| 摘要 |
The invention relates to a method and device for formation of circulation of boiler water in evaporative section of steam generator of atomic power plant. Along with natural circulation one forms forced circulation as well through use of kinetic energy of steam flow at throttling it through openings of immersed punched screen and pumping boiler water from under steam blanket upwards to punched screen. The method is realized in steam generator that has a body of barrel type, with heating surfaces pipe bunches placed in it, with placed over those, assembled of separate sheets with openings, immersed hollow screen, at that the openings are arranged as branch pipes the upper ends of which are fixed in the sheets of the screen, and the lower ends are placed lower than the steam blanket under the level of boiler water, and inside the branch pipes throttling steam nozzles are placed concentrically and connected with channels to steam blanket. The invention provides increase of repetition factor of circulation, excludes formation of scale and corrosion of tubes, this increases service life of the steam generator. |
