Current transformer with quick disassembly and assembly structure

Abstract

The utility model discloses a current transformer with a quick disassembly and assembly structure, which comprises a fixing assembly, a threaded rod is in threaded connection with the outer wall of one side of the top of the fixing assembly, a transformer body is welded at the top end of the threaded rod, limiting assemblies are integrally formed on the outer walls of the two sides of the transformer body, and a cover plate assembly is arranged on the outer wall of one side of the top of the transformer body. Limiting holes are formed in the outer walls of the two sides of the mutual inductor body. The threaded rod and the threaded hole are in threaded connection, the difficulty of disassembly and assembly between the transformer body and the support can be reduced, a worker can conveniently and rapidly disassemble the current transformer when maintaining the current transformer, daily overhaul and maintenance of the current transformer are facilitated, the lead screw piece is rotated, the piston plate extrudes the hydraulic medium in the cavity, and the current transformer can be conveniently and rapidly disassembled. And then the hydraulic medium enters the rubber bag sleeve, so that the rubber bag sleeve expands, the rubber bag sleeve tightly wraps the cable, the sealing performance between the cable and the mutual inductor body is improved, and external factors are prevented from influencing detection of the mutual inductor body on the cable.

Description

Technical Field

[0001] The utility model relates to the technical field of current transformers, in particular to a current transformer with a quick disassembly and assembly structure. Background Art

[0002] The current in power generation, transformation, transmission, distribution and consumption lines varies greatly, ranging from a few amperes to tens of thousands of amperes. In order to facilitate measurement, protection and control, it needs to be converted into a relatively uniform current. In addition, the voltage on the line is generally high, so it is very dangerous to measure directly. The current transformer plays the role of current conversion and electrical isolation; most of the existing current transformers are mostly ring-shaped.

[0003] For example, a current transformer with application number CN201810941714.0 and authorization announcement date 20210115 includes a current transformer body, an upper current transformer fixing ring is provided on the current transformer body, a lower current transformer fixing ring is provided below the upper current transformer fixing ring, an arc groove A is provided on one side of the top of the upper current transformer fixing ring, an arc groove B is provided on the other side of the top of the upper current transformer fixing ring, a temperature sensor is provided on one side of the front of the upper current transformer fixing ring, a pressure sensor is provided on the other side of the front of the upper current transformer fixing ring, a bottom fixing plate is provided on the top of the upper current transformer fixing ring, an explosion-proof device is provided on the bottom fixing plate, an explosion-proof device protective rubber sleeve is provided on the outside of the explosion-proof device, and a wireless transceiver is provided on one side of the explosion-proof device and located at the top of the upper current transformer fixing ring. The present invention transforms the current transformer in the prior art to make it more practical and convenient, and the measurement is more comprehensive, and it is suitable for various measurements and statistics of cable currents and other data.

[0004] When installing a current transformer, it is mostly installed by bolts. The bolts need to be removed when taking it out, and when it is disassembled and installed again, this installation method is not only time-consuming, but also when disassembled and reinstalled, the original threaded holes will affect the secondary fixation of the current transformer. Therefore, it is urgent to design a current transformer with a quick disassembly and assembly structure to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a current transformer with a quick disassembly and assembly structure to solve the above-mentioned deficiencies in the prior art.

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

[0007] A current transformer with a quick disassembly and assembly structure includes a fixing component. One side outer wall of the top of the fixing component is threadedly connected with a threaded rod, and the top end of the threaded rod is welded with a current transformer body. Limiting components are integrally formed on both outer walls of the current transformer body. A cover plate component is arranged on one side outer wall of the top of the current transformer body. Limiting holes are opened on both outer walls of the current transformer body. The fixing component includes a bracket. Through holes are opened on both outer walls of the top of the bracket. A threaded hole is opened at the center of the top outer wall of the bracket. The threaded rod is threadedly connected inside the threaded hole.

[0008] Furthermore, the cover plate component includes an installation shell. An installation groove is arranged inside the installation shell, and two connecting plates are slidably connected inside the installation groove.

[0009] Furthermore, a plug is integrally formed on one side outer wall of the connecting plate, and one end of the plug is inserted inside the limiting hole.

[0010] Furthermore, an adjusting bolt is installed inside the installation shell through a bearing, and a gear is installed at one end of the adjusting bolt through a flat key.

[0011] Furthermore, a rack block is integrally formed on one side outer wall of the connecting plate, and the rack block meshes with the gear. One end of the rack block is installed with a connecting spring through a bolt, and one end of the connecting spring is in contact with the connecting plate.

[0012] Furthermore, the limiting component includes an installation cylinder. A shell is integrally formed on one side outer wall of the installation cylinder, and a cavity is arranged between the shell and the installation cylinder. A rubber bladder sleeve is arranged inside the installation cylinder.

[0013] Furthermore, a screw rod part is installed on one side outer wall of the shell through a bearing, and a piston plate is threadedly connected to the outside of the screw rod part.

[0014] In the above technical solution, for a current transformer with a quick disassembly and assembly structure provided by the present utility model, the beneficial effects are as follows:

[0015] (1) By providing the threaded rod and the threaded hole, and the threaded connection between the threaded rod and the threaded hole, the difficulty of disassembly and assembly between the current transformer body and the bracket can be reduced, which is convenient for workers to quickly remove the current transformer when repairing the current transformer, and is beneficial to the daily inspection and maintenance of the current transformer.

[0016] (2) By setting a limit assembly, when the cable passes through the device, the screw rod can be rotated to make the piston plate squeeze the hydraulic medium inside the cavity, and then the hydraulic medium will enter the rubber bag sleeve, causing the rubber bag sleeve to expand, so that the rubber bag sleeve tightly wraps the cable, so that the sealing between the cable and the transformer body is improved, preventing external factors from affecting the transformer body's detection of the cable, and the limit assembly can tightly clamp the cable, making the cable not easily pulled, and can prevent the cable from moving inside the transformer body, causing the cable to be damaged due to friction.

[0017] (3) Through the provided limit assembly, when the internal structure of the transformer body needs to be repaired, the adjusting bolt can be rotated to make the gear lead the two rack blocks to move toward each other, so that the connecting plate leads the plug block to retract into the installation groove, so that the restriction between the installation shell and the transformer body is released, so that the worker can quickly disassemble the transformer body, which is convenient for the worker to replace or repair the internal structure of the transformer body later. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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 will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0019] Figure 1 The present invention provides an overall structural diagram of a current transformer with a quick disassembly and assembly structure according to an embodiment of the present invention.

[0020] Figure 2 The present invention is a schematic diagram of a fixing assembly structure provided in accordance with an embodiment of a current transformer with a quick disassembly and assembly structure.

[0021] Figure 3 The present invention is a schematic diagram of the structure of a limiter assembly provided in an embodiment of a current transformer with a quick disassembly and assembly structure.

[0022] Figure 4 The present invention is a schematic structural diagram of a cover plate assembly provided in an embodiment of a current transformer with a quick disassembly and assembly structure.

[0023] Description of reference numerals:

[0024] 1. Fixed component; 2. Current transformer body; 3. Threaded rod; 4. Limiting component; 5. Limiting hole; 6. Cover plate component; 7. Bracket; 8. Through hole; 9. Threaded hole; 10. Installation cylinder; 11. Rubber bladder sleeve; 12. Shell; 13. Cavity; 14. Lead screw component; 15. Piston plate; 16. Installation shell; 17. Installation groove; 18. Adjusting bolt; 19. Gear; 20. Rack block; 21. Connecting spring; 22. Connecting plate; 23. Insert block. Detailed implementation manner

[0025] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0026] As Figures 1-4 shown, a current transformer with a quick disassembly and assembly structure provided by an embodiment of the present invention includes a fixed component 1. One side outer wall of the top of the fixed component 1 is threadedly connected with a threaded rod 3, and the top end of the threaded rod 3 is welded with a current transformer body 2. Limiting components 4 are integrally formed on both outer walls of the current transformer body 2. A cover plate component 6 is provided on one side outer wall of the top of the current transformer body 2. Limiting holes 5 are opened on both outer walls of the current transformer body 2. The fixed component 1 includes a bracket 7. Through holes 8 are opened on both outer walls of the top of the bracket 7. A threaded hole 9 is opened at the center of the outer wall of the top of the bracket 7. The threaded rod 3 is threadedly connected inside the threaded hole 9.

[0027] Specifically, in this embodiment, it includes a fixed component 1. One side outer wall of the top of the fixed component 1 is threadedly connected with a threaded rod 3, and the top end of the threaded rod 3 is welded with a current transformer body 2. Limiting components 4 are integrally formed on both outer walls of the current transformer body 2. A cover plate component 6 is provided on one side outer wall of the top of the current transformer body 2. Limiting holes 5 are opened on both outer walls of the current transformer body 2. The limiting holes 5 facilitate the fixing of the cover plate component 6 at the top of the current transformer body 2. The fixed component 1 includes a bracket 7. Through holes 8 are opened on both outer walls of the top of the bracket 7. A threaded hole 9 is opened at the center of the outer wall of the top of the bracket 7. The threaded connection between the threaded rod 3 and the threaded hole 9 can reduce the difficulty of disassembly and assembly between the current transformer body 2 and the bracket 7, facilitate the worker to quickly remove the current transformer during the maintenance of the current transformer, and is beneficial to the daily inspection and maintenance of the current transformer. The threaded rod 3 is threadedly connected inside the threaded hole 9.

[0028] For a current transformer with a quick disassembly and assembly structure provided by the present invention, the threaded connection between the threaded rod 3 and the threaded hole 9 can reduce the difficulty of disassembly and assembly between the current transformer body 2 and the bracket 7, facilitate the worker to quickly remove the current transformer during the maintenance of the current transformer, and is beneficial to the daily inspection and maintenance of the current transformer.

[0029] In an embodiment provided by the present invention, as Figure 4As shown in the figure, the cover plate assembly 6 includes a mounting shell 16. An installation groove 17 is provided inside the mounting shell 16. Two connecting plates 22 are slidably connected inside the installation groove 17. One side outer wall of the connecting plate 22 is integrally formed with a plug 23. One end of the plug 23 is inserted into the limiting hole 5. An adjusting bolt 18 is installed inside the mounting shell 16 through a bearing. One end of the adjusting bolt 18 is installed with a gear 19 through a flat key. One side outer wall of the connecting plate 22 is integrally formed with a rack block 20. The rack block 20 meshes with the gear 19. One end of the rack block 20 is installed with a connecting spring 21 through a bolt. When the adjusting bolt 18 is not stressed, under the action of the connecting spring 21, the connecting plate 22 will drive the plug 23 to move, so that the plug 23 is inserted into the limiting hole 5, so that the mounting shell 16 is fixed to the current transformer body 2, and one end of the connecting spring 21 is in contact with the connecting plate 22.

[0030] In another embodiment provided by the present invention, as Figure 3 shown in the figure, the limiting component 4 includes a mounting cylinder 10. One side outer wall of the mounting cylinder 10 is integrally formed with a housing 12. A cavity 13 is provided between the housing 12 and the mounting cylinder 10. A rubber bladder sleeve 11 is provided inside the mounting cylinder 10. One side outer wall of the housing 12 is installed with a screw rod member 14 through a bearing. A piston plate 15 is threadedly connected to the outside of the screw rod member 14. By rotating the screw rod member 14, the piston plate 15 squeezes the hydraulic medium inside the cavity 13. Then the hydraulic medium will enter the rubber bladder sleeve 11, so that the rubber bladder sleeve 11 expands, so that the rubber bladder sleeve 11 tightly wraps the cable, improving the sealing performance between the cable and the current transformer body 2, fixing the cable, making the cable not easily pulled, and preventing the cable from moving inside the current transformer body 2, resulting in damage to the cable due to friction.

[0031] Embodiment 1

[0032] A current transformer with a quick disassembly and assembly structure includes a fixing component 1. A threaded rod 3 is threadedly connected to one side outer wall of the top of the fixing component 1. The top end of the threaded rod 3 is welded with a current transformer body 2. Limiting components 4 are integrally formed on both outer walls of the current transformer body 2. A cover plate assembly 6 is provided on one side outer wall of the top of the current transformer body 2. Limiting holes 5 are provided on both outer walls of the current transformer body 2. The limiting holes 5 facilitate the fixing of the cover plate assembly 6 on the top of the current transformer body 2. The fixing component 1 includes a bracket 7. Through holes 8 are provided on both outer walls of the top of the bracket 7. A threaded hole 9 is provided at the center of the outer wall of the top of the bracket 7. The threaded rod 3 and the threaded hole 9 are in threaded connection, which can reduce the difficulty of disassembly and assembly between the current transformer body 2 and the bracket 7, facilitate the worker to quickly remove the current transformer when repairing the current transformer, and is beneficial to the daily inspection and maintenance of the current transformer. The threaded rod 3 is threadedly connected inside the threaded hole 9.

[0033] Embodiment 2

[0034] This embodiment makes further limitations on the basis of Embodiment 1. Among them, the cover plate assembly 6 includes a mounting shell 16. An installation groove 17 is provided inside the mounting shell 16. Two connecting plates 22 are slidably connected inside the installation groove 17. One side outer wall of the connecting plate 22 is integrally formed with an insertion block 23. One end of the insertion block 23 is inserted into the limiting hole 5. An adjusting bolt 18 is installed inside the mounting shell 16 through a bearing. One end of the adjusting bolt 18 is installed with a gear 19 through a flat key. One side outer wall of the connecting plate 22 is integrally formed with a rack block 20. The rack block 20 meshes with the gear 19. One end of the rack block 20 is installed with a connecting spring 21 through a bolt. When the adjusting bolt 18 is not stressed, under the action of the connecting spring 21, the connecting plate 22 will drive the insertion block 23 to move, so that the insertion block 23 is inserted into the limiting hole 5, so that the mounting shell 16 is fixed to the current transformer body 2, and one end of the connecting spring 21 is in contact with the connecting plate 22; the limiting component 4 includes a mounting cylinder 10. One side outer wall of the mounting cylinder 10 is integrally formed with a housing 12. A cavity 13 is provided between the housing 12 and the mounting cylinder 10. A rubber bladder sleeve 11 is provided inside the mounting cylinder 10. One side outer wall of the housing 12 is installed with a screw rod member 14 through a bearing. A piston plate 15 is threadedly connected to the outside of the screw rod member 14. By rotating the screw rod member 14, the piston plate 15 squeezes the hydraulic medium inside the cavity 13. Then the hydraulic medium will enter the rubber bladder sleeve 11, so that the rubber bladder sleeve 11 expands, so that the rubber bladder sleeve 11 tightly wraps the cable, so that the sealing performance between the cable and the current transformer body 2 is improved, so that the cable is fixed, so that the cable is not easily pulled, and it can prevent the cable from moving inside the current transformer body 2, resulting in damage to the cable due to friction.

[0035] Working principle: When using this device, the bolt can be passed through the through hole 8 so that the bracket 7 is fixed on structures such as walls. Then the worker passes the cable through the current transformer body 2. Subsequently, the worker can rotate the screw rod member 14 so that the piston plate 15 squeezes the hydraulic medium inside the cavity 13. Then the hydraulic medium will enter the rubber bladder sleeve 11, so that the rubber bladder sleeve 11 expands, so that the rubber bladder sleeve 11 tightly wraps the cable, so that the sealing performance between the cable and the current transformer body 2 is improved, so that the cable is fixed, so that the cable is not easily pulled, and it can prevent the cable from moving inside the current transformer body 2, resulting in damage to the cable due to friction. When subsequent maintenance of the current transformer body 2 is required, the current transformer body 2 can be rotated so that the threaded rod 3 is separated from the threaded hole 9, so that the current transformer body 2 is separated from the bracket 7. Then the worker rotates the adjusting bolt 18 again, so that the gear 19 drives the two rack blocks 20 to move towards each other, so that the connecting plate 22 drives the insertion block 23 to retract into the installation groove 17, so that the restriction between the mounting shell 16 and the current transformer body 2 is released, realizing the rapid disassembly of the current transformer body 2 by the worker, facilitating the worker to replace or repair the internal structure of the current transformer body 2 subsequently.

[0036] Only some exemplary embodiments of the present utility model are described above by way of illustration. Without doubt, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present utility model. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present utility model.

Claims

1. A current transformer with a quick disassembly structure, comprising a fixing assembly (1), characterized in that: The outer wall on one side of the top of the fixing component (1) is threadedly connected to a threaded rod (3), and the top of the threaded rod (3) is welded to a transformer body (2), the outer walls on both sides of the transformer body (2) are integrally formed with limit assemblies (4), the outer wall on one side of the top of the transformer body (2) is provided with a cover plate assembly (6), and the outer walls on both sides of the transformer body (2) are provided with limit holes (5), the fixing component (1) comprises a bracket (7), the outer walls on both sides of the top of the bracket (7) are provided with through holes (8), the center of the outer wall on the top of the bracket (7) is provided with a threaded hole (9), and the threaded rod (3) is threadedly connected inside the threaded hole (9).

2. A current transformer with a quick disassembly structure according to claim 1, characterized in that: The cover plate assembly (6) comprises a mounting shell (16), a mounting groove (17) is provided inside the mounting shell (16), and two connecting plates (22) are slidably connected inside the mounting groove (17).

3. A current transformer with a quick disassembly structure according to claim 2, characterized in that: An insert block (23) is integrally formed on the outer wall of one side of the connecting plate (22), and one end of the insert block (23) is inserted into the interior of the limiting hole (5).

4. A current transformer with a quick disassembly structure according to claim 2, characterized in that: An adjusting bolt (18) is installed inside the installation shell (16) via a bearing, and a gear (19) is installed at one end of the adjusting bolt (18) via a flat key.

5. The current transformer with a quick disassembly structure according to claim 4, characterized in that: A rack block (20) is integrally formed on the outer wall of one side of the connecting plate (22), and the rack block (20) is meshed with the gear (19), and a connecting spring (21) is installed on one end of the rack block (20) through a bolt, and one end of the connecting spring (21) is in contact with the connecting plate (22).

6. The current transformer with a quick disassembly structure according to claim 1, characterized in that: The limiting assembly (4) comprises a mounting tube (10), a shell (12) is integrally formed on an outer wall of one side of the mounting tube (10), a cavity (13) is provided between the shell (12) and the mounting tube (10), and a rubber bag sleeve (11) is provided inside the mounting tube (10).

7. A current transformer with a quick disassembly structure according to claim 6, characterized in that: A screw rod (14) is installed on the outer wall of one side of the housing (12) via a bearing, and the outer surface of the screw rod (14) is threadedly connected to a piston plate (15).

Images