High-safety current transformer

Abstract

The utility model relates to the technical field of current transformers, and provides a current transformer with high safety, which comprises a transformer main body, a mounting table and a second wiring port, the inner wall of the transformer main body is provided with an inner cavity, and the inner wall of the inner cavity is movably provided with a winding. A first wire and a second wire are movably installed on the outer wall of the winding, a movable cavity is formed below the inner cavity and communicates with the inner cavity, and a first rotating rod and a second rotating rod are movably installed on the inner wall of the inner cavity and the inner wall of the movable cavity correspondingly; one end of the first wire and one end of the second wire are movably connected with a first leading-out head and a second leading-out head respectively, and one end of the first leading-out head and one end of the second leading-out head extend to the outer wall of the mutual inductor body through a first wiring port and a second wiring port which are formed in the side wall of the mutual inductor body. And positioning pins are symmetrically arranged on the outer wall of the bottom end of the mutual inductor main body. The problems that in the prior art, short circuit is prone to occurring in line connection, and the mutual inductor is inconvenient to disassemble, assemble and maintain are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of current transformers, and specifically, to a current transformer with high safety. Background Technique

[0002] A current transformer with high safety is a crucial component in the power system, which is used to measure high current and convert it into a low-current signal for use by measuring or control devices. The technical background of a current transformer with high safety involves multiple aspects such as magnetic circuit design, insulation materials and structures, turn design and distribution, linear response and temperature compensation, safety protection and fault detection, as well as environmental adaptability and durability. The comprehensive application of these technologies enables the current transformer to reliably perform measurement and protection functions in the power system, ensuring the safe operation and stability of the power system.

[0003] The patent specification with the publication number of CN 213935832U discloses a current transformer with high safety. By providing an installation shell, an arc-shaped clamping plate is adhesively connected to the upper surface of the installation shell. There are multiple arc-shaped clamping plates, and the adjacent two arc-shaped clamping plates are adhesively connected to each other on the side surfaces close to each other. One end of the arc-shaped clamping plate is movably connected to one side of the upper surface of the installation shell through a pin shaft. A plurality of semi-circular partition plates are arranged at equal intervals in the inner cavity of the installation shell, and the outer side wall of the semi-circular partition plate is fixedly connected to the inner side wall of the installation shell. In the utility model, by providing a plurality of arc-shaped clamping plates on the upper surface of the installation shell, one end of the arc-shaped clamping plate is movably connected to one side surface of the installation shell through a pin shaft, and a plurality of semi-circular partition plates are arranged at equal intervals in the inner cavity of the installation shell. Setting a plurality of semi-circular partition plates can divide the inner cavity of the installation shell into multiple small spaces, so as to facilitate placing a plurality of current transformers side by side in the inner cavity of the installation shell.

[0004] However, in the implementation of the related technology, it is found that the above-mentioned current transformer with high safety has the following problems. This device is inconvenient to repair according to the disassembly and assembly of the transformer main body, and at the same time, the internal circuits of the transformer are prone to be hinged together and cause a short circuit. Therefore, we propose a current transformer with high safety. Content of the Utility Model

[0005] The utility model proposes a current transformer with high safety, which solves the problems of easy short circuit in circuit connection and inconvenient disassembly and assembly and repair of the transformer in the related technology.

[0006] The technical solution of the utility model is as follows:

[0007] A current transformer with high safety includes a transformer main body, a mounting table, and a second wiring port. An inner cavity is provided on the inner wall of the transformer main body. A winding is movably installed on the inner wall of the inner cavity. A first wire and a second wire are respectively movably installed on the outer wall of the winding. An activity cavity is provided below the inner cavity, and the activity cavity is communicated with the inner cavity. A first rotating rod and a second rotating rod are respectively movably installed on the inner walls of the inner cavity and the activity cavity. One ends of the first wire and the second wire are respectively movably connected to a first lead-out head and a second lead-out head. One ends of the first lead-out head and the second lead-out head extend to the outer wall of the transformer main body through a first wiring port and a second wiring port provided on the side wall of the transformer main body. Positioning pins are symmetrically provided on the outer wall of the bottom end of the transformer main body, and the transformer main body is movably installed on the top end of the mounting plate through the positioning pins.

[0008] Preferably, positioning holes are symmetrically provided on the top end of the mounting plate. Telescopic rods are symmetrically provided on the inner wall of the mounting plate. Springs are installed on the outer walls of the telescopic rods. Activity grooves are installed on the inner walls of the telescopic rods. One end of the activity groove is connected to a clamping block. Sliders are symmetrically provided on the outer walls on both sides of the clamping block. Chute grooves are symmetrically provided on the inner walls on both sides of the telescopic rod. The clamping block is movably installed on the inner wall of the telescopic rod through the chute groove, and the front end of the clamping block extends into the inner wall of the positioning hole.

[0009] Preferably, clamping holes are symmetrically provided on the outer walls on both sides of the positioning pin, and the front end of the clamping hole is mutually matched with the front end of the clamping block.

[0010] Preferably, the bottom end of the positioning pin is of a conical structure, an inclined plane is provided on one side of the clamping block, and the positioning pin and the clamping block are mutually fitted.

[0011] Preferably, the slider is of a hemispherical structure, and the slider is mutually matched with the chute groove.

[0012] Preferably, a mounting table is installed on the top end of the transformer main body, and the top end of the mounting table is fixedly installed on the top end of the transformer main body through threads.

[0013] Preferably, a partition board is provided at the middle position of the mounting plate, and the partition board is of a rectangular block structure.

[0014] Preferably, the activity cavity is of a concave cavity structure, and the partition board is located at the middle position of the activity cavity.

[0015] The working principle and beneficial effects of the present utility model are as follows:

[0016] 1. In this utility model, through the provided main transformer body, mounting plate and positioning pin, the main transformer body is clamped at the top of the mounting plate, and the positioning pin provided at the bottom of the main transformer body is inserted into the positioning hole provided at the top of the main transformer body. The conical structure at the bottom of the positioning pin simultaneously compresses the clamping block provided inside the telescopic rod. When the clamping block is squeezed, it will compress the movable groove and the spring. By using the limiting effect of the sliding groove and the sliding block on the clamping block, the clamping block moves horizontally and retracts into the telescopic rod along the sliding groove. When the positioning pin moves downward, the clamping hole is located on the side of the clamping block. Through the elastic force generated by the deformation of the spring, the clamping block resets and is clamped into the clamping hole, so that the main transformer body is fixedly installed at the top of the mounting plate. At the same time, the partition provided at the top of the mounting plate enters the movable cavity and separates it from the middle, fixing the mounting plate and installing the main transformer body at the designated position. This structure can separate the first wire and the second wire when connecting with the connecting wire, avoid short circuit of the circuit, and at the same time facilitate the disassembly, installation and maintenance of the main transformer body, and improve the service life.

[0017] 2. In this utility model, through the provided first lead-out head, second lead-out head and second wire, the first wire and the second wire are respectively led out from the first wiring port and the second wiring port through the first lead-out head and the second lead-out head. Pull the first lead-out head and the second lead-out head to drive the winding to rotate. By rotating the winding, the first wire and the second wire are released and their outer walls fit the first rotating rod and the second rotating rod, so that the first wire and the second wire extend along the established track in the movable cavity and extend out from the first wiring port and the second wiring port. Then, the connecting wires are respectively connected to the extended first wire and second wire correspondingly. When not in use, the first wire and the second wire are wound into the inner cavity by the winding. This current transformer can facilitate the extension and storage of the first wire and the second wire, make them move in the movable cavity along the established track, and avoid the internal first wire and second wire being hinged together when connecting with the connecting wire, improving the safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The following further elaborates on this utility model in detail in conjunction with the drawings and specific embodiments.

[0019] Figure 1 Structural schematic diagram of the main transformer body proposed by this utility model;

[0020] Figure 2 Half-sectional structural schematic diagram of the main transformer body proposed by this utility model;

[0021] Figure 3 Structural schematic diagram of the inner cavity proposed by this utility model;

[0022] Figure 4 Structural schematic diagram of the positioning pin proposed by this utility model;

[0023] Figure 5This is a schematic diagram of the snap-in hole structure proposed by the utility model.

[0024] In the figure: 1. Transformer body; 2. Mounting plate; 3. Mounting platform; 4. First wiring port; 5. Second wiring port; 6. First lead; 7. Second lead; 8. Winding; 9. First conductor; 10. Second conductor; 11. First rotating rod; 12. Second rotating rod; 13. Inner cavity; 14. Positioning pin; 15. Positioning hole; 16. Partition; 17. Movable cavity; 18. Movable groove; 19. Telescopic rod; 20. Spring; 21. Slide groove; 22. Slider; 23. Block; 24. Connecting hole. DETAILED DESCRIPTION

[0025] The following will be combined with 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.

[0026] Example 1: Figures 1 to 5 As shown, this embodiment proposes a current transformer with high safety, including a transformer body 1, a mounting platform 3 and a second wiring port 5, an inner wall of the transformer body 1 is provided with an inner cavity 13, the inner wall of the inner cavity 13 is movably provided with a winding 8, the outer walls of the winding 8 are respectively movably provided with a first wire 9 and a second wire 10, a movable cavity 17 is provided below the inner cavity 13, the movable cavity 17 is communicated with the inner cavity 13, the inner walls of the inner cavity 13 and the movable cavity 17 are respectively movably provided with a first rotating rod 11 and a second rotating rod 12, one end of the first wire 9 and the second wire 10 are respectively movably connected with a first lead 6 and a second lead 7, one end of the first lead 6 and the second lead 7 extend to the outer wall of the transformer body 1 through the first wiring port 4 and the second wiring port 5 provided on the side wall of the transformer body 1, the outer wall of the bottom end of the transformer body 1 is symmetrically provided with positioning pins 14, and the transformer body 1 is movably installed on the top of the mounting plate 2 through the positioning pins 14.

[0027] In this embodiment, a mounting platform 3 is installed on the top of the transformer body 1 , and the top of the mounting platform 3 is fixed to the top of the transformer body 1 by screw threads.

[0028] In this embodiment, a partition plate 16 is provided in the middle of the installation plate 2 , and the partition plate 16 is a rectangular block structure.

[0029] In this embodiment, the active cavity 17 is a concave cavity structure, and the partition 16 is located in the middle of the active cavity 17 .

[0030] Specific examples Figure 1 、Figure 4 and Figure 5 As shown in Figure 5 , when using this structure, the main body 1 of the mutual inductor is clamped at the top of the mounting plate 2, and the positioning pin 14 provided at the bottom of the main body 1 of the mutual inductor is inserted into the positioning hole 15 provided at the top of the main body 1 of the mutual inductor. The conical structure at the bottom of the positioning pin 14 simultaneously compresses the clamping block 23 provided in the telescopic rod 19. When the clamping block 23 is squeezed, it will compress the movable groove 18 and the spring 20. By using the limiting effect of the sliding groove 21 and the sliding block 22 on the clamping block 23, the clamping block 23 is translated and retracted into the telescopic rod 19 along the sliding groove 21. When the positioning pin 14 moves downward, the clamping hole 24 is located on the side of the clamping block 23. The elastic force generated by the deformation of the spring 20 makes the clamping block 23 reset and snap into the clamping hole 24, so that the main body 1 of the mutual inductor is fixedly installed at the top of the mounting plate 2. At the same time, the partition plate 16 provided at the top of the mounting plate 2 enters the movable cavity 17 and separates it from the middle, fixes the mounting plate 2, and installs the main body 1 of the mutual inductor at the specified position. This structure can separate the first wire 9 and the second wire 10 when connecting with the connecting wire, avoid short circuit of the circuit, and at the same time facilitate the disassembly, installation and maintenance of the main body 1 of the mutual inductor, and improve the service life.

[0031] Embodiment 2: The positioning holes 15 are symmetrically provided at the top of the mounting plate 2, the telescopic rods 19 are symmetrically provided on the inner wall of the mounting plate 2, the springs 20 are installed on the outer walls of the telescopic rods 19, the movable grooves 18 are installed on the inner walls of the telescopic rods 19, one end of the movable groove 18 is connected with the clamping block 23, the sliding blocks 22 are symmetrically arranged on the outer walls on both sides of the clamping block 23, the sliding grooves 21 are symmetrically arranged on the inner walls on both sides of the telescopic rod 19, and the clamping block 23 is movably installed on the inner wall of the telescopic rod 19 through the sliding groove 21, and the front end of the clamping block 23 extends to the inner wall of the positioning hole 15.

[0032] In this embodiment, the clamping holes 24 are symmetrically provided on the outer walls on both sides of the positioning pin 14, and the front ends of the clamping holes 24 match the clamping block 23.

[0033] In this embodiment, the bottom end of the positioning pin 14 is in a conical structure, one side of the clamping block 23 is provided with an inclined plane, and the positioning pin 14 and the clamping block 23 are mutually fitted.

[0034] In this embodiment, the sliding block 22 is in a hemispherical structure, and the sliding block 22 matches the sliding groove 21.

[0035] Specifically, as Figures 1 to 3As shown in the figure, when using this structure, the first wire 9 and the second wire 10 are respectively led out from the first wiring port 4 and the second wiring port 5 through the first lead-out head 6 and the second lead-out head 7. Pulling the first lead-out head 6 and the second lead-out head 7 drives the winding 8 to rotate. As the winding 8 rotates, the first wire 9 and the second wire 10 are released, and as their outer walls fit against the first rotating rod 11 and the second rotating rod 12, the first wire 9 and the second wire 10 extend along a predetermined trajectory in the movable cavity 17 and extend out from the first wiring port 4 and the second wiring port 5. Then, the connecting wires are respectively connected to the extended first wire 9 and second wire 10 correspondingly. When not in use, the first wire 9 and the second wire 10 are wound into the inner cavity 13 through the winding 8. This current transformer can conveniently extend and store the first wire 9 and the second wire 10, enabling them to move in the movable cavity 17 along a predetermined trajectory, avoiding the internal first wire 9 and second wire 10 being hinged together when connecting with the connecting wires, and improving safety.

[0036] Working principle: When in use, the main body of the transformer 1 is clamped on the top of the mounting plate 2, and the positioning pin 14 provided at the bottom of the main body of the transformer 1 is inserted into the positioning hole 15 provided at the top of the main body of the transformer 1. The conical structure at the bottom of the positioning pin 14 simultaneously compresses the block 23 provided in the telescopic rod 19. When the block 23 is squeezed, it compresses the movable groove 18 and the spring 20. Utilizing the limiting effect of the sliding groove 21 and the sliding block 22 on the block 23, the block 23 translates and retracts into the telescopic rod 19 along the sliding groove 21. When the positioning pin 14 moves downward, the clamping hole 24 is located on the side of the block 23. Through the elastic force generated by the deformation of the spring 20, the block 23 resets and is clamped into the clamping hole 24, fixing the main body of the transformer 1 on the top of the mounting plate 2. At the same time, the partition plate 16 provided at the top of the mounting plate 2 enters the movable cavity 17 and separates it in the middle, fixing the mounting plate 2 and installing the main body of the transformer 1 at the designated position. The first wire 9 and the second wire 10 are respectively led out from the first wiring port 4 and the second wiring port 5 through the first lead-out head 6 and the second lead-out head 7. Pulling the first lead-out head 6 and the second lead-out head 7 drives the winding 8 to rotate. As the winding 8 rotates, the first wire 9 and the second wire 10 are released, and as their outer walls fit against the first rotating rod 11 and the second rotating rod 12, the first wire 9 and the second wire 10 extend along a predetermined trajectory in the movable cavity 17 and extend out from the first wiring port 4 and the second wiring port 5. Then, the connecting wires are respectively connected to the extended first wire 9 and second wire 10 correspondingly. When not in use, the first wire 9 and the second wire 10 are wound into the inner cavity 13 through the winding 8. This current transformer can isolate the first wire 9 and the second wire 10 to avoid contact with each other during use, resulting in a short circuit of the current transformer, ensuring its safety in use. At the same time, this current transformer can be conveniently disassembled and assembled from the mounting plate ②, facilitating disassembly and repair, and prolonging the service life of the current transformer.

[0037] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A current transformer with high safety, comprising a transformer main body (1), a mounting table (3) and a second wiring port (5), characterized in that: The inner wall of the mutual inductor body (1) is provided with an inner cavity (13). A winding (8) is movably installed on the inner wall of the inner cavity (13). A first wire (9) and a second wire (10) are respectively movably installed on the outer wall of the winding (8). A movable cavity (17) is arranged below the inner cavity (13). The movable cavity (17) is communicated with the inner cavity (13). A first rotating rod (11) and a second rotating rod (12) are respectively movably installed on the inner walls of the inner cavity (13) and the movable cavity (17). One ends of the first wire (9) and the second wire (10) are respectively movably connected to a first lead-out head (6) and a second lead-out head (7). One ends of the first lead-out head (6) and the second lead-out head (7) extend to the outer wall of the mutual inductor body (1) through a first wiring port (4) and a second wiring port (5) arranged on the side wall of the mutual inductor body (1). Positioning pins (14) are symmetrically arranged on the outer wall of the bottom end of the mutual inductor body (1). The mutual inductor body (1) is movably installed on the top end of an installation plate (2) through the positioning pins (14).

2. The highly secure current transformer according to claim 1, wherein Positioning holes (15) are symmetrically arranged on the top end of the installation plate (2). Telescopic rods (19) are symmetrically arranged on the inner wall of the installation plate (2). Springs (20) are installed on the outer walls of the telescopic rods (19). Movable grooves (18) are installed on the inner walls of the telescopic rods (19). One end of the movable groove (18) is connected to a clamping block (23). Sliders (22) are symmetrically arranged on the outer walls on both sides of the clamping block (23). Chute grooves (21) are symmetrically arranged on the inner walls on both sides of the telescopic rod (19). The clamping block (23) is movably installed on the inner wall of the telescopic rod (19) through the chute grooves (21). The front end of the clamping block (23) extends to the inner wall of the positioning hole (15).

3. The high-safety current transformer according to claim 1, wherein, Clamping holes (24) are symmetrically arranged on the outer walls on both sides of the positioning pin (14). The clamping holes (24) are mutually matched with the front end of the clamping block (23).

4. The current transformer with high safety according to claim 3, characterized in that, The bottom end of the positioning pin (14) is of a conical structure. An inclined plane is arranged on one side of the clamping block (23). The positioning pin (14) and the clamping block (23) are mutually fitted.

5. The current transformer with high safety according to claim 2, wherein The slider (22) is of a hemispherical structure. The slider (22) is mutually matched with the chute groove (21).

6. The current transformer with high safety according to claim 5, characterized in that, An installation table (3) is installed on the top end of the mutual inductor body (1). The top end of the installation table (3) is fixedly installed on the top end of the mutual inductor body (1) by threads.

7. The current transformer with high safety according to claim 6, wherein, A partition plate (16) is arranged at the middle position of the installation plate (2). The partition plate (16) is of a rectangular block structure.

8. A highly secure current transformer according to claim 7, characterized in that, The movable cavity (17) is of a concave cavity structure. The partition plate (16) is located at the middle position of the movable cavity (17).

Images