本实用新型公开了一种海水淡化装置,属于海水淡化技术领域。所述海水淡化装置包括人孔、立柱、海水预热器、蒸发器、冷凝器及热压缩器；人孔包括：法兰盖及法兰,法兰盖与法兰连接；法兰盖包括：第一层及第二层,第一层与第二层连接,第一层为第一耐腐蚀层,第二层为第一加强层。本实用新型海水淡化装置可以达到提高设备耐腐蚀性,延长使用寿命,减少维修次数,增加强度,降低维护成本的目的,从而实现经济性。

The utility model discloses a seawater desalination device, belonging to the technical field of seawater desalination. The seawater desalination device comprises a manhole, an upright post, a seawater preheater, an evaporator, a condenser and a heat compressor; The manhole comprises a flange cover and a flange, wherein the flange cover is connected with the flange; The flange cover comprises a first layer and a second layer, wherein the first layer is connected with the second layer, the first layer is a first corrosion-resistant layer, and the second layer is a first reinforcing layer. The seawater desalination device of the utility model can achieve the purposes of improving the corrosion resistance of the equipment, prolonging the service life, reducing the maintenance times, increasing the strength and reducing the maintenance cost, thereby realizing the economy.