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US 7,010,961 B2Granted
Power head secondary containment leak prevention and detection system and method
AssigneeGilbarco Inc.
InventorsRay J. Hutchinson, Donald D. Halla, Richard G. Dolson, Robert P. Hart, Richard K. Lucas, Kent D. Reid
Life of this patent
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Abstract
A submersible turbine pump includes a power head enclosed in a casing. A vacuum source associated with the submersible turbine pump draws a vacuum in the interior space of the casing. A pressure sensor may be used to monitor the vacuum in the interior space to detect a leak in the power head or the casing. If a leak is detected, an alarm may be generated and the submersible turbine pump may be deactivated.
Claims24
A system for detecting a leak, comprising:
- a submersible turbine pump adapted to draw fuel from an underground storage tank for delivery to a fuel dispenser, said submersible turbine pump comprising:
- a power head containing a fuel flow area that receives the fuel from the underground storage tank for delivery to the fuel dispenser;
- and
- a vacuum source;
- a casing surrounding said power head, said casing comprising an interior space, said vacuum source fluidly connected to said interior space such that a vacuum is generated in said interior space;
- and
- a pressure sensor coupled to said interior space to measure a vacuum level in the interior space.
4 more elements
Dependencies are inferred from the claim text.