A tool for servicing an oilfield injection pump

Abstract

The utility model provides a kind of oilfield water injection pump maintenance tool, it is related to oilfield water injection pump maintenance technical field, including handle and righting friction piece, the handle surface is equipped with annular groove, the annular groove is slidably connected with the lifting frame sliding along handle length direction, and the lifting frame rotates along annular groove center line direction, position transformation is used to lifting frame, realize the position adjustment of inside righting friction piece, therefore after this device is inserted into the component inside water injection pump, rotate, lift and realize the righting friction piece of one of hole passage in inner wall of component by lifting frame in annular groove, then realize inside rack movement by inside tooth ring rotation in lifting, and then inside rack movement is pushed into hole passage by righting friction piece, prevent unnecessary abrasion on the surface of righting friction piece.

Description

Technical Field

[0001] This utility model relates to the field of oilfield water injection pump repair technology, and in particular to an oilfield water injection pump repair tool. Background Technology

[0002] Oilfield water injection pumps are an indispensable piece of equipment in the oilfield extraction process. They are mainly used to inject water into the bottom of oil wells via a high-pressure pump, creating a water column pressure that drives crude oil to the surface, thereby increasing oilfield production. However, after prolonged use, water injection pumps require regular inspection and maintenance.

[0003] Therefore, a multi-functional repair tool for water pumps, published in the prior art (CN208068178U), involves passing the tool through the center of the component to be removed, with the tool's support claw positioned below the component. At this point, the aligning friction plate is tightly supported within the relevant channels of the pump head. Simultaneously, the lead screw is rotated, causing the support cone to move downwards, opening the support claw and placing it on the end face of the component to be removed. The fixing flange is then fixed to the pump head with bolts. Finally, rotating the turntable causes the lead screw to move upwards relative to the fixing flange, allowing the corresponding water pump components to be removed.

[0004] However, during the time it takes for the tool to insert into the center of gravity of the component and enter the relevant channel of the pump head, the straightening friction plate comes into contact with the inside of the pump head. Because the elastic force of the spring will force the straightening friction plate to rub against the inner wall of the pump head, it is easy to cause wear on the surface of the straightening friction plate, and this wear is unnecessary. Utility Model Content

[0005] The purpose of this utility model is to solve the problems existing in the prior art by proposing a maintenance tool for oilfield water injection pumps.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an oilfield water injection pump maintenance tool, comprising a handle and a straightening friction plate, wherein an annular groove is provided on the surface of the handle, a lifting frame that slides along the length of the handle is slidably connected in the annular groove, and the lifting frame rotates along the center line of the annular groove, an inner toothed ring is rotatably connected to the bottom of the lifting frame, and an inner toothed rack that meshes with the tooth surface of the inner toothed ring is inserted into the side wall of the lifting frame, the straightening friction plate is installed on the side of the inner toothed rack, and the edge of the lifting frame opening is offset from the opening of the annular groove.

[0007] Preferably, the bottom and top of the annular groove are rotatably connected to outer toothed rings, and the opposite faces of the two outer toothed rings are fixedly connected to several connecting shafts, one of which passes through the top of the lifting frame. The sidewall of the annular groove is embedded with a gear shaft that meshes with the two outer toothed rings.

[0008] Preferably, the two outer toothed rings are rotatably connected to a lead screw and a rectangular column, the lead screw and the rectangular column respectively threaded through the top of the lifting frame and through the top of the inner toothed ring.

[0009] Preferably, one end of the lead screw, the rectangular column, and the gear shaft all extend to one end of the handle armrest and are fixedly connected to fixed seats of equal height. One end of the handle armrest is fixedly connected to a plurality of screws arranged in a circular array, and a pressure ring for engaging the fixed seat is sleeved on the plurality of screws.

[0010] Preferably, one end of the pressure ring is rotatably connected to a nut threadedly connected to one of the screws, and the other end is fixedly connected to an anti-slip pad for engaging with the end face of the fixed seat.

[0011] Preferably, a plurality of mounting grooves are provided at the bottom edge of the outer side wall of the handle, and a gear is rotatably connected in the mounting groove. A locking block is fixedly connected to the side of the gear, which slides with the wall of the mounting groove and is used to fix the position of the handle.

[0012] Preferably, a central rack that meshes with a gear is provided through one end of the handle armrest.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0014] In this invention, the position of the internal straightening friction plate is adjusted by changing the position of the lifting frame. Therefore, after the device is inserted into the component of the water pump, the lifting frame rotates and rises in the annular groove to realize one of the holes in the inner wall of the component for the straightening friction plate. Then, the inner toothed ring inside the lifting frame rotates to realize the movement of the inner rack, and then the movement of the inner rack pushes the straightening friction plate into the hole, preventing unnecessary wear on the surface of the straightening friction plate. Attached Figure Description

[0015] Figure 1 A three-dimensional structural diagram of an oilfield water injection pump maintenance tool is provided for this utility model;

[0016] Figure 2 This utility model proposes a repair tool for oilfield water injection pumps. Figure 1 A schematic diagram of the cross-sectional structure;

[0017] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0018] Figure 4 for Figure 2 Enlarged view of point B in the middle;

[0019] Figure 5 for Figure 2 Enlarged view of point C in the middle.

[0020] Legend: 1. Handle; 2. Annular groove; 3. Lifting frame; 4. Outer toothed ring; 5. Pressure ring; 6. Central rack; 7. Gear shaft; 8. Lead screw; 9. Rectangular column; 10. Fixing seat; 11. Anti-slip pad; 12. Screw; 13. Connecting shaft; 14. Gear; 15. Locking block; 16. Straightening friction plate; 17. Inner toothed ring; 18. Inner rack; 19. Mounting groove. Detailed Implementation

[0021] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0023] like Figure 1-5 As shown, a maintenance tool for an oilfield water injection pump includes a handle 1 and a straightening friction plate 16. An annular groove 2 is formed on the surface of the handle 1. A lifting frame 3, which slides along the length of the handle 1, is slidably connected in the annular groove 2. The lifting frame 3 rotates along the center line of the annular groove 2. An inner toothed ring 17 is rotatably connected to the bottom of the lifting frame 3. An inner toothed rack 18, which meshes with the tooth surface of the inner toothed ring 17, is inserted into the side wall of the lifting frame 3. The straightening friction plate 16 is installed on the side of the inner toothed rack 18. The edge of the lifting frame 3 is offset from the opening of the annular groove 2. By changing the position of the lifting frame 3, the position of the straightening friction plate 16 inside can be adjusted. Therefore, after the device is inserted into the component of the water injection pump, the lifting frame 3 rotates and rises in the annular groove 2 to realize one of the holes in the inner wall of the component corresponding to the straightening friction plate 16. Then, the inner toothed ring 17 in the lifting frame 3 rotates to move the inner toothed rack 18, and the movement of the inner toothed rack 18 pushes the straightening friction plate 16 into the hole.

[0024] Further discussion reveals that, to achieve the rotation and lifting of the lifting frame 3: Outer toothed rings 4 are rotatably connected to the bottom and top of the annular groove 2. Several connecting shafts 13 are fixedly connected to the opposite faces of the two outer toothed rings 4, with one of the connecting shafts 13 penetrating the top of the lifting frame 3. A gear shaft 7, rotatably connected to the two outer toothed rings 4, is embedded in the side wall of the annular groove 2. The connecting shafts 13 are used to fix the relative positions of the two outer toothed rings 4, achieving synchronous rotation. The rotation of the gear shaft 7 enables the two meshing outer toothed rings 4 to rotate simultaneously, thus ensuring uniform force distribution. The rotation of the two outer toothed rings 4 also enables the rotation of the connecting shafts 13. The lifting frame 3, which is sleeved on the connecting shaft 13, rotates within the annular groove 2. The two outer toothed rings 4 are also rotatably connected to the opposite surfaces of the lead screw 8 and the rectangular column 9. The lead screw 8 and the rectangular column 9 are threaded through the top of the lifting frame 3 and through the top of the lifting frame 3 and through the top of the inner toothed ring 17, respectively. With the auxiliary effect of the connecting shaft 13 penetrating the lifting frame 3, and in conjunction with the lead screw 8 threaded through the lifting frame 3, the lifting frame 3 can be prevented from rotating around the connecting shaft 13. Therefore, by rotating the lead screw 8, the lifting frame 3 can be raised and lowered along the surface of the connecting shaft 13 and the rectangular column 9, while by rotating the rectangular column 9, the inner toothed ring 17 can be rotated.

[0025] Further discussion: To fix the position of the lifting frame 3, one end of the lead screw 8, the rectangular column 9, and the gear shaft 7 all extend to one end of the handle 1 armrest and are fixedly connected to fixed seats 10 of equal height. One end of the handle 1 armrest is fixedly connected to several screws 12 arranged in a circular array. Each screw 12 is fitted with a pressure ring 5 for engaging with the fixed seat 10. One end of the pressure ring 5 is rotatably connected to a nut threaded onto one of the screws 12, and the other end is fixedly connected to an anti-slip pad 11 for engaging with the end face of the fixed seat 10. The edge of the end face has several protrusions. Therefore, by rotating the fixed seat 10, the corresponding connected lead screw 8, rectangular column 9 and gear shaft 7 can be rotated. By rotating the nut on the surface of the pressure ring 5, the pressure ring 5 can be lowered to the surface of the anti-slip pad 11 on the end face and tightly fit against the protrusions on the surface of the fixed seat 10, thereby preventing the fixed seat 10 from rotating. In addition, when the lead screw 8 and rectangular column 9 rotate, the fixed seat 10 on its end face rotates around the center of the pressure ring 5, and the lead screw 8 and rectangular column 9 rotate around the top position of the handle 1 surface.

[0026] Further discussion: Several mounting slots 19 are provided on the bottom edge of the outer wall of the handle 1. Gears 14 are rotatably connected in the mounting slots 19. A locking block 15 is fixedly connected to the side of the gear 14, which slides against the wall of the mounting slot 19 and is used to fix the position of the handle 1. A central rack 6 is provided through one end of the handle 1 and meshes with the gear 14. As shown in the figure, the surface of the central rack 6 is hollow near the top surface. A bolt is provided on the handle 1 through the hollow. Therefore, by raising and lowering the central rack 6 in the handle 1, the meshing gear 14 can be passively rotated, thereby making the locking block 15 swing. One side of the locking block 15 extends out of the mounting slot 19. When the handle 1 is lifted, the extended end of the locking block 15 hooks the side of the component to achieve component disassembly.

[0027] The working principle is as follows: The handle 1 is placed inside the part to be removed on the water pump. Based on the position of the hole in the inner wall of the part, the gear shaft 7 and lead screw 8 are rotated sequentially to adjust the position of the lifting frame 3 within the annular groove 2. This aligns the straightening friction plate 16 inside the lifting frame 3 with the hole in the inner wall of the part. Then, the inner gear ring 17 is rotated by rotating the rectangular column 9, which in turn moves the inner rack 18, allowing the straightening friction plate 16 to be inserted into the hole. This fixes the relative position of the part and the handle 1. The position of the gear shaft 7, lead screw 8, and rectangular column 9 is then fixed by the pressure ring 5. Finally, the locking block 15 hooks onto the side wall of the part, allowing for its removal.

[0028] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A maintenance tool for an oilfield water injection pump, comprising a handle (1) and a centering friction plate (16), characterized in that: The handle (1) has an annular groove (2) on its surface. A lifting frame (3) that slides along the length of the handle (1) is slidably connected in the annular groove (2). The lifting frame (3) rotates along the center line of the annular groove (2). An inner toothed ring (17) is rotatably connected to the bottom of the lifting frame (3). An inner toothed rack (18) that meshes with the tooth surface of the inner toothed ring (17) is inserted into the side wall of the lifting frame (3). The straightening friction plate (16) is installed on the side of the inner toothed rack (18). The edge of the lifting frame (3) is misaligned with the opening of the annular groove (2).

2. The oilfield water injection pump repair tool according to claim 1, characterized in that: The bottom and top of the annular groove (2) are rotatably connected to an outer toothed ring (4). The opposite surfaces of the two outer toothed rings (4) are fixedly connected to several connecting shafts (13), and one of the connecting shafts (13) passes through the top of the lifting frame (3). The side wall of the annular groove (2) is embedded with a gear shaft (7) that meshes with the two outer toothed rings (4).

3. The oilfield water injection pump repair tool according to claim 2, characterized in that: The two outer toothed rings (4) are also rotatably connected to a lead screw (8) and a rectangular column (9) on their opposite faces. The rectangular column (9) is threaded through the top of the lifting frame (3) and through the top of the inner toothed ring (17).

4. The oilfield water injection pump repair tool according to claim 3, characterized in that: One end of the lead screw (8), the rectangular column (9) and the gear shaft (7) extends to one end of the handle (1) armrest and is fixedly connected to a fixed seat (10) of equal height. One end of the handle (1) armrest is fixedly connected to a number of screws (12) arranged in a ring array. A pressure ring (5) for engaging the fixed seat (10) is sleeved on the number of screws (12).

5. The oilfield water injection pump repair tool according to claim 4, characterized in that: One end of the pressure ring (5) is rotatably connected to a nut that is threaded to one of the screws (12), and the other end is fixedly connected to an anti-slip pad (11) for engaging with the end face of the fixed seat (10).

6. The oilfield water injection pump repair tool according to claim 1, characterized in that: The handle (1) has several mounting slots (19) at the bottom edge of the outer wall. A gear (14) is rotatably connected in the mounting slot (19). A locking block (15) is fixedly connected to the side of the gear (14) and slides with the wall of the mounting slot (19) and is used to fix the position of the handle (1).

7. The oilfield water injection pump repair tool according to claim 6, characterized in that: One end of the handle (1) is provided with a central rack (6) that meshes with the gear (14).

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