CN201258851Y - Anti-pricked oil pump - Google Patents
Anti-pricked oil pump Download PDFInfo
- Publication number
- CN201258851Y CN201258851Y CNU2008202082491U CN200820208249U CN201258851Y CN 201258851 Y CN201258851 Y CN 201258851Y CN U2008202082491 U CNU2008202082491 U CN U2008202082491U CN 200820208249 U CN200820208249 U CN 200820208249U CN 201258851 Y CN201258851 Y CN 201258851Y
- Authority
- CN
- China
- Prior art keywords
- valve
- ball seat
- valve ball
- oil well
- lower joint
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to an oil well pump, in particular to an anti-leakage oil well pump, comprising a pump cylinder joint, a pump cylinder, a plunger assembly and a fixed valve assembly. A valve ball seat is fixed at the inner part of a valve cover by the valve cover and a valve lower joint; a sealing ring is fixedly clamped by the upper end of the valve ball seat and the valve cover; an inner cavity of the valve lower joint is conical; and the upper end of the valve lower joint is matched with the valve ball seat. The sealing ring is arranged at the upper end of the valve ball seat, thus effectively relieving the impact to the upper end part of the valve ball seat. The valve lower joint is designed to be conical, is matched with the valve ball seat, can avoid sudden change of flow area and also can avoid the direct impact to the combined part of the valve ball seat and the valve lower joint. Therefore, the utility model can effectively prevent the piercing-caused leakage.
Description
Technical field:
The utility model relates to a kind of oil well pump, relates in particular to a kind of oil well pump of anti-pricked.
Background technique:
At present, the many oil fields of China have entered the later stage exploitation, in order to improve recovery rate, often take oil well acidation, injection of polymer, and injection microorganism etc. increases oily measure, makes underground hole condition more become complicated.Add and contain sand in the well liquid and other impurity is more, make the oil well pump premature failure.Common faults has a strong impact on the ordinary production of oil recovery factory for valve ball seat thorn leaks, and has increased operating cost greatly.
Summary of the invention:
The utility model is exactly the oil well pump that a kind of anti-pricked will be provided.
The technological scheme that the utility model provides is:
The anti-pricked oil well pump comprises pump barrel joint, pump barrel, plunger piston assembly and standing valve general name, and the valve ball seat is fixed on valve cover inside by valve cover and valve lower contact; Valve ball seat upper end and valve cover fixed clamp seal ring; Valve lower contact inner chamber is cone-shaped, upper end and valve ball seat coupling.
In conventional oil well pump, owing to be subjected to spatial constraints, the valve seat internal diameter size has been received considerable restraint.
With Φ 32---Φ 57 oil well pump valve seats are example, and its internal diameter size is 30mm, and the valve ball diameter is 38mm.The valve lower contact minimum diameter supporting with valve ball is 40mm.This just makes that in oil well pump pumping process, very big damming caused at standing valve ball seat position, and Flow area is by original 1256mm
2Become 706.5mm
2The abrupt change of Flow area, make the sealed at both ends face of valve ball seat be subjected to bigger impact force, and oil well pump in the course of the work, the power that is subjected to is alternate load, in view of above reason makes that two end face area up and down at standing valve ball seat position are area of stress concentration, under down-hole acid medium and pressure, two end face area up and down of valve ball seat cause that easily thorn leaks.
The utility model is provided with seal ring in valve ball seat upper end surface can effectively alleviate the impact of liquid to valve ball seat upper end face part.The utility model is designed to the valve lower contact cone-shaped, and is complementary with the valve ball seat, can avoid the Flow area abrupt change, avoids the direct impact of liquid to valve ball seat and valve lower contact connecting part.So the utility model can effectively prevent to sting generation leakage.
Description of drawings
Fig. 1 is a structural representation of the present utility model
1 pump barrel joint, 2 pump barrels, 3 plunger piston assembly, 4 standing valve assemblies, 5 valve balls
6 seal rings, 7 valve ball seats, 8 valve lower contacts, 9 valve covers
Specific embodiment
In the present embodiment, comprise pump barrel joint, pump barrel, plunger piston assembly and fixation assembly.
The valve cover is arranged in the pump barrel, connect the valve lower contact below the valve cover, clamping is provided with seal ring and valve ball seat between valve cover and the valve lower contact, seal ring is above the valve ball seat, valve lower contact inner chamber is cone-shaped, the top internal diameter is littler than bottom internal diameter, and the internal diameter of upper end equates with the internal diameter of valve ball seat.
Claims (2)
1, anti-pricked oil well pump comprises pump barrel joint, pump barrel, plunger piston assembly and standing valve general name, it is characterized in that the valve ball seat is fixed on valve cover inside by valve cover and valve lower contact; Valve ball seat upper end and valve cover fixed clamp seal ring; Valve lower contact inner chamber is cone-shaped, upper end and valve ball seat coupling.
According to the described anti-pricked oil well pump of claim 1, it is characterized in that 2, the internal diameter of valve lower contact upper end equates with the internal diameter of valve ball seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202082491U CN201258851Y (en) | 2008-09-04 | 2008-09-04 | Anti-pricked oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202082491U CN201258851Y (en) | 2008-09-04 | 2008-09-04 | Anti-pricked oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201258851Y true CN201258851Y (en) | 2009-06-17 |
Family
ID=40773085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202082491U Expired - Fee Related CN201258851Y (en) | 2008-09-04 | 2008-09-04 | Anti-pricked oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201258851Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103306953A (en) * | 2012-03-09 | 2013-09-18 | 长江大学 | Swabbing oil recovery pump with double fixed valves |
-
2008
- 2008-09-04 CN CNU2008202082491U patent/CN201258851Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103306953A (en) * | 2012-03-09 | 2013-09-18 | 长江大学 | Swabbing oil recovery pump with double fixed valves |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090617 Termination date: 20110904 |