Canned motor pumps for the conveying of liquefied gases
More and more seal-less canned motor pumps are being employed for the conveying of liquefied gases. They are distinguished by operational safety, an extremely low level of noise, low life cycle costs and in particular by the high degree of environmental friendliness, alongside their compactness and easy installation. They are a safe alternative to conventional centrifugal pumps and magnetic drive pumps.
Canned motor pumps are distinguished by an integral, compact aggregate. The motor and hydraulic section is one unit, where the rotor and impeller are arranged on a communal shaft. The rotor is guided by two identical medium-lubricated radial bearings. The stator of the drive motor is segregated from the rotor compartment by a thin can. The rotor compartment forms a communal compartment with the casing part of the pump, which must be filled with the transport medium prior to the start up or commissioning. The heat loss of the motor is dissipated by a partial flow between the rotor and stator.
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