Steam-water separator

The invention relates to a steam-water separator, which solves the problem that when a separator of a current nuclear power station set is adopted to complete steam-water separation of circulating steam, the steam-water separation efficiency of the separator is low and water draining is difficult due to an inverse differential pressure opposite to a liquid drop gravity direction caused by a high static pressure at separation plate bottoms; the steam-water separator comprises a groove body, a cover plate, and a plurality of separation plates; the plurality of separation plates are vertically disposed on an upper surface of a bottom plate of the groove body; the cover plate is covered at the upper ends of the plurality of separation plates; the separator also comprises a plurality of water manifolds, and a plurality of end caps with a number equal to the number of the water manifolds; each water manifold has a cylindrical structure; the bottom of each water manifold is connected with one end cap; each through hole on the bottom plate of the groove body is communicated with one water manifold, and the upper end of the water manifold is communicated with each corresponding through hole; facing side walls of each water manifold are provided with two draining through holes, and the two draining through holes are disposed just facing each other. The invention is used for steam-water separation.