Operation sequence of the compressor anti-surge valve
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Centrifugal compressors are equipped with 3 surge valves: three-return one, three-return two, and three-return three. What is the sequence for opening and closing the anti-surge valve? The medium is acrylic.
I don’t know what the medium is for such a structure; please specify.
I want to know too. It seems there is one surge valve per unit. Does it refer to choosing two out of three to control the sampling signal?
Anti-surge valves are generally of a high-selectivity type; the 3-to-2 selection you mentioned is likely related to interlocking
Anti-surge valves: A single compressor can have multiple anti-surge valves
Here is a general rule: for centrifugal compressors, increase the pressure first when accelerating, and decrease it first when decelerating. Speed increase is the premise; speed reduction is the reverse!
Generally, imported centrifugal air compressors have only one anti-surge valve, which is controlled automatically by the system
Start with the low pressure first, then the high pressure; the low-pressure gas will reach the medium and high pressures
Increase the speed first when boosting pressure, otherwise surge will occur
I think high pressure should be turned on first, followed by low pressure; if high pressure isn’t used, the outlet pressure becomes too high and nothing can be pumped out