CN204783588U - Novel oil -well pump is prevented grinding partially by hydrocushion - Google Patents
Novel oil -well pump is prevented grinding partially by hydrocushion Download PDFInfo
- Publication number
- CN204783588U CN204783588U CN201520405604.4U CN201520405604U CN204783588U CN 204783588 U CN204783588 U CN 204783588U CN 201520405604 U CN201520405604 U CN 201520405604U CN 204783588 U CN204783588 U CN 204783588U
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- CN
- China
- Prior art keywords
- pump
- oil
- plunger
- communicating passage
- well pump
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- 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.)
- Expired - Fee Related
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Abstract
The patent of the utility model relates to a novel oil -well pump is prevented grinding partially by hydrocushion, its key feature communicate the upper end of pump barrel and middle part through laying the intercommunication passageway at the pump barrel outer wall each other, and intercommunication passageway length is greater than plunger length, and intercommunication passageway upper end is located the pump barrel top. Through install the intercommunication passageway additional on the oil -well pump pump barrel, this oil -well pump can prevent the emergence of airlock phenomenon effectively, simultaneously through shifting to an earlier date the interior external pressure of ballast pump, not only can avoid can also alleviating rod string's unstability vibration because of the pump fills the discontented pump liquid hammer phenomenon that results in, reduces the inclined to one side mill between sucker rod and the oil pipe. This oil -well pump still has simple structure, pump technology is simple and convenient down, the stable performance reliable, long service life's characteristics.
Description
Technical field
The utility model belongs to oil field equipment field, is a kind of novel hydraulic balance Anti-sway wear-pump oil pump being widely used in all kinds of oil well.
Background technique
At present, oil well pump is normally made up of pump barrel, plunger, standing valve, traveling valve, drives sucker rod to realize to-and-fro motion by pumping unit horsehead.But due to well deliverability deficiency or the impact of entering pump gas, easily there is liquid hit phenomenon in plunger in descending process, thus cause rod string buckling deformation, strengthen the eccentric wear between sucker rod and oil pipe, also easily cause standing valve to damage simultaneously, shorten the standing valve life-span.For solving the problems referred to above that conventional oil well pump in use occurs, invent this kind of novel hydraulic Anti-sway wear-pump oil pump.
Summary of the invention
The utility model provides one and slows down side-abrasion of rod string, extends the novel hydraulic balance Anti-sway wear-pump oil pump of phase of being excused from a college course.This oil well pump also has the features such as simple, the lower pump technique of pump body structure is easy, stable and reliable for performance, long service life, eccentric abrasion prevention, anti-gas lock.
The technical solution of the utility model is realized by following measures: this oil well pump is made up of pump barrel and plunger, wherein, is interconnected in the upper end of pump barrel and middle part by laying communicating passage at pump barrel outer wall.
Described communicating passage length is greater than plungers length, and communicating passage upper end is positioned at pump barrel top.
Described plunger is when upper dead center, and its upper end is lower than communicating passage upper end, and plunger lower end is higher than communicating passage lower end.
According to the hydro-cushion Anti-sway wear-pump oil pump that such scheme makes, by the setting of communicating passage, when plunger upstroke is close to upper dead center, plunger base is higher than communicating passage lower end, plunger upper part is communicated with plunger lower pumping chamber, pump chamber and plunger upper part pressure reach balance rapidly, and in plunger upper part oil pipe, head of liquid is transferred to standing valve, and standing valve cuts out, therefore, plunger is from the descending process of upper dead center, and rod string starts descending by self gravitation, can not cause liquid hit phenomenon.Communicating passage lower end is by plunger seal subsequently, and pump barrel internal pressure raises, and traveling valve is opened, and pump barrel starts discharge opeing, completes an aspiration procedure.
In addition, due to the setting of communicating passage, when plunger arrives upper dead center, plunger upper part is communicated with plunger bottom, is subject to the impact of gravity, and in pump barrel, gas is by communicating passage moving on on pump in oil pipe, and liquid adds in pump barrel by communicating passage on pump, achieve the exchange of gas in plunger upper part oil liquid in pipe and plunger lower pumping chamber, thus reduce gases affect, prevent the appearance of gas lock phenomenon.This oil well pump also has rational in infrastructure, and simplicity of design is with low cost, easy to use, the advantages such as reliable performance.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model patent.
Embodiment
Referring to Fig. 1, the utility model oil well pump, combines primarily of pump barrel 1, plunger 2, communicating passage 3.Wherein pump barrel 1 upper end is connected with oil pipe, and pump barrel 1 lower end is connected with standing valve 5; Two communicating passage 3 are arranged at pump barrel 1 top, and communicating passage 3 length is greater than plunger 2 length; Plunger 2 is tubular structure, and its two ends are provided with traveling valve 4.
In pumping process, plunger 2 is reciprocating under the drive of sucker rod, when upstroke, plunger 2 is up, traveling valve 4 cuts out in pump with under the effect of pressure reduction on pump, plunger 2 lower pumping chamber space increases, pressure reduction is formed under pump with in pump, standing valve 5 is opened thereupon, fluid enters in pump chamber, when plunger 2 is up to upper dead center position, plunger 2 upper end is sitting at below communicating passage 3 upper end, now, be interconnected by communicating passage 3 in pump with on pump, pump intracavity gas enters in oil pipe by communicating passage 3, on pump, liquid enters pump barrel 1 and supplements space, pump chamber and pump upward pressure rapid equalisation, in oil pipe, head of liquid is transferred to standing valve 5, standing valve 5 cuts out rapidly, when down stroke, because plunger 2 top and the bottom pump chamber connection pressure is identical, rod string is descending smoothly by self gravitation, avoid the generation of pump liquid hit phenomenon, eliminate the unstability eccentric wear of roofbolt, when plunger 2 lower end moves to below communicating passage 3 lower end mouth, pump barrel and upper space are isolated, in pump chamber, hydraulic pressure rises gradually along with the descending of plunger 2, traveling valve 4 is opened under the effect of upper and lower pressure reduction, fluid is discharged in the oil pipe of plunger 2 top thereupon, when plunger 2 arrives lower dead centre, traveling valve 4 stops discharge opeing, by above-mentioned continuous print to-and-fro motion, realize oil pumping process.
By installing the setting of communicating passage 3 on oil pump sleeve additional, can in upstroke process, the gas-liquid realized in pump and on pump exchanges, the function of ballast pump external and internal pressure, the generation preventing gas lock can be reached, the more important thing is, by shifting to an earlier date ballast pump external and internal pressure, not only avoid because pump is not fully filled the generation of the liquid hit phenomenon caused, and alleviate the unstable Vibration of rod string, decrease the eccentric wear between sucker rod and oil pipe.
Claims (3)
1. a novel hydraulic balance Anti-sway wear-pump oil pump, this oil well pump is made up of pump barrel, plunger, communicating passage three part, it is characterized in that: install two communicating passage in pump barrel upper end and medium position.
2. novel hydraulic balance Anti-sway wear-pump oil pump according to claim 1, is characterized in that: described communicating passage length is greater than plungers length.
3. novel hydraulic balance Anti-sway wear-pump oil pump according to claim 1, is characterized in that: described plunger is when upper dead center, and its upper end is lower than communicating passage upper end, and plunger lower end is higher than communicating passage lower end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520405604.4U CN204783588U (en) | 2015-06-14 | 2015-06-14 | Novel oil -well pump is prevented grinding partially by hydrocushion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520405604.4U CN204783588U (en) | 2015-06-14 | 2015-06-14 | Novel oil -well pump is prevented grinding partially by hydrocushion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204783588U true CN204783588U (en) | 2015-11-18 |
Family
ID=54523648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520405604.4U Expired - Fee Related CN204783588U (en) | 2015-06-14 | 2015-06-14 | Novel oil -well pump is prevented grinding partially by hydrocushion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204783588U (en) |
-
2015
- 2015-06-14 CN CN201520405604.4U patent/CN204783588U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151118 Termination date: 20160614 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |