Disassembling tool suitable for hollow plunger body of plunger pump

Abstract

The utility model discloses a disassembling tool suitable for a hollow plunger body of a plunger pump. The disassembling tool solves the technical problem that the plunger body is difficult to disassemble quickly. The dismounting tool comprises a tool body, a push rod contact face is arranged at one end of the tool body, a plunger contact face is arranged at the other end of the tool body, and the push rod contact face is used for being tightly connected with a push rod connector at the pump power end of the plunger pump in an abutting mode to form pushing force. The plunger contact face is used for being tightly connected with the end face of a plunger body of the plunger pump in an abutting mode so as to transmit thrust. By means of the plunger pump, it can be guaranteed that the plunger body is disassembled quickly and smoothly, the risk that the hands of workers are injured is reduced, the risk that the plunger pump is damaged can be reduced, and the working efficiency can be improved.

Description

A tool for disassembling hollow plunger bodies in plunger pumps Technical Field

[0001] This utility model belongs to the technical field of cementing equipment systems for petroleum equipment, specifically relating to a disassembly tool suitable for hollow plunger bodies in plunger pumps. Background Technology

[0002] In oilfield cementing equipment, high-pressure plunger cementing pumps generally use hollow plunger bodies. When replacing packing at the hydraulic end of the pump for maintenance, the plunger body is usually disassembled by turning the jack and using the power end and related tools to push the plunger body into the hydraulic end pump chamber.

[0003] However, during the disassembly of the plunger body of the 4" cementing pump, the gap between the inner bore of the 4" plunger and the short tie rod of the plunger is too small, and ordinary disassembly tools cannot be inserted. Only a suitable length of screw or other temporary substitute can be found. When using it, one person rotates the pump while another person holds the substitute and inserts it between the power end and the hydraulic end to push the plunger into the hydraulic end pump chamber.

[0004] However, temporary replacements have the following drawbacks:

[0005] 1. The replacement parts cannot fit well with the plunger body and plunger rod, which can easily injure the workers' hands;

[0006] 2. If the replacement part is not placed properly, there is a problem of the replacement part slipping off. It is necessary to rotate the machine again and wait for the gap to be appropriate before inserting the ejector plunger again.

[0007] 3. If the replacement part is not placed in the correct position, it will cause uneven stress, which may easily damage the plunger short rod and other components inside the cylinder. Summary of the Invention

[0008] In order to solve all or some of the above problems, the purpose of this utility model is to provide a disassembly tool suitable for the hollow plunger body of a plunger pump, which can ensure quick and smooth disassembly of the plunger body, reduce the risk of hand injury to workers, reduce the risk of plunger pump damage, and improve work efficiency.

[0009] This utility model provides a disassembly tool suitable for hollow plunger bodies of plunger pumps, including a tool body. One end of the tool body is provided with a push rod contact surface and the other end is provided with a plunger contact surface. The push rod contact surface is used to tightly abut against the push rod joint of the pump power end of the plunger pump to form thrust, and the plunger contact surface is used to tightly abut against the end face of the plunger body of the plunger pump to transmit thrust.

[0010] Optionally, the tool body includes a semi-cylindrical support body, on which a balance hole is provided along its axial direction. The balance hole is used to closely cooperate with the plunger rod of the plunger pump to form the same force-bearing plane.

[0011] Optionally, the support body is provided with a positioning groove at one end of the contact surface of the push rod. The positioning groove communicates with the balance hole and is used to tightly engage with the external hexagonal nut on the plunger rod of the plunger pump to form a positioning.

[0012] Optionally, the support body is provided with a semi-circular first receiving ring at one end near the push rod contact surface and a semi-circular second receiving ring at one end near the plunger contact surface, and the first receiving ring and the second receiving ring are respectively arranged along the circumference of the support body.

[0013] Optionally, the end faces of the first receiving ring and the support body are flush, and the end faces of the first receiving ring and the support body together form the push rod contact surface.

[0014] Optionally, the end faces of the second receiving ring and the support body are flush, and the end faces of the second receiving ring and the support body together form the plunger contact surface.

[0015] Optionally, the first receiving ring and the second receiving ring are integrally formed and connected to the support body.

[0016] Optionally, the tool body is made of metal.

[0017] As can be seen from the above technical solution, the disassembly tool for hollow plunger bodies of plunger pumps provided by this utility model has the following advantages:

[0018] This disassembly tool can be easily inserted without slipping or requiring manual support, reducing the risk of hand injury. Simultaneously, the positioning groove ensures a natural and stable positioning of the disassembly tool and the plunger rod. Furthermore, the push rod contact surface and the plunger contact surface are both semi-circular annular surfaces. The push rod contact surface can make tight contact with the push rod connector on the pump's power end, and the plunger contact surface can fit against the end face of the plunger body to transmit thrust, thus achieving uniform force distribution and preventing damage to other components within the hydraulic end.

[0019] Other features and advantages of this invention will be set forth in the following description. Attached Figure Description

[0020] The accompanying drawings are provided to further understand the technical solution of this utility model and constitute a part of the specification. They are used together with the embodiments of this utility model to explain the technical solution of this utility model, and do not constitute a limitation on the technical solution of this utility model.

[0021] Figure 1 is a front view of the disassembly tool in an embodiment of this utility model;

[0022] Figure 2 is a side view of the disassembly tool in an embodiment of this utility model;

[0023] Figure 3 is a bottom view of the disassembly tool in an embodiment of this utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Tool body; 11. Support body; 12. Balance hole; 13. Positioning groove; 14. First receiving ring; 15. Second receiving ring; 2. Push rod contact surface; 3. Plunger contact surface. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described herein can be arbitrarily combined with each other.

[0027] Figures 1, 2, and 3 show an embodiment of this utility model, which discloses a disassembly tool suitable for hollow plunger bodies of plunger pumps. The tool body 1 is cylindrical, with a push rod contact surface 2 at one end and a plunger contact surface 3 at the other end. The push rod contact surface 2 is used to tightly abut against the push rod joint of the pump power end of the plunger pump to form thrust, and the plunger contact surface 3 is used to tightly abut against the end face of the plunger body of the plunger pump to transmit thrust.

[0028] In one embodiment, as shown in Figures 1, 2, and 3, the tool body 1 includes a semi-cylindrical support body 11. A balance hole 12 is provided on the support body 11 along its axial direction. The balance hole 12 is used to tightly engage with the plunger rod of the plunger pump to form the same force-bearing plane. A positioning groove 13 is provided at one end of the support body 11 located on the push rod contact surface 2. The positioning groove 13 communicates with the balance hole 12 and is used to tightly engage with the external hexagonal nut on the plunger rod of the plunger pump to form a positioning.

[0029] In this embodiment, the disassembly tool has a positioning groove 13 that fits tightly with the external hexagonal nut on the plunger rod of the plunger pump to form a positioning. The balance hole 12 fits with the plunger rod of the plunger pump to form the same force plane. By rotating the wheel to obtain the gap, the positioning groove 13 is used for positioning, and the balance hole 12 is used to balance the force so that it is on the same horizontal plane. The hollow plunger body is successfully pushed out by rotating the wheel again using the push rod contact surface 2 and the plunger contact surface 3.

[0030] In one embodiment, as shown in Figures 1 and 2, a semi-circular first receiving ring 14 is integrally formed at one end of the support body 11 near the push rod contact surface 2, and a semi-circular second receiving ring 15 is integrally formed at one end of the support body 11 near the plunger contact surface 3, and the first receiving ring 14 and the second receiving ring 15 are respectively arranged along the circumference of the support body 11.

[0031] In one embodiment, as shown in Figures 1 and 2, the end faces of the first receiving ring 14 and the support body 11 are flush, and the end faces of the first receiving ring 14 and the support body 11 together form the push rod contact surface 2. The end faces of the second receiving ring 15 and the support body 11 are flush, and the end faces of the second receiving ring 15 and the support body 11 together form the plunger contact surface 3. This design can increase the area of ​​the push rod contact surface 2 and the plunger contact surface 3, ensuring stable force transmission, and also improving the structural strength of the tool body 1.

[0032] In one embodiment, as shown in Figures 1 and 2, the tool body 1 is made of metal to improve structural strength. In this embodiment, the tool body 1 can be made of hard metal materials such as stainless steel and carbon steel. In other embodiments, other metals with a certain degree of hardness can also be used, which will not be listed in detail again.

[0033] The disassembly tool in this embodiment is used as follows:

[0034] When the clearance after turning the cylinder is greater than the length of the tool body 1, insert the disassembly tool, ensuring that the positioning groove 13 engages with the external hexagonal nut on the plunger rod of the plunger pump to form a positioning, and the balance hole 12 engages with the plunger rod of the plunger pump to form a force at the same horizontal level. At this time, the push rod contact surface 2 contacts the push rod joint at the pump power end of the plunger pump to form a thrust, and the plunger contact surface 3 contacts the plunger body end face of the plunger pump to transmit the thrust, so that the plunger body is smoothly pushed out.

[0035] As can be seen from the above, using this disassembly tool has the following advantages:

[0036] (1) This disassembly tool can ensure that the power transmission is at the same level, avoiding the problems of existing disassembly tools being prone to slipping and power transmission not being centered;

[0037] (2) This disassembly tool can quickly and effectively disassemble the hollow plunger body of the plunger pump, avoid hand injuries and damage to the cold cylinder internal components of the plunger pump, and also improve work efficiency.

[0038] (3) This disassembly tool is applicable to the disassembly of piston bodies of different sizes in the hollow piston body of the piston pump, and has strong versatility.

[0039] It should be noted that, unless otherwise stated, the technical or scientific terms used in this utility model shall have the ordinary meaning as understood by those skilled in the art to which this utility model pertains.

[0040] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly defined.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This utility model is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A tool for disassembling hollow plunger bodies in plunger pumps, characterized in that, The tool body (1) is provided with a push rod contact surface (2) at one end and a plunger contact surface (3) at the other end. The push rod contact surface (2) is used to closely abut against the push rod joint of the pump power end of the plunger pump to form thrust. The plunger contact surface (3) is used to closely abut against the end face of the plunger body of the plunger pump to transmit thrust.

2. The disassembly tool according to claim 1, characterized in that, The tool body (1) includes a semi-cylindrical support (11), and a balance hole (12) is provided on the support (11) along its axial direction. The balance hole (12) is used to closely cooperate with the plunger rod of the plunger pump to form the same force plane.

3. The disassembly tool according to claim 2, characterized in that, The support body (11) is provided with a positioning groove (13) at one end of the push rod contact surface (2). The positioning groove (13) is connected to the balance hole (12), and the positioning groove (13) is used to fit tightly with the external hexagonal nut on the plunger rod of the plunger pump to form a positioning.

4. The disassembly tool according to claim 2, characterized in that, The support body (11) has a semi-circular first receiving ring (14) at one end near the push rod contact surface (2) and a semi-circular second receiving ring (15) at one end near the plunger contact surface (3), and the first receiving ring (14) and the second receiving ring (15) are respectively arranged along the circumference of the support body (11).

5. The disassembly tool according to claim 4, characterized in that, The end faces of the first receiving ring (14) and the support body (11) are flush, and the end faces of the first receiving ring (14) and the support body (11) together form the push rod contact surface (2).

6. The disassembly tool according to claim 4, characterized in that, The end faces of the second receiving ring (15) and the support body (11) are flush, and the end faces of the second receiving ring (15) and the support body (11) together form the plunger contact surface (3).

7. The disassembly tool according to claim 5 or 6, characterized in that, The first receiving ring (14) and the second receiving ring (15) are integrally formed and connected to the support body (11).

8. The disassembly tool according to claim 1, characterized in that, The tool body (1) is made of metal.

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