Explosion-proof distribution box

Abstract

The invention discloses an explosion-proof distribution box. The explosion-proof distribution box is composed of a wiring chamber, a distribution frame, a smoke alarm, a seal cover, wire lead tubes, heat-shrinkable bushes and rubber plugs. The side wall of the wiring chamber is at least provided with two wiring ports, an exhaust port and an air pressure detection port, an explosion-proof glass baffle is further arranged in the wiring chamber, the distribution frame is installed in the wiring chamber, and the smoke alarm is installed on the distribution frame. Each wiring port is connected with one end of the corresponding wire lead tube through a bolt, each rubber plug is installed in the other end of the corresponding wire lead tube, the outer surface of each wire lead tube is provided with at least three wedge-shaped antiskid grooves, and the wedge-shaped antiskid grooves of each wire lead tube are wrapped by one end of the corresponding heat-shrinkable bush. The explosion-proof distribution box is simple in structure and convenient to install, enables electrical equipment to be well isolated from the outside, has the electric leakage preventing function and meanwhile has the good effects of fire alarming, inflaming retarding and fire extinguishing, thereby having the isolating, alarming, explosion preventing and inflaming retarding effects on the electrical equipment and greatly improving the safety of a power supply line and the safety of a use site.

Description

technical field [0001] The invention relates to an explosion-proof power distribution box, which belongs to the field of power line protection equipment. Background technique [0002] 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...

AI Technical Summary

Problems solved by technology

[0002] 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

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