Notch iron core structure of three-phase mutual inductor

Abstract

The utility model discloses a three-phase mutual inductor notch iron core structure which comprises a content iron core and an insulation shell, the content iron core is arranged in the insulation shell, winding rollers are arranged between the two ends of the content iron core, embedding grooves are formed in the two ends of the content iron core, the embedding grooves are connected with embedding blocks in a clamped mode, and the embedding blocks are connected with the insulation shell in a clamped mode. Receding grooves are formed in the inner sides of the two ends of the inner content iron core, and clamping grooves are formed in the positions, corresponding to the receding grooves, of the middle of the embedded block. According to the utility model, the notches are formed in the two ends of the inner iron core, and the winding grooves are formed in the winding roller, so that the misplacement phenomenon possibly occurring in the winding process is effectively avoided. In the traditional technology, winding dislocation is often caused by inaccurate positioning during winding, so that the winding quality is influenced, and faults in subsequent use are possibly caused. By means of the meticulously-designed winding groove and notch structures, the winding accuracy and stability are guaranteed, and the overall performance of the winding roller is remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of cut-out iron core technology, specifically a cut-out iron core structure for a three-phase sensor. Background Technology

[0002] Instrument transformers, also known as instrument transformers, are a general term for current transformers and voltage transformers. They convert high voltage to low voltage and large current to small current, and are used in measurement or protection systems. Their main function is to proportionally transform high voltage or large current into standard low voltage or standard small current, so as to realize the standardization and miniaturization of measuring instruments, protection equipment, and automatic control equipment. At the same time, instrument transformers can also be used to isolate high voltage systems to ensure the safety of personnel and equipment. The cores of commonly used instrument transformers are generally made of silicon steel sheets. Silicon steel is a magnetic material with strong magnetic permeability. In a current-carrying coil, it can generate a large magnetic induction intensity, which can reduce the size of the instrument transformer. The induced current generated in the core circulates in a plane perpendicular to the direction of magnetic flux. This induced current is called eddy current. The cut-out core is made of an iron core with an opening to facilitate the installation of the winding assembly.

[0003] As disclosed in application number 201621196802.5, a cutable zero-sequence busbar current transformer includes a transformer body and an insulating shell disposed outside the transformer body; the transformer body includes an iron core and a secondary coil; the insulating shell is provided with secondary terminals, secondary connection terminals, and a busbar inner hole; all secondary terminals and secondary connection terminals are provided with threaded screws, washers, and spring washers; the insulating shell is a cuboid composed of two semi-circular solids, and the busbar inner hole is located at the center of the insulating shell, and its shape is elliptical; in the two semi-circular... The cut-out core has gaps at its joints, within which symmetrical core bosses are located. Secondary terminals are located on one side of the gap, and secondary connection terminals are located on the other side, with connecting tabs on the secondary connection terminals. However, in practical use, it still suffers from poor functionality. The cut-out core typically contains openings, and the eddy current intensity formed inside the open core is lower than that of a normal toroidal core. This results in poor measurement capability and performance of the current transformer equipped with the cut-out core. Furthermore, disassembly and assembly require screwing the secondary connection terminals into the secondary terminals via the connecting tabs, which is labor-intensive. Utility Model Content

[0004] The purpose of this invention is to provide a three-phase sensor cutout core structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a three-phase sensor cutout core structure, comprising a core and an insulating shell, wherein the core is disposed inside the insulating shell, a winding roller is disposed between both ends of the core, and winding grooves are equidistantly disposed on the winding roller, a connecting base is disposed at the upper and lower ends of the winding roller, and an insert block is fixed in the middle of the connecting base, an embedding groove is disposed at both ends of the core, and the embedding groove is engaged with the insert block, a protective pad is disposed at one end of the inner wall of the embedding groove corresponding to the insert block, and two wound winding rollers are respectively placed between the two ends of a set of cores, and then the insert block is inserted into the embedding groove, thereby connecting the two cutouts of the two cores together.

[0006] Preferably, a mounting base is provided between the outer surfaces of the insulating housing, and a spring is provided inside the mounting base.

[0007] Preferably, both ends of the spring are connected to a pulling block, and an adjusting block is fixed in the middle of the front end of the pulling block. The two adjusting blocks can be pulled in the middle to compress the spring, drive the two pulling blocks to move, and thus drive the locking pin to move.

[0008] Preferably, the upper and lower ends of the mounting base are provided with a sliding groove, and the sliding groove is slidably connected to the traction block. The mounting base limits the traction block through the sliding groove, which is conducive to the stable movement of the locking column.

[0009] Preferably, the upper and lower ends of the front part of the mounting base are provided with sliding grooves, and the sliding grooves are slidably connected to the adjusting block. The mounting base limits the adjusting block through the sliding grooves to prevent the adjusting block from tilting.

[0010] Preferably, the inner sides of both ends of the core are provided with relief grooves, and the middle of the embedded block is provided with a locking groove corresponding to the relief groove. After the locking post is aligned with the relief groove, the adjusting block is released and the spring returns to its original position.

[0011] Preferably, the upper and lower ends of one side of the traction block are fixed with locking posts, and the locking posts are respectively engaged with the relief groove and the locking slot. Under the action of the traction block, the locking posts are driven to move, so that the traction block is inserted into the relief groove and the locking slot in sequence, thereby realizing the assembly of the inner core of the winding roller.

[0012] Compared with the prior art, this utility model has significant beneficial effects, specifically reflected in the following aspects:

[0013] 1. Improve winding accuracy and stability:

[0014] This invention effectively avoids misalignment during winding by forming slits at both ends of the inner core and setting winding grooves on the winding roller. In traditional technology, winding misalignment often occurs due to inaccurate positioning, which not only affects the winding quality but may also cause malfunctions in subsequent use. This invention, through its carefully designed winding groove and slit structure, ensures the accuracy and stability of winding, significantly improving the overall performance of the winding roller.

[0015] 2. Simplify the assembly process and improve assembly efficiency:

[0016] This invention cleverly designs an embedded block and a groove structure, allowing two wound winding rollers to be placed between the two ends of a set of internal cores. The cut edges of the two internal cores are securely connected by inserting the embedded block and protective pad. This design not only simplifies the assembly process but also significantly improves assembly efficiency. Traditional technologies often require complex operations and numerous auxiliary tools to assemble winding rollers, while this invention, through optimized structural design, achieves fast and convenient assembly, reducing labor and time costs.

[0017] 3. Enhances structural stability and extends service life:

[0018] By connecting the two winding rollers and the two slits of the two inner cores together, this invention significantly enhances the stability of the overall structure. This design not only improves the deformation resistance of the winding rollers but also extends their service life. In traditional technology, due to unreasonable structural design, winding rollers are prone to deformation or damage during use, while this invention effectively solves this problem by optimizing the connection method.

[0019] 4. Convenient disassembly and assembly design enhances maintenance ease:

[0020] This invention features an adjustable locking post and clearance groove structure. By pulling the adjusting block to compress the spring, the traction block and locking post are moved, enabling the assembly of the winding roller's inner core. This design greatly simplifies the assembly and disassembly process, significantly improving maintenance convenience. Traditionally, the assembly and disassembly of winding rollers often requires specialized tools and technicians, but this invention, through its innovative design, allows ordinary operators to easily complete the assembly and disassembly work, reducing maintenance costs.

[0021] 5. Improve safety and reduce failure rate:

[0022] This invention fully considers safety factors in its design. A protective pad protects one end of the embedded block, preventing potential damage during assembly. Furthermore, the precise fit between the locking post and the clearance groove ensures the robustness and stability of the assembly, reducing the failure rate caused by structural loosening. In traditional technologies, due to unreasonable design, the winding roller is prone to loosening or detachment during use. This invention, through optimized design, effectively improves safety during use.

[0023] In summary, this utility model, through a series of innovative designs, not only improves winding accuracy and stability, simplifies the assembly process, and enhances structural stability, but also improves the convenience of disassembly and assembly and the safety of use, demonstrating significant technical advantages and positive effects. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the front cross-sectional structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the main structure of this utility model;

[0026] Figure 3 For the present utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0027] Figure 4 This is a schematic diagram of the winding roller and inner block structure of this utility model;

[0028] In the diagram: 1. Winding roller; 2. Connecting base; 3. Insulating shell; 4. Inner core; 5. Embedded block; 6. Locking post; 7. Pulling block; 8. Spring; 9. Slide groove one; 10. Mounting base; 11. Slide groove two; 12. Adjusting block; 13. Embedded groove; 14. Protective pad; 15. Clearance groove; 16. Locking groove; 17. Winding groove. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0030] Please see Figure 1-4The present invention provides an embodiment of a three-phase sensor cutout core structure, comprising a core 4 and an insulating shell 3. The core 4 is disposed inside the insulating shell 3. A connecting base 2 is provided at both the upper and lower ends of the winding roller 1, and an embedded block 5 is fixed in the middle of the connecting base 2. An embedding groove 13 is provided at both ends of the core 4, and the embedding groove 13 is engaged with the embedded block 5. A protective pad 14 is provided at one end of the inner wall of the embedding groove 13 corresponding to the embedded block 5.

[0031] In use, the two ends of a set of core 4 are cut, and two wound rollers 1 are placed between the two ends of the set of core 4. Then, the insert block 5 is inserted into the embedding groove 13, and the protective pad 14 protects one end of the insert block 5. The two winding rollers 1 connect the two cuts of the two core 4 together.

[0032] A winding roller 1 is provided between both ends of the core 4, and winding grooves 17 are provided at equal intervals on the winding roller 1.

[0033] In use, the winding groove 17 on the winding roller 1 is used for winding to prevent misalignment during winding.

[0034] An installation base 10 is provided on the outside of the insulating housing 3, and a spring 8 is provided inside the installation base 10. Both ends of the spring 8 are connected to a pulling block 7, and an adjustment block 12 is fixed in the middle of the front end of the pulling block 7.

[0035] When in use, the two adjusting blocks 1 can be pulled towards the middle, which will move the two pulling blocks 7, and in turn move the locking pin 6.

[0036] The upper and lower ends of the mounting base 10 are provided with sliding grooves 9, and the sliding grooves 9 are slidably connected to the traction block 7.

[0037] In use, the mounting base 10 limits the movement of the traction block 7 through the slide groove 9, which helps to stabilize the movement of the locking post 6;

[0038] The upper and lower ends of the front of the mounting base 10 are provided with sliding grooves 11, and the sliding grooves 11 are slidably connected to the adjusting block 12.

[0039] In use, the mounting base 10 limits the adjustment block 12 through the slide groove 11 to prevent the block 7 from tilting.

[0040] The inner sides of both ends of the core 4 are provided with relief grooves 15, and the middle of the embedded block 5 is provided with a slot 16 corresponding to the relief groove 15. The upper and lower ends of one side of the traction block 7 are fixed with a locking post 6, and the locking post 6 is engaged with the relief groove 15 and the slot 16 respectively.

[0041] When in use, after aligning the locking post 6 with the relief groove 15, release the adjusting block 10 so that the locking post 6 is inserted into the relief groove 15 and the locking groove 16 in sequence, thereby assembling the inner core 4 of the winding roller 1.

[0042] In use, according to the embodiments of this application: First, slits are formed at both ends of a set of internal iron cores 4. The winding grooves 17 on the winding rollers 1 are used for winding to prevent misalignment during winding. The two wound winding rollers 1 can be placed between the two ends of the set of internal iron cores 4 respectively. Then, the insert block 5 is inserted into the insertion groove 13. The protective pad 14 protects one end of the insert block 5. The two winding rollers 1 connect the two slits of the two internal iron cores 4 together. Then, the two adjusting blocks 10 can be pulled towards the middle to compress the spring 8 and drive the two traction blocks 7 to move. This causes the locking post 6 to move. Furthermore, the mounting base 10 limits the adjusting block 12 through the second slide groove 11 to prevent the traction block 7 from tilting. The mounting base 10 also limits the traction block 7 through the first slide groove 9, which helps to stabilize the movement of the locking post 6. After the locking post 6 is aligned with the relief groove 15, the adjusting block 10 is released, the spring 8 returns to its original position, and the locking post 6 is moved under the action of the traction block 7, so that the traction block 7 is inserted into the relief groove 15 and the locking groove 16 in sequence, thereby realizing the assembly of the inner core 4 of the winding roller 1. In summary, this structure has good performance and is easy to disassemble and assemble.

[0043] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0044] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0045] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0046] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A three-phase sensor cutout core structure, characterized in that: The device includes a core (4) and an insulating shell (3). The core (4) is located inside the insulating shell (3). A winding roller (1) is provided between both ends of the core (4). The winding roller (1) is provided with winding grooves (17) at equal intervals. A connecting base (2) is provided at both the upper and lower ends of the winding roller (1). An insert block (5) is fixed in the middle of the connecting base (2). An embedding groove (13) is provided at both ends of the core (4). The embedding groove (13) is engaged with the insert block (5). A protective pad (14) is provided at one end of the inner wall of the embedding groove (13) corresponding to the insert block (5).

2. The three-phase sensor cutout core structure according to claim 1, characterized in that: A mounting base (10) is provided between the exterior of the insulating housing (3), and a spring (8) is provided inside the mounting base (10).

3. The three-phase sensor cutout core structure according to claim 2, characterized in that: Both ends of the spring (8) are connected to a traction block (7), and an adjustment block (12) is fixed in the middle of the front end of the traction block (7).

4. The three-phase sensor cutout core structure according to claim 3, characterized in that: The upper and lower ends of the mounting base (10) are provided with sliding grooves (9), and the sliding grooves (9) are slidably connected to the traction block (7).

5. The three-phase sensor cutout core structure according to claim 4, characterized in that: The upper and lower ends of the front part of the mounting base (10) are provided with sliding grooves (11), and the sliding grooves (11) are slidably connected to the adjusting block (12).

6. The three-phase sensor cutout core structure according to claim 1, characterized in that: The inner sides of both ends of the core (4) are provided with relief grooves (15), and the middle of the embedded block (5) is provided with a slot (16) corresponding to the relief grooves (15).

7. The three-phase sensor cutout core structure according to claim 3, characterized in that: The upper and lower ends of the traction block (7) are fixed with locking posts (6), and the locking posts (6) are respectively engaged with the relief groove (15) and the locking groove (16).

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