Pumped storage wind energy direct drive seawater desalination integrated system

Abstract

The invention discloses a pumped-storage wind energy direct-driven seawater desalination integrated system. The pretreatment tank is respectively connected with the inlet pipes of the pumped storage unit and the seawater desalination unit; the outlet pipe of the pumped storage unit is connected with the storage tank; the storage tank, the energy conversion device and the seawater desalination unit are coupled and set up; the energy conversion The return pipe of the device is communicated with the pretreatment tank. In the present invention, the seawater desalination unit is jointly driven by the mechanical energy provided by the wind turbine and the mechanical energy provided by the hydraulic turbine to ensure stable freshwater output, and the pumped storage unit and the seawater desalination unit can be reasonably matched according to actual conditions. The invention has the characteristics of simple structure, high energy conversion efficiency, good stability, good reliability, simple operation, low investment and operation cost, wide adaptability and the like, and is suitable for the construction of large-scale wind energy seawater desalination projects.

Description

technical field [0001] The invention belongs to the technical field of seawater or brackish water desalination, and in particular relates to a pumped storage type wind energy directly driven seawater desalination integrated system. Background technique [0002] Desalination of seawater or brackish water is an effective strategic approach to solve the shortage of freshwater resources, and vigorously developing cheap renewable energy and using it in seawater desalination will be an important way to solve the high cost of seawater desalination. The wind energy resources on the sea and islands are very rich, with the characteristics of high wind speed and relatively stable wind speed. Therefore, wind energy is an important energy choice for seawater desalination. At present, there are two main ways of desalination of seawater by wind power: (1) wind power desalination (separate type); (2) wind power directly drives seawater desalination (coupled type). Due to the advancement of...

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Problems solved by technology

However, the above-mentioned devices are all independent operating systems, and each device is equipped with a regulating device and its control system, which is more suitable for a small-scale independent operation mode, and is not suitable for the construction of large-scale seawater desalination projects.

Since large-scale seawater desalination projects often require dozens or even hundreds of wind turbines to operate at the same time, if each wind-powered seawater desalination unit has its own energy storage device and control system, the entire system will be more complicated, and its operability and reliability also poor

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