Amphibian permanent magnet submersible motor with protection level IP68

Abstract

The invention discloses an amphibian permanent magnet submersible motor with a protection level IP68. The amphibian permanent magnet submersible motor comprises a machine seat, a shaft extension end cap, a shaft extension end bearing outer cover, a shaft extension end bearing inner cover, a stator, a rotor, a shaft run-through sealing device, a cable sealing device, a water leakage alarm device and an outgoing cable, wherein the shaft run-through sealing device comprises two annular sealing cavities coaxial with a rotor shaft, and the two annular sealing cavities are formed by encircling firstsealing sleeves, second sealing sleeves, sealing covers and shaft sleeves; the shaft sleeves are made of a wear-resistant material and are thermally sleeved on the rotor shaft; the shaft sleeves andthe rotor shaft are fixed by fastening screws; framework oil seals are arranged in the two annular sealing cavities; and the annular seal cavities are filled with lubricating grease during working. The sealing structure of the motor is reliable, so as to prevent dust and water at a certain pressure from entering the motor; and the motor can meet the sealing requirements of IP68 more easily duringassembling.

Description

technical field [0001] The technical field of the explosion-proof motor of the present invention is specifically an amphibious permanent magnet submersible motor with protection grade IP68. Background technique [0002] Due to the increasing energy consumption in recent years, high-efficiency and energy-saving motors have gradually become mainstream products. With the development of science and technology, the performance of permanent magnet materials has been improved, the manufacturing process of motors has been improved, and various drive control technologies have emerged. High-efficiency and energy-saving permanent magnet motors have been valued and promoted by people. As a high-efficiency and energy-saving motor system, permanent magnet synchronous motors have been widely used in many fields such as new energy vehicles, rail transit, coal, wind power, oil drilling, ships and national defense. [0003] In the existing permanent magnet submersible motor, the whole motor ...

AI Technical Summary

Problems solved by technology

[0003] In the existing permanent magnet submersible motor, the whole motor works under water. When the motor is working, the inner cavity of the motor cannot enter the water, otherwise the stator winding of the motor will be burned, and the permanent magnet in the rotor will be damp and corroded, resulting in demagnetization or even loss of magnetism. , affecting bearing lubrication and service life

In addition, the permanent magnet submersible motor is a fully enclosed structure. When it is used in the air environment on land, due to the lack of a good cooling system, the temperature rise of the permanent magnet submersible motor will rise sharply, and the stator winding will be burned in a very short time. The permanent magnet demagnetizes or even loses magnetism, which will cause the motor to be scrapped

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