Sealing structure at shaft through position of high-temperature-resisting and high-pressure-resisting motor

Abstract

The invention relates to a sealing structure at a shaft through position of a high-temperature-resisting and high-pressure-resisting motor. The sealing structure at the shaft through position of the high-temperature-resisting and high-pressure-resisting motor is characterized in that two mechanical sealing parts which are arranged in parallel are arranged between a motor end cover and a motor main shaft. The outer side of the motor end cover is connected with a baffle through a seam allowance and a fastening bolt. The baffle on the radial outer side of the seam allowance is provided with an O-shaped sealing ring through an annular groove, and the matched portion of the baffle and the motor main shaft is provided with an axial plane sealing part. In the structure, due to the fact that the three levels of sealing parts are arranged, leakage of the shaft through position of the motor can be prevented shaft under the high temperature of 200 DEG C and the fluid pressure of 1.8MPa, and therefore the sealing structure is particularly suitable for being used in places where high-temperature and high-pressure steam fluid media or high-temperature and high-pressure steam environments exist. The sealing structure at the shaft through position of the high-temperature-resisting and high-pressure-resisting motor has the advantages of being reasonable in design, good in sealing effect and capable of ensuring that the motor operates safely and reliably.

Description

technical field [0001] The invention belongs to the technical field of motor accessory parts, and relates to a sealing structure at the penetration part of a high-temperature and high-pressure motor shaft. Background technique [0002] With the development of high-tech industry, more stringent requirements are put forward for motor products, requiring the motor to operate safely and reliably in high-temperature, high-pressure and conductive fluid media. In the prior art, the sealing structure used for the penetration of the motor shaft usually adopts ordinary V-shaped rings, skeleton oil seals or shaft surface seals. Under high pressure, this sealing structure is prone to aging or leakage in high temperature and high pressure fluid medium or high temperature and high pressure steam. Once the high-temperature and high-pressure fluid medium or high-temperature and high-pressure steam enters the motor, it will cause the insulation failure of the motor winding and cause equip...

AI Technical Summary

Problems solved by technology

In the prior art, the sealing structure used for the penetration of the motor shaft usually adopts ordinary V-shaped rings, skeleton oil seals or shaft surface seals. Under high pressure, this sealing structure is prone to aging or leakage in high temperature and high pressure fluid medium or high temperature and high pressure steam

Once the high-temperature and high-pressure fluid medium or high-temperature and high-pressure steam enters the motor, it will cause the insulation failure of the motor winding and cause equipment accidents and even personal injury.

Therefore, the conventional shaft-penetrating sealing structure cannot be used in a high-temperature and high-pressure fluid medium or in a high-temperature and high-pressure steam environment

So far, there is no sealing structure suitable for the penetration of the motor shaft in the high-temperature and high-pressure fluid medium or high-temperature and high-pressure steam environment

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