Piston rod for petroleum drilling

Abstract

The utility model discloses and provides a piston rod for petroleum drilling, which comprises a piston seat, one end of the piston seat is connected with a piston rod, one end of the piston rod is provided with a connecting rod, the inner wall of the piston rod is provided with a cavity, and one end of a second connecting block is connected with an operating ring. The piston rod and the oil storage pipe are both provided with a plurality of groups of oil outlets, lubricating oil is stored in the inner wall of the oil storage pipe, and the relative position between the piston rod and the oil storage pipe can be automatically adjusted under the action of the spring according to different pressures and speeds when the piston rod reciprocates in the slurry pump. Due to the design of the multiple sets of oil outlets, lubricating oil can be evenly smeared on the surface of the piston rod and the contact face between the piston and the cylinder body, abrasion caused by friction is effectively reduced, and the service life of the piston rod and the service life of the cylinder body are prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of piston rods, in particular to a piston rod for oil drilling. Background Art

[0002] In oil drilling operations, the piston rod is one of the key components of the mud pump, and its performance directly affects the working efficiency and service life of the mud pump. Traditional oil drilling piston rods often suffer from wear and jamming under long-term, high-load working conditions, resulting in interruptions in drilling operations and affecting work efficiency. Therefore, higher requirements are placed on the performance of oil drilling piston rods.

[0003] In order to solve these problems, many piston rod design schemes try to optimize the structure and materials to improve its wear resistance and service life. However, these schemes often ignore the importance of lubrication of the piston rod during operation. Poor lubrication will increase the friction between the piston rod and the cylinder body, which not only increases energy consumption, but also easily causes wear and failure. Utility Model Content

[0004] (I) Purpose of the utility model

[0005] In view of this, the purpose of the utility model is to provide a piston rod for oil drilling, which solves the problems raised in the above background.

[0006] (II) Technical solution

[0007] A piston rod for oil drilling comprises a piston seat, one end of the piston seat is connected to the piston rod, and one end of the piston rod is provided with a connecting rod, the inner wall of the piston rod is provided with a cavity, and the bottom end of the cavity is fixedly installed with multiple groups of limiting rings, the inner walls of the multiple groups of limiting rings are all installed with springs, and one end of the spring is connected to a movable rod, one end of the movable rod is connected to an oil storage pipe, and one end of the oil storage pipe is connected to a second connecting block, the outer surface of the second connecting block is provided with threads, and one end of the second connecting block is connected to an operating ring, the outer surfaces of the piston rod and the oil storage pipe are provided with multiple groups of oil outlets, and the inner wall of the oil storage pipe stores lubricating oil.

[0008] Preferably, a thread is provided on the inner wall at one end of the piston rod, and a first connecting block is movably mounted on the inner wall of the piston rod, and a rotating ring is fixedly mounted on one end of the first connecting block. The first connecting block can be easily installed inside the piston rod through the thread on the inner wall of the piston rod, and can be disassembled as needed, making the maintenance and replacement of parts of the piston rod more convenient and improving work efficiency, and the rotating ring is convenient for operation and use.

[0009] Preferably, the outer surface of the rotating ring is serrated. In certain special working environments, such as those with a lot of oil or where high friction is required, the serrated design can better adapt to these conditions and maintain the stability and functionality of the rotating ring.

[0010] Preferably, a handle is fixedly installed on the inner wall of the operating ring. By fixing the handle on the inner wall of the operating ring, an intuitive and easy-to-grip part can be provided to the operator, so that when operations on the piston rod are required, such as rotation, movement or fixing, can be completed more conveniently and quickly.

[0011] Preferably, the outer surface of the handle is wrapped with rubber, and the friction of the rubber surface is relatively large, which can effectively prevent the hand from sliding during operation and increase the stability of the grip, so that people can open the second connecting block, which makes it easier for people to add lubricating oil.

[0012] Preferably, the oil outlet positions of the multiple groups of piston rods and the oil storage tubes are the same. Since the oil outlet positions of the piston rods and the oil storage tubes are the same, the lubricating oil can be more evenly distributed on the surfaces of the piston rods and the oil storage tubes. Uniform lubrication helps to reduce wear and friction caused by uneven lubrication, thereby improving the working efficiency and durability of the piston rod.

[0013] Preferably, the outer surface of the piston seat is in an arc shape, and the arc-shaped design makes the outer surface of the piston seat smoother, reduces the contact area with surrounding components or the cylinder body, and thus reduces friction and wear. This helps to extend the service life of the piston seat and improve the stability and reliability of the entire piston rod system.

[0014] It can be seen from the above technical solutions that the present application has the following beneficial effects:

[0015] 1. The utility model can automatically adjust the relative position between the movable rod and the oil storage pipe according to the different pressures and speeds of the piston rod when it reciprocates in the mud pump under the action of the spring. The design of multiple sets of oil outlets allows the lubricating oil to be evenly applied to the surface of the piston rod and the contact surface between the piston and the cylinder body, effectively reducing the wear caused by friction and extending the service life of the piston rod and the cylinder body. The adaptive lubrication adjustment mechanism ensures that the piston rod can obtain just the right lubrication under different working conditions, avoiding wear caused by insufficient lubrication and preventing oil consumption and pollution problems caused by excessive lubrication.

[0016] 2. The utility model allows the first connecting block to be easily installed inside the piston rod through the inner wall thread of the piston rod, and can be disassembled as needed, making the maintenance and replacement of parts of the piston rod more convenient and improving work efficiency. The rotating ring is easy to operate and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the explosion structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the cross-sectional structure of the utility model;

[0020] Figure 4 For this utility model Figure 2 The enlarged schematic diagram at A in the middle;

[0021] Figure 5 For this utility model Figure 3 Enlarged schematic diagram of point B in the middle.

[0022] In the figure: 1. piston seat; 2. piston rod; 3. oil outlet; 4. rotating ring; 5. connecting rod; 6. oil storage pipe; 7. first connecting block; 8. operating ring; 9. second connecting block; 811. handle; 611. limit ring; 612. movable rod. DETAILED DESCRIPTION

[0023] The following description is merely exemplary in nature and is not intended to limit the present disclosure, application, and use. It should be understood that in all of these figures, the same or similar reference numerals indicate the same or similar parts and features. The various drawings only schematically represent the concepts and principles of the embodiments of the present disclosure, and do not necessarily show the specific dimensions and proportions of the various embodiments of the present disclosure. Specific parts in specific drawings may be exaggerated to illustrate the relevant details or structures of the embodiments of the present disclosure.

[0024] See also Figure 1-5 , an embodiment provided by the utility model:

[0025] A piston rod for oil drilling comprises a piston seat 1, one end of the piston seat 1 is connected to a piston rod 2, and one end of the piston rod 2 is provided with a connecting rod 5, the inner wall of the piston rod 2 is provided with a cavity, and the bottom end of the cavity is fixedly installed with multiple groups of limit rings 611, the inner walls of the multiple groups of limit rings 611 are all installed with springs, and one end of the spring is connected to a movable rod 612, one end of the movable rod 612 is connected to an oil storage pipe 6, and one end of the oil storage pipe 6 is connected to a second connecting block 9, the outer surface of the second connecting block 9 is provided with threads, and one end of the second connecting block 9 is connected to an operating ring 8, the outer surfaces of the piston rod 2 and the oil storage pipe 6 are provided with multiple groups of oil outlets 3, and the inner wall of the oil storage pipe 6 stores lubricating oil.

[0026] Furthermore, a thread is provided on the inner wall at one end of the piston rod 2, and a first connecting block 7 is movably installed on the inner wall of the piston rod 2, and a rotating ring 4 is fixedly installed on one end of the first connecting block 7. Through the thread, the first connecting block 7 can be easily installed inside the piston rod 2 and can be disassembled as needed, making the maintenance and replacement of parts of the piston rod 2 more convenient and improving work efficiency. The rotating ring 4 is convenient to operate and use.

[0027] Furthermore, the outer surface of the rotating ring 4 is serrated. In certain special working environments, such as those with a lot of oil or where high friction is required, the serrated design can better adapt to these conditions and maintain the stability and functionality of the rotating ring.

[0028] Furthermore, a handle 811 is fixedly installed on the inner wall of the operating ring 8. By fixing the handle 811 on the inner wall of the operating ring 8, an intuitive and easy-to-grip part can be provided to the operator, so that when operations on the piston rod 8 are required, such as rotation, movement or fixing, can be completed more conveniently and quickly.

[0029] Furthermore, the outer surface of the handle 811 is wrapped with rubber. The friction of the rubber surface is relatively large, which can effectively prevent the hand from sliding during operation and increase the stability of holding, so that people can open the second connecting block 9, which makes it easier for people to add lubricating oil.

[0030] Furthermore, the oil outlet 3 of multiple groups of piston rods 2 and the oil storage pipe 6 are at the same position. Since the oil outlet 3 of the piston rod 2 and the oil storage pipe 6 are at the same position, the lubricating oil can be more evenly distributed on the surface of the piston rod and the oil storage pipe. The uniform lubrication helps to reduce the wear and friction caused by uneven lubrication, thereby improving the working efficiency and durability of the piston rod 2.

[0031] Furthermore, the outer surface of the piston seat 1 is in an arc shape, and the arc-shaped design makes the outer surface of the piston seat 1 smoother, reducing the contact area with surrounding components or the cylinder body, thereby reducing friction and wear. This helps to extend the service life of the piston seat and improve the stability and reliability of the entire piston rod system.

[0032] Working principle: Multiple groups of limit rings 611 are arranged in the cavity opened on the inner wall of the piston rod 2. These limit rings 611 not only play a fixing role, but also are connected to the movable rod 612 through the spring installed on its inner wall. The existence of the spring enables the movable rod 612 to move freely within a certain range to adapt to the different pressures and speeds of the piston rod 2 during operation. The oil storage pipe 6 is connected to the structure in the cavity through the movable rod 612, and an appropriate amount of lubricating oil is stored inside the oil storage pipe 6. When the piston rod 2 reciprocates in the mud pump, the movable rod 612, under the action of the spring, will adjust the relative position between it and the oil storage pipe 6 according to the movement state of the piston rod, thereby controlling the outflow of lubricating oil. One end of the oil storage pipe 6 is connected to the operating ring 8 through the second connecting block 9. The threaded structure opened on the outer surface of the second connecting block 9 makes the connection more firm and reliable, and the operating ring 8 can ensure the stable connection between the oil storage pipe 6 and the piston rod 2. The multiple groups of oil outlets 3 provided on the outer surface of the piston rod 2 and the oil storage tube 6 play a role in evenly applying the lubricating oil to the surface of the piston rod and the contact surface between the piston and the cylinder body.

[0033] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A piston rod for oil drilling, comprising a piston seat (1), one end of the piston seat (1) is connected to a piston rod (2), and one end of the piston rod (2) is provided with a connecting rod (5), characterized in that: The inner wall of the piston rod (2) is provided with a cavity, and a plurality of limit rings (611) are fixedly installed at the bottom end of the cavity. The inner walls of the plurality of limit rings (611) are all provided with springs, and one end of the spring is connected to a movable rod (612). One end of the movable rod (612) is connected to an oil storage pipe (6), and one end of the oil storage pipe (6) is connected to a second connecting block (9). The outer surface of the second connecting block (9) is provided with a thread, and one end of the second connecting block (9) is connected to an operating ring (8). The outer surfaces of the piston rod (2) and the oil storage pipe (6) are both provided with a plurality of oil outlets (3), and the inner wall of the oil storage pipe (6) stores lubricating oil.

2. The piston rod for oil drilling according to claim 1, characterized in that: The inner wall of one end of the piston rod (2) is provided with a thread, and a first connecting block (7) is movably mounted on the inner wall of the piston rod (2), and a rotating ring (4) is fixedly mounted on one end of the first connecting block (7).

3. The piston rod for oil drilling according to claim 2, characterized in that: The outer surface of the rotating ring (4) is in a sawtooth shape.

4. The piston rod for oil drilling according to claim 1, characterized in that: A handle (811) is fixedly mounted on the inner wall of the operating ring (8).

5. The piston rod for oil drilling according to claim 4, characterized in that: The outer surface of the handle (811) is covered with rubber.

6. The piston rod for oil drilling according to claim 1, characterized in that: The oil outlets (3) of the multiple groups of piston rods (2) and the oil storage pipes (6) are located at the same position.

7. The piston rod for oil drilling according to claim 1, characterized in that: The outer surface of the piston seat (1) is in an arc shape.

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