Ceramic valves are often used in bad working conditions, the installation in heavy process pipeline, the working conditions are extremely complex, if there are problems, because of its bulky, hard to pinpoint the problem, often spirit is willing, but the flesh is weak, also relates to system put into operation, the complete system, regulate the quality, environmental pollution and other problems, so the rational use of ceramic valves, the maximum of the maintenance is first use of ceramic valves problem. The following method of extending the life of 5 kinds of ceramic valve.
1, pipe cleaning to extend the life of pipeline welding slag, rust, lime slurry solidification dregs, wire, cloth and other in the throttle, steering parts caused by blocked or stuck to the spool fragmentation, often occurs in the new operation system and overhaul operation after the initial. This is the most common fault. Encounter this situation, must be disassembled for cleaning, remove residue, such as the sealing surface is damaged should be grinding; at the same time, open the bottom plug, to flush slag and the pipeline flushing. Before operation, to adjust valve fully open, and then let the media flow into the normal operation after a period of time.
2, increasing the opening degree of work to extend the life of the use of ceramic valve when the maximum opening as far as possible, such as 80%. In this way, the original material erosion, wear and other damage occurred outside the valve core damage, removal of impurities in the pipeline, and then adjust the valve opening to a slightly larger area, with the flow of fluid on the valve core, the flow increases, the corresponding reduction in opening, so that the entire valve is fully closed, until the valve core and sealing surface damage, can not be used.
3, increase the diameter of the increase in the life of the CV value of the formula, calculate the correct CV so as to select the appropriate valve diameter. In the case of the same flow, the smaller the valve diameter, the faster the flow of the fluid, the media on the valve core and sealing parts of the erosion is more powerful. It is recommended that the user be able to open the range of free adjustment, appropriate choice of large diameter valve used, so as to reduce the role of wear.
4, the transfer of damage to the location of the life of the serious damage to the serious place to transfer to a secondary position, to protect the valve seat sealing surface and throttle. Usually ceramic ball valve is the most serious erosion, fluid velocity is the fastest place in the lower part of the fluid inlet, for now three piece of ceramic ball structure, can be used to reverse the ball core, so that a ball core can be used at the entrance of four times, so that the valve life expectancy extended 4 times.
5, change the valve structure to improve the life of the ceramic valve is initially used two chip structure, in order to make the valve structure is more reasonable, and now the three chip structure, this new structure also has a double sealing edge. At the same time, in the selection of ceramic ball valve to pay attention to the choice of a slope of the design of the valve, so that the valve can reduce the impact of fluid.
