Current transformer with high adaptability

Abstract

The current transformer comprises a supporting plate and a transformer body, the supporting plate and the transformer body are connected through an installation assembly, a limiting groove is transversely formed in the supporting plate, a guide groove is formed in the middle of the limiting groove, the installation assembly comprises an installation plate and an installation base, and the installation base is connected with the supporting plate and the installation base. The installation plate and the mutual inductor body are fixedly installed, the end face, corresponding to the installation base, of the installation plate is provided with a square guide rod, the side, away from the installation plate, of the guide rod is fixedly provided with a limiting plate through threads, and the limiting plate and the installation plate are arranged in a spaced mode. An adjusting screw is rotationally connected to the middle of the outer side face of the mounting plate and movably sleeved with a reset spring. According to the scheme, the mutual inductor can be conveniently mounted and dismounted, the current transformer can be suitable for mutual inductors with small size differences, and the use cost of the current transformer is effectively reduced.

Description

Technical Field

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

[0002] A current transformer consists of a closed iron core and windings. It is an instrument that converts large primary current into small secondary current for measurement based on the principle of electromagnetic induction. Current transformers are widely used in smart grids and are commonly found in distribution cabinets. They are mainly used to expand the range of single-phase meters, measure single-phase line current, measure three-phase current in three-phase balanced or unbalanced lines, and sample current in reactive power controllers. They play an important role in the safe operation of power systems.

[0003] When installing a current transformer, screws are usually used to secure it. However, the space in which the transformer is installed is relatively small, making it difficult to install and remove the screws. This wastes a lot of time, reduces work efficiency, and is not conducive to the application range of the current transformer. To address this problem, we propose a current transformer with high adaptability. Utility Model Content

[0004] The purpose of the present utility model is to provide a current transformer with high adaptability, so as to solve the problem that when the existing transformer is installed, the transformer is usually fixed by screw connection, which is proposed in the above background technology. However, the space for transformer installation is relatively narrow, and it is troublesome to install and remove the screws, which wastes a lot of time, thereby reducing work efficiency and being detrimental to the application range of the current transformer.

[0005] To achieve the above objectives, the present invention provides the following technical solutions: a highly adaptable current transformer, comprising a support plate and a transformer body, wherein the support plate and the transformer body are connected via a mounting assembly, the mounting assembly being snap-fitted to the support plate, the support plate having a limit slot transversely defined thereon, a guide slot defined in the middle of the limit slot, and the guide slot and the limit slot being hollow;

[0006] The mounting assembly includes a mounting plate and a mounting seat, the mounting plate and the transformer body are fixedly installed, the end face of the mounting plate corresponding to the mounting seat is square and is provided with a guide rod, the guide rod is fixedly installed with a limit plate on the side away from the mounting plate by a thread, the limit plate and the mounting plate are spaced apart, the mounting seat is movably clamped in the guide groove and the limit groove, the middle part of the outer side surface of the mounting plate is rotatably connected with an adjusting screw, and a return spring is movably sleeved on the guide rod.

[0007] Preferably, the cross-sections of the guide groove and the limiting groove are both T-shaped, and the length of the limiting groove is smaller than the length of the support plate.

[0008] Preferably, the mounting plate and the limiting plate are parallel to each other, and the limiting plates are arranged on the upper and lower sides of the mounting plate.

[0009] Preferably, the center lines of the guide rod and the adjusting screw are parallel to each other, and the adjusting screw, the mounting plate and the mounting seat are all connected through threads.

[0010] Preferably, the guide rod and the mounting plate are rotatably connected.

[0011] Preferably, the limiting groove and the guide groove are perpendicular to each other, and the upper end of the guide groove is open.

[0012] Preferably, the width of the limiting plate is smaller than the width of the mounting plate, and the limiting plate is arranged on the upper and lower sides of the mounting seat.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. This type of current transformer with high adaptability uses a mounting assembly to fix the transformer on the support plate, and by reversing the adjusting screw, the adjusting screw drives the mounting plate to gradually approach the mounting seat. Through the connecting action of the guide rod, the limit plate gradually approaches the support plate and fits tightly with the support plate. By making the support plate and the limit plate 35 fit tightly, the position of the mounting seat on the support plate is stably fixed; similarly, by rotating the adjusting screw forward, the distance between the mounting plate and the mounting seat is increased, and the mounting plate is away from the mounting seat, thereby driving the limit plate close to the mounting seat. In this state, it is easier for the mounting assembly to slide inside the guide groove and the limit groove on the support plate, making the disassembly of the transformer more convenient.

[0015] 2. This type of current transformer with high adaptability can be easily disassembled and installed by simply fixing the current transformer on the mounting base. It is applicable to transformers with similar sizes, effectively reducing the cost of using the current transformer. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of the utility model from a first perspective;

[0017] Figure 2 This is a schematic diagram of the structure of the utility model from a second perspective;

[0018] Figure 3 This is a schematic diagram of the installation structure of the sliding seat and mutual inductor of the utility model;

[0019] Figure 4 It is a schematic diagram of the half-section structure of the present utility model.

[0020] In the figure: 1. Support plate; 11. Limiting groove; 12. Guide groove; 2. Transformer body; 3. Mounting assembly; 31. Mounting plate; 32. Guide rod; 33. Adjusting screw; 34. Return spring; 35. Limiting plate. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in 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.

[0022] Example: See Figure 1-4 The present invention provides a technical solution: a current transformer with high adaptability, which is mainly aimed at improving the problem that when installing existing transformers, the transformer is usually fixed by screw connection. However, the space for transformer installation is relatively small, which is troublesome when installing and removing screws, and wastes a lot of time, thereby reducing work efficiency and being detrimental to the application scope of the current transformer. The specific solution is as follows: It includes a support plate 1 and a transformer body 2, wherein the support plate 1 is fixedly installed on the inner side of the cabinet of the electrical equipment. The support plate 1 and the transformer body 2 are connected by a mounting assembly 3, and the mounting assembly 3 is snapped onto the support plate 1.

[0023] Furthermore, a limit groove 11 is horizontally provided on the support plate 1, and a guide groove 12 is provided in the middle of the limit groove 11. The guide groove 12 and the limit groove 11 are hollow inside. The cross-sections of the guide groove 12 and the limit groove 11 are both T-shaped, and the length of the limit groove 11 is less than the length of the support plate 1. The limit groove 11 and the guide groove 12 are perpendicular to each other, and the upper end of the guide groove 12 is open. The provision of the guide groove 12 and the limit groove 11 facilitates the attachment of the mounting assembly 3 to the support plate 1, so that the transformer body 2 can be separated from the support plate 1 as needed, making it easier to install and disassemble the transformer body 2 and further improving the maintenance efficiency of the transformer body 2.

[0024] See also Figure 2 and Figure 3 The mounting assembly 3 includes a mounting plate 31 and a mounting base 30. The mounting plate 31 is fixedly mounted to the transformer body 2. A guide rod 32 is provided on the end surface of the mounting plate 31 corresponding to the mounting base 30. A return spring 34 is movably sleeved on the guide rod 32, and the guide rod 32 is rotatably connected to the mounting plate 31. A limit plate 35 is fixedly mounted on the side of the guide rod 32 away from the mounting plate 31 via threads. The width of the limit plate 35 is smaller than that of the mounting plate 31, and the limit plates 35 are located on the upper and lower sides of the mounting base 30.

[0025] Furthermore, the limiting plate 35 and the mounting plate 31 are spaced apart, the mounting plate 31 and the limiting plate 35 are parallel to each other, and the limiting plate 35 is provided on the upper and lower sides of the mounting plate 31. The mounting seat 30 is movably engaged with the guide groove 12 and the limiting groove 11. The provision of the guide groove 12 and the limiting groove 11 facilitates the separation of the mounting seat 30 from the support plate 1. When repairing the transformer, the transformer can be disassembled by separating the mounting seat 30 from the support plate 1, making the transformer repair operation more convenient. At the same time, after different types of transformers are installed on the mounting seat 30, the current transformer installation adaptability is improved, reducing the installation and use cost of the transformer.

[0026] See also Figure 2 and Figure 4 Among them, an adjusting screw 33 is rotatably connected to the middle of the outer side surface of the mounting plate 31, the center lines of the guide rod 32 and the adjusting screw 33 are parallel to each other, and the adjusting screw 33 and the mounting plate 31 and the mounting seat 30 are all connected by threads. When the mounting seat 30 is clamped in the limit groove 11 and guide groove 12 on the support plate 1, the distance between the mounting plate 31 and the mounting seat 30 is increased by rotating the adjusting screw 33, and the mounting plate 31 is away from the mounting seat 30, thereby driving the limit plate 35 close to the mounting seat 30. At this time, it is easier to slide the mounting assembly 3 inside the guide groove 12 and the limit groove 11 on the support plate 1, and adjust the position of the transformer according to actual installation needs; and after rotating the adjusting screw 33 in the opposite direction, the adjusting screw 33 drives the mounting plate 31 gradually close to the mounting seat 30, and through the connection action of the guide rod 32, at this time, the limit plate 35 gradually approaches the support plate 1 and fits tightly with the support plate 1. By making the support plate 1 and the limit plate 35 fit tightly, the contact friction is increased, the installation position of the current transformer can be restricted, and the installation stability of the current transformer can be further guaranteed.

[0027] Working principle: When using this highly adaptable current transformer, the transformer is fixed on the mounting base 30 by screws, and the support plate 1 is fixed on the inside of the electrical equipment cabinet by screws. It is worth noting that it is applicable to transformers with similar sizes. When fixing the transformer on the support plate 1, it is only necessary to make the mounting base 30 snap into the guide groove 12, and enter the limit groove 11 through the guide groove 12, and slide the transformer body 1 to place it at a specific position on the limit groove 11; after rotating the adjusting screw 33 in the opposite direction, the adjusting screw 33 drives the mounting plate 31 to gradually approach the mounting base 30, and the guide rod 32 is connected to the mounting plate 31. When the support plate 1 is in a closed position, the limit plate 35 is moved away from the support plate 1 and the limit plate 35 is moved away from the support plate 1. When the support plate 1 is in a closed position, the limit plate 35 is moved away from the support plate 1 and the position of the mounting seat 30 is stabilized and fixed. When the transformer is disassembled for maintenance, the adjusting screw 33 is rotated forward to increase the distance between the mounting plate 31 and the mounting seat 30. The mounting plate 31 is away from the mounting seat 30, thereby driving the limit plate 35 close to the mounting seat 30. In this state, it is easier for the mounting component 3 to slide inside the guide groove 12 and the limit groove 11 on the support plate 1, making the disassembly of the transformer more convenient and further improving the maintenance efficiency.

[0028] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A current transformer with high adaptability, comprising a support plate (1) and a transformer body (2), characterized in that: The support plate (1) and the mutual inductor body (2) are connected via a mounting assembly (3), the mounting assembly (3) is snap-fitted to the support plate (1), a limit slot (11) is transversely provided on the support plate (1), a guide slot (12) is provided in the middle of the limit slot (11), and the guide slot (12) and the limit slot (11) are hollow inside. The mounting assembly (3) includes a mounting plate (31) and a mounting seat (30), the mounting plate (31) and the transformer body (2) are fixedly mounted, the end surface of the mounting plate (31) corresponding to the mounting seat (30) is square and provided with a guide rod (32), the side of the guide rod (32) away from the mounting plate (31) is fixedly mounted with a limit plate (35) by means of a thread, the limit plate (35) and the mounting plate (31) are spaced apart, the mounting seat (30) is movably engaged with the inside of the guide groove (12) and the limit groove (11), the middle part of the outer side surface of the mounting plate (31) is rotatably connected with an adjusting screw (33), and a return spring (34) is movably sleeved on the guide rod (32).

2. The current transformer with high adaptability according to claim 1, characterized in that: The guide groove (12) and the limiting groove (11) both have a T-shaped cross-section, and the limiting groove (11) is shorter than the length of the support plate (1).

3. The current transformer with high adaptability according to claim 1, characterized in that: The mounting plate (31) and the limiting plate (35) are parallel to each other, and the limiting plate (35) is arranged on the upper and lower sides of the mounting plate (31).

4. The current transformer with high adaptability according to claim 1, characterized in that: The center lines of the guide rod (32) and the adjusting screw (33) are parallel to each other, and the adjusting screw (33), the mounting plate (31), and the mounting seat (30) are all connected via threads.

5. The current transformer with high adaptability according to claim 1, characterized in that: The guide rod (32) and the mounting plate (31) are rotatably connected.

6. The current transformer with high adaptability according to claim 1, characterized in that: The limiting groove (11) and the guide groove (12) are perpendicular to each other, and the upper end of the guide groove (12) is open.

7. The current transformer with high adaptability according to claim 1, characterized in that: The width of the limiting plate (35) is smaller than the width of the mounting plate (31), and the limiting plate (35) is arranged on the upper and lower sides of the mounting seat (30).

Images