Fluidic feedback pressure regulation system for a mechanical sea

Details Fluidic feedback pressure regulation system for a mechanical sea Fluidic feedback pressure regulation system for a mechanical sea

Filed on

1998-03-02

Date issued

2000-09-12

Examiner

Knight, Anthony

Patent Class

Seal for a joint or juncture

SubClass

Seal between relatively movable parts

SubSubClass

Relatively rotatable radially extending sealing face member

Other Related Categories

277400, 277401, 277408, F16J 1534

Type

Patent

Status

active

Patent number

06116609&

Description

ABSTRACT:
A fluidic feedback pressure regulation system employs one or more fluids within a mechanical seal to control one or more other fluids. The system includes a fluid manifold and a movable differential pressure valve, both of which are completely mounted within a bore in the seal gland. The valve is connected to several fluid distribution networks, so that the valve can establish fluid communication between a regulated fluid (such as barrier or process fluid) and either (1) a high pressure fluid supply to increase the pressure of one of the fluids, or (2) an exhaust vent in order to remove fluid from the fluid distribution, concomitantly reducing the fluid pressure in the seal. All the fluids utilized in the seal are regulated by the pressure system with respect to each other in order achieve, pressure-wise, optimal seal operating conditions. In particular, the fluids can be regulated during use to achieve certain leakage characteristics. The fluidic feedback pressure regulation system can be formed of multiple subsystems, which are combined into one integrated system substantially completely and solely mounted within the gland.

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