PROBLEM TO BE SOLVED: To curb an increase in pressure at a discharge side of a gas compressor when supplying boil-off gas of fuel gas to a propulsion engine of a vessel as fuel gas after compressing the same with the gas compressor.SOLUTION: In order to control a supply amount of boil-off gas supplied by a first gas compressor arranged at a most downstream side among a plurality of gas compressors when fuel supply pressure requested by a propulsion engine is changed, a fuel gas supply system sets: a first command value to control a flow rate of the boil-off gas flowing in a direction opposite to a flow direction of the boil-off gas in a bypass pipe connecting an upstream side and a downstream side of the first gas compressor; and a control command value to control the flow rate of the boil-off gas flowing in the direction opposite to the flow direction of the boil-off gas in the bypass pipe installed on a second gas compressor other than the first gas compressor. The control command value is obtained by adding the first command value, as a weight, to a second command value generated in accordance with a pressure difference between pressure at a discharge side of the second gas compressor and target pressure.SELECTED DRAWING: Figure 1

    【課題】液化ガスのボイルオフガスをガスコンプレッサで加圧して船舶の推進エンジンに燃料ガスとして供給するとき、ガスコンプレッサの吐出側の圧力の上昇を抑制する。【解決手段】推進エンジンが要求する燃料供給圧力が変化した時、前記ガスコンプレッサのうち、最下流に位置する第1ガスコンプレッサが供給する前記ボイルオフガスの供給量を制御するために、前記第1ガスコンプレッサの上流と下流を繋ぐバイパス管内で、前記流れ方向に対して逆流するボイルオフガスの流量を制御する第1指令値を設定する。さらに、前記第1ガスコンプレッサ以外の第2ガスコンプレッサに対して設けられるバイパス管内で、前記流れ方向に対して逆流するボイルオフガスの流量を制御する制御指令値を設定する。前記制御指令値は、前記第2ガスコンプレッサの吐出側の圧力と目標圧力との間の圧力差に応じて生成される第2指令値に、前記第1指令値を重み加算した値である。【選択図】 図1


    Access

    Download


    Export, share and cite



    Title :

    FUEL GAS SUPPLY SYSTEM AND FUEL GAS SUPPLY METHOD


    Additional title:

    燃料ガス供給システム及び燃料ガス供給方法


    Contributors:

    Publication date :

    2017-07-27


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    F02M Zuführen von Brennstoff-Luft-Gemischen oder deren Bestandteilen bei Brennkraftmaschinen allgemein , SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF / B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING / F02B INTERNAL-COMBUSTION PISTON ENGINES , Brennkraftmaschinen mit innerer Verbrennung mit Verdrängerwirkung / F17C Behälter zum Aufnehmen oder Speichern verdichteter, verflüssigter oder verfestigter Gase , VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES



    FUEL SUPPLY SYSTEM AND FUEL SUPPLY METHOD

    HAYASHI HIROYOSHI | European Patent Office | 2019

    Free access

    FUEL SUPPLY SYSTEM, FUEL SUPPLY METHOD, AND AIRCRAFT

    NAKANO KOHEI / OGURI TAKAYUKI / TOMONAGA YUKINOBU et al. | European Patent Office | 2017

    Free access

    FUEL SUPPLY SYSTEM, SHIP, AND FUEL SUPPLY METHOD

    UCHIDA TOSHIHIRO / FURUKAWA MASAYA | European Patent Office | 2019

    Free access

    FUEL SUPPLY SYSTEM SHIP AND FUEL SUPPLY METHOD

    UCHIDA TOSHIHIRO / FURUKAWA MASAYA | European Patent Office | 2018

    Free access

    SHIP FUEL SUPPLY METHOD, FUEL SUPPLY SOURCE SHIP, AND SHIP FUEL SUPPLY SYSTEM

    YOSHIGAMI TSUTOMU / YUJI TSUTOMU | European Patent Office | 2022

    Free access