Small -size high -pressure section buoy buoyancy adjustment mechanism

The utility model relates to a small -size high -pressure section buoy buoyancy adjustment mechanism, it mainly comprises plunger pump, oily bag, three way connection, adapter and end cap, and plunger pump and oily bag pass through on the clamping ring installs section buoy end cover, and the static seal adopts O type circle sealed, and the movive seal adopts star type sealing washer sealed. The plunger pump mainly comprises motor, reduction gear, stopper, ball screw, plunger head, pneumatic cylinder, support frame, three way connection, pressure sensor, displacement sensor, upper and lower limit switch etc. Connect through three way connection between oil bag, plunger pump and the pressure sensor, three way connection's the other end is equipped with pressure sensor, and pressure sensor is used for detecting the pressure of oily bag, the position indirect measurement oil bag inside oil mass of displacement sensor through detecting plunger head. The utility model discloses it is sealed reliable, can the auto