CN101832257A - Reciprocating oil-well pump plunger sealing device - Google Patents
Reciprocating oil-well pump plunger sealing device Download PDFInfo
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- CN101832257A CN101832257A CN 201010177586 CN201010177586A CN101832257A CN 101832257 A CN101832257 A CN 101832257A CN 201010177586 CN201010177586 CN 201010177586 CN 201010177586 A CN201010177586 A CN 201010177586A CN 101832257 A CN101832257 A CN 101832257A
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Abstract
The invention relates to a reciprocating oil-well pump plunger sealing device. The oil pump is sealed by a plunger sealing piece according to the pressure feedback of the oil well and the pump in the working process and by utilizing the inertia lag principle in the well fluid flowing process. The friction drag of the oil-well pump is greatly reduced when the maximum pump efficiency and minimum leakage are guaranteed so as to save the driving energy, guarantee the use reliability and reach the operation and maintenance period of the oil filed. Therefore, the pump efficiency is improved, the friction drag and driving power are reduced, and the service life and reliability of the oil pump are improved. The reciprocating oil-well pump plunger sealing device consists of a pump cylinder, a piston and valve balls, wherein the piston is arranged inside the pump cylinder; the plunger sealing piece is arranged on the piston; a plurality of transverse bars are arranged on the plunger sealing piece; a rectangular groove is formed between every two transverse bars; a plurality of oil holes are formed on a piston wall on the connecting part of the top of the piston and the plunger sealing piece; the valve ball and the valve ball are arranged inside the piston and the pump cylinder respectively; and the upper end of the pump cylinder is connected with an oil well pipe through threads.
Description
Technical field
The present invention relates to the oil well pump seal arrangement that use in a kind of oil field, relate to a kind of reciprocating oil-well pump plunger sealing device specifically.
Background technique
In the prior art, the seal arrangement of down-hole, oil field reciprocating oil-well pump all adopts filler and various seal ring to seal, and no matter oil well pump is under any working state, and its gap all is constant.In order to guarantee sealing effect and improve pump efficiency that its gap often is decided to be minimum.After conventional sealing means adopts excesssive gap, strengthen, pump efficiency is reduced greatly owing to leak; Though the gap is too small leaks for a short time, surface friction drag increases greatly, and driving power is increased; In addition, because routine is sealed in and all is in sealing state in the reciprocal process, when driving power is increased, also make the operating life of oil well pump reduce half.
Summary of the invention
The defective that pump efficiency is low, frictional resistance is big, the life-span is low and driving power is big at existing reciprocating oil-well pump existence, the present invention is according to oil well and pump pressure feedback in the course of the work and the inertia lag principle of utilizing in the well liquid process fluid flow, adopt plunger type sealing spare to come oil pump is sealed, thereby improved pump efficiency, reduce surface friction drag and driving power, improved the working life and the reliability of oil pump.
Solving the problems of the technologies described above the concrete technological scheme of being taked is:
A kind of reciprocating oil-well pump plunger sealing device, comprise pump barrel, piston and valve ball, it is characterized in that: piston (2) is housed in the pump barrel (1), plunger type sealing spare (3) is housed on the piston (2), plunger type sealing spare (3) is provided with some horizontal bars (6), valve ball (4) and valve ball (5) are arranged in the piston (2) or valve ball (4) is arranged in the piston (2), valve ball (5) is arranged in the pump barrel (1), and the upper end of pump barrel (1) is connected with oil well pipe thread.
In this programme, between per two horizontal bars (6), be provided with rectangle groove (7).
In this programme, the top of piston (2) and with the piston wall of plunger type sealing spare (3) joint on be provided with several oilholes (10).
Good effect of the present invention: the present invention is according to oil well and pump pressure feedback in the course of the work and the inertia lag principle of utilizing in the well liquid process fluid flow, adopt plunger seal to come oil pump is sealed, when guaranteeing maximum pump efficiency and minimum leakage, reduce the oil well pump frictional resistance significantly, save driving source, and assurance reliability of using and the use service cycle that reaches the oil field, thereby improved pump efficiency, reduce surface friction drag and driving power, improved the working life and the reliability of oil pump.The present invention compares with U.S. API standard, and its pump wastage has reduced by 45%, and frictional resistance has reduced by 15%, and the machine energy-saving rate reaches 8-10%, and pump efficiency has improved 18%, and cost for oil production reduces more than 20%.Application area of the present invention also can be extended in other mechanical device of equivalent environment, has very vast market prospect and favorable social and economic benefits.
Description of drawings
Fig. 1 is the structural representation of first embodiment of the invention;
Fig. 2 is the schematic representation of local amplification of the A of Fig. 1 and oil flow direction;
Fig. 3 is the structural representation of second embodiment of the invention;
Fig. 4 is view during piston stroking upward among Fig. 3;
Fig. 5 is view during descent of piston among Fig. 3.
Embodiment
Below in conjunction with accompanying drawing the present invention is described further.
A kind of reciprocating oil-well pump plunger sealing device, as shown in figures 1 and 3, comprise pump barrel, piston and valve ball, it is characterized in that: piston 2 is housed in the pump barrel 1, plunger type sealing spare 3 is housed on the piston 2, plunger type sealing spare 3 is provided with some horizontal bars 6, and valve ball 4 and valve ball 5 are separately positioned in piston 2 and the pump barrel 1, and the upper end of pump barrel 1 is connected with oil well pipe thread.
Among the present invention, adopt two kinds of embodiments to replace filler and various seal ring structure that down-hole, existing oil field reciprocating oil-well pump seal arrangement adopts, overcome the drawback that its pump efficiency is low, surface friction drag big and driving power increases.First embodiment of the invention as shown in Figure 1, piston 2 is housed in the pump barrel 1, plunger type sealing spare 3 is housed on the piston 2, plunger type sealing spare 3 is provided with some horizontal bars 6, between per two horizontal bars 6, be provided with rectangle groove 7, valve ball 4 and valve ball 5 are separately positioned on the upper/lower terminal in the piston 2, and the upper end of pump barrel 1 is connected with oil well pipe thread.Valve ball 4 and valve ball 5 open and close when piston 2 uplink and downlink respectively, to reach the purpose of pump oil.When present embodiment is made, piston 2 and plunger type sealing spare 3 directly can be made one.
Fig. 2 is the part amplification of Fig. 1 and the schematic representation of oil flow direction.Among the figure, the direction of oil flow in the pump barrel 1 when descending oil stream 9 represent piston 2 up, pump barrel 1 interior oil flow direction when up oil stream 8 represents piston 2 descending, C is the degree of depth of groove 7, D is the gap between plunger type sealing spare 3 and the pump barrel 1.When piston 2 is up, end pressure is higher than end pressure down on the pump barrel 1, make oil descending from clearance D, owing to the existence of a plurality of grooves 7 on the plunger type sealing spare 3 with viscosity of crude is big and the reason of fluid wall-attached jet, make the distance of descending oil stream 9 attached groove 7 walkings be longer than the tube wall distance, compare with the up speed of piston 2 to have formed and be used to row and lag behind, when piston 2 is up to when requiring the position, flow of oil is the lower end of no show pump barrel 1 still; Then piston 2 is descending, the pressure of pump barrel 1 lower end is greater than the pressure of pump upper end, make up oil stream 8 up from clearance D, owing to the existence of a plurality of grooves 7 on the plunger type sealing spare 3 with viscosity of crude is big and the reason of fluid wall-attached jet, make the distance of up oil stream 8 attached ditch 7 grooves walkings be longer than the tube wall distance, compare with the descending speed of piston 2 to have formed and be used to row and lag behind, when piston 2 is up to when requiring the position, flow of oil is the lower end of no show pump barrel 1 still, thereby make up oil stream 8, descending oil stream 9 only exists in clearance D and the groove 7, play the effect of the sealing and the resistance of reducing friction, therefore improved pump efficiency, reduced the pump driving power.
Second embodiment of the present invention as shown in Figure 3, piston 2 is housed in the pump barrel 1, plunger type sealing spare 3 is housed on the piston 2, plunger type sealing spare 3 is provided with some horizontal bars 6, the top of piston 2 and with the piston wall of plunger type sealing spare 3 joints on be provided with several oilholes 10, valve ball 4 and valve ball 5 are separately positioned in the piston 2 and the bottom in the pump barrel 1, and the upper end of pump barrel 1 is connected with oil well pipe thread.Valve ball 4 and valve ball 5 open and close when piston 2 uplink and downlink respectively, to reach the purpose of pump oil.In the present embodiment, the horizontal bar 6 that is provided with on the plunger type sealing spare 3 plays the effect of an oil removal.When present embodiment is made, piston 2 and plunger type sealing spare 3 directly can be made one.
View when Figure 4 shows that in the second embodiment of the invention piston stroking upward.When piston 2 is up, because end pressure is higher than end pressure down on the pump 1, make oil stream P1 enter plunger type sealing spare 3 inboards from the top that is arranged on piston 2 and with each oilhole 10 on the piston wall of plunger type sealing spare 3 joints, plunger type sealing spare 3 is expanded, feedback control plunger type sealing spare 3 becomes minimum and oil-filled lubricated with the gap of pump barrel 1, has reduced surface friction drag, prevents to reveal, improve sealing greatly, improved pump efficiency.
View when Figure 5 shows that in the second embodiment of the invention descent of piston.When piston 2 is descending, because 1 time end pressure of pump is higher than end pressure, oil stream P2 enters plunger type sealing spare 3 outsides, make the plunger type sealing spare 3 on the piston 2 big and oil-filled lubricated with the gap change of pump barrel 1, basic and the pump barrel 1 in this gap does not produce friction, reduce surface friction drag, improved sealing greatly, improved pump efficiency.
Claims (3)
1. reciprocating oil-well pump plunger sealing device, comprise pump barrel, piston and valve ball, it is characterized in that: piston (2) is housed in the pump barrel (1), plunger type sealing spare (3) is housed on the piston (2), plunger type sealing spare (3) is provided with some horizontal bars (6), valve ball (4) and valve ball (5) are arranged in the piston (2) or valve ball (4) is arranged in the piston (2), valve ball (5) is arranged in the pump barrel (1), and the upper end of pump barrel (1) is connected with oil well pipe thread.
2. a kind of reciprocating oil-well pump plunger sealing device according to claim 1 is characterized in that: be provided with rectangle groove (7) between per two horizontal bars (6).
3. a kind of reciprocating oil-well pump plunger sealing device according to claim 1 is characterized in that: the top of piston (2) and with the piston wall of plunger type sealing spare (3) joint on be provided with several oilholes (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010177586 CN101832257A (en) | 2010-05-20 | 2010-05-20 | Reciprocating oil-well pump plunger sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010177586 CN101832257A (en) | 2010-05-20 | 2010-05-20 | Reciprocating oil-well pump plunger sealing device |
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| Publication Number | Publication Date |
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| CN101832257A true CN101832257A (en) | 2010-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201010177586 Pending CN101832257A (en) | 2010-05-20 | 2010-05-20 | Reciprocating oil-well pump plunger sealing device |
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| CN (1) | CN101832257A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104235005A (en) * | 2014-09-05 | 2014-12-24 | 江苏宏业石油装备科技有限公司 | Two-stage dynamic seal oil well pump plunger used for oil field plunger oil well pump |
| CN104912782A (en) * | 2015-06-01 | 2015-09-16 | 东北石油大学 | Combined pump barrel small-diameter oil well pump |
| CN109630402A (en) * | 2019-01-24 | 2019-04-16 | 吉林大学 | A kind of self-lubricating abrasion-resistant oil pump plunger piston |
| CN110778492A (en) * | 2019-11-05 | 2020-02-11 | 梁也 | Hammer body reverse-hair one-way sealing device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000031415A1 (en) * | 1998-11-26 | 2000-06-02 | Continental Teves Ag & Co. Ohg | Piston pump |
| CN2739387Y (en) * | 2004-07-08 | 2005-11-09 | 山其坤 | Dual sealed supershort energy-saving plunger oil-pumping pump assembly |
| CN1892031A (en) * | 2005-07-06 | 2007-01-10 | 大庆油田有限责任公司 | Hydraulic self-sealed plunger oil-well pump |
| CN200955490Y (en) * | 2006-09-14 | 2007-10-03 | 大庆油田有限责任公司 | Efficient bionical-face sealing valve oil pump |
| CN201148963Y (en) * | 2007-12-12 | 2008-11-12 | 殷文著 | High-efficiency oil-well pump |
-
2010
- 2010-05-20 CN CN 201010177586 patent/CN101832257A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000031415A1 (en) * | 1998-11-26 | 2000-06-02 | Continental Teves Ag & Co. Ohg | Piston pump |
| CN2739387Y (en) * | 2004-07-08 | 2005-11-09 | 山其坤 | Dual sealed supershort energy-saving plunger oil-pumping pump assembly |
| CN1892031A (en) * | 2005-07-06 | 2007-01-10 | 大庆油田有限责任公司 | Hydraulic self-sealed plunger oil-well pump |
| CN200955490Y (en) * | 2006-09-14 | 2007-10-03 | 大庆油田有限责任公司 | Efficient bionical-face sealing valve oil pump |
| CN201148963Y (en) * | 2007-12-12 | 2008-11-12 | 殷文著 | High-efficiency oil-well pump |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104235005A (en) * | 2014-09-05 | 2014-12-24 | 江苏宏业石油装备科技有限公司 | Two-stage dynamic seal oil well pump plunger used for oil field plunger oil well pump |
| CN104912782A (en) * | 2015-06-01 | 2015-09-16 | 东北石油大学 | Combined pump barrel small-diameter oil well pump |
| CN104912782B (en) * | 2015-06-01 | 2017-03-08 | 东北石油大学 | Combination type pump barrel minor diameter oil well pump |
| CN109630402A (en) * | 2019-01-24 | 2019-04-16 | 吉林大学 | A kind of self-lubricating abrasion-resistant oil pump plunger piston |
| CN109630402B (en) * | 2019-01-24 | 2023-10-24 | 吉林大学 | Self-lubricating wear-resistant oil pump plunger |
| CN110778492A (en) * | 2019-11-05 | 2020-02-11 | 梁也 | Hammer body reverse-hair one-way sealing device |
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Open date: 20100915 |