A dual-drive power system for an internal slag discharge dual-channel drilling rig

Abstract

This invention provides a dual-drive power system for an internal slag discharge dual-channel drilling rig, comprising: an external drive unit, an internal drive unit, and a slag collection device. The internal drive unit drives the inner drill rod of the dual-channel drill rod to rotate, and the external drive unit drives the outer drill rod of the dual-channel drill rod to rotate. The structural design of this invention allows the dual-drive power system to drive the inner and outer drill rods of the dual-channel drill rod to rotate in different directions and at different speeds. Therefore, the working state of the dual-channel drill rod can be adjusted in real time according to the actual drilling conditions. It also has the advantages of facilitating smooth slag discharge and reducing clogging; easy assembly and connection; stable connection; high sealing performance; and simple manufacturing process.

Description

Technical Field

[0001] This invention belongs to the field of drilling rig technology, and in particular relates to a dual-drive power system for an internal slag discharge dual-channel drilling rig. Background Technology

[0002] In related technologies, drilling operations often encounter problems such as stuck drill bits and even broken threaded connections. Repeated testing revealed that this is because the drill rod is assembled from hollow steel pipes, with the drilling medium entering through a central through-hole and the drilled material exiting along the gap between the steel pipe's outer surface and the borehole. During this process, the flow of the medium and material disrupts the borehole, causing it to enlarge or deviate, thus leading to the aforementioned malfunctions.

[0003] By designing a dual-channel drill pipe, I solved the slag removal problem, thus overcoming the aforementioned technical difficulties. However, during continuous use, in order to further optimize the slag removal of the dual-channel drill pipe, this invention provides a dual-drive power system for an internal slag removal dual-channel drilling rig. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides a dual-drive power system for an internal slag discharge dual-channel drilling rig. To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general description, nor is it intended to identify key / important components or describe the scope of protection of these embodiments. Its sole purpose is to present some concepts in a simple form as a prelude to the detailed description that follows.

[0005] The present invention adopts the following technical solution:

[0006] In some optional embodiments, the present invention provides a dual-drive power system for an internal slag discharge dual-channel drilling rig, comprising: an external drive unit for driving the rotation of the outer drill rod and an internal drive unit for driving the rotation of the inner drill rod;

[0007] The external drive unit includes an output connector and a first power output shaft. The output connector is located at the front end of the first power output shaft, and the outer wall of the front end of the output connector has a torque transmission mating surface adapted to the external drill rod.

[0008] The internal drive unit includes a slag discharge shaft and a second power output shaft. The slag discharge shaft is located inside the first power output shaft. The outer wall of the front end of the slag discharge shaft is sequentially provided with a torque transmission mating surface and a sealing surface adapted to the inner drill pipe. The outer wall of the end of the slag discharge shaft is sequentially provided with a torque transmission mating surface and a sealing surface adapted to the second power output shaft.

[0009] Furthermore, the first power output shaft, the slag discharge shaft, and the second power output shaft are all hollow drill rods; an outer channel is formed between the outer surface of the slag discharge shaft and the inner surface of the first power output shaft, and the outer channel is connected to the slag discharge channel of the dual-channel drill rod; the interiors of the slag discharge shaft and the second power output shaft are connected to form an inner channel, and the inner channel is connected to the medium channel of the dual-channel drill rod.

[0010] Furthermore, the dual-drive power system of the internal slag discharge dual-channel drilling rig also includes: a slag collection device; the slag collection chamber of the slag collection device is connected to the external channel.

[0011] Furthermore, the external drive unit also includes: a first driver and a first gear; the first gear is disposed on the outer wall of the first power output shaft, and the output end of the first driver meshes with the first gear.

[0012] Furthermore, the internal drive unit also includes a second driver and a second gear; the second gear is disposed on the outer wall of the second power output shaft, and the output end of the second driver meshes with the second gear.

[0013] Furthermore, the dual-drive power system of the internal slag discharge dual-channel drilling rig further includes: a support flange and a bearing; the support flange is disposed on the inner wall of the first power output shaft, the outer ring of the bearing is connected to the support flange, and the inner ring of the bearing is connected to the outer surface of the slag discharge shaft.

[0014] Furthermore, the outer surface of the slag discharge shaft is provided with spiral slag discharge blades.

[0015] Furthermore, the dual-drive power system of the internal slag discharge dual-channel drilling rig further includes: a bearing housing outer body and a connecting flange, wherein the connecting flange is disposed on the bearing housing outer body and is connected to the chamber wall of the slag collection chamber of the slag collection device.

[0016] Furthermore, the dual-drive power system of the internal slag discharge dual-channel drilling rig further includes: a support connecting seat, a traction lug seat, and a guide seat; the support connecting seat is disposed on the guide seat, and the guide seat is connected to the power head moving structure on the drilling frame through the traction lug seat; the internal drive unit further includes: a housing connecting seat, which is installed on the support connecting seat.

[0017] The beneficial effects of this invention are as follows: The dual-drive power system of the internal slag discharge dual-channel drilling rig of this invention can be used to drive the dual-channel drill rod, especially the dual-channel drill rod that can rotate in different directions and at different speeds. By driving the inner and outer drill rods of the dual-channel drill rod separately, this invention can significantly improve the slag discharge efficiency of the dual-channel drill rod during drilling, and solve the problems of drill jamming and even breakage of threaded connections that often occur during drilling. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the dual-drive power system of the present invention;

[0019] Figure 2 This is a schematic diagram of the external drive unit of the present invention;

[0020] Figure 3 yes Figure 2 BB view;

[0021] Figure 4 This is a schematic diagram of the slag discharge shaft of the present invention;

[0022] Figure 5 This is a schematic diagram of the internal driving unit of the present invention;

[0023] Figure 6 yes Figure 5 The D-direction view;

[0024] Figure 7 This is a process assembly diagram of the dual-drive power system of the present invention;

[0025] Figure 8 This is a schematic diagram of a dual-channel drill pipe. Detailed Implementation

[0026] The following description and accompanying drawings fully illustrate specific embodiments of the invention to enable those skilled in the art to practice them. Other embodiments may include structural, logical, electrical, procedural, and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Some portions and features of some embodiments may be included in or replace portions and features of other embodiments.

[0027] like Figure 1-7 As shown in some illustrative embodiments, the present invention provides a dual-drive power system for an internal slag discharge dual-channel drilling rig, comprising: an external drive unit 1, an internal drive unit 23, and a slag collection device 14.

[0028] like Figure 7-8As shown, the dual-drive power system of the present invention is used to drive the dual-channel drill rod 41 of the drilling rig to rotate. The dual-channel drill rod 41 includes an outer drill rod 33 and an inner drill rod 34 disposed inside the outer drill rod 33. The inner drill rod 34 can rotate inside the outer drill rod 33, and a slag discharge channel 39 for slag discharge is formed between the outer surface of the inner drill rod 34 and the inner surface of the outer drill rod 33. A medium channel 38 for conveying medium is formed inside the inner drill rod 34.

[0029] The inner drive unit 23 of the present invention is used to drive the inner drill rod 34 to rotate, and the outer drive unit 1 is used to drive the outer drill rod 33 to rotate. Multiple dual-channel drill rods 41 are connected in sequence according to the actual drilling situation to finally form an integral drill rod. The dual drive power system can drive the integral drill rod to rotate.

[0030] The external drive unit 1 includes: a first driver 22, a first gear 2, a first power output shaft 3, and an output connector 4.

[0031] The output end of the first driver 22 meshes with the first gear 2. Specifically, the first driver 22 can be a motor, with a power gear on its output shaft. This power gear meshes with the first gear 2, thereby enabling the first driver 22 to drive the first gear 2 to rotate. The first gear 2 is located on the outer wall of the first power output shaft 3. Therefore, when the first gear 2 rotates, it drives the first power output shaft 3 to rotate. The output connector 4 is located at the front end of the first power output shaft 3. When the first driver 22 drives the first power output shaft 3 to rotate, it in turn drives the output connector 4 to rotate.

[0032] like Figure 8 As shown, a first torque transmission mating surface 37 is provided on the inner wall of one end of the outer drill rod 33.

[0033] In this invention, the torque transmission mating surface adapted to the external drill pipe 33 is defined as the second torque transmission mating surface 11. Specifically, the second torque transmission mating surface 11 is formed on the outer wall of the front end of the output connector 4, and the first torque transmission mating surface 37 is adapted to the second torque transmission mating surface 11. Adaptation means that both the first torque transmission mating surface 37 and the second torque transmission mating surface 11 are provided with threads or splines, and the threads or splines on the two mating surfaces mesh to achieve torque transmission.

[0034] In summary, the working process of the external drive unit 1 is as follows: the first driver 22 drives the first gear 2 to rotate, which in turn drives the first power output shaft 3 to rotate, thereby driving the output connector 4 at the front end to rotate, and finally driving the external drill rod 33 to rotate.

[0035] The internal drive unit 23 includes: a second driver 44, a second gear 24, a slag discharge shaft 6, and a second power output shaft 25.

[0036] The slag discharge shaft 6 is located inside the first power output shaft 3, and its end is connected to the second power output shaft 25. The output end of the second driver 44 meshes with the second gear 24. Specifically, the second driver 44 can be a motor, and a power gear is provided on the output shaft of the motor, so that the power gear on the motor output shaft meshes with the second gear 24, thereby achieving the purpose of the second driver 44 driving the second gear 24 to rotate. The second gear 24 is located on the outer wall of the second power output shaft 25. Therefore, when the second gear 24 rotates, it can drive the second power output shaft 25 to rotate, thereby driving the slag discharge shaft 6 to rotate.

[0037] like Figure 8 As shown, the inner wall of one end of the inner drill rod 34 is provided with a third torque transmission mating surface 36 and a first sealing surface 35.

[0038] In this invention, the torque transmission mating surface adapted to the inner drill pipe 34 is defined as the fourth torque transmission mating surface 8, and the sealing surface adapted to the inner drill pipe 34 is defined as the second sealing surface 9. That is, the fourth torque transmission mating surface 8 and the second sealing surface 9 are sequentially opened on the outer wall of the front end of the slag discharge shaft 6, and the third torque transmission mating surface 36 is adapted to the fourth torque transmission mating surface 8. At the same time, the first sealing surface 35 is adapted to the second sealing surface 9.

[0039] The above-mentioned matching means that both the third torque transmission mating surface 36 and the fourth torque transmission mating surface 8 are provided with threads or splines, and the threads or splines on the two mating surfaces mesh with each other to realize the transmission of torque; the first sealing surface 35 and the second sealing surface 9 are both smooth surfaces. When the inner drill rod 34 is connected to the slag discharge shaft 6, the first sealing surface 35 and the second sealing surface 9 fit together to achieve a seal and prevent leakage.

[0040] like Figure 5 As shown, the outer wall of the end of the second power output shaft 25 that is connected to the slag discharge shaft 6 is provided with a fifth torque transmission mating surface 26 and a third sealing surface 27 in sequence.

[0041] In this invention, the torque transmission mating surface adapted to the second power output shaft 25 is defined as the sixth torque transmission mating surface 13, and the sealing surface adapted to the second power output shaft 25 is defined as the fourth sealing surface 12. That is, the sixth torque transmission mating surface 13 and the fourth sealing surface 12 are sequentially opened on the outer wall of the end of the slag discharge shaft 6, and the fifth torque transmission mating surface 26 is adapted to the sixth torque transmission mating surface 13. At the same time, the third sealing surface 27 is adapted to the fourth sealing surface 12.

[0042] The above-mentioned matching means that both the fifth torque transmission mating surface 26 and the sixth torque transmission mating surface 13 are provided with threads or splines, and the threads or splines on the two mating surfaces mesh with each other to realize the transmission of torque; the third sealing surface 27 and the fourth sealing surface 12 are both smooth surfaces. When the second power output shaft 25 is connected to the slag discharge shaft 6, the third sealing surface 27 and the fourth sealing surface 12 fit together to achieve a seal and prevent leakage.

[0043] In summary, the working process of the inner drive unit 23 is as follows: the second driver 44 drives the second gear 24 to rotate, which in turn drives the second power output shaft 25 to rotate, thereby driving the front end slag discharge shaft 6 to rotate inside the first power output shaft 3, and finally driving the inner drill rod 34 to rotate inside the outer drill rod 33.

[0044] The structural design of the outer drive unit 1 and the inner drive unit 23 enables the dual drive power system of the present invention to drive the inner and outer drill rods of the dual-channel drill rod 41 to rotate in different directions and at different speeds, thereby allowing the working state of the dual-channel drill rod to be adjusted in real time according to the actual drilling situation.

[0045] The dual-drive power system's structural design facilitates the smooth discharge of slag and prevents clogging. When used in conjunction with the dual-channel drill rod 41, it significantly improves the slag discharge efficiency of the drill rod.

[0046] The structural design of the dual-drive power system of this invention has the advantages of easy assembly and connection, while also ensuring connection stability and high sealing performance, and the manufacturing process is simple.

[0047] The first power output shaft 3, the slag discharge shaft 6, and the second power output shaft 25 of this invention are all hollow drill rods. An outer channel 21 is formed between the outer surface of the slag discharge shaft 6 and the inner surface of the first power output shaft 3, and the outer channel 21 is connected to the slag discharge channel 39 of the dual-channel drill rod. The interiors of the slag discharge shaft 6 and the second power output shaft 25 are connected to form an inner channel 20, and the inner channel 20 is connected to the medium channel 38 of the dual-channel drill rod.

[0048] During operation, the medium enters the inner channel 20 through the medium channel 38 and is discharged from the outer channel 21 and the slag discharge channel 39 along with the slag. This reduces the damage to the borehole caused by the drilled material and medium, ensuring the drilling dimensions and accuracy. The medium can be air or water. Preferably, the outer surface of the slag discharge shaft 6 is equipped with spiral slag discharge blades 10. When the slag discharge shaft 6 rotates, it drives the spiral slag discharge blades 10 to rotate, thereby achieving slag discharge. The design of the spiral slag discharge blades 10 has the advantages of improving slag discharge efficiency and ensuring slag discharge stability.

[0049] The slag collection chamber 16 of the slag collection device 14 is connected to the outer channel 21. The slag collection device 14 is used for slag collection and also achieves the purposes of venting and buffering.

[0050] The present invention also includes: a bearing housing outer body 28 and a connecting flange 29. The connecting flange 29 is disposed on the bearing housing outer body 28, and the connecting flange 29 is bolted to the chamber wall of the slag collection chamber 16 of the slag collection device 14, thereby ensuring the stability of the slag collection device 14.

[0051] The outer wall of the slag collection device 14 is provided with an outdoor mating surface 15 for the slag collection chamber, and the side of the connecting flange 29 facing the slag collection device 14 is provided with a front mating surface 30. Both the outdoor mating surface 15 and the front mating surface 30 are smooth planes. After installation, the two fit tightly together, thereby ensuring the connection stability of the system.

[0052] The present invention also includes a support flange 5 and a bearing 7. The support flange 5 is disposed on the inner wall of the first power output shaft 3 and serves to support the slag discharge shaft 6. The outer ring of the bearing 7 is connected to the support flange 5, and the inner ring of the bearing 7 is connected to the outer surface of the slag discharge shaft 6, that is, both ends of the slag discharge shaft 6 are mounted on the inner wall of the first power output shaft 3 through the bearing 7.

[0053] The design of bearing 7 ensures that the rotation direction and speed of the first power output shaft 3, the slag discharge shaft 6, and the second power output shaft 25 do not affect each other. That is, the inner and outer shafts can rotate in the same direction and at the same speed, rotate in the same direction but at different speeds, rotate at the same speed but in different directions, and rotate at different speeds but in different directions under the drive of the first driver 22 and the second driver 44. This allows for various coordinated motion modes, thereby enabling real-time control of the working state of the inner drill rod 34 and the outer drill rod 33 of the dual-channel drill rod according to the actual drilling conditions.

[0054] The front end of the dual-channel drill pipe is equipped with a drill bit 40. The dual-drive power system of the present invention ultimately drives the drill bit 40 to rotate, thereby achieving the drilling purpose.

[0055] The present invention also includes: a support connecting seat 17, a traction lug seat 18, and a guide seat 19. The support connecting seat 17 is disposed on the guide seat 19, and the outer drive unit 1 and the inner drive unit 23 are mounted on the support connecting seat 17. The guide seat 19 is connected to the power head moving structure 43 on the drill frame 42 through the traction lug seat 18. The power head moving structure 43 is a hydraulic cylinder or a chain. During operation, the power head moving structure 43 drives the guide seat 19 to slide on the drill frame 42, thereby realizing the position adjustment of the dual-drive power system of the present invention. The above structural design has the advantages of simple structure and stable operation.

[0056] The internal drive unit 23 also includes a housing connection seat 32, which is mounted on the support connection seat 17 to ensure the stability of the internal drive unit 23.

[0057] The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present invention should be considered equivalent substitutions and should be included within the protection scope of the present invention.

Claims

1. A dual-drive power system for an internal slag discharge dual-channel drilling rig, characterized in that, include: An external drive unit for driving the rotation of the outer drill pipe and an internal drive unit for driving the rotation of the inner drill pipe. The external drive unit includes: an output connector, a first power output shaft, a first driver, and a first gear; the output connector is disposed at the front end of the first power output shaft, and the outer wall of the front end of the output connector has a torque transmission mating surface adapted to the external drill rod; the first gear is disposed on the outer wall of the first power output shaft, and the output end of the first driver meshes with the first gear; The internal drive unit includes: a slag discharge shaft, a second power output shaft, a second driver, and a second gear; the slag discharge shaft is located inside the first power output shaft, and the outer wall of the front end of the slag discharge shaft is sequentially provided with a torque transmission mating surface and a sealing surface adapted to the inner drill pipe, and the outer wall of the end of the slag discharge shaft is sequentially provided with a torque transmission mating surface and a sealing surface adapted to the second power output shaft; the second gear is disposed on the outer wall of the second power output shaft, and the output end of the second driver meshes with the second gear; The first power output shaft, the slag discharge shaft, and the second power output shaft are all hollow drill rods; the outer surface of the slag discharge shaft is provided with spiral slag discharge blades. An outer channel is formed between the outer surface of the slag discharge shaft and the inner surface of the first power output shaft, and the outer channel is connected to the slag discharge channel of the dual-channel drill rod. The slag discharge shaft and the second power output shaft are internally connected to form an inner channel, and the inner channel is connected to the medium channel of the dual-channel drill rod.

2. The dual-drive power system of an internal slag discharge dual-channel drilling rig according to claim 1, characterized in that, Also includes: Slag collection device; the slag collection chamber of the slag collection device is connected to the external channel.

3. The dual-drive power system of an internal slag discharge dual-channel drilling rig according to claim 2, characterized in that, Also includes: A support flange and a bearing are provided; the support flange is disposed on the inner wall of the first power output shaft, the outer ring of the bearing is connected to the support flange, and the inner ring of the bearing is connected to the outer surface of the slag discharge shaft.

4. The dual-drive power system of an internal slag discharge dual-channel drilling rig according to claim 3, characterized in that, Also includes: The bearing housing outer body and the connecting flange are provided on the bearing housing outer body and are connected to the chamber wall of the slag collection chamber of the slag collection device.

5. The dual-drive power system of an internal slag discharge dual-channel drilling rig according to claim 4, characterized in that, Also includes: The system includes a support connecting seat, a traction lug seat, and a guide seat; the support connecting seat is mounted on the guide seat, and the guide seat is connected to the power head moving structure on the drill frame via the traction lug seat. The internal drive unit further includes a housing connecting seat, which is mounted on the support connecting seat.

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