| 摘要 |
<P>PROBLEM TO BE SOLVED: To attain both of the improvement of flow rate measurement accuracy of fuel gas and also the improvement of energy efficiency. <P>SOLUTION: A gas flow rate measurement device 3 for measuring the flow rate of fuel gas to be supplied to a gas engine 2 includes: a gas booster 24 for boosting the pressure of the fuel gas to be supplied from a fuel gas supply source ; a volumetric flow meter 27 for measuring the flow rate of the fuel gas boosted by the gas booster 24; pressure adjustment valves 25, 26 arranged at the downstream side of the volumetric flow meter 27, for adjusting the supply pressure of the fuel gas to be supplied to the gas engine 2; and a variable throttle valve 28 arranged between the volumetric flow meter 27 and the pressure adjustment valves 25, 26 and having a throttle part to suppress the pulsation of the fuel gas. The opening degree of the variable throttle valve 28 is set by using the change ratio of an integrated flow rate value in correlation between the flow rate amplitude value of the fuel gas depending on the opening degree and an integrated flow rate value per unit time of the fuel gas to be measured by the volumetric flow meter 27. <P>COPYRIGHT: (C)2013,JPO&INPIT |
