CN208845131U - A kind of screw pump oil tube anchor device - Google Patents
A kind of screw pump oil tube anchor device Download PDFInfo
- Publication number
- CN208845131U CN208845131U CN201821313276.5U CN201821313276U CN208845131U CN 208845131 U CN208845131 U CN 208845131U CN 201821313276 U CN201821313276 U CN 201821313276U CN 208845131 U CN208845131 U CN 208845131U
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- China
- Prior art keywords
- pawl
- anchor
- screw pump
- pump oil
- end cover
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Abstract
The utility model discloses a kind of screw pump oil tube anchor device include top connection, anchor set and across anchor set central tube；Top connection upper surface connected pipes, top connection are connected to central tube in lower end；Anchor covers one end and is connect by first end cover with top connection lower end, and anchor covers the other end and is equipped with second end cover, and anchor is put on equipped with pawl pockets, and pawl pockets are interior to be equipped with pawl, is circumferentially uniformly provided with cam in the pipe outer wall of center, cam can be with pawl along central tube radial expansion；Spring cavity is equipped in pawl；Spring cavity is arranged in cam two sides；Spring is equipped in spring cavity, spring one end is arranged in spring cavity, on the centrally disposed pipe in one end.The characteristics of the utility model has kind of stability strong, pawl automatically retractable.
Description
Technical field
The utility model relates to oil mining tool, in particular to a kind of oil tube anchor device for matching screw pump.
Background technique
In existing oil well applying working condition, in steam injection operation process, using screw pump under the rotation driving of ground, spiral shell
Bar pump rotor is in rotary course and screw pump stator radial friction and tubing string pressure medium etc. generate turning moment, to drive
Oil pipe reversion leads to screw thread tripping accident between oil pipe.Such as application No. is 201220707592.7 utility model patents, in anchor
Determine the locking mechanism that device is equipped with, lack effective pretightning force, in lower pump operation process, the locking tooth of setting is oblique vulnerable to casing
The factors such as degree influence, and when meeting obstructions, locking tooth cannot be automatically performed flexible outer diameter, easily cause card resistance or directly result in locking tooth
It falls off, causes production accident.
Utility model content
The technical problems to be solved in the utility model: purpose of the utility model is to solve it is in the prior art not
Foot, provides that a kind of stability is strong, a kind of screw pump oil tube anchor device of pawl automatically retractable.
The technical solution of the utility model includes: a kind of screw pump oil tube anchor device described in the utility model, including above connect
Head, anchor set and the central tube across anchor set；Top connection upper surface connected pipes, top connection lower end is inscribed to be had in described
Heart pipe；The anchor covers one end and is connect by first end cover with top connection lower end, and the anchor set other end is equipped with second end cover, described
Anchor is put on equipped with pawl pockets, and pawl is equipped in the pawl pockets, is circumferentially uniformly provided with cam in the center pipe outer wall,
The cam can drive the pawl along the central tube radial expansion；Spring cavity is equipped in the pawl；The spring cavity is set
It sets in the cam two sides；Spring is equipped in the spring cavity, the spring one end is arranged in the spring cavity, one end setting
On central tube.
Further, the pawl both ends are equipped with buckle, and the buckle includes the first buckle and the second buckle；
The anchor, which is put on, is equipped with the second support limited to the pawl with second buckle upper surface cooperation
Face；
It is equipped with internal screw thread in the first end cover, is threadedly coupled with the sealing surface, the first end cover, which is equipped with, to match
Close first buckle upper surface, the pressing plate limited to the pawl.
Further, the limited block for cooperating the cam is additionally provided in the anchor set.
Further, the second end cover is equipped with external screw thread, connect with the anchor external threading.
Further, it is additionally provided with seal groove on the sealing surface, is equipped with sealing ring in the seal groove.
Further, it is additionally provided with seal groove in the second end cover, is equipped with sealing ring and torque fitting in the seal groove
It is threadedly coupled.
Further, the contact surface that the spring and the central tube contact one end is equipped with ball.
Further, the holding screw for fastening the anchor set is additionally provided in the first end cover.
The utility model compared with prior art the utility model has the advantages that pawl inner spring can guarantee pawl have certain preload
Power, when meeting obstructions in lower pump operation process, pawl automatically retractable outer diameter is not influenced by factors such as production casing gradients,
To guarantee that pumping operation under underground smoothly completes.Pawl both ends are equipped with buckle, cooperation anchor set and first end cover, can prevent pawl stress
It falls off, stability is good；It is equipped with limited block in anchor set, by limiting cam position, prevents the central tube excess of stroke；Spring connects with central tube
The contact surface for touching one end is equipped with ball, reduces the frictional force between spring and central tube, it is therefore prevented that spring and central tube
Abrasion；It is additionally provided with the holding screw for fastening the anchor set in first end cover, prevents connection rear thread from slipping.Detent face is set
There is anti-skidding ripple, it is possible to increase the frictional force between pawl and the production casing for wrapping up oil pipe prevents screw pump rotor and revolving
It turns in journey and screw pump stator radial friction and tubing string pressure medium etc. generates turning moment, oil pipe reversion is driven to lead to oil pipe
Between screw thread thread off accident.
Detailed description of the invention
Fig. 1 is the schematic three dimensional views of the utility model
Fig. 2 is the left view of the utility model；
Fig. 3 is the A-A cross-sectional view in Fig. 2；
Fig. 4 is the structural schematic diagram of the utility model anchor set；
Fig. 5 is the structural schematic diagram of the pawl of the utility model；
Fig. 6 is the enlarged diagram in the portion A in Fig. 3；
Fig. 7 is the enlarged diagram in the portion B in Fig. 3.
Specific embodiment
In order to deepen the understanding of the utility model, below we will the utility model is described in further detail in conjunction with attached drawing,
The embodiment is only used for explaining the utility model, does not constitute the restriction to scope of protection of the utility model.
As Fig. 1-Fig. 7 shows a kind of embodiment of screw pump oil tube anchor device of the utility model, top connection 1, anchor
Set 3 and across anchor set 3 central tube 5；11 connected pipes of top connection upper surface are connected to central tube 5 in top connection lower end 12；Anchor
It covers 3 one end to connect by first end cover 21 with top connection lower end 12, anchor covers 3 other ends and is equipped with second end cover 22, sets on anchor set 3
There are pawl pockets 34, pawl 6 is equipped in pawl pockets 34,6 surface of pawl is equipped with anti-skidding ripple, and 6 both ends of pawl are equipped with buckle, card
Button includes the first buckle 62 and the second buckle 63；Cam 51 is circumferentially uniformly provided on 5 outer wall of central tube, cam 51 can drive spine
Pawl 6 is along 5 radial expansion of central tube；Spring cavity 61 is equipped in pawl 6；Spring cavity 61 is arranged in 51 two sides of cam；In spring cavity 61
Equipped with spring 7,7 one end of spring is arranged in spring cavity 61, on the centrally disposed pipe 5 in one end.Anchor covers 3
First contact surface 31 of 12 cooperations cooperates with the sealing surface 32 of the cooperation of first end cover 21 and with the second 63 upper surfaces of buckle, to spine
The second supporting surface 36 that pawl 6 is limited；It is equipped with internal screw thread in first end cover 21, is threadedly coupled with sealing surface 32, first end cover
21 be equipped with can cooperate 62 upper surface of the first buckle, the pressing plate 211 that pawl 6 is limited；Cooperation cam is additionally provided in anchor set 3
51 limited block 33；Second end cover 22 is equipped with external screw thread, is threadedly coupled with anchor set 3；Seal groove 321 is additionally provided on sealing surface 32,
Sealing ring is equipped in seal groove 321；It is additionally provided with seal groove 321 in second end cover 22, is equipped with sealing ring and torque in seal groove 321
Connector 21 is threadedly coupled；The contact surface that spring 7 and central tube 5 contact one end is equipped with ball；Use is additionally provided in first end cover 21
In the holding screw 210 of fastening anchor set 3.
Working principle of the utility model is: in oily down-hole pump operation, original state, screw pump is answered left-handed, makes central tube 5
Cam minimizes the effect of pawl 6, and 6 inner spring 7 of pawl can guarantee that pawl 6 has certain pretightning force, in lower pump operation process
In meet obstructions 6 automatically retractable outer diameter of pawl, do not influenced by factors such as the set rakes of tubes, it is smoothly complete to guarantee to pump operation under underground
At.When screw pump reaches designated position, when rotating clockwise tubing string, oil pipe drives anchor central tube 5 to rotate, and central tube 5 is convex
Wheel is gradually increased outer diameter, and pawl 6 increases constantly outwardly against production casing inner wall with cam outer diameter, prevents since pawl 6 is equipped with
Sliding ripple and the effect of production casing inner wall, turning moment is bigger, is anchored more secured.To realize standing screw pump stator and oil
Pipe prevents screw pump rotor and rotates in rotary course with the generations such as screw pump stator radial friction and tubing string pressure medium
Torque drives oil pipe reversion to lead to screw thread tripping accident between oil pipe.When later maintenance needs above to mention tubing string, the inverse time is only needed
Needle rotation pipeline, 5 cam of central tube are gradually reduced outer diameter, as cam outer diameter subtracts pawl 6 and internal surface of sleeve pipe realization deblocking.
The characteristics of the utility model has kind of stability strong, pawl automatically retractable, 6 inner spring 7 of pawl can guarantee pawl 6
There is certain pretightning force, when meeting obstructions in lower pump operation process, 6 automatically retractable outer diameter of pawl is not oblique by production casing
The factors such as degree influence, to guarantee that pumping operation under underground smoothly completes.6 both ends of pawl are equipped with buckle, cooperation anchor set 3 and first end cover
21, it can prevent 6 stress of pawl from falling off, stability is good；It is equipped with limited block 33 in anchor set 3, by limiting cam 51 position, is prevented
5 excess of stroke of heart pipe；The contact surface that spring 7 and central tube 5 contact one end is equipped with ball, reduces between spring 7 and central tube 5
Frictional force, it is therefore prevented that the abrasion of spring 7 and central tube 5；The clamp screw for fastening the anchor set 3 is additionally provided in first end cover 21
Nail 210 prevents connection rear thread from slipping.6 surface of pawl is equipped with anti-skidding ripple, it is possible to increase the production set of pawl 6 and package oil pipe
Frictional force between pipe prevents screw pump rotor in rotary course and screw pump stator radial friction and tubing string medium pressure
Power etc. generates turning moment, and oil pipe reversion is driven to lead to screw thread tripping accident between oil pipe.
Above-mentioned specific embodiment only illustrates the technical concept and structure feature of the utility model, it is therefore intended that allow ripe
The stakeholder for knowing technique can implement accordingly, but the above content is not intended to limit the protection scope of the utility model, all
Any equivalent change or modification made by Spirit Essence according to the utility model, should all fall into the protection scope of the utility model
Within.
Claims (9)
1. a kind of screw pump oil tube anchor device, including top connection (1), anchor set (3) and the central tube for passing through the anchor set (3)
(5)；Upper end (11) connected pipes of the top connection (1), the lower end (12) of the top connection (1) is inscribed the central tube
(5)；Described anchor set (3) one end is connect by first end cover (21) with top connection lower end (12), and anchor set (3) other end is equipped with
Second end cover (22), the anchor set (3) are equipped with pawl pockets (34), are equipped with pawl (6) in the pawl pockets (34), described
It is circumferentially uniformly provided with cam (51) on central tube (5) outer wall, the cam (51) can drive the pawl (6) along the center
Manage (5) radial expansion；It is characterized by: being equipped with spring cavity (61) in the pawl (6)；The spring cavity (61) is arranged described
Cam (51) two sides；Spring (7) are equipped in the spring cavity (61), described spring (7) one end is arranged in the spring cavity (61)
It is interior, on the centrally disposed pipe in one end (5).
2. a kind of screw pump oil tube anchor device according to claim 1, it is characterised in that: pawl (6) both ends are set
There is buckle, the buckle includes the first buckle (62) and the second buckle (63)；
The anchor set (3) is equipped with second buckle (63) upper surface cooperation, second limited to the pawl (6)
Supporting surface (36)；
It is equipped with internal screw thread in the first end cover (21), is threadedly coupled with the sealing surface (32) on the anchor set (3), described first
End cap (21), which is equipped with, can cooperate first buckle (62) upper surface, the pressing plate (211) limited to the pawl (6).
3. a kind of screw pump oil tube anchor device according to claim 1, it is characterised in that: also set in the anchor set (3)
There is the limited block (33) for cooperating the cam (51).
4. a kind of screw pump oil tube anchor device according to claim 1, it is characterised in that: the second end cover (22) sets
There is external screw thread, is threadedly coupled with the anchor set (3).
5. a kind of screw pump oil tube anchor device according to claim 2, it is characterised in that: on the sealing surface (32) also
Equipped with seal groove (321), sealing ring is equipped in the seal groove (321).
6. a kind of screw pump oil tube anchor device according to claim 1, it is characterised in that: on the second end cover (22)
It is additionally provided with seal groove (321), sealing ring is equipped in the seal groove (321) and first end cover (21) is threadedly coupled.
7. a kind of screw pump oil tube anchor device according to claim 1, it is characterised in that: the spring (7) with it is described
The contact surface that central tube (5) contacts one end is equipped with ball.
8. a kind of screw pump oil tube anchor device according to claim 1, it is characterised in that: on the first end cover (21)
It is additionally provided with the holding screw (210) for fastening the anchor set (3).
9. a kind of screw pump oil tube anchor device according to claim 1, it is characterised in that: pawl (6) surface is set
There is anti-skidding ripple.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821313276.5U CN208845131U (en) | 2018-08-14 | 2018-08-14 | A kind of screw pump oil tube anchor device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821313276.5U CN208845131U (en) | 2018-08-14 | 2018-08-14 | A kind of screw pump oil tube anchor device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208845131U true CN208845131U (en) | 2019-05-10 |
Family
ID=66353886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821313276.5U Active CN208845131U (en) | 2018-08-14 | 2018-08-14 | A kind of screw pump oil tube anchor device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208845131U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112796695A (en) * | 2021-01-26 | 2021-05-14 | 四川省威沃敦化工有限公司 | Back-inserting mechanism of split type well completion packer |
-
2018
- 2018-08-14 CN CN201821313276.5U patent/CN208845131U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112796695A (en) * | 2021-01-26 | 2021-05-14 | 四川省威沃敦化工有限公司 | Back-inserting mechanism of split type well completion packer |
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