发明名称 |
Vortex chamber mud pulser |
摘要 |
<p>A vortex chamber fluid pulser selectively produces pressure pulses in fluid flowing therethrough by the alternating insertion and retraction of a flow-disrupting tab into and out of an annular vortex chamber having an inlet and a pair of opposed axial outlets. Insertion of the tab disrupts the normally radial flow of fluid through the chamber and outlets causing the flow to become vortical; retraction of the tab causes a second pressure pulse as the flow returns to radial, sending a sequence of pressure pulses capable of carrying encoded signals to a transducer remotely located in the fluid.</p> |
申请公布号 |
AU2659095(A) |
申请公布日期 |
1996.01.04 |
申请号 |
AU19950026590 |
申请日期 |
1995.06.05 |
申请人 |
DEFENSE RESEARCH TECHNOLOGIES, INC. |
发明人 |
ALLEN B HOLMES;FRANK B VANAMAN;TADEUSZ M DRZEWIECKI |
分类号 |
E21B47/18;F15C1/16;G10K15/04 |
主分类号 |
E21B47/18 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|