Shielding treatment device for shielded compartment penetration cable for ship

Abstract

The invention discloses a shielding treatment device for a shielded compartment penetration cable for a ship. The shielding treatment device comprises a cable compartment penetration barrel and multiple cables which penetrate through the cable compartment penetration barrel, wherein the outer wall of the cable compartment penetration barrel is welded with a compartment penetration hole in a metal wall of the compartment; each cable comprises a metal armored cable and/or an insulated sheath cable; the metal armored cable directly penetrates through the cable compartment penetration barrel; multiple conductive film layers are tightly wound on a cable part where the insulated sheath cable penetrates through the cable compartment penetration barrel; flexible ferromagnetic adhesive tapes are wound on the insulated sheath cables on two sides of the conductive films; a certain spacing is formed between the flexible ferromagnetic adhesive tapes and the conductive films to form a common mode choke; soft metal wire balls with certain elasticity are filled in gaps between the cables and between the cables and the cable compartment penetration barrel; the metal wire balls are in a pressed shape; ion conductive paste is filled at two ends of the metal wire balls; waterproof sealant paste is filled on the outer side of the ion conductive paste at the two ends respectively. The shielding treatment device has the beneficial effects that the structure and strength of the cable are not damaged, and the electromagnetic interference is reduced.

Description

technical field [0001] The invention relates to a shielding treatment device for cables passing through a shielded cabin in a ship, which is used for electromagnetic shielding treatment when different types of cables on a ship pass through a shielded cabin, so as to reduce the leakage of the cabin penetration hole and the influence of the coupled radiation of the cable on the shielding performance of the cabin. influences. Background technique [0002] With the development of electronic information technology, the problems of electromagnetic environment and electromagnetic interference have become increasingly prominent. All kinds of naturally generated electromagnetic environments and artificially generated electromagnetic environments are becoming more and more dense, especially the intentional electromagnetic radiation environment generated by humans, with the purpose of interfering with, suppressing or even damaging the other party's electronic equipment, posing a great ...

AI Technical Summary

Problems solved by technology

Some people have proposed several shielding treatment methods. One method is to refer to the electromagnetic shielding cabin cable penetration technology disclosed in the application number 200610021215.2, remove part of the insulating sheath of the cable in the cable penetration tube, expose the shielding layer, and weld the grounding wire Screwed to the cable through-cabin and filled with steel balls, and then sealed at both ends of the cable through-cabin, this method is very easy to damage the shielding layer of the cable due to the complicated construction process, affecting the performance of the cable and reducing the cable performance. Strength, so basically not adopted

Another method is to cover the cable space with aluminum foil or copper foil after the cable laying and water-tight filling is completed, or fill the space between the cable and the bulkhead with a metal seal to shield electromagnetic waves. The effect of this method is very limited. , due to the limitation of the construction process, the gap between the cables cannot be completely covered, and the secondary radiation caused by the cable coupling conduction cannot be prevented

Images