CN2173871Y - Bidirectional symmetric single screw oil pump - Google Patents
Bidirectional symmetric single screw oil pump Download PDFInfo
- Publication number
- CN2173871Y CN2173871Y CN 93220526 CN93220526U CN2173871Y CN 2173871 Y CN2173871 Y CN 2173871Y CN 93220526 CN93220526 CN 93220526 CN 93220526 U CN93220526 U CN 93220526U CN 2173871 Y CN2173871 Y CN 2173871Y
- Authority
- CN
- China
- Prior art keywords
- oil
- lining
- pump
- screw rod
- steel sleeve
- 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
Links
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to an underground oil pumping device for oil exploitation. Two screws with reverse rotary directions in a lining body are connected with each other through a flexible axle; oil flows into an upper screw and a lower screw in the cavity of the lining body and is supercharged, and then, the oil flows towards reverse direction. Afterwards, the oil is collected and enters an oil pipe through a pipeline between the lining body and an outer sleeve. The utility model can solve the equilibrium problem of the axial force of a screw pump, reduce the bearing load, increase the long lifetime of a bearing, and simultaneously, enlarge the discharge capacity of a pump and reduce the vibration of the pump. The utility model decreases the radial dimension and is suitable for the requirement of oil extraction with larger discharge capacity using a small sleeve pipe. The utility model can be used for the exploitation of crude oil, particularly thick oil, oil containing gas, oil containing sand and high-coagulate oil.
Description
The utility model relates to petroleum production down-hole pumping unit technical field.
Existing progressive cavity pump device, no matter be ground surface driving or the down-hole drives, all exist the problem that axial force is difficult to balance.In operation process, because the effect of screw pump axial force for the screw pump of ground surface driving, usually causes screw rotor and pumping rod disengaging; Drive for the down-hole, then strengthened the stressed of bottom carrier bearing, shortened the life-span of bearing; Thereby cause the repetition operation, influenced ordinary production.Existing progressive cavity pump device also exists a problem that discharge capacity is little, and in order to increase discharge capacity, the someone adopts the way of the rotating speed that improves pump.But high rotating speed has reduced the life-span of the lining stator of pump.Adopt one way to strengthen the way of helical pitch, certain difficulty is arranged again in the processing.Adopt the binary screw rod then to strengthen pump footpath size, the existing well cylinder size does not allow, and is being in transmission connection and the oil field all is restricted in using.
The purpose of this utility model provides a kind of new screw oil-well pump device.Realize the screw pump axial force balance, reduce bearing load, improve bearing life, reduce the vibration of pump, under the slow-speed of revolution, increase pump delivery simultaneously, prolong the working life of pump.
The purpose of this utility model is to realize like this, couple together by the screw rod of scratching in axle screw rod-lining body that two rotation directions is opposite, after making oil flow to two interior difference of screw rod-lining fluid chamber supercharging up and down, opposite up and down direction flows, then, enter oil pipe after compiling by the passage between lining body and the overcoat.
The bi-directional symmetrical single screw pump has solved screw pump balance of axial force problem, has reduced bearing load, has improved the life-span of bearing, has increased pump delivery simultaneously, has reduced the vibration of pump.Radial dimension has been dwindled in this design greatly, the requirement that needs big discharge capacity to recover the oil applicable to the small casing well.Processing technology is simple, and cost is low.This pump can adopt the mode of ground surface driving or underground driving, and is applied widely, overcome a series of shortcomings of existing progressive cavity pump, is the ideal tools that improves well recovery amount and lifting rate.Can be widely used in crude oil exploitation, especially at heavy crude producing, gassiness, contain sand and high when coagulating oil, its distinctive feature is more arranged.Also can be used for inclined shaft, directional well etc.
Fig. 1. bi-directional symmetrical single screw pump structural representation.
Fig. 2. bi-directional symmetrical single screw pump structure A-A sectional view.
Wherein: (1) transmission shaft; (2) go up special-shaped joint; (3) go up screw rod; (4) go up lining; (5) go up outer steel sleeve; (6) scratch axle; (7) feed flow is communicated with joint; (8) screw rod under; (9) lining under; (10) outer steel sleeve under; (11) pump block connecting vessels; (12) oil inlet hole; (13) port hole; (14) passage.
Further specify the utility model below in conjunction with drawings and Examples.
Embodiment one: the inside thread by feed flow connection joint 7 between last lining 4 and the following lining 9 is connected and fixed, the outside that is communicated with joint 7 at feed flow is fixed with outer steel sleeve 5 and following outer steel sleeve 10, upwards there are three oil inlet holes 12 in the footpath that is communicated with joint 7 at feed flow, on it is axial, have three oil flow channel holes 13, be not communicated with mutually between oil inlet hole 12 and the oil flow channel hole 13, the upper end of last lining 4 and last outer steel sleeve 5 is fixed on the special-shaped joint 2, the upper end of going up special-shaped joint links to each other with oil pipe, transmission shaft 1 passes special-shaped joint 2 fixedlys connected with last screw rod 3, the lower end of following lining 9 and following outer steel sleeve 10 is fixed on the pump block connecting vessels 11, going up in special-shaped joint 2 and the pump block connecting vessels 11 has cavity and through hole, is communicated with the chamber and the passage 14 of lining.Fluid sucks screw rod-lining fluid chamber up and down respectively by the inlet of the feed flow connection joint 7 at middle part, moves up and down respectively after revolving supercharging.Following screw rod promotes fluid downwards, the pump block connecting vessels 11 of fluid after the supercharging by the bottom is along moving on the annular pass 14 of outer steel sleeve, in the arrival special-shaped joint 2 places with enter oil pipe after fluid that upper screw upwards pushes away mixes, constantly the fluid of supercharging is transported to ground by oil pipe always.
Embodiment two: will descend screw rod 9 to be connected with oil-submersible motor and drive oil extraction.
Claims (4)
1, a kind of single screw pump, form by oil inlet hole (12), screw rod, lining and outer steel sleeve, it is characterized in that: couple together by the screw rod of scratching in axle (6) screw rod-lining body that two rotation directions is opposite, having fuel feeding to flow to the passage (14) that flows between lining and the outer steel sleeve.
2, single screw pump according to claim 1 is characterized in that: two screw rod-lining bodies are with axial symmetric arrangement.
3, single screw pump according to claim 1, it is characterized in that: the inside thread by feed flow connection joint (7) between last lining (4) and the following lining (9) is connected and fixed, the outside that is communicated with joint (7) at feed flow is fixed with outer steel sleeve (5) and following outer steel sleeve (10), upwards there is an above oil inlet hole (12) in the footpath that is communicated with joint (7) at feed flow, on it is axial, have an above oil flow channel hole (13), be not communicated with mutually between oil inlet hole (12) and oil flow channel hole (13), the upper end of last lining (4) and last outer steel sleeve (5) is fixed on the special-shaped joint (2), the upper end of going up special-shaped joint links to each other with oil pipe, transmission shaft (1) passes special-shaped joint (2) fixedlys connected with last screw rod (3), the lower end of following lining (9) and following outer steel sleeve (10) is fixed on the pump block connecting vessels (11), going up in special-shaped joint (2) and the pump block connecting vessels (11) has cavity and through hole, is communicated with the chamber and the passage (14) of lining.
4, single screw pump according to claim 1 is characterized in that: following screw rod (9) can be connected with oil-submersible motor, drives oil extraction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93220526 CN2173871Y (en) | 1993-08-05 | 1993-08-05 | Bidirectional symmetric single screw oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93220526 CN2173871Y (en) | 1993-08-05 | 1993-08-05 | Bidirectional symmetric single screw oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2173871Y true CN2173871Y (en) | 1994-08-10 |
Family
ID=33799648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93220526 Expired - Fee Related CN2173871Y (en) | 1993-08-05 | 1993-08-05 | Bidirectional symmetric single screw oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2173871Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102392629A (en) * | 2011-10-10 | 2012-03-28 | 中国石油大学(华东) | Pressurizing device for ground drive downhole oil-water separation injection-production system in same well |
| CN103075340A (en) * | 2012-12-29 | 2013-05-01 | 重庆明珠机电有限公司 | Device for eliminating axial thrust of single-screw pump |
| CN103174646A (en) * | 2011-12-20 | 2013-06-26 | 重庆明珠机电有限公司 | Tip support device used in single screw pump |
| CN103382935A (en) * | 2013-07-06 | 2013-11-06 | 北京工业大学 | Novel high pressure seawater hydraulic pump provided with two oppositely arranged tapered threaded rods |
| CN104632639A (en) * | 2014-12-30 | 2015-05-20 | 中国矿业大学 | Full-wall-face heating double-speed spiral pseudoplastic fluid pumping device and method |
-
1993
- 1993-08-05 CN CN 93220526 patent/CN2173871Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102392629A (en) * | 2011-10-10 | 2012-03-28 | 中国石油大学(华东) | Pressurizing device for ground drive downhole oil-water separation injection-production system in same well |
| CN103174646A (en) * | 2011-12-20 | 2013-06-26 | 重庆明珠机电有限公司 | Tip support device used in single screw pump |
| CN103075340A (en) * | 2012-12-29 | 2013-05-01 | 重庆明珠机电有限公司 | Device for eliminating axial thrust of single-screw pump |
| CN103382935A (en) * | 2013-07-06 | 2013-11-06 | 北京工业大学 | Novel high pressure seawater hydraulic pump provided with two oppositely arranged tapered threaded rods |
| CN104632639A (en) * | 2014-12-30 | 2015-05-20 | 中国矿业大学 | Full-wall-face heating double-speed spiral pseudoplastic fluid pumping device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |