Oil pumping unit using concentric dual-shaft drive control device

Abstract

An oil pumping unit using a concentric dual-shaft drive control device, relating to the technical field of petroleum extraction apparatuses. The oil pumping unit comprises a base (11) and a transmission chain (3), disposed on a platform (26); a box-type derrick (12), a power motor (18) and a speed reducer (1) are fixedly disposed on the base (11); a platform (26) is fixedly disposed on the top of the box-type derrick (12); a drum (10) and an upper sprocket (14) are rotatably disposed on the platform (26); a lower sprocket (2) is fixedly disposed on an output shaft of the speed reducer (1); the transmission chain (3) has a transmission connection to the upper sprocket (14) and the lower sprocket (2), and is fixedly connected to a counterweight (5); a transmission belt (7) is disposed on the drum (10), one end of the transmission belt (7) being connected to the counterweight (5), and the other end thereof being connected to a sucker rod; the power motor (18) has a transmission connection to the speed reducer (1). This solves the problem in the existing technology of high energy consumption for a conventional beam oil pumping unit.

Description

Pumping unit using concentric dual-shaft drive control equipment Technical Field

[0001] The present invention relates to the technical field of oil collection devices, in particular to an oil pumping unit using a concentric dual-axis drive control device. Background Art

[0002] In the field of oil production, a pumping unit is needed to pump oil from deep underground into the oil pipeline and then send it to the transfer station. The most widely used pumping unit in China is the walking beam reciprocating type, which converts the circular motion of the motor into the up and down linear motion of the sucker rod, thereby achieving the extraction of oil.

[0003] However, the traditional walking beam pumping unit has low system efficiency and usually directly converts the rotation of the motor into the up and down linear motion of the sucker rod. The motor needs to exert a large power to pull the sucker rod, resulting in high energy consumption.

[0004] Summary of the Invention

[0005] In order to solve the technical problem of high energy consumption of the above-mentioned traditional beam pumping unit, the present invention provides a pumping unit using a concentric dual-shaft drive control device.

[0006] The technical solution adopted by the present invention to solve its technical problem is:

[0007] The oil pumping unit using a concentric dual-axis drive control device includes a base arranged on the well platform, a box-type derrick is fixedly arranged on the base, a platform is fixedly arranged on the top of the box-type derrick, and also includes a lower power mechanism, the lower power mechanism includes a power motor, a reducer, a brake, an upper sprocket, a transmission chain, a lower sprocket and a counterweight; the power motor, the reducer and the brake are all fixed on the base and are all located below the box-type derrick, the brake is connected to the power motor and the reducer, a roller and an upper sprocket are rotatably arranged on the platform, the lower sprocket is fixedly connected to the output shaft of the reducer, the transmission chain is transmission-connected to the upper sprocket and the lower sprocket, and is fixedly connected to the counterweight, a transmission belt is provided on the roller, one end of the transmission belt is connected to the counterweight, and the other end is connected to the sucker rod.

[0008] Furthermore, an upper hook and a lower hook are provided on the counterweight, and the transmission chain connects the upper hook and the lower hook.

[0009] Furthermore, a first belt clamp is provided on the sucker rod, a second belt clamp is provided on the counterweight, and both ends of the transmission belt are connected to the first belt clamp and the second belt clamp respectively.

[0010] Furthermore, the power motor is a reversible motor capable of forward and reverse rotation.

[0011] Furthermore, a support rod is fixedly provided on the base, and the support rod is fixedly connected to the box-type derrick.

[0012] Furthermore, a cylinder seat is fixedly provided on the well platform, a telescopic cylinder is fixedly provided on the cylinder seat, and a free end of the telescopic cylinder is fixedly connected to the base.

[0013] Furthermore, the reducer is a dual-shaft reducer, and the number of the upper sprocket, the lower sprocket and the transmission chain are all two.

[0014] Furthermore, a ladder is fixedly provided on the box-type derrick, a guardrail is fixedly provided on the platform, a protective cover with an opening on the bottom is fixedly provided on the platform, and the roller is located inside the protective cover.

[0015] Furthermore, it also includes a safety mechanism, which includes a connecting rod, a sliding rod and two limiting arc plates. A sliding groove is provided at both ends of the ladder, and two slides are slidably arranged in the sliding groove. An extension rod is fixedly arranged on the slide. The connecting rod and the sliding rod are fixedly connected to the two extension rods. One end of the two limiting arc plates is rotatably connected to the sliding rod, and the other end is detachably connected to the connecting rod.

[0016] Furthermore, a fixing plate is fixedly provided at both ends of the connecting rod, a positioning hole is provided on the fixing plate, a telescopic hole is provided on the limiting arc plate, a telescopic spring is fixedly provided in the telescopic hole, and a positioning rod is slidably provided, the telescopic spring is fixedly connected to the positioning rod, and the positioning rod is slidably connected to the positioning hole.

[0017] Beneficial effects of the present invention:

[0018] 1. The present invention uses a counterweight, an upper sprocket, a lower sprocket, a transmission chain, a transmission belt, and a roller to balance the weight of the sucker rod and part of the oil-water mixture. This allows the power motor to use less power to drive the sucker rod to move up and down linearly, reducing energy consumption and solving the problem of high energy consumption of traditional walking beam pumping units.

[0019] 2. The present invention places the power motor, reducer and brake on the base at the lower end of the box-type derrick, which can facilitate equipment debugging and maintenance. In addition, there are fewer devices on the platform, so fewer devices need to be maintained on the platform, thereby reducing the number of times maintenance personnel have to climb onto the platform;

[0020] 3. The service life of the upper sprocket, lower sprocket and transmission chain used in the present invention is longer than that of the V-belt transmission device used in the traditional walking beam pumping unit. There is no need to frequently replace the parts of the V-belt transmission device, thus reducing maintenance costs.

[0021] 4. The present invention adopts a telescopic oil cylinder to push the base and the device thereon, thus avoiding the use of a large crane when moving the machine during well repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] FIG1 is a schematic structural diagram of an oil pumping unit using a concentric dual-shaft drive control device according to a first embodiment of the present invention;

[0023] FIG2 is a side view of FIG1;

[0024] FIG3 is a schematic diagram of the transmission structure of the counterweight in FIG1 ;

[0025] FIG4 is a schematic diagram of the transmission structure of the sucker rod in FIG2 ;

[0026] FIG5 is a schematic diagram of the structure in which the counterweight in FIG1 is guided;

[0027] FIG6 is a side sectional view of the ladder and the safety mechanism in the second embodiment of the present invention;

[0028] FIG7 is a schematic structural diagram of the safety mechanism in FIG6 ;

[0029] FIG8 is a side sectional view of the safety mechanism in FIG7;

[0030] FIG9 is a schematic structural diagram of the slide plate and the extension rod in FIG7 ;

[0031] FIG10 is a schematic structural diagram of the limiting arc plate, telescopic spring and positioning rod in FIG7;

[0032] Among them, 1- reducer, 2- lower sprocket, 3- transmission chain, 4- lower hook, 5- counterweight, 6- upper hook, 7- transmission belt, 8- rope hanger, 9- first belt clamp, 10- roller, 11- base, 12- box-type derrick, 13- guide roller, 14- upper sprocket, 15- guardrail, 16- brake, 17- coupling, 18- power motor, 19- telescopic cylinder, 20- support rod, 21- ladder, 22- platform, 23- protective cover, 24- second belt clamp, 25- cylinder seat, 26- well platform, 27- extension rod, 28- connecting rod, 29- limiting arc plate, 30- elastic layer, 31- slide plate, 32- slide groove, 33- fixed plate, 34- positioning rod, 35- telescopic spring, 36- telescopic hole. DETAILED DESCRIPTION

[0033] In order to deepen the understanding of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. The embodiments are only used to explain the present invention and do not limit the scope of protection of the present invention.

[0034] Example 1:

[0035] The specific implementation process of the present invention is as follows: the pumping unit using the concentric dual-axis drive control device, as shown in Figures 1 to 5, comprises a base 11 arranged on a well platform 26, a box-type derrick 12 is fixedly arranged on the base 11, a platform 22 is fixedly arranged on the top of the box-type derrick 12, and further comprises a lower power mechanism, the lower power mechanism comprising a power motor 18, a reducer 1, a brake 16, an upper sprocket 14, a transmission chain 3, a lower sprocket 2 and a counterweight 5; the power motor 18, the reducer 1 and the brake 16 are all fixed. The derrick 12 is fixed on the base 11 and is located below the box-type derrick 12. The brake 16 is connected to the power motor 18 and the reducer 1. The drum 10 and the upper sprocket 14 are rotatably arranged on the platform 22. The lower sprocket 2 is fixedly connected to the output shaft of the reducer 1. The transmission chain 3 is connected to the upper sprocket 14 and the lower sprocket 2, and is fixedly connected to the counterweight 5. A transmission belt 7 is provided on the drum 10. One end of the transmission belt 7 is connected to the counterweight 5, and the other end is connected to the sucker rod.

[0036] When the sucker rod is to be moved up and down, the staff starts the power motor 18, and the power motor 18 drives the lower sprocket 2 to rotate through the reducer 1, and the lower sprocket 2 drives the upper sprocket 14 to rotate through the transmission chain 3. At the same time, the transmission chain 3 will move the counterweight 5 downward, and the counterweight 5 will pull one end of the transmission belt 7 downward. The transmission belt 7 slides and connects to the roller 10, and the other end of the transmission belt 7 will move upward with the sucker rod; when the power motor 18 is reversed, the counterweight 5 will move upward, and the transmission belt 7 will make the sucker rod move downward. The forward and reverse rotation of the power motor 18 can The dynamic sucker rod moves linearly up and down. A suspension rope 8 can be provided on the sucker rod. A guide roller 13 can be fixedly provided on the counterweight 5. The guide roller 13 is connected to the box-type derrick 12 in a rolling manner. A protective cover 23 can be provided on the base 11 to protect the lower power mechanism. The brake 16 is connected to the output shaft of the power motor 18 and the input shaft of the reducer 1. The output shaft of the power motor 18 and the brake 16 can be connected through a coupling 17. The brake 16 can brake the reducer 1 when maintaining the device or in an emergency, thereby improving the safety of maintenance personnel.

[0037] As shown in FIG1 , an upper hook 6 and a lower hook 4 are provided on the counterweight 5 , and the transmission chain 3 connects the upper hook 6 and the lower hook 4 .

[0038] The upper connection 6 is provided with a nut and a screw, and the transmission chain 3 can be tightened by tightening the nut. The balance weight 5 and the transmission chain 3 can be connected through the upper connection 6 and the lower connection 4.

[0039] As shown in FIG1 and FIG4 , a first belt clamp 9 is provided on the sucker rod, a second belt clamp 24 is provided on the counterweight 5 , and both ends of the transmission belt 7 are connected to the first belt clamp 9 and the second belt clamp 24 respectively.

[0040] The transmission belt 7 and the counterweight 5 may be connected via a second belt clamp 24 , and the sucker rod and the transmission belt 7 may be connected via a first belt clamp 9 .

[0041] The power motor 18 is a reversible motor capable of forward and reverse rotation.

[0042] The reversible motor can facilitate the power motor 18 to drive the lower sprocket 2 to rotate forward and reverse, thereby driving the counterweight 5 and the sucker rod to move up and down.

[0043] As shown in FIG. 2 , a support rod 20 is fixedly provided on the base 11 , and the support rod 20 is fixedly connected to the box-type derrick 12 .

[0044] The support rods 20 can support and pull the box-type derrick 12 , thereby improving the position stability of the box-type derrick 12 .

[0045] As shown in FIG2 , a cylinder seat 25 is fixedly provided on the well platform 26 , a telescopic cylinder 19 is fixedly provided on the cylinder seat 25 , and a free end of the telescopic cylinder 19 is fixedly connected to the base 11 .

[0046] When the base 11 is to be moved, the staff starts the telescopic cylinder 19, and the free end of the telescopic cylinder 19 moves with the base 11 and the sucker rod, and moves away from the well platform 26 and the wellhead, thereby realizing the well repair and machine moving.

[0047] As shown in FIG1 and FIG2 , the reducer 1 is a dual-shaft reducer 1 , and the number of the upper sprocket 14 , the lower sprocket 2 , and the transmission chain 3 are all two.

[0048] There are two upper sprockets 14, two lower sprockets 2 and two transmission chains 3, which can pull the two ends of the counterweight 5, thereby improving the stability of the counterweight 5 when it moves up and down.

[0049] As shown in FIG2 , a ladder 21 is fixedly provided on the box-type derrick 12 , a guardrail 15 is fixedly provided on the platform 22 , a protective cover 23 with an opening at the bottom is fixedly provided on the platform 22 , and the drum 10 is located inside the protective cover 23 .

[0050] The ladder 21 can facilitate maintenance personnel to climb to the platform 22 for equipment maintenance. The guardrail 15 can protect the maintenance personnel when maintaining the equipment, thereby improving the safety of the maintenance personnel. The protective cover 23 can protect the roller 10, thereby improving the safety of the roller 10. The transmission belt 7 can be moved from the opening on the bottom of the protective cover 23.

[0051] Example 2:

[0052] The difference from Example 1 is that:

[0053] The oil pumping unit using a concentric dual-axis drive control device, as shown in Figures 6 to 9, also includes a safety mechanism, which includes a connecting rod 28, a sliding rod and two limiting arc plates 29. A sliding groove 32 is provided at both ends of the ladder 21. Two slides 31 are slidingly arranged in the sliding groove 32. An extension rod 27 is fixedly provided on the slide 31. The connecting rod 28 and the sliding rod are fixedly connected to the two extension rods 27. The two limiting arc plates 29 are rotatably connected to the sliding rod at one end and detachably connected to the connecting rod 28 at the other end.

[0054] When the maintenance worker wants to climb the ladder 21, the maintenance worker first disassembles the connection between a limiting arc plate 29 and the connecting rod 28, then enters between the two limiting arc plates 29, and reconnects the limiting arc plate 29 separated from the connecting rod 28 to the connecting rod 28, so that the maintenance worker's abdomen and back are respectively pressed against the two limiting arc plates 29, thereby forming the two limiting arc plates 29 to limit the maintenance worker. When the maintenance worker climbs the ladder 21, the two limiting arc plates 29 will move up or down with the maintenance worker with the sliding rod, the connecting rod 28 and the four extending rods 27, and the four extending rods 27 will move with the four extending rods 27. The four slides 31 move together, and the four slides 31 slide in the two slide grooves 32 respectively, so that when the maintenance personnel accidentally leave the ladder 21, they can be limited near the ladder 21 by the two limiting arc plates 29, so that the maintenance personnel have a great chance of grabbing the ladder 21 again, thereby improving the safety of the maintenance personnel. An elastic layer 30 can also be fixed on the inner side surfaces of the two limiting arc plates 29 to make the contact between the maintenance personnel and the limiting arc plates 29 become a flexible contact, thereby improving the comfort of the maintenance personnel. The slide groove 32 is a groove that is small at the top and large at the bottom. The width of the slide 31 is greater than the width of the top of the slide groove 32, preventing the slide 31 from easily falling off from the slide groove 32.

[0055] As shown in Figures 7 and 10, a fixing plate 33 is fixedly provided at both ends of the connecting rod 28, a positioning hole is opened on the fixing plate 33, and a telescopic hole 36 is opened on the limiting arc plate 29. A telescopic spring 35 is fixedly provided in the telescopic hole 36, and a positioning rod 34 is slidably provided. The telescopic spring 35 is fixedly connected to the positioning rod 34, and the positioning rod 34 is slidably connected to the positioning hole.

[0056] When the limiting arc plate 29 and the connecting rod 28 are to be separated, the maintenance personnel first push the positioning rod 34 away from the positioning hole, and then rotate the limiting arc plate 29 to move the limiting arc plate 29 away from the connecting rod 28. When the limiting arc plate 29 and the connecting rod 28 are to be connected, the maintenance personnel first press the positioning rod 34 completely into the telescopic hole 36, and the telescopic spring 35 is compressed by the positioning rod 34. Then, the limiting arc plate 29 is rotated close to the connecting rod 28. The limiting arc plate 29 will bring the positioning rod 34 close to the fixed plate 33 until the top of the positioning rod 34 abuts the fixed plate 33. The maintenance personnel can loosen the positioning rod 34 and continue to rotate the limiting arc plate 29 until the positioning rod 34 is aligned with the positioning hole. The positioning rod 34 will be pushed into the positioning hole by the telescopic spring 35, forming a connection between the limiting arc plate 29 and the connecting rod 28.

[0057] The above embodiments should not limit the present invention in any way, and any technical solutions obtained by equivalent replacement or equivalent conversion fall within the protection scope of the present invention.

Claims

1. A pumping unit using a concentric dual-axis drive control device, comprising a base arranged on a well platform, a box-type derrick fixedly arranged on the base, and a platform fixedly arranged at the top of the box-type derrick, characterized in that: It further includes a lower power mechanism, and the lower power mechanism includes a power motor, a speed reducer, a brake, an upper sprocket, a transmission chain, a lower sprocket, and a counterweight; The power motor, the speed reducer, and the brake are all fixed on the base and are all located below the box-type derrick. The brake connects the power motor and the speed reducer. A drum and an upper sprocket are rotatably arranged on the platform. The lower sprocket is fixedly connected to the output shaft of the speed reducer. The transmission chain is in transmission connection with the upper sprocket and the lower sprocket and is fixedly connected to the counterweight. A transmission belt is arranged on the drum. One end of the transmission belt is connected to the counterweight, and the other end is connected to a sucker rod.

2. The pumping unit using the concentric coaxial drive control device according to claim 1, characterized in that: The counterweight is provided with an upper hanging connection and a lower hanging connection, and the transmission chain is connected to the upper hanging connection and the lower hanging connection.

3. The pumping unit using the concentric coaxial drive control device according to claim 1, characterized in that: A first belt clip is arranged on the sucker rod, and a second belt clip is arranged on the counterweight. The two ends of the transmission belt are respectively connected to the first belt clip and the second belt clip.

4. The pumping unit using the concentric coaxial drive control device according to claim 1, characterized in that: The power motor is a reversible motor capable of rotating forward and backward.

5. The pumping unit using the concentric coaxial drive control device according to claim 1, characterized in that: A support rod is fixedly arranged on the base, and the support rod is fixedly connected to the box-type derrick.

6. The pumping unit using the concentric coaxial drive control device according to claim 1, characterized in that: An oil cylinder seat is fixedly arranged on the well platform, and a telescopic oil cylinder is fixedly arranged on the oil cylinder seat. The free end of the telescopic oil cylinder is fixedly connected to the base.

7. The pumping unit using the concentric coaxial drive control device according to claim 1, characterized in that: The speed reducer is a double-shaft speed reducer, and the number of the upper sprockets, the lower sprockets, and the transmission chains is two each.

8. The pumping unit using the concentric coaxial drive control device according to claim 1, wherein: A ladder is fixedly arranged on the box-type derrick, a guardrail is fixedly arranged on the platform, and a protective cover with an open bottom is fixedly arranged on the platform. The drum is located inside the protective cover.

9. The pumping unit using the concentric coaxial drive control device according to claim 8, characterized in that: It further includes a safety mechanism, and the safety mechanism includes a connecting rod, a sliding rod, and two limiting arc-shaped plates. Chutes are opened at both ends of the ladder. Two sliding plates are slidably arranged in the chutes. An extending rod is fixedly arranged on the sliding plate. The connecting rod and the sliding rod are both fixedly connected to the two extending rods. One end of each of the two limiting arc-shaped plates is rotatably connected to the sliding rod, and the other end is detachably connected to the connecting rod.

10. The pumping unit using the concentric coaxial drive control device according to claim 9, characterized in that: Fixing plates are fixedly arranged at both ends of the connecting rod. Positioning holes are opened in the fixing plates. Telescopic holes are opened in the limiting arc-shaped plates. A telescopic spring is fixedly arranged in the telescopic hole, and a positioning rod is slidably arranged in the telescopic hole. The telescopic spring is fixedly connected to the positioning rod, and the positioning rod is slidably connected to the positioning hole.

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