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US 3,933,172 AGranted
Pipeline surge reliever with sanitary barrier
AssigneeGrove Valve and Regulator Company
InventorDonald M. Allen
Life of this patent
Estimating the term…
Abstract
In a pressure surge relief system wherein a valve opens to relieve the pipeline when line pressure overcomes a pilot chamber gas pressure and including an accumulator which transfers the pressure of the pipeline liquid to the gas in the pilot chamber, the improvement comprising a column of relatively inert fluid which isolates the elastomer components of the accumulator from the possibly corrosive pipeline fluid.
Claims10
In a pressure surge relief system for a liquidtransporting pipeline including:
- an accumulator for transferring the pressure of the liquid in a pipeline to a gas;
- and
- a pilot load duct connected between said pipeline and said accumulator;
- means for isolating the interior of said accumulator from the liquid in the pipeline comprising:
- a barrier fluid vessel connected into said pilot load duct;
- a first connection of the pilot load duct opening from a first portion of said fluid vessel to said accumulator;
- and
- a second connection opening from another portion of said fluid vessel to said pipeline;
- a relatively inert liquid occupying said accumulator, said first connection and said first portion of said vessel;
- the pipeline liquid occupying said second connection and said another portion of said vessel;
- and
- means separating said pipeline liquid and said inert liquid while equalizing pressures thereof.
9 more elements
Dependencies are inferred from the claim text.