Flexible explosion-proof joint box and production method thereof

Abstract

The invention provides a flexible explosion-proof connector box comprising an upper box cover and a lower box cover which are detachably connected, and the upper box cover and the lower box cover are provided with an arc structure of which the middle part outwardly protrudes. When the upper box cover and the lower box cover are closed, the arc structures of the upper box cover and the lower box cover wrap the connector of a cable. The invention also provides a production method of the flexible explosion-proof connector box. The beneficial effects of the flexible explosion-proof connector box are that the flexible explosion-proof connector box has the characteristics of being flexible, fireproof, arc-extinguishing, pressure-relief and flame-retardant and also has temperature monitoring and other functions so that the flexible explosion-proof connector box is favorable for normal inspection and suitable for different installation environments, the protected cable connector can be effectively isolated, and other cables in the same gallery are not damaged when the protected cable connector has the electrical accident.

Description

Technical field [0001] The present invention relates to the technical field of power transmission and distribution, in particular to a flexible explosion-proof joint box and a production method thereof. Background technique [0002] In the process of construction and emergency repair of the distribution network, cables and cable intermediate joints are commonly used. Due to the limited construction environment, the common trench situation of multiple cables is common. When the cables are in the same groove, a huge impact will be generated when a cable middle connector fails, and the ambient temperature will rise. On the other hand, because there may be flammable gas in the cable trench, and the insulation material of the cable body is generally combustible, the failure of one cable connector is also very easy to produce open flames, which will cause other common trench cables to be affected and cause serious damage. The loss of power outages is immeasurable. Chinese Patent No. ...

AI Technical Summary

Problems solved by technology

Although this patent application has achieved flexible connection, it still has the following problems: 1. Its operation is complicated. Place the flexible bellows 3 on the middle joint of the cable; then fasten the upper shield 1 and the lower shield 2 of the explosion-proof end, and connect the flexible bellows 3 through the flange 4 and the fastening screw 5; then pass The filling hole 6 located on the explosion-proof end fills the explosion-proof box with protective materials 9 such as fine sand or dry powder flame retardant, and then plugs the filling hole 6 with a hole plug 7

"There are many steps and complicated materials, especially the flexible bellows used need to penetrate the cable, and the operation is limited in a small space; 2. It still needs to be filled with explosion-proof, resulting in a thicker coating outside the cable joint , when the abnormal condition of the joint occurs, the signal of the abnormal condition of the joint cannot be effectively transmitted; 3. The flexible bellows is still doped with a metal skeleton, and the connection method still needs to use conductive connectors, which will inevitably form a closed-loop conductive path , under the influence of the magnetic field generated by the energized cable, the closed-loop conductive path formed will form a circulating current inside it, generate heat, and pose a safety hazard

4. Its structural material is hard material such as steel, which is easy to squeeze or even damage the skin of the surrounding cables, and the insulation performance of the flexible bellows is not ideal

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