PROBLEM TO BE SOLVED: To inhibit damage of a heat exchanger of a liquefier and supply a stable amount of a fuel gas to an engine even if rapid engine load fluctuation occurs when a boil off gas evaporated from a liquid gas is supplied to the engine as the fuel gas.SOLUTION: A fuel gas supply system supplies a fuel gas to an engine, and includes: a tank which stores a liquid gas; a compression device which compresses and sends a boil off gas evaporated from the liquid gas to supply a part of the boil off gas to the engine as the fuel gas; and a liquefier which liquefies the part of the boil off gas compressed and sent by the compression device to return the part of the boil off gas to the tank. The liquefier includes: a heat exchanger which cools the boil off gas flowing through the liquefier; and a bypass pipeline which connects an upstream side portion with a downstream side portion of a pipeline connected to the heat exchanger and causes the boil off gas to flow bypassing the heat exchanger.SELECTED DRAWING: Figure 1

    【課題】液化ガスから気化したボイルオフガスを燃料ガスとしてエンジンに供給するとき、急激なエンジンの負荷変動が生じても、液化装置の熱交換器の損傷を抑制し、安定した量の燃料ガスをエンジンに供給する。【解決手段】エンジンに燃料ガスを供給する燃料ガス供給システムは、液化ガスを貯留するタンクと、前記液化ガスから気化したボイルオフガスを、前記ボイルオフガスの一部をエンジンに燃料ガスとして供給するために、圧縮し送出する圧縮装置と、前記圧縮装置で圧縮されて送出されたボイルオフガスの一部を液化して前記タンクに戻す液化装置と、を備える。前記液化装置は、前記液化装置に流れるボイルオフガスを冷却する熱交換器と、前記熱交換器に接続された配管の上流側の部分と下流側の部分とを接続し、前記熱交換器を迂回してボイルオフガスを流すバイパス配管と、を含む。【選択図】 図1


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    Title :

    FUEL GAS SUPPLY SYSTEM, SHIP, AND FUEL GAS SUPPLY METHOD


    Additional title:

    燃料ガス供給システム、船舶、及び燃料ガス供給方法


    Contributors:

    Publication date :

    2018-05-10


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

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



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