Abstract: Evaporators used in radiochemical production designed to evaporate highly active solutions and devices designed to create thin film in the heating chambers. The film former contains a liner in the upper part of the heat exchange tube attached to the spindle of the bellows assembly of the evaporator lid. The liner is provided with a radiation-proof tip that is not wettable by liquid being evaporated. The tip is made of two conjugate cones: the upper back cone and lower right cone, with the lower cone having a cylindrical belt with protrusions on it designed to center the conical tip on the inner surface of the heat exchange tube. A cap is mounted movably on the liner, with grooves on the lower end of the cap along the entire perimeter. The liner attached to the spindle is connected by fins with adjacent liners installed in heat exchange tubes.

Abstract: Evaporators used in radiochemical production designed to evaporate highly active solutions and devices designed to create thin film in the heating chambers. The film former contains a liner in the upper part of the heat exchange tube attached to the spindle of the bellows assembly of the evaporator lid. The liner is provided with a radiation-proof tip that is not wettable by liquid being evaporated. The tip is made of two conjugate cones: the upper back cone and lower right cone, with the lower cone having a cylindrical belt with protrusions on it designed to center the conical tip on the inner surface of the heat exchange tube. A cap is mounted movably on the liner, with grooves on the lower end of the cap along the entire perimeter. The liner attached to the spindle is connected by fins with adjacent liners installed in heat exchange tubes.