Previously, each outlet for purifying electric fog was equipped with a corresponding water seal; this is no longer the case
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In previous designs, each electric fog outlet (located below the flue) was equipped with its own water seal; now, all electric fogs share one single water seal. The problem is that in the past, when the water seal used for controlling the electric fog ran out of water, it was possible to close the valve corresponding to each individual electric fog outlet and refill the water seal. The problem of sharing one water seal now is that once the water in it is drained, how can it be refilled? Reduce the air volume, but the electrostatic fog still operates under negative pressure (it gets drained as soon as water is added).
First, appropriately reduce the air volume of the fan, and the water supply amount must keep up as well. It is more important to investigate the causes of the increased negative pressure, such as whether there are any blockages from the furnace outlet to the electrostatic precipitator inlet. By resolving the issue of increased pressure, the problem with the safety seal will be resolved as well.
Generally, it is blockages in the waste heat boiler or air preheater that cause an increase in negative pressure; resolving these blockages also solves the issue of safe water supply.
A valve can also be installed between the safety water seal and the main pipeline, with this valve being closed only during water replenishment.