CN219267581U

CN219267581U - Loop-triggered leakage circuit breaking driving module of switching power supply

Info

Publication number: CN219267581U
Application number: CN202223059021.XU
Authority: CN
Inventors: 王明中
Original assignee: Guangdong Wangjia Industrial Technology Co ltd
Current assignee: Guangdong Wangjia Industrial Technology Co ltd
Priority date: 2022-11-10
Filing date: 2022-11-10
Publication date: 2023-06-27
Anticipated expiration: 2032-11-10

Abstract

The utility model relates to the field of power circuit breakers, in particular to an electric leakage breaker, a loop triggering type electric leakage breaker driving module of a switch power supply is composed of a triggering circuit board and a driving electromagnet, a high-voltage power supply input end, a driving power supply output end and a triggering detection line access end are arranged on the triggering circuit board, a voltage transformation power supply module, a silicon controlled switch module and a voltage reduction constant voltage chip are arranged in the triggering circuit board, the output end of the voltage transformation power supply module is connected with the silicon controlled switch module through an input wire of the silicon controlled switch module, the driving power supply output end on the silicon controlled switch module is connected with the driving electromagnet through an electromagnet power wire, the voltage reduction constant voltage chip module is connected with the output end of the voltage transformation power supply module through a chip module common electrode wire, the triggering output electrode of the chip module is connected with the triggering electrode of the silicon controlled switch module through a triggering connecting wire, and the triggering detection line access end on the voltage reduction constant voltage chip module is connected with a loop acquisition wire.

Description

Loop-triggered leakage circuit breaking driving module of switching power supply

Technical Field

The utility model relates to the field of power circuit breakers, in particular to an electric leakage circuit breaker.

Background

Various power circuit breakers are popularized in household power or industrial power, in order to prevent electric leakage accidents of electrical equipment, the electric leakage circuit breakers are installed to protect many cases, but the existing electric leakage circuit breakers can work normally only by effective grounding of a ground wire, and many household power supplies can be connected with the ground wire because of poor ground wire connection or because of cost saving, the household appliances have the risk of electric shock when the shell is electrified once electric leakage occurs, and because the ground wire has no effective grounding, the electric leakage switch cannot trip when electric leakage occurs, so that the existing electric leakage circuit breakers have great potential safety hazards.

Disclosure of Invention

The utility model provides a loop trigger type leakage circuit breaking driving module of a switching power supply, which aims to solve the defects of the existing leakage circuit breaker.

Drawings

The utility model is explained in further detail below with reference to the drawings.

Figure 1 is a schematic diagram of the overall structure of the module,

figure 2 is a schematic diagram of the structure of the independent application of the module,

fig. 3 is a schematic diagram of a compatibility configuration of the module applied to a conventional leakage switch or a conventional circuit breaker.

Detailed Description

As can be seen from fig. 1, the module is composed of a voltage-variable power supply module (1), a silicon controlled switch module (2), a voltage-reducing constant voltage chip module (3) and a driving electromagnet (4), wherein the voltage-variable power supply module, the silicon controlled switch module and the voltage-reducing constant voltage chip module are jointly arranged on a circuit board to form an integral trigger circuit board (5), the voltage-variable power supply module (1) is used for reducing a 220V high-voltage power supply to a driving power supply of the driving electromagnet and then inputting the driving power supply to the silicon controlled switch module (2), the silicon controlled switch module is used for controlling the switching value of the power supply input by the voltage-variable power supply module and then inputting the switching value to the driving electromagnet (4), the voltage-reducing constant voltage chip module is used for reducing the power supply acquired by a loop acquisition line (6) and inputting the triggering electrode of the silicon controlled switch module (2), thus the voltage-variable power supply module (1) is provided with a high-voltage power supply input end (7), the high-voltage power supply input end (8) is connected with a terminal of a 220V power supply by using a wire, the output end of the voltage-variable power supply module is connected with the voltage-variable power supply module (2) by using a wiring, the voltage-variable voltage constant voltage chip module (3) is connected with the power supply module (11), the trigger output electrode (12) of the chip module is connected with the trigger electrode (14) of the thyristor switch module by a trigger connecting wire (13), the trigger detecting wire access end (15) is connected with equipment needing electric leakage acquisition by a loop acquisition wire (6), the voltage reduction constant voltage capacity of the voltage reduction constant voltage chip module (3) is 36V to 220V, the voltage reduction constant voltage chip module is used for reducing the voltage of the power supply acquired by the loop acquisition wire (6) or inputting the power supply with the constant voltage of 3V into the trigger electrode (14) of the thyristor switch module, the voltage transformation power module (1) is used for reducing the voltage of the 220V power supply and inputting the reduced voltage to the thyristor switch module (2) and the voltage reduction constant voltage chip module (3) during the operation of the module, at the moment, the power supply channel of the input driving electromagnet (4) of the silicon controlled switch module (2) is in a normally open state, a loop acquisition line (6) acquires equipment needing electric leakage acquisition in real time, when the loop acquisition line acquires current, a voltage-reducing constant-voltage chip module (3) reduces the voltage to 3V and then inputs the voltage to a trigger electrode (14) of the silicon controlled switch module (2), the silicon controlled switch module triggers and then conducts the driving power supply of the input driving electromagnet (4), thereby the driving electromagnet works to pull a tripping device to complete tripping action, two end electrodes of a test button (20) are connected with a chip module common electrode wire (11) and a chip module trigger output electrode (12) by using wires, when the test button is manually pressed, the power supply of the common electrode wire directly enters the trigger electrode of the controllable silicon switch module to enable the controllable silicon switch module to act, and therefore whether the system works normally or not is detected.

As can be seen from fig. 2, when the module is independently applied, the module is independently matched with the existing tripping device (16), the tripping device is an existing breaker tripping assembly, the tripping device is driven by a driving electromagnet (4) at the rear end to complete tripping and closing actions, the front end of the tripping device is connected with a wire inlet end (17), the rear end is connected with a wire outlet end (18), the wire inlet end is used for connecting a mains supply, the wire outlet end is used for connecting electrical equipment, the high-voltage power supply input end of a trigger circuit board is connected with the wire outlet end (18) by using a power supply board input wire (19), the driving power supply output end of the trigger circuit board is connected with the driving electromagnet (4) by using an electromagnet power supply wire (10), the trigger detection wire access end is connected with a loop wire interface (21) by using a loop acquisition wire (6), the equipment can be configured, when in installation, the wire inlet end (17) is connected with a mains supply, the wire outlet end (18) is connected with a power wire of electric equipment, the ground wire of the electric equipment is connected with the loop wire interface (21), the tripping device is upwards dialed to be in a conducting state, the equipment can enter a working state at the moment, when the loop wire interface (21) detects the current leaked by the electric equipment, the triggering circuit board (5) is started and the power supply of the input driving electromagnet (4) is conducted, the driving electromagnet generates magnetism to pull the tripping device (16) to act so as to disconnect a circuit channel, thereby protecting the electric equipment, preventing a human body from touching and touching electric appliances with electric leakage to generate electric shock accidents, after the test button (20) is manually pressed, the system directly triggers the driving electromagnet to work, so that the equipment is detected.

As can be seen from fig. 3, when the module is applied to the compatibility configuration of a conventional leakage switch or a conventional circuit breaker, the basic configuration and the circuit structure of the conventional leakage switch or the conventional circuit breaker are not changed, the original switch original circuit board (22) controls the driving electromagnet (4) to enable the tripping device (16) to generate tripping action, when the module compatibility configuration is adopted, the triggering circuit board (5) is arranged at a gap on one side, the circuit board input line (19) is connected with the wire outlet end (18), the electromagnet power line (10) is connected with the driving electromagnet (4), the loop acquisition line (6) is connected with the loop wiring port (21), the equipment can complete the compatibility configuration, when the equipment is in operation, the original switch original circuit board (22) drives the tripping device to trip when the electricity consumption equipment generates circuit breaking or overload, and the tripping device is driven by the triggering circuit board (5) to trip, so that the equipment has the functions of tripping of breaking, tripping and no ground wire tripping, and when the module compatibility configuration is applied to the three-phase electrical switch configuration, the residual voltage transformation capacity of the triggering circuit board is only required to be lifted to be identical to the configuration of 380V and 220V.

When the module is applied, the trigger circuit board (5) is configured with the existing tripping device (16) in an embedded mode, the outside is sealed by the insulating shell, the wire inlet end (17) is connected with the mains supply wire, the wire outlet end (18) is connected with the power wire of the electrical equipment, the loop acquisition wire (6) is connected with the third group of ground wires of the power wire of the electrical equipment, the equipment can be installed, when the electrical equipment is electrified due to electric leakage caused by failure reasons, the leaked current can enter the trigger circuit board (5) through the third group of ground wires after entering the loop acquisition wire (6), and the trigger circuit board is connected with the power supply of the input driving electromagnet (4) after receiving an electric leakage current signal, so that the tripping action is realized by pulling the tripping device by the driving electromagnet.

The working principle of the module is to collect incoming line leakage current of a third group of loop wires (ground wires of electrical equipment), so that the trigger circuit board outputs current to enable the tripping device to perform tripping operation, and therefore when the protected electrical equipment is subjected to power failure tripping operation at the moment of electric leakage, the whole working process can work normally without grounding the ground wires of a power supply grid, and the defect that the ground wires are required to be effectively grounded in the traditional leakage circuit breaker is fundamentally overcome, so that the equipment can provide safety guarantee in more occasions, particularly in the occasion that the ground wires are not effectively grounded, can be independently configured and applied, can also be compatible with the traditional circuit breaker, and can simultaneously meet the functions of circuit breaking tripping and no ground wire leakage tripping.

While the preferred embodiment of the present utility model has been described in detail, the utility model is not limited to the embodiment, and various equivalent modifications and substitutions can be made by those skilled in the art without departing from the spirit of the utility model, and these modifications and substitutions are intended to be included in the scope of the present utility model as defined in the appended claims.

Claims

1. The loop triggering type leakage circuit breaking driving module of the switching power supply comprises a triggering circuit board (5) and a driving electromagnet (4), and is characterized in that; the high-voltage power supply is characterized in that a trigger circuit board (5) is provided with a high-voltage power supply input end (7), a drive power supply output end (9) and a trigger detection line access end (15), the high-voltage power supply input end is connected with a mains supply interface by utilizing a circuit board input line (19), the drive power supply output end (9) is connected with a drive electromagnet (4) by utilizing an electromagnet power line (10), and the trigger detection line access end (15) is connected with a ground wire of electric equipment by utilizing a loop acquisition line (6).

2. The loop-triggered leakage circuit breaker driving module of a switching power supply of claim 1, wherein; the internal part of the trigger circuit board (5) is provided with a voltage transformation power supply module (1), a silicon controlled switch module (2) and a voltage reduction constant voltage chip module (3).

3. The loop-triggered leakage circuit breaker driving module of a switching power supply of claim 2, wherein; the output end of the voltage transformation power supply module is connected with the silicon controlled switch module (2) by utilizing a silicon controlled switch module input line (8), a driving power supply output end (9) on the silicon controlled switch module is connected with a driving electromagnet (4) by utilizing an electromagnet power line (10), a voltage reduction constant voltage chip module (3) is connected with the output end of the voltage transformation power supply module by utilizing a chip module common electrode line (11), a chip module trigger output electrode (12) is connected with a trigger electrode (14) of the silicon controlled switch module by utilizing a trigger connecting line (13), a trigger detection line access end (15) on the voltage reduction constant voltage chip module is connected with a loop acquisition line, and a test button (20) is arranged between the chip module common electrode line (11) and the chip module trigger output electrode (12).

4. The loop-triggered leakage circuit breaker driving module of a switching power supply of claim 1, wherein; the input voltage of the voltage transformation power supply module (1) in the trigger circuit board (5) is single-phase 220V and three-phase 380V.

5. The loop-triggered leakage circuit breaker driving module of a switching power supply of claim 2, wherein; the voltage reducing constant voltage capacity of the voltage reducing constant voltage chip module (3) is 36V to 220V.

6. The loop-triggered leakage circuit breaker driving module of a switching power supply of claim 1, wherein; the application mode of the module is independent application and compatibility configuration application for a traditional leakage switch or a traditional breaker.