CN111608904A - Flexible sealing plunger pump - Google Patents
Flexible sealing plunger pump Download PDFInfo
- Publication number
- CN111608904A CN111608904A CN202010464088.8A CN202010464088A CN111608904A CN 111608904 A CN111608904 A CN 111608904A CN 202010464088 A CN202010464088 A CN 202010464088A CN 111608904 A CN111608904 A CN 111608904A
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- CN
- China
- Prior art keywords
- plunger
- pump
- sealing
- flexible
- oil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 108
- 230000000712 assembly Effects 0.000 claims abstract description 12
- 238000000429 assembly Methods 0.000 claims abstract description 12
- 239000003921 oil Substances 0.000 claims description 56
- 239000010779 crude oil Substances 0.000 claims description 13
- 239000004576 sand Substances 0.000 claims description 10
- 239000002861 polymer material Substances 0.000 claims description 6
- 238000005086 pumping Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 4
- 239000012535 impurity Substances 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 6
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- 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
- F04B53/14—Pistons, piston-rods or piston-rod connections
- F04B53/143—Sealing provided on the piston
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
The embodiment of the invention provides a flexible sealing plunger pump, and relates to the technical field of oil pumps. The flexible sealing plunger pump comprises a pump cylinder, a plunger and a plurality of sealing assemblies, an oil inlet is formed in the pump cylinder, the plunger is movably mounted in the pump cylinder, the sealing assemblies are sequentially arranged, each sealing assembly comprises a sealing ring, the sealing ring sleeves the plunger and selectively contacts with the inner wall of the pump cylinder, the sealing rings are flexible rings, when the plunger moves towards the direction far away from the oil inlet, the sealing rings are separated from the pump cylinder, when the plunger moves towards the direction close to the oil inlet, the sealing rings contact with the inner wall of the pump cylinder, and therefore the inner walls of the plunger and the pump cylinder are sealed. When the plunger moves relative to the pump barrel in the direction far away from the oil inlet, the sealing ring is separated from the interior of the pump barrel, and the resistance of the plunger in the downward process can be reduced. When the plunger moves towards the direction close to the oil inlet relative to the pump barrel, the sealing ring is in contact with the inner wall of the pump barrel so as to seal the plunger and the pump barrel, and the pumping efficiency of the whole flexible sealing plunger pump is improved.
Description
Technical Field
The invention relates to the technical field of oil pumps, in particular to a flexible sealing plunger pump.
Background
In the mechanical production process of the oil well, the flexible sealing plunger pump cannot work normally, and the flexible sealing plunger pump is the main reason for influencing the normal production of the oil well and increasing the overhaul operation. Particularly, the ternary well and the polymer well are generally 2-3 months in pump detection period due to production characteristics, and the production is seriously influenced by the rate of reducing production by repeated operation. Resulting in lower pumping efficiency of the current flexible seal plunger pump.
Disclosure of Invention
The invention aims to provide a flexible sealing plunger pump, which can improve the pumping efficiency of the whole flexible sealing plunger pump.
Embodiments of the invention may be implemented as follows:
the embodiment of the invention provides a flexible sealing plunger pump, which comprises: the plunger pump comprises a pump barrel, a plunger and a plurality of sealing components, wherein an oil inlet is formed in the pump barrel, the plunger is movably installed in the pump barrel, the sealing components are sequentially arranged, each sealing component comprises a sealing ring, the sealing ring is sleeved on the plunger and selectively contacts with the inner wall of the pump barrel, the sealing ring is a flexible ring, when the plunger moves towards the direction far away from the oil inlet, the sealing ring is separated from the pump barrel, and when the plunger moves towards the direction close to the oil inlet, the sealing ring contacts with the inner wall of the pump barrel so as to seal the plunger and the inner wall of the pump barrel.
In an optional embodiment of the present invention, the sealing assembly further includes a fixing ring, the fixing ring is sleeved on the plunger, the sealing ring is sleeved on the fixing ring, and a length of the fixing ring is greater than a length of the sealing ring.
In an alternative embodiment of the present invention, the sealing ring is made of a polymer material.
In an optional embodiment of the present invention, a cavity is disposed inside the plunger, a first oil port is disposed on the plunger between two adjacent sealing assemblies, the first oil port is communicated with the cavity, and a second oil port is disposed on a side wall of one end of the plunger away from the bottom wall of the pump cylinder, and the second oil port is selectively communicated with the cavity.
In an optional embodiment of the present invention, a boss is annularly disposed on an inner wall of the plunger away from the first oil port, and the flexible sealing plunger pump further includes a traveling valve, which selectively abuts against or disengages from the boss, so that the second oil port is selectively blocked or communicated with the cavity.
In an alternative embodiment of the present invention, the boss is disposed adjacent to the second oil port.
In an optional embodiment of the present invention, there are two second oil ports, and the two second oil ports are correspondingly disposed.
In an alternative embodiment of the present invention, a sand setting member is further disposed in the plunger, and the sand setting member is used for increasing the flow speed of the crude oil entering the cavity.
In an alternative embodiment of the invention, the sand trap extends helically.
In an alternative embodiment of the present invention, an opening is disposed on a bottom wall of the pump cylinder, and the flexible sealing plunger pump further includes a fixed valve installed at the opening to seal the opening.
The embodiment of the invention has the following beneficial effects: the flexible sealing plunger pump comprises a pump cylinder, a plunger and a plurality of sealing assemblies, an oil inlet is formed in the pump cylinder, the plunger is movably mounted in the pump cylinder, the sealing assemblies are sequentially arranged, each sealing assembly comprises a sealing ring, the sealing ring sleeves the plunger and selectively contacts with the inner wall of the pump cylinder, the sealing rings are flexible rings, when the plunger moves towards the direction far away from the oil inlet, the sealing rings are separated from the pump cylinder, when the plunger moves towards the direction close to the oil inlet, the sealing rings contact with the inner wall of the pump cylinder, and therefore the inner walls of the plunger and the pump cylinder are sealed.
In the embodiment of the invention, when the plunger moves upwards, namely downwards, relative to the pump barrel in the direction far away from the oil inlet, the sealing ring is separated from the pump barrel, so that the resistance of the plunger in the downward process can be reduced. When the plunger moves towards the direction close to the oil inlet relative to the pump barrel, namely upwards, the sealing ring is contacted with the inner wall of the pump barrel so as to seal the plunger and the pump barrel, and the pumping efficiency of the whole flexible sealing plunger pump is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a cross-sectional view from a first perspective of a flexible sealed plunger pump provided in accordance with an embodiment of the present invention;
FIG. 2 is a cross-sectional view from a second perspective of a flexible sealed plunger pump provided in accordance with an embodiment of the present invention.
Icon: 100-flexible sealed plunger pump; 110-a pump cylinder; 112-opening; 120-a plunger; 122-a mounting groove; 124-cavity; 126-first oil port; 128-a second oil port; 129-boss; 130-a seal assembly; 132-a fixed ring; 134-a sealing ring; 140-a sand setting member; 150-a fixed valve; 160-sucker rod; 170 — traveling valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present 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 given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. indicate an orientation or a positional relationship based on that shown in the drawings or that the product of the present invention is used as it is, this is only for convenience of description and simplification of the description, and it does not indicate or imply that the device or the element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.
Examples
Referring to fig. 1 and fig. 2, the present embodiment provides a flexible sealing plunger pump 100, and the flexible sealing plunger pump 100 provided in the present embodiment can improve the pumping efficiency of the entire flexible sealing plunger pump 100.
In the present embodiment, the flexible seal plunger pump 100 includes: the plunger 120 is movably installed in the pump barrel 110, the plurality of sealing assemblies 130 are sequentially sleeved on the plunger 120, an oil inlet is formed in the pump barrel 110 and selectively contacted with the inner wall of the pump barrel 110, when the plunger 120 moves towards a direction far away from the oil inlet, the sealing assemblies 130 are separated from the pump barrel 110, and when the plunger 120 moves towards a direction close to the oil inlet, the sealing assemblies 130 are contacted with the inner wall of the pump barrel 110 so as to seal the plunger 120 and the pump barrel 110.
In the present embodiment, for convenience of description, the direction away from the oil inlet is taken as the downward direction, and the direction close to the oil inlet is taken as the upward direction.
In the present embodiment, when the plunger 120 moves in a direction away from the oil inlet, i.e., downward, relative to the pump barrel 110, the seal assembly 130 is disengaged from the interior of the pump barrel 110, which can reduce the resistance of the plunger 120 during downward movement. When the plunger 120 moves relative to the pump barrel 110 in a direction close to the oil inlet, i.e., upward, the seal assembly 130 contacts the inner wall of the pump barrel 110 to seal the plunger 120 and the pump barrel 110, thereby improving the pumping efficiency of the entire flexible seal plunger pump 100.
In this embodiment, the sealing assembly 130 includes a fixing ring 132 and a sealing ring 134, the fixing ring 132 is disposed on the plunger 120 and is fixedly connected to the plunger 120, the sealing ring 134 is disposed on the fixing ring 132, and the length of the fixing ring 132 is greater than that of the sealing ring 134.
In the present embodiment, the sealing ring 134 is selectively in contact with the inner wall of the pump cylinder 110, and when the plunger 120 moves downward, the sealing ring 134 is out of contact with the inner wall of the pump cylinder 110, and when the plunger 120 moves upward, the sealing ring 134 is in contact with the inner wall of the pump cylinder 110 to seal the plunger 120 with the inner wall of the pump cylinder 110.
In this embodiment, the fixing ring 132 is sleeved on the plunger 120, and the fixing ring 132 with a longer length is connected to the plunger 120, so that when the sealing ring 134 contacts and abuts against the inner wall of the pump barrel 110, the contact area between the sealing ring 134 and the plunger 120 can be increased, and the fixing effect between the sealing ring 134 and the plunger 120 can be improved.
In this embodiment, the plunger 120 is annularly provided with a plurality of mounting grooves 122, and the fixing ring 132 is clamped in the mounting grooves 122, so as to improve the fixing effect of the fixing ring 132.
In this embodiment, when the seal assembly 130 includes only the sealing ring 134, the sealing ring 134 is disposed directly over the plunger 120.
In this embodiment, the sealing ring 134 is a flexible ring. During the downward movement of the plunger 120, the sealing ring 134 is retracted inward by the gravity of the plunger 120, and is disengaged from the inner wall of the pump barrel 110, thereby reducing the frictional resistance against the inner wall of the pump barrel 110 during downward movement. When the plunger 120 moves in an upward stroke, the sealing ring 134 expands outward under the action of the liquid column pressure in the pump cylinder 110, and forms a good seal with the inner wall of the pump cylinder 110, thereby improving the pumping efficiency.
In the present embodiment, the sealing ring 134 is made of a polymer material. The sealing ring 134 made of high polymer material has excellent physical properties of high temperature resistance, wear resistance and high elastic modulus, improves the sealing performance of the pump cylinder 110 and the plunger 120, and greatly improves the pump efficiency.
In this embodiment, the sealing ring 134 has a good elastic modulus, and is suitable for a heavy oil production well with high crude oil viscosity and high wax content.
The material hardness of the sealing ring 134 made of high polymer is far lower than that of the chrome-plated pump cylinder 110, and the plunger 120 is replaced by pulling out the rod column during maintenance, so that the service life of the flexible sealing plunger pump 100 is greatly prolonged, and the maintenance operation cost is reduced.
In this embodiment, the flexible sealing plunger pump 100 further includes a sucker rod 160, the sucker rod 160 is connected to one end of the plunger 120 close to the oil inlet, and in the descending process, under the gravity action of the sucker rod 160, the flexible sealing ring 134 is retracted inward, so as to reduce the descending resistance.
In this embodiment, a cavity 124 is formed inside the plunger 120, a first oil port 126 is formed between two adjacent sealing assemblies 130 on the plunger 120, the first oil port 126 is communicated with the cavity 124, a second oil port 128 is formed on a side wall of one end of the plunger 120, which is far away from the bottom wall of the pump cylinder 110, and the second oil port 128 is selectively communicated with the cavity 124.
In this embodiment, a flow space is formed between the plurality of seal assemblies 130 during the upward stroke movement of the plunger 120. As the plunger 120 travels upward, the crude oil carries impurities between the plunger 120 and the barrel 110. When the plunger 120 descends, oil is fed into the pump cylinder 110, the pressure gradually increases, the pressure of a flow space formed between two adjacent sealing assemblies 130 is higher than the pressure in the plunger 120, and crude oil enters the pump cylinder 110 from the first oil port 126 and is discharged from the second oil port 128.
In this embodiment, the inner wall of the plunger 120 is annularly provided with a boss 129 away from the first oil port 126, and the flexible sealing plunger pump 100 further includes a traveling valve 170, wherein the traveling valve 170 selectively abuts against or disengages from the boss 129, so that the second oil port 128 is selectively disconnected or communicated with the cavity 124.
In this embodiment, when the plunger 120 descends, because the pressure increases in the pump barrel 110, the traveling valve 170 opens and makes the second oil port 128 and the cavity 124 conduct, and crude oil enters into the oil pipe through the second oil port 128, flows from top to bottom, can greatly take away the impurity carried in the crude oil, makes impurity difficult to remain in the clearance of pump barrel 110 and plunger 120, solves the card pump problem.
In the present embodiment, the boss 129 is disposed adjacent to the second oil port 128. The traveling valve 170 is disposed adjacent to the second port 128.
In this embodiment, there are two second oil ports 128, and the two second oil ports 128 are correspondingly disposed. When the plunger 120 descends, the amount of crude oil entering the cavity 124 can be increased, the flow rate of crude oil in the cavity 124 is increased, the scouring force of impurities between the plunger 120 and the pump barrel 110 is improved, and the phenomenon that the impurities stay between the plunger 120 and the pump barrel 110 to cause the blockage of the flexible sealing plunger pump 100 is avoided.
In this embodiment, a sand trap 140 is further disposed in the plunger 120, and the sand trap 140 is used to increase the flow rate of the crude oil entering the cavity 124.
In this embodiment, when the plunger 120 is moving downwards, the crude oil enters the cavity 124 from the second oil port 128 and then flows along the extending direction of the sand setting member 140, so as to accelerate the flow rate of the crude oil, thereby increasing the flushing force on the impurities.
In this embodiment, the sand trap 140 extends in a spiral shape. When crude oil passes through the spiral sand setting member 140, the generated circulation flow can carry impurities to a great extent, so that the impurities are not easy to remain in a gap between the pump barrel 110 and the plunger 120, and the problem of pump blockage is solved.
In this embodiment, the bottom wall of the pump barrel 110 is provided with an opening 112, and the flexible sealing plunger pump 100 further includes a fixed valve 150, and the fixed valve 150 is installed at the opening 112 to seal the opening 112.
In this embodiment, the inner wall of the pump barrel 110 and the outer surface of the plunger 120 are both provided with polymer material layers, and the polymer material layers are formed by a high-temperature curing process, so that the crystallization of mineralized particles such as calcium carbonate, magnesium, barium, silicate and the like on the surfaces of the parts of the flexible sealing plunger pump 100 can be effectively inhibited to form scale layers, and the blockage caused by scaling can be avoided and slowed down.
The working principle of the flexible sealing plunger pump 100 provided by the embodiment is as follows: in this embodiment, the seal assembly 130 is out of contact with the interior of the pump barrel 110 as the plunger 120 moves downward. When the plunger 120 is up, the sealing assembly 130 contacts the inner wall of the pump barrel 110 to seal the plunger 120 with the pump barrel 110.
In summary, in the present embodiment, when the plunger 120 moves upward, i.e., downward, relative to the pump barrel 110 in a direction away from the oil inlet, the sealing assembly 130 is separated from the interior of the pump barrel 110, so as to reduce the resistance of the plunger 120 during the downward movement. When the plunger 120 moves relative to the pump barrel 110 in a direction close to the oil inlet, i.e., upward, the seal assembly 130 contacts the inner wall of the pump barrel 110 to seal the plunger 120 and the pump barrel 110, thereby improving the pumping efficiency of the entire flexible seal plunger pump 100.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. A flexible seal plunger pump, comprising: the plunger pump comprises a pump barrel, a plunger and a plurality of sealing components, wherein an oil inlet is formed in the pump barrel, the plunger is movably installed in the pump barrel, the sealing components are sequentially arranged, each sealing component comprises a sealing ring, the sealing ring is sleeved on the plunger and selectively contacts with the inner wall of the pump barrel, the sealing ring is a flexible ring, when the plunger moves towards the direction far away from the oil inlet, the sealing ring is separated from the pump barrel, and when the plunger moves towards the direction close to the oil inlet, the sealing ring contacts with the inner wall of the pump barrel so as to seal the plunger and the inner wall of the pump barrel.
2. The flexible sealing plunger pump of claim 1, wherein the seal assembly further comprises a retaining ring, the retaining ring is sleeved on the plunger, the sealing ring is sleeved on the retaining ring, and the length of the retaining ring is greater than the length of the sealing ring.
3. The flexible sealing plunger pump of claim 2, wherein the sealing ring is made of a polymer material.
4. The flexible sealing plunger pump of claim 1, wherein a cavity is formed inside the plunger, a first oil port is formed on the plunger between two adjacent sealing assemblies and communicated with the cavity, and a second oil port is formed on a side wall of one end of the plunger, which is far away from the bottom wall of the pump cylinder, and selectively communicated with the cavity.
5. The flexible sealing plunger pump of claim 4, wherein a boss is disposed on the inner wall of the plunger away from the first oil port, and the flexible sealing plunger pump further comprises a traveling valve selectively abutting against or disengaging from the boss, so that the second oil port is selectively blocked or communicated with the cavity.
6. The flexible sealing plunger pump of claim 5, wherein the boss is disposed proximate to the second oil port.
7. The flexible sealing plunger pump of claim 4, wherein the number of the second oil ports is two, and the two second oil ports are correspondingly arranged.
8. The flexible sealing plunger pump of claim 4, characterized in that a sand trap is further provided in the plunger for increasing the flow rate of crude oil into the cavity.
9. The flexible sealing plunger pump of claim 8, wherein the grit member extends in a spiral.
10. The flexible sealed plunger pump of any one of claims 1-9, wherein an opening is provided in the bottom wall of the pump barrel, and further comprising a standing valve mounted at the opening to seal the opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010464088.8A CN111608904A (en) | 2020-05-27 | 2020-05-27 | Flexible sealing plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010464088.8A CN111608904A (en) | 2020-05-27 | 2020-05-27 | Flexible sealing plunger pump |
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| Publication Number | Publication Date |
|---|---|
| CN111608904A true CN111608904A (en) | 2020-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010464088.8A Pending CN111608904A (en) | 2020-05-27 | 2020-05-27 | Flexible sealing plunger pump |
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| CN (1) | CN111608904A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113404685A (en) * | 2021-07-19 | 2021-09-17 | 吕远 | Wear-resisting efficient short plunger rod pump |
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| US1497558A (en) * | 1923-05-01 | 1924-06-10 | Jeremiah J Fitzpatrick | Traveling valve for working barrels for oil-well pumps |
| US4013387A (en) * | 1972-06-21 | 1977-03-22 | Gage Lonnie L | Oil well pump |
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| US20170247989A1 (en) * | 2016-02-29 | 2017-08-31 | Danny M. Casey | Plunger to Form a Liquid Ring to Seal Against Gas Bypass |
| CN205689409U (en) * | 2016-05-11 | 2016-11-16 | 克拉玛依胜利高原机械有限公司 | A kind of soft seal sand prevention card oil pump plunger piston |
| CN108252902A (en) * | 2016-12-28 | 2018-07-06 | 克拉玛依胜利高原机械有限公司 | The process of improved tubing pump and motionless tubing string maintenance pump |
| CN108980018A (en) * | 2018-07-26 | 2018-12-11 | 中国石油天然气股份有限公司 | A kind of soft seal flexibility pump plunger and barrel pump |
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| CN113404685A (en) * | 2021-07-19 | 2021-09-17 | 吕远 | Wear-resisting efficient short plunger rod pump |
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Application publication date: 20200901 |