CN118187701A - Wear-proof device for pump barrel of oil pump - Google Patents
Wear-proof device for pump barrel of oil pump Download PDFInfo
- Publication number
- CN118187701A CN118187701A CN202410300798.5A CN202410300798A CN118187701A CN 118187701 A CN118187701 A CN 118187701A CN 202410300798 A CN202410300798 A CN 202410300798A CN 118187701 A CN118187701 A CN 118187701A
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- Prior art keywords
- wear
- pump barrel
- oil
- sleeve
- pump
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- 230000002265 prevention Effects 0.000 claims description 17
- 239000003129 oil well Substances 0.000 claims description 6
- 239000012530 fluid Substances 0.000 claims 1
- 230000001681 protective effect Effects 0.000 abstract description 2
- 238000005299 abrasion Methods 0.000 description 23
- 230000009286 beneficial effect Effects 0.000 description 10
- 238000005086 pumping Methods 0.000 description 8
- 230000008878 coupling Effects 0.000 description 6
- 238000010168 coupling process Methods 0.000 description 6
- 238000005859 coupling reaction Methods 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 230000002093 peripheral effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 239000011148 porous material Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Details Of Reciprocating Pumps (AREA)
Abstract
The invention relates to the technical field of underground protective equipment, in particular to an oil pump cylinder wear-resistant device, which comprises an outer connecting pipe and an inner wear-resistant sleeve, wherein two ends of the outer connecting pipe are respectively provided with an oil pipe connecting structure used for being connected with the lower end of an oil pipe and a pump cylinder connecting structure used for being connected with the upper end of a pump cylinder; the centering wear-resistant function can be realized at the position close to the pump barrel and close to the middle of the first section of sucker rod, so that the first section of sucker rod is bent and then contacted with the inner wear-resistant sleeve, the pump barrel is not easy to wear, and the damage of an oil pump is avoided.
Description
Technical Field
The invention relates to the technical field of underground protective equipment, in particular to an oil pump barrel wear-resistant device.
Background
The oil well of land oil field is produced by pumping unit of tubular oil pump, the pump barrel of oil pump is connected with oil pipe, the plunger of oil pump is positioned in pump barrel and connected with oil pumping rod. The length of the sucker rod is very long, the whole sucker rod is formed by connecting one section of sucker rod, and two adjacent sections of sucker rods are connected through a coupling. During the downstroke of the oil pump, the sucker rod above the plunger is bent and not centered, and the sucker rod is contacted with the wall of the oil pipe to generate friction, so that the oil pipe is worn by bending the sucker rod. However, for the first section of sucker rod which is close to the plunger and the lower end of which is connected with the upper part of the plunger, the nearest anti-abrasion device is arranged at the joint of the upper end of the first section of sucker rod, the anti-abrasion device is separated from the plunger by a whole first section of sucker rod, the first section of sucker rod can bend, and the anti-abrasion device has limited righting effect on the first section of sucker rod, so that after the first section of sucker rod bends, the first section of sucker rod can contact with the pump barrel of the oil pump and generate friction along with the descending of the sucker rod, and the groove can be ground at the upper part of the pump barrel of the oil pump due to long-time friction, so that the oil pump is seriously lost, and even no liquid is discharged.
Disclosure of Invention
The invention aims to provide an anti-abrasion device for a pump barrel of an oil pump, which aims to solve the problem that a first section of sucker rod above a plunger of the existing oil pump is easy to abrade the pump barrel.
The technical scheme of the oil pump barrel wear-proof device of the invention is as follows:
The utility model provides an oil-well pump barrel wear prevention device, includes outer connecting pipe and interior wear prevention cover, and the both ends of outer connecting pipe are equipped with respectively and are used for the oil pipe connection structure that links to each other with the oil pipe lower extreme and are used for the pump barrel connection structure that links to each other with the pump barrel upper end, and interior wear prevention cover is located outer connecting pipe, is equipped with on the outer connecting pipe to interior wear prevention cover and carries out spacing structure in the direction towards pump barrel connection structure, and interior wear prevention cover has the wear prevention cover centre bore that supplies the first section sucker rod of oil pump plunger top to wear to establish.
The beneficial effects are that: through inserting the abrasionproof device in the junction of oil pipe and pump barrel, can make the interior abrasionproof cover of abrasionproof device be close to the pump barrel more to make interior abrasionproof cover can overlap to establish outside first section sucker rod, cooperation limit structure guarantees the position of interior abrasionproof cover, thereby can be in being close to the pump barrel position and lean on the position at middle part to first section sucker rod to realize the abrasionproof effect, make first section sucker rod crooked back contact with interior abrasionproof cover, and be difficult to wearing and tearing to the pump barrel, avoid the oil-well pump damage.
Further, the inner wear-resistant sleeve is movably arranged in the outer connecting pipe, and the limiting structure is a limiting surface arranged on the inner wall of the outer connecting pipe.
The beneficial effects are that: the inner wear-proof sleeve is movably arranged, so that the inner wear-proof sleeve is convenient to install and take out.
Further, the limit surface is a conical surface or a step surface facing away from the pump cylinder connecting structure.
The beneficial effects are that: the limiting surface is convenient to process on the inner wall of the outer connecting pipe, and the limiting is reliable.
Further, the outer connecting pipe comprises an oil pipe connector and a pump barrel connector which are arranged in a split mode, an oil pipe connecting structure is arranged on the oil pipe connector, and a pump barrel connecting structure is arranged on the pump barrel connector and fixedly connected with the oil pipe connector and the pump barrel connector.
The beneficial effects are that: utilize the oil pipe connector and the pump barrel connector of components of a whole that can function independently, the processing of connection structure of being convenient for.
Further, a diversion channel spirally extending around the central axis of the inner wear-resistant sleeve is arranged on the inner wear-resistant sleeve, and the diversion channel is provided with an inlet and an outlet which are oppositely arranged in the axial direction of the inner wear-resistant sleeve so that liquid can flow through the diversion channel to drive the inner wear-resistant sleeve to rotate.
The beneficial effects are that: the inner anti-abrasion sleeve is enabled to rotate under the action of liquid flow, so that uniform abrasion can be realized, and the service life is prolonged.
Further, the inner wear sleeve includes a main sleeve body and a wear liner disposed on an inner wall of the main sleeve body.
The beneficial effects are that: friction force can be reduced by friction fit between the wear-resistant lining and the sucker rod, and replacement is facilitated.
Further, the inner wall of the upper end and/or the inner wall of the lower end of the outer connecting pipe is a conical surface.
The beneficial effects are that: the upper end conical surface of the outer connecting pipe is convenient for the inner anti-abrasion sleeve to be put in, and the lower end conical surface is convenient for the plunger to be lifted out.
Further, the inner diameter of the central hole of the wear-resistant sleeve is smaller than the inner diameter of the pump barrel.
The beneficial effects are that: the inner wear-proof sleeve can be used for righting the first section of pumping rod above the plunger, reducing friction coefficient and being difficult to make the pumping rod contact with the pump barrel of the oil pump to wear the upper end of the pump barrel.
Further, the inner diameter of the central hole of the wear-resistant sleeve is smaller than the outer diameter of the upper end coupling of the first section of sucker rod.
The beneficial effects are that: the inner wear-resistant sleeve can be pushed by utilizing the coupling at the upper end of the first section of sucker rod, so that the position of the inner wear-resistant sleeve is guaranteed.
Further, the oil pipe connection structure and/or the pump barrel connection structure are/is a threaded connection.
The beneficial effects are that: the anti-wear device is convenient to access the oil pumping pipe column and convenient to maintain and replace.
Drawings
Fig. 1 is a schematic structural view of an embodiment 1 of a pump barrel wear protection device of an oil pump of the present invention;
FIG. 2 is a schematic view of the wear assembly of FIG. 1 in use;
FIG. 3 is a schematic structural view of an example 2 of the pump barrel wear assembly of the present invention;
FIG. 4 is a schematic view of the wear assembly of FIG. 3 in use;
in the figure: 1. an outer connection tube; 11. an oil pipe connector; 12. a pump cylinder connector; 2. a main sleeve body; 21. a diversion channel; 3. a wear-resistant lining; 4. an oil pipe; 5. coupling; 6. a first section of sucker rod; 7. a plunger; 8. a pump cylinder; 9. and (3) sealing rings.
Detailed Description
Embodiment 1 of the oil pump barrel wear prevention device of the invention:
In this embodiment, through inserting the abrasionproof device in the junction of oil pipe and pump barrel, can make the interior abrasionproof cover of abrasionproof device be close to the pump barrel more to make interior abrasionproof cover can overlap to establish outside first section sucker rod, thereby can be close to the pump barrel position and lean on the position of middle part to realize the abrasionproof effect to first section sucker rod, make first section sucker rod crooked back contact with interior abrasionproof cover, and be difficult to wearing and tearing to the pump barrel, avoid the oil-well pump damage.
Specifically, as shown in fig. 1 and 2, the oil pump barrel wear-proof device comprises an outer connecting pipe and an inner wear-proof sleeve, the inner wear-proof sleeve is arranged in the outer connecting pipe, the outer connecting pipe comprises an oil pipe connector 11 and a pump barrel connector 12 which are arranged in a split mode, and the inner wear-proof sleeve comprises a main sleeve body 2 and a wear-proof lining layer 3 arranged on the inner wall of the main sleeve body 2. The outer connecting pipe is connected between the oil pipe 4 and the pump cylinder 8 of the oil pump, and the lower end of the oil pumping rod passes through the inner anti-abrasion sleeve in the outer connecting pipe and is connected with the upper end of the plunger 7 of the oil pumping pump. The sucker rod is positioned in the oil pipe 4, the whole sucker rod is formed by connecting a plurality of sections of sucker rods together, and the section of sucker rod which is adjacent to the plunger 7 and is connected with the plunger 7 is the first section of sucker rod 6. The lower end of the first section of sucker rod 6 extends into the pump cylinder 8, the upper end of the first section of sucker rod is positioned outside the pump cylinder 8 and above the inner wear-resistant sleeve, and the inner wear-resistant sleeve can play a role in righting and preventing wear on the middle part of the first section of sucker rod.
The oil pipe connector 11 and the pump barrel connector 12 are both pipe bodies, the upper section of the inner hole of the oil pipe connector 11 is a conical hole section, the conical hole section has larger and larger hole diameter from bottom to top, and an upper connecting internal thread is arranged on the conical hole section and forms an oil pipe connecting structure. The inner diameter of the lower section of the inner hole of the oil pipe connector 11 is larger than that of the upper section, and the lower section of the inner hole of the oil pipe connector 11 is provided with lower connecting internal threads for connecting the pump barrel connector 12.
The upper end of the pump cylinder connector 12 is provided with an upper connecting external thread matched with a lower connecting internal thread of the oil pipe connector 11, so that the oil pipe connector 11 and the pump cylinder connector 12 are fixedly connected, and a sealing ring 9 is arranged at the joint. The upper orifice edge of the inner bore of the pump cylinder connector 12 is aligned with the lower orifice edge of the inner bore of the oil pipe connector 11, and the outer peripheral surface of the portion of the pump cylinder connector 12 located below the upper connecting external thread is aligned with the outer peripheral surface of the oil pipe connector 11. The pump barrel connector 12 inner hole comprises an upper taper hole section, a middle step hole section and a lower taper hole section, wherein the upper taper hole section has larger and larger pore diameter from bottom to top, so that the inner anti-abrasion sleeve is convenient to be put in, and the lower taper hole section has larger and larger pore diameter from top to bottom, so that the plunger 7 is convenient to be lifted out. The middle step hole section comprises an upper large hole section and a lower small hole section, and an upward step surface is formed at the joint of the large hole section and the small hole section. The inner holes of the oil pipe connector 11 and the pump barrel connector 12 jointly form a central hole of the outer connecting pipe, and the upward step surface forms a limiting surface which is arranged on the inner wall of the outer connecting pipe and used for limiting the inner wear-resistant sleeve. The lower end outer peripheral surface of the pump barrel connector 12 is provided with a lower connecting external thread, and the lower connecting external thread forms a pump barrel connecting structure for fixedly connecting with the upper end of the pump barrel 8.
The inner wear-resistant sleeve is movably arranged in the outer connecting pipe, the inner wear-resistant sleeve is seated on a limiting surface on the inner wall of the outer connecting pipe, and the limiting surface forms a limiting structure for limiting downward movement of the inner wear-resistant sleeve. The first section of sucker rod 6 above the plunger 7 is arranged in the center hole of the anti-abrasion sleeve of the inner anti-abrasion sleeve in a penetrating way. The wear-resistant lining layer 3 is an ultra-high molecular polyethylene lining tube, the outer wall of the lining tube is bonded with the main sleeve body 2, and the inner hole of the lining tube forms a central hole of the wear-resistant sleeve. The main sleeve body 2 of the inner wear-resistant sleeve is provided with guide channels 21 which spirally extend around the central axis of the inner wear-resistant sleeve, the guide channels 21 are holes which are formed in the main sleeve body 2 and spirally extend from bottom to top, the number of the guide channels 21 is six, each guide channel 21 is provided with an inlet and an outlet which are oppositely arranged in the axial direction of the inner wear-resistant sleeve, the inlet is positioned on the lower end face of the main sleeve body 2, the outlet is positioned on the upper end face of the main sleeve body 2, so that liquid can flow through the guide channels 21 to drive the inner wear-resistant sleeve to rotate, uniform wear can be realized, and the service life is prolonged.
The inner diameter of the central hole of the inner wear-proof sleeve is smaller than the inner diameter of the pump barrel 8, so that the inner wear-proof sleeve can play a role in righting the first section of sucker rod 6 above the plunger 7, reduce friction coefficient and not easily make the sucker rod contact with the pump barrel 8 of the oil pump to wear the upper end of the pump barrel 8. The inner diameter of the central hole of the wear-resistant sleeve is smaller than the outer diameter of the upper end joint hoop 5 of the first section of sucker rod 6, the inner diameter of the outer connecting pipe is larger than the outer diameter of the upper end joint hoop 5 of the first section of sucker rod 6, and the upper end joint hoop 5 of the first section of sucker rod 6 can be used for pushing the inner wear-resistant sleeve, so that the position of the inner wear-resistant sleeve is guaranteed. The outer diameter of the inner wear-resistant sleeve is smaller than the inner diameter of the oil pipe 4. The minimum inner diameter of the outer connecting tube is larger than the outer diameter of the plunger 7, so that the plunger 7 can conveniently be lowered into the pump barrel 8 through the outer connecting tube. Fig. 2 is intended to illustrate the relative relationship of the various components and is not intended to represent actual scale.
When the anti-abrasion device is used, the inner anti-abrasion sleeve is taken out, the outer connecting pipe is connected between the oil pipe 4 and the pump barrel 8 and enters the well along with the inner connecting pipe for setting depth, the inner anti-abrasion sleeve is sleeved on a first sucker rod at the upper part of the plunger 7 in a sliding manner, the plunger 7 and the inner anti-abrasion sleeve are lowered into the well by the sucker rod, the plunger 7 enters the pump barrel 8, the inner anti-abrasion sleeve is seated on an upward step surface on the inner wall of the outer connecting pipe, when the plunger 7 moves up and down for oil pumping, the inner anti-abrasion sleeve is seated on the upward step surface, the inner diameter of an inner anti-abrasion lining layer 3 is smaller than the inner diameter of the pump barrel 8, the first sucker rod above the plunger 7 is righted, the friction coefficient is reduced, the sucker rod is prevented from being contacted with the pump barrel 8 to wear the upper pump barrel 8, part of the pumped output liquid is discharged through the annular space of the sucker rod and the anti-abrasion lining layer 3, and the other part of the output liquid is spirally lifted and discharged through a diversion channel 21 of the inner anti-abrasion sleeve, the inner anti-abrasion sleeve is driven to rotate, so that the anti-abrasion lining layer 3 is uniformly abraded, and the service life is prolonged; during pump inspection operation, the sucker rod is started, and the plunger 7 drives the inner anti-abrasion sleeve to be lifted out together. The anti-wear device can prevent the rod body of the first sucker rod on the plunger 7 from being worn with the pump barrel 8 to cause serious leakage of the oil pump, and has simple structure and low cost.
Example 2 of the pump barrel wear protection device of the oil pump of the present invention:
As shown in fig. 3 and 4, the connection structure between the wear-resistant device and the oil pipe 4 and the pump barrel 8 and the positional relationship between the wear-resistant device and the first sucker rod 6, the coupling 5 and the plunger 7 are the same as those in embodiment 1, and the wear-resistant lining layer 3 of the wear-resistant device is the same as those in embodiment 1, and the difference between the wear-resistant lining layer and embodiment 1 is that: the outer connecting pipe in the embodiment 1 comprises an oil pipe connector and a pump barrel connector which are arranged in a split way, and the outer connecting pipe 1 in the embodiment is of an integrated structure; the limiting surface in the embodiment 1 is a step surface facing away from the pump barrel connecting structure, while the limiting surface in the embodiment is an inner conical surface, and the outer peripheral surface of the lower end part of the main sleeve body 2 of the corresponding inner wear-resistant sleeve is an outer conical surface matched with the inner conical surface; the inner wear sleeve in embodiment 1 is provided with a diversion channel, while the inner wear sleeve in this embodiment is not provided with a diversion channel.
Example 3 of the pump barrel wear protection device of the oil pump of the present invention:
The present embodiment provides a different arrangement form of the connection structure from embodiment 1, and the present embodiment is different from embodiment 1 in that the oil pipe connection structure and the pump cylinder connection structure in embodiment 1 are both screw connection structures. In this embodiment, the oil pipe connection structure and the pump cylinder connection structure are both welded connection structures.
Example 4 of the pump barrel wear protection device of the oil pump of the present invention:
The present embodiment provides an inner wear sleeve arrangement different from embodiment 1, and the difference between this embodiment and embodiment 1 is that the inner wear sleeve in embodiment 1 is movably disposed in the outer connecting pipe, and the limiting structure is a limiting surface disposed on an inner wall of the outer connecting pipe. In this embodiment, the inner wear sleeve is fixedly disposed within the outer connecting tube.
Example 5 of the wear protection device for the pump barrel of the oil pump in the invention:
This embodiment provides a different arrangement of the inner wear sleeve than embodiment 1, which differs from embodiment 1 in that the inner wear sleeve of embodiment 1 includes a main sleeve body and a wear liner disposed on an inner wall of the main sleeve body. In this embodiment, the inner wear-resistant sleeve is of an integral structure, and no wear-resistant lining is provided.
Example 6 of the wear protection device for the pump barrel of the oil pump in the invention:
The present embodiment provides an outer connection pipe arrangement form different from embodiment 1 in that the upper end inner wall and the lower end inner wall of the outer connection pipe in embodiment 1 are tapered surfaces. In this embodiment, the upper end portion and the lower end portion of the central hole of the outer connecting pipe are equal-diameter hole sections.
Example 7 of the pump barrel wear protection device of the oil pump of the present invention:
this embodiment provides a different inner wear sleeve arrangement than embodiment 1, which differs from embodiment 1 in that the inner diameter of the wear sleeve central bore in embodiment 1 is smaller than the inner diameter of the pump barrel. In this embodiment, the inner diameter of the central hole of the wear sleeve is equal to the inner diameter of the pump barrel.
Example 8 of the pump barrel wear protection device of the oil pump of the present invention:
This embodiment provides a different inner wear sleeve arrangement from embodiment 1, which differs from embodiment 1 in that the inner diameter of the wear sleeve central bore in embodiment 1 is smaller than the outer diameter of the upper end collar of the first section of sucker rod. In this embodiment, the inner diameter of the central hole of the wear-resistant sleeve is larger than the outer diameter of the coupling at the upper end of the first section of sucker rod.
It should be noted that the above-mentioned embodiments are merely preferred embodiments of the present invention, and the present invention is not limited to the above-mentioned embodiments, but may be modified without inventive effort or equivalent substitution of some of the technical features thereof by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides an oil-well pump barrel wear prevention device, its characterized in that, including outer connecting pipe and interior wear prevention cover, the both ends of outer connecting pipe are equipped with respectively and are used for the oil pipe connection structure that links to each other with the oil pipe lower extreme and are used for the pump barrel connection structure that links to each other with the pump barrel upper end, and interior wear prevention cover is located outer connecting pipe, is equipped with on the outer connecting pipe to interior wear prevention cover and carries out spacing structure in the direction towards pump barrel connection structure, and interior wear prevention cover has the wear prevention cover centre bore that supplies the first section sucker rod of oil pump plunger top to wear to establish.
2. The wear prevention device for the pump barrel of the oil pump according to claim 1, wherein the inner wear prevention sleeve is movably arranged in the outer connecting pipe, and the limiting structure is a limiting surface arranged on the inner wall of the outer connecting pipe.
3. The wear assembly of claim 2, wherein the stop surface is a conical surface or a stepped surface facing away from the barrel connection.
4. The wear prevention device for a pump barrel of an oil pump according to claim 1,2 or 3, wherein the outer connecting pipe comprises an oil pipe connector and a pump barrel connector which are arranged in a split mode, the oil pipe connecting structure is arranged on the oil pipe connector, the pump barrel connecting structure is arranged on the pump barrel connector, and the oil pipe connector is fixedly connected with the pump barrel connector.
5. A wear assembly in accordance with claim 1,2 or 3 wherein the inner wear sleeve is provided with a guide passage extending helically about a central axis of the inner wear sleeve, the guide passage having an inlet and an outlet disposed axially opposite the inner wear sleeve for fluid flow through the guide passage to rotate the inner wear sleeve.
6. A wear assembly in accordance with claim 1,2 or 3 wherein the inner wear sleeve comprises a main sleeve body and a wear liner disposed on an inner wall of the main sleeve body.
7. The wear prevention device for the pump barrel of the oil well pump according to claim 1,2 or 3, wherein the inner wall of the upper end and/or the inner wall of the lower end of the outer connecting pipe is a conical surface.
8. A wear assembly in accordance with claim 1, 2 or 3 wherein the inner diameter of the central bore of the wear sleeve is less than the inner diameter of the barrel.
9. The wear assembly of claim 1,2 or 3, wherein the inner diameter of the wear sleeve central bore is less than the outer diameter of the upper end collar of the first sucker rod.
10. A wear assembly in accordance with claim 1, 2 or 3 wherein the oil pipe connection and/or the pump barrel connection is a threaded connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410300798.5A CN118187701A (en) | 2024-03-15 | 2024-03-15 | Wear-proof device for pump barrel of oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410300798.5A CN118187701A (en) | 2024-03-15 | 2024-03-15 | Wear-proof device for pump barrel of oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118187701A true CN118187701A (en) | 2024-06-14 |
Family
ID=91399285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410300798.5A Pending CN118187701A (en) | 2024-03-15 | 2024-03-15 | Wear-proof device for pump barrel of oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118187701A (en) |
-
2024
- 2024-03-15 CN CN202410300798.5A patent/CN118187701A/en active Pending
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