Why can rapid oil filling of a standby pump cause the running pump to become empty?
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Why can too rapid filling of a standby pump lead to the vacuum condition in the operating pump, especially in the case of high-temperature oil pumps?
If PLAN32 uses external flushing, diesel or similar substances are generally used as the flushing fluid. If the flow rate of this external flushing fluid is too high, it will vaporize due to the high temperature once it enters the pump, ultimately causing the pump to become empty
Hello, it’s an ethylene cracking unit; the medium used is fuel oil. What I meant was that the backup pump is used for filling the system while the operating pump is used to evacuate it – I’m not quite sure about this
One standby pump and one operating pump; the standby pump can easily cause the operating pump to run out of fluid while it is being charged as a standby
Does the standby pump create flow competition with the pump that is in operation during priming? The standby pump for high-temperature pumps is usually in a hot standby state; how can this situation occur?
After the pump is cut off and the standby pump is overhauled to take over as a standby unit, it’s possible for the operating pump to become empty of fluid; it doesn’t seem to be due to flow competition, and I’m not sure what the cause is
Please explain what liquid filling is, and what kind of process and technique it involves
After reading so many of the original poster’s descriptions, my personal judgment is that what they are doing with liquid filling is what we commonly refer to as pump filling. Too fast a filling speed can lead to competition for flow at the pump inlet, and the insufficient flow at the suction inlet due to rapid filling can easily result in cavitation! I ask you in return: why do you need to fill the pump so quickly? Generally, imports are allowed at a slight level while gradually implementing pump filling. What is the purpose of your approach?
Check the valve of the backup pump.
That’s right; the pump wasn’t filled quickly – I was just thinking about the possible consequences. On one hand, filling the pump too fast could cause the backup pump to take over too much flow, resulting in the operating pump running out of fluid. On the other hand, filling the backup pump too quickly might allow gas from that pump to enter the operating pump, again leading to a shortage of fluid in the operating pump