CN205622130U - Drawer type switch cabinet - Google Patents

Abstract

A drawer-type switch cabinet, including a cabinet body, on which a plurality of switch drawers (1), a control busbar room (2), a control wire slot (3), and an outlet room (4) are arranged; each group of the outlet room (4) The three-phase outgoing lines are all provided with current transformers (5); the front panel of the switch drawer (1) is provided with an operating handle (11), a status indicator light and a multifunctional power meter (12). The utility model further optimizes the structure of the drawer switch cabinet, provides a larger space inside the drawer, and provides convenience for increasing the switch capacity under the original switch size; under the same switch capacity, the weight of the switch drawer is smaller and more It is beneficial for field staff to pull and lock the switch drawer.

Description

A drawer type switch cabinet

technical field

The utility model relates to the field of power distribution system equipment, in particular to a drawer type switch cabinet.

Background technique

The switch cabinet is a kind of electrical equipment. The outside line of the switch cabinet first enters the main control switch in the cabinet, and then enters the sub-control switch. Each branch is set according to its needs. The main function of the switchgear is to open and close, control and protect electrical equipment during the process of power generation, transmission, distribution and power conversion in the power system. The components in the switch cabinet are mainly composed of circuit breakers, disconnectors, load switches, operating mechanisms, transformers and various protection devices. Switch cabinets are mainly used in various occasions such as power plants, substations, petrochemicals, metallurgical steel rolling, light industry textiles, factories and mines, residential quarters, and high-rise buildings. There are many classification methods of switchgear. Among them, the drawer-type switchgear is made of steel plate to make a closed shell, and the electrical components of the incoming and outgoing circuit circuits are all arranged in drawers that can be drawn out to form a functional unit that can complete a certain type of power supply task.

The drawer type switchgear is usually equipped with a primary connector and a secondary connector. The primary connector mainly refers to the connector used on the primary line (ie the main line) in the power distribution cabinet, and the circuit conduction is completed through the insertion of the dynamic and static plug-in. The corresponding current is determined according to different cabinet types and circuits, and the general voltage is 380V, 660V or higher. Corresponding to the primary connector, there is a secondary connector. It is mainly used for the secondary control circuit in the power distribution cabinet. It has the same function but is used in different places. It is AC 220V, or DC 110V.

The existing drawer-type switchgear has fewer electrical components, fewer functions, or too many electrical components, resulting in a small internal storage space in the drawer, tight arrangement of electrical components, and inability to dissipate heat, and it is impossible to artificially save electricity and save energy. Energy causes great waste to our daily life, and its versatility is poor.

Chinese utility model patent 202353072U discloses a drawer-type switchgear. This kind of switchgear with an enlarged internal space of the drawer includes a cabinet body. The cabinet body is provided with multi-layered drawers. The drawer is provided with secondary plug-ins. The depth is 401mm. On the basis of the original, it is deepened by 40mm, so that the internal configuration space of the drawer is increased, and more structural parts can be configured, which better solves the effective use of space for the components in the drawer. There are 13 pairs of secondary line interfaces on the secondary plug-in. The secondary line is changed from the original 8 pairs of 16 lines to 13 pairs of 26 lines. There is no need for non-standard parts, and all standard parts can be used. This switchgear solves the problem of effective use of space for the components in the drawer, but since the on-site operators need to frequently pull and lock the switch drawer, and the position of the upper switch drawer is relatively high, the depth of the switch drawer of the drawer-type switchgear increases. The shape and weight increase, the pulling operation is inconvenient, and the on-site operation is difficult.

Utility model content

In view of this, the purpose of this utility model is to provide a drawer-type switchgear for the deficiencies of the prior art, which increases the space in the switch drawer and reduces the weight of the switch drawer.

In order to achieve the above purpose, the utility model adopts the following technical solutions: a drawer type switch cabinet, including a cabinet body, a plurality of switch drawers, a control bus room, a control wire slot, and an outlet room are arranged on the cabinet body; The three-phase outgoing lines of the group are all provided with current transformers; the front panel of the switch drawer is provided with operating handles, status indicator lights and multifunctional electric meters.

The status indicator light and the multifunctional power meter are clamped on the front panel of the switch drawer.

The multifunctional power meter is connected to the control line module on the rear panel by using a plug-in terminal block and a control line harness.

The status indicator light includes a closing indicator light, a fault indicator light and an opening indicator light.

The status indicator light includes a light-emitting unit composed of three groups of LED light-emitting components.

As a further improvement of the utility model, the multifunctional power meter and status indicator light are clamped on the front panel of the switch drawer.

As a further improvement of the utility model, the multifunctional power meter is connected to the control line module on the rear panel by using a plug-in terminal block and a control harness.

As a further improvement of the utility model, the status indicator light includes a light-emitting unit composed of three groups of LED light-emitting components, which display closing, fault and opening information according to different colors.

As a further improvement of the utility model, there are two three-phase outgoing current transformers in each group in the outgoing room.

The beneficial effects of the utility model are:

The utility model further optimizes the structure of the drawer switch cabinet by arranging the current transformer on the outgoing line indoor cabinet, provides a larger space for installing the switch module inside the switch drawer, and increases the switch capacity under the original switch size. Provides convenience; under the same switch capacity, the weight of the switch drawer is smaller, which is more conducive to the on-site staff to pull and lock the switch drawer.

The multi-functional power meter and the status display lamp use the clamping method and the plug-in terminal block, which is more conducive to the removal of the multi-function power meter and the status display lamp, and the accessories can be replaced more quickly.

There are 3 status indicator lights, including closing indicator light, fault indicator light and opening indicator light. According to the three indicators of different colors, the working status of the switch drawer can be displayed more intuitively, and the fault indicator can display the position of the fault trip switch drawer, so that the staff can judge the scope of the fault more conveniently and save time for accident handling;

There is one status indicator light, including a unit composed of 3 LED light-emitting components, which can display closing, fault, and opening information according to different colors, reducing two indicator lights, which can further optimize the structure of the switch drawer and save the internal space of the switch drawer ;

There are three current transformers for each group of three-phase outlets on the cabinet body of the outlet room, which can more accurately obtain the magnitude of the three-phase current, and the instrument display and measurement are more accurate;

There are two current transformers for each group of three-phase outlets on the cabinet body of the outlet room, and the Vv connection method can save one current transformer without affecting normal use, which not only saves installation costs. It also reduces the number of failure points and increases the reliability of the switchgear.

Description of drawings

Fig. 1 is a schematic front view of the drawer-type switchgear of Embodiment 1.

Fig. 2 is a schematic left view of the drawer-type switchgear of the first embodiment.

FIG. 3 is a schematic top view of the drawer-type switchgear in Embodiment 1. FIG.

FIG. 4 is a schematic front view of the front panel of Embodiment 1. FIG.

FIG. 5 is a schematic front view of the front panel of Embodiment 2. FIG.

detailed description

Below in conjunction with accompanying drawing and embodiment the utility model is described further.

Example 1

As shown in Figures 1, 2 and 3, a drawer-type switch cabinet includes a cabinet body on which a plurality of switch drawers 1, a control busbar room 2, a control wire slot 3, an outlet room 4, and a power busbar room, Inlet room, outlet room, frame, shell; side panels are installed on both sides of the cabinet according to actual needs, and the rear cabinet door is set on the cabinet surface, which is hinged on the cabinet body; the control bus room is located on the top of the cabinet, and copper rods are used as wires.

As shown in Figure 4, the front panel of the switch drawer 1 is provided with an operating handle 11, a status indicator light and a multifunctional power meter 12; The back panel is connected and communicated with the cabinet through the incoming line plug-in, outgoing line plug-in, and control line plug-in.

By operating the operating handle 11, the locking, pulling out, loading, closing and opening operations can be completed; the status indicator lights can light up the closing indicator light 13 and the opening indicator light 15 respectively according to the position of the operating handle and the switch state, and the emergency When tripping, light the fault indicator light 14;

The multifunctional power meter 12 is a multifunctional smart meter with programmable measurement, display, digital communication and power pulse transmission output, which can complete power measurement, power metering, data display, collection and transmission. The measurement accuracy is 0.5 level, realize LED on-site display and remote RS-485 digital interface communication, and use communication protocol to upload data to the background for storage in real time.

There are three current transformers 5 for each group of three-phase outgoing lines on the cabinet body of the outlet room. The signals of the current transformers 5 are collected to the control line plug-in of the cabinet through back suction, and are connected to the multi-function power meter 12 through the control harness in the drawer; the control line plug-in The control line in the control line slot in the cabinet is connected to the small busbar room on the top of the cabinet, which is mainly used to collect the voltage signal of the incoming line cabinet and communicate with the multifunctional power meters of each switch drawer.

Example 2

This embodiment is an improvement to Embodiment 1, and its distinguishing technical feature is that the status indicator light includes a light-emitting unit 16 composed of three groups of LED light-emitting components, which are displayed by the control module in different colors, green for "opening" status, yellow for "Fault" state, red for "closing" state, reduces the number of indicator lights in the switch drawer, reduces the occupied position of the indicator light components, and provides a larger installation space for the switch module.

The status indicator light and the multifunctional power meter 12 are clamped on the front panel of the switch drawer, and the status indicator light and the multifunctional power meter 12 are connected with the control line module on the back panel using a plug-in terminal block. Quick disassembly and assembly speed up the replacement speed of the parts and reduce the maintenance time.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model without limitation, other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solution of the utility model, as long as they do not depart from the technical solution of the utility model The spirit and scope should be included in the claims of the present utility model.

Claims (5)

1. a drawer-type switch cabinet, including cabinet, cabinet arranges multiple switch drawer (1), control bus room (2), control wire casing (3), outlet room (4)；It is characterized in that: the respectively group three-phase outlet of described outlet room (4) is provided with current transformer (5)；The front panel of described switch drawer (1) is provided with operation handle (11), status indicator lamp and multifunctional electric meter (12).

A kind of drawer-type switch cabinet the most according to claim 1, it is characterised in that: described status indicator lamp and multifunctional electric meter (12) are connected to switch in drawer front panel.

A kind of drawer-type switch cabinet the most according to claim 1 and 2, it is characterised in that: described multifunctional electric meter (12) plug formula terminal block coordinates control wire harness to be connected with the control line module of postnotum.

A kind of drawer-type switch cabinet the most according to claim 1 and 2, it is characterised in that: described status indicator lamp includes combined floodgate display lamp (13), malfunction indicator lamp (14) and separating brake display lamp (15).

A kind of drawer-type switch cabinet the most according to claim 1 and 2, it is characterised in that: described status indicator lamp includes the luminescence unit (16) of three groups of LED emitting components compositions.