Portable MB type trolley type DC circuit breaker operating device

Abstract

The utility model relates to the field of direct current switch equipment discloses a portable MB type handcart type direct current circuit breaker operating device, including box body shell, insulating handle, aviation plug, extension wire harness, internal operating assembly, five mutual combination uses play the role, operating device can provide operating power supply after the circuit breaker handcart exit, and can operate control to circuit breaker, and whole volume is small, light, easy to carry, interface is simple, and the subway operation and maintenance personnel can carry the handcart type circuit breaker detection for different traction substation.

Description

Technical Field

[0001] This utility model relates to the field of DC switchgear, specifically a portable MB-type handcart-type DC circuit breaker operating device. Background Technology

[0002] Currently, most DC circuit breakers in the DC traction power supply equipment of rail transit adopt the handcart type, with the control device and control circuit of the circuit breaker installed separately from the circuit breaker handcart. The advantage of this solution is that it is convenient to remove the circuit breaker handcart from the cabinet for maintenance and to replace the circuit breaker in time when a circuit breaker failure occurs. However, the inconvenience of this solution also lies in this: the operation and control of the circuit breaker depends on the control device and control circuit inside the cabinet. When the original circuit breaker handcart fails and is removed from the cabinet, it will be impossible to operate the circuit breaker and connect it for inspection and testing. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a portable MB-type handcart-type DC circuit breaker operating device to solve the aforementioned problems.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution.

[0005] A portable MB-type handcart-type DC circuit breaker operating device includes a housing, an insulated handle, an aviation plug, an extension harness, and an internal operating component. The insulated handle is fixed to the top of the housing. One end of the extension harness is connected to the aviation plug, and the other end is connected to the internal operating component. The internal operating component consists of a miniature circuit breaker, a power module, a controller, indicator lights, and a selector switch.

[0006] The miniature circuit breaker is used for power supply, disconnection, and protection;

[0007] The power module converts the external DC / AC220V power supply into the DC24V power supply required by the controller.

[0008] The controller is used to write software programs to control the opening and closing of the circuit breaker by receiving signals and issuing commands.

[0009] Preferably, the indicator light is used to display the open / closed position status of the circuit breaker.

[0010] Preferably, the changeover switch is used to send opening and closing commands to the controller.

[0011] Compared with the prior art, this utility model discloses a portable MB-type handcart-type DC circuit breaker operating device, including a housing, an insulated handle, an aviation plug, an extension harness, and internal operating components. These five components work together to function. The operating device can provide operating power after the circuit breaker handcart is withdrawn and can operate and control the circuit breaker. It is small in size, lightweight, easy to carry, and has a simple interface. Subway maintenance personnel can carry it with them for handcart-type circuit breaker testing at different traction substations. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the portable MB-type handcart DC circuit breaker operating device of this utility model;

[0013] Figure 2 This is a schematic diagram of the internal operating components of this utility model;

[0014] Figure 3 This is a schematic diagram of the input signal for the opening and closing command of this utility model;

[0015] Figure 4 This is a schematic diagram of the opening and closing command output signal of this utility model;

[0016] Figure 5 This is a schematic diagram of the open and closed states of the circuit breaker of this utility model. 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 of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0018] A portable MB-type handcart-type DC circuit breaker operating device includes a housing 1, an insulating handle 2, an aviation plug 3, an extension harness 4, and an internal operating component 5. The insulating handle 2 is fixed to the top of the housing 1. One end of the extension harness 4 is connected to the aviation plug 3, and the other end is connected to the internal operating component 5. The internal operating component 5 consists of a miniature circuit breaker 51, a power module 52, a controller 53, an indicator light 54, and a selector switch 55.

[0019] The miniature circuit breaker 51 is used for power supply, disconnection and protection;

[0020] The power module 52 converts the external DC / AC 220V power supply into the DC 24V power supply required by the controller 53.

[0021] The controller 53 is used to write software programs to control the opening and closing of the circuit breaker by receiving signals and issuing commands.

[0022] The indicator light 54 is used to display the open / closed position status of the circuit breaker.

[0023] The changeover switch 55 is used to send opening and closing commands to the controller 53.

[0024] Control principle: such as Figure 3 As shown, all electrical circuits are powered by an external DC / AC 220V 3A power supply. The power module 52 converts the external DC / AC 220V power supply into the DC 24V power supply required by the controller 53. A tripping or closing command is issued via the tripping / closing switch 55 on the gate panel, and this command signal is input to the controller 53.

[0025] like Figure 4 As shown, after the controller 53 receives the opening or closing command, it sends an adjustable pulse signal of 0.5 to 1 second through the internal logic of the software to output the opening or closing command, which is transmitted to the opening and closing contactor on the circuit breaker truck through the aviation plug 3 to realize the opening and closing control of the circuit breaker.

[0026] like Figure 5 As shown, by connecting the position status of the auxiliary switch of the circuit breaker body back to the indicator light 54 of the control device, the open and closed positions of the circuit breaker are displayed, which is used to determine whether the circuit breaker's opening and closing functions are normal and to test the mechanical performance of the circuit breaker.

[0027] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0028] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0029] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A portable MB-type handcart-type DC circuit breaker operating device, characterized in that: The device includes a housing (1), an insulated handle (2), an aviation plug (3), an extension harness (4), and an internal operating component (5). The insulated handle (2) is fixed above the housing (1). One end of the extension harness (4) is connected to the aviation plug (3), and the other end is connected to the internal operating component (5). The internal operating component (5) consists of a miniature circuit breaker (51), a power module (52), a controller (53), an indicator light (54), and a selector switch (55). The miniature circuit breaker (51) is used for power supply, disconnection and protection; The power module (52) converts the external DC / AC220V power supply into the DC24V power supply required by the controller (53); The controller (53) is used to write software programs to control the opening and closing of the circuit breaker by receiving signals and issuing commands.

2. The portable MB-type handcart-type DC circuit breaker operating device according to claim 1, characterized in that: The indicator light (54) is used to display the circuit breaker's open / closed position status.

3. The portable MB-type handcart-type DC circuit breaker operating device according to claim 1, characterized in that: The changeover switch (55) is used to send opening and closing commands to the controller (53).

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