Control valve maintenance, control valve in need of repair because of cavitation problems, occupying more than 90% of the proportion of the steam control valve maintenance; the steam itself corrosive effect; Oulei Si valve repair factory in Jiangyin: fully understand the control valve cavitation control valve maintenance is of great significance, the following for you to say something about cavitation control valve maintenance:
What is the control valve cavitation?
Control valve cavitation, also known as cavitation, the control valve cavitation phenomenon is when the medium flowing through the valve cavity contraction flow at maximum flow rate, pressure can be the lowest, when the pressure is lower than the saturation vapor pressure of the media, liquid gasification , partially converted to a vapor or gas containing bubbles. When the medium flows through the contraction flow at pressure rise, if it is more than saturated vapor pressure values, the bubble rupture, re-gas (steam) phase into the liquid phase, a process known as cavitation or cavitation (Cavitation). When the bubble burst, spraying release tremendous amounts of energy, and produces vibration wave laboratory prove 150μm diameter bubble rupture droplet ejection speeds of up to 400km / h, generated an instant burst pressure of up to thousands of kilograms of trim surface severe impact erosion wear, will also lead to the occurrence of severe vibration and noise, blocking the flow. Severe cavitation within a very short time, the valve member will be damaged or the valve operating characteristics changed.
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