CN204024519U - High-strength anti-skid takes off oil pumping rod centering device - Google Patents
High-strength anti-skid takes off oil pumping rod centering device Download PDFInfo
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- CN204024519U CN204024519U CN201420421606.8U CN201420421606U CN204024519U CN 204024519 U CN204024519 U CN 204024519U CN 201420421606 U CN201420421606 U CN 201420421606U CN 204024519 U CN204024519 U CN 204024519U
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- centralizer
- utility
- centering device
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- oil pumping
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Abstract
The utility model relates to a kind of high-strength anti-skid and takes off oil pumping rod centering device, belongs to petroleum machinery equipment oil recovery field, oil field.Be smooth cylinder in the middle part of the utility model centralizer, two ends are cone cylindricality.The utility model is owing to making cone cylindricality by the two ends of centralizer, increase axial automatic guide, reduce its resistance at work and frictional force, improve its reliability, and heart position is enclosed with one piece of face shaping is wherein the resin of irregular body, improve tensile strength and the axial locking power of centralizer, improve product application life.
Description
technical field:
The utility model relates to a kind of high-strength anti-skid and takes off oil pumping rod centering device, belongs to petroleum machinery equipment oil recovery field, oil field.
background technology:
At present, the centralizer sucker rod that oil field adopts, be centralizer is directly injected on position that sucker rod determines, be increase centralizer and sucker rod axial locking power, generally adopt before injection moulding centralizer, needing the center of injection moulding centralizer, nylon rope or iron wire etc. are wrapped on sucker rod, to increase the coupling mechanism force of centralizer, thus reach at work, centralizer is relative fixing with sucker rod axial location, and institute's injection moulding centralizer adopts right cylinder type.Adopt this scheme, due to the defect that process materials produces in heating process, cause the position between centralizer and sucker rod to change, product works after a period of time in oil well, and centralizer produces and loosens, easy generation slippage, centralizer position is changed, can not ensure that sucker rod is in oil pipe center all the time and effectively works, easily occur eccentric wear phenomenon, have a strong impact on well recovery, shorten product application life.
technical scheme:
The purpose of this utility model is to provide a kind of high-strength anti-skid to take off oil pumping rod centering device, reduces resistance and frictional force in this device busy, enhances tensile strength and axial locking power, improves product application life.
Technical solution
The two ends of the utility model centralizer are cone cylindricality.
Further: centralizer center position wrapped resin.
Further: centralizer center outer surface is provided with spiral slot.
Further: knuckle R=10-20mm between smooth cylinder and cone cylindricality.
The utility model is owing to making cone cylindricality by the two ends of centralizer, increase axial automatic guide, reduce its resistance at work and frictional force, improve its reliability, and heart position is enclosed with one piece of face shaping is wherein the resin of irregular body, improve tensile strength and the axial locking power of centralizer, improve product application life.
The utility model centralizer center outer surface has additional spiral slot, is that the resistance of smooth cylindrical and frictional force are less than center outer surface.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Fig. 2 is the A-A sectional drawing of Fig. 1;
Fig. 3 is the utility model another embodiment structural representation;
Fig. 4 is the B-B sectional drawing of Fig. 3;
Fig. 5 is the utility model scheme of installation;
Fig. 6 is the C-C sectional drawing of Fig. 5.
Detailed description of the invention
Embodiment 1
The middle part of the utility model centralizer 1 is smooth cylinder, and two ends are cone cylindricality, knuckle R=15mm between smooth cylinder and cone cylindricality.
Be enclosed with resin material 2 at described centralizer 1 center position, resin material 2 is coated on sucker rod 3, is then injection-moulded on the sucker rod 3 of coated with resins material 2 by centralizer 1.
Embodiment 2
The middle part of the utility model centralizer 1 has spiral slot for adopting on external surface, two ends are cone cylindricality, be enclosed with resin material 2 at described centralizer 1 center position, resin material 2 is coated on sucker rod 3, is then injection-moulded on the sucker rod 3 of coated with resins material 2 by centralizer 1.
The utility model is by using with original scheme comparison and testing, and the change that axial tension occurs, the axial locking power of rated service loads improves greatly.
Respectively get 20 to carry out comparative test result and see the following form:
conclusion:
by axial service load pull-off test, adopt the centralizer sucker rod that novel technological method is produced, the anti-pulling-out force (KN) of the centralizer sucker rod produced than original process, effectively improves more than five times, thus improve the product life-span in use, reduce cost for oil production.
Claims (4)
1. high-strength anti-skid takes off oil pumping rod centering device, it is characterized in that, the middle part of described centralizer is smooth cylinder, and two ends are cone cylindricality.
2. high-strength anti-skid according to claim 1 takes off oil pumping rod centering device, it is characterized in that, centralizer center position wrapped resin.
3. high-strength anti-skid according to claim 1 takes off oil pumping rod centering device, it is characterized in that, centralizer center outer surface is provided with spiral slot.
4. high-strength anti-skid according to claim 1 takes off oil pumping rod centering device, it is characterized in that, knuckle R=10-20mm between smooth cylinder and cone cylindricality.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420421606.8U CN204024519U (en) | 2014-07-29 | 2014-07-29 | High-strength anti-skid takes off oil pumping rod centering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420421606.8U CN204024519U (en) | 2014-07-29 | 2014-07-29 | High-strength anti-skid takes off oil pumping rod centering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204024519U true CN204024519U (en) | 2014-12-17 |
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ID=52064403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420421606.8U Active CN204024519U (en) | 2014-07-29 | 2014-07-29 | High-strength anti-skid takes off oil pumping rod centering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204024519U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194055A (en) * | 2015-04-30 | 2016-12-07 | 中国石油天然气股份有限公司 | Centralizer |
-
2014
- 2014-07-29 CN CN201420421606.8U patent/CN204024519U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194055A (en) * | 2015-04-30 | 2016-12-07 | 中国石油天然气股份有限公司 | Centralizer |
| CN106194055B (en) * | 2015-04-30 | 2019-08-02 | 中国石油天然气股份有限公司 | Centralizer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |