System and method for line pressure testing with isolation valve
AssigneeVmi Manufacturing, LLC
InventorGregory E. Young
Life of this patent
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Abstract
A hydrocarbon dispensation line pressure sensor adapted to work without requirement of a separate closed valve. The system closes the dispensation line upstream via an isolation valve. The pressure can be sensed from the dispensation line through the valve to provide dispensation line pressure. A channel in fluid communication with the dispensation line may be provided to allow pressure measurement apart from the main dispensation line. Further, a method for measuring the pressure drop profile of a dispensation line and various methods to determine the pressure loss due to leaks in dispensation line.
Claims20
A method of initializing a dispensation line on a hydrocarbon discharge system, said method comprising the steps of:
- a. isolating the dispensation line from upstream components in a tank system via a line leak detector valve;
- b. lowering pressure in the dispensation line via drawing a set amount of fluid from the dispensation line;
- c. determining an amount of fluid loss required to drop the pressure in the dispensation line between a first predetermined pressure threshold and a lower second predetermined pressure threshold.
A method of testing a dispensation line pressure on a hydrocarbon discharge system, said method comprising the steps of:
- a. isolating the dispensation line from the upstream components in a tank system;
- b. initializing an amount of fluid loss required to drop a pressure in the dispensation line between two pressure levels;
- c. sensing the pressure on the dispensation line upstream of a vending nozzle;
- and
- d. measuring a first measured time taken when pressure along the dispensation line drops between the two pressure levels.
Dependencies are inferred from the claim text.