CN206422435U - Low-tension switch cabinet safety device - Google Patents

Abstract

The utility model discloses a safety protection device for a low-voltage switch cabinet. The front part and the rear part of the cabinet body are both open, and a front cabinet door is movably installed on the front part of the cabinet body, and A rear cabinet door is installed, and ventilation holes are opened on the front and rear side walls of the cabinet body, and it also includes a front insulating board, a rear insulating board, a locking device, a pair of cover plates and plastic bolts, and the locking device is divided into two parts: It is a front locking device and a rear locking device. The front insulating plate is movably installed at the opening of the front of the cabinet and is located inside the front cabinet door. The front insulating plate is locked by the front locking device. On the front insulating plate There are operating ports and wire holes. The utility model has the advantages of improving the safety of viewing and other operations, and greatly improving the heat dissipation effect. At the same time, the heat dissipation holes are set on the side wall, so that dust is not easy to fall into the cabinet.

Description

Low-voltage switchgear safety protection device

technical field

The utility model relates to the technical field of low-voltage switch cabinets, more specifically to the technical field of protective devices for low-voltage switch cabinets.

Background technique

Low-voltage switchgear is suitable for power distribution systems of power users such as substations, power plants, factories and mines, and is used for power conversion, distribution and control of equipment such as power, lighting, and power generation and distribution. It consists of a row and the electrical components installed inside it. During the use of the low-voltage switchgear, the cabinet door may be accidentally opened, and there is a danger of electric shock; when the low-voltage switchgear is inspected and other operations are performed, operation errors may also occur and touch live components and cause electric shock accidents; At present, the common low-voltage switchgear generally adopts the method of insulating the busbars with insulating sleeves for insulation protection. Although this method has good insulation effect, it greatly hinders the heat dissipation performance of the busbars. When the low-voltage switchgear is in use, the internal electrical components may be short-circuited or other unexpected conditions may cause the electrical components to explode. When an explosion occurs, an instantaneous high-pressure airflow will be generated in the low-voltage switchgear, and the high-pressure airflow will explode the cabinet door. , will cause harm to the people around the low-voltage switchgear, so it is generally necessary to set up a pressure relief protection structure, but the design of the current common low-voltage switchgear pressure relief protection structure is not very reasonable, the pressure relief effect is poor, and there is a large safety hazard. In addition, the current common low-voltage switchgear generally only has cooling holes on the side wall of the cabinet body, and its heat dissipation performance is poor.

Utility model content

The purpose of this utility model is to provide a low-voltage switchgear safety protection device with simple structure, reasonable design, which can effectively avoid false electric shock accidents, good heat dissipation performance, good pressure relief effect and excellent protection performance in order to solve the above-mentioned deficiencies.

The technical solution that the utility model adopts in order to solve the above technical problems is as follows:

The low-voltage switchgear safety protection device includes a cabinet body. The front and rear parts of the cabinet body are open. The front cabinet door is movably installed on the front part of the cabinet body, and the front cabinet door is movably installed on the rear part of the cabinet body. There is a rear cabinet door, and ventilation holes are respectively opened on the front and rear side walls of the cabinet body, and it also includes a front insulating board, a rear insulating board, a locking device, a pair of cover plates and plastic bolts, and the locking device is divided into A front locking device and a rear locking device, the front insulating plate is movably installed at the opening of the front of the cabinet and is located inside the front cabinet door, the front insulating plate is locked by the front locking device, and an opening is set on the front insulating plate There are operation ports and wire holes. The rear insulating plate is movably installed at the opening at the rear of the cabinet and is located inside the rear cabinet door. The rear insulating plate is locked by the rear locking device. The front insulating plate and the rear insulating The boards are all transparent boards, and the front insulation board and the rear insulation board are respectively hinged with the cabinet through the first hinge. There is a pressure relief port on the top of the warehouse, and the pair of cover plates are respectively movable to cover the pressure relief port. The pair of cover plates are respectively hinged with the cabinet body through the second hinge, and are arranged in splits. , the two sides of the pair of cover plates are respectively fixed and installed on the top of the cooling chamber by plastic bolts.

The locking device is composed of a fixed shaft, a lock pin and a lock catch, the fixed shaft is fixedly installed on the front insulation board or the rear insulation board, the rear end of the lock pin is movably installed on the fixed shaft, and the lock catch is fixed Installed on the cabinet body, the lock buckle is L-shaped, and the front part of the lock pin is placed on the lock buckle.

The beneficial effects that the utility model can achieve by adopting the above-mentioned technical solutions are as follows: the front insulating board and the rear insulating board are respectively movable installed at the openings of the front part and the rear part of the cabinet body, and the front locking device and the rear locking device Locking, so as to play a very good role in isolation and protection, effectively avoiding the situation of accidentally touching the charged body, greatly improving the safety of inspection and other operations, and at the same time, there is an operation port on the front insulation plate, which can be directly It is very convenient to operate the air switch and other electrical equipment in the low-voltage switchgear through the operating port. When it is necessary to overhaul the inside of the low-voltage switchgear, it is only necessary to open the locking device, and the operation is very convenient. When an explosion occurs in the low-voltage switchgear, the high-pressure airflow inside will break the low-strength plastic bolts, thereby breaking the paired cover plates for pressure relief. The paired cover plates are of split design, so that It has a good pressure relief effect. There are cooling holes on the side walls of the cooling chamber, the hot air in the cabinet is discharged from the cooling holes, and the cold air from the outside enters the cabinet from the ventilation holes on the front and rear side walls of the cabinet to make the air flow and greatly improve the performance of the cabinet. The heat dissipation effect is improved, and the heat dissipation holes are set on the side wall, so that the dust is not easy to fall into the cabinet.

Description of drawings

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

Fig. 2 is a rear view structural schematic diagram of Fig. 1;

Fig. 3 is a top view structural diagram of Fig. 1;

Fig. 4 is a structural schematic diagram of the locking device.

detailed description

As shown in Figure 1 and Figure 2, the low-voltage switchgear safety protection device includes a cabinet body 1, the front and rear parts of the cabinet body 1 are open, and the front part of the cabinet body 1 is movable. The front cabinet door 2 is movably installed with a rear cabinet door 3 at the rear of the cabinet body 1, and ventilation holes 11 are respectively provided on the front and rear side walls of the cabinet body 1. It also includes a front insulating plate 4, a rear insulating plate 5, a locking device, a pair of cover plates 17 and plastic bolts 19, the locking device is divided into a front locking device 7 and a rear locking device 8, and the front insulating plate 4 It is movably installed at the opening of the front part of the cabinet body 1 and is located inside the front cabinet door 2. The front insulating plate 4 is locked by the front locking device 7. An operation port 9 and a wire hole 10 are opened on the front insulating plate 4. , the operating port 9 is used to operate electrical equipment such as air switches in the low-voltage switch cabinet, and the wire hole 10 is used to pass the connecting wires of the control equipment or instruments installed on the front cabinet door 2. The rear insulating plate 5 is movably installed at the opening at the rear of the cabinet body 1, and is located inside the rear cabinet door 3, and the rear insulating plate 5 is locked by a rear locking device 8. The front insulating plate 4 and the rear insulating plate 5 are all transparent plates, so that after opening the front cabinet door 2 and the rear cabinet door 3, the operator can directly Check the electrical equipment in the low-voltage switchgear or operate the air switch and other equipment. The front insulating board 4 and the rear insulating board 5 are respectively hinged with the cabinet body 1 through the first hinge 12 . The top of the cabinet body 1 is provided with a cooling bin 20, and the side walls of the cooling bin 20 are respectively provided with cooling holes 21, which can play a good heat dissipation effect, and at the same time, dust is not easy to fall into the cabinet body 1, and the cabinet body The hot air in the cabinet 1 is discharged from the cooling holes 21, and the cold air from the outside enters the cabinet body 1 through the ventilation holes 11 on the front and rear side walls of the cabinet body 1, so that the air flows. As shown in Fig. 4, the locking device is composed of a fixed shaft 13, a lock pin 14 and a lock catch 15, the fixed shaft 13 is fixedly mounted on the front insulating plate 4 or the rear insulating plate 5, and the rear of the lock pin 14 The end is movably installed on the fixed shaft 13, and the lock catch 15 is fixedly installed on the cabinet body 1. The lock catch 15 is L-shaped, and the front part of the lock pin 14 is placed on the lock catch 15. When the electrical equipment in the low-voltage switchgear needs to be overhauled, the lock pin 14 is rotated to disengage from the lock catch 15, and the front insulating plate 4 or the rear insulating plate 5 can be opened for operation. As shown in Figure 3, the top of the heat dissipation chamber 20 is provided with a pressure relief port 16, and the pair of cover plates 17 are respectively movable to cover the pressure relief port 16, and the pair of cover plates 17 pass through the first The two hinges 18 are hinged with the cabinet body 1 and are arranged in splits. The two sides of the pair of cover plates 17 are respectively fixed and installed on the top of the cooling chamber 20 by plastic bolts 19 .

Claims (2)

1. The safety protection device of the low-voltage switchgear, which includes a cabinet body. The front and rear parts of the cabinet body are both open. The rear cabinet door is movable, and the front and rear side walls of the cabinet body are respectively provided with ventilation holes. It is characterized in that it also includes a front insulating plate, a rear insulating plate, a locking device, a pair of cover plates and plastic bolts, The locking device is divided into a front locking device and a rear locking device. The front insulating board is movably installed at the opening of the front of the cabinet and is located inside the front cabinet door. The front insulating board is locked by the front locking device. The front insulating plate is provided with an operation port and a wire hole. The rear insulating plate is movably installed at the opening at the rear of the cabinet and is located inside the rear cabinet door. The rear insulating plate is locked by a rear locking device. Both the front insulating board and the rear insulating board are transparent boards, and the front insulating board and the rear insulating board are respectively hinged with the cabinet body through the first hinge. There are heat dissipation holes, and the top of the heat dissipation chamber is provided with a pressure relief port. The paired cover plates are respectively movable to cover the pressure relief port, and the paired cover plates are respectively hinged to the cabinet body through the second hinge. And it is arranged in splits, and the two sides of the paired cover plates are respectively fixed and installed on the top of the heat dissipation chamber by plastic bolts. 2. The low-voltage switchgear safety protection device according to claim 1, characterized in that: the locking device is composed of a fixed shaft, a lock pin and a lock, and the fixed shaft is fixedly installed on the front insulation board or the rear insulation board , the rear end of the lock pin is movably installed on the fixed shaft, the lock catch is fixedly installed on the cabinet body, the lock catch is L-shaped, and the front part of the lock pin is placed on the lock catch.