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Hydraulic pump with in-ground filtration and monitoring capability

United States Patent

5,569,021
October 29, 1996
View the Complete Patent at the US Patent & Trademark Office
Savannah River National Laboratory - Visit the Technology Transfer Website
A hydraulically operated pump for in-ground filtering and monitoring of ws or other fluid sources, including a hollow cylindrical pump housing with an inlet and an outlet, filtering devices positioned in the inlet and the outlet, a piston that fits slidably within the pump housing, and an optical cell in fluid communication with the pump housing. A conduit within the piston allows fluid communication between the exterior and one end of the piston. A pair of o-rings form a seal between the inside of the pump housing and the exterior of the piston. A flow valve positioned within the piston inside the conduit allows fluid to flow in a single direction. In operation, fluid enters the pump housing through the inlet, flows through the conduit and towards an end of the pump housing. The piston then makes a downward stroke closing the valve, thus forcing the fluid out from the pump housing into the optical cell, which then takes spectrophotometric measurements of the fluid. A spring helps return the piston back to its starting position, so that a new supply of fluid may enter the pump housing and the downward stroke can begin again. The pump may be used independently of the optical cell, as a sample pump to transport a sample fluid from a source to a container for later analysis.
Hopkins; Charles D. (Augusta, GA), Livingston; Ronald R. (Aiken, SC), Toole, Jr.; William R. (Aiken, SC)
The United States of America as represented by the Department of Energy (Washington, DC)
08/ 373,433
January 17, 1995
The United States Government has rights in this invention pursuant to Contract No. DE-AC09-88SR18035 between the U.S. Department of Energy and the Westinghouse Savannah River Company.