CN104134935A - Explosion-proof distribution box - Google Patents

Abstract

The invention discloses an explosion-proof power distribution box, which is composed of a wiring room, a power distribution frame, a smoke alarm, a sealing cover, a lead pipe, a heat-shrinkable sleeve and a rubber blocking block, and at least two wiring ports are arranged on the side wall of the wiring room , an exhaust port and an air pressure detection port, another layer of explosion-proof glass baffle is set in the wiring room, the power distribution frame is installed in the wiring room, the smoke alarm is installed on the power distribution frame, the wiring port is connected to one end of the lead pipe through bolts, A rubber block is installed inside the other end of the lead pipe, and at least three wedge-shaped anti-slip grooves are arranged on the outer surface, and one end of the heat-shrinkable sleeve is covered on the wedge-shaped anti-skid grooves of the lead pipe. The invention has simple structure, convenient installation, good isolation effect between electrical equipment and the outside world, good fire alarm, flame retardant and fire extinguishing effects while having anti-leakage function, thereby effectively isolating, alarming and riot-proofing electrical equipment And the flame retardant effect, greatly improving the safety of the power supply line and the safety of the use site.

Description

An explosion-proof power distribution box

technical field

The invention relates to an explosion-proof power distribution box, which belongs to the field of power line protection equipment.

Background technique

In the erection of power cables, the connection of power lines and electrical appliances, and the installation and operation of electrical appliance control systems, the power distribution box is the main installation and protection equipment, and it is used in a huge amount. In actual use, it is found that: the joints of electrical equipment, During the operation of the joints between cables and electrical equipment such as relays, leakage, short circuit, and ignition of electric shock parts are prone to occur. However, when a fire occurs in the power distribution box, it is very easy to cause a large area of fire or even an explosion. Therefore, in order to overcome this problem, the current common solution is to use an explosion-proof shell to cover the cable joint. To achieve the purpose of isolating the cable joint from the surrounding environment, so that when the cable joint has a fault such as leakage or fire, it will not cause a large-scale fire or explosion accident in a short period of time. At present, the commonly used explosion-proof enclosures mainly rely on rubber seals. Therefore, its isolation and sealing effect is poor, and it does not have the function of preventing and flame retardant for the fire of the cable joint, and it will still cause fire or explosion, and because it adopts a fully sealed structure , there is a lack of timely observation and alarm for fires that do not occur in the distribution box, so there is still a large risk of use, and it cannot effectively meet the needs of isolation and explosion-proof use.

Contents of the invention

The object of the present invention is to overcome the above disadvantages and provide an explosion-proof power distribution box.

To achieve the above object, the present invention is achieved through the following technical solutions:

An explosion-proof power distribution box, which is composed of a wiring room, a power distribution frame, a smoke alarm, a sealing cover, a lead pipe, a heat-shrinkable sleeve and a rubber block, wherein the wiring room and the sealing cover are connected by bolts, and the wiring room The inner surface of the wall and the sealing cover is additionally provided with an insulating ceramic coating, and the insulating ceramic coating is additionally coated with a layer of flame-retardant PVC cushion, and the junction chamber and the sealing cover are provided with at least one sealing groove on the opposing surface. The corresponding position of the sealing cover and the sealing groove is provided with a sealing strip, wherein the height of the sealing strip is 0.5-2 times the depth of the sealing groove, and the width is the same as the width of the sealing groove. At least two wiring ports, one An exhaust port and an air pressure detection port. The wiring chamber is at least 1 cm away from the sealing cover and an explosion-proof glass baffle is provided. The explosion-proof glass baffle is hinged to the side wall of the wiring chamber. The electric rack is installed in the wiring room, and the distance from the bottom and side of the wiring room is not less than 1 cm, and the distance from the explosion-proof glass baffle is not less than 10 cm. The smoke alarm is installed on the power distribution frame, and the wiring The port is connected to one end of the lead pipe through bolts, and at least one layer of sealing strip is provided between the lead pipe and the wiring chamber, and at least one layer of elastic baffle is provided at the connection between the lead pipe and the connection port, and a flame retardant is provided inside the lead pipe. PVC cushion, a pneumatic stop valve is set on the exhaust port, an air pressure indicator is set on the air pressure detection port, a rubber block is installed in the other end of the lead pipe, and at least three wedge-shaped anti-skid grooves are arranged on the outer surface. The rubber block is additionally provided with a wire hole, and one end of the heat-shrinkable sleeve is covered on the wedge-shaped anti-skid groove of the lead tube, and the other end is at least 5 cm away from the lead tube.

The invention has simple structure, convenient installation, good isolation effect between electrical equipment and the outside world, good fire alarm, flame retardant and fire extinguishing effects while having anti-leakage function, thereby effectively isolating, alarming and riot-proofing electrical equipment And the flame retardant effect, greatly improving the safety of the power supply line and the safety of the use site.

Description of drawings

Fig. 1 is a schematic diagram of the structure of the present invention.

Detailed ways

As shown in Figure 1, an explosion-proof power distribution box is composed of a wiring compartment 1, a power distribution frame 2, a smoke alarm 3, a sealing cover 4, a lead pipe 5, a heat shrinkable sleeve 6 and a rubber block 7, wherein the wiring The chamber 1 and the sealing cover 4 are connected by bolts 16, and the inner wall of the wiring chamber 1 and the inner surface of the sealing cover 4 are additionally provided with an insulating ceramic coating 8, and the insulating ceramic coating 8 is additionally covered with a layer of flame-retardant PVC mat Layer 9, at least one sealing groove 10 is provided on the abutting surface of the junction chamber 1 and the sealing cover 4, and the corresponding position of the sealing cover 4 and the sealing groove 10 is provided with a sealing strip 11, wherein the height of the sealing strip 11 is the depth of the sealing groove 10 0.5-2 times of the width of the sealing groove 10, the width of which is the same as that of the sealing groove 10. At least two wiring openings 12, one exhaust opening 13 and one air pressure detection opening 14 are arranged on the side wall of the wiring chamber 1, and the inside of the wiring chamber 1 Another layer of explosion-proof glass baffle 15 is provided at a distance of at least 1 cm from the sealing cover 4. The explosion-proof glass baffle 15 is hingedly connected to the side wall of the wiring compartment 1, and the described power distribution frame 2 is installed in the wiring compartment 1. And the distance from the bottom surface and side of the wiring room 1 is not less than 1 cm, and the distance from the explosion-proof glass baffle 15 is not less than 10 cm. The smoke alarm 3 is installed on the distribution frame 2, and the wiring port 12 passes through The bolt 16 is connected to one end of the lead pipe 5, and at least one layer of sealing strip 11 is additionally provided between the lead pipe 5 and the wiring chamber 1, and at least one layer of elastic retainer 17 is additionally provided at the connection between the lead pipe 5 and the connection port 12, the described A flame-retardant PVC cushion 9 is provided in the lead pipe, a pneumatic stop valve 18 is provided on the exhaust port 13, an air pressure indicator 19 is installed on the air pressure detection port 14, and an air pressure indicator 19 is installed on the other end of the lead pipe 5. Install the rubber block 7, the outer surface is provided with at least three wedge-shaped anti-slip grooves 20, the rubber block 7 is additionally provided with a wire hole 21, and one end of the heat-shrinkable sleeve 6 is coated on the wedge-shaped anti-slip groove of the lead pipe 5 20, the other end is at least 5 cm away from the lead pipe 5.

Claims (1)

1. An explosion-proof power distribution box, characterized in that: the explosion-proof power distribution box is composed of a wiring compartment, a power distribution frame, a smoke alarm, a sealing cover, a lead pipe, a heat-shrinkable sleeve and a rubber block, wherein the wiring The chamber and the sealing cover are connected by bolts. The inner wall of the wiring chamber and the inner surface of the sealing cover are additionally provided with an insulating ceramic coating. The insulating ceramic coating is additionally covered with a layer of flame-retardant PVC cushion. The wiring chamber At least one sealing groove is arranged on the surface against the sealing cover, and the corresponding position of the sealing cover and the sealing groove is provided with a sealing strip, wherein the height of the sealing strip is 0.5-2 times the depth of the sealing groove, and the width is the same as the width of the sealing groove. At least two wiring ports, one exhaust port and one air pressure detection port are arranged on the side wall of the wiring room, and a layer of explosion-proof glass baffle is provided at least 1 cm away from the sealing cover in the wiring room, and the explosion-proof glass baffle is The panel is hinged to the side wall of the wiring room. The power distribution frame is installed in the wiring room, and the distance from the bottom and side of the wiring room is not less than 1 cm, and the distance from the explosion-proof glass baffle is not less than 10 cm. The smoke The alarm is installed on the power distribution frame, and the wiring port is connected to one end of the lead pipe through bolts, and at least one layer of sealing strip is provided between the lead pipe and the wiring chamber, and at least one layer of sealing strip is provided at the connection between the lead pipe and the wiring port. Elastic baffles, a flame-retardant PVC cushion layer is provided in the lead pipe, a pneumatic stop valve is provided on the exhaust port, an air pressure indicator is installed on the air pressure detection port, and an air pressure indicator is installed on the other end of the lead pipe. Rubber block, at least three wedge-shaped anti-slip grooves are provided on the outer surface, and a wire hole is provided on the rubber block. One end of the heat-shrinkable sleeve is covered on the wedge-shaped anti-skid groove of the lead tube, and the other end is separated from the lead tube. At least 5 cm.