Reciprocating plunger pump filler replacement tool

Abstract

The utility model relates to the field of sealing filler replacement, in particular to a reciprocating type plunger pump filler replacement tool which comprises a supporting piece, a piston rod, a piston rod and a piston rod. The limiting nut is in limiting connection with the supporting piece, the operating rod is provided with a threaded section matched with the limiting nut, and the operating rod is in threaded connection with the limiting nut; a matching part is arranged at one end of the operating rod, the other end of the operating rod is connected with a pressing plate, the matching part can be connected with an electric rotating tool in a matched mode, and the pressing plate is used for abutting against filler. According to the reciprocating type plunger pump filler replacing tool, the electric rotating tool drives the operating rod to rotate, so that the operating rod and the limiting nut move relatively, the pressing plate connected to the operating rod is driven to move to abut against filler, and the filler is disassembled; and the pressing plate is driven to move reversely to lift the filler in place, so that the filler is reloaded, and the disassembly and reloading efficiency of the filler is high.

Description

Technical Field

[0001] The utility model relates to the field of seal packing replacement, in particular to a reciprocating plunger pump packing replacement tool. Background Art

[0002] The sulfur-containing sewage generated in gas field development is usually reinjected by a reciprocating plunger pump. The daily maintenance of the reciprocating plunger pump mainly includes the replacement of the seal packing and the maintenance of the inlet and outlet valve plates. To ensure that a certain negative pressure can be formed in the plunger cavity during liquid suction, the seal packing generally adopts an interference fit and is tightly filled between the plunger and the cavity. After long-term operation, the seal packing is prone to deformation due to temperature influence and adheres to the plunger cavity. The disassembly and reinstallation of the existing reciprocating plunger pump seal packing are both manually operated. During disassembly, it is taken out by manually knocking it several times or by using a hook mechanism to hook it. However, manual knocking cannot ensure that each knock is in place, increasing the disassembly time, resulting in low disassembly efficiency, and easily damaging the seal and causing poor sealing, affecting the sealing service life. Using a hook mechanism to hook it cannot ensure the overall removal of the seal packing and requires multiple hooking, affecting the maintenance efficiency. Summary of the Utility Model

[0003] The purpose of the utility model is to overcome the deficiencies in the prior art that the disassembly and reinstallation of the reciprocating plunger pump seal packing are both manually operated, affecting the sealing service life and maintenance efficiency, and provide a reciprocating plunger pump packing replacement tool.

[0004] The utility model provides a reciprocating plunger pump packing replacement tool, including:

[0005] A support member that can be detachably connected to the end cover of the reciprocating plunger pump;

[0006] A limit nut that is limit-connected to the support member;

[0007] An operating rod is provided with a threaded section adapted to the limit nut, and the operating rod is threadedly connected to the limit nut; one end of the operating rod is provided with a mating portion, and the other end is connected to a pressing plate. The mating portion can be adapted and connected to an electric rotary tool, and the pressing plate is used to abut against the packing.

[0008] For the reciprocating plunger pump packing replacement tool of the utility model, the operating rod is driven to rotate by an electric rotary tool, so that the operating rod and the limit nut move relatively, driving the pressing plate connected to the operating rod to move and push against the packing, realizing the disassembly of the packing. When the packing needs to be reinstalled, the operating rod is driven to rotate in the reverse direction, driving the pressing plate to move in the reverse direction to lift the packing in place, realizing the reinstallation of the packing, and making the disassembly and reinstallation efficiency of the packing relatively high.

[0009] Preferably, the support member includes a strip-shaped structural member, and a limiting hole is provided on the support member. The support member abuts against the outer shape of the plunger pump to provide a reaction force for driving the operating rod to move.

[0010] Preferably, a plurality of the limiting holes are arranged, or the limiting hole is a strip-shaped hole, and the long axis direction of the strip-shaped limiting hole is consistent with the length direction of the support member. The support member can be adapted to the outer shapes of different models of plunger pumps, facilitating the fixing of the support member.

[0011] Preferably, an anti-slip member is provided at the bottom of the support member. To prevent the support member from slipping during the rotation of the operating rod and ensure the stable use of the tool.

[0012] Preferably, the limiting nut includes a limiting end portion and a limiting cylinder portion. A connecting hole is provided on the support member, and the limiting cylinder portion can be in limiting connection with the connecting hole, and the limiting end portion can abut against the support member. To make the relative position of the limiting nut and the support member stable and assist the operating rod to rotate stably.

[0013] Preferably, the limiting cylinder portion is provided with limiting ribs, and the connecting hole is provided with limiting grooves, and the limiting ribs and the limiting grooves can be nested and matched. To prevent relative rotation between the limiting nut and the support member during the rotation of the operating rod and provide a reaction force for driving the rotation of the operating rod.

[0014] Preferably, the operating rod is provided with a limiting post, and the pressing plate is sleeved on the limiting post. To enable the replacement of the pressing plate according to the actual situation and realize the replacement of different sizes of packing.

[0015] Preferably, a locking nut is provided on the limiting post. The locking nut is used to limit the relative position of the pressing plate and the operating rod, so that the position of the pressing plate is stable during the process of lifting the packing, and the smooth reinstallation of the packing is realized.

[0016] Preferably, the pressing plate includes at least two pressing blocks, and adjacent pressing blocks are nested, and all the pressing blocks can be sleeved on the limiting post. To enable a single packing replacement tool to be adapted to the disassembly and reinstallation of different sizes of packing and facilitate the storage of different specifications of pressing blocks.

[0017] Preferably, each pressing block is respectively provided with a size mark for marking the outer diameter of the pressing block; a local cutting plane is provided on the operating rod, and a scale is provided on the local cutting plane. To realize the rapid matching of the pressing block and the packing size, improve the efficiency, and determine the disassembly and installation positions of the seasoning through the scale on the operating rod, so that the packing can be quickly installed in place during the reinstallation process and the installation accuracy is improved.

[0018] Preferably, the electric rotary tool includes an electric wrench, and the fitting part is adapted to the electric wrench. The operating rod is driven to rotate by the electric wrench, and then the pressing plate is driven to extrude and disassemble or lift and reinstall the packing.

[0019] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0020] 1. The present utility model provides a reciprocating plunger pump packing replacement tool. By driving the operating rod to rotate with an electric rotary tool, the operating rod moves relative to the limit nut, driving the pressing plate connected to the operating rod to move and push against the packing, enabling the disassembly of the packing.

[0021] 2. The present utility model provides a reciprocating plunger pump packing replacement tool. By driving the operating rod to rotate in the reverse direction, the pressing plate is driven to move in the reverse direction to lift the packing into place, enabling the reinstallation of the packing and making the disassembly and reinstallation efficiency of the packing relatively high. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic structural diagram of a reciprocating plunger pump packing replacement tool according to Embodiment 1;

[0023] Figure 2 It is a top view of a reciprocating plunger pump packing replacement tool according to Embodiment 1;

[0024] Figure 3 It is a schematic structural diagram of the limit nut in Embodiment 1;

[0025] Figure 4 It is a schematic structural diagram of the support member in Embodiment 1;

[0026] Figure 5 It is a schematic structural diagram of a reciprocating plunger pump packing replacement tool according to Embodiment 2;

[0027] Figure 6 For Figure 5 the schematic structural diagram of the operating rod at the A - A section position;

[0028] Figure 7 It is a schematic structural diagram of a reciprocating plunger pump packing replacement tool in the packing disassembly state;

[0029] Figure 8 It is a schematic structural diagram of a reciprocating plunger pump packing replacement tool in the packing reinstallation state;

[0030] Markings in the figure:

[0031] 1 - Support member, 11 - Limit hole, 12 - Connection hole, 13 - Limit groove, 2 - Limit nut, 21 - Limit end, 22 - Limit cylinder part, 23 - Limit rib, 3 - Operating rod, 31 - Threaded section, 32 - Fitting part, 33 - Limit post, 34 - Local cutting plane, 4 - Pressure plate, 41 - Pressing block, 5 - Anti-slip part, 6 - Locking nut, 7 - Filler. Detailed implementation manners

[0032] The following further describes the present utility model in detail with reference to specific embodiments. However, this should not be construed as limiting the scope of the above-mentioned subject matter of the present utility model to the following embodiments. Any technology implemented based on the content of the present utility model belongs to the scope of the present utility model.

[0033] In the description of the specific embodiments of the present utility model, without special instructions, the expression terms of orientation or positional relationship such as "upper", "lower", "left", "right", "center", "inner", "outer", etc. are all based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product / device / equipment of this utility model is commonly used and placed. These terms of orientation or positional relationship are only for the convenience of describing the solution of the present utility model or simplifying the description in specific embodiments, facilitating technicians to quickly understand the solution, rather than indicating or implying that a specific device / component / element must have a specific orientation or be constructed and operated in a specific positional relationship. Therefore, it should not be construed as a limitation to the present utility model.

[0034] In addition, if terms such as "horizontal", "vertical", "suspended", "parallel", etc. appear, it does not mean that the corresponding device / component / element is required to be absolutely horizontal or vertical or suspended or parallel, but can be slightly inclined or have a deviation. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined. Or, it can be simply understood that the corresponding device / component / element is arranged in the directions of "horizontal", "vertical", "suspended", "parallel", etc., and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still perform its function in the solution of the present utility model.

[0035] In addition, the expressions such as "first", "second", "third", etc. in the terms are only used to distinguish the description of the same or similar components, and should not be construed as emphasizing or implying the relative importance of specific components.

[0036] In addition, in the description of the embodiments of the present utility model, "several", "multiple", and "a number of" represent at least two. It can be any situation such as 2, 3, 4, 5, 6, 7, 8, 9, etc., and even more than 9.

[0037] In addition, in the description of the technical solution of the present utility model, unless otherwise clearly specified / defined / restricted, where the terms "set", "installed", "connected", "connected", "provided with", "laid", "arranged" appear, they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be connection means commonly used in the art such as welding, riveting, bolting, and threaded connection. Such a connection can be a mechanical connection, an electrical connection, or a communication connection; it can be directly connected or indirectly connected through an intermediate medium, and can be the communication inside two components.

[0038] Embodiment 1

[0039] As Figures 1-2 shown, a reciprocating plunger pump packing replacement tool includes: a support member 1, a limit nut 2, and an operating rod 3. The support member 1 can be detachably connected to the end cover of the reciprocating plunger pump; the limit nut 2 can be limit-connected to the support member 1; the operating rod 3 is provided with a threaded section 31 adapted to the limit nut 2, and the operating rod 3 passes through the limit nut 2 and is threadedly connected to the limit nut 2; one end of the operating rod 3 is provided with a mating portion 32, and the other end is connected to a pressing plate 4. The mating portion 32 can be adaptively connected to an electric rotary tool, and the pressing plate 4 is used to abut against and / or lift the packing 7.

[0040] In one or several embodiments, as Figure 4 shown, the support member 1 is a long strip-shaped structural member, and a connection hole 12 for the limit nut 2 to extend into is provided in the center. On both sides of the connection hole 12 on the support member 1, limit holes 11 adapted to the threaded connection holes 12 on the end cover of the plunger pump are provided. During use, the support member 1 is threadedly connected to the plunger pump, the limit nut 2 extends into the connection hole 12, the operating rod 3 passes through the limit nut 2 and is threadedly connected to the limit nut 2, the pressing plate 4 is connected to the bottom end of the operating rod 3, and by driving the mating portion 32 at the top end of the operating rod 3 to rotate with an electric rotary tool, the operating rod 3 can be driven to rotate and move relative to the limit nut 2, and then drive the pressing plate 4 to move, so that the pressing plate 4 pushes or lifts the packing 7, realizing the disassembly and reinstallation of the packing 7.

[0041] In an optional embodiment, as Figure 1 shown, a plurality of limit holes 11 are arranged on the support member 1, so that the support member 1 can be connected to plunger pumps of different models by cooperating with the limit holes 11 at different positions through connecting members such as bolts.

[0042] In an optional embodiment, as Figure 4As shown, the limiting hole 11 on the support member 1 is a strip-shaped hole, enabling the movement of the connecting member such as a bolt within the strip-shaped hole to achieve the connection between the support member 1 and plunger pumps of different models.

[0043] In one or several embodiments, as Figure 5 shown, an anti-slip member 5 is provided at the bottom of the support member 1.

[0044] In an alternative embodiment, the anti-slip member 5 can be a structural member such as a rubber pad, a metal plate with cut grooves, or a magnetic adsorption block provided at the bottom of the support member 1, so as to increase the friction between the support member 1 and the plunger pump through the anti-slip member 5. When it is inconvenient to fix the support member 1 and the plunger pump, the risk of the support member 1 slipping is reduced through the anti-slip member 5, realizing the stable rotation of the operating rod 3, and further realizing the smooth disassembly or reinstallation of the packing 7.

[0045] In one or several embodiments, as Figure 3 shown, the limiting nut 2 includes a limiting end portion 21 and a limiting cylinder portion 22. The limiting cylinder portion 22 can be in limiting connection with the connection hole 12, and the limiting end portion 21 can abut against the support member 1.

[0046] In an alternative embodiment, the limiting nut 2 is a circular sleeve structural member composed of a limiting end portion 21 and a limiting cylinder portion 22. The outer diameter of the limiting end portion 21 is larger than the outer diameter of the limiting cylinder portion 22 and larger than the diameter of the connection hole 12 on the support member 1. During use, the limiting cylinder portion 22 can extend into the connection hole 12 on the support member 1, and the limiting end portion 21 can abut against the top surface of the support member 1 after the limiting cylinder portion 22 completely extends into the connection hole 12.

[0047] In an alternative embodiment, as Figure 3 shown, the limiting cylinder portion 22 is provided with limiting ribs 23. The limiting ribs 23 are arranged along the axial direction of the limiting cylinder portion 22. A limiting groove 13 is provided in the connection hole 12. The limiting ribs 23 and the limiting groove 13 can be nested and matched to realize the fixation of the relative position between the limiting nut 2 and the support member 1, so that the limiting nut 2 will not rotate relative to the support member 1 when the operating rod 3 rotates.

[0048] By indirectly providing the connection between the support member 1 and the operating rod 3 through the limiting nut 2, when the thread between the operating rod 3 and the limiting nut 2 is worn after long-term use, the limiting nut 2 can be replaced separately instead of replacing the support member 1 as a whole, extending the service life of the packing 7 replacement tool.

[0049] In one or several embodiments, a matching portion 32 is provided at the top end of the operating rod 3. The matching portion 32 is a columnar structural member. The cross-section of the matching portion 32 is a regular hexagon or a rectangle, and it can be connected in cooperation with electric rotating tools such as a torque wrench and an electric wrench.

[0050] In one or several embodiments, a limiting post 33 is provided at one end of the operating rod 3 away from the mating part 32. The limiting post 33 is a circular plate-shaped structural member with a hole at the center. The pressing plate 4 is sleeved on the limiting post 33, and the pressing plate 4 can be replaced according to the actual situation so that the pressing plate 4 is adapted to packings 7 of different sizes.

[0051] In an alternative embodiment, a locking nut 6 is provided on the limiting post 33 to limit the relative positions of the pressing plate 4 and the operating rod 3, so that during the process of lifting the packing 7 by the operating rod 3, the position of the pressing plate 4 is stable, and the smooth reinstallation of the packing 7 is realized.

[0052] In an alternative embodiment, the outer diameter of the limiting post 33 is smaller than the outer diameter of the operating rod 3, so that during the extrusion process of the packing 7, the locking nut 6 can be not provided according to the actual situation, and the pressing plate 4 abuts against the step formed by the limiting post 33 and the operating rod 3, and the position of the pressing plate 4 during the extrusion process of the packing 7 can also be limited.

[0053] For a reciprocating plunger pump packing replacement tool of this embodiment, when in use, as Figure 7 shown, when the packing 7 is disassembled, by an electric rotary tool, such as a torque wrench, an electric wrench and other tools that can switch between forward and reverse rotations, the operating rod 3 is driven to rotate, so that the operating rod 3 and the limiting nut 2 move relatively, and the pressing plate 4 connected to the operating rod 3 is driven to move to push against the packing 7, realizing the disassembly of the packing 7. As Figure 8 shown, when the packing 7 needs to be reinstalled, the operating rod 3 is driven to rotate in the reverse direction, driving the pressing plate 4 to move in the reverse direction to lift the packing 7 in place, realizing the reinstallation of the packing 7, so that the disassembly and reinstallation efficiency of the packing 7 is relatively high.

[0054] Embodiment 2

[0055] As Figure 4 、 Figure 5 shown, a reciprocating plunger pump packing replacement tool of this embodiment has a structure similar to that of Embodiment 1, the difference being that: the pressing plate 4 includes at least two pressing blocks 41, and adjacent pressing blocks 41 are nested, and all the pressing blocks 41 can be sleeved on the limiting post 33.

[0056] For a reciprocating plunger pump packing replacement tool of this embodiment, a plurality of pressing blocks 41 are used to form the pressing plate 4. The pressing plate 4 is a circular plate structural member with a hole at the center, and a central groove is provided, so that adjacent pressing blocks 41 are nested through the central groove without affecting the overall shape of the pressing plate 4. During use, according to the size of the packing 7, the pressing blocks 41 are selected, so that the pressing plate 4 formed by the pressing blocks 41 can match the outer shape size of the packing 7, enabling a single packing replacement tool to be adapted to the disassembly and reinstallation of packings 7 of different sizes, and facilitating the storage of pressing blocks 41 of different specifications.

[0057] In an alternative embodiment, each briquette 41 is provided with a size identification for marking the outer diameter of the briquette 41, enabling quick matching of the sizes of the briquette 41 and the packing 7 and improving efficiency.

[0058] In an alternative embodiment, the size identification may be a number engraved on the side wall of the briquette 41, such that the setting of the size identification does not affect the contact plane between the pressing plate 4 and the packing 7, thereby improving the disassembly and assembly effect of the packing 7.

[0059] Embodiment 3

[0060] As Figure 6 shown, a reciprocating plunger pump packing replacement tool according to this embodiment has a structure similar to that of Embodiment 2, with the difference being that a partial cutting plane 34 is provided on the operating rod 3, and a scale is provided on the partial cutting plane 34.

[0061] In an alternative embodiment, the partial cutting plane 34 is provided on one or both sides of the longitudinal section of the operating rod 3. The width of the partial cutting plane 34 is set such that its setting does not affect the threaded connection between the operating rod 3 and the limit nut 2. A scale is longitudinally provided on the partial cutting plane 34. When disassembling the packing 7, the moving distance of the operating rod 3 relative to the support member 1 can be recorded. When reinstalling the packing 7, the packing 7 can be reinstalled in place according to the recorded moving distance, reducing the installation error caused by manual judgment of the installation position of the packing 7 and facilitating improving the disassembly and assembly efficiency of the packing 7.

[0062] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A reciprocating piston pump packing replacement tool, characterized in that: include: A support member (1) capable of being detachably connected to an end cover of a reciprocating piston pump; A limiting nut (2) is connected to the support member (1) in a limiting manner; An operating rod (3) is provided with a threaded section (31) adapted to the limiting nut (2), and the operating rod (3) is threadedly connected to the limiting nut (2); one end of the operating rod (3) is provided with a matching portion (32), and the other end is connected to a pressure plate (4), the matching portion (32) can be adapted to be connected to an electric rotating tool, and the pressure plate (4) is used to abut against a filler (7).

2. A reciprocating piston pump packing replacement tool according to claim 1, characterized in that: The support member (1) comprises a long strip-shaped structural member, and a limiting hole (11) is provided on the support member (1).

3. A reciprocating piston pump packing replacement tool according to claim 2, characterized in that: A plurality of the limiting holes (11) are arranged in an array, or the limiting holes (11) are strip-shaped holes, and the long axis direction of the limiting holes (11) of the strip-shaped holes is consistent with the length direction of the support member (1).

4. A reciprocating piston pump packing replacement tool according to claim 2, characterized in that: The bottom of the support member (1) is provided with an anti-slip member (5).

5. A reciprocating piston pump packing replacement tool according to claim 2, characterized in that: The limiting nut (2) comprises a limiting end portion (21) and a limiting barrel portion (22); the support member (1) is provided with a connecting hole (12); the limiting barrel portion (22) can be connected to the connecting hole (12) in a limiting manner; and the limiting end portion (21) can abut against the support member (1).

6. A reciprocating piston pump packing replacement tool according to claim 5, characterized in that: The limiting cylinder (22) is provided with a limiting rib (23), and the connection hole (12) is provided with a limiting groove (13), and the limiting rib (23) and the limiting groove (13) can be nested and matched.

7. A reciprocating piston pump packing replacement tool according to any one of claims 1 to 6, characterized in that: A limiting column (33) is provided at one end of the operating rod (3) away from the matching portion (32), the pressing plate (4) is sleeved on the limiting column (33), and a locking nut (6) is matched on the limiting column (33).

8. A reciprocating piston pump packing replacement tool according to claim 7, characterized in that: The pressing plate (4) comprises at least two pressing blocks (41), adjacent pressing blocks (41) are nested, and all the pressing blocks (41) can be sleeved on the limiting column (33).

9. A reciprocating piston pump packing replacement tool according to claim 8, characterized in that: Each of the pressing blocks (41) is provided with a size mark, and the size mark is used to mark the outer diameter of the pressing block (41); the operating rod (3) is provided with a local cutting plane (34), and the local cutting plane (34) is provided with a scale.

10. A reciprocating piston pump packing replacement tool according to claim 7, characterized in that: The electric rotating tool comprises an electric wrench, and the matching portion (32) is adapted to the electric wrench.

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