Pluggable current transformer

Abstract

The utility model belongs to the technical field of current transformers, and discloses a plug-in current transformer. The plug-in type current transformer comprises a bottom shell, a rectangular groove is formed in the bottom shell, a partition plate is fixedly installed on the inner wall of the rectangular groove, supports are fixedly installed on the left side and the right side of the partition plate, plug plates are fixedly installed on the two supports, one end of a fastening belt is fixedly installed on the two plug plates, a rectangular hole is formed in the bottom shell, and the rectangular hole is communicated with the rectangular groove. And the rectangular holes communicate with the rectangular grooves, and rolling shafts are fixedly mounted on the inner walls of one sides of the two rectangular holes correspondingly. According to the plug-in type current transformer, the mode that the two shells are fixed in a single plug-in mode at present is replaced, the sealing efficiency of the joint of the two shells of the current transformer is improved, the situation that the shells are rapidly disassembled for internal maintenance can be achieved, the convenience of equipment installation is improved, and the stability of the equipment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of current transformers, in particular to a plug-in current transformer. Background Art

[0002] A current transformer is an instrument that converts a large primary current into a small secondary current for measurement based on the principle of electromagnetic induction. The current transformer is composed of a closed iron core and a winding. Its primary winding has very 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 the protection circuit. When the current transformer is working, its secondary circuit is always closed. Therefore, the impedance of the series coil of the measuring instrument and the protection circuit is very small, and the working state of the current transformer is close to a short circuit. The current transformer converts a large primary current into a small secondary current for measurement, and the secondary side cannot be open.

[0003] The current transformer is usually divided into two parts, the installation part and the detection part. At present, most current transformers are connected as a whole to form an integrated structure. Some are connected through the recommended connector. Although it is relatively simple to install, there are certain problems with service life and sealing. Therefore, we urgently need a plug-in current transformer to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a plug-in current transformer, which improves the problems raised in the background technology.

[0005] To achieve the above purpose, the utility model is implemented through the following technical scheme: a plug-in current transformer, including a bottom shell, a rectangular groove is opened on the bottom shell, a partition is fixedly installed on the inner wall of the rectangular groove, and brackets are fixedly installed on the left and right sides of the partition, plug-in plates are fixedly installed on two of the brackets, and one end of a fastening belt is fixedly installed on the two plug-in plates, a rectangular hole is provided on the bottom shell, and the rectangular hole and the rectangular groove are connected to each other, a roller is fixedly installed on the inner wall of one side of the two rectangular holes, the other end of the fastening belt extends outward through the rectangular hole, and the fastening belt contacts the roller, a fixing piece is fixedly installed on the outer side of the bottom shell, and the fastening belt located on the outer side is fixedly installed with the fixing piece.

[0006] Preferably, an outer shell is also provided above the bottom shell, sliding grooves are provided on the left and right sides of the lower surface of the outer shell, and a hydraulic rod is fixedly installed on the inner wall of one side of the sliding groove, a track is also provided in the sliding groove, and a plug-in rod is slidably connected to the track, the output end of the hydraulic rod is fixedly installed with the plug-in rod, and an arc rod is fixedly installed on the inner side of the plug-in rod.

[0007] Preferably, a silicone pad is fixedly installed on the arc rod, a slide rail is fixedly installed on the inner wall of the shell, and a fixed buckle is slidably connected to the slide rail, a limiting cover plate is also slidably connected on the slide rail and above the fixed buckle, an iron core is fixedly installed in the fixed buckle, and a winding is fixedly installed on the iron core.

[0008] Preferably, an annular slot plate is fixedly mounted on the outer side of the bottom shell, an annular insert plate is fixedly mounted on the outer side of the outer shell and at a position corresponding to the annular slot plate, and a placement groove is also provided on the annular slot plate.

[0009] Through the above technical solution, the present application provides a method of installing the wire so that it is wrapped around the current transformer. The current current transformer does not have a placement area, so providing a placement groove can better wrap the wire around the current transformer, thereby playing a good fixing and limiting role.

[0010] Preferably, a mounting base is provided below the bottom shell and the outer shell, and the number of the mounting bases is two, and rectangular through grooves are opened on the two mounting bases, and a linear track is fixedly installed on the rectangular through grooves.

[0011] Preferably, a straight rod is fixedly mounted on both the bottom shell and the outer shell, and a moving block is fixedly mounted on the straight rod, and the moving block is slidably connected to the linear track.

[0012] Preferably, a plug-in block is fixedly mounted on the mounting base.

[0013] Through the above technical solution, the plug-in block of the present application is composed of two mounting bases and can be adapted to a variety of plug-in blocks, thereby being adapted to the shapes of various mounting sockets, thereby increasing the applicability of the device.

[0014] By adopting the above technical solution, the beneficial effects of the utility model are:

[0015] 1. The plug-in current transformer replaces the current method of fixing the two shells by a single plug-in connection, and increases the sealing efficiency at the joints of the two shells of the current transformer. It can also realize the rapid disassembly of the shell for internal maintenance, improves the convenience of equipment installation, and improves the stability of the equipment.

[0016] 2. The plug-in current transformer increases the selectivity of the shape of the current transformer plug-in block, and can be adapted according to different mounting holes designed on different devices, thereby improving the convenience of equipment installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the installation base structure of the utility model;

[0018] Figure 2This is a schematic diagram of the bottom shell structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the shell structure of the utility model;

[0020] Figure 4 This is a schematic diagram of the rectangular hole and roller structure of the utility model.

[0021] In the figure: 1, bottom shell; 2, rectangular groove; 3, partition; 4, bracket; 5, plug-in plate; 6, fastening belt; 7, rectangular hole; 8, roller; 9, fixing piece; 10, shell; 11, sliding groove; 12, hydraulic rod; 13, track; 14, plug-in rod; 15, arc rod; 17, silicone pad; 19, slide rail; 20, fixing buckle; 21, limit cover plate; 22, iron core; 23, winding; 24, annular slot plate; 25, annular plug-in plate; 26, placement groove; 27, mounting base; 28, rectangular through groove; 29, linear track; 30, straight rod; 31, moving block; 32, plug-in block. DETAILED DESCRIPTION

[0022] 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.

[0023] See also Figure 1-4The utility model provides a technical solution: a plug-in current transformer, including a bottom shell 1, a rectangular groove 2 is opened on the bottom shell 1, a partition 3 is fixedly installed on the inner wall of the rectangular groove 2, and brackets 4 are fixedly installed on the left and right sides of the partition 3, plug-in plates 5 are fixedly installed on the two brackets 4, and one end of a fastening belt 6 is fixedly installed on the two plug-in plates 5, a rectangular hole 7 is provided on the bottom shell 1, and the rectangular hole 7 is connected to the rectangular groove 2, a roller 8 is fixedly installed on one side of the inner wall of the two rectangular holes 7, the other end of the fastening belt 6 extends outward through the rectangular hole 7, and the fastening belt 6 contacts the roller 8, and a fixed outer side of the bottom shell 1 is fixedly installed Part 9, and the fastening belt 6 located on the outside is fixedly installed with the fixing part 9, a shell 10 is also arranged above the bottom shell 1, and sliding grooves 11 are provided on both sides of the left and right sides of the lower surface of the shell 10, and a hydraulic rod 12 is fixedly installed on the inner wall of one side of the sliding groove 11, and a track 13 is also provided in the sliding groove 11, and a plug-in rod 14 is slidably connected to the track 13, the output end of the hydraulic rod 12 is fixedly installed with the plug-in rod 14, and an arc rod 15 is fixedly installed on the inner side of the plug-in rod 14, and a silicone pad 17 is fixedly installed on the arc rod 15, and a slide rail 19 is fixedly installed on the inner wall of the shell 10, and a fixed buckle 20 is slidably connected to the slide rail 19, A limited cover plate 21 is also slidably connected on the slide rail 19 and located above the fixed buckle 20. An iron core 22 is fixedly installed in the fixed buckle 20, and a winding 23 is fixedly installed on the iron core 22. An annular slot plate 24 is fixedly installed on the outer side of the bottom shell 1, and an annular plug plate 25 is fixedly installed on the outer side of the shell 10 and corresponds to the position of the annular slot plate 24. A placement groove 26 is also provided on the annular slot plate 24. In this application, the wire is wound around the current transformer due to the installation method of the wire. The current current transformer does not have a placement area. Therefore, the placement groove can better make the wire wrap around the current transformer, which plays a good role in fixing and limiting. Function, a mounting base 27 is arranged below the bottom shell 1 and the outer shell 10, and the number of the mounting bases 27 is two, a rectangular through groove 28 is opened on the two mounting bases 1, and a linear track 29 is fixedly installed on the rectangular through groove 28, a straight rod 30 is fixedly installed on the bottom shell 1 and the outer shell 10, and a moving block 31 is fixedly installed on the straight rod 30, the moving block 31 is slidably connected with the linear track 29, and a plug-in block 32 is fixedly installed on the mounting base 27. The plug-in block 32 of the present application is composed of two mounting bases 27 and can be adapted to a variety of plug-in blocks 32, so that it can adapt to the shapes of various mounting sockets, thereby increasing the applicability of the equipment.

[0024] When the plug-in current transformer is working, after the winding 23 is wound on the iron core 22, after the iron core 22 is installed with the fixing buckle 20, the fixing buckle 20 is slidably installed on the slide rail 19, and then the limiting cover plate 21 is used to contact the fixing buckle 20, and after the plug-in rod 14 on the shell 10 is in contact with the rectangular groove 2 on the bottom shell 1, the annular slot plate 24 located on the shell 10 and the bottom shell 1 is plugged with the annular plug plate 25, and the fastening belts 6 on both sides are pulled and tightened. When tightened, the fastening belts 6 will move inward and plug the plug-in rod 14 in the sliding groove 11 in the shell 10 It moves along the track 13, and the arc rod 15 is fitted and plugged into the rectangular groove 2 through the drive of the output end of the hydraulic rod 12. Because the fastening belt 6 has a certain thickness and elasticity, when the fastening belt 6 is tightened, the fastening belt 6 contacts the plug-in rod 14, and the fastening belt 6 located on the outside is clamped and limited with the corresponding fixing part 9. The straight track 29 set by the two mounting bases 27 and the moving block 31 on the straight rod 30 on the bottom shell 1 and the outer shell 10 are slidably installed, and the two plug-in blocks 32 are combined into a plug-in block 32 to complete the assembly of the current transformer.

[0025] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0026] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A plug-in current transformer, comprising a bottom shell, characterized in that: A rectangular groove is provided on the bottom shell, a partition is fixedly installed on the inner wall of the rectangular groove, and brackets are fixedly installed on the left and right sides of the partition, plug plates are fixedly installed on the two brackets, and one end of a fastening belt is fixedly installed on the two plug plates, a rectangular hole is provided on the bottom shell, and the rectangular hole and the rectangular groove are communicated with each other, a roller is fixedly installed on the inner wall of one side of the two rectangular holes, the other end of the fastening belt extends outward through the rectangular hole, and the fastening belt contacts the roller, a fixing piece is fixedly installed on the outer side of the bottom shell, and the fastening belt located on the outer side is fixedly installed with the fixing piece.

2. A plug-in current transformer according to claim 1, characterized in that: An outer shell is also provided above the bottom shell, and sliding grooves are provided on the left and right sides of the lower surface of the outer shell, and a hydraulic rod is fixedly installed on the inner wall of one side of the sliding groove. A track is also provided in the sliding groove, and a plug-in rod is slidably connected to the track. The output end of the hydraulic rod is fixedly installed with the plug-in rod, and an arc rod is fixedly installed on the inner side of the plug-in rod.

3. A plug-in current transformer according to claim 2, characterized in that: A silicone pad is fixedly installed on the arc rod, a slide rail is fixedly installed on the inner wall of the shell, and a fixed buckle is slidably connected to the slide rail, a limited cover plate is slidably connected to the slide rail and above the fixed buckle, an iron core is fixedly installed in the fixed buckle, and a winding is fixedly installed on the iron core.

4. A plug-in current transformer according to claim 3, characterized in that: An annular slot plate is fixedly installed on the outer side of the bottom shell, an annular plug plate is fixedly installed on the outer side of the outer shell and at a position corresponding to the annular slot plate, and a placement groove is also provided on the annular slot plate.

5. A plug-in current transformer according to claim 4, characterized in that: A mounting base is arranged below the bottom shell and the outer shell, and the number of the mounting bases is two. A rectangular through slot is opened on the two mounting bases, and a linear track is fixedly installed on the rectangular through slot.

6. A plug-in current transformer according to claim 5, characterized in that: A straight rod is fixedly mounted on both the bottom shell and the outer shell, and a moving block is fixedly mounted on the straight rod, and the moving block is slidably connected to the linear track.

7. The plug-in current transformer according to claim 6, characterized in that: A plug-in block is fixedly mounted on the mounting base.

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