CN201206440Y - Rolling anti-jumping centralizer for screw pump - Google Patents
Rolling anti-jumping centralizer for screw pump Download PDFInfo
- Publication number
- CN201206440Y CN201206440Y CNU2008201110899U CN200820111089U CN201206440Y CN 201206440 Y CN201206440 Y CN 201206440Y CN U2008201110899 U CNU2008201110899 U CN U2008201110899U CN 200820111089 U CN200820111089 U CN 200820111089U CN 201206440 Y CN201206440 Y CN 201206440Y
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- CN
- China
- Prior art keywords
- centralizer
- centralizer body
- guard bar
- bar device
- screw pump
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- Expired - Fee Related
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Abstract
The utility model relates to a rolling anti-channeling centralizer for a screw pump. The rolling anti-channeling centralizer comprises a centralizer body (1), convex ribs (3) parallel to the axial line are uniformly distributed on the wall of the centralizer body (1), the centralizer body (1) is cast between the two dummy clubs (4) of a rod protector (2), and the rod protector (2) is cast on a sucker rod. A centralizing sleeve is arranged between the centralizer body and a well rod, friction only happens between the centralizer body and the centralizing sleeve during the rotation process rather than the friction between the centralizer body and the well rod, so that the phenomenon that the well rod is rubbed off is avoided.
Description
Technical field:
The utility model relates to a kind of downhole tool in the oil recovery field, oil field, belongs to a kind of screw pump rolling anti-channeling formula centralizer.
Background technology:
In oil recovery field, oil field, along with deepening continuously of oil field development, screw pump oil production extensively utilizes in the oil field.When sucker rod rotates in oil pipe, the eccentric wear phenomenon ubiquity of sucker rod and oil pipe, in order to prevent to produce eccentric wear between sucker rod and the oil pipe, be to be directly installed on centralizer on the well bar that stop is housed or to be installed on the short circuit of well bar at present, the well bar is in the process of rotation, centralizer can and the well bar between produce friction, very serious to the wearing and tearing of well bar, the generation of the situation that the well bar rubbed by centralizer is often arranged.
The utility model content:
In order to overcome the deficiency that exists in the background technology, the utility model provides a kind of screw pump rolling anti-channeling formula centralizer, setting upright between main body and the well bar of this centralizer has supporting positive cover, setting upright main body rubs with supporting positive cover in rotation process, do not rub the phenomenon of having avoided the well bar to be rubbed with the well bar.
The technical solution of the utility model is: this screw pump rolling anti-channeling formula centralizer comprises centralizer body, sets upright and is evenly equipped with the fin parallel with axis on the body wall, and centralizer body casts between guard bar device two boss, and the guard bar device casts on the sucker rod.
Above-mentioned centralizer body is made up of left side grafting piece and right grafting piece, left side grafting piece and right grafting piece are plugged between guard bar device two boss mutually, and centralizer body is rotatable, and the guard bar device is made up of left inserted block and right inserted block, and left inserted block and right inserted block are pegged graft mutually at two ends and be fixed on the sucker rod.
The utlity model has following beneficial effect: owing to take such scheme, setting upright between main body and the well bar has supporting positive cover, sets upright main body and rubs with supporting positive cover in rotation process, does not rub with the well bar, the phenomenon of having avoided the well bar to be rubbed has prolonged application life of well bar.All-in-one-piece simple in structure, solid and reliable, split type is convenient to on-the-spot installation and changes applying flexible.
Description of drawings:
Fig. 1 is the half sectional view of the utility model embodiment 1;
Fig. 2 is the structural representation of the utility model embodiment 2;
Fig. 3 is A-A sectional view of Fig. 2;
Fig. 4 is B-B sectional view of Fig. 2.
1-centralizer body among the figure, 2-guard bar device, 3-fin, 4-boss, 5-left side grafting piece, the right grafting piece of 6-, 7-left side inserted block, the right inserted block of 8-.
The specific embodiment:
The utility model is described in further detail below in conjunction with accompanying drawing:
Shown in figure, this screw pump rolling anti-channeling formula centralizer comprises centralizer body 1 and guard bar device 2, guard bar device 2 is fixed on the sucker rod, guard bar device 2 two ends have boss 4, centralizer body 1 is enclosed between two boss 4 of guard bar device 2, gapped between centralizer body 1 and the guard bar device 2, centralizer body 1 can rotate, and is evenly equipped with the fin parallel with axis 3 on centralizer body 1 wall.
Embodiment 1, as shown in Figure 1, centralizer body 1 and guard bar device 2 are respectively overall structure, adopt phase embedding Shooting Technique guard bar device 2 directly to be cast from the assigned address of well bar, become one with sucker rod, the two ends of guard bar device 2 have boss 4 respectively, the rotation liner that will match then is between two boss 4 that are stuck in guard bar device 2, make between rotation liner and the guard bar device 2 and leave the gap, at last injection moulding has the centralizer body 1 of fin 3 on the rotation liner, rotation liner and centralizer body 1 can form an integral body after finishing, owing to leave running clearance between rotation liner and the guard bar device 2, can guarantee that centralizer body 1 rotates freely on guard bar device 2, centralizer body 1 and guard bar device 2 all adopt the moulding of high-strength abrasion-proof nylon injection-molding, have only during work and rotate friction between guard bar device 2 and the centralizer body 1, so avoided centralizer to cause wearing and tearing for the well bar, thereby played the location, set upright and the triple role of guard bar.Monolithic construction is solid and reliable.
Embodiment 2, as Fig. 2, Fig. 3 and shown in Figure 4, centralizer body 1 and guard bar device 2 are respectively the branch body structure, are made up of two parts, centralizer body 1 is pegged graft by left side grafting piece 5 and left grafting piece 6 and is formed.It is left inserted block 7 and right inserted block 8 that guard bar device 2 is made up of two semicylinders that have a formula tight locking button that plugs each other, the mutual-inserting type tight locking button is positioned at the two ends of guard bar device 2, left side inserted block 7 and 8 pairs of mortise locks of right inserted block are tight, it can be installed on the well bar optional position easily and hold tightly with the well bar, centralizer body 1 outside guard bar device 2, mortise lock tightly is enclosed within on the guard bar device 2 and between gapped, it is boss 4 that there is projection snap close position, guard bar device 2 two ends, centralizer body 1 is limited in it, owing to leave the free gap between centralizer body 1 and the location guard bar device 2, can guarantee that centralizer body rotates freely on the guard bar device.Centralizer body 1 and guard bar device 2 all adopt the moulding of high-strength abrasion-proof nylon injection-molding, have only between guard bar device 2 and the centralizer body 1 friction of rotation during work, thus avoided centralizer to cause wearing and tearing for the well bar, thus play the location, set upright and the triple role of guard bar.Split type on-the-spot installation and replacing, the applying flexible be convenient to.
Two kinds of forms all be applicable to diameter below 38 various rod-pumped well bars and the location of screw bolt well bar set upright, two kinds of forms also can be used for the short connection type centralizer, short circuit and well casing are played a protective role equally,
Claims (2)
1, a kind of screw pump rolling anti-channeling formula centralizer, comprise centralizer body (1), be evenly equipped with the fin parallel with axis (3) on centralizer body (1) wall, it is characterized in that: centralizer body (1) casts between guard bar device (2) two boss (4), and guard bar device (2) casts on the sucker rod.
2, screw pump rolling anti-channeling formula centralizer according to claim 1, it is characterized in that: centralizer body (1) is made up of left side grafting piece (5) and right grafting piece (6), left side grafting piece (5) and right grafting piece (6) are plugged between guard bar device (2) two boss (4) mutually, and centralizer body (1) is rotatable, guard bar device (2) is made up of left inserted block (7) and right inserted block (8), and left inserted block (7) and right inserted block (8) are pegged graft mutually at two ends and be fixed on the sucker rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201110899U CN201206440Y (en) | 2008-04-25 | 2008-04-25 | Rolling anti-jumping centralizer for screw pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201110899U CN201206440Y (en) | 2008-04-25 | 2008-04-25 | Rolling anti-jumping centralizer for screw pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201206440Y true CN201206440Y (en) | 2009-03-11 |
Family
ID=40465507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201110899U Expired - Fee Related CN201206440Y (en) | 2008-04-25 | 2008-04-25 | Rolling anti-jumping centralizer for screw pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201206440Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107143314A (en) * | 2016-03-01 | 2017-09-08 | 中国石油化工股份有限公司 | A kind of high angle hole sleeve pipe is prefilled with sand screen and anti-sand method |
| CN108222855A (en) * | 2016-12-12 | 2018-06-29 | 四川煜天石油机械设备有限公司 | A kind of reducing sucker rod rotary centralizer |
| CN109931012A (en) * | 2019-04-17 | 2019-06-25 | 盐城华亚石油机械制造有限公司 | Quick-release quick change oil pumping rod centering device |
-
2008
- 2008-04-25 CN CNU2008201110899U patent/CN201206440Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107143314A (en) * | 2016-03-01 | 2017-09-08 | 中国石油化工股份有限公司 | A kind of high angle hole sleeve pipe is prefilled with sand screen and anti-sand method |
| CN108222855A (en) * | 2016-12-12 | 2018-06-29 | 四川煜天石油机械设备有限公司 | A kind of reducing sucker rod rotary centralizer |
| CN109931012A (en) * | 2019-04-17 | 2019-06-25 | 盐城华亚石油机械制造有限公司 | Quick-release quick change oil pumping rod centering 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: 20090311 Termination date: 20120425 |