CN204290144U - A kind of compact switch cabinet - Google Patents

Abstract

The utility model belongs to the technical field of switch cabinets, and in particular relates to a compact switch cabinet. The compact switch cabinet body includes four functional rooms and three channels, wherein the four functional rooms are respectively a cable room, a bus bar room, and a main switch. Room and low-voltage control room, the busbar room and the main switch room are provided with pressure relief channels, and the functional compartments are completely isolated by metal partitions to realize the modularization of the cabinet structure. At the same time, a series of new processes and specially designed components are adopted. The switchgear becomes a miniaturized cabinet with a width of less than 500mm. The switchgear is small in width and each functional room is modularized, so that it can be used in substations with tight land use and upgrading and transformation of substations with limited reserved space, and modular compartments The structure also facilitates installation and maintenance.

Description

A compact switch cabinet

technical field

The utility model belongs to the technical field of switch cabinets, in particular to a compact switch cabinet.

Background technique

The switch cabinet is a kind of power distribution equipment. The outside line 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 switch cabinet is also divided into different modules according to the function, equipped with main switch, bus bar, cable, lightning arrester, grounding switch, current and voltage transformers for measurement and protection, secondary components for control and protection, etc. In order to make the overall insulation performance and safety performance of the switchgear meet the requirements, the corresponding structure must be designed according to the technical characteristics of each component and the process materials of the bus cable connection, so as to ensure the miniaturization and safety without affecting the electrical safety. Modularization is used to meet the requirements of saving substation land and convenient maintenance, but the width of the switchgear in the prior art is between 800mm-1200mm, and it is rare to see a switchgear lower than 800mm.

Utility model content

The purpose of the utility model is to provide a compact switchgear, the width of which is reduced to 500mm, and each functional room is modularized, which can be used in substations with tight land use, and substations with limited reserved space for upgrading and transformation, and the modules The simplified compartment structure is also conducive to installation and maintenance.

In order to achieve the above object, a compact switch cabinet of the utility model is realized through the following technical solutions:

A compact switch cabinet body of the utility model includes four functional rooms and three channels, wherein the four functional rooms are respectively a cable room, a bus bar room, a main switch room and a low-voltage control room, and the three channels are two pressure relief rooms. channel and a cooling channel, each functional compartment is completely isolated by a metal partition, and two pressure relief channels are respectively set in the busbar room and the main switch room, which realizes the modularization of the cabinet structure, and adopts a series of new processes and specially designed Components make the switchgear a miniaturized cabinet with a width of less than 500mm.

The cable room mentioned here adopts the cable conjoined insulator to strengthen the insulation, which can reduce the volume of the switchgear accordingly.

The cable is connected to the lower contact of the main switch through the cable connecting row in the cable chamber, the cable head is connected in the connected insulator, and all joints are protected by external insulators.

The main busbar in the busbar room is a rectangular busbar or a "D" busbar. The contact surface is tinned and the insulation layer is vulcanized. According to the current carrying capacity of the switchgear, a single or double busbar can be selected and connected in parallel. The busbar joints are set There is a dedicated conjoined contact box.

The main switch in the main switch room is connected to the busbar room and the cable room respectively through the static contacts in the static contact box. The static contact boxes are integrated or separated from each other and cast with epoxy resin. The device adopts the solid-sealed pole type.

The pressure relief channel is located on the top of the switchgear and the busbar room and connected in sequence. The top of the busbar room, cable room and switchgear room are all equipped with a pressure relief plate. The air pressure generated by the fault arc will open the pressure relief plate, so that the arc is discharged into the pressure relief channel. .

The side panel of the switchgear adopts a direct single folded edge, the appearance is flat, and all assembly screws are installed inwardly.

Compared with the prior art, the utility model has the following beneficial effects:

1. The main switch room, busbar room, cable room and low-voltage room of a compact switch cabinet of the utility model are completely isolated by metal partitions, so that the maintenance and replacement of one compartment will not affect other compartments. Room, truly modularized according to function;

2. Compared with the prior art, a compact switch cabinet of the present utility model reduces the size of the whole cabinet, and the modular structure makes installation and maintenance more convenient;

3. A compact switch cabinet of the utility model adopts a series of new technology and specially designed components to achieve a miniaturized cabinet with a width of 500mm that cannot be achieved by the current general switch cabinet, and each functional compartment is modularized, which is easy to maintenance, replacement;

4. The main switch pole of a compact switch cabinet of the present utility model adopts a vacuum interrupter to directly embed epoxy resin solid material and cast it into an integral part. The vacuum interrupter is fully protected and provides maintenance-free protection for circuit breakers. conditions; therefore, the adapted switchgear can reduce the volume accordingly;

5. A compact switchgear of the present utility model is separated from other functional compartments by metal partitions, and the internal protection level can reach IP2X. If the pressure relief channel works normally, the fault will not spread to other compartments. The replacement only needs to deal with the corresponding faulty compartment.

Description of drawings

Fig. 1 is a schematic diagram of compartment distribution of a compact switch cabinet of the present invention.

Fig. 2 is a schematic diagram of the overall structure of a compact switch cabinet of the present invention.

in:

1-cable room 2-busbar room 3-main switch room 4-low voltage control room 5-pressure relief channel

6-Cooling channel 7-Conjoined insulator 8-Cable connection bar 9-Lower contact of main switch

10-Main busbar 11-Conjoined contact box 12-Static contact box 13-Circuit breaker 14-Pressure relief plate.

Detailed ways

As shown in Figure 1-2, a compact switch cabinet of the present invention includes four functional rooms and three passages, among which the four functional rooms are cable room 1, busbar room 2, main switch room 3 and low-voltage control room 4. The three channels are two pressure relief channels 5 and one cooling channel 6. Each functional compartment is completely isolated by a metal partition to realize the modularization of the cabinet structure. At the same time, a series of new processes and specially designed components are adopted. Make the switch cabinet a miniaturized cabinet with a width of less than 500mm.

Wherein said cable room adopts the cable conjoined insulator 7, strengthens the insulation, can reduce the volume of matching switchgear accordingly.

The cable is connected to the lower contact 9 of the main switch through the cable connecting row 8 in the cable chamber, and the cable head is connected in the conjoined insulator 7, and all joints are protected by external insulators.

The main busbar 10 in the busbar room is a rectangular busbar or a "D"-shaped busbar. The contact surface is tinned and the insulating layer is vulcanized. According to the current carrying capacity of the switchgear, a single or double busbar can be selected and connected together. A dedicated conjoined contact box 11 is provided.

The main switch in the main switch room is respectively connected to the busbar room and the cable room through the static contacts in the static contact box 12. The static contact boxes are integrated or separated from each other and cast with epoxy resin. The circuit breaker 13 adopts the solid-sealed pole type.

The pressure relief channel 5 is located on the top of the switch cabinet and the busbar room and connected in sequence. The top of the busbar room, the cable room and the switch cabinet room are equipped with a pressure relief plate 14. The air pressure generated by the fault arc will open the pressure relief plate, so that the arc is discharged into the discharge pressure channel.

Describe the utility model in detail below in conjunction with accompanying drawing.

Embodiment one

As shown in Figure 1-2, a compact switch cabinet of the present invention includes four functional rooms and three passages, among which the four functional rooms are cable room 1, busbar room 2, main switch room 3 and low-voltage control room 4. The three channels are two pressure relief channels 5 and one cooling channel 6. Each functional compartment is completely isolated by a metal partition to realize the modularization of the cabinet structure. At the same time, a series of new processes and specially designed components are adopted. Make the switch cabinet a miniaturized cabinet with a width of less than 500mm.

Among them, the cable room adopts the cable conjoined insulator 7 to strengthen the insulation, which can reduce the volume of the matching switch cabinet accordingly. The cable is connected with the lower contact 9 of the main switch through the cable connecting row 8 in the cable room, and the cable head is connected in the conjoined insulator 7, and all joints are protected by external insulators.

The main busbar 10 in the busbar room is a rectangular busbar, the contact surface is tin-plated and the insulating layer is vulcanized. According to the ampacity of the switchgear, double busbars can be selected and connected in parallel. The busbar joint is equipped with a special conjoined contact box 11. The main switch in the main switch room is connected to the busbar room and the cable room respectively through the static contacts in the static contact box 12. The static contact box is integrated and cast with epoxy resin. The circuit breaker 13 of the main switch is made of solid Pole seal. The pressure relief channel 5 is located on the top of the switchgear room and the busbar room and connected in sequence. The top of the busbar room, the cable room and the switchgear room are all equipped with a pressure relief plate 14. The air pressure generated by the fault arc will open the pressure relief plate, so that the arc is discharged into the pressure relief channel. .

Embodiment two

As shown in Figure 1-2, a compact switch cabinet of the present invention includes four functional rooms and three passages, among which the four functional rooms are cable room 1, busbar room 2, main switch room 3 and low-voltage control room 4. The three channels are two pressure relief channels 5 and one cooling channel 6. Each functional compartment is completely isolated by a metal partition to realize the modularization of the cabinet structure. At the same time, a series of new processes and specially designed components are adopted. Make the switch cabinet a miniaturized cabinet with a width of less than 500mm.

Among them, the cable room adopts the cable conjoined insulator 7 to strengthen the insulation, which can reduce the volume of the matching switch cabinet accordingly. The cable is connected with the lower contact 9 of the main switch through the cable connecting row 8 in the cable room, and the cable head is connected in the conjoined insulator 7, and all joints are protected by external insulators. The main busbar 10 in the busbar room is a "D" type busbar, the contact surface is tin-plated and the insulation layer is vulcanized. According to the current carrying capacity of the switchgear, a single parallel connection can be selected. There is a special conjoined contact box 11 at the busbar joint. The main switch in the main switch room is connected to the busbar room and the cable room through the static contacts in the static contact box 12. The static contact boxes are separated from each other and cast with epoxy resin. The circuit breaker 13 of the main switch is made of solid Pole seal. The pressure relief channel 5 is located on the top of the switchgear room and the busbar room and connected in sequence. The top of the busbar room, the cable room and the switchgear room are all equipped with a pressure relief plate 14. The air pressure generated by the fault arc will open the pressure relief plate, so that the arc is discharged into the pressure relief channel. .

The basic principles and main features of the present utility model and the advantages of the present utility model have been shown and described above. Those skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model The new model also has various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model.

Claims (5)

1. a compact switch cabinet, it is characterized in that: comprise four functional compartments and three passages, wherein four functional compartments are respectively cable vault, bus-bar room, main switch room and low voltage control room, three passages are two pressure release passages and a cooling duct, each function compartment is completely isolated by metal partion (metp), two pressure release passages are separately positioned on bus-bar room and main switch room, achieve cabinet body structure modularization, adopt the components and parts of a series of new technology and particular design simultaneously, switch cubicle is become be less than the miniaturized cabinet of 500mm width.

2. a kind of compact switch cabinet as claimed in claim 1; it is characterized in that: described cable vault adopts cable conjoined insulated; cable in cable vault connects row and is connected with the lower contact of main switch, and cable end is connected in disjunctor insulator, and all joints all have outer insulator to protect.

3. a kind of compact switch cabinet as claimed in claim 1, it is characterized in that: in described bus-bar room, bus adopts sulfuration insulation, and adopt conjuncted contact box, bus tie point all connects in the insulator of reinforced insulation element that have employed APG technique, main bus bar is square type or " D " type bus, zinc-plated and the sulfuration insulating barrier of contact-making surface, single or double joint type bus can be selected according to switch cubicle ampacity size and connect formation, busbar joint place is provided with special insulating cover, all installs dividing plate and sleeve pipe between the cabinet of busbar compartment.

4. a kind of compact switch cabinet as claimed in claim 1, it is characterized in that: the main switch of described main switch indoor is connected with bus-bar room, cable vault respectively by the fixed contact in fixed contact box, fixed contact box is integral type or discrete mutually, form with poured with epoxy resin, the circuit breaker of main switch adopts pole type.

5. a kind of compact switch cabinet as claimed in claim 1, is characterized in that: described pressure release passage is positioned at switch cubicle top and is connected successively; Pressure relief plate is equipped with at all high pressure cell tops, and the air pressure that fault electric arc produces can open pressure relief plate, makes electric arc enter pressure release passage.