Method and apparatus to monitor check valves

Details Method and apparatus to monitor check valves Method and apparatus to monitor check valves

1991-11-08

1993-11-02

Williams, Hezron E.

Measuring and testing

Vibration

By mechanical waves

73168, 367 99, 376248, 376252, G01N 2910, G01N 2924

Patent

active

052575454

ABSTRACT:
A non-intrusive vibration measurement system and method using commercial ultrasonic instruments together with digital signal filtering and analysis techniques is adapted to quantitatively detect vibrations as small as 0.04-inch peak-to-peak. The system and its methodology is used for in-service vibration monitoring of internal components of check valves, pumps, nuclear reactors, steam generators and heat exchangers, especially when the vibration frequency is too low for quantitative analysis by accelerometers and when the strain induced is too low for strain gauge analysis, and when the vibrating component is in an "encased" environment.

REFERENCES:
patent: 4782702 (1988-11-01), Boone et al.
patent: 4833453 (1989-05-01), Twerdochlib
patent: 4920802 (1990-05-01), McMullin et al.
patent: 4977778 (1990-12-01), Nafziger et al.
patent: 5008841 (1991-04-01), McElroy
patent: 5154080 (1992-10-01), Hill et al.
patent: 5159835 (1992-11-01), Nafziger et al.

Affiliated with

Also associated with

Rating

Method and apparatus to monitor check valves 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 to monitor check valves, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus to monitor check valves will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1751550