CN201517377U - Centralizer of rod part of sucker rod - Google Patents
Centralizer of rod part of sucker rod Download PDFInfo
- Publication number
- CN201517377U CN201517377U CN2009202796655U CN200920279665U CN201517377U CN 201517377 U CN201517377 U CN 201517377U CN 2009202796655 U CN2009202796655 U CN 2009202796655U CN 200920279665 U CN200920279665 U CN 200920279665U CN 201517377 U CN201517377 U CN 201517377U
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- CN
- China
- Prior art keywords
- sucker rod
- centralizer
- rod bar
- rod
- bar according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model provides a centralizer of a rod part of a sucker rod, one or more of which are reliably and conveniently mounted on the same one sucker rod to effectively prevent the direct-contact wear of the rod part and the coupler of the sucker rod and the oil tube. The centralizer is provided with a centralizing body which is formed by engaging two centralizing blocks through a wire spring, and the cross section of the centralizing body after assembly is approximately elliptic. Threads formed in an opened spring sleeve are in elastic interference fit with the sucker rod, so that the opened spring sleeve is tightly fixed on the sucker rod. A ring-shaped groove is formed in the centralizing body and arc-shaped chamfers are formed at two outer ends of the centralizing body, wherein the ring-shaped groove of the centralizing body is clamped on the opened spring sleeve in a way of rotating freely but not reciprocating axially. The centralizing body is made of alloy material and has high hardness, wear resistance, high smoothness, low contact friction resistance relative to the oil tube, capability of reducing wear of the oil tube and has long service life. The centralizer of the rod part of the sucker rod solves the problems in the prior art and makes full use of advantages when applied to the oil well with continuous sucker rod and continuous oil tube.
Description
Affiliated technical field
The utility model relates to a kind of corollary apparatus on the petroleum beam-pumping unit well sucker rod.
Background technology
When oil pumper was worked, sucker rod pumped in oil pipe.For various reasons, oil pipe often is not vertical.In the knee, when sucker rod moved up and down, the box cupling of sucker rod and bar portion can rub with tube inner wall, and the time has been grown, and damage can be arranged mutually.For head it off, people have designed tens kinds of oil pumping rod centering devices, and at present modal have a nonmetal making, face contact centralizer and the drifting type oil pumping rod centering device made as nylon centralizer, metal.The nylon centralizer is the cylinder of making of nylon, and diameter is slightly less than pipe aperture, there is groove on the surface, is installed in the sucker rod end, and the bar portion that is installed in is also arranged.But this centralizer weares and teares faster by it in the higher well section of temperature because material cause is worn easily.Application life is short, needs in time to change, and strengthens cost for oil production.The face contact centralizer and the drifting type oil pumping rod centering device that adopt metal to make are also arranged, solved above-mentioned a part of problem, but these centralizers can only be installed on the end screw thread of sucker rod, can not solve the problem of bar portion and tube inner wall contact wear.
The utility model content
To be that design is a kind of can install one or morely on same sucker rod the purpose of this utility model easily and reliably, can prevent effectively that sucker rod bar portion and box cupling and oil pipe from directly contacting the sucker rod portion centralizer that take place to wear and tear.
The technical solution of the utility model is: this centralizer constitutes as a whole by wiper block (3), (4) and split ring cover (1) and two wire springs (2) assembling.
The utility model special character is: the centralizer body of this centralizer meshes together the centralizer body that constitutes the cross section approximate ellipsoidal by two lobe wiper blocks by wire spring.Be provided with the tooth line in the split ring cover and sucker rod is the elasticity interference fit, can be fixed on the sucker rod tightly.There is the camber chamfering at the outer two ends of centralizer body, are provided with the cannelure and the steel wire engaging groove that hold the split ring cover in the centralizer body, have the centralizer body of cannelure to be sleeved on split ring and put and can freely rotate, can not axial motion.Centralizer body adopts alloy material to make, high rigidity, wear-resisting, best bright finish,, wearing and tearing, the long service life that can effectively reduce oil pipe little with oil pipe contact friction resistance.
This centralizer can solve the indeterminable problem of traditional centralizer, uses in the oil well of coiled rod and coiled tubing and more can bring into play its advantage.
In sum: the beneficial effects of the utility model are, according to the oil well concrete condition one or more sucker rod bar portion centralizer can be installed easily on same sucker rod, preventing effectively that sucker rod bar portion from contacting with tube inner wall with rod collar weares and teares.
Description of drawings
Below in conjunction with accompanying drawing and implementation column the utility model is further specified
Fig. 1 is the utility model front view.
Fig. 2 is the utility model left view.
Fig. 3 is the utility model vertical view.
Fig. 4 is the partial enlarged drawing of the utility model Fig. 3.
Fig. 5 is the utility model B-B sectional view.
The specific embodiment
Split ring cover (1) is contained in rod connector sentences outer sucker rod bar portion optional position, with in the wiper block that two wire springs are housed (4) and another wiper block (3) cannelure and steel wire engaging groove being arranged, the split ring cover (1) that just has been installed in reliably on the sucker rod when two lobe centralizer bodies snap together has been gone up.Two wire springs (2) that fasten in the installation process wiper block all are compressed in wiper block (4) draw-in groove, and at this moment two lobes are set upright block and are easy to fasten and put in place, fasten finish after two wire springs swell again and enter in the draw-in groove of another wiper block (3).Split ring cover (1), two wire springs (2), wiper block (3), (4) constitute a reliable centralizer integral body at this moment.It is also very easy to dismantle it, the bump that inserts two wire springs from the groove crack of centralizer body (3) both sides, end with two steel wires pushes back in the groove of centralizer body (4), centralizer body (3), (4) can separate, and the available dedicated instrument can be easy to it is taken off when needing to remove the split ring cover that is stuck on the sucker rod.
Opening jump ring cover (1) selects for use the steel of excellent spring to be processed into, and wiper block (3), (4) are with high hardness alloy material or to surperficial cure process, two wire springs (2) are processed into corrosion-resistant spring steel wire.
Claims (7)
- An energy on same sucker rod, install easily and reliably one or more, can prevent effectively that sucker rod bar portion and box cupling and oil pipe from directly contacting the sucker rod bar portion centralizer that wearing and tearing take place, it is characterized in that this centralizer assembles as a whole formation by wiper block (3), (4) and split ring cover (1) and two wire springs (2).
- 2. sucker rod bar according to claim 1 portion centralizer, the centralizer body that it is characterized in that centralizer meshes together the centralizer body that constitutes the approximate ellipsoidal cross section by two lobe wiper blocks (3), (4) by wire spring (2) and is sleeved on split ring and puts, can free rotation can not axial motion.
- 3. sucker rod bar according to claim 1 portion centralizer is characterized in that being provided with in wiper block (3), (4) cannelure and the wire spring engaging groove that contains the split ring cover, and there is the camber chamfering at the outer two ends of centralizer body.
- 4. sucker rod bar according to claim 1 portion centralizer is characterized in that being provided with the tooth line in the split ring cover (1) and sucker rod is the elasticity interference fit, can be fixed on the sucker rod tightly.
- 5. sucker rod bar according to claim 1 portion centralizer is characterized in that wiper block (3), (4) are with high hardness alloy material or to surperficial cure process.
- 6. sucker rod bar according to claim 1 portion centralizer is characterized in that opening jump ring cover (1) selects for use the steel of excellent spring to be processed into.
- 7. sucker rod bar according to claim 1 portion centralizer is characterized in that two wire springs (2) are processed into corrosion-resistant spring steel wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202796655U CN201517377U (en) | 2009-11-07 | 2009-11-07 | Centralizer of rod part of sucker rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202796655U CN201517377U (en) | 2009-11-07 | 2009-11-07 | Centralizer of rod part of sucker rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201517377U true CN201517377U (en) | 2010-06-30 |
Family
ID=42498099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202796655U Expired - Fee Related CN201517377U (en) | 2009-11-07 | 2009-11-07 | Centralizer of rod part of sucker rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201517377U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104533312A (en) * | 2014-12-22 | 2015-04-22 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Coiled tubing hydraulic centering guide |
| CN105604484A (en) * | 2015-12-31 | 2016-05-25 | 燕山大学 | Drag-reducing and torque-reducing device |
| CN109138863A (en) * | 2018-09-30 | 2019-01-04 | 大庆丹枫石油技术开发有限公司 | A kind of oil pumping rod centering device being easily installed |
-
2009
- 2009-11-07 CN CN2009202796655U patent/CN201517377U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104533312A (en) * | 2014-12-22 | 2015-04-22 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Coiled tubing hydraulic centering guide |
| CN104533312B (en) * | 2014-12-22 | 2017-02-22 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Coiled tubing hydraulic centering guide |
| CN105604484A (en) * | 2015-12-31 | 2016-05-25 | 燕山大学 | Drag-reducing and torque-reducing device |
| CN109138863A (en) * | 2018-09-30 | 2019-01-04 | 大庆丹枫石油技术开发有限公司 | A kind of oil pumping rod centering device being easily installed |
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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: 20100630 Termination date: 20101107 |