How to use wear-resistant ceramic compensator?

When the flow direction changes, the acting torque of the fluid on the wear-resistant ceramic compensator cancels each other out, and there is no undercut phenomenon of the wear-resistant ceramic compensator, so the dynamic stability is relatively good. The pressure drop inspection of the wear-resistant ceramic compensator is carried out during the clean water simulation debugging.

During the full stroke operation of the wear-resistant ceramic compensator, check the pressure drop changes at both ends of the wear-resistant ceramic compensator, whether there is noise caused by cavitation or flash evaporation, how the flow rate changes, and whether it meets the designed flow characteristics Wait. Start timing when the wear-resistant ceramic compensator changes and the time required for the valve position of the wear-resistant ceramic compensator to reach 63% of the steady state position is the response time, and the time should meet the operational requirements of the process production process.

The thickness of the ceramic patch has reached 8-10mm. Adding a 10mm thick wear-resistant layer to some large-diameter corrugated compensators is equivalent to reducing the inner diameter by 20mm. If the diameter is large, it may not be obvious. However, it is prominent in some pipelines, such as stainless steel corrugated compensators with a diameter of around DN200. At this time, we need to consider the problem of inner diameter.

If you want to keep the inner diameter of the stainless steel corrugated compensator with normal specifications, then you need to enlarge the overall outer corrugated pipe to ensure the inner diameter of the finished product. The valve body of the wear-resistant ceramic compensator is straight-through, and the fluid is blocked by the ceramic inner wall moving down and pressing the valve body. Because the valve body is straight-through, the fluid blocking and sealing ability is not as good as the weir-type wear-resistant ceramic compensator.

Affected by the ceramic inner wall and lining material, the wear-resistant ceramic compensator cannot be used in high-temperature and high-pressure conditions. The general working pressure is not more than 1.6MPa, and the working temperature is not more than 150℃. The wear-resistant ceramic compensator seals the fluid with a ceramic inner wall, therefore, no packing is required, which reduces the dead zone limit and avoids leakage. However, due to the material characteristics of the ceramic inner wall, its reproducibility is not high, and there is a large hysteresis.

The flow characteristic of the wear-resistant ceramic compensator is similar to the quick-opening characteristic, that is, it presents a linear characteristic within 60% of the stroke, and after more than 60% of the stroke, the flow changes very little. The flexural deformation of the bending arm of the wear-resistant ceramic compensator enables the wear-resistant ceramic compensator to press the sealing ring tightly to ensure a good seal, and the standard leakage is less than 0.01% ℃.