| 摘要 |
FIELD: machine building. ^ SUBSTANCE: mechanical-draft tower consists of case, of sprinkling device, of liquid-collecting tank and of fan. The case is composed of two parts - of an upper one including a sprinkler and a knock-out drum with whole torch sprayers and of a lower part wherein there is arranged the cooled water collecting tank with a fan mounted on it. Also, the fan is made out of sheet stainless steel. A diffuser is installed into the collecting tank. The diffuser corresponds to a part of the case connected with the fan. The fan is equipped with a plastic working wheel and a multi-speed electric engine. Depending on weather conditions during operation the engine changes output of the tower due to change of air consumption. The sprinkler consists of stacked in layers parallel tubular elements out of thermo-plastic material with a lattice wall. On ends the tubular elements are connected by welding. They have triangle crosswise section. Between each layer of the tubular elements across the tubular elements along each of their ends there is laid a strip out of thermo-plastic material. The strip is welded with tubular elements in points of their contact with the strip. During welding the end sections of the tubular elements and of the strips laid between them are fused thus forming solid end walls of a unit. Cavities of each tubular element and tube space are filled with hollow polymer balls. Diametre of the balls is at 5-10 % bigger, than maximal dimension of a mesh of the lattice wall of the tubular elements. ^ EFFECT: raised efficiency of mechanical-draft tower operation. ^ 3 dwg |
