CN204230732U - A kind of armored central enclosed AC metal switch apparatus - Google Patents

Abstract

An armored center-mounted AC metal-enclosed switchgear belongs to the technical field of power distribution equipment, and in particular relates to an armored center-mounted AC metal-enclosed switchgear. The utility model aims at the above problems and provides a convenient and reliable armored middle-mounted AC metal-enclosed switchgear. The utility model includes a cabinet body, and its structural points are divided into an instrument room, a circuit breaker handcart room, a main bus room and a cable room through a partition. The front middle part of the cabinet body, the main busbar room is set at the rear middle upper part of the cabinet body, and the cable room is set at the rear lower part of the cabinet body; guide rails are arranged on both sides of the lower end of the circuit breaker handcart room, and circuit breaker handcarts are arranged on the guide rails. The upper end of the circuit breaker handcart room is provided with a secondary socket, which is connected to the secondary components in the instrument room, and the front end of the cabinet is provided with a circuit breaker handcart handle.

Description

An armored mid-mounted AC metal-enclosed switchgear

technical field

The utility model belongs to the technical field of power distribution equipment, in particular to an armored middle-mounted AC metal-enclosed switchgear.

Background technique

Armored mid-mounted AC metal-enclosed switchgear is suitable for three-phase AC 50HZ indoor power systems with a rated voltage below 40.5KV. It is used for receiving and distributing electric energy in power plants, substations and power distribution rooms of industrial and mining enterprises, and has a certain impact on the circuit. Control, protection and monitoring functions. In addition to being widely used in general power systems, switchgear can also be used in power systems with frequent operations. At present, the armored mid-mounted AC metal-enclosed switchgear on the market has poor heat dissipation effect, unsafe pressure relief, cables connected to the front, unsuitable for maintenance at the rear, small cable room, and poor maintenance performance.

Contents of the invention

The utility model aims at the above problems and provides a convenient and reliable armored middle-mounted AC metal-enclosed switchgear.

In order to achieve the above object, the utility model adopts the following technical scheme. The utility model includes a cabinet body. The cabinet body is divided into an instrument room, a circuit breaker handcart room, a main busbar room and a cable room through a partition in the main points of the structure. The instrument room is arranged in The front upper part of the cabinet body, the circuit breaker handcart room is in the front middle part of the cabinet body, the main busbar room is set in the rear middle upper part of the cabinet body, and the cable room is set in the rear lower part of the cabinet body; the two sides of the lower end of the circuit breaker handcart room There are guide rails, and a circuit breaker handcart is arranged on the guide rail. The upper end of the circuit breaker handcart room is provided with a secondary socket, which is connected with the secondary components in the instrument room. The front end of the cabinet is provided with a circuit breaker handcart handle.

The main busbar chamber is provided with a wall bushing and a contact box, and the wall bushing is provided with a main busbar and a high-voltage busbar clamp. The high-voltage busbar clamp is connected with the insulator on the side wall of the main busbar room, and the main busbar passes through the first branch busbar. Connected with the static contact in the contact box, the rear end of the circuit breaker handcart is provided with a first moving contact corresponding to the static contact, and the second moving contact at the rear end of the circuit breaker handcart passes through the second branch bus It is connected with the current transformer at the lower end of the main busbar room.

The cable room is equipped with a grounding switch, lightning arrester, zero-sequence transformer, and cable clamp. The switch is connected with the arrester, the zero-sequence transformer is connected with one end of the cable through the cable clamp, and the other end of the cable is connected with the second branch busbar.

As a preferred solution, the upper ends of the circuit breaker handcart chamber and the main busbar chamber of the utility model are provided with pressure relief plates.

As another preferred solution, the bottom of the circuit breaker handcart chamber of the utility model is provided with a grounding switch interlocking mechanism, the grounding switch interlocking mechanism includes a switch limiting baffle, the baffle is arranged at the front end of the guide rail, and the circuit breaker hand behind the guide rail There is a valve mechanism on the back panel of the compartment; an interlocking tongue is provided in the middle of the guide rail corresponding to the movement track of the handcart of the circuit breaker. The interlocking tongue is linked with the baffle plate, and the grounding switch is interlocked with the front and rear cabinet doors of the cabinet.

As another preferred solution, both the cabinet body and the partition plate of the utility model are provided with heat dissipation passages, and the heat dissipation passages communicate with the heat dissipation windows of the cabinet body.

Secondly, the bottom of the rear cabinet door described in the utility model is provided with an observation window.

In addition, the cabinet body of the utility model adopts aluminum-zinc coated boards, and the partitions adopt metal partitions.

The utility model has beneficial effects.

The main busbar room of the utility model is separated by the wall-piercing sleeve and the contact box, which prevents accidents occurring in one interval from affecting other parts.

The cable room of the utility model is arranged at the rear lower part of the cabinet body, which is convenient for the maintenance of the equipment in the cable room.

The grounding switch in the cable room of the utility model is arranged at the front upper end of the cable room, so that the space of the cable room is enlarged; and the utility model has good maintenance performance.

The utility model has the advantages of simple structure, convenient and reliable use, high safety and strong practicability.

Description of drawings

The utility model will be further described below in conjunction with the accompanying drawings and specific embodiments. The scope of protection of the utility model is not limited to the expression of the following content.

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a front view of the utility model.

Fig. 3 is a structural schematic diagram of related components of the grounding switch interlock mechanism of the present invention.

Fig. 4 is a structural schematic diagram of the connection between the circuit breaker handcart and the contact box of the utility model.

In the figure, cabinet 1, partition 2, circuit breaker handcart room 3, instrument room 4, main busbar room 5, cable room 6, pressure relief plate 7, guide rails 8, 9, circuit breaker handcart 10, secondary socket 11 , grounding switch interlock mechanism 12, valve mechanism 13, grounding switch 14, cabinet doors 15, 16, wall bushing 17, main busbar 23, branch busbar 22, current transformer 21, contact box 20 and a static contact 24, observation window 26, baffle plate 27, interlocking tongue 28.

Detailed ways

As shown in the figure, the utility model includes a cabinet, and its structural points are divided into an instrument room, a circuit breaker handcart room, a main bus room and a cable room through a partition. The instrument room is arranged at the front upper part of the cabinet. The handcart room is in the front middle part of the cabinet body, the main busbar room is set in the rear middle upper part of the cabinet body, and the cable room is set in the rear lower part of the cabinet body; guide rails are arranged on both sides of the lower end of the circuit breaker handcart room, and the guide rails are provided with Circuit breaker handcart, the upper end of the circuit breaker handcart room is provided with a secondary socket, the secondary socket is connected to the secondary component in the instrument room, and the front end of the cabinet is provided with a circuit breaker handcart handle.

The main busbar chamber is provided with a wall bushing and a contact box, and the wall bushing is provided with a main busbar and a high-voltage busbar clamp. The high-voltage busbar clamp is connected with the insulator on the side wall of the main busbar room, and the main busbar passes through the first branch busbar. Connected with the static contact in the contact box, the rear end of the circuit breaker handcart is provided with a first moving contact corresponding to the static contact, and the second moving contact at the rear end of the circuit breaker handcart passes through the second branch bus It is connected with the current transformer at the lower end of the main busbar room.

The cable room is equipped with a grounding switch, lightning arrester, zero-sequence transformer, and cable clamp. The switch is connected with the arrester, the zero-sequence transformer is connected with one end of the cable through the cable clamp, and the other end of the cable is connected with the second branch busbar.

The upper ends of the circuit breaker handcart room and the main busbar room are both provided with a pressure relief plate. The pressure relief plate is set to ensure that the arc will not affect the adjacent compartments when an internal fault occurs, ensuring the personal safety of the equipment.

The bottom of the circuit breaker handcart room is provided with a grounding switch interlocking mechanism, which includes a switch limiting baffle, the baffle is arranged at the front end of the guide rail, and a valve mechanism is provided on the back panel of the circuit breaker handcart room behind the guide rail; The middle part of the guide rail is provided with an interlocking tongue corresponding to the movement track of the handcart of the circuit breaker. The interlocking tongue is linked with the baffle plate, and the grounding switch is interlocked with the front and rear cabinet doors of the cabinet. The safe and reliable operation of the equipment is guaranteed by the interlock mechanism. 5XS.260.011 and 5XS.260.010 guide rails can be used for the guide rail, 5XS.363.010 interlock mechanism can be used for the grounding switch interlock mechanism, and 5XS.320.010 valve mechanism can be used for the valve mechanism.

Both the cabinet body and the partition are provided with cooling channels, and the cooling channels communicate with the cooling windows of the cabinet body.

The lower part of the rear cabinet door is provided with an observation window. The rear cabinet door is equipped with an observation window, which is convenient for observing the cable connection, and can use far-infrared rays to measure the temperature at the junction at any time, so that problems can be found and solved in time.

The cabinet body is made of aluminum-zinc plate, and the partition board is made of metal partition board.

The working process of the present utility model is illustrated below in conjunction with accompanying drawings.

1. The operation steps of opening the cabinet door.

The circuit breaker in the circuit breaker trolley is opened, the handcart cranks the circuit breaker handcart to the test position, the interlocking of the left and right guide rails is released, the baffle in the grounding interlock mechanism is pressed, the grounding switch is closed, and the front and rear cabinet doors are connected. The lock is released and the door can be opened safely.

2. Closing operation steps (all the front and rear cabinet doors are opened, the handcart of the circuit breaker is in the test position, and the grounding switch is in the closing position).

The front and rear cabinet doors are all closed, the handcart of the circuit breaker is at the test position, the interlocking of the left and right guide rails is released, the baffle in the grounding interlock mechanism is pressed, the grounding switch is opened, and the front and rear cabinet doors are interlocked to close the cabinet. The door is locked, the baffle in the grounding interlock mechanism is reset and locked, and the handcart of the circuit breaker can be shaken to the working position.

3. Interlocking relationship.

When the handcart of the circuit breaker is cranked into the working position, the interlocking tongues in the left and right guide rails cannot be stretched out, the baffles in the grounding interlock mechanism cannot be pressed, and the grounding switch cannot be operated. If the grounding switch is closed, the tongues in the left and right guide rails will stick out to block the track, and the handcart of the circuit breaker cannot be rolled in.

It can be understood that the above specific description of the utility model is only used to illustrate the utility model and is not limited to the technical solutions described in the embodiments of the utility model. Those of ordinary skill in the art should understand that the utility model can still be Modifications or equivalent replacements are carried out to achieve the same technical effect; as long as the needs of use are met, they are all within the protection scope of the present utility model.

Claims (6)

1. a kind of armored central enclosed AC metal switch apparatus, comprise cabinet, it is characterized in that being divided into control room, circuit breaker cart room, main bus bar room and cable vault by dividing plate in cabinet, control room is arranged on the front upper part of cabinet, circuit breaker cart room is at the front middle part of cabinet, main bus bar room is arranged on the rear middle and upper part of cabinet, and cable vault is arranged on the rear lower of cabinet; Both sides, lower end, described circuit breaker cart room are provided with guide rail, and guide rail is provided with circuit breaker cart, and upper end, circuit breaker cart room is provided with Secondary socket, and Secondary socket is connected with the secondary component in control room, and cabinet front end is provided with circuit breaker cart crank;

described main bus bar indoor are provided with wall bushing and contact box, main bus bar and high voltage bus folder is provided with in wall bushing, high voltage bus folder is connected with the insulator on the sidewall of main bus bar room, main bus bar is connected with the fixed contact in contact box by the first branch bar, the rear end of circuit breaker cart is provided with the first moving contact corresponding to described fixed contact, and the second moving contact of the rear end of circuit breaker cart is connected with the current transformer of lower end, main bus bar room by the second branch bar;

earthed switch, lightning arrester, zero-sequence transformer, cable clip is provided with in cable vault of institute, earthed switch is arranged on the front upper end of cable vault, lightning arrester is arranged on the front lower end of cable vault, zero-sequence transformer is arranged on the middle lower end of cable vault, earthed switch is connected with lightning arrester, zero-sequence transformer is connected with cable one end by cable clip, and the cable other end is connected with described second branch bar.

2. according to claim 1, an armored central enclosed AC metal switch apparatus, is characterized in that the upper end of described circuit breaker cart room and main bus bar room is provided with pressure relief plate.

3. a kind of armored central enclosed AC metal switch apparatus according to claim 2, it is characterized in that being provided with earthed switch interlocking device bottom described circuit breaker cart indoor, earthed switch interlocking device comprises switch defining baffle, baffle plate is arranged on guide rail front end, and the indoor backboard of circuit breaker cart at guide rail rear is provided with valve mechanism; In the middle part of guide rail, circuit breaker cart movement locus is provided with interlocking tongue, interlocking tongue and described baffle plate link, the front and back cabinet gate interlock of earthed switch and cabinet.

4. according to claim 3, an armored central enclosed AC metal switch apparatus, it is characterized in that described cabinet and dividing plate are provided with heat dissipation channel, heat dissipation channel is communicated with the radiator window of cabinet.

5. according to claim 4, an armored central enclosed AC metal switch apparatus, is characterized in that described rear cabinet door bottom is provided with observation window.

6. according to claim 5, an armored central enclosed AC metal switch apparatus, it is characterized in that described cabinet adopts aluminizing zine plate, dividing plate adopts metal partion (metp).