Tower type pumping unit

Abstract

The invention relates to the technical field of oil pumping machinery, in particular to a tower type oil pumping unit which comprises a tower, a driving mechanism, a weight box, a head sheave rope, a beam hanger, a head sheave mechanism, a first driving wheel mechanism and a second driving wheel mechanism, the first driving wheel mechanism is arranged on the front portion of the tower and comprises a driving wheel, a driven wheel and a connecting rope, and a supporting seat is hinged to the lower end of the tower. The device is reasonable and compact in structure and convenient to use, and the driving mechanism is arranged in the supporting seat, so that a worker can operate and maintain the device conveniently; meanwhile, the two ends of the connecting rope are fixedly connected with the two ends of the front tensioning mechanism, the problem that when the load of a down-stroke polish rod is small, the connecting rope is loosened and cannot work can be effectively solved, meanwhile, the second head sheave is moved to the upper left portion, the upper end of the tower is inclined leftwards, second-level receding can be achieved, and specifically, the receding space of one meter can be obtained during second-level receding; the device has the characteristics of safety, labor saving, simplicity, convenience and high efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of oil pumping machinery and is a tower type oil pumping unit. Background Art

[0002] The tower pumps currently in use are mainly divided into three types: mechanical reversing, electronically controlled reversing and fluid reversing. Mechanically reversing tower pumps are relatively mature and widely used, but the reversing impact is large under higher stroke frequencies, and are only suitable for low stroke frequency conditions; fluid reversing tower pumps have problems such as short life of pneumatic and hydraulic components and easy failure of seals, and are still in the research stage; electronically controlled reversing tower pumps are easier to realize intelligent control and have lower manufacturing costs, showing greater innovation vitality, and various new models and new structures are emerging in an endless stream.

[0003] During the years of test applications, especially in heavy oil production conditions, various types of electric-controlled tower pumping units have shown the following shortcomings: 1. When the bare rod load in the downstroke is very small or even zero, the connecting rope becomes loose and twisted together and cannot work; 2. The clearance distance is generally small, which is inconvenient for continuous tubing operations and pressure operations; 3. Most of the driving parts of the pumping units are at the top of the tower, and operation, maintenance and servicing require climbing the tower, which poses a safety hazard. Summary of the invention

[0004] The present invention provides a tower type oil pumping unit, which overcomes the above-mentioned shortcomings of the prior art and can effectively solve the problem that the existing tower type oil pumping unit cannot work due to the loose connection rope when the stroke rod load is small.

[0005] The technical solution of the present invention is achieved through the following measures: a tower-type oil pumping unit, including a tower, a driving mechanism, a counterweight box, a sheave rope, a rope hanger, a sheave mechanism, a first moving wheel mechanism and a second moving wheel mechanism, a first moving wheel mechanism is provided at the front of the tower, the first moving wheel mechanism includes a driving wheel, a driven wheel and a connecting rope, a support seat is hingedly installed at the lower end of the tower, a driving mechanism is provided inside the support seat, a driving wheel is fixedly installed in the support seat corresponding to the right position of the driving mechanism, an output end of the driving mechanism is connected to the driving wheel by transmission, a driven wheel is provided at the upper part of the tower corresponding to the position above the driving wheel, a counterweight box is provided between the driving wheel and the driven wheel, and a weight capable of being fixedly installed at the front end of the counterweight box A front tensioning mechanism that maintains the tension of a connecting rope connected to it, one end of the connecting rope is fixedly connected to the upper end of the front tensioning mechanism, the other end of the connecting rope passes through the driven wheel and the driving wheel in sequence and is fixedly connected to the lower end of the front tensioning mechanism, a second moving wheel mechanism is provided at the rear of the tower, the second moving wheel mechanism has the same structure as the first moving wheel mechanism and is symmetrically distributed front to back, a sky wheel mechanism is provided at the center of the upper end of the tower, the left end of the sky wheel rope is fixedly connected to the center of the upper end of the counterweight box, the right end of the sky wheel rope passes through the sky wheel mechanism and is located on the right side of the tower, a rope hanger is fixedly installed on the right end of the sky wheel rope, and a rear tensioning mechanism is fixedly installed on 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 to back.

[0006] The following are further optimizations and / or improvements to the above technical solutions: The above-mentioned front tensioning mechanism may include a C-shaped limit seat, an upper tensioning assembly and a lower tensioning assembly. The upper tensioning assembly includes a connecting head, a connecting rod, a tensioning spring, and a limit block. A limit block is provided on the upper side of the limit seat. The upper end of the limit block is connected to the lower end of the tensioning spring. The upper end of the tensioning 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 limit seat and is fixedly connected to the connecting head. 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 up and down.

[0007] The above-mentioned sheave mechanism may include a first sheave, a second sheave, a sheave arm, a yield rope and a yield rope pulley. The first sheave is rotatably installed on the upper part of the tower, the front center of the first sheave is rotatably connected to the sheave arm, the second sheave is rotatably installed on the right end of the sheave arm, and a yield rope pulley is fixedly installed on the upper left end of the tower, the right end of the yield rope is fixedly installed on the right part of the sheave arm, and the left end of the yield rope passes through the yield rope pulley and is located on the left side of the tower.

[0008] A plurality of first hinge seats can be installed at the upper end of the left portion of the above-mentioned support seat at front and rear intervals, and a first through hole that passes through the front and rear is opened in the center of each first hinge seat; a plurality of second hinge seats are installed at the lower end of the left portion of the tower at front and rear intervals, and a second through hole that passes through the front and rear is opened in the center of each second hinge seat, and a first pin shaft is penetrated between each corresponding first through hole and second through hole; a plurality of third hinge seats are installed at the upper end of the right portion of the support seat at front and rear intervals, and a third through hole that passes through the front and rear is opened in the center of each third hinge seat; a plurality of fourth hinge seats are installed at the lower end of the right portion of the tower at front and rear intervals, and a fourth through hole that passes through the front and rear is opened in the center of each fourth hinge seat, and a second pin shaft is penetrated between each corresponding third through hole and fourth through hole; a telescopic top rod is provided on the left side of the interior of the support seat, and the lower end of the telescopic top rod is hingedly installed on the lower part of the support seat, and the upper end of the telescopic top rod is hingedly installed on the lower end of the tower.

[0009] The driving mechanism may include a reduction motor and a transmission belt, and the output shaft of the reduction motor is connected to the driving wheel via the transmission belt.

[0010] The present invention has a reasonable and compact structure and is easy to use. Its driving mechanism is arranged in the supporting seat, which is convenient for staff to operate, maintain and service. At the same time, the two ends of the connecting rope are fixedly connected to the two ends of the front tensioning mechanism, which can effectively solve the problem of the connection rope being loose and causing the inability to work when the load on the bare rod is small in the downstroke. At the same time, moving the second sheave to the upper left and tilting the upper end of the tower to the left can realize two-level giving way. Specifically, when performing the two-level giving way, a giving space of - meters can be obtained, which is safe, labor-saving, simple and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Attached Figure 1This is a schematic diagram of the main structure of the first embodiment.

[0012] Attached Figure 2 It is a left-side structural schematic diagram of the first embodiment.

[0013] The codes in the accompanying drawings are: 1 is a tower, 2 is a counterweight box, 3 is a rope hanger, 4 is a driving wheel, 5 is a driven wheel, 6 is a connecting rope, 7 is a telescopic top rod, 8 is a supporting seat, 9 is a sky wheel rope, 10 is a limiting seat, 11 is a connector, 12 is a connecting rod, 13 is a tensioning spring, 14 is a limiting block, 15 is the first sky wheel, 16 is the second sky wheel, 17 is a sky wheel arm, 18 is a give way rope, 19 is a give way rope pulley, 20 is a first articulated seat, 21 is a second articulated seat, 22 is a third articulated seat, 23 is a fourth articulated seat, 24 is a first pin shaft, 25 is a second pin shaft, 26 is a reduction motor, and 27 is a transmission belt. DETAILED DESCRIPTION

[0014] The present invention is not limited by the following embodiments, and specific implementation methods can be determined based on the technical solution of the present invention and actual conditions.

[0015] In the present invention, for the convenience of description, the relative position relationship of each component is described according to the attached Figure 1 The positional relationships such as front, back, top, bottom, left, and right are described according to the layout directions of the drawings in the specification.

[0016] The present invention will be further described below in conjunction with embodiments and drawings: Embodiment 1, as attached Figure 1 , 2As shown, the tower-type oil pumping unit includes a tower 1, a driving mechanism, a counterweight box 2, a sheave rope 9, a rope hanger 3, a sheave mechanism, a first moving wheel mechanism and a second moving wheel mechanism. The front part of the tower is provided with a first moving wheel mechanism, and the first moving wheel mechanism includes a driving wheel 4, a driven wheel 5 and a connecting rope 6. A support seat 8 is hingedly installed at the lower end of the tower 1, and a driving mechanism is provided inside the support seat 8. A driving wheel 4 is fixedly installed in the support seat 8 corresponding to the right position of the driving mechanism. The output end of the driving mechanism is connected to the driving wheel 4 in a transmission manner. A driven wheel 5 is provided on the upper part of the tower 1 corresponding to the position above the driving wheel 4. A counterweight box 2 is provided between the driving wheel 4 and the driven wheel 5. A connecting rod 6 is fixedly installed at the front end of the counterweight box 2 to keep the connecting rod 6 connected to the driving wheel 4. A front tensioning mechanism for the tension of a connecting rope 6, 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 moving wheel mechanism is provided at the rear part of the tower, the second moving wheel mechanism has the same structure as the first moving wheel mechanism and is symmetrically distributed front to back, a sky wheel mechanism is provided at the center of the upper end of the tower 1, the left end of the sky wheel rope 9 is fixedly connected to the center of the upper end of the counterweight box 2, the right end of the sky wheel rope 9 passes through the sky wheel mechanism and is located on the right side of the tower 1, a rope hanger 3 is fixedly installed on the right end of the sky wheel rope 9, and 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 to back.

[0017] When in use, the driving mechanism drives the driving wheel 4, and with the cooperation of the driven wheel 5 and the connecting rope 6, the counterweight box 2 is driven to move up and down between the driving wheel 4 and the driven wheel 5; by fixedly connecting the left end of the overhead rope 9 to the center of the upper end of the counterweight box 2, the rope suspender 3 is lowered when the counterweight box 2 moves up, and the rope suspender 3 is lifted when the counterweight box 2 moves down; the driving mechanism is arranged in the support seat 8, which is convenient for the staff to operate, maintain and service; 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 connection rope being loose and unable to work when the load on the bare rod is small during the downstroke.

[0018] The tower pumping unit can be further optimized and / or improved according to actual needs: Embodiment 2, as attached Figure 1 , 2As shown, this embodiment is a further optimization of the above embodiment. The front tensioning mechanism includes a C-shaped limit seat 10, an upper tensioning assembly and a lower tensioning assembly. The upper tensioning assembly includes a connector 11, a connecting rod 12, a tensioning spring 13, and a limit block 14. The limit block 14 is provided on the upper side of the limit seat 10. The upper end of the limit block 14 is connected to the lower end of the tensioning spring 13. The upper end of the tensioning 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 limit seat 10 and is fixedly connected to the connector 11. 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 up and down. When in use, the connector 11 is connected to the connecting rope 6, driving the tensioning spring 13 to always maintain a state of being compressed by force, which can effectively limit the shaking of the balance box caused by wind load; when the load of the polished rod in the downstroke is small, the connecting rope 6 is subjected to the elastic force of the tensioning spring 13, so that the connecting rope is always kept in a taut state, which can effectively prevent the connecting rope from loosening.

[0019] Embodiment 3, as attached Figure 1 , 2 As shown, this embodiment is a further optimization of the above embodiment. The sky wheel mechanism includes a first sky wheel 15, a second sky wheel 16, a sky wheel arm 17, a yield rope 18 and a yield rope pulley 19. The first sky wheel 15 is rotatably installed on the upper part of the tower 1, the front center of the first sky wheel 15 is rotatably connected to the sky wheel arm 17, the second sky wheel 16 is rotatably installed on the right end of the sky wheel arm 17, a yield rope pulley 19 is fixedly installed on the upper left end of the tower 1, the right end of the yield rope 18 is fixedly installed on the right part of the sky wheel arm 17, and the left end of the yield rope 18 passes through the yield rope pulley 19 and is located on the left side of the tower. When it is necessary to give way, the left end of the give way rope 18 is pulled. The height of the give way rope pulley 19 is higher than the first gear 15, so that the right end of the give way rope 18 pulls the sheave arm 17 toward the upper left. The left end of the sheave arm 17 is rotatably installed in the center of the first sheave 15. Therefore, the sheave arm 17 will drive the second sheave 16 at the right end to move toward the upper left to achieve giving way, which is convenient for oil pipe operations or pressure operations.

[0020] Embodiment 4, as attached Figure 1 , 2As shown, the present embodiment is a further optimization of the above-mentioned embodiment, a plurality of first hinge seats 20 are installed at intervals at the front and rear ends of the upper left end of the support seat 8, and a first through hole is provided in the center of each first hinge seat 20, and a plurality of second hinge seats 21 are installed at intervals at the front and rear ends of the lower left end of the tower 1, and a second through hole is provided in the center of each second hinge seat 21, and a first pin shaft 24 is provided between each corresponding first through hole and second through hole, a plurality of third hinge seats 22 are installed at intervals at the front and rear ends of the upper right end of the support seat 8, and a third through hole is provided in the center of each third hinge seat 22, and a plurality of fourth hinge seats 23 are installed at intervals at the front and rear ends of the lower right end of the tower 1, and a fourth through hole is provided in the center of each fourth hinge seat 23, and a second pin shaft 25 is provided between each corresponding third through hole and fourth through hole, and a telescopic top rod 7 is provided on the left side of the support seat 8, and the lower end of the telescopic top rod 7 is hingedly installed at the lower part of the support seat 8, and the upper end of the telescopic top rod 7 is hingedly installed at the lower end of the tower 1. When it is necessary to make way, the first pin shaft 24 is removed. 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; according to needs, the second 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, 2-4 meters of making way space can be obtained when performing secondary making way.

[0021] Embodiment 5, as attached Figure 1 , 2 As shown, this embodiment is a further optimization of the above embodiment. The driving mechanism includes a reduction motor 26 and a transmission belt 27 . The output shaft of the reduction motor 26 is connected to the driving wheel 4 through the transmission belt 27 .

[0022] The above technical features constitute the best embodiment of the present invention, which has strong adaptability and best implementation effect. Non-essential technical features can be added or reduced according to actual needs to meet the requirements of different situations.

Claims

1. A tower type oil pumping unit, characterized in that It includes a tower, a driving mechanism, a counterweight box, a sky wheel rope, a rope hanger, a sky wheel mechanism, a first moving wheel mechanism and a second moving wheel mechanism. The front part of the tower is provided with a first moving wheel mechanism, and the first moving wheel mechanism includes a driving wheel, a driven wheel and a connecting rope. A support seat is hingedly installed at the lower end of the tower, and a driving mechanism is provided on the inner side of the support seat. A driving wheel is fixedly installed in the support seat corresponding to the right position of the driving mechanism. The output end of the driving mechanism is connected to the driving wheel by transmission. A driven wheel is provided on the upper part of the tower corresponding to the position above the driving wheel. A counterweight box is provided between the driving wheel and the driven wheel, and a front end of the counterweight box is fixedly installed with a front end capable of maintaining the tension of the connecting rope connected thereto. A tensioning mechanism, one end of the connecting rope is fixedly connected to the upper end of the front tensioning mechanism, the other end of the connecting rope passes through the driven wheel and the driving wheel in sequence and is fixedly connected to the lower end of the front tensioning mechanism, a second moving wheel mechanism is provided at the rear of the tower, the second moving wheel mechanism has the same structure as the first moving wheel mechanism and is symmetrically distributed front to back, a sky wheel mechanism is provided at the center of the upper end of the tower, the left end of the sky wheel rope is fixedly connected to the center of the upper end of the counterweight box, the right end of the sky wheel rope passes through the sky wheel mechanism and is located on the right side of the tower, a rope hanger is fixedly installed on the right end of the sky wheel rope, and 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 to back.

2. The tower type oil pumping unit according to claim 1, characterized in that The front tensioning mechanism includes a C-shaped limit seat, an upper tensioning assembly and a lower tensioning assembly. The upper tensioning assembly includes a connecting head, a connecting rod, a tensioning spring and a limit block. A limit block is provided on the upper side of the limit seat. The upper end of the limit block is connected to the lower end of the tensioning spring. The upper end of the tensioning 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 limit seat and is fixedly connected to the connecting head. 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 up and down.

3. The tower type oil pumping unit according to claim 1 or 2, characterized in that The sky wheel mechanism includes a first wheel, a second wheel, a sky wheel arm, a yield rope and a yield rope pulley. The first wheel is rotatably installed on the upper part of the tower, the front center of the first wheel is rotatably connected to the sky wheel arm, the second wheel is rotatably installed on the right end of the sky wheel arm, and a yield rope pulley is fixedly installed on the upper left end of the tower, the right end of the yield rope is fixedly installed on the right part of the sky wheel arm, and the left end of the yield rope passes through the yield rope pulley and is located on the left side of the tower.

4. The tower type oil pumping unit according to claim 1 or 2, characterized in that A plurality of first hinge seats are installed at front and rear intervals on the upper left end of the support seat, and a first through hole that passes through the front and rear is opened in the center of each first hinge seat; a plurality of second hinge seats are installed at front and rear intervals on the lower left end of the tower, and a second through hole that passes through the front and rear is opened in the center of each second hinge seat, and a first pin shaft is penetrated between each corresponding first through hole and second through hole; a plurality of third hinge seats are installed at front and rear intervals on the upper right end of the support seat, and a third through hole that passes through the front and rear is opened in the center of each third hinge seat; a plurality of fourth hinge seats are installed at front and rear intervals on the lower right end of the tower, and a fourth through hole that passes through the front and rear is opened in the center of each fourth hinge seat, and a second pin shaft is penetrated between each corresponding third through hole and fourth through hole; a telescopic top rod is provided on the left side of the support seat, the lower end of the telescopic top rod is hingedly installed on the lower part of the support seat, and the upper end of the telescopic top rod is hingedly installed on the lower end of the tower.

5. The tower type oil pumping unit according to claim 3, characterized in that A plurality of first hinge seats are installed at front and rear intervals on the upper left end of the support seat, and a first through hole that passes through the front and rear is opened in the center of each first hinge seat; a plurality of second hinge seats are installed at front and rear intervals on the lower left end of the tower, and a second through hole that passes through the front and rear is opened in the center of each second hinge seat, and a first pin shaft is penetrated between each corresponding first through hole and second through hole; a plurality of third hinge seats are installed at front and rear intervals on the upper right end of the support seat, and a third through hole that passes through the front and rear is opened in the center of each third hinge seat; a plurality of fourth hinge seats are installed at front and rear intervals on the lower right end of the tower, and a fourth through hole that passes through the front and rear is opened in the center of each fourth hinge seat, and a second pin shaft is penetrated between each corresponding third through hole and fourth through hole; a telescopic top rod is provided on the left side of the support seat, the lower end of the telescopic top rod is hingedly installed on the lower part of the support seat, and the upper end of the telescopic top rod is hingedly installed on the lower end of the tower.

6. The tower type oil pumping unit according to claim 1, 2 or 5, characterized in that The driving mechanism comprises a reduction motor and a transmission belt, and the output shaft of the reduction motor is connected to the driving wheel through the transmission belt.

7. The tower type oil pumping unit according to claim 3, characterized in that The driving mechanism comprises a reduction motor and a transmission belt, and the output shaft of the reduction motor is connected to the driving wheel through the transmission belt.

8. The tower type oil pumping unit according to claim 4, characterized in that The driving mechanism comprises a reduction motor and a transmission belt, and the output shaft of the reduction motor is connected to the driving wheel through the transmission belt.

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