Front end cover sealing structure for preventing oil leakage of high-speed generator

Abstract

The invention belongs to the field of alternating-current generators, and relates to a front end cover sealing structure for preventing oil leakage of a high-speed generator. The structure comprises a bearing bush (1), a driving end cover (2), a first O-shaped sealing ring (3), a bearing cover (4), a sealing blocking cover (5), six metal sealing check rings (6), an outer sealing ring blocking sleeve (8), an inner sealing ring blocking sleeve (9) and a second O-shaped sealing ring (11). According to the structure, a motor is realized by adding a metal dynamic seal and a non-metal static seal at parts such as a front end cover assembly and a bearing chamber assembly of the motor and changing the shape of a sealing cover at the front end and a matched backlash, and the design of the structure can realize reliable sealing of a bearing and prevent lubricating oil from entering the bearing. The sealing structure is simple, the implementation effect is good, and the structure is more suitable for system complex working environments.

Description

technical field [0001] The invention belongs to the field of alternators, and relates to a front-end cover sealing structure for preventing oil leakage of a high-speed generator. Background technique [0002] The invention of the sealing structure is based on the coaxial rotation of a high-speed generator and a certain main reducer. The main reducer has splashed lubricating oil. Will be destroyed, causing the grease inside the bearing to lose or even dry up. Under the high-speed operation of poorly lubricated bearings, the internal friction of the bearing increases to generate high temperature, the bearing cage is damaged, and the balls are deformed and displaced, resulting in the misalignment of the inner and outer rings of the bearing, which leads to failure. Severe sweeping of components such as stator and rotor near the end of the damaged bearing caused serious failure of the generator. Contents of the invention [0003] The purpose of the present invention is: the s...

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Problems solved by technology

[0002]The invention of the sealing structure is based on the coaxial rotation of the high-speed generator and a certain main reducer. The main reducer has splashed lubricating oil. When the seal of the generator is poor, once Lubricating oil leaks into the inner part of the grease lubricated bearing of the generator, and the grease of the bearing will be destroyed, resulting in the loss or even drying up of the grease inside the bearing

When the poorly lubricated bearing runs at high speed, the internal friction of the bearing increases to generate high temperature, the bearing cage is damaged, and the balls are deformed and displaced, resulting in the misalignment of the inner and outer rings of the bearing, which leads to failure

Severe bore sweeping of components such as stator and rotor near the damaged bearing end, causing serious failure of the generator

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