A reclosing switch

Abstract

This utility model relates to the field of reclosing switch technology, specifically a reclosing switch. The utility model includes a housing, a control panel mounted on the front surface of the housing, and a back plate connected to the back of the housing by screws. An installation compartment is formed on the front surface of the housing, and an operating mechanism and a DC motor are housed inside the installation compartment. An installation plate is fixedly mounted inside the housing near the lower part, and a collection module is mounted on the upper surface of the installation plate. A current transformer is installed at the bottom of the collection module. The operating mechanism includes a trigger spring and a connecting plate. This utility model reduces the overall size of the reclosing switch by using a DC motor instead of the traditional large-volume AC motor, thus forming a reclosing switch that conforms to power grid development and can be widely used. Furthermore, by using a specific collection module to supply current transformers for installation, the overall size of the reclosing switch is reduced while maintaining metering functionality.

Description

Technical Field

[0001] This utility model relates to the field of reclosing switch technology, specifically a reclosing switch. Background Technology

[0002] A reclosing switch is an automatic control device in a power system. It is used to automatically reclose the circuit breaker after a predetermined time following a circuit breaker tripping due to a fault, in an attempt to restore power supply. A circuit breaker is a switching device that can close, carry, and interrupt current under normal circuit conditions and close, carry, and interrupt current under abnormal circuit conditions within a specified time. Circuit breakers can be used to distribute electrical energy, infrequently start asynchronous motors, and protect power lines and motors.

[0003] In existing technologies, reclosing switches often use AC motor-driven operating mechanisms. However, AC motor-driven operating mechanisms have problems such as large size and loose structure, making it difficult to integrate additional functions such as metering in a limited space. This makes it difficult to balance compactness with multiple metering functions. With the development of smart grids, the market urgently needs miniaturized reclosing switches with current metering functions. Utility Model Content

[0004] The purpose of this invention is to provide a reclosing switch to solve the problems mentioned in the background art.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] A reclosing switch includes a housing, a control panel mounted on the front surface of the housing, a back plate connected to the back of the housing by screws, an installation compartment formed on the front surface of the housing, an operating mechanism and a DC motor disposed inside the installation compartment, an installation plate fixedly mounted inside the housing near the lower part, a collection module mounted on the upper surface of the installation plate, and a current transformer mounted at the bottom of the collection module.

[0007] The operating mechanism includes a trigger spring and a connecting plate. The trigger spring is fixedly installed inside the installation chamber, and the connecting plate is rotatably connected to the installation chamber via a shaft.

[0008] Preferably, the operating mechanism further includes a movable plate, which is fixedly installed at the bottom of the installation chamber. A second linkage plate is movably installed on the outer wall of the movable plate, and a trigger plate is fixedly connected to one end of the second linkage plate.

[0009] Preferably, the first linkage piece is movably installed on the outer wall of the second linkage piece, and the first linkage piece and the second linkage piece cooperate with each other.

[0010] Preferably, a connecting piece is fixedly connected to the outer wall of the DC motor, and one end of the connecting piece is connected to the outer wall of the connecting plate.

[0011] Preferably, the housing is provided with a plurality of arc extinguishing mechanisms and triggering mechanisms, and the arc extinguishing mechanisms and triggering mechanisms cooperate with each other. The inner wall of the housing is provided with a plurality of mounting holes near the upper and lower ends.

[0012] Preferably, a control panel is mounted on the front surface of the outer casing, and a display screen and several control buttons are mounted on the outer wall of the control panel.

[0013] The beneficial effects of this utility model are:

[0014] 1. In this utility model, by setting a DC motor to replace the traditional large-volume AC motor, the installation space can be effectively saved, the overall size of the reclosing switch can be reduced, and the reclosing switch can be formed in conjunction with the drive operation mechanism, which is in line with the development of the power grid and can be widely used.

[0015] 2. In this utility model, a specific assembly module is provided for the installation and use of the current transformer, which enables the metering function to be integrated into a small and compact reclosing switch. This reduces the overall size of the reclosing switch while ensuring the metering function, thus balancing compactness and multiple metering functions. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the outer shell and the back plate in this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the DC motor and control panel in this utility model;

[0020] Figure 4 This is a partial structural schematic diagram of the present invention;

[0021] Figure 5 This is a schematic diagram of the structure of the trigger piece and the movable piece in this utility model;

[0022] Figure 6 This utility model Figure 5 Enlarged view of point A in the middle.

[0023] The attached figures are labeled as follows:

[0024] 1. Housing; 2. Backplate; 3. DC motor; 4. Current transformer; 5. Arc extinguishing mechanism; 6. Triggering mechanism; 7. Control panel; 8. Mounting compartment; 9. Trigger plate; 10. Movable plate; 11. Linkage plate one; 12. Linkage plate two; 13. Connecting plate; 14. Connecting plate; 15. Display screen; 16. Control button; 17. Mounting plate; 18. Assembly module; 19. Actuating spring; 20. Mounting hole. Detailed Implementation

[0025] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] A reclosing switch, such as Figures 1-6 As shown, the device includes a housing 1, a control panel 7 mounted on the front surface of the housing 1, and a back plate 2 connected to the back of the housing 1 by screws. The back plate 2 is designed to be detachable by screws for easy maintenance. An installation compartment 8 is provided on the front surface of the housing 1. An operating mechanism and a DC motor 3 are installed inside the installation compartment 8. An installation plate 17 is fixedly installed inside the housing 1 near the lower part. A collection module 18 is mounted on the upper surface of the installation plate 17. A current transformer 4 is installed at the bottom of the collection module 18. The operating mechanism includes a trigger spring 19 and a connecting plate 14. The trigger spring 19 is fixedly installed inside the installation compartment 8, and the connecting plate 14 is rotatably connected to the installation compartment 8 via a shaft.

[0027] The operating mechanism also includes a movable plate 10, which is fixedly installed at the bottom of the installation chamber 8. A second linkage plate 12 is movably installed on the outer wall of the movable plate 10. A trigger plate 9 is fixedly connected to one end of the second linkage plate 12. A first linkage plate 11 is movably installed on the outer wall of the second linkage plate 12. The first linkage plate 11 and the second linkage plate 12 cooperate with each other. The first linkage plate 11 and the second linkage plate 12 can mesh and drive under the drive of the connecting plate 14, driving the trigger plate 9 to press and separate the movable plate 10, thereby realizing the contact opening and closing. A connecting plate 13 is fixedly connected to the outer wall of the DC motor 3, and one end of the connecting plate 13 is connected to the outer wall of the connecting plate 14. The trigger plate 9 moves under control, which can ensure the rapid disconnection of the reclosing switch.

[0028] When in use, when the DC motor 3 starts, it drives the connecting piece 13 to rotate, which in turn drives the connecting plate 14 to rotate, causing the connecting plate 14 to drive the first linkage piece 11 to swing, thereby making the first linkage piece 11 mesh with the second linkage piece 12 for transmission, and finally driving the trigger piece 9 to press and separate the movable piece 10 to realize the contact opening and closing.

[0029] The DC motor 3 replaces the existing large-volume AC motor, saving space in the installation compartment 8, thereby reducing the overall size of the reclosing switch, which is in line with the development of the power grid and enables the reclosing switch to be widely used. The contact spring 19 can provide the elastic force for contact reset.

[0030] By connecting the connecting plate 14 to the external handle, the connecting plate 14 can be manually rotated through the handle, which can also cause the trigger piece 9 to press and separate the movable piece 10, thereby realizing the contact opening and closing of the reclosing switch. This allows the reclosing switch to be operated in both manual and automatic modes.

[0031] The housing 1 has several arc extinguishing mechanisms 5 and triggering mechanisms 6 inside, and the arc extinguishing mechanisms 5 and triggering mechanisms 6 cooperate with each other. Several mounting holes 20 are provided through the inner wall of the housing 1 near the upper and lower ends. The mounting holes 20 are used to connect and install external components.

[0032] A control panel 7 is installed on the front surface of the outer casing 1. A display screen 15 and several control buttons 16 are installed on the outer wall of the control panel 7. The reclosing switch can be operated through the control buttons 16. The slant trigger mechanism 6 detects the overcurrent signal and controls the DC motor 3, so that the operating mechanism can be started instantly to forcibly disconnect the contacts. At the same time, the arc extinguishing mechanism 5 acts synchronously to suppress the arc. This is existing technology and will not be described in detail. The output terminal of the current transformer 4 is connected to the input terminal of the control panel 7, and the output terminal of the control panel 7 is electrically connected to the input terminal of the display screen 15.

[0033] Specifically, the current transformer 4 is embedded in the collection module 18. The collection module 18 has a built-in signal conditioning circuit that converts the analog signal of the current transformer 4 into a digital signal, directly detects the line current, and transmits the data to the display screen 15 of the control panel 7. The current value, cumulative power and power factor are displayed in real time to realize the metering function. The collection module 18 provides the installation area for the current transformer 4, so that the overall size of the reclosing switch is reduced while the metering function is still guaranteed.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A reclosing switch comprising a housing (1), characterized in that A control panel (7) is installed on the front surface of the outer shell (1), and a back plate (2) is connected to the back of the outer shell (1) by screws. An installation compartment (8) is opened on the front surface of the outer shell (1). An operating mechanism and a DC motor (3) are installed inside the installation compartment (8). An installation plate (17) is fixedly installed inside the outer shell (1) near the lower part. A collection module (18) is installed on the upper surface of the installation plate (17). A current transformer (4) is installed at the bottom of the collection module (18). The operating mechanism includes a trigger spring (19) and a connecting plate (14). The trigger spring (19) is fixedly installed inside the installation chamber (8), and the connecting plate (14) is rotatably connected inside the installation chamber (8) via a shaft.

2. A reclosing switch according to claim 1, characterized in that The operating mechanism also includes a movable piece (10), which is fixedly installed at the bottom of the installation chamber (8). A linkage piece two (12) is movably installed on the outer wall of the movable piece (10), and a trigger piece (9) is fixedly connected to one end of the linkage piece two (12).

3. A reclosing switch according to claim 2, c h a r a c t e r i z e d in that Linkage piece one (11) is movably installed on the outer wall of linkage piece two (12), and linkage piece one (11) and linkage piece two (12) cooperate with each other.

4. A reclosing switch according to claim 3, c h a r a c t e r i z e d in that The outer wall of the DC motor (3) is fixedly connected to a connecting piece (13), and one end of the connecting piece (13) is connected to the outer wall of the connecting plate (14).

5. A circuit breaker according to any one of claims 1 to 4, characterized in that The outer shell (1) is provided with a number of arc extinguishing mechanisms (5) and triggering mechanisms (6), and the arc extinguishing mechanisms (5) and triggering mechanisms (6) cooperate with each other. The inner wall of the outer shell (1) and near the upper and lower ends are provided with a number of mounting holes (20).

6. A reclosing switch according to claim 5, characterized in that The front surface of the outer casing (1) is equipped with a control panel (7), and the outer wall of the control panel (7) is equipped with a display screen (15) and several control buttons (16).

Images