Method for delivering a fluid stored in liquefied form to an end user in gaseous form
AssigneeWestport Fuel Systems Canada Inc.
InventorKevin K. Oversby
Life of this patent
Estimating the term…
Abstract
A system and method is disclosed for storing a fluid in a storage vessel in liquefied form and delivering it in gaseous form to an end user through a supply line. The system comprises a pressure relief circuit for returning the fluid from the supply line to the vessel when predetermined conditions are met. The pressure relief circuit comprises a return line connected to the supply line and the storage vessel, a diversion line to divert the fluid elsewhere and a switching device operable to direct the fluid to either one of the lines, as a function of predetermined conditions.
Claims22
A method, comprising:
- storing a fluid in a vessel in liquefied form;
- delivering said fluid in gaseous form through a supply line to an end user;
- upon meeting a predetermined condition, reducing a fluid pressure in said supply line by directing fluid through a switching device to return said fluid in gaseous form from said supply line to said vessel;
- and
- upon not meeting said predetermined condition, directing said fluid through said switching device to divert said fluid from returning to said vessel and from being delivered to said end user through said supply line by directing said fluid elsewhere through a diversion line.
A method, comprising:
- containing a fluid in a vessel in liquefied form;
- delivering the fluid in gaseous form through a supply line to an end user;
- positioning a switching device to a first opened position when a predetermined condition is met, the positioning of the switching device to the first opened position causing the fluid in gaseous form from the supply line to return to the vessel, the returning of the fluid in gaseous form thereby reducing fluid pressure in the supply line;
- and
- positioning the switching device to a second opened position when the predetermined condition is not met, the positioning of the switching device to the second opened position causing the fluid in gaseous form from the supply line to divert the fluid in gaseous form from returning to said vessel and from being delivered to said end user through said supply line by directing said fluid elsewhere through a diversion line.
Dependencies are inferred from the claim text.