Buoyancy adjustment equipment

The utility model provides a buoyancy adjustment equipment, include, the casing, buoyancy conversion equipment is including installing respectively the two -way cylinder and the oily bag that just communicate each other on the casing, an end area of two -way cylinder's piston is less than the area of the other end, and the little one end and sea water contact of area, oil way control device, control, which includes. A housing. Power device makes the oil between two -way cylinder and the oily bag flow through oil way control device, pressure monitoring device for control buoyancy conversion equipment's pressure and displacement, and trigger power device work. The utility model discloses a two -way cylinder's piston utilizes the area between the both ends poor, can make equipment internal pressure obtain compensating from seawater pressure, makes the pressure differential at two -way oil pump both ends reduce greatly, need not to select for use high -pressure oil pump, to the require greatly reduced of oil pump