Direct drive permanent magnet synchronous motor for screw pump

A permanent magnet synchronous, screw pump technology, applied in synchronous motors with stationary armatures and rotating magnets, electric components, machines/engines, etc., can solve problems such as insurmountable defects, waste of resources, inability to adjust torque, etc. Achieve the effect of preventing oil leakage from packing, high power utilization efficiency, and solving pump rod fractures
CN1996719AActive Publication Date: 2007-07-11HANGZHOU XO ELEVATOR
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Patent Information

Authority / Receiving Office
CN ยท China
Current Assignee / Owner
HANGZHOU XO ELEVATOR
Publication Date
2007-07-11

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Abstract

This invention relates to screw bar pump direct drive permanent simultaneous motor in the earth drive mechanic oil sampling device, which comprises permanent magnetic simultaneous motor and the device matched with screw pump, wherein, the invention is characterized by the following: its axis down part uses push force for roller bearing; the drive device uses permanent simultaneous motor matching with connection device meshed with screw bar. This invention saves the band transmission and gear deceleration case to provide torque times more than four times.
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Description

technical field

[0001] The invention relates to a direct-drive permanent-magnet synchronous motor for a screw pump, a drive device for a ground-driven screw pump, and belongs to mechanical oil recovery equipment. Background technique

[0002] There are usually two driving methods for the screw pump oil production equipment driven by the ground: 1. The traditional screw pump pumping unit driven by a horizontal asynchronous motor, which uses 90ยฐ bevel gears to reduce the direction and drive the belt to increase the torque. The disadvantages of this structure are: 1. The transmission efficiency is low and the energy consumption is high. This is because the screw pump generally belongs to the full-load start-up and light-load operation state. In order to overcome the mechanical loss in belt transmission or gear transmission and ensure a sufficient torque when starting, people usually adopt the method of increasing the motor capacity, thus causing a waste of resources for large h...

Claims

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