Performance Assessment of Pneumatic-Driven Automatic Valves to Improve Pipeline Fault Detection Procedure by Fast...

Area of Science:

• Fluid Dynamics
• Hydraulic Engineering
• Signal Processing

Background:

• Fast transients are essential for fault detection in long transmission networks.
• Optimizing transient generation requires specific valve performance characteristics for maximum information extraction from pressure signals.
• Previous methods often lack the necessary speed, repeatability, and sharpness in pressure wave generation.

Purpose of the Study:

• To experimentally investigate and compare the transient dynamics of butterfly and pneumatic ball valves.
• To evaluate valve performance in generating sharp, repeatable pressure waves for fault detection applications.
• To analyze valve closing dynamics and pressure wave characteristics in a pressurized pipe system.

Main Methods:

• Experimental transient tests conducted at the Water Engineering Laboratory (WEL).
• Utilized a butterfly valve and a pneumatic ball valve to generate pressure waves in a copper pipe.
• Monitored valve displacement with a camera and measured pressure using a transducer; analyzed experimental data.

Main Results:

• Characterized the performance of both valve types in generating transient pressure waves.
• Compared valve closing dynamics, pressure wave sharpness, and time history stability.
• Demonstrated the effectiveness of the proposed approach for characterizing transient dynamics.

Conclusions:

• Pneumatic ball valves show potential for generating sharper and more stable pressure waves compared to butterfly valves.
• The experimental methodology provides an effective means to characterize transient dynamics for fault detection.
• Optimized transient generation is crucial for enhancing fault detection capabilities in transmission networks.