A new type of cable joint protection box

Abstract

The invention relates to a novel cable joint protection box. The novel cable joint protection box mainly comprises two double-layered semi-cylindrical outer shells and an inner shell, wherein the twodouble-layered semi-cylindrical outer shells are in butt joint with each other; the inner shell wraps a cable middle joint; the inner shell is filled with epoxy resin; the outer shells wrap the innershell; two ends of the outer shells are inwardly contracted to form contracted openings; the contracted openings are provided with plugs; the outer side walls of the contracted openings are provided with a plurality of fixing hooks; the thin-side-walled ends of the plugs protrude from the corresponding contracted openings; the thin-side-walled ends of the plugs are provided with a plurality of connection belts; and end portions of the connection belts are provided with annular fixing rings; and the fixing rings are connected with the fixing hooks of the outer side walls of the contracted openings. The protection box of the invention has the advantages of scientific design and good waterproof, fireproof and explosion-proof performance.

Description

technical field [0001] The invention relates to the field of power cable accessories, in particular to a novel cable joint protection box. Background technique [0002] The cable joint is the connection of two cables. After the connection of the two cables is connected through the joint, it needs to be waterproof, fireproof, explosion-proof and sealed. Therefore, a special joint protection box is required. [0003] Chinese patent CN103311872A discloses an airbag type cable splice protection box, wherein the airbag type cable splice protection box includes a box body with an opening and an airbag covering the opening. Once the short-circuit explosion occurs in the middle joint of the cable, the instantaneous flame and arc can be confined in the box body, and the expansion pressure can be released from the box body into the air bag, thereby reducing the pressure in the cable joint protection box and avoiding damage or decomposition of the box body , which is conducive to main...

AI Technical Summary

Problems solved by technology

[0005] At present, most of the cable intermediate joint protection boxes on the market have the function of fireproof, waterproof and explosion-proof, but the connection between the cable and the end of the protection box generally needs to be poured with sealing material or wrapped with waterproof tape, etc., the operation process is more complicated, and at the same time Consumes more materials

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