CN108644107A - Oil pump plunger piston and oil well pump - Google Patents
Oil pump plunger piston and oil well pump Download PDFInfo
- Publication number
- CN108644107A CN108644107A CN201810477696.5A CN201810477696A CN108644107A CN 108644107 A CN108644107 A CN 108644107A CN 201810477696 A CN201810477696 A CN 201810477696A CN 108644107 A CN108644107 A CN 108644107A
- Authority
- CN
- China
- Prior art keywords
- wear
- groove
- plunger piston
- abrasion
- oil 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
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
Abstract
The application discloses a kind of oil pump plunger piston and oil well pump, wherein the oil pump plunger piston can move back and forth in pump barrel；Wherein, the oil pump plunger piston includes：The main body that lengthwise extends；Abrasion-proof structure on the body outer wall；The surface energy of the abrasion-proof structure fits with the pump barrel and contacts；There is multiple grooves separately on the surface of the abrasion-proof structure；The groove is bonded with the pump barrel when of contacting on the surface of the abrasion-proof structure and forms storage space.Oil pump plunger piston and oil well pump provided by the present invention can improve the wear-resisting property of plunger, and then solve the problems, such as the fretting wear of oil well pump.
Description
Technical field
The invention belongs to oil recovery machiner fields, and in particular to a kind of oil pump plunger piston and oil well pump.
Background technology
Oil well pump is that the downhole hardware for downhole crude being given rise to ground is driven by pumping unit, and oil well pump is mainly by pumping
The part such as cylinder, plunger, inlet valve, dump valve forms.Relative to other mechanical lift devices, oil well pump has simple in structure, strong
The advantages that degree is high, service life is longer, while the needs of different oil well lifting rates can also be met, it is adaptable, therefore major
Oil field is widely used.
Many oil fields come into mid-later development phase, sand production in oil, High water cut, polymer injection exploitation, heavy crude heat extraction etc. because
For element so that the failures such as abrasion, leakage, burn into sand card of oil well pump become increasingly conspicuous, it is shorter and shorter that oil well pump is excused from a college course the phase, seriously affects
The raising of oil field development overall economic efficiency.
The problem of oil well pump, is mainly manifested in oil well pump fretting wear problem and protrudes increasingly, seriously affects the service life of pump
And pump detection period.This is because produced liquid in oil well water content increases, the reduction of well liquid lubricating ability, the friction system of pumping unit are caused
Number becomes larger, and abrasion is accelerated, and leakage increases, and pump efficiency reduces；Formation sand production getting worse causes to grind to oil pump plunger piston and pump barrel
A series of problems, such as damage, deformation.The appearance of these fretting wear problems will seriously affect the service life of oil well pump.
Invention content
In view of the deficiencies in the prior art, the object of the present invention is to provide a kind of oil pump plunger piston and oil well pumps, to improve column
The wear-resisting property of plug, and then solve the problems, such as the fretting wear of oil well pump.
The technical solution adopted by the present invention is as follows：
A kind of oil pump plunger piston, the oil pump plunger piston can move back and forth in pump barrel；Including：
The main body that lengthwise extends；
Abrasion-proof structure on the body outer wall；The surface energy of the abrasion-proof structure is affixed splice grafting with the pump barrel
It touches；There is multiple grooves separately on the surface of the abrasion-proof structure；The groove is on the surface of the abrasion-proof structure and institute
Storage space is formed when stating pump barrel fitting contact.
As preferred embodiment, the abrasion-proof structure include be removably secured be sheathed on it is wear-resisting on body outer wall
Set；The side surface flush on the surface of the wear-resistant sleeve and the main body.
As preferred embodiment, have what is extended along its length to crack on the wall of the wear-resistant sleeve；It is described wear-resisting
The cross section of set is open ring shape；The wear-resistant sleeve is bolted on plunger.
As preferred embodiment, the main body is provided along its length more than two wear-resistant sleeves；Multiple institutes
The length direction to crack along the main body for stating wear-resistant sleeve is staggered.
As preferred embodiment, the material of the wear-resistant sleeve is nickel-base alloy or ferrous alloy.
As preferred embodiment, the groove is molded using laser processing.
As preferred embodiment, on the abrasion-proof structure, circumferentially a circle arrangement forms one to multiple grooves
A groove ring element；The abrasion-proof structure has multigroup groove ring element along the main body length direction；Two neighboring institute
State 50 μm~3mm of groove ring element spacing.
As preferred embodiment, multiple groove ring elements form a groove tape cell；Two neighboring groove
Tape cell interval 10cm~50cm.
As preferred embodiment, the groove is circular groove；A diameter of 200 μm~3 ㎜ of the groove, it is described
The depth of groove is 100 μm~1 ㎜；Spacing between circumferentially adjacent two grooves is 50 μm~3 ㎜.
As preferred embodiment, the main body is provided along its length more than two wear-resistant sleeves；Each institute
It states wear-resistant sleeve and is equipped at least one groove tape cell.
A kind of oil well pump, including：
Pump barrel；
Oil pump plunger piston described in any embodiment as above.
Advantageous effect：
Oil pump plunger piston in the present invention, by being equipped with the reeded abrasion-proof structure of tool, also, the groove is described resistance to
The surface of mill structure is bonded the when of contacting with the pump barrel and forms storage space, and then the storage space can store one when pumping
Quantitative oil, the part oil can play certain lubricating action between pump barrel and plunger, reduce fretting wear, and then can be with
Effectively solve the problems, such as the fretting wear of oil well pump.
Meanwhile falling into the impurity such as the sand grains between plunger and pump barrel, can enter and being gathered in the storage space of groove,
Abrasion of the impurity such as sand grains to pump barrel inner wall and plunger is alleviated, while improving the wear-resisting property of plunger and pump barrel, reduces and rubs
It wears consumption, can further improve the fretting wear problem between plunger and pump barrel.
In addition, the multiple grooves being distributed on plunger can substantially increase the surface area of plunger, plunger has been accordingly increased
Heat dissipation area avoids plunger overheat aggravation mill to be conducive to radiate to amount of heat caused by piston reciprocation movement
Damage.
With reference to following description and accompanying drawings, only certain exemplary embodiments of this invention is disclosed in detail, specifies the original of the present invention
Reason can be in a manner of adopted.It should be understood that embodiments of the present invention are not so limited in range.In appended power
In the range of the spirit and terms that profit requires, embodiments of the present invention include many changes, modifications and are equal.
The feature for describing and/or showing for a kind of embodiment can be in a manner of same or similar one or more
It is used in a other embodiment, it is combined with the feature in other embodiment, or substitute the feature in other embodiment.
It should be emphasized that term "comprises/comprising" refers to the presence of feature, one integral piece, step or component when being used herein, but simultaneously
It is not excluded for the presence or additional of one or more other features, one integral piece, step or component.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those skilled in the art without having to pay creative labor, can be with root
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is that a kind of oil pump plunger piston structural schematic diagram is provided in embodiment of the present invention；
Fig. 2 is that a kind of oil pump plunger piston part-structure schematic diagram is provided in embodiment of the present invention.
Specific implementation mode
In order to make those skilled in the art more fully understand the technical solution in the present invention, below in conjunction with of the invention real
The attached drawing in example is applied, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
The every other embodiment that technical staff is obtained without making creative work, should all belong to guarantor of the present invention
The range of shield.
It should be noted that when element is referred to as " being set to " another element, it can be directly on another element
Or there may also be another elements placed in the middle.When an element is considered as " connection " another element, it can be straight
It is connected to another element in succession or may be simultaneously present another element placed in the middle.Term as used herein " vertically ", " water
It is flat ", "left", "right" and similar statement for illustrative purposes only, be not offered as being unique embodiment.
Unless otherwise defined, all of technologies and scientific terms used here by the article and belong to the technical field of the present invention
The normally understood meaning of technical staff is identical.Used term is intended merely to description tool in the description of the invention herein
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term as used herein "and/or" includes one or more
Any and all combinations of relevant Listed Items.
As shown in Figure 1 and Figure 2.A kind of oil pump plunger piston 100 is provided in embodiment of the present invention.The oil pump plunger piston 100
It can be moved back and forth in pump barrel.The oil pump plunger piston 100 includes：The main body 1 that lengthwise extends；On 1 outer wall of the main body
Abrasion-proof structure；The surface energy of the abrasion-proof structure fits with the pump barrel and contacts；Have on the surface of the abrasion-proof structure
Multiple grooves 3 separately；It is empty that the groove 3 forms storage when the surface of the abrasion-proof structure is bonded with the pump barrel and contacts
Between.
Oil pump plunger piston 100 in present embodiment, by equipped with the abrasion-proof structure with groove 3, also, the groove
3 are bonded with the pump barrel when of contacting on the surface of the abrasion-proof structure forms storage space, and then the storage space is being pumped
When can store a certain amount of oil, which can play certain lubricating action simultaneously to pump barrel and plunger 100, not only reduce
The fretting wear of plunger 100, additionally it is possible to reduce the frictional dissipation to pump barrel, and then can effectively solve the fretting wear of oil well pump
Problem.
Meanwhile the impurity such as the sand grains between plunger 100 and pump barrel are fallen into, it can enter and the storage for being gathered in groove 3 is empty
Between in, alleviate abrasion of the impurity such as sand grains to pump barrel inner wall and plunger 100, while improving the wearability of plunger 100 and pump barrel
Can, frictional dissipation is reduced, the fretting wear problem between plunger 100 and pump barrel can be further improved.
In addition, the multiple grooves 3 being distributed on plunger 100 can substantially increase the surface area of plunger 100, accordingly increase
The heat dissipation area of plunger 100, to be conducive to plunger 100 move back and forth caused by amount of heat radiate, avoid column
100 overheat unstable wear of plug.
In the present embodiment, main body 1 can be cylindrical structure, to be adapted with pump barrel shape.The upper end of main body 1 and
Lower end can be equipped with junction button, with other components such as connecting with pumping rod.Abrasion-proof structure is fixed in main body 1.Wherein, abrasion-proof structure
Can based on 1 part of itself, correspondingly, groove 3 can be directly opened on the side wall of main body 1.
In one embodiment, as shown in Figure 1 and Figure 2.The abrasion-proof structure includes being removably secured to be sheathed on outside main body 1
Wear-resistant sleeve 2 on wall.Wherein, the outer surface (being referred to as side surface) of wear-resistant sleeve 2 is contacted with pump barrel, participates in fretting wear.
After wear-resistant sleeve 2 follows main body 1 to move by fretting wear, wear-resistant sleeve 2 can be replaced, alleviate the mill of main body 1 to plunger 100
Damage, avoids replacing 100 structure of entire plunger, can effectively reduce cost.
Wherein, the side surface flush on the surface of the wear-resistant sleeve 2 and the main body 1.Specifically, the side of the main body 1
It can be equipped with and 2 matched annular groove 4 of the wear-resistant sleeve on wall.The wear-resistant sleeve 2 is sheathed on 4 position of annular groove, this
When, the side surface flush on the surface of the wear-resistant sleeve 2 and the main body 1.Meanwhile the annular groove 4 can also be to 2 shape of wear-resistant sleeve
At limit, axial direction (length direction) play of wear-resistant sleeve 2 along main body 1 is prevented.
For ease of the installation of wear-resistant sleeve 2.Have what is extended along its length to crack and (do not show on the wall of the wear-resistant sleeve 2
Go out).The cross section of the wear-resistant sleeve 2 is open ring shape.The wear-resistant sleeve 2 is bolted on plunger 100.Wherein,
Bolt can position wear-resistant sleeve 2, and wear-resistant sleeve 2 is prevented to be axially moveable and surround axial rotation.
Wear-resistant sleeve 2 is cracked by being equipped with, and when installing wear-resistant sleeve 2, wear-resistant sleeve 2 is inserted in from one end of main body 1 and will be opened
Seam can support greatly, continue to press on wear-resistant sleeve 2 until wear-resistant sleeve 2 enters 4 position of annular groove, wear-resistant sleeve 2 shrinks embedded annular recessed
In slot 4.Wherein, the embedded protrusion with the cooperation of cracking along 1 length direction of the main body can be equipped in annular groove 4.
When wear-resistant sleeve 2 is embedded in annular groove 4, embedded protrusion is located in described crack.Embedded protrusion can prevent 2 turns of wear-resistant sleeve
It is dynamic, and facilitate the positioning of wear-resistant sleeve 2 and subsequent installation positioning bolt.
As shown in Figure 1 and Figure 2.The main body 1 is provided along its length more than two wear-resistant sleeves 2.When a certain wear-resisting
Set 2 be worn destruction when, only the wear-resistant sleeve 2 need to be replaced, reduction use cost.Meanwhile multiple wear-resistant sleeves 2 can be more preferable
Ground is that entire plunger 100 forms protection.To avoid the crude oil leakage that will be adopted that cracks, pump efficiency is influenced, multiple wear-resistant sleeves 2
The length direction along the main body 1 that cracks is staggered.
To enhance the wear-resisting property of wear-resistant sleeve 2, improve service life.The material of the wear-resistant sleeve 2 is antifriction metal (AFM) or resistance to
Grind high molecular material.Specifically, the material of the wear-resistant sleeve 2 is nickel-base alloy or ferrous alloy.In the present embodiment, institute
Groove 3 is stated to be molded using laser processing.Wherein, groove 3 can directly be formed in main body by laser, can also pass through laser
The formation of wear-resistant sleeve 2.
To have preferable abrasion resistant effect, on the abrasion-proof structure, circumferentially a circle arrangement is formed multiple grooves 3
One groove ring element.The abrasion-proof structure has multigroup groove ring element along 1 length direction of the main body；It is two neighboring
50 μm~3mm of the groove ring element spacing.
Multiple groove ring elements form a groove tape cell；Two neighboring groove bands unit interval 10cm~
50cm.Wherein, the main body 1 is provided along its length more than two wear-resistant sleeves 2.Each wear-resistant sleeve 2 is equipped with
At least one groove tape cell.In embodiment as shown in Figure 1, there are one groove bands lists for tool on each wear-resistant sleeve 2
Member, each groove tape cell have 5 groove ring elements.Embodiment as shown in Figure 2, the part main body are equipped with 3 institutes
Groove tape cell (3 wear-resistant sleeves 2) is stated, each groove tape cell has 2 groove ring elements.
Wherein, the shape of groove 3 can there are many, such as cross section be polygon, circle, even irregular figure.For
Convenient for opening up, the groove 3 is circular groove 3, that is, the cross section of groove 3 is circle.Specifically, the diameter of the groove 3
Depth for 200 μm~3 ㎜, the groove 3 is 100 μm~1 ㎜；Circumferentially between (circumferencial direction) two neighboring groove 3
Spacing is 50 μm~3 ㎜.
Oil pump plunger piston 100 provided in present embodiment on the surface of wear mechanisms by processing minute recesses 3
Array, by the lubricating effect of the relative motion generation between wear mechanisms and pump barrel, along with works such as the lubrications of oil storage formation
With can effectively reduce friction under conditions of reciprocating motion, improve the abrasion resistance properties of plunger 100.
In conclusion the oil pump plunger piston 100 provided in present embodiment has the following advantages：
(1) wear-resistant sleeve 2 can participate in fretting wear when plunger 100 moves back and forth；After the abrasion of wear-resistant sleeve 2, it can dismantle
More renew wear-resistant sleeve 2, alleviate the body wear of plunger 100, to effectively save cost；
(2) groove 3 on plunger 100 can with oil in reserve, and then to the wear-resistant sleeve of pump barrel and plunger 100 2 constitute friction
Pair plays certain lubricating action, reduces fretting wear；
(3) falling into the sand grains of plunger 100 and pump barrel gap can be gathered in the memory space of groove 3, mitigate sand grains to pump
The abrasion of cylinder inner wall and plunger 100；
(4) groove 3 of array arrangement considerably increases the surface area of plunger 100, is conducive to generate largely to moving back and forth
Heat radiates.
A kind of oil well pump is also provided in embodiment of the present invention, including：Pump barrel；Any embodiment as above or embodiment institute
The oil pump plunger piston 100 stated.
Herein cited any digital value all include between lower limiting value to upper limit value with the lower value of an incremented and
The all values of upper value, there are the intervals of at least two units between any lower value and any much higher value.For example, such as
Fruit elaborates that the quantity of component or the value of process variable (such as temperature, pressure, time etc.) are from 1 to 90, preferably from 20
To 80, more preferably from 30 to 70, then purpose is arrived in order to illustrate also clearly listing such as 15 to 85,22 in the specification
68,43 to 51,30 to 32 is equivalent.For the value less than 1, suitably think that a unit is 0.0001,0.001,0.01,0.1.
These are only intended to the example clearly expressed, it is believed that the numerical value enumerated between minimum and peak is possible to
Combination is all expressly set forth in the specification in a similar manner.
Unless otherwise indicated, all ranges all include all numbers between endpoint and endpoint.It is used together with range
" about " or " approximation " be suitable for two endpoints of the range.Thus, " about 20 to 30 " are intended to covering " about 20 to about
30 ", including at least the endpoint indicated.
All articles and reference disclosed, including patent application and publication, for various purposes by quoting knot
Together in this.The term " substantially by ... constitute " for describing combination should include identified element, ingredient, component or step and reality
Other elements, ingredient, component or the step of the basic novel feature of the combination are not influenced in matter.Using term "comprising" or
" comprising " describes the combination of element here, ingredient, component or step it is also contemplated that substantially by these elements, ingredient, component
Or the embodiment that step is constituted.Here by using term " can with ", it is intended to illustrate that " can with " includes described any
Attribute is all optional.
Multiple element, ingredient, component or step can be provided by single integrated component, ingredient, component or step.Optionally
Ground, single integrated component, ingredient, component or step can be divided into multiple element, ingredient, component or the step of separation.It is used for
The open "a" or "an" for describing element, ingredient, component or step is not said to exclude other elements, ingredient, component
Or step.
It should be understood that above description is to illustrate rather than to be limited.By reading above-mentioned retouch
It states, many embodiments and many applications except the example provided all will be aobvious and easy for a person skilled in the art
See.Therefore, the range of this introduction should not be determined with reference to foregoing description, but should with reference to appended claims and this
The full scope of the equivalent that a little claims are possessed determines.For comprehensive purpose, all articles and with reference to including special
The disclosure of profit application and bulletin is all by reference to being incorporated herein.Theme disclosed herein is omitted in preceding claims
Any aspect is not intended to abandon the body matter, also should not be considered as inventor the theme is not thought of as it is disclosed
A part for subject matter.
Claims (11)
1. a kind of oil pump plunger piston, the oil pump plunger piston can move back and forth in pump barrel；It is characterised in that it includes：
The main body that lengthwise extends；
Abrasion-proof structure on the body outer wall；The surface energy of the abrasion-proof structure fits with the pump barrel and contacts；Institute
Stating has multiple grooves separately on the surface of abrasion-proof structure；The groove is on the surface of the abrasion-proof structure and the pump barrel
Storage space is formed when fitting contact.
2. oil pump plunger piston as described in claim 1, it is characterised in that：The abrasion-proof structure includes being removably secured to be arranged
In the wear-resistant sleeve on body outer wall；The side surface flush on the surface of the wear-resistant sleeve and the main body.
3. oil pump plunger piston as claimed in claim 2, it is characterised in that：Have on the wall of the wear-resistant sleeve and prolongs along its length
That stretches cracks；The cross section of the wear-resistant sleeve is open ring shape；The wear-resistant sleeve is bolted on plunger.
4. oil pump plunger piston as claimed in claim 3, it is characterised in that：The main body is provided along its length two or more
The wear-resistant sleeve；The length direction of multiple wear-resistant sleeves to crack along the main body is staggered.
5. oil pump plunger piston as claimed in claim 2, it is characterised in that：The material of the wear-resistant sleeve is nickel-base alloy or iron
Based alloy.
6. oil pump plunger piston as described in claim 1, it is characterised in that：The groove is molded using laser processing.
7. oil pump plunger piston as described in claim 1, it is characterised in that：On the abrasion-proof structure, multiple groove edges
Circumferential circle arrangement forms a groove ring element；The abrasion-proof structure has multigroup groove along the main body length direction
Ring element；50 μm~3mm of the two neighboring groove ring element spacing.
8. oil pump plunger piston as claimed in claim 7, it is characterised in that：Multiple groove ring elements form a groove bands
Unit；Two neighboring groove bands unit interval 10cm~50cm.
9. oil pump plunger piston as claimed in claim 7, it is characterised in that：The groove is circular groove；The groove it is straight
Diameter is 200 μm~3 ㎜, and the depth of the groove is 100 μm~1 ㎜；Spacing between circumferentially adjacent two grooves is 50 μm
~3 ㎜.
10. oil pump plunger piston as claimed in claim 8, it is characterised in that：The main body be provided along its length two with
The upper wear-resistant sleeve；Each wear-resistant sleeve is equipped at least one groove tape cell.
11. a kind of oil well pump, which is characterized in that including：
Pump barrel；
Oil pump plunger piston as described in claims 1 to 10 is any.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810477696.5A CN108644107A (en) | 2018-05-18 | 2018-05-18 | Oil pump plunger piston and oil well pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810477696.5A CN108644107A (en) | 2018-05-18 | 2018-05-18 | Oil pump plunger piston and oil well pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108644107A true CN108644107A (en) | 2018-10-12 |
Family
ID=63756656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810477696.5A Pending CN108644107A (en) | 2018-05-18 | 2018-05-18 | Oil pump plunger piston and oil well pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108644107A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109667753A (en) * | 2019-02-14 | 2019-04-23 | 吉林大学 | Blind hole type stores up husky oil pump plunger piston |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE460382C (en) * | 1928-05-25 | Hans Grade | Piston ring lock | |
| CN2416253Y (en) * | 2000-04-04 | 2001-01-24 | 胜利油田银星技术开发公司 | Wear-resisting plunger for oil-well pump |
| CN201574921U (en) * | 2009-12-26 | 2010-09-08 | 瑞安市巨盛机械有限公司 | Plunger of oil well pump |
| CN201858127U (en) * | 2010-03-26 | 2011-06-08 | 杨山 | Integral cylinder plunger pump |
| CN202690429U (en) * | 2012-06-15 | 2013-01-23 | 吉林大学 | Mud pump piston with pit form on surface |
| CN104196714A (en) * | 2014-09-05 | 2014-12-10 | 江苏宏业石油装备科技有限公司 | Dynamic sealing combined plunger assembly for oil field plunger oil well pump |
| 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 |
-
2018
- 2018-05-18 CN CN201810477696.5A patent/CN108644107A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE460382C (en) * | 1928-05-25 | Hans Grade | Piston ring lock | |
| CN2416253Y (en) * | 2000-04-04 | 2001-01-24 | 胜利油田银星技术开发公司 | Wear-resisting plunger for oil-well pump |
| CN201574921U (en) * | 2009-12-26 | 2010-09-08 | 瑞安市巨盛机械有限公司 | Plunger of oil well pump |
| CN201858127U (en) * | 2010-03-26 | 2011-06-08 | 杨山 | Integral cylinder plunger pump |
| CN202690429U (en) * | 2012-06-15 | 2013-01-23 | 吉林大学 | Mud pump piston with pit form on surface |
| CN104196714A (en) * | 2014-09-05 | 2014-12-10 | 江苏宏业石油装备科技有限公司 | Dynamic sealing combined plunger assembly for oil field plunger oil well pump |
| 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 |
Non-Patent Citations (1)
| Title |
|---|
| 宗明建等: "《汽车发动机机械系统检修》", 31 March 2018, 北京理工大学出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109667753A (en) * | 2019-02-14 | 2019-04-23 | 吉林大学 | Blind hole type stores up husky oil pump plunger piston |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR102056429B1 (en) | Oil scraper ring | |
| CN103244676A (en) | Split-type sealing ring | |
| CN102359492A (en) | Shaft sleeve | |
| CN104790876A (en) | Petroleum drilling oscillator | |
| CN108644107A (en) | Oil pump plunger piston and oil well pump | |
| CN103591012A (en) | Sealing device capable of being adjusted automatically | |
| CN106438679B (en) | Steam turbine bearing | |
| CN109667753A (en) | Blind hole type stores up husky oil pump plunger piston | |
| CN204458326U (en) | A kind of graded ceramic plunger | |
| CN209444551U (en) | The asymmetric husky wear-resisting oil pump plunger piston of groove-shaped storage | |
| CN105041504A (en) | Microstructure self-lubricating oil ring | |
| CN205841092U (en) | Split type wall-thickness screw motor such as grade and helicoid hydraulic motor thereof | |
| CN104963782B (en) | A kind of high-wearing feature cylinder sleeve of engine of imitative desert lizard epidermis | |
| CN103133535A (en) | Hydraulic plunger pump sliding bearing and machining method thereof | |
| CN204266944U (en) | A kind of ceramic materials oil pumping rod centering device | |
| CN202039791U (en) | Built-in fixed sucker rod centralizer | |
| CN202954968U (en) | Axially symmetrical curved surface rotary capacity changing pump | |
| CN107420296B (en) | Plunger for swash plate type axial plunger pump and swash plate type axial plunger pump | |
| CN207437339U (en) | A kind of wear-resisting oil-well pump of oil well of Surface Texture processing | |
| CN201031631Y (en) | Rotary corrector for sucker rod | |
| CN109611327A (en) | The asymmetric husky wear-resisting oil pump plunger piston of groove-shaped storage | |
| CN2218283Y (en) | Wearproof screw rod | |
| CN207377513U (en) | A kind of righting box cupling | |
| CN205297315U (en) | Screw rod is journal bearing for drilling tool | |
| CN201943610U (en) | Sucker rod wear-resisting idler wheel centering device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181012 |