CN103510879A - Screw pump hydraulic centering device - Google Patents
Screw pump hydraulic centering device Download PDFInfo
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- CN103510879A CN103510879A CN201310429587.3A CN201310429587A CN103510879A CN 103510879 A CN103510879 A CN 103510879A CN 201310429587 A CN201310429587 A CN 201310429587A CN 103510879 A CN103510879 A CN 103510879A
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- screw pump
- piston
- pin
- connecting rod
- pump hydraulic
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Abstract
The invention belongs to the technical field of mechanical oil extraction and relates to a novel screw pump hydraulic centering device which aims to effectively solve the vibration problem of a stator and a tubing string of a screw pump. A sliding block 2 is connected with a track on a tube body 1 in a matched mode and connected with a connecting rod 4 through a pin 3, the connecting rod 4 is connected with a piston 5 through the pin 3, and a piston outer shell 10 is connected with the tube body 1 through a bolt 11. The screw pump hydraulic centering device is mainly used for oil field screw pump wells, and has the advantages of being quick and convenient to mount, long in service life, good in dynamic centering effect and the like.
Description
Technical field: the present invention relates to mechanical oil recovery technical field, belong to a kind of novel screw pump hydraulic centralizing device.
Background technology: screw pump is comprised of stator and rotor, stator is connected with tubing string, rotor is connected with sucker rod, and rotate under the drive of sucker rod, the motion of screw pump rotor in stator is not concentric motion, its movement locus approximate ellipsoidal, this eccentric motion has caused the vibrations of stator and tubing string.Discharge capacity is larger, and this vibrations Shaoxing opera is strong, thereby makes anti-rotation anchor tooth block loosening, causes losing efficacy.Meanwhile, violent vibrations can also cause stator to be connected with oil pipe and oil pipe between the fatigue failure that connects.Generation for fear of this accident, conventionally in screw pump stator top connection place, centralizer is installed, the centralizer using at present has spring and rubber type, spring centralizer, for convenient, in sleeve pipe, install and take out, be radially transportable, this structure makes centralizer itself can produce periodic motion, thereby causes spring fatigue to lose efficacy.And rubber type centralizer itself is elastic body, with tubing string be passive exposure righting, can not play good centralizing function.In order effectively to solve the vibration problems of screw pump stator and tubing string, improve the application life of erection device, be different from conventional erection device vibrations the passive righting just playing a role occurs, device of the present invention utilizes the principle of hydraulic pressure, has realized initiatively righting.
Summary of the invention: the object of the invention is development and can effectively carry out screw pump righting, and avoid the strenuous vibration of screw pump stator and tubing string, thereby improve the screw pump hydraulic centralizing device of the duty of screw pump.
The object of the invention is to realize by following technical solution: it is mainly comprised of body, slide block, pin, connecting rod, piston, sealing ring, short circuit, piston shell, bolt, circle arc support pin; Wherein the rail groove on slide block and body is connected, slide block is connected by pin with connecting rod, connecting rod is connected by pin with piston, piston shell is connected with body by bolt, piston has pressure guide hole near tube cavity direction, pressure guide hole and tube cavity junction are tightly connected by sealing ring, and piston and piston shell are tightly connected by sealing ring.
Body axially has through hole, and external shaft is to there being two circle arc support pin of 120 ° of being separated by, and body is to locate wall thickness thicker with 120 °, two feet intervals, and has rail groove.
Compared with the prior art, tool has the following advantages in the present invention:
1), this device can effectively solve the vibration problems of screw pump stator and tubing string, can effectively carry out screw pump righting;
2), utilize the principle of hydraulic pressure to realize dynamic righting, pressure reduction is larger, righting effect is better.
3), convenience quick for installation, long service life.
Accompanying drawing explanation: Fig. 1 is sectional drawing of the present invention; Fig. 2 is front view of the present invention; Fig. 3 is the partial enlarged drawing of pressure guide hole 7 of the present invention; Fig. 4 is top view of the present invention.
In figure: 1-body, 2-slide block, 3-pin, 4-connecting rod, 5-piston, 6-sealing ring, 7-pressure guide hole, 8-short circuit, 9-rail groove, 10-piston shell, 11-bolt, 12-feet.
The specific embodiment: below in conjunction with accompanying drawing, the present invention is further described, it mainly by body 1, slide block 2, sell 3, connecting rod 4, piston 5, sealing ring 6, short circuit 8, piston shell 10, bolt 11, circle arc support pin 12 form; Wherein slide block 2 is connected with the rail groove 9 on body 1, slide block 2 is connected by pin 3 with connecting rod 4, connecting rod 4 is connected by pin 3 with piston 5, piston shell 10 is connected with body 1 by bolt 11, piston 5 has pressure guide hole 7 near the interior cavity direction of body 1, pressure guide hole 7 is tightly connected by sealing ring 6 with body 1 inner chamber junction, and piston 5 is tightly connected by sealing ring 6 with piston shell 10.
Body 1 axially has through hole, and external shaft is to there being two circle arc support pin 12 of 120 ° of being separated by, and body 1 is to locate wall thickness thicker with 120 °, two feets, 12 interval, and has rail groove 9.
During on-the-spot application, body 1 top is connected with tubing round thread, and bottom is connected with screw pump by short circuit 8.When oil well operation, body 1 bottom is connected to ，Xia Dao shaft bottom by short circuit 8 with screw pump, top is connected with tubing round thread, and before the present invention is worked, slide block 2, connecting rod 4 and piston 5 are in initial position, effective diameter of the present invention is less than casing inner diameter, guarantees that the present invention can install smoothly.When in body 1 through hole, pressure is greater than the annulus pressure between body 1 and sleeve pipe, under the driving of pressure reduction, piston 5 motions, by connecting rod 4, pass motion to slide block 2, make its upwards outwards motion, now slide block 2 contacts sleeve pipe with two feets 12 simultaneously, makes body 1 form with sleeve pipe at 3 and contacts, thereby with sleeve pipe clamping, stoped screw pump transverse vibration in the other direction.
Claims (2)
1. screw pump hydraulic centralizing device, is characterized in that: it is mainly comprised of body (1), slide block (2), pin (3), connecting rod (4), piston (5), sealing ring (6), short circuit (8), piston shell (10), bolt (11), circle arc support pin (12); Wherein slide block (2) is connected with the rail groove (9) on body (1), slide block (2) is connected by pin (3) with connecting rod (4), connecting rod (4) is connected by pin (3) with piston (5), piston shell (10) is connected with body (1) by bolt (11), piston (5) has pressure guide hole (7) near the interior cavity direction of body (1), pressure guide hole (7) is tightly connected by sealing ring (6) with body (1) inner chamber junction, and piston (5) is tightly connected by sealing ring (6) with piston shell (10).
2. screw pump hydraulic centralizing device according to claim 1, it is characterized in that: body (1) axially has through hole, external shaft is to there being two circle arc support pin (12) of 120 ° of being separated by, body (1) is to locate wall thickness thicker with 120 °, two feets (12) interval, and has rail groove (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310429587.3A CN103510879A (en) | 2013-09-09 | 2013-09-09 | Screw pump hydraulic centering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310429587.3A CN103510879A (en) | 2013-09-09 | 2013-09-09 | Screw pump hydraulic centering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103510879A true CN103510879A (en) | 2014-01-15 |
Family
ID=49894244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310429587.3A Pending CN103510879A (en) | 2013-09-09 | 2013-09-09 | Screw pump hydraulic centering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103510879A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111608598A (en) * | 2020-06-30 | 2020-09-01 | 中国石油天然气股份有限公司 | Cable-passing oil pipe rigid centering device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5358048A (en) * | 1993-04-27 | 1994-10-25 | Ctc International | Hydraulic port collar |
| CN2282056Y (en) * | 1996-12-18 | 1998-05-20 | 胜利石油管理局临盘采油厂 | Centralizer of screw pump |
| US5979550A (en) * | 1998-02-24 | 1999-11-09 | Alberta Ltd. | PC pump stabilizer |
| CN1396372A (en) * | 2002-07-17 | 2003-02-12 | 谷江峰 | Quickly assembled centralizer of screw pump |
| US7308935B2 (en) * | 2005-06-02 | 2007-12-18 | Msi Machineering Solutions Inc. | Rotary pump stabilizer |
-
2013
- 2013-09-09 CN CN201310429587.3A patent/CN103510879A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5358048A (en) * | 1993-04-27 | 1994-10-25 | Ctc International | Hydraulic port collar |
| CN2282056Y (en) * | 1996-12-18 | 1998-05-20 | 胜利石油管理局临盘采油厂 | Centralizer of screw pump |
| US5979550A (en) * | 1998-02-24 | 1999-11-09 | Alberta Ltd. | PC pump stabilizer |
| CN1396372A (en) * | 2002-07-17 | 2003-02-12 | 谷江峰 | Quickly assembled centralizer of screw pump |
| US7308935B2 (en) * | 2005-06-02 | 2007-12-18 | Msi Machineering Solutions Inc. | Rotary pump stabilizer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111608598A (en) * | 2020-06-30 | 2020-09-01 | 中国石油天然气股份有限公司 | Cable-passing oil pipe rigid centering device |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140115 |