Seawater desalination system and water electrolysis hydrogen production and seawater desalination coupling system

The utility model discloses a seawater desalination system and a water electrolysis hydrogen production and seawater desalination coupling system, and belongs to the field of seawater desalination. The seawater desalination system includes: a plurality of evaporation chambers; the evaporation chamber comprises a cavity, a heat exchange pipe and a sprayer, the heat exchange pipe and the sprayer are located in the cavity, the cavity is provided with a steam outlet, a seawater inlet and a saline water outlet, and the heat exchange pipe comprises a steam inlet and a fresh water outlet which extend out of the cavity; the sprayers are communicated with the seawater inlets, the sprayers are arranged towards the heat exchange pipes, and the seawater inlets of the evaporation chambers are suitable for being connected with a seawater source; the steam inlet of the first evaporation chamber is suitable for being connected with a steam discharge outlet of a water electrolysis hydrogen production system, and the steam out