Coal mine kilometer while drilling measuring drill pipe

Abstract

The utility model relates to the field of drill rod discloses a coal mine kilometer while drilling surveying drill rod, including two rod bodies, the right -hand member fixedly connected with the thread ring of rod body, the left -hand member of rod body is equipped with the thread groove, the thread ring is connected in the inside of thread groove, the inside both ends of rod body all are fixedly connected with a plurality of fixed rods, and the fixed joint is fixedly connected between a plurality of fixed rods of right -hand member, and the fixed ring is fixedly connected between a plurality of fixed rods of left -hand member, the inner wall of fixed ring is fixedly connected with the male joint, the fixed joint and male joint between fixedly connected with cable, the outer wall of cable is provided with protection assembly, the inside of rod body is provided with reinforcing assembly, and the outer wall of rod body is provided with wear -resisting subassembly. In the utility model, prevent cable from being damaged when rotating the drill bit, improve the protection effect to cable, and improve the strength of drill rod, make it maintain higher strength while using the lightweight design of thin wall.

Description

Technical Field

[0001] This utility model relates to the field of drill pipes, and in particular to a kilometer-long underground drilling measurement drill pipe for coal mines. Background Technology

[0002] Drill pipe is a core tool in kilometer-deep directional drilling in coal mines, playing a crucial role in transmitting power, conveying the drilling medium, and providing measurement guidance during drilling operations. In kilometer-level drilling, the measurement-while-drilling (MSD) drill pipe has a built-in communication cable that can transmit data such as the borehole's inclination and azimuth in real time, allowing operators on the surface to accurately monitor the borehole trajectory and adjust the drilling direction promptly. During operation, it transmits the drill rig's torque and pressure to the drill bit, driving it to break the rock.

[0003] However, the current drill pipe has the following defects: First, when the drill bit rotates, the internal cables are easily damaged by vibration and friction, and the existing protective measures are difficult to guarantee the stability of signal transmission; Second, when the drill pipe adopts a thin-walled and lightweight design, it is difficult to balance strength, resulting in insufficient strength, which cannot meet the high strength requirements of the drill pipe under the complex working conditions in coal mines.

[0004] In response to this technical problem, this application proposes a kilometer-long drilling measurement drill rod for underground coal mines. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a kilometer-long underground drilling measurement drill rod for coal mines. This design aims to prevent cable damage during drill bit rotation, improve cable protection, and enhance the strength of the drill rod, enabling it to maintain high strength while employing a thin-walled, lightweight design.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A kilometer-deep measurement-while-drilling drill rod for coal mines includes two rod bodies. A threaded ring is fixedly connected to the right end of each rod body, and a threaded groove is formed on the left end of each rod body. The threaded ring is threaded into the groove. Multiple fixed rods are fixedly connected to both ends of each rod body. A female connector is fixedly connected between the multiple fixed rods on the right end, and a circular ring is fixedly connected between the multiple fixed rods on the left end. A male connector is fixedly connected to the inner wall of the circular ring. A cable is fixedly connected between the female and male connectors. A protective component is provided on the outer wall of the cable to improve its protection. A reinforcing component is provided inside each rod body to increase its strength, and a wear-resistant component is provided on the outer wall of each rod body to increase its service life.

[0008] Furthermore, the protection assembly includes a sleeve fixedly connected between the female connector and the male connector, with the cable located inside the sleeve.

[0009] Furthermore, a metal spring is fitted on the outer wall of the sleeve, with one end of the metal spring connected to the left side of the female connector and the other end of the metal spring connected to the right side of the male connector.

[0010] Furthermore, the reinforcing component includes a spiral reinforcing rib fixedly connected to the interior of the rod body, a reinforcing mesh fixedly connected to the outer wall of the spiral reinforcing rib, the reinforcing mesh being located on the inner wall of the rod body, and a plurality of reinforcing rings fixedly connected to the inner wall of the rod body.

[0011] Furthermore, the outer wall of the rod is provided with a bottom layer, a middle layer is provided on one side of the bottom layer, and a surface layer is provided on one side of the middle layer.

[0012] Furthermore, the bottom layer is prepared using epoxy zinc-rich primer as raw material, the middle layer is prepared using silicone-modified polyurethane coating as raw material, and the top layer is prepared using polytetrafluoroethylene coating as raw material.

[0013] Furthermore, a sealing ring is fixedly connected to the inner wall of the threaded ring.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, a sleeve made of high-strength insulating plastic is used to protect the cable, and a metal spring with a spiral structure is used to absorb radial vibration energy, preventing the cable from directly rubbing against the inner wall of the rod, thereby preventing the cable from being damaged when the drill bit rotates and improving the protection effect of the cable.

[0016] 2. In this utility model, a three-dimensional mesh system similar to reinforced concrete is formed by spiral reinforcing ribs and reinforced mesh, and the stability of the rod body is further improved by setting reinforcing rings at intervals on the inner wall of the rod body, thereby further improving the impact resistance of the rod body and increasing the strength of the drill rod, so that it can maintain high strength while using a thin-walled lightweight design. Attached Figure Description

[0017] Figure 1 A three-dimensional view of a kilometer-long underground drilling measurement drill rod proposed in this utility model;

[0018] Figure 2 This is a schematic diagram of the female connector structure of a kilometer-long underground drilling measurement drill rod proposed in this utility model.

[0019] Figure 3 This utility model provides a structural diagram of the male connector of a kilometer-long underground drilling measurement drill rod.

[0020] Figure 4 This is a schematic diagram of the internal structure of a kilometer-long underground drilling measurement drill rod proposed in this utility model.

[0021] Figure 5 This is a schematic diagram of the casing structure of a kilometer-long underground drilling measurement drill rod proposed in this utility model.

[0022] Figure 6 This is a schematic diagram of the cable structure of a kilometer-long underground measurement-while-drilling drill rod proposed in this utility model.

[0023] Figure 7 This is a schematic diagram of the outer wall structure of a kilometer-deep drilling measurement drill rod proposed in this utility model.

[0024] Legend:

[0025] 1. Rod body; 2. Threaded ring; 3. Sealing ring; 4. Reinforcing ring; 5. Female connector; 6. Fixing rod; 7. Circular ring; 8. Male connector; 9. Threaded groove; 10. Spiral reinforcing rib; 11. Reinforcing mesh; 12. Sleeve; 13. Metal spring; 14. Cable; 15. Bottom layer; 16. Middle layer; 17. Top layer. Detailed Implementation

[0026] 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.

[0027] Reference Figures 1-3 This utility model provides an embodiment of a kilometer-deep underground drilling measurement drill rod, comprising two rod bodies 1. A threaded ring 2 is fixedly connected to the right end of the rod body 1, and a threaded groove 9 is formed on the left end of the rod body 1. The threaded ring 2 is threaded into the threaded groove 9. The two rod bodies 1 are connected together by screwing the threaded ring 2 into the threaded groove 9. The thread direction of the threaded ring 2 and the threaded groove 9 is designed to be consistent with the rotation direction of the rod body 1 to prevent the threaded ring 2 from disengaging from the threaded groove 9 due to friction during the rotation of the rod body 1, thus preventing the rod bodies 1 from separating. Multiple fixing rods 6 are fixedly connected to both the left and right ends inside the rod body 1, as shown in the figure. Figure 5 and Figure 6A female connector 5 is fixedly connected between multiple fixed rods 6 on the right end, and a ring 7 is fixedly connected between multiple fixed rods 6 on the left end. A male connector 8 is fixedly connected to the inner wall of the ring 7. A cable 14 is fixedly connected between the female connector 5 and the male connector 8. By inserting the male connector 8 into the female connector 5, the cable 14 in the two rods 1 is electrically connected, thereby enabling signal transmission. Both the male connector 8 and the female connector 5 are equipped with protective covers when not in use to protect them from damage caused by external dirt. A sleeve 12 is fixedly connected between the female connector 5 and the male connector 8. The cable 14 is located inside the sleeve 12. A metal spring 13 is fitted on the outer wall of the sleeve 12. One end of the metal spring 13 is connected to the left side of the female connector 5, and the other end of the metal spring 13 is connected to the right side of the male connector 8. The sleeve 12 is made of high-strength insulating plastic to protect the cable 14. The metal spring 13 fits tightly against the outer surface of the sleeve 12. The spiral structure can absorb radial vibration energy and prevent the cable 14 from directly rubbing against the inner wall of the rod 1.

[0028] Reference Figures 2-4 The rod body 1 has a helical reinforcing rib 10 fixedly connected inside, and a reinforcing mesh 11 fixedly connected to the outer wall of the helical reinforcing rib 10. The reinforcing mesh 11 is located on the inner wall of the rod body 1, forming a three-dimensional mesh system similar to reinforced concrete through the helical reinforcing rib 10 and the reinforcing mesh 11. When the rod body 1 is subjected to external impact, the mesh structure can quickly disperse the impact force to the helical reinforcing rib 10, avoiding local stress concentration. At the same time, the reinforcing mesh 11 itself also has a certain tensile and shear resistance, working together with the helical reinforcing rib 10 to resist external forces, significantly improving the overall strength of the rod body 1. Multiple reinforcing rings 4 are fixedly connected to the inner wall of the rod body 1. By setting reinforcing rings 4 at intervals on the inner wall of the rod body 1, the stability of the rod body 1 is further improved, thereby further improving the impact resistance of the rod body 1. (Refer to...) Figure 7 and Figure 2The outer wall of rod body 1 is provided with a base layer 15, an intermediate layer 16 is provided on one side of the base layer 15, and a surface layer 17 is provided on one side of the intermediate layer 16. The base layer 15 is made from epoxy zinc-rich primer, the intermediate layer 16 is made from silicone-modified polyurethane coating, and the surface layer 17 is made from polytetrafluoroethylene coating. A 70μm thick epoxy zinc primer with a zinc powder content of 85% is applied by spraying. Utilizing the sacrificial anode principle, the substrate of rod body 1 is preferentially protected to prevent electrochemical corrosion, while providing a rough surface for the upper coating to enhance adhesion. A 100μm thick silicone-modified polyurethane coating is sprayed. The silicone component gives the coating water repellency and weather resistance, while the polyurethane provides high elasticity and impact resistance, effectively isolating downhole moisture and corrosive liquids. A 60μm thick PTFE coating is formed by dip coating. PTFE has excellent chemical stability and can resist corrosive media such as acids, alkalis, and methane, further improving the overall corrosion resistance of rod body 1. A sealing ring 3 is fixedly connected to the inner wall of the threaded ring 2. The sealing ring 3 is used to seal the gap between the two rods 1 and improve its sealing performance.

[0029] Working principle: First, the rod body 1 is spliced ​​according to the required drill rod length. When splicing the rod body 1, the threaded ring 2 is aligned with the threaded groove 9, and then the threaded ring 2 is screwed into the threaded groove 9 to connect the two rod bodies 1 together. When the threaded ring 2 is screwed into the threaded groove 9, the male connector 8 will be inserted into the female connector 5, so that the cables 14 in the two rod bodies 1 form an electrical connection, thereby enabling signal transmission. The cable 14 is protected by a sleeve 12 made of high-strength insulating plastic, and the radial vibration energy is absorbed by a helical metal spring 13 to prevent the cable 14 from directly rubbing against the inner wall of the rod body 1, thereby preventing the cable 14 from being damaged when the drill bit rotates.

[0030] 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 coal mine kilometer measurement while drilling drill pipe, characterized in that: The device includes two rods (1). A threaded ring (2) is fixedly connected to the right end of the rod (1). A threaded groove (9) is opened at the left end of the rod (1). The threaded ring (2) is threaded into the inside of the threaded groove (9). Multiple fixed rods (6) are fixedly connected to both the left and right ends of the rod (1). A female connector (5) is fixedly connected between the multiple fixed rods (6) at the right end. A circular ring (7) is fixedly connected between the multiple fixed rods (6) at the left end. A male connector (8) is fixedly connected to the inner wall of the circular ring (7). A cable (14) is fixedly connected between the female connector (5) and the male connector (8). A protective component is provided on the outer wall of the cable (14) to improve the protection effect of the cable (14). A reinforcing component is provided inside the rod (1) to improve the strength of the rod (1). A wear-resistant component is provided on the outer wall of the rod (1) to improve the service life of the rod (1).

2. The coal mine kilometer while drilling measuring drill pipe according to claim 1, characterized in that: The protection assembly includes a sleeve (12) fixedly connected between the female connector (5) and the male connector (8), with the cable (14) located inside the sleeve (12).

3. The coal mine kilometer while drilling measuring drill pipe according to claim 2, characterized in that: A metal spring (13) is fitted on the outer wall of the sleeve (12). One end of the metal spring (13) is connected to the left side of the female connector (5), and the other end of the metal spring (13) is connected to the right side of the male connector (8).

4. The coal mine kilometer while drilling measuring drill pipe according to claim 1, characterized in that: The reinforcing component includes a spiral reinforcing rib (10) fixedly connected inside the rod (1), and a reinforcing mesh (11) fixedly connected to the outer wall of the spiral reinforcing rib (10). The reinforcing mesh (11) is located on the inner wall of the rod (1), and a plurality of reinforcing rings (4) are fixedly connected to the inner wall of the rod (1).

5. The coal mine kilometer while drilling drill pipe of claim 1, wherein: The outer wall of the rod (1) is provided with a bottom layer (15), a middle layer (16) is provided on one side of the bottom layer (15), and a top layer (17) is provided on one side of the middle layer (16).

6. A kilometer-long underground drilling measurement drill rod according to claim 5, characterized in that: The bottom layer (15) is made from epoxy zinc-rich primer, the middle layer (16) is made from silicone-modified polyurethane coating, and the top layer (17) is made from polytetrafluoroethylene coating.

7. The coal mine kilometer while drilling drill pipe of claim 6, wherein: A sealing ring (3) is fixedly connected to the inner wall of the threaded ring (2).

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