

[0001] This utility model relates to the field of current transformer technology, specifically a current transformer that is easy to disassemble. Background Technology

[0002] A current transformer is a power sensor that operates based on the principle of electromagnetic induction. It is primarily used to convert a large primary current into a smaller secondary current for measurement, protection, and control. Current transformers are widely used in power systems, industrial automation, transportation, and building and environmental control.

[0003] After prolonged use, the internal components of current transformers are prone to aging or damage. Users need to disassemble the current transformer for maintenance to extend its service life. However, due to the overly complex structure of current transformers, it is difficult for users to easily disassemble the connected structures, and disassembly requires a considerable amount of time. Utility Model Content

[0004] In order to overcome the shortcomings of existing technical solutions, this utility model provides a current transformer that is easy to disassemble, which can effectively solve the technical problem that current current transformers are inconvenient to disassemble.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A detachable current transformer includes a housing, an iron core, a primary coil, and a secondary coil. The iron core is installed inside the housing, and both the primary and secondary coils are wound around the iron core. The housing includes a bottom box and a cover. The top of the bottom box has a groove for placing the iron core, and the bottom of the groove has a first upward-protruding fixing block. The top of the first fixing block has a first clamping groove for clamping the lower part of the iron core. A second fixing block is detachably connected to the top of the first fixing block, and the bottom of the second fixing block has a second clamping groove for clamping the upper part of the iron core. The primary coil is wound around one end of the iron core, and both ends of the primary coil extend outward through a first lead-in port on the bottom box. The secondary coil is wound around the other end of the iron core, and both ends of the secondary coil extend outward through a second lead-in port on the bottom box. The cover is detachably installed on the top of the bottom box. When the cover is installed, the bottom of the cover contacts the top of the second fixing block.

[0007] Furthermore, the cover is connected to at least two first insert rods that are inserted and fixed inside the bottom box. The bottom box is provided with first slots corresponding to the number and position of the first insert rods, and the first slots are distributed around the periphery of the groove.

[0008] Furthermore, the bottom of the second fixing block is connected to two second insert rods that are inserted into and fixed inside the first fixing block, and the first fixing block is provided with a second slot corresponding to the position of the second insert rods.

[0009] Furthermore, both ends of the iron core extend outwards, forming a suspended structure.

[0010] Furthermore, the first lead port is located at one end of the bottom box near the primary coil, and the second lead port is located at one end of the bottom box near the secondary coil. Both the first lead port and the second lead port are equipped with insulating sealing rings.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] The housing, the internal fixing block for clamping and fixing the iron core, and the lead-out coil of the current transformer provided by this utility model can all be assembled into a detachable structure. When the user needs to maintain the current transformer, the internal structure of the current transformer can be easily disassembled, making the operation simple and convenient. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0014] Figure 2 This is a schematic diagram of the internal connecting iron core and the second fixing block of the bottom box in an embodiment of this utility model;

[0015] Figure 3 This is a schematic diagram of the internal connecting iron core structure of the bottom box in an embodiment of this utility model;

[0016] Figure 4 This is a schematic diagram of the internal structure of the bottom box in an embodiment of this utility model;

[0017] Figure 5 This is a schematic diagram of the second fixing block structure according to an embodiment of the present utility model;

[0018] Figure 6 This is a schematic diagram of the cover structure of an embodiment of the present utility model;

[0019] Numbering on the map:

[0020] 1-Shell, 2-Iron core, 3-Primary coil, 4-Secondary coil, 5-Groove, 6-First fixing block, 7-First clamping groove, 8-Second fixing block, 9-Second clamping groove, 10-First lead-in port, 11-Second lead-in port, 12-First insertion rod, 13-First slot, 14-Second insertion rod, 15-Second slot, 16-Insulating sealing ring; 101-Base box, 102-Cover. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] like Figure 1-6 As shown, this utility model provides a current transformer that is easy to disassemble. By optimizing the internal structure of the current transformer, a structure that is easy to disassemble is formed, making it convenient for users to disassemble the current transformer for maintenance or replacement of internal components. The structure of the current transformer mainly includes a housing 1, an iron core 2, a primary coil 3, and a secondary coil 4. The iron core 2 is installed inside the housing 1, and the primary coil 3 and the secondary coil 4 are respectively wound around the two ends of the iron core 2, converting the high-voltage current input to the primary coil 3 into a low-voltage current output from the secondary coil 4.

[0023] The housing 1 consists of a base box 101 and a cover 102. The base box 101 has a recess 5 with a top opening inside, which is used to place the iron core 2. The cover 102 is installed at the top opening of the base box 101 and forms a detachable structure. The cover 102 is connected to the base box 101 via first inserts 12. Specifically, four first inserts 12 are connected to the bottom of the cover 102, and four first slots 13 corresponding to the positions of the first inserts 12 are provided on the top of the base box 101, distributed around the periphery of the recess 5. When the cover 102 is connected to the base box 101, the user needs to insert the first inserts 12 into the first slots 13 until the base box 101 and the cover 102 are seamlessly connected. This structure has good stability and also facilitates disassembly between the cover 102 and the base box 101.

[0024] A first fixing block 6 protruding upwards is provided at the bottom of the groove 5. The top of the first fixing block 6 has a first clamping groove 7 for clamping the lower part of the iron core 2. A second fixing block 8 is detachably connected to the top of the first fixing block 6. The bottom of the second fixing block 8 has a second clamping groove 9 for clamping the upper part of the iron core 2. At this time, the first clamping groove 7 and the second clamping groove 9 together form a space for clamping and fixing the iron core 2. The first fixing block 6 and the second fixing block 8 are arranged on both sides of the iron core 2 to clamp the iron core 2. In order not to affect the winding of the primary coil 3 and the secondary coil 4, the first fixing block 6 and the second fixing block 8 are only clamped at the middle position of the iron core 2. At this time, both ends of the iron core 2 extend outwards and have a suspended structure.

[0025] When the first fixing block 6 and the second fixing block 8 are connected, they are connected by the second insert rod 14, forming a detachable structure. Specifically, two second insert rods 14 are connected to the bottom of the second fixing block 8, distributed at both ends, while two second slots 15 corresponding to the positions of the second insert rods 14 are opened on the top of the first fixing block 6. When the first fixing block 6 and the second fixing block 8 are connected, the user only needs to insert the second insert rod 14 into the corresponding second slot 15, which simultaneously clamps and fixes the iron core 2. For disassembly, the user simply holds the second fixing block 6 and pulls the second insert rod 14 out of the second slot 15. It should be noted that when the cover 102 is installed at the opening of the bottom box 101, the bottom of the cover 102 contacts the top of the second fixing block 8 to prevent the iron core 2 from moving or falling off.

[0026] In addition, the primary coil 3 and the secondary coil 4, wound on the iron core 2, are suspended at both ends of the iron core 2. When the primary coil 3 and the secondary coil 4 are wound, the primary coil 3 has more turns than the secondary coil, thus achieving the effect of converting high-voltage current to low-voltage current. Simultaneously, two first lead ports 10 for leading out the two ends of the primary coil 3 and two second lead ports 11 for leading out the two ends of the secondary coil 4 are provided on the base box 101. The first lead ports 10 are located at the end of the base box 101 closest to the primary coil 3, and the second lead ports 11 are located at the end of the base box 101 closest to the secondary coil 4. To achieve better insulation with the base box 102, insulating sealing rings 16 are installed at both the first lead ports 10 and the second lead ports 11. During disassembly, the primary coil 3 and the secondary coil 4 can be directly pulled out through the insulating sealing rings 16. Due to the protection of the insulating sealing rings 16, the primary coil 3 and the secondary coil 4 are easier to remove and will not be damaged.

[0027] Compared with other technologies, the current transformer provided by this technical solution has a detachable structure in terms of its housing 1, the internal fixing block for clamping and fixing the iron core 2, and the lead-out coil. When the user needs to maintain the current transformer, the internal structure of the current transformer can be easily disassembled, making the operation simple and convenient.

[0028] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A current transformer which is easy to disassemble, comprising a housing, a core, a primary coil and a secondary coil, the core being installed in the housing, the primary coil and the secondary coil being wound on the core, characterized in that: The shell comprises a bottom box and a cover, the top of the bottom box is provided with a groove for placing the iron core, the bottom of the groove is provided with a first fixing block protruding upward, the top of the first fixing block is provided with a first clamping groove for clamping the lower part of the iron core, the top of the first fixing block is detachably connected with a second fixing block, the bottom of the second fixing block is provided with a second clamping groove for clamping the upper part of the iron core, the primary coil is wound on one end of the iron core, the two ends of the primary coil extend outward through the first lead port on the bottom box, the secondary coil is wound on the other end of the iron core, the two ends of the secondary coil extend outward through the second lead port on the bottom box, the cover is detachably installed on the top of the bottom box, when the cover is installed, the bottom of the cover is in contact with the top of the second fixing block.

2. A conveniently removable current transformer as claimed in claim 1, characterized in that: The cover is connected with at least two first insertion rods inserted into the bottom box and fixed, the bottom box is provided with first insertion slots corresponding in number and position to the first insertion rods, and the first insertion slots are distributed on the periphery of the groove.

3. A conveniently removable current transformer as claimed in claim 1, characterized in that: The bottom of the second fixing block is connected with two second insertion rods inserted into the first fixing block and fixed, and the first fixing block is provided with second insertion slots corresponding in position to the second insertion rods.

4. A conveniently removable current transformer as claimed in claim 1, characterized in that: The two ends of the iron core extend outward and are in a suspended structure.

5. A conveniently removable current transformer according to any one of claims 1 to 4, characterized in that: The first lead port is arranged at one end of the bottom box close to the primary coil, the second lead port is arranged at one end of the bottom box close to the secondary coil, and the first lead port and the second lead port are both provided with an insulating sealing ring.

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