Shot blasting protection tool

Abstract

The utility model relates to the technical field of drill collar machining, and discloses a shot blasting protection tool which comprises a front ring body, a rear ring body and a plurality of inserting pieces used for connecting the front ring body and the rear ring body, and the inserting pieces are arranged in a circumferential array mode. The number of the inserting pieces is the same as that of notches of the annular grooves of the drill collar, and the inserting pieces are in one-to-one correspondence. According to the shot blasting protection tool, accurate protection is achieved through the inserting pieces in one-to-one correspondence with the notches of the annular grooves, and damage of shot blasting to the annular grooves is eradicated; the front ring body, the rear ring body and the inserting pieces form a stable surrounding structure which is resistant to impact and not prone to displacement and falling off, and it is guaranteed that shot blasting operation is smooth.

Description

Technical Field

[0001] This utility model relates to the field of drill collar processing technology, and in particular to a shot peening protective tool. Background Technology

[0002] In oil drilling and related fields, drill collars play a crucial role as key components. The outer surface of the drill collar typically features an annular groove, which serves a dual critical function. Firstly, it provides space for antennas that transmit and receive electromagnetic waves, effectively preventing damage from contact with the wellbore during drilling. Secondly, given that electromagnetic wave transmission is highly susceptible to the effects of metal shielding, adhesive is usually used to seal and protect the transmitting and receiving antennas, ensuring their proper functioning.

[0003] In the manufacturing process of drill collars, shot peening is a commonly used surface strengthening process. By spraying shot onto the surface of the drill collar, plastic deformation is caused, thereby improving surface strength and facilitating subsequent coating. However, the annular groove of the drill collar has special requirements. Because its dimensional accuracy and structural integrity are crucial to the normal operation of the antenna and the overall performance of the drill collar, shot peening must never be performed on the annular groove. Otherwise, it is very likely to cause deformation and damage to the annular groove, which will affect the installation and normal operation of the antenna, and ultimately cause serious interference to the signal transmission and other functions of the entire drilling operation.

[0004] Currently, there is a lack of specially designed and effective protective tooling for shot peening protection of drill collar annular grooves. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a shot peening protective tool, which is designed to perform shot peening protection on the annular groove component on the drill collar.

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

[0007] A shot peening protective fixture includes a front ring body, a rear ring body, and multiple inserts for connecting the front ring body and the rear ring body. The inserts are arranged in a circumferential array. The number of inserts is the same as the number of slots in the annular grooves of the drill collar and corresponds one-to-one.

[0008] As a further improvement to the above technical solution, the insert extends laterally, and the inner sides of the front ring and the rear ring are provided with slots for inserting the end of the insert.

[0009] As a further improvement to the above technical solution, the front ring body and the rear ring body are provided with first threaded holes on their circumferential surfaces, which are the same number as the number of slots and communicate with the slots. A first screw is screwed into each first threaded hole to lock the end of the insert.

[0010] The shot peening protective fixture also includes an antenna slot cover. The inner sides of the front ring and the rear ring are provided with a mating notch. The antenna slot cover is provided with a locking block, which can be connected to the mating notch on the front ring or the mating notch on the rear ring.

[0011] As a further improvement to the above technical solution, the antenna slot cover includes an arc-shaped bottom cover, a vertical block set on the arc-shaped bottom cover, a front arc cover set in front of the vertical block, and a tail protrusion set at the tail of the arc-shaped bottom cover. The locking block is set on the vertical block and located above the front arc cover. The tail protrusion has an installation through hole. A second screw is screwed into the installation through hole. The second screw is connected with the threaded hole on the drill collar to fix the antenna slot cover.

[0012] As a further improvement to the above technical solution, a second threaded hole is provided on the front end face of the front arc cover, and a third screw is screwed into the second threaded hole. The head of the third screw and the antenna slot cover together clamp the front ring or the rear ring.

[0013] The beneficial effects of this utility model are as follows: The shot peening protective fixture provided by this utility model achieves precise protection through inserts that correspond one-to-one with the groove openings of the ring groove, thus preventing shot peening from damaging the ring groove; the front ring body, the rear ring body, and the inserts form a stable surrounding structure that is impact-resistant and not easily displaced or detached, ensuring smooth shot peening operations. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the shot peening protective fixture provided by this utility model for protecting drill collars.

[0015] Figure 2 This is a schematic diagram of the structure of the shot peening protective fixture provided by this utility model.

[0016] Figure 3 This is a structural schematic diagram of the antenna slot cover.

[0017] Figure 4 for Figure 1 A magnified view of region A in the middle.

[0018] Explanation of main component symbols: 11-front ring body, 12-rear ring body, 13-first threaded hole, 14-slot, 15-butt notch, 2-insert plate, 3-antenna slot cover, 31-arc bottom cover, 32-vertical block, 33-front arc cover, 34-tail protrusion, 35-slot, 36-mounting through hole, 37-second threaded hole, 38-second screw, 39-third screw, 41-drill collar, 42-shot peening protective fixture. Detailed Implementation

[0019] This utility model provides a shot peening protective fixture 42. To make the purpose, technical solution, and effects of this utility model clearer and more explicit, the following describes this utility model in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit the scope of protection of this utility model.

[0020] Please see Figures 1 to 4 This utility model provides a shot peening protective fixture 42, including a front ring body 11, a rear ring body 12, and multiple inserts 2 for connecting the front ring body 11 and the rear ring body 12. The inserts 2 are arranged in a circumferential array. The number of inserts 2 is the same as the number of slots in the annular groove of the drill collar 41 and corresponds one-to-one.

[0021] During shot peening of the drill collar 41, the shot peening protective fixture 42 is fitted onto the annular groove portion of the drill collar 41. Since the number of inserts 2 corresponds exactly to the number of annular groove openings in the drill collar 41, the inserts 2 can be precisely inserted into the annular groove openings of the drill collar 41. The front ring body 11 and the rear ring body 12 are connected circumferentially by multiple inserts 2, surrounding the outside of the drill collar 41, thus forming an overall protective structure around the annular groove portion of the drill collar 41. During shot peening, the shot is sprayed onto the surface of the fixture. The fixture withstands the impact force of the shot, preventing the shot from directly acting on the annular groove portion of the drill collar 41, avoiding deformation and damage to the annular groove due to shot peening impact, ensuring that the dimensional accuracy and structural integrity of the annular groove are not compromised, and guaranteeing the normal installation and operation of the antenna subsequently.

[0022] The shot peening protective fixture 42 provided by this utility model achieves precise protection through inserts 2 that correspond one-to-one with the slot openings of the annular groove, preventing damage to the annular groove from shot peening. The front ring body 11, the rear ring body 12, and the inserts 2 form a stable surrounding structure that is impact-resistant and not easily displaced or detached, ensuring smooth shot peening operations. The number of inserts 2 can be adjusted according to the number of annular groove openings, adapting to various specifications of drill collars 41, making it highly adaptable. Ultimately, it prevents damage to the annular groove, ensures normal antenna installation and operation, improves the performance of the drill collar 41, and reduces the risk of failure and costs.

[0023] Specifically, the insert 2 extends laterally, and the inner sides of the front ring 11 and the rear ring 12 are provided with slots 14 for the end of the insert 2 to be inserted. Firstly, the laterally extending insert 2 makes the tooling installation more convenient. Workers can quickly align the insert 2 with the slots 14 laterally, greatly improving the assembly efficiency of the tooling, reducing installation time, and helping to improve the overall production progress. Secondly, the slots 14 provide precise and stable installation positioning for the end of the insert 2. After the end of the insert 2 is tightly embedded in the slots 14, it can effectively prevent displacement of the insert 2 in the circumferential and axial directions, greatly enhancing the stability of the tooling structure and ensuring that during shot peening, the insert 2 can always accurately protect the annular groove of the drill collar 41, resisting the impact of the shot without deviation.

[0024] To prevent the shot peening protective fixture 42 from rotating or moving during operation, the front ring body 11 and the rear ring body 12 are provided with first threaded holes 13 on their circumferential surfaces, which are the same number as the slots 14 and communicate with the slots 14. A first screw is screwed into each first threaded hole 13 and presses against the circumferential surface of the drill collar 41 to achieve locking.

[0025] Understandably, the front ring 11, the rear ring 12, and the insert 2 are all made of 6061 alloy and are fixed together by welding after assembly, which can withstand large loads and impacts and resist projectile impacts.

[0026] The shot peening protective fixture 42 also includes an antenna slot cover 3. In terms of shot peening protection, the antenna slot cover 3 precisely covers the antenna slot beside the annular slot opening. During shot peening, the fixture as a whole resists most of the impact force of the projectile, while the antenna slot cover 3 further provides protection for this critical and vulnerable area. It effectively prevents projectiles from directly hitting the antenna slot, avoiding deformation and damage caused by shot peening impact, ensuring the dimensional accuracy and structural integrity of the antenna slot are maintained, and guaranteeing that subsequent antenna installation and related functions are not affected.

[0027] Specifically, the antenna slot cover 3 includes an arc-shaped bottom cover 31, a vertical block 32 disposed on the arc-shaped bottom cover 31, a front arc cover 33 disposed in front of the vertical block 32, a tail protrusion 34 disposed at the tail of the arc-shaped bottom cover 31, and a locking block 35 disposed on the vertical block 32 and located above the front arc cover 33. The tail protrusion 34 has a mounting through hole 36, and a second screw 38 is screwed into the mounting through hole 36. The second screw 38 is connected to the threaded hole on the drill collar 41 to fix the antenna slot cover 3. A second threaded hole 37 is provided on the front end face of the front arc cover 33, and a third screw 39 is screwed into the second threaded hole 37. A mating notch 15 is provided on the inner side of the front ring body 11 and the rear ring body 12. A locking block 35 is provided on the antenna slot cover 3. The locking block 35 can be connected with the mating notch 15 on the front ring body 11 or the mating notch 15 on the rear ring body 12. The head of the third screw 39 and the antenna slot cover 3 together clamp the front ring body 11 or the rear ring body 12.

[0028] The antenna slot cover 3 can be made of nylon material.

[0029] The installation steps of the shot peening protective fixture 42 are as follows: First, the antenna slot cover 3 is screwed into the threaded hole of the drill collar 41 through the mounting through hole 36 on the tail protrusion 34 and the second screw 38 to complete the initial fixation. The operation is simple and direct. Then, the insert 2 is installed. At this time, the fixed antenna slot cover 3 will not hinder the installation of the insert 2. Moreover, the locking block 35 on its vertical block 32 and the mating notch 15 on the inner side of the front and rear ring bodies 12 can still allow the insert 2 to be quickly positioned and installed circumferentially and axially, which greatly saves the overall installation time and improves the assembly efficiency of the fixture. After the insert 2 is installed, the third screw 39 screwed into the second threaded hole 37 on the front end face of the front arc cover 33 clamps with the front ring body 11 or the rear ring body 12, thereby effectively restricting the axial movement of the insert 2. This design can effectively resist the loosening and displacement caused by the impact of the shot during shot peening, ensuring that the antenna slot cover 3 is always tightly fitted to the antenna slot and the insert 2 is always tightly fitted to the ring groove, which greatly enhances the stability and reliability of the overall protection of the fixture.

[0030] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, 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, and therefore should not be construed as a limitation of this utility model.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for communication; 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 according to the specific circumstances.

[0032] It is understood that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of this utility model, and all such substitutions or changes should fall within the protection scope of this utility model.

Claims

1. A shot peening protective fixture, characterized in that, It includes a front ring body, a rear ring body, and multiple inserts for connecting the front and rear ring bodies, the inserts being arranged in a circumferential array; the number of inserts is the same as the number of slots in the annular grooves of the drill collar and corresponds one-to-one.

2. The shot peening protective fixture according to claim 1, characterized in that, The insert extends laterally, and the inner sides of the front and rear rings are provided with slots for inserting the ends of the insert.

3. The shot peening protective fixture according to claim 2, characterized in that, The front and rear ring bodies have first threaded holes on their circumferential surfaces, which are the same number as the slots and communicate with the slots. A first screw is screwed into each first threaded hole to lock the end of the insert.

4. The shot peening protective fixture according to claim 1, characterized in that, It also includes an antenna slot cover, wherein the inner side of the front ring and the rear ring is provided with a docking notch, and the antenna slot cover is provided with a locking block, which can be connected to the docking notch on the front ring or the docking notch on the rear ring.

5. The shot peening protective fixture according to claim 4, characterized in that, The antenna slot cover includes an arc-shaped bottom cover, a vertical block on the arc-shaped bottom cover, a front arc-shaped cover in front of the vertical block, and a tail protrusion at the tail of the arc-shaped bottom cover. The locking block is set on the vertical block and located above the front arc-shaped cover. The tail protrusion has a mounting through hole. A second screw is screwed into the mounting through hole. The second screw is connected to the threaded hole on the drill collar to fix the antenna slot cover.

6. The shot peening protective fixture according to claim 5, characterized in that, A second threaded hole is provided on the front end face of the front arc cover, and a third screw is screwed into the second threaded hole. The head of the third screw and the antenna slot cover together clamp the front ring or the rear ring.

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