Current transformer with electricity larceny prevention function

Abstract

The utility model relates to the technical field of current transformers, and discloses a current transformer with an electricity larceny prevention function, which comprises an anti-theft box, the front side of the anti-theft box is rotatably connected with an anti-theft assembly, the inside of the anti-theft box is fixedly connected with a transformer body, the top end of the transformer body is fixedly connected with an installation block, and the installation block is fixedly connected with a power supply. A wire is fixedly connected to the right end of the mutual inductor body, two limiting blocks are fixedly connected to the exterior of the anti-theft box, filter screens are slidably connected to the interiors of the close sides of the two limiting blocks, pulling rods are slidably connected to the inner walls of the left side and the right side of each limiting block, and the pulling rods are sleeved with first strong springs. According to the transformer, the interior of the transformer body can be cooled through the cooling pipe, hot air can be exhausted from holes formed in the filter screen through the filter screen, it is guaranteed that the transformer works within a certain working temperature range, sensitive electronic assemblies are protected, and the service life of the transformer is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of current transformers, in particular to a current transformer with an anti-electricity theft function. Background Art

[0002] A current transformer is an instrument that works on the principle of electromagnetic induction and is used to convert high-level current into low-level current for easy measurement. A current transformer with anti-theft function can effectively prevent illegal theft of electricity and ensure the accuracy and safety of power system measurement. If the readings of a current transformer or its related circuits can be easily tampered with, individuals or organizations may try to modify these devices to reduce their electricity bills, causing huge losses to power companies and affecting the normal operation of the power grid.

[0003] After searching, the Chinese patent document announcement number is: CN211858391U. The utility model belongs to the technical field of current transformers, and is particularly a current transformer with an anti-electricity theft function, including a transformer body, the interior of the transformer body has a through hole for the live wire to pass through, both ends of the transformer body are fixedly connected with a protective cover, the inner wall of the protective cover is fixedly connected with a fixing cylinder, the fixing cylinder extends to the inside of the through hole, a first through hole is opened inside the fixing cylinder, and the inner wall of the first through hole between the two annular baffles is evenly fixedly connected with four springs; the wire is limitedly clamped by four rubber blocks elastically connected to the fixing cylinder through the springs, avoiding the trouble of squeezing the insulating sleeve into the through hole, increasing the distance between the wire and the inner wall of the through hole, reducing the squeezing force on the wire, thereby preventing the wire from being squeezed too much and affecting the normal use of the wire.

[0004] The above patent mentioned in the beneficial effects that "when in use, the staff screws the fixing tube to the inside of the through hole through the thread ring, so that both ends of the transformer body are located in the fixing groove, and then welds the protective cover and the transformer body to increase the firmness between the protective cover and the transformer body. The staff passes the wire through the second through hole into the clamping groove, and the four rubber blocks elastically connected to the fixing tube through the spring in the cavity limit the clamping of the wire, avoiding the trouble of squeezing the insulating sleeve into the through hole and squeezing the wire into the insulating sleeve. The spring buffers the wire, reducing the squeezing force on the wire, thereby preventing the wire from being squeezed due to the wire. The wire is squeezed too hard and the normal use of the wire is affected. At the same time, the two annular baffles fixed in the first through hole block the spring and the opening of the first through hole, reducing the gap between the through hole and the wire, avoiding the situation where the thief maliciously damages the spring to steal electricity. It can limit the wire and prevent electricity theft while ensuring the normal use of the wire, and has strong practicality. However, when the current transformer is working normally, it will generate heat due to the resistance of the coil, which will cause the temperature of the transformer to rise, accelerate the aging process, and shorten the life of the equipment. Therefore, a current transformer with anti-electricity theft function is proposed to solve the above problems. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a current transformer with an anti-electricity theft function, aiming to improve the problem in the prior art that when the current transformer is working, heat is generated due to the resistance of the coil, resulting in an increase in the temperature of the transformer.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A current transformer with an anti-electricity theft function comprises an anti-theft box, the front side of the anti-theft box is rotatably connected with an anti-theft component, the interior of the anti-theft box is fixedly connected with a transformer body, the top of the transformer body is fixedly connected with a mounting block, the right end of the transformer body is fixedly connected with a wire, the exterior of the anti-theft box is fixedly connected with two limit blocks, the adjacent sides of the two limit blocks are internally slidably connected with a filter screen, the left and right inner walls of the limit blocks are both slidably connected with a pull rod, the outer sleeve of the pull rod is provided with a strong spring, the adjacent sides of the plurality of pull rods are fixedly connected with a baffle, the adjacent sides of the plurality of baffles are fixedly connected with a clamping rod, the left and right inner walls of the limit blocks are both provided with a chamber, and the interior of the transformer body is provided with a cooling pipe;

[0008] As a further description of the above technical solution:

[0009] A receiving hole is provided on the right side of the anti-theft box, and a plurality of sliding rods are slidably connected to the inner wall of the receiving hole, and a clamping block is fixedly connected to the adjacent sides of the plurality of sliding rods, and a baffle is fixedly connected to the adjacent sides of the plurality of sliding rods, and a plurality of sliding holes are provided inside the right side of the anti-theft box, and a strong spring 2 is arranged inside the sliding hole;

[0010] As a further description of the above technical solution:

[0011] The anti-theft assembly comprises an opening door, a handle is fixedly connected to the front side of the opening door, a password lock is arranged on the front side of the opening door, and the rear side of the opening door is rotatably connected to the front side of the anti-theft box;

[0012] As a further description of the above technical solution:

[0013] A pull plate is fixedly connected to the far side of each of the plurality of pull rods, and one side of the pull plate is in contact with one side of the limit block;

[0014] As a further description of the above technical solution:

[0015] The outside of the mounting block is fixedly connected to the inside of the top of the anti-theft box, and one side of the filter screen is in contact with the outside of the transformer body;

[0016] As a further description of the above technical solution:

[0017] One end of the strong spring 1 is fixedly connected to one side of the baffle, and the other end of the strong spring 1 is fixedly connected to one side of the interior of the chamber;

[0018] As a further description of the above technical solution:

[0019] The outer portion of the baffle is slidably connected to the inner portion of the chamber, and the outer portion of one side of the engaging rod is engaged with the inner portion of one side of the filter screen;

[0020] As a further description of the above technical solution:

[0021] One side of the clamping block contacts the interior of the accommodating hole, and the exterior of the baffle is slidably connected to the interior of the sliding hole.

[0022] The utility model has the following beneficial effects:

[0023] 1. In the utility model, the interior of the transformer body can be cooled by the cooling pipe, and the filter can discharge the hot air from the holes of the filter, so as to ensure that the transformer works within a certain operating temperature range, protect sensitive electronic components, and extend the service life of the transformer.

[0024] 2. In the utility model, the force is transmitted to the clamping block by the elastic force of the strong spring 2, thereby realizing the clamping force, fixing the line more firmly, and being adaptable to a variety of wires with different diameters, thereby increasing the versatility of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a three-dimensional schematic diagram of a current transformer with an anti-electricity theft function proposed by the utility model;

[0026] Figure 2 This is a schematic diagram of the anti-theft box structure of the current transformer with anti-electricity theft function proposed by the utility model;

[0027] Figure 3 This is a schematic diagram of the installation block structure of the current transformer with anti-electricity theft function proposed by the utility model;

[0028] Figure 4 This is a schematic diagram of the baffle structure of the current transformer with anti-electricity theft function proposed by the utility model;

[0029] Figure 5 for Figure 3 A in the enlarged view;

[0030] Figure 6 This is a schematic diagram of the cooling tube structure of the current transformer with anti-electricity theft function proposed by the utility model;

[0031] Figure 7 This is a schematic diagram of the clamping block structure of the current transformer with anti-electricity theft function proposed by the utility model.

[0032] Legend:

[0033] 1. Anti-theft box; 2. Open the door; 3. Transformer body; 4. Mounting block; 5. Wire; 6. Limit block; 7. Filter; 8. Pull rod; 9. Powerful spring 1; 10. Baffle; 11. Clamping rod; 12. Chamber; 13. Pull plate; 14. Cooling pipe; 15. Receiving hole; 16. Sliding rod; 17. Clamping block; 18. Baffle; 19. Sliding hole; 20. Powerful spring 2. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] Reference Figure 1 , Figure 3 and Figure 5 The utility model provides an embodiment of a current transformer with an anti-electricity theft function, comprising an anti-theft box 1 as a main box structure for protecting the current transformer and preventing illegal operation, the front side of the anti-theft box 1 is rotatably connected with an anti-theft component, the anti-theft component comprises an opening door 2 for closing and opening the anti-theft box 1, the front side of the opening door 2 is fixedly connected with a handle for easy opening, the front side of the opening door 2 is provided with a password lock to enhance security, the rear side of the opening door 2 is rotatably connected to the front side of the anti-theft box 1, the interior of the anti-theft box 1 is fixedly connected with a transformer body 3 which is a core component of the current transformer, the top of the transformer body 3 is fixedly connected with a mounting block 4 for stabilizing the transformer body 3, the outside of the mounting block 4 is fixedly connected to the top of the anti-theft box 1, the right end of the transformer body 3 is fixedly connected with a wire 5 for connecting the circuit and transmitting the signal, the outside of the anti-theft box 1 is fixedly connected with two limit blocks 6, the adjacent side of the two limit blocks 6 is internally slidably connected with a filter 7 for limiting the position of the filter 7, and one side of the filter 7 is in contact with the outside of the transformer body 3 for heat dissipation and dust prevention.

[0036] Reference Figure 4 , Figure 5 and Figure 6 The inner walls on both sides of the limit block 6 are slidably connected with a pull rod 8, and the outer sleeve of the pull rod 8 is provided with a strong spring 9 for providing elastic force to achieve the reset of the pull rod 8 or maintain the pulling force, and the adjacent sides of the multiple pull rods 8 are fixedly connected with a baffle 10 for limiting the movement of the pull rod 8 and the subsequent connected components, and the adjacent sides of the multiple baffles 10 are fixedly connected with a clamping rod 11, and the outer side of one side of the clamping rod 11 is clamped with the inner side of one side of the filter screen 7 for disassembling and fixing the filter screen 7, and the inner walls on both sides of the limit block 6 are A chamber 12 is opened, one end of a strong spring 9 is fixedly connected to one side of the baffle 10 to provide a restoring force when the baffle 10 moves, the other end of the strong spring 9 is fixedly connected to one side of the interior of the chamber 12, the outside of the baffle 10 is slidably connected to the inside of the chamber 12, and the far sides of multiple pull rods 8 are fixedly connected with pull plates 13 as an operating interface for users to manually pull, one side of the pull plate 13 is in contact with one side of the limit block 6, and a cooling pipe 14 is arranged inside the transformer body 3 to maintain the transformer at a suitable working temperature.

[0037] Reference Figure 2 and Figure 7A receiving hole 15 is provided on the right side of the anti-theft box 1, and a plurality of sliding rods 16 are slidably connected to the inner wall of the receiving hole 15 for providing a connecting force. A clamping block 17 is fixedly connected to the adjacent side of the plurality of sliding rods 16 for fixing the wire 5. One side of the clamping block 17 is in contact with the inside of the receiving hole 15, and a baffle 18 is fixedly connected to the adjacent side of the plurality of sliding rods 16. A plurality of sliding holes 19 are provided inside the right side of the anti-theft box 1, and the outer part of the baffle 18 is slidably connected to the inside of the sliding hole 19, and a strong spring 20 is arranged inside the sliding hole 19.

[0038] Working principle: first, install the mounting block 4 at the designated position by tightening the bolts, then enter the password to open the door 2, and then the heat generated by the transformer body 3 during operation can be reduced through the cooling pipe 14, and then the hot air will be dissipated from the holes opened on the filter screen 7 to ensure that the transformer body 3 works at a suitable temperature. When the filter screen 7 is covered with dust and needs to be replaced or cleaned, you only need to pull the pull plate 13, and the pull plate 13 will drive the pull rod 8 to move, and then the movement of the pull rod 8 will cause the baffle 10 to force the strong spring 9, and the movement of the baffle 10 will also make the engagement The rod 11 moves and disengages from the inside of the filter 7, so that the filter 7 is no longer restricted and can be taken out. The outer material of the filter 7 is a flexible composite material, and after the strong spring 1 9 is subjected to force, a rebound force will be generated. This rebound force is the force for locking the filter 7 after installation. When the wire 5 is placed on the adjacent side of multiple clamping blocks 17, the clamping block 17 will be subjected to force, and then the sliding rod 16 will be driven to make the baffle 18 slide inside the sliding hole 19, which will cause the strong spring 20 to be subjected to force, and a rebound force will be generated under the force of the strong spring 20. This rebound force is the force for fixing the wire 5.

[0039] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A current transformer with an anti-theft function, comprising an anti-theft box (1), characterized in that: The front side of the anti-theft box (1) is rotatably connected to an anti-theft component, the interior of the anti-theft box (1) is fixedly connected to a transformer body (3), the top of the transformer body (3) is fixedly connected to a mounting block (4), the right end of the transformer body (3) is fixedly connected to a wire (5), the exterior of the anti-theft box (1) is fixedly connected to two limit blocks (6), the adjacent sides of the two limit blocks (6) are slidably connected to a filter screen (7), the left and right inner walls of the limit blocks (6) are slidably connected to a pull rod (8), the outer sleeve of the pull rod (8) is provided with a strong spring (9), the adjacent sides of the plurality of pull rods (8) are fixedly connected to a baffle (10), the adjacent sides of the plurality of baffles (10) are fixedly connected to a locking rod (11), the left and right inner walls of the limit blocks (6) are provided with chambers (12), and the interior of the transformer body (3) is provided with a cooling pipe (14).

2. The current transformer with anti-electricity theft function according to claim 1 is characterized in that: The right side of the anti-theft box (1) is provided with a receiving hole (15), the inner wall of the receiving hole (15) is slidably connected to a plurality of sliding rods (16), the adjacent sides of the plurality of sliding rods (16) are fixedly connected to a clamping block (17), the adjacent sides of the plurality of sliding rods (16) are fixedly connected to a baffle plate (18), the right side of the anti-theft box (1) is provided with a plurality of sliding holes (19), and a strong spring 2 (20) is arranged inside the sliding hole (19).

3. The current transformer with anti-electricity theft function according to claim 1 is characterized in that: The anti-theft component comprises an opening door (2), the front side of the opening door (2) is fixedly connected to a handle, the front side of the opening door (2) is provided with a password lock, and the rear side of the opening door (2) is rotatably connected to the front side of the anti-theft box (1).

4. The current transformer with anti-electricity theft function according to claim 1 is characterized in that: A pull plate (13) is fixedly connected to the far side of each of the plurality of pull rods (8), and one side of the pull plate (13) is in contact with one side of the limit block (6).

5. The current transformer with anti-electricity theft function according to claim 1, characterized in that: The outside of the mounting block (4) is fixedly connected to the inside of the top of the anti-theft box (1), and one side of the filter screen (7) is in contact with the outside of the transformer body (3).

6. The current transformer with anti-electricity theft function according to claim 1, characterized in that: One end of the strong spring (9) is fixedly connected to one side of the baffle (10), and the other end of the strong spring (9) is fixedly connected to one side inside the chamber (12).

7. The current transformer with anti-electricity theft function according to claim 1, characterized in that: The outside of the baffle (10) is slidably connected to the inside of the chamber (12), and the outside of one side of the engaging rod (11) is engaged with the inside of one side of the filter screen (7).

8. The current transformer with anti-electricity theft function according to claim 2 is characterized in that: One side of the clamping block (17) contacts the inside of the accommodating hole (15), and the outside of the baffle (18) is slidably connected to the inside of the sliding hole (19).

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