FIELD: shipbuilding.
SUBSTANCE: invention relates to the technique of developing the ocean, namely to underwater vehicles with variable buoyancy. Device for changing the buoyancy of the underwater vehicle is located in a sealed housing and contains a hydraulic drive pump, a moving working fluid, pipelines, controlled valves and an internal variable-volume receiver, as well as a hydraulic cylinder. Stem of the hydraulic cylinder is movable between the external environment and the internal volume of the hydraulic cylinder, realizing the functions of an external variable volume receiver. Diameter of the rod is smaller than the diameter of the piston, and the piston and sub-piston spaces of the hydraulic cylinder are connected to the hydraulic drive pump and the internal receiver via pipelines and control valves.
EFFECT: ensured possibility of working at both shallow and deep submerged depths.
1 cl, 1 dwg
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