| US 7,347,255 B2 | ||
| Device for detecting water in product-only pump flow stream | ||
| David A. Fischer, Ann Arbor, Mich. (US); and Craig A. Bamm, Ann Arbor, Mich. (US) | ||
| Assigned to QED Environmental Systems, Inc., Ann Arbor, Mich. (US) | ||
| Filed on Mar. 28, 2005, as Appl. No. 11/91,912. | ||
| Claims priority of provisional application 60/557438, filed on Mar. 26, 2004. | ||
| Prior Publication US 2005/0211432 A1, Sep. 29, 2005 | ||
| Int. Cl. E21B 43/12 (2006.01); E21B 44/00 (2006.01) | ||
| U.S. Cl. 166—54 [166/75.12; 210/121] | 9 Claims |
| 1. A device for detecting the presence of water in a hydrocarbon pump system for pumping hydrocarbon-based materials from
a subterraneous remediation site comprising:
a sealed float chamber, said float chamber positioned adjacent to and in fluid connectivity with a hydrocarbon pump, said
chamber having an input for receiving hydrocarbon product and an output for discharging hydrocarbon product;
a gravity-specific float member slidable along a vertical axis contained within said float chamber, said float having a magnetic
element imbedded inside said float member;
a sealed switch inside a float guide rod actuated by said magnetic element of said float member coming within close proximity
of said sealed switch only when a predetermined amount of water is present in said sealed float chamber, with the hydrocarbon-based
material;
said predetermined amount of water becomes present in the sealed float chamber when said hydrocarbon pump draws in water present
in said subterraneous remediation site in combination with hydrocarbon-based material from said subterraneous remediation
site, said actuated sealed switch completes an electrical circuit.
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