Emission-free power supply device with leak-testable fuel gas supply path for fuel cells

摘要

Emission-free power supply device (1), wherein a fuel gas tank (4) via a fuel gas supply path (5) fuel cell (6) of the power supply device (1) supplied with a fuel gas, wherein in the fuel gas supply path (5) at least one shut-off valve (36; 37; Setting the fuel gas supply of the fuel cell (6) is provided; wherein the fuel tank (4), the fuel gas supply path (5) and the fuel cells (6) are contained in a negative pressure chamber (2) of the zero emission power supply device (1), the fuel gas supply path (5) including at least one leak check port valve (10) for monitoring the leak tightness of the Fuel gas supply path (5); wherein a test gas with open leak test connection valve (10) from a Prüfgasbehälter to the fuel gas supply path (5) with an adjustable Prüfgasdruck for a certain period of time can be applied and after closing the Dichtheitsprüfanschlussventils (10) a pressure curve of the test gas in the fuel gas supply path (5) by a pressure measuring device ( 11) is measurable; and wherein the test gas container, the pressure measuring device (11), an evaluation unit (12) and a test control device in the power supply device (1) in a to the leak test connection valve (10) of the power supply device (1) connectable separate tester (14) are included, which by Pressure measuring device (11) measured pressure profile of the test gas for monitoring a tightness of the fuel gas supply path (5) by the evaluation unit (12) is evaluated.