| 摘要 |
<p>Depth control apparatus for seismic streamers, comprising a central unit (10) adapted for inserted mounting in the streamer (11, 12) substantially in axial alignement with the streamer, a housing (20) which can rotate about the central unit (10) and carries at least one control wing (7A, B) being angularly adjustable about a transverse axis (7) adapted to be substantially horizontal in operative position, and an electric motor (6) for adjusting the angle of the control wing(s) (7A, B) about the transverse axis (7). The motor (6) is located in the central unit (10) and is adapted to have its current supply (11A) through the streamer (11, 12). The control wing(s) (7A, B) is so arranged on the housing (20) that the transverse axis (7) in operative position runs underneath the central unit (10). A transmission mechanism (6A, 6B, 8, 1, 3A, 3, 13, 13A, 17A, 17) for the angular adjustment of the control wing(s) (7A, B) by means of the motor (6), comprises a slide member (3) which can be moved in the axial direction of the central unit and preferably surrounds the central unit (10).</p> |
