CN201284629Y - Pumping-assisted centralizer of pumping rod - Google Patents
Pumping-assisted centralizer of pumping rod Download PDFInfo
- Publication number
- CN201284629Y CN201284629Y CNU2008201743463U CN200820174346U CN201284629Y CN 201284629 Y CN201284629 Y CN 201284629Y CN U2008201743463 U CNU2008201743463 U CN U2008201743463U CN 200820174346 U CN200820174346 U CN 200820174346U CN 201284629 Y CN201284629 Y CN 201284629Y
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- CN
- China
- Prior art keywords
- pumping
- valve core
- pole
- centralizer
- rod
- 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 discloses a centralizer used for helping the pumping of a pumping rod, comprising a central rod, a centralizing body and a valve core body; on one hand, the centralizing body has a function of centralizing the pumping rod, leads the pumping rod to avoid contacting with the oil shaft wall, reduces the abrasion between a rod and a tube, thus achieving the object of preventing partial abrasion; and on the other hand, when the valve core body blocks the oil passage of the centralizing body, the centralizing body is taken as the piston of the pumping rod and has the functions of helping pumping the oil, proportioning the pressure difference acted on the piston of the oil pump and reducing the pressure difference of the piston of the oil pump, thus improving the pumping efficiency of the oil pump, lightening the abrasion and prolonging the service life.
Description
Technical field
The utility model relates to a kind of oil pumping rod centering device that is used for deep well oil pumping, can help oil well pump to improve pump efficiency, life-saving, set upright sucker rod, reduce sucker rod and oil pick-up tube eccentric wear.
Background technology
At present, rod pumping pump recovers the oil and to remain one of oil recovery form the most widely of field use.And the eccentric wear of sucker rod is the one of the main reasons that rod pumping pump oil production equipment fault takes place all the time.
The wearing and tearing of deep-well oil pump plunger can make pump efficiency reduce, and the length of pump detection period depends on the abrasion condition of oil pump plunger piston to a great extent.Experimental study shows, the principal element that influences oil well pump pump efficiency size is the pump leakage amount, and the size of wastage depends primarily on the size (except the viscosity of liquid) of gap delta between oil pump plunger piston and the pump barrel and oil pump plunger piston pressure differential deltap P up and down; The wearing and tearing of oil pump plunger piston also are directly proportional with pressure differential deltap P.As seen, manage to reduce oil pump plunger piston pressure differential deltap P up and down and not only can improve pump efficiency, and can prolong the friction durability of pump.
The utility model content
Technical problem to be solved in the utility model provides a kind of simple and reliable for structure, pumping-improvement centralizer of pumping rod that can improve pump efficiency.
For solving the problems of the technologies described above, the technical solution of the utility model is: pumping-improvement centralizer of pumping rod comprises:
Center-pole, fixedly connected with sucker rod in two ends;
Centralizer body is fixed on the described center-pole, and the neighboring of described centralizer body is positioned at cylindrical surface and concentric with described center-pole, and the described center-pole in described centralizer body upper edge is axially arranged with oil flow channel;
Valve core is slidingly mounted on the described center-pole and is positioned at described centralizer body top, and described valve core is provided with the spool that is used to close the described oil flow channel on the described centralizer body;
The valve core stopping means limits the scope that slides up and down of described valve core.
As improvement, described oil flow channel is arranged on the external surface of described centralizer body, and along the circumferential uniform setting of described centralizer body; When the spool of described valve core was closed described oil flow channel, described centralizer body and described valve core were formed a cylinder.
As further improvement, the surface of the spool of described valve core and described center-pole external surface are fitted, and spool also can play the effect of setting upright sucker rod like this.
As further improvement, described valve core stopping means comprises the stop collar that is sleeved on the described center-pole, is provided with the locking lock-screw between described stop collar and the described center-pole.
Owing to adopted technique scheme, pumping-improvement centralizer of pumping rod comprises center-pole, centralizer body, valve core, centralizer body plays the effect of setting upright sucker rod on the one hand, make sucker rod avoid contacting, reduce the wearing and tearing between the rod tube, reach the purpose of anti-eccentric wear with the oil well barrel; When the valve core envelope is closed the oil flow channel of roman on the other hand, centralizer body just becomes the plunger that is arranged on the sucker rod, play the effect of auxiliary oil pumping, share the pressure reduction that acts on the oil pump plunger piston, pressure reduction on the oil pump plunger piston is reduced, thereby improve the pump efficiency of oil well pump, alleviate wearing and tearing, improve the life-span.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further elaborated.
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 is that A-A among Fig. 1 is to view;
Fig. 3 is that B-B among Fig. 1 is to view.
The specific embodiment
The concrete structure of present embodiment mainly is made up of center-pole 1, centralizer body 2, valve core 3, stop collar 4 and lock-screw 5 as shown in Figure 1.
Center-pole 1 is equivalent to a high-intensity sucker rod substitute, and upper and lower side is the sucker rod standard thread, can be connected in the rod string easily.
Referring to Fig. 2, centralizer body 2 casts on the center-pole, its material be high strength, wear-resistant, corrosion-resistant, with the little organic material of oil pick-up tube friction factor, its lateral wall plays the effect of setting upright sucker rod, lateral wall is provided with three oil flow channels 21.
Referring to Fig. 3, valve core 3 can slide up and down along center-pole, also is by making with the centralizer body identical materials; Valve core 3 has three spools 31 that the oil flow channel 21 with centralizer body matches, and during the described oil flow channel 21 of spool 31 shutoff of described valve core, described centralizer body and described valve core are formed a cylinder.
Lock-screw 5 locking stop collars 4 prevent to release.
The operating principle of present embodiment is as follows:
When the sucker rod down stroke, under the effect of frictional force and hydraulic blow, valve core 3 is in top dead-centre, as shown in Figure 1.Whole improvement centralizer of pumping is unimpeded up and down, and the area of passage of design is enough to allow liquid pass through, and improvement centralizer of pumping only plays centralizing function.
When the sucker rod upstroke, also be under the effect of frictional force and hydraulic blow, valve core 3 slides into bottom dead centre, spool blocks the oil flow channel of centralizer body, and centralizer body and valve core 3 are formed a plunger, except having centralizing function, also share partial action at oil pump plunger piston operting differential pressure up and down, reduce the oil pumping pump leakage, reached the raising pump efficiency, alleviate wearing and tearing, improve the purpose in life-span, had the effect of taking out that helps significantly.
Center-pole is just made by high-strength alloy, and its intensity is greater than corresponding sucker rod; Its top-pour is cast with centralizer body 2; Top is set with the valve core that slides on center-pole; Valve core has the spool that matches with the centralizer body oil flow channel.Centralizer body and valve core all with high strength, wear-resistant, corrosion-resistant, make with the little organic material of rod drag coefficient, and connect rod string rational position.
Above embodiment only is of the present utility model giving an example; protection domain of the present utility model is as the criterion with the content of claim; as the common engineers and technicians in present technique field, any equivalence techniques conversion of making based on spirit of the present utility model is all within protection domain of the present utility model.
Claims (4)
1. pumping-improvement centralizer of pumping rod, it is characterized in that: it comprises:
Center-pole, fixedly connected with sucker rod in two ends;
Centralizer body is fixed on the described center-pole, and described centralizer body is cylindrical and concentric with described center-pole, and the described center-pole in described centralizer body upper edge is axially arranged with oil flow channel;
Valve core is slidingly mounted on the described center-pole and is positioned at described centralizer body top, and described valve core is provided with the spool that is used to close the described oil flow channel on the described centralizer body;
The valve core stopping means limits the scope that slides up and down of described valve core.
2. pumping-improvement centralizer of pumping rod as claimed in claim 1 is characterized in that: described oil flow channel is arranged on the external surface of described centralizer body, and along the circumferential uniform setting of described centralizer body; When the spool of described valve core was closed described oil flow channel, described centralizer body and described valve core were formed a cylinder.
3. pumping-improvement centralizer of pumping rod as claimed in claim 2 is characterized in that: the inner surface of the spool of described valve core and described center-pole external surface are fitted.
4. as claim 1,2 or 3 described pumping-improvement centralizer of pumping rod, it is characterized in that: described valve core stopping means comprises the stop collar that is sleeved on the described center-pole, is provided with the locking lock-screw between described stop collar and the described center-pole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201743463U CN201284629Y (en) | 2008-10-31 | 2008-10-31 | Pumping-assisted centralizer of pumping rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201743463U CN201284629Y (en) | 2008-10-31 | 2008-10-31 | Pumping-assisted centralizer of pumping rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201284629Y true CN201284629Y (en) | 2009-08-05 |
Family
ID=40949614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201743463U Expired - Fee Related CN201284629Y (en) | 2008-10-31 | 2008-10-31 | Pumping-assisted centralizer of pumping rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201284629Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105952392A (en) * | 2016-05-17 | 2016-09-21 | 铁岭米勒石油新材料有限公司 | Auxiliary oil pumping amplifier |
| CN107201885A (en) * | 2017-06-16 | 2017-09-26 | 盐城市东荣石油机械有限公司 | A kind of oil pumping polish rod plugging device |
-
2008
- 2008-10-31 CN CNU2008201743463U patent/CN201284629Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105952392A (en) * | 2016-05-17 | 2016-09-21 | 铁岭米勒石油新材料有限公司 | Auxiliary oil pumping amplifier |
| CN105952392B (en) * | 2016-05-17 | 2019-01-25 | 铁岭米勒石油新材料有限公司 | A kind of auxiliary oil pumping synergistic device |
| CN107201885A (en) * | 2017-06-16 | 2017-09-26 | 盐城市东荣石油机械有限公司 | A kind of oil pumping polish rod plugging device |
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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: 20090805 Termination date: 20091130 |