초록

A non-invasive system and method is provided for the inspection of check valves which combines acoustic and magnetic techniques. The acoustic and magnetic techniques are used to measure check valve disk motion and internal impacts or vibrations resulting from the disk motion.

대표청구항 ▼

A non-invasive monitoring system for a valve of the type including a housing and a movable element mounted in the housing for movement between an open position and a closed position and intermediate positions between the open and closed positions comprising: (a) first means for both detecting acoust

A non-invasive monitoring system for a valve of the type including a housing and a movable element mounted in the housing for movement between an open position and a closed position and intermediate positions between the open and closed positions comprising: (a) first means for both detecting acoustic energy produced by the valve during a monitoring interval and generating data representative of the detected acoustic energy; (b) second means for both detecting signals indicative of the position of the movable element during the monitoring interval and generating data representative of the detected signals; and (c) third means coupled to the first and second means for simultaneously receiving the data generated by the first and second means and providing data from which a condition of the valve can be determined by a user.