HwT
28-11-2021, 11:22 AM
Hello!
We have customer that has several Vilter single screw compressor,
It’s a single stage system with heat pump system in the discharge side of the first stage.
The first stage has no problems, but the heat-pumps (vilter vssh) has problems with the oil injection piping vibrations, this occurs at all frequencies and capacities, but decreases as the compressor runs completely loaded.
Has anybody seen these problems before or has any good input to give?
We have tried to installed special dampening device from vilter (works like a Expansion tank) located in the oil injection line to damping the pulses in the oil supply line.
Different arrangements of pipe support has been carried out, but no change in vibrations.
The compressor-skid is not produced by vilter and is therefore not supported by vilter either..
Vertical oil separator.
Vibrations measured is 40mm/s limit by vilter is 7mm/s
We have customer that has several Vilter single screw compressor,
It’s a single stage system with heat pump system in the discharge side of the first stage.
The first stage has no problems, but the heat-pumps (vilter vssh) has problems with the oil injection piping vibrations, this occurs at all frequencies and capacities, but decreases as the compressor runs completely loaded.
Has anybody seen these problems before or has any good input to give?
We have tried to installed special dampening device from vilter (works like a Expansion tank) located in the oil injection line to damping the pulses in the oil supply line.
Different arrangements of pipe support has been carried out, but no change in vibrations.
The compressor-skid is not produced by vilter and is therefore not supported by vilter either..
Vertical oil separator.
Vibrations measured is 40mm/s limit by vilter is 7mm/s