A modular combined current transformer

Abstract

This utility model relates to the field of instrument transformer technology and discloses a modular combined instrument transformer, including a main housing, a connecting housing, and a cover plate. This modular combined instrument transformer uses an isolation fixing component to stably install the coil within the main housing, achieving both electrical isolation between the coil and the housing and rigid fixation to prevent vibration displacement, ensuring electromagnetic coupling stability during current or voltage transformation. The detection module has built-in sensors that collect parameters such as coil temperature, equipment vibration, and insulation status in real time. The processing unit analyzes and generates status data, enabling online monitoring and early warning of abnormalities. Heat from the equipment is conducted to the cooling fan area via a heat conduction channel. The fan forces convection to accelerate heat dissipation. The heat conduction channel, detection module, and fan form a closed-loop heat dissipation path through the connecting housing, improving heat dissipation efficiency and preventing high temperatures from causing coil performance degradation or insulation aging. This achieves the effect of detecting the operating status and facilitating timely understanding of the stability of the modular combined instrument transformer.

Description

Technical Field

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

[0002] With people's increasing pursuit of low-carbon, energy-saving, convenient, and intelligent living, electricity, as a vital energy source, faces higher demands for its use and control. The widespread application of smart meters has saved resources and reduced electricity costs. As electronic technology advances rapidly, the user market demands more stringent requirements from smart meters regarding safety, reliability, accuracy, sensitivity, and multifunctionality, as well as high quality and affordability. Current transformers are commonly used measuring components in smart meters, converting large primary currents into smaller secondary currents through a specific transformation ratio; they are used for protection, measurement, and other purposes.

[0003] The current modular combined instrument transformers are difficult to monitor in operation, which makes it difficult to understand their stability in a timely manner. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a modular combined instrument transformer to solve the problem mentioned in the background art that it is difficult to detect the operating status of current modular combined instrument transformers during use, resulting in the inability to understand the stability of the modular combined instrument transformers in a timely manner.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a modular combined current transformer, comprising a main housing, a connecting housing, and a cover plate. An isolation fixing member is fixedly installed on the inner surface of the main housing, and a coil is provided on the outer surface of the isolation fixing member. A multi-dimensional intelligent detection module is fixedly installed on the outer surface of the main housing near the coil. A heat conduction channel is provided on the outer surface of the multi-dimensional intelligent detection module, and a cooling fan is provided on the outer surface of the heat conduction channel. The cooling fan, the heat conduction channel, and the multi-dimensional intelligent detection module are all fixedly installed with the connecting housing.

[0006] Preferably, the outer surface of the connecting shell is provided with a nameplate, the outer surface of the main shell is fixedly connected to a fixing shell away from the outer surface of the connecting shell, the outer surface of the fixing shell is fixedly installed with a base, the outer surface of the base is provided with a through hole, the outer surface of the main shell is fixedly installed with a slot and a plug, and the outer surface of the fixing shell is provided with a wiring terminal.

[0007] Preferably, the slots and inserts are located on both sides of the main housing, and the slots and inserts are correspondingly inserted and connected. The outer surface of the cover plate is provided with mounting bolts, and the cover plate is fixedly connected to the main housing, the connecting housing, and the fixed housing through the mounting bolts. A sealing gasket is provided at the junction of the cover plate and the main housing, the connecting housing, and the fixed housing.

[0008] Preferably, the coil is a Rogowski coil, and the coil assembly is equipped with a resistive voltage divider. The multi-dimensional intelligent detection module includes temperature, humidity, partial discharge, vibration, and edge computing units. The isolation fastener is made of insulating material. The outer surface of the main housing is equipped with a control display, which is electrically connected to the multi-dimensional intelligent detection module and the cooling fan.

[0009] Preferably, the heat conduction channel is honeycomb-shaped, and an epoxy resin insulator is embedded in the outer surface of the heat conduction channel. The cooling fan is a micro axial flow fan, and the outer surface of the cooling fan is coated with a nano-hydrophobic coating.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] 1. This modular combined instrument transformer uses an isolation fixing component to stably install the coil within the main housing, achieving both electrical isolation between the coil and the housing and rigid fixation to prevent vibration displacement, ensuring electromagnetic coupling stability during current or voltage transformation. The built-in sensor in the detection module collects parameters such as coil temperature, equipment vibration, and insulation status in real time. The processing unit analyzes and generates status data, enabling online monitoring of the operating status and early warning of anomalies. The equipment heat is conducted to the cooling fan area through a heat conduction channel, and the fan forces convection to accelerate heat dissipation. The heat conduction channel, detection module, and fan form a closed-loop heat dissipation path through the connecting shell, improving heat dissipation efficiency and preventing high temperature from causing coil performance degradation or insulation aging. This achieves the effect of detecting its operating status and facilitating timely understanding of the stability of the modular combined instrument transformer.

[0012] 2. This modular combined transformer extends the structure by connecting the fixed shell to the main shell. The base provides stable support, and the through holes facilitate fixed installation. In addition, the slots and plugs of the main shell achieve precise docking and positioning of modules or components through mechanical cooperation, simplifying the equipment assembly process, ensuring accurate alignment of components, reducing assembly errors, and improving the overall structure, thereby achieving the effect of easy assembly and fixing. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural schematic diagram of the present utility model;

[0014] Figure 2 This is a front sectional view of the structure of this utility model;

[0015] Figure 3 This is a side sectional view of the structure of this utility model.

[0016] In the diagram: 1. Main outer shell; 2. Isolation fastener; 3. Coil; 4. Multi-dimensional intelligent detection module; 5. Heat conduction channel; 6. Cooling fan; 7. Connecting shell; 8. Fixing shell; 9. Nameplate; 10. Wiring terminal; 11. Base; 12. Through hole; 13. Slot; 14. Insert block; 15. Cover plate. Detailed Implementation

[0017] 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.

[0018] Example 1:

[0019] Please refer to the following: Figure 1-3 ,

[0020] A modular combined current transformer includes a main housing 1, a connecting housing 7, and a cover plate 15. An isolation fastener 2 is fixedly installed on the inner surface of the main housing 1, and a coil 3 is provided on the outer surface of the isolation fastener 2. A multi-dimensional intelligent detection module 4 is fixedly installed on the outer surface of the main housing 1 near the coil 3. A heat conduction channel 5 is provided on the outer surface of the multi-dimensional intelligent detection module 4, and a cooling fan 6 is provided on the outer surface of the heat conduction channel 5. The cooling fan 6, the heat conduction channel 5, and the multi-dimensional intelligent detection module 4 are all fixedly installed with the connecting housing 7.

[0021] Specifically, this modular combined transformer uses an isolation fixing component 2 to stably install the coil 3 within the main housing 1, achieving both electrical isolation between the coil 3 and the housing, and rigid fixation to prevent vibration displacement, ensuring electromagnetic coupling stability during current or voltage transformation. The detection module's built-in sensors collect parameters such as coil 3 temperature, equipment vibration, and insulation status in real time. The processing unit analyzes this data to generate status data, enabling online monitoring and anomaly warnings, allowing for early detection of potential faults and reducing maintenance costs. Heat is conducted to the cooling fan area via the heat conduction channel 5. The fan forces convection to accelerate heat dissipation. The heat conduction channel 5, the detection module, and the fan form a closed-loop heat dissipation path through the connecting shell 7, improving heat dissipation efficiency, preventing high temperatures from causing coil 3 performance degradation or insulation aging, and extending lifespan. The main housing 1 provides insulation protection and electromagnetic shielding, while the connecting shell 7 rigidly integrates all components, reducing size, improving space utilization, enhancing vibration and interference resistance, and adapting to compact installation requirements such as switchgear.

[0022] In this embodiment: the coil 3 is a Rogowski coil 3, and the coil 3 is combined with a resistor voltage divider. The multi-dimensional intelligent detection module 4 includes temperature, humidity, partial discharge, vibration and edge computing units. The isolation fixing member 2 is made of insulating material. The outer surface of the main housing 1 is provided with a control display. The control display is electrically connected to the multi-dimensional intelligent detection module 4 and the cooling fan 6.

[0023] Specifically, the coreless design of the Rogowski coil 3 avoids hysteresis and saturation. Combined with a high-precision resistive voltage divider, it achieves linear conversion between current (0.1A to 3200A) and voltage signals over a wide range, improving measurement accuracy and eliminating the saturation error of traditional core coils. This enhances the linearity of electrical measurements and improves electromagnetic interference resistance, adapting to the precise measurement needs of complex power scenarios. The multi-dimensional intelligent detection module 4 integrates temperature, humidity, partial discharge, and vibration sensors to collect status parameters in real time. The edge computing unit analyzes the data locally and generates diagnostic results, enabling online monitoring of multiple physical quantities and early fault warnings such as insulation aging and mechanical loosening. The warning accuracy is >90%, reducing manual inspection costs. The isolation fixing component 2 uses insulating materials to rigidly fix the coil 3. To prevent vibration and displacement, and to block the electrical path between coil 3 and the outer casing, the electromagnetic coupling stability of coil 3 is ensured while enhancing the safety of high and low voltage isolation, meeting the requirements of insulation level III environment. The control display receives and visualizes the data from the detection module, and simultaneously controls the start and stop of the cooling fan 6 based on temperature data, realizing intuitive monitoring of equipment status and intelligent heat dissipation adjustment, improving operational convenience, avoiding performance degradation caused by high temperature, and extending equipment life. The controller is an existing structure, and the control circuit can be implemented by those skilled in the art through simple programming. It is common knowledge in the field, and is only used without modification. Therefore, the control method and circuit connection will not be described in detail, facilitating centralized control operation of the relevant structure.

[0024] In the embodiment: the heat conduction channel 5 is honeycomb-shaped, and an epoxy resin insulator is embedded in the outer surface of the heat conduction channel 5. The cooling fan 6 is a micro axial flow fan, and the outer surface of the cooling fan 6 is coated with a nano hydrophobic coating.

[0025] Specifically, the honeycomb structure increases the heat exchange surface area and shortens the heat conduction path, quickly dissipating the heat generated by coil 3 and core components, improving thermal conductivity by more than 30%, avoiding local heat accumulation, and providing a high-efficiency heat conduction foundation for the cooling fan 6. The epoxy resin insulator wraps the heat conduction channel 5, which not only blocks the electrical path through excellent insulation, but also fixes the channel structure with curing properties, strengthening the safety of high and low voltage isolation, while ensuring the stability of the heat conduction path. The fan forms a directional airflow through axial airflow, accelerating the heat exchange between the heat conducted by the heat conduction channel 5 and the outside air. It is suitable for compact spaces with a power consumption of <5W, further improving heat dissipation efficiency and ensuring the temperature stability of the equipment under high load. The coating repels water vapor and dust through hydrophobic properties, reducing condensation and dirt accumulation on the fan surface, reducing the probability of fan failure due to moisture or blockage, and extending the service life of the heat dissipation system to more than 2000 hours.

[0026] Working principle: The coil 3 is stably installed inside the main housing 1 by the isolation fixing component 2. The isolation fixing component 2 not only achieves electrical isolation between the coil 3 and the housing, but also prevents the coil 3 from vibrating and shifting through rigid fixation, ensuring the stability of electromagnetic coupling during current or voltage changes. The detection module collects multi-dimensional parameters such as coil 3 temperature, equipment vibration, and insulation status in real time through built-in sensors. After analysis by the internal processing unit, status data is generated, realizing online monitoring and abnormal early warning of equipment operation status, early detection of potential faults, and reduction of operation and maintenance costs. The heat generated by the equipment operation is quickly conducted to the area of ​​the cooling fan 6 through the heat conduction channel 5. The fan forces convection to accelerate heat dissipation, and the heat conduction channel 5 is fixed to the detection module and the cooling fan 6 through the connecting shell 7. A closed-loop heat dissipation path is formed, which improves heat dissipation efficiency, avoids the performance degradation or insulation aging of coil 3 caused by high temperature, extends the service life of the equipment, and adapts to high-load operation scenarios. The main shell 1 provides insulation protection and electromagnetic shielding. The connecting shell 7 rigidly integrates the cooling fan 6, heat conduction channel 5, detection module and main shell 1 to form a compact modular structure, which reduces the size of the equipment, improves space utilization, and enhances the overall vibration resistance and anti-interference ability. It is suitable for the installation requirements of compact scenarios such as switch cabinets. Compared with related technologies, the modular combined current transformer provided by this utility model has the following beneficial effects: it achieves the effect of detecting its operating status and facilitating timely understanding of the stability of the modular combined current transformer.

[0027] Example 2:

[0028] Please refer to the following: Figure 1-3 ,

[0029] The outer surface of the connecting shell 7 is provided with a nameplate 9. The outer surface of the main shell 1 is fixedly connected to the outer surface of the connecting shell 7. The outer surface of the fixed shell 8 is fixedly installed with a base 11. The outer surface of the base 11 is provided with a through hole 12. The outer surface of the main shell 1 is fixedly installed with a slot 13 and a plug 14. The outer surface of the fixed shell 8 is provided with a wiring terminal 10.

[0030] Specifically, the main outer shell 1 is connected to the fixed shell 8 to form a structural extension, the base 11 provides stable support, the through hole 12 facilitates fixed installation, and the slot 13 and plug 14 of the main outer shell 1 achieve precise docking and positioning of modules or components through mechanical cooperation, simplifying the equipment assembly process, ensuring accurate alignment of component connections, reducing assembly errors, and improving the overall structure, thereby achieving the effect of facilitating assembly and fixing.

[0031] In the embodiment: slot 13 and plug 14 are disposed on both sides of the main housing 1, and slot 13 and plug 14 are correspondingly inserted and connected. The outer surface of cover plate 15 is provided with mounting bolts. Cover plate 15 is fixedly connected to main housing 1, connecting housing 7 and fixing housing 8 by mounting bolts. A sealing gasket is provided at the junction of cover plate 15 and main housing 1, connecting housing 7 and fixing housing 8.

[0032] Specifically, the slots 13 and plugs 14 on both sides of the main housing 1 are mechanically engaged through corresponding insertion to form a precisely aligned connection structure, simplifying the assembly process of modules or components, ensuring no misalignment in the connection, improving the overall integrity and vibration resistance of the equipment structure, and reducing assembly errors. The cover plate 15 is rigidly connected to the main housing 1, connecting housing 7, and fixed housing 8 through mounting bolts to form a closed protective structure, enhancing the overall structural strength of the equipment, facilitating later disassembly and maintenance, and providing physical protection for internal components, isolating them from external mechanical impacts. The sealing gaskets at the junctions of the cover plate 15 and each housing fill the gaps through elastic deformation, blocking the intrusion path of moisture, dust, and other impurities, improving the protection level of the equipment, avoiding aging or short circuits of internal components caused by impurities, and extending the service life of the equipment.

[0033] Working principle: A nameplate 9 is provided on the outer surface of the connecting shell 7. The nameplate 9 clearly marks the equipment model, parameters, and specifications, providing an intuitive display of the equipment's identity and technical parameters. This facilitates quick identification of equipment information by maintenance personnel, improves the efficiency of parameter verification during installation and maintenance, and reduces operational errors. A fixed shell 8 is fixedly connected to the outer surface of the main shell 1 away from the connecting shell 7. A base 11 is fixedly installed on the outer surface of the fixed shell 8. A through hole 12 is opened on the outer surface of the base 11. A slot 13 and a plug 14 are fixedly installed on the outer surface of the main shell 1. The fixed shell 8 connects to the main shell 1 to form a structural extension. The base 11 provides stable support, and the through hole 12 facilitates access. The fixed installation, along with the slots 13 and plugs 14 of the main housing 1, achieves precise docking and positioning of modules or components through mechanical cooperation, simplifying the equipment assembly process, ensuring accurate alignment of component connections, reducing assembly errors, and improving the overall structural integrity. The outer surface of the fixed housing 8 is provided with wiring terminals 10. The wiring terminals 10 outside the fixed housing 8 achieve reliable conduction and signal transmission of internal and external circuits through standardized interfaces, reducing the complexity of on-site wiring, reducing the probability of incorrect wiring, and ensuring the electrical connection stability and safety of metering and protection circuits. Compared with related technologies, the modular combined current transformer provided by this utility model has the following beneficial effects: thus achieving the effect of easy assembly and fixing.

[0034] 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 modular combination transformer comprising a main housing (1), a connection housing (7) and a cover plate (15), characterized in that: An isolation fastener (2) is fixedly installed on the inner surface of the main housing (1). A coil (3) is provided on the outer surface of the isolation fastener (2). A multi-dimensional intelligent detection module (4) is fixedly installed on the outer surface of the main housing (1) near the outer surface of the coil (3). A heat conduction channel (5) is provided on the outer surface of the multi-dimensional intelligent detection module (4). A cooling fan (6) is provided on the outer surface of the heat conduction channel (5). The cooling fan (6), the heat conduction channel (5), and the multi-dimensional intelligent detection module (4) are all fixedly installed with the connecting shell (7).

2. A modular combination transformer according to claim 1, characterized in that: The outer surface of the connecting shell (7) is provided with a nameplate (9). The outer surface of the main shell (1) away from the connecting shell (7) is fixedly connected to a fixing shell (8). The outer surface of the fixing shell (8) is fixedly installed with a base (11). The outer surface of the base (11) is provided with a through hole (12). The outer surface of the main shell (1) is fixedly installed with a slot (13) and a plug (14). The outer surface of the fixing shell (8) is provided with a wiring terminal (10).

3. A modular combination transformer according to claim 2, characterised in that: The slot (13) and the plug (14) are located on both sides of the main housing (1), and the slot (13) and the plug (14) are connected to each other. The outer surface of the cover plate (15) is provided with mounting bolts. The cover plate (15) is fixedly connected to the main housing (1), the connecting shell (7) and the fixed shell (8) by the mounting bolts. A sealing gasket is provided at the junction of the cover plate (15) and the main housing (1), the connecting shell (7) and the fixed shell (8).

4. A modular combined current transformer according to claim 1, characterized in that: The coil (3) is a Rogowski coil (3), and the coil (3) is equipped with a resistor voltage divider. The multi-dimensional intelligent detection module (4) includes temperature, humidity, partial discharge, vibration and edge computing units. The isolation fastener (2) is made of insulating material. The outer surface of the main housing (1) is equipped with a control display. The control display is electrically connected to the multi-dimensional intelligent detection module (4) and the cooling fan (6).

5. A modular combined current transformer according to claim 1, characterized in that: The heat conduction channel (5) is honeycomb-shaped, and an epoxy resin insulator is embedded in the outer surface of the heat conduction channel (5). The cooling fan (6) is a micro axial flow fan, and the outer surface of the cooling fan (6) is coated with a nano hydrophobic coating.

Images