Sucker rod anti-eccentric wear device and sucker rod

Abstract

The present invention relates to the technical field of anti-eccentric wear of sucker rods, specifically to an anti-eccentric wear device for sucker rods and a sucker rod thereof, including a limiting device, which is detachably mounted on the lower end of the outer wall of the sucker rod and contacts the inner wall of the pipe, and can limit the lowering of the sucker rod and guide the bottom end of the sucker rod at the same time; a connecting assembly, which is detachably mounted in the middle of the outer wall of the sucker rod and can connect the anti-eccentric wear device to the sucker rod; the anti-eccentric wear device is arranged around the outer wall of the connecting assembly and contacts the inner wall of the pipe, and can guide and limit the lowering of the sucker rod; the limiting device includes: a bottom sleeve, the inner wall of which contacts the lower end of the outer wall of the sucker rod and is squeezed at the connection at the lower end of the sucker rod. The present invention reduces friction, prevents the sucker pipe from rupturing and prevents the sucker rod from colliding and breaking, and increases the service life of the sucker rod and the sucker pipe.

Description

Technical Field

[0001] The invention relates to the technical field of anti-eccentric wear of sucker rods, in particular to a sucker rod anti-eccentric wear device and a sucker rod thereof. Background Art

[0002] The sucker rod is a slender rod in the pumping well. It is connected to the polished rod at the top and the oil pump at the bottom to transmit power.

[0003] In the existing oil field development process, it is necessary to put the sucker rod into the pipeline and dive it, so that the sucker rod contacts the underground oil and can extract the underground oil. When placing the sucker rod, in order to prevent the sucker rod from deviating greatly during diving, the sucker rod needs to be close to the inner wall of one side of the pipeline and lowered. Due to the friction between the pipe and the rod, it is easy to cause the sucker rod to break and the oil pipe to wear through. Moreover, since the lowered sucker rod cannot be limited, the lowering position of the sucker rod cannot be well controlled when the sucker rod dives, which easily causes the sucker rod to collide with the pipeline, and it is also easy to cause the sucker rod to break and the oil pipe to be damaged. For this reason, we propose a sucker rod anti-wear device and a sucker rod thereof. Summary of the Invention

[0004] In view of the above-mentioned and / or existing problems in a sucker rod anti-eccentric wear device and sucker rod thereof, the present invention is proposed.

[0005] Therefore, the purpose of the present invention is to provide a sucker rod anti-eccentric wear device and its sucker rod, by installing a limit device at the lower end of the sucker rod and then installing a connecting assembly in the middle of the sucker rod, and by adjusting the angle of the anti-eccentric wear device, the limit device and the anti-eccentric wear device can both contact the inner wall of the pipeline, thereby causing the sucker rod to move downward, which can solve the above-mentioned existing problems.

[0006] To solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0007] A sucker rod anti-eccentric wear device and a sucker rod thereof, comprising:

[0008] The limiting device is detachably mounted on the lower end of the outer wall of the sucker rod and contacts the inner wall of the pipe. It can limit the lowering of the sucker rod and guide the bottom end of the sucker rod.

[0009] A connecting assembly is detachably mounted in the middle of the outer wall of the sucker rod and is capable of connecting the anti-eccentric wear device to the sucker rod;

[0010] The anti-eccentric wear device is arranged around the outer wall of the connecting component and contacts the inner wall of the pipeline, and can guide and limit the lowering of the sucker rod.

[0011] As a preferred embodiment of the sucker rod anti-eccentric wear device and the sucker rod thereof according to the present invention, the limiting device includes:

[0012] The bottom sleeve has an inner wall that contacts the lower end of the outer wall of the sucker rod and is squeezed at the connection of the lower end of the sucker rod;

[0013] The convex block is arranged on the top of the bottom sleeve and contacts the connection of the sucker rod, and can squeeze the bottom sleeve to the connection of the lower end of the sucker rod to fix it.

[0014] As a preferred embodiment of the sucker rod anti-eccentric wear device and the sucker rod thereof according to the present invention, the bottom sleeve includes:

[0015] Connecting blocks are provided at both ends of the top and bottom of the bottom sleeve and are capable of connecting the bottom sleeve;

[0016] The rubber ball is rotatably connected to the outer wall of the bottom sleeve and contacts the inner wall of the pipe, and can limit and guide the lower end of the sucker rod.

[0017] As a preferred solution of the sucker rod anti-eccentric wear device and the sucker rod thereof described in the present invention, the bottom sleeves are provided in two groups, and the two groups of bottom sleeves are connected by a connecting block.

[0018] As a preferred embodiment of the sucker rod anti-eccentric wear device and the sucker rod thereof according to the present invention, the connecting assembly includes:

[0019] The inner wall of the connecting sleeve contacts the middle of the outer wall of the sucker rod, and the outer wall is connected with the anti-eccentric wear device around.

[0020] As a preferred embodiment of the pumping rod anti-eccentric wear device and the pumping rod thereof according to the present invention, the connecting sleeve includes:

[0021] Mounting blocks are provided at both ends of the top and bottom of the connecting sleeve and are capable of connecting the connecting sleeve;

[0022] The arc mouth is arranged on the inner side of the connecting sleeve and contacts the middle of the outer wall of the sucker rod, and can clamp the sucker rod.

[0023] As a preferred solution of the sucker rod anti-eccentric wear device and the sucker rod thereof described in the present invention, the connecting sleeves are provided in two groups, and the two groups of connecting sleeves are connected by a mounting block.

[0024] As a preferred embodiment of the present invention, the device for preventing eccentric wear of a sucker rod and the sucker rod thereof, wherein the eccentric wear device comprises:

[0025] A rotary adjustment seat is arranged around the outer wall of the connecting sleeve and is internally connected to the rotary rod via an adjusting bolt;

[0026] The bottom end of the rotating rod is rotatably connected to the inside of the rotating adjustment seat, and the rotation tightness can be controlled by adjusting the bolt;

[0027] A groove is provided at the upper end of the outer wall of the rotating rod and can be mounted with the limiting rod;

[0028] An adjustment plate is rotatably connected to the upper end of the rotating rod, and the tightness of the rotation can be adjusted by adjusting the bolt;

[0029] The rubber roller is rotatably connected to the inner periphery of the adjusting plate and can come into contact with the inner wall of the pipe.

[0030] As a preferred embodiment of the pumping rod anti-eccentric wear device and the pumping rod thereof according to the present invention, the anti-eccentric wear device further comprises:

[0031] The limiting rod is rotatably connected to the periphery of the upper end of the outer wall of the connecting sleeve through a rotating adjustment seat and can be inserted into the interior of the groove to limit the rotating rod.

[0032] A sucker rod, comprising a sucker rod;

[0033] The sucker rod comprises:

[0034] an upper connecting rod, the lower end of which is threadedly connected to the connecting rod;

[0035] A connecting rod, the upper end of which is threadedly connected to the bottom of the upper connecting rod, the lower end of which is threadedly connected to the top of the bottom rod, and the outer wall of which is detachably mounted with a connecting sleeve;

[0036] The upper end of the bottom rod is threadedly connected to the connecting rod, and the bottom sleeve is squeezed and fixed between the bottom of the connecting rod and the bottom of the bottom rod.

[0037] Compared with existing technologies:

[0038] The limit device can contact the inner wall of the pipe, thereby limiting the lowering of the sucker rod and guiding the bottom end of the sucker rod to prevent the bottom rod from deflecting when lowering, making it easier to lower the sucker rod. The rubber ball rotates and slides downward to reduce friction with the pumping pipe, thereby preventing the pumping pipe from rupturing and the sucker rod from colliding and breaking, thereby increasing the service life of the sucker rod and the pumping pipe.

[0039] The anti-eccentric wear device can be connected to the sucker rod through the connecting assembly, and the anti-eccentric wear device can be placed and operated;

[0040] By making contact with the inner wall of the pipe through the anti-eccentric wear device, the lowering of the sucker rod can be guided and limited, and the corresponding pipe diameter can be adjusted so that the rubber roller contacts the inner wall of the pipe for sliding, thereby reducing friction, preventing the sucker pipe from rupturing and preventing the sucker rod from colliding and breaking, and increasing the service life of the sucker rod and the sucker pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 A schematic diagram of the overall structure provided by the present invention;

[0042] Figure 2 A schematic diagram of the sucker rod structure provided by the present invention;

[0043] Figure 3 A schematic diagram of the connection structure of the limiting device provided by the present invention;

[0044] Figure 4 A schematic diagram of the connection structure of the anti-eccentric wear device provided by the present invention;

[0045] Figure 5 A schematic structural diagram of the anti-eccentric wear device provided by the present invention;

[0046] Figure 6 This is a schematic structural diagram of the limiting device provided by the present invention.

[0047] In the figure: sucker rod 1, upper connecting rod 11, connecting rod 12, bottom rod 13, limit device 2, bottom sleeve 21, protrusion 22, connecting block 23, rubber ball 24, connecting assembly 3, connecting sleeve 31, mounting block 32, arc mouth 33, anti-eccentric wear device 4, rotary adjustment seat 41, rotating rod 42, groove 43, adjustment plate 44, rubber roller 45, limit rod 46. DETAILED DESCRIPTION

[0048] To make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0049] The present invention provides a sucker rod anti-eccentric wear device and a sucker rod thereof, which has the advantages of reducing friction, preventing the sucker pipe from breaking and preventing the sucker rod 1 from colliding and breaking, and increasing the service life of the sucker rod 1 and the sucker pipe. Figure 1-6 , including a sucker rod 1, a limiting device 2, a connecting assembly 3 and an anti-eccentric wear device 4;

[0050] The outer wall of the sucker rod 1 is installed with a limiting device 2 and a connecting assembly 3. The sucker rod 1 can be used to lower the oil pumping pipeline to extract the underground oil at the bottom of the pipeline. The sucker rod 1 includes: an upper connecting rod 11, a connecting rod 12 and a bottom rod 13. The upper connecting rod 11 has a lower end threadedly connected to the connecting rod 12, and the connecting rod 12 has an upper end threadedly connected to the bottom of the upper connecting rod 11, and a lower end threadedly connected to the top of the bottom rod 13. The outer wall is detachably installed with a connecting sleeve 31, and the bottom rod 13 has an upper end threadedly connected to the connecting rod 12, and the bottom sleeve 21 is squeezed and fixed between the bottom of the connecting rod 12 and the bottom of the bottom rod 13. The upper connecting rod 11, the connecting rod 12 and the bottom rod 13 can be assembled to facilitate the extraction of underground oil at different depths, and the limiting device 2 and the connecting assembly 3 can be connected;

[0051] The limiting device 2 can be detachably mounted on the lower end of the outer wall of the sucker rod 1. The limiting device 2 can contact the inner wall of the pipe, thereby limiting the lowering of the sucker rod 1 and guiding the bottom end of the sucker rod 1 to prevent the bottom rod 13 from deflecting when lowering, making it convenient to control the lowering of the sucker rod 1. The rubber ball 24 rotates and slides down to reduce friction with the sucker pipe, thereby preventing the sucker pipe from rupturing and the sucker rod 1 from colliding and breaking, thereby increasing the service life of the sucker rod 1 and the sucker pipe. The limiting device 2 includes: a bottom sleeve 21, a protrusion 22, a connecting block 23 and a rubber ball 24. The inner wall of the bottom sleeve 21 contacts the lower end of the outer wall of the sucker rod 1 and is squeezed at the connection at the lower end of the sucker rod 1. , a protrusion 22 is provided at the top of the bottom sleeve 21 and contacts the connection of the sucker rod 1, and can squeeze the bottom sleeve 21 at the connection of the lower end of the sucker rod 1 for fixation, a connecting block 23 is provided at both ends of the top and bottom of the bottom sleeve 21, and can connect the bottom sleeve 21, a rubber ball 24 is rotatably connected around the outer wall of the bottom sleeve 21, and contacts the inner wall of the pipe, and can limit and guide the lower end of the sucker rod 1, the bottom sleeve 21 is provided in two groups, and the two groups of bottom sleeves 21 are connected by the connecting block 23, so that they can be installed on the outer wall of the bottom rod 13, and the bottom rod 13 and the connecting rod 12 are threadedly connected, so that the bottom sleeve 21 is squeezed and fixed to the outer wall of the bottom rod 13, thereby increasing the installation stability;

[0052] The connecting assembly 3 is detachably mounted in the middle of the outer wall of the sucker rod 1. The anti-eccentric wear device 4 can be connected to the sucker rod 1 through the connecting assembly 3, and the anti-eccentric wear device 4 can be placed and operated. The connecting assembly 3 includes: a connecting sleeve 31, a mounting block 32, and an arcuate opening 33. The inner wall of the connecting sleeve 31 contacts the middle of the outer wall of the sucker rod 1, and the outer wall is connected to the anti-eccentric wear device 4 on all sides. The mounting block 32 is arranged at the top and bottom ends of the connecting sleeve 31 and can connect the connecting sleeve 31. The arcuate opening 33 is arranged on the inner side of the connecting sleeve 31 and contacts the middle of the outer wall of the sucker rod 1 and can clamp the sucker rod 1. The connecting sleeve 31 is provided in two groups, and the two groups of connecting sleeves 31 are connected by the mounting block 31.

[0053] The anti-eccentric wear device 4 is arranged around the outer wall of the connecting component 3. Through the anti-eccentric wear device 4 contacting the inner wall of the pipe, the lowering of the sucker rod 1 can be guided and limited, and the corresponding pipe diameter can be adjusted so that the rubber roller 45 contacts the inner wall of the pipe for sliding, thereby reducing friction, preventing the sucker pipe from breaking and preventing the sucker rod 1 from colliding and breaking, and increasing the service life of the sucker rod 1 and the sucker pipe. The eccentric wear device 4 includes: a rotation adjustment seat 41, a rotating rod 42, a groove 43, an adjustment plate 44, a rubber roller 45 and a limit rod 46. The rotation adjustment seat 41 is arranged around the outer wall of the connecting sleeve 31, and the interior is connected to the rotating rod 42 by an adjusting bolt, so that the rotation of the rotating rod 42 can be controlled and adjusted. The rotating rod 42 has its bottom end rotatably connected to the inside of the rotation adjustment seat 41, and the rotation tightness can be controlled by the adjusting bolt. The groove 43 is arranged at the upper end of the outer wall of the rotating rod 42 and can The limit rod 46 is installed with the limit rod 46, which is rotatably connected to the upper end of the rotating rod 42 and can adjust the tightness of the rotation by adjusting the bolt. The rubber roller 45 is rotatably connected to the inner periphery of the adjusting plate 44 and can contact the inner wall of the pipe. The limit rod 46 is rotatably connected to the upper periphery of the outer wall of the connecting sleeve 31 by rotating the adjusting seat 41 and can be inserted into the inner part of the groove 43 to limit the rotating rod 42. By rotating the adjusting bolt, the rotation angle of the rotating rod 42 and the adjusting plate 44 is adjusted, and then the adjusting bolt is tightened to fix the rotating rod 42 and the adjusting plate 44 so that the rubber roller 45 at the upper end of the adjusting plate 44 can just contact the inner wall of the oil pumping pipe. The limit rod 46 is then inserted into the groove 43 at the upper end of the outer wall of the rotating rod 42 to support the limit rod 46 to prevent the limit rod 46 from being subjected to a large force and rotating when lowering, resulting in the inability to limit.

[0054] During specific use, those skilled in the art will sleeve the two sets of connecting sleeves 31 on the outer wall of the connecting rod 12, overlap the two sets of mounting blocks 32, and then fix them with bolts, so that the connecting sleeve 31 together with the anti-eccentric wear device 4 is installed on the outer wall of the connecting rod 12, and then sleeve the two sets of bottom sleeves 21 with the same diameter as the pipe wall on the outer wall of the bottom rod 13, overlap the connecting blocks 23, and then fix them with bolts. At this time, the sucker rod 1 is assembled so that the upper end of the connecting rod 12 is threadedly connected to the bottom of the upper connecting rod 11, and the lower end is threadedly connected to the top of the bottom rod 13, so that the bottom of the connecting rod 12 is aligned with the convex block. 22 is squeezed, thereby squeezing the bottom sleeve 21 to the outer wall of the bottom rod 13, and the oil pumping operation is carried out at this time. The sucker rod 1 is placed in the oil pumping pipe and lowered, and the rubber ball 24 on the outer wall of the bottom rod 13 is brought into contact with the oil pumping pipe, and the sucker rod 1 is limited and slid, which is convenient for the operation of the sucker rod 1, and then continues to dive. At this time, the rubber roller 45 on the upper end of the adjustment plate 44 is in contact with the inner wall of the pipe, so that the sucker rod 1 can slide down smoothly and steadily, increase the control force of the sucker rod 1, reduce the friction of sliding, and increase the service life of the sucker rod 1 and the oil pumping pipe.

[0055] Although the present invention has been described above with reference to embodiments, various modifications may be made thereto and equivalent components may be substituted without departing from the scope of the present invention. In particular, as long as there are no structural conflicts, the various features of the embodiments disclosed herein may be combined with each other in any manner, and the omission of an exhaustive description of such combinations in this specification is solely for the sake of space and resource conservation. Therefore, 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 sucker rod anti-eccentric wear device, characterized by: Also includes: The limiting device is detachably mounted on the lower end of the outer wall of the sucker rod and contacts the inner wall of the pipe. It can limit the lowering of the sucker rod and guide the bottom end of the sucker rod. A connecting assembly is detachably mounted in the middle of the outer wall of the sucker rod and is capable of connecting the anti-eccentric wear device to the sucker rod; The anti-eccentric wear device is arranged around the outer wall of the connecting assembly and contacts the inner wall of the pipeline, and can guide and limit the lowering of the sucker rod; The connection component includes: The connecting sleeve has an inner wall that contacts the middle of the outer wall of the sucker rod, and the outer wall is connected to an anti-eccentric wear device on all sides; The connecting sleeve includes: Mounting blocks are provided at both ends of the top and bottom of the connecting sleeve and are capable of connecting the connecting sleeve; The arc mouth is arranged on the inner side of the connecting sleeve and contacts the middle of the outer wall of the sucker rod, and can clamp the sucker rod; The anti-eccentric wear device comprises: A rotary adjustment seat is arranged around the outer wall of the connecting sleeve and is internally connected to the rotary rod via an adjusting bolt; The bottom end of the rotating rod is rotatably connected to the inside of the rotating adjustment seat, and the rotation tightness can be controlled by adjusting the bolt; A groove is provided at the upper end of the outer wall of the rotating rod and can be mounted with the limiting rod; An adjustment plate is rotatably connected to the upper end of the rotating rod, and the tightness of the rotation can be adjusted by adjusting the bolt; The rubber roller is rotatably connected to the inner periphery of the adjusting plate and is capable of contacting the inner wall of the pipe; The anti-eccentric wear device also includes: The limiting rod is rotatably connected to the periphery of the upper end of the outer wall of the connecting sleeve through a rotating adjustment seat and can be inserted into the interior of the groove to limit the rotating rod.

2. The sucker rod anti-eccentric wear device according to claim 1, characterized in that: The limiting device includes: The bottom sleeve has an inner wall that contacts the lower end of the outer wall of the sucker rod and is squeezed at the connection of the lower end of the sucker rod; The convex block is arranged on the top of the bottom sleeve and contacts the connection of the sucker rod, and can squeeze the bottom sleeve to the connection of the lower end of the sucker rod to fix it.

3. The sucker rod anti-eccentric wear device according to claim 2, characterized in that: The bottom cover comprises: Connecting blocks are provided at both ends of the top and bottom of the bottom sleeve and are capable of connecting the bottom sleeve; The rubber ball is rotatably connected to the outer wall of the bottom sleeve and contacts the inner wall of the pipe, and can limit and guide the lower end of the sucker rod.

4. The sucker rod anti-eccentric wear device according to claim 3, characterized in that: The bottom sleeves are provided in two groups, and the two groups of bottom sleeves are connected by a connecting block.

5. The sucker rod anti-eccentric wear device according to claim 4, characterized in that: The connecting sleeves are provided in two groups, and the two groups of connecting sleeves are connected via a mounting block.

6. A sucker rod, characterized in that: The sucker rod anti-eccentric wear device according to any one of claims 1 to 5; the sucker rod comprises: an upper connecting rod, the lower end of which is threadedly connected to the connecting rod; A connecting rod, the upper end of which is threadedly connected to the bottom of the upper connecting rod, the lower end of which is threadedly connected to the top of the bottom rod, and the outer wall of which is detachably mounted with a connecting sleeve; The upper end of the bottom rod is threadedly connected to the connecting rod, and the bottom sleeve is squeezed and fixed between the bottom of the connecting rod and the bottom of the bottom rod.

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