Open-close type waterproof current transformer

Abstract

The utility model discloses an open-close type waterproof current transformer, and relates to the technical field of mutual inductors, the open-close type waterproof current transformer comprises a first mutual inductance unit and a second mutual inductance unit, the first mutual inductance unit comprises a first shell, a first bottom cover and a first magnetic core, the first magnetic core is arranged in a first cavity formed by combining the first shell and the first bottom cover and is filled and sealed through an epoxy resin layer, and sealing strips are arranged on the end faces of the first shell and the first bottom cover; the second mutual inductance unit comprises a second shell, a second bottom cover and a second magnetic core, and the second magnetic core is arranged in a second cavity formed by combining the second shell and the second bottom cover and is filled and sealed through an epoxy resin layer; the two end faces of the first mutual inductance unit and the second mutual inductance unit are oppositely combined to form a closed-loop structure. The mutual inductance unit I and the mutual inductance unit II are closed in an involution manner and are matched with the sealing strip and the epoxy resin layer, so that the sealing performance is good, and a multi-protection structure ensures that the mutual inductor is good in sealing, waterproof and dustproof capability in the use process.

Description

Technical Field

[0001] This utility model relates to the field of current transformer technology, specifically to an openable waterproof current transformer. Background Technology

[0002] A switchable current transformer is a current measuring device mainly used in power systems, industrial control, and outdoor environments. It is directly clipped onto the conductor being measured, making it particularly suitable for operating systems or situations where power outages are inconvenient. However, in outdoor environments or special conditions, it is commonly affected by humidity and dust. When used for current detection, ordinary current transformers often have poor sealing, making them prone to short circuits or poor contact due to water or dust ingress, which can affect the normal operation of the measuring equipment. Utility Model Content

[0003] The purpose of this invention is to provide a reversible waterproof current transformer, which solves the sealing problem of reversible current transformers.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an openable waterproof current transformer, comprising a first transformer unit and a second transformer unit. The first transformer unit comprises a housing, a bottom cover, and a magnetic core. The bottom cover is abutted against the concave side of the housing. The magnetic core is disposed in a cavity formed by the housing and the bottom cover and is sealed by an epoxy resin layer. Both ends of the magnetic core extend out of the cavity.

[0005] The mutual inductance unit 2 includes a housing 2, a bottom cover 2, and a magnetic core 2. The bottom cover 2 is mated to the concave side of the housing 2. The magnetic core 2 is disposed in the cavity 2 formed by the combination of the housing 2 and the bottom cover 2 and is sealed by an epoxy resin layer. The cavity 2 forms insertion ports at both ends of the magnetic core 2 to accommodate the mating ends of the magnetic core 1.

[0006] The outer peripheries of the mutual inductance unit 1 and mutual inductance unit 2 are hinged. The end faces of the mutual inductance unit 1 and mutual inductance unit 2 are mutually closed around each other. The two end faces of the mutual inductance unit 1 and mutual inductance unit 2 are mutually closed to form a closed loop structure. The two end faces of the mutual inductance unit 1 and mutual inductance unit 2 are sealed by a sealing strip. The end faces of the housing 1 and the bottom cover 1 are provided with grooves to accommodate the sealing strips. The end faces of the housing 2 and the bottom cover 2 are provided with sealing strips. The outer peripheries of the mutual inductance unit 1 and mutual inductance unit 2 are provided with locking elements to lock the closed loop of the mutual inductance unit 1 and mutual inductance unit 2. The front and rear panel ends of the housing 1 extend outward to cover the position where the mutual inductance unit 1 and mutual inductance unit 2 are closed.

[0007] Preferably, the housing is composed of three interconnected arc-shaped surfaces: an outer arc panel, a front panel, and a rear panel, and the bottom cover is bonded and fixed to the housing.

[0008] Preferably, the bottom cover has a flange on one adhesive side that mates with a recess on one concave side of the housing.

[0009] Preferably, the second housing is composed of three interconnected arc-shaped surfaces: an outer arc panel, a front panel, and a rear panel, and the second bottom cover is bonded and fixed to the second housing.

[0010] Preferably, the bottom cover has a flange on the two adhesive sides that mates with the two concave sides of the housing.

[0011] Preferably, both the first mutual inductance unit and the second mutual inductance unit have radially distributed internal threaded sleeves and locking screws on their front panels, with the locking screws threaded onto the internal threaded sleeves.

[0012] This utility model has the following beneficial effects:

[0013] This utility model features a mutual inductance unit 1, a mutual inductance unit 2, an epoxy resin layer, and a sealing strip. The mutual inductance unit 1 and the mutual inductance unit 2 are closed together, and the sealing strip and epoxy resin layer provide good sealing performance. The multiple protective structures ensure that the transformer is sealed during use, and it has good waterproof and dustproof capabilities, allowing it to be used directly outdoors. Attached Figure Description

[0014] Figure 1 This is a front view of the present utility model;

[0015] Figure 2 This is the left view of the present invention;

[0016] Figure 3 This is a diagram showing the installation status of the current transformer of this utility model;

[0017] Figure 4 This is a diagram showing the open state of the current transformer of this utility model;

[0018] Figure 5 This is a schematic diagram of the structure of the mutual inductance unit of this utility model;

[0019] Figure 6 This is a schematic diagram of the structure of the mutual inductance unit two of this utility model;

[0020] Figure 7 This is a schematic diagram of the internal structure of the current transformer of this utility model;

[0021] Figure 8 This is a schematic diagram of the shell structure of this utility model;

[0022] Figure 9 This is a schematic diagram of the second structure of the shell of this utility model.

[0023] In the diagram: 1. Mutual inductance unit one; 11. Housing one; 12. Bottom cover one; 13. Magnetic core one; 14. Groove; 2. Mutual inductance unit two; 21. Housing two; 22. Bottom cover two; 23. Magnetic core two; 24. Socket; 3. Epoxy resin layer; 4. Sealing strip; 5. Locking component; 6. Internal threaded sleeve; 7. Locking screw. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] like Figure 1-9 As shown, this utility model provides a technical solution: an openable waterproof current transformer, including a current transformer unit 1 and a current transformer unit 2. The current transformer unit 1 includes a housing 11, a bottom cover 12 and a magnetic core 13. The housing 11 is composed of three interconnected arc-shaped curved surfaces: an outer arc panel, a front panel and a rear panel, forming an integral structure. The bottom cover 12 is bonded and fixed to the housing 11. The bottom cover 12 is mated to the concave side of the housing 11. The bonding side of the bottom cover 12 is provided with a flange that mates with the recess on the concave side of the housing 11, resulting in a good connection and sealing. The magnetic core 13 is disposed in a cavity 1 formed by the combination of the housing 11 and the bottom cover 12 and is filled and sealed by an epoxy resin layer 3. Both ends of the magnetic core 13 extend out of the cavity 1.

[0026] The mutual inductance unit 2 includes a housing 21, a bottom cover 22, and a magnetic core 23. The housing 21 is composed of three interconnected arc-shaped curved surfaces: an outer arc panel, a front panel, and a rear panel, forming an integral structure. The bottom cover 22 is bonded and fixed to the housing 21. The bottom cover 22 is mated to the concave side of the housing 21. The bonding side of the bottom cover 22 has a flange that mates with the concave side of the housing 21, resulting in a good connection and sealing. The magnetic core 23 is disposed in the cavity 2 formed by the combination of the housing 21 and the bottom cover 22 and is filled and sealed by the epoxy resin layer 3. The cavity 2 has insertion ports 24 at both ends of the magnetic core 23 to accommodate the mating ends of the magnetic core 13.

[0027] The outer peripheries of mutual inductance unit 1 and mutual inductance unit 2 are hinged. The end faces of mutual inductance unit 1 and mutual inductance unit 2 are mutually sealed to achieve waterproof and dustproof purposes. The two end faces of mutual inductance unit 1 and mutual inductance unit 2 are mutually sealed to form a closed loop structure. The two end faces of mutual inductance unit 1 and mutual inductance unit 2 are sealed by sealing strip 4. The end faces of housing 11 and bottom cover 12 are provided with grooves 14 to accommodate the sealing strip 4. The end faces of housing 21 and bottom cover 22 are provided with sealing strip 4. A sealing strip 4 is provided at the end face of 2 to form a circle. The sealing strip 4 ensures the sealing of the end face around the joint. The end face of mutual inductance unit 2 is provided with a groove for embedding the sealing strip 4. The outer periphery of mutual inductance unit 1 and mutual inductance unit 2 is provided with locking member 5 to lock the closed loop of mutual inductance unit 1 and mutual inductance unit 2. When measuring the horizontally distributed conductors, mutual inductance unit 1 is located on the top. The front and rear panel ends of the housing 11 extend outward to cover the joint position of mutual inductance unit 1 and mutual inductance unit 2, so as to further prevent dust and water.

[0028] Both mutual inductance unit 1 and mutual inductance unit 2 have radially distributed internal threaded sleeves 6 and locking screws 7 on their front panels. The locking screws 7 are threaded onto the internal threaded sleeves 6. When installing the current transformer on the conductor to be tested, the current transformer is fixed by clamping it onto the conductor to be tested by the locking screws 7. Three sets of locking screws 7 and internal threaded sleeves 6 are provided.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0030] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A split waterproof current transformer, characterized in that: The mutual inductance unit one (1) comprises a shell one (11), a bottom cover one (12) and a magnetic core one (13), the bottom cover one (12) is butted on the concave side of the shell one (11), the magnetic core one (13) is arranged in the cavity one formed by the shell one (11) and the bottom cover one (12) and is filled and closed by an epoxy resin layer (3), and the two ends of the magnetic core one (13) extend out of the cavity one. The mutual inductance unit two (2) comprises a shell two (21), a bottom cover two (22) and a magnetic core two (23), the bottom cover two (22) is butted on the concave side of the shell two (21), the magnetic core two (23) is arranged in the cavity two formed by the shell two (21) and the bottom cover two (22) and is filled and closed by an epoxy resin layer (3), and the cavity two forms a socket (24) at the two ends of the magnetic core two (23) to accommodate the end-to-end butt joint of the magnetic core one (13). The outer periphery of the mutual inductance unit one (1) and the mutual inductance unit two (2) is hinged, the end faces of the mutual inductance unit one (1) and the mutual inductance unit two (2) are butted to each other to form a closed loop structure, the two end faces of the mutual inductance unit one (1) and the mutual inductance unit two (2) are butted to each other and are sealed by a sealing strip (4), the end faces of the shell one (11) and the bottom cover one (12) are provided with a groove (14) to accommodate the butt joint of the sealing strip (4), the end faces of the shell two (21) and the bottom cover two (22) are provided with the sealing strip (4), the outer periphery of the mutual inductance unit one (1) and the mutual inductance unit two (2) is provided with a locking member (5) to lock the closed loop mutual inductance unit one (1) and the mutual inductance unit two (2), and the end faces of the shell one (11) extend outward to cover the butt joint position of the mutual inductance unit one (1) and the mutual inductance unit two (2).

2. An open-close waterproof current transformer as claimed in claim 1, characterized in that: The shell one (11) is composed of three arc-shaped curved surfaces of an outer arc panel, a front panel and a rear panel which are connected to each other, and the bottom cover one (12) is adhesively fixed to the shell one (11).

3. An open-close waterproof current transformer as claimed in claim 2, characterized in that: The adhesively fixed side of the bottom cover one (12) is provided with a flange to butt joint the notch of the concave side of the shell one (11).

4. An open-close waterproof current transformer as claimed in claim 1, wherein: The shell two (21) is composed of three arc-shaped curved surfaces of an outer arc panel, a front panel and a rear panel which are connected to each other, and the bottom cover two (22) is adhesively fixed to the shell two (21).

5. An open-close waterproof current transformer as claimed in claim 4, characterized in that: The adhesively fixed side of the bottom cover two (22) is provided with a flange to butt joint the concave side of the shell two (21).

6. An open-close waterproof current transformer as claimed in claim 1, wherein: The front panels of the mutual inductance unit one (1) and the mutual inductance unit two (2) are both provided with an inner threaded sleeve (6) and a locking screw (7) which are distributed in the radial direction, and the locking screw (7) is threadedly connected to the inner threaded sleeve (6).

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