Anti-reverse automatic separation oil recovery screw pump direct drive system

Abstract

The invention relates to an anti-reverse auto-separation oil extraction screw pump direct-drive system to prevent reverse accidents. The anti-reverse auto-separation oil extraction screw pump direct-drive system comprises a direct drive motor, wherein a hollow shaft of the direct drive motor is connected with and drives a spline shaft sheathed in the hollow shaft, the lower end of the spline shaft is downwards connected with, through an axial separation slippage type coupler, and drives a lower short shaft for driving a supporting bearing block, the supporting bearing block is connected with and drives a polished shaft provided with a sealing box, and the lower end of the polished shaft is provided with a connector used for downwards connecting with a sucker rod; the spline shaft is provided with a reverse rotation lifting clutch separation device at the upper end, can be lifted by counterforce to be separated from the short shaft when the spline shaft is driven reversely to rotate, and is locked by a manual releasing and locking mechanism or an automatic releasing and locking mechanism when reversely rotating to the position more than or equal to 1 / 3 circle and less than one circle. The direct drive motor is a direct-drive permanent motor, and is electronically connected with a screw pump ground direct drive control cabinet provided for a control chamber, and the spline shaft is an involute spline shaft. The anti-reverse auto-separation oil extraction screw pump direct-drive system provided by the invention has the advantages that the mounting operation is simple, the operation and maintenance are convenient, electricity can be saved in continuous working, the running is stable and safe, and an anti-reverse effect can be reliably realized.

Description

technical field [0001] The invention relates to a driving device for an oil production screw pump, in particular to an anti-reverse automatic separation oil production screw pump direct drive system. Background technique [0002] The surface driving device is an important part of the screw pump oil production, which transmits the ground power source to the downhole screw pump rotary oil production operation through the sucker rod. At present, the ground driving devices used in various oil fields have the following forms, spur gear transmission, pulley transmission, bevel gear transmission, motor direct drive transmission (permanent magnet motor, switched reluctance motor, series excitation motor, etc.), but the above driving devices There is a common unsafe hidden danger in use, because it does not deviate from the traditional connection method, that is, the driving device rotates a large pulley, and there is a square clip on the head. The square clip is stuck on the polishe...

AI Technical Summary

Problems solved by technology

Due to seasonal changes on the ground, large temperature differences, or line failures and control switch failures, the brakes may be out of control when the machine is stopped, and there may be accidents such as reverse speeding off the rod, pulley throwing out, polished rod bending, and square clips flying away.

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