Pressure reducing valve having shutoff mechanism
A technology of cut-off mechanism and pressure reducing valve, which is applied in the direction of fluid pressure control, safety valve, balance valve, etc., can solve the problems of complex internal structure, large-scale product and high cost, so as to suppress the increase of cost and realize miniaturization. , the effect of preventing deterioration
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[0030] Hereinafter, an embodiment of the present invention will be described based on the drawings.
[0031] figure 1 It is a schematic configuration diagram of a fuel cell system, and reference numeral 1 denotes a fuel cell stack (fuel cell) that is supplied with hydrogen as a fuel and oxygen as an oxidant to generate electricity. The fuel cell stack 1 is, for example, a solid polymer fuel cell (Polymer Electrolyte Fuel Cell: PEFC), and is a single stack in which a MEA (Membrane Electrode Assembly, membrane electrode assembly) is sandwiched by separators (not shown). made of batteries.
[0032] Hydrogen gas at a predetermined pressure and a predetermined flow rate is supplied to the fuel cell stack 1 from a hydrogen storage tank 2 storing high-pressure hydrogen (a supply source of high-pressure fluid) through a hydrogen supply flow path 3, and at a predetermined pressure through an air supply device (not shown). Oxygen-containing air is supplied to the fuel cell stack 1 at ...
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