How to solve the valve cavitation phenomenon

Update:12-01-2019
Summary:

Just as there can be negative effects on the human body […]

Just as there can be negative effects on the human body, certain frequencies can cause serious damage to industrial equipment. When the control check valve is properly selected, there is an increased risk of cavitation, which will result in high noise and vibration levels, resulting in very rapid damage to the internal and downstream piping of the valve. In addition, high noise levels often cause vibrations that can damage pipes, instruments, and other equipment.

As the valve lapses over time, the components are degraded, and the cavitation generated by the valve causes the piping system to be easily damaged. Most of this damage is caused by vibrational noise energy, which accelerates the corrosion process. The formation and collapse of the contraction near and downstream of the bubble generated by the large amplitude vibration of the high noise level reflected by the cavitation.

Although this usually occurs in ball valves and rotary valves in the valve body, it can actually occur in a short, high-recovery V-type ball valve similar to the main body of the wafer, especially the piping on the downstream side of the butterfly valve. When the valve is stressed at one position, it is prone to cavitation, so it is easy to leak in the piping and welding repair of the valve, and the valve is not suitable for this section of the pipeline.

Based on the cavitation phenomenon of the valve and the mechanism of cavitation damage, some foreign valve structures for preventing cavitation occur are introduced. Key words scouring corrosion, cavitation resistant valve, structure 1. Preface When cavitation occurs, the valve will reduce the bearing capacity of the valve, generate vibration and noise, cause damage to parts and components, and affect the normal operation of the valve.