CN110273832A - A kind of piston type drawing liquid pump abrasionproof leak stoppage device - Google Patents
A kind of piston type drawing liquid pump abrasionproof leak stoppage device Download PDFInfo
- Publication number
- CN110273832A CN110273832A CN201910658400.4A CN201910658400A CN110273832A CN 110273832 A CN110273832 A CN 110273832A CN 201910658400 A CN201910658400 A CN 201910658400A CN 110273832 A CN110273832 A CN 110273832A
- Authority
- CN
- China
- Prior art keywords
- valve
- abrasionproof
- drawing liquid
- interconnecting piece
- liquid pump
- 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
- 239000007788 liquid Substances 0.000 title claims abstract description 56
- 239000004576 sand Substances 0.000 claims abstract description 22
- 210000003101 oviduct Anatomy 0.000 claims abstract description 21
- 238000007789 sealing Methods 0.000 claims abstract description 18
- 238000009434 installation Methods 0.000 claims description 3
- 230000010354 integration Effects 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 2
- 238000005299 abrasion Methods 0.000 abstract description 6
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 239000003208 petroleum Substances 0.000 abstract 1
- 239000003129 oil well Substances 0.000 description 24
- 238000005086 pumping Methods 0.000 description 14
- 238000005496 tempering Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 239000012535 impurity Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 210000003746 feather Anatomy 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000010349 pulsation Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000009510 drug design Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
The present invention relates to a kind of piston type drawing liquid pump abrasionproof leak stoppage devices, it is particularly suitable for petroleum pumpingh well, three parts of annular sand setting chamber that its structure is divided into tube structure portion and leakproof valve group portion and the two is constituted, wherein tube body, upper interconnecting piece, lower interconnecting piece collectively form tube structure portion；Valve cover, valve seat, sealing inclined-plane, valve ball guide rail, valve ball limit plate, diversion pipe, eddy flow oviduct and built-in helicla flute collectively constitute leakproof valve group portion；The abrasion of drawing liquid pump can be greatly decreased in apparatus of the present invention, prevent from leaking, and extend the service life of pump.
Description
Technical field
The present invention relates to liquid to lift field, in particular to a kind of piston type drawing liquid pump abrasionproof leak stoppage device.
Background technique
The tempering property of entrainment being located in deep-well or deeper container using the lifting of reciprocating-piston drawing liquid pump in the world at present is miscellaneous
In matter liquid process, especially using oil well oil recovery process as typical case, using there is bar piston type oil well pump oil recovery proportion
It is maximum.This sucker rod pump uses the built-in travelling valve of piston cylinder, fills fixed valve under pump barrel, drives sucker rod and therewith phase by pumping unit
Piston even pumps, so that travelling valve and the uninterrupted alternation switch of fixed valve, fluid lift in oil well to ground.
Fixed valve, the superiority and inferiority of travelling valve of oil well pump are affected to the function, performance and service life of oil well pump.In the prior art,
When fixing ball valve is closed etc., since the tempering property media such as sand in oil liquid are pumped into pump, be adhered to valve ball and valve seat
Irregular wear is caused on sealing surface, will lead to valve ball and the seal receptacle shut-in time lags, leakage rate is big, if viscosity of crude
Easily there is the problems such as valve ball closing delays or is not tight in big oil well, oil liquid leakage is serious, and pump efficiency is caused to reduce, and yield reduces.
On the other hand, in pumping process, the switch of fixed valve is asynchronous with piston up-down stroke, and there are certain hysteresis, produces
Raw a certain amount of pump leakage, also influences sucker rod pump pumping effect, pumping efficiency of oil pump reduction and pumpingh well pump detection period is caused to be shortened
Drop produces.
Summary of the invention
The present invention is to solve above-mentioned defect existing in the prior art, provides a kind of piston type drawing liquid pump abrasionproof leak-stopping dress
It sets, is installed on reciprocating rod pumping pump fixed valve bottom, efficiently solve fixed valve valve ball and sealing valve in the prior art
The problems such as seat abrasion aggravation, leakage increase, and pump efficiency is low, the lost of life, and oil and gas production is increased, improve production effect
Rate.
Technical scheme is as follows,
A kind of piston type drawing liquid pump abrasionproof leak stoppage device, including be rigidly connected under upper interconnecting piece and rigid connection and connected by tube body
The integrated tube structure portion that portion collectively forms, the upper interconnecting piece and the lower interconnecting piece inner surface are machined with pipe screw thread,
It is characterized in that by valve cover, valve seat, valve ball, valve ball guide rail, sand-falling port, inclined seal inclined-plane and diversion pipe, rotation
Oviduct and its built-in helicla flute are flowed, integrated leakproof valve group portion is collectively formed；By the whole vertical cloth in leakproof valve group portion
Set on tube structure portion inner cavity, table in the tube structure portion is rigidly connected in by eddy flow oviduct end circumferential direction
Face constitutes an annular sand setting chamber；The eddy flow oviduct in leakproof valve group portion is close to the lower interconnecting piece, the leakproof valve group
The valve ball limit plate in portion is close to the upper interconnecting piece, the tube structure portion, leakproof valve group portion, annular sand setting chamber three's axis
Line is overlapped and is in vertical vertical runs.
A kind of piston type drawing liquid pump abrasionproof leak stoppage device, it is characterised in that leakproof valve group portion is vertically vertically installed
Be laid in tube structure portion inner cavity, the big oral area of eddy flow oviduct under the tube structure portion interconnecting piece and with
The tube structure portion inner surface rigid seal connection, circumferential direction constitute the sand setting chamber.
The valve cover top rigid connection valve ball limit plate in leakproof valve group portion, inner surface are vertically rigid
Property connection lay at least three valve ball guide rails, inside bottom is rigidly connected the valve seat, exterior bottom rigidity
The diversion pipe is connected, inside bottom opens up the sand-falling port of at least three inclined layings and penetrates through；The diversion pipe
Bottom end is rigidly connected the small oral area of the eddy flow oviduct, the eddy flow loudspeaker pipe internal surface be machined with helically lay it is described
Helicla flute；The valve ball is placed in the cavity connected and composed by the valve cover, valve limit plate and valve seat piece rigid
It is interior, and can freely up and down play by the valve ball guide rail, the limit of valve ball limit plate；The valve seat is vertical greatly in top handle
The circular cone structure of vertical runs opens up through hole along its axis, and the sealing inclined-plane is laid in valve seat through hole top
Portion, integration processing.
Technical solution of the present invention is it is further characterized in that the valve seat is in the frustum of a cone of top handle vertical runs vertical greatly
Structure, feather edge is concordant with the valve seat conical surface laid in the frustum of a cone in its oral area of the sand-falling port of the inclined laying.
The valve ball limit plate vertically opens up at least three uniformly distributed through holes.
It the embodiment of the present invention and has the beneficial effect that:
1, by the design device of above structure, in use, interconnecting piece passes through screw thread on piston type drawing liquid pump abrasionproof leak stoppage device
It is connect with pump lower end, lower interconnecting piece is connected by screw thread with oil pipe.Pumpingh well in process of production, drives in upstroke pumping unit
Sucker rod and piston upwards, when lifting oil liquid, the travelling valve at the top of oil pump piston is closed, the fixed valve of oil-well pump bottom
And inventive piston formula drawing liquid pump abrasionproof leak stoppage device valve ball, due to oil pumping pump housing formation negative pressure, the oil liquid by rising is promoted
The angular sealing surface (check valve opening) on valve seat is left, on the one hand there are oil-well pump bottom fixed valve and piston types by untouched
It is intracavitary that clean oil liquid between drawing liquid pump abrasionproof leak stoppage device valve ball is lifted into oil well pump；On the other hand, from lower interconnecting piece
The oil liquid of sucking generates rotation effect by the helicla flute on the inside of eddy flow oviduct and imports from diversion pipe, the rotation of valve seat through hole
In the cavity be made of valve seat, valve cover, valve ball limit plate, the tempering property such as sand impurity is thrown toward ring due to centrifugal effect
Circumferential edges, and sink into the circumferential desilting chamber being made of tube structure portion and leakproof valve group portion, sand can be effectively reduced
Etc. the probability that tempering property medium enters oil well pump, valve group abrasion is reduced.
In process of production, when down stroke pumping unit drives sucker rod and piston moves downward, oil liquid is stopped oil well
It lifts, the travelling valve at the top of oil pump piston is opened, and the fixed valve and inventive piston formula drawing liquid pump abrasionproof of oil-well pump bottom are stopped
Leakage device valve ball is closed due to oil pump piston downlink since oil pumping pump housing forms positive pressure and spool (general technology) self weight
It closes, while being fallen after rise under the valve ball self weight double action of the oil liquid of pulsation sedimentation and the design device, with inclining on valve seat
Oblique sealing surface fitting (closed check valve) sealing, oil liquid is sealed up for safekeeping and is stopped in oil-well pump bottom fixed valve and piston type drawing liquid pump abrasionproof
Between leakage device valve ball, under this working condition, the tempering property such as sand in oil liquid medium can be sunk entrance due to self gravity
The desilting chamber being made of tube structure portion and leakproof valve group portion circumferential direction reduces the tempering property media such as sand and enters the several of oil well pump
Rate reduces valve group abrasion.Meanwhile seal up for safekeeping oil-well pump bottom fixed valve and piston type drawing liquid pump abrasionproof leak stoppage device valve ball it
Between oil liquid in sand when falling in valve seat ring week bottom, desilting chamber is also fallen into from inclination sand-falling port by self weight, to valve
Ball and angular sealing surface play a protective role, to extend its service life.
Attached drawing
Fig. 1: drawing liquid pump abrasionproof leak stoppage device valve ball leaves valve seat angular sealing surface and opens working condition sectional view；
Fig. 2: drawing liquid pump abrasionproof leak stoppage device valve ball is bonded closed state figure with valve seat angular sealing surface；
Fig. 3: drawing liquid pump abrasionproof leak stoppage device tube structure portion sectional view；
Fig. 4: drawing liquid pump abrasionproof leak stoppage device leakproof valve group portion sectional view.
Legend: 1, tube structure portion, 2, leakproof valve group portion, 3, annular desilting chamber, 12, tube body, 13, upper interconnecting piece, 14,
Lower interconnecting piece, 21, valve cover, 22, valve seat, 23, sealing inclined-plane, 24, sand-falling port, 25, valve ball, 26, valve ball guide rail,
27, valve ball limit plate, 28, diversion pipe, 29, eddy flow oviduct, 291, helicla flute.
It is described picture 1-4: a kind of piston type drawing liquid pump abrasionproof leak stoppage device, including by being connected in tube body (12) rigid connection
The integrated tube structure portion (1) that portion (13) and rigid connection lower interconnecting piece (14) collectively form, the upper interconnecting piece (13)
Pipe screw thread is machined with lower interconnecting piece (14) inner surface, it is characterised in that by valve cover (21), valve seat (22), valve ball
(25), valve ball guide rail (26), sand-falling port (24), inclined seal inclined-plane (23) and diversion pipe (28), eddy flow oviduct (29)
And its built-in helicla flute (291), collectively form integrated leakproof valve group portion (2)；It is whole vertical by leakproof valve group portion (2)
It is laid in tube structure portion (1) inner cavity, the cylinder is rigidly connected in by eddy flow oviduct (29) end circumferential direction
Structural portion (1) inner surface constitutes an annular sand setting chamber (3)；The eddy flow oviduct (29) in leakproof valve group portion (2) is close to institute
It states lower interconnecting piece (14), the valve ball limit plate (27) in leakproof valve group portion (2) is close to the upper interconnecting piece (13), the cylinder
Body structural portion (1), leakproof valve group portion (2), annular sand setting chamber (3) three's axis are overlapped and are in vertical vertical runs.
A kind of piston type drawing liquid pump abrasionproof leak stoppage device, it is characterised in that leakproof valve group portion (2) is vertical vertical
Installation is laid in tube structure portion (1) inner cavity, and the big oral area of the eddy flow oviduct (29) is close to the tube structure portion (1)
Under interconnecting piece (14) and connect with tube structure portion (1) the inner surface rigid seal, circumferential direction constitutes the sand setting chamber
(3).
The valve cover (21) the top rigid connection valve ball limit plate (27) in leakproof valve group portion (2),
Inner surface, which is vertically rigidly connected, lays at least three valve ball guide rails (26), the inside bottom rigid connection valve seat
(22), the exterior bottom rigid connection diversion pipe (28), inside bottom open up the described of at least three inclined layings
Sand-falling port (24) simultaneously penetrates through；The small oral area of diversion pipe (28) the bottom end rigid connection eddy flow oviduct (29), the rotation
Stream oviduct (29) inner surface is machined with the helicla flute (291) helically laid；The valve ball (25) is placed in by described
In the cavity that valve cover (21), valve limit plate (27) and valve seat (22) piece rigid connect and compose, and by the valve
Ball guide rail (26), valve ball limit plate (27) limit can freely up and down plays；The valve seat (22) is vertically hung down greatly in top handle
The circular cone structure directly laid opens up through hole along its axis, and the sealing inclined-plane (23) is laid in the valve seat (22) and passes through
Via top, integration processing.
Technical solution of the present invention is it is further characterized in that the valve seat (22) is in the circle of top handle vertical runs vertical greatly
Frustum structure, feather edge and the valve seat laid in the frustum of a cone in sand-falling port (24) of the inclined laying its oral area
(22) conical surface is concordant.
The valve ball limit plate (27) vertically opens up at least three uniformly distributed through holes.
It the embodiment of the present invention and has the beneficial effect that:
1, by the design device of above structure, in use, interconnecting piece (13) passes through on piston type drawing liquid pump abrasionproof leak stoppage device
Screw thread is connect with pump lower end, and lower interconnecting piece (14) is connected by screw thread with oil pipe.Pumpingh well in process of production, is taken out in upstroke
Oil machine drives sucker rod and piston upwards, and when lifting oil liquid, the travelling valve at the top of oil pump piston is closed, oil-well pump bottom
Fixed valve and inventive piston formula drawing liquid pump abrasionproof leak stoppage device valve ball (24) due to oil pumping pump housing formed negative pressure, it is top
The oil liquid risen lifts off the angular sealing surface (23) (check valve opening) on valve seat (22), on the one hand there is oil pumping for untouched
Clean oil liquid between pump bottom fixed valve and piston type drawing liquid pump abrasionproof leak stoppage device valve ball (22) is lifted into oil well pump
It is intracavitary；On the other hand, it is generated from the oil liquid of lower interconnecting piece (14) sucking by the helicla flute (291) on the inside of eddy flow oviduct (29)
Rotation effect is imported from diversion pipe (28), the rotation of valve seat (22) through hole and is limited by valve seat (22), valve cover (21), valve ball
Position plate (27) form cavity in, the tempering property such as sand impurity since centrifugal effect is thrown toward ring circumferential edges, and sink by
The circumferential desilting chamber (3) that tube structure portion (1) and leakproof valve group portion (2) are constituted can effectively reduce the tempering property such as sand Jie
Matter enters the probability of oil well pump, reduces valve group abrasion.
2, in process of production, when down stroke pumping unit drives sucker rod and piston moves downward, oil liquid is stopped oil well
It only lifts, the travelling valve at the top of oil pump piston is opened, the fixed valve and inventive piston formula drawing liquid pump abrasionproof of oil-well pump bottom
Leak stoppage device valve ball (24) is due to oil pump piston downlink, since oil pumping pump housing forms positive pressure and spool (general technology) certainly
Weight and closes, while being fallen after rise in the case where the oil liquid of pulsation sedimentation and the valve ball (21) of the design device are self-possessed double action, and it is all
Angular sealing surface (23) fitting (closed check valve) sealing on your seat (22), by oil liquid seal up for safekeeping oil-well pump bottom fixed valve with
Between piston type drawing liquid pump abrasionproof leak stoppage device valve ball (25), under this working condition, the tempering property medium such as sand in oil liquid
It can be sunk by the circumferential desilting chamber (3) constituted in tube structure portion (1) and leakproof valve group portion (2), be subtracted due to self gravity
The tempering property media such as few sand enter the probability of oil well pump, reduce valve group abrasion.Meanwhile seal up for safekeeping oil-well pump bottom fixed valve with
When the sand in oil liquid between piston type drawing liquid pump abrasionproof leak stoppage device valve ball (25) falls in valve seat (22) ring week bottom,
Desilting chamber (3) are also fallen into from inclination sand-falling port (24) by self weight, protection is played to valve ball (25) and angular sealing surface (23)
Effect, to extend its service life.
It is novel that the present invention has rational design, and structure is simple, securely and reliably, easy for installation, repeats practical.It is special using the design
A kind of piston type drawing liquid pump abrasionproof leak stoppage device of benefit, can prevent or mitigate the impurity such as sand in formation fluid, wax, dirt and be adhered fixed
Valve effectively prevent or mitigates have the fixed valve group of bar reciprocating oil-well pump because wearing poorly sealed oil liquid leakage phenomena, improves oil pumping
Pump efficiency is pumped, pumpingh well pump detection period is extended, production cost per tone oil is reduced, reaches effect of increasing production.Underground work is reduced simultaneously to make stratum
At injury.
Claims (5)
1. a kind of piston type drawing liquid pump abrasionproof leak stoppage device, including by interconnecting piece (13) in tube body (12) rigid connection and rigidly
Connect the integrated tube structure portion (1) that lower interconnecting piece (14) collectively form, the upper interconnecting piece (13) and the lower connection
Portion (14) inner surface is machined with pipe screw thread, it is characterised in that by valve cover (21), valve seat (22), valve ball (25), valve ball
Guide rail (26), sand-falling port (24), sealing inclined-plane (23) and diversion pipe (28), eddy flow oviduct (29) and its built-in helicla flute
(291), integrated leakproof valve group portion (2) is collectively formed；The cylinder is integrally vertically laid in by leakproof valve group portion (2)
Structural portion (1) inner cavity is rigidly connected in tube structure portion (1) inner surface by eddy flow oviduct (29) end circumferential direction
Constitute an annular sand setting chamber (3)；The close lower interconnecting piece (14) of the eddy flow oviduct (29) in leakproof valve group portion (2),
The valve ball limit plate (27) in leakproof valve group portion (2) is prevented close to the upper interconnecting piece (13), the tube structure portion (1)
It leaks valve group portion (2), annular sand setting chamber (3) three's axis is overlapped and is in vertical vertical runs.
2. a kind of piston type drawing liquid pump abrasionproof leak stoppage device according to claims 1, it is characterised in that the leakproof valve group
The vertical vertical installation in portion (2) is laid in tube structure portion (1) inner cavity, and the big oral area of the eddy flow oviduct (29) is close to described
It interconnecting piece (14) and is connect with tube structure portion (1) the inner surface rigid seal under tube structure portion (1), circumferential direction constitutes institute
State sand setting chamber (3).
3. a kind of piston type drawing liquid pump abrasionproof leak stoppage device according to claims 1, it is characterised in that the leakproof valve group
The valve cover (21) top in portion (2) is rigidly connected the valve ball limit plate (27), and inner surface is vertically rigidly connected cloth
If at least three valve ball guide rails (26), the inside bottom rigid connection valve seat (22), exterior bottom rigidity
It connects the diversion pipe (28), inside bottom opens up the sand-falling port (24) of at least three inclined layings and penetrates through；Institute
The small oral area of diversion pipe (28) the bottom end rigid connection eddy flow oviduct (29) is stated, eddy flow oviduct (29) inner surface adds
Work has the helicla flute (291) helically laid；The valve ball (25) is placed in by the valve cover (21), valve limit plate
(27) it in the cavity connected and composed with valve seat (22) piece rigid, and is limited by the valve ball guide rail (26), valve ball
Plate (27) limit can freely up and down play；Circular cone structure of the valve seat (22) in top handle vertical runs vertical greatly, edge
Its axis opens up through hole, and the sealing inclined-plane (23) is laid at the top of the valve seat (22) through hole, integration processing.
4. any one piston type drawing liquid pump abrasionproof leak stoppage device according to claims 3, it is characterized in that the valve seat
It (22) is in the circular cone structure for pushing up handle vertical runs vertical greatly, bottom edge in sand-falling port (24) of the inclined laying its oral area
Edge is concordant with the valve seat (22) conical surface laid in the frustum of a cone.
5. any one piston type drawing liquid pump abrasionproof leak stoppage device according to claims 1 or 3, it is characterized in that the valve
Ball limit plate (27) vertically opens up at least three uniformly distributed through holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910658400.4A CN110273832A (en) | 2019-07-21 | 2019-07-21 | A kind of piston type drawing liquid pump abrasionproof leak stoppage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910658400.4A CN110273832A (en) | 2019-07-21 | 2019-07-21 | A kind of piston type drawing liquid pump abrasionproof leak stoppage device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110273832A true CN110273832A (en) | 2019-09-24 |
Family
ID=67965021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910658400.4A Pending CN110273832A (en) | 2019-07-21 | 2019-07-21 | A kind of piston type drawing liquid pump abrasionproof leak stoppage device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110273832A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113027737A (en) * | 2019-12-25 | 2021-06-25 | 中国石油天然气股份有限公司 | Oil pumping well plunger pump |
| CN114763844A (en) * | 2021-01-15 | 2022-07-19 | 玛珂系统分析和开发有限公司 | Metering valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5178184A (en) * | 1991-08-12 | 1993-01-12 | Skillman Milton M | Pump valve apparatus |
| CN201137562Y (en) * | 2007-11-06 | 2008-10-22 | 天津市永旭石油机械制造有限公司 | Swirling self-cleaning large flow passage sand-proof oil-well pump |
| CN201358910Y (en) * | 2009-03-04 | 2009-12-09 | 杨之光 | Oil pumping well W flow type deep well pump fixed valve uniflow valve |
| CN201705656U (en) * | 2010-01-14 | 2011-01-12 | 中国石油天然气股份有限公司 | Righting-oriented double-ball fixed valve |
| CN203035534U (en) * | 2013-01-25 | 2013-07-03 | 刘凤 | Leakage-proof fixing valve |
| CN204041427U (en) * | 2014-07-14 | 2014-12-24 | 中国石油天然气股份有限公司 | A kind of standing valve and standing valve holder assembly thereof |
| CN205841165U (en) * | 2016-07-15 | 2016-12-28 | 山东威马泵业股份有限公司 | Coal bed gas well Special vacuum oil well pump |
| CN210949094U (en) * | 2019-07-21 | 2020-07-07 | 刘凤 | Piston type liquid pump anti-abrasion and leakage-stopping device |
-
2019
- 2019-07-21 CN CN201910658400.4A patent/CN110273832A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5178184A (en) * | 1991-08-12 | 1993-01-12 | Skillman Milton M | Pump valve apparatus |
| CN201137562Y (en) * | 2007-11-06 | 2008-10-22 | 天津市永旭石油机械制造有限公司 | Swirling self-cleaning large flow passage sand-proof oil-well pump |
| CN201358910Y (en) * | 2009-03-04 | 2009-12-09 | 杨之光 | Oil pumping well W flow type deep well pump fixed valve uniflow valve |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113027737A (en) * | 2019-12-25 | 2021-06-25 | 中国石油天然气股份有限公司 | Oil pumping well plunger pump |
| CN113027737B (en) * | 2019-12-25 | 2023-04-07 | 中国石油天然气股份有限公司 | Oil pumping well plunger pump |
| CN114763844A (en) * | 2021-01-15 | 2022-07-19 | 玛珂系统分析和开发有限公司 | Metering valve |
| CN114763844B (en) * | 2021-01-15 | 2024-06-11 | 玛珂系统分析和开发有限公司 | Metering valve |
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