Explosion proof box for transparent cable intermediate joint

Abstract

The invention discloses an explosion proof box for a transparent cable intermediate joint. The explosion proof box comprises an upper cover, a lower cover, an energy release hole cover, sealing ribs, and a transition one-piece layer. The upper cover and the lower cover are connected to form a cylindrical body. The upper cover and the lower cover are connected through a plane. Two ends of the cylindrical body are contracted and two small diameter cylinders are formed close to two end part positions. The inner sides of the small diameter cylinders are provided with two parallel sealing grooves respectively, and a first sealing ring is installed in each sealing grooves. Both the upper and lower covers are made of transparent PTFE ethylene materials, transparent materials and flame retardant materials. The side faces of the upper cover and the lower cover are provided with energy release holes, and the energy release hole cover made of silicon rubber is installed on the energy release holes. According to the explosion proof box for the transparent cable intermediate joint, sealing strips and the sealing rings are integrally formed in one time, a silicone rubber material is adopted, and the waterproof performance is excellent.

Description

technical field [0001] The invention relates to the technical field of explosion-proof boxes for cables, in particular to an explosion-proof box for intermediate joints of transparent cables. Background technique [0002] 13.2.1.5 Prevention of cable fires The outermost layer of non-directly buried cable joints should be covered with flame-retardant materials, oil-filled cable joints and densely laid medium-voltage cables in 2011. The joints should be sealed with fire-resistant and explosion-proof groove box. 13.2.2.1 The in-service joints in the cable-intensive area shall be equipped with fireproof boxes or other fireproof isolation measures. [0003] The State Grid Corporation of China has also put forward strict requirements for the fire protection and explosion protection of cables and cable intermediate joints. This item implements the "Typical Fire Protection Regulations for Electric Equipment" (DL5027-93) and other relevant regulations. [0004] 1. The cable interm...

AI Technical Summary

Problems solved by technology

2 ①Glass steel material, ②glass fiber material, ③nylon fiber material, ④composite carbon fiber material, ⑤fireproof board material, ⑥fireproof plastic material, ⑦PVC material, ⑧ABS material; Insulation effect, but after the product is installed, it does not really achieve the sealing effect and has air circulation, and its anti-explosion performance is also poor; and after the product is installed, it fails to protect the cable intermediate joint, and the cable intermediate joint is short-circuited or exploded Finally, burning may occur at the middle joint of the cable, and even a cable fire may occur in serious cases

[0014] 4. The technical defect of the explosion-proof boxes for cable intermediate joints on the market is that the raw materials are opaque. After the accident, because the cable joints are more concentrated in one place, the grid staff cannot quickly find the accident during the on-site inspection. Cable fault point; greatly increased and wasted the time of inspecting the accident staff and the difficulty of troubleshooting the accident point

Images