Combination tool for maintaining pumping unit wellhead packing box

Abstract

The invention relates to the technical field of oil pumping unit wellhead maintenance, in particular to a combined tool for maintaining an oil pumping unit wellhead packing box. The problems that an existing pumping unit packing box is time-consuming and labor-consuming to maintain, and threads of a gland of the packing box are prone to being damaged are mainly solved. The box body (1) is internally provided with an oscillation wrench (2), a concentric screw rod wrench (3), a split type barrel-mounted slip (4), a rubber core repairing frame (5), a first barrel-type sealing body wrench (6), a second barrel-type sealing body wrench (7) and a magnetic wrench (8); the concentric lead screw wrench (3) comprises a handle (31), a disc (32) is fixed to the upper end of the handle (31), four sliding ways (34) in the radius direction of the disc are evenly distributed on the disc (32), and stress application button nails (35) are connected to the sliding ways (34). The combined tool is high in specialty, high in repairing quality and high in repairing speed, the maintenance cost and the labor intensity are reduced, and losses caused by overall replacement of the packing box are avoided.

Description

Technical Field

[0001] This invention relates to the field of wellhead repair technology for oil pumping units, specifically a combination tool for repairing packing boxes at the wellhead of oil pumping units. Background Technology

[0002] Wellhead packing boxes and wellhead sealers are prone to severe wear and tear or damage due to prolonged use, requiring timely replacement to ensure their smooth operation and good sealing. Currently, the common maintenance method is to replace the entire packing box and wellhead sealer. However, due to severe corrosion, disassembly and installation of the packing box and wellhead sealer are difficult, posing safety hazards, requiring significant labor, and taking a long time, thus impacting crude oil production. Therefore, having specialized tools for quick and convenient repair and replacement of individual components could reduce maintenance costs and labor intensity, avoiding the substantial losses associated with replacing the entire packing box. With the continuous increase in oilfield extraction costs, on-site maintenance of packing boxes and wellhead sealers is particularly important. Summary of the Invention

[0003] To overcome the shortcomings of existing pumping unit packing box replacement and maintenance methods, such as difficult disassembly and installation, time-consuming and labor-intensive processes, and increased costs, this invention provides a combination tool for repairing pumping unit wellhead packing boxes. This combination tool for repairing pumping unit wellhead packing boxes is highly professional, provides high-quality repairs, and is fast in repair, reducing maintenance costs and labor intensity, and avoiding the losses caused by replacing the entire packing box.

[0004] The technical solution of the present invention is: a combination tool for repairing the packing box of a pumping unit wellhead, comprising a box body, wherein the box body is provided with an oscillating wrench, a concentric screw wrench, a split cylindrical slip, a rubber core repair frame, a first cylindrical sealing body wrench, a second cylindrical sealing body wrench and a magnetic wrench; The concentric screw wrench includes a handle, a fixed disc at the upper end of the handle, four evenly distributed slides along the radius of the disc, and force-applying buttons connected to the slides. The rubber core repair frame includes a base plate, on which a bracket is fixed. A vertically oriented straightening and force-adding screw and a drilling screw are respectively connected to the bracket. A pressure rod is movably connected below the straightening and force-adding screw. A straightening base is fixed on the base plate below the pressure rod, and a drilling fixing seat is fixed on the base plate below the drilling screw.

[0005] Furthermore, a rotatable central wrench is connected to the center of the disc, and the interior of the central wrench has a square hole.

[0006] Furthermore, the split-type cylindrical clamp includes two semi-circular fixed cylinders, with interlocking teeth on the inner walls at both ends of the fixed cylinders, and the two fixed cylinders are connected by an upper fixed lug and a lower fixed lug, respectively.

[0007] Furthermore, the first cylindrical sealing wrench includes a first outer cylinder, one end of which is connected to a first end cap, and the first end cap is connected to the first outer cylinder by a fastening screw. A screw is connected to the center of the end cap, one end of which has a square head and the other end has a round wrench head.

[0008] Furthermore, the first outer cylinder has a large diameter and a small diameter inside, and both of them have threads on their inner walls.

[0009] Furthermore, a stop block is provided on the side of the screw near the round wrench head, and a smooth rod is located between the stop block and the round wrench head.

[0010] Furthermore, the second cylindrical sealing wrench includes a second outer cylinder, one end of which is connected to a second end cap, and the second end cap is connected to the second outer cylinder by a second fastening screw.

[0011] Furthermore, the second outer cylinder has a second outer cylinder major diameter and a second outer cylinder minor diameter inside, and both of them have threads on their inner walls.

[0012] Furthermore, the magnetic wrench includes a base, a slide rod fixed on the base, an impact block slidably connected to the slide rod, and a vibrating gun threadedly connected to the other end of the slide rod.

[0013] Furthermore, the oscillating wrench includes a main body, with an upper baffle fixed at one end and an adjusting nut connected at the other end. A lower baffle is fixed in the middle of the main body, and a sliding hammer that can slide along the main body is provided between the upper baffle and the lower baffle. A circular wrench head is connected to the end of the main body.

[0014] This invention has the following beneficial effects: By adopting the above-mentioned solution, this maintenance tool kit has developed corresponding maintenance tools for various vulnerable parts of the packing box and wellhead sealer. The tools are low in cost, low in labor intensity, and highly efficient. On-site employees can repair and replace various parts of the packing box themselves, eliminating the need for maintenance teams and cranes, thus reducing maintenance costs and labor intensity, minimizing downtime, and creating considerable economic benefits. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the present invention; Figure 2 This is a schematic diagram of an oscillating wrench; Figure 3 This is the front view of the concentric screw wrench; Figure 4 This is the left view of the concentric screw wrench; Figure 5 This is a schematic diagram of a split-type cylindrical slip; Figure 6 This is a schematic diagram of a rubber core repair frame; Figure 7 This is a schematic diagram of the first type of cylindrical sealing wrench; Figure 8 This is a schematic diagram of the second type of cylindrical sealing wrench; Figure 9 This is a schematic diagram of a magnetic wrench; Figure 10 This is a schematic diagram of the combination of the second type of cylindrical sealing wrench and the magnetic wrench.

[0016] In the diagram: 1-Box body, 2-Vibrating wrench, 3-Concentric screw wrench, 4-Split-type cylindrical slip, 5-Rubber core repair frame, 6-First cylindrical sealing body wrench, 7-Second cylindrical sealing body wrench, 8-Magnetic wrench, 21-Upper baffle, 22-Sliding hammer, 23-Main body, 24-Lower baffle, 25-Adjusting nut, 26-Wrench head, 31-Handle, 32-Disc, 33-Center wrench, 34-Slide rail, 35-Loading button, 41-Fixing cylinder, 42-Upper fixing ear, 43-Lower fixing ear, 44-Matching tooth, 51-Base plate, 52- 53-Straightening and force-applying screw, 54-Drilling screw, 55-Drilling fixing seat, 56-Straightening base, 57-Pressure rod, 61-First outer cylinder, 62-First end cap, 63-First fastening screw, 64-Screw, 65-Square head, 66-Round wrench, 67-Stop block, 68-Major diameter of first outer cylinder, 69-Minor diameter of first outer cylinder, 71-Second outer cylinder, 72-Second end cap, 73-Second fastening screw, 74-Minor diameter of second outer cylinder, 75-Major diameter of second outer cylinder, 81-Base, 82-Slide rod, 83-Impact block, 84-Vibration gun. Detailed Implementation

[0017] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. The technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Depend on Figures 1 to 10 As shown, a combination tool for repairing packing boxes at the head of a pumping unit includes a housing 1. The housing 1 is equipped with an oscillating wrench 2, a concentric screw wrench 3, a split-type cylindrical slip 4, a rubber core repair frame 5, a first cylindrical sealing body wrench 6, a second cylindrical sealing body wrench 7, and a magnetic wrench 8. The above tools can be used individually or in combination depending on the different parts of the packing box being repaired.

[0019] The concentric screw wrench 3 includes a handle 31, with a disk 32 fixed to the upper end of the handle 31. The handle 31 is cylindrical to ensure strength under load. The disk 32 should not be too thin to ensure strength. A center wrench 33 is provided at the center of the disk 32, located in the central hole of the disk 32, and can rotate relative to the disk 32. The center wrench 33 has a square hole inside, and the cylinder is perpendicular to the surface of the disk 32. During processing, the center wrench 33 can be processed in parts, with one end passing through the central hole of the disk 32 and then welded to the other end, so that it can rotate on the disk 32 without falling off.

[0020] The disc 32 has four evenly distributed slides 34 along its radius. Each slide 34 is a through hole, and each through hole contains a torque nut 35. One end of the torque nut 35 has a boss with a diameter larger than the width of the slide 34, and the other end of the torque nut 35 has a thread. The torque nut 35 and the slide 34 are in clearance fit, allowing the torque nut 35 to pass through the slide 34 at one end and be suspended on the surface of the disc 32 at the other end. In this concentric screw wrench 3, the torque nut 35 rotates under the action of the handle 31, while the center wrench 33 can rotate separately from the torque nut 35. When disassembling the sealing plug of the well sealer, a concentric screw wrench 3 can be used. Adjust the position of the torque wrench 35 according to the circumference of the sealing plug removal hole so that the torque wrench 35 can be inserted into the removal hole. At this time, the center wrench 33 is placed on the screw. Turn the handle 31 to drive the torque wrench 35 and the sealing plug to rotate together. During this process, turn the center wrench 33 according to the force on the handle 31 to adjust the direction and position of the screw, so that a reasonable gap is formed between the screw and the sealing plug, thereby removing the sealing plug.

[0021] The rubber core repair frame 5 includes a base plate 51, on which a bracket 52 is fixed. The bracket 52 includes four columns, which are located at the four corners of the base plate 51. The tops of the columns are connected by a top plate. A vertical straightening and force-increasing screw 53 and a drilling screw 54 are respectively connected to the top plate of the bracket 52. Two nuts can be welded to the top plate, and the straightening and force-increasing screw 53 and the drilling screw 54 are respectively connected to their corresponding nuts. The bottom of the straightening and force-increasing screw 53 is movably connected to a pressure rod 57. When the straightening and force-increasing screw 53 rotates, the pressure rod 57 can remain stationary. A crossbar is fixed to the outside of the pressure rod 57. When the rubber core is compressed, the crossbar is engaged in the groove of the rubber core. A centering base 56 is fixed on the base plate 51 below the pressure rod 57. The centering base 56 includes two support blocks, and a support plate is fixed on the upper part of the two support blocks. The support plate is a concave arc surface in the middle, and the arc direction should ensure that the workpiece can be easily placed on it. A drilling fixing seat 55 is fixed on the base plate 51 below the drilling screw 54. The drilling fixing seat 55 has support blocks on both sides, and a support plate is fixed on the upper part of the support blocks. The support plate has a through hole in the middle. The drilling screw 54 is used to drill holes in the rubber core so that the fixing screw hole of the rubber core corresponds to the threaded hole of the sealing body. When the sealing body and the rubber core need to be installed together, the sealing body is placed on the centering base 56, the rubber core is placed on the sealing body, the pressure rod 57 is located above the rubber core, and the centering force screw 53 is rotated. The centering force screw 53 rotates and presses down at the same time, driving the pressure rod 57 downward, thereby pressing the rubber core into the sealing body.

[0022] The split-type cylindrical clamp 4 includes two semi-circular fixed cylinders 41. The length of the fixed cylinder 41 should not be too long, and its thickness should not be too thick while ensuring strength. The inner walls at both ends of the fixed cylinder 41 are respectively provided with interlocking teeth 44, and the middle inner wall is smooth. The interlocking teeth 44 are teeth along the axial direction of the fixed cylinder, and the working surfaces of the interlocking teeth 44 are hardened. The two ends of the two fixed cylinders 41 are respectively provided with upper fixing ears 42 and lower fixing ears 43. In use, the fixed cylinder 41 is wrapped around the bottom of the packing box, the interlocking teeth 44 engage with the pressure ring, and the opposing fixing ears are connected by bolts, allowing the interlocking teeth 44 to clamp the packing box pressure ring and then disassemble.

[0023] The first cylindrical sealing wrench 6 includes a first outer cylinder 61, which is a stepped cylinder. The first outer cylinder 61 has a large diameter 68 and a small diameter 69 inside, and both have threads on their inner walls. A first end cap 62 is provided inside one end of the small diameter of the first outer cylinder 61, and the first end cap 62 is connected to the first outer cylinder 61 by four fastening screws 63, which are evenly distributed along the circumference. After tightening the fastening screws 63, the first end cap 62 is fixed to the outer cylinder.

[0024] A screw 64 is connected to the center of the first end cap 62. One end of the screw 64 is a square head 65, and the other end is provided with a round wrench 66. The square head 65 is located at the small diameter end of the first outer cylinder. A stop block 67 is provided on the side of the screw 64 near the round wrench 66, and there is a smooth rod between the stop block 67 and the round wrench 66.

[0025] The first cylindrical sealing body wrench 6 is used to disassemble the sealing plug body of the well sealer. When in use, the first outer cylinder is threadedly connected to the well sealer body. The round wrench 66 on the screw 64 is locked in the center hole of the sealing plug. The other end of the screw 64 passes through the first end cap 62. The wrench is held on the square head 65. By rotating the screw 64, the sealing body can be removed.

[0026] The second cylindrical sealing body wrench 7 includes a second outer cylinder 71. The second outer cylinder 71 has a second outer cylinder major diameter 75 and a second outer cylinder minor diameter 74 inside, both with threads on their inner walls. A second end cap 72 is provided at one end of the minor diameter of the second outer cylinder 71, and the second end cap 72 is connected to the inside of the second outer cylinder 71 by a second fastening screw 73. When the sealing body has a lead screw, if it is necessary to disassemble the sealing body, connect the second outer cylinder 71 to the well-sealing device body thread, connect the second end cap 72 to the lead screw inside the sealing body, tighten the second fastening screw 73, and rotate the lead screw to remove the sealing body.

[0027] The magnetic wrench 8 includes a base 81, on which a slide rod 82 is fixed. An impact block 83 is slidably connected to the slide rod 82. In use, the other end of the slide rod 82 is threadedly connected to a vibrating gun 84. The magnetic wrench 8 can be used in combination with a first cylindrical sealing wrench 6. In this case, the screw 64 in the first cylindrical sealing wrench 6 is removed, and one threaded end of the slide rod 82 is connected to the first end cap 62. One end of the base 81 is located at the large diameter end of the first outer cylinder 61, and the vibrating gun 84 is then connected to the end of the slide rod 82. Figure 10 As shown. When the central hole of the sealing body is damaged and the round wrench 66 cannot be locked in the central hole, the screw 44 is removed, the magnetic wrench 8 is connected to the first outer cylinder 61 of the first cylindrical sealing body wrench 6, so that the base 81 is pressed against the end face of the sealing body, the magnetic wrench 8 is activated, and vibration is generated to remove the sealing body.

[0028] The vibrating wrench 2 includes a main body 23. One end of the main body 23 is fixed with an upper baffle 21, and the other end is connected to an adjusting nut 25. A lower baffle 24 is fixed in the middle of the main body 23. A sliding hammer 22 is provided between the upper baffle 21 and the lower baffle 24, which can slide along the main body. The sliding hammer 22 can slide between the upper and lower baffles 24. A circular wrench head 26 is connected to the end of the main body 23. The thickness and diameter of the wrench head 26 match the sealing plug groove of the well sealer. When there are no threads on the outside of the well sealer, and the first cylindrical sealing body wrench 6 and the second cylindrical sealing body wrench 7 cannot be fixed, the vibrating wrench 2 is used. The wrench head 26 is placed into the central hole of the sealing body, and the adjusting nut 25 is tightened to lock the wrench head 26 to the sealing body. The sliding hammer 22 is moved, and when the sliding hammer 22 hits the upper baffle 21, it vibrates, thereby removing the sealing body.

[0029] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or technical improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A combination tool for repairing packing boxes at the head of oil pumping units, comprising a housing (1), characterized in that: The housing (1) is equipped with an oscillating wrench (2), a concentric screw wrench (3), a split cylindrical slip (4), a rubber core repair frame (5), a first cylindrical sealing body wrench (6), a second cylindrical sealing body wrench (7), and a magnetic wrench (8). The concentric screw wrench (3) includes a handle (31), a fixed disc (32) at the upper end of the handle (31), and four slides (34) evenly distributed on the disc (32) along the radial direction of the disc. A force-applying button (35) is connected to the slide (34). The rubber core repair frame (5) includes a base plate (51), a bracket (52) is fixed on the base plate (51), a vertical straightening and force-adding screw (53) and a drilling screw (54) are respectively connected on the bracket (52), a pressure rod (57) is movably connected below the straightening and force-adding screw (53), a straightening base (56) is fixed on the base plate (51) below the pressure rod (57), and a drilling fixing seat (55) is fixed on the base plate (51) below the drilling screw (54).

2. The combination tool for repairing the packing box at the wellhead of an oil pumping unit according to claim 1, characterized in that: The center of the disc (32) is connected to a rotatable center wrench (33), and the center wrench (33) has a square hole inside.

3. The combination tool for repairing the packing box at the wellhead of an oil pumping unit according to claim 1, characterized in that: The split-type cylindrical clamp (4) includes two semi-circular fixed cylinders (41), with cleaving teeth (44) on the inner walls at both ends of the fixed cylinders (41), and the two fixed cylinders (41) are connected to each other by an upper fixed ear (42) and a lower fixed ear (43).

4. The combination tool for repairing the packing box at the head of a pumping unit according to claim 1, characterized in that: The first cylindrical sealing wrench (6) includes a first outer cylinder (61), one end of which is connected to a first end cap (62), and the first end cap (62) is connected to the first outer cylinder (61) by a fastening screw (63). A screw (64) is connected to the center of the end cap (62), one end of which is a square head (65), and the other end is provided with a round wrench head (66).

5. The combination tool for repairing the packing box at the head of a pumping unit according to claim 4, characterized in that: The first outer cylinder (61) has a first outer cylinder major diameter (68) and a first outer cylinder minor diameter (69) inside, and both of them have threads on their inner walls.

6. The combination tool for repairing the packing box at the wellhead of an oil pumping unit according to claim 5, characterized in that: A stop (67) is provided on the side of the screw (64) near the round wrench (66), and there is a smooth rod between the stop (67) and the round wrench (66).

7. The combination tool for repairing the packing box at the head of a pumping unit according to claim 1, characterized in that: The second cylindrical sealing wrench (7) includes a second outer cylinder (71), one end of which is connected to a second end cap (72), and the second end cap (72) is connected to the second outer cylinder (71) by a second fastening screw (73).

8. The combination tool for repairing the packing box at the head of a pumping unit according to claim 7, characterized in that: The second outer cylinder (71) has a second outer cylinder major diameter (75) and a second outer cylinder minor diameter (74) inside, and both of them have threads on their inner walls.

9. The combination tool for repairing the packing box at the head of a pumping unit according to claim 1, characterized in that: The magnetic wrench (8) includes a base (81), a fixed slide rod (82) on the base (81), an impact block (83) slidably connected on the slide rod (82), and a vibrating gun (84) threadedly connected to the other end of the slide rod (82).

10. The combination tool for repairing the packing box at the head of a pumping unit according to claim 1, characterized in that: The vibrating wrench (2) includes a main body (23), with an upper baffle (21) fixed at one end and an adjusting nut (25) connected at the other end. A lower baffle (24) is fixed in the middle of the main body (23), and a sliding hammer (22) that can slide along the main body is provided between the upper baffle (21) and the lower baffle (24). A circular wrench head (26) is connected to the end of the main body (23).

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