Lightweight flexible LSOH (Low Smoke Zero Halogen) fire-resistant low-voltage marine cable and process flow thereof

Abstract

The invention discloses a lightweight flexible LSOH (Low Smoke Zero Halogen) fire-resistant low-voltage marine cable and a process flow thereof. The lightweight flexible LSOH fire-resistant low-voltage marine cable comprises a tin-plated flexible conductor, a ceramic silicone rubber insulating layer, an LSOH flame-retardant filling material, an LSOH wrapping tape layer, an LSOH flame-retardant isolating sleeve, a metal braid armor shielding layer and an LSOH flame-retardant protection sleeve. The cable disclosed by the invention has the advantages of heat insulation, fire insulation, waterproofness, shock resistance, low thermal weight loss, low smoke, zero halogen, flame retardance and the like. In case of a fire, a hard shell formed by the insulating layer can take good effects of flame retardance, fire resistance, fire prevention and fire insulation and effectively ensures smoothness of a line. The cable has the advantages of being flexible, small in size, light in weight and excellent in mechanical property and electrical property, meets the requirement of a complex laying environment in a ship, can effectively save a ship space and reduce a light ship weight of the ship and improves a cargo dead weight of the ship.

Description

technical field [0001] The invention specifically relates to a light, soft, low-smoke, halogen-free, fire-resistant marine cable and its process flow, which provide soft, small size, light weight, excellent mechanical and electrical properties for ships and marine engineering. Fire-resistant cables for transmission, circuit lighting and other occasions. Background technique [0002] Ships play a very important role in the five major modes of transportation. Due to the largest waterway transportation capacity, on the main line of the Yangtze River, the carrying capacity of a tug barge or push barge fleet has exceeded 10,000 tons, and the largest foreign push barge fleet has a carrying capacity of 10,000 tons. 30,000 to 40,000 tons, the largest oil tanker in the world has exceeded 500,000 tons; ocean transportation occupies a unique and important position in my country’s foreign economic and trade, and more than 90% of my country’s foreign trade goods use ocean transportation, ...

AI Technical Summary

Problems solved by technology

Magnesia mineral fire-resistant cables require special production and processing equipment for cables of this structure, and the equipment for producing magnesium oxide mineral fire-resistant insulated cables not only needs to be imported, but is also very expensive, and the capital investment is too large; The outer sheath is an all-metal structure, the cost is high, and it is limited to a certain extent in terms of international application; in addition, the metal-sheathed magnesium oxide mineral fire-resistant insulated cable is in the process of production, processing, transportation, line laying, installation and use. For example, the production and processing of magnesium oxide mineral fire-resistant insulated cables cannot be as convenient as polymer materials, and it is difficult to lay them in small and complicated cabins. The cost of raw materials is high, and it is difficult to popularize them on a large scale, especially in civilian ships. Online promotion, etc.

The fire-resistant cable wrapped with mica tape needs to be wound in multiple layers in the production process. Due to the limitation of process conditions, it is easy to cause defects at the lap joints. It is difficult to ensure the safety and smoothness of communication and power in case of fire

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