| 摘要 |
<p>A vortex amplifier (1) functions as a choke valve to control flow in a flow line from, for example, a gas or oil well. The vortex amplifier (1) is arranged in the flow line (2, 3) such that flow passes radially through the vortex amplifier to emerge at an axial port. A control flow is introduced tangentially into the vortex amplifier along a line (4) by a pump (5). The pump (5) is regulated by a transducer (7) responsive to signals generated by the flow in the flow line (3).</p> |
