CN219509794U - Hanging oil pump with valve group having forced return structure - Google Patents
Hanging oil pump with valve group having forced return structure Download PDFInfo
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- CN219509794U CN219509794U CN202222576295.XU CN202222576295U CN219509794U CN 219509794 U CN219509794 U CN 219509794U CN 202222576295 U CN202222576295 U CN 202222576295U CN 219509794 U CN219509794 U CN 219509794U
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Abstract
The utility model provides a valve group area forces suspension type oil-well pump of return structure, relates to oil-well pump technical field, including the pump barrel of vertical setting, the vertical plunger that is equipped with in the pump barrel, the installation ring channel has been seted up on the outer wall of plunger coaxially, from top to bottom coaxial parallel cover is equipped with a plurality of scraping ring in the installation ring channel, the outer wall of scraping ring offsets with the inner wall friction of pump barrel, the installation ring channel forms the collection sediment region through the region between the adjacent scraping ring, the upper and lower both sides edge that the scraping ring is close to the outer wall still coaxial respectively is equipped with the protruding section of scraping. The utility model solves the problems that sand grains exist in oil in the prior art, so that the sand grains can enter a gap between a pump cylinder and a plunger in the oil extraction process of an oil pump, and the phenomenon of pump clamping is easy to occur; and because the oil contains impurities, the dirt, wax and the like are easy to accumulate on the inner wall of the pump barrel in the process of adopting the oil pump, and the phenomenon of plunger clamping is easy to occur.
Description
Technical Field
The utility model relates to the technical field of oil pumps, in particular to a hanging type oil pump with a valve group having a forced return structure.
Background
Because the underground oil is viscous, the thick oil field needs to be injected with steam to dilute the oil and then can be extracted during exploitation, so that the auxiliary oil extraction by injecting steam is needed. After steam is injected, the blowout accident is easily caused by too high bottom hole pressure, and meanwhile, the traveling valve is easily subjected to air lock phenomenon in the oil pumping process due to the steam injection, so that oil cannot be extracted; the conventional whole barrel pump is adopted in the existing thickened oil steam injection well, and the oil well pump is put forward after the wellhead pressure is eliminated due to the fact that no blowout preventer is needed, gas injection is carried out on a lower gas injection pipe, so that the working procedures of the peripheral mode are multiple, the operation time is long, the cost is high, the workload is large, the economic benefit is poor, the problem that the movable valve group and the fixed valve group are difficult to close due to the fact that the viscosity of crude oil is high, and the pump efficiency is reduced even the valve group does not work is caused. Meanwhile, the hydrogen sulfide is severely corroded, and the method has become a difficult problem to be solved urgently.
One patent with publication number CN113374678A is disclosed in the prior art, which includes a pump cylinder, a plunger, a stationary valve, and a traveling valve; the pump cylinder is subjected to carbon-nitrogen-boron co-permeation treatment; the plunger comprises a coating, wherein the coating comprises a transition layer and a working layer from inside to outside; the fixed valve is provided with a forced resetting mechanism; the traveling valve comprises an upper traveling valve and a lower traveling valve which are connected in series on the plunger; the upper traveling valve is provided with a forced resetting mechanism, so that the forced resetting wear-resistant, corrosion-resistant and sulfur-resistant oil pump can well solve the problem of hydrogen sulfide corrosion and poor valve seat closing of a valve ball in thick oil thermal recovery, and provides powerful technical support for improving pump efficiency and saving operation cost.
The prior device gradually exposes the defects of the technology along with the use, and the prior device mainly comprises the following aspects:
first, because there are sand grains in the oil, this results in the oil-well pump in the oil recovery process, sand grains can get into the clearance between pump cylinder and the plunger, the phenomenon of card pump easily appears taking place.
Second, because the oil contains impurities, the inner wall of the pump barrel is easy to accumulate dirt, wax and the like in the process of adopting the oil pump, and the phenomenon of plunger clamping pump is also easy to be caused.
Thirdly, when the oil well pump is used in an inclined well, the valve ball returns slowly when being closed, so that the efficiency of the oil pump is reduced.
In summary, it is clear that the prior art has inconvenience and defects in practical use, so that improvement is needed.
Disclosure of Invention
Aiming at the defects in the prior art, the utility model solves the problems that sand grains exist in oil in the prior art, so that the sand grains can enter a gap between a pump cylinder and a plunger in the oil extraction process of an oil pump, and the phenomenon of pump clamping is easy to occur; and because the oil contains impurities, the dirt, wax and the like are easy to accumulate on the inner wall of the pump barrel in the process of adopting the oil pump, and the phenomenon of plunger clamping is easy to occur.
In order to solve the problems, the utility model provides the following technical scheme:
the utility model provides a valve group area forces suspension type oil-well pump of return structure, includes the pump barrel of vertical setting, the vertical plunger that is equipped with in the pump barrel, coaxial installation ring channel of having seted up on the outer wall of plunger, the coaxial parallel cover is equipped with a plurality of sand scraping ring from top to bottom in the installation ring channel, the outer wall of sand scraping ring with the inner wall friction of pump barrel offsets, the installation ring channel is through adjacent regional formation sediment region between the sand scraping ring, the upper and lower both sides edge that the sand scraping ring is close to the outer wall still is coaxial respectively to be equipped with the sand scraping protruding section.
As an optimized scheme, the shaft section of the sand scraping protruding section is arranged in a right triangle, the right-angle bottom edge section of the sand scraping protruding section is connected with the sand scraping ring, and the right-angle side edge section of the sand scraping protruding section is in friction and offset with the inner wall of the pump cylinder.
As an optimized scheme, clamping ring grooves are coaxially formed in the mounting ring grooves corresponding to the sand scraping rings, and the inner rings of the sand scraping rings are clamped in the clamping ring grooves.
As an optimized scheme, the lower end part of the plunger is connected with a downstream valve, and the upper end part of the plunger is connected with an upstream valve.
As an optimized scheme, the lower end part of the pump cylinder is connected with a fixed valve.
As an optimized scheme, the upper traveling valve, the lower traveling valve and the fixed valve all comprise valve bodies, valve balls are arranged in the valve bodies in a vertical sliding mode, a top cover is arranged at the upper end of each valve body, and a forced return structure is arranged between the top cover and each valve ball.
As an optimized solution, the forced return structure comprises a compression spring positioned between the top cover and the valve ball.
As an optimized scheme, the lower end part of the pressure spring is provided with a pressing seat, the lower surface of the pressing seat is in friction and offset with the peripheral wall of the valve ball, and the lower surface of the pressing seat is provided with an arc-shaped surface matched with the peripheral wall of the valve ball.
As an optimized scheme, positioning convex parts are fixedly connected between the upper end part of the pressing seat and the lower surface of the top cover respectively, and two ends of the pressure spring are correspondingly sleeved on the positioning convex parts.
As an optimized scheme, an outer tube is coaxially sleeved outside the pump cylinder, and an upper coupling is fixedly connected between the upper end part of the pump cylinder and the outer tube.
As an optimized scheme, the upper end part of the upstream traveling valve is connected with a sucker rod.
Compared with the prior art, the utility model has the beneficial effects that:
by arranging the sand scraping ring on the outer wall of the plunger, impurities such as dirt, wax and the like adhered on the inner wall of the pump cylinder are scraped by the sand scraping ring in the up-and-down reciprocating movement process of the plunger, the scaling phenomenon of the inner wall of the pump cylinder is effectively reduced, and the up-and-down sliding stability of the plunger is ensured;
the plunger is provided with the annular groove, and a slag collecting area is formed through an area between adjacent sand scraping rings, so that scraped impurities are collected into the slag collecting area;
through the scraping raised section of the scraping ring, the shaft section of the scraping raised section is arranged in a right triangle, dirt adhered to the inner wall of the pump cylinder can be scraped by utilizing the tip, and the dirt is guided into a slag collecting area by utilizing the inclined plane for collection;
by arranging the forced return structures in the valve bodies, the valve ball can be accurately and rapidly closed and sealed under the action of the elasticity of the pressure spring when the valve is used in an inclined shaft scene, so that the problems of lagging and difficult sealing of the valve ball of the inclined shaft are solved, and the pump efficiency and the service life of the pump are remarkably improved;
because of the arrangement of the forced return structure, the oil well pump can be used for various inclined wells with inclination of less than 60 degrees;
the oil pump adopts a suspension type structure, the pump barrel and the plunger are suspended in the outer tube, the outer tube is only fixedly connected, external extrusion, impact and the like are acted on the outer tube, so that the internal pump barrel is protected, the stress deformation of the pump barrel is avoided, the service life of the pump barrel is prolonged, the occurrence of pump clamping is reduced, and the pump efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. Like elements or portions are generally identified by like reference numerals throughout the several figures. In the drawings, elements or portions thereof are not necessarily drawn to scale.
FIG. 1 is a schematic diagram of the structure of the present utility model;
fig. 2 is a schematic structural view of the scraping raised section of the present utility model.
In the figure: 1-a pump cylinder; 2-a plunger; 3-installing an annular groove; 4-a sand scraping ring; 5-a slag collecting area; 6-scraping the sand protruding section; 7-clamping ring grooves; 8-an up-traveling valve; 9-a downstream traveling valve; 10-a fixed valve; 11-an outer tube; 12-coupling; 13-sucker rod; 14-valve ball; 15-pressing a seat; 16-compression spring.
Detailed Description
Embodiments of the technical scheme of the present utility model will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and thus are merely examples, and are not intended to limit the scope of the present utility model.
As shown in fig. 1 and 2, the hanging oil pump with the valve group forced return structure comprises a pump cylinder 1 which is vertically arranged, a plunger 2 is vertically arranged in the pump cylinder 1, an installation annular groove 3 is coaxially arranged on the outer wall of the plunger 2, a plurality of sand scraping rings 4 are coaxially sleeved in parallel from top to bottom in the installation annular groove 3, the outer wall of the sand scraping rings 4 are in friction contact with the inner wall of the pump cylinder 1, the installation annular groove 3 forms a slag collecting area 5 through an area between the adjacent sand scraping rings 4, and sand scraping convex sections 6 are coaxially arranged on the upper edge and the lower edge of the sand scraping rings 4 close to the outer wall respectively.
The scraping ring 4 and the scraping convex section 6 are integrally formed, and are made of nonmetallic high polymer materials, so that the scraping ring has the characteristics of wear resistance and high temperature resistance, and the highest temperature is 150 degrees.
The shaft section of the sand scraping convex section 6 is arranged in a right triangle, the right-angle bottom edge section of the sand scraping convex section 6 is connected with the sand scraping ring 4, and the right-angle side edge section of the sand scraping convex section 6 is in friction and offset with the inner wall of the pump cylinder 1.
A clamping ring groove 7 is coaxially arranged in the installation ring groove 3 corresponding to each sand scraping ring 4, and the inner ring of the sand scraping ring 4 is clamped in the clamping ring groove 7.
The lower end of the plunger 2 is connected with a downstream valve 9, and the upper end of the plunger 2 is connected with an upstream valve 8.
A fixed valve 10 is connected to the lower end of the pump cylinder 1.
The upper traveling valve 8, the lower traveling valve 9 and the fixed valve 10 all comprise valve bodies, valve balls 14 are arranged in the valve bodies in a vertical sliding mode, top covers are arranged at the upper ends of the valve bodies, and a forced return structure is arranged between the top covers and the valve balls 14.
The positive return feature includes a compression spring 16 located between the cap and the valve ball 14.
The lower end of the pressure spring 16 is provided with a pressing seat 15, the lower surface of the pressing seat 15 is in friction contact with the peripheral wall of the valve ball 14, and the lower surface of the pressing seat 15 is provided with an arc-shaped surface matched with the peripheral wall of the valve ball 14.
Positioning protruding parts are fixedly connected between the upper end part of the pressing seat 15 and the lower surface of the top cover respectively, and two ends of the pressure spring 16 are correspondingly sleeved on the positioning protruding parts.
An outer tube 11 is coaxially sleeved outside the pump cylinder 1, and an upper coupling 12 is fixedly connected between the upper end part of the pump cylinder 1 and the outer tube 11.
The upper end of the upper traveling valve 8 is connected with a sucker rod 13.
The working principle of the device is as follows:
by arranging the sand scraping ring 4 on the outer wall of the plunger 2, the dirt, wax and other impurities adhered on the inner wall of the pump cylinder 1 can be scraped by the sand scraping ring 4 in the up-and-down reciprocating movement process of the plunger 2, the scaling phenomenon on the inner wall of the pump cylinder 1 is effectively reduced, and the up-and-down sliding stability of the plunger 2 is ensured;
the plunger 2 is provided with the annular groove 3, and a slag collecting area 5 is formed through the area between the adjacent sand scraping rings 4, so that the scraped impurities are collected into the slag collecting area 5;
through the scraping convex sections 6 of the scraping ring 4, the shaft sections of the scraping convex sections 6 are arranged in a right triangle, dirt adhered to the inner wall of the pump cylinder 1 can be scraped by utilizing the tip, and the dirt is guided into the slag collecting area 5 by utilizing the inclined plane for collection;
by arranging the forced return structures in the valve bodies, the valve ball 14 can be closed accurately and rapidly under the elastic force of the pressure spring 16 when the valve is used in an inclined shaft scene, so that the problems of lagging return seat of the valve ball 14 of the inclined shaft and difficult seat sealing are solved, and the pump efficiency and the service life of the pump are remarkably improved;
because of the arrangement of the forced return structure, the oil well pump can be used for various inclined wells with inclination of less than 60 degrees;
the oil pump adopts a suspension type structure, the pump cylinder 1 and the plunger 2 are suspended in the outer tube 11 and are fixedly connected only by the outer tube 11, and external extrusion, impact and the like are acted on the outer tube 11, so that the internal pump cylinder 1 is protected, the forced deformation of the pump cylinder 1 is avoided, the service life of the pump cylinder 1 is prolonged, the occurrence of pump clamping is reduced, and the pump efficiency is improved.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model, and are intended to be included within the scope of the appended claims and description.
Claims (10)
1. A valve group takes suspension type oil-well pump of forced return structure which characterized in that: including the pump cylinder (1) of vertical setting, the vertical plunger (2) that is equipped with in pump cylinder (1), installation ring channel (3) have been seted up on the outer wall of plunger (2) coaxially, install in ring channel (3) by last coaxial parallel cover down be equipped with a plurality of scrape sand ring (4), scrape sand ring (4) the outer wall with the inner wall friction of pump cylinder (1) offsets, install ring channel (3) are through adjacent scrape regional formation sediment region (5) between sand ring (4), scrape sand ring (4) and be close to the upper and lower both sides edge of outer wall and still coaxial be equipped with respectively and scrape sand protruding section (6).
2. The hanging oil-well pump with valve group forced return structure according to claim 1, wherein: the axial cross section of the sand scraping protruding section (6) is arranged in a right triangle, the right-angle bottom edge section of the sand scraping protruding section (6) is connected with the sand scraping ring (4), and the right-angle side edge section of the sand scraping protruding section (6) is in friction and offset with the inner wall of the pump cylinder (1).
3. The hanging oil-well pump with valve group forced return structure according to claim 2, characterized in that: and a clamping ring groove (7) is coaxially arranged in the mounting ring groove (3) corresponding to each sand scraping ring (4), and the inner ring of the sand scraping ring (4) is clamped in the clamping ring groove (7).
4. The hanging oil-well pump with valve group forced return structure according to claim 1, wherein: the lower end part of the plunger (2) is connected with a downstream valve (9), and the upper end part of the plunger (2) is connected with an upstream valve (8).
5. The hanging oil-well pump with valve group forced return structure according to claim 4, wherein: the lower end part of the pump cylinder (1) is connected with a fixed valve (10).
6. The suspended oil pump with valve block with forced return structure according to claim 5, wherein: the upper traveling valve (8), the lower traveling valve (9) and the fixed valve (10) comprise valve bodies, valve balls (14) are arranged in the valve bodies in a vertical sliding mode, a top cover is arranged at the upper end of each valve body, and a forced return structure is arranged between each top cover and each valve ball (14).
7. The hanging oil-well pump with valve group forced return structure according to claim 6, wherein: the positive return structure comprises a compression spring (16) located between the top cover and the valve ball (14).
8. The suspended oil pump with valve block with forced return structure as claimed in claim 7, wherein: the lower end part of the pressure spring (16) is provided with a pressure seat (15), the lower surface of the pressure seat (15) is in friction and offset with the peripheral wall of the valve ball (14), and the lower surface of the pressure seat (15) is provided with an arc-shaped surface matched with the peripheral wall of the valve ball (14).
9. The hanging oil-well pump with valve group forced return structure according to claim 8, wherein: positioning protruding portions are fixedly connected between the upper end portion of the pressing seat (15) and the lower surface of the top cover respectively, and two ends of the pressure spring (16) are correspondingly sleeved on the positioning protruding portions.
10. The hanging oil-well pump with valve group forced return structure according to claim 1, wherein: an outer tube (11) is coaxially sleeved outside the pump cylinder (1), and an upper coupling (12) is fixedly connected between the upper end part of the pump cylinder (1) and the outer tube (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222576295.XU CN219509794U (en) | 2022-09-28 | 2022-09-28 | Hanging oil pump with valve group having forced return structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222576295.XU CN219509794U (en) | 2022-09-28 | 2022-09-28 | Hanging oil pump with valve group having forced return structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219509794U true CN219509794U (en) | 2023-08-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222576295.XU Active CN219509794U (en) | 2022-09-28 | 2022-09-28 | Hanging oil pump with valve group having forced return structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219509794U (en) |
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2022
- 2022-09-28 CN CN202222576295.XU patent/CN219509794U/en active Active
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