Flexible dragging method of oil pumping unit

A kind of oil pumping unit and flexible technology, which is applied in the field of flexible dragging of oil pumping units, and can solve the problems of not completely solving the problem and so on.

Pending Publication Date: 2021-06-25
大庆恒特电机有限公司
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the "Eighth Five-Year Plan" period, Daqing Petroleum Administration Bureau and Daqing Petroleum Institute jointly undertook the national project "Research on Improving the Efficiency of Pumping Well System", many scientific research institutes and universities have invested manpower and financial resources in research and development of energy-saving pumpi

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Flexible dragging method of oil pumping unit
  • Flexible dragging method of oil pumping unit
  • Flexible dragging method of oil pumping unit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] A flexible dragging method of a pumping unit according to the present invention is to design the stator winding 8 in the AC motor casing 1 as two independent star-connected windings, and when the pumping unit is started, the two independent star-connected windings are connected to the power grid in parallel After starting, the two independent star-connected windings are automatically connected to the grid in series.

[0016] The AC motor includes a housing 1, a rotor shaft 2, a front end cover 3 and a rear end cover 4, and a transmission pulley 6, a flywheel 5, a front end cover 3, a housing 1, and a stator are sequentially set on the rotor shaft 2 from front to back. 15. The rotor 16, the rear end cover 4 and the self-cooling fan 7; at the same time, the rotor shaft 2 of the AC motor is designed as a hollow rotor shaft to replace the yoke part of the lamination, and the rotor 16 of the AC motor has a frequency-sensitive variable frequency integrated with the rotor shaft...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a flexible dragging method of an oil pumping unit and relates to the oil field oil extraction technology. An alternating current motor rotor shaft is a hollow rotor shaft, a stator winding in a shell is composed of two independent star wiring windings, and when the oil pumping unit is started, the two independent star wiring windings are connected into a power grid in parallel; after starting is completed, the two independent star wiring windings are automatically switched to be connected into a power grid in series. When two sets of independent star wiring windings of the alternating-current motor are connected into a power grid in parallel for operation, the beam-pumping unit can be quickly started within 10-20 seconds, so the average power factor of a dragging system of the beam-pumping unit is improved from about 0.3 to 0.85 or higher, and average operation efficiency is far higher than that of an electromagnetic speed regulation motor system and a variable-frequency speed regulation system; after the pumping unit is started, two sets of identical independent star wiring windings are automatically connected in series to a power grid for operation, so the average output power of the alternating-current motor is automatically and accurately matched with the average consumption power of the pumping unit during operation, dynamic full balance during operation of the pumping unit is realized, and meanwhile, a problem of reverse power generation causing serious waste of electric energy is solved.

Description

technical field [0001] The invention relates to oil recovery technology in oilfields, in particular to a device that can highly self-adaptively follow the instantaneous speed change of a beam pumping unit, and use flexible torque dragging to eliminate the severe pulsation, reverse pull and load torque of the beam pumping unit. Flexible dragging method of pumping unit for "big horse-drawn cart" phenomenon. Background technique [0002] The beam pumping unit is a heavy-duty mechanical oil production equipment, and its various transmission parts weigh in tons, and the dynamic inertia force is very large during the transmission torque process. After the pumping unit is started under heavy load, it drives the beam pumping unit again under the condition of high and frequent severe pulsation of load torque, in order to start the beam pumping unit and tow the Torque peak, it is forced to use tens of kilowatts of high-power motors with frame size 280 or even 315 to complete the star...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H02P1/26H02P25/18H02P23/26H02K3/28
CPCH02P1/26H02P25/188H02P23/26H02K3/28
Inventor 江允良
Owner 大庆恒特电机有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap