| 摘要 |
<p>PURPOSE: A flow meter for the underground water is provided to prevent a water pumping pipe from twisting to prevent a packing from becoming damaged due to pressure raise by alleviating the shock with a linear guide orifice at the time of initial operation of a pump. CONSTITUTION: A flow meter for the underground water comprises a linear guide orifice(200). The linear guide orifice is a liner pipe and comprises a measuring pipe(100). The linear guide orifice is formed so that the inlet of the orifice is connected with the outlet of the water pumping pipe(300). A flow meter(110) for measuring the flow rate of the water flowing into the outlet from the inlet is installed in the measuring pipe. The linear guide orifice guides the linear movement of the water between the inlet of the measuring pipe and the inlet of the flow meter. The linear guide orifice comprises a body and a linear guide hole.</p> |
