| 摘要 |
PURPOSE:To have direct measurement of the flow rate, on the basis of the differential pressure at the pressure takeout holes to sense off the static pressures of the fluid on the diffuser's inner and outer sides installed on the internal circumferential surface and end face of the diffuser, as well as to make this flow measuring device and pump in a single body. CONSTITUTION:No.1 pressure takeout hole 18 is open in the direction across normally the flow line of the fluid inside the diffuser 6 so as to sense off the static pressure of the fluid flowing there. No.2 pressure takeout hole 19 is open in the direction across normally the end face of a sensor ring 6b, i.e. No.1 pressure takeout hole 18 so as to sense off the static pressure outside the diffuser 6. A calculator 22 is to calculate the flow rate on the basis of the differential pressure at No.1 and No.2 pressure takeout holes 18, 19. Thereby, the flow measuring device can be fixed to the pump as in a single body and thus the flow rate of the fluid flowing through the pump can be measured directly to provide measurements with high reliability. |
