Self-adaptive hydraulic pumping unit

Abstract

The utility model discloses a self-adaptive hydraulic pumping unit which comprises a rack, a pumping rod, a balance rope, an upper pull rope, a lower pull rope, a third movable pulley and a weight box. A first fixed pulley and a first fixed pulley block are arranged on the upper portion of the rack. One end of the balance rope is fixedly connected to the rack, and the other end sequentially bypasses the movable pulley III, the fixed pulley I and the fixed pulley block I and is fixedly connected to the top of the weight box; a main hydraulic cylinder is arranged on the rack; a movable pulley block is arranged at the output end of the main hydraulic cylinder; one end of the pull-up rope is fixedly connected to the rack, and the other end sequentially bypasses the movable pulley block and the fixed pulley block and is fixedly connected to the top of the weight box; a fixed pulley block II is arranged at the lower part of the rack; one end of the pull-down rope is fixedly connected to the rack, and the other end sequentially bypasses the movable pulley block and the fixed pulley block II and is fixedly connected to the bottom of the weight box; and the sucker rod is connected with the movable pulley III. Compared with a traditional hydraulic pumping unit, the weight and the size of the weight box can be greatly reduced, and the installation difficulty is lowered.

Description

Technical Field

[0001] The utility model relates to the technical field of oil production equipment, and more specifically to an adaptive hydraulic oil pumping unit. Background Art

[0002] The counterweight of a traditional hydraulic pumping unit is comparable in weight to the sucker rod, often weighing several tons. This bulky counterweight makes installation difficult and poses significant safety risks during operation. Furthermore, during heavy oil cold production or in wells with severe wax buildup, traditional hydraulic pumping units rely on the rod's own weight to overcome resistance and lower the rod, hindering oil production operations.

[0003] Therefore, how to provide an adaptive hydraulic pumping unit that can reduce the weight of the counterweight block is one of the technical problems that urgently need to be solved in this field. Utility Model Content

[0004] In view of this, the present invention provides an adaptive hydraulic oil pumping unit, the purpose of which is to solve the problems existing in the prior art.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] An adaptive hydraulic pumping unit comprises: a frame, a sucker rod, a balancing rope, an upper pull rope and a lower pull rope; a movable pulley three and a counterweight box are respectively provided on the left and right sides of the frame; a fixed pulley one and a fixed pulley assembly one are provided on the upper part of the frame from left to right; one end of the balancing rope is fixedly connected to the frame, and the other end of the balancing rope passes through the movable pulley three, the fixed pulley one and the fixed pulley assembly one in sequence and is fixedly connected to the top of the counterweight box; a main hydraulic cylinder is provided in the middle of the frame; the output of the main hydraulic cylinder A movable pulley group is provided at the output end; one end of the pull-up rope is fixedly connected to the frame, and the other end of the pull-up rope passes through the movable pulley group and the fixed pulley group in sequence and is fixedly connected to the top of the counterweight box; a fixed pulley group 2 is provided at the lower part of the frame; one end of the pull-down rope is fixedly connected to the frame, and the other end of the pull-down rope passes through the movable pulley group and the fixed pulley group 2 in sequence and is fixedly connected to the bottom of the counterweight box; the sucker rod is connected to the movable pulley in three phases through a sucker rod fixing frame.

[0007] Preferably, the movable pulley group includes a movable pulley 1 and a movable pulley 2; the output end of the master hydraulic cylinder is provided with a movable pulley fixing frame; the movable pulley 1 and the movable pulley 2 are symmetrically arranged on the left and right sides of the movable pulley fixing frame.

[0008] Preferably, a fixed pulley seven is provided on the frame; the fixed pulley seven is located above the movable pulley group; one end of the pull-up rope is fixedly connected to the frame, and the other end of the pull-up rope is passed through the movable pulley one, the fixed pulley seven, the movable pulley two and the fixed pulley group one in sequence and is fixedly connected to the top of the counterweight box.

[0009] Preferably, the fixed pulley group 2 includes a fixed pulley 4, a fixed pulley 5 and a fixed pulley 6; the fixed pulley 4, the fixed pulley 5 and the fixed pulley 6 are arranged in sequence from right to left at the lower part of the frame; one end of the pull-down rope is fixedly connected to the frame, and the other end of the pull-down rope is passed through the movable pulley 1, the fixed pulley 6, the movable pulley 2, the fixed pulley 5 and the fixed pulley 4 in sequence and is fixedly connected to the bottom of the counterweight box.

[0010] The first fixed pulley assembly includes a second fixed pulley and a third fixed pulley; the second fixed pulley and the third fixed pulley are arranged side by side on the upper part of the frame.

[0011] Preferably, an auxiliary hydraulic cylinder is provided on the upper portion of the frame; the auxiliary hydraulic cylinder is located directly above the sucker rod fixing bracket; and an electromagnet is provided at the output end of the auxiliary hydraulic cylinder.

[0012] Preferably, the rack includes a lower platform, an intermediate support and an upper platform; the intermediate support is arranged on the top of the lower platform; and the upper platform is arranged on the top of the intermediate support.

[0013] Compared with the prior art, the utility model has achieved the following technical effects:

[0014] 1) By arranging components such as a movable pulley, a fixed pulley assembly, a balancing rope, a movable pulley assembly, a fixed pulley assembly, an upper pulley, and a lower pulley, the present invention reduces the weight of the counterweight to approximately half the weight of the sucker rod. Compared to conventional hydraulic pumping units, the weight and volume of the counterweight box are significantly reduced, thereby simplifying installation and improving operational safety.

[0015] 2) The utility model provides an auxiliary hydraulic cylinder to solve the problem of difficulty in lowering the sucker rod of a traditional hydraulic pumping unit when performing heavy oil cold production or encountering oil wells with severe wax deposition, thereby ensuring the normal operation of the oil production unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural diagram of an adaptive hydraulic oil pumping unit of the utility model;

[0017] Figure 2 This is a schematic diagram of a self-adaptive hydraulic pumping unit of the utility model;

[0018] In the figure: 1. Lower platform; 2. Intermediate support; 3. Upper platform; 4. Counterweight box; 5. Balancing rope; 6. Upper pulley; 7. Lower pulley; 8. Main hydraulic cylinder; 9. Auxiliary hydraulic cylinder; 10. Fixed pulley 1; 11. Fixed pulley 2; 12. Fixed pulley 3; 13. Fixed pulley 4; 14. Fixed pulley 5; 15. Fixed pulley 6; 16. Fixed pulley 7; 17. Movable pulley 1; 18. Movable pulley 2; 19. Movable pulley 3; 20. Sucker rod; 21. Sucker rod fixing bracket. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] Example

[0021] Reference Figure 1-2As shown, the utility model discloses an adaptive hydraulic pumping unit, comprising: a frame, a sucker rod 20, a balancing rope 5, an upper pull rope 6 and a lower pull rope 7; a movable pulley 3 19 and a counterweight box 4 are respectively provided on the left and right sides of the frame; a fixed pulley 10 and a fixed pulley assembly 1 are sequentially provided on the upper part of the frame from left to right; one end of the balancing rope 5 is fixedly connected to the frame, and the other end of the balancing rope 5 passes through the movable pulley 3 19, the fixed pulley 10 and the fixed pulley assembly in sequence and is fixedly connected to the top of the counterweight box 4; the connection point between the balancing rope 5 and the frame is located above the movable pulley 3 19 ; A main hydraulic cylinder 8 is provided in the middle of the frame; a movable pulley group is provided at the output end of the main hydraulic cylinder 8; one end of the upper pull rope 6 is fixedly connected to the frame, and the other end of the upper pull rope 6 passes through the movable pulley group and the fixed pulley group in turn and is fixedly connected to the top of the counterweight box 4; the connection between the upper pull rope 6 and the frame is located above the movable pulley group; a fixed pulley group 2 is provided at the lower part of the frame; one end of the lower pull rope 7 is fixedly connected to the frame, and the other end of the lower pull rope 7 passes through the movable pulley group and the fixed pulley group 2 in turn and is fixedly connected to the bottom of the counterweight box 4; the connection between the lower pull rope 7 and the frame is located at the movable pulley The sucker rod 20 is connected to the movable pulley 3 19 through the sucker rod fixing frame 21; the movable pulley group is located between the fixed pulley group 1 and the fixed pulley group 2; when in use, the counterweight box 4 is connected to the sucker rod 20 through the balance rope 5, and the balance rope 5 is connected to the sucker rod 20 through the movable pulley 3 19. Therefore, the weight of the counterweight box 4 only needs to be set to half the weight of the sucker rod 20 to make the sucker rod 20 and the counterweight box 4 in a balanced state; when the sucker rod needs to rise, the main hydraulic cylinder 8 drives the movable pulley group upward, so that the pull-down rope 7 drives the counterweight The box 4 moves downward, and the downward-moving counterweight box 4 drives the sucker rod 20 to rise through the balance rope 5. At the same time, the main hydraulic cylinder 8 drives the movable pulley group to move upward, so that the pull-up rope 6 can be in a relaxed state; when the sucker rod needs to be lowered, the main hydraulic cylinder 8 drives the movable pulley group to move downward, so that the pull-up rope 6 drives the counterweight box 4 to move upward, and the upward-moving counterweight box 4 relaxes the balance rope 5, so that the sucker rod 20 descends under the action of its own gravity. At the same time, the main hydraulic cylinder 8 drives the movable pulley group to move downward, so that the pull-down rope 7 is in a relaxed state.

[0022] The above technical solution cooperates with components such as movable pulley three, fixed pulley group one, balance rope, movable pulley group, fixed pulley group two, pull-up rope, and pull-down rope. While ensuring that the sucker rod can move up and down normally, the weight of the counterweight box can be reduced to half the weight of the sucker rod, thereby reducing installation difficulty and improving operational safety.

[0023] In this embodiment, the movable pulley group includes movable pulley 17 and movable pulley 2 18; the output end of the master hydraulic cylinder 8 is provided with a movable pulley fixing frame; the output end of the master hydraulic cylinder 8 is connected to the middle position of the movable pulley fixing frame; movable pulley 17 and movable pulley 2 18 are symmetrically arranged on the left and right sides of the movable pulley fixing frame.

[0024] In this embodiment, a fixed pulley seven 16 is provided on the frame; the fixed pulley seven 16 is located above the movable pulley group, and the fixed pulley seven 16 is located below the fixed pulley one 10; one end of the pull-up rope 6 is fixedly connected to the frame, and the other end of the pull-up rope 6 is passed through the movable pulley one 17, the fixed pulley seven 16, the movable pulley two 18 and the fixed pulley group one in sequence and is fixedly connected to the top of the counterweight box 4.

[0025] In this embodiment, the fixed pulley group two includes a fixed pulley four 13, a fixed pulley five 14 and a fixed pulley six 15; the fixed pulley four 13, the fixed pulley five 14 and the fixed pulley six 15 are arranged in sequence from right to left at the lower part of the frame; one end of the pull-down rope 7 is fixedly connected to the frame, and the other end of the pull-down rope 7 is sequentially passed around the movable pulley one 17, the fixed pulley six 15, the movable pulley two 18, the fixed pulley five 14 and the fixed pulley four 13 and fixedly connected to the bottom of the counterweight box 4.

[0026] In this embodiment, the first fixed pulley assembly includes a second fixed pulley 11 and a third fixed pulley 12 ; the second fixed pulley 11 and the third fixed pulley 12 are arranged side by side on the upper portion of the frame; the second fixed pulley 11 is located on the left side of the third fixed pulley 12 .

[0027] In this embodiment, an auxiliary hydraulic cylinder 9 is provided on the upper part of the frame; the auxiliary hydraulic cylinder 9 is located directly above the sucker rod fixing frame 21; an electromagnet is provided at the output end of the auxiliary hydraulic cylinder 9; when encountering cold oil extraction, the output end of the auxiliary hydraulic cylinder 9 is connected to the sucker rod fixing frame 21 under the action of the electromagnet, and the auxiliary hydraulic cylinder 9 drives the sucker rod fixing frame 21 to move downward, and the sucker rod fixing frame 21 drives the sucker rod 20 to descend. When the sucker rod 20 can descend smoothly, the electromagnet is turned off, the output end of the auxiliary hydraulic cylinder 9 is disengaged from the sucker rod fixing frame 21, and the output end of the auxiliary hydraulic cylinder 9 rises back to the initial position.

[0028] In this embodiment, the rack includes a lower platform 1 , an intermediate support 2 and an upper platform 3 ; the intermediate support 2 is arranged on the top of the lower platform 1 ; and the upper platform 3 is arranged on the top of the intermediate support 2 .

[0029] In this embodiment, fixed pulley 10 , fixed pulley 2 11 and fixed pulley 3 12 are fixedly connected to the upper platform 3 ; and the master hydraulic cylinder 8 is fixedly connected to the intermediate bracket 2 .

[0030] In this embodiment, one end of the balancing rope 5 is fixedly connected to the bottom of the upper platform 3, and the other end of the balancing rope 5 passes through the movable pulley 3 19, the fixed pulley 1 10, the fixed pulley 2 11 and the fixed pulley 3 12 in sequence and is fixedly connected to the top of the counterweight box 4.

[0031] In this embodiment, one end of the pull-up rope 6 is fixedly connected to the intermediate bracket 2, and the other end of the pull-up rope 6 passes through movable pulley 17, fixed pulley 7 16, movable pulley 2 18, fixed pulley 2 11 and fixed pulley 3 12 in sequence and is fixedly connected to the top of the counterweight box 4.

[0032] The above description is merely a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An adaptive hydraulic pumping unit, characterized in that: include: A frame, a sucker rod (20), a balance rope (5), an upper pull rope (6) and a lower pull rope (7); a movable pulley three (19) and a counterweight box (4) are respectively provided on the left and right sides of the frame; a fixed pulley one (10) and a fixed pulley group one are sequentially provided on the upper part of the frame from left to right; one end of the balance rope (5) is fixedly connected to the frame, and the other end of the balance rope (5) is sequentially passed through the movable pulley three (19), the fixed pulley one (10) and the fixed pulley group one and is fixedly connected to the top of the counterweight box (4); a main hydraulic cylinder (8) is provided in the middle of the frame; the main hydraulic cylinder (8) The output end of the pull-up rope (6) is provided with a movable pulley group; one end of the pull-up rope (6) is fixedly connected to the frame, and the other end of the pull-up rope (6) passes through the movable pulley group and the fixed pulley group one in sequence and is fixedly connected to the top of the counterweight box (4); the lower part of the frame is provided with a fixed pulley group two; one end of the pull-down rope (7) is fixedly connected to the frame, and the other end of the pull-down rope (7) passes through the movable pulley group and the fixed pulley group two in sequence and is fixedly connected to the bottom of the counterweight box (4); the sucker rod (20) is connected to the movable pulley three (19) through the sucker rod fixing frame (21).

2. The adaptive hydraulic pumping unit according to claim 1, characterized in that: The movable pulley group includes a movable pulley 1 (17) and a movable pulley 2 (18); the output end of the master hydraulic cylinder (8) is provided with a movable pulley fixing frame; the movable pulley 1 (17) and the movable pulley 2 (18) are symmetrically arranged on the left and right sides of the movable pulley fixing frame.

3. The adaptive hydraulic pumping unit according to claim 2, characterized in that: The frame is provided with a fixed pulley seven (16); the fixed pulley seven (16) is located above the movable pulley group; one end of the pull-up rope (6) is fixedly connected to the frame, and the other end of the pull-up rope (6) is sequentially passed through the movable pulley one (17), the fixed pulley seven (16), the movable pulley two (18) and the fixed pulley group one and is fixedly connected to the top of the counterweight box (4).

4. The adaptive hydraulic pumping unit according to claim 3, characterized in that: The fixed pulley group 2 includes a fixed pulley 4 (13), a fixed pulley 5 (14) and a fixed pulley 6 (15); the fixed pulley 4 (13), the fixed pulley 5 (14) and the fixed pulley 6 (15) are sequentially arranged at the lower part of the frame from right to left; one end of the pull-down rope (7) is fixedly connected to the frame, and the other end of the pull-down rope (7) is sequentially passed through the movable pulley 1 (17), the fixed pulley 6 (15), the movable pulley 2 (18), the fixed pulley 5 (14) and the fixed pulley 4 (13) and is fixedly connected to the bottom of the counterweight box (4).

5. The adaptive hydraulic pumping unit according to claim 1, characterized in that: The fixed pulley group 1 includes a fixed pulley 2 (11) and a fixed pulley 3 (12); the fixed pulley 2 (11) and the fixed pulley 3 (12) are arranged side by side on the upper part of the frame.

6. The adaptive hydraulic pumping unit according to claim 1, characterized in that: An auxiliary hydraulic cylinder (9) is provided on the upper portion of the frame; the auxiliary hydraulic cylinder (9) is located directly above the sucker rod fixing frame (21); and an electromagnet is provided at the output end of the auxiliary hydraulic cylinder (9).

7. The adaptive hydraulic pumping unit according to claim 1, characterized in that: The frame comprises a lower platform (1), an intermediate support (2) and an upper platform (3); the intermediate support (2) is arranged on the top of the lower platform (1); and the upper platform (3) is arranged on the top of the intermediate support (2).

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