WO2008131610A1 - Unité de pompage de puits sans entraînement par engrenage - Google Patents

Unité de pompage de puits sans entraînement par engrenage Download PDF

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Publication number
WO2008131610A1
WO2008131610A1 PCT/CN2007/002347 CN2007002347W WO2008131610A1 WO 2008131610 A1 WO2008131610 A1 WO 2008131610A1 CN 2007002347 W CN2007002347 W CN 2007002347W WO 2008131610 A1 WO2008131610 A1 WO 2008131610A1
Authority
WO
WIPO (PCT)
Prior art keywords
motor
pumping unit
pulley
rope
drive
Prior art date
Application number
PCT/CN2007/002347
Other languages
English (en)
Chinese (zh)
Inventor
Chengqun Jin
Original Assignee
Wuxi Dpl Petroleum Machine Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN 200710098039 external-priority patent/CN101037936A/zh
Priority claimed from CN 200710097714 external-priority patent/CN101046145A/zh
Application filed by Wuxi Dpl Petroleum Machine Co., Ltd. filed Critical Wuxi Dpl Petroleum Machine Co., Ltd.
Publication of WO2008131610A1 publication Critical patent/WO2008131610A1/fr

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
    • E21B43/121—Lifting well fluids
    • E21B43/126—Adaptations of down-hole pump systems powered by drives outside the borehole, e.g. by a rotary or oscillating drive
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B47/00—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps
    • F04B47/02—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps the driving mechanisms being situated at ground level

Definitions

  • the invention relates to an oil recovery device, in particular to a toothless transmission oil pumping machine. Background technique
  • the pumping unit belongs to the oil-mining machine. At present, the pumping unit is driven by the electric motor, and the sucker rod is driven up and down by the gear reducer to perform the pumping operation.
  • Patent Application No. 200410011020.5 discloses a pumping machine comprising a main frame, an electric control rejection, a counterweight, a suspension rope, a pumping rod, a motor, a small Parts such as gears, large gears, crown wheels and gearboxes.
  • the oil absorbing rod is connected with the suspension rope
  • the motor is connected through the coupling and the reduction gear box
  • the large gear, the sky wheel and the hoisting wheel are fixed to each other, and are mounted on the sun gear shaft through the bearing
  • the sun gear shaft fastener is used for the sun gear shaft Fasten.
  • the motor drives the reduction gear box through the coupling, and the pinion gear and the large gear connected to the output shaft of the reduction gear box mesh, so that the balance wheel fastened together with the large gear gear rotates regularly and in the opposite direction. , driving the sucker rod to reciprocate up and down.
  • the motor transmits torque to the sky wheel through the reduction gear box, and drives the sky wheel to rotate, thereby completing the up and down reciprocating motion of the sucker rod, but if it is to satisfy the work of high torque and low speed, Therefore, the gear structure in the reducer is required to be complicated, for example, a multi-stage gear is required to achieve deceleration and increase torque. Due to the difficulty in manufacturing the transmission gears in the reducer, the complicated reducer is more difficult to manufacture and the manufacturing cost is higher, and the operation of the meshing gear during operation causes a large noise, and oil leakage from the reduction gearbox. It also appears frequently.
  • the weight of the counterweight usually has several tons of weight, it is necessary to use the motor to pull and lift the counterweight during installation and maintenance, so the output power of the motor is required to be large, and the motor usually performs normal pumping operations. Only a relatively small output power is required, thus causing a waste of motor power.
  • the object of the present invention is to provide a pumping unit which has a simple structure, low running noise, no oil leakage problem, low required output power of the motor and low cost.
  • the toothless transmission pumping unit disclosed in the present invention comprises a main frame, a bracket, a motor, a sucker rod, a suspension rope, a counterweight, a drive shaft, a drive rope, a drive wheel, a first pulley, a second pulley and a belt;
  • the bracket is located at the top of the main frame, the bracket has a platform, the motor is mounted on the platform of the bracket, the drive shaft is mounted on the bracket, the driving wheel is mounted on the driving shaft, the sucker rod and the suspension
  • the rope is connected to the counterweight by a drive rope that bypasses the drive wheel, the first pulley is mounted on the output shaft of the motor, and the second pulley is mounted on the drive shaft, the belt is connected to the first pulley and the first pulley
  • G is defined by:
  • G PxD/ ( 2 ⁇ ) , where ⁇ is the traction of the motor output, D is the diameter of the drive wheel, and ⁇ is the ratio of the diameter of the second pulley to the diameter of the first pulley.
  • ⁇ is the traction of the motor output
  • D is the diameter of the drive wheel
  • ⁇ is the ratio of the diameter of the second pulley to the diameter of the first pulley.
  • the motor is a permanent magnet synchronous motor.
  • the rotational speed of the motor is greater than or equal to ⁇ , and ⁇ is defined by:
  • n 2 L S K/ ( ⁇ ⁇ ) , where L is the stroke of the sucker rod, S is the stroke of the sucker rod, K is 0-10, and the diameter D of the drive wheel is 0.3m-1.2m.
  • the gearless transmission pumping unit further comprises a position measuring device, wherein the position measuring device comprises a counting disc and a proximity switch, the counting disc is mounted on an output shaft of the driving shaft or the motor, and receives the signal of the counting disc position.
  • the proximity switch is connected to the control device, and the control device is connected to the motor, outputs a voltage of a set frequency to the motor, and rotates the motor forward and reverse according to a signal generated by the position measuring device.
  • the toothless transmission pumping unit further comprises a position measuring device, wherein the position measuring device is a photoelectric encoder, and the photoelectric encoder is mounted on an output shaft of the driving shaft or the motor, and is connected to the control device.
  • the control device is connected to the motor, outputs a voltage of a set frequency to the motor, and rotates the motor in the forward and reverse directions according to a signal generated by the position measuring device.
  • the toothless transmission pumping unit further comprises a safety rope, one end of which is fastened to the weight and the other end is fastened to the driving wheel.
  • the bottom of the pumping unit frame is provided with an adjusting top wire and a roller.
  • the toothless transmission pumping unit further comprises a guide for maintaining vertical movement of the counterweight a mechanism, and the guiding mechanism is mounted on the counterweight, the counterweight moving along the guiding mechanism.
  • the toothless transmission pumping unit further comprises a hoisting machine, the hoisting machine is arranged on the platform of the bracket, and the hoisting machine is connected with the counterweight through the connecting device.
  • the connecting device comprises a hoisting rope, a fixed pulley, a moving pulley and a hoisting rope holder, wherein the movable pulley is connected with the counterweight, one end of the hoisting rope is connected with the hoist, and the other end of the hoisting rope is connected to the fixed pulley and the movable pulley to On the hoisting rope holder.
  • the toothless drive pumping unit further comprises a guiding device mounted on the platform of the bracket, the drive rope bypassing the guiding device.
  • the invention also provides a toothless transmission pumping unit, comprising a bracket, a motor, a sucker rod, a suspension rope, a counterweight, a drive shaft, a drive rope, a drive wheel, a first sprocket, a second sprocket and a chain
  • the motor is mounted on a bracket, the drive shaft is mounted on the bracket, the drive wheel is mounted on the drive shaft, and the sucker rod and the suspension rope pass the drive rope and the counterweight bypassing the drive wheel
  • a first sprocket is mounted on the output shaft of the motor, and a second sprocket is mounted on the drive shaft, the chain connecting the first sprocket and the second sprocket; the rated output of the motor
  • the torque is greater than or equal to G, and G is defined by:
  • G PxD/ ( 2 ⁇ ), where ⁇ is the traction of the motor output, D is the diameter of the drive wheel, and ⁇ is the ratio of the diameter of the second sprocket to the diameter of the first sprocket.
  • the pumping unit of the present invention adopts the design of the gearless transmission, the processing difficulty and the manufacturing cost are greatly reduced. Due to the belt drive, the transmission noise is significantly reduced, and the working noise is usually less than 55db. The problem of oil leakage was solved because there was no gearbox crusting. Its simple structure also greatly reduces manufacturing costs.
  • toothless transmission pumping unit of the present invention low-speed, high-torque output can be realized with only a low-power motor and a simple structure.
  • the power of the main motor can be significantly reduced as compared with when the counterweight is directly lifted by the main motor.
  • the winch not only can increase the counterweight, but can also be used as a crane during workover operations.
  • FIG. 1 is a schematic structural view of a toothless transmission pumping unit according to a first embodiment of the present invention
  • Figure 2 is a left side view of the toothless transmission pumping unit shown in Figure 1;
  • Figure 3 is a schematic view showing the structure of a toothless transmission pumping unit having a hoist according to a second embodiment of the present invention
  • Figure 4 is a left side view of the toothless transmission pumping unit shown in Figure 3;
  • FIG. 5 is a plan view of the toothless drive pumping unit of Figure 3. detailed description
  • the pumping unit f includes a pumping mechanism, a counterweight 4, a drive shaft 18 mounted on the bracket 17, a drive wheel 19 mounted on the drive shaft 18, and an electric control rejection 1
  • the motor 8, the first pulley 9, the belt 11, and the second pulley 12, the pumping mechanism and the counterweight are connected by a drive rope 16 that bypasses the drive wheel.
  • the pumping mechanism includes a sucker rod 13 and a suspension rope 14.
  • the pumping unit further includes: an electric control circuit 1 connected to the motor 8 and outputting a set frequency and voltage to the motor, and the electronic control rejection 1 is used as a control device for controlling the motor.
  • the output shaft of the motor 8 has a first pulley 9 connected to a second pulley 12 mounted on the drive shaft via a belt 11 to transmit torque of the motor output shaft to the drive shaft 18 .
  • an inverter In the electronic control rejection 1, an inverter, a programmable controller (PLC), a brake unit, a display unit, and the like are provided.
  • a frequency converter is a device that converts alternating current with constant voltage and frequency into alternating voltage of voltage or frequency.
  • a frequency converter for motor control that changes both voltage and frequency.
  • the output of the inverter is connected to the motor 8 to operate the motor 8 at a certain frequency and voltage.
  • PLCs and other industrial computers such as microcontrollers
  • the display unit provides the user with an interface for human-computer interaction.
  • the motor 8 can be used with all motors that can meet the pumping conditions.
  • the traction force P is equal to the difference between the gravity of the balance between the sucker rod 13 and the counterweight 4, and also includes the resistance generated during the pumping operation. Traction P according to well depth and well The situation is different.
  • the traction force P of the motor output is 5880N to 29400N.
  • K is preferably 0-10
  • the drive wheel diameter D is preferably 0.3m-1.2m.
  • G 1 OOONm
  • n 64rpm that is, the rated output torque of the motor should be Above 1000Om, the rated output speed of the motor should be greater than 64 rpm. Therefore, in this embodiment, a permanent magnet synchronous motor with a rated output torque of 1200 Nm and a rated rotational speed of 85 rpm is selected.
  • a permanent magnet synchronous motor is preferably used, and a permanent magnet synchronous motor having an output torque of 300 Nm or more, an output of 5-45 Kw, and a rotation speed of 500 rpm or less is selected.
  • a permanent magnet synchronous motor having a rated output torque of 800 Nm, a rated output of 8 kw, and a rated rotational speed of 85 rpm is used.
  • the permanent magnet synchronous motor has to meet the requirements of high torque and low speed, which not only saves energy, but also avoids noise generated when the high speed motor works, further reducing the noise. The overall working noise of the pumping unit.
  • the motor 8 is mounted on the platform of the bracket 17, and the first pulley 9 is coaxially mounted on the output shaft of the motor 8, as shown in Fig. 1, the diameter of the first pulley 9 is small.
  • the drive shaft 18 of the pumping unit is also mounted on the platform of the bracket 17 via a bearing 21, and a second pulley 12 is coaxially mounted on the drive shaft 18, the second pulley 12 having a larger diameter than the first pulley 9.
  • the first pulley 9 and the second pulley 12 are connected by a belt 11. Since the second pulley 12 is fixed to the drive shaft 18 (e.g., by an interference fit or a keyed connection), the belt 1 1 can transmit the output torque and rotational speed of the motor 8 to the drive shaft 18.
  • the torque output to the second pulley 12 is twice the output torque of the motor 8, and is output to the second pulley 12.
  • the rotational speed is one-half of the output speed of the motor 8.
  • the pumping unit adopts a first-stage belt transmission.
  • the present invention can adopt various belt transmission modes, for example, a transmission method using a multi-stage belt, and preferably a two-stage belt transmission method.
  • the diameter of the driving pulley is smaller than the diameter of the driven pulley.
  • the belt may be installed in parallel, for example, between the first pulley 9 and the second pulley 12 6-8 belts.
  • the belt 1 1 can be of various suitable belts, such as a V-belt, a toothed belt, etc.
  • the belt 11 is a V-belt.
  • a drive wheel 19 is also fixed to the drive shaft, and a groove for accommodating the drive rope 16 is provided on the circumference of the drive wheel 19, so that the drive rope 16 can easily bypass the drive wheel 19.
  • One end of the drive rope 16 is connected to the suspension rod 14, and the suspension rope 14 is connected to the sucker rod 13, and the other end of the drive rope 16 is connected to the weight 4.
  • the counterweight 4 is set to balance the torque generated by the sucker rod 13.
  • the sucker rod 13 can move up and down in the vertical direction.
  • the counter disk 22 and the proximity switch 20 are employed as position measuring means for controlling the reverse rotation of the motor 8.
  • the counter disk 22 is coaxially fixed to the drive shaft 18, and a proximity switch 20 is provided on the platform of the bracket 17 and a small gap is left between the counter disk, and the proximity switch 20 is a magnetic switch. .
  • the proximity switch 20 counts the number of revolutions of the drive shaft 18.
  • the proximity switch 20 sends a signal to the electric control cabinet 1 to cause the PLC to reverse the motor 8 through the frequency converter. turn.
  • the position measuring device composed of the above counter disk 22 and the proximity switch 20 may be disposed on the platform of the bracket 17 and the drive shaft 18, or may be disposed in other portions of the transmission mechanism, for example, on the output shaft of the motor 8.
  • the position measuring device is not limited to the counting disc/proximity switch described above, and other suitable position measuring devices may be employed, such as a photoelectric encoder or the like.
  • a safety cord 15 is also provided in this embodiment.
  • One end of the safety cord 15 is fixed to the drive wheel 19, and the other end of the safety rope 15 is fastened to the counterweight 4 around the drive wheel 18.
  • the counterweight 4 is lowered, and the counterweight 4 drives the safety rope 15 to rotate the drive wheel 19 at a high speed, thereby causing the motor 8 to be overloaded.
  • the brake of the motor 8 10 brakes, the safety rope 15 tightens the weight, so that the weight can not fall freely, can avoid collision accidents.
  • the weight When the pumping unit is installed, the weight is lifted by the motor 8 to lift the weight, and the suspension 14 is lowered, so that the sucker rod 13 can be connected to the suspension 14.
  • the safety line 15 can be removed from the counterweight and used as a sling for the space small crane.
  • a guide wheel 5 as a guide mechanism is provided on the counterweight 4, and the guide rope 6 is sandwiched between the guide wheels 5 so that the movement direction is always vertical during the vertical movement of the counterweight 4.
  • an adjustable top wire 3 is provided at the bottom of the frame 7 to adjust the entire frame level.
  • a roller 2 is also provided at the bottom of the frame 7.
  • the pumping unit including a pumping mechanism, a motor, a counterweight, a drive shaft mounted on the bracket, a drive wheel mounted on the drive shaft, a first sprocket and a second sprocket
  • the pumping The mechanism and counterweight are connected by a drive rope that bypasses the drive wheel.
  • the oil pumping mechanism comprises: a sucker rod and a suspension rope.
  • the pumping unit further includes: a control reject connected to the motor and outputting a voltage of a set frequency to the motor, the control being rejected as a control device.
  • a first sprocket is disposed on the output shaft of the motor, and a second sprocket is mounted on the drive shaft.
  • the control device can still adopt the form of electronic control rejection, and an electronic device such as a frequency converter, a programmable controller (PLC), a brake unit, and a display is disposed in the electronic control rejection.
  • the output of the inverter is connected to the motor to operate the motor at a certain frequency and voltage.
  • the PLC can achieve further control of the frequency converter.
  • the motor uses a high-torque permanent magnet synchronous motor, and the high-torque permanent magnet synchronous motor is still regulated by an inverter that is electrically rejected.
  • the traction force ⁇ is equal to the difference between the gravity of the sucker rod and the counterweight balance, and also includes the resistance in the pumping operation.
  • Traction ⁇ varies depending on the depth of the well and the well condition.
  • the traction force of the motor output is 5880 ⁇ to 29400 ⁇ .
  • ⁇ is preferably 0-10, and the drive wheel diameter D is preferably 0.3m-1.2m.
  • a high-torque permanent magnet synchronous motor with a rated output torque of 1300 Nm, a rated output power of 20 kw, and a rated rotational speed of 200 rpm is selected.
  • the motor is mounted on the platform of the bracket, and the first sprocket is coaxially mounted on the output shaft of the motor, and the diameter of the first sprocket is small.
  • the drive shaft of the pumping unit is also mounted on the platform of the bracket, and a second sprocket is coaxially mounted on the drive shaft, the second sprocket having a larger diameter than the first sprocket.
  • the first sprocket and the second sprocket are connected by a chain.
  • the chain can transmit the output torque and speed of the motor to the drive shaft. Through the chain drive, it can withstand a larger load than the belt.
  • the torque output to the second sprocket is twice the output torque of the motor
  • the rotational speed output to the second sprocket is the motor output. One-half of the speed.
  • the drive shaft will rotate under the driving of the motor.
  • a drive wheel is fixed on the drive shaft, and a groove for accommodating the drive rope is arranged on the circumference of the drive wheel, whereby the drive rope bypasses the drive wheel, one end of the drive rope is connected to the suspension rope, and the suspension rope is connected to the sucker rod; The other end of the drive cord is connected to the counterweight.
  • the sucker rod can move up and down in the vertical direction.
  • a photoelectric encoder is employed as the position measuring device, and the photoelectric encoder can be disposed on the motor output shaft.
  • the working principle of the photoelectric encoder is well known to those skilled in the art and will not be described herein.
  • FIG. 3 is a schematic structural view of a toothless transmission pumping unit having a hoist according to a second embodiment of the present invention
  • FIGS. 4 and 5 are respectively a left side view and a top view of the toothless transmission pumping unit.
  • the pumping unit includes a main frame 301, a bracket 308, a motor 310, a brake 31 1 , a control device 309, a sucker rod 304, a suspension 321, a weight 314, a drive shaft 330, and a drive rope. 318.
  • the top of the main frame 301 has a bracket 308, the bracket 308 has a platform, the driving shaft 330 is mounted on the bracket 308, the driving wheel 329 is mounted on the driving shaft 330, the sucker rod 304 and the suspension rope
  • the 321 is coupled to the weight 314 by a drive cord 318 that bypasses the drive wheel 329.
  • the control device may take the form of an electronically controlled rejection 309.
  • the electronic control device 309 is provided with an electronic device such as a frequency converter, a programmable controller (PLC), a braking unit, and a display unit.
  • the inverter converts alternating current with constant voltage and frequency into voltage or frequency.
  • a frequency converter for motor control that changes both voltage and frequency.
  • the output of the frequency converter is connected to the motor 310 to operate the motor 310 at a certain frequency and voltage.
  • PLCs and other industrial computers can achieve further control of the frequency converter.
  • the display unit provides the user with an interface that can perform human-computer interaction.
  • manual control of the pumping unit is achieved by an electronically controlled dial 303 connected to the electronically controlled reject 309, which is located at a position convenient for the operator to operate, such as on the security door 302.
  • the motor 310 is mounted on a platform of a bracket 308, and a brake 31 1 is mounted on the motor 310, and the brake 31 1 stops the motor under the control of the electronically controlled 309.
  • the motor 310 is only used to provide torque and power during the pumping process, and is not responsible for the individual lifting of the weight 314. Therefore, the torque, power and other parameters of the motor 310 need only meet the requirements of driving the sucker rod 304.
  • the motor 310 rotates regularly in the normal direction and the reverse direction under the control of the electric control 309.
  • the driving rope 318 wound on the driving wheel 329 drives the weight 314 and the sucker rod 304.
  • the upper and lower reciprocating movements cause the pumping crucible 304 to drive the oil pump to extract the oil.
  • the hoist 328 is also mounted on the platform of the bracket 38.
  • the hoist 328 can draw the counterweight 314 directly through the hoisting rope 320, or it can be towed by other attachment means. For example, in the present embodiment, traction can be saved by pulling the counterweight 314 through the pulley assembly.
  • one end of the hoisting rope 320 is connected to the output end of the hoisting machine 328.
  • the hoisting rope 320 bypasses the fixed pulley 326, and then passes around the movable pulley 319, and the other end is fixed to the hoisting rope holder 325.
  • the hook on the movable pulley 319 is hung on the weight 314, and the hoisting machine 328 is activated by operating the electronic control panel 33, so that the weight 314 can be raised.
  • Using the winch 328 to lift the counterweight 314 can greatly reduce the power used by the motor 310 as compared to the manner in which the motor 310 directly lifts the weight box 314.
  • the winch 328 can not only increase the counterweight, but also can be used as a crane during workover.
  • a guide device is further mounted on the platform of the bracket 308, and the guide device includes: a guide wheel 334, a guide wheel shaft 335, a guide wheel frame 306, a support hinge shaft 332, and a guide wheel bearing 336.
  • the guide wheel carrier 306 is secured to the platform of the bracket 308 by a support hinge shaft 332.
  • the guide wheel 334 is fixed to the guide wheel axle 335, and the guide wheel axle 335 is guided by the guide axle
  • the carrier 336 is mounted on the guide wheel carrier 306.
  • One end of the drive cord 318 is connected to the weight 314, and the other end is connected to the suspension rod 321 across the circumference of the guide wheel 334 after bypassing the drive wheel 329.
  • the suspension 321 is connected to the sucker rod 304.
  • the arrangement of the guides maintains a distance between the pumping unit and the well, so by retracting the guide and the pumping mechanism (for example by rotating the guide wheel frame 306 about the support hinge shaft 332), sufficient maintenance can be provided for the well repair. Repair the work space without the need to move the pump unit as a whole.
  • the above-described guiding means may not be provided, and the driving rope 318 is only connected to the pumping mechanism and the weight 314 by bypassing the driving wheel 329, and these embodiments are still applicable to the pumping unit of the present invention.
  • a safety line 316 is coupled between the weight 314 and the drive wheel 329.
  • One end of the safety line 316 is fixed on the driving wheel 329, and the other end is connected to the weight 314.
  • the sucker rod 304 is disconnected, the weight 314 is lowered, and the weight 314 drives the safety line 316 to rotate the driving wheel 329 at a high speed.
  • the motor 310 generates an overload.
  • the brake 31 1 of the motor 310 brakes, and the safety line 316 tightens the weight 314, so that the weight 314 cannot be freely dropped, thereby avoiding a collision accident.
  • the transmission in the present embodiment is realized by a belt transmission.
  • the belt drive includes a first pulley 322, a second pulley 324, and a belt 323.
  • the first pulley 322 is coaxially mounted on the output shaft of the motor 310. As shown in FIG. 3, the diameter of the first pulley 322 is small.
  • the drive shaft 330 of the pumping unit is mounted on the bracket 308 via a bearing 331 on which the second pulley 324 and the drive wheel 329 are mounted, and the second pulley 324 has a larger diameter than the first pulley 322.
  • the first pulley 322 and the second pulley 324 are connected by a belt 323.
  • the belt 323 can transmit the output torque and rotational speed of the motor 310 to the drive shaft 330.
  • the torque output to the second pulley 324 is twice the output torque of the motor 310, and is output to the second pulley 324.
  • the rotational speed is one-half of the output speed of the motor 310.
  • the pumping unit adopts a first-stage belt transmission mode.
  • the present invention can adopt various belt transmission modes, for example, a multi-stage belt transmission method, for example, a two-stage belt transmission mode can be adopted.
  • the diameter of the driving pulley is smaller than the diameter of the driven pulley.
  • the belt in order to drive a larger load, can be in parallel
  • a plurality of installed, for example, 6-8 belts can be installed between the first pulley 322 and the second pulley 324.
  • the belt 323 can be of various suitable belts, such as a V-belt, a toothed belt, etc. In order to extend the life of the belt 323, the belt 323 is a V-belt.
  • the motor 310 can be used with all motors that can satisfy the pumping conditions.
  • the traction force ⁇ is equal to the difference in gravity between the sucker rod 304 and the counterweight 3 14 , and also includes the resistance generated in the pumping operation. Traction ⁇ varies depending on the depth of the well and the well condition.
  • the traction force of the motor output is ⁇ 3000 ⁇ to 50,000 ⁇ .
  • ⁇ is preferably 0-10, and the drive wheel diameter D is preferably 0.2m - 1.5m.
  • a sprocket chain can also be used in place of the belt drive. That is, the transmission includes a first sprocket, a second sprocket, and a chain. Wherein, the first sprocket is coaxially mounted on the output shaft of the motor 310, and the diameter of the first sprocket is small.
  • the drive shaft 330 of the pumping unit is mounted on the bracket 308 via a bearing 33 1 on which a second sprocket and a drive wheel 329 are coaxially mounted, the second sprocket having a larger diameter than the first sprocket.
  • the first sprocket and the second sprocket are connected by a chain. Since the second sprocket is fixed to the drive shaft 330 (e.g., by interference fit or keying), the chain can transmit the output torque and rotational speed of the motor 3 10 to the drive shaft 330.
  • the motor 310 is a permanent magnet synchronous motor, and a permanent magnet synchronous motor having an output torque of 300 Nm or more, an output of 5-45 Kw, and a rotational speed of 500 rpm or less is selected.
  • a zigzag motor having a rated output torque of 800 Nm, a rated output of 8 kw, and a rated speed of 85 rpm is used. This is because the synchronous motor can meet the requirements of high torque and low speed, which not only helps to save energy, but also avoids the noise generated when the high speed motor works, and further reduces the overall working noise of the pumping unit.
  • the position measuring device is employed to control the reverse rotation of the motor 10.
  • a counter disk and a proximity switch are used as the position measuring device.
  • the counter disk is coaxially fixed to the drive shaft 330, and a proximity switch is provided on the platform of the bracket 308 with a small gap left between the counter and the counter.
  • the proximity switch is a magnetic switch. In the working stroke of the sucker rod 304, the proximity switch counts the number of revolutions of the drive shaft. When the predetermined number of revolutions is reached, the proximity switch sends a signal to the control device to cause the electronically controlled switch 309 to control the motor 310 to reverse.
  • the position measuring device described above may also be provided at other parts of the pumping unit, for example, on the output shaft of the motor 310.
  • the position measuring device is not limited to the above-mentioned counter/proximity switch, and other suitable position measuring devices may be employed, such as a photoelectric encoder or the like.
  • the main frame 301 is preferably formed into a cylindrical structure which is a semi-enclosed space in which the upper and lower sides are ventilated.
  • the cylindrical structure is preferably a cylindrical structure, so that the cylindrical weight 314 located in the cylindrical frame can be normally operated up and down without wind disturbance, which obviously improves the reliability of the pumping unit operation and safety.
  • the main frame 301 is further provided with an escalator 305, and a lower portion of the main frame 301 is provided with a security door 302 to prevent the pumping unit parts inside the main frame 301 from being stolen.
  • An electronic control panel 303 is disposed on the back of the security door 302. Through the electronic control panel 303, the operator can control the electronic control device in the entire electronically controlled rejection 309.

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  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

L'invention concerne une unité de pompage de p uits sans entraînement par engrenage qui comprend un cadre principal (7, 301), un support (17, 308), un moteur (8, 310), une tige de pompage (13, 304), un balancier (14, 321), un contrepoids (4, 314), un arbre d'entraînement (18, 330), des lignes d'entraînement (16, 318), une roue d'entraînement (19, 329), une première poulie à courroie (9, 322), une seconde poulie à courroie (12, 324) et des courroies (11, 323). Le support (17, 308) monté sur le dessus du cadre principal (7, 301) comporte une plaque sur laquelle le moteur (8, 310) est monté. L'arbre d'entraînement (18, 330) est fixé sur le support (17,308). la roue d'entraînement (19, 329) est montée sur l'arbre d'entraînement (18, 330). La tige de pompage (13, 304) et le balancier (14, 321) se connectent avec le contrepoids (4, 314) à travers les lignes d'entraînement (16, 318) enroulées sur la roue d'entraînement (19, 329) qui est montée sur l'arbre d'entraînement (18, 330). La première poulie à courroie (9, 322) est montée sur un arbre de sortie du moteur (8, 310) et la seconde poulie à courroie (12, 324) est montée sur l'arbre d'entraînement (18, 330). La première poulie à courroie (9, 322) est connectée à la seconde poulie à courroie (12, 324) à travers les courroies. L'unité de pompage a de nombreux avantages, tels qu'une structure compacte, un bruit inférieur, aucune fuite d'huile, une puissance inférieure requise et un coût inférieur.
PCT/CN2007/002347 2007-04-26 2007-08-06 Unité de pompage de puits sans entraînement par engrenage WO2008131610A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN200710098039.1 2007-04-26
CN 200710098039 CN101037936A (zh) 2007-04-26 2007-04-26 无齿传动抽油机
CN200710097714.9 2007-04-28
CN 200710097714 CN101046145A (zh) 2007-04-28 2007-04-28 抽油机

Publications (1)

Publication Number Publication Date
WO2008131610A1 true WO2008131610A1 (fr) 2008-11-06

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Country Link
WO (1) WO2008131610A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2479751C1 (ru) * 2011-08-26 2013-04-20 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Тюменский государственный нефтегазовый университет" (ТюмГНГУ) Мобильный станок-качалка
CN104514866A (zh) * 2013-09-27 2015-04-15 中国石油天然气股份有限公司 抽油机磁力耦合-齿轮传动装置
CN105464631A (zh) * 2016-01-05 2016-04-06 靳宝才 滚筒式－平衡差抽油机
CN106894809A (zh) * 2017-03-17 2017-06-27 董少明 三角形链条双换向抽油机
CN107524424A (zh) * 2017-10-10 2017-12-29 熊亮 抽油机移动装置
CN110939410A (zh) * 2019-12-26 2020-03-31 张海涛 一种用于皮带式抽油机的速度保护控制器
CN112709912A (zh) * 2021-01-09 2021-04-27 傅广林 一种用于led显示屏的弧形移动式机械车台

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FR2639080A1 (fr) * 1988-11-16 1990-05-18 Azerbaidzhansky P Konstru Organe d'entrainement a longue course pour une installation de pompage a tiges pour puits, notamment de petrole
US5829958A (en) * 1997-02-24 1998-11-03 Beautech, Inc. Pumping unit with speed reducing means
CN1279353A (zh) * 1999-07-06 2001-01-10 李裕谨 摩擦驱动自锁滚动式抽油机
CN2453154Y (zh) * 2000-11-09 2001-10-10 韩晗 程控式抽油机
CN2563302Y (zh) * 2002-07-09 2003-07-30 芦旭 一种采油机机架
CN1710248A (zh) * 2004-08-06 2005-12-21 金成群 抽油修井机
CN200975333Y (zh) * 2006-10-10 2007-11-14 金成群 无齿传动抽油机

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FR2639080A1 (fr) * 1988-11-16 1990-05-18 Azerbaidzhansky P Konstru Organe d'entrainement a longue course pour une installation de pompage a tiges pour puits, notamment de petrole
US5829958A (en) * 1997-02-24 1998-11-03 Beautech, Inc. Pumping unit with speed reducing means
CN1279353A (zh) * 1999-07-06 2001-01-10 李裕谨 摩擦驱动自锁滚动式抽油机
CN2453154Y (zh) * 2000-11-09 2001-10-10 韩晗 程控式抽油机
CN2563302Y (zh) * 2002-07-09 2003-07-30 芦旭 一种采油机机架
CN1710248A (zh) * 2004-08-06 2005-12-21 金成群 抽油修井机
CN200975333Y (zh) * 2006-10-10 2007-11-14 金成群 无齿传动抽油机

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2479751C1 (ru) * 2011-08-26 2013-04-20 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Тюменский государственный нефтегазовый университет" (ТюмГНГУ) Мобильный станок-качалка
CN104514866A (zh) * 2013-09-27 2015-04-15 中国石油天然气股份有限公司 抽油机磁力耦合-齿轮传动装置
CN105464631A (zh) * 2016-01-05 2016-04-06 靳宝才 滚筒式－平衡差抽油机
CN106894809A (zh) * 2017-03-17 2017-06-27 董少明 三角形链条双换向抽油机
CN107524424A (zh) * 2017-10-10 2017-12-29 熊亮 抽油机移动装置
CN110939410A (zh) * 2019-12-26 2020-03-31 张海涛 一种用于皮带式抽油机的速度保护控制器
CN112709912A (zh) * 2021-01-09 2021-04-27 傅广林 一种用于led显示屏的弧形移动式机械车台
CN112709912B (zh) * 2021-01-09 2024-05-14 傅广林 一种用于led显示屏的弧形移动式机械车台

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