Method and apparatus for minimizing hydrodynamic pressure noise

Details Method and apparatus for minimizing hydrodynamic pressure noise Method and apparatus for minimizing hydrodynamic pressure noise

1993-10-29

1995-04-11

Williams, Hezron E.

Measuring and testing

With fluid pressure

Leakage

73 46, G01M 326

Patent

active

054047480

ABSTRACT:
Risk of hydrodynamic pressure noise interference with a valve leakage test conducted upon a plurality of valves within a pump assembly is minimized. A pressure sensor within the pump assembly produces a signal indicative of hydrodynamic pressure in fluid distal of an outlet valve of the pump. The signal produced by the pressure sensor is input to a microcontroller that controls the pump assembly. Prior to conducting the valve leakage test, the hydrodynamic pressure level of the fluid is sampled at a frequency that is at least twice that of the hydrodynamic noise. The microcontroller determines if a maximum of the samples of the hydrodynamic pressure level taken during a data interval is above a predetermined threshold. If so, the valve leakage test is suppressed until the maximum pressure level is below the predetermined threshold during a successive data interval. If the hydrodynamic pressure noise level fails to fall below the predetermined threshold within several data intervals, an alarm alerts an operator of a noise fault condition.

REFERENCES:
patent: 4441357 (1984-04-01), Kahn et al.
patent: 4715214 (1987-12-01), Tveter et al.
patent: 4818186 (1989-04-01), Pastrone et al.
patent: 5000664 (1991-03-01), Lawless et al.
patent: 5264833 (1993-11-01), Jeffers et al.

Affiliated with

Also associated with

Rating

Method and apparatus for minimizing hydrodynamic pressure noise does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for minimizing hydrodynamic pressure noise , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for minimizing hydrodynamic pressure noise will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1531479