CN207296908U - A kind of proof-wear sucker rod centralising device suitable for light crude oil - Google Patents
A kind of proof-wear sucker rod centralising device suitable for light crude oil Download PDFInfo
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- CN207296908U CN207296908U CN201820081544.9U CN201820081544U CN207296908U CN 207296908 U CN207296908 U CN 207296908U CN 201820081544 U CN201820081544 U CN 201820081544U CN 207296908 U CN207296908 U CN 207296908U
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Abstract
The utility model proposes a kind of proof-wear sucker rod centralising device suitable for light crude oil.It is related to well rod technical field.Clearance fit is connected with centralizer body on cylinder between top connection and lower contact, centralizer body is two panels fastening structure, cylindrical gap after being fixed by hexagon socket head cap screw between top connection and lower contact is connected, centralizer body outer cylinder surface is equipped with the spiral groove that is evenly arranged along centerline direction, and the boss between two grooves is equipped with the roller arranged along hand of helix.The utility model has the advantages that：The centralizer is by setting the upper and lower connector of split centralizer body clearance fit, the advantages of having integral type and Split type centralizer concurrently, it can prevent the generation of friction phenomenon, oil pumping torsion of bar is prevented at the same time, set roller to reduce friction coefficient, improve the production efficiency of pumping unit, be convenient for changing parts, the human cost and goods and materials cost of maintenance maintenance are reduced, it is favourable to promote and apply.
Description
Technical field：
It the utility model is related to well rod technical field, specifically a kind of eccentric abrasion prevention suitable for light crude oil
Oil pumping rod centering device.
Background technology：
Crude oil is given rise to ground by screw pump oil pumping system, and the rotation of surface drive is delivered to well by sucker rod
Lower screw pump, under the action of moment of torsion and wellbore trajectory, sucker rod can be distorted and stir, and oil pumping club shaft and oil pipe can not
Rub with avoiding, cause tubing wall thinning, pressure reduction is born, for a long time it is also possible to showing for rod broken can be produced
As influencing the normal production of oil well；
Oil pumping rod centering device has that pliability is strong, it contacts with tube inner wall, it is possible to reduce the friction of bar and pipe, enhancing pumping
The oil recovery service life of oil machine, integral type centralizer are tight with the rotation campaign of sucker rod, local friction phenomenon, long-time service abrasion
Weight, increases production cost；Easily there is piston effect in split type righting, influences the normal operation of equipment, the surface of centralizer
Usually set spiral raised line as centralizer body to prevent eccentric wear, but spiral raised line easily turns round sucker rod
Turn, security is not high, influences the efficiency that deep-well extracts oil；
As little as 2, the fulcrum of oil pumping rod centering device, up to five, six, centralizer should be selected for the crude oil of different viscosities
Different number of fulcrum, fulcrum is few, and overcurrent performance is good, and support effect is bad；Fulcrum is at most opposite.
Utility model content：
To solve the above-mentioned problems, the utility model provides a kind of eccentric wear prevention pumping rod righting suitable for light crude oil
Device.
The technical solution of the utility model is：A kind of proof-wear sucker rod centralising device suitable for light crude oil, including it is upper
Connector and lower contact, clearance fit is connected with centralizer body on the cylinder between top connection and lower contact, and centralizer body is that two panels fastens
Structure, the cylindrical gap after being fixed by hexagon socket head cap screw between top connection and lower contact are connected.
Centralizer body outer cylinder surface is equipped with the spiral groove that is evenly arranged along centerline direction, the boss between two grooves
It is equipped with the roller arranged along hand of helix.
The roller, roller and centralizer body are Split type structure, are made of spherical rolling bearing, axis pin and frame, frame
Frame is fixed in the boss of centralizer body by hexagon socket head cap screw.
The roller, it is 3 that quantity is set on every boss.
The groove, its quantity are 6.
The boss of the centralizer body, its upper and lower both sides are equipped with chamfering.
The utility model has the advantages that：The centralizer is by setting split centralizer body clearance fit is upper and lower to connect
Head, the advantages of having integral type and Split type centralizer concurrently, you can prevent the generation of friction phenomenon, while prevent the torsion of sucker rod
Turn, set roller to reduce friction coefficient, improve the production efficiency of pumping unit, be convenient for changing parts, reduce the people of maintenance maintenance
Power cost and goods and materials cost are favourable to promote and apply.
Brief description of the drawings：
Fig. 1 is the structure diagram of the utility model；
Attached drawing 2 is the sectional view of centralizer body in the utility model.
1- top connections in figure, 2- lower contacts, 3- chamferings, 4- rollers, 5- grooves, 6- centralizer bodies.
Embodiment：
The utility model is described in further detail below in conjunction with the accompanying drawings：
As shown in Fig. 1 combinations Fig. 2, a kind of proof-wear sucker rod centralising device suitable for light crude oil, including 1 He of top connection
Lower contact 2, clearance fit is connected with centralizer body 6 on the cylinder between top connection 1 and lower contact 2, and centralizer body 6 fastens knot for two panels
Structure, the cylindrical gap after being fixed by hexagon socket head cap screw between top connection 1 and lower contact 2 are connected, and centralizer body is with above connecing
Clearance fit on cylinder between first 1 and lower contact 2 so that centralizer body 6 can produce rotation under the effect of external force, so that anti-
Only friction phenomenon, the Split type structure of centralizer body 6, can be individually replaced centralizer body after centralizer body 6 is worn or is damaged, and reduce maintenance
Expense.
6 outer cylinder surface of centralizer body is equipped with the spiral groove 5 that is evenly arranged along centerline direction, between two grooves 5
Boss is equipped with the roller 4 arranged along hand of helix, and spiral groove 5 has two effects, first, groove 5 is former as extraction
The passage of oil, second, under the mobilization of crude oil, the left-right rotation with sucker rod upper and lower of centralizer body 6, prevents eccentric wear, rolls
The effect of wheel 4 is that sliding friction is changed into rolling friction, reduces the frictional force between centralizer body 6 and oil pipe, improves 6 He of centralizer body
The service life of oil pipe.
The roller 4, roller 4 and centralizer body 6 are Split type structure, are made of spherical rolling bearing, axis pin and frame,
Frame is fixed on by hexagon socket head cap screw in the boss of centralizer body 6, and the Split type structure of roller 4 makes roller 4 individually to repair replacement,
Reduce maintenance cost.
The roller 4, it is 3 that quantity is set on every boss so that centralizer body 6 is more uniformly stressed.
The groove 5, its quantity are 6, and the quantity of same centralizer body is also 6, and the centralizer of the specification is suitable for
Light crude oil, do not influence crude oil suction in the case of, being more uniformly stressed between centralizer body and oil pipe, improve sucker rod and
The service life of oil pipe.
The boss of the centralizer body 6, its upper and lower both sides are equipped with chamfering 3, guiding role and crude oil as centralizer body
Pass through.
The centralizer has integral type and Split type centralizer concurrently by setting the upper and lower connector of split centralizer body clearance fit
The advantages of, you can prevent the generation of friction phenomenon, while prevent oil pumping torsion of bar, set roller to reduce friction coefficient, improve
The production efficiency of pumping unit, is convenient for changing parts, reduces the human cost and goods and materials cost of maintenance maintenance, and favourable promote should
With.
Claims (6)
1. a kind of proof-wear sucker rod centralising device suitable for light crude oil, including top connection (1) and lower contact (2), its feature
It is：Clearance fit is connected with centralizer body (6) on cylinder between top connection (1) and lower contact (2), and centralizer body (6) is two panels
Fastening structure, the cylindrical gap after being fixed by hexagon socket head cap screw between top connection (1) and lower contact (2) are connected.
A kind of 2. proof-wear sucker rod centralising device suitable for light crude oil according to claim 1, it is characterised in that：Help
Roman (6) outer cylinder surface is equipped with the spiral groove (5) that is evenly arranged along centerline direction, the boss between two grooves (5)
It is equipped with the roller (4) arranged along hand of helix.
A kind of 3. proof-wear sucker rod centralising device suitable for light crude oil according to claim 2, it is characterised in that：Institute
The roller (4) stated, roller (4) and centralizer body (6) are Split type structure, are made of spherical rolling bearing, axis pin and frame, frame
It is fixed on by hexagon socket head cap screw in the boss of centralizer body (6).
A kind of 4. proof-wear sucker rod centralising device suitable for light crude oil according to claim 2, it is characterised in that：Institute
The roller (4) stated, it is 3 that quantity is set on every boss.
A kind of 5. proof-wear sucker rod centralising device suitable for light crude oil according to claim 2, it is characterised in that：Institute
The groove (5) stated, its quantity are 6.
6. a kind of proof-wear sucker rod centralising device suitable for light crude oil according to claim 1 or 2, its feature exists
In：The boss of the centralizer body (6), its upper and lower both sides are equipped with chamfering (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820081544.9U CN207296908U (en) | 2018-01-17 | 2018-01-17 | A kind of proof-wear sucker rod centralising device suitable for light crude oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820081544.9U CN207296908U (en) | 2018-01-17 | 2018-01-17 | A kind of proof-wear sucker rod centralising device suitable for light crude oil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207296908U true CN207296908U (en) | 2018-05-01 |
Family
ID=62275113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820081544.9U Active CN207296908U (en) | 2018-01-17 | 2018-01-17 | A kind of proof-wear sucker rod centralising device suitable for light crude oil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207296908U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112253009A (en) * | 2020-12-09 | 2021-01-22 | 中国石油天然气集团有限公司 | Roller drag reducer for continuous oil pipe |
-
2018
- 2018-01-17 CN CN201820081544.9U patent/CN207296908U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112253009A (en) * | 2020-12-09 | 2021-01-22 | 中国石油天然气集团有限公司 | Roller drag reducer for continuous oil pipe |
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