CN203039280U - Switch cabinet - Google Patents

Abstract

The utility model relates to the electric device technology field and discloses a switch cabinet, comprising a drawer unit chamber, a vertical bus chamber and a wire-outlet cable chamber successively arranged from front to back. A plurality of drawer unit layers arranged along a height direction are mounted in the drawer unit chamber. Every drawer unit layer is provided with at least one drawer unit. A breaker is disposed in every drawer unit. A vertical bus electrically connected with the breaker of the drawer unit is arranged in the vertical bus chamber. A wire-outlet terminal stud and a base for every drawer unit is mounted in the wire-outlet cable chamber. The wire-outlet terminal stud is electrically connected with the corresponding breaker. The base is respectively and electrically connected with the vertical bus and the wire-outlet terminal stud and can be electrically connected with a standby switch apparatus. According to the technology scheme, the breaker in the switch cabinet can be replaced and maintained under an uninterruptable power premise, so that a continuous operation performance of a distribution system is guaranteed and users' device replacement and maintenance cost is greatly reduced.

Description

a switch cabinet

technical field

The utility model relates to the technical field of electrical equipment, in particular to a switch cabinet.

Background technique

In the drawer type switchgear, the circuit breaker is usually arranged in the drawer unit. As a switchgear for the primary distribution of electric energy, the reliability of the circuit breaker directly affects the safe and reliable operation of the power distribution system. In the prior art, when a circuit breaker of a certain drawer unit in an operating switch cabinet is damaged, it is necessary to stop all electrical equipment controlled by the circuit breaker, and then replace and maintain the circuit breaker.

The defect of the existing technology is that the replacement and maintenance of the circuit breaker need to be carried out under the condition that the relevant electrical equipment stops running, which will bring great losses to the user, especially in telecommunications, mobile communications, etc., where power failure is not allowed. In some application places, replacing the circuit breaker in a power failure will cause immeasurable losses.

Utility model content

The purpose of this utility model is to provide a switchgear to realize the replacement or maintenance of the circuit breaker in the switchgear without interruption, to ensure the continuous workability of the power distribution system, and to reduce the user's equipment replacement and maintenance costs.

The switchgear of the utility model comprises: a drawer unit room, a vertical busbar room and an outlet cable room arranged sequentially from front to back, wherein,

The inside of the drawer unit chamber is provided with a plurality of drawer unit layers arranged along the height direction, each drawer unit layer is provided with at least one drawer unit, and each drawer unit is provided with a circuit breaker;

A vertical bus electrically connected to the circuit breaker of the drawer unit is arranged inside the vertical bus chamber;

The interior of the outlet cable chamber is provided with an outlet terminal and a base for each drawer unit, the outlet terminal is electrically connected to the corresponding circuit breaker, and the base is electrically connected to the vertical bus bar and the outlet terminal respectively , and can be electrically connected to the standby switchgear.

Preferably, each drawer unit is further provided with a first plug connector, one end of the first plug connector is electrically connected to the circuit breaker, and the other end extends into the vertical busbar chamber and has a first plug slot, and the vertical busbar One side is plugged into the first slot.

Preferably, for each drawer unit, the inside of the vertical busbar chamber is also provided with a second connector and a transfer bar, the transfer row is electrically connected to the base, and one end of the second connector is passed through a fastener It is fixedly connected with the transfer bar, and the other end has a second insertion slot, and the other side of the vertical busbar is inserted into the second insertion slot.

Optionally, for each drawer unit, an adapter bar electrically connected to the base is also provided inside the vertical busbar chamber, and the other side of the vertical busbar is fixedly connected to the adapter bar through fasteners.

Preferably, when the backup switch device is a backup circuit breaker, the base has sockets that are plugged in correspondingly to the plug terminals of the backup circuit breaker.

Optionally, when the backup switch device is a fuse, the base has a connecting bus bar correspondingly connected to the connecting sub-bar of the fuse.

Preferably, the interior of the outlet cable chamber is also provided with a control wire terminal.

Preferably, the inside of the vertical busbar chamber is further provided with busbar clamps clamped on both sides of the vertical busbar.

Optionally, the phases of the circuit breaker, the vertical bus and the base correspond to at least two phases.

Preferably, the circuit breaker, the vertical busbar and the base are all three-phase.

In the technical scheme of the utility model, since the outlet cable room is provided with a base for each drawer unit, the base is electrically connected to the vertical busbar and the outlet terminal, and can be electrically connected to the spare switch device. When replacing or maintaining the circuit breaker in a drawer unit, you only need to connect the spare switch device to the corresponding base and close the switch, so that the spare switch device can replace the circuit breaker in the drawer unit to work, and then the drawer unit can be Pull it out, and perform relevant replacement and maintenance operations on the circuit breaker. This technical solution can replace and maintain the circuit breaker in the switch cabinet under the premise of uninterrupted power supply, thus ensuring the continuous workability of the power distribution system and greatly reducing the user's equipment replacement and maintenance costs.

Description of drawings

Fig. 1 is the front view of the switchgear of the utility model embodiment;

Fig. 2 is the left view of the internal structure of the switchgear of the utility model embodiment;

Fig. 3 is the rear view of the internal structure of the switchgear of the utility model embodiment;

Fig. 4 is the A-A direction sectional view of Fig. 2;

Fig. 4a is the B-B direction sectional view of Fig. 2;

Fig. 4b is a schematic diagram after the embodiment of Fig. 4a is connected to the standby switch device;

Fig. 5 is a three-dimensional view of the internal structure of the switchgear according to the embodiment of the present invention;

Fig. 6 is a cross-sectional top view of a switch cabinet according to another embodiment of the present invention.

Reference signs:

10-drawer unit room 11-vertical busbar room 12-outlet cable room

13-drawer unit 14-circuit breaker 15-vertical busbar

16-base 17-first connector 18-first socket

19-Second connector 20-Transfer row 21-Second socket

22-socket 23-outlet terminal 24-control line terminal

25-bus clamp 26-rear door panel 27-spare switch device

28-Connect copper bar

Detailed ways

In order to ensure the continuous workability of the power distribution system and reduce equipment replacement and maintenance costs for users, the embodiment of the utility model provides a switchgear. In the technical scheme of the utility model, a base for each drawer unit is provided inside the outlet cable room, and the base is electrically connected to the vertical busbar and the outlet terminal, and can be electrically connected to the spare switch device. When the circuit breaker in a drawer unit is replaced or maintained, it is only necessary to connect the spare switch device to the corresponding base and close the switch. In order to make the purpose, technical solutions and advantages of the utility model clearer, the following examples are given to further describe the utility model in detail.

In the drawings of the description, Fig. 1 is a front view of the switchgear of the embodiment of the utility model; Fig. 2 is a left view of the internal structure of the switchgear of the embodiment of the utility model; Fig. 3 is a rear view of the internal structure of the switchgear of the embodiment of the utility model Views; Figure 4 is a cross-sectional view of A-A in Figure 2; Figure 4a is a cross-sectional view of B-B in Figure 2; Figure 4b is a schematic diagram of the embodiment of Figure 4a after accessing the standby switch device; Figure 5 is a switch of an embodiment of the present invention A three-dimensional view of the internal structure of the cabinet; Figure 6 is a cross-sectional top view of the switch cabinet according to another embodiment of the utility model (the section is equivalent to A-A in Figure 2).

As shown in Figures 1 to 4, and Figures 4a and 4b, the switchgear of the embodiment of the present invention includes: a drawer unit room 10, a vertical bus bar room 11 and an outgoing cable room 12 arranged in sequence from front to back, wherein,

The inside of the drawer unit chamber 10 is provided with a plurality of drawer unit layers arranged along the height direction, each drawer unit layer is provided with at least one drawer unit 13, and each drawer unit 13 is provided with a circuit breaker 14 inside;

The vertical busbar 15 electrically connected to the circuit breaker 14 of the drawer unit 13 is arranged inside the vertical busbar chamber 11;

The interior of the outlet cable chamber 12 is provided with an outlet terminal 23 and a base 16 for each drawer unit 13, the outlet terminal 23 is electrically connected to the corresponding circuit breaker 14, and the base 16 is electrically connected to the vertical bus bar 15 and the outlet terminal 23 respectively. connected, and can be electrically connected to the spare switch device 27 (please refer to FIG. 4 b for the schematic diagram after accessing the spare switch device).

In the embodiment of the utility model, the "front" refers to the side that the operator usually faces when operating the switch cabinet, and the "rear" refers to the side opposite to the "front", the rear side of the cabinet Usually, a rear door panel 26 is arranged, and when the rear door panel 26 is opened, it faces the outlet cable chamber 12 . The drawer unit layer and the specific number of drawer units 13 provided on each drawer unit layer are not limited, and need to be arranged according to the power distribution parameters of the switchgear. As shown in Figure 4, the drawer unit layer is provided with two drawers side by side Unit 13, as shown in FIG. 4a, the drawer unit layer is provided with a drawer unit 13. The switch cabinet is a drawer-type switch cabinet, and the specific type is not limited, for example, it may be a low-voltage drawer-type switch cabinet.

Referring to Fig. 4b, when the circuit breaker 14 inside the drawer unit 13 is working normally, the current input to the vertical bus 15 enters the circuit breaker 14, and then is output to the outlet terminal 23 through the transfer row; and when the standby switch device 27 works At this time (the circuit breaker 14 is equivalent to the disconnected state), the current input to the vertical bus bar 15 enters the base 16, and then enters the standby switch device 27, and then is output by connecting the copper bar 28 to the outlet terminal 23. When the circuit breaker 14 is working normally, the backup switch device 27 is inserted, which is equivalent to the backup switch device 27 being connected in parallel with the circuit breaker 14 .

In the technical solution of the present utility model, since the outlet cable chamber 12 is provided with a base 16 for each drawer unit 13, the base 16 is electrically connected to the vertical bus bar 15 and the outlet terminal 23 respectively, and can be connected to the standby switch The device 27 is electrically connected. When the circuit breaker 14 in a certain drawer unit 13 needs to be replaced or maintained, it is only necessary to connect the spare switch device 27 to the corresponding base 16 and close the switch, so that the spare switch device 27 can replace the drawer unit 13 The circuit breaker 14 in the circuit breaker is working, and at this moment, the drawer unit 13 can be drawn out, and the circuit breaker 14 can be replaced and maintained. This technical solution can replace and maintain the circuit breaker 14 in the switch cabinet without power interruption, thus ensuring the continuous workability of the power distribution system and greatly reducing the user's equipment replacement and maintenance costs.

As shown in Figure 4, each drawer unit 13 is provided with a first plug connector 17, one end of the first plug connector 17 is electrically connected to the circuit breaker 14, and the other end extends into the vertical bus chamber 11 and has a first Inserting slot 18 , one side of the vertical busbar 15 is inserted into the first inserting slot 18 . The installation of the first plug connector 17 can facilitate the installation and disassembly of the electrical connection between the vertical bus bar 15 and the circuit breaker 14 .

As shown in Figure 4 and Figure 5, further, for each drawer unit 13, the inside of the vertical bus chamber 11 is also provided with a second plug connector 19 and an adapter row 20, the adapter row 20 and the base 16 For electrical connection, one end of the second connector 19 is fixedly connected to the transfer bar 20 through a fastener, and the other end has a second socket slot 21, and the other side of the vertical bus bar 15 is plugged into the second into the slot 21. Providing the second socket 19 and the adapter bar 20 on the basis of the first socket 17 can further facilitate the installation and disassembly of the electrical connection between the vertical bus bar 15 and the base 16 . In addition, the vertical busbar 15 and the first plug connector 17 and the second plug connector 19 are all slot-type plug-in connections, and do not need to be connected by fasteners. Limited to the number of drawer units 13 and the size of the circuit breaker 14, it has strong versatility and greatly saves the cost of equipment.

As shown in Fig. 6, as an alternative embodiment, for each drawer unit 13, the interior of the vertical bus bar chamber 11 is provided with an adapter bar 20 electrically connected to the base 16, and the other side of the vertical bus bar 15 is fastened The component is fixedly connected with the adapter row 20. The vertical busbar 15 is fixedly connected to the adapter bar 20 through fasteners, and can also be electrically connected to the base 16. However, compared with the embodiment shown in FIG. 4, the vertical busbar 15 in the embodiment shown in FIG. 4 has higher versatility.

The type of the backup switch device 27 is not limited, for example, it may be a circuit breaker or a fuse. Limited to the specific structure of the spare switch device 27, the structure of the base 16 should also be adapted thereto. For example, as shown in Figure 3 and Figure 4a, when the backup switch device 27 is a backup circuit breaker, the base 16 has a socket 22 correspondingly plugged into the plug terminal of the backup circuit breaker. When the circuit breaker 14 in the unit 13 is replaced or maintained, it is only necessary to plug the plug terminals of the spare circuit breaker into the socket 22 correspondingly. In other embodiments of the present utility model, when the backup switch device is a fuse, the base has a wiring bus bar correspondingly connected to the wiring sub-bar of the fuse. The use of a circuit breaker for the backup switching device has higher safety, because the plugging of the plug-in terminal and the socket 22 is easier to operate than the corresponding connection between the wiring sub-bar and the wiring busbar, and the area of the live exposed part is small, so it is preferred A circuit breaker is used as a backup switching device.

The vertical busbar 15, transfer bar 20, wiring sub-bar, wiring busbar, etc. mentioned in the above embodiments are all preferably copper bars, because copper has good electrical conductivity and corrosion resistance, and can better ensure electrical connection. reliability. In each embodiment of the present invention, the connection mode between the base 16 and the outlet terminal 23 is not limited, as long as the electrical connection can be realized, as shown in Figure 4a, in this embodiment, the base 16 and the outlet terminal 23 Connect through connecting copper bar 28.

Please continue to refer to FIG. 3 , the outlet cable compartment 12 is further provided with a control line terminal 24 . The control line terminal 24 is used for docking with the plug-in cables of the control indicator light, etc., and the control line terminal 24 is arranged inside the outlet cable chamber 12, which is convenient for the operator to perform related operations.

As shown in FIG. 2 and FIG. 5 , the inside of the vertical busbar chamber 11 is further provided with busbar clamps 25 clamped on both sides of the vertical busbar 15 . The busbar clamp 25 clamps and positions the vertical busbar 15 from both sides of the vertical busbar 15, so that the vertical busbar 15 is fixed more firmly and is more convenient to disassemble.

In the technical solution of the utility model, the phases of the circuit breaker 14, the vertical bus 15 and the base 16 correspond to at least two phases. In the embodiments shown in FIGS. 1 to 6 , the circuit breaker 14 , the vertical bus bar 15 and the base 16 are all three-phase. In addition, in other embodiments of the present invention, two phases or four phases can also be used.

Obviously, those skilled in the art can make various changes and modifications to the utility model without departing from the spirit and scope of the utility model. In this way, if these modifications and variations of the utility model fall within the scope of the claims of the utility model and equivalent technologies thereof, the utility model is also intended to include these modifications and variations.

Claims (10)

1. A switch cabinet, characterized in that it includes: a drawer unit room (10), a vertical bus bar room (11) and an outgoing cable room (12) arranged in sequence from front to back, wherein, The drawer unit chamber (10) is provided with a plurality of drawer unit layers arranged along the height direction, each drawer unit layer is provided with at least one drawer unit (13), and each drawer unit (13) is provided with a circuit breaker ( 14); The vertical busbar (15) electrically connected to the circuit breaker (14) of the drawer unit (13) is arranged inside the vertical busbar chamber (11); The outlet cable compartment (12) is provided with an outlet terminal (23) and a base (16) for each drawer unit (13), and the outlet terminal (23) is electrically connected to the corresponding circuit breaker (14). connection, the base (16) is electrically connected to the vertical busbar (15) and the outlet terminal (23) respectively, and can be electrically connected to the standby switchgear (27). 2. The switchgear according to claim 1, characterized in that, each drawer unit (13) is further provided with a first connector (17), one end of the first connector (17) is connected to the circuit breaker (14) Electrical connection, the other end extends into the vertical busbar chamber (11) and has a first slot (18), one side of the vertical busbar (15) is plugged into the first slot (18) )Inside. 3. The switchgear according to claim 2, characterized in that, for each drawer unit (13), a second connector (19) and a transfer bar ( 20), the transfer bar (20) is electrically connected to the base (16), one end of the second plug connector (19) is fixedly connected to the transfer bar (20) through a fastener, and the other end has a second plug The other side of the vertical busbar (15) is inserted into the second insertion slot (21). 4. The switchgear according to claim 2, characterized in that, for each drawer unit (13), an adapter bar (20) electrically connected to the base (16) is provided inside the vertical busbar chamber (11) ), and the other side of the vertical busbar (15) is fixedly connected to the transfer bar (20) through fasteners. 5. The switchgear according to claim 1, characterized in that, when the backup switch device (27) is a backup circuit breaker, the base (16) has a plug corresponding to the plug-in terminal of the backup circuit breaker Socket (22). 6 . The switchgear according to claim 1 , wherein when the spare switch device is a fuse, the base has a wiring busbar correspondingly connected to the wiring sub-bar of the fuse. 6 . 7. The switchgear according to any one of claims 1 to 6, characterized in that, a control line terminal (24) is also arranged inside the outlet cable chamber (12). 8. The switchgear according to claim 7, characterized in that, the inside of the vertical busbar chamber (11) is also provided with busbar clamps (25) clamped on both sides of the vertical busbar (15). 9. The switch cabinet according to claim 7, characterized in that, the phases of the circuit breaker (14), the vertical bus (15) and the base (16) correspond to at least two phases. 10. The switch cabinet according to claim 9, characterized in that, the circuit breaker (14), the vertical busbar (15) and the base (16) are all three-phase.

Images