Anti-nuclear electromagnetic multi-core pulse direct-current cable

Abstract

The invention belongs to the technical field of wires and cables and particularly relates to an anti-nuclear electromagnetic multi-core pulse direct-current cable which comprises conductors, insulators, a central filling core, a shielding layer and a sheath, the insulators wrap the conductors to serve as current-carrying wire cores, the multiple current-carrying wire cores are closely arranged andstranded outside the central filling core to form a cable with a multilayer structure, the cable is wrapped by the shielding layer, and the shielding layer is wrapped by the sheath, the current-carrying wire cores are divided into positive wire cores A and negative wire cores B, the positive wire cores A and the negative wire cores B on the same layer are alternately arranged, and adjacent positive wire core A and negative wire core B on the same layer form a group of loops; or all the positive wire cores A and the negative wire cores B in the cable are crossed and connected in parallel to form a loop. By optimizing the arrangement of the current-carrying wire cores, stray electromagnetic fields in any axial direction can be reduced or counteracted, the high-current power transmission quality is ensured, and the electric corrosion to equipment around the cable is reduced.

Description

technical field [0001] The invention belongs to the technical field of electric wires and cables, and in particular relates to a multi-core pulse direct current cable resistant to nuclear electromagnetics. Background technique [0002] At present, the current required by many high-energy equipment is at the kiloampere level or even greater. The pulsed DC power supply system supplies power to the equipment and transmits it to the equipment through cables. At present, single-core or two-core twisted cables are usually used for DC transmission, but these cables have serious defects for high-current DC pulse equipment. According to the GJB4000-2000 general specification for ships, single-core cables should be avoided as far as possible for both AC and DC systems, because a single-core DC cable needs two cables to form a loop, and the distance between the loop conductors is large, and stray current is easy to cause damage to the surroundings. The equipment produces electrical co...

AI Technical Summary

Problems solved by technology

According to the GJB4000-2000 general specification for ships, single-core cables should be avoided as far as possible for both AC and DC systems, because a single-core DC cable needs two cables to form a loop, and the distance between the loop conductors is large, and stray current is easy to cause damage to the surroundings. The equipment produces electrical corrosion, which affects the performance and safety life of the equipment; if the two-core cable transmits a large current, the specification will be large, causing it to be bulky and difficult to bend, and the multi-frequency short-term power supply of the equipment may easily cause the electromagnetic effect of the cable and the electromotive force to affect the equipment

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