Liquefied natural gas transfer pipe for supplying fuel of ship engine

Abstract

The present invention discloses a liquefied natural gas transfer pipe for supplying fuel of a ship engine. The transfer pipe comprises: an inner pipe for forming a flow path in which liquefied natural gas moves; a heat-insulating part for encompassing the outer peripheral surface of the inner pipe; an outer pipe for encompassing the heat-insulating part so that the inner peripheral surface thereof is spaced a predetermined interval from the outer peripheral surface of the heat-insulating part, thereby enabling an air gap to be formed; and an interval-maintaining means provided on the heat-insulating part and the outer pipe so as to separate the outer peripheral surface of the heat-insulating part and the inner peripheral surface of the outer pipe and maintain an interval therebetween, wherein the heat-insulating part has independent unit heat-insulating members, which have hollow portions and are stacked in a radial direction around the outer peripheral surface of the inner pipe, and the unit heat-insulating members, having the same diameter and being stacked in the longitudinal direction of the inner pipe, are continuously joined so that independent contact air gaps are formed between the stacked unit heat-insulating members.

Description

technical field [0001] The present invention relates to a liquefied natural gas delivery pipe, and more specifically, to a liquefied natural gas delivery pipe capable of reducing leakage of liquefied natural gas, pressure changes due to temperature, and damage caused by impacts applied from the outside. Background technique [0002] With the rapid development of industry, the use of coal, petroleum, etc. has decreased, and the use of liquefied petroleum gas (LPG: liquefied petroleum gas) and liquefied natural gas (LNG: liquefied natural gas), which are called clean fuels, has increased sharply. Such LNG is supplied from a gas input port to various industrial parks and districts using a gas supply pipe and a control system for controlling gas supplied through the gas supply pipe. [0003] In connection with this, as the use of liquefied natural gas as an energy source increases, efficient transportation schemes capable of transporting liquefied natural gas in large quantities...

AI Technical Summary

Problems solved by technology

[0015] In the conventional inner tube maintenance device described above, since the elastic fins are made of stainless steel, and the load of the inner tube and the gas flowing in the inner tube continues to act only in one direction, the deformed state on the side where the load acts continues, thereby Difficulty getting the inner tube centered on the outer tube

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