WO2009009983A1

WO2009009983A1 - A balance type oil beam-pumping unit

Info

Publication number: WO2009009983A1
Application number: PCT/CN2008/071418
Authority: WO
Inventors: Chengqun Jin
Original assignee: Chengqun Jin
Priority date: 2007-07-13
Filing date: 2008-06-24
Publication date: 2009-01-22
Also published as: CN201159158Y; CN101298833A

Abstract

A balance type beam-pumping unit, comprising a walking beam(16), a support bracket(18), a rope suspender(28), a power machine(20), driving ropes(14), a driving wheel(5), a balance weight (3), a pumping rod (29). The walking beam(16) is mounted on the support bracket(18) through a support shaft(17), the support bracket(18) is mounted on the bracket(2), and the driving wheel(5) is fixed on a driving wheel bracket(4) of the bracket(2). The pumping rod (29) and the balance weight (3) are separately located at the sides of the beam's gyration central. The pumping rod (29) is connected with the walking beam(16) through the rope suspender(28), the balance weight (3) is connected with the walking beam(16), and the power machine(20) is connected with the driving wheel(5). One end of the driving rope(14) is connected with the rope suspender(28) which on one side of the beam's gyration central, or is directly fixed on the walking beam(16). The other end of the driving rope(14) passes through the driving wheel(5) and is connected with the rope suspender(28) which on the other side of the beam's turning central, or is directly fixed on the driving wheel(5) and then is connected with the rope suspender(28) which on the other side of the beam's gyration central, or the other end of the driving rope(14) is directly fixed on the driving wheel(5).

Description

Balance beam pumping unit

The present application claims priority to Chinese Patent Application No. 20072015526, filed on Jan. 13, 2007, the entire disclosure of which is incorporated herein by reference.

Technical field

The invention relates to an oil recovery device, in particular to a balance beam pumping unit.

Background technique

At present, the commonly used beam pumping unit such as the CYJ pumping unit in the oil field relies on a four-bar linkage mechanism, which has low commutation efficiency, large commutation impact and difficult stroke adjustment, and the beam pumping unit adopts a crank. The centrifugal force balance method has a low balance accuracy and is difficult to adjust the balance.

Summary of the invention

The technical problem to be solved by the present invention is to provide a four-link reversing mechanism for replacing the general beam pumping unit in the manner of positive and negative commutation of the electric motor under the control of the electric control device, and in the beam The symmetrical balance method replaces the balance-type beam pumping unit with the crank-rotation centrifugal force balance method. The pumping unit has high balance precision, high commutation efficiency, small commutation impact, and is particularly easy to adjust stroke and stroke.

In order to solve the above technical problems, the present invention provides a balance beam pumping unit, comprising a beam, a support frame, a lanyard mechanism, a power unit, a drive line, a drive wheel, a counterweight, and a sucker rod, wherein: The beam is mounted on the support frame through the support shaft, the support frame is mounted on the frame, the drive wheel is arranged on the drive frame on the frame, and the sucker rod and the counterweight are respectively located on both sides of the swing center of the beam, pumping oil The rod is connected to the beam by a lanyard mechanism, the weight is connected to the beam, the power device is connected with the driving wheel, one end of the driving rope or a lanyard mechanism connecting the side of the swing center of the beam, or directly fixed on the beam, The other end of the drive rope or the drive wheel is connected to the lanyard mechanism on the other side of the swing center of the beam or directly to the drive wheel.

The counterweight is suspended on the beam by a lanyard or directly attached to the beam.

In one embodiment, the power unit includes an electric motor, a first pulley, a second pulley, a belt and a gearbox, the first pulley is mounted on the output shaft of the electric motor, and the second pulley is mounted on the input shaft of the transmission, the belt connection is A pulley and a second pulley.

In a preferred embodiment, the power unit includes an electric motor, a first pulley, a second pulley, and a belt, the first pulley being mounted on the output shaft of the electric motor, and the second pulley being mounted on the shaft of the driving wheel Upper, the belt connects the first pulley and the second pulley, and the motor is a low-speed, high-torque permanent magnet synchronous motor.

In another embodiment, the lanyard mechanism includes a hoe, a sling rope, and a slinger mounted on the beam, the hoe is coupled to the sling rope, and the sling is attached to the sling rope.

The preferred balance beam pumping unit further comprises an angle increasing wheel for adjusting the angle of the driving rope around the driving wheel and a guiding wheel for adjusting the direction of movement of the driving rope. The angle increasing wheel is mounted on the frame, and the guiding wheel is mounted on the machine. On the guide wheel frame of the frame, the driving rope bypasses the angle increasing wheel and the guiding wheel, and the two ends of the driving rope are respectively connected to the lanyard mechanisms on both sides of the swing center of the beam, and in the preferred solution, the method further comprises A tensioning wheel that drives the tension of the rope, and the tensioning wheel is pressed against the drive rope.

In a further preferred embodiment, an electronic control device, a positioning device and an encoder are further provided, so that the power device rotates regularly in the forward and reverse directions, and at the same time adjusts the commutation interval, the positioning device is mounted on the frame, and the encoder Installed on the output shaft of the motor, the electronic control unit is connected to the power unit, the positioning device and the encoder. A hoist is mounted on the side of the frame opposite to the drive wheel, and a pulley is mounted on the lower end of the hoe. The wire rope of the hoist is hanged over the pulley and hung on the lanyard hook of the frame to lift the weight or hang the sucker rod.

The balance type beam pumping unit provided by the invention can greatly save electric energy, saves 40% - 70% of electricity compared with the general beam pumping unit, and replaces the crank slewing centrifugal force balance mode on the beam symmetrical balance mode, balance precision Up to 96% or more, so that the mechanical impact of the drive device during forward and reverse switching is small.

The pumping unit with the positioning device also enables precise and easy adjustment of the stroke.

The use of the pumping unit having the toothless transmission power unit of the present invention further reduces the energy consumption, and can greatly reduce the operating noise and has no oil leakage.

DRAWINGS

1 is a schematic structural view of a first embodiment of a balance beam pumping unit of the present invention;

Figure 2 is a plan view of Figure 1;

Figure 3 is a schematic structural view of a second embodiment of the balance beam pumping unit of the present invention;

Figure 4 is a plan view of Figure 3;

Figure 5 is a schematic structural view of a third embodiment of the balance beam pumping unit of the present invention;

Figure 6 is a plan view of Figure 5;

Figure 7 is a schematic structural view of a fourth embodiment of the balance beam pumping unit of the present invention; Figure 8 is a plan view of Figure 7.

detailed description

Example 1

Referring to Figures 1 and 2, an embodiment of the present invention includes an electronic control device 1, a frame 2, a counterweight 3, a drive wheel frame 4, a drive wheel 5, a gearbox 6, a displacement positioner 7, and a counterweight tow rope. 8. Angle-increasing wheel 9, counterweight boring head 10, second driving boring head 11, second pulley 12, belt 13, drive rope 14, first pulley 15, beam 16, support shaft 17, support frame 18, brake 19. The electric motor 20, the first driving boring head 21, the sucker rod boring head 22, the tensioning pulley 23, the pulley 24, the guide wheel 25, the sucker rod boring rope 26, the guide wheel frame 27, the suspension rope 28, The sucker rod 29, the hoisting machine 30, the lanyard hook 31, and the encoder 32.

The transmission mechanism is composed of the first pulley 15, the second pulley 12, the belt 13, and the gearbox 6, and the transmission mechanism and the electric motor 20 or other power machine constitute a power unit. A first pulley 15 is mounted on the output shaft of the motor 20, and the torque is transmitted to the second pulley 12 through the belt 13, and the second pulley 12 is connected to the transmission 6. The gearbox 6 is a gearbox having a plurality of sets of meshing arms. The output shaft of the gearbox 6 is connected to the drive wheel 5.

The beam 16 is mounted on the support frame 18 via a support shaft 17, and the support frame 18 is mounted on the frame 2 of the pumping unit. The sucker rod 29 and the counterweight 3 are respectively located on both sides of the center of rotation of the beam 9, the sucker rod 29 is connected to the beam 16 by the suspension rope 28, the sucker rod boring rope 26, the sucker rod hoe 22, and the counterweight 3 is connected to the beam 16 by the counterweight raking rope 8, the counterweight hoe 10 The weight of the counterweight 3 substantially balances the weight of the sucker rod 29 - the side load. The motor 20 drives the drive rope 14 through the transmission mechanism so that only a small amount of electrical energy is required to rotate the beam 16 about the support shaft 17. The two drive rams 11 and 21, the drive wheel 5 and the guide wheel 25 are distributed symmetrically with respect to a plane passing through the axis of the support shaft 17 and perpendicular to the frame 2. The electronic control device adopts the form of electronic control rejection. Usually, an inverter, a programmable controller (PLC), a brake unit, and a display unit are provided in the electronic control rejection 1. The output end of the frequency converter is connected to the motor 20, and under the control of the PLC, the motor 20 is regularly rotated forward and reversed to realize the rotation of the beam 16 about the support shaft 17 and the upward and downward reciprocation of the sucker rod 29. The positioning device adopts a displacement position measuring device 7, and the displacement position measuring device 7 is mounted on the frame and connected with the electric control rejection 1 for correcting the single running distance. The encoder 32 is mounted on the output shaft of the motor 20 and connected to the electronically controlled reject 1 to feed back the pumping unit operation to the frequency converter and the programmable controller, so that the pumping unit realizes closed loop control. The drive rope 14 is wound around the drive wheel 5, the angle increaser 9, the tensioner 23 and the guide wheel 25, respectively, to the drive rams 11, 21 mounted on both sides of the center of rotation of the beam. The driving wheel 5, the angle increasing wheel 9, the tensioning wheel 23 and the guide wheel 25 are mounted on the frame 2 of the pumping unit, the angle increasing wheel 9 abuts against the driving rope 14, and the tensioning wheel 23 is pressed against the driving rope 14. Together, the drive rope 14 is tensioned so that the transmission mechanism is efficiently driven.

When the pumping unit is installed or repaired, the wire rope discharged from the hoisting machine 30 passes through the pulley 24 and is hung on the lanyard hook 31 on the frame 2 to lift the weight 3 or the sucker rod 29 with the hoist 30. Example 2

Referring to FIG. 3 and FIG. 4, the embodiment of the present invention includes an electronic control device 1, a frame 2, a counterweight 3, a drive wheel frame 4, a drive wheel 5, a displacement positioner 7, an angle increase wheel 9, and a second drive head. 11. Second pulley 12, belt 13, drive rope 14, first pulley 15, beam 16, support shaft 17, support frame 18, brake 19, motor 20, first drive ram 21, tensioner 23, pulley 24. Guide wheel 25, sucker rod raking rope 26, guide wheel frame 27, suspension rope 28, sucker rod 29, hoist 30, lanyard hook 31, encoder 32.

Similar to the embodiment shown in Embodiment 1, the difference is that the power mechanism is driven by a belt, and the first driving boring head 21 and the sucker rod boring head 22, the second driving boring head 11, and the weight 驴 in the embodiment 1 are The heads 10 are each combined into one, and the counterweight 3 is directly fixed to the second drive ram 11. Further, in the power mechanism of the present embodiment, there is no gear transmission, but only a belt transmission, so that the motor 20 requires a large torque, low speed ₇ j synchronous motor.

The first pulley 15, the second pulley 12, and the belt 13 constitute a transmission mechanism, and the transmission mechanism and the motor 20 or other power unit constitute a power unit. A first pulley 15 is mounted on the output shaft of the motor 20, and torque is transmitted to the second pulley 12 via the belt 13, and the second pulley 12 is mounted on the shaft of the drive wheel 5.

The beam 16 is mounted on the support frame 18 via a support shaft 17, and the support frame 18 is mounted on the frame 2 of the pumping unit. The sucker rod 29 and the counterweight 3 are respectively located on both sides of the center of rotation of the beam 16, the sucker rod 29 is connected to the beam 16 by the suspension rope 28, the sucker rod boring rope 26, the first driving boring head 21, and the counterweight 3 is connected to the beam 16 through the second driving boring head 11, the weight of the counterweight 3 is basically The weight of the load on one side of the sucker rod 29 is balanced. The motor 20 drives the drive rope 14 through the transmission mechanism, so it only needs to be very Small electrical energy can cause the beam 16 to rotate about the support shaft 17. The two drive rams 11 and 21, the drive wheel 5 and the guide wheel 25 are distributed symmetrically with respect to a plane passing through the axis of the support shaft 17 and perpendicular to the frame 2.

The electric control device adopts the form of electronic control rejection. Usually, the electric control device is equipped with an inverter, a programmable controller (PLC), a brake unit, a display unit and the like. The output end of the frequency converter is connected to the motor 20, and under the control of the PLC, the motor 20 is regularly rotated forward and reversed to realize the rotation of the beam 16 around the support shaft 17 and the up and down reciprocation of the sucker rod 29. The positioning device adopts a displacement position measuring device. The displacement position measuring device is mounted on the frame and connected with the electronic control rejection 1 to correct the single running distance. The encoder 32 is mounted on the output shaft of the motor 20 and connected to the electronically controlled reject 1, which feeds back the operation of the pumping unit to the frequency converter and the programmable controller, so that the pumping unit realizes closed-loop control.

The drive rope 14 is wound around the drive wheel 5, the angle increase pulley 9, the tension pulley 23 and the guide wheel 25, respectively, to the drive rams 11, 21 mounted on both sides of the center of rotation of the beam. The driving wheel 5, the angle increasing wheel 9, the tensioning wheel 23 and the guide wheel 25 are mounted on the frame 2 of the pumping unit, the angle increasing wheel 9 abuts against the driving rope 14, and the tensioning wheel 23 is pressed against the driving rope 14. Together, the drive rope 14 is tensioned so that the transmission mechanism is efficiently driven.

When the pumping unit is installed or repaired, the wire rope discharged from the hoist 30 passes through the pulley 24 and is hung to the frame.

On the lanyard hook 31 on the 2, in order to lift the counterweight 3 with the hoist 30 or hang the sucker rod 29.

The energy saving efficiency of the embodiment is high, about 40%~70% energy saving, and there is no oil leakage at the same time, and the running noise is also low, about 50 db or less, so it is very beneficial to protect the environment. Example 3

Referring to FIG. 5 and FIG. 6, the embodiment of the present invention includes an electric control device 1, a frame 2, a counterweight 3, a drive wheel frame 4, a drive wheel 5, a displacement positioner 7, a second pulley 12, a belt 13, and a drive rope. 14. The first pulley 15, the beam 16, the support shaft 17, the support frame 18, the brake 19, the motor 20, the sucker rod hoe 22, the pulley 24, the sucker rod raking rope 26, the suspension rope 28, the pumping The oil rod 29, the hoisting machine 30, the lanyard hook 31, and the encoder 32.

The difference from the embodiment shown in Embodiment 1 is that the power mechanism is driven by a belt, and the first driving boring head 21 and the sucker rod boring head 22 in Embodiment 1 are combined into one, and the weight 3 is directly fixed on the beam. On the 16th, one end of the driving rope 14 is connected to the beam 16 and the other end is fixedly connected with the wheel circumference of the driving wheel 5. The pumping unit of this embodiment does not have the angle increasing wheel, the tensioning wheel and the guiding wheel, and therefore, the structure Simpler, install Convenience. Further, in the power mechanism of the present embodiment, there is no gear transmission, but only belt transmission, so that the motor 20 requires a large torque, low speed permanent magnet synchronous motor.

The beam 16 is mounted on the support frame 18 via a support shaft 17, and the support frame 18 is mounted on the frame 2 of the pumping unit. The sucker rod 29 and the counterweight 3 are respectively located on both sides of the center of rotation of the beam 16, the sucker rod 29 is connected to the beam 16 by the suspension rope 28, the sucker rod raking rope 26, the sucker rod hoe 22, and the counterweight 3 is directly fixed on the beam 16. The weight of the counterweight 3 substantially balances the sucker rod 29—The weight of the side load. One end of the drive rope 14 is connected to the beam 16 and the other end is fixedly connected to the circumference of the drive wheel 5. The motor 20 drives the drive rope 14 through the transmission mechanism, so that only a small amount of electric power is required to rotate the beam 16 about the support shaft 17.

When the pumping unit is installed or repaired, the wire rope discharged from the hoisting machine 30 passes through the pulley 24 and is hung on the lanyard hook 31 on the frame 2 to lift the weight 3 or the sucker rod 29 with the hoist 30.

Example 4

Referring to FIG. 7 and FIG. 8, the embodiment of the present invention includes an electronic control device 1, a frame 2, a counterweight 3, a drive wheel frame 4, a drive wheel 5, a displacement positioner 7, a second drive boring head 11, and a second pulley. 12. Belt 13, drive rope 14, first pulley 15, beam 16, support shaft 17, support frame 18, brake 19, motor 20, first drive ram 21, tensioner 23, pulley 24, guide wheel 25 The sucker rod ram traction rope 26, the guide wheel frame 27, the suspension rope 28, the sucker rod 29, the hoisting machine 30, the lanyard hook 31, and the encoder 32. This embodiment is very similar to the embodiment shown in Embodiment 2, and the difference is that the second driving boring head 11 is connected to one end of the driving rope 14, and the other end of the driving rope 14 is directly fixed to the driving wheel 5 and then with the first The driving boring heads 21 are connected, so that the angle increasing wheel 9 is not required in this embodiment, and the rest is identical to that of the embodiment 2.

Claims

Rights request

1. A balance beam pumping unit, comprising a beam, a support frame, a lanyard mechanism, a power unit, a drive rope, a drive wheel, a counterweight, and a sucker rod, wherein: the beam is mounted on the support shaft On the support frame, the support frame is mounted on the frame, the drive wheel is arranged on the drive frame of the frame, the sucker rod and the counterweight are respectively located on both sides of the swing center of the beam, and the sucker rod is passed through the lanyard mechanism and the tour The beam is connected, the counterweight is connected to the beam, the power device is connected with the driving wheel, one end of the driving rope or the lanyard mechanism connecting the side of the swing center of the beam, or directly fixed on the beam, the other end of the driving rope or around The overdrive wheel is connected to the lanyard mechanism on the other side of the swing center of the beam, or directly fixed to the drive wheel, and then connected to the lanyard mechanism on the other side of the swing center of the beam, and the other end of the drive rope is directly fixed. On the drive wheel.

2. The balance beam pumping unit according to claim 1, wherein: said power unit comprises an electric motor, a first pulley, a second pulley, a belt and a gearbox, and the first pulley is mounted on an output shaft of the motor Upper, the second pulley is mounted on the input shaft of the transmission, and the belt connects the first pulley and the second pulley.

3. The balance beam pumping unit according to claim 1, wherein: said power unit comprises an electric motor, a first pulley, a second pulley and a belt, and the first pulley is mounted on an output shaft of the motor, The two pulleys are mounted on the shaft of the drive wheel, and the belt connects the first pulley and the second pulley. The motor is a low speed, high torque permanent magnet synchronous motor.

4. A balance beam pumping unit according to any one of claims 1 to 3, wherein: said lanyard mechanism comprises a hoe, a hoe rope and a suspension rope mounted on the beam The hoe is connected with the raft rope, and the hoist is connected to the raft rope. The weight is suspended on the beam by the lanyard mechanism or directly fixed on the beam.

5. The balance beam pumping unit according to claim 4, further comprising: an angle increasing wheel for adjusting a wrap angle of the driving rope around the driving wheel; and a guiding wheel for adjusting a moving direction of the driving rope. The angle increasing wheel is mounted on the frame, the guiding wheel is mounted on the guiding wheel frame on the frame, the driving rope bypasses the angle increasing wheel and the guiding wheel, and the two ends of the driving rope are respectively connected with the lanyards on both sides of the swing center of the beam mechanism.

6. The balance beam pumping unit of claim 5, further comprising: a tensioning wheel for adjusting the tension of the drive rope, the tensioning wheel being pressed against the drive line.

7. The balance beam pumping unit according to claim 6, further comprising: an electric control device, a positioning device and an encoder for rotating the power device in a regular forward and reverse direction, and Adjustment The commutation is intermittent, the positioning device is mounted on the frame, the encoder is mounted on the output shaft of the motor, and the electronic control device is connected to the power device, the positioning device and the encoder.

8. The balance beam pumping unit according to claim 4, further comprising: an electric control device, a positioning device and an encoder for rotating the power device in a regular forward and reverse direction, and Adjusting the commutation interval, the positioning device is mounted on the frame, the encoder is mounted on the output shaft of the motor, and the electronic control device is connected to the power device, the positioning device and the encoder.

The balance beam pumping unit according to claim 7 or 8, wherein: the hoist is mounted on the frame, and the lower end of the hoe is equipped with a pulley, and the wire rope of the hoist is connected to the A lanyard hook on the rack for lifting the weight or hanging the sucker rod.

The balance beam pumping unit according to claim 1, wherein the drive rope is a steel wire rope, a nylon rope, a nylon belt, a rubber belt, or a chain.