How to extend the life of the ceramic valve door way

by:AIRWOLF     2020-06-09
A, increases the opening work life extension in as far as possible when started using ceramic valve door on the biggest opening work, such as 80%. Initial impurities in this way, the pipe erosion and abrasion damage, damage to the valve core part outside, remove the impurities in the pipeline, then adjust the opening of the valve opening to the normal slightly larger, as fluid damage to the valve core, flow rate increases, the opening of the circular arc polishing machine reduced accordingly to such damage, gradually close, make whole all make full use of the valve core, until the valve core roots and sealing surface damage, cannot use. Second, the increased diameter increased with the formula for computing the CV value, we calculate the correct CV to choose suitable for optimum valve gate diameter ( Standard) 。 Under the condition of the same flow, the valve gate diameter is smaller, the faster the fluid velocity, medium the erosion of the valve core and seals will be severe. Suggest user within the scope of the freedom to opening adjustment, appropriately increase the calibre of the valve gate, which have the effect of reducing wear and tear. Third, change the circular arc polishing machine structure to improve the life ceramic valve door initially two type structure, in order to the valve door structure more reasonable, changed now commonly used three panel structure, this structure with double valve seats, therefore also has the characteristics of the double seal. At the same time, pay attention to choose when to choose ceramic valve door cant have transition design of gate valve, regulating valve to reduce the impact of the fluid. Four, transfer damage position to improve the destroyed life place transferred to a secondary position, in order to protect the valve seat sealing surface and the surface of the throttle valve core. Ceramic ball valve door erosion is most serious, usually the fastest part of fluid velocity is the bottom of the imported parts, fluid in ceramic ball valve door now three panel structure, ball core reversing can be used, so a ball core can be used in the inlet four times, prolongs the life of the valve gate 4 times. Of the five, clean pipeline life extension pipe welding slag, rust, solidification of pulp are, wire, cloth and other body parts at the throttle mouth, arc polishing machine guide, causing blocked or jammed the valve core rupture often occur in the early new operation system and put into operation after overhaul. This is the most common fault. Encounter this situation, it is necessary to remove for cleaning, remove the slag content, such as the sealing surface damage should also grinding; Open the bottom plug at the same time, in order to develop residue, and the pipeline to wash. Before put into operation, to adjust the valve fully open, let the medium flow into normal operation again after a period of time. Rational use of ceramic valve door, on the maintenance to the greatest extent, prolong its service life, is the first problem of using ceramic gate valve.
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