CN214145457U - Suspended weight and pneumatic composite balance stroke-increasing type oil pumping unit driven by linear motor - Google Patents

Suspended weight and pneumatic composite balance stroke-increasing type oil pumping unit driven by linear motor Download PDF

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Publication number
CN214145457U
CN214145457U CN202022256925.6U CN202022256925U CN214145457U CN 214145457 U CN214145457 U CN 214145457U CN 202022256925 U CN202022256925 U CN 202022256925U CN 214145457 U CN214145457 U CN 214145457U
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CN
China
Prior art keywords
side head
head sheave
balance
linear motor
belt
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Expired - Fee Related
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CN202022256925.6U
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Chinese (zh)
Inventor
姚春东
杨钰
王哲
时亚楠
张佳妮
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Yanshan University
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Yanshan University
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Priority to CN202022256925.6U priority Critical patent/CN214145457U/en
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Abstract

The utility model provides a linear electric motor driven hanging oneself with balanced range of increasing formula beam-pumping unit of pneumatic complex, the on-line screen storage device comprises a base, a machine support, bottom switching-over pulley, the polished rod eye, the linear electric motor stator, the continuous belt of polished rod eye and frame, the linear electric motor active cell, increase the journey movable pulley, hanging point side head sheave, counter weight side head sheave, the continuous belt of linear electric motor active cell and counter weight side head sheave, the equalizing cylinder, the belt links to each other of equalizing cylinder and counter weight side head sheave, adjustable counter weight and the continuous belt of counter weight side head sheave, adjustable counter weight, the gas holder, the pipeline, the air-vent valve, the switch board, air compressor. The belt is connected with a suspension point, a rack, a linear motor rotor, a movable pulley, an adjustable balance weight and a balance cylinder, a plurality of belts are wound on a balance weight side head sheave, and balance is realized through torque transmission. The balance cylinder, the air storage tank and the air compressor form a pneumatic balance system. The long stroke oil well has the advantages of energy saving, high efficiency, small mechanism size, and no-stop balance regulation with oil well parameter change.

Description

Suspended weight and pneumatic composite balance stroke-increasing type oil pumping unit driven by linear motor
Technical Field
The utility model relates to a petroleum equipment technical field, concretely relates to linear electric motor driven suspended load and compound balanced stroke increasing formula beam-pumping unit of pneumatics.
Background
At present, most of oil field exploitation enters the middle and later stages, stratum energy is not enough to realize self-injection oil extraction, and mechanical oil extraction becomes a main oil well production mode. The conventional beam pumping unit is mostly adopted when oil extraction is carried out in the current oil field, the beam pumping unit converts the rotary motion of a motor into linear reciprocating motion through a speed reducer and a four-bar mechanism, and the underground reciprocating pump is driven by a polished rod to lift oil to the ground. The pumping unit has low transmission efficiency, poor balance effect, large suspension point acceleration, high noise, high energy consumption and low efficiency, causes a large amount of energy waste, and is not beneficial to environmental protection and saving.
With the progress of electronic power technology, permanent magnet material technology and control technology, the linear motor technology has great progress, and has the advantages of simple structure, low noise, high system efficiency, good control performance and the like. Linear electric motor replaces rotary driving motor in each field gradually, adopts linear electric motor can make the structure simplify greatly, and the maintenance of equipment is changed more conveniently, can effectively improve system's efficiency.
At present, the pumping unit is developed towards increasing stroke and reducing stroke frequency, and tends to be intelligent. The balance mode of the existing pumping unit generally adopts counterweight balance, and the reason that pneumatic balance is not popularized on a large scale is as follows: due to the fact that the load provided by air balance is large, the failure rate of the system is high during operation. However, as the pumping unit operates, the oil well conditions change continuously, the optimal balance parameters of the pumping unit also change continuously, overbalance and underbalance phenomena are easy to occur, and the counterweight adjustment needs to be stopped and manually operated, so that time and labor are wasted.
In order to solve the problems, a new technical scheme is provided.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the above-mentioned prior art problem not enough, provide a linear electric motor driven suspended load and the balanced formula beam-pumping unit that increases of pneumatic complex, its energy-efficient, convenient intelligence easily uses on a large scale.
The utility model adopts the technical proposal that: the utility model provides a linear electric motor driven hanging oneself with balanced stroke form pumping unit of pneumatics, which comprises a base, a machine support, bottom switching-over pulley, the polished rod eye, the linear electric motor stator, the belt that polished rod eye and frame link to each other, linear electric motor active cell, increase journey movable pulley, suspension point side head sheave, counter weight side head sheave, linear electric motor active cell and the continuous belt of counter weight side head sheave, balance cylinder and the continuous belt of counter weight side head sheave, adjustable counter weight, gas holder, pipeline, air-vent valve, a control cabinet, air compressor. The frame, the bottom reversing pulley, the linear motor stator, the balance cylinder, the air storage tank and the air compressor are fixedly installed on the base.
The linear motor stator, the suspension point side head sheave, the counterweight side head sheave and the counterweight side head sheave are fixedly arranged on the frame, and the adjustable counterweight moves up and down on the frame through the pulley.
The linear motor rotor is fixedly connected with the range-extending movable pulley, and the linear motor rotor and the linear motor stator form a linear motor part.
The air compressor is connected with the air storage tank through a pipeline, air entering is controlled by the pressure regulating valve between the air compressor and the air storage tank, and the air storage tank is connected with the balance cylinder through a pipeline to form a pneumatic balance system.
One end of a belt connected with the rope hanger and the rack is fixed on the rack, and the other end of the belt bypasses the range-increasing movable pulley and then bypasses a suspension point side head sheave to be connected with the rope hanger; one end of a belt connecting the linear motor rotor and the counterweight-side head sheave is connected with the linear motor rotor, and the other end of the belt is wound on the counterweight-side head sheave; one end of a belt connected with the balance cylinder and the balance weight side head sheave is connected with the balance cylinder, and the other end of the belt is wound on the balance weight side head sheave; one end of a belt connected with the adjustable balance weight and the balance weight side head sheave is connected with the adjustable balance weight, and the other end of the belt is wound on the balance weight side head sheave; the balance weight side head sheave transmits torque to realize balance.
The utility model has the advantages that: the movable pulley range-increasing mechanism enables the whole machine to be smaller in structural size and lower in manufacturing cost, the linear motor is used for driving the suspension point to reciprocate up and down, a complex mechanical transmission mechanism is omitted, the whole machine efficiency is improved, and energy is saved. The balance system combining the suspended weight balance and the pneumatic balance reduces the pressure in the cylinder, so that the service life of the pneumatic balance system is longer, the control system can adjust the pressure of the cylinder according to the operation parameters of the oil well, the non-stop automatic balance adjustment within a certain range is realized, and the manual stop operation is reduced.
Drawings
Fig. 1 is a schematic view of the structure of the present invention;
fig. 2 is a left side view structure diagram of the present invention.
In the figure: 1. a base; 2. a frame; 3. a bottom reversing pulley; 4. a rope hanger; 5. a linear motor stator; 6. the rope hanger is connected with the belt of the frame; 7. a linear motor mover; 8. a stroke-increasing movable pulley; 9. a suspension point side head sheave; 10. a counterweight side head sheave; 11. the linear motor rotor is connected with the counterweight side head sheave through a belt; 12. a balance cylinder; 13. the balance cylinder is connected with the balance weight side head sheave through a belt; 14. the adjustable balance weight is connected with a balance weight side head sheave through a belt; 15. adjustable counterweight; 16. a gas storage tank; 17. a pipeline; 18. a pressure regulating valve; 19. a control cabinet; 20. an air compressor.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings:
as shown in the figure, the linear motor driven suspended weight and pneumatic compound balanced stroke-increasing type pumping unit comprises a base 1, a rack 2, a bottom reversing pulley 3, a rope hanger 4, a linear motor stator 5, a belt 6 connected with the rope hanger and the rack, a linear motor rotor 7, a stroke-increasing pulley 8, a suspended point side head sheave 9, a counterweight side head sheave 10, a belt 11 connected with the linear motor rotor and the counterweight side head sheave, a balance cylinder 12, a belt 13 connected with the balance cylinder and the counterweight side head sheave, a belt 14 connected with the adjustable counterweight and the counterweight side head sheave, an adjustable counterweight 15, an air storage tank 16, a pipeline 17, a pressure regulating valve 18, a control cabinet 19 and an air compressor 20.
The frame 2, the bottom reversing pulley 3, the linear motor stator 5, the balance cylinder 12, the air storage tank 16 and the air compressor 20 are fixedly arranged on the base 1.
The linear motor stator 5, the suspension point side head sheave 9, the counterweight side head sheave 10 are fixedly arranged on the frame 2, and the adjustable counterweight 15 moves up and down on the frame 2 through a pulley.
The linear motor rotor 7 is fixedly connected with the range-extending movable pulley 8, and the linear motor rotor 7 and the linear motor stator 5 form a linear motor part.
The air compressor 20 is connected with the air storage tank 16 through a pipeline 17, the air inlet between the air compressor and the air storage tank 16 is controlled by a pressure regulating valve 18, and the air storage tank 16 is connected with the balance cylinder 12 through the pipeline 17.
One end of a rope hanger and frame connecting belt 6 is fixed on the frame 2, and the other end of the rope hanger and frame connecting belt passes around the range-extending movable pulley 8 and then passes around the suspension point side head pulley 9 to be connected with the rope hanger 4; one end of a belt 11 for connecting the linear motor rotor and the balance weight side head sheave is connected with the linear motor rotor 7, and the other end of the belt is wound on the balance weight side head sheave 10; one end of a balance cylinder and balance weight side head sheave connecting belt 13 is connected with a balance cylinder 12, and the other end is wound on a balance weight side head sheave 10; one end of an adjustable counterweight and counterweight side head sheave connecting belt 14 is connected with an adjustable counterweight 15, and the other end is wound on the counterweight side head sheave 10; the balance weight side head sheave 10 transmits torque to achieve balance.
The working principle is as follows: the linear motor rotor 7 reciprocates on the linear motor stator 5, the stroke-increasing movable pulley 8 reciprocates along with the linear motor rotor 7, one end of a belt 6 for connecting the rope hanger and the rack is fixed on the rack 2, the other end of the belt bypasses the stroke-increasing movable pulley 8, and then bypasses a suspension point side head sheave 9 to be connected with the rope hanger 4 to drive the polished rod to reciprocate, and the displacement of the suspension point is twice of that of the linear motor rotor due to the existence of the stroke-increasing movable pulley 8. Linear motor active cell 7 is connected to 11 one ends of belt that the wheel links to each other of counter weight side head sheave and counter weight side head sheave, the other end winding is on counter weight side head sheave 10, adjustable counter weight 15 is connected to adjustable counter weight and the 14 one ends of the continuous belt of counter weight side head sheave, the other end winding is on counter weight side head sheave 10, balance cylinder 12 is connected to balance cylinder and the continuous belt 13 one end of counter weight side head sheave, the other end winding is on counter weight side head sheave 10, counter weight side head sheave 10 receives linear motor active cell 7, adjustable counter weight 15, the pulling force of balance cylinder 12, the friction power transmission moment of torsion through the belt realizes the balance.
The balance cylinder 12 is communicated with the gas storage tank 16, when the balance cylinder 12 reciprocates, the total volume of gas is the sum of the volumes of the gas in the balance cylinder 12 and the gas storage tank 16, and the existence of the gas storage tank 16 reduces the pressure fluctuation degree of the gas and improves the stability. When the balance needs to be adjusted, the control cabinet controls the air compressor 20 to output air with proper pressure and flow rate, so as to achieve the purpose of adjusting the balance.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. The above embodiment is merely a preferred embodiment of the present invention, and various modifications and changes can be made without departing from the spirit and scope of the present invention, and these modifications and changes are also within the scope of the present invention.

Claims (3)

1. A linear motor driven type suspended weight and pneumatic compound balance stroke-increasing type oil pumping unit is characterized by comprising a base (1), a rack (2), a bottom reversing pulley (3), a rope hanger (4), a linear motor stator (5), a belt (6) connected with the rope hanger and the rack, a linear motor rotor (7), a stroke-increasing movable pulley (8), a suspension point side head sheave (9), a counterweight side head sheave (10), a belt (11) connected with the linear motor rotor and the counterweight side head sheave, a balance cylinder (12), a belt (13) connected with the balance cylinder and the counterweight side head sheave, a belt (14) connected with the adjustable counterweight and the counterweight side head sheave, an adjustable counterweight (15), an air storage tank (16), a pipeline (17), a pressure regulating valve (18), a control cabinet (19) and an air compressor (20); the frame (2), the bottom reversing pulley (3), the linear motor stator (5), the balance cylinder (12), the air storage tank (16) and the air compressor (20) are fixedly arranged on the base (1); the linear motor stator (5), the suspension point side head sheave (9) and the counterweight side head sheave (10) are fixedly arranged on the frame (2); one end of a rope hanger and a rack connecting belt (6) is fixed on the rack (2), and the other end of the rope hanger bypasses the range-increasing movable pulley (8) and then bypasses a suspension point side head sheave (9) to be connected with the rope hanger (4); one end of a belt (11) connecting the linear motor rotor and the balance weight side head sheave is connected with the linear motor rotor (7), and the other end of the belt is wound on the balance weight side head sheave (10); one end of a belt (13) connecting the balance cylinder and the balance weight side head sheave is connected with the balance cylinder (12), and the other end of the belt is wound on the balance weight side head sheave (10); one end of a belt (14) connecting the adjustable counterweight and the counterweight side head sheave is connected with the adjustable counterweight (15), and the other end of the belt is wound on the counterweight side head sheave (10); the linear motor rotor (7) is fixedly connected with the stroke-increasing movable pulley (8), and the linear motor rotor (7) and the linear motor stator (5) form a linear motor part; the air compressor (20) is connected with the air storage tank (16) through a pipeline (17), the air storage tank and the air storage tank are controlled by a pressure regulating valve (18) to enter, and the air storage tank (16) is connected with the balance cylinder (12) through the pipeline (17).
2. The linear motor driven compound balance extended range pumping unit of claim 1 wherein the adjustable counterweight (15) moves up and down on the frame (2) through a pulley.
3. The linear motor driven compound balance extended range pumping unit of the suspended weight and pneumatic power of claim 1, wherein the balance weight side head sheave (10) transmits torque to realize balance.
CN202022256925.6U 2020-10-12 2020-10-12 Suspended weight and pneumatic composite balance stroke-increasing type oil pumping unit driven by linear motor Expired - Fee Related CN214145457U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202022256925.6U CN214145457U (en) 2020-10-12 2020-10-12 Suspended weight and pneumatic composite balance stroke-increasing type oil pumping unit driven by linear motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202022256925.6U CN214145457U (en) 2020-10-12 2020-10-12 Suspended weight and pneumatic composite balance stroke-increasing type oil pumping unit driven by linear motor

Publications (1)

Publication Number Publication Date
CN214145457U true CN214145457U (en) 2021-09-07

Family

ID=77558729

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202022256925.6U Expired - Fee Related CN214145457U (en) 2020-10-12 2020-10-12 Suspended weight and pneumatic composite balance stroke-increasing type oil pumping unit driven by linear motor

Country Status (1)

Country Link
CN (1) CN214145457U (en)

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20210907

CF01 Termination of patent right due to non-payment of annual fee