Switching equipment for converting electromagnetic signal into electronic signal

Abstract

Switching equipment for converting electromagnetic signals into electronic signals comprises a box body, the box body comprises a front box plate, side box plates and an upper box plate, and a power transformer and a signal conversion plate are arranged on the inner side of the front box plate; the signal conversion board is provided with a signal acquisition module and a circuit protection module, the signal acquisition module is electrically connected with the circuit protection module, the signal acquisition module comprises two mutual inductors, the two mutual inductors are connected in parallel, and the circuit protection module is electrically connected with the two mutual inductors. The mutual inductor is used for converting an electromagnetic high-voltage or high-current signal into a secondary electronic low-voltage analog signal; the side box plate is provided with an electromagnetic signal input interface and an electronic signal output interface. An electromagnetic large-voltage or large-current signal is converted into a secondary electronic low-voltage analog signal, and an electromagnetic signal input interface and an electronic signal output interface are arranged on the box body, so that one device is applicable to two different standards.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit breaker feeder terminals, in particular to a switching device for converting electromagnetic signals into electronic signals. Background Art

[0002] Currently, circuit breaker feeder terminals (FTUs) on the market have two different signal acquisition standards: electromagnetic and electronic. Consequently, two different FTUs are often used for signal acquisition. This increases costs and requires coordinating the work schedules of the two FTUs.

[0003] Therefore, everyone hopes to use one model of feeder terminal to meet two different input signal standards at the same time, which not only enhances the applicability of the feeder terminal but also saves time and labor costs. Utility Model Content

[0004] The purpose of the present invention is to provide a switching device for converting electromagnetic signals into electronic signals, so as to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A switching device for converting electromagnetic signals into electronic signals, comprising a box body, wherein the box body comprises a front box plate, side box plates and an upper box plate, and a power transformer and a signal conversion board are arranged on the inner side of the front box plate;

[0007] The signal conversion board is equipped with a signal acquisition module and a circuit protection module, the signal acquisition module and the circuit protection module are electrically connected, the signal acquisition module includes two mutual inductors, the two mutual inductors are connected in parallel, and the mutual inductors are used to convert electromagnetic high voltage or high current signals into secondary electronic low voltage analog signals;

[0008] The side box plate is provided with an electromagnetic signal input interface and an electronic signal output interface.

[0009] In a possible implementation, the circuit protection module includes a coupler and a diode, the diode and the coupler are connected in parallel, and the diode or the coupler is connected in series with a resistor and then grounded.

[0010] In a possible implementation, the power transformer includes a main power supply and a backup power supply, and the power supply of the main power supply or the backup power supply is 24V.

[0011] In a possible implementation manner, an interference signal shielding layer is provided on the inner side of the upper box plate.

[0012] In a possible implementation, the electromagnetic signal input interface includes a voltage signal input interface, a current signal input interface, and a remote signaling and remote control input interface, and the electronic signal output interface uses a six-core aviation plug.

[0013] In a possible implementation, the voltage signal input interface uses a six-core aviation plug, the current signal input interface uses a five-core aviation plug, and the remote signal and remote control input interface uses a fourteen-core aviation plug.

[0014] Compared with the prior art, the utility model has the following advantages:

[0015] Two mutual inductors are used to convert electromagnetic high voltage or high current signals into secondary electronic low voltage analog signals. By setting an electromagnetic signal input interface and an electronic signal output interface on the box, the feeder terminal of the electronic signal can also receive the electromagnetic signal, realizing the function of one device being applicable to two different standards. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 for Figure 1 Circuit diagram of the power transformer;

[0018] Figure 3 This is a circuit structure diagram of the signal acquisition module of the present utility model;

[0019] Figure 4 This is a circuit structure diagram of the circuit protection module of the present utility model. DETAILED DESCRIPTION

[0020] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the following is a detailed description of the specific implementation method, structure, characteristics and effects of the present invention in combination with the accompanying drawings and preferred embodiments.

[0021] like Figure 1-4 As shown, a switching device for converting electromagnetic signals into electronic signals includes a box body 100, wherein the box body 100 includes a front box plate 10, side box plates 50 and an upper box plate 40, and a power transformer 20 and a signal conversion board 30 are arranged inside the front box plate 10;

[0022] The signal conversion board 30 is equipped with a signal acquisition module 31 and a circuit protection module 32. The signal acquisition module 31 and the circuit protection module 32 are electrically connected. The signal acquisition module 31 includes two mutual inductors connected in parallel. The mutual inductors are used to convert electromagnetic high voltage or high current signals into secondary electronic low voltage analog signals.

[0023] The side box panel 50 is provided with an electromagnetic signal input interface and an electronic signal output interface 54. An interference signal shielding layer is provided on the inner side of the upper box panel 40, which can effectively shield interference signals. The shielding layer can also be applied to the remaining surfaces of the box body 100. The electromagnetic signal input interface includes a voltage signal input interface 51, a current signal input interface 52, and a remote control input interface 53. The electronic signal output interface 54 uses a six-core aviation plug. The voltage signal input interface 51 uses a six-core aviation plug, the current signal input interface 52 uses a five-core aviation plug, and the remote control input interface 53 uses a fourteen-core aviation plug.

[0024] Among them, the mutual inductor is preferably of low impedance type, and the mutual inductor is connected in parallel with the TVS tube to increase the stability of the signal acquisition module.

[0025] like Figure 4 As shown, the circuit protection module 32 includes a coupler and a diode, the diode and the coupler are connected in parallel, and the diode or the coupler is connected in series with a resistor and then grounded.

[0026] like Figure 2 As shown, the power transformer includes a main power supply 21 and a backup power supply 22. The power supply of the main power supply 21 or the backup power supply 22 is 24 V. The main power supply and the backup power supply 22 use the same power supply, and the circuits of the two power supplies are the same.

[0027] The signal conversion board of the utility model can transmit the high-voltage side signal to the secondary equipment through the optical fiber with excellent insulation performance. Since it does not contain an iron core, problems such as magnetic saturation and ferromagnetic resonance are eliminated, so that the transient response and stability of the conversion equipment are good, and the high reliability of the system operation is guaranteed.

[0028] The signal in the signal conversion template is transmitted through optical fiber, which makes the high-voltage circuit and the secondary circuit completely isolated electrically, and has good anti-electromagnetic interference ability and high signal conversion accuracy.

[0029] In addition, the circuit protection module completely isolates high and low voltages, eliminating the risk of open circuit high voltage on the low-voltage side. Its excellent insulation ensures that even if the front-stage circuit fails or even short-circuits and burns out, the integrity of the subsequent critical circuits will not be affected, reducing losses caused by failures and significantly improving safety. Safety precautions can also be placed on the outer surface of the housing 100 to provide users with a warning.

[0030] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "two ends", "left and right", "front and back", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0031] In the present invention, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0032] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A switching device for converting electromagnetic signals into electronic signals, comprising a box body (100), wherein the box body (100) comprises a front box plate (10), side box plates (50) and an upper box plate (40), and a power transformer (20) and a signal conversion board (30) are arranged on the inner side of the front box plate (10); The signal conversion board (30) is equipped with a signal acquisition module (31) and a circuit protection module (32), the signal acquisition module (31) and the circuit protection module (32) are electrically connected, the signal acquisition module (31) includes two mutual inductors, the two mutual inductors are connected in parallel, and the mutual inductors are used to convert electromagnetic high voltage or high current signals into secondary electronic low voltage analog signals; An electromagnetic signal input interface and an electronic signal output interface (54) are provided on the side box plate (50).

2. The switching device for converting electromagnetic signals into electronic signals according to claim 1, characterized in that: The circuit protection module (32) comprises a coupler and a diode, the diode and the coupler are connected in parallel, and the diode or the coupler is connected in series with a resistor and then grounded.

3. The switching device for converting electromagnetic signals into electronic signals according to claim 1, characterized in that: The power transformer (20) comprises a main power supply (21) and a backup power supply (22), and the power supply of the main power supply (21) or the backup power supply (22) is 24V.

4. The switching device for converting electromagnetic signals into electronic signals according to claim 1, characterized in that: An interference signal shielding layer is provided on the inner side of the upper box plate (40).

5. The switching device for converting electromagnetic signals into electronic signals according to claim 1, characterized in that: The electromagnetic signal input interface comprises a voltage signal input interface (51), a current signal input interface (52) and a remote signaling and remote control input interface (53).

6. The switching device for converting electromagnetic signals into electronic signals according to claim 5, characterized in that: The voltage signal input interface (51) adopts a six-core aviation plug, the current signal input interface (52) adopts a five-core aviation plug, the remote signal and remote control input interface (53) adopts a fourteen-core aviation plug, and the electronic signal output interface (54) adopts a six-core aviation plug.

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