What is the actual function of the buffer tank in front of the vacuum pump?
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I think there are mainly two functions: 1. The function of a vapor-liquid separator, to prevent the liquid carried along from causing damage to the pump； 2. The role of stabilizing the system vacuum – I personally always find this explanation a bit forced ； I’m just throwing out some ideas; I hope everyone will feel free to share their insights.
[quote]The original post was posted by shd163207 on 2009-3-3 at 13:16. The function of a buffer tank is to cushion pressure, prevent backflow, and it can also be used for gas-liquid separation in order to maintain a stable vacuum level (otherwise, the required vacuum level cannot be achieved). The volume of the buffer tank is calculated based on the following consideration: when the pump in the previous stage stops operating, while the vacuum pump continues to function normally, it pumps gas into the gas storage tank. At this time, the source of gas is the leakage flow rate in the area between the high-vacuum valve at the vacuum pump inlet and the upstream pipeline valve at the vacuum pump outlet, as well as the surface bleed flow rate in that same area. These gas flows cause an increase in the pressure at the vacuum pump outlet, but it cannot exceed the vacuum pump’s maximum exhaust pressure. http://bbs.hcbbs.com/thread-404920-1-1.html
Upstairs, thank you for participating. However, I still don’t understand the things that were cited; could you please explain them in more detail?