Drill rod joint thread structure

Abstract

The utility model relates to the technical field of drill rod joints, and discloses a drill rod joint thread structure which comprises an up-down adjusting nut structure, an up-down threaded rod structure is arranged at the bottom of the up-down adjusting nut structure, and a joint structure is arranged at the bottom of the up-down threaded rod structure. The up-down adjusting nut structure comprises an upper adjusting nut, an upper threaded rod is arranged at the bottom of the upper adjusting nut, the bottom of the upper threaded rod is in threaded connection with a lower adjusting nut, and a lower threaded rod is arranged at the bottom of the lower adjusting nut. According to the threaded structure of the drill rod joint, through the use of the joint structure, a device is further reinforced and fixed by the joint structure while being fixed through threads, so that the situation that the joint is easy to loosen to cause connection failure under the severe conditions of impact, vibration and the like of the joint structure, and consequently drilling operation interruption or safety accidents are caused is avoided; the connection reliability of the device is greatly enhanced, and the device is more stable.

Description

Technical Field

[0001] The utility model relates to the technical field of drill rod joints, in particular to a drill rod joint thread structure. Background Art

[0002] The drill pipe joint is a component of the drill pipe. Its function is to connect the various parts of the drill pipe so that the drill pipe can successfully complete the drilling operation. The drill pipe joint is an indispensable and important part of the drilling operation. Its design and manufacturing need to take into account many factors to ensure the smooth progress and safety of the drilling operation.

[0003] Existing threaded drill pipe joints are prone to loosening, especially under harsh conditions such as impact and vibration, and are more likely to fail, resulting in interruption of drilling operations or safety accidents; in addition, since the drilling fluid contains corrosive substances and impurities such as sand particles, it is easy to cause corrosion and wear on the threads of the drill pipe joint, reducing the connection performance and service life. Therefore, the utility model provides a thread structure of a drill pipe joint. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a drill pipe joint thread structure, which has the advantages of more reliable connection and avoidance of wear caused by debris, and solves the problem that the threaded drill pipe joint is easy to loosen and is worn by debris.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned purpose of more reliable connection and avoid wear caused by debris, the utility model provides the following technical solutions:

[0008] A drill pipe joint thread structure, comprising an upper and lower adjusting nut structure, an upper and lower threaded rod structure is arranged at the bottom of the upper and lower adjusting nut structure, and a joint structure is arranged at the bottom of the upper and lower threaded rod structure;

[0009] The upper and lower adjusting nut structure comprises an upper adjusting nut, an upper threaded rod is provided at the bottom of the upper adjusting nut, a lower adjusting nut is threadedly connected to the bottom of the upper threaded rod, a lower threaded rod is provided at the bottom of the lower adjusting nut, bolt holes are provided on the right sides of the upper adjusting nut and the lower adjusting nut, bolts are threadedly connected to the right sides of the bolt holes, and joints are provided at the bottoms of the upper threaded rod and the lower threaded rod;

[0010] The upper and lower threaded rod structure comprises threaded columns located at the bottom of the upper threaded rod and the lower threaded rod, and sealing rings are provided at the connection between the upper threaded rod, the lower threaded rod and the threaded columns.

[0011] As a preferred technical solution of the utility model, the joint structure includes a joint, a fixer is provided inside the joint, a support plate is provided in the middle of the fixer, springs are provided on the left and right sides of the support plate, a spring column is provided inside the spring, a fixing block is provided at the other end of the spring column, and a bolt groove is provided at the bottom of the fixer.

[0012] As a preferred technical solution of the utility model, the inner walls of the upper adjusting nut and the lower adjusting nut are provided with joint threads opposite to the threaded column, the length of the joint threads is greater than the threaded column, and the threaded column threads are connected to the joint threads.

[0013] As a preferred technical solution of the utility model, the fixer is in a transverse cylindrical shape, a certain gap is left between the fixer and the lower adjusting nut, and a certain gap is also provided on the left and right sides of the bolt slot, and the gap is connected to the bolt hole.

[0014] As a preferred technical solution of the utility model, the upper adjusting nut and the lower adjusting nut are cylindrical and have circular grooves inside, the upper threaded rod and the lower threaded rod are cylindrical and have diameters slightly smaller than the circular grooves of the upper adjusting nut and the lower adjusting nut, and the bolt passes through the bolt hole and is threadedly connected to the bolt groove.

[0015] As a preferred technical solution of the utility model, the support plate is fixed at the inner center line of the fixer, the spring wraps the spring column, the spring column is fixedly connected to the support plate, and the fixing block has a certain degree of softness.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the utility model provides a drill pipe joint thread structure having the following features:

[0018] Beneficial effects:

[0019] 1. The threaded structure of the drill pipe joint, through the use of the joint structure, enables the device to be fixed by the thread and further reinforced by the joint structure, thereby avoiding the joint structure being easily loosened and causing connection failure under harsh conditions such as impact and vibration, which may lead to interruption of drilling operations or safety accidents, greatly enhancing the reliability of the connection of the device and making the device more stable.

[0020] 2. The thread structure of the drill pipe joint can isolate the entry of impurities such as sand particles through the use of sealing rings, thereby avoiding corrosion and wear of the joint threads by impurities such as sand particles. At the same time, the use of bolt holes can help discharge impurities such as sand particles that enter the interior, thereby increasing the service life of the joint threads. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1It is a schematic diagram of the structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0023] Figure 3 This is a schematic diagram of the joint structure of the utility model.

[0024] In the figure: 1. upper adjusting nut; 2. upper threaded rod; 3. lower adjusting nut; 4. lower threaded rod; 5. bolt hole; 6. bolt; 7. joint; 8. threaded column; 9. sealing ring; 10. retainer; 11. support plate; 12. spring; 13. spring column; 14. fixing block; 15. bolt groove; 16. joint thread. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] See also Figure 1-3 , a drill pipe joint thread structure, including an upper and lower adjusting nut structure, an upper and lower threaded rod structure is arranged at the bottom of the upper and lower adjusting nut structure, and a joint structure is arranged at the bottom of the upper and lower threaded rod structure;

[0029] The upper and lower adjusting nut structure comprises an upper adjusting nut 1, an upper threaded rod 2 is provided at the bottom of the upper adjusting nut 1, a lower adjusting nut 3 is threadedly connected to the bottom of the upper threaded rod 2, a lower threaded rod 4 is provided at the bottom of the lower adjusting nut 3, bolt holes 5 are provided on the right sides of the upper adjusting nut 1 and the lower adjusting nut 3, a bolt 6 is threadedly connected to the right side of the bolt hole 5, and a joint 7 is provided at the bottom of the upper threaded rod 2 and the lower threaded rod 4;

[0030] The upper and lower threaded rod structure includes a threaded column 8 located at the bottom of the upper threaded rod 2 and the lower threaded rod 4 , and a sealing ring 9 is provided at the connection between the upper threaded rod 2 and the lower threaded rod 4 and the threaded column 8 .

[0031] In this embodiment, the joint structure includes a joint 7, a fixer 10 is provided inside the joint 7, and the fixer 10 is used to further strengthen the threaded connection of the fixed joint; a support plate 11 is provided in the middle of the fixer 10, and the support plate 11 is used to support the pressure from the left and right sides; springs 12 are provided on the left and right sides of the support plate 11, and the spring 12 is used to release the pressure on the side close to the lower adjusting nut 3; a spring column 13 is provided inside the spring 12, and the spring column 13 is used to fix the position of the spring 12 to prevent the spring 12 from excessive displacement; a fixing block 14 is provided at the other end of the spring column 13, and the fixing block 14 is used to be fixed with the lower adjusting nut 3; a bolt groove 15 is provided at the bottom of the fixer 10, and the bolt groove 15 is used to insert the bolt 6 for reinforcement and fixation.

[0032] The support plate 11 is fixed at the inner center line of the fixer 10, and the spring 12 wraps the spring column 13. Wrapping the spring column 13 facilitates the spring column 13 to fix the position of the spring 12 and avoid excessive deviation of the spring 12; the spring column 13 is fixedly connected to the support plate 11, and the movement of the spring column 13 drives the movement of the support plate 11; the fixing block 14 has a certain degree of softness, which can ensure stable fixation while avoiding damage to the lower adjusting nut 3.

[0033] In this embodiment, the fixer 10 is in a transverse cylindrical shape, and a certain gap is left between the fixer 10 and the lower adjusting nut 3. A certain gap is also provided on the left and right sides of the bolt groove 15. The gap facilitates impurities such as sand to flow out of the lower adjusting nut 3. The gap is connected to the bolt hole 5, and impurities such as sand flow out of the lower adjusting nut 3 through the bolt hole 5.

[0034] In this embodiment, the upper adjusting nut 1 and the lower adjusting nut 3 are cylindrical and have circular grooves inside. The upper threaded rod 2 and the lower threaded rod 4 are cylindrical and have diameters slightly smaller than the circular grooves of the upper adjusting nut 1 and the lower adjusting nut 3. The diameters are slightly smaller than those of the upper threaded rod 2 and the lower threaded rod 4 so that the upper threaded rod 2 and the lower threaded rod 4 can be placed inside the upper adjusting nut 1 and the lower adjusting nut 3. The bolt 6 passes through the bolt hole 5 and is threadedly connected to the bolt groove 15.

[0035] The inner walls of the upper adjusting nut 1 and the lower adjusting nut 3 are provided with a joint thread 16 opposite to the threaded column 8, and the joint thread 16 is used for threaded connection with the threaded column 8. The length of the joint thread 16 is greater than the threaded column 8. The length greater than the threaded column 8 facilitates the in-depth length adjustment of the upper threaded rod 2; the threaded column 8 is threadedly connected to the joint thread 16, and the upper threaded rod 2 fixes the lower adjusting nut 3 through the threaded connection.

[0036] The working principle of the above embodiment is:

[0037] When the utility model is connected, the upper threaded rod 2 is first connected with the lower adjusting nut 3. When the utility model is connected, the threaded column 8 of the upper threaded rod 2 is first threadedly connected with the joint thread 16 of the lower adjusting nut 3. After the connection is completed, the bolt 6 is used to reinforce and fix. When the bolt 6 is reinforced and fixed, the bolt groove 15 of the joint 7 is first moved to a position opposite to the bolt hole 5, and then the bolt 6 passes through the bolt hole 5 and is threadedly connected to the bolt groove 15; after the bolt 6 is reinforced and fixed, it is reinforced and fixed by the fixer 10. When the upper threaded rod 2 is inserted into the lower adjusting nut 3, the fixing block 14 and the spring 12 are compressed. When it is compressed, it will store the potential energy brought by the pressure, and the potential energy will push the fixing block 14 toward the direction of the lower adjusting nut 3, so that the fixing block 14 can fix the lower adjusting nut 3; after the upper threaded rod 2 is connected with the lower adjusting nut 3, the sealing ring 9 can prevent impurities such as sand from entering the lower adjusting nut 3. When impurities such as sand appear in the lower adjusting nut 3 in time, the bolt 6 can be taken out of the lower adjusting nut 3 so that impurities such as sand can flow out of the lower adjusting nut 3 from the bolt hole 5.

[0038] Beneficial effects of the above embodiments:

[0039] 1. The threaded structure of the drill pipe joint, through the use of the joint structure, enables the device to be fixed by the thread and further reinforced by the joint structure, thereby avoiding the joint structure being easily loosened and causing connection failure under harsh conditions such as impact and vibration, which may lead to interruption of drilling operations or safety accidents, greatly enhancing the reliability of the connection of the device and making the device more stable.

[0040] 2. The threaded structure of the drill pipe joint can isolate the entry of impurities such as sand particles through the use of the sealing ring 9, thereby preventing the sand particles and other impurities from corroding and wearing the joint thread 16. At the same time, the use of the bolt hole 5 can help the sand particles and other impurities that enter the interior to be discharged, thereby increasing the service life of the joint thread 16.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A drill pipe joint thread structure, comprising an upper and lower adjusting nut structure, an upper and lower threaded rod structure is arranged at the bottom of the upper and lower adjusting nut structure, and a joint structure is arranged at the bottom of the upper and lower threaded rod structure; Features: The upper and lower adjusting nut structure comprises an upper adjusting nut (1), an upper threaded rod (2) is provided at the bottom of the upper adjusting nut (1), a lower adjusting nut (3) is threadedly connected at the bottom of the upper threaded rod (2), a lower threaded rod (4) is provided at the bottom of the lower adjusting nut (3), bolt holes (5) are provided on the right sides of the upper adjusting nut (1) and the lower adjusting nut (3), a bolt (6) is threadedly connected at the right side of the bolt hole (5), and joints (7) are provided at the bottoms of the upper threaded rod (2) and the lower threaded rod (4); The upper and lower threaded rod structure comprises a threaded column (8) located at the bottom of the upper threaded rod (2) and the lower threaded rod (4), and a sealing ring (9) is provided at the connection between the upper threaded rod (2) and the lower threaded rod (4) and the threaded column (8).

2. A drill rod joint thread structure according to claim 1, characterized in that: The joint structure comprises a joint (7), wherein a fixer (10) is arranged inside the joint (7), a support plate (11) is arranged in the middle of the fixer (10), springs (12) are arranged on the left and right sides of the support plate (11), a spring column (13) is arranged inside the spring (12), a fixing block (14) is arranged at the other end of the spring column (13), and a bolt groove (15) is arranged at the bottom of the fixer (10).

3. A drill rod joint thread structure according to claim 1, characterized in that: The inner walls of the upper adjusting nut (1) and the lower adjusting nut (3) are provided with joint threads (16) opposite to the threaded column (8); the length of the joint threads (16) is greater than that of the threaded column (8); and the threaded column (8) is threadedly connected to the joint threads (16).

4. A drill rod joint thread structure according to claim 2, characterized in that: The fixer (10) is in the shape of a horizontal cylinder. A certain gap is left between the fixer (10) and the lower adjustment nut (3). A certain gap is also provided on the left and right sides of the bolt slot (15). The gap is connected to the bolt hole (5).

5. The drill rod joint thread structure according to claim 1, characterized in that: The upper adjusting nut (1) and the lower adjusting nut (3) are cylindrical and have circular grooves inside. The upper threaded rod (2) and the lower threaded rod (4) are cylindrical and have diameters slightly smaller than the circular grooves of the upper adjusting nut (1) and the lower adjusting nut (3). The bolt (6) passes through the bolt hole (5) and is threadedly connected to the bolt groove (15).

6. A drill rod joint thread structure according to claim 4, characterized in that: The support plate (11) is fixed at the inner center line of the fixer (10), the spring (12) wraps the spring column (13), the spring column (13) is fixedly connected to the support plate (11), and the fixing block (14) has a certain degree of softness.

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