| 摘要 |
A water cooled centrifugal pump is described. The pump comprises a pump body (1) with a pump chamber (4) and a water cooled motor chamber (5) communicating with each other, at least a pumping stage (7) with intake scroll (8) and impeller (9) that is housed in said pump chamber (4) and an electric motor (18) with closing casing (22) housed in said motor chamber (5) and mechanically connected with said impeller (9) through a motor shaft (10) provided with water sealing means (32). A sensor of temperature (43) is located inside a part of said casing (22) of the motor (18) in contact with the cooling water and electrically connected with a control unit (47) so as to interrupt the power supply to said motor (18) in case of detection of a temperature above a predetermined limit. <IMAGE> |
