Buoyancy adjusting device and method

Abstract

The invention provides a buoyancy adjusting device and method, and belongs to the technical field of buoyancy adjusting. The buoyancy adjusting device comprises a water-tight compressive cabin, a buoyancy conversion device arranged in the water-tight compressive cabin, and a power control system; the buoyancy conversion device comprises an outer oil bag and an inner oil bag which are separated inthe vertical direction; the outer oil bag is internally provided with an outer piston, the inner oil bag is internally provided with an inner piston, and the outer piston and the inner piston are connected through a piston rod so that synchronous movement can be achieved; and the outer oil bag and the inner oil bag communicate with a power control system through pipelines so that the hydraulic oilvolume distribution ratio of the outer oil bag and the inner oil bag can be adjusted. According to the buoyancy adjusting device and method, both the outer oil bag and the inner oil bag are of rigidstructures, movement and distribution of hydraulic oil in the outer oil bag and the inner oil bag are changed through constraint of the rigid structures all the time, changing of the shape of the hydraulic oil is approximate to changing of the linear relation of a rigid body in the regular shape, and thus, changing of the center of mass of the buoyancy adjusting device is regular, predictable andcontrollable.

Description

technical field [0001] The invention belongs to the technical field of buoyancy adjustment, and in particular relates to a buoyancy adjustment device and an adjustment method of underwater operation equipment. Background technique [0002] The buoyancy adjustment device can realize the continuous heave and suspension control of itself or the carrier in the deep sea environment. The current buoyancy adjustment devices are mainly divided into dump type, seawater pump type and oil pump soft oil bag type. The load dump type buoyancy adjustment system is for the buoyancy adjustment of deep submersibles. ; The seawater pump type has high requirements on equipment, high cost and high technical difficulty; while the oil pump soft oil capsule type is highly dependent on the carrier and has poor versatility. [0003] Based on the above problems, the prior art (CN206644970U) provides a buoyancy adjustment device, comprising: a housing; The area of ​​one end is smaller than the area o...

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Problems solved by technology

[0004] Based on the above-mentioned background problem, the present invention aims to provide a buoyancy adjustment device, which pushes the outer piston and the inner piston to move through the change of the hydraulic oil volume distribution ratio of the inner and outer rigid oil bladders, thereby adjusting the drainage volume to adjust the buoyancy. The change of the center of mass is regular and has It is beneficial to the predictable control of the state of the center of mass of the system, and solves the defects of poor stability and unstable control of the center of mass in the prior art; another object of the present invention is to provide a buoyancy adjustment method using the above-mentioned buoyancy adjustment device

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