Phase change buoyancy engine device based on water bath temperature control

Abstract

The invention discloses a phase change buoyancy engine device based on water bath temperature control. The buoyancy engine device is mainly composed of a buoyancy generating unit, a temperature control system and the like. The buoyancy generating unit is composed of a silica gel film, paraffin, a radial sealing ring, a hoop, a bolt, a nut, an upper cover, an axial sealing ring and a base. The temperature control unit is composed of a Peltier element, a water tank, a temperature sensor, a direct-current power supply, cooling fins, a temperature control switch and a watertight connector. Under the combined action of the microcontroller and the temperature control system, the phase change of the paraffin can be realized by controlling the temperature change of the paraffin, so that the shrinkage or expansion of the volume of the paraffin is controlled, the drainage volume of the device is changed, and the buoyancy of the device is adjusted. The device adjusts the buoyancy by controlling the temperature to realize the volume change of paraffin, has the advantages of low energy consumption and low noise, is simple in working principle, and can be used for designing small and light underwater vehicles.

Description

technical field [0001] The invention relates to an underwater buoyancy engine, in particular to a buoyancy engine device for changing buoyancy based on the principle of paraffin phase transition. Background technique [0002] The buoyancy engine device ensures that the submersible has a relatively stable attitude in a certain water layer by adjusting the net buoyancy of the submersible, so as to overcome the interference of buoyancy changes caused by the pressure deformation of the submersible shell and load operation. Most of the existing deep-sea buoyancy engines use liquid oil pumps to absorb and discharge oil to realize buoyancy adjustment. These devices are heavy in weight, high in energy consumption and loud in noise. The temperature difference energy buoyancy adjustment device captures the temperature difference energy of the ocean thermocline through a heat exchanger, and uses the contraction and expansion principle of the phase change material to adjust the buoyancy...

AI Technical Summary

Problems solved by technology

However, the temperature difference energy buoyancy adjustment device needs a sufficient temperature difference to perform buoyancy adjustment, and can only operate in low latitude and shallow waters

The thermal conductivity of paraffin wax is low, and the buoyancy adjustment is realized by directly heating or cooling the paraffin wax to expand or contract the volume of the device, which has the disadvantages of low heat transfer efficiency and slow response speed.

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