CN210866024U - Indoor direct current grounding switch - Google Patents

Abstract

An indoor direct current fast grounding switch comprises a shell, a wiring terminal, an electric control module, a signal output module, an operating mechanism, a manual operation module, an electric operation module and a static contact, wherein the wiring terminal, the electric control module, the signal output module, the operating mechanism, the manual operation module and the static contact are arranged in the shell; the rear cavity is internally provided with a static contact and a dynamic contact which are divided into four copper bars which are symmetrically arranged in an upper row and a lower row and extend out of the rear wall of the shell, one of the two upper row copper bars is connected with the negative electrode of the direct current power supply system and the other is grounded PE, and the two lower row copper bars are provided with mechanical connection common action and are also electrically connected through interphase short-circuit copper bars; in the front cavity, a wiring terminal module is arranged at the top, an electric control and signal output module is distributed in the middle in parallel, and an operating mechanism, a manual operation module and an electric operation module are distributed below the wiring terminal module; the operating mechanism module is connected with a manual operation module, an electric operation module, a signal output module and an electric control module respectively besides controlling the two moving contacts, and the electric operation module is also connected with a terminal module. The utility model discloses closed and compact structure volume is less still dependable performance.

Description

Indoor direct current grounding switch

Technical Field

The utility model relates to a switch especially relates to an indoor direct current earthing switch.

Background

The existing grounding switch generally comprises a shell, a terminal module, an electric control module, a signal output module, an operating mechanism module, a manual operating module, an electric operating module and a static contact and a dynamic contact.

At present, the domestic grounding switch is mostly similar to the grounding switch in a high-voltage switch cabinet, the size is large, and the structure is open. The Italian COET company has a whole set of direct current cabinet solution, the closing time of an MAT grounding switch is less than 80ms, the mechanical life is 20000 times, the short-time withstand current is maximum 100kA, the rated working voltage DC 3000V is higher than the domestic direct current system voltage DC 1500V. But also leads to larger product volume and higher cost, and can not meet the requirements of domestic small cabinets and product price economy.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that an indoor direct current ground switch that closed and compact structure volume is less still dependable performance is provided.

In order to solve the technical problem, the utility model adopts the following technical scheme:

an indoor direct current grounding switch, the grounding switch comprises a shell and a terminal module, an electric control module, a signal output module, an operating mechanism module, a manual operating module, an electric operating module and a static contact and dynamic contact (or called as a contact system) which are arranged in the shell, and is characterized in that: the static contact and the dynamic contact are divided into two wiring copper bars which are respectively four in total, the four wiring copper bars are symmetrically arranged in an upper row and a lower row and extend out of the rear wall of the shell, wherein the two upper rows of wiring copper bars are connected with the negative electrode of the direct current power supply system and the other grounding PE, and a mechanical connection common action is arranged between the two corresponding lower rows of wiring copper bars and is also electrically connected through an interphase short circuit copper bar 3.

The inner cavity of the shell is divided into a front cavity and a rear cavity by a vertical plate; the four copper bar main circuit wiring copper bars A201, the main circuit wiring copper bar B202, the main circuit wiring copper bar C203 and the main circuit wiring copper bar D204 are symmetrically arranged in an upper row and a lower row and extend out of the rear wall of the shell; in the front cavity, the top of the front cavity is provided with a terminal module, the top of the front cavity partially extends out of the shell, the middle of the front cavity is distributed with an electric control module and a signal output module in parallel, and the lowest part of the front cavity is distributed with an operating mechanism module, a manual operating module and an electric operating module; the operating mechanism module is connected with and controls the two moving contacts, namely a main circuit wiring copper bar B202 and a main circuit wiring copper bar D204, and is also respectively connected with the manual operating module, the electric operating module, the signal output module and the electric control module, and the electric operating module is also connected with the wiring terminal module.

The manual operation module and the electric operation module are respectively connected with the operation mechanism module to realize manual operation or automatic operation, the operation mechanism module receives signals transmitted by the signal output module through the wiring terminal module, the electric control module receives opening and closing control signals transmitted by the wiring terminal module and directly acts on the operation mechanism module, and the operation mechanism module is connected with and controls two moving contacts to jointly act.

The electric control module consists of a closing electromagnet and a shunt release, when the coil is electrified, the armature iron strikes parts of the operating mechanism, so that the state of the operating mechanism is changed, the moving contact is driven to move, and the electric opening or closing operation is completed.

Has the advantages that: the static contact module and the dynamic contact module of the utility model comprise two phases which are connected in series during actual use to form two breakpoints in a loop, so that the distance of a fracture formed by relative incoming and outgoing lines is increased in a limited volume during brake separation, and the pressure resistance is ensured; and simultaneously, the utility model discloses still have compact structure characteristics small and dependable performance, and adopt the modularization subassembly, make convenient low cost.

The utility model discloses possess and close short-circuit current and open and shut induced-current's ability for among the direct current cabinet system, when the short circuit condition appears in the circuit, can insert the underground with short-circuit current rapidly, then cut off short-circuit line by direct current breaker.

Drawings

Fig. 1 is one of perspective views of an embodiment of the present invention;

fig. 2 is a second perspective view of the embodiment of the present invention;

fig. 3a is one of the schematic structural diagrams of the inner cavity of the shell according to the embodiment of the present invention (the left side is the front side, and the right side is the back side);

fig. 3b is a schematic view of the arrangement of the front cavity inside the housing according to the embodiment of the present invention;

fig. 3c is a schematic view of the arrangement of the rear cavity inside the housing according to the embodiment of the present invention;

fig. 4 is a schematic diagram of the composition, connection relationship and operation principle of the modules according to the embodiment of the present invention.

Reference numbers in the figures: 1-shell, 102-front cavity, 102-rear cavity, 201-main loop wiring copper bar A, 202-main loop wiring copper bar B, 203-main loop wiring copper bar C, 204-main loop wiring copper bar D, 3-interphase short-circuit copper bar, 4-wiring terminal module, 5-electric control module, 6-signal output module, 7-operating mechanism module, 8-manual operating module and 9-electric operating module.

Detailed Description

The present invention will be described in further detail with reference to fig. 1 to 4 and the following examples.

As shown in fig. 1 to 4, the embodiment of the indoor dc ground switch of the present invention is shown.

The indoor direct current grounding switch comprises a shell 1 and a wiring terminal module 4, an electric control module 5, a signal output module 6, an operating mechanism module 7, a manual operating module 8, an electric operating module 9 and a static contact and a dynamic contact which are installed in the shell.

Referring to fig. 3a to 3c, the present invention is characterized in that: the inner cavity of the shell 1 is divided into a front cavity 101 and a rear cavity 102 by a vertical plate, and a static contact and a dynamic contact are installed in the rear cavity 102. The static contact and the dynamic contact are divided into four wiring copper bars, namely a main circuit wiring copper bar A201, a main circuit wiring copper bar B202, a main circuit wiring copper bar C203 and a main circuit wiring copper bar D204, which are mutually shared, and the four wiring copper bars are divided into an upper row and a lower row, namely the main circuit wiring copper bar A (201), the main circuit wiring copper bar B202, the main circuit wiring copper bar C203 and the main circuit wiring copper bar D204, which are symmetrically arranged and extend out of the rear wall of the shell. The two upper row wiring copper bar main circuit wiring copper bars A and the main circuit wiring copper bars B-static contact wiring copper bars are connected with the negative electrode of the direct current power supply system and the other grounding PE, a mechanical connection common action is arranged between the two corresponding lower row wiring copper bar main circuit wiring copper bars C203 and the main circuit wiring copper bars D204-dynamic contact wiring copper bars, and the lower ends of the two lower row wiring copper bar main circuit wiring copper bars are electrically connected through the interphase short circuit copper bars 3.

In the front cavity, the top is provided with a wiring terminal module 4, a part of the wiring terminal module extends out of the shell, the middle part of the wiring terminal module is distributed with an electric control module 5 and a signal output module 6 in parallel, and the lowest part of the wiring terminal module is distributed with an operating mechanism module 7, a manual operating module 8 and an electric operating module 9.

The operating mechanism module 7 is mechanically connected with the two moving contacts and controls the two moving contacts to act simultaneously, and is also respectively connected with the manual operating module 8, the electric operating module 9, the signal output module 6 and the electric control module 5, and the electric operating module 9 is also connected with the wiring terminal module 4.

Referring to fig. 1, more specifically, a front surface of a housing of the indoor direct current grounding switch is further provided with a man-machine operation interface, which comprises an opening button, a closing button, an opening and closing indication, an energy storage/release indication, a manual operation handle and a mechanical counter. Plug-in binding post is installed at the top, and the transport handle is all installed to the side about, and the bottom surface is by the avris to install the fixed curb plate of installation.

As shown in fig. 2, a main circuit wiring copper bar a201 and a main circuit wiring copper bar C203 of a static contact and a dynamic contact of an indoor direct-current grounding switch form a phase difference, and a main circuit wiring copper bar B202 and a main circuit wiring copper bar D204 of the static contact and the dynamic contact form a phase difference.

As shown in fig. 3a to fig. 3c, the indoor dc ground switch is schematically configured. The static contact module and the dynamic contact module comprise two phases which are connected in series in actual use, so that a loop forms two breakpoints.

As shown in fig. 4, the working principle of the indoor direct current earthing switch between the modules is schematically illustrated, and the core modules of the earthing switch are an operating mechanism module and a static and dynamic contact module. A driving shaft in the operating mechanism module drives a moving contact with a moving contact and a static contact to move, so that the opening and closing operation of the grounding switch is realized. The energy storage operation can be performed on the operating mechanism module through the manual operating module and the electric operating module. When the relevant mechanism of the operating mechanism module moves, the signal output module generates the change of the contact state. The electric control module can realize remote control of the grounding switch on-off through circuit design. The terminal module introduces an external control signal into the electric operation module and the electric control module and feeds back the contact state of the signal output module to the peripheral circuit. The switching-on and switching-off operation can be carried out through a button on a human-computer interface on the front surface of the grounding switch.

The static contact and the dynamic contact comprise two phase contacts which are connected in series in actual use, so that the loop sequentially passes through the wiring copper bar, thereby forming two break points electrically. One end 201 of the loop is grounded, and the other end 202 is connected with the negative pole of the DC power supply system.

Claims (2)

1. The indoor direct-current grounding switch comprises a shell (1), and a wiring terminal module (4), an electric control module (5), a signal output module (6), an operating mechanism module (7), a manual operating module (8), an electric operating module (9) and a static contact and a dynamic contact which are arranged in the shell, and is characterized in that: the static contact and the dynamic contact are divided into four wiring copper bars, namely a main circuit wiring copper bar A (201), a main circuit wiring copper bar B (202), a main circuit wiring copper bar C (203) and a main circuit wiring copper bar D (204), which are respectively shared, are symmetrically arranged in an upper row and a lower row and extend out of the rear wall of the shell, wherein one of the two upper rows of wiring copper bars, the main circuit wiring copper bar A (201) and the main circuit wiring copper bar B (202) is connected with the negative electrode of the direct current power supply system and the other grounding PE, and a mechanical connection common action is arranged between the two corresponding lower rows of wiring copper bars, the main circuit wiring copper bar C (203) and the main circuit wiring copper bar D (204) and is also electrically connected through an interphase short circuit copper bar (.

2. The indoor dc ground switch of claim 1, further comprising: the inner cavity of the shell (1) is divided into a front cavity (101) and a rear cavity (102) by a vertical plate; the four wiring copper bars, namely a main loop wiring copper bar A (201), a main loop wiring copper bar B (202), a main loop wiring copper bar C (203) and a main loop wiring copper bar D (204), are symmetrically arranged in an upper row and a lower row and extend out of the rear wall of the shell; in the front cavity, the top of the front cavity is provided with a terminal module (4), part of the terminal module extends out of the shell, the middle of the front cavity is distributed with an electric control module (5) and a signal output module (6) in parallel, and the lowest part of the front cavity is distributed with an operating mechanism module (7), a manual operating module (8) and an electric operating module (9); the operating mechanism module is connected with and controls the two moving contacts, and is also respectively connected with the manual operating module, the electric operating module, the signal output module and the electric control module, and the electric operating module is also connected with the terminal module.

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