阅读说明：本技术 一种稠油开发排采设备 (Thickened oil development, drainage and production equipment ) 是由 王雪玲 葛利俊 郭云龙 樊建博 梁志宏 万金涛 王栋 刘铁夫 于 2021-01-22 设计创作，主要内容包括：一种稠油开发排采设备。本发明包括底座、机架、配重车、控制柜、控制系统,机架固定安装在底座上,机架上端固定安装有顶部平台,顶部平台上固定安装有动力滚筒总成、摇臂导向轮装置、绞车装置、刹车系统；动力滚筒总成的电机为开关磁阻电机,电机设置在滚筒内,对应电机的滚筒内表面设置有刮油器；摇臂导向轮装置和绞车装置组成排采设备的井口让位机构；顶部平台上设置有调偏机构。其有益效果是,设计合理,结构紧凑,操作简单方便,适用面广,噪音低,运行可靠,安全环保；动力滚筒总成设置的刮油器和透气帽,解决了滚筒内电机的散热和滚筒漏油问题；控制系统最大限度确保井场设施安全,能够满足稠油开采需要。(A thick oil development, drainage and recovery device. The invention comprises a base, a rack, a counterweight vehicle, a control cabinet and a control system, wherein the rack is fixedly arranged on the base, the upper end of the rack is fixedly provided with a top platform, and a power roller assembly, a rocker arm guide wheel device, a winch device and a brake system are fixedly arranged on the top platform; the motor of the power roller assembly is a switched reluctance motor, the motor is arranged in the roller, and an oil wiper is arranged on the inner surface of the roller corresponding to the motor; the rocker arm guide wheel device and the winch device form a wellhead abdicating mechanism of the row mining equipment; and the top platform is provided with an offset adjusting mechanism. The novel air conditioner has the advantages of reasonable design, compact structure, simplicity and convenience in operation, wide application range, low noise, reliability in operation, safety and environmental friendliness; the oil wiper and the ventilation cap arranged on the power roller assembly solve the problems of heat dissipation of a motor in the roller and oil leakage of the roller; the control system ensures the safety of well site facilities to the maximum extent and can meet the requirements of thick oil exploitation.)

1. The utility model provides a viscous crude is developed and is arranged and adopt equipment, includes base, frame, counter weight car, switch board, control system, and frame fixed mounting has top platform, characterized by on the base, frame upper end fixed mounting:

a power roller assembly, a rocker guide wheel device, a winch device and a brake system are fixedly arranged on the top platform; one end of the front power transmission belt is fixedly connected with the roller, and the other end of the front power transmission belt is downwards connected with the sucker rod connector through the rocker guide wheel device; one end of the rear power transmission belt is fixedly connected with the roller, and the other end of the rear power transmission belt is connected with the counterweight vehicle;

the motor of the power roller assembly is a switched reluctance motor, the motor is arranged in the roller, and an oil wiper is arranged on the inner surface of the roller corresponding to the motor; when the roller rotates, the oil wiper collects and sprays the cooling oil in the roller onto the motor and the planetary reduction mechanism;

the rocker arm guide wheel device and the winch device form a wellhead abdicating mechanism of the row mining equipment; and a polished rod deviation adjusting mechanism is arranged on the top platform.

2. The thickened oil development, drainage and recovery equipment as set forth in claim 1, wherein: the motor drives the roller to rotate through the planetary speed reducing mechanism;

end covers are fixedly arranged at two ends of the roller, shaft ends of a right flange shaft and a left flange shaft which are connected with the motor shell penetrate through the end covers to be arranged in supports positioned at two sides of the roller, and shaft ends of the right flange shaft and the left flange shaft which are matched with the supports are flat shafts; the support is fixedly arranged on the top platform;

and a cable of the motor and a control signal wire of the control system are led out of the junction box outside the roller through the axial through hole of the left flange shaft.

3. The thickened oil development, drainage and recovery equipment as claimed in claim 1 or 2, wherein:

the oil scraper comprises an oil scraping cylinder, a connecting plate and an oil scraping plate, wherein one side of the connecting plate is fixedly connected with the inner wall of the oil scraping cylinder, the other side of the connecting plate is fixedly provided with an oil scraping plate I, the included angle between the oil scraping plate I and the connecting plate is 105-118 degrees, and the oil scraping plate I is arranged along the radial direction of the oil scraping cylinder;

scrape oil cylinder inner wall circumference equipartition and have scraper I8 or more than 8, scraper I sets up in pairs, and 2 scraper I in every centering set up in opposite directions.

4. The thickened oil development, drainage and recovery equipment as set forth in claim 3, wherein: the middle part of connecting plate is fixed and is provided with frizing II, and frizing I is 10 ~ 18 with the contained angle of frizing II, and frizing I and frizing II and connecting plate form the oil storage chamber of storage cooling oil.

5. The heavy oil development, drainage and recovery equipment as set forth in claim 4, wherein: and the gland of the support is provided with air holes, the air holes correspond to the radial through holes on the left flange shaft and the right flange shaft, and the radial through holes are communicated with the axial through holes of the left flange shaft and the right flange shaft.

6. The heavy oil development, drainage and recovery equipment as set forth in claim 5, wherein: and an oil plug is fixedly arranged on the end cover at the end part of the roller in the axial direction, and the outermost side of the outer diameter of the oil plug hole is lower than the inner wall of the roller.

7. The thickened oil development, drainage and recovery equipment as set forth in claim 1, wherein: the frame is trapezoidal, has the guide rail of putting to one side along the support body fixed mounting of frame, the counterweight car removes along the guide rail.

8. The thickened oil development, drainage and recovery equipment as set forth in claim 1, wherein: when the sucker rod moves upwards, the front power transmission belt is wound on the outer circumference of the roller, and the rear power transmission belt is released from the roller; when the sucker rod moves downwards, the rear power transmission belt is wound on the outer circumference of the roller, and the front power transmission belt is released from the roller; the winding directions of the front power transmission belt and the rear power transmission belt on the roller are opposite;

the number of the front power transmission belts is 2, the front power transmission belts are wound at the middle part of the roller and are arranged symmetrically left and right; the quantity of back power transmission area is 2, twines respectively 2 preceding power transmission area outsides on the cylinder, and bilateral symmetry sets up.

9. The thickened oil development, drainage and recovery equipment as set forth in claim 1, wherein: the control system comprises a magnetic resistance speed regulating system, a carrier sensor, a PLC controller and a man-machine interaction screen, wherein the PLC controller receives a reversing positioning switch signal and stroke and frequency information input by a man-machine interaction interface, and feeds the stroke and frequency information back to the magnetic resistance speed regulating system after calculation processing, and the magnetic resistance speed regulating system controls the forward and reverse conversion, the rotating speed and the number of rotating turns of a motor according to the received PLC controller feedback information and the carrier sensor signal; the optical rod upper limit switch and the optical rod lower limit switch are received to signal the forced stop;

the polish rod upper limit switch is installed at the lower end of the rack, the polish rod lower limit switch is installed at the upper end of the rack, and the reversing positioning switch is installed in the middle of the rack.

10. The heavy oil development, drainage and recovery equipment as set forth in claim 9, wherein: the sucker rod connector is provided with a load sensor, the load sensor monitors the numerical value of a suspension point load in the working process of the drainage and production equipment, and when the load is zero or the load is increased to exceed the design upper limit, the drainage and production equipment stops running immediately; in the descending process of the sucker rod, when the detected suspension point load value is smaller than a set value and is not zero, the control system controls the motor to reduce the rotating speed to adapt to the descending speed of the sucker rod.

Technical Field

The invention relates to crude oil exploitation equipment, in particular to thick oil exploitation, drainage and exploitation equipment, and belongs to the technical field of oil exploration and development.

Background

Along with the decreasing of the yield of conventional petroleum resources, the exploitation of high-viscosity heavy oil with richer oil reservoirs is more and more emphasized. Because the viscosity of thick oil is high, the problems of low recovery ratio, short service life of equipment and high exploitation cost exist in the conventional oil pumping equipment and exploitation method, so the demand of long-stroke oil extraction equipment with intelligent parameter adjustment is more and more urgent. The motor-reversing walking-beam-free pumping unit belongs to a tower type direct balance pumping unit, and a motor drives a roller to rotate forwards and backwards, so that a steel wire rope or a rubber belt coated outside the roller draws a polished rod to do up-and-down reciprocating motion, and oil is pumped to the ground. The motor is placed outside the roller, the reducer is driven to rotate through the connection of a coupler or a belt, and then the roller is driven to rotate by the reducer, so that the connection mode is large in occupied area and heavy in weight, and is inconvenient to install and transport, and the noise is large and does not meet the environmental protection requirement; the other is that the motor and the reducer are both arranged in the roller, which has the advantages of compact structure, small occupied space and low noise, but because the motor is in the roller, the heat generated by the motor movement is not easy to dissipate, and the like, the problems of easy motor burnout, roller oil leakage and the like exist, which causes high failure rate of the roller, can not be maintained on site, an intelligent control system suitable for thick oil exploitation is not arranged, the requirements of the thick oil exploitation process can not be met, and the application of the intelligent control system is further limited.

Disclosure of Invention

In order to overcome the defects of the mining equipment in the conventional thick oil development process, the invention provides thick oil development, drainage and mining equipment.

The technical scheme adopted by the invention for solving the technical problems is as follows: a thickened oil development, drainage and production device comprises a base, a rack, a counterweight vehicle, a control cabinet and a control system, wherein the rack is fixedly arranged on the base, a top platform is fixedly arranged at the upper end of the rack, and a power roller assembly, a rocker arm guide wheel device, a winch device and a brake system are fixedly arranged on the top platform; one end of the front power transmission belt is fixedly connected with the roller, and the other end of the front power transmission belt is downwards connected with the sucker rod connector through the rocker guide wheel device; one end of the rear power transmission belt is fixedly connected with the roller, and the other end of the rear power transmission belt is connected with the counterweight vehicle.

The motor of the power roller assembly is a switched reluctance motor, the motor is arranged in the roller, and an oil wiper is arranged on the inner surface of the roller corresponding to the motor; when the roller rotates, the oil wiper collects and sprinkles cooling oil in the roller onto the motor and the planetary reduction mechanism.

The rocker arm guide wheel device and the winch device form a wellhead abdicating mechanism of the row mining equipment; and a polished rod deviation adjusting mechanism is arranged on the top platform.

The motor drives the roller to rotate through the planetary speed reducing mechanism.

End covers are fixedly arranged at two ends of the roller, shaft ends of a right flange shaft and a left flange shaft which are connected with the motor shell penetrate through the end covers to be arranged in supports positioned at two sides of the roller, and shaft ends of the right flange shaft and the left flange shaft which are matched with the supports are flat shafts; the support is fixedly arranged on the top platform.

And a cable of the motor and a control signal wire of the control system are led out of the junction box outside the roller through the axial through hole of the left flange shaft.

The oil wiper comprises an oil wiping cylinder, a connecting plate and an oil wiping plate, wherein one side of the connecting plate is fixedly connected with the inner wall of the oil wiping cylinder, the other side of the connecting plate is fixedly provided with the oil wiping plate I, the included angle between the oil wiping plate I and the connecting plate is 105-118 degrees, and the oil wiping plate I is arranged along the radial direction of the oil wiping cylinder.

Further, a frizing section of thick bamboo inner wall circumference equipartition has frizing I8 or more than 8, frizing I sets up in pairs, and 2 frizing I in every pair set up in opposite directions.

Furthermore, the middle part of connecting plate is fixed and is provided with frizing II, and frizing I is 10 ~ 18 with the contained angle of frizing II, and frizing I and frizing II and connecting plate form the oil storage chamber of storage cooling oil.

And the gland of the support is provided with air holes, the air holes correspond to the radial through holes on the left flange shaft and the right flange shaft, and the radial through holes are communicated with the axial through holes of the left flange shaft and the right flange shaft.

And an oil plug is fixedly arranged on the end cover at the end part of the roller in the axial direction, and the outermost side of the outer diameter of the oil plug hole is lower than the inner wall of the roller.

The frame is trapezoidal, has the guide rail of putting to one side along the support body fixed mounting of frame, the counterweight car removes along the guide rail.

When the sucker rod moves upwards, the front power transmission belt is wound on the outer circumference of the roller, and the rear power transmission belt is released from the roller; when the sucker rod moves downwards, the rear power transmission belt is wound on the outer circumference of the roller, and the front power transmission belt is released from the roller; the winding directions of the front power transmission belt and the rear power transmission belt on the roller are opposite.

The number of the front power transmission belts is 2, the front power transmission belts are wound at the middle part of the roller and are arranged symmetrically left and right; the quantity of back power transmission area is 2, twines respectively 2 preceding power transmission area outsides on the cylinder, and bilateral symmetry sets up.

The control system comprises a magnetic resistance speed regulating system, a carrier sensor, a PLC controller and a man-machine interaction screen, wherein the PLC controller receives a reversing positioning switch signal and stroke and frequency information input by a man-machine interaction interface, and feeds the stroke and frequency information back to the magnetic resistance speed regulating system after calculation processing, and the magnetic resistance speed regulating system controls the forward and reverse conversion, the rotating speed and the number of rotating turns of a motor according to the received PLC controller feedback information and the carrier sensor signal; the received signals of the upper limit switch of the polished rod and the lower limit switch of the polished rod are forced to stop.

The polish rod upper limit switch is installed at the lower end of the rack, the polish rod lower limit switch is installed at the upper end of the rack, and the reversing positioning switch is installed in the middle of the rack.

Furthermore, a load sensor is arranged on the sucker rod connector, the load sensor monitors the numerical value of the load of a suspension point in the working process of the drainage and production equipment, and when the load is zero or the load is increased to exceed the design upper limit, the drainage and production equipment stops running immediately; in the descending process of the sucker rod, when the detected suspension point load value is smaller than a set value and is not zero, the control system controls the motor to reduce the rotating speed to adapt to the descending speed of the sucker rod.

The invention has the advantages of reasonable design, compact structure, simple and convenient operation, wide application range, low noise, reliable operation, safety and environmental protection; the oil wiper and the ventilation cap arranged on the power roller assembly solve the problems of heat dissipation of a motor in the roller and oil leakage of the roller; the control system ensures the safety of well site facilities to the maximum extent, can meet the requirements of thickened oil exploitation, and improves the working efficiency and the single well recovery ratio.

Drawings

Fig. 1 is a schematic structural view of a thick oil development and drainage apparatus according to the present invention.

FIG. 2 is a schematic view of the power roller assembly of the present invention.

Fig. 3 is a schematic diagram of the oil scraper structure of the present invention.

In the figure: 1. the automatic oil-well pumping unit comprises a base, 2 parts of a rack, 3 parts of a sucker rod connector, 4 parts of a front power transmission belt, 5 parts of a rocker arm guide wheel device, 6 parts of a winch device, 7 parts of a power roller assembly, 8 parts of a brake system, 9 parts of a rear power transmission belt, 10 parts of a guide rail, 11 parts of a polish rod lower limit switch, 12 parts of a counterweight vehicle, 13 parts of a reversing positioning switch, 14 parts of a load sensor, 15 parts of an oil storage cavity, 16 parts of a polish rod upper limit switch, 17 parts of a control cabinet, 18 parts of a top platform, 21 parts of a left flange shaft, 22 parts of a support, 23 parts of an end cover, 24 parts of a planetary speed reducing mechanism, 25 parts of a roller, 26 parts of a control system, 27 parts of a motor, 28 parts of a ventilation cap, 29 parts of a junction box, 30 parts of a right flange shaft, 31 parts of an oil scraper.

Detailed Description

The invention is further illustrated by the following figures and examples. However, it should be understood by those skilled in the art that the present invention is not limited to the specific embodiments listed, and should be included within the scope of the present invention as long as the spirit of the present invention is met.

In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "left", "right", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; they may be mechanically coupled, directly coupled, indirectly coupled through an intermediary, or may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

See figure 1. The invention discloses thick oil development, drainage and production equipment which comprises a base 1, a rack 2, a balance weight vehicle 12, a control cabinet 17 and a control system 26, wherein the rack 2 is fixedly arranged on the base 1, the upper end of the rack 2 is fixedly provided with a top platform 18, and the top platform 18 is fixedly provided with a power roller assembly 7, a rocker arm guide wheel device 5, a winch device 6 and a brake system 8. The rocker arm guide wheel device 5 and the winch device 6 form a wellhead abdicating mechanism of the row mining equipment; and an offset adjusting mechanism is arranged on the top platform 18, so that a polished rod is convenient to center the wellhead, and the machine calibration of the pumping unit is easily realized.

One end of the front power transmission belt 4 is fixedly connected with the roller 25, and the other end of the front power transmission belt is downwards connected with the sucker rod connector 3 through the rocker guide wheel device 5; one end of the rear power transmission belt 9 is fixedly connected with the roller 25, and the other end is downwards connected with the counterweight vehicle 12.

When the sucker rod moves upwards, the front power transmission belt 4 is wound on the outer circumference of the roller 25 step by step, and the rear power transmission belt 9 is pulled downwards by the balance weight vehicle 12; when the sucker rod moves downwards, the rear power transmission belt 9 is wound on the outer circumference of the roller 25 step by step, and the front power transmission belt 4 moves downwards along with the sucker rod; the front power transmission belt 4 and the rear power transmission belt 9 are wound on the rollers 25 in opposite directions. In order to reduce the influence of wind load, it is preferable that the number of the front power transmission belts 4 is 2, and the front power transmission belts are wound around the middle part of the drum 25 and arranged symmetrically; the number of the rear power transmission belts 9 is 2, the rear power transmission belts are respectively wound on the outer sides of the 2 front power transmission belts 4 on the roller 25 and are arranged in a bilateral symmetry mode.

See figure 2. The motor 27 of the power roller assembly 7 is a switched reluctance motor, the motor 27 is arranged in the roller 25, and an oil wiper 31 is fixedly arranged on the inner surface of the roller 25 corresponding to the motor 27. The switched reluctance motor is suitable for frequent start-stop and positive and negative rotation operation, has the characteristics of large starting torque and small starting current, and is suitable for heavy oil exploitation equipment.

See figure 3. The oil wiper 31 comprises an oil wiping cylinder 32, a connecting plate 33 and an oil wiping plate, one side of the connecting plate 33 is fixedly connected with the inner wall of the oil wiping cylinder 32, the other side of the connecting plate is fixedly provided with an oil wiping plate I34, the included angle between the oil wiping plate I34 and the connecting plate 33 is 105-118 degrees, and the oil wiping plate I34 is arranged along the radial direction of the oil wiping cylinder 32.

Along scrape oil cylinder 32 inner wall circumference equipartition have 8 or more than 8 frings I34, frings I34 set up in pairs, and 2 frings I34 in every pair set up in opposite directions and constitute oil storage chamber 15, no matter cylinder 25 corotation or reversal, and oil scraper 31 collects the oil storage intracavity with the coolant oil in the cylinder, and when the oil scraper left the cylinder bottom along with the rotation of cylinder, spilled the coolant oil in the oil storage intracavity on motor 27 and side.

Further, the middle part of connecting plate 33 is still fixed and is provided with frizing II 35, and frizing I34 is not parallel to each other with frizing II 35 the two, and the contained angle between the two is 10 ~ 18, sets up frizing I34, frizing II 35 and is convenient for form a plurality of oil storage chamber 15 that can save the coolant oil, can collect the coolant oil more effectively, obtains better cooling effect.

The roller 25 is filled with cooling oil, and the liquid level of the cooling oil is about 1/3 of the diameter of the roller 25. When the roller 25 rotates, the oil scraper 31 collects the cooling oil in the roller in the oil storage cavity and sprays the cooling oil on the motor 27 and the speed reducing mechanism, so that the motor, the speed reducing gear and the bearing in the roller 25 are cooled and lubricated, the temperature of the motor 27 is effectively reduced, and the service life of the motor is prolonged.

See figure 2. The motor 27 drives the drum 25 to rotate through the planetary reduction mechanism 24.

The both ends fixed mounting of cylinder 25 has end cover 23, and the axle head of the right flange axle 30 of being connected with motor 27 casing, left flange axle 21 passes end cover 23 and installs in the support 22 that is located the cylinder 25 both sides, and the axle head of right flange axle 30, left flange axle 21 and support 22 complex is the flat axle, prevents that left and right flange axle from rotating. The support 22 is fixedly mounted to the top platform 18.

The cable of the motor 27 and the control signal wire of the control system 26 are led out to a junction box 29 outside the roller 25 through an axial through hole of the left flange shaft 21.

Be provided with the bleeder vent on the gland of support 22, the bleeder vent is corresponding to the epaxial radial through-hole of left flange axle 21, right flange axle 30, and this radial through-hole and the axial through-hole UNICOM of left flange axle 21, right flange axle 30 install the ventilative cap 28 in the bleeder vent and be used for balancing the internal and external pressure of cylinder 25, prevent because the too big oil leak of cylinder 25 and the sealed department of end cover 23 that causes of cylinder internal gas pressure, still have the heat dissipation function simultaneously, reduce the temperature in the cylinder 25.

The end cover 23 fixedly installed at the end of the roller 25 is axially provided with an oil plug for replacing the cooling oil in the roller 25. Preferably, the oil plug is arranged at the position close to the cylinder wall of the roller, and when the roller 25 is rotated to enable the oil plug to be positioned at a low position, the cooling oil in the roller 25 can be conveniently replaced on an oil well site without disassembling the machine, and impurities in the oil can be completely discharged.

Further, the rack 2 is trapezoidal, an inclined guide rail 10 is fixedly mounted along a rack body of the rack 2, and the counterweight vehicle 12 moves along the guide rail 10.

Further, the control system 26 includes a magnetic resistance speed regulating system, a carrier sensor, a PLC controller, and a human-computer interaction screen, receives the signal of the reversing positioning switch 13 and stroke information input by the human-computer interaction interface through the PLC controller, and feeds back the information to the magnetic resistance speed regulating system after calculation processing, and the magnetic resistance speed regulating system controls the forward-reverse conversion, the rotating speed, and the number of turns of the motor 27 according to the received feedback information of the PLC controller and the signal of the carrier sensor; the optical rod upper limit switch 16 and the optical rod lower limit switch 11 are received to carry out signal forced shutdown for stroke overrun protection.

The installation position of the polish rod upper limit switch 16 is close to the lower end part of the frame 2, the installation position of the polish rod lower limit switch 11 is close to the upper end part of the frame 2, and the reversing positioning switch 13 is installed in the middle of the frame 2.

The sucker rod connector 3 is provided with a load sensor 14, the load sensor 14 monitors the numerical value of a suspension point load in the working process of the discharging and extracting equipment, and when the load is zero (broken rod) or the load is increased to exceed the design upper limit (pump clamping), the operation is stopped immediately, so that the discharging and extracting equipment is protected. Particularly, in the descending process of the thick oil pumping rod, when the detected suspension point load value is smaller than a set value and is not zero, the control system controls the motor to reduce the rotating speed to adapt to the descending speed of the pumping rod, and the impact caused by mutual jacking of the pumping unit and the pumping rod is prevented.

The working process of the thickened oil development, drainage and recovery equipment is as follows:

firstly, after the drainage and mining equipment is installed, a counterweight vehicle is on the ground, a starting motor drives a roller to rotate reversely, and a rear power transmission belt is wound on the outer circumference of the roller step by step to drive the counterweight vehicle to move upwards; when the sucker rod connector reaches the position of a bottom dead center and is connected with a sucker rod to hang a load of a wellhead, the roller rotates forwards, the front power transmission belt is wound on the outer circumference of the roller step by step until the sucker rod connector moves to the top dead center, and the counterweight vehicle is at a low position; and then adding the counter weights into the counter weight vehicle to a certain amount, and starting a normal operation mode of the drainage and mining equipment.

When the pumping rod connector is positioned at a low point under the normal operation state of the drainage and production equipment, the motor drives the roller to rotate forwards, the front power transmission belt is wound on the roller, the pumping rod moves upwards, the rear power transmission belt is released, and the counterweight vehicle moves downwards; when the sucker rod connector reaches the top dead center, the diameter of a roller of the power transmission belt before connection is increased due to the increase of the winding turns of the transmission belt, and the outer diameter is increased; the diameter of the roller of the power transmission belt after connection is reduced due to the release of the transmission belt; at the moment, the front power transmission belt and the rear power transmission belt generate moment difference due to different winding radiuses on the roller, so that the power roller is assisted to realize reversing. When the polish rod is at the highest point, under the control of the intelligent control system, the motor drives the roller to rotate reversely, the sucker rod goes down, the counterweight vehicle goes up, and the sucker rod connector reaches the bottom dead center. The thick oil is pumped to the ground by the circular reciprocating motion.

When the oil liquid becomes thick in the running process, the sucker rod is difficult to descend, the load becomes small at the moment, the load sensor transmits a detected load reduction signal to the PLC, the controller feeds the rotating speed of the roller back to the magnetic resistance speed regulating system through calculation processing, and the magnetic resistance speed regulating system reduces the rotating speed of the motor by combining with the position information of the motor rotor provided by the carrier sensor.

The oil scraper and the ventilation cap are arranged on the power roller assembly of the thick oil development, drainage and production equipment, so that the problems of heat dissipation of a motor in the roller and oil leakage of the roller are solved, and the thick oil drainage and production equipment is compact in structure, low in noise and reliable in operation; the reliable installation of a large-torque motor for the heavy oil recovery is realized; the power roller and the front and rear power transmission belts fixed on the power roller act in a matching way, so that the reversing impact is reduced, and the energy-saving effect is achieved; the counterweight vehicle runs along the inclined plane of the rack, so that adverse effects caused by swinging of the counterweight due to wind load are overcome, and stable running of the counterweight is ensured; and the safety of well site facilities is ensured to the maximum extent in the thick oil exploitation process of the discharging and exploiting equipment.

It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design many alternative embodiments without departing from the scope of the appended claims.