High temperature resistant drill pipe with built-in cooling channels

Abstract

The utility model relates to the technical field of drill pipe, disclose a built -in cooling channel's high temperature resistant drill pipe, including drill pipe no.

Description

Technical Field

[0001] This utility model relates to the field of drill pipe technology, and in particular to a high-temperature resistant drill pipe with a built-in cooling channel. Background Technology

[0002] In fields such as geological exploration and mining, drill pipes, as core drilling components, need to operate continuously in high-temperature and high-pressure environments. Their high-temperature resistance and structural stability directly affect drilling efficiency and safety. As drilling depth increases, the requirements for drill pipe length adjustment, connection firmness, and drill bit installation stability increase significantly. Traditional drill pipes, due to poor adaptability and easy loosening of connections, are no longer able to meet the needs of complex working conditions.

[0003] Existing high-temperature resistant drill pipes with built-in cooling channels have significant drawbacks: First, length adjustment is limited. Traditional drill pipe connection structures are fixed, requiring replacement of the entire pipe when the length is insufficient, making flexible splicing and extension impossible, increasing equipment costs and operation time. Second, connection strength is insufficient. Gaps easily appear at drill pipe joints due to vibration, leading to reduced heat transfer efficiency, affecting the function of the cooling channels, and even causing structural deformation. Third, drill bits are prone to loosening. The threaded connection between the drill bit and the drill pipe lacks pre-tightening force; long-term high-frequency vibration can increase thread clearance, causing the drill bit to fall off, posing a safety hazard. These problems restrict the continuous and stable operation of drill pipes in high-temperature environments. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a high-temperature resistant drill rod with a built-in cooling channel. This invention aims to solve the problems of limited length adjustment, insufficient connection firmness, and easy loosening of drill bits in existing high-temperature resistant drill rods with built-in cooling channels.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A high-temperature resistant drill rod with a built-in cooling channel includes a drill rod one, a top plate fixedly connected to the top side of the drill rod one, a base plate fixedly connected to the bottom side of the drill rod one, a spring groove formed on the bottom side of the base plate, a connecting component disposed inside the spring groove, a spiral rib fixedly connected inside the drill rod one, connecting rings fixedly connected to the top and bottom sides of the spiral rib, a telescopic component disposed inside the spiral rib, a drill rod two disposed on the top side of the top plate, a drill bit disposed on the bottom side of the base plate, and multiple drill teeth fixedly connected to the bottom side of the drill bit.

[0006] Furthermore, the connecting assembly includes a screw, the top end of which is located inside the spring groove. The spring groove contains a plurality of springs, one end of which is connected to the top side of the screw, and the other end of which is connected to the top side of the spring groove.

[0007] Furthermore, both the screw and the chassis have through holes inside, and a receiving rod is slidably connected inside the through holes.

[0008] Furthermore, the top side of the drill bit is provided with a threaded groove, and an abutment rod is fixedly connected to the bottom side of the threaded groove.

[0009] Furthermore, the telescopic assembly includes a telescopic rod, with sliding grooves provided at the bottom ends of both the left and right sides of the telescopic rod. Sliding strips are fixedly connected to both the left and right sides of the inner wall of the spiral rib, and the outer wall of the sliding strips is slidably connected to the inside of the sliding groove. The bottom side of the telescopic rod is fixedly connected to the top side of the receiving rod.

[0010] Furthermore, an extension hole is provided on the top side of the top plate, and the top end of the outer wall of the telescopic rod is slidably connected to the inside of the extension hole.

[0011] Furthermore, a threaded annular groove is provided on the top side of the top plate, and a threaded sleeve is threadedly connected inside the threaded annular groove. The top side of the threaded sleeve is fixedly connected to the bottom side of the second drill rod, and an insertion hole is provided inside the threaded sleeve.

[0012] Furthermore, both drill pipe one and drill pipe two have heat insulation layers on their outer walls, and the interior of drill pipe one is filled with oil-based coolant.

[0013] This utility model has the following beneficial effects: 1. In this utility model, when the length of a single drill rod is insufficient, the threaded sleeve installed into the threaded annular groove can connect drill rod one and drill rod two to extend the length. When installing the drill bit, the abutment rod pushes the receiving rod and the telescopic rod upward, and the top of the telescopic rod enters the interior of drill rod two, reinforcing the connection between the two and improving the strength.

[0014] 2. In this utility model, when installing the drill bit, the screw is pulled out of the spring groove and stretches the spring as it rotates. After installation, the spring continues to pull the screw and the drill bit, making the screw and the thread groove fit more tightly, which significantly improves the firmness of the drill bit installation. Attached Figure Description

[0015] Figure 1 A perspective view of a high-temperature resistant drill rod with a built-in cooling channel proposed in this utility model; Figure 2 This is a schematic diagram of the spring structure of a high-temperature resistant drill rod with a built-in cooling channel proposed in this utility model. Figure 3 This is a schematic diagram of the spiral rib structure of a high-temperature resistant drill rod with a built-in cooling channel proposed in this utility model. Figure 4 This is a schematic diagram of the threaded annular groove structure of a high-temperature resistant drill rod with a built-in cooling channel proposed in this utility model.

[0016] Legend: 1. Drill rod one; 2. Base plate; 3. Drill bit; 4. Drill tooth; 5. Top plate; 6. Drill rod two; 7. Threaded groove; 8. Abutment rod; 9. Screw; 10. Support rod; 11. Telescopic rod; 12. Spring; 13. Connecting ring; 14. Helical rib; 15. Sliding strip; 16. Sliding groove; 17. Threaded ring groove; 18. Threaded sleeve; 19. Insertion hole. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Reference Figure 1 , Figure 3 and Figure 4 This utility model provides an embodiment of a high-temperature resistant drill rod with a built-in cooling channel, comprising a drill rod 1, a top plate 5 fixedly connected to the top side of the drill rod 1, a base plate 2 fixedly connected to the bottom side of the drill rod 1, a spring groove on the bottom side of the base plate 2, a screw 9 disposed inside the spring groove, a spiral rib 14 fixedly connected inside the drill rod 1, a connecting ring 13 fixedly connected to both the top and bottom sides of the spiral rib 14, a telescopic rod 11 disposed inside the spiral rib 14, a drill rod 6 disposed on the top side of the top plate 5, a drill bit 3 disposed on the bottom side of the base plate 2, a plurality of drill teeth 4 fixedly connected to the bottom side of the drill bit 3, a threaded groove 7 on the top side of the drill bit 3, and an abutment rod 8 fixedly connected to the bottom side of the threaded groove 7. The bottom ends of both sides of the telescopic rod 11 are provided with sliding grooves 16. The inner walls of the spiral rib 14 are fixedly connected to the left and right sides of the sliding strips 15. The outer walls of the sliding strips 15 are slidably connected to the inside of the sliding grooves 16. The bottom side of the telescopic rod 11 is fixedly connected to the top side of the receiving rod 10. The top side of the top plate 5 is provided with an extension hole. The top end of the outer wall of the telescopic rod 11 is slidably connected to the inside of the extension hole. The top side of the top plate 5 is provided with a threaded annular groove 17. The threaded annular groove 17 is threadedly connected to a threaded sleeve 18. The top side of the threaded sleeve 18 is fixedly connected to the bottom side of the drill rod 2 6. The threaded sleeve 18 is provided with an insertion hole 19. The outer walls of both drill rod 1 and drill rod 2 6 are provided with a nickel-chromium alloy plating. The inside of drill rod 1 is provided with an oil-based coolant.

[0019] Specifically, if the length of a single drill rod 1 is insufficient, the threaded sleeve 18 can be installed into the threaded annular groove 17 to achieve a fixed connection between drill rod 1 and drill rod 2 6, thereby extending the overall length of the drill rod. When installing the drill bit 3, the abutment rod 8 enters the through hole. Because the receiving rod 10 is located in the through hole, the abutment rod 8 will push the receiving rod 10 and the telescopic rod 11 upward, allowing the top of the telescopic rod 11 to enter the interior of drill rod 2 6 through the insertion hole 19, further reinforcing the connection between drill rod 1 and drill rod 2 6 and improving the strength of the connection.

[0020] Reference Figure 1 and Figure 2 The top of the screw 9 is located inside the spring groove, and multiple springs 12 are installed inside the spring groove. One end of the spring 12 is connected to the top side of the screw 9, and the other end is connected to the top side of the spring groove. Both the screw 9 and the base 2 have through holes inside, and a receiving rod 10 is slidably connected inside the through hole.

[0021] Specifically, during the installation of drill bit 3, as drill bit 3 rotates, screw 9 is gradually pulled out of spring groove and stretches spring 12. After screw 9 is installed, the stretched spring 12 continues to pull screw 9 and drill bit 3, and drill bit 3 cannot enter spring groove, making the outer thread of screw 9 fit more tightly with the inner thread of thread groove 7, effectively improving the firmness of drill bit 3 installation and ensuring the stable operation of the drill rod as a whole in high-temperature environment.

[0022] Working principle: During use, if the length of a single drill rod 1 is insufficient, the threaded sleeve 18 can be installed inside the threaded groove 17 to fix drill rod 1 and drill rod 2 6 together, thereby increasing the overall length of the drill rod. Then, when installing the drill bit 3, the abutment rod 8 will enter the through hole. Since the receiving rod 10 is located inside the through hole, the abutment rod 8 will push the receiving rod 10 and the telescopic rod 11 upward, and the top of the telescopic rod 11 will enter the interior of drill rod 2 6 through the insertion hole 19. Thus, the telescopic rod 11 can reinforce the connection between drill rod 1 and drill rod 2 6. The connection improves the strength of the connection between drill rod 1 and drill rod 6. At the same time, during the installation of drill bit 3, as drill bit 3 rotates, screw 9 is gradually pulled out of the spring groove and stretches spring 12. After screw 9 is installed, because spring 12 is stretched, spring 12 will continuously pull screw 9 and drill bit 3, and drill bit 3 cannot enter the spring groove. Thus, when spring 12 pulls screw 9, it makes the threads on the outer wall of screw 9 fit more tightly with the threads inside the thread groove 7, thereby improving the firmness of drill bit 3 installation.

[0023] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-temperature resistant drill pipe with a built-in cooling channel, characterized in that, The system includes a drill rod (1), a top plate (5) fixedly connected to the top side of the drill rod (1), a base plate (2) fixedly connected to the bottom side of the drill rod (1), a spring groove provided on the bottom side of the base plate (2), a connecting component provided inside the spring groove, a spiral rib (14) fixedly connected inside the drill rod (1), a connecting ring (13) fixedly connected to both the top and bottom sides of the spiral rib (14), a telescopic component provided inside the spiral rib (14), a drill rod (6) provided on the top side of the top plate (5), a drill bit (3) provided on the bottom side of the base plate (2), and multiple drill teeth (4) fixedly connected to the bottom side of the drill bit (3).

2. The high-temperature resistant drill pipe with built-in cooling channel according to claim 1, characterized in that, The connecting assembly includes a screw (9), the top end of which is located inside the spring groove. A plurality of springs (12) are provided inside the spring groove. One end of each spring (12) is connected to the top side of the screw (9), and the other end is connected to the top side of the spring groove.

3. A high-temperature resistant drill pipe with a built-in cooling channel according to claim 2, characterized in that: Both the screw (9) and the chassis (2) have through holes inside, and a receiving rod (10) is slidably connected inside the through hole.

4. A high-temperature resistant drill pipe with a built-in cooling channel according to claim 1, characterized in that: The top side of the drill bit (3) is provided with a threaded groove (7), and the bottom side of the threaded groove (7) is fixedly connected with an abutment rod (8).

5. A high-temperature resistant drill pipe with a built-in cooling channel according to claim 3, characterized in that, The telescopic assembly includes a telescopic rod (11), and the bottom ends of the left and right sides of the telescopic rod (11) are provided with sliding grooves (16). The left and right sides of the inner wall of the spiral rib (14) are fixedly connected with sliding strips (15). The outer wall of the sliding strips (15) is slidably connected to the inside of the sliding grooves (16). The bottom side of the telescopic rod (11) is fixedly connected to the top side of the receiving rod (10).

6. A high-temperature resistant drill pipe with a built-in cooling channel according to claim 5, characterized in that: The top side of the top plate (5) is provided with an extension hole, and the top end of the outer wall of the telescopic rod (11) is slidably connected to the inside of the extension hole.

7. A high-temperature resistant drill pipe with a built-in cooling channel according to claim 1, characterized in that: The top side of the top plate (5) is provided with a threaded annular groove (17), and a threaded sleeve (18) is threadedly connected inside the threaded annular groove (17). The top side of the threaded sleeve (18) is fixedly connected to the bottom side of the drill rod (6), and an insertion hole (19) is provided inside the threaded sleeve (18).

8. A high-temperature resistant drill pipe with a built-in cooling channel according to claim 1, characterized in that: Both drill pipe one (1) and drill pipe two (6) have a nickel-chromium alloy plating on their outer walls, and the drill pipe one (1) has an oil-based coolant inside.

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