Petroleum drill rod inner welding ring removing device

Abstract

The utility model relates to a petroleum drill rod inner welding ring removing device, which belongs to the field of petroleum drill rods, and comprises a mounting seat, a telescopic device, a removing mechanism and a polishing device, the mounting seat is provided with a clamping groove for placing a drill rod, and the clamping groove is of a step-shaped structure and is used for clamping the drill rod; the telescopic device is slidably arranged on the mounting seat; the removing mechanism is arranged on the telescopic device and is arranged at the clamping groove in a sliding manner; the grinding device is rotationally arranged on the removing mechanism, and a driving mechanism used for driving the grinding device to rotate is arranged on the telescopic device. The removing device comprises a supporting rod arranged on the sliding frame and a stamping knife arranged at the end, away from the sliding frame, of the supporting rod. The mounting seat matched with the drill rod in structure is designed, the drill rod is fixed through interaction force of the removing mechanism and the mounting seat, additional fixing is not needed, and burrs are polished after a welding ring is removed.

Description

Technical Field

[0001] The utility model relates to the field of oil drill pipes, in particular to a device for removing the inner welding ring of an oil drill pipe. Background Art

[0002] The drill pipe is a steel pipe with a threaded tail end, which is used to connect the surface equipment of the drilling rig and the drilling and grinding equipment or bottom hole device at the bottom of the well. Its purpose is to transport drilling mud to the drill bit. When processing the drill pipe, the joint and the pipe body need to be connected as a whole. Therefore, the joint and the pipe body need to be welded at the joint position. After welding, an inner weld ring will be generated on the inner wall of the drill pipe. This weld ring needs to be cleaned before it can be used, so an inner weld ring removal device is required.

[0003] Chinese patent publication number CN216575082U discloses a device for removing the inner weld ring of a petroleum drill pipe, which relates to the technical field of petroleum drill pipe processing, and solves the problem that the current device for removing the inner weld ring of a petroleum drill pipe is time-consuming and labor-intensive to fix the petroleum drill pipe, and the operation is cumbersome, comprising a support base plate; a group of lower fixing seats are fixedly arranged on the top left side of the support base plate; a group of support frames are fixedly arranged on the front and rear sides of the lower fixing seats; an upper fixing seat is slidably installed between the two groups of the support frames; two springs are also arranged on the outside of the two groups of the support frames; a hydraulic cylinder is fixedly installed on the top right side of the support base plate through a fixing frame; a punch rod is fixedly connected to the left end of the hydraulic cylinder; a group of pressure arms are also connected to the front and rear sides of the left end of the inner cylinder body of the hydraulic cylinder. This device can clamp and fix the petroleum drill pipe in advance when punching and removing the inner weld ring, and can automatically release it after the punch rod is pulled out, without the need for separate operation, and the operation is simpler and more convenient.

[0004] However, the above technical solution has a complex structure and takes a long time to operate. The drill rod needs to be fixed first before the inner welding ring can be removed. Utility Model Content

[0005] The purpose of the utility model is to address the problems existing in the background technology and to propose a mounting seat designed to match the drill pipe structure. The mounting seat is fixed by removing the interaction force between the mechanism and the mounting seat without the need for additional fixation. After the welding ring is removed, the burrs are ground off.

[0006] The technical solution of the utility model is: a device for removing the inner welding ring of a petroleum drill pipe, comprising:

[0007] A mounting base having a snap-in slot;

[0008] A telescopic device, slidably arranged on a mounting seat;

[0009] A removal mechanism is arranged on the telescopic device and is slidably arranged at the clamping groove;

[0010] The grinding device is rotatably arranged on the removing mechanism, and the telescopic device is provided with a driving mechanism for driving the grinding device to rotate.

[0011] Preferably, the telescopic device comprises a guide rail slidably arranged on the mounting seat, a sliding frame arranged on the guide rail, and a telescopic cylinder arranged on the mounting seat for driving the sliding frame to move.

[0012] Preferably, the removal device comprises a support rod arranged on the sliding frame, and a punching knife arranged on an end of the support rod away from the sliding frame.

[0013] Preferably, the grinding device comprises a rotating rod rotatably arranged on the support rod, a rotating disk arranged on the rotating rod, and a plurality of grinding heads which are all arranged on the rotating disk.

[0014] Preferably, the driving mechanism includes a driving motor arranged on the sliding frame, a driving gear connected to the output end of the driving motor, and a driven gear arranged on the rotating rod; the driving gear is meshingly connected with the driven gear.

[0015] Preferably, a receiving groove is provided on the rotating disk, and the rotating disk is slidably arranged in the receiving groove. An abutment bolt is provided on the rotating disk, and the abutment bolt is threadedly connected to the rotating disk and abuts against the grinding head.

[0016] Preferably, the mounting seat is provided with a guide groove, and a plurality of guide grooves and guide rails are provided, the shape of the guide rail matches the guide groove, and the guide rail is embedded in the guide groove.

[0017] Compared with the prior art, the utility model has the following beneficial technical effects:

[0018] The utility model inserts a punch into the drill pipe to remove the inner welding ring of the drill pipe. After the removal is completed, the grinding device is moved to the position where the inner welding ring is located, and the grinding device is driven to rotate by the driving mechanism so that the grinding device grinds the burrs generated during the removal. The clamping groove of the step-type structure can be directly clamped on the drill pipe without the use of additional fixing equipment, and it only needs to be stabilized during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0020] Figure 2 It is a schematic diagram of the partial structure of an embodiment of the utility model;

[0021] Figure 3 It is a partial structural cross-sectional view of an embodiment of the present utility model.

[0022] Figure numerals: 1, mounting seat; 101, snap-on groove; 102, guide groove; 2, sliding frame; 3, guide rail; 4, punch; 5, support rod; 6, grinding device; 601, rotating rod; 602, rotating disk; 603, grinding head; 604, abutment bolt; 7, driving mechanism; 701, driving motor; 702, driving gear; 703, driven gear; 8, telescopic cylinder. DETAILED DESCRIPTION

[0023] Embodiment 1

[0024] like Figure 1-Figure 3 As shown, the utility model provides a device for removing the inner welding ring of a petroleum drill pipe, which comprises a mounting seat 1, a telescopic device, a removing mechanism and a grinding device 6.

[0025] The mounting seat 1 is provided with a clamping groove 101 for placing a drill rod, and the clamping groove 101 is a step-shaped structure and is used to clamp the drill rod; the telescopic device is slidably arranged on the mounting seat 1; the removal mechanism is arranged on the telescopic device and slidably arranged at the clamping groove 101; the grinding device 6 is rotatably arranged on the removal mechanism, and the telescopic device is provided with a driving mechanism 7 for driving the grinding device 6 to rotate. The removal device includes a support rod 5 arranged on the sliding frame 2, and a punching knife 4 arranged on the end of the support rod 5 away from the sliding frame 2; the punching knife is a conical structure, which can increase the strength of the blade and avoid deformation.

[0026] In this embodiment, when not in use, the sliding frame 2 is moved to a position that fits the mounting seat 1, so that the punching knife 4 is moved to the top of the clamping groove 101, which can reduce the occupied space and facilitate storage; when in use, the sliding frame 2 is first driven by the telescopic cylinder 8 to move in the direction away from the mounting seat 1, so that the sliding frame 2 drives the support rod 5 and the punching knife 4 to move, so that the clamping groove 101 can be exposed, and the mounting seat 1 is moved to the end of the drill rod, so that the drill rod is clamped in the clamping groove 101 to support the drilling, and the sliding frame 2 is driven by the telescopic cylinder 8 to move, and the sliding frame 2 is driven to move. The frame 2 drives the support rod 5 and the punch 4 to move, so that the punch 4 is inserted into the drill rod to remove the inner welding ring of the drill rod. After the removal is completed, the grinding device 6 is moved to the position of the inner welding ring, and the grinding device 6 is driven to rotate by the driving mechanism 7, so that the grinding device 6 grinds the burrs generated during the removal; the step-type structure of the clamping groove 101 can be directly clamped on the drill rod, because the force generated by the punch 4 acts relatively on the mounting seat 1, so that the drill rod can be fixed without using additional fixing equipment, and it only needs to be stabilized during use.

[0027] Embodiment 2

[0028] like Figure 1-Figure 3As shown, the utility model proposes a device for removing the inner welding ring of a petroleum drill pipe. Compared with the first embodiment, the telescopic device in this embodiment includes a guide rail 3 slidably arranged on the mounting seat 1, a sliding frame 2 arranged on the guide rail 3, and a telescopic cylinder 8 arranged on the mounting seat 1 for driving the sliding frame 2 to move. The mounting seat 1 is provided with a guide groove 102, and the guide groove 102 and the guide rail 3 are both provided with a plurality of guide grooves. The shape of the guide rail 3 matches the guide groove 102, and the guide rail 3 is embedded in the guide groove 102.

[0029] In this embodiment, the sliding frame 2 is driven to move by the telescopic cylinder 8, and the sliding frame 2 drives the guide rail 3 to move. The guide rail 3 slides in the guide groove 102, and the guide groove 102 supports and guides the guide rail 3 so that the guide rail 3 can move smoothly. When not in use, the guide rail 3 is stored in the mounting seat 1, and the punch 4 is located in the clamping groove 101, which can reduce the occupied space and facilitate storage. When in use, the sliding frame 2 is first extended, and the drill rod is clamped in the clamping groove 101.

[0030] Embodiment 3

[0031] like Figure 1-Figure 3 As shown, the present invention proposes a device for removing the inner welding ring of a petroleum drill pipe. Compared with the first or second embodiment, the grinding device 6 in this embodiment includes a rotating rod 601 rotatably arranged on the support rod 5, a rotating disk 602 arranged on the rotating rod 601, and a plurality of grinding heads 603 arranged on the rotating disk 602. The driving mechanism 7 includes a driving motor 701 arranged on the sliding frame 2, a driving gear 702 connected to the output end of the driving motor 701, and a driven gear 703 arranged on the rotating rod 601; the driving gear 702 is meshedly connected with the driven gear 703. A receiving groove is arranged on the rotating disk 602, and the rotating disk 602 is slidably arranged in the receiving groove. An abutting bolt 604 is arranged on the rotating disk 602, and the abutting bolt 604 is threadedly connected to the rotating disk 602 and abuts against the grinding head 603.

[0032] In this embodiment, the driving motor 701 drives the active gear 702 to rotate, the active gear 702 drives the driven gear 703 to rotate, the driven gear 703 drives the rotating rod 601 to rotate, the rotating rod 601 drives the rotating disk 602 to rotate, and the rotating disk 602 drives the grinding head 603 to rotate, so that the grinding head 603 can grind the inner wall of the drill pipe. By loosening the abutment bolt 604, the grinding head 603 can slide on the rotating disk 602 to adjust the grinding diameter. After the adjustment is completed, the abutment bolt 604 is tightened and abutted against the grinding head 603, so that the burrs generated after the punch 4 is removed can be polished clean.

[0033] The implementation modes of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A device for removing the inner welding ring of a petroleum drill pipe, characterized in that: include: A mounting seat (1) having a snap-on groove (101); A telescopic device, slidably arranged on the mounting seat (1); A removal mechanism is arranged on the telescopic device and is slidably arranged at the clamping groove (101); The grinding device (6) is rotatably arranged on the removal mechanism, and the telescopic device is provided with a driving mechanism (7) for driving the grinding device (6) to rotate.

2. The device for removing the inner welding ring of a petroleum drill pipe according to claim 1, characterized in that: The telescopic device comprises a guide rail (3) slidably arranged on a mounting seat (1), a sliding frame (2) arranged on the guide rail (3), and a telescopic cylinder (8) arranged on the mounting seat (1) for driving the sliding frame (2) to move.

3. The device for removing the inner welding ring of a petroleum drill pipe according to claim 2, characterized in that: The removal device comprises a support rod (5) arranged on the sliding frame (2), and a punching knife (4) arranged on an end of the support rod (5) away from the sliding frame (2).

4. The device for removing the inner welding ring of a petroleum drill pipe according to claim 3, characterized in that: The grinding device (6) comprises a rotating rod (601) rotatably arranged on the support rod (5), a rotating disk (602) arranged on the rotating rod (601), and a plurality of grinding heads (603) all arranged on the rotating disk (602).

5. The device for removing the inner welding ring of a petroleum drill pipe according to claim 4, characterized in that: The driving mechanism (7) comprises a driving motor (701) arranged on the sliding frame (2), a driving gear (702) connected to the output end of the driving motor (701), and a driven gear (703) arranged on the rotating rod (601); the driving gear (702) is meshingly connected with the driven gear (703).

6. The device for removing the inner welding ring of a petroleum drill pipe according to claim 4, characterized in that: The rotating disk (602) is provided with a receiving groove, the rotating disk (602) is slidably arranged in the receiving groove, and the rotating disk (602) is provided with an abutment bolt (604), the abutment bolt (604) is threadedly connected to the rotating disk (602) and abuts against the grinding head (603).

7. The device for removing the inner welding ring of a petroleum drill pipe according to claim 2, characterized in that: The mounting seat (1) is provided with a guide groove (102), and a plurality of guide grooves (102) and guide rails (3) are provided. The shape of the guide rail (3) matches the guide groove (102), and the guide rail (3) is embedded in the guide groove (102).

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