To provide a technology capable of supplying object gas to a demand destination without excessively increasing the burden of a compression stage in a compressor unit, even in a case where a generation amount of target gas is small.SOLUTION: The present application discloses a control method for a compressor unit that is installed in a ship and compresses target gas which is a boil-off gas sucked from an LNG storage tank of the ship. The control method comprises: opening a bypass valve when the target gas in a storage tank connection flow path connected to the LNG storage tank is determined to be in a predetermined low pressure state during driving of the compressor unit; and returning the target gas to the storage tank connection flow path via a bypass line.SELECTED DRAWING: Figure 1

    【課題】対象ガスの発生量が少ないときにおいても、圧縮機ユニットの圧縮ステージの負荷を過度に大きくすることなく、対象ガスを需要先に供給する技術を提供することである。【解決手段】本出願は、船舶内に設置され、前記船舶のLNG貯槽から吸い込んだボイルオフガスである対象ガスを圧縮する圧縮機ユニットの制御方法を開示する。制御方法は、前記圧縮機ユニットの駆動時において、LNG貯槽に接続された貯槽接続流路における対象ガスが所定の低圧状態と判断されるとバイパス弁を開放し、バイパスラインを介して対象ガスを貯槽接続流路に戻す。【選択図】図1


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    Title :

    CONTROL METHOD FOR COMPRESSOR UNIT, COMPRESSOR UNIT, AND COMPRESSION STAGE


    Additional title:

    圧縮機ユニットの制御方法、圧縮機ユニット及び圧縮ステージ


    Contributors:

    Publication date :

    2021-02-15


    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 / F02M Zuführen von Brennstoff-Luft-Gemischen oder deren Bestandteilen bei Brennkraftmaschinen allgemein , SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF / F04B Verdrängerkraft- und Verdrängerarbeitsmaschinen für Flüssigkeiten , POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS




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