RESERVOIR HATCH CLOSURE Russian patent published in 2005 - IPC

FIELD: transportation of radioactive and toxic materials.

SUBSTANCE: proposed closure contains upper and lower flanges rigidly connected by axle, seal, spring-vacuum device and floating disk. Spring thrust ring found on outer belt of floating disk gets into ring slot of hatch. Said thrust ring has conical inner surface in contact with conical surface of floating disk, and end face surface in contact with seal placed in ring slot between upper flange and floating disk. Spring thrust ring is furnished with at least three tenons getting with clearance into mating holes of floating disk. Two longitudinal cylindrical holes are made in axle, said holes being conjugated with conical surface. Conical shutoff valve and pressure spring are fitted in larger diameter upper hole. Lower hole of smaller diameter is intersected with cross through hole made in lower part of axle. Through hole of diameter smaller than inner diameter of pressure spring is made along vertical axis of symmetry of upper flange. Removable vacuum suction head and permanent magnet with ribbed support surface secured on vacuum suction head by means of spring from its inner side are installed on central part of upper flange.

EFFECT: prevention of unauthorized access to radioactive or toxic materials carried in or temporary stored in containers with proposed closure, improved sealing of containers.

2 cl, 3 dwg