Protection device for lengthened nozzle of PDC (Polycrystalline Diamond Compact) bit

Abstract

The utility model discloses a protection device for a lengthened nozzle of a PDC (Polycrystalline Diamond Compact) drill bit, which relates to the range of oil drilling tools and comprises a main pipe, an auxiliary pipe arranged at the lower part of the main pipe and partially arranged in the main pipe, a connecting component arranged at the top of the auxiliary pipe and arranged in the main pipe, and an auxiliary component arranged at the upper part of the connecting component. The auxiliary assembly is arranged on the upper portion of the main pipe. A transition piece is arranged between the auxiliary pipe and the main pipe. Brand-new components and a brand-new connection relation are adopted, the main pipe is additionally arranged on the nozzle, the auxiliary pipe is connected with the nozzle, the nozzle is protected, the cleaning capacity of the nozzle to a drill bit is improved, and the using effect of the drill bit is improved.

Description

Technical Field

[0001] The utility model relates to the field of oil drilling tools, and specifically relates to a protection device for an extended nozzle of a PDC bit. Background Technique

[0002] Most bits and PDC bits adopt PDC cutting teeth, which are characterized by strong radial cutting ability. However, due to the original design intention of PDC cutting teeth to ensure strong radial scraping ability during rotary drilling, their ability to resist axial impact loads is weak.

[0003] In the prior art, nozzles are mostly added to the PDC bit to clean the bit and ensure the normal use of the PDC bit. However, when the nozzle is extended, it is easily subjected to longitudinal and transverse forces and is easily broken. Therefore, a protection device for an extended nozzle of a PDC bit needs to be proposed to solve the above problems. Content of the Utility Model

[0004] The purpose of the utility model is to provide a protection device for an extended nozzle of a PDC bit to solve the problems existing in the prior art.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A protection device for an extended nozzle of a PDC bit includes a main pipe. An auxiliary pipe is provided at the lower part of the main pipe. Part of the auxiliary pipe is arranged inside the main pipe. A connection component is provided at the top of the auxiliary pipe. The connection component is arranged inside the main pipe. An auxiliary component is provided above the connection component. The auxiliary component is arranged above the main pipe. A transition piece is provided between the auxiliary pipe and the main pipe.

[0007] For a protection device for an extended nozzle of a PDC bit as described above, an installation sleeve is provided at the bottom end of the auxiliary pipe.

[0008] For a protection device for an extended nozzle of a PDC bit as described above, the connection component includes a connection platform. The connection platform is arranged at the top end of the auxiliary pipe. A support plate is provided below the connection platform. The support plate is connected to the transition piece. A connection spring is sleeved above the connection platform. The connection spring is connected to the auxiliary component.

[0009] For a protection device for an extended nozzle of a PDC bit as described above, the auxiliary component includes an auxiliary base. The auxiliary base is arranged above the main pipe. A through hole is provided inside the auxiliary base. A protective cover is provided above the auxiliary base.

[0010] For a protection device for an extended nozzle of a PDC bit as described above, the through hole is in a flared shape.

[0011] A protection device for an extended nozzle of a PDC bit as described above, wherein the transition member includes a transition sleeve, and a pressure release plate is provided on the outer wall of the transition sleeve. The pressure release plate is connected to the transition sleeve through a transition ball.

[0012] The advantages of the present utility model are as follows: The present utility model adopts brand-new components and a brand-new connection relationship. A main pipe is added to the nozzle, and the auxiliary pipe is connected to the nozzle, which plays a protective role for the nozzle, also increases the cleaning ability of the nozzle for the bit, and improves the use effect of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0014] Figure 1 is the structural schematic diagram of the present utility model; Figure 2 is the structural sketch of the present utility model; Figure 3 is Figure 2 the partial enlarged view A1 of Figure 4 is Figure 2 the partial enlarged view A2 of

[0015] Reference numerals: 1, main pipe; 2, auxiliary pipe; 3, connection assembly; 4, auxiliary assembly; 5, transition member; 21, mounting sleeve; 31, connection platform; 32, support plate; 33, connection spring; 41, auxiliary base; 42, through hole; 43, protective cover; 51, transition sleeve; 52, pressure release plate; 53, transition ball. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] In order to make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model.

[0017] Such as Figures 1-4As shown in the figure, a protection device for an extended nozzle of a PDC bit includes a main pipe 1. An auxiliary pipe 2 is provided at the lower part of the main pipe 1. Part of the auxiliary pipe 2 is arranged inside the main pipe 1. A connection assembly 3 is provided at the top of the auxiliary pipe 2. The connection assembly 3 is arranged inside the main pipe 1. An auxiliary assembly 4 is provided at the upper part of the connection assembly 3. The auxiliary assembly 4 is arranged at the upper part of the main pipe 1. A transition piece 5 is provided between the auxiliary pipe 2 and the main pipe 1. When using the present utility model, it is necessary to connect all components together according to the connection relationship. Connect the auxiliary pipe 2 to the nozzle. The connection method between the auxiliary pipe 2 and the nozzle is not limited to threaded connection, and other connection methods can also be adopted, as long as the connection between the auxiliary pipe 2 and the nozzle is tight and firm. The present utility model is sleeved on the nozzle, which has the effects of protecting the nozzle and increasing the cleaning ability.

[0018] Specifically, as Figures 1-4 shown, an installation sleeve 21 is provided at the bottom end of the auxiliary pipe 2 in this embodiment. It is convenient for the present utility model to be connected to the nozzle.

[0019] Specifically, as Figures 1-4 shown, the connection assembly 3 in this embodiment includes a connection platform 31. The connection platform 31 is arranged at the top end of the auxiliary pipe 2. A support plate 32 is provided at the lower part of the connection platform 31. The support plate 32 is connected to the transition piece 5. A connection spring 33 is sleeved on the upper part of the connection platform 31. The connection spring 33 is connected to the auxiliary assembly 4. When the auxiliary assembly 4 is subjected to external pressure, the connection spring 33 will be compressed, thereby absorbing part of the external impact force and further releasing part of the pressure, playing a damping effect and protecting the present utility model.

[0020] Furthermore, as Figures 1-4 shown, the auxiliary assembly 4 in this embodiment includes an auxiliary base 41. The auxiliary base 41 is arranged at the upper part of the main pipe 1. A through hole 42 is provided inside the auxiliary base 41. A protective cover 43 is provided at the upper part of the auxiliary base 41. The through hole 42 is in a flared shape. It plays a role in protecting the nozzle and can also increase the cleaning ability of the nozzle.

[0021] Even further, as Figures 1-4 shown, the transition piece 5 in this embodiment includes a transition sleeve 51. A pressure release plate 52 is provided on the outer wall of the transition sleeve 51. The pressure release plate 52 is connected to the transition sleeve 51 through a transition ball 53. It prevents the external pressure from excessively squeezing the present utility model and increases the service life of the present utility model.

[0022] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A protective device for a PDC drill bit extended nozzle, characterized in that: The invention comprises a main pipe (1), an auxiliary pipe (2) is arranged at the lower part of the main pipe (1), the auxiliary pipe (2) is partially arranged inside the main pipe (1), a connecting component (3) is arranged at the top of the auxiliary pipe (2), the connecting component (3) is arranged inside the main pipe (1), an auxiliary component (4) is arranged at the upper part of the connecting component (3), the auxiliary component (4) is arranged at the upper part of the main pipe (1), and a transition piece (5) is arranged between the auxiliary pipe (2) and the main pipe (1).

2. A protective device for a PDC drill bit extended nozzle according to claim 1, characterized in that: The bottom end of the auxiliary pipe (2) is provided with a mounting sleeve (21).

3. The protective device for the PDC drill bit extended nozzle according to claim 1, characterized in that: The connecting assembly (3) comprises a connecting platform (31), the connecting platform (31) is arranged at the top end of the auxiliary pipe (2), a support plate (32) is arranged at the bottom of the connecting platform (31), the support plate (32) is connected to the transition piece (5), a connecting spring (33) is sleeved at the top of the connecting platform (31), and the connecting spring (33) is connected to the auxiliary assembly (4).

4. The protective device for the PDC drill bit extended nozzle according to claim 1, characterized in that: The auxiliary component (4) comprises an auxiliary base (41), the auxiliary base (41) is arranged on the upper part of the main pipe (1), a through hole (42) is arranged inside the auxiliary base (41), and a protective cover (43) is arranged on the upper part of the auxiliary base (41).

5. A protective device for a PDC drill bit extended nozzle according to claim 4, characterized in that: The through hole (42) is trumpet-shaped.

6. The protective device for the PDC drill bit extended nozzle according to claim 1, characterized in that: The transition piece (5) comprises a transition sleeve (51), a pressure relief plate (52) is provided on the outer wall of the transition sleeve (51), and the pressure relief plate (52) is connected to the transition sleeve (51) via a transition ball (53).

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