Vertical vapor chamber of small size low pressure boiler

The utility model relates to a vertical steam dome of a small size low pressure boiler, the utility model relates to the improvement of the structure of the matched steam dome of a small size low pressure boiler for producing steam. The cylindrical body of the utility model is in the shape of a vertical column, the lower half part of the utility model is used for containing water, and the upper half part of the utility model is a steam space. The internal structure of the utility model comprises a drainage pipe, a water outlet pipe for circulating water, a water feeding pipe for a boiler, a steam-water inlet pipe, a steam-water secondary separator, etc., wherein, the steam-water outlet of the steam-water inlet pipe is in the shape of a lampshade, and the steam-water secondary separator is composed of a steam-water separator and a plate evenly distributed with steam holes; besides, the steam-water separator is provided with a stainless steel screen. Compared with a horizontal steam dome, the volume, the weight, the occupation area, the steel consumption, the heat-insulating material consumption, etc. of the utility model are reduced; the utility model can guarantee the stable operation of a boiler, on a basis of guaranteeing steam quality.