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Ship high ampacity low surface temperature rise power cable and manufacturing method thereof

A technology for power cables and manufacturing methods, which are applied in the field of ship high current-carrying capacity and low surface temperature rise power cables, and ship high current capacity and low surface temperature rise power cables, can solve the problem of affecting facility safety, reducing cable current-carrying capacity, It is not enough to reduce the temperature rise of the cable surface and other problems to achieve the effect of increasing the current carrying capacity and reducing the temperature.

Active Publication Date: 2015-12-09
山东大河机械制造股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Ship high ampacity low surface temperature rise power cable and manufacturing method thereof
  • Ship high ampacity low surface temperature rise power cable and manufacturing method thereof
  • Ship high ampacity low surface temperature rise power cable and manufacturing method thereof

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Effect test

Embodiment 1

[0020] Such as figure 1 As shown, the power cable with high ampacity and low surface temperature rise for ships of the present invention includes the following steps in turn: uniformly extruding a high thermal resistance coefficient flame-retardant refractory insulating layer 2 on the outer periphery of the stranded copper conductor 1, The outer periphery of the refractory insulation layer 2 is covered with a filament glass fiber braided reinforcement layer 3 to form a power cable insulation core, and multiple power cable insulation cores are twisted to form a power cable core, and the gaps between the power cable insulation cores are filled. The high thermal resistance coefficient flame-retardant fire-resistant filler core 4 rounds the cable core, wraps the high thermal resistance coefficient flame-retardant fire-resistant longitudinal tape 5 on the outer periphery of the power cable core, and finally extrudes the high thermal resistance coefficient flame-retardant fire-resist...

Embodiment 2

[0027] Such as figure 1 As shown, the power cable with high ampacity and low surface temperature rise for ships of the present invention includes the following steps in turn: uniformly extruding a high thermal resistance coefficient flame-retardant refractory insulating layer 2 on the outer periphery of the stranded copper conductor 1, The outer periphery of the refractory insulation layer 2 is covered with a filament glass fiber braided reinforcement layer 3 to form a power cable insulation core, and multiple power cable insulation cores are twisted to form a power cable core, and the gaps between the power cable insulation cores are filled. The high thermal resistance coefficient flame-retardant fire-resistant filler core 4 rounds the cable core, wraps the high thermal resistance coefficient flame-retardant fire-resistant longitudinal tape 5 on the outer periphery of the power cable core, and finally extrudes the high thermal resistance coefficient flame-retardant fire-resist...

Embodiment 3

[0034] Such as figure 1 As shown, the power cable with high ampacity and low surface temperature rise for ships of the present invention includes the following steps in turn: uniformly extruding a high thermal resistance coefficient flame-retardant refractory insulating layer 2 on the outer periphery of the stranded copper conductor 1, The outer periphery of the refractory insulation layer 2 is covered with a filament glass fiber braided reinforcement layer 3 to form a power cable insulation core, and multiple power cable insulation cores are twisted to form a power cable core, and the gaps between the power cable insulation cores are filled. The high thermal resistance coefficient flame-retardant fire-resistant filler core 4 rounds the cable core, wraps the high thermal resistance coefficient flame-retardant fire-resistant longitudinal tape 5 on the outer periphery of the power cable core, and finally extrudes the high thermal resistance coefficient flame-retardant fire-resist...

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Abstract

The invention relates to a vessel high-carrying-capacity low-surface-temperature-rise power cable and a manufacturing method thereof. A high-thermal-resistance-coefficient inflaming retarding fire-resistant insulating layer evenly wraps the periphery of a twisted copper conductor in a squeezing mode, a filament glass fiber woven reinforcement layer wraps the periphery of the high-thermal-resistance-coefficient inflaming retarding fire-resistant insulating layer to form power cable insulating cable cores, the power cable insulating cable cores are mutually twisted to form a power cable core, and gaps among the power cable insulating cable cores are filled with high-thermal-resistance-coefficient inflaming retarding fire-resistant filling cores so that the cable core can be rounded off. A high-thermal-resistance-coefficient inflaming retarding fire-resistant longitudinal wrapping belt wraps the periphery of the power cable core, and at last, a high-thermal-resistance-coefficient chemical crosslinking polyolefin outer sheath wraps the periphery of the high-thermal-resistance-coefficient inflaming retarding fire-resistant longitudinal wrapping belt in a squeezing mode. According to the power cable, the temperature of the outer wall of the power cable can be reduced, and the carrying capacity can be improved under the condition that the cross sections of conductors are the same.

Description

technical field [0001] The invention relates to a power cable, in particular to a power cable with high ampacity and low surface temperature rise for ships. The invention also relates to a manufacturing method of a power 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-sectional ar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B9/00H01B7/02H01B7/29H01B7/295H01B13/00H01B13/14H01B13/24
Inventor 李永江韦长天
Owner 山东大河机械制造股份有限公司