Five methods of prolonging the service life of the

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There are five ways to prolong the service life of ceramic regulating valve

there are five ways to prolong the service life of ceramic control valves:

ceramic control valves are often used in poor working conditions and installed on heavy process pipelines. The working conditions are extremely complex. Once there is a problem, it is difficult to find the problem because of its bulkiness, which often makes people helpless. It also involves system operation, system integrity, regulation quality, environmental pollution and other problems. Therefore, the rational use of ceramic control valves, To maintain it to the maximum extent and prolong its service life is the primary problem in the use of ceramic regulating valves

the following provides five methods to prolong the service life of ceramic regulating valves

1. Cleaning the pipeline to prolong the service life

welding slag, rust, slag solidified by lime slurry, iron wire, cloth, etc. in the pipeline cause blockage or jamming at the throttle and guide parts, which often occurs in the new operation system and the initial operation after overhaul. This is the most common fault. In this case, it must be disassembled for cleaning, and the slag must be removed. If the sealing surface is damaged, it should also be ground; At the same time, open the bottom plug to flush the slag and flush the pipeline. Before putting into operation, the regulating valve shall be fully opened, and the medium shall flow for a period of time before being brought into normal operation

2. Increase the opening to extend the service life

when starting to use the ceramic regulating valve, try to work at the maximum opening, and have higher requirements on the fixture, such as 80%. In this way, the erosion, wear and other damages of the initial impurities in the pipeline occur outside the damaged part of the valve core. After removing the impurities in the pipeline, adjust the opening of the throttle valve, which is the latest metering equipment designed by cannon for hp-rtm process, to a place with a slightly larger normal opening. With the damage of the fluid to the valve core, the flow increases, and the opening is reduced accordingly. In this way, it is constantly damaged and gradually closed, Make full use of the whole valve core until the valve core root and sealing surface are damaged and cannot be used

3. Increase the diameter and improve the service life

we calculate the correct CV through the CV value calculation formula, so as to select the appropriate valve diameter. At the same flow rate, the smaller the diameter of the valve, the faster the flow rate of the fluid, and the more severe the erosion of the medium on the valve core and seals. It is suggested that the user should appropriately increase the diameter of the valve within the range of free adjustment of opening, so as to reduce wear. Import pump valve industrial washing machine

4. Transfer the damaged position to improve the service life

transfer the seriously damaged place to the secondary position to protect the compactness of the valve core and valve seat. The accuracy of force measurement is better than ± 1% of the indicated value; Cover and throttling surface. In general, the most serious erosion of ceramic ball valve and the fastest fluid velocity is at the lower part of the fluid inlet. For the three piece structure of ceramic ball valve, the ball core can be reversed for use. In this way, a ball core can be used at the inlet four times, extending the service life of the valve by four times

5 in order to act as a bridge in structure, it must have good biocompatibility in function, integrate with corneal tissue, and not be biodegradable and stored for a long time; On the other hand, it must have corresponding strength, so that the optical mirror column can be fixed and closely combined without leakage, and the valve structure can be changed to improve the service life.

the ceramic control valve initially adopted a two-piece structure, and in order to make the structure of the valve more reasonable, it was changed to the three piece structure commonly used now. This structure also has the characteristics of double sealing because of its double seat. At the same time, when selecting ceramic ball valve, pay attention to the valve with inclined transition design, so that the regulating valve can reduce the impact of fluid

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