Patent ID: 9121397
Filing Date: 2015-09-01
Classification: F04B,Y10T

Abstract:
1. A pressure pulsation dampening system for a reciprocating pump that pressurizes a working fluid delivered from a working fluid source, the pressure pulsation dampening system comprising: a hydraulic cylinder having a piston movably disposed within a housing and dividing the housing into a working fluid chamber and a hydraulic fluid chamber, wherein the working fluid chamber is in fluid communication with an outlet of the reciprocating pump; a valve in fluid communication with the hydraulic fluid chamber, the valve actuatable to a first configuration, wherein pressurized hydraulic fluid is supplied to the hydraulic fluid chamber from a hydraulic fluid reservoir that is separate from the working fluid source, and to a second configuration, wherein hydraulic fluid is relieved from the hydraulic fluid chamber; and a controller configured to actuate the valve to the first configuration in response to a pressure decrease at the outlet and to the second configuration in response to a pressure increase at the outlet; wherein the piston is movable relative to the housing under pressure from working fluid in the working fluid chamber and hydraulic fluid in the hydraulic fluid chamber, whereby working fluid is relieved from the outlet to the working fluid chamber and supplied to the outlet from the working fluid chamber.