A new and improved seal plate design has been released. The updated design has a strong construction which can withstand vibration issues and it provides a better sealing to prevent corrosion attacks. Furthermore, it makes installation and alignment easier.
Unfortunately, some plants have experienced vibration issues, and in these cases, there is a possibility that the original seal plate design might crack. If there is a crack in the seal plate, cold air can enter the hub, and there is a risk of corrosion attacks.
To keep the hub safe, we have developed an improved seal plate design. The new design has a stronger construction which can withstand vibrations, and it also provides a better sealing and easier installation.
For the majority of plants, this improved version will be sufficient to keep the hub safe.
However, the quality of coal also has an impact on risk of corrosion. Coal with a higher sulphur content increases the risk, and in these situations extra protection may be necessary.
Some plants decide to guard themselves against this increased corrosion risk by installing a combined labyrinth and seal plate. This solution provides extra safety but is also slightly more difficult to assemble and align. On two-stage ID fans, the combined labyrinth and seal plate design can be installed in both the diffusor and in the inlet box.
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