Dry gas seal issues in centrifugal compressors
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In the dry gas seal of a centrifugal compressor, the control parameter for the primary seal gas is flow rate, which is 60 standard cubic feet per hour; why isn’t pressure controlled? Some pressure is needed in order to achieve a sealing and isolation effect! There is flow, but the pressure might not be sufficient? The same is true for the secondary seal; could the experienced colleagues explain why? ? Our factory uses Huayang seals
The generation of flow is contingent on a pressure difference; without it, there can be no flow. The purpose of controlling flow is to save as much as possible while ensuring proper operation
The primary seal gas must flow through the labyrinth at a velocity of at least 5 m/s; otherwise, the medium will flow back, and there are requirements regarding flow rate, velocity, and pressure
Flow rate and pressure are the same thing, right? By controlling the flow rate of the sealing gas, it proves that there is a pressure difference, which is what enables flow to occur
Flow rate and pressure are the same thing, right? By controlling the flow rate of the sealing gas, it proves that there is a pressure difference, which is what enables flow to occur
Sufficient pressure is required to generate thrust momentum; if the flow rate is insufficient, it indicates that the pressure of the sealing gas is too low. If the flow rate is too high, it is likely that the sealing surface is damaged.