PROBLEM TO BE SOLVED: To provide a liquefied gas carrying vessel capable of setting a gas pressure of the downstream side of a compressor in a required range even when the load of an engine increases rapidly.SOLUTION: An LNG (liquefied natural gas) carrying vessel comprises: a tank for storing a liquefied gas; a compressor having variable discharge amount; an engine capable of using a gas as a fuel; a vaporized gas line guiding to the compressor, a gas in which the liquefied gas vaporizes naturally in the tank; a compressed gas supply line guiding the gas compressed by the compressor to the engine; a controller controlling the discharge amount of the compressor; and an input unit for switching a control mode of the controller to a steady control mode and a nonsteady control mode. The controller controls the discharge amount of the compressor when in the steady control mode so that the gas pressure of the compressed gas supply line becomes a first set pressure, and controls the discharge amount of the compressor when in the nonsteady control mode so that the gas pressure of the above compressed gas supply line becomes a second set pressure higher than the first one.SELECTED DRAWING: Figure 4

    【課題】エンジンの負荷が急激に上昇したときでも、圧縮機下流側のガス圧を要求範囲内に収める液化ガス運搬船を提供する。【解決手段】LNG運搬船は、液化ガスを貯蔵するタンクと、吐出量が可変な圧縮機と、燃料としてガスを使用することができるエンジンと、前記タンク内で前記液化ガスが自然気化したガスを前記圧縮機に導く気化ガスラインと、前記圧縮機により圧縮されたガスを前記エンジンに導く圧縮ガス供給ラインと、前記圧縮機の吐出量を制御する制御装置と、前記制御装置の制御モードを定常制御モードと非定常制御モードとの間で切り換えるための入力装置を備え、前記制御装置は、前記制御モードが前記定常制御モードにあるときは、前記圧縮ガス供給ラインのガス圧が第1設定圧になるように前記圧縮機の吐出量を制御し、前記制御モードが前記非定常制御モードにあるときは、前記圧縮ガス供給ラインのガス圧が前記第1設定圧より高い第2設定圧になるように前記圧縮機の吐出量を制御する。【選択図】図4


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    Title :

    LIQUEFIED GAS CARRYING VESSEL


    Additional title:

    液化ガス運搬船


    Contributors:

    Publication date :

    2016-07-11


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS / B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING / B63J Hilfsanlagen auf Schiffen , AUXILIARIES ON VESSELS / 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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