Inlet Guide Vane：
1、IGV：（inlet guide vane）
2、Working method：The opening angle depends on the suction pressure to ensure that the compressor does not exceed its maximum power. When the compressor starts, the opening angle of the IGV must be greater than 80%, manually operated, and must be less than 20% after starting to normal speed, switched to PLC contro
3、Feature：Imported guide vanes ensure that the direction of air flow through the guide vanes is consistent with the direction of impeller rotation. Compared to intake butterfly valves, this allows the compressor to achieve higher efficiency during non full load operation.