Abstract：One of the main technology of the submersible motor is the properties of the seals, especially the properties of the seals.The mechnical seal is one of seal installation which has a good property of seal and its power loss is low. But the accidental damage is easily occured on the mechnical seal, decreasing the work pressure of the mechnical seal to lengthen its life is necessary. Using series connection or combination of seals, especially using release pressure technology for first mechnical seal, can decrease the work pressure of the mechnical seal to lengthen its life. There introduces a reserved technoloty in this article: Positive pressure sealing system, also named driving positive pressure sealing system. Using this system, the pressure inside the motor would higher than environment pressure outside. The motor can operate a period of time even though there is a little of water leaked into the motor caused by the damage of the mechnical seal.
周巧霞；戴尚礼；沈骏. 干式潜水电机的正压密封系统技术[J]. 排灌机械工程学报, 2002, 20(5): 42-45.
ZHOU Qiao-xia, et al. Positive Pressure Sealing System Technology for Submersible Motor Dry inside. Journal of Drainage and Irrigation Machinery Engin, 2002, 20(5): 42-45.
