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Coupling for submersible screw pump

An oil-submersible screw and coupling technology, used in pumps, pump components, machines/engines, etc., can solve problems such as shaft breakage, and achieve the effect of preventing breakage, connecting firmly and reliably, and reducing the risk of failure.

Pending Publication Date: 2021-08-10
XINXIANG XIAFENG ELECTRIC LTC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a coupling for submersible screw pumps, to at least solve problems such as shaft fractures caused by unit bending and alternating loads in inclined wells and horizontal wells

Method used

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  • Coupling for submersible screw pump
  • Coupling for submersible screw pump
  • Coupling for submersible screw pump

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Embodiment Construction

[0032] The technical solutions in the embodiments of the present invention will be clearly and completely described below, obviously, the described embodiments are only some of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the present invention belong to the protection scope of the present invention.

[0033] In the description of the present invention, the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", " The orientations or positional relationships indicated by "top", "bottom", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific orientation, so they cannot be understood as Limitations on the Inven...

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Abstract

The invention belongs to the technical field of couplings for conveying rotary motion, and particularly relates to a coupling for a submersible screw pump. The coupling comprises a flexible rod, an output shaft connecting sleeve and a rotor connecting sleeve, wherein the two ends of the flexible rod are an output shaft connecting end and a rotor connecting end respectively; each of the output shaft connecting end and the rotor connecting end is provided with a stop portion, a protector output shaft or the output shaft connecting sleeve and a screw pump rotor or the rotor connecting sleeve are provided with stop structures, and the stop portions are in stop fit with the stop structures in the circumferential direction; the output shaft connecting end and the protector output shaft are provided with external threads respectively, the two ends of the output shaft connecting sleeve are provided with internal threads respectively, and the output shaft connecting end and the protector output shaft are in threaded connection with the output shaft connecting sleeve; and the rotor connecting end and the screw pump rotor are provided with external threads respectively, the two ends of the rotor connecting sleeve are provided with internal threads respectively, and the rotor connecting end and the screw pump rotor are in threaded connection with the rotor connecting sleeve. A connecting rotating device can bear alternating load of complex motion of the screw pump, and the fault risk is reduced.

Description

technical field [0001] The invention belongs to the technical field of couplings for transmitting rotary motion, and in particular relates to a coupling for submersible screw pumps. Background technique [0002] Submersible progressive cavity pump units used to lift fluids from deep wells typically consist of a series of interconnectable modular components, including motors, protectors and progressive cavity pumps. Each section consists of an outer radial housing and inner drive shaft elements. The drive shaft elements of different adjacent sections are connected to each other in a coupling assembly by some connecting means, conventionally a set of mating spline connections. During the operation of a conventional screw pump with a splined connection, the motor drives various shaft elements to transmit power to the screw pump to deliver the fluid to the surface, the drive shaft element rotates clockwise and the axial force is directed towards the motor, resulting in a compres...

Claims

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Application Information

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IPC IPC(8): F04C2/107F04C15/00
CPCF04C2/107F04C15/0061
Inventor 赵化科勾国伟岳修业李庆贺殷晓刚袁溟洋
Owner XINXIANG XIAFENG ELECTRIC LTC
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