| 摘要 |
<p>This invention relates to balancing thrust on rotors. For example the invention relates to balancing the thrust on the rotor of a compressor. A single stage compressor (10) with an overhung rotor for process gas having one end of the compressor rotor exposed to atmospheric pressure and the other rotor end exposed to suction pressure can incur an extremely large unbalanced load on the thrust area of the rotor as a result of the imposed pressure differential between atmosphere and suction pressures. At low operating speeds, such as at startup or shutdown, the imposed loading is known to exceed the load factor for which the thrust bearing was selected. For that reason, it has been necessary to improvise in order to allow low speed operation when excess thrust load is being incurred.</p> |
