Ship and warship protection cable high in current carrying capacity and low in surface temperature rise and manufacture method thereof

Abstract

The invention relates to a ship and warship protection cable high in current carrying capacity and low in surface temperature rise and a manufacture method thereof. A flame-retardant fire-resistant insulating layer high in thermal resistivity evenly wraps a stranded copper conductor in an extruding mode. A filament glass fiber woven reinforcing layer wraps the flame-retardant fire-resistant insulating layer high in thermal resistivity so as to form an electric cable insulating wire core. A plurality of electric cable insulating wire cores are mutually stranded to form an electric cable core. Flame-retardant fire-resistant padding high in thermal resistivity is filled into clearance between the electric cable insulating wire cores so as to enable the cable core to be round and neat. A flame-retardant fire-resistant longitudinal wrapping band high in thermal resistivity wraps the electric cable core. A chemical cross-linked polyolefin inner protection sleeve high in thermal resistivity wraps the flame-retardant fire-resistant longitudinal wrapping band high in thermal resistivity in an extruding mode. An armoured braid layer wraps the inner protection sleeve. A chemical cross-linked polyolefin outer protection sleeve high in thermal resistivity wraps the armoured braid layer. The high protection cable can reduce the temperature of the outer wall of cables, and can be improved in current-carrying capacity on the condition that section areas of conductors are the same.

Description

technical field [0001] The invention relates to a power cable, in particular to a protective cable with high ampacity and low surface temperature rise for ships. The invention also relates to a manufacturing method of a protective cable with high ampacity and low surface temperature rise for ships. Background technique [0002] As the country pays more attention to the development and utilization of marine energy, a large number of new ships have been built. Since most of the ships sail in the open sea and spend a long time at sea, it is necessary to reduce the weight of the ship itself and increase the payload of the ship. As the power transmission equipment of the ship, the weight of the cable has a great influence on the load of the ship. The weight of the cable is related to the cross-sectional area of ​​the conductor, and the cross-sectional area of ​​the conductor is mainly determined by the current-carrying capacity. In addition to the conductor material and cross-se...

AI Technical Summary

Problems solved by technology

[0003] The existing technology is mainly to increase the current carrying capacity of the cable by increasing the rated working temperature of the insulation and sheath material. However, due to the small thermal resistance coefficient of the existing material, the surface temperature of the cable is very high, which can reach 110 ° C. The heat dissipation in the narrow space of the ship is not smooth, causing the ambient temperature to rise, which will further reduce the current carrying capacity of the cable, and affect the safety of other surrounding facilities, resulting in a vicious circle

The thermal resistance coefficient of the existing rubber insulation material is 6.0 K m / W, and the thermal resistance coefficient of the low-smoke halogen-free sheath material is 3.5 K m / W, which is not enough to reduce the temperature rise of the cable surface

Images