CN112324651A - Inclined shaft oil well pump and standing valve assembly thereof - Google Patents
Inclined shaft oil well pump and standing valve assembly thereof Download PDFInfo
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- CN112324651A CN112324651A CN202011203325.1A CN202011203325A CN112324651A CN 112324651 A CN112324651 A CN 112324651A CN 202011203325 A CN202011203325 A CN 202011203325A CN 112324651 A CN112324651 A CN 112324651A
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- guide
- guide rod
- fixed
- fixed valve
- valve assembly
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
- F04B53/1002—Ball valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B47/00—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
- F04B53/1002—Ball valves
- F04B53/1007—Ball valves having means for guiding the closure member
Abstract
The invention relates to an inclined shaft oil well pump and a fixed valve assembly thereof. Standing valve assembly of inclined shaft oil-well pump includes: the fixed valve cover is internally provided with a guide plate, and the guide plate is provided with a guide hole; the fixed valve seat is arranged in the fixed valve cover and is provided with a valve port; the fixed valve ball is seated at the valve port of the fixed valve seat; the guide rod is positioned above the fixed valve ball and is assembled in the guide hole of the fixed valve cover in a guiding way; the fixed pressure spring is sleeved on the guide rod and used for applying an elastic acting force towards the fixed valve ball to the guide rod so as to enable the lower end of the guide rod to be pressed against the fixed valve ball; the guide rod is provided with a guide section, the guide rod is assembled in the guide hole in a guide mode through the guide section, the guide section is provided with a guide notch, the guide notch extends along the axial direction of the guide rod, a step structure is formed at the lower portion of the guide notch, and the step surface of the step structure is used for being matched with the guide plate in a blocking mode so as to prevent the fixed pressure spring from being compressed excessively.
Description
Technical Field
The invention relates to an inclined shaft oil well pump and a fixed valve assembly thereof.
Background
With the continuous deepening of oil field development, the inclined wells with large inclination of the oil field are more and more. The conventional oil well pump is easy to cause untimely opening and closing of the valve ball in the oil well, so that the pumping efficiency of the oil well pump is low, and the oil well can not normally produce.
The Chinese utility model patent with the granted publication number of CN205605396U discloses an oil-well pump for inclined shaft, which comprises a pump barrel, wherein the lower end of the pump barrel is connected with a fixed valve assembly through a lower coupling, the fixed valve assembly comprises a fixed valve cover, the upper end of the fixed valve cover is in threaded connection with the lower coupling, a fixed valve seat is arranged in the fixed valve cover, a fixed valve ball is arranged on the fixed valve seat, a fixed valve ball guide rod is arranged above the fixed valve ball, a guide plate is arranged in the fixed valve cover, the guide plate is provided with a guide hole and a through-flow hole, the guide hole is arranged at the central position of the guide plate, and a plurality of through-flow holes are arranged around the guide hole; the fixed valve ball guide rod is assembled in the guide hole of the fixed valve cover in a sliding mode, and the fixed valve ball guide rod is sleeved with the fixed pressure spring, so that the fixed valve ball can be timely seated on the valve port of the fixed valve seat under the elastic acting force of the fixed pressure spring, and the oil pumping efficiency of the oil well pump is improved.
However, the spring sleeved on the fixed valve ball guide rod is easy to excessively compress when the oil well pump is in an upstroke, so that the fatigue failure of the spring is caused, and the service life is influenced.
Disclosure of Invention
The invention aims to provide a fixed valve assembly of an inclined shaft oil well pump, which aims to solve the technical problem that the spring is easily over-compressed when the oil well pump is in an upstroke in the prior art, so that the spring is fatigue-failed; the invention also aims to provide an inclined-well oil pump to solve the technical problem that the spring is easily over-compressed when the oil pump is in an upstroke in the prior art, so that the spring is fatigue-failed.
In order to achieve the purpose, the technical scheme of the fixed valve assembly of the inclined shaft oil well pump is as follows:
standing valve assembly of inclined shaft oil-well pump includes:
the fixed valve cover is internally provided with a guide plate, and the guide plate is provided with a guide hole;
the fixed valve seat is arranged in the fixed valve cover and is provided with a valve port;
the fixed valve ball is seated at the valve port of the fixed valve seat;
the guide rod is positioned above the fixed valve ball and is assembled in the guide hole of the fixed valve cover in a guiding way;
the fixed pressure spring is sleeved on the guide rod and used for applying an elastic acting force towards the fixed valve ball to the guide rod so as to enable the lower end of the guide rod to be pressed against the fixed valve ball;
the guide rod comprises a large-diameter section and a small-diameter section, an annular step structure is formed at the connecting position of the large-diameter section and the small-diameter section, the guide rod is assembled in the guide hole through the small-diameter section in a guide mode, and the step surface of the annular step structure is used for being matched with the guide plate in a stop mode so as to prevent the fixed compression spring from being excessively compressed;
or the guide rod is provided with a guide section, the guide rod is assembled in the guide hole in a guide mode through the guide section, the guide section is provided with a guide notch, the guide notch extends along the axial direction of the guide rod, the lower portion of the guide notch forms a step structure, and the step surface of the step structure is in stop fit with the guide plate to prevent the fixed compression spring from being excessively compressed.
The beneficial effects are that: during the up stroke, the fixed valve ball moves upwards under the pressure of oil, the guide rod moves upwards and compresses the fixed pressure spring, and the fixed pressure spring stores energy in the compression process; when the step surface on the guide rod is in stop fit with the guide plate, the guide rod does not move upwards any more, namely the fixed pressure spring is not compressed any more, so that the fixed pressure spring is prevented from being compressed excessively, and the service life of the fixed pressure spring is prolonged; during the down stroke, the fixed valve ball can timely move downwards under the action of the fixed pressure spring to seat the valve port of the fixed valve seat, and the oil pumping efficiency of the oil well pump is improved.
Further, when the guide rod is provided with a guide notch, the guide notch is a guide groove, and the lower side groove wall of the guide groove forms a step surface of the step structure.
The beneficial effects are that: the guidance quality and the stability of guide way when the direction are better, can reduce the probability that the guide bar appears the jamming.
Furthermore, the upper side groove wall of the guide groove is of an opening structure.
The beneficial effects are that: the design is favorable for the guide rod to be assembled in the guide hole from the lower part of the guide plate in a guiding way.
Further, the cross section of the guide groove is fan-shaped.
Furthermore, the guide gap has at least two along the circumference interval equipartition of guide bar.
The beneficial effects are that: the uniformity and the stability of the stress of the guide rod in the sliding process are ensured.
Furthermore, the lower end face of the guide rod is a plane, a centering rib is arranged in the fixed valve cover, and the centering rib is used for centering the fixed valve ball when the fixed valve ball moves in a reciprocating manner so as to enable the fixed valve ball to move in a straight line.
The beneficial effects are that: the design avoids the clamping stagnation problem caused by the deflection of the fixed valve ball.
Furthermore, a flange plate is arranged at the lower end of the guide rod, the lower end of the fixed pressure spring is pressed against the flange plate, and the upper end of the fixed pressure spring is pressed against the guide plate.
The beneficial effects are that: the fixed compression spring is convenient to be sleeved on the guide rod.
In order to achieve the purpose, the technical scheme of the inclined-well oil pump is as follows:
the inclined well oil well pump comprises a pump cylinder, wherein a plunger and a traveling valve assembly are arranged in the pump cylinder, and the lower end of the pump cylinder is connected with a fixed valve assembly;
the standing valve assembly comprising:
the fixed valve cover is internally provided with a guide plate, and the guide plate is provided with a guide hole;
the fixed valve seat is arranged in the fixed valve cover and is provided with a valve port;
the fixed valve ball is seated at the valve port of the fixed valve seat;
the guide rod is positioned above the fixed valve ball and is assembled in the guide hole of the fixed valve cover in a guiding way;
the fixed pressure spring is sleeved on the guide rod and used for applying an elastic acting force towards the fixed valve ball to the guide rod so as to enable the lower end of the guide rod to be pressed against the fixed valve ball;
the guide rod comprises a large-diameter section and a small-diameter section, an annular step structure is formed at the connecting position of the large-diameter section and the small-diameter section, the guide rod is assembled in the guide hole through the small-diameter section in a guide mode, and the step surface of the annular step structure is used for being matched with the guide plate in a stop mode so as to prevent the fixed compression spring from being excessively compressed;
or the guide rod is provided with a guide section, the guide rod is assembled in the guide hole in a guide mode through the guide section, the guide section is provided with a guide notch, the guide notch extends along the axial direction of the guide rod, the lower portion of the guide notch forms a step structure, and the step surface of the step structure is in stop fit with the guide plate to prevent the fixed compression spring from being excessively compressed.
The beneficial effects are that: during the up stroke, the fixed valve ball moves upwards under the pressure of oil, the guide rod moves upwards and compresses the fixed pressure spring, and the fixed pressure spring stores energy in the compression process; when the step surface on the guide rod is in stop fit with the guide plate, the guide rod does not move upwards any more, namely the fixed pressure spring is not compressed any more, so that the fixed pressure spring is prevented from being compressed excessively, and the service life of the fixed pressure spring is prolonged; during the down stroke, the fixed valve ball can timely move downwards under the action of the fixed pressure spring to seat the valve port of the fixed valve seat, and the oil pumping efficiency of the oil well pump is improved.
Further, when the guide rod is provided with a guide notch, the guide notch is a guide groove, and the lower side groove wall of the guide groove forms a step surface of the step structure.
The beneficial effects are that: the guidance quality and the stability of guide way when the direction are better, can reduce the probability that the guide bar appears the jamming.
Furthermore, the upper side groove wall of the guide groove is of an opening structure.
The beneficial effects are that: the design is favorable for the guide rod to be assembled in the guide hole from the lower part of the guide plate in a guiding way.
Further, the cross section of the guide groove is fan-shaped.
Furthermore, the guide gap has at least two along the circumference interval equipartition of guide bar.
The beneficial effects are that: the uniformity and the stability of the stress of the guide rod in the sliding process are ensured.
Furthermore, the lower end face of the guide rod is a plane, a centering rib is arranged in the fixed valve cover, and the centering rib is used for centering the fixed valve ball when the fixed valve ball moves in a reciprocating manner so as to enable the fixed valve ball to move in a straight line.
The beneficial effects are that: the design avoids the clamping stagnation problem caused by the deflection of the fixed valve ball.
Furthermore, a flange plate is arranged at the lower end of the guide rod, the lower end of the fixed pressure spring is pressed against the flange plate, and the upper end of the fixed pressure spring is pressed against the guide plate.
The beneficial effects are that: the fixed compression spring is convenient to be sleeved on the guide rod.
Furthermore, the lower part of the traveling valve assembly is provided with an impact part, and the impact part is used for impacting the guide rod when the fixed valve ball is clamped to release clamping stagnation.
The beneficial effects are that: by the design, even if the fixed valve ball is blocked in the reciprocating motion process, the blocking problem of the fixed valve ball can be timely eliminated, and the smooth work of the inclined shaft oil well pump is ensured.
Furthermore, the lower part of the traveling valve assembly is provided with a pressing cap, the upper end and the lower end of the pressing cap are both of an opening structure, the inner diameter of the pressing cap is smaller than the outer diameter of the upper part of the guide rod, so that the pressing cap impacts the upper end surface of the guide rod through the lower end surface of the pressing cap when the fixed valve ball is clamped, and the pressing cap forms the impact part.
The beneficial effects are that: this striking portion simple structure not only can realize the striking to the guide bar, has better flow capacity moreover, guarantees that fluid can the efficient enter into the valve bonnet that moves about.
Drawings
Fig. 1 is a schematic structural diagram of an inclined-well oil pump according to embodiment 1 of the present invention;
FIG. 2 is a schematic structural view of the standing valve assembly of FIG. 1;
FIG. 3 is a cross-sectional view taken at A-A of FIG. 2;
FIG. 4 is a schematic view of the guide bar of FIG. 2;
FIG. 5 is a top view of FIG. 4;
in the figure: 1-upper joint; 2-a pump cylinder; 3-an oil outlet valve; 4-a plunger; 5-a floating valve cover; 6-a floating valve ball; 7-a floating valve seat; 8-pressing a cap; 9-coupling; 10-a guide bar; 11-fixing the valve cover; 12-fixing a pressure spring; 13-fixed valve ball; 14-a fixed valve seat; 15-lower joint; 16-a floating pressure spring; 17-a through-flow aperture; 18-a guide plate; 19-a guide groove; 20-a guide projection; 21-a guide section; 22-step surface; 23-a flange plate; 24-strengthening the muscle.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element. Furthermore, the terms "upper" and "lower" are based on the orientation and positional relationship shown in the drawings and are only for convenience of description of the present invention, and do not indicate that the referred device or component must have a specific orientation, and thus, should not be construed as limiting the present invention.
The features and properties of the present invention are described in further detail below with reference to examples.
as shown in fig. 1, the inclined-well oil pump comprises a pump cylinder 2, the upper end of the pump cylinder 2 is connected with an upper joint 1 through threads, and the upper joint 1 is used for connecting a sucker rod; the oil outlet valve 3, the plunger 4 and the traveling valve assembly are sequentially arranged in the pump barrel 2 from top to bottom, the upper end of the plunger 4 is in threaded connection with the lower end of the oil outlet valve 3, the lower end of the plunger 4 is in threaded connection with the traveling valve assembly, and under the action of external force, the oil outlet valve 3, the plunger 4 and the traveling valve assembly move in the pump barrel 2 in a reciprocating mode along the axial direction of the pump barrel 2 together so that crude oil in the stratum can be pumped out.
In this embodiment, the traveling valve assembly includes a traveling valve cover 5, the upper end of the traveling valve cover 5 is in threaded connection with the lower end of the plunger 4, a stop protrusion is arranged on the inner wall of the lower end of the traveling valve cover 5, the stop protrusion is of an annular structure, the traveling valve cover 5 is in threaded connection with a pressing cap 8 below the stop protrusion, the pressing cap 8 is of a hollow structure, a traveling valve seat 7 is arranged between the pressing cap 8 and the stop protrusion, and when the pressing cap is screwed on the traveling valve cover 5, the traveling valve seat 7 is limited between the pressing cap 8 and the stop protrusion. Wherein, the floating valve seat 7 is provided with a valve port for the outflow of oil.
In the embodiment, a floating valve ball 6 is arranged above the floating valve seat 7, and the floating valve ball 6 is used for being seated at a valve port of the floating valve seat 7; the inner diameter of the stop bulge is smaller than that of the moving valve seat 7 so as to avoid the moving valve ball 6, and the interference between the moving valve ball 6 and the moving valve ball 6 when the moving valve ball 6 is seated at the valve port of the moving valve seat 7 is avoided, so that the moving valve ball 6 cannot be in good sealing fit with the valve port.
In this embodiment, a traveling pressure spring 16 is disposed above the traveling valve ball 6, an upper end of the traveling pressure spring 16 is pressed against the traveling valve cover 5, a lower end of the traveling pressure spring 16 is pressed against the traveling valve ball 6, and the traveling pressure spring 16 is configured to apply an elastic acting force to the traveling valve ball 6 toward the traveling valve seat 7, so that the traveling valve ball 6 can be quickly seated at a valve port of the traveling valve seat 7 during an up stroke of the inclined-well oil pump. In other embodiments, a limiting cylinder can be arranged in the moving valve cover, the limiting cylinder is communicated up and down, the upper end of the limiting cylinder is connected to the moving valve cover, the upper portion of the moving pressure spring is sleeved on the limiting cylinder, the moving valve ball is limited by the lower end of the limiting cylinder when moving upwards, the moving pressure spring is prevented from being compressed in a transition mode, and the limiting cylinder can also limit the upper portion of the moving pressure spring in a radial direction, so that the stability of the moving pressure spring in the stretching process is guaranteed.
Wherein, the floating valve cover 5 is also provided with a communication hole above the floating valve ball 6, and oil liquid below the floating valve ball 6 enters the cavity of the plunger 4 through the communication hole.
As shown in fig. 1 and 2, the lower end of the pump cylinder 2 is connected with a fixed valve assembly through a coupling 9; specifically, the upper end and the lower end of the coupling 9 are both provided with internal threads, the lower end of the pump cylinder 2 is provided with external threads, and the lower end of the pump cylinder 2 is in threaded connection with the upper end of the coupling 9; the standing valve assembly has external threads and is threadedly connected to the lower end of the collar 9.
As shown in fig. 2, the fixed valve assembly includes a fixed valve cover 11, the fixed valve cover 11 is in threaded connection with the lower end of the coupling 9, a stop protrusion is arranged on the inner wall of the lower end of the fixed valve cover 11, the stop protrusion is annular, the fixed valve cover 11 is in threaded connection with a lower joint 15 below the stop protrusion, the lower joint 15 is hollow, a fixed valve seat 14 is arranged between the lower joint 15 and the stop protrusion, and when the lower joint 15 is screwed on the fixed valve cover 11, the fixed valve seat 14 is limited between the lower joint 15 and the stop protrusion. The fixed valve seat 14 has a valve port through which oil flows.
In this embodiment, a fixed valve ball 13 is disposed above the fixed valve cover 11, and the fixed valve ball 13 is configured to seat at a valve port of the fixed valve seat 14; the inner diameter of the stop protrusion is smaller than the inner diameter of the fixed valve seat 14 to avoid the fixed valve ball 13, so that the fixed valve ball 13 is prevented from interfering with the fixed valve ball 13 when the fixed valve ball 13 is seated at the valve port of the fixed valve seat 14, and the fixed valve ball 13 cannot be in good sealing fit with the valve port.
As shown in fig. 2 and 3, the upper end of the fixed valve housing 11 is provided with a guide plate 18, the guide plate 18 is provided with a guide hole and a plurality of through-flow holes 17, the guide hole is located at the center of the guide plate 18, and the through-flow holes 17 are circular holes and are arranged around the guide hole in the axial direction of the guide hole.
In this embodiment, the fixed valve assembly further comprises a guide rod 10, the cross section of the guide rod is circular, the guide rod 10 is located above the fixed valve ball 13, and the guide rod 10 is guided to be slidably fitted in a guide hole of the guide plate 18. Wherein the upper end surface of the guide bar 10 is higher than the upper surface of the guide plate 18.
As shown in fig. 2 and 4, a flange plate 23 is arranged at the lower end of the guide rod 10, a fixed pressure spring 12 is sleeved on the guide rod 10, the upper end of the fixed pressure spring 12 is pressed against the lower side surface of the guide plate 18, the lower end of the fixed pressure spring 12 is pressed against the upper side surface of the flange plate 23, and the fixed pressure spring 12 is used for applying an elastic acting force to the flange plate 23, so that the lower side surface of the flange plate 23 is pressed against the fixed valve ball 13, and further, the lower end of the guide rod 10 is pressed against the fixed valve ball 13, and the fixed valve ball 13 can be quickly seated at the valve opening of the fixed valve seat 14 when the down stroke of the inclined shaft oil well pump is ensured.
In this embodiment, the guide rod 10 has a guide section 21, the guide rod 10 is guided and assembled in the guide hole through the guide section 21, the guide section 21 is provided with a guide groove 19, the guide groove 19 extends along the axial direction of the guide rod 10, a lower side groove wall of the guide groove 19 forms a step surface 22 with a step structure, and the step surface is used for being in stop fit with a lower side surface of the guide plate 18, so as to prevent the fixed compression spring 12 from being compressed excessively to cause fatigue damage, and further, the fixed compression spring 12 fails.
Moreover, through set up guide way 19 on guide bar 10, make guide bar 10 can be radial spacing to fixed pressure spring 12 in the middle part of two guide ways 19, and then make conducting rod 10 can carry out radial spacing to whole fixed pressure spring 12 at the flexible in-process of fixed pressure spring 12, can not make the local appearance of fixed pressure spring 12 unsettled, guarantee the stability of fixed pressure spring 12 in compression process. Wherein the guide groove 19 constitutes a guide notch.
As shown in fig. 4 and 5, the cross section of the guide groove 19 is fan-shaped, a guide protrusion 20 is arranged in the guide hole of the corresponding guide plate, and the guide protrusion 20 extends along the axial direction of the guide hole; the guide protrusion 20 is adapted to the guide groove 19, that is, the cross section of the guide protrusion 20 is fan-shaped, and the guide rod 10 is guided and assembled in the guide hole by the guide fit of the guide protrusion 20 and the guide groove 19.
In this embodiment, the guide grooves 19 are uniformly and alternately arranged with four in the circumferential direction of the guide rod 10, and the number of the corresponding guide protrusions 20 is four, that is, the guide protrusions 20 correspond to the guide grooves 19 one to one, so as to ensure the stability of the guide rod 10 during the reciprocating sliding in the guide hole. In other embodiments, the number of guide grooves may be one, two, three, and five or more, as needed.
In this embodiment, the upper side wall of the guide slot 19 is an opening structure, which is designed to facilitate the guide rod 10 to be guided and assembled in the guide hole from the lower side of the guide plate 18.
As shown in fig. 1 and 2, the lower end surface of the guide rod 10 is a plane, a centering rib 24 is arranged in the fixed valve cover 11, and the centering rib 24 is used for centering the fixed valve ball 13 when the fixed valve ball 13 reciprocates, so that the fixed valve ball 13 moves along a straight line, and the problem of clamping stagnation caused by the deflection of the fixed valve ball 13 is avoided.
In this embodiment, the inner diameter of the pressing cap 8 is smaller than the outer diameter of the upper portion of the guide rod 10, so that when the fixed valve ball 13 is stuck, the lower end surface of the pressing cap 8 impacts the upper end surface of the guide rod 10 to force the fixed valve ball 13 to move downward, thereby eliminating the problem of sticking of the fixed valve ball 13. Wherein the pressure cap 8 constitutes the impact portion.
The working principle of the inclined shaft oil pump is as follows:
during the up stroke, the sucker rod drives the plunger 4 to move upwards, the space in the pump barrel 2 is increased, the pressure in the pump barrel 2 is reduced, the floating valve ball 6 is seated at the valve port of the floating valve seat 7, the fixed valve ball 13 moves upwards along the righting rib 24 to be opened, the guide rod 10 is further pushed to move upwards, and the flange plate 23 of the guide rod 10 can compress the fixed pressure spring 12; oil enters the fixed valve cover 11 from the lower part of the pump through a valve port of the fixed valve seat 14, the fixed valve ball 13 continues to move upwards under the pressure action of the oil, so that the flange plate 23 of the guide rod 10 continues to compress the fixed compression spring 12, and the fixed compression spring 12 stores energy in the compression process; when the lower side groove wall of the guide groove 19 is in stop fit with the lower side surface of the guide plate 18, the guide rod 10 does not go upward any more, and the fixed pressure spring 12 is not compressed any more, so that the fixed pressure spring 12 is prevented from being compressed excessively, and the service life of the fixed pressure spring 12 is prolonged. In the process, oil entering the fixed valve housing 11 passes through the through-hole pump cylinder 2.
During the down stroke, the sucker rod and the plunger 4 fall back under the self gravity, the pressure in the pump barrel 2 is increased, and the fixed valve ball 13 moves downwards along the righting rib 24 under the combined action of the pressure in the pump barrel 2, the dead weight and the fixed pressure spring 12 so as to be seated on the valve port of the fixed valve seat 14, so that the fixed valve ball 13 is timely returned; the floating valve ball 6 overcomes the floating pressure spring 16 and self-weight to open upwards under the pressure action in the pump cylinder 2, and oil liquid in the pump cylinder 2 enters the floating valve cover 5 through the valve port of the floating valve seat 7 and is discharged into the plunger 4 through the through-flow hole at the upper part of the floating valve cover 5. The plunger 4 is driven by the sucker rod to reciprocate up and down to complete the pumping action of the ground bottom oil.
In the process, if the fixed valve ball 13 is stuck, the plunger 4 can be quickly lowered, so that the lower end face of the pressing cap 8 impacts the upper end face of the guide rod 10 to force the fixed valve ball 13 to move downwards, the stuck problem of the fixed valve ball 13 is eliminated, and the smooth work of the inclined-well oil pump is ensured.
Embodiment 2 of the slant well oil-well pump of the invention:
in embodiment 1, the guide rod 10 has a guide section 21, the guide section 21 is provided with a guide groove 19, and a lower side wall of the guide groove 19 is in stop fit with a lower side wall of the guide plate 18 to prevent the fixed compression spring 12 from being excessively compressed and causing fatigue damage. In this embodiment, the guide rod includes a major diameter section and a minor diameter section, an annular step structure is formed at a connection position of the major diameter section and the minor diameter section, the guide rod is guided and assembled in the guide hole through the minor diameter section, and a step surface of the annular step structure is used for being in stop fit with the guide plate to prevent the compression spring from being over-compressed.
Embodiment 3 of the slant well oil-well pump of the present invention:
in embodiment 1, the guide rod 10 has a guide section 21, the guide notch is a guide groove 19, and the lower side wall of the guide groove 19 is in stop fit with the lower side wall of the guide plate 18 to prevent the fixed compression spring 12 from being excessively compressed and causing fatigue damage. In this embodiment, the guide notch is formed by cutting a part of the guide section, and the cross section of the part is in a bow shape, that is, the guide notch is formed by removing two side groove walls of the guide groove in the width direction, the lower part of the guide notch forms a step structure, and the step surface of the step structure is used for being in stop fit with the guide plate to prevent the fixed compression spring from being over compressed.
Embodiment 4 of the slant well oil-well pump of the present invention:
in embodiment 1, the upper side groove wall of the guide groove is of an open structure, so that the guide rod can be conveniently assembled into the guide hole from the lower part of the guide plate in a guiding way. In this embodiment, the upper end of guide bar is equipped with the striking plate, and the striking plate supplies to press the lower extreme striking of cap in order to guarantee the homogeneity of guide bar atress, and the upside cell wall of guide way is enclosed construction this moment, when the assembly, can assemble the guide bar in the guiding hole by the below direction of guide plate earlier, then welds the striking plate in the upper end of guide bar again.
in embodiment 1, the lower end surface of the guide rod 10 is a plane, a centering rib 24 is provided in the fixed valve housing 11, and the centering rib 24 is used for centering the fixed valve ball 13 when the fixed valve ball 13 reciprocates, so that the fixed valve ball 13 moves linearly. In this embodiment, do not set up in the fixed valve cover and right the muscle, the lower terminal surface of guide bar is the arc surface, and this arc surface and the spherical surface adaptation of fixed valve ball to at the fixed valve ball up-and-down reciprocating motion in-process, make fixed valve ball along linear motion.
in embodiment 1, the lower portion of the traveling valve housing 5 is provided with a pressing cap 8, the upper end and the lower end of the pressing cap 8 are both of an open structure, and the inner diameter of the pressing cap 8 is smaller than the outer diameter of the upper portion of the guide rod 10, so that when the fixed valve ball 13 is stuck, the lower end surface of the pressing cap 8 hits the upper end surface of the guide rod 10, thereby releasing the stuck of the fixed valve ball 13. In this embodiment, the lower portion of the traveling valve bonnet is provided with an impact cylinder, the lower end of the impact cylinder is of a closed structure, the upper end of the impact cylinder is of an open structure, the wall of the impact cylinder is provided with a flow passage, and when the fixed valve ball is stuck, the upper end face of the guide rod is impacted by the lower end face of the impact cylinder to release the stuck of the fixed valve ball.
In the embodiment of the standing valve assembly of the slant well oil pump according to the present invention, the structure of the standing valve assembly of the slant well oil pump in this embodiment is the same as that of any one of embodiments 1 to 6 of the slant well oil pump described above, and thus, the description thereof is omitted.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention, the scope of the present invention is defined by the appended claims, and all structural changes that can be made by using the contents of the description and the drawings of the present invention are intended to be embraced therein.
Claims (10)
1. Standing valve assembly of inclined shaft oil-well pump includes:
the fixed valve cover is internally provided with a guide plate, and the guide plate is provided with a guide hole;
the fixed valve seat is arranged in the fixed valve cover and is provided with a valve port;
the fixed valve ball is seated at the valve port of the fixed valve seat;
the guide rod is positioned above the fixed valve ball and is assembled in the guide hole of the fixed valve cover in a guiding way;
the fixed pressure spring is sleeved on the guide rod and used for applying an elastic acting force towards the fixed valve ball to the guide rod so as to enable the lower end of the guide rod to be pressed against the fixed valve ball;
the guide rod is characterized by comprising a large-diameter section and a small-diameter section, an annular step structure is formed at the connecting position of the large-diameter section and the small-diameter section, the guide rod is assembled in the guide hole through the small-diameter section in a guide mode, and the step surface of the annular step structure is matched with the guide plate in a stop mode so as to prevent the fixed compression spring from being excessively compressed;
or the guide rod is provided with a guide section, the guide rod is assembled in the guide hole in a guide mode through the guide section, the guide section is provided with a guide notch, the guide notch extends along the axial direction of the guide rod, the lower portion of the guide notch forms a step structure, and the step surface of the step structure is in stop fit with the guide plate to prevent the fixed compression spring from being excessively compressed.
2. The standing valve assembly of claim 1, wherein when the guide bar has a guide notch, the guide notch is a guide groove, and a lower groove wall of the guide groove forms a step surface of the step structure.
3. The standing valve assembly of claim 2 wherein the upper groove wall of the guide groove is open.
4. The standing valve assembly of claim 2 wherein the guide channel is fan-shaped in cross-section.
5. The standing valve assembly of any one of claims 1 to 4 wherein at least two of the guide notches are spaced circumferentially around the guide rod.
6. The standing valve assembly of any one of claims 1 to 4 wherein the lower end surface of the guide rod is a flat surface, and the standing valve housing has a centering rib formed therein for centering the standing valve ball during reciprocating movement of the standing valve ball so as to move the standing valve ball linearly.
7. The standing valve assembly of an inclined-well pump according to any of claims 1 to 4, wherein the lower end of the guide rod is provided with a flange plate, the lower end of the stationary compression spring is pressed against the flange plate, and the upper end of the stationary compression spring is pressed against the guide plate.
8. The inclined well oil-well pump, including the pump cylinder, is equipped with plunger and traveling valve assembly in the pump cylinder, the lower extreme of pump cylinder connects with the standing valve assembly, characterized by, the standing valve assembly is the standing valve assembly of the inclined well oil-well pump of any claim 1-7.
9. The slant well pump of claim 8, wherein the traveling valve assembly has a striking portion at a lower portion thereof for striking the guide rod to release the jamming when the ball of the stationary valve is jammed.
10. The slant well pump according to claim 9, wherein a pressing cap is provided at a lower portion of the traveling valve assembly, an upper end and a lower end of the pressing cap are both of an open structure, and an inner diameter of the pressing cap is smaller than an outer diameter of an upper portion of the guide rod so as to strike an upper end surface of the guide rod through a lower end surface of the pressing cap when the fixing valve ball is stuck, the pressing cap constituting the striking portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011203325.1A CN112324651A (en) | 2020-11-02 | 2020-11-02 | Inclined shaft oil well pump and standing valve assembly thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011203325.1A CN112324651A (en) | 2020-11-02 | 2020-11-02 | Inclined shaft oil well pump and standing valve assembly thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112324651A true CN112324651A (en) | 2021-02-05 |
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ID=74324222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011203325.1A Pending CN112324651A (en) | 2020-11-02 | 2020-11-02 | Inclined shaft oil well pump and standing valve assembly thereof |
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| Country | Link |
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| CN (1) | CN112324651A (en) |
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| US4685517A (en) * | 1985-01-22 | 1987-08-11 | Baggett Jay W | Pressure differential plunger |
| CN2779110Y (en) * | 2005-01-07 | 2006-05-10 | 汪慧 | Spray-proof device of oil-well pump |
| CN201246500Y (en) * | 2008-08-19 | 2009-05-27 | 杨智勇 | Long service life high-pressure single flow valve |
| CN201521420U (en) * | 2009-09-10 | 2010-07-07 | 王巧云 | Defueling pump |
| CN204961252U (en) * | 2015-07-28 | 2016-01-13 | 濮阳中石集团有限公司 | Novel long column stopper oil -well pump |
| CN206319863U (en) * | 2016-12-26 | 2017-07-11 | 胜利油田金岛实业有限责任公司 | High-efficiency anti-corrosion wearing inclined shaft pump |
| CN207539364U (en) * | 2017-10-13 | 2018-06-26 | 天津奥美阀门自控设备有限公司 | A kind of sleeve spool valve fit structure of telescoping valve |
| CN110630765A (en) * | 2018-06-25 | 2019-12-31 | 虞君道 | Ceramic sheet type upper water inlet elastic water diversion valve core |
| CN210799331U (en) * | 2019-10-14 | 2020-06-19 | 中国石油化工股份有限公司 | Universal impact open type closed controller on oil well pump |
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2020
- 2020-11-02 CN CN202011203325.1A patent/CN112324651A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4685517A (en) * | 1985-01-22 | 1987-08-11 | Baggett Jay W | Pressure differential plunger |
| CN2779110Y (en) * | 2005-01-07 | 2006-05-10 | 汪慧 | Spray-proof device of oil-well pump |
| CN201246500Y (en) * | 2008-08-19 | 2009-05-27 | 杨智勇 | Long service life high-pressure single flow valve |
| CN201521420U (en) * | 2009-09-10 | 2010-07-07 | 王巧云 | Defueling pump |
| CN204961252U (en) * | 2015-07-28 | 2016-01-13 | 濮阳中石集团有限公司 | Novel long column stopper oil -well pump |
| CN206319863U (en) * | 2016-12-26 | 2017-07-11 | 胜利油田金岛实业有限责任公司 | High-efficiency anti-corrosion wearing inclined shaft pump |
| CN207539364U (en) * | 2017-10-13 | 2018-06-26 | 天津奥美阀门自控设备有限公司 | A kind of sleeve spool valve fit structure of telescoping valve |
| CN110630765A (en) * | 2018-06-25 | 2019-12-31 | 虞君道 | Ceramic sheet type upper water inlet elastic water diversion valve core |
| CN210799331U (en) * | 2019-10-14 | 2020-06-19 | 中国石油化工股份有限公司 | Universal impact open type closed controller on oil well pump |
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