CN2491623Y - Lever pump having weighting tube - Google Patents
Lever pump having weighting tube Download PDFInfo
- Publication number
- CN2491623Y CN2491623Y CN 01248964 CN01248964U CN2491623Y CN 2491623 Y CN2491623 Y CN 2491623Y CN 01248964 CN01248964 CN 01248964 CN 01248964 U CN01248964 U CN 01248964U CN 2491623 Y CN2491623 Y CN 2491623Y
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- CN
- China
- Prior art keywords
- pump
- rod
- sleeve pipe
- weighting
- tube
- 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
Provided is a sucker-rod pump with a weighting tube. The utility model relates to an oil-well pump. A series of sleeve tubes (1) are mutually connected to form a weighting tube (2) with a tube-shaped structure. The inner diameter of the weighting tube is longer than the diameter of a pump rod (3-2), the outer diameter of the weighting tube (2) is shorter than the inner diameter of an oil pumping tube (3-4). The weighting tube (2) is sleeved on the pump rod (3-2) arranged on the upper end of a plunger (3-1) of the sucker-rod pump (3). Access slits (1-1) piercing up and down are opened on the tube walls of one laterals of the sleeve tubes (1). The directions of the access slits (1-1) of two adjacent sleeve tubes (1) which are sleeved on the pump rod (3-2) are opposite. The friction force, produced by the weighting tube (2) and a pump barrel of the plunger of the sucker-rod pump at down-stroke time of the weighting rod, equals the resistance force produced by fluid flowing of magma, thereby preventing bent phenomenon of the pump rod from happening at down-stroke time of the pump rod, and resolving the problem of abrasion caused by the friction of the pump rod and the tube wall.
Description
Technical field: the utility model relates to a kind of oil well pump
Background technique: use sucker rod pumping system more generally in recovering the oil in the oil field.When pumping with this pump, can produce frictional force between pump plunger and pump barrel, the liquid stream of magma also can produce drag effect.It is crooked that above reason causes pump rod to produce when down stroke, and rub with the tube wall of oil pipe, makes the rate of fault rising of rod pump, shortened the repair cycle of oil well, caused bigger economic loss.For addressing the above problem, generally adopt at present the weighted lever that certain-length is installed in the rod string bottom, but because the weight of weighted lever is evenly distributed on the body of rod resistance in the time of can not directly offsetting the sucker rod down stroke, and self stressedly still can produce bending, so its effect is relatively poor.
Summary of the invention: the utility model has designed a kind of rod pump that has weighting tube, it has eliminated the buckling phenomenon that the drag effect of giving birth to because of the miscarriage of the frictional force between pump plunger and pump barrel and magma liquid causes pump rod to produce when down stroke, and the tube wall that has solved pump rod and oil pipe friction takes place and makes the problem of rod pump rate of fault height, repair cycle weak point.The utility model is interconnected by a series of sleeve pipes 1, and the weighting tube 2 of formation tubular structure, the internal diameter of weighting tube 2 is greater than the diameter of pump rod 3-2, and weighting tube 2 external diameters are set with weighting tube 2 less than oil pick-up tube 3-4 internal diameter on the pump rod 3-2 of rod pump 3 plunger 3-1 upper end.Because weighting tube 2 is sleeved on the pump rod 3-2, and its internal diameter is greater than the diameter of pump rod 3-2, therefore the gravity of weighting tube 2 acts on bottom, therefore weighting tube 2 can balance each other with the resistance that frictional force that produces between rod pump plunger and pump barrel and the miscarriage of magma liquid are given birth to when down stroke, thereby has prevented pump rod produces buckling phenomenon when down stroke generation.The tube wall that has solved pump rod and oil pipe comes in contact and produces the problem of friction, and the high problem of rod pump rate of fault, and has prolonged the repair cycle of oil well.
Description of drawings: Fig. 1 is the structural representation of embodiment one, Fig. 2 is the structural representation of weighting tube 2 in the embodiment one, Fig. 3 is the A-A sectional view of Fig. 2, Fig. 4 is the B-B sectional view of Fig. 2, Fig. 5 is the structural representation of weighting tube 2 in the embodiment two, Fig. 6 is the structural representation of weighting tube 2 in the embodiment three, Fig. 7 is the C-C sectional view of Fig. 6, Fig. 8 is the structural representation of weighting tube 2 in the embodiment four, Fig. 9 is the structural representation of weighting tube 2 in the embodiment five, Figure 10 is the D-D sectional view of Fig. 9, and Figure 11 is the structural representation of embodiment six.
Embodiment one: present embodiment is to be interconnected by a series of sleeve pipes 1 and form the weighting tube 2 of tubular structure.The internal diameter of weighting tube 2 is greater than the diameter of pump rod 3-2, and external diameter is less than oil pick-up tube 3-4 internal diameter.On the pump rod 3-2 of rod pump 3 plunger 3-1 upper end, be set with weighting tube 2.On a side pipe wall of sleeve pipe 1, have the gap 1-1 of up/down perforation, can easily each sleeve pipe 1 be sleeved on the pump rod 3-2 by gap 1-1 like this.The gap 1-1 direction that is sleeved on two sleeve pipes 1 that face mutually on the pump rod 3-2 is opposite, like this interconnecting after forming weighting tube 2 by a series of sleeve pipes 1, this structure can make the weight of weighting tube 2 keep balance, has guaranteed that again weighting tube 2 can not break away from through gap 1-1 and pump rod.Be provided with outside thread 1-2 in the lower end of each sleeve pipe 1, the upper end of each sleeve pipe 1 is provided with internal thread 1-3, forms between the sleeve pipe 1 up and down to be threaded.
Embodiment two: present embodiment and mode of execution one are different is that the path body 1-4 that goes up square casing 1 lower end inserts among the big footpath hole 1-5 of square casing 1 upper end down, on the sidewall of big footpath hole 1-5, have through hole 1-6, have interior threaded hole 1-7 on the tube wall of path body 1-4, sleeve pipe 1 linked together about screw 1-8 was positioned at through hole 1-6 and interior threaded hole 1-7 general.Other composition is identical with mode of execution one with annexation.
Embodiment three: present embodiment and mode of execution two are different is to have the L shaped through hole 1-9 that leads to sleeve pipe 1 upper-end surface on the hole wall of big footpath hole 1-5 of sleeve pipe 1 upper end, be provided with a tenon 1-10 on the outer wall of the path body 1-4 of sleeve pipe 1 lower end, the inner end that the tenon 1-10 of last square casing 1 embeds the L shaped through hole 1-9 of square casing 1 down sleeve pipe 1 up and down closely links together.Other composition is identical with mode of execution one with annexation.
Embodiment four: present embodiment and mode of execution one are different be by take over 4 up and down sleeve pipe 1 link together, taking over 4 is the semicircle pipe structure, take over 4 and be respectively equipped with semi-circular groove 4-1 up and down, have the bulge loop 1-11 of flange arrangement on the sleeve pipe 1, taking over 4 for two is buckled in up and down between two sleeve pipes 1 relatively, and bulge loop 1-11 is embedded in the groove 4-1, and two take over 4 is fixed together by bolt 4-2, and other composition is identical with mode of execution one with annexation.
Embodiment five: present embodiment and mode of execution one are different is to have the groove 1-12 that connects with gap 1-1 on the inwall of sleeve pipe 1 upper end big footpath hole 1-5, the outer wall of sleeve pipe 1 lower end path body 1-4 is provided with tenon 1-10, and inciting somebody to action up and down among the groove 1-12 of the following square casing 1 of tenon 1-10 embedding of last square casing 1, sleeve pipe 1 links together.Other composition is identical with embodiment one with annexation.
Embodiment six: what present embodiment and mode of execution one were different is to be provided with connecting sleeve 5 on weighting tube 2, connecting sleeve 5 is enclosed within the box cupling 3-3 outside of pump rod 3-2, the upper and lower end of connecting sleeve 5 is adapter sleeve 1 respectively, the internal diameter of connecting sleeve 5 is greater than the diameter of box cupling 3-3, and the external diameter of connecting sleeve 5 is less than the internal diameter of oil pick-up tube 3-4.Its objective is that to prevent sleeve pipe 1 stuck on box cupling 3-3.
Claims (9)
1, the rod pump that has weighting tube is characterized in that it is interconnected by a series of sleeve pipes (1), and forms the weighting tube (2) of tubular structure.The internal diameter of weighting tube (2) is greater than the diameter of pump rod (3-2), and weighting tube (2) external diameter is set with weighting tube (2) less than oil pick-up tube (3-4) internal diameter on the pump rod (3-2) of rod pump (3) plunger (3-1) upper end.
2, the rod pump that has weighting tube according to claim 1 is characterized in that having the gap (1-1) of up/down perforation on a side pipe wall of sleeve pipe (1).
3, the rod pump that has weighting tube according to claim 2, gap (1-1) direction that it is characterized in that being sleeved on two sleeve pipes (1) that face mutually on the pump rod (3-2) is opposite.
4, the rod pump that has weighting tube according to claim 1 is characterized in that being provided with outside thread (1-2) in the lower end of each sleeve pipe (1), and the upper end of each sleeve pipe (1) is provided with internal thread (1-3), forms between the sleeve pipe (1) up and down to be threaded.
5, the rod pump that has weighting tube according to claim 1, the path body (1-4) that it is characterized in that square casing (1) lower end inserts in the hole, big footpath (1-5) of following square casing (1) upper end, on the sidewall in big hole, footpath (1-5), have through hole (1-6), have interior threaded hole (1-7) on the tube wall of path body (1-4), sleeve pipe (1) linked together about screw (1-8) was positioned at through hole (1-6) and interior threaded hole (1-7) general.
6, the rod pump that has weighting tube according to claim 1, it is characterized in that having the L shaped through hole (1-9) that leads to sleeve pipe (1) upper-end surface on the hole wall in hole, big footpath (1-5) of sleeve pipe (1) upper end, be provided with a tenon (1-10) on the outer wall of the path body (1-4) of sleeve pipe (1) lower end, the inner end that the tenon (1-10) of last square casing (1) embeds the L shaped through hole (1-9) of square casing (1) down sleeve pipe (1) up and down closely links together.
7, the rod pump that has weighting tube according to claim 1, sleeve pipe (1) links together to it is characterized in that inciting somebody to action adapter (4) up and down, taking over (4) is the semicircle pipe structure, take over (4) and be respectively equipped with semi-circular groove (4-1) up and down, have the bulge loop (1-11) of flange arrangement on the sleeve pipe (1), two adapters (4) are buckled in up and down between two sleeve pipes (1) relatively, and bulge loop (1-11) is embedded in the groove (4-1), and two take over (4) is fixed together by bolt (4-2).
8, the rod pump that has weighting tube according to claim 1, it is characterized in that having the groove (1-12) that connects with gap (1-1) on the inwall in hole, big footpath, sleeve pipe (1) upper end (1-5), the outer wall of sleeve pipe 1 lower end path body (1-4) is provided with tenon (1-10), and the middle sleeve pipe (1) up and down of the groove (1-12) of square casing (1) linked together under the tenon (1-10) of last square casing (1) embedded.
9, the rod pump that has weighting tube according to claim 1, it is characterized in that weighting tube (2) is provided with connecting sleeve (5), connecting sleeve (5) is enclosed within box cupling (3-3) outside of pump rod (3-2), the upper and lower end of connecting sleeve (5) is adapter sleeve (1) respectively, the internal diameter of connecting sleeve (5) is greater than the diameter of box cupling (3-3), and the external diameter of connecting sleeve (5) is less than the internal diameter of oil pick-up tube (3-4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01248964 CN2491623Y (en) | 2001-07-31 | 2001-07-31 | Lever pump having weighting tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01248964 CN2491623Y (en) | 2001-07-31 | 2001-07-31 | Lever pump having weighting tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2491623Y true CN2491623Y (en) | 2002-05-15 |
Family
ID=33659483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01248964 Expired - Fee Related CN2491623Y (en) | 2001-07-31 | 2001-07-31 | Lever pump having weighting tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2491623Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107101761A (en) * | 2017-05-05 | 2017-08-29 | 常州大学 | Sucker rod pump friction in down stroke determines device and assay method |
| CN112282667A (en) * | 2019-07-22 | 2021-01-29 | 中国石油天然气股份有限公司 | Lead-zinc alloy sucker rod auxiliary weighting short joint |
-
2001
- 2001-07-31 CN CN 01248964 patent/CN2491623Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107101761A (en) * | 2017-05-05 | 2017-08-29 | 常州大学 | Sucker rod pump friction in down stroke determines device and assay method |
| CN107101761B (en) * | 2017-05-05 | 2019-03-22 | 常州大学 | Sucker rod pump friction in down stroke measurement device and measuring method |
| CN112282667A (en) * | 2019-07-22 | 2021-01-29 | 中国石油天然气股份有限公司 | Lead-zinc alloy sucker rod auxiliary weighting short joint |
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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 |