Phase-change buoyancy regulating device with hot and cold water circulation control function

Abstract

The invention provides a phase-change buoyancy regulating device with a hot and cold water circulation control function. The phase-change buoyancy regulating device with the hot and cold water circulation control function comprises a buoyancy generation unit and a phase change temperature control unit, wherein the buoyancy generation unit is used for generating buoyancy through volume change of aphase-change material; the phase change temperature control unit is used for adjusting the temperature of the phase-change material; the phase change temperature control unit comprises an internal heat exchanging system and a cooling system and a heating system, wherein the internal heat exchanging system is placed in the buoyancy generation unit; the cooling system and the heating system are connected with the internal heat exchanging system and placed outside the buoyancy generation unit; and the cooling system and the heating system share the internal heat exchanging system to finish cooling water circulation or heating water circulation. The phase-change buoyancy regulating device with the hot and cold water circulation control function has the advantages that sufficient heat exchanging area is realized; and as the heating system and the cooling system share the internal heat exchanging device, the system structure is simplified, and the volume ratio of paraffin wax in a phase-change container is increased; cooling water realizes cooling by using a mode of exchanging heat with an outside environment; the system does not need to be mounted with a cooling water tank; and meanwhile, the problem that a cooling tube is extremely easy to be blocked by impurities during directly using seawater in the prior art is also solved.

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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