A phase change buoyancy adjustment device with cold and hot water circulation control

Abstract

The invention provides a phase change buoyancy regulating device controlled by cold and hot water circulation. The present invention includes: a buoyancy generating unit for generating buoyancy through the volume change of the phase change material and a phase change temperature control unit for adjusting the temperature of the phase change material, and the phase change temperature control unit includes an internal switch placed inside the buoyancy generating unit The thermal system and the cooling system and heating system connected to the internal heat exchange system and placed outside the buoyancy generating unit, the cooling system and the heating system share the internal heat exchange system to complete the cooling water cycle or heating water cycle. The invention has a sufficient heat exchange area, the heating system and the cooling system share the internal heat exchange device, the system structure is simplified, and the volume ratio of the paraffin in the phase change container is enlarged. The cooling water is cooled by exchanging heat with the external environment, the system does not need to have its own cooling water tank, and it also solves the problem in the prior art that the cooling pipe is easily blocked by impurities when directly using seawater.

Description

technical field [0001] The invention relates to a buoyancy regulating device, in particular to a phase change buoyancy regulating device controlled by cold and hot water circulation. Background technique [0002] The buoyancy adjustment system is an important subsystem of the underwater submersible. It can change the operating attitude of the submersible in the water by adjusting the net buoyancy, and realize ascent, descent and suspension. However, the common temperature phase change buoyancy adjustment system uses a piston to provide displacement to generate buoyancy, and the buoyancy can be adjusted by using the temperature difference of the ocean thermocline. In this way, there is relative sliding between the piston and the sleeve, and the sleeve is corroded and the gap is too large, which may lead to the failure of the buoyancy adjustment system and endanger the safety of the submersible. For example, a phase-change buoyancy engine whose temperature is actively control...

AI Technical Summary

Problems solved by technology

It discloses that cooling and heating are two separate systems. Direct heating of the heating wire may easily lead to excessive local temperature and generate paraffin vapor, thereby affecting buoyancy and adjustment accuracy. At the same time, due to the poor thermal conductivity of paraffin, the above-mentioned buoyancy adjustment system adopts pure electric heating. The response speed of the method is slow, and the buoyancy adjustment speed is slow, which is not suitable for high-mobility submersibles

The publication number is CN109751179SA, a phase-change buoyancy engine device. The heating device and the cooling device are placed inside the buoyancy generating unit, and the seawater is directly used for cooling. However, due to the excessive plankton and sediment in the sea, the cooling pipe is easily damaged. These impurities clog

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