Drilling pipe water leakage prevention structure

Abstract

The utility model relates to a drilling rod technical field discloses a drilling rod leak protection structure, wherein, the drilling rod includes the tubulature, the male buckle of setting in the one end of tubulature and the female buckle of setting in the other end of tubulature, the end of male buckle extends out the taper mouth portion, the position of taper mouth portion is provided with the taper hole on the female buckle, when the male buckle of one tubulature is connected with the female buckle of another tubulature threadedly, the taper mouth portion and the taper hole cooperate and form secondary seal. The above-mentioned drilling rod leak protection structure has increased the taper mouth portion on the original male buckle, has increased the taper hole on the female buckle, makes the male buckle and the female buckle cooperation screw up the taper mouth portion and the taper hole cooperation simultaneously, forms two seals of inside and outside, thereby has improved the sealing property of joint place obviously, has optimized the design from the angle of drilling rod self structure, need not rely on other sealing piece and sealing technology, and the structure is more simple.

Description

Technical Field

[0001] This utility model relates to the field of drill pipe technology, and in particular to a drill pipe anti-leakage structure. Background Technology

[0002] Trenchless drill pipes consist of three parts: the pipe body, the male thread, and the female thread. The raw materials used in the production of trenchless drill pipes are seamless steel pipes of various specifications, which are manufactured through multiple processing steps. The main processes include sawing and blanking, thickening, heat treatment, straightening, mechanical property testing, non-destructive testing, thread machining, thread non-destructive testing, and thread parameter testing.

[0003] In use, drill pipes are connected end to end according to the drilling depth. However, the existing mating structure of the male and female threads of the drill pipe cannot achieve the required sealing level, resulting in water leakage. The sealing can only be improved by adding additional seals or an extra process, which increases the assembly difficulty and cost. Utility Model Content

[0004] The purpose of this utility model is to provide a water-proof structure for drill rods, solve the problems mentioned in the background art, and improve the waterproof sealing of drill rod connections.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A water-proof structure for a drill rod, wherein the drill rod includes a tube body, a male thread disposed at one end of the tube body, and a female thread disposed at the other end of the tube body. The end of the male thread extends into a tapered opening, and the female thread is provided with a tapered hole at a position corresponding to the tapered opening. When the male thread of one tube body is threadedly connected to the female thread of another tube body, the tapered opening and the tapered hole cooperate to form a secondary seal.

[0007] As an alternative, the taper of the conical opening is greater than the taper of the male thread.

[0008] As an optional solution, the male thread has a taper angle of 10°, the taper angle of the taper opening is 20°, and the axial length of the taper opening is 10mm.

[0009] As an alternative, both the surface of the conical opening and the surface of the conical hole are smooth conical surfaces.

[0010] As an alternative, the tapered opening is provided with an external thread, and the tapered hole is provided with an internal thread that mates with the external thread.

[0011] The beneficial effects of this utility model are:

[0012] The leak-proof structure of this drill pipe adds a tapered opening to the original male thread and a tapered hole to the female thread. This allows the male and female threads to be tightened together while the tapered opening and the tapered hole engage, forming a double seal, which significantly improves the sealing performance at the joint. The design is optimized from the perspective of the drill pipe's own structure, eliminating the need for other sealing components and processes, resulting in a simpler structure. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the drill rod anti-leakage structure provided in this embodiment of the utility model;

[0014] Figure 2 This is a schematic diagram of the fit of the drill rod anti-leakage structure provided in this embodiment of the utility model.

[0015] In the attached image:

[0016] 1. Pipe body; 2. Male buckle; 3. Female buckle; 4. Taper mouth; 5. Taper hole. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0018] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0020] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] Furthermore, the terms "first" and "second" are merely used to distinguish between different terms in description and do not have any special meaning.

[0022] Please see Figure 1 and Figure 2 As shown, this embodiment provides a drill rod anti-leakage structure, wherein the drill rod includes a tube body 1, a male thread 2 disposed at one end of the tube body 1 and a female thread 3 disposed at the other end of the tube body 1. The end of the male thread 2 extends into a conical opening 4, and the female thread 3 is provided with a conical hole 5 at the position corresponding to the conical opening 4. When the male thread 2 of one tube body 1 is threadedly connected to the female thread 3 of another tube body 1, the conical opening 4 and the conical hole 5 cooperate to form a secondary seal.

[0023] Therefore, a conical opening 4 was added to the original male thread 2, and a conical hole 5 was added to the female thread 3. This allows the male thread 2 and the female thread 3 to be tightened together, while the conical opening 4 and the conical hole 5 are engaged to form two seals, one inside and one outside. This significantly improves the sealing performance at the joint. The design was optimized from the perspective of the drill pipe's own structure, eliminating the need for other sealing components and sealing processes, resulting in a simpler structure.

[0024] Optionally, the taper of the conical opening 4 is greater than the taper of the male buckle 2, which does not affect the original fit between the male buckle 2 and the female buckle 3, and ensures the fit between the conical opening 4 and the conical hole 5.

[0025] Specifically, the taper angle of male thread 2 is 10°, the taper angle of tapered opening 4 is 20°, and the axial length of tapered opening 4 is 10mm. These parameters ensure a tight fit between tapered opening 4 and tapered hole 5, effectively preventing leakage and improving the overall sealing performance of the drill pipe.

[0026] Optionally, both the surface of the conical opening 4 and the surface of the conical hole 5 are smooth conical surfaces. The conical opening 4 and the conical hole 5 fit tightly together through the smooth conical surfaces, ensuring a sealing effect and improving the alignment and connection strength at the joint to a certain extent, without affecting the appearance of the drill rod.

[0027] Alternatively, the tapered opening 4 may have an external thread, and the tapered hole 5 may have an internal thread that mates with the external thread. The tapered opening 4 and the tapered hole 5, through threaded engagement, form a double-threaded connection structure with the existing male thread 2 and female thread 3, further enhancing sealing and connection stability. This allows the drill pipe to maintain excellent sealing performance under complex working conditions, extending its service life, reducing maintenance costs, and improving operational efficiency.

[0028] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A water-proof structure for a drill rod, the drill rod comprising a tube body (1), a male thread (2) disposed at one end of the tube body (1), and a female thread (3) disposed at the other end of the tube body (1), characterized in that, The male buckle (2) extends into a conical opening (4) at its end. The female buckle (3) is provided with a conical hole (5) corresponding to the position of the conical opening (4). When the male buckle (2) of one tube body (1) is threadedly connected to the female buckle (3) of another tube body (1), the conical opening (4) and the conical hole (5) cooperate to form a secondary seal.

2. The drill pipe anti-leakage structure according to claim 1, characterized in that, The taper of the conical opening (4) is greater than the taper of the male buckle (2).

3. The drill pipe anti-leakage structure according to claim 2, characterized in that, The male buckle (2) has a cone angle of 10°, the cone angle of the cone opening (4) is 20°, and the axial length of the cone opening (4) is 10mm.

4. The drill pipe anti-leakage structure according to claim 1, characterized in that, The surface of the conical opening (4) and the surface of the conical hole (5) are both smooth conical surfaces.

5. The drill pipe anti-leakage structure according to claim 1, characterized in that, The conical opening (4) is provided with an external thread, and the conical hole (5) is provided with an internal thread that mates with the external thread.

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