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Equalizing device for well pumping unit

A technology of balancing device and pumping unit, applied in mechanical equipment, machine/engine, liquid variable capacity machinery, etc., can solve the problems affecting the running stability of the whole machine, the balance structure is single, and the height of the whole machine is increased, so as to achieve balance Reasonable structure, increase stability and reduce the height of the whole machine

Inactive Publication Date: 2005-07-06
DAGANG OIL FIELD GRP +1
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AI Technical Summary

Problems solved by technology

This technology has the following disadvantages: because the balance weight is connected to the lower end of the linear motor mover, the height of the whole machine is increased, which affects the stability of the whole machine; at the same time, due to the single balance structure, the energy consumption is large

Method used

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  • Equalizing device for well pumping unit
  • Equalizing device for well pumping unit
  • Equalizing device for well pumping unit

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Embodiment Construction

[0010] With reference to accompanying drawing, the balancing device of pumping unit of the present invention comprises linear motor 4, balancing device 12, frame 6, sky wheel 8, and sky wheel 8 is fixedly installed on the top of frame 6, and linear motor 4 longitudinally along frame 6 Installation, the motor stator 5 is fixed with the frame 6, the motor mover 3 reciprocates up and down along the motor stator 5, the flexible connector is connected with the motor mover 3 through the sky wheel 8, and the other end is connected with the rope hanger 10. The balancing device 12 includes a dynamic balance 1 and a static balance 2.

[0011] The dynamic balance 1 is a flexible piece, one end is connected with the frame 6 and the other end is connected with the motor mover 3 . The dynamic balance 1 can be a counterweight chain or other similar structures formed by sequentially connecting small counterweights. The weight of dynamic balance 1 is determined according to the needs of oil w...

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Abstract

A balancing device for an oil pumping unit, in particular to a balancing device for an oil pumping unit driven by a linear motor. In order to overcome the problem that the balance weight of the existing pumping unit is connected to the lower end of the linear motor mover, the height of the whole machine is increased, and at the same time, due to the single balance structure, the deficiency of precise balance cannot be realized, the balance device (12) of the present invention includes a dynamic balance ( 1) and static balance (2); dynamic balance (1) is a flexible piece, one end is connected to the frame (6), and the other end is connected to the motor mover (3); the static balance (2) is connected to the motor mover (3) Fixedly connected, the lower end of the static balance (2) is not lower than the bottom of the motor mover (3). The balance method combining dynamic balance and static balance is adopted, the balance structure is more reasonable, which is conducive to the realization of precise balance, at the same time, the height of the whole machine is reduced, and the stability of the whole machine operation is increased.

Description

technical field [0001] The invention relates to a pumping unit driven by a linear motor for petroleum exploitation, in particular to a balance device of the pumping unit. Background technique [0002] The pumping unit is one of the most widely used oil pumping equipment in oil extraction. At present, most of the traditional pumping units are beam-type four-bar linkages. In recent years, beam-free pumping units have been successfully developed and applied to production. The CN2284867Y Chinese invention announced on June 24, 1998 Patent "Pumping unit driven by controllable linear motor", CN2467821Y Chinese invention patent "Controllable linear motor driven pumping unit" announced on December 26, 2001, and CN2412105Y Chinese invention patent published on December 27, 2000 "Beamless pumping units driven by linear motors" all belong to beamless pumping units. [0003] "Linear Motor Driven Beamless Pumping Unit" is composed of steel wire rope, pulley block, bracket, linear motor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B47/02
Inventor 刘延平李洪山柴希军杨继军
Owner DAGANG OIL FIELD GRP
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