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thank you so much for your kind and good reply

thank you zdas04, you mean size, the compressor is aroud 4 meter(lengh) x 2 meter(height). It is grouted with frame like H-beam(steel) on the ground.

Thank you for your concerning, I measured the frame(structure) vibration.

I have a problem that reciprocating compressor has very high vibration, 23 mm/sec Peak value. The period of cylinder is 547 rpm. The dominant freq is 5 x rpm, the amplitude is 22 mm/sec at that freq(2735cpm). on shop test report, it just had 5 mm/sec around. After installation in field, the...

Thank you so much for your replys. Actually, I'm user not desinger. So, I have no idea for pulsation study. The manufacturer said it was good in the shop and showed me the test report. I suspect wrong installation. At this time, why vibration was incresing slightly after reinforce stiffness...

I have a problem that reciprocating compressor has very high vibration, 23 mm/sec Peak value. The period of cylinder is 547 rpm. The dominant freq is 5 x rpm, the amplitude is 22 mm/sec at that freq(2735cpm). on shop test report, it just had 5 mm/sec around. After installation in field, the...

Hi all, I have a screw compressor, which is fuel gas compressor. It has 4 female/6male screws no timing gear. The customer want to reduce vibration because they had to welding cracked pipe and structure caused by high vibration. The highest vibration freq. is 4x rpm, it could be screw mesh...

First of all, I should say 'thank you CESSNA1'. I suspect that the high vibration would be main cause for pipe crack. I checked vibration data from several points, on both side of Compressor and some points of pipe lines. Whole machine including structure is rattling. The source of that is 4x...

Hi all, I have a screw compressor, which is fuel gas compressor. It has 4 female/6male screws no timing gear. The customer want to reduce vibration because they had to welding cracked pipe and structure caused by high vibration. The highest vibration freq. is 4x rpm, it could be screw mesh...