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Oilfield oil pumping machine energy-saving method and startup wheel

An energy-saving start-up and pumping unit technology, which is applied to earth-moving drilling, mechanical equipment, transmission devices, etc., can solve problems such as unsatisfactory power-saving effect, reduce installed capacity, extend start-up time, average electrical efficiency and average electrical power. The effect of factor increase

Inactive Publication Date: 2008-08-13
武达兼
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

But in fact its power-saving effect is still not ideal. The power-saving rate of pumping units using permanent magnet synchronous motors is mostly around 10%, and only a few cases reach or exceed 15%.

Method used

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  • Oilfield oil pumping machine energy-saving method and startup wheel
  • Oilfield oil pumping machine energy-saving method and startup wheel
  • Oilfield oil pumping machine energy-saving method and startup wheel

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Embodiment Construction

[0034] The present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that the described embodiments are only intended to facilitate the understanding of the present invention, rather than limiting it in any way.

[0035] 1. Utilize the starting wheel of the present invention to make the small motor also start the pumping unit

[0036] Such as figure 2 The structural representation of the energy-saving friction type starting wheel of the pumping unit of the present invention is shown in the following diagram:

[0037] The adjustable mechanical torque limiting part 2 in the wheel housing 1 includes: left friction disc 21, self-lubricating bearing 22, motor shaft 23, right friction disc 24, disc 25, spring 26, nut 27, bolt 28, guard plate 29 , the first friction plate 30, the second friction plate 31.

[0038] The starting wheel of the present invention is installed on the motor shaft 23, and at the start-up stage of ...

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Abstract

The present invention relates to electricity-saving technology of various beam type oil extractor in oil field. An energy-saving startup wheel of oil field oil extractor which can prolong starting time, decrease equipped capacitor and a method of energy-saving are disclosed. The startup wheel includes: adjustable mechanical limit twist member placed in the wheel case, non-rigid connection between wheel case and electrical machine shaft. Method: computing new electrical machine minimum theoreticl horsepower by using oil extractor static twist resistance, selecting average load ratio, selecting little capacity new electrical machine with high slip ratio, computing oil extractor power regulated by flywheel; computing startup wheel outer dimension, adjusting startup wheel limit-torsional moment;determining flywheel minimum inertia to design flywheel; correcting static twist resistance chart according to increased additional weight number on the beam, verifying average load ratio of new electrical machine. Because the invention adopts startup wheel, flywheel, beam balancing and selecting corresponding new electrical machine, electricity-saving ratio lies in 30-50% is obtained in economical, maximum, safe and reliable, and comparing with the present technology, it induces the installation power reducing greatly 1 / 3-1 / 4.

Description

technical field [0001] The invention belongs to the technical field of oil collection, and relates to the power-saving technology of various beam pumping units in oil fields. Background technique [0002] The beam pumping unit composed of crank and connecting rod has a simple structure and reliable operation, and is widely used in oil fields at home and abroad. The mass and moment of inertia of the moving parts of the beam pumping unit are large. In order to ensure that the pumping unit can start smoothly, a motor with much larger power than the actual need has to be configured. On the other hand, it is also due to the characteristics of the crank-link mechanism itself. Even if the eccentric balance weight is adjusted to the best position, the torsional resistance drop transmitted to the motor shaft is still very large. Therefore, when entering normal operation, the average load rate of the motor is usually very low, causing the motor to run in the low-efficiency area for ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/00F16H33/02H02P23/00
Inventor 武达兼
Owner 武达兼
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