Offshore wind pneumatic suspension vertical axis sea water desalination system

Abstract

The invention discloses an offshore wind pneumatic suspension vertical axis sea water desalination system. The offshore wind pneumatic suspension vertical axis sea water desalination system comprisesa vertical axis wind turbine, a compression air energy storage device, an air flotation damping device and a sea water desalination device. The vertical axis wind turbine adopts multiple layers of paddles for restraining capsizing moment, under the air flotation state of a fan rotating body, the wind energy is efficiently captured, the air flotation damping device regulates the friction damping between the fan rotating body and a tower under the high-pressure gas effect, constant-power control of the rated wind speed of the fan is ensured, according to the captured power, fresh water needs, compression power and high-pressure pump power, a high-pressure pump, a compressor and a reverse osmosis membrance assembly are switched, under the coordinated control of electromagnetic torque of a permanent magnet generator, the high-pressure pump and the compressor, in combination with mixed energy storage of the compressed gas, a high-pressure water tank and a storage battery, fluctuation wind energy is stabilized, wind energy efficient use and sea water desalination efficiency improving are achieved, and through the effective implementation of the system, true functionization of sea wind power and sea water desalination can be greatly promoted.

Description

technical field [0001] The invention relates to a wind-powered seawater desalination system, in particular to an offshore wind-powered aerodynamic suspension vertical-axis seawater desalination system applied to solve the shortage of fresh water resources, and belongs to the field of wind-electromagnetic suspension. Background technique [0002] With the worsening of water shortage and energy crisis, the seawater desalination system powered by new energy has attracted more and more attention from all over the world. Wind power resources have a large capacity and are strictly non-polluting. They are especially suitable for solving remote islands without grid access. Electric energy and fresh water resources seriously affect the quality of life of island residents. However, wind resources and seawater resources are abundant. The development of seawater desalination based on wind energy is the solution to water resources. Deficiency is an effective means to improve the quality ...

AI Technical Summary

Problems solved by technology

However, traditional wind power generation is mostly a horizontal-axis wind power generation system, and its energy interaction with seawater desalination devices adopts a wind-machine-electricity coupling energy supply structure. There are many energy conversion links, and the efficiency of wind energy utilization and seawater desalination is generally low. Seawater desalination efficiency is severely restricted due to high wind energy and volatility, especially for reverse osmosis membrane seawater desalination, which is not suitable for frequent changes in working conditions, frequent fluctuations in wind energy seriously affect seawater desalination efficiency and membrane component life aging

At present, most of the wind turbines in the wind-powered seawater desalination system use horizontal-axis wind turbines. The power generated by the wind turbines fluctuates greatly, and the failure rate of the horizontal-axis yaw windward device is high, which undoubtedly increases the cost of seawater desalination, and the desalination pressure of seawater desalination membrane modules Most of the control adopts a simple shutdown structure. Although battery energy storage is also used to stabilize wind energy fluctuations, frequent charging and discharging of electrodes will easily lead to a reduction in battery life and increase desalination costs. Therefore, it is necessary to study a method that can reduce wind energy conversion. The wind-driven seawater desalination system with coexistence of energy storage methods will really promote the real practicality of the wind-driven seawater desalination system

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