Mechanical and electrical integrated workover rig

Abstract

The present invention relates to the technical field of oil extraction equipment, and particularly relates to an electromechanical integrated workover rig. The device includes a diesel engine and a drum. The diesel engine is connected to a transmission through a clutch; the transmission, jaw clutch I, and small bevel gear I are mechanically connected in sequence, the electric motor, jaw clutch II, and small bevel gear II are mechanically connected in sequence, and both the small bevel gear I and the small bevel gear II are matched with a large bevel gear for constant meshing use. The present invention realizes the ability to automatically complete the workover operation process, has a high degree of automation, can achieve the rapid switching between the electric motor and the diesel engine according to different loads of the workover rig, has high work efficiency, high speed, good braking effect, low noise, energy conservation and environmental protection, and is safe and reliable in work.

Description

Technical Field:

[0001] The present invention relates to the technical field of oil extraction equipment, and particularly to an electromechanical integrated workover rig. Background Art:

[0002] A workover rig is an important piece of equipment for oil extraction. Its purpose is to send a sucker rod pump to an underground oil reservoir several thousand meters deep by connecting it with a tubing string; if the sucker rod pump malfunctions, the tubing string weighing about 30 - 40 tons is disassembled section by section, and the sucker rod pump is lifted to the ground for replacement. A workover rig is a special crane in the oil industry.

[0003] Workover operations require several workers to cooperate with the workover rig. This work is relatively strenuous and tiring. Particularly helplessly, several workers are often covered in oil from head to toe after a working day, suffering a great deal. Currently, workover operations are one of the few arduous labor industries that have not yet achieved automation. Summary of the Invention:

[0004] The technical problem to be solved by the present invention is to provide an electromechanical integrated workover rig. This device can automatically complete the workover operation process, has a high degree of automation, can achieve rapid switching between an electric motor and a diesel engine according to different loads of the workover rig, has a high operation efficiency, high speed, good braking effect, low noise, energy conservation and environmental protection, and is safe and reliable in operation. It overcomes the deficiencies of the existing workover operations that require several workers to cooperate with the workover rig, which are strenuous and tiring and have low work efficiency.

[0005] The technical solution adopted by the present invention is: an electromechanical integrated workover rig, including a diesel engine and a drum. The diesel engine is connected to a transmission through a clutch; the transmission, jaw clutch I, and bevel pinion I are mechanically connected in sequence, the electric motor, jaw clutch II, and bevel pinion II are mechanically connected in sequence, and bevel pinion I and bevel pinion II are both matched and constantly meshed with a bevel gear. Bevel pinion I and bevel pinion II have the same number of teeth, bevel pinion I and jaw clutch I have the same number of teeth, and bevel pinion II and jaw clutch II have the same number of teeth;

[0006] The bevel gear, power half shaft, parking ratchet, drum, parking ratchet, brake half shaft, and intermediate disc are mechanically connected in sequence. The number of teeth of the bevel gear is an integer multiple of the number of teeth of the parking ratchet. The parking ratchet is fitted with a controllable pawl, and the controllable pawl can disengage from or contact the parking ratchet;

[0007] The intermediate disc rotates synchronously with the drum, and a braking device is installed on the intermediate disc. This braking device can brake to decelerate or stop the rotation of the intermediate disc, and thus decelerate or stop the rotation of the drum;

[0008] The programmable logic controller is respectively connected to the diesel engine, the speed governor cabinet, the clutch, the transmission, the jaw clutch I, the jaw clutch II, and the brake. The start, stop, and speed regulation of the motor are controlled by the speed governor cabinet.

[0009] The braking device includes multiple friction blocks embedded in the intermediate disc. Brake discs are respectively arranged on both sides of the intermediate disc. Fixed side plates are respectively arranged on the outer sides of the two brake discs. The two fixed side plates are fixed on the vehicle body carrying the work machine of the present invention. The outer ends of the two brake discs penetrate into the double-headed bolt pin shafts. A return spring is arranged between the two brake discs. The return spring is sleeved on the double-headed bolt pin shaft. Both ends of the double-headed bolt pin shaft are fixed on the two fixed side plates. Multiple controllable cylinders I are fixed on the outer sides of the fixed side plates. The piston rod of the controllable cylinder I passes through the hole in the fixed side plate and is connected to the brake disc. The two brake discs can clamp and fix the friction blocks through the control of the controllable cylinders I.

[0010] The programmable logic controller selects the PLC5 / 20 module.

[0011] An angle and angular velocity sensor is installed at the shaft end of the power half shaft. The angle and angular velocity sensor is connected to the programmable logic controller.

[0012] The large cone gear, the power half shaft, the quasi-stop ratchet, the controllable pawl, the drum, and the brake half shaft are all arranged in the box body. The box body above the drum is open.

[0013] One end of the controllable pawl is connected to the box body through a pin shaft. The other end of the controllable pawl is connected to a pull rod. The other end of the pull rod passes through the cylinder body and is connected to a cross bar. The cylinder body is connected to the box cover of the box body. A spring is inserted into the pull rod. One end of the spring abuts against the cylinder body, and the other end of the spring abuts against the controllable pawl. The controllable cylinder II is fixed on the box body. The piston rod of the controllable cylinder II is connected to the cross bar. The controllable pawl can contact the quasi-stop ratchet under the spring force of the spring. When the piston rod of the controllable cylinder II pushes the cross bar to extend, the cross bar drives the pull rod and then drives the controllable pawl to leave the quasi-stop ratchet.

[0014] The electromagnetic switch on the controllable cylinder II is connected to the programmable logic controller.

[0015] The shaft intersection angle between the large cone gear and the small cone gear I is 70°. The shaft intersection angle between the large cone gear and the small cone gear II is 70°.

[0016] The brake disc is designed with an inner cavity. The inner cavity is filled with coolant. The cooling circulation system cools the coolant in the inner cavity to cool down the brake disc.

[0017] The beneficial effects of the present invention are as follows: The present invention realizes the ability to automatically complete the workover operation process, with a high degree of automation. It can quickly switch between the motor and the diesel engine according to the different loads of the work machine, with high work efficiency, fast speed, good braking effect, low noise, energy conservation and environmental protection, and reliable and safe operation. Brief Description of the Drawings:

[0018] The present invention will be further described in detail below with reference to the drawings and specific embodiments.

[0019] Figure 1 It is a schematic structural diagram of the present invention.

[0020] Figure 2 It is a schematic structural diagram of the quasi-stop ratchet and the controllable ratchet pawl.

[0021] Figure 3 It is a schematic connection diagram of the programmable logic controller.

[0022] Figure 4 It is a schematic use diagram of the present invention. Specific Embodiments:

[0023] As Figure 1 、 Figure 4 shown, an electromechanical integrated workover rig includes a diesel engine 1 and a drum 13. The diesel engine 1 is connected to a transmission 3 through a clutch 2; the transmission 3, a jaw clutch I 4, and a small bevel gear I 5 are mechanically connected in sequence, and a motor 10, a jaw clutch II 9, and a small bevel gear II 8 are mechanically connected in sequence. The small bevel gear I 5 and the small bevel gear II 8 are both meshed with a large bevel gear 7 for normal use. The small bevel gear I 5 and the small bevel gear II 8 have the same number of teeth, the small bevel gear I 5 and the jaw clutch I 4 have the same number of teeth, and the small bevel gear II 8 and the jaw clutch II 9 have the same number of teeth;

[0024] The large bevel gear 7, a power half shaft 24, a quasi-stop ratchet 12, the drum 13, the quasi-stop ratchet 12, a brake half shaft 23, and an intermediate disk 19 are mechanically connected in sequence. The number of teeth of the large bevel gear 7 is an integer multiple of the number of teeth of the quasi-stop ratchet 12. The quasi-stop ratchet 12 is fitted with a controllable ratchet pawl 11, and the controllable ratchet pawl 11 can disengage from or contact the quasi-stop ratchet 12;

[0025] The intermediate disk 19 rotates synchronously with the drum 13, and a braking device is installed on the intermediate disk 19. The braking device can brake to decelerate or stop the rotation of the intermediate disk 19, thereby decelerating or stopping the rotation of the drum 13;

[0026] The programmable logic controller 30 is respectively connected to the diesel engine 1, a speed control cabinet 14, the clutch 2, the transmission 3, the jaw clutch I 4, the jaw clutch II 9, and a brake. The start, stop, and speed regulation of the motor 10 are controlled by the speed control cabinet 14.

[0027] The braking device includes multiple friction blocks 17 embedded in the intermediate disc 19. Brake discs 16 are respectively arranged on both sides of the intermediate disc 19. Fixed side plates 18 are respectively arranged on the outer sides of the two brake discs 16. The two fixed side plates 18 are fixed on the vehicle body carrying the working machine of the present invention. The outer ends of the two brake discs 16 penetrate into the double-headed bolt pin shafts 20. A return spring 21 is arranged between the two brake discs 16. The return spring 21 is sleeved on the double-headed bolt pin shaft 20. Both ends of the double-headed bolt pin shaft 20 are fixed on the two fixed side plates 18. A plurality of controllable cylinders Ⅰ15 are fixed on the outer sides of the fixed side plates 18. The piston rods of the controllable cylinders Ⅰ15 pass through the holes in the fixed side plates 18 and are connected to the brake discs 16. The two brake discs 16 can clamp and fix the friction blocks 17 under the control of the controllable cylinders Ⅰ15.

[0028] The programmable logic controller 30 selects the PLC5 / 20 module.

[0029] An angle and angular velocity sensor 6 is installed at the shaft end of the power half shaft 24, and the angle and angular velocity sensor 6 is connected to the programmable logic controller 30.

[0030] The large bevel gear 7, the power half shaft 24, the quasi-stop ratchet 12, the controllable pawl 11, the drum 13, and the brake half shaft 23 are all arranged in the box body 22, and the box body 22 above the drum 13 is open.

[0031] As Figure 2 shown, one end of the controllable pawl 11 is connected to the box body 22 through a pin shaft, the other end of the controllable pawl 11 is connected to the pull rod 28, the other end of the pull rod 28 passes through the cylinder body 29 and is connected to the cross bar 27. The cylinder body 29 is connected to the box cover of the box body 22. A spring 26 is inserted into the pull rod 28. One end of the spring 26 abuts against the cylinder body 29, and the other end of the spring 26 abuts against the controllable pawl 11. The controllable cylinder Ⅱ25 is fixed on the box body 22. The piston rod of the controllable cylinder Ⅱ25 is connected to the cross bar 27. The controllable pawl 11 can contact the quasi-stop ratchet 12 under the spring force of the spring 26. When the piston rod of the controllable cylinder Ⅱ25 pushes the cross bar 27 to extend, the cross bar 27 drives the pull rod 28 and then drives the controllable pawl 11 to leave the quasi-stop ratchet 12.

[0032] The electromagnetic switch on the controllable cylinder Ⅱ25 is connected to the programmable logic controller 30.

[0033] The shaft intersection angle between the large bevel gear 7 and the small bevel gear Ⅰ5 is 70°, and the shaft intersection angle between the large bevel gear 7 and the small bevel gear Ⅱ8 is 70°. This structure can provide sufficient layout space for the components of the machine.

[0034] The brake disc 16 is designed with an inner cavity, and the inner cavity is filled with coolant. The cooling circulation system cools the coolant in the inner cavity to cool down the brake disc 16.

[0035] The number of teeth of the large bevel gear 7 is an integer multiple of the number of teeth of the indexing ratchet 12. The small bevel gear I 5 and the small bevel gear II 8 have the same number of teeth, and the small bevel gear I 5 and the jaw clutch I 4 have the same number of teeth. Such a structure can achieve a quick switch between the diesel engine and the electric motor.

[0036] The present invention is provided with a diesel engine 1 and an electric motor 10. The working machine can achieve a quick switch between the electric motor and the diesel engine according to different working procedures and different load requirements. Electric motor load: light load ascending (weight of 1 oil pipe), light load descending (weight of 1 oil pipe), heavy load descending (increasing to 30 - 40 tons, with the braking device cooperating). Diesel engine load: heavy load ascending (decreasing starting from 30 - 40 tons).

[0037] As Figure 4 shown, when the present invention is in use, the steel wire rope wound around the drum 13 suspends the hanging member. When the hanging member needs to be positioned, the intermediate disc 19 is braked through the braking device, and then the drum 13 is braked to achieve the positioning of the hanging member. When the hanging member needs to be positioned during the descending process, in addition to achieving the positioning through the control of the braking device, at this time, the controllable pawl 11 can be controlled to contact the indexing ratchet 12. The present invention is provided with two groups of indexing ratchets 12 and controllable pawls 11. When the controllable pawl 11 disengages from the indexing ratchet 12, the drum 13 can rotate bidirectionally. When the controllable pawl 11 engages with the indexing ratchet 12, the drum 13 can only rotate unidirectionally. The direction of this unidirectional rotation is the direction to drive the hanging member on the steel wire rope of the drum 13 to ascend. The normal state of the indexing ratchet 12 and the controllable pawl 11 is the disengaged state, and the drum 13 can rotate bidirectionally. When the hanging member needs to be positioned during the descending process, the controllable pawl 11 can be controlled to engage with the indexing ratchet 12. At this time, the drum 13 will be in a stable static state, and the gravity of the hanging member is borne by the pawl without the need for the braking device to bear it.

[0038] It can be understood that the above specific description of the present invention is only for explaining the present invention and is not limited to the technical solutions described in the embodiments of the present invention. Those of ordinary skill in the art should understand that the present invention can still be modified or equivalently replaced to achieve the same technical effects; as long as it meets the usage requirements, it is within the protection scope of the present invention.

Claims

1. An electromechanical integrated workover rig, comprising a diesel engine (1) and a drum (13), and the diesel engine (1) is connected to a transmission (3) through a clutch (2); It is characterized in that: The transmission (3), the jaw clutch I (4), and the small bevel gear I (5) are sequentially mechanically connected, the electric motor (10), the jaw clutch II (9), and the small bevel gear II (8) are sequentially mechanically connected, and both the small bevel gear I (5) and the small bevel gear II (8) are matched and constantly meshed with the large bevel gear (7). The small bevel gear I (5) and the small bevel gear II (8) have the same number of teeth, the small bevel gear I (5) and the jaw clutch I (4) have the same number of teeth, and the small bevel gear II (8) and the jaw clutch II (9) have the same number of teeth; The large bevel gear (7), the power half shaft (24), the quasi-stop ratchet (12), the drum (13), the quasi-stop ratchet (12), the brake half shaft (23), and the intermediate disc (19) are sequentially mechanically connected. The number of teeth of the large bevel gear (7) is an integer multiple of the number of teeth of the quasi-stop ratchet (12). The quasi-stop ratchet (12) is fitted with a controllable pawl (11), and the controllable pawl (11) can disengage from or contact the quasi-stop ratchet (12); The intermediate disc (19) rotates synchronously with the drum (13), and a braking device is installed on the intermediate disc (19). The braking device can brake to decelerate or stop the rotation of the intermediate disc (19), and thus decelerate or stop the rotation of the drum (13); The programmable logic controller (30) is respectively connected to the diesel engine (1), the speed control cabinet (14), the clutch (2), the transmission (3), the jaw clutch I (4), the jaw clutch II (9), and the brake. The start, stop, and speed regulation of the electric motor (10) are controlled by the speed control cabinet (14); One end of the controllable pawl (11) is connected to the box body (22) through a pin shaft, the other end of the controllable pawl (11) is connected to a pull rod (28), the other end of the pull rod (28) passes through the cylinder body (29) and is connected to a cross bar (27). The cylinder body (29) is connected to the cover of the box body (22). A spring (26) is inserted into the pull rod (28). One end of the spring (26) abuts against the cylinder body (29), and the other end of the spring (26) abuts against the controllable pawl (11). The controllable cylinder II (25) is fixed on the box body (22), and the piston rod of the controllable cylinder II (25) is connected to the cross bar (27). The controllable pawl (11) can contact the quasi-stop ratchet (12) under the spring force of the spring (26). When the piston rod of the controllable cylinder II (25) pushes the cross bar (27) to extend, the cross bar (27) drives the pull rod (28), and then drives the controllable pawl (11) to leave the quasi-stop ratchet (12).

2. The electromechanical integrated workover rig according to claim 1, It is characterized in that: The braking device includes multiple friction blocks (17) embedded in the intermediate disk (19). Brake disks (16) are respectively arranged on both sides of the intermediate disk (19). Fixed side plates (18) are respectively arranged on the outer sides of the two brake disks (16). The two fixed side plates (18) are fixed on the vehicle body carrying the work machine of the present invention. The outer ends of the two brake disks (16) penetrate through a double-headed bolt pin shaft (20). A return spring (21) is arranged between the two brake disks (16). The return spring (21) is sleeved on the double-headed bolt pin shaft (20). Both ends of the double-headed bolt pin shaft (20) are fixed on the two fixed side plates (18). Multiple controllable cylinders I (15) are fixed on the outer sides of the fixed side plates (18). The piston rod of the controllable cylinder I (15) passes through the hole in the fixed side plate (18) and is connected to the brake disk (16). The two brake disks (16) can clamp and fix the friction blocks (17) under the control of the controllable cylinders I (15).

3. The electro-mechanical integrated workover rig according to claim 1, characterized in that: the programmable logic controller (30) selects a PLC5 / 20 module.

4. The electro-mechanical integrated workover rig according to claim 1, characterized in that: an angle and angular velocity sensor (6) is installed at the shaft end of the power half shaft (24), and the angle and angular velocity sensor (6) is connected to the programmable logic controller (30).

5. The electro-mechanical integrated workover rig according to claim 1, characterized in that: the large bevel gear (7), the power half shaft (24), the quasi-stop ratchet (12), the controllable pawl (11), the drum (13), and the brake half shaft (23) are all arranged in the box body (22), and the box body (22) above the drum (13) is open.

6. The electro-mechanical integrated workover rig according to claim 1, characterized in that: the electromagnetic switch on the controllable cylinder II (25) is connected to the programmable logic controller (30).

7. The electro-mechanical integrated workover rig according to claim 1, characterized in that: the shaft intersection angle between the large bevel gear (7) and the small bevel gear I (5) is 70°, and the shaft intersection angle between the large bevel gear (7) and the small bevel gear II (8) is 70°.

8. The electro-mechanical integrated workover rig according to claim 2, characterized in that: the brake disk (16) is designed with an inner cavity filled with coolant, and a cooling circulation system cools the coolant in the inner cavity to cool down the brake disk (16).

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