A device for disassembling a packing

Abstract

The utility model provides a kind of for packing dismounting device, the outer surface of sleeve is placed in plunger and the arc plate of the end portion of the side of cylinder near sealing material box can rotate around plunger, the radian of arc plate is same with the radian of the inner wall of sealing material box, and its end head portion inserts the notch of packing, to be connected with packing.The utility model can improve packing replacement efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of pump and motor maintenance technology, specifically, it relates to a disassembly and assembly device for packing. Background Technology

[0002] During secondary oilfield recovery, as the water content of the extracted crude oil increases, so does the amount of produced wastewater. Due to the high cost of water treatment, many oilfields directly reinject the produced wastewater using high-pressure plunger pumps. Although this wastewater undergoes some treatment, the injected water is still oily wastewater, generally alkaline, with high hardness, high mineralization, high mechanical impurities, and high sand content. Moreover, due to repeated reuse of the wastewater, its suspended solids and artificial additive content are relatively high, and it generally suffers from serious corrosion, scaling, and severe packing wear. Once the packing leaks, it will lead to plunger damage, and in severe cases, water will enter the crankcase, the lubricating oil will deteriorate, and ultimately, a pump jamming accident will occur. Therefore, the packing needs to be replaced regularly.

[0003] Existing solutions typically use self-made hooks to remove and install packing. Due to the small gap between the plunger and the sealing material box, the hook's movement and adjustment space are restricted by the sealing material box and plunger during the removal of packing by prying it outward (especially for packing closer to the inside). This wastes the operator's strength and is inconvenient to operate, resulting in low packing replacement efficiency. Utility Model Content

[0004] One objective of this invention is to provide a packing removal and installation device that, during the removal and installation process, applies an axial force to the packing inside the sealing material box by an arc-shaped plate, without being limited by the narrow space between the sealing material box and the plunger, thereby saving effort, facilitating operation, and improving packing replacement efficiency.

[0005] According to this utility model, a disassembly and assembly device for packing is provided. The packing is fitted onto the plunger of a plunger pump and press-fitted into a sealing material box. The disassembly and assembly device includes: a cylindrical body fitted onto the outer surface of the plunger and capable of rotating around the plunger, and an arc-shaped plate disposed at the end of the cylindrical body near the sealing material box. The arc of the arc-shaped plate is the same as the arc of the inner wall of the sealing material box, and its end head is inserted into the cut of the packing to connect with the packing.

[0006] In a preferred embodiment, a connecting plate is connected to the end of the cylinder near the sealing material box. The connecting plate is constructed in an arc shape, and its outer diameter is the same as that of the cylinder. The arc-shaped plate is fixedly disposed on the outer surface of the connecting plate.

[0007] In a preferred embodiment, the arc-shaped plate is fixedly disposed on the outer surface of the end of the connecting plate by welding.

[0008] In a preferred embodiment, the arc-shaped plate forms a 45° angle with the outer surface of the connecting plate.

[0009] In a preferred embodiment, the outer diameter of the arc-shaped plate is larger than the outer diameter of the cylinder.

[0010] In a preferred embodiment, the cylinder includes a first semi-cylindrical body and a second semi-cylindrical body, wherein the first semi-cylindrical body and the second semi-cylindrical body have the same structure and are connected as one piece by snap fasteners.

[0011] In a preferred embodiment, the connecting plate is connected to the end of the first or second semi-cylindrical body near the sealing material box.

[0012] In a preferred embodiment, the first semi-cylindrical body or the second semi-cylindrical body is integrally formed with the connecting plate.

[0013] In a preferred embodiment, the inner walls of both the first and second semi-cylindrical bodies are provided with protective pads.

[0014] In a preferred embodiment, handles are provided on the outer surfaces of both the first and second semi-cylindrical bodies.

[0015] This utility model has at least the following technical effects:

[0016] According to this utility model, a cylindrical body that is fitted onto the outer surface of a plunger and can rotate around the plunger, and an arc-shaped plate disposed at the end of the cylindrical body near the sealing material box, are provided. Since the curvature of the arc-shaped plate is the same as the curvature of the inner wall of the sealing material box, and its end head is inserted into the notch of the packing, the packing can be installed and removed by rotating the cylindrical body 1. During the installation and removal process, the arc-shaped plate applies an axial force to the packing inside the sealing material box, which is not limited by the narrow space between the sealing material box and the plunger, thus saving effort and facilitating operation, and improving the packing replacement efficiency. Attached Figure Description

[0017] Figure 1 A schematic diagram of the overall structure of a packing assembly / disassembly device according to an embodiment of the present invention is shown.

[0018] Figure 2 A top view schematic diagram of a packing assembly / disassembly device according to an embodiment of the present invention is shown.

[0019] In this application, all the accompanying drawings are schematic drawings, used only to illustrate the principle of the present invention, and are not drawn to scale. Detailed Implementation

[0020] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] In the description of the utility model, it should be understood that the terms "inner" and "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0022] In this utility model, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] like Figures 1 to 2 As shown, this utility model provides a packing assembly / disassembly device 100. The packing is fitted onto the plunger of a plunger pump and press-fitted into a sealing material box. The device includes: a cylindrical body 1 fitted onto the outer surface of the plunger and capable of rotating around the plunger, and an arc-shaped plate 11 disposed at the end of the cylindrical body 1 near the sealing material box. The arc of the arc plate 11 is the same as the arc of the inner wall of the sealing material box, and its end head is inserted into the cut of the packing inside the sealing material box to connect with the packing.

[0024] The working principle of the packing removal and installation device 100 of this utility model is briefly described below. When it is necessary to remove a damaged packing from the sealing material box, the cylinder 1 is placed around the periphery of the plunger, and the end of the arc-shaped plate 11 is inserted into the cut of the packing inside the sealing material box. Then, by rotating the cylinder 1, the arc-shaped plate 11 applies an axial force away from the sealing material box to the packing inside the sealing material box, so as to remove the packing from the plunger. Conversely, when it is necessary to install a new packing, the cylinder 1 is placed around the periphery of the plunger, the packing is placed on the outer surface of the plunger near the sealing material box, and the end of the arc-shaped plate 11 is inserted into the cut of the new packing. By rotating the cylinder 1 in the opposite direction, the arc-shaped plate 11 applies an axial force towards the sealing material box to the packing inside the sealing material box, so as to push it into the sealing material box.

[0025] According to this utility model, a cylindrical body 1 is provided, which is fitted onto the outer surface of a plunger and can rotate around the plunger, and an arc-shaped plate 11 is provided at the end of the cylindrical body 1 near the sealing material box. Since the curvature of the arc-shaped plate 11 is the same as the curvature of the inner wall of the sealing material box, and its end head is inserted into the notch of the packing, the packing can be installed and removed by rotating the cylindrical body 1. During the installation and removal process, the arc-shaped plate 11 applies an axial force to the packing inside the sealing material box, which is not limited by the narrow space between the sealing material box and the plunger, thus saving effort and facilitating operation, and improving the packing replacement efficiency.

[0026] In one or more embodiments, a connecting plate 12 is connected to the end of the cylinder 1 near the sealing material box. The connecting plate 12 is constructed in an arc shape, and its outer diameter is the same as the outer diameter of the cylinder 1. An arc-shaped plate 11 is fixedly disposed on the outer surface of the connecting plate 12. Optionally, the arc-shaped plate 11 is fixedly disposed on the outer surface of the end of the connecting plate 12 by welding.

[0027] In one or more embodiments, the outer surface of the arc plate 11 forms a 45° angle with the outer surface of the connecting plate 12, thereby facilitating the application of an axial force by the arc plate 11 to the packing inside the sealing material box during the rotation of the cylinder 1.

[0028] In one or more embodiments, the outer diameter of the arc plate 11 is larger than the outer diameter of the cylinder 1.

[0029] In one or more embodiments, the cylinder 1 includes a first semi-cylindrical body 13 and a second semi-cylindrical body 14. The first semi-cylindrical body and the second semi-cylindrical body 14 have the same structure and are connected by snap-fit ​​to form the cylinder 1, thereby facilitating the installation of the cylinder 1 onto the outer periphery of the plunger. A connecting plate 12 is connected to the end of the first semi-cylindrical body 13 or the second semi-cylindrical body 14 near the sealing material box. Optionally, the first semi-cylindrical body 13 or the second semi-cylindrical body 14 is integrally formed with the connecting plate 12.

[0030] In one or more embodiments, the inner walls of both the first semi-cylindrical body 13 and the second semi-cylindrical body 14 are provided with protective pads (not shown in the figures). Optionally, the protective pads can be rubber. By providing protective pads, damage to the plunger is avoided during the rotation of the cylinder 1.

[0031] In one or more embodiments, a handle 2 is provided on the outer surface of both the first semi-cylindrical body 13 and the second semi-cylindrical body 14.

[0032] Although the present invention has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of the invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A device for installing and removing packing, wherein the packing is fitted onto the plunger of a plunger pump and press-fitted into a sealing material box, characterized in that, It includes: a cylindrical body that is fitted onto the outer surface of the plunger and is rotatable around the plunger, and an arc-shaped plate disposed at the end of the cylindrical body near the sealing material box, the arc of the arc-shaped plate being the same as the arc of the inner wall of the sealing material box, and its end head being inserted into the cut of the packing to connect with the packing.

2. The packing assembly / disassembly device according to claim 1, characterized in that, A connecting plate is connected to the end of the cylinder near the sealing material box. The connecting plate is constructed in an arc shape, and its outer diameter is the same as that of the cylinder. The arc-shaped plate is fixedly disposed on the outer surface of the connecting plate.

3. The packing assembly / disassembly device according to claim 2, characterized in that, The arc-shaped plate is fixedly mounted on the outer surface of the end of the connecting plate by welding.

4. The packing assembly / disassembly device according to claim 3, characterized in that, The arc-shaped plate forms a 45° angle with the outer surface of the connecting plate.

5. The packing assembly / disassembly device according to any one of claims 1 to 4, characterized in that, The outer diameter of the arc-shaped plate is larger than the outer diameter of the cylinder.

6. The packing assembly / disassembly device according to claim 2, characterized in that, The cylinder body includes a first semi-cylindrical body and a second semi-cylindrical body. The first semi-cylindrical body and the second semi-cylindrical body have the same structure and are connected as one piece by snap fasteners.

7. The packing assembly / disassembly device according to claim 6, characterized in that, The connecting plate is connected to the end of the first or second semi-cylindrical body near the sealing material box.

8. The packing assembly / disassembly device according to claim 7, characterized in that, The first semi-cylindrical body or the second semi-cylindrical body is integrally formed with the connecting plate.

9. The packing assembly / disassembly device according to any one of claims 6 to 8, characterized in that, The inner walls of both the first and second semi-cylindrical bodies are provided with protective pads.

10. The packing assembly / disassembly device according to claim 9, characterized in that, Handles are provided on the outer surfaces of both the first and second semi-cylindrical bodies.

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