| 摘要 |
<p>The invention concerns a sea water desalination system comprising a reverse osmosis cell (12) containing a semi-permeable membrane for performing desalination of the water by passing sea water under pressure through the membrane, a pump (20) for forcing the pressurised sea water through said membrane and a mechanism driving the pump shaft comprising a direct current motor (22) and an alternating current motor (24), the two motors being mounted in position driving the pump shaft with a belt, and also comprising clutch means for preventing one of the motors from being driven in rotation while the other motor is activated and drives the pump shaft in rotation.</p> |
