PROBLEM TO BE SOLVED: To efficiently process excess gas while appropriately supplying fuel gas even at occurrence time of sudden load change in a gas fuel supply system for marine engines using LNG as fuel.SOLUTION: A control device 9 of a gas fuel supply system 1, when a pressure PV1, which is detected by a first pressure detector 7, of a fuel gas header 4 is within a prescribed range, controls a pressure control valve 6 so that a downstream portion pressure PV2, which is detected by a second pressure detector 8, of the pressure control valve 6 becomes a first target pressure SV1 and when the pressure PV1, which is detected by the first pressure detector 7, of the fuel gas header 4 is out of the prescribed range, switches over the control of the pressure control valve 6 so as to control the pressure control valve 6 so that a pressure PV1 of the fuel gas header 4 becomes a second target pressure SV2 which is higher than the first target pressure SV1.SELECTED DRAWING: Figure 2
【課題】 LNGを燃料とした舶用エンジンのガス燃料供給システムにおいて急激な負荷変動の発生時にも燃料ガスの適切な供給及び余剰ガスの効率的な処理を行う。【解決手段】 ガス燃料供給システム1の制御装置9は、第1圧力検出器7によって検出される燃料ガスヘッダー4の圧力PV1が所定範囲内にある場合は、第2圧力検出器8によって検出される圧力調整弁6下流部分の圧力PV2が第1目標圧力SV1になるように圧力調整弁6を制御し、第1圧力検出器7によって検出される燃料ガスヘッダー4の圧力PV1が所定範囲外になった場合は、燃料ガスヘッダー4の圧力PV1が第1目標圧力SV1より高い第2目標圧力SV2になるように圧力調整弁6を制御するよう圧力調整弁6の制御を切り換える。【選択図】図2
GAS FUEL SUPPLY SYSTEM AND CONTROL METHOD THEREOF
ガス燃料供給システム及びその制御方法
2016-07-11
Patent
Elektronische Ressource
Japanisch
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 |
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