Do the inlet and outlet valves have to be open when the compressor is started?

1. What will happen if the inlet valve is not opened when the reciprocating compressor is started? Use negative pressure? I've never seen one that doesn't open the inlet valve. In principle, it's pumping out negative pressure. 2. What will happen if the inlet valve is not opened when the centrifugal compressor is started? What if the exits are not open? I haven’t tried it before, do you dare to try it? 3. Why does the reciprocating compressor not have surge phenomenon? The reciprocating type is a volumetric type, which is essentially different from the centrifugal type in compression principle. It will not create a situation where the pipeline pressure is higher than the compressor outlet pressure. As for the definition of surge, check it out on Baidu. I won’t go into details here. 4. Close the inlet and outlet valves of the centrifugal compressor and fully open the anti-surge backflow valve. Will surge occur at this time? I haven't tried it either, I'm keeping an eye on it. Find a compressor expert to answer your questions next time.

This post was last posted by * Edited by ang2000 on 2010-4-19 20:17 Our reciprocating compressor never opens the inlet valve when starting and performs no-load start.

To put it simply, a centrifugal compressor has a rotation speed of more than 10,000 rpm, while a reciprocating compressor only has a few hundred rpm. Can you compare whether a higher rotation speed causes more problems or a lower rotation speed?