The present invention relates to a system and a method for supplying a fuel in a liquefied natural gas fueled ship to which an engine using liquefied natural gas as a fuel is applied, wherein a pump and a regasification facility are used to supply a liquefied natural gas fuel, without the aid of a compressor, in compliance with fuel supply conditions of the engine. A system for supplying a fuel in a liquefied natural gas fueled ship according to the present invention comprises: an Otto cycle engine using liquefied natural gas as a fuel and operating according to an Otto cycle; a high-pressure pump for compressing liquefied natural gas which has been discharged from a storage tank; a gasifier for gasifying the liquefied natural gas which has been compressed by the high-pressure pump; an expansion valve for expanding the natural gas which has been gasified by the gasifier; and a gas-liquid separator for separating gas and liquid from a gas-liquid mixture formed by the expansion valve, wherein the liquid separated in the gas-liquid separator is recovered into a storage tank, the gas separated in the gas-liquid separator is supplied as a fuel for the Otto cycle engine, thereby adjusting the methane number of a natural gas fuel supplied to the Otto cycle engine.

    La présente invention concerne un système et un procédé destinés à alimenter en carburant un navire alimenté en gaz naturel liquéfié équipé d'un moteur utilisant du gaz naturel liquéfié comme carburant, une pompe et une installation de regazéification étant mises en œuvre pour l'alimentation en carburant gazeux naturel liquéfié, sans l'aide d'un compresseur, conformément aux conditions d'alimentation en carburant du moteur. Un système destiné à alimenter en carburant un navire alimenté au gaz naturel liquéfié selon la présente invention comprend : un moteur à cycle Beau de Rochas mettant en œuvre du gaz naturel liquéfié comme carburant et fonctionnant selon un cycle Beau de Rochas ; une pompe haute pression destinée à comprimer le gaz naturel liquéfié en provenance d'un réservoir de stockage ; un gazéifieur destiné à gazéifier le gaz naturel liquéfié qui a été comprimé par la pompe haute pression ; un détendeur destiné à détendre le gaz naturel qui a été gazéifié par le gazéifieur ; et un séparateur gaz-liquide destiné à séparer le gaz et le liquide d'un mélange gaz-liquide formé par le détendeur, le liquide séparé dans le séparateur gaz-liquide étant récupéré dans un réservoir de stockage, le gaz séparé dans le séparateur gaz-liquide étant alimenté en tant que carburant au moteur à cycle Beau de Rochas, ce qui permet de régler l'indice de méthane d'un carburant gazeux naturel alimenté au moteur à cycle Beau de Rochas.

    본 발명은 액화천연가스를 연료로 하는 엔진이 적용된 선박에서, 컴프레서(Compressor)를 활용하지 않고 펌프와 재기화 설비를 이용하여 엔진의 연료 공급 조건에 맞추어 액화천연가스 연료를 공급할 수 있도록 하는 액화천연가스 연료 선박의 연료 공급 시스템 및 방법에 관한 것이다. 본 발명에 따른 액화천연가스 연료 선박의 연료 공급 시스템은, 액화천연가스를 연료로 하며 오토 사이클(Otto Cycle)에 따라 작동하는 오토 사이클 엔진; 저장탱크로부터 배출된 액화천연가스를 압축하는 고압펌프; 상기 고압펌프에 의해 압축된 액화천연가스를 기화시키는 기화기; 상기 기화기에서 기화된 천연가스를 단열팽창시키는 팽창밸브; 및 상기 팽창밸브에 의해 형성된 기액혼합물을 기액분리하는 기액분리기;를 포함하여, 상기 기액분리기에서 분리된 액체는 상기 저장탱크로 회수하고, 상기 기액분리기에서 분리된 기체는 상기 오토 사이클 엔진의 연료로 공급하여, 상기 오토 사이클 엔진으로 공급되는 천연가스 연료의 메탄가를 조절하는 것을 특징으로 한다.


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    Title :

    SYSTEM AND METHOD FOR SUPPLYING FUEL IN LIQUEFIED NATURAL GAS FUELED SHIP


    Additional title:

    SYSTÈME ET PROCÉDÉ D'ALIMENTATION EN CARBURANT D'UN NAVIRE ALIMENTÉ EN GAZ NATUREL LIQUÉFIÉ
    액화천연가스 연료 선박의 연료 공급 시스템 및 방법


    Contributors:
    NAM BYUNG TAK (author) / LEE WON CHAN (author) / JUNG IN DON (author)

    Publication date :

    2018-08-02


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING / B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS / F02M Zuführen von Brennstoff-Luft-Gemischen oder deren Bestandteilen bei Brennkraftmaschinen allgemein , SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF / F17C Behälter zum Aufnehmen oder Speichern verdichteter, verflüssigter oder verfestigter Gase , VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES



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