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Title: Hydraulic pump with in-ground filtration and monitoring capability

A hydraulically operated pump is described for in-ground filtering and monitoring of wells 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 bemore » used independently of the optical cell, as a sample pump to transport a sample fluid from a source to a container for later analysis.« less
Inventors:
; ;
Issue Date:
OSTI Identifier:
555324
Assignee:
US Dept. of Energy, Washington, DC (United States) SRS; SCA: 540220; PA: EDB-98:010879; SN: 97001853484
Patent Number(s):
PATENTS-US-A8373433
Application Number:
ON: DE97009523; PAN: 8-373,433; TRN: AHC29802%%18
Contract Number:
AC09-89SR18035
Resource Relation:
Other Information: PBD: 1995
Research Org:
Westinghouse Savannah River Co., Aiken, SC (United States)
Sponsoring Org:
USDOE Office of Environmental Restoration and Waste Management, Washington, DC (United States)
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; WATER POLLUTION MONITORS; SAMPLERS; PUMPS; DESIGN; OPERATION; WATER WELLS; MONITORING; CHEMICAL ANALYSIS; GROUND WATER; FILTRATION; WATER QUALITY; IN-SITU PROCESSING

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