DEVICE FOR APPLICATION OF A VARNISH COATING ON THE SURFACE OF HEAT-FUEL ELEMENTS (FUELS) WITH SHELLS OF ZIRCONIUM ALLOYS BEFORE EQUIPPING THEM INTO THE HEAT-FUEL-ASSEMBLY (CLEAR)

摘要

1. A device for applying a varnish coating on the surface of fuel elements (fuel elements) with cladding of zirconium alloys, containing a varnish application chamber and a drying chamber, characterized in that these chambers have coaxial channels for the passage of the fuel element, and the device is equipped with drives for longitudinal movement of the fuel elements, the lacquer application chamber is connected to the lacquer supply means and is made in the form of a container with an elastic capillary-porous element located in it and having a channel for the passage of fuel elements. 2. The device according to claim 1, characterized in that the elastic capillary-porous element is installed inside the sleeve to form a cartridge installed inside the container of the varnish application chamber to form a space between the walls of the container and the sleeve, connected to the lacquer supply means and communicating with the channel for the passage of the fuel element by openings made in the bushing. 3. The device according to claim 1, characterized in that the lacquer supply means is a vessel made with the possibility of creating an overpressure in it with compressed air. The device according to claim 1, characterized in that the drying chamber is made in the form of a cylindrical shell with a spiral heating element wound around it, having a swirler at the inlet of the heated gas stream. The device according to claim 1, characterized in that the drives for the longitudinal movement of the fuel elements are equipped with mechanisms that ensure the rotation of the fuel elements around their own axis. The device according to claim 1, characterized in that a centering device is installed in front of the varnish application chamber, including an annular base that can freely rotate, with installed on it