Profile motion platform driven by ocean temperature difference and its lifting control method

Abstract

The invention relates to a profile motion platform based on ocean temperature difference energy driving and a lifting control method thereof, and belongs to the technical field of ocean detection. Theprofile motion platform comprises a sealed cavity and a buoyancy control loop. The buoyancy control loop comprises a liquid storage pump, an energy accumulator, an outer liquid accumulator and an inner liquid accumulator; an overflow oil way is connected between the energy accumulator and the inner liquid accumulator in parallel in a bypass mode, an overflow valve is connected to the overflow oilway in series, an adjusting oil way is connected between the outer liquid accumulator and the inner liquid accumulator in parallel in a bypass mode, and a hydraulic pump is connected to the adjustingoil way in series. The lifting control method thereof comprises the following steps that lifting is controlled, oil pressure at an oil inlet of the overflow oil way drives the overflow valve to be connected, so that after hydraulic oil enters the inner liquid storage device through the overflow oil way, the hydraulic pump is controlled to force the hydraulic oil in the inner liquid storage deviceto enter the outer liquid storage device along the adjusting oil way, and the displacement of the outer liquid storage device is increased, so that the profile motion platform floats upwards. The platform can float upwards to be recycled when an oil way is blocked, and can be widely applied to the field of ocean exploration.

Description

technical field [0001] The invention relates to an ocean detection equipment, in particular to an ocean profile motion platform driven based on ocean temperature difference and a lifting control method thereof. Background technique [0002] The ocean profile motion platform is an important tool for people to study and detect the ocean, usually including a guide cable, a floating body fixed on the upper end of the guide cable and an anchor block on the lower end, so that the guide cable is generally arranged vertically in the ocean , and moving equipment that can reciprocate up and down along the guiding cables; there are also some platforms that only include moving equipment without using guiding cables. [0003] In the patent literature with the publication number CN105952691A, a temperature difference energy driven ocean profile motion system is disclosed, which includes a sealed cavity and a buoyancy control circuit; wherein, along the direction of travel of the hydraulic...

AI Technical Summary

Problems solved by technology

[0005] (1) The pipeline between the accumulator and the inner oil bag is equipped with conduction control valves, outer oil bags, check valves and other equipment, and the oil circuit is the longest, which is prone to blockage and cause excessive pressure in this part of the oil circuit. Large and damaged components, and even the problem that it cannot float smoothly and is difficult to recycle;

[0006] (2) Depth control cannot be realized;

[0007] (3) The control performance of the entire system is unstable because the liquid storage volume of the inner and outer oil pockets changes with the water depth;

[0008] (4) It is impossible to rely on pressure to realize the movement of hydraulic oil from the outer oil bag to the inner oil bag and from the inner oil bag to the oil bag at the phase change, resulting in high complexity and high energy consumption of the entire hydraulic system

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