Pulley block extended-range oil pumping unit

A technology of extended range and pumping unit, which is applied in the direction of exploitation fluid, wellbore/well parts, earthwork drilling and production, etc. It can solve the problems of inability to extract oil, narrow use range, small stroke, etc., and achieves easy start-up, convenient operation, The effect of improving the service life
CN103556975AInactive Publication Date: 2014-02-05德阳恒联机械制造有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
德阳恒联机械制造有限公司
Publication Date
2014-02-05
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a pulley block extended-range oil pumping unit which comprises a base, a driving mechanism, a driving wheel, a lifting rope, a guide wheel and a range extending device, wherein the range extending device comprises a first fixed pulley block, a second fixed pulley block, a guide rail and a traveling trolley arranged on the guide rail; the guide rail is fixed above the base; the first fixed pulley block is arranged at one end part of the guide rail; the second fixed pulley block is fixed on the traveling trolley; the driving mechanism is connected with the driving wheel fixed on the base; the driving wheel is connected with the traveling trolley and used for driving the traveling trolley to do linear reciprocating motion on the guide rail; the guide wheel is fixed above the guide rail; one end of the lifting rope is a fixed end; the other end of the lifting rope is wound around the first fixed pulley block and the second fixed pulley block and then is connected with a wellhead oil pumping device through the guide wheel. The pulley block extended-range oil pumping unit can quickly and smoothly start, realize smooth oil pumping without the need of forward and reverse rotation of a motor and reach the stroke more than 6 m.
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Description

Technical field

[0001] The invention relates to the technical field of oil extraction machinery, in particular to a pulley block extended range pumping unit. Background technique

[0002] In the prior art, oil extraction mainly uses beam pumping units to extract oil from oil wells. At present, the conventional beam pumping unit is generally composed of rope suspension, donkey head, walking beam, frame, connecting rod, reducer, crank, balance device, base, frame and motor. Due to the overall weight of the pumping unit, the beam pumping unit has disadvantages such as difficulty in starting, large power consumption, high manufacturing cost, easy damage and high maintenance cost.

[0003] In order to solve the above problems, the following technologies have been proposed in the prior art:

[0004] For example, Chinese Patent No. "89201812.7" discloses a wide-band long-stroke pumping unit. Its publication date is August 23, 1989. Its technical solution is that the pumping unit consists ...

Claims

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