CN2849229Y - Eccentrically arranged valve type oil pumping pump - Google Patents
Eccentrically arranged valve type oil pumping pump Download PDFInfo
- Publication number
- CN2849229Y CN2849229Y CN 200520135895 CN200520135895U CN2849229Y CN 2849229 Y CN2849229 Y CN 2849229Y CN 200520135895 CN200520135895 CN 200520135895 CN 200520135895 U CN200520135895 U CN 200520135895U CN 2849229 Y CN2849229 Y CN 2849229Y
- Authority
- CN
- China
- Prior art keywords
- valve
- pump barrel
- oil
- pump
- outlet valve
- 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 - Lifetime
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Abstract
The utility model relates to an eccentrically arranged valve type oil pump which is composed of an upper pump barrel, an upper plunger, an oil outlet valve set, an aligning device, an oil inlet valve, a lower pump barrel and a lower plunger. When a sucker rod moves down, pressure out of the pump is low, high pressure bearing area on the upper end surface of the upper plunger is larger than that on the lower end surface, and under the action of area difference and pressure difference, downward feedback force is generated to help the sucker rod to move down, so that drag friction from thick oil to the sucker rod is overcome and the regular production of a thick oil well is guaranteed. The shaft lines of a screw thread through which the upper part of a valve body in the oil inlet valve is connected with the upper pump barrel and a screw thread through which the lower part is connected with the lower pump barrel are not coincident with the shaft line of a cylinder body on the outer surface of the valve body. The valve body with an eccentric structure increases the diameter of a valve ball to ensure the valve ball works flexibly in a thick oil well, the closure is prompt and the reliability of a thick oil pump is enhanced. Restoring springs are installed in the oil outlet valve set and the oil inlet valve, so that the oil outlet valve set and the oil inlet valve can also work normally in an inclined well.
Description
One, technical field
The utility model is the Special subsurface pump that the oil-field thick-oil pumping well is used, particularly a kind of eccentrically arranged valve formula oil well pump.Belong to engineering goods.
Two, background technique
The oiling valve of the 89201356.7 hydraulic pressure feedback thick oil pump of prior art adopts loop configuration, be distributed on the valve body by a plurality of valve balls, valve seat, malfunctioning if any a valve ball, valve seat, hydraulic pressure feedback thick oil pump just can not be pumped, and the valve ball diameter of the oiling valve of this structure is little, it is ineffective to be easy to work in viscous crude, causes that oil well is not fuel-displaced.
Three, summary of the invention
The objective of the invention is to design a kind of eccentrically arranged valve formula oil well pump, valve body is an eccentric structure, has increased the valve ball diameter, and it is worked in thick oil well flexibly, closes immediately, improves the reliability of oil well pump.
The utility model is achieved in that by last pump barrel, upper plug, outlet valve group, pump barrel, lower plunger are formed down, upper plug is in the pump barrel, the upper plug bottom connects the outlet valve group, outlet valve group bottom is a lower plunger, last pump barrel bottom connects oiling valve top, and the oiling valve bottom connects pump barrel top down.The axis of thread that screw thread that valve body top connects with last pump barrel in the oiling valve and bottom connect with following pump barrel does not overlap with the valve outer surface cylinder axis.Returnning spring is installed in outlet valve group, the oiling valve.Between outlet valve group, the lower plunger aligning device is arranged.
Upper plug top connects sucker rod, and when the pumping unit upstroke of ground, pumping unit drives that sucker rod, upper plug, outlet valve group, aligning device, lower plunger are up, and the outlet valve group is closed, and the oil suction chamber volume increases, and pressure descends, and oiling valve is opened.When the pumping unit down stroke of ground, sucker rod, upper plug, outlet valve group, aligning device, lower plunger are descending, and the oil suction chamber volume reduces, and pressure rises, and oiling valve cuts out, and the outlet valve group is opened.At this moment the pump pressure outside is low, the area that high pressure is born in the upper plug upper-end surface bears the area of high pressure greater than the lower end surface, therefore, under area difference and pressure difference effect, produce a downward power, be called feedback force, this feedback force helps sucker rod descending, thereby overcomes the surface friction drag of viscous crude to sucker rod, makes thick oil well energy ordinary production.
The beneficial effects of the utility model are: when sucker rod is descending, the pump pressure outside is low, the area that high pressure is born in the upper plug upper-end surface bears the area of high pressure greater than the lower end surface, under area difference and pressure difference effect, produce a downward feedback force, this feedback force helps sucker rod descending, thereby overcome the surface friction drag of viscous crude, make thick oil well energy ordinary production sucker rod.Valve body is an eccentric structure, has increased the valve ball diameter, and it is worked in thick oil well flexibly, closes immediately, has improved the reliability of thick oil pump.In outlet valve group, the oiling valve Returnning spring has been installed, has been made it also can proper functioning in inclined shaft.
Four, description of drawings
Attached is the utility model embodiment's erection drawing.
Five, embodiment
Below in conjunction with accompanying drawing the utility model embodiment is described.
Among the figure: the 1st, last pump barrel, the 2nd, upper plug, the 3rd, outlet valve group, the 4th, aligning device, the 5th, oiling valve, the 6th, following pump barrel, the 7th, lower plunger.Be that the utility model is by last pump barrel 1, upper plug 2, outlet valve group 3, aligning device 4, oiling valve 5, following pump barrel 6, lower plunger 7.Upper plug 2 is in the pump barrel 1, and upper plug 2 bottoms connect outlet valve group 3, and outlet valve group 3 bottoms connect aligning device 4, and aligning device 4 bottoms connect lower plunger 7.Last pump barrel 1 bottom connects oiling valve 5 tops, and oiling valve 5 bottoms connect pump barrel 6 tops down.The axis of thread that screw thread that valve body top connects with last pump barrel 1 in the oiling valve 5 and bottom connect with following pump barrel 6 does not overlap with the valve outer surface cylinder axis.Lower plunger 7 is in the following pump barrel 6.In outlet valve group 3, the oiling valve 5 Returnning spring is installed.
Upper plug 2 tops connect sucker rod, and when the pumping unit upstroke of ground, pumping unit drives that sucker rod, upper plug 2, outlet valve group 3, aligning device 4, lower plunger 7 are up, and outlet valve group 3 is closed, and the oil suction chamber volume increases, and pressure descends, and oiling valve 5 is opened.When the pumping unit down stroke of ground, sucker rod, upper plug 2, outlet valve group 3, aligning device 4, lower plunger 7 are descending, and the oil suction chamber volume reduces, and pressure rises, and oiling valve 5 cuts out, and outlet valve group 3 is opened.At this moment the pump pressure outside is low, the area that high pressure is born in upper plug 2 upper-end surfaces bears the area of high pressure greater than the lower end surface, therefore, under area difference and pressure difference effect, produce a downward power, be called feedback force, this feedback force helps sucker rod descending, thereby overcomes the surface friction drag of viscous crude to sucker rod, makes thick oil well energy ordinary production.
Claims (3)
1, a kind of eccentrically arranged valve formula oil well pump, by last pump barrel (1), upper plug (2), outlet valve group (3), following pump barrel (6), lower plunger (7) is formed, it is characterized in that: upper plug (2) is in the pump barrel (1), upper plug (2) bottom connects outlet valve group (3), outlet valve group (3) bottom is lower plunger (7), last pump barrel (1) bottom connects oiling valve (5) top, oiling valve (5) bottom connects pump barrel (6) top down, and the axis of thread that screw thread that valve body top connects with last pump barrel (1) in the oiling valve (5) and bottom connect with following pump barrel (6) does not overlap with the valve outer surface cylinder axis.
2, eccentrically arranged valve formula oil well pump according to claim 1 is characterized in that: Returnning spring is installed in outlet valve group (3), the oiling valve (5).
3, eccentrically arranged valve formula oil well pump according to claim 1 is characterized in that: between outlet valve group (3), the lower plunger (7) aligning device (4) is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520135895 CN2849229Y (en) | 2005-11-13 | 2005-11-13 | Eccentrically arranged valve type oil pumping pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520135895 CN2849229Y (en) | 2005-11-13 | 2005-11-13 | Eccentrically arranged valve type oil pumping pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2849229Y true CN2849229Y (en) | 2006-12-20 |
Family
ID=37521713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520135895 Expired - Lifetime CN2849229Y (en) | 2005-11-13 | 2005-11-13 | Eccentrically arranged valve type oil pumping pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2849229Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949277A (en) * | 2010-08-21 | 2011-01-19 | 中国石油化工股份有限公司 | Oil extraction method of weight adding under pump and oil well pump with weight adding under pump |
| CN103277071A (en) * | 2013-06-25 | 2013-09-04 | 大庆北油工程技术服务有限公司 | Hydraulic feedback device of oil pump |
| CN103775045A (en) * | 2013-09-13 | 2014-05-07 | 中国石油天然气股份有限公司 | Thickened oil thermal production well immovable string separate injection and commingled production method and device |
| CN106438306A (en) * | 2016-11-24 | 2017-02-22 | 东北石油大学 | Alternating load anti-eccentric-wear pump |
-
2005
- 2005-11-13 CN CN 200520135895 patent/CN2849229Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949277A (en) * | 2010-08-21 | 2011-01-19 | 中国石油化工股份有限公司 | Oil extraction method of weight adding under pump and oil well pump with weight adding under pump |
| CN101949277B (en) * | 2010-08-21 | 2013-07-03 | 中国石油化工股份有限公司 | Oil extraction method of weight adding under pump and oil well pump with weight adding under pump |
| CN103277071A (en) * | 2013-06-25 | 2013-09-04 | 大庆北油工程技术服务有限公司 | Hydraulic feedback device of oil pump |
| CN103775045A (en) * | 2013-09-13 | 2014-05-07 | 中国石油天然气股份有限公司 | Thickened oil thermal production well immovable string separate injection and commingled production method and device |
| CN106438306A (en) * | 2016-11-24 | 2017-02-22 | 东北石油大学 | Alternating load anti-eccentric-wear pump |
| CN106438306B (en) * | 2016-11-24 | 2018-05-22 | 东北石油大学 | Alternating load eccentric abrasion prevention pumps |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20061220 |
|
| EXPY | Termination of patent right or utility model |