An oil filter-proof end cover for a super-power motor

Abstract

The invention discloses an oil filtration prevention end cap used for a super-power motor. The oil filtration prevention end cap comprises a lower end cap body, an upper end cap body, a shielding can and a louver, wherein the upper end cap body is connected with the lower end cap body through seam-butting plates, the shielding can is fixed to the upper end cap body and connected with the lower end cap body, and the louver is arranged outside the shielding can. The lower end cap is used for installation of a base type sliding bearing supporting platform and simultaneously combined with the shielding can to isolate a sliding bearing from a negative pressure zone inside a motor so that oil filtration can be prevented. When the oil filtration prevention end cap is used in the large-power high-speed motor, the normal oil filtration problem of the sliding bearing caused by negative pressure is effectively solved, and the operation cost and the maintenance cost of a user are reduced. Meanwhile, the split type end cap brings convenience to dynamic balancing of the whole machine, and the oil filtration prevention end cap has the advantages of being easy to operate, low in cost, reliable in operation and the like.

Description

technical field [0001] The invention belongs to the technical field of motors, and relates to an end cover, in particular to an end cover for an ultra-high-power high-speed asynchronous motor with a power above 10,000 kW. Background technique [0002] At present, there are two types of sliding bearings for high-power motors, seat-type sliding bearings and end cover-type seat-type sliding bearings. The seat-type sliding bearings are installed on the motor base, thereby increasing the axial size of the motor, which is not conducive to the deflection of the motor. Therefore, it is rarely used in high-speed motors. The end cover type seat type sliding bearing is installed on the support platform of the end cover, such as figure 1 As shown, it occupies less space, can shorten the axial dimension of the motor, and is beneficial to the deflection and critical speed of the motor, so it is widely used in high-power high-speed motors. The inner fan of a high-power high-speed motor is...

AI Technical Summary

Problems solved by technology

The inner fan of a high-power high-speed motor is usually a propeller-type axial flow fan, which will form a large negative pressure zone between the fan and the bearing inner cover, so that the oil gas in the bearing passes through the air seal cover on the bearing inner cover and is sucked Inside the motor, damage to the motor insulation causes the motor to fail, causing a lot of maintenance costs to the customer, and a great waste of lubricating oil

Images