| 摘要 |
The purpose of the present invention is to increase the life of sacrificial anodes used in pump devices such as seawater pumps is increased, and increase the life of electrolytic protection systems for seawater pump devices. A pump device (30) is provided with a protection system (70) having a measurement unit (20) in a part of a column pipe (33) that is immersed in seawater and a temperature control device (17) at the location where the pump device (30) is installed. In this protection system (70), a sacrificial anode (3) that is connected electrically to the column pipe (33) and can be temperature-controlled is attached via a heating and cooling unit (11) and a heat conducting sheet (10). A temperature control device (17) controls the temperature of the sacrificial anode (3) by means of the heating and cooling unit (11) attached via the heat conducting sheet (10) on the sacrificial anode (3) on the basis of the temperature of the sacrificial anode (3) measured by the measurement unit (20). |
