A through-cable drill pipe

Abstract

The utility model relates to a kind of through cable drill rod, comprising: hollow and both ends open drill rod body, its both ends are provided with first body connector and second body connector respectively, insulating tube is equipped in the drill rod body, the both ends of insulating tube are provided with first insulation connector and second insulation connector respectively, electrically-conductive column is equipped in the insulating tube, the both ends of the electrically-conductive column are provided with first electrically-conductive connector and second electrically-conductive connector, when the first electrically-conductive connector and / or the second electrically-conductive connector radial elastic deformation occurs when adaptive connection. First electrically-conductive connector and / or second electrically-conductive connector only radial elastic deformation occurs, and elastic adaptive structure is not easy to fail. Simultaneously, wider fluid passage is obtained, and slag is more smooth, and simultaneously, the design allowance of first body connector and second body connector is increased, and deeper screw thread can be designed, so that the connecting surface of first body connector and second body connector is not easy to fail.

Description

Technical Field

[0001] This utility model relates to the technical field of cable-through drill rods, and more particularly to a cable-through drill rod. Background Technology

[0002] Cable-through drill pipe is a special type of drill pipe used in directional drilling. It not only has the function of ordinary drill pipes to transmit torque and axial force to achieve drilling, but also can establish a current transmission channel from the bottom of the well to the surface system.

[0003] like Figure 1 As shown, in traditional cable-connecting drill rods, a compression spring 01 is embedded in the connector. After two cable-connecting drill rods are screwed together, the spring is compressed within the connector, allowing current to be smoothly conducted through the spring to the next cable-connecting drill rod. This traditional cable-connecting drill rod has two problems. First, when the two cable-connecting drill rods are in pre-contact, the spring is already engaged with the conductive female connector 02. During the tightening of the cable-connecting drill rod, the fixed end 012 of the spring remains stationary, but the movable end 011 of the spring, engaged with the conductive female connector 02, rotates and undergoes radial expansion and axial compression. During the disassembly of the cable-connecting drill rod, the fixed end 012 of the spring remains stationary, while the movable end 011, still engaged within the conductive female connector 02, rotates and undergoes radial contraction and axial stretching. After repeated disassembly and assembly, the spring will... Figure 2 The deformation shown leads to failure, resulting in a short spring lifespan and high maintenance costs. Secondly, in order to provide a reliable current transmission line and maintain the compression effect on the compression spring, a relatively thick plastic connector is used. However, the outer diameter of the cable drill rod is a standard value, so the external thread of the cable drill rod will be relatively thin. After repeated disassembly and assembly, the external thread of the cable drill rod will also fail, resulting in a limited service life. Utility Model Content

[0004] Therefore, there is a need to provide a cable-through drill pipe to solve the problems of high maintenance costs and limited service life of traditional cable-through drill pipes that use springs.

[0005] To achieve the above objectives, the inventors provide a cable-carrying drill rod, comprising:

[0006] The drill pipe body is hollow and open at both ends, with a first body connector and a second body connector respectively provided at both ends, and the first body connector and the second body connector can be adapted to be connected.

[0007] An insulating tube is sleeved inside the drill rod body. The insulating tube and the drill rod body are supported by a positioning component, and a fluid channel is formed between the outer wall of the insulating tube and the inner wall of the drill rod body. A first insulating connector and a second insulating connector are respectively provided at both ends of the insulating tube. The first insulating connector is located at the first body connector, and the second insulating connector is located at the second body connector. The first insulating connector and the second insulating connector can be adapted to be connected.

[0008] The conductive post is sleeved inside the insulating tube. A first conductive connector and a second conductive connector are respectively provided at both ends of the conductive post. The first conductive connector is located inside the first insulating connector, and the second conductive connector is located inside the second insulating connector. The first conductive connector and the second conductive connector can be adapted to be connected, and when adapted to be connected, the first conductive connector and / or the second conductive connector will undergo radial elastic deformation.

[0009] Furthermore, the first conductive connector is a cylindrical structure and includes at least one elastic arm that extends along its length and is radially deformable. The second conductive connector is a tubular structure. When the first conductive connector and the second conductive connector are adapted to each other, the elastic arm elastically deforms and presses itself into the second conductive connector.

[0010] Furthermore, the first conductive connector includes multiple elastic arms arranged in a circumferential array, and a spacing is provided between each adjacent elastic arm.

[0011] Furthermore, the spacing between each of the adjacent elastic arms is 0.05-0.1 times the diameter of the first conductive connector.

[0012] Furthermore, the first conductive connector is a cylindrical structure, the second conductive connector is a tubular structure, and the second conductive connector is made of an elastic material.

[0013] Furthermore, the positioning element includes a first positioning element and / or a second positioning element;

[0014] The first positioning element includes an inner ring and an outer ring, wherein the inner ring is located inside the outer ring and the two are connected at intervals by multiple connecting pieces or connecting posts arranged in a circumferential array.

[0015] The second positioning element includes an inner tube and multiple positioning element support ridges. The positioning element support ridges extend along the axial direction of the inner tube and are fixed to the outer wall of the inner tube. The multiple positioning element support ridges are evenly distributed outside the inner tube.

[0016] Furthermore, there are two first positioning elements, one of which is located at the connection between the first insulating connector and the insulating tube, and the other is located at the connection between the second insulating connector and the insulating tube.

[0017] Furthermore, a first sealing element is provided at the mating connection between the first insulating connector and the second insulating connector.

[0018] Furthermore, the conductive post is fitted with a first washer and a second washer. The first washer is disposed at the connection between the first insulating connector and the insulating tube, and the second washer is disposed at the connection between the second insulating connector and the insulating tube.

[0019] Furthermore, the first body connector, the first insulating connector, and the first conductive connector are alternating male and female connector structures, and the second body connector, the second insulating connector, and the second conductive connector are also alternating male and female connector structures.

[0020] Unlike existing technologies, the above technical solution has the following advantages: During use, as the first and second body connectors of the cable-connecting drill rod in this application are fitted together, the first conductive connector and / or the second conductive connector are gradually compressed and deformed radially as the screwing depth increases, making them fit together more tightly and forming a reliable current transmission path. During disassembly, as the first body connector separates from the second body connector, the first conductive connector and / or the second conductive connector gradually return to their original shape under the action of elastic force. The first conductive connector and / or the second conductive connector only undergo elastic deformation in the radial direction and do not deform along the axial direction, thus the elastic fitting structure of the first and second conductive connectors is not prone to failure. Furthermore, this application eliminates the need for axial compression of the first and second conductive connectors, allowing for a thinner design of the first and second insulating connectors. This results in a wider fluid channel, smoother slag discharge, and increased design margin for the first and second body connectors, enabling the design of deeper threads and reducing the likelihood of failure at the connection surfaces. Attached Figure Description

[0021] Figure 1 This is a cross-sectional view of a conventional cable drill rod that uses a compression spring in the background art;

[0022] Figure 2 This is a schematic diagram of the failure of the spring in an existing cable-stayed drill rod in the background art;

[0023] Figure 3 This is a schematic diagram of the cable-carrying drill rod used in this application;

[0024] Figure 4 This is a cross-sectional view of the first body connecting head end of the cable-connecting drill rod in this application;

[0025] Figure 5 This is a cross-sectional view of the second body connection head end of the cable-connecting drill rod in this application;

[0026] Figure 6 This is a perspective view of the first conductive connector in this application;

[0027] Figure 7 This is a side view of the first conductive connector in this application;

[0028] Figure 8 This is another structural diagram of the first conductive connector in this application;

[0029] Figure 9 This is a schematic diagram of the structure of the first positioning element in this application;

[0030] Figure 10 This is a schematic diagram of the structure of the second positioning element in this application;

[0031] Figure 11 This is a schematic diagram of the docking of the first body connector and the second body connector in this application.

[0032] Explanation of reference numerals in the attached figures:

[0033] 01. Compression spring;

[0034] 011. Spring movable end;

[0035] 012. Spring fixing end;

[0036] 02. Conductive female connector;

[0037] X, radial direction;

[0038] Y-axis;

[0039] 11. Drill pipe body;

[0040] 12. First body connector;

[0041] 13. Second body connector;

[0042] 21. Insulating tube;

[0043] 22. First insulating connector;

[0044] 23. Second insulating connector;

[0045] 31. Conductive column;

[0046] 32. First conductive connector;

[0047] 321. Flexible arm;

[0048] 322. First conductive connector body;

[0049] 33. Second conductive connector;

[0050] 41. First positioning component;

[0051] 411. Inner ring of the positioning component;

[0052] 412. Outer ring of positioning component;

[0053] 413. Connecting piece;

[0054] 42. Second positioning component;

[0055] 421. Inner tube of positioning component;

[0056] 422. Positioning component support ridge;

[0057] 5. Fluid channels;

[0058] 61. First sealing element;

[0059] 62. First washer;

[0060] 63. Second washer;

[0061] 7. Pipe clamps. Detailed Implementation

[0062] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this application in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this application and are therefore intended to limit the scope of protection of this application.

[0063] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0064] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0065] In the description of this application, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " in this document generally indicates that the preceding and following objects have an "or" logical relationship.

[0066] In this application, terms such as “first” and “second” are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy or order relationship between these entities or operations.

[0067] Without further limitations, the use of terms such as “comprising,” “including,” “having,” or other similar open-ended expressions in this application is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a list of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0068] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments in this application, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0069] In the description of the embodiments of this application, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the purpose of describing the specific embodiments of this application or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0070] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this application, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral arrangement; it can be a direct connection or an indirect connection through an intermediate medium; it can be a relationship of two components combined together, an interaction relationship between two components, or a connection within two structures. Those skilled in the art to which this application pertains can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0071] Please see Figure 3-7 This embodiment of a cable-carrying drill rod includes:

[0072] The drill pipe body 11 is hollow and open at both ends, with a first body connector 12 and a second body connector 13 respectively provided at both ends. The first body connector 12 and the second body connector 13 can be adapted to be connected.

[0073] An insulating tube 21 is sleeved inside the drill rod body 11. The insulating tube 21 and the drill rod body 11 are supported by a positioning member, and a fluid channel 5 is formed between the outer wall of the insulating tube 21 and the inner wall of the drill rod body 11. A first insulating connector 22 and a second insulating connector 23 are respectively provided at both ends of the insulating tube 21. The first insulating connector 22 is located at the first body connector 12, and the second insulating connector 23 is located at the second body connector 13. The first insulating connector 22 and the second insulating connector 23 can be adapted to be connected.

[0074] The conductive post 31 is sleeved inside the insulating tube 21. A first conductive connector 32 and a second conductive connector 33 are respectively provided at both ends of the conductive post 31. The first conductive connector 32 is located inside the first insulating connector 22, and the second conductive connector 33 is located inside the second insulating connector 23. The first conductive connector 32 and the second conductive connector 33 can be adapted to be connected, and when adapted to be connected, the first conductive connector 32 and / or the second conductive connector 33 will undergo radial elastic deformation.

[0075] It should be noted that radial X refers to the direction perpendicular to the center axis of the cable-connecting drill pipe.

[0076] The cross-sections of the first body connector 12, the second body connector 13, the first insulating connector 22, the second insulating connector 23, the first conductive connector 32, and the second conductive connector 33 are configured to be circular, so that when the first body connector 12 and the second body connector 13 are screwed together, the first insulating connector 22 and the second insulating connector 23, and the first conductive connector 32 and the second conductive connector 33 can rotate relative to each other.

[0077] The first body connector 12 and the second body connector 13 can be adapted to be connected in that the end of the first body connector 12 away from the drill rod body 11 can be adapted to be connected to the end of the second body connector 13 away from the drill rod body 11; the first insulating connector 22 and the second insulating connector 23 can be adapted to be connected in that the end of the first insulating connector 22 away from the insulating rod can be adapted to be connected to the end of the second insulating connector 23 away from the insulating rod; the first conductive connector 32 and the second conductive connector 33 can be adapted to be connected in that the end of the first conductive connector 32 away from the conductive post 31 can be adapted to be connected to the end of the second conductive connector 33 away from the conductive post 31.

[0078] The first body connector 12 and the second body connector 13 are fixed to the drill pipe body 11 by welding. The first insulating connector 22 and the second insulating connector 23 are typically detachably connected to the insulating tube 21. The first conductive connector 32 and the second conductive connector 33 are also typically detachably connected to the conductive post 31. The specific detachable connection relationships can be referred to the installation of existing cable-stayed drill pipes, and will not be elaborated in this application.

[0079] Radial elastic deformation of the first conductive connector 32 and / or the second conductive connector 33 means that the first conductive connector 32 undergoes elastic deformation, but the second conductive connector 33 does not, or the first conductive connector 32 does not undergo elastic deformation, but the second conductive connector 33 does, or both undergo elastic deformation. This radial elastic deformation allows the first conductive connector 32 and / or the second conductive connector 33 to make closer contact, reducing the resistance to current flow and improving current conduction.

[0080] like Figure 11The first body connector 12 and the second body connector 13 are generally designed as a screw-in male and female connector structure, while the first insulating connector 22 and the second insulating connector 23, the first conductive connector 32 and the second conductive connector 33 are usually designed as a plug-in male and female connector structure. For example, the first body connector 12 is a male connector with external threads, and the second body connector 13 is a female connector with internal threads. In use, when the first body connector 12 (male connector) of one cable drill rod is screwed into the second body connector 13 (female connector) of another cable drill rod, the first conductive insulating connector gradually adapts to the second conductive insulating connector, and the first conductive connector 32 gradually adapts to the second conductive connector 33. Conversely, when the first body connector 12 is detached from the second body connector 13, the first conductive insulating connector gradually separates from the second conductive insulating connector, and the first conductive connector 32 gradually separates from the second conductive connector 33. During the disassembly and assembly process, the first conductive connector 32 and / or the second conductive connector 33 undergoes elastic deformation in the radial direction, while the first conductive connector 32 and / or the second conductive connector 33 does not deform in the axial direction during the disassembly and assembly process, which reduces the risk of failure and extends the service life of the cable-connecting drill rod.

[0081] During drilling, waste material is discharged from the borehole through the fluid channel 5 between the outer wall of the insulating tube 21 and the inner wall of the drill rod body 11. The insulating tube 21 is typically centered on the drill rod body 11 using a positioning element, ensuring uniform gaps between the outer wall of the insulating tube 21 and the inner wall of the drill rod body 11, thus facilitating smoother waste discharge. By designing the structure of the cable-driven drill rod in this application, the inventors have eliminated the compression spring 01, replacing it with a radially deformable first conductive connector 32 and / or second conductive connector 33. This reduces the stringent connection strength requirements between the first insulating connector 22 and the second insulating connector 23, allowing for a reduction in their thickness and resulting in a larger fluid channel 5. Furthermore, the reduced internal dimensions allow for a larger thickness margin for the first body connector 12 and the second body connector 13, enabling the design of thicker threads. This also reduces the likelihood of stripping or failure of the threads on the first body connector 12 and the second body connector 13 during repeated assembly and disassembly.

[0082] During use, as the first body connector 12 and the second body connector 13 are fitted together, the first conductive connector 32 and / or the second conductive connector 33 are gradually compressed and deformed radially as the screwing depth increases, making them fit together more tightly and forming a reliable current transmission path. During disassembly, as the first body connector 12 separates from the second body connector 13, the first conductive connector 32 and / or the second conductive connector 33 gradually return to their original shape under the action of elastic force. The first conductive connector 32 and / or the second conductive connector 33 only undergo elastic deformation in the radial direction and do not deform along the axial direction. Therefore, the elastic fitting structure of the first conductive connector 32 and the second conductive connector 33 is not prone to failure. Furthermore, in this application, there is no need to press the first conductive connector 32 and the second conductive connector 33 in the axial direction. Therefore, the first insulating connector 22 and the second insulating connector 23 can be designed to be thinner, thereby obtaining a wider fluid channel 5 and smoother slag discharge. At the same time, it also increases the design margin of the first body connector 12 and the second body connector 13, and can design deeper threads, making the connection surface of the first body connector 12 and the second body connector 13 less prone to failure.

[0083] like Figure 6-8 As shown, in some embodiments, the first conductive connector 32 is a cylindrical structure and includes at least one elastic arm 321 extending along its length and capable of radial deformation. The second conductive connector 33 is a tubular structure. When the first conductive connector 32 and the second conductive connector 33 are fitted together, the elastic arm 321 elastically deforms and presses itself into the second conductive connector 33. Figure 8 As shown in the figure, in this embodiment, the specific structure of the first conductive connector 32 includes a first conductive connector body 322 and an elastic arm 321. Both the first conductive connector body 322 and the elastic arm 321 extend along the axial direction of the conductive post 31. A certain gap is provided between the elastic arm 321 and the first conductive connector body 322, so that when the first conductive connector 32 is inserted into the second conductive connector 33, the elastic arm 321 will be squeezed towards the first conductive connector body 322 and undergo elastic deformation. Under the action of the elastic force of the elastic arm 321, the first conductive connector 32 fits tightly in the second conductive connector 33, thereby achieving a high-efficiency current transmission effect. The first conductive connector body 322 and the elastic arm 321 can be designed to be of equal length. The elastic arm 321 can protrude outward away from the first conductive connector body 322 to provide a larger compression space.

[0084] like Figure 6-7As shown, in some embodiments, the first conductive connector 32 includes multiple elastic arms 321 arranged in a circumferential array, with a gap between adjacent elastic arms 321. In this embodiment, all elastic arms 321 are the same in shape and size. Taking four elastic arms 321 as an example, the cross-section of each elastic arm 321 is a quarter circle. When the first conductive connector 32 is inserted into the second conductive connector 33, the elastic arms 321 of the first conductive connector 32 move closer together, and under the action of elastic force, each elastic arm 321 is tightly attached to the inner wall of the second conductive connector 33. Specifically, during the manufacturing of the first conductive connector 32, two grooves can be cut horizontally and vertically on the cylindrical first conductive connector 32 to separate it into four evenly spaced elastic arms 321. The structure of the first conductive connector 32 in this embodiment can undergo radial elastic deformation, and after the first conductive connector 32 is inserted into the second conductive connector 33, the contact area between the two is large, achieving a tight fit and higher current conduction efficiency.

[0085] In some more preferred embodiments, the spacing between each of the adjacent elastic arms 321 is 0.05-0.1 times the diameter of the first conductive connector 32.

[0086] In some embodiments, the first conductive connector 32 is a cylindrical structure, and the second conductive connector 33 is a tubular structure, and the second conductive connector 33 is made of an elastic material. Specifically, the second conductive connector 33 can be a tubular structure with an axially extending groove on the tube wall. After the first conductive connector 32 is inserted into the second conductive connector 33, the second conductive connector 33 is stretched and held tightly against the outer wall of the first conductive connector 32. When the first conductive connector 32 is pulled out, the second conductive connector 33 returns to its original shape. The second conductive connector 33 is a sleeve made of a metal material with a certain degree of elasticity.

[0087] In some embodiments, the positioning element includes a first positioning element 41 and / or a second positioning element 42;

[0088] The first positioning element 41 includes an inner positioning element ring 411 and an outer positioning element ring 412. The inner positioning element ring 411 is located inside the outer positioning element ring 412, and the two are connected at intervals by multiple connecting pieces 413 or connecting posts arranged in a circumferential array.

[0089] The second positioning element 42 includes a positioning element inner tube 421 and multiple positioning element support ridges 422. The positioning element support ridges 422 extend along the axial direction of the positioning element inner tube 421 and are fixed to the outer wall of the positioning element inner tube 421. The multiple positioning element support ridges 422 are evenly distributed on the outside of the positioning element inner tube 421.

[0090] The first positioning element 41 and the second positioning element 42 can be selectively disposed between the insulating tube 21 and the drill rod body 11, or both the first positioning element 41 and the second positioning element 42 can be disposed between the insulating tube 21 and the drill rod body 11. When the length of the cable-carrying drill rod is relatively long, the first positioning element 41 and the second positioning element 42 can be disposed between the insulating tube 21 and the drill rod body 11 to enhance the stability between the insulating tube 21 and the drill rod body 11 and prevent the insulating tube 21 from shaking inside the drill rod body 11. When the length of the cable-carrying drill rod is relatively short, either the first positioning element 41 or the second positioning element 42 can be disposed between the insulating tube 21 and the drill rod body 11.

[0091] like Figure 9 As shown, in the structure of the first positioning member 41, the inner ring 411 and the outer ring 412 of the positioning member have the same height. The outer wall of the inner ring 411 and the inner wall of the outer ring 412 are equidistantly arranged. The first positioning member 41 is sleeved inside the drill pipe body 11. The distance between the inner ring 411 and the outer ring 412 of the positioning member determines the cross-sectional size of the fluid channel 5. Preferably, two connecting pieces 413 or connecting columns are symmetrically arranged between the inner ring 411 and the outer ring 412 of the positioning member, so that the inner ring 411 and the outer ring 412 of the positioning member form a stable connection relationship, while having a larger cross-section of the fluid channel 5. In the embodiment, the connecting piece 413 refers to a thin strip structure that is longitudinally arranged between the inner ring 411 and the outer ring 412 of the positioning member, which can occupy less fluid channel 5 size. In the embodiment, the connecting column refers to a columnar structure with a circular, square, elliptical or other shapes of cross-section.

[0092] like Figure 10 As shown, in the structure of the second positioning member 42, the inner tube 421 and the supporting ridge 422 of the positioning member are of equal length, and the cross-section of the supporting ridge 422 is a thin strip. The second positioning member 42 can be made of materials such as rubber or silicone. While supporting the insulating tube 21 and the drill rod body 11, the second positioning member 42 has a large frictional force with the outer wall of the insulating tube 21 and the inner wall of the drill rod body 11, which can prevent the insulating tube 21 from easily detaching from the drill rod body 11. In order to further prevent the second positioning member 42 from being washed away by the water flow, a pipe clamp 7 can be installed on the second positioning member 42 to clamp the second positioning member 42 to the outside of the insulating tube 21.

[0093] like Figure 4 , Figure 5As shown, in some embodiments, there are two first positioning elements 41. One first positioning element 41 is disposed at the connection between the first insulating connector 22 and the insulating tube 21, and the other first positioning element 41 is disposed at the connection between the second insulating connector 23 and the insulating tube 21. When the first insulating connector 22 is connected to the insulating tube 21, the first positioning element 41 can be fitted onto the fitting point between the first insulating connector 22 and the insulating tube 21. Similarly, when the second insulating connector 23 is connected to the insulating tube 21, the second positioning element 42 can be fitted onto the fitting point between the second insulating connector 23 and the insulating tube 21. This supports the insulating tube 21 and the drill rod body 11, forming a stable fluid channel 5 between them.

[0094] like Figure 4 , Figure 5 As shown, in some embodiments, a first sealing element 61 is provided at the mating connection between the first insulating connector 22 and the second insulating connector 23. Specifically, the first sealing element 61 can be an O-ring, and multiple first sealing elements 61 can be provided and arranged sequentially at the mating connection between the first insulating connector 22 and the second insulating connector 23. The end of the first insulating connector 22 away from the plastic tube has a columnar structure, and the end of the second insulating connector 23 away from the plastic tube has a cylindrical structure. The first sealing element 61 is sleeved on the outer wall of the first insulating connector 22. When the first insulating connector 22 is inserted into the second insulating connector 23, the first sealing element 61 seals both, preventing water in the fluid channel 5 from entering the plastic tube.

[0095] like Figure 4 , Figure 5 As shown, in some embodiments, the conductive post 31 is fitted with a first washer 62 and a second washer 63. The first washer 62 is correspondingly disposed at the connection between the first insulating connector 22 and the insulating tube 21, and the second washer 63 is correspondingly disposed at the connection between the second insulating connector 23 and the insulating tube 21. The first washer 62 and the second washer 63 can prevent the conductive post 31 from shaking inside the plastic tube, thus improving the structural stability of the cable drill rod. Furthermore, the first washer 62 can seal the connection between the first insulating connector 22 and the insulating tube 21, preventing water from outside the plastic tube from entering it. Similarly, the second washer 63 can seal the connection between the second connector and the insulating tube 21, preventing water from outside the plastic tube from entering it. Of course, to enhance the above effects, multiple first washers 62 and multiple second washers 63 can be provided. In addition, since the first washer 62 is located at the connection between the first insulating connector 22 and the insulating tube 21, and the second washer 63 is located at the connection between the second insulating connector 23 and the insulating tube 21, the first washer 62 and the second washer 63 also play an axial buffering role when the two cable drill rods are connected.

[0096] like Figure 4 , Figure 5 , Figure 11 As shown, in some embodiments, the first body connector 12, the first insulating connector 22, and the first conductive connector 32 are alternating male and female connector structures, and the second body connector 13, the second insulating connector 23, and the second conductive connector 33 are also alternating male and female connector structures. For example, the first body connector 12 is a male connector structure, the first insulating connector 22 is a female connector structure, and the first conductive connector 32 is a male connector structure, and so on, alternatingly; correspondingly, the second body connector 13 is a female connector structure, the second insulating connector 23 is a male connector structure, and the second conductive connector 33 is a female connector structure, and so on, alternatingly. This alternating male and female connector structure allows for a more compact connection structure at the cable drill rod, facilitating the acquisition of a larger fluid channel 5.

[0097] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this application, this should not limit the scope of patent protection of this application. Any technical solutions that are based on the essential concept of this application and utilize the content described in the text and drawings of this application, resulting in equivalent structural or procedural substitutions or modifications, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this application.

Claims

1. A cable-carrying drill rod, characterized in that, include: The drill pipe body is hollow and open at both ends, with a first body connector and a second body connector respectively provided at both ends, and the first body connector and the second body connector can be adapted to be connected. An insulating tube is sleeved inside the drill rod body. The insulating tube and the drill rod body are supported by a positioning component, and a fluid channel is formed between the outer wall of the insulating tube and the inner wall of the drill rod body. A first insulating connector and a second insulating connector are respectively provided at both ends of the insulating tube. The first insulating connector is located at the first body connector, and the second insulating connector is located at the second body connector. The first insulating connector and the second insulating connector can be adapted to be connected. The conductive post is sleeved inside the insulating tube. A first conductive connector and a second conductive connector are respectively provided at both ends of the conductive post. The first conductive connector is located inside the first insulating connector, and the second conductive connector is located inside the second insulating connector. The first conductive connector and the second conductive connector can be adapted to be connected, and when adapted to be connected, the first conductive connector and / or the second conductive connector will undergo radial elastic deformation.

2. The cable-carrying drill rod according to claim 1, characterized in that: The first conductive connector is a cylindrical structure and includes at least one elastic arm that extends along its length and is radially deformable. The second conductive connector is a tubular structure. When the first conductive connector and the second conductive connector are fitted together, the elastic arm elastically deforms and presses itself into the second conductive connector.

3. The cable-carrying drill rod according to claim 2, characterized in that: The first conductive connector includes multiple elastic arms arranged in a circumferential array, and there is a gap between each adjacent elastic arm.

4. The cable-carrying drill rod according to claim 3, characterized in that: The spacing between each of the adjacent elastic arms is 0.05-0.1 times the diameter of the first conductive connector.

5. The cable-carrying drill rod according to claim 1, characterized in that: The first conductive connector is a cylindrical structure, the second conductive connector is a tubular structure, and the second conductive connector is made of an elastic material.

6. The cable-carrying drill rod according to claim 1, characterized in that: The positioning element includes a first positioning element and / or a second positioning element; The first positioning element includes an inner ring and an outer ring, wherein the inner ring is located inside the outer ring and the two are connected at intervals by multiple connecting pieces or connecting posts arranged in a circumferential array. The second positioning element includes an inner tube and multiple positioning element support ridges. The positioning element support ridges extend along the axial direction of the inner tube and are fixed to the outer wall of the inner tube. The multiple positioning element support ridges are evenly distributed outside the inner tube.

7. The cable-carrying drill rod according to claim 6, characterized in that: There are two first positioning elements, one of which is located at the connection between the first insulating connector and the insulating tube, and the other is located at the connection between the second insulating connector and the insulating tube.

8. The cable-carrying drill rod according to claim 1, characterized in that: A first sealing element is provided at the mating connection between the first insulating connector and the second insulating connector.

9. The cable-carrying drill rod according to claim 1, characterized in that: The conductive post is fitted with a first washer and a second washer. The first washer is disposed at the connection between the first insulating connector and the insulating tube, and the second washer is disposed at the connection between the second insulating connector and the insulating tube.

10. The cable-carrying drill rod according to claim 1, characterized in that: The first body connector, the first insulating connector, and the first conductive connector are alternating male and female connector structures, and the second body connector, the second insulating connector, and the second conductive connector are also alternating male and female connector structures.

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