Multi-module splicing type current and voltage combined transformer

Abstract

The utility model relates to the technical field of mutual inductors, in particular to a multi-module splicing type current and voltage combined mutual inductor which comprises a base, current transformer modules, voltage transformer modules and connecting modules. The base is a cuboid insulating shell, and splicing guide rails and positioning clamping grooves are formed in the top of the base; the bottom of the current transformer module and the bottom of the voltage transformer module are provided with sliding sleeves matched with the splicing guide rails respectively, the side walls of the two sides of the current transformer module and the voltage transformer module are provided with plug terminals and magnetic shielding layers, the connecting module is an H-shaped insulating shell, and a signal processing circuit is integrated in the connecting module. The two sides of the side wall of the connecting module are provided with elastic contacts matched with the plug-in terminals, the top of the connecting module is provided with a communication interface, and by means of the structure of a spring mechanism, an electromagnet, a compression spring and a push rod, the problems that a traditional current and voltage transformer generally adopts an integrated design, is fixed in function and is difficult to adapt to diversified measurement requirements are solved.

Description

Technical Field

[0001] This utility model relates to the field of instrument transformer technology, specifically a multi-module connectable current and voltage combined instrument transformer. Background Technology

[0002] Instrument transformers, also known as instrument transformers, are a general term for current transformers and voltage transformers. They can transform high voltage into low voltage and large current into small current for use 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 to achieve 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.

[0003] Traditional current and voltage transformers typically employ an integrated design with fixed functions, making it difficult to adapt to diverse measurement needs.

[0004] Therefore, it is particularly important to design a multi-module connectable current and voltage combined transformer to overcome the above-mentioned technical defects and improve the overall practicality. Utility Model Content

[0005] The purpose of this invention is to provide a multi-module connectable current and voltage combined transformer to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A multi-module, modular, connectable current-voltage combined transformer includes a base, current transformer modules, voltage transformer modules, and connection modules.

[0008] The base is a rectangular insulating shell, and its top is provided with splicing guide rails and positioning slots;

[0009] The bottom of the current transformer module and the voltage transformer module are respectively provided with sliding sleeves that match the splicing guide rail, and the two side walls of the current transformer module and the voltage transformer module are provided with plug-in terminals and magnetic shielding layers.

[0010] The connection module has an H-shaped insulating housing. The connection module integrates a signal processing circuit. The two sides of the connection module are provided with elastic contacts that match the plug-in terminals, and the top of the connection module is provided with a communication interface.

[0011] As a preferred embodiment of this utility model, the splicing guide rail has a T-shaped protrusion structure, and the sliding sleeve is embedded with several balls to facilitate sliding along the length direction of the splicing guide rail.

[0012] As a preferred embodiment of this utility model, the magnetic shielding layer is composed of two layers of permalloy foil and nanocrystalline soft magnetic composite material, and the outer layer is covered with an epoxy resin insulating layer.

[0013] As a preferred embodiment of this utility model, the signal processing circuit includes an AD sampling chip and a wireless transmission unit, and the communication interface supports RS485 and LoRa protocols.

[0014] As a preferred embodiment of this utility model, a Hall sensor is embedded in the side wall of the connecting module, and a permanent magnet is embedded in the magnetic shielding layer. A spring mechanism is provided on one side of the elastic contact. The spring mechanism includes an electromagnet, a compression spring, and a push rod. One end of the push rod is repelled by the electromagnet, and one end of the compression spring is provided with a push plate. The push plate is connected to the elastic contact. One end of the push rod is fixedly connected to the push plate, and the other end of the compression spring is fixedly connected to the side wall of the connecting module.

[0015] As a preferred embodiment of this utility model, the base is provided with cascading interfaces at both ends. The cascading interfaces include a power bus and a communication bus. Several bases are spliced ​​together through the cascading interfaces. Grounding copper busbars are pre-embedded in the splicing guide rail. Tinned copper busbars are provided at both ends of the base and grounding wires are connected by bolts. The grounding copper busbars are connected to the grounding wires.

[0016] As a preferred embodiment of this utility model, the connecting module and the splicing guide rail are slidably connected, and the sliding sleeve, the connecting module and the base are fixed in position by bolts, and the base is provided with a number of mounting holes.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This utility model utilizes a multi-module, modular, and connectable current-voltage transformer. Employing a structure of spring mechanism, electromagnet, compression spring, and push rod, its modular design achieves high flexibility and scalability. Users can freely combine different modules according to actual needs to adapt to diverse measurement requirements or system configurations. Simultaneously, the use of advanced magnetic shielding and signal processing circuitry effectively improves the transformer's anti-interference capability and measurement accuracy, ensuring data accuracy. Furthermore, this transformer supports both wired and wireless data transmission, enabling real-time remote data monitoring and significantly enhancing the intelligence level of the power system. Its simple and reasonable structural design makes installation, disassembly, and maintenance very convenient and quick, reducing operation and maintenance costs and providing strong support for the stable operation of the power system. It solves the problem that traditional current-voltage transformers typically employ an integrated design with fixed functions, making it difficult to adapt to diverse measurement needs. Attached Figure Description

[0019] Figure 1This is a structural diagram of the entire utility model;

[0020] Figure 2 This is a schematic diagram of the connection module of this utility model;

[0021] Figure 3 This is a schematic diagram of the current transformer module of this utility model.

[0022] In the diagram: 1. Base; 101. Splicing guide rail; 102. Positioning slot; 103. Hall sensor; 2. Current transformer module; 201. Sliding sleeve; 202. Plug-in terminal; 203. Magnetic shielding layer; 3. Voltage transformer module; 4. Connection module; 401. Signal processing circuit; 402. Elastic contact; 403. Communication interface; 407. Spring mechanism; 4071. Electromagnet; 4072. Compression spring; 4073. Push rod. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all 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 protection scope of the present utility model.

[0024] To facilitate understanding of this utility model, a more comprehensive description will be given below with reference to the accompanying drawings. Several embodiments of this utility model are provided. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0025] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0027] For examples, please refer to Figure 1-3 This utility model provides a technical solution:

[0028] A multi-module, modular, connectable current and voltage transformer includes a base 1, current transformer modules 2, voltage transformer modules 3, and a connection module 4. The base 1 is a rectangular insulating shell with a top section equipped with a splicing guide rail 101 and a positioning slot 102. The bottoms of the current transformer modules 2 and 3 are respectively equipped with sliding sleeves 201 that match the splicing guide rail 101. The side walls of the current transformer modules 2 and 3 are equipped with plug-in terminals 202 and magnetic shielding layers 203. The connection module... 4 has an H-shaped insulating housing. The connection module 4 integrates a signal processing circuit 401. The side walls of the connection module 4 have elastic contacts 402 that match the plug-in terminals 202. The top of the module has a communication interface 403. By sliding the connection module 4 along the splicing guide rail 101 of the base 1 to the target position and fixing it with bolts, and then sliding the current transformer module 2 and voltage transformer module 3 along the guide rail 101 to both sides of the connection module 4, the magnetic shielding layer 203 on the side wall of the module triggers the Hall sensor 103, stimulating... The live spring mechanism 407 automatically pops out the elastic contact 402 and connects it to the plug-in terminal 202. Tighten the bolts of the sliding sleeve 201 and the connecting module 4 to ensure the module is fixed in position. Connect the conductor to be measured to the wiring terminal of the current module 2 and the bus voltage to the wiring terminal of the voltage module 3. The current / voltage signal is transmitted to the signal processing circuit 401 of the connecting module 4 through the plug-in terminal 202 and the elastic contact 402. The signal processing circuit 401 performs AD conversion and digital filtering on the collected current / voltage signal and uploads the data through the communication interface 403. The communication interface supports RS485 wired transmission or LoRa wireless transmission. The data can be uploaded to the monitoring system in real time. Multiple bases 1 can be spliced ​​together through the cascade interfaces at both ends of the base 1 to achieve large-scale monitoring. The grounding copper busbar of the cascade interface is connected to the grounding wire to ensure the overall electromagnetic shielding and safe grounding of the system. When the module needs to be replaced, loosen the bolts and slide the module along the guide rail. The spring mechanism 407 automatically resets, the elastic contact 402 retracts, and the electrical connection is disconnected.

[0029] The splicing guide rail 101 has a T-shaped protrusion structure, and the sliding sleeve 201 has several embedded balls, which facilitates sliding along the length of the splicing guide rail 101, making installation and disassembly flexible and convenient. Users can select and combine different modules according to actual needs to adapt to different measurement requirements or system configurations. The magnetic shielding layer 203 is composed of a double layer of permalloy foil and nanocrystalline soft magnetic composite material, and the outer layer is covered with an epoxy resin insulation layer, which improves the anti-interference ability of the current transformer and reduces the influence of external electromagnetic fields on the measurement results. The signal processing circuit 401 includes an AD sampling chip and a wireless transmission unit. The communication interface 403 supports RS485 and LoRa protocols, enabling the current transformer to process measurement data in real time and transmit it remotely through the communication interface 403. The side wall of the connection module 4 has an embedded Hall sensor 103, and the magnetic shielding layer 203 has an embedded permanent magnet, realizing intelligent identification and connection status monitoring of the module. A spring mechanism 407 is provided on one side of the elastic contact 402. The spring mechanism 407 includes an electromagnet 4071. The base 1 has a compression spring 4072 and a push rod 4073. One end of the push rod 4073 is repelled by the electromagnet 4071. One end of the compression spring 4072 is provided with a push plate, which is connected to the elastic contact 402. One end of the push rod 4073 is fixedly connected to the push plate, and the other end of the compression spring 4072 is fixedly connected to the side wall of the connecting module 4, ensuring a reliable connection between the elastic contact 402 and the plug-in terminal 202. The base 1 has cascade interfaces at both ends, including a power bus and a communication bus. The bases 1 are spliced ​​together via cascading interfaces. Grounding copper busbars are pre-embedded in the splicing guide rail 101. Both ends of the base 1 are provided with tin-plated copper busbars and grounding wires are connected by bolts. The grounding copper busbars and grounding wires are conductive, which allows multiple bases to be easily cascaded together to form a larger-scale measurement system. The connecting module 4 and the splicing guide rail 101 are slidably connected, and the sliding sleeve 201, the connecting module 4 and the base 1 are fixed in position by bolts. The base 1 is provided with several mounting holes, which makes installation and maintenance very simple and quick.

[0030] The working process of this utility model is as follows: When using this type of multi-module connectable current and voltage combined transformer, firstly, slide the connecting module 4 along the splicing guide rail 101 of the base 1 to the target position and fix it with bolts. Then, slide the current transformer module 2 and voltage transformer module 3 along the guide rail 101 to both sides of the connecting module 4. The magnetic shielding layer 203 on the side wall of the module triggers the Hall sensor 103, activating the spring mechanism 407, so that the elastic contact 402 automatically pops out and conducts to the plug-in terminal 202. Tighten the sliding sleeve 201 and the bolts of the connecting module 4 to ensure that the module position is fixed. Connect the conductor to be measured to the wiring terminal of the current module 2, and connect the bus voltage to the wiring terminal of the voltage module 3. The current / voltage signal is transmitted. The signal is transmitted to the signal processing circuit 401 of the connection module 4 through the plug-in terminal 202 and the elastic contact 402. The signal processing circuit 401 performs AD conversion and digital filtering on the collected current / voltage signal and uploads the data through the communication interface 403. The communication interface supports RS485 wired transmission or LoRa wireless transmission. The data can be uploaded to the monitoring system in real time. Multiple bases 1 can be spliced ​​together through the cascade interfaces at both ends of the base 1 to achieve large-scale monitoring. The grounding copper busbar of the cascade interface is connected to the grounding wire to ensure the overall electromagnetic shielding and safe grounding of the system. When the module needs to be replaced, the bolts are loosened and the module is slid along the guide rail. The spring mechanism 407 automatically resets and the elastic contact 402 retracts, disconnecting the electrical connection.

[0031] All standard parts used in this application can be purchased from the market. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. Among them, the Hall sensor and voltage / current transformer module are existing mature technologies. Their control circuits can be implemented by those skilled in the art through simple circuit connection. They are common knowledge in the field. Therefore, this application will not explain the control method and circuit connection in detail.

[0032] 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 multi-module connectable current and voltage combined transformer, comprising a base (1), a current transformer module (2), a voltage transformer module (3), and a connection module (4), characterized in that: The base (1) is a rectangular insulating shell, and its top is provided with a splicing guide rail (101) and a positioning slot (102); The bottom of the current transformer module (2) and the voltage transformer module (3) are respectively provided with a sliding sleeve (201) that matches the splicing guide rail (101). The side walls of the current transformer module (2) and the voltage transformer module (3) are provided with plug-in terminals (202) and magnetic shielding layers (203). The connection module (4) is an H-shaped insulating shell. The connection module (4) integrates a signal processing circuit (401). The two sides of the side wall of the connection module (4) are provided with elastic contacts (402) that match the plug-in terminals (202). The top of the connection module (4) is provided with a communication interface (403).

2. The multi-module connectable current and voltage combined transformer according to claim 1, characterized in that: The splicing guide rail (101) has a T-shaped protrusion structure, and the sliding sleeve (201) has several balls embedded in it, which facilitates sliding along the length direction of the splicing guide rail (101).

3. A multi-module connectable current and voltage combined transformer according to claim 1, characterized in that: The magnetic shielding layer (203) is composed of a double layer of permalloy foil and nanocrystalline soft magnetic composite material, and the outer layer is covered with an epoxy resin insulating layer.

4. A multi-module connectable current and voltage combined transformer according to claim 1, characterized in that: The signal processing circuit (401) includes an AD sampling chip and a wireless transmission unit, and the communication interface (403) supports RS485 and LoRa protocols.

5. A multi-module connectable current and voltage combined transformer according to claim 1, characterized in that: The side wall of the connection module (4) is embedded with a Hall sensor (103), and a permanent magnet is embedded in the magnetic shielding layer (203). A spring mechanism (407) is provided on one side of the elastic contact (402). The spring mechanism (407) includes an electromagnet (4071), a compression spring (4072), and a push rod (4073). One end of the push rod (4073) is repelled by the electromagnet (4071). One end of the compression spring (4072) is provided with a push plate. The push plate is connected to the elastic contact (402). One end of the push rod (4073) is fixedly connected to the push plate. The other end of the compression spring (4072) is fixedly connected to the side wall of the connection module (4).

6. A multi-module connectable current and voltage combined transformer according to claim 1, characterized in that: The base (1) is provided with cascading interfaces at both ends. The cascading interfaces include a power bus and a communication bus. Several bases (1) are spliced ​​together through the cascading interfaces. Grounding copper busbars are pre-embedded in the splicing guide rail (101). Tin-plated copper busbars are provided at both ends of the base (1) and grounding wires are connected by bolts. The grounding copper busbars are connected to the grounding wires.

7. A multi-module connectable current and voltage combined transformer according to claim 1, characterized in that: The connecting module (4) and the splicing guide rail (101) are slidably connected, and the sliding sleeve (201), the connecting module (4) and the base (1) are fixed in position by bolts. The base (1) is provided with several mounting holes.

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