| 摘要 |
PURPOSE:To inspect a leak in piping easily by connecting a reservoir tank to a pump, flowmeter, and feed liquid pipe by a communication duct through a valve, and installing a duct which returns to the communication duct through a valve. CONSTITUTION:The oil tank 2 buried in the ground is connected to the fed oil pump 8 and flowmeter 14 through the communication pipe 5 having a check valve 3 and a valve Va, and a feed oil is linked atop of a hose 16. The return tube Rp having a valve Vb communicates with the communication tube 5 from an oil transportation tube 7'. When a leak is inspected, the valve Va is closed and the valve Vb is opened; and the pump 9 is driven while the nozzle 17 is detached from a case 18. The pressure in the oil transportation tube 7 rises and is transmitted to the communication pipe 5 through the hose 16 and return tube Rp. When the metered value of the flowmeter 14 is more than the expansion of the hose 16, it is evident that there is a leak in the communication tube 5. |
