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A kind of gearbox-free motor direct drive device and operation control method

A direct-drive, box-type technology, applied in electromechanical devices, measuring devices, and mechanical energy control, etc., can solve the problems of complex ground structure, high one-time investment, and difficult management of pumping units, and achieve low one-time investment and safety. The effect of high coefficient and few transmission links

Active Publication Date: 2022-04-26
PETROCHINA CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to propose a gearless motor direct drive device and operation control method, which solves the problems of complex ground structure of the pumping unit, need for prefabricated foundation, high one-time investment, low operating efficiency, and difficult management

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  • A kind of gearbox-free motor direct drive device and operation control method
  • A kind of gearbox-free motor direct drive device and operation control method
  • A kind of gearbox-free motor direct drive device and operation control method

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Embodiment Construction

[0060] The following will clearly and completely describe the technical solutions of the embodiments of the present invention with reference to the accompanying drawings of the embodiments of the present invention.

[0061] A gearbox-free motor direct drive device, including: a casing assembly, a transmission component, a load monitoring unit, a hydraulic energy storage unit, and a wellhead matching unit;

[0062] The casing assembly seals the transmission assembly and the load monitoring unit inside;

[0063] A screw 105 and a motor rotor 102 are arranged in the middle of the transmission assembly, and a motor stator 103 is arranged outside the motor rotor 102. The rotational movement of the motor rotor 102 drives the polished rod 201 in the load monitoring unit to reciprocate up and down, converting electric energy into system lifting kinetic energy;

[0064] The load sensor 204 in the load monitoring unit is installed between the square clip 202 and the lead screw 105 for ...

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Abstract

The invention relates to the technical field of oil field mechanical oil recovery, and belongs to a direct drive device of a gearbox-less motor and an operation control method. The invention discloses a gearless box-type motor direct drive device, comprising: a casing assembly, a transmission assembly, a load monitoring unit, a hydraulic energy storage unit, and a wellhead matching unit; the casing assembly combines the transmission assembly, the load monitoring The unit is sealed inside; the transmission assembly is used to convert electrical energy into system lifting kinetic energy; the load monitoring unit is used to monitor the operating conditions of the oil well; the hydraulic energy storage unit is located under the transmission assembly for downstroke energy Accumulation and reuse of upstroke energy; the wellhead supporting unit is connected to the wellhead flange to support the casing assembly. The invention also discloses an operation control method of the gearbox-less motor direct drive device. The invention has the advantages of simple structure, few transmission links, high transmission efficiency, safety and reliability, intelligence and high efficiency, no need for prefabricated foundation, and low one-time investment Etc.

Description

technical field [0001] The invention relates to the technical field of oil field mechanical oil recovery, and belongs to a direct drive device of a gearbox-less motor and an operation control method. Background technique [0002] Since the conventional beam pumping unit was invented, it has been occupying a dominant position in mechanical oil extraction equipment. The working principle of this kind of beam pumping unit is to convert the rotational motion of the motor into the vertical motion of the donkey head through the motor, belt, crank, reduction box and four-bar linkage, and drive the sucker rod string and the downhole pumping unit. The oil pump reciprocates up and down to lift the downhole oil-water-gas mixture to the ground. However, this beam pumping unit has problems such as complicated mechanism, high manufacturing cost, inconvenient transportation and installation, heavy maintenance workload and high energy consumption. With the continuous development of oil fi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B47/02F04B17/03E21B43/00H02K7/06G01L5/00F15B1/04
CPCF04B47/02F04B17/03E21B43/121H02K7/06G01L5/0028F15B1/04Y02E60/16
Inventor 张凯波侯宇孙春龙常永奎王国庆郑东志王思淇宋胜刚王淼峰熊雪
Owner PETROCHINA CO LTD
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