| 摘要 |
PURPOSE:To eliminate the manhour required for detaching a flange part, and to improve the operation efficiency of a flow rate adjustment, and to reduce the cost by providing a nozzle for fitting a pressure gauge to a sampling pipe nearby a valve for flow rate adjustment. CONSTITUTION:The nozzle 15 for fitting a pressure gauge to the sampling pipe 4 is provided nearby the valve 5 for flow rate adjustment and the nozzle 15 is normally blocked by providing a nozzle lid 16. When a flow rate adjustment is made, the pressure gauge 17 is fitted to the nozzle 15. Then, the flow meter in a detection part measures the total flow rate and flow rates adjusting valves 5 are so adjusted that respective pressure gauges 17 generate the same indication, thereby equalizing flow rates in respective sampling pipes 4 to each other. Consequently, the flange part need not be provided to each sampling pipe and a sampling system is assembled efficiently. Further, the maintenance time of a leak detection system is shortened and the safety of the plant is improved as a result. |
