Electricity larceny prevention current transformer

Abstract

The utility model relates to the technical field of current transformers, in particular to an electricity larceny prevention current transformer which comprises a main body mechanism and two connecting mechanisms. The main body mechanism further comprises shells, the two connecting mechanisms are installed on the two sides of the two shells respectively, each connecting mechanism further comprises a connector, each connector is fixedly connected to the inner side wall of the corresponding shell, and one end of each connector penetrates through the inner side wall of the corresponding shell. The wire is inserted into the second through groove, the nameplate is clamped into the groove, the nameplate presses the pressing plate, and the wire between the first arc-shaped plate and the second arc-shaped plate is extruded and fixed, so that the wire connected with an instrument is connected in a concealed manner, a connector is prevented from being exposed, and an electricity larceny prevention effect is achieved; the wire can be released by only digging the nameplate out of the groove and releasing the fixation of the pressing plate, so that the operation is simple, and the disassembly and the use are convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of current transformers, in particular to a current transformer for preventing electricity theft. Background Art

[0002] The function of the current transformer is to convert the primary current with a larger value into the secondary current with a smaller value through a certain transformation ratio, which is used for protection, measurement and other purposes. The principle of the current transformer is based on the principle of electromagnetic induction. The current transformer is composed of a closed iron core and windings. Its primary winding has few turns and is connected in series in the circuit of the current to be measured. Therefore, it often has the entire current of the circuit flowing through it. The secondary winding has more turns and is connected in series in the measuring instrument and protection circuit.

[0003] A Chinese patent publication (publication number: CN211788597U) discloses an anti-electricity theft current transformer, which solves the problem that the anti-electricity theft effect of the existing anti-electricity theft current transformer is not very good and is not very convenient to use. A connecting shell is installed above the current transformer housing, and the current transformer housing is sealed and connected to the connecting shell. A mounting groove is provided at the front end of the connecting shell. An anti-electricity theft box is installed on one side above the connecting shell. A partition is installed inside the anti-electricity theft box. A connecting block is installed on one side of the anti-electricity theft box. A mounting head is installed above the connecting block. A limit block is installed below the connecting block. A fixing bolt is installed inside the connecting block. A support limit rod is installed inside the limit block. However, in actual use, after the wire is connected to the wire connector, the anti-electricity theft box is fixed by the fixing bolt. The process is relatively complicated, and it is very inconvenient to disconnect the wire from the wire connector, and it is not convenient to disassemble and use. Therefore, an anti-electricity theft current transformer is proposed. Utility Model Content

[0004] In view of this, the utility model provides a current transformer for preventing electricity theft, so as to solve or alleviate the technical problems existing in the prior art, and at least provide a beneficial choice.

[0005] The technical solution of the utility model is implemented as follows: a current transformer for preventing electricity theft comprises a main body mechanism and two connecting mechanisms;

[0006] The main body mechanism also includes a shell, and the two connecting mechanisms are respectively installed on both sides of the two shells. The connecting mechanism also includes a joint, which is fixedly connected to the inner wall of the shell, and one end of the joint passes through the inner wall of the shell. The outer wall of the joint and the upper surface of the shell are both provided with a first through groove, and the inner wall of the first through groove is slidably connected with a pressure plate, and the bottom of the pressure plate is fixedly connected with a second arc plate, and the upper surface of the shell is provided with a groove, and the inner wall of the groove is clamped with a nameplate.

[0007] Further preferably, an iron core is installed inside the shell, and an electric wire winding is wound around the outer wall of the iron core, and the two ends of the electric wire winding are respectively fixedly connected to the two connectors; through the arrangement of the iron core and the electric wire winding, the wire is inserted into the opening of the shell, and the current flowing through the wire is detected.

[0008] Further preferably, one end of the connector is fixedly connected to a cover plate, and a second through slot is provided on one side of the cover plate; through the provision of the second through slot, the wire connected to the measuring instrument is inserted into the second through slot, which is convenient for insertion into a fixed position.

[0009] Further preferably, two limit blocks are fixedly connected to the inner bottom wall of the shell, and the position of the iron core is limited by the setting of the limit blocks.

[0010] Further preferably, both sides of the shell are fixedly connected with fixing blocks, and the upper surface of the fixing blocks is provided with threaded holes; through the setting of the fixing blocks, the fixing bolts are inserted into the threaded holes to install and fix the position of the shell.

[0011] Further preferably, the inner side wall of the connector is fixedly connected with a first arc plate, and the upper surface of the second arc plate is symmetrically fixedly connected with four springs, and the top of the spring is fixedly connected to the inner side wall of the connector; through the setting of the first arc plate, the first arc plate and the second arc plate are integrally formed with a protrusion, so that when the first arc plate and the second arc plate squeeze and fix the wire, the friction force with the wire is increased, thereby improving the fixing effect of the wire, and through the setting of the spring, when the pressure on the second arc plate is released, the counter-tension force of the spring pulls the second arc plate to reset.

[0012] The embodiment of the utility model has the following advantages due to the adoption of the above technical solution:

[0013] During the use of the utility model, it is only necessary to insert the wire into the second through groove, clip the nameplate into the groove, and press the pressure plate with the nameplate to squeeze and fix the wire between the first arc plate and the second arc plate, so as to make a concealed connection with the wire connected to the instrument, avoid leakage of the joint, and play a role in preventing electricity theft. When it is necessary to release the connection of the wire, it is only necessary to pull the nameplate out of the groove and release the fixation of the pressure plate, so as to release the fixation of the wire. The operation is simple and convenient for disassembly and assembly.

[0014] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the utility model will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 This is a structural diagram of the current transformer for preventing electricity theft according to the utility model;

[0017] Figure 2 This is the internal structure diagram of the housing of the utility model;

[0018] Figure 3 This is a structural diagram of the housing of the utility model;

[0019] Figure 4 This is a connection structure diagram of the joint and the pressure plate of the utility model.

[0020] Figure numerals: 1. main body; 11. shell; 12. first through slot; 13. groove; 14. iron core; 15. wire winding; 16. limit block; 17. fixing block; 18. threaded hole; 2. connecting mechanism; 21. joint; 22. cover plate; 23. second through slot; 24. first arc plate; 25. second arc plate; 26. pressure plate; 27. spring; 28. nameplate. DETAILED DESCRIPTION

[0021] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0022] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0023] like Figure 1-4 As shown, the embodiment of the utility model provides a current transformer for preventing electricity theft, comprising a main body mechanism 1 and two connection mechanisms 2;

[0024] The main mechanism 1 also includes a shell 11, and the two connecting mechanisms 2 are respectively installed on both sides of the two shells 11. The connecting mechanism 2 also includes a joint 21, which is fixedly connected to the inner wall of the shell 11. One end of the joint 21 passes through the inner wall of the shell 11. The outer wall of the joint 21 and the upper surface of the shell 11 are both provided with a first through groove 12. The inner wall of the first through groove 12 is slidably connected with a pressure plate 26, and the bottom of the pressure plate 26 is fixedly connected with a second arc plate 25. The upper surface of the shell 11 is provided with a groove 13, and the inner wall of the groove 13 is clamped with a nameplate 28.

[0025] In one embodiment, an iron core 14 is installed inside the shell 11, and an electric wire winding 15 is wound around the outer wall of the iron core 14. The two ends of the electric wire winding 15 are respectively fixedly connected to two connectors 21; through the arrangement of the iron core 14 and the electric wire winding 15, the wire is inserted into the opening of the shell 11 to detect the current flowing through the wire.

[0026] In one embodiment, one end of the connector 21 is fixedly connected to a cover plate 22, and a second through slot 23 is provided on one side of the cover plate 22; through the provision of the second through slot 23, the wire connected to the measuring instrument is inserted into the second through slot 23, which is convenient for insertion into a fixed position.

[0027] In one embodiment, two limit blocks 16 are fixedly connected to the inner bottom wall of the housing 11 ; the position of the iron core 14 is limited by the setting of the limit blocks 16 .

[0028] In one embodiment, fixing blocks 17 are fixedly connected to both sides of the shell 11, and threaded holes 18 are opened on the upper surface of the fixing blocks 17; through the setting of the fixing blocks 17, the fixing bolts are inserted into the threaded holes 18 to install and fix the position of the shell 11.

[0029] In one embodiment, the inner wall of the connector 21 is fixedly connected with a first curved plate 24, and the upper surface of the second curved plate 25 is symmetrically fixedly connected with four springs 27, and the top of the spring 27 is fixedly connected to the inner wall of the connector 21; through the setting of the first curved plate 24, the first curved plate 24 and the second curved plate 25 are integrally formed with a protrusion, so that when the first curved plate 24 and the second curved plate 25 squeeze and fix the wire, the friction with the wire is increased, thereby improving the fixing effect of the wire, and through the setting of the spring 27, when the pressure on the second curved plate 25 is released, the counter-pulling force of the spring 27 pulls the second curved plate 25 to reset.

[0030] When the utility model is in operation: first, the wire connected to the measuring instrument is inserted into the second through groove 23, one end of the wire is located between the first arc plate 24 and the second arc plate 25, then, the nameplate 28 is inserted into the groove 13, the nameplate 28 presses the pressure plate 26, the pressure plate 26 pushes the second arc plate 25, the wire between the first arc plate 24 and the second arc plate 25 is squeezed and fixed, so that the wire connected to the instrument is concealedly connected, the joint 21 is prevented from leaking, and the electricity theft is prevented; when the connection of the wire needs to be released, the nameplate 28 is pulled out of the groove 13, the fixation of the pressure plate 26 is released, and the counter-tension of the spring 27 pulls the second arc plate 25 to reset, so as to release the fixation of the wire.

[0031] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A current transformer for preventing electricity theft, characterized in that: It comprises a main body mechanism (1) and two connecting mechanisms (2); The main body mechanism (1) also includes a shell (11), and the two connecting mechanisms (2) are respectively installed on both sides of the two shells (11). The connecting mechanism (2) also includes a joint (21), and the joint (21) is fixedly connected to the inner wall of the shell (11). One end of the joint (21) passes through the inner wall of the shell (11). The outer wall of the joint (21) and the upper surface of the shell (11) are both provided with a first through groove (12). The inner wall of the first through groove (12) is slidably connected to a pressure plate (26), and the bottom of the pressure plate (26) is fixedly connected to a second arc plate (25). The upper surface of the shell (11) is provided with a groove (13), and the inner wall of the groove (13) is clamped with a nameplate (28).

2. The current transformer for preventing electricity theft according to claim 1, characterized in that: An iron core (14) is installed inside the shell (11), and an electric wire winding (15) is wound around the outer wall of the iron core (14). Two ends of the electric wire winding (15) are respectively fixedly connected to the two connectors (21).

3. The current transformer for preventing electricity theft according to claim 1, characterized in that: One end of the joint (21) is fixedly connected to a cover plate (22), and one side of the cover plate (22) is provided with a second through groove (23).

4. The current transformer for preventing electricity theft according to claim 1, characterized in that: Two limit blocks (16) are fixedly connected to the inner bottom wall of the housing (11).

5. The current transformer for preventing electricity theft according to claim 1, characterized in that: Both sides of the housing (11) are fixedly connected with fixing blocks (17), and the upper surface of the fixing blocks (17) is provided with threaded holes (18).

6. The current transformer for preventing electricity theft according to claim 1, characterized in that: The inner side wall of the joint (21) is fixedly connected to a first arc-shaped plate (24), the upper surface of the second arc-shaped plate (25) is symmetrically fixedly connected to four springs (27), and the top ends of the springs (27) are fixedly connected to the inner side wall of the joint (21).

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