CN111059046A - Leather cup type damping pumping-assisting whole barrel pump and using method thereof - Google Patents
Leather cup type damping pumping-assisting whole barrel pump and using method thereof Download PDFInfo
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- CN111059046A CN111059046A CN201911396565.5A CN201911396565A CN111059046A CN 111059046 A CN111059046 A CN 111059046A CN 201911396565 A CN201911396565 A CN 201911396565A CN 111059046 A CN111059046 A CN 111059046A
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- leather cup
- plunger
- pumping
- pipe
- leather
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- 239000010985 leather Substances 0.000 title claims abstract description 102
- 238000013016 damping Methods 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000007788 liquid Substances 0.000 claims abstract description 44
- 230000035939 shock Effects 0.000 claims abstract description 23
- 238000010521 absorption reaction Methods 0.000 claims abstract description 20
- 238000007789 sealing Methods 0.000 claims description 22
- 238000011144 upstream manufacturing Methods 0.000 claims description 6
- 230000005484 gravity Effects 0.000 claims description 5
- 230000007797 corrosion Effects 0.000 claims description 4
- 238000005260 corrosion Methods 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims 1
- 235000017491 Bambusa tulda Nutrition 0.000 claims 1
- 241001330002 Bambuseae Species 0.000 claims 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims 1
- 239000011425 bamboo Substances 0.000 claims 1
- 238000010030 laminating Methods 0.000 claims 1
- 239000003129 oil well Substances 0.000 abstract description 14
- 101150038956 cup-4 gene Proteins 0.000 description 28
- 238000005299 abrasion Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 230000002028 premature Effects 0.000 description 4
- 238000000605 extraction Methods 0.000 description 3
- 238000007667 floating Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Images
Classifications
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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
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
-
- 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
- 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
- F04B53/001—Noise damping
- F04B53/003—Noise damping by damping supports
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Environmental & Geological Engineering (AREA)
- Details Of Reciprocating Pumps (AREA)
- Reciprocating Pumps (AREA)
Abstract
The invention provides a leather cup type damping pumping-assisting whole barrel pump and a using method thereof, which mainly realize the damping of the liquid level in the pump by sequentially connecting a short pipe, an inner pipe and a leather cup at the bottom end of a plunger from top to bottom; the axial central lines of the plunger, the short pipe, the inner pipe and the leather cup are overlapped. When the plunger moves downwards, the leather cup is in soft contact with the liquid level, the first shock absorption is realized, meanwhile, the inner tube slides upwards along the inner wall of the short tube until the inner tube is in contact with the bottom end of the plunger, the inner tube stops sliding upwards, the second shock absorption is realized, and the twice shock absorption prolongs the action time of the plunger on the liquid level when the plunger moves downwards, so that the liquid impact of the liquid level on the oil well pump and even the whole oil well pipe string is greatly slowed down, and the purpose of prolonging the service life of the oil well pump and the oil well pipe.
Description
Technical Field
The invention belongs to the technical field of oil field oil extraction equipment, and particularly relates to a leather cup type damping pumping-assisting whole barrel pump and a using method thereof.
Background
At present, a whole barrel pump is generally adopted for oil extraction of an oil field pumping well, a plunger piston can impact a liquid level at a high speed when descending, so that a fluid load is suddenly transferred to an oil pipe from a rod string, and strong shock waves are generated at the same time to damage the whole oil pumping system. The liquid impact effect is more obvious particularly for an oil well with insufficient liquid supply, the number of liquid impacts generated every day is 7200 times by using an oil well with 5 times of impact, and continuous liquid impacts can cause premature fatigue failure of a sucker rod string, premature damage to a valve ball and a valve seat of an oil well pump, accelerated abrasion of a plunger and a pump barrel, and sudden stretching of an oil pipe under the action of liquid impacts to loosen the threads of the oil pipe and cause leakage or breaking failure.
Disclosure of Invention
The embodiment of the invention provides a leather cup type damping pumping-assisting whole barrel pump and a using method thereof, aiming at solving the problems of premature fatigue failure of a sucker rod string, premature damage of a valve ball and a valve seat of an oil well pump and accelerated abrasion of a plunger and a pump barrel caused by high-speed liquid level impact during the downward stroke of the plunger in the whole barrel pump; the second purpose is to solve the problem that the shock wave generated by the downward movement of the plunger causes the sudden stretching of the oil pipe under the action of liquid impact, and the leakage or the disconnection fault occurs.
In order to solve the technical problem, the invention provides a leather cup type damping pumping-assisting whole barrel pump which comprises a plunger, wherein the bottom end of the plunger is hermetically connected with a short pipe, the inner wall of the short pipe is hermetically and slidably connected with an inner pipe, and the lower part of the inner pipe is a leather cup with a downward bowl opening;
the axial central lines of the plunger, the short pipe, the inner pipe and the leather cup are overlapped.
Furthermore, a plurality of annular grooves are formed in the outer wall of the inner pipe from top to bottom at uniform intervals along the circumferential direction, a sealing ring is nested in each annular groove, the outer wall of each sealing ring is attached to the inner wall of the short pipe, and the inner pipe carries the sealing ring to slide downwards or upwards in the short pipe along the axial direction in the upward stroke or the downward stroke of the plunger.
Furthermore, chamfers are arranged on the bottom end face of the short pipe and the top end face of the inner pipe.
Preferably, the inner diameter of the inner tube is the same as the inner diameter of the plunger.
Preferably, the diameter of the bottom of the leather cup is the same as the inner diameter of the inner pipe, and the diameter of the opening of the leather cup is larger than that of the short pipe.
Furthermore, a lip edge is arranged on the edge of the bowl opening of the leather bowl, and the thickness of the lip edge is 1-2 mm.
Preferably, the leather cup is made of corrosion-resistant rubber materials.
Preferably, the short pipe and the inner pipe are both made of stainless steel.
The invention also protects a use method of the leather cup type damping pumping-assisting whole barrel pump, the leather cup type damping pumping-assisting whole barrel pump is lowered into the shaft, when the leather cup type damping pumping-assisting whole barrel pump is in an upper stroke, the plunger moves upwards, and under the action of gravity, the inner pipe slides downwards along the inner pipe wall of the short pipe and is in an extended state; when the leather cup type damping pumping-assisting whole barrel pump is in a downstroke, the plunger moves downwards, the leather cup in the leather cup type damping pumping-assisting whole barrel pump is in soft contact with a liquid level, the inner tube connected with the leather cup receives upward impact force, the inner tube slides upwards along the inner wall of the short tube until being in contact with the bottom end of the plunger, the inner tube stops sliding upwards, and liquid in the leather cup type damping pumping-assisting whole barrel pump enters the plunger and flows into the oil tube from an upstream movable valve.
The invention has the following beneficial effects:
the invention provides a leather cup type shock-absorbing pumping-assisting whole barrel pump and a using method thereof, which are mainly characterized in that a short pipe, an inner pipe and a leather cup are sequentially connected from top to bottom at the bottom end of a plunger to realize shock absorption of the liquid level in the pump, when the plunger descends, the leather cup is in soft contact with the liquid level to realize primary shock absorption, the inner pipe slides upwards along the inner wall of the short pipe until the inner pipe is in contact with the bottom end of the plunger, the inner pipe stops sliding upwards to realize secondary shock absorption, and the two times of shock absorption prolong the action time of the plunger impacting the liquid level when the plunger descends, thereby greatly slowing down the liquid impact action of the liquid level on an oil well pump and even the whole oil well pipe string, and.
In order to make the aforementioned and other objects of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
Fig. 1 is a schematic structural diagram of a leather cup type shock-absorbing pumping-assisting whole barrel pump.
Description of reference numerals:
1. a plunger; 2. a short pipe; 3. an inner tube; 4. a leather cup; 5. and (5) sealing rings.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
In the present invention, the upper, lower, left and right sides in the drawings are regarded as the upper, lower, left and right sides of the leather cup type shock absorption pumping-assistant integral cylinder pump described in the present specification.
The exemplary embodiments of the present invention will now be described with reference to the accompanying drawings, however, the present invention may be embodied in many different forms and is not limited to the embodiments described herein, which are provided for complete and complete disclosure of the present invention and to fully convey the scope of the present invention to those skilled in the art. The terminology used in the exemplary embodiments illustrated in the accompanying drawings is not intended to be limiting of the invention. In the drawings, the same units/elements are denoted by the same reference numerals.
Unless otherwise defined, terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Further, it will be understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense.
The first embodiment:
the invention relates to a leather cup type damping pumping-assisting integral cylinder pump, which comprises a plunger 1, wherein the bottom end of the plunger 1 is connected with a short pipe 2 in a sealing way, the inner wall of the short pipe 2 is connected with an inner pipe 3 in a sealing and sliding way, and the lower part of the inner pipe 3 is provided with a leather cup 4 with a downward bowl opening;
the axial central lines of the plunger 1, the short pipe 2, the inner pipe 3 and the leather cup 4 are superposed.
The oil extraction principle of the whole cylinder pump is as follows: during the up stroke, the plunger assembly moves upwards, the volume of an annular cavity between the upper plunger and the lower pump barrel is increased, the pressure is reduced, the fixed valve is opened, the floating valve is closed under the action of the pressure of a liquid column in the oil pipe, and well liquid enters the annular cavity through the oil inlet/outlet connector; during the down stroke, the plunger assembly moves downwards, the volume of an annular cavity between the upper plunger and the lower pump barrel is reduced, the pressure is increased, the well fluid in the annular cavity enables the fixed valve to be closed through the oil inlet/outlet connector, the floating valve is opened, the well fluid is discharged into the oil pipe through the inner hole channel of the upper plunger, at the moment, the pressure of the fluid column in the oil pipe is applied to the lower plunger through the fixed valve (hydraulic feedback force) due to the closing of the fixed valve, and the plunger is forced to overcome the friction resistance of the thick oil to move downwards.
On the basis of the above principle, the working process of the leather cup type damping pumping-assisting whole barrel pump of the embodiment is as follows:
the leather cup type damping pumping-assisting whole barrel pump is lowered into a shaft, when the leather cup type damping pumping-assisting whole barrel pump is in an up stroke, the plunger 1 moves upwards, and the inner pipe 3 slides downwards along the inner pipe wall of the short pipe 2 under the action of gravity and is in an extending state; when the leather cup type damping pumping-assisting whole barrel pump is in a down stroke, the plunger 1 moves downwards, the leather cup 4 in the leather cup type damping pumping-assisting whole barrel pump is in soft contact with a liquid level, the inner pipe 3 connected with the leather cup 4 is subjected to upward impact force, the inner pipe 3 slides upwards along the inner wall of the short pipe 2 until being in contact with the bottom end of the plunger 1, the inner pipe 3 stops sliding upwards, and liquid in the leather cup type damping pumping-assisting whole barrel pump enters the plunger 1 through the leather cup 4 and flows into the oil pipe from an upstream sliding valve.
Specifically, when the whole barrel pump descends, the leather cup 4 at the lower part of the plunger 1 firstly collides with the liquid level, due to the elasticity of the leather cup 4, the leather cup 4 is in soft contact with the liquid level to play a role of primary shock absorption, when the plunger 1 continues to descend, the inner tube 3 connected with the leather cup 4 is forced to slide upwards in the short tube 2 until the inner tube 3 is in contact with the bottom of the plunger 1 and stops sliding upwards, secondary shock absorption is generated, at the moment, liquid in the pump enters the column through the leather cup 4, and the plunger 1 upwards flows out from the upstream sliding valve and enters the oil tube.
In the embodiment, the short pipe 2 provides a sliding channel for the inner pipe 3, the inner pipe 3 and the short pipe 2 are matched with each other to realize the soft contact between the leather cup 4 and the liquid level or separate from the liquid level, so that the shock absorption is realized twice, and the action time of the plunger on the liquid level impact when the plunger moves downwards is prolonged, so that the liquid impact action of the liquid level on the oil well pump and even the whole oil well pipe string is greatly slowed down, and the purpose of prolonging the service lives of the oil well pump and the oil well pipe string is achieved.
Second embodiment:
the embodiment relates to a leather cup type damping pumping-assisting whole barrel pump, which comprises a plunger 1, wherein the bottom end of the plunger 1 is connected with a short pipe 2 in a sealing way, the inner wall of the short pipe 2 is connected with an inner pipe 3 in a sealing and sliding way, and the lower part of the inner pipe 3 is provided with a leather cup 4 with a downward bowl opening; the axial central lines of the plunger 1, the short pipe 2, the inner pipe 3 and the leather cup 4 are superposed.
In order to ensure the sealing performance during the up-and-down sliding, a plurality of annular grooves are uniformly formed in the outer wall of the inner pipe 3 at intervals along the circumferential direction from top to bottom, a sealing ring 5 is embedded in each annular groove, the outer wall of each sealing ring 5 is attached to the inner wall of the short pipe 2, and the inner pipe 3 carries the sealing ring 5 to axially slide downwards or upwards in the short pipe 2 in the up-stroke or the down-stroke of the plunger 1.
Since the inner pipe 3 slides in the short pipe 2 and abrasion is inevitably generated due to repeated sliding, it is necessary to reduce the occurrence of liquid leakage and air leakage due to abrasion and to ensure good sealing performance, and in the present embodiment, it is preferable to fit a plurality of seal rings 5 around the outer wall of the inner pipe 3 so as to seal the outer wall of the inner pipe 3 and the inner wall of the short pipe 2.
Specifically, the leather cup type damping pumping-assisting whole barrel pump is lowered into a shaft, when the leather cup type damping pumping-assisting whole barrel pump is in an up stroke, the plunger 1 moves upwards, and under the action of gravity, the inner pipe 3 and the sealing ring 5 on the outer wall of the inner pipe slide downwards along the inner pipe wall of the short pipe 2 and are in an extending state; when the leather cup type damping pumping-assisting whole barrel pump is in a down stroke, the plunger 1 moves downwards, the leather cup 4 in the leather cup type damping pumping-assisting whole barrel pump is in soft contact with a liquid level, the inner pipe 3 connected with the leather cup 4 is subjected to upward impact force, the inner pipe 3 carries the sealing ring 5 to slide upwards along the inner wall of the short pipe 2 until the inner pipe is in contact with the bottom end of the plunger 1, the inner pipe 3 stops sliding upwards, and liquid in the leather cup type damping pumping-assisting whole barrel pump enters the plunger 1 through the leather cup 4 and flows into the oil pipe from an upstream sliding valve.
The third embodiment:
in the first or second embodiment, both the tube bottom end surface of the short tube 2 and the tube top end surface of the inner tube 3 are provided with chamfers.
The chamfer is provided to prevent the inner tube 3 from slipping out of the lumen of the spool 2 during the sliding process.
In order to ensure the unobstructed flow of liquid, the inner diameter of the inner tube 3 is the same as the inner diameter of the plunger 1.
The diameter at the bottom of the bowl of leather cup 4 with the internal diameter of inner tube 3 is the same, the bowl mouth diameter of leather cup 4 is greater than the diameter of nozzle stub 2, and leather cup 4 major diameter bowl mouth compares direct hard contact with the liquid level of plunger 1 with the soft contact, and soft contact can play better cushioning effect.
The edge of the bowl opening of the leather bowl 4 is provided with a lip edge, and the thickness of the lip edge is 1 mm-2 mm. The lip edge design can increase the contact area with the liquid surface, reduce impact pressure and further increase the shock absorption effect.
Since the cup 4 needs to be in soft contact with the liquid surface, it is necessary to have elasticity, and preferably, the cup 4 is made of a corrosion-resistant rubber material.
The inner pipe 3 is required to slide along the inner pipe wall of the short pipe 2 under the condition of stress, and therefore, a certain supporting force and extensibility are required, and on the basis of the fact, the short pipe 2 and the inner pipe 3 are preferably made of stainless steel.
Fourth embodiment:
the embodiment protects a use method of the leather cup type damping pumping-assisting whole barrel pump, the leather cup type damping pumping-assisting whole barrel pump is lowered into a shaft, when the leather cup type damping pumping-assisting whole barrel pump is in an up stroke, the plunger 1 moves upwards, and under the action of gravity, the inner pipe 3 slides downwards along the inner pipe wall of the short pipe 2 and is in an extended state; when the leather cup type damping pumping-assisting whole barrel pump is in a downstroke, the plunger 1 moves downwards, the leather cup 4 in the leather cup type damping pumping-assisting whole barrel pump is in soft contact with a liquid level, the inner tube 3 connected with the leather cup 4 is subjected to upward impact force, the inner tube 3 slides upwards along the inner wall of the short tube 2 until being in contact with the bottom end of the plunger 1, the inner tube 3 stops sliding upwards, and the liquid in the leather cup type damping pumping-assisting whole barrel pump enters the plunger 1 and flows into the oil tube from an upstream movable valve.
The leather cup type damping pumping-assisting whole barrel pump comprises a plunger 1, wherein the bottom end of the plunger 1 is connected with a short pipe 2 in a sealing manner, the inner wall of the short pipe 2 is connected with an inner pipe 3 in a sealing and sliding manner, and the lower part of the inner pipe 3 is provided with a leather cup 4 with a downward bowl opening; the axial central lines of the plunger 1, the short pipe 2, the inner pipe 3 and the leather cup 4 are superposed. And chamfers are arranged on the bottom end surface of the short pipe 2 and the top end surface of the inner pipe 3. The inner diameter of the inner tube 3 is the same as the inner diameter of the plunger 1. The diameter of the bottom of the leather cup 4 is the same as the inner diameter of the inner pipe 3, and the diameter of the mouth of the leather cup 4 is larger than that of the short pipe 2. The edge of the bowl opening of the leather bowl 4 is provided with a lip edge, and the thickness of the lip edge is 1 mm-2 mm. The leather cup 4 is made of corrosion-resistant rubber. The short pipe 2 and the inner pipe 3 are both made of stainless steel.
In conclusion, the invention protects a leather cup type shock-absorbing pumping-assisting whole barrel pump and a using method thereof, and mainly realizes shock absorption on the liquid level in the pump by sequentially connecting a short pipe, an inner pipe and a leather cup at the bottom end of a plunger from top to bottom.
It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples for carrying out the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in practice.
Claims (9)
1. The utility model provides a leather bowl formula shock attenuation helps takes out whole section of thick bamboo pump, includes plunger (1), its characterized in that: the bottom end of the plunger (1) is connected with a short pipe (2) in a sealing way, the inner wall of the short pipe (2) is connected with an inner pipe (3) in a sealing and sliding way, and the lower part of the inner pipe (3) is provided with a leather cup (4) with a downward bowl opening;
the axial central lines of the plunger (1), the short pipe (2), the inner pipe (3) and the leather cup (4) are superposed.
2. The leather bowl type shock absorption and pumping-aid whole barrel pump as claimed in claim 1, characterized in that: the outer wall of inner tube (3) is from last to down to offering a plurality of annular groove along circumference even interval, nested a sealing washer (5) in each annular groove, the outer wall laminating of sealing washer (5) in the inner wall of nozzle stub (2), and in the upstroke or the downstroke of plunger (1), inner tube (3) carry sealing washer (5) inside nozzle stub (2) along the axial downwards or upwards slip.
3. The leather bowl type shock absorption and pumping-aid integral cylinder pump as claimed in claim 1 or 2, characterized in that: and chamfers are arranged on the bottom end surface of the short pipe (2) and the top end surface of the inner pipe (3).
4. The leather bowl type shock absorption and pumping-aid whole barrel pump as claimed in claim 1, characterized in that: the inner diameter of the inner tube (3) is the same as the inner diameter of the plunger (1).
5. The leather bowl type shock absorption and pumping-aid whole barrel pump as claimed in claim 1, characterized in that: the diameter of the bottom of the leather cup (4) is the same as the inner diameter of the inner pipe (3), and the diameter of the mouth of the leather cup (4) is larger than that of the short pipe (2).
6. The leather bowl type shock absorption and pumping-aid whole barrel pump as claimed in claim 1, characterized in that: the edge of the bowl opening of the leather bowl (4) is provided with a lip edge, and the thickness of the lip edge is 1-2 mm.
7. The leather bowl type shock absorption and pumping-aid integral cylinder pump as claimed in claim 1 or 6, characterized in that: the leather cup (4) is made of corrosion-resistant rubber materials.
8. The leather bowl type shock absorption and pumping-aid integral cylinder pump as claimed in claim 1 or 2, characterized in that: the short pipe (2) and the inner pipe (3) are both made of stainless steel.
9. The use method of the leather cup type damping and pumping-assisting whole barrel pump as claimed in any one of claims 1 to 8 is characterized in that: the leather cup type damping and pumping-assisting whole barrel pump is lowered into a shaft, when the leather cup type damping and pumping-assisting whole barrel pump is in an up stroke, the plunger (1) moves upwards, the inner pipe (3) slides downwards along the inner pipe wall of the short pipe (2) under the action of gravity and is in an extended state; when the leather cup type damping pumping-assisting whole barrel pump is in a downstroke, the plunger (1) moves downwards, the leather cup (4) and the liquid level soft contact in the leather cup type damping pumping-assisting whole barrel pump are in soft contact, the inner tube (3) connected with the leather cup (4) receives upward impact force, the inner tube (3) upwards slides along the inner wall of the short tube (2) until being in contact with the bottom end of the plunger (1), the inner tube (3) stops sliding upwards, the liquid in the leather cup type damping pumping-assisting whole barrel pump passes through the leather cup (4) enters the plunger (1) and moves a valve from the upstream to flow into the oil tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911396565.5A CN111059046A (en) | 2019-12-30 | 2019-12-30 | Leather cup type damping pumping-assisting whole barrel pump and using method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911396565.5A CN111059046A (en) | 2019-12-30 | 2019-12-30 | Leather cup type damping pumping-assisting whole barrel pump and using method thereof |
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| CN111059046A true CN111059046A (en) | 2020-04-24 |
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| CN201911396565.5A Pending CN111059046A (en) | 2019-12-30 | 2019-12-30 | Leather cup type damping pumping-assisting whole barrel pump and using method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111561444A (en) * | 2020-05-11 | 2020-08-21 | 中国石油天然气股份有限公司 | Oil pump plunger and oil pump |
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| CN2519036Y (en) * | 2001-04-27 | 2002-10-30 | 赵国璋 | Soft friction cylindrical oil-well pump |
| CN2556364Y (en) * | 2002-07-26 | 2003-06-18 | 大庆油田有限责任公司 | Downhole oil-water separating device for continuous oil feeding oil well pump |
| CN101285466A (en) * | 2008-05-23 | 2008-10-15 | 安东石油技术（集团）有限公司 | Ceramic plunger |
| CN202690853U (en) * | 2012-07-29 | 2013-01-23 | 建湖县祥阳橡胶制品有限公司 | Suspension type damping supporting seat |
| CN107313750A (en) * | 2017-06-08 | 2017-11-03 | 中国石油集团渤海钻探工程有限公司 | A kind of plunger lift pumping equipment |
| CN107842573A (en) * | 2017-11-28 | 2018-03-27 | 郭姗姗 | A kind of device for furniture damping |
| CN209705140U (en) * | 2019-02-28 | 2019-11-29 | 常州市一上电动车辆配件有限公司 | A kind of mechanical damper |
| CN211874715U (en) * | 2019-12-30 | 2020-11-06 | 中国石油天然气股份有限公司 | Leather cup type damping pumping-assisting whole barrel pump |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111561444A (en) * | 2020-05-11 | 2020-08-21 | 中国石油天然气股份有限公司 | Oil pump plunger and oil pump |
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