1. The rotor oil film cooling: this cooling method is in the Ji'nan pipeline centrifugal pump at the entrance to connect an oil pipe, with uniform drops of cooling oil to take away the heat of the rotor.
2. Air cooling: the so-called wet Jinan pipeline centrifugal pump is the air inhaled by the inter stage or two - stage pumps by compression, through absorption and phase difference of combination muffler transmission.
3. Cooling water: Jinan pipeline centrifugal pump due to transportation and compressed gas and produces heat, the heat must be from the rotor to casing and sporadic.
4. Rotor internal cooling: in order to make Jinan pipeline centrifugal pump working under higher differential pressure, to take more effective cooling method is employed for the rotor oil cooling, at the two ends of the pump shaft is respectively provided with oil holes, oil diameter shaft driven, the rotor wall again from the other end of the discharge.
