FUEL CELL SYSTEM AND FUEL CELL SHIP

• Main Authors: HIRAIWA TAKUYA, YUKIZANE FUMIAKI, NISHIMATSU SAKI, MORIOKA YASUO, HAIBA TERUYOSHI, MARUYAMA TAKEHIRO
• Format: Patent
• Language: English; Japanese
• Published: 16.01.2020
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

To provide a technology of enabling a fuel cell system and a fuel cell ship comprising the same to safely and securely stop supply of fuel gas to a fuel cell device at the time of operation stop and prevent performance reduction caused by supplying air to the fuel cell device at the time of actuation.SOLUTION: A fuel cell system comprises: an upstream cutoff valve 11A and a downstream cutoff valve 11B provided in series on a supply path 10 to be capable of cutting off the supply path 10; a bleed valve 21 connected to a space 10B formed between the upstream cutoff valve 11A and downstream cutoff valve 11B on the supply path 10 to be capable of opening the space 10B to the outside; and valve control means 60 for controlling actuation of the bleed valve 21 in a form of closing the bleed valve 21 at the time of supplying fuel gas G1 and opening the bleed valve 21 at the time of stopping supply of fuel gas G1 and executing purge processing of supplying purge gas PG to the space 10B before starting supply of fuel gas G1 to purge the space 10B.SELECTED DRAWING: Figure 1 【課題】燃料電池システム及びそれを備えた燃料電池船において、運転停止時に安全且つ確実に燃料電池装置への燃料ガスの供給を停止しながら、起動時に燃料電池装置への空気の供給に起因する性能低下を防止することができる技術を提供する。【解決手段】供給路１０に直列状態で設けられて当該供給路１０を遮断可能な上流側遮断弁１１Ａ及び下流側遮断弁１１Ｂを備え、供給路１０における上流側遮断弁１１Ａと下流側遮断弁１１Ｂとの間に形成される空間１０Ｂに接続されて当該空間１０Ｂを外部に開放可能なブリード弁２１を備え、弁制御手段６０が、燃料ガスＧ１の供給時にブリード弁２１を閉弁させ、燃料ガスＧ１の供給停止時にブリード弁２１を開弁させる形態でブリード弁２１の作動を制御すると共に、燃料ガスＧ１の供給開始前に空間１０Ｂに対してパージガスＰＧを供給して当該空間１０Ｂをパージするパージ処理を実行する。【選択図】図１