Modular current transformer

Abstract

The utility model discloses a modularized current transformer which is characterized in that a mutual inductor is installed between positioning assemblies, side plates are arranged at the two ends of the mutual inductor, and when the mutual inductor is installed between the positioning assemblies, the side plates make contact with the surface of a front plate; and stabilizing assemblies are arranged in the side plates. Side plates on the two sides of the mutual inductor are placed between the first partition plate and the second partition plate, the thickness of the side plates is matched with the thickness of the first partition plate and the thickness of the second partition plate, and in other words, the mutual inductor is stably located between the first partition plate and the second partition plate without shaking. The mutual inductor is installed in a plug-in mode, so that the installation mode is simplified, the installation efficiency is improved, the installation stability is enhanced, and the stability and the reliability of a whole power system are improved. By pushing the extension rod, the front end of the extension rod can make contact with and extrude the push rod, so that the front end of the push rod is separated from the hole in the surface of the front plate, the mutual inductor can be pulled upwards at the moment, the purpose of conveniently disassembling the mutual inductor is achieved, the disassembling process is greatly simplified, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of current transformer technology, and specifically relates to a modular current transformer. Background Technology

[0002] Current transformers, as crucial equipment in power systems, primarily convert high currents to low currents for measurement, monitoring, and protection. Traditional current transformer designs often suffer from complex installation, difficult maintenance, and inability to adapt to complex power grid environments. With the accelerating intelligent transformation of power systems, the requirements for current transformers are becoming increasingly stringent, making modular design a new development trend. Modular design is a design method that decomposes a complex system into multiple independent modules, each with specific functions and interfaces, allowing for independent design, manufacturing, and testing. Introducing modular design into current transformers can significantly simplify installation, operation, and maintenance processes, improving the reliability and stability of the equipment.

[0003] Traditional current transformer installation methods are complex, increasing installation time and cost. Improper installation can also lead to equipment vibration or insufficient stability, affecting measurement accuracy and system reliability. Furthermore, with the trend towards intelligent and modular power systems, higher demands are being placed on the maintainability, scalability, and flexibility of current transformers. Utility Model Content

[0004] The purpose of this invention is to provide a modular current transformer to solve the problems of installation and disassembly of modular current transformers in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A modular current transformer includes a housing, an internal circuit board mounted inside the housing, positioning components at both ends of the inner wall of the housing, each positioning component comprising a first partition and a second partition, the first and second partitions being arranged side-by-side on the inner wall of the housing, a front plate being positioned between the first and second partitions, and a rear plate being positioned behind the front plate, a pushing component being mounted on the rear plate; a current transformer is mounted between the positioning components, the current transformer having side plates at both ends, the side plates contacting the surface of the front plate when the current transformer is mounted between the positioning components; a stabilizing component is located inside the side plates.

[0007] Furthermore, the thickness of the side plate matches the thickness between the first and second partitions.

[0008] Furthermore, the side panel has a raised section in the middle, and the stabilizing component is installed inside the raised section in the middle of the side panel.

[0009] Furthermore, the stabilizing component includes a positioning post fixed to the outer wall of the current transformer. A push rod is slidably installed inside the positioning post. A limiting plate is provided at one end of the push rod. A first spring is sleeved around the push rod. The first spring acts between the positioning post and the limiting plate. A hole for cooperating with the push rod is passed through the surface of the front plate. The front end of the push rod passes through the side plate.

[0010] Furthermore, the bottoms of the first and second partitions do not directly contact the outer casing surface. This non-contact with the outer casing surface creates a gap between the bottom of the first and second partitions and the outer casing surface, which is used to store and mount circuit boards, facilitating initial positioning of the circuit boards.

[0011] Furthermore, the push assembly includes an extension rod, and the outer wall of the housing is symmetrically provided with countersunk grooves. The extension rod is slidably mounted on the rear plate, passes through the countersunk grooves and the rear plate, and the tail end of the extension rod is concentrically engaged with a hole on the surface of the front plate.

[0012] Furthermore, one end of the extension rod is provided with a stop plate, and a second spring is sleeved on the extension rod, with the second spring acting between the stop plate and the rear plate.

[0013] The technical solution of this utility model has the following beneficial effects:

[0014] 1. The side plates on both sides of the current transformer are placed between the first and second partitions, and the thickness of the side plates matches the thickness of the first and second partitions. This ensures that the front-to-back position of the current transformer is stable between the first and second partitions without any shaking. The current transformer is installed using an insertion method, which simplifies the installation process, improves installation efficiency, enhances installation stability, and improves the stability and reliability of the entire power system.

[0015] 2. The current transformer is completely attached to the surface of the circuit board. Under the push of the first spring, the push rod will pop out and enter the through hole on the surface of the front board, thus stabilizing the installation of the current transformer. In this way, the space for the current transformer to move upward is restricted, and it is automatically locked under the action of the first spring.

[0016] 3. By pushing the extension rod, the front end of the extension rod will contact and squeeze the push rod, thereby causing the front end of the push rod to disengage from the hole on the surface of the front plate. At this time, the current transformer can be pulled upward, thus achieving the purpose of convenient disassembly of the current transformer, greatly simplifying the disassembly process and improving work efficiency. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the outer shell structure of this utility model.

[0020] Figure 3 This is a partial cross-sectional structural diagram of the current transformer of this utility model.

[0021] Figure 4 This is a schematic diagram of the overall cross-sectional structure of this utility model.

[0022] Figure 5 This is an enlarged view of section A of this utility model.

[0023] Reference numerals: 10, outer casing; 11, circuit board; 13, first partition; 14, second partition; 15, front plate; 16, rear plate; 20, current transformer; 21, side plate; 22, positioning post; 23, push rod; 24, limiting plate; 25, first spring; 30, countersunk groove; 31, extension rod; 32, abutment plate; 33, second spring. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0025] Example 1:

[0026] refer to Figures 1-4 A modular current transformer includes a housing 10, a circuit board 11 mounted inside the housing 10, positioning components at both ends of the inner wall of the housing 10, each positioning component including a first partition 13 and a second partition 14, the first partition 13 and the second partition 14 being arranged side by side on the inner wall of the housing 10, a front plate 15 being provided between the first partition 13 and the second partition 14; a current transformer 20 is installed between the positioning components, the current transformer 20 having side plates 21 at both ends, and when the current transformer 20 is installed between the positioning components, the side plates 21 contact the surface of the front plate 15;

[0027] In the above scheme, the circuit board 11 is first installed inside the housing 10, and then the current transformer 20 is installed inside the housing 10. The positioning components on both sides are used to mark the installation position of the current transformer 20. The current transformer 20 is placed between the positioning components, and the side plates 21 on both sides of the current transformer 20 are placed between the first partition 13 and the second partition 14. The thickness of the side plates 21 matches the thickness between the first partition 13 and the second partition 14, that is, the front-to-back position of the current transformer 20 (the front-to-back position direction is direction a in the figure) is stable between the first partition 13 and the second partition 14 without shaking, thus facilitating the stable installation of the current transformer 20. Since the side plates 21 contact the surface of the front plate 15, the left-to-right position of the current transformer 20 (the left-to-right position is direction b in the figure) is restricted between the two front plates 15. The current transformer 20 is installed using an insertion installation method, which simplifies the installation method, improves installation efficiency, enhances installation stability, and improves the stability and reliability of the entire power system.

[0028] Further reference Figures 3-5 The side plate 21 contains a stabilizing component. The side plate 21 has a raised center, and the stabilizing component is housed within this raised center. The raised center of the side plate 21 facilitates the installation of the stabilizing component.

[0029] The stabilizing component includes a positioning post 22, which is fixed to the outer wall of the current transformer 20. A push rod 23 is slidably installed inside the positioning post 22. A limiting plate 24 is provided at one end of the push rod 23. A first spring 25 is sleeved around the push rod 23. The first spring 25 acts between the positioning post 22 and the limiting plate 24. A hole for cooperating with the push rod 23 is passed through the surface of the front plate 15. The front end of the push rod 23 passes through the side plate 21.

[0030] In a further implementation, for the installation of the current transformer 20, the push rods 23 on both sides of the current transformer 20 are pressed, causing the front ends of the push rods 23 to enter the side plate 21. When the side plate 21 is fitted into the front plate 15, the push rods 23 will make close contact with the surface of the front plate 15 under the pushing force of the first spring 25, until the bottom of the current transformer 20 is completely attached to the surface of the circuit board 11. That is, the push rods 23 will pop out into the through hole in the surface of the front plate 15 under the pushing force of the first spring 25, thereby stabilizing the installation of the current transformer 20. In this way, the current transformer 20 is restricted from moving upward (the upward movement space is in direction b in the figure), thereby further improving the stability of the current transformer 20 inside the housing 10. It automatically locks under the action of the first spring 25. The protruding part in the middle of the side plate 21 provides the sliding stroke of the push rods 23. The positioning post 22 restricts the sliding position of the push rods 23. The limiting plate 24 contacts the inner side of the side plate 21 to limit the position of the push rods 23 and prevent the push rods 23 from detaching from the side plate 21.

[0031] Further reference Figures 1-4The bottoms of the first partition 13 and the second partition 14 do not directly contact the surface of the outer casing 10. The fact that the first partition 13 and the second partition 14 do not contact the surface of the outer casing 10 creates a gap between the bottom of the first partition 13 and the surface of the outer casing 10. This gap is used to store and install the circuit board 11, facilitating the initial positioning of the circuit board 11.

[0032] Example 2 (in conjunction with Example 1):

[0033] refer to Figure 4 and Figure 5 A rear plate 16 is provided behind the front plate 15, and a pushing assembly is installed on the rear plate 16. The pushing assembly includes an extension rod 31. The outer wall of the housing 10 has symmetrically opened countersunk grooves 30. The extension rod 31 is slidably installed on the rear plate 16. The extension rod 31 passes through the countersunk grooves 30 and the rear plate 16. The tail end of the extension rod 31 is concentrically engaged with a hole on the surface of the front plate 15.

[0034] In the above scheme, since the tail end of the extension rod 31 is concentrically fitted with the hole on the surface of the front plate 15, that is, the position of the extension rod 31 and the position of the push rod 23 are concentric, by pushing the extension rod 31, the front end of the extension rod 31 will contact and squeeze the push rod 23, thereby causing the front end of the push rod 23 to disengage from the hole on the surface of the front plate 15. At this time, the current transformer 20 can be pulled upward, thereby achieving the purpose of convenient disassembly of the current transformer 20, greatly simplifying the disassembly process and improving work efficiency.

[0035] Further reference Figure 5 One end of the extension rod 31 is provided with a stop plate 32, and a second spring 33 is sleeved on the extension rod 31. The second spring 33 acts between the stop plate 32 and the rear plate 16.

[0036] In a further embodiment, pushing the extension rod 31 compresses the second spring 33. Once the thrust on the extension rod 31 is released, the extension rod 31 automatically returns to its original position under the thrust of the second spring 33. This ensures that the device maintains its original state when no external force is required, improving the stability and reliability of the device.

[0037] The specific implementation process of this utility model is as follows:

[0038] The current transformer 20 is installed by placing it between the positioning components. The side plates 21 on both sides of the current transformer 20 are placed between the first partition 13 and the second partition 14. The thickness of the side plates 21 matches the thickness of the first partition 13 and the second partition 14, ensuring that the current transformer 20 is stable between the first partition 13 and the second partition 14 in the front-to-back direction (direction a in the figure) without any shaking. The side plates 21 contact the surface of the front plate 15, thus restricting the left-to-right position of the current transformer 20 (direction b in the figure) between the two front plates 15. The bottom of the current transformer 20 is completely flush against the surface of the circuit board 11. Under the force of the first spring 25, the push rod 23 will pop out and enter the through hole in the surface of the front plate 15, thereby stabilizing the installation of the current transformer 20. This restricts the upward movement space of the current transformer 20 (upward movement space is direction b in the figure).

[0039] To disassemble the current transformer 20, push the extension rod 31. The front end of the extension rod 31 will contact and squeeze the push rod 23, thereby causing the front end of the push rod 23 to disengage from the hole on the surface of the front plate 15. At this time, the current transformer 20 can be pulled upward, thus achieving the purpose of convenient disassembly of the current transformer 20.

[0040] The above embodiments are merely exemplary models of this utility model and are not intended to limit this utility model. The scope of protection of this utility model is defined by the claims. Various modifications or equivalent substitutions can be made to this utility model within its substance and scope of protection. Such modifications or equivalent substitutions should also be considered to fall within the scope of protection of this utility model.

[0041] In the description of this utility model, it should be noted that the terms "inner," "front," "rear," "left," and "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the attached circle, or the orientation or positional relationship commonly used when the utility model product is in use. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, these terms indicating orientation or positional relationship should not be construed as limitations on this utility model.

[0042] In the description of this utility model, it should be further noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, these terms can refer to a fixed connection, a detachable connection, or an integral connection between components; they can also refer to a mechanical connection or an electrical connection; or they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

Claims

1. A modular current transformer, characterized in that: Includes a housing (10), with a circuit board (11) mounted inside the housing (10). Positioning components are provided at both ends of the inner wall of the housing (10). The positioning components include a first partition (13) and a second partition (14). The first partition (13) and the second partition (14) are arranged side by side on the inner wall of the housing (10). A front plate (15) is provided between the first partition (13) and the second partition (14). A rear plate (16) is provided behind the front plate (15). A pushing component is installed on the rear plate (16). A current transformer (20) is installed between the positioning components. The current transformer (20) has side plates (21) at both ends. When the current transformer (20) is installed between the positioning components, the side plates (21) contact the surface of the front plate (15). A stabilizing component is provided inside the side plates (21).

2. A modular current transformer according to claim 1, characterized in that: The thickness of the side plate (21) matches that between the first partition (13) and the second partition (14).

3. A modular current transformer according to claim 2, characterized in that: The middle of the side plate (21) is raised, and the stabilizing component is set inside the middle of the raised part of the side plate (21).

4. A modular current transformer according to claim 3, characterized in that: The stabilizing component includes a positioning post (22) which is fixed to the outer wall of the current transformer (20). A push rod (23) is slidably installed inside the positioning post (22). A limiting plate (24) is provided at one end of the push rod (23). A first spring (25) is sleeved around the push rod (23). The first spring (25) acts between the positioning post (22) and the limiting plate (24). A hole for cooperating with the push rod (23) is passed through the surface of the front plate (15). The front end of the push rod (23) passes through the side plate (21).

5. A modular current transformer according to claim 1, characterized in that: The bottoms of the first partition (13) and the second partition (14) do not directly contact the surface of the outer shell (10).

6. A modular current transformer according to claim 4, characterized in that: The push assembly includes an extension rod (31). The outer wall of the housing (10) is symmetrically provided with countersunk grooves (30). The extension rod (31) is slidably mounted on the rear plate (16). The extension rod (31) passes through the countersunk groove (30) and the rear plate (16). The tail end of the extension rod (31) is concentrically engaged with a hole on the surface of the front plate (15).

7. A modular current transformer according to claim 6, characterized in that: One end of the extension rod (31) is provided with a stop plate (32), and a second spring (33) is sleeved on the extension rod (31). The second spring (33) acts between the stop plate (32) and the rear plate (16).

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