Sealed transmission method and device thereof

Abstract

The invention discloses a sealing method of outputting electric machine power applied in oil field high-voltage water injection well, as well as its device. It installs electric machine on the fix base, which is connected with the shaft of the electric machine by conversion shaft, and it dips the electric machine to work in a sealed container full of insulting oil and with a flexible case. By working of the electric machine in a sealed storehouse, it largely improves the working condition for the electric machine; by the retractility of the flexible sealing case, ensures the balance of internal and external pressures of the sealed cavity and reduces the pressure difference between two dynamical sealed ends, making the electric machine not acted by axial force. It has advantages of more stable working of electric machine, good waterproofing property, longer service life of electric machine, etc, and it largely reduces the effect of external environment on the electric machine and that of external high-pressure water on the axial acting force and the machine can normally work at the high pressure of the well 60MPa.

Description

Technical field: [0001] The invention relates to a sealing transmission method and a device thereof, in particular to a sealing transmission method and a device for outputting motor power in an oilfield high-pressure water injection well, and belongs to the technical field of motor transmission. Background technique: [0002] At present, in the prior art, the motor is generally directly used to drive or drive the device that requires power. Because in the process of power transmission, the driven object is easy to force the motor axially under the action of external pressure, thus affecting The normal operation of the motor, especially the motor working in the high-pressure water injection well in the oil field, because the motor and the power output adapter shaft connected to the motor are often in the axial direction of the high-pressure water in the well, the motor has to bear a large load during operation. Axial force, so the motor is easily damaged by wear and water. ...

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Problems solved by technology

[0002] At present, in the prior art, the motor is generally directly used to drive or drive the device that requires power. Because in the process of power transmission, the driven object is easy to force the motor axially under the action of external pressure, thus affecting The normal operation of the motor, especially the motor working in the high-pressure water injection well in the oil field, because the motor and the power output adapter shaft connected to the motor are often in the axial direction of the high-pressure water in the well, the motor has to bear a large load during operation. Axial force, so the motor is easily damaged by wear and water

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