Differences distinguishing oil-immersed submersible pumps from water-immersed counterparts encompass :
1. Propagation methods for thermal management differ. Oil-immersed submersible pumps employ mechanical oil as a coolant, while water-immersed pumps utilize water.
2. Environmental implications vary. Should leakage occurs, a water-immersed pump poses no environmental contaminant risk, while an oil-immersed one does not pose potential oil contamination risks.
3. Applicable scenarios contrast. Flood circumstances necessitate water-immersed pumps involvement. Oil-immersed pumps predominantly cater to agricultural drainage and irrigation, water tower water distribution, fountain function, flood mitigation and drainage, municipal construction drainage, among others.
4. Service life disparity exists. The internal mechanical grease lubrication mechanism and lubricating conditions of oil-immersed pumps surpass those of water-immersed pumps, thereby extending their lifespan.
The oil-immersed submersible electric pump constitutes a versatile shallow water drainage and irrigation apparatus integrating components of both pumps and machines. Unique to this device is its interior filled with mechanical oil, transformation of the operating conditions of the mechanical seal, making it difficult for reservoir water to infiltrate into the motor's interior. Augmented by rapid internal heat dissipation and superior cooling efficiency, it curtails the motor's thermal excursion, subsequently escalating the submersible electric pump's overload tolerance. Furthermore, the ball bearings functioning within oil-immersed submersible electric pumps benefit from oil immersion in providing optimal lubrication, underlining their extended bearing cooling expenditure compared to other analogous submersible electric pumps.