NON-CONTACT MECHANICAL SEAL SEAL WITH TRANSVERSAL SIDE AND PERFECT SEALING FOR ROTATING MACHINES

摘要

THIS JOINT INCLUDES AN ANNULAR STATOR 2 CONNECTED TO THE CASING 4 AT A LOW DISTANCE FROM THE FLAT AND SMOOTH FACE OF A ROTOR 1 SHIM ON THE SHAFT 3 OF THE MACHINE. STATOR 2 SURROUND THE SHAFT ECCENTRICALLY AND IS PUSHED TOWARDS THE ROTOR BY A HELICOIDAL SPRING 7. THE VERY SMALL INTERVAL BETWEEN THE CIRCULAR FLANGE OF THE STATOR AND THE ROTOR VARIES IN WIDTH IN THE CIRCUMFERENTIAL DIRECTION. THE SPACE SURROUNDED BY THIS RIM IS PRESSURE HIGHER THAN THE SURROUNDING SPACE BY THE HYDRODYNAMIC ACTION OF THE SPEED OF THE ROTOR SURFACE ON THE LIQUID IN THE MACHINE. PART H OF THE INTERVAL CORRESPONDS TO THE MECHANICALLY PERMITTED MINIMUM CLEARANCE AND PART H OF THE INTERVAL IS WIDER.