Pump plunger dismounting tool for fracturing pump

Abstract

The utility model discloses a pump plunger dismounting tool for a fracturing pump, which comprises a first disc and a plurality of cylinders, the center of the first disc is provided with a through hole, a plurality of first strip-shaped holes are circumferentially distributed around the through hole, the through hole is sleeved with a push rod in a sliding manner, the cylinders comprise sleeves and loop bars, and the sleeves are sleeved with the first strip-shaped holes. The sleeves are in one-to-one correspondence with the first strip-shaped holes, one ends of the sleeves are connected with the first disc, the sleeve rods penetrate through the first strip-shaped holes and are connected with the push rods, and flange connecting blocks are mounted at the other ends of the sleeves, so that the sleeves can be fixedly connected with a fracturing pump flange to complete positioning of the plunger; and the sleeve rod penetrates through the strip-shaped hole and is connected with the push rod, so that the push rod can be driven to push the plunger to complete the installation of the plunger when the air cylinder is started, therefore, the positioning and the installation of the plunger can be completed only by utilizing the air cylinder, the plunger does not need to be manually pushed, and the labor intensity is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of fracturing pumps, and particularly relates to a tool for disassembling and assembling pump plungers of a fracturing pump. Background Art

[0002] A fracturing pump is an important device for oilfield fracturing operations. During daily maintenance, it is necessary to disassemble and install the plunger. For example, the utility model patent with the authorization announcement number CN215660022U and the name of a tool for installing a pump plunger of a fracturing pump includes a support frame and a push rod assembly. The support frame includes a fixed disk and three positioning components. Three strip-shaped holes are equally spaced in the circumferential direction of the fixed disk, and the axial extension lines of the three strip-shaped holes intersect at the center of the fixed disk. The positioning components are slidably arranged in the corresponding strip-shaped holes. The positioning components extend along the pushing direction of the push rod assembly and form a flange fixing end, and the flange fixing end is detachably connected to the fracturing pump flange. By adjusting the position of the positioning components, the flange fixing end is connected to the fracturing pump flanges of different calibers, solving the problem that the support frame of the existing installation tool cannot be fixedly connected to the fracturing pump flanges of different calibers.

[0003] However, when multiple plungers need to be installed, the staff continuously manually operates the push rod assembly, resulting in a relatively large labor intensity. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the above technical deficiencies and provide a tool for disassembling and assembling pump plungers of a fracturing pump, solving the technical problem that when multiple plungers are installed in the prior art, the staff continuously manually operates the push rod assembly, resulting in a relatively large labor intensity.

[0005] To achieve the above technical purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides a tool for disassembling and assembling pump plungers of a fracturing pump, including:

[0007] A first disk, a through hole is provided at the center of the first disk, and a plurality of first strip-shaped holes are circumferentially distributed around the through hole. A push rod is slidably sleeved in the through hole;

[0008] A plurality of cylinders, each cylinder includes a sleeve and a rod. One end of the sleeve is connected to the first disk, the rod passes through the first strip-shaped hole and is connected to the push rod. A flange connection block is installed at the other end of the sleeve, and the sleeve corresponds to the first strip-shaped hole one by one.

[0009] In some embodiments, the length direction of each of the first strip holes intersects at the through hole, a first thread is opened on the outer wall of one end of the sleeve, the outer wall of the first thread is threadedly connected with a first nut, the outer wall of the sleeve is fixedly connected with a first convex ring, a first ring groove is formed between the first nut and the first convex ring, and the first ring groove is slidably sleeved in the first strip hole.

[0010] In some embodiments, a first washer is disposed between the first nut and the first disk, and the first washer is slidably mounted on an outer wall of the first thread.

[0011] In some embodiments, a second disc is further included, which is located on the side of the first disc away from the sleeve, one end of the push rod is fixedly connected to the center of the second disc, and the second disc has a plurality of second strip holes distributed circumferentially, and one end of the sleeve rod away from the sleeve is slidably sleeved in the second strip holes.

[0012] In some embodiments, a second thread is provided at one end of the sleeve away from the sleeve, the outer wall of the second thread is threadedly connected to a second nut, the outer wall of the sleeve is fixedly connected to a second convex ring, a second ring groove is formed between the second nut and the second convex ring, and the second ring groove is slidably mounted in the second strip hole.

[0013] In some embodiments, a second washer is provided between the second nut and the second disc, and the second washer is slidably mounted on an outer wall of the second thread.

[0014] In some embodiments, a first sliding hole is opened at the end of the push rod away from the second disc, a sliding rod is slidably sleeved in the first sliding hole, a first limiting plate is fixedly connected to the end of the sliding rod away from the first sliding hole, a spring is provided between the first limiting plate and the end of the push rod, and the spring is slidably sleeved outside the sliding rod.

[0015] In some embodiments, a buffer pad is fixedly connected to a side of the first limiting plate facing away from the sliding rod.

[0016] In some embodiments, a second sliding hole is opened in the first sliding hole, the first sliding hole and the second sliding hole are coaxially arranged, and the aperture of the second sliding hole is larger than the aperture of the first sliding hole, and a second limiting plate is fixedly connected to one end of the sliding rod close to the first sliding hole, and the second limiting plate is slidably sleeved in the second sliding hole.

[0017] In some embodiments, the flange connection block is provided with a flange connection hole, and the flange connection hole is connected to the fracturing pump flange through bolts.

[0018] Compared with the prior art, a pump plunger disassembly and assembly tool for a fracturing pump provided by the present utility model has a flange connection block installed at the end of a sleeve, enabling the sleeve to be fixedly connected to the fracturing pump flange to complete the positioning of the plunger. Then, a sleeve rod passes through a strip-shaped hole and is connected to a push rod, so that when the air cylinder is started, the push rod can be driven to push the plunger to complete the installation of the plunger. Thus, the present utility model only uses an air cylinder to complete the positioning and installation of the plunger, without manually pushing the plunger, effectively reducing the labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 FIG. 6 is a three-dimensional view of a pump plunger disassembly and assembly tool for a fracturing pump provided by an embodiment of the present utility model;

[0020] Figure 2 FIG. Figure 1 is a schematic structural view of the air cylinder in FIG. 6;

[0021] Figure 3 FIG. Figure 1 is a schematic structural view of the first disc in FIG. 6;

[0022] Figure 4 FIG. Figure 1 is a schematic view of the connection relationship between the second disc and the push rod in FIG. 6;

[0023] Figure 5 FIG. Figure 1 is a schematic structural view of the slide bar in FIG. 6.

[0024] DESCRIPTION OF THE REFERENCE NUMERALS: 1, first disc; 11, through hole; 12, first strip-shaped hole; 2, air cylinder; 21, sleeve; 211, flange connection block; 2111, flange connection hole; 212, first thread; 213, first nut; 214, first convex ring; 215, first ring groove; 216, first washer; 22, sleeve rod; 221, second thread; 222, second nut; 223, second convex ring; 224, second ring groove; 225, second washer; 3, push rod; 31, first sliding hole; 32, slide bar; 321, first limiting plate; 322, buffer pad; 323, second limiting plate; 33, spring; 34, second sliding hole; 4, second disc; 41, second strip-shaped hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0026] In order to solve the technical problem of high labor intensity caused by continuously manually operating the push rod assembly when installing multiple plungers, the utility model provides a pump plunger disassembly and assembly tool for a fracturing pump, which can reduce the labor intensity.

[0027] It should be noted that the pump plunger disassembly and assembly tool for a fracturing pump described in the utility model is used for but not limited to fracturing pumps, etc. For the convenience of description, in the utility model, only a pump plunger disassembly and assembly tool for a fracturing pump applied to a fracturing pump is taken as an example for description, and the principle of a pump plunger disassembly and assembly tool for a fracturing pump applied to other types of equipment is substantially the same as that applied to a fracturing pump, and will not be elaborated one by one here.

[0028] Please refer to Figure 1 - Figure 5 where Figure 1 is a schematic structural diagram of a pump plunger disassembly and assembly tool for a fracturing pump in an embodiment of the utility model. A pump plunger disassembly and assembly tool for a fracturing pump includes a first disc 1 and a cylinder 2. A through hole 11 is provided in the center of the first disc 1, and a plurality of first strip holes 12 are circumferentially distributed around the through hole 11. A push rod 3 is slidably sleeved in the through hole 11. There are a plurality of cylinders 2, and the cylinder 2 includes a sleeve 21 and a rod 22. One end of the sleeve 21 is connected to the first disc 1, the rod 22 passes through the first strip hole 12 and is connected to the push rod 3, and a flange connection block 211 is installed at the other end of the sleeve 21, and the sleeve 21 corresponds to the first strip hole 12 one by one.

[0029] In this embodiment, by installing a flange connection block 211 at the end of the sleeve 21, the sleeve 21 can be fixedly connected to the fracturing pump flange to complete the positioning of the plunger; then, by passing the rod 22 through the strip hole and connecting it to the push rod 3, when the cylinder 2 is started, the push rod 3 can be driven to push the plunger to complete the installation of the plunger. Thus, the utility model only uses the cylinder 2 to complete the positioning and installation of the plunger, without manually pushing the plunger, effectively reducing the labor intensity.

[0030] First, fixedly connect with the flange of the fracturing pump through the flange connection block 211; then, insert one end of the plunger into the installation position, and the other end of the plunger abuts against the end of the push rod 3; finally, start each cylinder 2 synchronously to drive the push rod 3 to push the plunger until the installation of the plunger is completed.

[0031] Furthermore, in order to ensure the synchronous operation of each cylinder 2, each cylinder 2 is controlled to open and close together through a PLC computer terminal.

[0032] In one of the embodiments, please refer to Figure 1 and Figure 2, the length directions of the first strip-shaped holes 12 intersect with the through hole 11. One end of the outer wall of the sleeve 21 is provided with a first thread 212, and a first nut 213 is threadedly connected to the outer wall of the first thread 212. A first convex ring 214 is fixedly connected to the outer wall of the sleeve 21. A first annular groove 215 is formed between the first nut 213 and the first convex ring 214, and the first annular groove 215 is slidably sleeved in the first strip-shaped hole 12.

[0033] In this embodiment, through the arrangement of the first nut 213 and the first convex ring 214, the sleeve 21 can be reciprocally moved along the length direction of the first strip-shaped hole 12 and then fixed, effectively avoiding the shaking of the sleeve 21 during the process of the push rod 3 extruding the fracturing pump plunger, which affects the installation of the plunger. The staff can adjust the distance between the sleeves 21, so that the flange connection block 211 can be fixedly connected to the flanges of different sizes of fracturing pump plungers, thereby making the device applicable to fracturing pump flanges of different calibers.

[0034] In one of the embodiments, please refer to Figure 1 and Figure 2 , a first washer 216 is provided between the first nut 213 and the first disc 1, and the first washer 216 is slidably sleeved on the outer wall of the first thread 212.

[0035] In this embodiment, the function of the first washer 216 is to prevent the first nut 213 from loosening, improve the clamping force between the first nut 213 and the first convex ring 214, and further ensure that the sleeve 21 does not shake during the installation of the fracturing pump plunger.

[0036] In one of the embodiments, please refer to Figure 1 and Figure 4 , further including a second disc 4. The second disc 4 is located on the side of the first disc 1 away from the sleeve 21. One end of the push rod 3 is fixedly connected to the center of the second disc 4. A plurality of second strip-shaped holes 41 are circumferentially distributed on the second disc 4, and the end of the sleeve rod 22 away from the sleeve 21 is slidably sleeved in the second strip-shaped holes 41.

[0037] In this embodiment, through the arrangement of the second strip-shaped holes 41, the sleeve rod 22 can reciprocally move along the length direction of the second strip-shaped holes 41, so that when the staff adjusts the distance between the sleeves 21, the sleeve rod 22 can be driven to move together, and at the same time, it does not affect the connection between the sleeve rod 22 and the second disc 4. No matter which caliber of fracturing pump flange it is applicable to, the push rod 3 can always normally push the fracturing pump plunger.

[0038] In one of the embodiments, please refer to Figure 1 and Figure 2, one end of the sleeve rod 22 away from the sleeve 21 is provided with a second thread 221, and the outer wall of the second thread 221 is threadedly connected with a second nut 222. A second convex ring 223 is fixedly connected to the outer wall of the sleeve rod 22. A second ring groove 224 is formed between the second nut 222 and the second convex ring 223, and the second ring groove 224 is slidably sleeved in the second strip-shaped hole 41.

[0039] In this embodiment, through the arrangement of the second nut 222 and the second convex ring 223, the sleeve rod 22 and the second strip-shaped hole 41 can be fixed, effectively avoiding the shaking of the sleeve rod 22 during the process of the push rod 3 squeezing the fracturing pump plunger and affecting the installation of the plunger.

[0040] In one embodiment, please refer to Figure 1 and Figure 2 , a second washer 225 is provided between the second nut 222 and the second disc 4, and the second washer 225 is slidably sleeved on the outer wall of the second thread 221.

[0041] In this embodiment, the function of the second washer 225 is to prevent the second nut 222 from loosening, improve the clamping force between the second nut 222 and the second convex ring 223, and further ensure that the sleeve rod 22 does not shake during the installation of the fracturing pump plunger.

[0042] In one embodiment, please refer to Figure 1 、 Figure 4 and Figure 5 , one end of the push rod 3 away from the second disc 4 is provided with a first sliding hole 31, a sliding rod 32 is slidably sleeved in the first sliding hole 31, one end of the sliding rod 32 away from the first sliding hole 31 is fixedly connected with a first limiting plate 321, and a spring 33 is provided between the first limiting plate 321 and the end of the push rod 3. The spring 33 is slidably sleeved outside the sliding rod 32.

[0043] In this embodiment, when the push rod 3 squeezes the fracturing pump plunger, the sliding rod 32 will move towards the first sliding hole 31 and compress the spring 33. This process can effectively alleviate the damage caused by the direct hard contact between the push rod 3 and the fracturing pump plunger.

[0044] In one embodiment, please refer to Figure 5 , a buffer pad 322 is fixedly connected to the side of the first limiting plate 321 facing away from the sliding rod 32.

[0045] In this embodiment, the buffer pad 322 is fixed on the first limiting plate 321 by bonding. The buffer pad 322 is made of elastic rubber material, further avoiding the extrusion damage caused by the push rod 3 to the fracturing pump plunger.

[0046] In one embodiment, please refer to Figure 1 、 Figure 4 and Figure 5A second sliding hole 34 is opened in the first sliding hole 31, the first sliding hole 31 and the second sliding hole 34 are coaxially arranged, and the aperture of the second sliding hole 34 is larger than the aperture of the first sliding hole 31, and the end of the sliding rod 32 close to the first sliding hole 31 is fixedly connected to the second limiting plate 323, and the second limiting plate 323 is slidably sleeved in the second sliding hole 34.

[0047] In this embodiment, the aperture of the second sliding hole 34 is larger than that of the first sliding hole 31, so that the second limiting plate 323 cannot be separated from the second sliding hole 34. Under the restriction of the first sliding hole 31, the sliding rod 32 is effectively prevented from falling off, so that the sliding rod 32 is always located at the preset position.

[0048] In one embodiment, see Figure 2 The flange connection block 211 is provided with a flange connection hole 2111, and the flange connection hole 2111 is connected to the fracturing pump flange through bolts.

[0049] In this embodiment, the flange connection hole 2111 is used to penetrate the flange connection hole 2111 and fixedly connect with the flange of the fracturing pump by bolts, so as to facilitate the positioning of the device and avoid uneven force on the plunger during installation.

[0050] In order to better understand the present invention, the following Figures 1 to 5 The technical solution of the utility model is described in detail:

[0051] First, according to the size of the fracturing pump flange, adjust the position of each sleeve 21 in the first strip hole 12 and tighten the first washer 216 and the first convex ring 214 to clamp the first disc 1 by twisting the first nut 213, so that each sleeve 21 can be fixed. At the same time, the position of the sleeve rod 22 in the second strip hole 41 will move along with the sleeve 21, and tighten the second washer 225 and the second convex ring 223 to clamp the second disc 4 by twisting the second nut 222, so that each sleeve rod 22 can be fixed. Then, the bolts are passed through the flange connection The connecting hole 2111 is connected to the flange of the fracturing pump, so that the flange connecting block 211 is fixedly connected to the flange of the fracturing pump; then, one end of the fracturing pump plunger is inserted into the installation position, and the other end of the plunger abuts the buffer pad 322; finally, each cylinder 2 is started synchronously, the first disc 1 does not move, the second disc 4 moves toward the first disc 1 and drives the push rod 3 to push the fracturing pump plunger until the installation of the fracturing pump plunger is completed. The utility model only uses the cylinder 2 to complete the positioning and installation of the plunger, and there is no need to manually push the plunger, which effectively reduces the labor intensity.

[0052] The above specific implementation methods of the utility model do not constitute a limitation on the protection scope of the utility model. Any other corresponding changes and modifications made according to the technical concept of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A pump plunger disassembly and assembly tool for a fracturing pump, characterized in that: include: A first disc, wherein a through hole is provided in the center of the first disc, a plurality of first strip-shaped holes are distributed circumferentially around the through hole, and a push rod is provided on the sliding sleeve of the through hole; Cylinder, there are several cylinders, the cylinder includes a sleeve and a sleeve rod, one end of the sleeve is connected to the first disc, the sleeve rod passes through the first strip hole and is connected to the push rod, the other end of the sleeve is installed with a flange connecting block, and the sleeve corresponds to the first strip hole one by one.

2. A pump plunger disassembly and assembly tool for a fracturing pump according to claim 1, characterized in that: The length direction of each of the first strip holes intersects with the through hole, a first thread is provided on the outer wall of one end of the sleeve, a first nut is threadedly connected to the outer wall of the first thread, a first convex ring is fixedly connected to the outer wall of the sleeve, a first ring groove is formed between the first nut and the first convex ring, and the first ring groove is slidably sleeved in the first strip hole.

3. A pump plunger disassembly and assembly tool for a fracturing pump according to claim 2, characterized in that: A first washer is provided between the first nut and the first disc, and the first washer is slidably sleeved on the outer wall of the first thread.

4. A pump plunger disassembly and assembly tool for a fracturing pump according to claim 1, characterized in that: It also includes a second disc, which is located on the side of the first disc away from the sleeve, one end of the push rod is fixedly connected to the center of the second disc, and the second disc has a plurality of second strip holes distributed circumferentially, and one end of the sleeve rod away from the sleeve is slidably sleeved in the second strip hole.

5. A pump plunger disassembly and assembly tool for a fracturing pump according to claim 4, characterized in that: A second thread is formed at one end of the sleeve rod away from the sleeve, and a second nut is threadedly connected to the outer wall of the second thread. A second convex ring is fixedly connected to the outer wall of the sleeve rod, and a second annular groove is formed between the second nut and the second convex ring. The second annular groove is slidably mounted in the second strip hole.

6. A pump plunger disassembly and assembly tool for a fracturing pump according to claim 5, characterized in that: A second washer is provided between the second nut and the second disc, and the second washer is slidably sleeved on the outer wall of the second thread.

7. A pump plunger disassembly and assembly tool for a fracturing pump according to claim 4, characterized in that: A first sliding hole is opened at one end of the push rod away from the second disc, a sliding rod is slidably sleeved in the first sliding hole, a first limiting plate is fixedly connected to one end of the sliding rod away from the first sliding hole, a spring is arranged between the first limiting plate and the end of the push rod, and the spring is slidably sleeved outside the sliding rod.

8. A pump plunger disassembly and assembly tool for a fracturing pump according to claim 7, characterized in that: A buffer pad is fixedly connected to a side of the first limiting plate away from the sliding rod.

9. A pump plunger disassembly and assembly tool for a fracturing pump according to claim 7, characterized in that: A second sliding hole is provided in the first sliding hole, the first sliding hole and the second sliding hole are coaxially arranged, and the aperture of the second sliding hole is larger than the aperture of the first sliding hole, and a second limiting plate is fixedly connected to one end of the sliding rod close to the first sliding hole, and the second limiting plate is slidably sleeved in the second sliding hole.

10. A pump plunger disassembly and assembly tool for a fracturing pump according to claim 1, characterized in that: The flange connection block is provided with a flange connection hole, and the flange connection hole is connected to the fracturing pump flange through bolts.

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