Classification and characteristics of submersible motors
Dry submersible motor:
The interior of the dry submersible motor is filled with air, and the shaft extension end is equipped with mechanical sealing devices and rubber oil seals, which can prevent moisture and dampness from entering the interior. Its structure is simple, similar to land motors, and suitable for environments with low waterproof requirements.
Oil filled submersible motor:
The interior of the oil filled submersible motor is filled with insulating lubricating oil, supported at both ends by rolling bearings, and the upper part uses hard alloy as a mechanical seal. This structure can prevent external moisture and dampness from entering the inner cavity, while also preventing the leakage of insulating lubricating oil. Suitable for occasions with high mud and sand content, and can be used in both inclined and horizontal states.
Water filled submersible motor:
The inner cavity of the water filled submersible motor is filled with clean water (usually pure soft water), and the shaft extension end is equipped with a mechanical seal device and a rubber oil seal, which can prevent external sewage or mud and sand impurities from entering the inner cavity. This type of electric motor is suitable for situations that require high wear resistance and high thrust.
Shielded submersible motor:
The stator of the shielded submersible motor is tightly sealed with a thin-walled shielding sleeve made of non-magnetic stainless steel, an end ring, and a casing, and filled with solid filling material. This structure can effectively prevent moisture and impurities from entering, making it suitable for occasions with extremely high sealing requirements
Application scenarios of submersible motors:
Applicable to water intake, irrigation, drainage, sewage treatment and other scenarios in underground, rivers, lakes, oceans and other waters.
Due to its need to work underwater, submersible motors must have a high protection level (IP68), good corrosion resistance, and electrical insulation performance.
