Split type current transformer

Abstract

The utility model relates to a current transformer technical field especially relates to a split type current transformer, solved the prior art in the bottom not set any for supporting or supporting structure, resulting in mutual inductor when placing is easy to because of the unstable barycenter and the problem of shaking even dumping. A split type current transformer, including bottom cover, top cover and current transformer, the bottom of current transformer sets up in the bottom cover inside, top cover detachable connection is in the bottom cover top, the bottom cover bottom is connected with the base, and the base both sides are connected with the side support rod through horizontal adjusting structure. Through setting up base and side support rod, the stability and anti -interference ability of equipment placement are promoted, effectively prevent the dumping risk caused because of vibration or cable pulling, improve the security and measurement accuracy in the use process, and the rational structure is convenient to operate, satisfies the on -the -spot diversification installation demand.

Description

Technical Field

[0001] This utility model relates to the field of current transformer technology, and in particular to a split-type current transformer. Background Technology

[0002] Split-type current transformers are widely used measurement and protection devices in power systems. They are primarily used to proportionally convert high currents to low currents to facilitate instrument measurement and relay protection. Compared to traditional integrated current transformers, the split-type structure offers advantages such as convenient installation, flexible disassembly, and portability, making it particularly suitable for applications with frequent field operations, limited space, or requiring rapid replacement. With the development of smart grids and distribution automation, higher requirements are being placed on the stability, safety, and ease of operation of split-type current transformers.

[0003] A portable, split-type current transformer, disclosed in CN210925649U, uses a hinge to allow for the separate rotation of the upper and lower housings. The iron core is divided into upper and lower parts, each bonded to the housing. In the closed state, these parts form a complete magnetic circuit, thus achieving a split structure and portability. However, this structure lacks any support or underpinning structure at the bottom, making the transformer prone to swaying or even tipping over when placed on the ground or other supported surfaces due to instability. This is especially problematic during measurement when subjected to slight external vibrations or cable tension, easily causing measurement errors or equipment damage, severely impacting safety and reliability.

[0004] Therefore, to address the shortcomings of existing technologies, we urgently need a split-type current transformer to solve this problem. This transformer should have a stable support structure at its bottom to improve the stability and anti-interference capability of the equipment, significantly enhancing its safety and measurement accuracy under various complex operating conditions. It should also be structurally sound, easy to operate, and portable, better meeting the needs of modern power systems for intelligent, efficient, and safe equipment, and providing strong support for the sustainable development of the power industry. Utility Model Content

[0005] The purpose of this utility model is to provide a split-type current transformer, which solves the problem that in the prior art, no support or support structure is set at the bottom, which makes the transformer easy to shake or even tip over when placed on the ground or other supporting surfaces due to instability of the center of gravity. Especially during the measurement process, when subjected to slight external vibration or cable pulling, it is easy to cause measurement errors or equipment damage, which seriously affects the safety and reliability of use.

[0006] To achieve the above objectives, this utility model provides a split-type current transformer, comprising a bottom cover, a top cover, and a current transformer. The bottom of the current transformer is disposed inside the bottom cover, and the top cover is detachably connected to the top of the bottom cover.

[0007] The bottom of the bottom cover is connected to a base, and both sides of the base are connected to side support rods through a horizontal adjustment structure.

[0008] The base has a gradually decreasing size, with the bottom size being larger than the top size, and the top size being the same as the bottom cover size.

[0009] The side support rod is horizontally arranged and made of metal. A positioning ring is fixedly connected to the top edge of the bottom cover. A through hole is opened at the top four corners of the positioning ring. A positioning screw that matches the through hole is fixedly connected to the bottom four corners of the top cover. A positioning nut is connected to the end of the positioning screw.

[0010] The base has anti-slip pads fixedly connected to both sides of its bottom, and a wire storage box is connected to one side of the base.

[0011] The base has two pull slots on both sides and a connecting screw hole at the center of both sides. The horizontal adjustment structure includes two pull rods fixedly connected to the side wall of the side support rod and an adjusting screw that rotates through the side support rod at one end. The pull rods slide with the pull slots and the adjusting screw is threaded with the connecting screw hole.

[0012] The bottom cover has a side groove for the wire to pass through, and the top of the wire placement box is connected to a top cover.

[0013] This utility model discloses a split-type current transformer. By adding a base, side support rods, and a horizontal adjustment structure to the original split-type structure, it effectively solves the problem of unstable placement caused by the lack of a bottom support structure in the prior art, significantly improving the equipment's anti-tipping ability and operational safety in different environments. Due to the adjustable support structure, this split-type current transformer can be applied to various complex terrains and installation conditions, improving its practicality and adaptability. At the same time, the detachable connection between the top cover and the bottom cover retains the advantages of the traditional split-type structure, such as easy portability and quick installation, taking into account both on-site operation efficiency and equipment maintenance convenience. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0015] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0016] Figure 2 This is a schematic diagram of the top cover and bottom cover of an embodiment of the present invention.

[0017] Figure 3 This is a schematic diagram of the wire placement box and top cover according to an embodiment of the present utility model.

[0018] Figure 4 This is a schematic diagram of the pull-out groove and connecting screw hole of an embodiment of the present invention.

[0019] Figure 5 This is a schematic diagram of the pull rod and adjusting screw according to an embodiment of the present invention.

[0020] In the diagram: 1. Top cover; 2. Bottom cover; 3. Base; 4. Positioning nut; 5. Positioning screw; 6. Positioning ring; 7. Current transformer; 8. Side support rod; 9. Wire storage box; 10. Top cover; 11. Side groove; 12. Pull-out groove; 13. Connecting screw hole; 14. Pull-out rod; 15. Adjusting screw; 16. Handle. Detailed Implementation

[0021] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention. Example

[0022] Please see Figure 1-5 As shown, a split-type current transformer of this embodiment includes a bottom cover 2, a top cover 1, and a current transformer 7. The bottom of the current transformer 7 is disposed inside the bottom cover 2, and the top cover 1 is detachably connected to the top of the bottom cover 2.

[0023] The bottom of the bottom cover 2 is connected to the base 3, and both sides of the base 3 are connected to the side support rods 8 through a horizontal adjustment structure.

[0024] First, the bottom cover 2 is stably placed on the ground or mounting platform via the base 3 connected to its bottom. The operator then adjusts the side support rods 8 according to the ground conditions using the leveling structures on both sides of the base 3 to accommodate uneven or tilted mounting surfaces, thus ensuring good stability of the entire device during use. After adjusting the support structure and confirming that the bottom cover 2 is stable, the internal current transformer 7 can form a complete magnetic circuit and enter normal operating condition. In this state, the current in the high-voltage line is sensed by the current transformer 7 and proportionally converted into a low-voltage signal output for use by measuring instruments or protection systems. After the measurement task is completed, the top cover 1 can be connected to the bottom cover 2 to protect the current transformer 7 during transportation and movement. Example

[0025] Please see Figure 1-5 As shown in this embodiment, a split-type current transformer has a base 3 with a tapered size. The bottom dimension is larger than the top dimension, and the top dimension is the same as the bottom cover 2. Specifically, the tapered design of the base 3, with the bottom dimension larger than the top dimension and the top dimension being the same as the bottom cover 2, allows the base to provide a larger support area, increasing the stability of the equipment during placement, while ensuring the consistency and compactness of the overall structure. This design not only enhances the adaptability of the equipment to different terrains but also improves its anti-overturning performance, ensuring the stability of the current transformer during use.

[0026] Anti-slip pads are fixedly connected to both sides of the bottom of the base 3, and a cable placement box 9 is connected to one side of the base 3. Specifically, by fixing the anti-slip pads to both sides of the bottom of the base 3 and connecting the cable placement box 9 to one side, the problem of slipping when the equipment is used on a smooth or sloping surface is effectively prevented. At the same time, it provides an additional cable management function, which makes it easy to organize and protect the cables, avoids the safety hazards caused by messy cables, and further improves the safety and cleanliness of the equipment.

[0027] A side groove 11 for cable passage is provided on one side of the bottom cover 2, and a top cover 10 is connected to the top of the cable placement box 9. Specifically, the side groove 11 on one side of the bottom cover 2 and the top cover 10 connected to the top of the cable placement box 9 facilitate the introduction and management of cables, protecting them from external damage and reducing the space required for wiring, making the entire device look neater and more organized. In addition, the design of the top cover 10 also provides additional protection for the cables, preventing dust, moisture, and other factors from affecting them, extending the service life of the equipment, and improving the convenience and safety of operation. Example

[0028] Please see Figure 1-5As shown, this embodiment of a split-type current transformer features a horizontally positioned side support rod 8 made of metal. A positioning ring 6 is fixedly connected to the top edge of the bottom cover 2, with through holes at each of the four corners of the top of the positioning ring 6. Positioning screws 5, matching the through holes, are fixedly connected to the four corners of the bottom of the top cover 1, with positioning nuts 4 connected to the ends of the screws 5. Specifically, the horizontal positioning of the side support rod 8, made of metal, combined with the design of the positioning ring 6, positioning screws 5, and positioning nuts 4, achieves precise positioning and a secure connection between the top cover 1 and the bottom cover 2. This structural design not only enhances the overall strength and durability of the equipment but also simplifies the installation and disassembly process, greatly facilitating on-site operation while ensuring the safety and reliability of the current transformer during operation.

[0029] Two pull-out slots 12 are provided on both sides of the base 3, and connecting screw holes 13 are provided at the center of both sides of the base 3. The horizontal adjustment structure includes two pull-out rods 14 fixedly connected to the side wall of the side support rod 8 and an adjusting screw 15 that rotates through the side support rod 8 at one end. The pull-out rods 14 are slidably engaged with the pull-out slots 12, and the adjusting screw 15 is threadedly engaged with the connecting screw holes 13. A handle 16 is connected to one end of the adjusting screw 15. Specifically, through the pull-out slots 12 and connecting screw holes 13 on both sides of the base 3, as well as the pull-out rods 14 and adjusting screw 15 included in the horizontal adjustment structure, the position of the side support rod 8 can be flexibly adjusted according to actual needs to adapt to different ground conditions. This adjustable design greatly enhances the environmental adaptability and stability of the equipment, ensuring that it can maintain good working condition even in complex environments.

[0030] This solution includes the following workflow:

[0031] First, the bottom cover 2 is stably placed on the ground or mounting platform via the base 3 connected to its bottom. Because the base 3 adopts a tapered design (the bottom dimension is larger than the top dimension, and the top dimension matches the overall dimensions of the bottom cover 2), the base 3 provides a larger support area while maintaining overall structural harmony, effectively improving the stability and anti-tipping ability of the equipment during placement. The operator then adjusts the side support rod 8 according to the ground conditions using the horizontal adjustment structure on both sides of the base 3. This horizontal adjustment structure consists of a pull rod 14, an adjusting screw 15, a pull slot 12, and a connecting screw hole 13. Specifically, the pull rod 14 is fixedly connected to the side wall of the side support rod 8 and slides in the pull slot 12 on both sides of the base 3. One end of the adjusting screw 15 rotates through the side support rod 8 and forms a threaded engagement with the connecting screw hole 13 on the base 3. By tightening or loosening the adjusting screw 15, the position and height of the side support rod 8 can be flexibly adjusted, allowing the entire device to adapt to uneven or tilted mounting surfaces and ensuring good stability during use.

[0032] After confirming that the bottom cover 2 is in a stable state, the operator aligns the top cover 1 with the bottom cover 2. During this process, the positioning screws 5 fixed at the four corners of the bottom of the top cover 1 pass through the through holes on the positioning ring 6 at the top edge of the bottom cover 2 and are locked in place by the positioning nuts 4. This achieves precise positioning and a secure connection between the top cover 1 and the bottom cover 2, which not only improves the overall strength and durability of the equipment but also simplifies the installation and disassembly process, ensuring the safety and reliability of the current transformer during operation. At this point, the internal current transformer 7 is completely embedded in the bottom cover 2 and protected by the top cover 1. When the top cover 1 and the bottom cover 2 are closed, the current transformer 7 forms a complete magnetic circuit and enters normal operating condition. It is used to sense the current in the high-voltage line and convert it proportionally into a low-voltage signal output for use by measuring instruments or protection systems.

[0033] In addition, to further enhance the safety and practicality of the equipment, anti-slip pads are fixedly connected to both sides of the bottom of the base 3 to prevent the equipment from sliding when used on smooth or sloping surfaces. A cable storage box 9 is also provided on one side of the base 3 to centrally store cables and other auxiliary wires, avoiding safety hazards caused by messy wires and improving site cleanliness. Meanwhile, a side groove 11 for wires to pass through is provided on one side of the bottom cover 2, facilitating the introduction of wires into the wiring position inside the current transformer 7. The top of the cable storage box 9 is equipped with a top cover 10, which can be opened and closed to seal the cable storage area, providing multiple protective functions such as dustproofing, waterproofing, and preventing accidental contact, extending the service life of the wires and improving operational safety.

[0034] This technical solution achieves several significant technical effects through the coordinated operation of the aforementioned components: the tapered structure design of the base 3 enhances the stability and anti-tipping ability of the equipment; the horizontal adjustment structure composed of the side support rod 8, pull rod 14, adjusting screw 15, pull groove 12, and connecting screw hole 13 enhances the adaptability to different terrain environments and improves the stability of equipment operation; the cooperation of the positioning ring 6, positioning screw 5, and positioning nut 4 enables a quick and stable connection between the top cover 1 and the bottom cover 2, ensuring the strength and safety of the overall equipment structure; the anti-slip pad design enhances the anti-slip performance of the equipment under various ground conditions; and the cable placement box 9, side groove 11, and top cover 10 enable effective management and protection of cables, reducing the impact of the external environment on cables and improving the practicality and ease of maintenance of the equipment.

[0035] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A split-type current transformer, characterized in that, include: A bottom cover, a top cover, and a current transformer, wherein the bottom of the current transformer is disposed inside the bottom cover, and the top cover is detachably connected to the top of the bottom cover; The bottom of the bottom cover is connected to a base, and both sides of the base are connected to side support rods through a horizontal adjustment structure.

2. A split-type current transformer according to claim 1, characterized in that, The base is tapered in size, with the bottom dimension being larger than the top dimension, and the top dimension being the same as the bottom cover dimension.

3. A split-type current transformer according to claim 1, characterized in that, The side support rod is horizontally arranged and is made of metal. A positioning ring is fixedly connected to the top edge of the bottom cover. A through hole is opened at the top four corners of the positioning ring. A positioning screw that matches the through hole is fixedly connected to the bottom four corners of the top cover. A positioning nut is connected to the end of the positioning screw.

4. A split-type current transformer according to claim 2, characterized in that, Anti-slip pads are fixedly connected to both sides of the bottom of the base, and a wire storage box is connected to one side of the base.

5. A split-type current transformer according to claim 3, characterized in that, Two pull-out slots are provided on both sides of the base, and a connecting screw hole is provided at the center of both sides of the base. The horizontal adjustment structure includes two pull-out rods fixedly connected to the side wall of the side support rod and an adjusting screw that rotates through the side support rod at one end. The pull-out rods are slidably engaged with the pull-out slots, and the adjusting screw is threadedly engaged with the connecting screw hole.

6. A split-type current transformer according to claim 4, characterized in that, The bottom cover has a side groove for the wire to pass through, and the top of the wire placement box is connected to a top cover.

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