Hard alloy TC bearing for well drilling

Abstract

The utility model relates to the technical field of bearings for well drilling, in particular to a hard alloy TC bearing for well drilling, which can effectively improve the bearing capacity and wear resistance of the bearing and prolong the service life of the TC bearing. Comprising a bearing rigid outer ring and a bearing rigid inner ring which are sleeved together, the bearing rigid inner ring is sleeved with the bearing rigid outer ring, multiple sets of outer ring key grooves are annularly formed in the inner wall of the bearing rigid outer ring at equal intervals, and outer ring base bodies are fixedly embedded into the multiple sets of outer ring key grooves; a plurality of groups of outer ring base body sinking grooves are formed in the inner side of each group of outer ring base body at equal intervals, outer ring alloy blocks are fixedly embedded in each group of outer ring base body sinking grooves, a plurality of groups of inner ring key grooves are annularly formed in the outer wall of the bearing steel inner ring at equal intervals, and a plurality of groups of inner ring base body sinking grooves are formed in the outer side of each group of inner ring base body at equal intervals; the number of the inner ring base body sinking grooves is the same as that of the outer ring base body sinking grooves, and an inner ring alloy block is fixedly embedded into each group of inner ring base body sinking grooves.

Description

Technical Field

[0001] This utility model relates to the technical field of drilling bearings, and in particular to a cemented carbide TC bearing for drilling. Background Technology

[0002] Carbide (TC) bearings are specialized composite sliding bearings unique to the oil drilling industry. They use drilling fluid as the lubricating medium and consist of inner and outer rings. The inner ring is fixed to the shaft and rotates with it, while the outer ring is connected to the drill collar and supports the rotational movement of both the inner ring and the shaft. Together, they form the working face. Their main function is to transmit the torque and speed of the motor to the drill bit. They are suitable for harsh drilling conditions in downhole environments with limited radial space, high loads, large impacts, and strong vibrations. They are widely used in screw drills and turbine drills and are core components of these power drilling tools, directly determining their service life.

[0003] Currently, the existing TC bearings for drilling have a relatively simple structure, a service life of only 200-250 hours, a relatively short lifespan, and insufficient load-bearing capacity and wear resistance. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a cemented carbide TC bearing for drilling that can effectively improve the bearing capacity and wear resistance of bearings and extend the service life of TC bearings.

[0005] Technical solution

[0006] To achieve the above objectives, this utility model provides the following technical solution: a cemented carbide TC bearing for drilling, comprising a bearing outer ring and a bearing inner ring fitted together, the bearing inner ring being fitted inside the bearing outer ring, a plurality of sets of outer ring keyways being equidistantly arranged on the inner wall of the bearing outer ring, each set of outer ring keyways having an outer ring substrate fixedly embedded therein, each set of outer ring substrate inner side having a plurality of outer ring substrate grooves equidistantly arranged therein, each set of outer ring substrate grooves having an outer ring alloy block fixedly embedded therein, the outer wall of the bearing inner ring having a plurality of sets of inner ring keyways being equidistantly arranged therein, the number of inner ring keyways being the same as the number of outer ring keyways, each set of inner ring keyways having an inner ring substrate fixedly embedded therein, each set of inner ring substrate outer side having a plurality of inner ring substrate grooves equidistantly arranged therein, the number of inner ring substrate grooves being the same as the number of outer ring substrate grooves, each set of inner ring substrate grooves having an inner ring alloy block fixedly embedded therein.

[0007] Preferably, the inner sides of the multiple sets of outer ring substrates and outer ring alloy blocks are all arc-shaped concave surfaces, and the arc-shaped concave surfaces are aligned with the inner wall of the outer ring of the bearing rigid body. The outer sides of the multiple sets of inner ring substrates and inner ring alloy blocks are all arc-shaped convex surfaces, and the arc-shaped convex surfaces are aligned with the outer wall of the inner ring of the bearing rigid body.

[0008] Preferably, the outer ring substrate and inner ring substrate, as well as the outer ring alloy block and inner ring alloy block, are all made of tungsten carbide hard alloy material.

[0009] Preferably, tungsten carbide powder is sintered on the surfaces of the outer ring and inner ring of the bearing.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: During processing, an outer ring keyway and an inner ring keyway are respectively opened on the inner wall of the outer ring of the bearing and the outer wall of the inner ring of the bearing. The number is determined according to the diameter of the outer ring and the inner ring of the bearing, generally eight. An outer ring substrate and an inner ring substrate are fixedly embedded in the outer ring keyway and the inner ring keyway respectively, and multiple outer ring alloy blocks and inner ring alloy blocks are fixedly embedded on the outer ring substrate and the inner ring substrate respectively. This enhances the bearing's load-bearing capacity and wear resistance, making the bearing more adaptable to the harsh working environment at the bottom of the well, thereby effectively improving the bearing's load-bearing capacity and wear resistance, and extending the service life of the TC bearing. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the isometric structure of this utility model;

[0012] Figure 2 This is a utility model Figure 1 An exploded view of the assembled structure (axis view);

[0013] Figure 3 This is an isometric exploded view of the bearing outer ring and bearing inner ring when they are fitted together in this utility model.

[0014] Figure 4 This is an isometric structural diagram of the outer ring substrate in this utility model;

[0015] Figure 5 This is an isometric structural diagram of the inner ring substrate in this utility model;

[0016] The following labels are used in the attached diagram: 1. Outer ring of bearing rigid body; 2. Inner ring of bearing rigid body; 3. Outer ring keyway; 4. Outer ring base; 5. Outer ring base countersink; 6. Outer ring alloy block; 7. Inner ring keyway; 8. Inner ring base; 9. Inner ring base countersink; 10. Inner ring alloy block. Detailed Implementation

[0017] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0018] Example

[0019] Please see Figures 1-5This utility model discloses a cemented carbide TC bearing for drilling, comprising a bearing outer ring 1 and a bearing inner ring 2 fitted together. The bearing inner ring 2 is fitted inside the bearing outer ring 1. Multiple sets of outer ring keyways 3 are equidistantly arranged on the inner wall of the bearing outer ring 1. An outer ring base 4 is fixedly embedded in each set of outer ring keyways 3. Multiple sets of outer ring base countersunk grooves 5 are equidistantly arranged on the inner side of each set of outer ring base 4. An outer ring alloy block 6 is fixedly embedded in each set of outer ring base countersunk grooves 5. Multiple sets of inner ring keyways 7 are equidistantly arranged on the outer wall of the bearing inner ring 2, and the number of inner ring keyways 7 is the same as the number of outer ring keyways 3. An inner ring base 8 is fixedly embedded in each set of inner ring keyways 7. Multiple sets of inner ring base countersunk grooves 9 are equidistantly arranged on the outer side of each set of inner ring base 8. The number of grooves 9 is the same as that of the outer ring base grooves 5. Each set of inner ring base grooves 9 has an inner ring alloy block 10 fixedly embedded in it. During processing, outer ring keyways 3 and inner ring keyways 7 are respectively opened on the inner wall of the outer ring 1 and the outer wall of the inner ring 2 of the bearing rigid body. The number of keyways is determined according to the diameter of the outer ring 1 and the inner ring 2 of the bearing rigid body, and is generally set to eight. Outer ring bases 4 and inner ring bases 8 are fixedly embedded in the outer ring keyways 3 and the inner ring keyways 7, respectively. Multiple outer ring alloy blocks 6 and inner ring alloy blocks 10 are fixedly embedded in the outer ring bases 4 and the inner ring bases 8, respectively. This enhances the bearing's load-bearing capacity and wear resistance, making the bearing more adaptable to the harsh working environment at the bottom of the well, thereby effectively improving the bearing's load-bearing capacity and wear resistance, and extending the service life of the TC bearing.

[0020] The inner sides of the multiple sets of outer ring bases 4 and outer ring alloy blocks 6 are all arc-shaped concave surfaces, and the arc-shaped concave surfaces are aligned with the inner wall of the outer ring 1 of the bearing rigid body. The outer sides of the multiple sets of inner ring bases 8 and inner ring alloy blocks 10 are all arc-shaped convex surfaces, and the arc-shaped convex surfaces are aligned with the outer wall of the inner ring 2 of the bearing rigid body. By setting the inner side of the outer ring base 4 as an arc-shaped concave surface aligned with the inner wall of the outer ring 1 of the bearing rigid body, and setting the outer side of the inner ring base 8 as an arc-shaped convex surface aligned with the outer wall of the inner ring 2 of the bearing rigid body, the inner wall of the outer ring 1 of the bearing rigid body and the outer wall of the inner ring 2 of the bearing rigid body can be kept flat, avoiding interference with the assembly of the outer ring 1 of the bearing rigid body and the inner ring 2 of the bearing rigid body.

[0021] The outer ring substrate 4 and inner ring substrate 8, as well as the outer ring alloy block 6 and inner ring alloy block 10, are all made of tungsten carbide hard alloy material. By using tungsten carbide hard alloy material, the outer ring substrate 4 and inner ring substrate 8, as well as the outer ring alloy block 6 and inner ring alloy block 10, can have high hardness and high wear resistance.

[0022] Tungsten carbide powder is sintered on the surfaces of the outer ring 1 and the inner ring 2 of the bearing. By sintering tungsten carbide powder on the surfaces of the outer ring 1 and the inner ring 2 of the bearing, the overall hardness and wear resistance of the bearing can be significantly improved, and the corrosion resistance of the bearing can be enhanced, making the bearing suitable for various harsh working environments. It can also enhance the load-bearing capacity of the bearing body, enabling it to withstand greater loads and further extend the service life of the bearing.

[0023] This utility model discloses a cemented carbide TC bearing for drilling. During processing, an outer ring keyway 3 and an inner ring keyway 7 are respectively formed on the inner wall of the outer ring 1 and the outer wall of the inner ring 2. The number of keyways is determined by the diameter of the outer ring 1 and the inner ring 2, typically eight. Tungsten carbide powder is sintered onto the surfaces of the outer ring 1 and the inner ring 2. An outer ring substrate 4 and an inner ring substrate 8 are fixedly embedded in the outer ring keyway 3 and the inner ring keyway 7, respectively. Multiple outer ring alloy blocks 6 and inner ring alloy blocks 10 are also fixedly embedded in the outer ring substrate 4 and the inner ring substrate 8, thereby enhancing the bearing's load-bearing capacity and wear resistance, making the bearing more adaptable to the harsh working environment at the bottom of the well.

[0024] The present invention relates to a cemented carbide TC bearing for drilling, the installation method, connection method or setting method of which are all common mechanical methods, and any method that can achieve its beneficial effect can be implemented.

[0025] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A cemented carbide TC bearing for drilling, characterized in that, It includes a bearing outer ring (1) and a bearing inner ring (2) that are fitted together, with the bearing inner ring (2) fitted inside the bearing outer ring (1); The bearing rigid outer ring (1) has multiple sets of outer ring keyways (3) equidistantly arranged on the inner wall of the bearing rigid outer ring (1). An outer ring substrate (4) is fixedly embedded in each set of outer ring keyways (3). Multiple sets of outer ring substrate grooves (5) are equidistantly arranged on the inner side of each set of outer ring substrates (4). An outer ring alloy block (6) is fixedly embedded in each set of outer ring substrate grooves (5). The inner ring (2) of the bearing is provided with multiple sets of inner ring keyways (7) at equal intervals on the outer wall of the inner ring (2), and the number of inner ring keyways (7) is the same as the number of outer ring keyways (3). An inner ring substrate (8) is fixedly embedded in each set of inner ring keyways (7). Multiple sets of inner ring substrate grooves (9) are opened at equal intervals on the outer side of each set of inner ring substrates (8), and the number of inner ring substrate grooves (9) is the same as the number of outer ring substrate grooves (5). An inner ring alloy block (10) is fixedly embedded in each set of inner ring substrate grooves (9).

2. The cemented carbide TC bearing for drilling as described in claim 1, characterized in that, The inner sides of the multiple sets of outer ring substrates (4) and outer ring alloy blocks (6) are all arc-shaped concave surfaces, and the arc-shaped concave surfaces are aligned with the inner wall of the outer ring (1) of the bearing rigid body. The outer sides of the multiple sets of inner ring substrates (8) and inner ring alloy blocks (10) are all arc-shaped convex surfaces, and the arc-shaped convex surfaces are aligned with the outer wall of the inner ring (2) of the bearing rigid body.

3. A cemented carbide TC bearing for drilling as described in claim 2, characterized in that, The outer ring substrate (4) and inner ring substrate (8), as well as the outer ring alloy block (6) and inner ring alloy block (10), are all made of tungsten carbide hard alloy.

4. A cemented carbide TC bearing for drilling as described in claim 3, characterized in that, Tungsten carbide powder is sintered on the surfaces of the outer ring (1) and the inner ring (2) of the bearing.

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