CN219412554U

CN219412554U - Crank connecting rod flexible transmission pumping unit

Info

Publication number: CN219412554U
Application number: CN202320671368.5U
Authority: CN
Inventors: 刘喜才; 王文浩; 王依明; 李自广; 徐校平; 刘兵
Original assignee: Puyang Yuanheng Litong Petroleum Machinery Co ltd
Current assignee: Puyang Yuanheng Litong Petroleum Machinery Co ltd
Priority date: 2023-03-30
Filing date: 2023-03-30
Publication date: 2023-07-25
Anticipated expiration: 2033-03-30

Abstract

The utility model relates to the technical field of oil extraction, in particular to a crank connecting rod flexible transmission oil pumping unit. Including the base, the base upper end is fixed with power device, be fixed with the crank on power device's the output shaft, be fixed with the balanced heavy on the crank, be fixed with the extension board on the crank, the extension board rotates with the connecting piece to be connected, be provided with length adjustment device on the connecting piece, rotate on the base and be connected with the support, the support upper end rotates and is connected with the cylinder, fixedly connected with flexible connection area on the length adjustment device, flexible connection area is around the cylinder after with polished rod ware fixed connection, support upper portion rotates with adjusting lever upper end to be connected, adjust the pole lower extreme and rotate and be connected with the slide, slide and slide rail slip joint, the slide rail is fixed on the base, be fixed with the telescopic cylinder on the base, telescopic link and the slide fixed connection of telescopic cylinder. The utility model realizes long-stroke operation, stable and uniform acceleration operation and is more practical.

Description

Crank connecting rod flexible transmission pumping unit

Technical Field

The utility model relates to the technical field of oil extraction, in particular to a crank connecting rod flexible transmission oil pumping unit.

Background

The pumping unit is a kind of machine equipment for exploiting petroleum, and is the most main lifting equipment in a sucker rod pumping system. The existing pumping units used for oil extraction in oil fields are various in types and can be divided into beam pumping units and beam-free pumping units.

In the prior art, a beam pumping unit converts rotary motion of a crank into reciprocating linear motion of a pumping rod of an oil well through a connecting rod and a beam. The traditional beam-free pumping unit has a chain wheel reversing mode and a motor reversing mode, the rated running speed is reached in a short time after the pumping unit is reversed, the reversing acceleration is high, and a large dynamic load is formed when a wellhead rod column is lifted.

The beam pumping unit in the prior art has unbalanced torque and tensile force born by each transmission part of the pumping unit in the reciprocating process, high rotating speed, high acceleration, increased dynamic load of the pumping unit, negative torque, bending of a pole column, influence on the service life of the pole column and an oil pipe in a wellhead, high installation workload, large volume, large weight, high installation power and low cost performance for long-stroke and large-load models.

The existing beam-free pumping unit has the disadvantages of large reversing impact, inconvenient adjustment of the stroke of the chain wheel reversing pumping unit, poor adaptability, large reversing starting current of the motor reversing pumping unit, short service life of the motor, complex control system and low efficiency. Meanwhile, the beam-free pumping unit needs to enable the whole tower section to incline when in well repair and abdication, and the risk coefficient of the whole tower section in the whole inclination process is high. The utility model discloses a tower type pumping unit disclosed in patent document with the application number of CN202221154043.1 and the name of 'tower type pumping unit', which belongs to a beam-free pumping unit, when a well needs to be repaired, a connecting block is close to a fixed block through a chain block, then a brake device is started, a roller and a driving belt are positioned and stabilized by the brake device, then a jack is utilized to tightly prop against the right side of the lower end of a frame body, a bolt for connecting a support and a base is disassembled, a cushion block is taken out, the right side of the lower end of the frame body is tightly propped by the jack, the upper end of the frame body can rotate leftwards around a hinged seat, and well repairing operation can be performed after the upper end of the frame body is staggered with a wellhead device. The risk coefficient is high in the whole tilting process of the tower.

Disclosure of Invention

The technical problem to be solved by the utility model is that the crank connecting rod flexible transmission pumping unit can be used for conveniently performing well repair operation, reducing the installation workload and having small whole volume.

In order to achieve the above purpose, the technical scheme provided by the utility model is as follows:

the crank connecting rod flexible transmission pumping unit comprises a base, a power device is fixed at the upper end of the base, a crank is fixed on an output shaft of the power device, a counterweight is fixed on the crank, a support plate is fixed on the crank, the support plate is rotationally connected with a connecting piece, a length adjusting device is arranged on the connecting piece, a support is rotationally connected on the base, a roller is rotationally connected at the upper end of the support, a flexible connecting belt is fixedly connected on the length adjusting device, the flexible connecting belt bypasses the roller and is fixedly connected with a rope hanger, the upper part of the support is rotationally connected with the upper end of an adjusting rod, the lower end of the adjusting rod is rotationally connected with a sliding seat, the sliding seat is in sliding clamping connection with a sliding rail, a telescopic cylinder is fixed on the base, and a telescopic rod of the telescopic cylinder is fixedly connected with the sliding seat.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, the flexible connecting belt drives the sucker rod to reciprocate up and down through the rope hanger, so that the technical problems of large dynamic load, negative torque, long service life of a rod column in a wellhead, unadjustable stroke, poor adaptability, complex control system and low efficiency of the beam pumping unit in the prior art are solved, the long-stroke operation, stable and uniform acceleration operation is realized, and the beam pumping unit is more practical.

2. The utility model avoids using walking beams and heavy frames, reduces a large amount of steel consumption, has simple integral structure, ensures that the integral size of the underframe is small, has small weight of the integral system equipment of the pumping unit, small energy consumption and high cost performance, and has convenient and efficient oil extraction equipment.

3. The telescopic cylinder can change the inclination angle of the bracket through the sliding seat and the adjusting rod, so that the position of the roller in the transverse direction is changed, the roller and the wellhead are convenient to interleave, and well repairing operation and wellhead centering operation are convenient to conduct.

4. Through setting up length adjustment device, conveniently adjust the rate of tension of flexible connecting band.

Drawings

Fig. 1 is a front view of the present utility model.

Fig. 2 is a top view of the motor, reducer, crank, connector and length adjustment device connection.

The names of the parts in the drawings are as follows:

1. base seat

2. Motor with a motor housing

3. Braking device

4. Speed reducer

5. Crank arm

6. Balance weight

7. Connecting rod

8. Adjusting rod

9. Flexible connecting band

10. Roller

11. Screw rod

12. Nut

13. Support frame

14. Slide seat

15. Sliding rail

16. Telescopic cylinder

17. Connector with a plurality of connectors

18. Supporting plate

19. A rope hanger.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Referring to fig. 1-2, the crank connecting rod flexible transmission pumping unit comprises a base 1, wherein a power device is fixed at the upper end of the base 1, and a crank 5 is fixed on an output shaft of the power device.

The power device comprises a motor 2 and a speed reducer 4 which are fixed on a base 1, and an output shaft of the motor 2 is connected with an input shaft of the speed reducer 4 through a belt. The speed reducer 4 is a double-output-shaft speed reducer, and the number of the cranks 5 is two and is fixedly connected with two output shafts of the speed reducer 4 respectively.

A braking device 3 for braking an input shaft of the speed reducer 4 is fixed on the base 1.

A counterweight 6 is fixed on the crank 5.

The crank 5 is fixedly provided with a support plate 18, and the support plate 18 is rotationally connected with the connecting piece. The connecting piece comprises a connecting rod 7 which is rotatably connected with a support plate 18. The stroke of the pumping unit can be adjusted by changing the position of the rotary connecting point of the connecting piece and the support plate 18 on the support plate 18.

The connecting piece is provided with a length adjusting device.

The base 1 is rotatably connected with a bracket 13, the upper end of the bracket 13 is rotatably connected with a roller 10, the length adjusting device is fixedly connected with a flexible connecting belt 9, and the flexible connecting belt 9 is fixedly connected with a rope hanger 19 after bypassing the roller 10.

The length adjusting device comprises a screw 11, the screw 11 is in threaded connection with the free end of the connecting rod 7, the screw 11 is in rotary connection with the connector 17, and the flexible connecting belt 9 is fixedly connected with the connector 17. The screw 11 is arranged concentrically with the connecting rod 7, and a nut 12 is connected to the screw 11 in a threaded manner. The nut 12 can lock the screw 11.

The upper portion of the support 13 is rotatably connected with the upper end of the adjusting rod 8, the lower end of the adjusting rod 8 is rotatably connected with the sliding seat 14, the sliding seat 14 is in sliding clamping connection with the sliding rail 15, the sliding rail 15 is fixed on the base 1, the telescopic cylinder 16 is fixed on the base 1, and the telescopic rod of the telescopic cylinder 16 is fixedly connected with the sliding seat 14.

When the oil extraction device works, the motor 2 is started, the motor 2 drives the crank 5 and the balance weight 6 to rotate through the speed reducer 4, and the support plate 18 drives the sucker rod to reciprocate up and down through the connecting piece, the length adjusting device and the roller 10 in the process of rotating the crank 5 to perform oil extraction work.

The distance between the connector 17 and the connecting rod 7 can be adjusted by rotating the screw 11, the tightness of the flexible connecting belt 9 is conveniently adjusted, and after the tightness of the flexible connecting belt 9 is adjusted, the nut 12 is rotated, so that the connecting rod 7 of the nut 12 is connected, and the screw 11 is further locked.

When the well is required to be repaired, the telescopic cylinder 16 is started, the telescopic rod of the telescopic cylinder 16 drives the sliding seat 14 to move in the direction away from the support 13, the upper end of the support 13 swings through the adjusting rod 8 in the sliding process of the sliding seat 14 in the direction away from the support 13, the roller 10 is further staggered with a wellhead, and then well repair operation is convenient to conduct.

The flexible connecting belt 9 drives the sucker rod to reciprocate up and down through the rope hanger 19, so that the problems of large dynamic load, negative torque, long service life of a pole in a wellhead, unadjustable stroke, poor adaptability, complex control system and low efficiency of the beam pumping unit in the prior art are solved, long-stroke operation, stable and uniform acceleration operation are realized, and the beam pumping unit is more practical.

The utility model avoids using walking beams and heavy frames, reduces a large amount of steel consumption, has simple integral structure, ensures that the integral size of the underframe is small, has small weight of the integral system equipment of the pumping unit, small energy consumption and high cost performance, and has convenient and efficient oil extraction equipment.

In the description of the present utility model, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "another end," "upper," "one side," "top," "inner," "front," "center," "two ends," etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

1. The crank connecting rod flexible transmission pumping unit comprises a base (1), a power device is fixed at the upper end of the base (1), a crank (5) is fixed on an output shaft of the power device, a balance weight (6) is fixed on the crank (5), and the crank connecting rod flexible transmission pumping unit is characterized in that a support plate (18) is fixed on the crank (5), the support plate (18) is rotationally connected with a connecting piece, a length adjusting device is arranged on the connecting piece, a support (13) is rotationally connected on the base (1), a roller (10) is rotationally connected at the upper end of the support (13), a flexible connecting belt (9) is fixedly connected with a rope hanger (19) after bypassing the roller (10), the upper end of the support (13) is rotationally connected with an adjusting rod (8), a sliding seat (14) is rotationally connected at the lower end of the adjusting rod (8), the sliding seat (14) is in sliding clamping connection with a sliding rail (15), a telescopic cylinder (16) is fixed on the base (1), and the telescopic rod of the telescopic cylinder (16) is fixedly connected with the sliding seat (14).

2. The crank-connecting rod flexible transmission pumping unit according to claim 1, wherein the power device comprises a motor (2) and a speed reducer (4) which are fixed on the base (1), and an output shaft of the motor (2) is connected with an input shaft of the speed reducer (4) through a belt.

3. The crank-connecting rod flexible transmission pumping unit according to claim 2, wherein the speed reducer (4) is a double-output-shaft speed reducer, and the number of the cranks (5) is two and is fixedly connected with two output shafts of the speed reducer (4) respectively.

4. Crank-link flexible drive pumping unit according to claim 1, characterized in that the connection comprises a link (7) in rotational connection with a support plate (18).

5. The crank-link flexible drive pumping unit according to claim 4, wherein the length adjusting device comprises a screw (11), the screw (11) is in threaded connection with the free end of the link (7), the screw (11) is in rotational connection with the connector (17), and the flexible connecting belt (9) is fixedly connected with the connector (17).

6. The crank-connecting rod flexible transmission pumping unit according to claim 5, wherein the screw (11) is arranged concentrically with the connecting rod (7), and a nut (12) is screwed on the screw (11).

7. The crank-link flexible drive pumping unit according to claim 1, characterized in that a brake device (3) for braking the input shaft of the reducer (4) is fixed on the base (1).