Pumping unit

Abstract

The present application relates to the technical field of pumping machinery, and discloses a tower type pumping unit, which comprises a tower, a driving mechanism, a counterweight box, a crown pulley rope, a rope hanger, a crown pulley mechanism, a first driving pulley mechanism and a second driving pulley mechanism, the front part of the tower is provided with the first driving pulley mechanism, the first driving pulley mechanism comprises a driving pulley, a driven pulley and a connecting rope, and a supporting seat is hingedly installed at the lower end of the tower, the driving mechanism is arranged in the supporting seat, the staff can conveniently operate, maintain and repair the tower type pumping unit, the two ends of the connecting rope are fixedly connected with the two ends of a front tensioning mechanism, the problem that the connecting rope cannot work due to slackening when the load of the polished rod is small in the downstroke can be effectively solved, the second crown pulley is moved to the upper left, the upper end of the tower is tilted to the left, the two-stage displacement can be realized, specifically, a displacement space of 1 m can be obtained when the two-stage displacement is performed, and the tower type pumping unit has the characteristics of safety, labor saving, simplicity, convenience and high efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of oil pumping machinery, and is a tower type oil pumping machine. BACKGROUND

[0002] The tower type oil pumping machines currently in use are mainly divided into mechanical reversing, electric control reversing and fluid reversing. The mechanical reversing tower type oil pumping machine is relatively mature and is applied more frequently, but the reversing impact is large at a high stroke frequency, and it is only suitable for low stroke frequency working conditions. The fluid reversing tower type oil pumping machine has problems of short service life of pneumatic hydraulic elements and easy failure of sealing elements, and is in the research stage. The electric control reversing tower type oil pumping machine shows greater innovation vitality due to being easier to realize intelligent control and lower manufacturing cost, and various new models and structures emerge in an endless stream.

[0003] In years of experimental application, especially in heavy oil production working conditions, the electric control tower type oil pumping machines of various types have the following shortcomings: 1. the connecting rope is slack and cannot work when the stroke rod load is very small or even zero; 2. the stand-by distance is generally small, which is not convenient for continuous oil pipe operation and pressure operation; 3. most of the driving parts of the oil pumping machine are located at the top of the tower, and there are safety hazards in climbing the tower for operation, maintenance and maintenance. SUMMARY

[0004] The present application provides a tower type oil pumping machine, which overcomes the shortcomings of the prior art and effectively solves the problem that the connecting rope is slack and cannot work when the stroke rod load is small.

[0005] The technical scheme of the present application is realized by the following measures: a tower type oil pumping machine, comprising a tower, a driving mechanism, a counterweight box, a crown block rope, a rope hanger, a crown block mechanism, a first driving wheel mechanism and a second driving wheel mechanism, the front part of the tower is provided with the first driving wheel mechanism, the first driving wheel mechanism comprises a driving wheel, a driven wheel and a connecting rope, a support seat is hingedly installed at the lower end of the tower, the inner side of the support seat is provided with the driving mechanism, a driving wheel is fixedly installed on the inner side of the support seat corresponding to the right side of the driving mechanism, the output end of the driving mechanism is in transmission connection with the driving wheel, a driven wheel is arranged on the upper part of the tower corresponding to the position above the driving wheel, the counterweight box is arranged between the driving wheel and the driven wheel, a front tensioning mechanism capable of maintaining the tension of the connecting rope is fixedly installed at the front end of the counterweight box, one end of the connecting rope is fixedly connected with the upper end of the front tensioning mechanism, the other end of the connecting rope sequentially passes through the driven wheel, the driving wheel and is fixedly connected with the lower end of the front tensioning mechanism, the rear part of the tower is provided with the second driving wheel mechanism, the second driving wheel mechanism is the same in structure as the first driving wheel mechanism and is symmetrically distributed in front of and behind the first driving wheel mechanism, the upper central part of the tower is provided with the crown block mechanism, the left end of the crown block rope is fixedly connected with the upper central part of the counterweight box, the right end of the crown block rope passes through the crown block mechanism and is located at the right side of the tower, the rope hanger is fixedly installed at the right end of the crown block rope, the rear end of the counterweight box is fixedly installed with a rear tensioning mechanism, and the rear tensioning mechanism is the same in structure as the front tensioning mechanism and is symmetrically distributed in front of and behind the front tensioning mechanism.

[0006] The following are further optimizations and / or improvements to the above-mentioned technical solution:

[0007] The aforementioned front tensioning mechanism may include a C-shaped limiting seat, an upper tensioning assembly, and a lower tensioning assembly. The upper tensioning assembly includes a connector, a connecting rod, a tension spring, and a limiting block. A limiting block is provided on the upper side inside the limiting seat. The upper end of the limiting block is connected to the lower end of the tension spring. The upper end of the tension spring is connected to the lower end of the connecting rod. The upper end of the connecting rod passes through the upper wall of the limiting seat and is fixedly connected to the connector. A lower tensioning assembly is provided below the upper tensioning assembly. The lower tensioning assembly has the same structure as the upper tensioning assembly and is symmetrically distributed vertically.

[0008] The aforementioned sheave mechanism may include a first sheave, a second sheave, a sheave arm, a clearance rope, and a clearance rope pulley. The first sheave is rotatably mounted on the upper part of the tower. The sheave arm is rotatably connected to the center of the front part of the first sheave. The second sheave is rotatably mounted on the right end of the sheave arm. A clearance rope pulley is fixedly mounted on the upper left side of the tower. The right end of the clearance rope is fixedly mounted on the right side of the sheave arm. The left end of the clearance rope passes through the clearance rope pulley and is located on the left side of the tower.

[0009] The upper left side of the aforementioned support base can be equipped with multiple first hinge seats at intervals, each with a through hole in the center. The lower left side of the tower has multiple second hinge seats at intervals, each with a through hole in the center. A first pin is inserted between each corresponding first and second through hole. The upper right side of the support base has multiple third hinge seats at intervals, each with a through hole in the center. The lower right side of the tower has multiple fourth hinge seats at intervals, each with a through hole in the center. A second pin is inserted between each corresponding third and fourth through hole. A telescopic top rod is provided inside the support base on the left side. The lower end of the telescopic top rod is hinged to the lower part of the support base, and the upper end of the telescopic top rod is hinged to the lower part of the tower.

[0010] The aforementioned drive mechanism may include a geared motor and a transmission belt, with the output shaft of the geared motor connected to the drive wheel via the transmission belt.

[0011] This invention features a reasonable and compact structure, making it easy to use. Its drive mechanism is located within the support base, facilitating operation, maintenance, and upkeep by staff. Simultaneously, the two ends of the connecting rope are fixedly connected to the two ends of the front tensioning mechanism, effectively solving the problem of the connecting rope becoming slack and unable to work when the load on the bare rod is small during the downstroke. Furthermore, moving the second wheel to the upper left and tilting the upper end of the tower to the left achieves a two-stage clearance. Specifically, this two-stage clearance provides a clearance space of approximately 1 meter, offering the advantages of safety, labor-saving, simplicity, and high efficiency. Attached Figure Description

[0012] AppendixFigure 1 This is a schematic diagram of the main structure of Embodiment 1.

[0013] Appendix Figure 2 This is a schematic diagram of the left-side structure of Example 1.

[0014] The codes in the attached diagram are as follows: 1 for tower, 2 for counterweight box, 3 for suspension rope device, 4 for drive wheel, 5 for driven wheel, 6 for connecting rope, 7 for telescopic top rod, 8 for support seat, 9 for sheave rope, 10 for limit seat, 11 for connector, 12 for connecting rod, 13 for tension spring, 14 for limit block, 15 for first sheave, 16 for second sheave, 17 for sheave arm, 18 for clearance rope, 19 for clearance rope pulley, 20 for first hinge seat, 21 for second hinge seat, 22 for third hinge seat, 23 for fourth hinge seat, 24 for first pin, 25 for second pin, 26 for geared motor, and 27 for transmission belt. Detailed Implementation

[0015] The present invention is not limited to the following embodiments, and specific implementation methods can be determined according to the technical solutions and actual conditions of the present invention.

[0016] In this invention, for ease of description, the description of the relative positions of the components is based on the appendix to the specification. Figure 1 The layout is described using a diagrammatic method, such as front, back, top, bottom, left, right, etc. The positional relationships are determined based on the layout direction of the attached diagram in the instruction manual.

[0017] The present invention will be further described below with reference to embodiments and accompanying drawings:

[0018] Example 1, as shown in the appendix Figure 1 , 2As shown, the tower-type pumping unit includes a tower 1, a drive mechanism, a counterweight box 2, a sheave rope 9, a suspension rope 3, a sheave mechanism, a first driven wheel mechanism, and a second driven wheel mechanism. The first driven wheel mechanism is located at the front of the tower and includes a drive wheel 4, a driven wheel 5, and a connecting rope 6. A support base 8 is hinged to the lower end of the tower 1. The drive mechanism is located inside the support base 8. A drive wheel 4 is fixedly installed inside the support base 8 corresponding to the right side of the drive mechanism. The output end of the drive mechanism is connected to the drive wheel 4. A driven wheel 5 is located on the upper part of the tower 1 above the drive wheel 4. A counterweight box 2 is located between the drive wheel 4 and the driven wheel 5. A component is fixedly installed at the front end of the counterweight box 2 to maintain its connection with the drive wheel 4. The connecting rope 6 has a front tensioning mechanism. One end of the connecting rope 6 is fixedly connected to the upper end of the front tensioning mechanism. The other end of the connecting rope 6 passes through the driven wheel 5 and the driving wheel 4 in sequence and is fixedly connected to the lower end of the front tensioning mechanism. A second driving wheel mechanism is provided at the rear of the tower. The second driving wheel mechanism has the same structure as the first driving wheel mechanism and is symmetrically distributed front and back. A sheave mechanism is provided at the center of the upper end of the tower 1. The left end of the sheave rope 9 is fixedly connected to the center of the upper end of the counterweight box 2. The right end of the sheave rope 9 passes through the sheave mechanism and is located on the right side of the tower 1. A suspension rope device 3 is fixedly installed at the right end of the sheave rope 9. A rear tensioning mechanism is fixedly installed at the rear end of the counterweight box 2. The rear tensioning mechanism has the same structure as the front tensioning mechanism and is symmetrically distributed front and back.

[0019] In use, the drive mechanism drives the drive wheel 4, and with the cooperation of the driven wheel 5 and the connecting rope 6, it drives the counterweight box 2 to move up and down between the drive wheel 4 and the driven wheel 5. By fixing the left end of the sheave rope 9 to the center of the upper end of the counterweight box 2, the suspension rope 3 is lowered when the counterweight box 2 moves upward and raised when the counterweight box 2 moves downward. The drive mechanism is set inside the support base 8, which is convenient for operators to operate, maintain and repair. At the same time, the two ends of the connecting rope 6 are fixedly connected to the two ends of the front tensioning mechanism, which can effectively solve the problem of the connecting rope becoming loose and unable to work when the load on the bare rod is small during the downward stroke.

[0020] The above-mentioned tower-type pumping unit can be further optimized and / or improved according to actual needs:

[0021] Example 2, as shown in the appendix Figure 1 , 2As shown, this embodiment is a further optimization of the above embodiment. The front tensioning mechanism includes a C-shaped limiting seat 10, an upper tensioning component, and a lower tensioning component. The upper tensioning component includes a connector 11, a connecting rod 12, a tension spring 13, and a limiting block 14. The limiting block 14 is provided on the upper side inside the limiting seat 10. The upper end of the limiting block 14 is connected to the lower end of the tension spring 13. The upper end of the tension spring 13 is connected to the lower end of the connecting rod 12. The upper end of the connecting rod 12 passes through the upper wall of the limiting seat 10 and is fixedly connected to the connector 11. The lower tensioning component is provided below the upper tensioning component. The lower tensioning component has the same structure as the upper tensioning component and is symmetrically distributed vertically. In use, the connector 11 is connected to the connecting rope 6, which drives the tension spring 13 to always be in a compressed state, which can effectively limit the swaying of the balance box caused by wind load. When the load on the bare rod is small during the lower stroke, the connecting rope 6 is subjected to the elastic force of the tension spring 13, so that the connecting rope is always kept taut, which can effectively prevent the connecting rope from slack.

[0022] Example 3, as shown in the appendix Figure 1 , 2 As shown, this embodiment is a further optimization of the above embodiment. The sheave mechanism includes a first sheave 15, a second sheave 16, a sheave arm 17, a clearance rope 18, and a clearance rope pulley 19. The first sheave 15 is rotatably mounted on the upper part of the tower 1. The sheave arm 17 is rotatably connected to the center of the front part of the first sheave 15. The second sheave 16 is rotatably mounted on the right end of the sheave arm 17. The clearance rope pulley 19 is fixedly mounted on the upper left side of the tower 1. The right end of the clearance rope 18 is fixedly mounted on the right side of the sheave arm 17. The left end of the clearance rope 18 passes through the clearance rope pulley 19 and is located on the left side of the tower. When it is necessary to make way, pull the left end of the yield rope 18. The height of the yield rope pulley 19 is higher than that of the first wheel 15, so that the right end of the yield rope 18 pulls the sheave arm 17 to the upper left. The left end of the sheave arm 17 is rotated and installed in the center of the first wheel 15. Therefore, the sheave arm 17 will drive the second wheel 16 on the right end to move to the upper left, so as to make way and facilitate pipeline operation or pressurized operation.

[0023] Example 4, as shown in the appendix Figure 1 , 2As shown, this embodiment is a further optimization of the above embodiment. Multiple first hinge seats 20 are installed at intervals along the front and back of the upper left side of the support base 8. Each first hinge seat 20 has a first through hole in its center. Multiple second hinge seats 21 are installed at intervals along the front and back of the lower left side of the tower 1. Each second hinge seat 21 has a second through hole in its center. A first pin 24 passes between each corresponding first through hole and second through hole. Multiple third hinge seats 22 are installed at intervals along the front and back of the upper right side of the support base 8. Each third hinge seat 22 has a third through hole in its center. Multiple fourth hinge seats 23 are installed at intervals along the front and back of the lower right side of the tower 1. Each fourth hinge seat 23 has a fourth through hole in its center. A second pin 25 passes between each corresponding third through hole and fourth through hole. A telescopic top rod 7 is provided on the left side inside the support base 8. The lower end of the telescopic top rod 7 is hinged to the lower part of the support base 8, and the upper end of the telescopic top rod 7 is hinged to the lower end of the tower 1. When it is necessary to make way, remove the first pin 24. At this time, the left end of the tower 1 is supported by the telescopic top rod 7. By adjusting the length of the telescopic top rod 7, the upper end of the tower 1 can be tilted to the left to make way. If necessary, the second wheel 16 can be moved to the upper left and the upper end of the tower 1 can be tilted to the left at the same time to achieve secondary making way. Specifically, a making way space of 2-4 meters can be obtained when making secondary making way.

[0024] Example 5, as shown in the appendix Figure 1 , 2 As shown, this embodiment is a further optimization of the above embodiment. The drive mechanism includes a geared motor 26 and a transmission belt 27. The output shaft of the geared motor 26 is connected to the drive wheel 4 through the transmission belt 27.

[0025] The above technical features constitute the preferred embodiment of the present invention, which has strong adaptability and optimal implementation effect. Unnecessary technical features can be added or removed according to actual needs to meet the requirements of different situations.

Claims

1. A tower-type oil pumping unit, characterized in that... The system includes a tower, a drive mechanism, a counterweight box, a sheave rope, a suspension device, a sheave mechanism, a first driven wheel mechanism, and a second driven wheel mechanism. The first driven wheel mechanism is located at the front of the tower and includes a drive wheel, a driven wheel, and a connecting rope. A support base is hinged to the lower end of the tower, and a drive mechanism is located inside the support base. A drive wheel is fixedly installed inside the support base to the right of the drive mechanism, and the output end of the drive mechanism is connected to the drive wheel. A driven wheel is located on the upper part of the tower above the drive wheel. A counterweight box is located between the drive wheel and the driven wheel. A pre-tensioning mechanism that maintains the tension of the connecting rope connected to the counterweight box is fixedly installed at the front end of the counterweight box. One end of the rope is fixedly connected to the upper end of the front tensioning mechanism. The other end of the rope passes sequentially through the driven wheel and the drive wheel before being fixedly connected to the lower end of the front tensioning mechanism. A second driving wheel mechanism is provided at the rear of the tower. The second driving wheel mechanism has the same structure as the first driving wheel mechanism and is symmetrically distributed front and back. A sheave mechanism is provided at the center of the upper end of the tower. The left end of the sheave rope is fixedly connected to the center of the upper end of the counterweight box. The right end of the sheave rope passes through the sheave mechanism and is located on the right side of the tower. A suspension device is fixedly installed at the right end of the sheave rope. A rear tensioning mechanism is fixedly installed at the rear end of the counterweight box. The rear tensioning mechanism has the same structure as the front tensioning mechanism and is symmetrically distributed front and back. The front tensioning mechanism includes a C-shaped limit seat. The upper tensioning assembly consists of an upper tensioning component and a lower tensioning component. The upper tensioning component includes a connector, a connecting rod, a tension spring, and a limiting block. A limiting block is located on the upper side inside the limiting seat. The upper end of the limiting block connects to the lower end of the tension spring, and the upper end of the tension spring connects to the lower end of the connecting rod. The upper end of the connecting rod passes through the upper wall of the limiting seat and is fixedly connected to the connector. Below the upper tensioning component is a lower tensioning component. The lower tensioning component has the same structure as the upper tensioning component and is symmetrically distributed vertically. Multiple first hinge seats are installed at intervals on the upper left side of the support base. Each first hinge seat has a through hole in its center. Multiple second hinge seats are installed at intervals on the lower left side of the tower. The second hinge seat has a second through hole in the center, and a first pin is inserted between each corresponding first through hole and second through hole. Multiple third hinge seats are installed at intervals on the upper right side of the support seat. Each third hinge seat has a third through hole in the center. Multiple fourth hinge seats are installed at intervals on the lower right side of the tower. Each fourth hinge seat has a fourth through hole in the center, and a second pin is inserted between each corresponding third through hole and fourth through hole. A telescopic top rod is provided on the left side inside the support seat. The lower end of the telescopic top rod is hinged to the lower part of the support seat, and the upper end of the telescopic top rod is hinged to the lower end of the tower.

2. The tower-type pumping unit according to claim 1, characterized in that... The sheave mechanism includes a first sheave, a second sheave, a sheave arm, a clearance rope, and a clearance rope pulley. The first sheave is rotatably mounted on the upper part of the tower. The sheave arm is rotatably connected to the center of the front part of the first sheave. The second sheave is rotatably mounted on the right end of the sheave arm. A clearance rope pulley is fixedly mounted on the upper left side of the tower. The right end of the clearance rope is fixedly mounted on the right side of the sheave arm. The left end of the clearance rope passes through the clearance rope pulley and is located on the left side of the tower.

3. The tower-type pumping unit according to claim 1 or 2, characterized in that... The drive mechanism includes a geared motor and a transmission belt. The output shaft of the geared motor is connected to the drive wheel via the transmission belt.

Images