A special reducer for small diameter and high torque screw pump

Abstract

The invention belongs to the technical field of reducers, and discloses a special reducer for a small-diameter high-torque screw pump, comprising a casing, wherein a power input end and a power output end are respectively coaxially arranged in the casing near its two ends. A first-stage planetary gear deceleration assembly connected to the power input end is arranged inside, and a second-stage planetary gear deceleration assembly, a first-stage planetary gear deceleration assembly and a second-stage planetary gear are arranged in the outer casing. The deceleration assembly is connected by transmission, and a bearing device for supporting and ensuring the coaxial rotation of the power input end, the power output end, the first-stage planetary gear deceleration assembly and the second-stage planetary gear deceleration assembly is installed in the casing. The overall structure of the present invention is simple. It is easy to use, the overall outer surface diameter is small, the torque transmission force is large, the service life is long, the overall structure is stable, and the transmission efficiency is high.

Description

technical field [0001] The invention belongs to the technical field of reducers, and in particular relates to a special reducer for small-diameter and high-torque screw pumps. Background technique [0002] Among the related technologies, the submersible screw pump system is a mechanical oil recovery equipment developed rapidly in recent years, and in recent years, the submersible screw pump has been deeply researched and widely used, especially in the setting of high sand content and high viscosity. It has unique application advantages in vertical wells (deep wells, inclined wells, horizontal wells and other complex wells); the submersible screw pump has the characteristics of simple structure, convenient operation, obvious energy saving, strong adaptability, etc., which can effectively protect and tap oil and gas resources and reduce oil production. cost, has been widely used. [0003] China has used submersible screw pumps to exploit oil and gas resources in Liaohe Oilfie...

AI Technical Summary

Problems solved by technology

[0005] The overall design of the above-mentioned existing reducers is unreasonable. There should be a bearing between the planetary gear and the planetary carrier. The bearing is used to support the rotation of the planetary gear, and the bearing of the existing planetary gear is set at the center Between the shaft and the planetary gear, this limits the overall shape of the planetary gear, resulting in a smaller modulus of the planetary gear, and the overall structural strength of the planetary gear is low and easily damaged

[0006] And the diameter, torque, speed adjustment, service life and reliability of the reducer are the key parameters of the reducer. In the existing technology, the minimum diameter of the reducer in the submersible screw pump has reached 85.85mm, the torque is 435Nm, and the service life is 30,000 hours, the data of the reducer is currently an insurmountable technical bottleneck

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