Mechanical Seal Having a Double-Tier Mating Ring

LSU Reference: 0311

Inventors:

Description:
  • An apparatus that enhances the overall performance of mechanical seals in one or more of the following ways: by reducing the contact surface temperature, reducing contact surface wear, or by increasing the life span of mechanical seals.

Applications:
  • Manufacturing of a reliable, inexpensive double-tier mating ring for use in applications, including single mechanical seals, double mechanical seals, tandem mechanical seals, bellows, pusher mechanical seals, and all types of rotating and reciprocating machines.

Advantages:
  • Fabrication is simple and inexpensive
  • The double-tier mating ring may be dismantled and cleaned if the coolant channel or inlet and outlet ports become clogged with debris.
  • The stationary rings may be made from different materials having different heat conducting characteristics
  • If the first stationary ring abutting the rotating ring becomes worn, it can be replaced without having to replace the second stationary ring
  • The double-tier mating ring increases the service life and continuous operating times of a mechanical seal
  • Heat is substantially removed from the contact surface of the mating ring
  • The occurrence of hot spots, blistering, heat checking, seal face cracking, and excessive wear, which can ultimately cause premature seal failure, is minimized

Abstract: An apparatus and method to enhance the overall performance of mechanical seals in one of the following ways: by reducing seal face wear, by reducing the contact surface temperature, or by increasing the life span of mechanical seals. The apparatus is a mechanical seal (e.g., single mechanical seals, double mechanical seals, tandem mechanical seals, bellows, pusher mechanical seals, and all types of rotating and reciprocating machines) comprising a rotating ring and a double-tier mating ring. In a preferred embodiment, the double-tier mating ring comprises a first and a second stationary ring that together form an agitation-inducing, guided flow channel to allow for the removal of heat generated at the seal face of the mating ring by channeling a coolant entering the mating ring to a position adjacent to and in close proximity with the interior surface area of the seal face of the mating ring.